Repository: vurtun/nuklear Branch: master Commit: 6b9f937475db Files: 134 Total size: 3.1 MB Directory structure: gitextract_hks9o4hv/ ├── .gitattributes ├── .gitignore ├── .gitmodules ├── .travis.yml ├── Readme.md ├── demo/ │ ├── allegro5/ │ │ ├── KeyboardHandleriOS.h │ │ ├── KeyboardHandleriOS.m │ │ ├── Makefile │ │ ├── Readme.md │ │ ├── main.c │ │ └── nuklear_allegro5.h │ ├── calculator.c │ ├── d3d11/ │ │ ├── build.bat │ │ ├── main.c │ │ ├── nuklear_d3d11.h │ │ ├── nuklear_d3d11.hlsl │ │ ├── nuklear_d3d11_pixel_shader.h │ │ └── nuklear_d3d11_vertex_shader.h │ ├── d3d9/ │ │ ├── build.bat │ │ ├── main.c │ │ └── nuklear_d3d9.h │ ├── gdi/ │ │ ├── build.bat │ │ ├── main.c │ │ └── nuklear_gdi.h │ ├── gdip/ │ │ ├── build.bat │ │ ├── main.c │ │ └── nuklear_gdip.h │ ├── glfw_opengl2/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_glfw_gl2.h │ ├── glfw_opengl3/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_glfw_gl3.h │ ├── glfw_opengl4/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_glfw_gl4.h │ ├── node_editor.c │ ├── overview.c │ ├── sdl_opengl2/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_sdl_gl2.h │ ├── sdl_opengl3/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_sdl_gl3.h │ ├── sdl_opengles2/ │ │ ├── Makefile │ │ ├── Readme.md │ │ ├── main.c │ │ └── nuklear_sdl_gles2.h │ ├── sfml_opengl2/ │ │ ├── Makefile │ │ ├── Readme.md │ │ ├── main.cpp │ │ └── nuklear_sfml_gl2.h │ ├── sfml_opengl3/ │ │ ├── Makefile │ │ ├── Readme.md │ │ ├── main.cpp │ │ └── nuklear_sfml_gl3.h │ ├── style.c │ ├── x11/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_xlib.h │ ├── x11_opengl2/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_xlib_gl2.h │ ├── x11_opengl3/ │ │ ├── Makefile │ │ ├── main.c │ │ └── nuklear_xlib_gl3.h │ ├── x11_rawfb/ │ │ ├── Makefile │ │ ├── main.c │ │ ├── nuklear_rawfb.h │ │ └── nuklear_xlib.h │ └── x11_xft/ │ ├── Makefile │ ├── main.c │ └── nuklear_xlib.h ├── doc/ │ ├── Makefile │ ├── build.sh │ ├── nuklear.html │ └── stddoc.c ├── example/ │ ├── Makefile │ ├── canvas.c │ ├── extended.c │ ├── file_browser.c │ ├── skinning.c │ └── stb_image.h ├── nuklear.h ├── package.json └── src/ ├── CHANGELOG ├── CREDITS ├── HEADER ├── LICENSE ├── Readme.md ├── build.py ├── nuklear.h ├── nuklear_buffer.c ├── nuklear_button.c ├── nuklear_chart.c ├── nuklear_color.c ├── nuklear_color_picker.c ├── nuklear_combo.c ├── nuklear_context.c ├── nuklear_contextual.c ├── nuklear_draw.c ├── nuklear_edit.c ├── nuklear_font.c ├── nuklear_group.c ├── nuklear_image.c ├── nuklear_input.c ├── nuklear_internal.h ├── nuklear_layout.c ├── nuklear_list_view.c ├── nuklear_math.c ├── nuklear_menu.c ├── nuklear_page_element.c ├── nuklear_panel.c ├── nuklear_pool.c ├── nuklear_popup.c ├── nuklear_progress.c ├── nuklear_property.c ├── nuklear_scrollbar.c ├── nuklear_selectable.c ├── nuklear_slider.c ├── nuklear_string.c ├── nuklear_style.c ├── nuklear_table.c ├── nuklear_text.c ├── nuklear_text_editor.c ├── nuklear_toggle.c ├── nuklear_tooltip.c ├── nuklear_tree.c ├── nuklear_utf8.c ├── nuklear_util.c ├── nuklear_vertex.c ├── nuklear_widget.c ├── nuklear_window.c └── paq.sh ================================================ FILE CONTENTS ================================================ ================================================ FILE: .gitattributes ================================================ # Github language settings *.h linguist-language=c *.c linguist-language=c ================================================ FILE: .gitignore ================================================ demo/*/*.exe demo/*/*.obj demo/*/bin/* example/bin/* docs/xml docs/build docs/src *.tmp ================================================ FILE: .gitmodules ================================================ ================================================ FILE: .travis.yml ================================================ language: c sudo: required dist: xenial os: - linux compiler: - gcc - clang before_install: - if [ $TRAVIS_OS_NAME == linux ]; then sudo apt-get update -qq; sudo apt-get install -y --no-install-recommends libglfw3 libglfw3-dev libglew-dev; fi script: - make -C demo/glfw_opengl2 - make -C demo/glfw_opengl3 - make -C example ================================================ FILE: Readme.md ================================================ # Nuklear ## ALL DEVELOPMENT MOVED ELSEWHERE Dear visitor, this repository, issue tracker, etc. is abandoned in favor of https://github.com/Immediate-Mode-UI/Nuklear . Any activity in this issue tracker, any pull requests, etc. will be ignored. Looking forward to hearing from you in https://github.com/Immediate-Mode-UI/Nuklear *Nuklear community* [![Build Status](https://travis-ci.org/vurtun/nuklear.svg)](https://travis-ci.org/vurtun/nuklear) This is a minimal state immediate mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default render backend or OS window and input handling but instead provides a very modular library approach by using simple input state for input and draw commands describing primitive shapes as output. So instead of providing a layered library that tries to abstract over a number of platform and render backends it only focuses on the actual UI. ## Features - Immediate mode graphical user interface toolkit - Single header library - Written in C89 (ANSI C) - Small codebase (~18kLOC) - Focus on portability, efficiency and simplicity - No dependencies (not even the standard library if not wanted) - Fully skinnable and customizable - Low memory footprint with total memory control if needed or wanted - UTF-8 support - No global or hidden state - Customizable library modules (you can compile and use only what you need) - Optional font baker and vertex buffer output - [Documentation](https://cdn.statically.io/gh/vurtun/nuklear/master/doc/nuklear.html) ## Building This library is self contained in one single header file and can be used either in header only mode or in implementation mode. The header only mode is used by default when included and allows including this header in other headers and does not contain the actual implementation. The implementation mode requires to define the preprocessor macro `NK_IMPLEMENTATION` in *one* .c/.cpp file before `#include`ing this file, e.g.: ```c #define NK_IMPLEMENTATION #include "nuklear.h" ``` IMPORTANT: Every time you include "nuklear.h" you have to define the same optional flags. This is very important not doing it either leads to compiler errors or even worse stack corruptions. ## Gallery ![screenshot](https://cloud.githubusercontent.com/assets/8057201/11761525/ae06f0ca-a0c6-11e5-819d-5610b25f6ef4.gif) ![screen](https://cloud.githubusercontent.com/assets/8057201/13538240/acd96876-e249-11e5-9547-5ac0b19667a0.png) ![screen2](https://cloud.githubusercontent.com/assets/8057201/13538243/b04acd4c-e249-11e5-8fd2-ad7744a5b446.png) ![node](https://cloud.githubusercontent.com/assets/8057201/9976995/e81ac04a-5ef7-11e5-872b-acd54fbeee03.gif) ![skinning](https://cloud.githubusercontent.com/assets/8057201/15991632/76494854-30b8-11e6-9555-a69840d0d50b.png) ![gamepad](https://cloud.githubusercontent.com/assets/8057201/14902576/339926a8-0d9c-11e6-9fee-a8b73af04473.png) ## Example ```c /* init gui state */ struct nk_context ctx; nk_init_fixed(&ctx, calloc(1, MAX_MEMORY), MAX_MEMORY, &font); enum {EASY, HARD}; static int op = EASY; static float value = 0.6f; static int i = 20; if (nk_begin(&ctx, "Show", nk_rect(50, 50, 220, 220), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) { /* fixed widget pixel width */ nk_layout_row_static(&ctx, 30, 80, 1); if (nk_button_label(&ctx, "button")) { /* event handling */ } /* fixed widget window ratio width */ nk_layout_row_dynamic(&ctx, 30, 2); if (nk_option_label(&ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(&ctx, "hard", op == HARD)) op = HARD; /* custom widget pixel width */ nk_layout_row_begin(&ctx, NK_STATIC, 30, 2); { nk_layout_row_push(&ctx, 50); nk_label(&ctx, "Volume:", NK_TEXT_LEFT); nk_layout_row_push(&ctx, 110); nk_slider_float(&ctx, 0, &value, 1.0f, 0.1f); } nk_layout_row_end(&ctx); } nk_end(&ctx); ``` ![example](https://cloud.githubusercontent.com/assets/8057201/10187981/584ecd68-675c-11e5-897c-822ef534a876.png) ## Bindings There are a number of nuklear bindings for different languges created by other authors. I cannot atest for their quality since I am not necessarily proficient in either of these languages. Furthermore there are no guarantee that all bindings will always be kept up to date: - [Java](https://github.com/glegris/nuklear4j) by Guillaume Legris - [D](https://github.com/Timu5/bindbc-nuklear) by Mateusz Muszyński - [Golang](https://github.com/golang-ui/nuklear) by golang-ui@github.com - [Rust](https://github.com/snuk182/nuklear-rust) by snuk182@github.com - [Chicken](https://github.com/wasamasa/nuklear) by wasamasa@github.com - [Nim](https://github.com/zacharycarter/nuklear-nim) by zacharycarter@github.com - Lua - [LÖVE-Nuklear](https://github.com/keharriso/love-nuklear) by Kevin Harrison - [MoonNuklear](https://github.com/stetre/moonnuklear) by Stefano Trettel - Python - [pyNuklear](https://github.com/billsix/pyNuklear) by William Emerison Six (ctypes-based wrapper) - [pynk](https://github.com/nathanrw/nuklear-cffi) by nathanrw@github.com (cffi binding) - [CSharp/.NET](https://github.com/cartman300/NuklearDotNet) by cartman300@github.com ## Credits Developed by Micha Mettke and every direct or indirect contributor to the GitHub. Embeds `stb_texedit`, `stb_truetype` and `stb_rectpack` by Sean Barrett (public domain) Embeds `ProggyClean.ttf` font by Tristan Grimmer (MIT license). Big thank you to Omar Cornut (ocornut@github) for his [imgui](https://github.com/ocornut/imgui) library and giving me the inspiration for this library, Casey Muratori for handmade hero and his original immediate mode graphical user interface idea and Sean Barrett for his amazing single header [libraries](https://github.com/nothings/stb) which restored my faith in libraries and brought me to create some of my own. Finally Apoorva Joshi for his singe-header [file packer](http://apoorvaj.io/single-header-packer.html). ## License ``` ------------------------------------------------------------------------------ This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------ ALTERNATIVE A - MIT License Copyright (c) 2017 Micha Mettke Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------ ALTERNATIVE B - Public Domain (www.unlicense.org) This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ----------------------------------------------------------------------------- ``` ================================================ FILE: demo/allegro5/KeyboardHandleriOS.h ================================================ #import #include @interface KeyboardHandleriOS : UIView -(void)setCustomKeyboardEventSource:(ALLEGRO_EVENT_SOURCE*)ev_src; -(void)show; -(void)hide; @end ================================================ FILE: demo/allegro5/KeyboardHandleriOS.m ================================================ #ifdef __OBJC__ #import #endif #import "KeyboardHandleriOS.h" #include #include @interface KeyboardHandleriOS() { ALLEGRO_EVENT_SOURCE *event_source; ALLEGRO_DISPLAY *current_display; } @end @implementation KeyboardHandleriOS - (id)init { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil]; self = [self initWithFrame:CGRectMake(-100, -100, 0, 0)]; event_source = NULL; current_display = al_get_current_display(); UIView* v = al_iphone_get_view(current_display); [v addSubview:self]; return self; } - (void)setCustomKeyboardEventSource:(ALLEGRO_EVENT_SOURCE *)ev_src { event_source = ev_src; } - (UIKeyboardType) keyboardType { return UIKeyboardTypeASCIICapable; } - (UITextAutocorrectionType) autocorrectionType { return UITextAutocorrectionTypeNo; } -(BOOL)canBecomeFirstResponder { return YES; } - (void)deleteBackward { if (!event_source) { NSLog(@"deleteBackward(): No event source found, not sending events"); return; } ALLEGRO_EVENT *event_down = (ALLEGRO_EVENT*)calloc(1, sizeof(ALLEGRO_EVENT)); ALLEGRO_EVENT *event_up = (ALLEGRO_EVENT*)calloc(1, sizeof(ALLEGRO_EVENT)); event_down->type = ALLEGRO_EVENT_KEY_DOWN; event_down->keyboard.display = current_display; event_down->keyboard.keycode = ALLEGRO_KEY_BACKSPACE; event_up->type = ALLEGRO_EVENT_KEY_UP; event_up->keyboard.display = current_display; event_up->keyboard.keycode = ALLEGRO_KEY_BACKSPACE; al_emit_user_event(event_source, event_down, NULL); al_emit_user_event(event_source, event_up, NULL); free(event_down); free(event_up); } - (BOOL)hasText { return YES; } - (void)insertText:(NSString *)text { if (!event_source) { NSLog(@"insertText(): No event source found, not sending events"); return; } ALLEGRO_EVENT *event_down = (ALLEGRO_EVENT*)calloc(1, sizeof(ALLEGRO_EVENT)); ALLEGRO_EVENT *event_up = (ALLEGRO_EVENT*)calloc(1, sizeof(ALLEGRO_EVENT)); if([text isEqualToString:@"\n"]) { event_down->type = ALLEGRO_EVENT_KEY_DOWN; event_down->keyboard.display = current_display; event_down->keyboard.keycode = ALLEGRO_KEY_ENTER; event_up->type = ALLEGRO_EVENT_KEY_UP; event_up->keyboard.display = current_display; event_up->keyboard.keycode = ALLEGRO_KEY_ENTER; al_emit_user_event(event_source, event_down, NULL); al_emit_user_event(event_source, event_up, NULL); [self hide]; //m_kb->setDonePressed(); } else { event_down->type = ALLEGRO_EVENT_KEY_CHAR; event_down->keyboard.display = current_display; event_down->keyboard.unichar = [text characterAtIndex:0]; // doesn't matter what keycode is, nuklear backend ignores it as long as it // isn't a special key event_down->keyboard.keycode = ALLEGRO_KEY_A; al_emit_user_event(event_source, event_down, NULL); } free(event_down); free(event_up); } -(void)show { NSLog(@"Should be showing!"); [self performSelectorOnMainThread:@selector(becomeFirstResponder) withObject:nil waitUntilDone:YES]; } -(void)hide { NSLog(@"Should be hiding!"); [self performSelectorOnMainThread:@selector(resignFirstResponder) withObject:nil waitUntilDone:YES]; } - (void)keyboardDidHide:(NSNotification *)notification { NSLog(@"keyboardDidHide called"); } -(void)dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidHideNotification object:nil]; } @end ================================================ FILE: demo/allegro5/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) # TODO: Handle Windows build #ifeq ($(OS),Windows_NT) #BIN := $(BIN).exe #LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32 #else LIBS = -lallegro -lallegro_main -lallegro_image -lallegro_font \ -lallegro_ttf -lallegro_primitives -lm #endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/allegro5/Readme.md ================================================ # Allegro v5 nuklear backend This backend provides support for [Allegro version 5](http://liballeg.org/). It works on on all supported platforms with an OpenGL backend, including iOS and Android. Touch support is provided by handling the first touch (ignoring any extra simultaneous touches) and emitting nuklear mouse events. nuklear will handle only the first touch like a single left-mouse click. Dragging the touch screen emits mouse-move events. ## Compiling You must link with image, font, ttf, and primitives Allegro addons. See the `Makefile`. ## Resolutions Like every nuklear backend, handling many different resolutions and resolution densities can be tricky. 14px font on a desktop may be perfect, but extremely small on a retina iPad. I recommend writing a middleware that will detect what kind of screen is being used, and modify the sizes of widgets accordingly. ## Soft Keyboard for Touch Screen Devices Information on how to implement soft keyboard callbacks for Android can be on the Allegro community wiki: https://wiki.allegro.cc/index.php?title=Running_Allegro_applications_on_Android#Displaying_the_Android_keyboard To display a soft keyboard on iOS, you must create a `UIView` subclass that implements the `UIKeyInput` interface. See `KeyboardHandleriOS.h` and `KeyboardHandleriOS.m` Objective-C source code files for an example on how to do this. As the Allegro keyboard driver does not currently listen for iOS events, we use a custom event emitter to emit keyboard events, which is passed in after initialization with `(void)setCustomKeyboardEventSource:(ALLEGRO_EVENT_SOURCE *)ev_src`. This causes normal keyboard events to be emitted and properly caught by the nuklear backend. The provided `main.c` demo file does not implement this, but with the provided source code files it is not difficult to do. See this Allegro community forum thread for more information: https://www.allegro.cc/forums/thread/616672 To know when nuklear wants to open and close the keyboard, you can check edit widget flags: ``` nk_flags ed_flags = nk_edit_string(ctx, NK_EDIT_FIELD, field_buffer, &field_len, 64, nk_filter_default); if (ed_flags & NK_EDIT_ACTIVATED) open_ios_soft_keyboard(); if (ed_flags & NK_EDIT_DEACTIVATED) close_ios_soft_keyboard(); ``` ### Manual Soft Keyboard Dismissal As the user can dismiss a keyboard manually, nuklear will not be aware when this occurs, and the text edit cursor will think the entry field is still active. I recommend catching the dismiss event, then emitting `ALLEGRO_EVENT_TOUCH_BEGIN` and `ALLEGRO_EVENT_TOUCH_END` events in an unused portion of the screen (like the bottom-right corner). This will simulate the user touching outside of the text entry widget, which will make the edit field inactive. ### The Keyboard Covers Widgets If you have a widget near the bottom of the screen, the keyboard opening woll cover it, and the user won't see what they are entering. One way to handle this is to make all text edit widgets view-only, and when tapped you dynamically create a new widget above the keyboard that receives all the key strokes. When the user dismisses the keyboard, copy the result from the new widget into the existing read-only text view and destroy the dynamic one. ================================================ FILE: demo/allegro5/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_ALLEGRO5_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_allegro5.h" #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the include * and the corresponding function. */ /*#include "../style.c"*/ /*#include "../calculator.c"*/ #include "../overview.c" /*#include "../node_editor.c"*/ /* =============================================================== * * DEMO * * ===============================================================*/ static void error_callback(int e, const char *d) {printf("Error %d: %s\n", e, d);} int main(void) { /* Platform */ ALLEGRO_DISPLAY *display = NULL; ALLEGRO_EVENT_QUEUE *event_queue = NULL; if (!al_init()) { fprintf(stdout, "failed to initialize allegro5!\n"); exit(1); } al_install_mouse(); al_set_mouse_wheel_precision(150); al_install_keyboard(); al_set_new_display_flags(ALLEGRO_WINDOWED|ALLEGRO_RESIZABLE|ALLEGRO_OPENGL); al_set_new_display_option(ALLEGRO_SAMPLE_BUFFERS, 1, ALLEGRO_SUGGEST); al_set_new_display_option(ALLEGRO_SAMPLES, 8, ALLEGRO_SUGGEST); display = al_create_display(WINDOW_WIDTH, WINDOW_HEIGHT); if (!display) { fprintf(stdout, "failed to create display!\n"); exit(1); } event_queue = al_create_event_queue(); if (!event_queue) { fprintf(stdout, "failed to create event_queue!\n"); al_destroy_display(display); exit(1); } al_register_event_source(event_queue, al_get_display_event_source(display)); al_register_event_source(event_queue, al_get_mouse_event_source()); al_register_event_source(event_queue, al_get_keyboard_event_source()); NkAllegro5Font *font; font = nk_allegro5_font_create_from_file("../../../extra_font/Roboto-Regular.ttf", 12, 0); struct nk_context *ctx; ctx = nk_allegro5_init(font, display, WINDOW_WIDTH, WINDOW_HEIGHT); /* style.c */ /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ while(1) { ALLEGRO_EVENT ev; ALLEGRO_TIMEOUT timeout; al_init_timeout(&timeout, 0.06); bool get_event = al_wait_for_event_until(event_queue, &ev, &timeout); if (get_event && ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) { break; } /* Very Important: Always do nk_input_begin / nk_input_end even if there are no events, otherwise internal nuklear state gets messed up */ nk_input_begin(ctx); if (get_event) { while (get_event) { nk_allegro5_handle_event(&ev); get_event = al_get_next_event(event_queue, &ev); } } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ /*calculator(ctx);*/ overview(ctx); /*node_editor(ctx);*/ /* ----------------------------------------- */ /* Draw */ al_clear_to_color(al_map_rgb(19, 43, 81)); /* IMPORTANT: `nk_allegro5_render` changes the target backbuffer to the display set at initialization and does not restore it. Change it if you want to draw somewhere else. */ nk_allegro5_render(); al_flip_display(); } nk_allegro5_font_del(font); nk_allegro5_shutdown(); al_destroy_display(display); al_destroy_event_queue(event_queue); return 0; } ================================================ FILE: demo/allegro5/nuklear_allegro5.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_ALLEGRO5_H_ #define NK_ALLEGRO5_H_ #include #include #include #include #include #include typedef struct NkAllegro5Font NkAllegro5Font; NK_API struct nk_context* nk_allegro5_init(NkAllegro5Font *font, ALLEGRO_DISPLAY *dsp, unsigned int width, unsigned int height); NK_API void nk_allegro5_handle_event(ALLEGRO_EVENT *ev); NK_API void nk_allegro5_shutdown(void); NK_API void nk_allegro5_render(void); /* Fonts. We wrap normal allegro fonts in some nuklear book keeping */ NK_API NkAllegro5Font* nk_allegro5_font_create_from_file(const char *file_name, int font_size, int flags); NK_API void nk_allegro5_font_del(NkAllegro5Font *font); NK_API void nk_allegro5_font_set_font(NkAllegro5Font *font); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_ALLEGRO5_IMPLEMENTATION #ifndef NK_ALLEGRO5_TEXT_MAX #define NK_ALLEGRO5_TEXT_MAX 256 #endif struct NkAllegro5Font { struct nk_user_font nk; int height; ALLEGRO_FONT *font; }; static struct nk_allegro5 { ALLEGRO_DISPLAY *dsp; unsigned int width; unsigned int height; int is_touch_down; int touch_down_id; struct nk_context ctx; struct nk_buffer cmds; } allegro5; /* Flags are identical to al_load_font() flags argument */ NK_API NkAllegro5Font* nk_allegro5_font_create_from_file(const char *file_name, int font_size, int flags) { if (!al_init_image_addon()) { fprintf(stdout, "Unable to initialize required allegro5 image addon\n"); exit(1); } if (!al_init_font_addon()) { fprintf(stdout, "Unable to initialize required allegro5 font addon\n"); exit(1); } if (!al_init_ttf_addon()) { fprintf(stdout, "Unable to initialize required allegro5 TTF font addon\n"); exit(1); } NkAllegro5Font *font = (NkAllegro5Font*)calloc(1, sizeof(NkAllegro5Font)); font->font = al_load_font(file_name, font_size, flags); if (font->font == NULL) { fprintf(stdout, "Unable to load font file: %s\n", file_name); return NULL; } font->height = al_get_font_line_height(font->font); return font; } static float nk_allegro5_font_get_text_width(nk_handle handle, float height, const char *text, int len) { NkAllegro5Font *font = (NkAllegro5Font*)handle.ptr; if (!font || !text) { return 0; } /* We must copy into a new buffer with exact length null-terminated as nuklear uses variable size buffers and al_get_text_width doesn't accept a length, it infers length from null-termination (which is unsafe API design by allegro devs!) */ char strcpy[len+1]; strncpy((char*)&strcpy, text, len); strcpy[len] = '\0'; return al_get_text_width(font->font, strcpy); } NK_API void nk_allegro5_font_set_font(NkAllegro5Font *allegro5font) { struct nk_user_font *font = &allegro5font->nk; font->userdata = nk_handle_ptr(allegro5font); font->height = (float)allegro5font->height; font->width = nk_allegro5_font_get_text_width; nk_style_set_font(&allegro5.ctx, font); } NK_API void nk_allegro5_font_del(NkAllegro5Font *font) { if(!font) return; al_destroy_font(font->font); free(font); } static ALLEGRO_COLOR nk_color_to_allegro_color(struct nk_color color) { return al_map_rgba((unsigned char)color.r, (unsigned char)color.g, (unsigned char)color.b, (unsigned char)color.a); } NK_API void nk_allegro5_render() { const struct nk_command *cmd; al_set_target_backbuffer(allegro5.dsp); nk_foreach(cmd, &allegro5.ctx) { ALLEGRO_COLOR color; switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; al_set_clipping_rectangle((int)s->x, (int)s->y, (int)s->w, (int)s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; color = nk_color_to_allegro_color(l->color); al_draw_line((float)l->begin.x, (float)l->begin.y, (float)l->end.x, (float)l->end.y, color, (float)l->line_thickness); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; color = nk_color_to_allegro_color(r->color); al_draw_rounded_rectangle((float)r->x, (float)r->y, (float)(r->x + r->w), (float)(r->y + r->h), (float)r->rounding, (float)r->rounding, color, (float)r->line_thickness); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; color = nk_color_to_allegro_color(r->color); al_draw_filled_rounded_rectangle((float)r->x, (float)r->y, (float)(r->x + r->w), (float)(r->y + r->h), (float)r->rounding, (float)r->rounding, color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; color = nk_color_to_allegro_color(c->color); float xr, yr; xr = (float)c->w/2; yr = (float)c->h/2; al_draw_ellipse(((float)(c->x)) + xr, ((float)c->y) + yr, xr, yr, color, (float)c->line_thickness); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; color = nk_color_to_allegro_color(c->color); float xr, yr; xr = (float)c->w/2; yr = (float)c->h/2; al_draw_filled_ellipse(((float)(c->x)) + xr, ((float)c->y) + yr, xr, yr, color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; color = nk_color_to_allegro_color(t->color); al_draw_triangle((float)t->a.x, (float)t->a.y, (float)t->b.x, (float)t->b.y, (float)t->c.x, (float)t->c.y, color, (float)t->line_thickness); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; color = nk_color_to_allegro_color(t->color); al_draw_filled_triangle((float)t->a.x, (float)t->a.y, (float)t->b.x, (float)t->b.y, (float)t->c.x, (float)t->c.y, color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p = (const struct nk_command_polygon*)cmd; color = nk_color_to_allegro_color(p->color); int i; float vertices[p->point_count * 2]; for (i = 0; i < p->point_count; i++) { vertices[i*2] = p->points[i].x; vertices[(i*2) + 1] = p->points[i].y; } al_draw_polyline((const float*)&vertices, (2 * sizeof(float)), (int)p->point_count, ALLEGRO_LINE_JOIN_ROUND, ALLEGRO_LINE_CAP_CLOSED, color, (float)p->line_thickness, 0.0); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; color = nk_color_to_allegro_color(p->color); int i; float vertices[p->point_count * 2]; for (i = 0; i < p->point_count; i++) { vertices[i*2] = p->points[i].x; vertices[(i*2) + 1] = p->points[i].y; } al_draw_filled_polygon((const float*)&vertices, (int)p->point_count, color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; color = nk_color_to_allegro_color(p->color); int i; float vertices[p->point_count * 2]; for (i = 0; i < p->point_count; i++) { vertices[i*2] = p->points[i].x; vertices[(i*2) + 1] = p->points[i].y; } al_draw_polyline((const float*)&vertices, (2 * sizeof(float)), (int)p->point_count, ALLEGRO_LINE_JOIN_ROUND, ALLEGRO_LINE_CAP_ROUND, color, (float)p->line_thickness, 0.0); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; color = nk_color_to_allegro_color(t->foreground); NkAllegro5Font *font = (NkAllegro5Font*)t->font->userdata.ptr; al_draw_text(font->font, color, (float)t->x, (float)t->y, 0, (const char*)t->string); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; color = nk_color_to_allegro_color(q->color); float points[8]; points[0] = (float)q->begin.x; points[1] = (float)q->begin.y; points[2] = (float)q->ctrl[0].x; points[3] = (float)q->ctrl[0].y; points[4] = (float)q->ctrl[1].x; points[5] = (float)q->ctrl[1].y; points[6] = (float)q->end.x; points[7] = (float)q->end.y; al_draw_spline(points, color, (float)q->line_thickness); } break; case NK_COMMAND_ARC: { const struct nk_command_arc *a = (const struct nk_command_arc *)cmd; color = nk_color_to_allegro_color(a->color); al_draw_arc((float)a->cx, (float)a->cy, (float)a->r, a->a[0], a->a[1], color, (float)a->line_thickness); } break; case NK_COMMAND_RECT_MULTI_COLOR: case NK_COMMAND_IMAGE: case NK_COMMAND_ARC_FILLED: default: break; } } nk_clear(&allegro5.ctx); } NK_API void nk_allegro5_handle_event(ALLEGRO_EVENT *ev) { struct nk_context *ctx = &allegro5.ctx; switch (ev->type) { case ALLEGRO_EVENT_DISPLAY_RESIZE: { allegro5.width = (unsigned int)ev->display.width; allegro5.height = (unsigned int)ev->display.height; al_acknowledge_resize(ev->display.source); } break; case ALLEGRO_EVENT_MOUSE_AXES: { nk_input_motion(ctx, ev->mouse.x, ev->mouse.y); if (ev->mouse.dz != 0) { nk_input_scroll(ctx, nk_vec2(0,(float)ev->mouse.dz / al_get_mouse_wheel_precision())); } } break; case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN: case ALLEGRO_EVENT_MOUSE_BUTTON_UP: { int button = NK_BUTTON_LEFT; if (ev->mouse.button == 2) { button = NK_BUTTON_RIGHT; } else if (ev->mouse.button == 3) { button = NK_BUTTON_MIDDLE; } nk_input_button(ctx, button, ev->mouse.x, ev->mouse.y, ev->type == ALLEGRO_EVENT_MOUSE_BUTTON_DOWN); } break; /* This essentially converts touch events to mouse events */ case ALLEGRO_EVENT_TOUCH_BEGIN: case ALLEGRO_EVENT_TOUCH_END: { /* We only acknowledge one touch at a time. Otherwise, each touch would be manipulating multiple nuklear elements, as if there were multiple mouse cursors */ if (allegro5.is_touch_down && allegro5.touch_down_id != ev->touch.id) { return; } if (ev->type == ALLEGRO_EVENT_TOUCH_BEGIN) { allegro5.is_touch_down = 1; allegro5.touch_down_id = ev->touch.id; /* FIXME: This is a hack to properly simulate touches as a mouse with nuklear. If you instantly jump from one place to another without an nk_input_end(), it confuses the nuklear state. nuklear expects smooth mouse movements, which is unlike a touch screen */ nk_input_motion(ctx, (int)ev->touch.x, (int)ev->touch.y); nk_input_end(ctx); nk_input_begin(ctx); } else { allegro5.is_touch_down = 0; allegro5.touch_down_id = -1; } nk_input_button(ctx, NK_BUTTON_LEFT, (int)ev->touch.x, (int)ev->touch.y, ev->type == ALLEGRO_EVENT_TOUCH_BEGIN); } break; case ALLEGRO_EVENT_TOUCH_MOVE: { /* Only acknowledge movements of a single touch, we are simulating a mouse cursor */ if (!allegro5.is_touch_down || allegro5.touch_down_id != ev->touch.id) { return; } nk_input_motion(ctx, (int)ev->touch.x, (int)ev->touch.y); } break; case ALLEGRO_EVENT_KEY_DOWN: case ALLEGRO_EVENT_KEY_UP: { int kc = ev->keyboard.keycode; int down = ev->type == ALLEGRO_EVENT_KEY_DOWN; if (kc == ALLEGRO_KEY_LSHIFT || kc == ALLEGRO_KEY_RSHIFT) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (kc == ALLEGRO_KEY_DELETE) nk_input_key(ctx, NK_KEY_DEL, down); else if (kc == ALLEGRO_KEY_ENTER) nk_input_key(ctx, NK_KEY_ENTER, down); else if (kc == ALLEGRO_KEY_TAB) nk_input_key(ctx, NK_KEY_TAB, down); else if (kc == ALLEGRO_KEY_LEFT) nk_input_key(ctx, NK_KEY_LEFT, down); else if (kc == ALLEGRO_KEY_RIGHT) nk_input_key(ctx, NK_KEY_RIGHT, down); else if (kc == ALLEGRO_KEY_UP) nk_input_key(ctx, NK_KEY_UP, down); else if (kc == ALLEGRO_KEY_DOWN) nk_input_key(ctx, NK_KEY_DOWN, down); else if (kc == ALLEGRO_KEY_BACKSPACE) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (kc == ALLEGRO_KEY_ESCAPE) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down); else if (kc == ALLEGRO_KEY_PGUP) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (kc == ALLEGRO_KEY_PGDN) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (kc == ALLEGRO_KEY_HOME) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (kc == ALLEGRO_KEY_END) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } } break; case ALLEGRO_EVENT_KEY_CHAR: { int kc = ev->keyboard.keycode; int control_mask = (ev->keyboard.modifiers & ALLEGRO_KEYMOD_CTRL) || (ev->keyboard.modifiers & ALLEGRO_KEYMOD_COMMAND); if (kc == ALLEGRO_KEY_C && control_mask) { nk_input_key(ctx, NK_KEY_COPY, 1); } else if (kc == ALLEGRO_KEY_V && control_mask) { nk_input_key(ctx, NK_KEY_PASTE, 1); } else if (kc == ALLEGRO_KEY_X && control_mask) { nk_input_key(ctx, NK_KEY_CUT, 1); } else if (kc == ALLEGRO_KEY_Z && control_mask) { nk_input_key(ctx, NK_KEY_TEXT_UNDO, 1); } else if (kc == ALLEGRO_KEY_R && control_mask) { nk_input_key(ctx, NK_KEY_TEXT_REDO, 1); } else if (kc == ALLEGRO_KEY_A && control_mask) { nk_input_key(ctx, NK_KEY_TEXT_SELECT_ALL, 1); } else { if (kc != ALLEGRO_KEY_BACKSPACE && kc != ALLEGRO_KEY_LEFT && kc != ALLEGRO_KEY_RIGHT && kc != ALLEGRO_KEY_UP && kc != ALLEGRO_KEY_DOWN && kc != ALLEGRO_KEY_HOME && kc != ALLEGRO_KEY_DELETE && kc != ALLEGRO_KEY_ENTER && kc != ALLEGRO_KEY_END && kc != ALLEGRO_KEY_ESCAPE && kc != ALLEGRO_KEY_PGDN && kc != ALLEGRO_KEY_PGUP) { nk_input_unicode(ctx, ev->keyboard.unichar); } } } break; default: break; } } NK_INTERN void nk_allegro5_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { char *text = al_get_clipboard_text(allegro5.dsp); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; al_free(text); } NK_INTERN void nk_allegro5_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; al_set_clipboard_text(allegro5.dsp, str); free(str); } NK_API struct nk_context* nk_allegro5_init(NkAllegro5Font *allegro5font, ALLEGRO_DISPLAY *dsp, unsigned int width, unsigned int height) { if (!al_init_primitives_addon()) { fprintf(stdout, "Unable to initialize required allegro5 primitives addon\n"); exit(1); } struct nk_user_font *font = &allegro5font->nk; font->userdata = nk_handle_ptr(allegro5font); font->height = (float)allegro5font->height; font->width = nk_allegro5_font_get_text_width; allegro5.dsp = dsp; allegro5.width = width; allegro5.height = height; allegro5.is_touch_down = 0; allegro5.touch_down_id = -1; nk_init_default(&allegro5.ctx, font); allegro5.ctx.clip.copy = nk_allegro5_clipboard_copy; allegro5.ctx.clip.paste = nk_allegro5_clipboard_paste; allegro5.ctx.clip.userdata = nk_handle_ptr(0); return &allegro5.ctx; } NK_API void nk_allegro5_shutdown(void) { nk_free(&allegro5.ctx); memset(&allegro5, 0, sizeof(allegro5)); } #endif /* NK_ALLEGRO5_IMPLEMENTATION */ ================================================ FILE: demo/calculator.c ================================================ /* nuklear - v1.00 - public domain */ static void calculator(struct nk_context *ctx) { if (nk_begin(ctx, "Calculator", nk_rect(10, 10, 180, 250), NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_MOVABLE)) { static int set = 0, prev = 0, op = 0; static const char numbers[] = "789456123"; static const char ops[] = "+-*/"; static double a = 0, b = 0; static double *current = &a; size_t i = 0; int solve = 0; {int len; char buffer[256]; nk_layout_row_dynamic(ctx, 35, 1); len = snprintf(buffer, 256, "%.2f", *current); nk_edit_string(ctx, NK_EDIT_SIMPLE, buffer, &len, 255, nk_filter_float); buffer[len] = 0; *current = atof(buffer);} nk_layout_row_dynamic(ctx, 35, 4); for (i = 0; i < 16; ++i) { if (i >= 12 && i < 15) { if (i > 12) continue; if (nk_button_label(ctx, "C")) { a = b = op = 0; current = &a; set = 0; } if (nk_button_label(ctx, "0")) { *current = *current*10.0f; set = 0; } if (nk_button_label(ctx, "=")) { solve = 1; prev = op; op = 0; } } else if (((i+1) % 4)) { if (nk_button_text(ctx, &numbers[(i/4)*3+i%4], 1)) { *current = *current * 10.0f + numbers[(i/4)*3+i%4] - '0'; set = 0; } } else if (nk_button_text(ctx, &ops[i/4], 1)) { if (!set) { if (current != &b) { current = &b; } else { prev = op; solve = 1; } } op = ops[i/4]; set = 1; } } if (solve) { if (prev == '+') a = a + b; if (prev == '-') a = a - b; if (prev == '*') a = a * b; if (prev == '/') a = a / b; current = &a; if (set) current = &b; b = 0; set = 0; } } nk_end(ctx); } ================================================ FILE: demo/d3d11/build.bat ================================================ @echo off rem This will use VS2015 for compiler call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 fxc.exe /nologo /T vs_4_0_level_9_0 /E vs /O3 /Zpc /Ges /Fh nuklear_d3d11_vertex_shader.h /Vn nk_d3d11_vertex_shader /Qstrip_reflect /Qstrip_debug /Qstrip_priv nuklear_d3d11.hlsl fxc.exe /nologo /T ps_4_0_level_9_0 /E ps /O3 /Zpc /Ges /Fh nuklear_d3d11_pixel_shader.h /Vn nk_d3d11_pixel_shader /Qstrip_reflect /Qstrip_debug /Qstrip_priv nuklear_d3d11.hlsl cl /D_CRT_SECURE_NO_DEPRECATE /nologo /W3 /O2 /fp:fast /Gm- /Fedemo.exe main.c user32.lib dxguid.lib d3d11.lib /link /incremental:no ================================================ FILE: demo/d3d11/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #define COBJMACROS #define WIN32_LEAN_AND_MEAN #include #include #include #include #include #include #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_INDEX_BUFFER 128 * 1024 #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_D3D11_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_d3d11.h" /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static IDXGISwapChain *swap_chain; static ID3D11Device *device; static ID3D11DeviceContext *context; static ID3D11RenderTargetView* rt_view; static void set_swap_chain_size(int width, int height) { ID3D11Texture2D *back_buffer; D3D11_RENDER_TARGET_VIEW_DESC desc; HRESULT hr; if (rt_view) ID3D11RenderTargetView_Release(rt_view); ID3D11DeviceContext_OMSetRenderTargets(context, 0, NULL, NULL); hr = IDXGISwapChain_ResizeBuffers(swap_chain, 0, width, height, DXGI_FORMAT_UNKNOWN, 0); if (hr == DXGI_ERROR_DEVICE_REMOVED || hr == DXGI_ERROR_DEVICE_RESET || hr == DXGI_ERROR_DRIVER_INTERNAL_ERROR) { /* to recover from this, you'll need to recreate device and all the resources */ MessageBoxW(NULL, L"DXGI device is removed or reset!", L"Error", 0); exit(0); } assert(SUCCEEDED(hr)); memset(&desc, 0, sizeof(desc)); desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D; hr = IDXGISwapChain_GetBuffer(swap_chain, 0, &IID_ID3D11Texture2D, (void **)&back_buffer); assert(SUCCEEDED(hr)); hr = ID3D11Device_CreateRenderTargetView(device, (ID3D11Resource *)back_buffer, &desc, &rt_view); assert(SUCCEEDED(hr)); ID3D11Texture2D_Release(back_buffer); } static LRESULT CALLBACK WindowProc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_DESTROY: PostQuitMessage(0); return 0; case WM_SIZE: if (swap_chain) { int width = LOWORD(lparam); int height = HIWORD(lparam); set_swap_chain_size(width, height); nk_d3d11_resize(context, width, height); } break; } if (nk_d3d11_handle_event(wnd, msg, wparam, lparam)) return 0; return DefWindowProcW(wnd, msg, wparam, lparam); } int main(void) { struct nk_context *ctx; struct nk_colorf bg; WNDCLASSW wc; RECT rect = { 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT }; DWORD style = WS_OVERLAPPEDWINDOW; DWORD exstyle = WS_EX_APPWINDOW; HWND wnd; int running = 1; HRESULT hr; D3D_FEATURE_LEVEL feature_level; DXGI_SWAP_CHAIN_DESC swap_chain_desc; /* Win32 */ memset(&wc, 0, sizeof(wc)); wc.style = CS_DBLCLKS; wc.lpfnWndProc = WindowProc; wc.hInstance = GetModuleHandleW(0); wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.lpszClassName = L"NuklearWindowClass"; RegisterClassW(&wc); AdjustWindowRectEx(&rect, style, FALSE, exstyle); wnd = CreateWindowExW(exstyle, wc.lpszClassName, L"Nuklear Demo", style | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, wc.hInstance, NULL); /* D3D11 setup */ memset(&swap_chain_desc, 0, sizeof(swap_chain_desc)); swap_chain_desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; swap_chain_desc.BufferDesc.RefreshRate.Numerator = 60; swap_chain_desc.BufferDesc.RefreshRate.Denominator = 1; swap_chain_desc.SampleDesc.Count = 1; swap_chain_desc.SampleDesc.Quality = 0; swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; swap_chain_desc.BufferCount = 1; swap_chain_desc.OutputWindow = wnd; swap_chain_desc.Windowed = TRUE; swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD; swap_chain_desc.Flags = 0; if (FAILED(D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, 0, NULL, 0, D3D11_SDK_VERSION, &swap_chain_desc, &swap_chain, &device, &feature_level, &context))) { /* if hardware device fails, then try WARP high-performance software rasterizer, this is useful for RDP sessions */ hr = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_WARP, NULL, 0, NULL, 0, D3D11_SDK_VERSION, &swap_chain_desc, &swap_chain, &device, &feature_level, &context); assert(SUCCEEDED(hr)); } set_swap_chain_size(WINDOW_WIDTH, WINDOW_HEIGHT); /* GUI */ ctx = nk_d3d11_init(device, WINDOW_WIDTH, WINDOW_HEIGHT, MAX_VERTEX_BUFFER, MAX_INDEX_BUFFER); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_d3d11_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *robot = nk_font_atlas_add_from_file(atlas, "../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_d3d11_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle)*/;} /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ MSG msg; nk_input_begin(ctx); while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) running = 0; TranslateMessage(&msg); DispatchMessageW(&msg); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ ID3D11DeviceContext_ClearRenderTargetView(context, rt_view, &bg.r); ID3D11DeviceContext_OMSetRenderTargets(context, 1, &rt_view, NULL); nk_d3d11_render(context, NK_ANTI_ALIASING_ON); hr = IDXGISwapChain_Present(swap_chain, 1, 0); if (hr == DXGI_ERROR_DEVICE_RESET || hr == DXGI_ERROR_DEVICE_REMOVED) { /* to recover from this, you'll need to recreate device and all the resources */ MessageBoxW(NULL, L"D3D11 device is lost or removed!", L"Error", 0); break; } else if (hr == DXGI_STATUS_OCCLUDED) { /* window is not visible, so vsync won't work. Let's sleep a bit to reduce CPU usage */ Sleep(10); } assert(SUCCEEDED(hr)); } ID3D11DeviceContext_ClearState(context); nk_d3d11_shutdown(); ID3D11RenderTargetView_Release(rt_view); ID3D11DeviceContext_Release(context); ID3D11Device_Release(device); IDXGISwapChain_Release(swap_chain); UnregisterClassW(wc.lpszClassName, wc.hInstance); return 0; } ================================================ FILE: demo/d3d11/nuklear_d3d11.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_D3D11_H_ #define NK_D3D11_H_ #define WIN32_LEAN_AND_MEAN #include typedef struct ID3D11Device ID3D11Device; typedef struct ID3D11DeviceContext ID3D11DeviceContext; NK_API struct nk_context *nk_d3d11_init(ID3D11Device *device, int width, int height, unsigned int max_vertex_buffer, unsigned int max_index_buffer); NK_API void nk_d3d11_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_d3d11_font_stash_end(void); NK_API int nk_d3d11_handle_event(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam); NK_API void nk_d3d11_render(ID3D11DeviceContext *context, enum nk_anti_aliasing); NK_API void nk_d3d11_resize(ID3D11DeviceContext *context, int width, int height); NK_API void nk_d3d11_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_D3D11_IMPLEMENTATION #define WIN32_LEAN_AND_MEAN #define COBJMACROS #include #include #include #include #include #include "nuklear_d3d11_vertex_shader.h" #include "nuklear_d3d11_pixel_shader.h" struct nk_d3d11_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct { struct nk_context ctx; struct nk_font_atlas atlas; struct nk_buffer cmds; struct nk_draw_null_texture null; unsigned int max_vertex_buffer; unsigned int max_index_buffer; D3D11_VIEWPORT viewport; ID3D11Device *device; ID3D11RasterizerState *rasterizer_state; ID3D11VertexShader *vertex_shader; ID3D11InputLayout *input_layout; ID3D11Buffer *const_buffer; ID3D11PixelShader *pixel_shader; ID3D11BlendState *blend_state; ID3D11Buffer *index_buffer; ID3D11Buffer *vertex_buffer; ID3D11ShaderResourceView *font_texture_view; ID3D11SamplerState *sampler_state; } d3d11; NK_API void nk_d3d11_render(ID3D11DeviceContext *context, enum nk_anti_aliasing AA) { const float blend_factor[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; const UINT stride = sizeof(struct nk_d3d11_vertex); const UINT offset = 0; ID3D11DeviceContext_IASetInputLayout(context, d3d11.input_layout); ID3D11DeviceContext_IASetVertexBuffers(context, 0, 1, &d3d11.vertex_buffer, &stride, &offset); ID3D11DeviceContext_IASetIndexBuffer(context, d3d11.index_buffer, DXGI_FORMAT_R16_UINT, 0); ID3D11DeviceContext_IASetPrimitiveTopology(context, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); ID3D11DeviceContext_VSSetShader(context, d3d11.vertex_shader, NULL, 0); ID3D11DeviceContext_VSSetConstantBuffers(context, 0, 1, &d3d11.const_buffer); ID3D11DeviceContext_PSSetShader(context, d3d11.pixel_shader, NULL, 0); ID3D11DeviceContext_PSSetSamplers(context, 0, 1, &d3d11.sampler_state); ID3D11DeviceContext_OMSetBlendState(context, d3d11.blend_state, blend_factor, 0xffffffff); ID3D11DeviceContext_RSSetState(context, d3d11.rasterizer_state); ID3D11DeviceContext_RSSetViewports(context, 1, &d3d11.viewport); /* Convert from command queue into draw list and draw to screen */ {/* load draw vertices & elements directly into vertex + element buffer */ D3D11_MAPPED_SUBRESOURCE vertices; D3D11_MAPPED_SUBRESOURCE indices; const struct nk_draw_command *cmd; UINT offset = 0; HRESULT hr; hr = ID3D11DeviceContext_Map(context, (ID3D11Resource *)d3d11.vertex_buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &vertices); NK_ASSERT(SUCCEEDED(hr)); hr = ID3D11DeviceContext_Map(context, (ID3D11Resource *)d3d11.index_buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &indices); NK_ASSERT(SUCCEEDED(hr)); {/* fill converting configuration */ struct nk_convert_config config; NK_STORAGE const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d11_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d11_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_d3d11_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; memset(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_d3d11_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_d3d11_vertex); config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.null = d3d11.null; {/* setup buffers to load vertices and elements */ struct nk_buffer vbuf, ibuf; nk_buffer_init_fixed(&vbuf, vertices.pData, (size_t)d3d11.max_vertex_buffer); nk_buffer_init_fixed(&ibuf, indices.pData, (size_t)d3d11.max_index_buffer); nk_convert(&d3d11.ctx, &d3d11.cmds, &vbuf, &ibuf, &config);} } ID3D11DeviceContext_Unmap(context, (ID3D11Resource *)d3d11.vertex_buffer, 0); ID3D11DeviceContext_Unmap(context, (ID3D11Resource *)d3d11.index_buffer, 0); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &d3d11.ctx, &d3d11.cmds) { D3D11_RECT scissor; ID3D11ShaderResourceView *texture_view = (ID3D11ShaderResourceView *)cmd->texture.ptr; if (!cmd->elem_count) continue; scissor.left = (LONG)cmd->clip_rect.x; scissor.right = (LONG)(cmd->clip_rect.x + cmd->clip_rect.w); scissor.top = (LONG)cmd->clip_rect.y; scissor.bottom = (LONG)(cmd->clip_rect.y + cmd->clip_rect.h); ID3D11DeviceContext_PSSetShaderResources(context, 0, 1, &texture_view); ID3D11DeviceContext_RSSetScissorRects(context, 1, &scissor); ID3D11DeviceContext_DrawIndexed(context, (UINT)cmd->elem_count, offset, 0); offset += cmd->elem_count; } nk_clear(&d3d11.ctx);} } static void nk_d3d11_get_projection_matrix(int width, int height, float *result) { const float L = 0.0f; const float R = (float)width; const float T = 0.0f; const float B = (float)height; float matrix[4][4] = { { 2.0f / (R - L), 0.0f, 0.0f, 0.0f }, { 0.0f, 2.0f / (T - B), 0.0f, 0.0f }, { 0.0f, 0.0f, 0.5f, 0.0f }, { (R + L) / (L - R), (T + B) / (B - T), 0.5f, 1.0f }, }; memcpy(result, matrix, sizeof(matrix)); } NK_API void nk_d3d11_resize(ID3D11DeviceContext *context, int width, int height) { D3D11_MAPPED_SUBRESOURCE mapped; if (SUCCEEDED(ID3D11DeviceContext_Map(context, (ID3D11Resource *)d3d11.const_buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped))) { nk_d3d11_get_projection_matrix(width, height, (float *)mapped.pData); ID3D11DeviceContext_Unmap(context, (ID3D11Resource *)d3d11.const_buffer, 0); d3d11.viewport.Width = (float)width; d3d11.viewport.Height = (float)height; } } NK_API int nk_d3d11_handle_event(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_KEYDOWN: case WM_KEYUP: case WM_SYSKEYDOWN: case WM_SYSKEYUP: { int down = !((lparam >> 31) & 1); int ctrl = GetKeyState(VK_CONTROL) & (1 << 15); switch (wparam) { case VK_SHIFT: case VK_LSHIFT: case VK_RSHIFT: nk_input_key(&d3d11.ctx, NK_KEY_SHIFT, down); return 1; case VK_DELETE: nk_input_key(&d3d11.ctx, NK_KEY_DEL, down); return 1; case VK_RETURN: nk_input_key(&d3d11.ctx, NK_KEY_ENTER, down); return 1; case VK_TAB: nk_input_key(&d3d11.ctx, NK_KEY_TAB, down); return 1; case VK_LEFT: if (ctrl) nk_input_key(&d3d11.ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(&d3d11.ctx, NK_KEY_LEFT, down); return 1; case VK_RIGHT: if (ctrl) nk_input_key(&d3d11.ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(&d3d11.ctx, NK_KEY_RIGHT, down); return 1; case VK_BACK: nk_input_key(&d3d11.ctx, NK_KEY_BACKSPACE, down); return 1; case VK_HOME: nk_input_key(&d3d11.ctx, NK_KEY_TEXT_START, down); nk_input_key(&d3d11.ctx, NK_KEY_SCROLL_START, down); return 1; case VK_END: nk_input_key(&d3d11.ctx, NK_KEY_TEXT_END, down); nk_input_key(&d3d11.ctx, NK_KEY_SCROLL_END, down); return 1; case VK_NEXT: nk_input_key(&d3d11.ctx, NK_KEY_SCROLL_DOWN, down); return 1; case VK_PRIOR: nk_input_key(&d3d11.ctx, NK_KEY_SCROLL_UP, down); return 1; case 'C': if (ctrl) { nk_input_key(&d3d11.ctx, NK_KEY_COPY, down); return 1; } break; case 'V': if (ctrl) { nk_input_key(&d3d11.ctx, NK_KEY_PASTE, down); return 1; } break; case 'X': if (ctrl) { nk_input_key(&d3d11.ctx, NK_KEY_CUT, down); return 1; } break; case 'Z': if (ctrl) { nk_input_key(&d3d11.ctx, NK_KEY_TEXT_UNDO, down); return 1; } break; case 'R': if (ctrl) { nk_input_key(&d3d11.ctx, NK_KEY_TEXT_REDO, down); return 1; } break; } return 0; } case WM_CHAR: if (wparam >= 32) { nk_input_unicode(&d3d11.ctx, (nk_rune)wparam); return 1; } break; case WM_LBUTTONDOWN: nk_input_button(&d3d11.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_LBUTTONUP: nk_input_button(&d3d11.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); nk_input_button(&d3d11.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_RBUTTONDOWN: nk_input_button(&d3d11.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_RBUTTONUP: nk_input_button(&d3d11.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MBUTTONDOWN: nk_input_button(&d3d11.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_MBUTTONUP: nk_input_button(&d3d11.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MOUSEWHEEL: nk_input_scroll(&d3d11.ctx, nk_vec2(0,(float)(short)HIWORD(wparam) / WHEEL_DELTA)); return 1; case WM_MOUSEMOVE: nk_input_motion(&d3d11.ctx, (short)LOWORD(lparam), (short)HIWORD(lparam)); return 1; case WM_LBUTTONDBLCLK: nk_input_button(&d3d11.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); return 1; } return 0; } static void nk_d3d11_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { (void)usr; if (IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) { HGLOBAL mem = GetClipboardData(CF_UNICODETEXT); if (mem) { SIZE_T size = GlobalSize(mem) - 1; if (size) { LPCWSTR wstr = (LPCWSTR)GlobalLock(mem); if (wstr) { int utf8size = WideCharToMultiByte(CP_UTF8, 0, wstr, size / sizeof(wchar_t), NULL, 0, NULL, NULL); if (utf8size) { char* utf8 = (char*)malloc(utf8size); if (utf8) { WideCharToMultiByte(CP_UTF8, 0, wstr, size / sizeof(wchar_t), utf8, utf8size, NULL, NULL); nk_textedit_paste(edit, utf8, utf8size); free(utf8); } } GlobalUnlock(mem); } } } CloseClipboard(); } } static void nk_d3d11_clipboard_copy(nk_handle usr, const char *text, int len) { (void)usr; if (OpenClipboard(NULL)) { int wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); if (wsize) { HGLOBAL mem = GlobalAlloc(GMEM_MOVEABLE, (wsize + 1) * sizeof(wchar_t)); if (mem) { wchar_t* wstr = (wchar_t*)GlobalLock(mem); if (wstr) { MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); wstr[wsize] = 0; GlobalUnlock(mem); SetClipboardData(CF_UNICODETEXT, mem); } } } CloseClipboard(); } } NK_API struct nk_context* nk_d3d11_init(ID3D11Device *device, int width, int height, unsigned int max_vertex_buffer, unsigned int max_index_buffer) { HRESULT hr; d3d11.max_vertex_buffer = max_vertex_buffer; d3d11.max_index_buffer = max_index_buffer; d3d11.device = device; ID3D11Device_AddRef(device); nk_init_default(&d3d11.ctx, 0); d3d11.ctx.clip.copy = nk_d3d11_clipboard_copy; d3d11.ctx.clip.paste = nk_d3d11_clipboard_paste; d3d11.ctx.clip.userdata = nk_handle_ptr(0); nk_buffer_init_default(&d3d11.cmds); {/* rasterizer state */ D3D11_RASTERIZER_DESC desc; memset(&desc, 0, sizeof(desc)); desc.FillMode = D3D11_FILL_SOLID; desc.CullMode = D3D11_CULL_NONE; desc.FrontCounterClockwise = FALSE; desc.DepthBias = 0; desc.DepthBiasClamp = 0; desc.SlopeScaledDepthBias = 0.0f; desc.DepthClipEnable = TRUE; desc.ScissorEnable = TRUE; desc.MultisampleEnable = FALSE; desc.AntialiasedLineEnable = FALSE; hr = ID3D11Device_CreateRasterizerState(device,&desc, &d3d11.rasterizer_state); NK_ASSERT(SUCCEEDED(hr));} /* vertex shader */ {hr = ID3D11Device_CreateVertexShader(device,nk_d3d11_vertex_shader, sizeof(nk_d3d11_vertex_shader), NULL, &d3d11.vertex_shader); NK_ASSERT(SUCCEEDED(hr));} /* input layout */ {const D3D11_INPUT_ELEMENT_DESC layout[] = { { "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, offsetof(struct nk_d3d11_vertex, position), D3D11_INPUT_PER_VERTEX_DATA, 0 }, { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, offsetof(struct nk_d3d11_vertex, uv), D3D11_INPUT_PER_VERTEX_DATA, 0 }, { "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, offsetof(struct nk_d3d11_vertex, col), D3D11_INPUT_PER_VERTEX_DATA, 0 }, }; hr = ID3D11Device_CreateInputLayout(device,layout, ARRAYSIZE(layout), nk_d3d11_vertex_shader, sizeof(nk_d3d11_vertex_shader), &d3d11.input_layout); NK_ASSERT(SUCCEEDED(hr));} /* constant buffer */ {float matrix[4*4]; D3D11_BUFFER_DESC desc; memset(&desc, 0, sizeof(desc)); desc.ByteWidth = sizeof(matrix); desc.Usage = D3D11_USAGE_DYNAMIC; desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER; desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; desc.MiscFlags = 0; {D3D11_SUBRESOURCE_DATA data; data.pSysMem = matrix; data.SysMemPitch = 0; data.SysMemSlicePitch = 0; nk_d3d11_get_projection_matrix(width, height, matrix); hr = ID3D11Device_CreateBuffer(device, &desc, &data, &d3d11.const_buffer); NK_ASSERT(SUCCEEDED(hr));}} /* pixel shader */ {hr = ID3D11Device_CreatePixelShader(device, nk_d3d11_pixel_shader, sizeof(nk_d3d11_pixel_shader), NULL, &d3d11.pixel_shader); NK_ASSERT(SUCCEEDED(hr));} {/* blend state */ D3D11_BLEND_DESC desc; memset(&desc, 0, sizeof(desc)); desc.AlphaToCoverageEnable = FALSE; desc.RenderTarget[0].BlendEnable = TRUE; desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA; desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA; desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD; desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA; desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO; desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD; desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL; hr = ID3D11Device_CreateBlendState(device, &desc, &d3d11.blend_state); NK_ASSERT(SUCCEEDED(hr));} /* vertex buffer */ {D3D11_BUFFER_DESC desc; memset(&desc, 0, sizeof(desc)); desc.Usage = D3D11_USAGE_DYNAMIC; desc.ByteWidth = max_vertex_buffer; desc.BindFlags = D3D11_BIND_VERTEX_BUFFER; desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; desc.MiscFlags = 0; hr = ID3D11Device_CreateBuffer(device, &desc, NULL, &d3d11.vertex_buffer); NK_ASSERT(SUCCEEDED(hr));} /* index buffer */ {D3D11_BUFFER_DESC desc; memset(&desc, 0, sizeof(desc)); desc.Usage = D3D11_USAGE_DYNAMIC; desc.ByteWidth = max_index_buffer; desc.BindFlags = D3D11_BIND_INDEX_BUFFER; desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; hr = ID3D11Device_CreateBuffer(device, &desc, NULL, &d3d11.index_buffer); NK_ASSERT(SUCCEEDED(hr));} /* sampler state */ {D3D11_SAMPLER_DESC desc; memset(&desc, 0, sizeof(desc)); desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR; desc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP; desc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP; desc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP; desc.MipLODBias = 0.0f; desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS; desc.MinLOD = 0.0f; desc.MaxLOD = FLT_MAX; hr = ID3D11Device_CreateSamplerState(device, &desc, &d3d11.sampler_state); NK_ASSERT(SUCCEEDED(hr));} /* viewport */ {d3d11.viewport.TopLeftX = 0.0f; d3d11.viewport.TopLeftY = 0.0f; d3d11.viewport.Width = (float)width; d3d11.viewport.Height = (float)height; d3d11.viewport.MinDepth = 0.0f; d3d11.viewport.MaxDepth = 1.0f;} return &d3d11.ctx; } NK_API void nk_d3d11_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&d3d11.atlas); nk_font_atlas_begin(&d3d11.atlas); *atlas = &d3d11.atlas; } NK_API void nk_d3d11_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&d3d11.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); /* upload font to texture and create texture view */ {ID3D11Texture2D *font_texture; HRESULT hr; D3D11_TEXTURE2D_DESC desc; memset(&desc, 0, sizeof(desc)); desc.Width = (UINT)w; desc.Height = (UINT)h; desc.MipLevels = 1; desc.ArraySize = 1; desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; desc.SampleDesc.Count = 1; desc.SampleDesc.Quality = 0; desc.Usage = D3D11_USAGE_DEFAULT; desc.BindFlags = D3D11_BIND_SHADER_RESOURCE; desc.CPUAccessFlags = 0; {D3D11_SUBRESOURCE_DATA data; data.pSysMem = image; data.SysMemPitch = (UINT)(w * 4); data.SysMemSlicePitch = 0; hr = ID3D11Device_CreateTexture2D(d3d11.device, &desc, &data, &font_texture); assert(SUCCEEDED(hr));} {D3D11_SHADER_RESOURCE_VIEW_DESC srv; memset(&srv, 0, sizeof(srv)); srv.Format = desc.Format; srv.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D; srv.Texture2D.MipLevels = 1; srv.Texture2D.MostDetailedMip = 0; hr = ID3D11Device_CreateShaderResourceView(d3d11.device, (ID3D11Resource *)font_texture, &srv, &d3d11.font_texture_view); assert(SUCCEEDED(hr));} ID3D11Texture2D_Release(font_texture);} nk_font_atlas_end(&d3d11.atlas, nk_handle_ptr(d3d11.font_texture_view), &d3d11.null); if (d3d11.atlas.default_font) nk_style_set_font(&d3d11.ctx, &d3d11.atlas.default_font->handle); } NK_API void nk_d3d11_shutdown(void) { nk_font_atlas_clear(&d3d11.atlas); nk_buffer_free(&d3d11.cmds); nk_free(&d3d11.ctx); ID3D11SamplerState_Release(d3d11.sampler_state); ID3D11ShaderResourceView_Release(d3d11.font_texture_view); ID3D11Buffer_Release(d3d11.vertex_buffer); ID3D11Buffer_Release(d3d11.index_buffer); ID3D11BlendState_Release(d3d11.blend_state); ID3D11PixelShader_Release(d3d11.pixel_shader); ID3D11Buffer_Release(d3d11.const_buffer); ID3D11VertexShader_Release(d3d11.vertex_shader); ID3D11InputLayout_Release(d3d11.input_layout); ID3D11RasterizerState_Release(d3d11.rasterizer_state); ID3D11Device_Release(d3d11.device); } #endif ================================================ FILE: demo/d3d11/nuklear_d3d11.hlsl ================================================ // cbuffer buffer0 : register(b0) { float4x4 ProjectionMatrix; }; sampler sampler0 : register(s0); Texture2D texture0 : register(t0); struct VS_INPUT { float2 pos : POSITION; float4 col : COLOR0; float2 uv : TEXCOORD0; }; struct PS_INPUT { float4 pos : SV_POSITION; float4 col : COLOR0; float2 uv : TEXCOORD0; }; PS_INPUT vs(VS_INPUT input) { PS_INPUT output; output.pos = mul(ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f)); output.col = input.col; output.uv = input.uv; return output; } float4 ps(PS_INPUT input) : SV_Target { return input.col * texture0.Sample(sampler0, input.uv); } ================================================ FILE: demo/d3d11/nuklear_d3d11_pixel_shader.h ================================================ #if 0 // // Generated by Microsoft (R) D3D Shader Disassembler // // // Input signature: // // Name Index Mask Register SysValue Format Used // -------------------- ----- ------ -------- -------- ------- ------ // SV_POSITION 0 xyzw 0 POS float // COLOR 0 xyzw 1 NONE float xyzw // TEXCOORD 0 xy 2 NONE float xy // // // Output signature: // // Name Index Mask Register SysValue Format Used // -------------------- ----- ------ -------- -------- ------- ------ // SV_Target 0 xyzw 0 TARGET float xyzw // // // Sampler/Resource to DX9 shader sampler mappings: // // Target Sampler Source Sampler Source Resource // -------------- --------------- ---------------- // s0 s0 t0 // // // Level9 shader bytecode: // ps_2_0 dcl t0 dcl t1.xy dcl_2d s0 texld r0, t1, s0 mul r0, r0, t0 mov oC0, r0 // approximately 3 instruction slots used (1 texture, 2 arithmetic) // // Sampler/Resource to DX9 shader sampler mappings: // // Target Sampler Source Sampler Source Resource // -------------- --------------- ---------------- // s0 s0 t0 // // // XNA shader bytecode: // ps_2_0 dcl t0 dcl t1.xy dcl_2d s0 texld r0, r2, s0 mul oC0, r0, r1 // approximately 2 instruction slots used (1 texture, 1 arithmetic) ps_4_0 dcl_sampler s0, mode_default dcl_resource_texture2d (float,float,float,float) t0 dcl_input_ps linear v1.xyzw dcl_input_ps linear v2.xy dcl_output o0.xyzw dcl_temps 1 sample r0.xyzw, v2.xyxx, t0.xyzw, s0 mul o0.xyzw, r0.xyzw, v1.xyzw ret // Approximately 0 instruction slots used #endif const BYTE nk_d3d11_pixel_shader[] = { 68, 88, 66, 67, 249, 46, 26, 75, 111, 182, 161, 241, 199, 179, 191, 89, 44, 229, 245, 103, 1, 0, 0, 0, 124, 2, 0, 0, 5, 0, 0, 0, 52, 0, 0, 0, 176, 0, 0, 0, 56, 1, 0, 0, 212, 1, 0, 0, 72, 2, 0, 0, 88, 78, 65, 83, 116, 0, 0, 0, 116, 0, 0, 0, 0, 2, 255, 255, 76, 0, 0, 0, 40, 0, 0, 0, 0, 0, 40, 0, 0, 0, 40, 0, 0, 0, 40, 0, 1, 0, 36, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 2, 255, 255, 31, 0, 0, 2, 0, 0, 0, 128, 0, 0, 15, 176, 31, 0, 0, 2, 0, 0, 0, 128, 1, 0, 3, 176, 31, 0, 0, 2, 0, 0, 0, 144, 0, 8, 15, 160, 66, 0, 0, 3, 0, 0, 15, 128, 2, 0, 228, 128, 0, 8, 228, 160, 5, 0, 0, 3, 0, 8, 15, 128, 0, 0, 228, 128, 1, 0, 228, 128, 255, 255, 0, 0, 65, 111, 110, 57, 128, 0, 0, 0, 128, 0, 0, 0, 0, 2, 255, 255, 88, 0, 0, 0, 40, 0, 0, 0, 0, 0, 40, 0, 0, 0, 40, 0, 0, 0, 40, 0, 1, 0, 36, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 2, 255, 255, 31, 0, 0, 2, 0, 0, 0, 128, 0, 0, 15, 176, 31, 0, 0, 2, 0, 0, 0, 128, 1, 0, 3, 176, 31, 0, 0, 2, 0, 0, 0, 144, 0, 8, 15, 160, 66, 0, 0, 3, 0, 0, 15, 128, 1, 0, 228, 176, 0, 8, 228, 160, 5, 0, 0, 3, 0, 0, 15, 128, 0, 0, 228, 128, 0, 0, 228, 176, 1, 0, 0, 2, 0, 8, 15, 128, 0, 0, 228, 128, 255, 255, 0, 0, 83, 72, 68, 82, 148, 0, 0, 0, 64, 0, 0, 0, 37, 0, 0, 0, 90, 0, 0, 3, 0, 96, 16, 0, 0, 0, 0, 0, 88, 24, 0, 4, 0, 112, 16, 0, 0, 0, 0, 0, 85, 85, 0, 0, 98, 16, 0, 3, 242, 16, 16, 0, 1, 0, 0, 0, 98, 16, 0, 3, 50, 16, 16, 0, 2, 0, 0, 0, 101, 0, 0, 3, 242, 32, 16, 0, 0, 0, 0, 0, 104, 0, 0, 2, 1, 0, 0, 0, 69, 0, 0, 9, 242, 0, 16, 0, 0, 0, 0, 0, 70, 16, 16, 0, 2, 0, 0, 0, 70, 126, 16, 0, 0, 0, 0, 0, 0, 96, 16, 0, 0, 0, 0, 0, 56, 0, 0, 7, 242, 32, 16, 0, 0, 0, 0, 0, 70, 14, 16, 0, 0, 0, 0, 0, 70, 30, 16, 0, 1, 0, 0, 0, 62, 0, 0, 1, 73, 83, 71, 78, 108, 0, 0, 0, 3, 0, 0, 0, 8, 0, 0, 0, 80, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 15, 15, 0, 0, 98, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 2, 0, 0, 0, 3, 3, 0, 0, 83, 86, 95, 80, 79, 83, 73, 84, 73, 79, 78, 0, 67, 79, 76, 79, 82, 0, 84, 69, 88, 67, 79, 79, 82, 68, 0, 171, 79, 83, 71, 78, 44, 0, 0, 0, 1, 0, 0, 0, 8, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 83, 86, 95, 84, 97, 114, 103, 101, 116, 0, 171, 171 }; ================================================ FILE: demo/d3d11/nuklear_d3d11_vertex_shader.h ================================================ #if 0 // // Generated by Microsoft (R) D3D Shader Disassembler // // // Input signature: // // Name Index Mask Register SysValue Format Used // -------------------- ----- ------ -------- -------- ------- ------ // POSITION 0 xy 0 NONE float xy // COLOR 0 xyzw 1 NONE float xyzw // TEXCOORD 0 xy 2 NONE float xy // // // Output signature: // // Name Index Mask Register SysValue Format Used // -------------------- ----- ------ -------- -------- ------- ------ // SV_POSITION 0 xyzw 0 POS float xyzw // COLOR 0 xyzw 1 NONE float xyzw // TEXCOORD 0 xy 2 NONE float xy // // // Constant buffer to DX9 shader constant mappings: // // Target Reg Buffer Start Reg # of Regs Data Conversion // ---------- ------- --------- --------- ---------------------- // c1 cb0 0 4 ( FLT, FLT, FLT, FLT) // // // Runtime generated constant mappings: // // Target Reg Constant Description // ---------- -------------------------------------------------- // c0 Vertex Shader position offset // // // Level9 shader bytecode: // vs_2_0 def c5, 0, 1, 0, 0 dcl_texcoord v0 dcl_texcoord1 v1 dcl_texcoord2 v2 mul r0, v0.x, c1 mad r0, c2, v0.y, r0 mov r1.xy, c5 mad r0, c3, r1.x, r0 mad r0, c4, r1.y, r0 mul r1.xy, r0.w, c0 add oPos.xy, r0, r1 mov oPos.zw, r0 mov oT0, v1 mov oT1.xy, v2 // approximately 10 instruction slots used // // Constant buffer to DX9 shader constant mappings: // // Target Reg Buffer Start Reg # of Regs Data Conversion // ---------- ------- --------- --------- ---------------------- // c0 cb0 0 4 ( FLT, FLT, FLT, FLT) // // // XNA Prepass shader bytecode: // vs_2_0 def c4, 0, 1, 0, 0 dcl_texcoord v0 mul r1, r0.x, c0 mad r0, c1, r0.y, r1 mov r1.xy, c4 mad r0, c2, r1.x, r0 mad r0, c3, r1.y, r0 mov oPos, r0 // approximately 6 instruction slots used // // Constant buffer to DX9 shader constant mappings: // // Target Reg Buffer Start Reg # of Regs Data Conversion // ---------- ------- --------- --------- ---------------------- // c0 cb0 0 4 ( FLT, FLT, FLT, FLT) // // // XNA shader bytecode: // vs_2_0 def c4, 0, 1, 0, 0 dcl_texcoord v0 dcl_texcoord1 v1 dcl_texcoord2 v2 mov oT0, r1 mov oT1.xy, r2 mul r1, r0.x, c0 mad r0, c1, r0.y, r1 mov r1.xy, c4 mad r0, c2, r1.x, r0 mad r0, c3, r1.y, r0 mov oPos, r0 // approximately 8 instruction slots used vs_4_0 dcl_constantbuffer cb0[4], immediateIndexed dcl_input v0.xy dcl_input v1.xyzw dcl_input v2.xy dcl_output_siv o0.xyzw, position dcl_output o1.xyzw dcl_output o2.xy dcl_temps 1 mul r0.xyzw, v0.xxxx, cb0[0].xyzw mad r0.xyzw, cb0[1].xyzw, v0.yyyy, r0.xyzw mad r0.xyzw, cb0[2].xyzw, l(0.000000, 0.000000, 0.000000, 0.000000), r0.xyzw mad o0.xyzw, cb0[3].xyzw, l(1.000000, 1.000000, 1.000000, 1.000000), r0.xyzw mov o1.xyzw, v1.xyzw mov o2.xy, v2.xyxx ret // Approximately 0 instruction slots used #endif const BYTE nk_d3d11_vertex_shader[] = { 68, 88, 66, 67, 215, 245, 86, 155, 188, 117, 37, 118, 193, 207, 209, 90, 160, 153, 246, 188, 1, 0, 0, 0, 72, 5, 0, 0, 6, 0, 0, 0, 56, 0, 0, 0, 48, 1, 0, 0, 248, 1, 0, 0, 20, 3, 0, 0, 100, 4, 0, 0, 212, 4, 0, 0, 88, 78, 65, 83, 240, 0, 0, 0, 240, 0, 0, 0, 0, 2, 254, 255, 192, 0, 0, 0, 48, 0, 0, 0, 1, 0, 36, 0, 0, 0, 48, 0, 0, 0, 48, 0, 0, 0, 36, 0, 0, 0, 48, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 2, 254, 255, 81, 0, 0, 5, 4, 0, 15, 160, 0, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 0, 0, 31, 0, 0, 2, 5, 0, 0, 128, 0, 0, 15, 144, 31, 0, 0, 2, 5, 0, 1, 128, 1, 0, 15, 144, 31, 0, 0, 2, 5, 0, 2, 128, 2, 0, 15, 144, 1, 0, 0, 2, 0, 0, 15, 224, 1, 0, 228, 128, 1, 0, 0, 2, 1, 0, 3, 224, 2, 0, 228, 128, 5, 0, 0, 3, 1, 0, 15, 128, 0, 0, 0, 128, 0, 0, 228, 160, 4, 0, 0, 4, 0, 0, 15, 128, 1, 0, 228, 160, 0, 0, 85, 128, 1, 0, 228, 128, 1, 0, 0, 2, 1, 0, 3, 128, 4, 0, 228, 160, 4, 0, 0, 4, 0, 0, 15, 128, 2, 0, 228, 160, 1, 0, 0, 128, 0, 0, 228, 128, 4, 0, 0, 4, 0, 0, 15, 128, 3, 0, 228, 160, 1, 0, 85, 128, 0, 0, 228, 128, 1, 0, 0, 2, 0, 0, 15, 192, 0, 0, 228, 128, 255, 255, 0, 0, 88, 78, 65, 80, 192, 0, 0, 0, 192, 0, 0, 0, 0, 2, 254, 255, 144, 0, 0, 0, 48, 0, 0, 0, 1, 0, 36, 0, 0, 0, 48, 0, 0, 0, 48, 0, 0, 0, 36, 0, 0, 0, 48, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 2, 254, 255, 81, 0, 0, 5, 4, 0, 15, 160, 0, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 0, 0, 31, 0, 0, 2, 5, 0, 0, 128, 0, 0, 15, 144, 5, 0, 0, 3, 1, 0, 15, 128, 0, 0, 0, 128, 0, 0, 228, 160, 4, 0, 0, 4, 0, 0, 15, 128, 1, 0, 228, 160, 0, 0, 85, 128, 1, 0, 228, 128, 1, 0, 0, 2, 1, 0, 3, 128, 4, 0, 228, 160, 4, 0, 0, 4, 0, 0, 15, 128, 2, 0, 228, 160, 1, 0, 0, 128, 0, 0, 228, 128, 4, 0, 0, 4, 0, 0, 15, 128, 3, 0, 228, 160, 1, 0, 85, 128, 0, 0, 228, 128, 1, 0, 0, 2, 0, 0, 15, 192, 0, 0, 228, 128, 255, 255, 0, 0, 65, 111, 110, 57, 20, 1, 0, 0, 20, 1, 0, 0, 0, 2, 254, 255, 224, 0, 0, 0, 52, 0, 0, 0, 1, 0, 36, 0, 0, 0, 48, 0, 0, 0, 48, 0, 0, 0, 36, 0, 1, 0, 48, 0, 0, 0, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 254, 255, 81, 0, 0, 5, 5, 0, 15, 160, 0, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 0, 0, 31, 0, 0, 2, 5, 0, 0, 128, 0, 0, 15, 144, 31, 0, 0, 2, 5, 0, 1, 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================================================ /* nuklear - 1.32.0 - public domain */ #define COBJMACROS #define WIN32_LEAN_AND_MEAN #include #include #include #include #include #include #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_D3D9_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_d3d9.h" /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static IDirect3DDevice9 *device; static IDirect3DDevice9Ex *deviceEx; static D3DPRESENT_PARAMETERS present; static LRESULT CALLBACK WindowProc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_DESTROY: PostQuitMessage(0); return 0; case WM_SIZE: if (device) { UINT width = LOWORD(lparam); UINT height = HIWORD(lparam); if (width != 0 && height != 0 && (width != present.BackBufferWidth || height != present.BackBufferHeight)) { nk_d3d9_release(); present.BackBufferWidth = width; present.BackBufferHeight = height; HRESULT hr = IDirect3DDevice9_Reset(device, &present); NK_ASSERT(SUCCEEDED(hr)); nk_d3d9_resize(width, height); } } break; } if (nk_d3d9_handle_event(wnd, msg, wparam, lparam)) return 0; return DefWindowProcW(wnd, msg, wparam, lparam); } static void create_d3d9_device(HWND wnd) { HRESULT hr; present.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT; present.BackBufferWidth = WINDOW_WIDTH; present.BackBufferHeight = WINDOW_HEIGHT; present.BackBufferFormat = D3DFMT_X8R8G8B8; present.BackBufferCount = 1; present.MultiSampleType = D3DMULTISAMPLE_NONE; present.SwapEffect = D3DSWAPEFFECT_DISCARD; present.hDeviceWindow = wnd; present.EnableAutoDepthStencil = TRUE; present.AutoDepthStencilFormat = D3DFMT_D24S8; present.Flags = D3DPRESENTFLAG_DISCARD_DEPTHSTENCIL; present.Windowed = TRUE; {/* first try to create Direct3D9Ex device if possible (on Windows 7+) */ typedef HRESULT WINAPI Direct3DCreate9ExPtr(UINT, IDirect3D9Ex**); Direct3DCreate9ExPtr *Direct3DCreate9Ex = (void *)GetProcAddress(GetModuleHandleA("d3d9.dll"), "Direct3DCreate9Ex"); if (Direct3DCreate9Ex) { IDirect3D9Ex *d3d9ex; if (SUCCEEDED(Direct3DCreate9Ex(D3D_SDK_VERSION, &d3d9ex))) { hr = IDirect3D9Ex_CreateDeviceEx(d3d9ex, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, wnd, D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE | D3DCREATE_FPU_PRESERVE, &present, NULL, &deviceEx); if (SUCCEEDED(hr)) { device = (IDirect3DDevice9 *)deviceEx; } else { /* hardware vertex processing not supported, no big deal retry with software vertex processing */ hr = IDirect3D9Ex_CreateDeviceEx(d3d9ex, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, wnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE | D3DCREATE_FPU_PRESERVE, &present, NULL, &deviceEx); if (SUCCEEDED(hr)) { device = (IDirect3DDevice9 *)deviceEx; } } IDirect3D9Ex_Release(d3d9ex); } } } if (!device) { /* otherwise do regular D3D9 setup */ IDirect3D9 *d3d9 = Direct3DCreate9(D3D_SDK_VERSION); hr = IDirect3D9_CreateDevice(d3d9, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, wnd, D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE | D3DCREATE_FPU_PRESERVE, &present, &device); if (FAILED(hr)) { /* hardware vertex processing not supported, no big deal retry with software vertex processing */ hr = IDirect3D9_CreateDevice(d3d9, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, wnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE | D3DCREATE_FPU_PRESERVE, &present, &device); NK_ASSERT(SUCCEEDED(hr)); } IDirect3D9_Release(d3d9); } } int main(void) { struct nk_context *ctx; struct nk_colorf bg; WNDCLASSW wc; RECT rect = { 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT }; DWORD style = WS_OVERLAPPEDWINDOW; DWORD exstyle = WS_EX_APPWINDOW; HWND wnd; int running = 1; /* Win32 */ memset(&wc, 0, sizeof(wc)); wc.style = CS_DBLCLKS; wc.lpfnWndProc = WindowProc; wc.hInstance = GetModuleHandleW(0); wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.lpszClassName = L"NuklearWindowClass"; RegisterClassW(&wc); AdjustWindowRectEx(&rect, style, FALSE, exstyle); wnd = CreateWindowExW(exstyle, wc.lpszClassName, L"Nuklear Demo", style | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, wc.hInstance, NULL); create_d3d9_device(wnd); /* GUI */ ctx = nk_d3d9_init(device, WINDOW_WIDTH, WINDOW_HEIGHT); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_d3d9_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *robot = nk_font_atlas_add_from_file(atlas, "../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_d3d9_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle)*/;} /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ MSG msg; nk_input_begin(ctx); while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) running = 0; TranslateMessage(&msg); DispatchMessageW(&msg); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ { HRESULT hr; hr = IDirect3DDevice9_Clear(device, 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, D3DCOLOR_COLORVALUE(bg.r, bg.g, bg.b, bg.a), 0.0f, 0); NK_ASSERT(SUCCEEDED(hr)); hr = IDirect3DDevice9_BeginScene(device); NK_ASSERT(SUCCEEDED(hr)); nk_d3d9_render(NK_ANTI_ALIASING_ON); hr = IDirect3DDevice9_EndScene(device); NK_ASSERT(SUCCEEDED(hr)); if (deviceEx) { hr = IDirect3DDevice9Ex_PresentEx(deviceEx, NULL, NULL, NULL, NULL, 0); } else { hr = IDirect3DDevice9_Present(device, NULL, NULL, NULL, NULL); } if (hr == D3DERR_DEVICELOST || hr == D3DERR_DEVICEHUNG || hr == D3DERR_DEVICEREMOVED) { /* to recover from this, you'll need to recreate device and all the resources */ MessageBoxW(NULL, L"D3D9 device is lost or removed!", L"Error", 0); break; } else if (hr == S_PRESENT_OCCLUDED) { /* window is not visible, so vsync won't work. Let's sleep a bit to reduce CPU usage */ Sleep(10); } NK_ASSERT(SUCCEEDED(hr)); } } nk_d3d9_shutdown(); if (deviceEx)IDirect3DDevice9Ex_Release(deviceEx); else IDirect3DDevice9_Release(device); UnregisterClassW(wc.lpszClassName, wc.hInstance); return 0; } ================================================ FILE: demo/d3d9/nuklear_d3d9.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_D3D9_H_ #define NK_D3D9_H_ #define WIN32_LEAN_AND_MEAN #include typedef struct IDirect3DDevice9 IDirect3DDevice9; NK_API struct nk_context *nk_d3d9_init(IDirect3DDevice9 *device, int width, int height); NK_API void nk_d3d9_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_d3d9_font_stash_end(void); NK_API int nk_d3d9_handle_event(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam); NK_API void nk_d3d9_render(enum nk_anti_aliasing); NK_API void nk_d3d9_release(void); NK_API void nk_d3d9_resize(int width, int height); NK_API void nk_d3d9_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_D3D9_IMPLEMENTATION #define WIN32_LEAN_AND_MEAN #define COBJMACROS #include #include #include struct nk_d3d9_vertex { /* D3d9 FFP requires three coordinate position, but nuklear writes only 2 elements projection matrix doesn't use z coordinate => so it can be any value. Member order here is important! Do not rearrange them! */ float position[3]; nk_uchar col[4]; float uv[2]; }; static struct { struct nk_context ctx; struct nk_font_atlas atlas; struct nk_buffer cmds; struct nk_draw_null_texture null; D3DVIEWPORT9 viewport; D3DMATRIX projection; IDirect3DDevice9 *device; IDirect3DTexture9 *texture; IDirect3DStateBlock9 *state; } d3d9; NK_API void nk_d3d9_create_state() { HRESULT hr; hr = IDirect3DDevice9_BeginStateBlock(d3d9.device); NK_ASSERT(SUCCEEDED(hr)); /* vertex format */ IDirect3DDevice9_SetFVF(d3d9.device, D3DFVF_XYZ + D3DFVF_DIFFUSE + D3DFVF_TEX1); /* blend state */ IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_SRCBLEND, D3DBLEND_SRCALPHA); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ALPHABLENDENABLE, TRUE); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_BLENDOP, D3DBLENDOP_ADD); /* render state */ IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_LIGHTING, FALSE); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ZENABLE, FALSE); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ZWRITEENABLE, FALSE); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_CULLMODE, D3DCULL_NONE); IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_SCISSORTESTENABLE, TRUE); /* sampler state */ IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP); IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP); IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); /* texture stage state */ IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLOROP, D3DTOP_MODULATE); IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLORARG1, D3DTA_TEXTURE); IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE); IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE); IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE); IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE); hr = IDirect3DDevice9_EndStateBlock(d3d9.device, &d3d9.state); NK_ASSERT(SUCCEEDED(hr)); } NK_API void nk_d3d9_render(enum nk_anti_aliasing AA) { HRESULT hr; nk_d3d9_create_state(); hr = IDirect3DStateBlock9_Apply(d3d9.state); NK_ASSERT(SUCCEEDED(hr)); /* projection matrix */ IDirect3DDevice9_SetTransform(d3d9.device, D3DTS_PROJECTION, &d3d9.projection); /* viewport */ IDirect3DDevice9_SetViewport(d3d9.device, &d3d9.viewport); /* convert from command queue into draw list and draw to screen */ { struct nk_buffer vbuf, ebuf; const struct nk_draw_command *cmd; const nk_draw_index *offset = NULL; UINT vertex_count; /* fill converting configuration */ struct nk_convert_config config; NK_STORAGE const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d9_vertex, position)}, {NK_VERTEX_COLOR, NK_FORMAT_B8G8R8A8, NK_OFFSETOF(struct nk_d3d9_vertex, col)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d9_vertex, uv)}, {NK_VERTEX_LAYOUT_END} }; memset(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_d3d9_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_d3d9_vertex); config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.null = d3d9.null; /* convert shapes into vertexes */ nk_buffer_init_default(&vbuf); nk_buffer_init_default(&ebuf); nk_convert(&d3d9.ctx, &d3d9.cmds, &vbuf, &ebuf, &config); /* iterate over and execute each draw command */ offset = (const nk_draw_index *)nk_buffer_memory_const(&ebuf); vertex_count = (UINT)vbuf.needed / sizeof(struct nk_d3d9_vertex); nk_draw_foreach(cmd, &d3d9.ctx, &d3d9.cmds) { RECT scissor; if (!cmd->elem_count) continue; hr = IDirect3DDevice9_SetTexture(d3d9.device, 0, (IDirect3DBaseTexture9 *)cmd->texture.ptr); NK_ASSERT(SUCCEEDED(hr)); scissor.left = (LONG)cmd->clip_rect.x; scissor.right = (LONG)(cmd->clip_rect.x + cmd->clip_rect.w); scissor.top = (LONG)cmd->clip_rect.y; scissor.bottom = (LONG)(cmd->clip_rect.y + cmd->clip_rect.h); hr = IDirect3DDevice9_SetScissorRect(d3d9.device, &scissor); NK_ASSERT(SUCCEEDED(hr)); NK_ASSERT(sizeof(nk_draw_index) == sizeof(NK_UINT16)); hr = IDirect3DDevice9_DrawIndexedPrimitiveUP(d3d9.device, D3DPT_TRIANGLELIST, 0, vertex_count, cmd->elem_count/3, offset, D3DFMT_INDEX16, nk_buffer_memory_const(&vbuf), sizeof(struct nk_d3d9_vertex)); NK_ASSERT(SUCCEEDED(hr)); offset += cmd->elem_count; } nk_buffer_free(&vbuf); nk_buffer_free(&ebuf); } nk_clear(&d3d9.ctx); IDirect3DStateBlock9_Apply(d3d9.state); IDirect3DStateBlock9_Release(d3d9.state); } static void nk_d3d9_get_projection_matrix(int width, int height, float *result) { const float L = 0.5f; const float R = (float)width + 0.5f; const float T = 0.5f; const float B = (float)height + 0.5f; float matrix[4][4] = { { 2.0f / (R - L), 0.0f, 0.0f, 0.0f }, { 0.0f, 2.0f / (T - B), 0.0f, 0.0f }, { 0.0f, 0.0f, 0.0f, 0.0f }, { (R + L) / (L - R), (T + B) / (B - T), 0.0f, 1.0f }, }; memcpy(result, matrix, sizeof(matrix)); } NK_API void nk_d3d9_release(void) { IDirect3DTexture9_Release(d3d9.texture); } static void nk_d3d9_create_font_texture() { int w, h, y; const void *image; HRESULT hr; D3DLOCKED_RECT locked; image = nk_font_atlas_bake(&d3d9.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); hr = IDirect3DDevice9_CreateTexture(d3d9.device, w, h, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &d3d9.texture, NULL); NK_ASSERT(SUCCEEDED(hr)); hr = IDirect3DTexture9_LockRect(d3d9.texture, 0, &locked, NULL, 0); NK_ASSERT(SUCCEEDED(hr)); for (y = 0; y < h; y++) { void *src = (char *)image + y * w * 4; void *dst = (char *)locked.pBits + y * locked.Pitch; memcpy(dst, src, w * 4); } hr = IDirect3DTexture9_UnlockRect(d3d9.texture, 0); NK_ASSERT(SUCCEEDED(hr)); nk_font_atlas_end(&d3d9.atlas, nk_handle_ptr(d3d9.texture), &d3d9.null); } NK_API void nk_d3d9_resize(int width, int height) { if (d3d9.texture) { nk_d3d9_create_font_texture(); } nk_d3d9_create_state(); nk_d3d9_get_projection_matrix(width, height, &d3d9.projection.m[0][0]); d3d9.viewport.Width = width; d3d9.viewport.Height = height; } NK_API int nk_d3d9_handle_event(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_KEYDOWN: case WM_KEYUP: case WM_SYSKEYDOWN: case WM_SYSKEYUP: { int down = !((lparam >> 31) & 1); int ctrl = GetKeyState(VK_CONTROL) & (1 << 15); switch (wparam) { case VK_SHIFT: case VK_LSHIFT: case VK_RSHIFT: nk_input_key(&d3d9.ctx, NK_KEY_SHIFT, down); return 1; case VK_DELETE: nk_input_key(&d3d9.ctx, NK_KEY_DEL, down); return 1; case VK_RETURN: nk_input_key(&d3d9.ctx, NK_KEY_ENTER, down); return 1; case VK_TAB: nk_input_key(&d3d9.ctx, NK_KEY_TAB, down); return 1; case VK_LEFT: if (ctrl) nk_input_key(&d3d9.ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(&d3d9.ctx, NK_KEY_LEFT, down); return 1; case VK_RIGHT: if (ctrl) nk_input_key(&d3d9.ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(&d3d9.ctx, NK_KEY_RIGHT, down); return 1; case VK_BACK: nk_input_key(&d3d9.ctx, NK_KEY_BACKSPACE, down); return 1; case VK_HOME: nk_input_key(&d3d9.ctx, NK_KEY_TEXT_START, down); nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_START, down); return 1; case VK_END: nk_input_key(&d3d9.ctx, NK_KEY_TEXT_END, down); nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_END, down); return 1; case VK_NEXT: nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_DOWN, down); return 1; case VK_PRIOR: nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_UP, down); return 1; case 'C': if (ctrl) { nk_input_key(&d3d9.ctx, NK_KEY_COPY, down); return 1; } break; case 'V': if (ctrl) { nk_input_key(&d3d9.ctx, NK_KEY_PASTE, down); return 1; } break; case 'X': if (ctrl) { nk_input_key(&d3d9.ctx, NK_KEY_CUT, down); return 1; } break; case 'Z': if (ctrl) { nk_input_key(&d3d9.ctx, NK_KEY_TEXT_UNDO, down); return 1; } break; case 'R': if (ctrl) { nk_input_key(&d3d9.ctx, NK_KEY_TEXT_REDO, down); return 1; } break; } return 0; } case WM_CHAR: if (wparam >= 32) { nk_input_unicode(&d3d9.ctx, (nk_rune)wparam); return 1; } break; case WM_LBUTTONDOWN: nk_input_button(&d3d9.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_LBUTTONUP: nk_input_button(&d3d9.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); nk_input_button(&d3d9.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_RBUTTONDOWN: nk_input_button(&d3d9.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_RBUTTONUP: nk_input_button(&d3d9.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MBUTTONDOWN: nk_input_button(&d3d9.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_MBUTTONUP: nk_input_button(&d3d9.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MOUSEWHEEL: nk_input_scroll(&d3d9.ctx, nk_vec2(0,(float)(short)HIWORD(wparam) / WHEEL_DELTA)); return 1; case WM_MOUSEMOVE: nk_input_motion(&d3d9.ctx, (short)LOWORD(lparam), (short)HIWORD(lparam)); return 1; case WM_LBUTTONDBLCLK: nk_input_button(&d3d9.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); return 1; } return 0; } static void nk_d3d9_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { (void)usr; if (!IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) { return; } HGLOBAL mem = GetClipboardData(CF_UNICODETEXT); if (!mem) { CloseClipboard(); return; } SIZE_T size = GlobalSize(mem) - 1; if (!size) { CloseClipboard(); return; } LPCWSTR wstr = (LPCWSTR)GlobalLock(mem); if (!wstr) { CloseClipboard(); return; } int utf8size = WideCharToMultiByte(CP_UTF8, 0, wstr, (int)size / sizeof(wchar_t), NULL, 0, NULL, NULL); if (utf8size) { char *utf8 = (char *)malloc(utf8size); if (utf8) { WideCharToMultiByte(CP_UTF8, 0, wstr, (int)size / sizeof(wchar_t), utf8, utf8size, NULL, NULL); nk_textedit_paste(edit, utf8, utf8size); free(utf8); } } GlobalUnlock(mem); CloseClipboard(); } static void nk_d3d9_clipboard_copy(nk_handle usr, const char *text, int len) { (void)usr; if (!OpenClipboard(NULL)) { return; } int wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); if (wsize) { HGLOBAL mem = GlobalAlloc(GMEM_MOVEABLE, (wsize + 1) * sizeof(wchar_t)); if (mem) { wchar_t *wstr = (wchar_t*)GlobalLock(mem); if (wstr) { MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); wstr[wsize] = 0; GlobalUnlock(mem); SetClipboardData(CF_UNICODETEXT, mem); } } } CloseClipboard(); } NK_API struct nk_context* nk_d3d9_init(IDirect3DDevice9 *device, int width, int height) { d3d9.device = device; IDirect3DDevice9_AddRef(device); nk_init_default(&d3d9.ctx, 0); d3d9.state = NULL; d3d9.texture = NULL; d3d9.ctx.clip.copy = nk_d3d9_clipboard_copy; d3d9.ctx.clip.paste = nk_d3d9_clipboard_paste; d3d9.ctx.clip.userdata = nk_handle_ptr(0); nk_buffer_init_default(&d3d9.cmds); /* viewport */ d3d9.viewport.X = 0; d3d9.viewport.Y = 0; d3d9.viewport.MinZ = 0.0f; d3d9.viewport.MaxZ = 1.0f; nk_d3d9_resize(width, height); return &d3d9.ctx; } NK_API void nk_d3d9_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&d3d9.atlas); nk_font_atlas_begin(&d3d9.atlas); *atlas = &d3d9.atlas; } NK_API void nk_d3d9_font_stash_end(void) { nk_d3d9_create_font_texture(); if (d3d9.atlas.default_font) nk_style_set_font(&d3d9.ctx, &d3d9.atlas.default_font->handle); } NK_API void nk_d3d9_shutdown(void) { nk_d3d9_release(); nk_font_atlas_clear(&d3d9.atlas); nk_buffer_free(&d3d9.cmds); nk_free(&d3d9.ctx); } #endif ================================================ FILE: demo/gdi/build.bat ================================================ @echo off rem This will use VS2015 for compiler call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 cl /nologo /W3 /O2 /fp:fast /Gm- /Fedemo.exe main.c user32.lib gdi32.lib Msimg32.lib /link /incremental:no ================================================ FILE: demo/gdi/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #define WIN32_LEAN_AND_MEAN #include #include #include #include #include #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_GDI_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_gdi.h" /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static LRESULT CALLBACK WindowProc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_DESTROY: PostQuitMessage(0); return 0; } if (nk_gdi_handle_event(wnd, msg, wparam, lparam)) return 0; return DefWindowProcW(wnd, msg, wparam, lparam); } int main(void) { GdiFont* font; struct nk_context *ctx; WNDCLASSW wc; ATOM atom; RECT rect = { 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT }; DWORD style = WS_OVERLAPPEDWINDOW; DWORD exstyle = WS_EX_APPWINDOW; HWND wnd; HDC dc; int running = 1; int needs_refresh = 1; /* Win32 */ memset(&wc, 0, sizeof(wc)); wc.style = CS_DBLCLKS; wc.lpfnWndProc = WindowProc; wc.hInstance = GetModuleHandleW(0); wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.lpszClassName = L"NuklearWindowClass"; atom = RegisterClassW(&wc); AdjustWindowRectEx(&rect, style, FALSE, exstyle); wnd = CreateWindowExW(exstyle, wc.lpszClassName, L"Nuklear Demo", style | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, wc.hInstance, NULL); dc = GetDC(wnd); /* GUI */ font = nk_gdifont_create("Arial", 14); ctx = nk_gdi_init(font, dc, WINDOW_WIDTH, WINDOW_HEIGHT); /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif while (running) { /* Input */ MSG msg; nk_input_begin(ctx); if (needs_refresh == 0) { if (GetMessageW(&msg, NULL, 0, 0) <= 0) running = 0; else { TranslateMessage(&msg); DispatchMessageW(&msg); } needs_refresh = 1; } else needs_refresh = 0; while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) running = 0; TranslateMessage(&msg); DispatchMessageW(&msg); needs_refresh = 1; } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ nk_gdi_render(nk_rgb(30,30,30)); } nk_gdifont_del(font); ReleaseDC(wnd, dc); UnregisterClassW(wc.lpszClassName, wc.hInstance); return 0; } ================================================ FILE: demo/gdi/nuklear_gdi.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_GDI_H_ #define NK_GDI_H_ #define WIN32_LEAN_AND_MEAN #include typedef struct GdiFont GdiFont; NK_API struct nk_context* nk_gdi_init(GdiFont *font, HDC window_dc, unsigned int width, unsigned int height); NK_API int nk_gdi_handle_event(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam); NK_API void nk_gdi_render(struct nk_color clear); NK_API void nk_gdi_shutdown(void); /* font */ NK_API GdiFont* nk_gdifont_create(const char *name, int size); NK_API void nk_gdifont_del(GdiFont *font); NK_API void nk_gdi_set_font(GdiFont *font); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_GDI_IMPLEMENTATION #include #include struct GdiFont { struct nk_user_font nk; int height; HFONT handle; HDC dc; }; static struct { HBITMAP bitmap; HDC window_dc; HDC memory_dc; unsigned int width; unsigned int height; struct nk_context ctx; } gdi; static void nk_create_image(struct nk_image * image, const char * frame_buffer, const int width, const int height) { if (image && frame_buffer && (width > 0) && (height > 0)) { image->w = width; image->h = height; image->region[0] = 0; image->region[1] = 0; image->region[2] = width; image->region[3] = height; INT row = ((width * 3 + 3) & ~3); BITMAPINFO bi = { 0 }; bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); bi.bmiHeader.biWidth = width; bi.bmiHeader.biHeight = height; bi.bmiHeader.biPlanes = 1; bi.bmiHeader.biBitCount = 24; bi.bmiHeader.biCompression = BI_RGB; bi.bmiHeader.biSizeImage = row * height; LPBYTE lpBuf, pb = NULL; HBITMAP hbm = CreateDIBSection(NULL, &bi, DIB_RGB_COLORS, (void**)&lpBuf, NULL, 0); pb = lpBuf + row * height; unsigned char * src = (unsigned char *)frame_buffer; for (int v = 0; vhandle.ptr = hbm; } } static void nk_delete_image(struct nk_image * image) { if (image && image->handle.id != 0) { HBITMAP hbm = (HBITMAP)image->handle.ptr; DeleteObject(hbm); memset(image, 0, sizeof(struct nk_image)); } } static void nk_gdi_draw_image(short x, short y, unsigned short w, unsigned short h, struct nk_image img, struct nk_color col) { HBITMAP hbm = (HBITMAP)img.handle.ptr; HDC hDCBits; BITMAP bitmap; if (!gdi.memory_dc || !hbm) return; hDCBits = CreateCompatibleDC(gdi.memory_dc); GetObject(hbm, sizeof(BITMAP), (LPSTR)&bitmap); SelectObject(hDCBits, hbm); StretchBlt(gdi.memory_dc, x, y, w, h, hDCBits, 0, 0, bitmap.bmWidth, bitmap.bmHeight, SRCCOPY); DeleteDC(hDCBits); } static COLORREF convert_color(struct nk_color c) { return c.r | (c.g << 8) | (c.b << 16); } static void nk_gdi_scissor(HDC dc, float x, float y, float w, float h) { SelectClipRgn(dc, NULL); IntersectClipRect(dc, (int)x, (int)y, (int)(x + w + 1), (int)(y + h + 1)); } static void nk_gdi_stroke_line(HDC dc, short x0, short y0, short x1, short y1, unsigned int line_thickness, struct nk_color col) { COLORREF color = convert_color(col); HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } MoveToEx(dc, x0, y0, NULL); LineTo(dc, x1, y1); if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_stroke_rect(HDC dc, short x, short y, unsigned short w, unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } HGDIOBJ br = SelectObject(dc, GetStockObject(NULL_BRUSH)); if (r == 0) { Rectangle(dc, x, y, x + w, y + h); } else { RoundRect(dc, x, y, x + w, y + h, r, r); } SelectObject(dc, br); if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_fill_rect(HDC dc, short x, short y, unsigned short w, unsigned short h, unsigned short r, struct nk_color col) { COLORREF color = convert_color(col); if (r == 0) { RECT rect = { x, y, x + w, y + h }; SetBkColor(dc, color); ExtTextOutW(dc, 0, 0, ETO_OPAQUE, &rect, NULL, 0, NULL); } else { SetDCPenColor(dc, color); SetDCBrushColor(dc, color); RoundRect(dc, x, y, x + w, y + h, r, r); } } static void nk_gdi_set_vertexColor(PTRIVERTEX tri, struct nk_color col) { tri->Red = col.r << 8; tri->Green = col.g << 8; tri->Blue = col.b << 8; tri->Alpha = 0xff << 8; } static void nk_gdi_rect_multi_color(HDC dc, short x, short y, unsigned short w, unsigned short h, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom) { BLENDFUNCTION alphaFunction; GRADIENT_RECT gRect; GRADIENT_TRIANGLE gTri[2]; TRIVERTEX vt[4]; alphaFunction.BlendOp = AC_SRC_OVER; alphaFunction.BlendFlags = 0; alphaFunction.SourceConstantAlpha = 0; alphaFunction.AlphaFormat = AC_SRC_ALPHA; /* TODO: This Case Needs Repair.*/ /* Top Left Corner */ vt[0].x = x; vt[0].y = y; nk_gdi_set_vertexColor(&vt[0], left); /* Top Right Corner */ vt[1].x = x+w; vt[1].y = y; nk_gdi_set_vertexColor(&vt[1], top); /* Bottom Left Corner */ vt[2].x = x; vt[2].y = y+h; nk_gdi_set_vertexColor(&vt[2], right); /* Bottom Right Corner */ vt[3].x = x+w; vt[3].y = y+h; nk_gdi_set_vertexColor(&vt[3], bottom); gTri[0].Vertex1 = 0; gTri[0].Vertex2 = 1; gTri[0].Vertex3 = 2; gTri[1].Vertex1 = 2; gTri[1].Vertex2 = 1; gTri[1].Vertex3 = 3; GdiGradientFill(dc, vt, 4, gTri, 2 , GRADIENT_FILL_TRIANGLE); AlphaBlend(gdi.window_dc, x, y, x+w, y+h,gdi.memory_dc, x, y, x+w, y+h,alphaFunction); } static void nk_gdi_fill_triangle(HDC dc, short x0, short y0, short x1, short y1, short x2, short y2, struct nk_color col) { COLORREF color = convert_color(col); POINT points[] = { { x0, y0 }, { x1, y1 }, { x2, y2 }, }; SetDCPenColor(dc, color); SetDCBrushColor(dc, color); Polygon(dc, points, 3); } static void nk_gdi_stroke_triangle(HDC dc, short x0, short y0, short x1, short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); POINT points[] = { { x0, y0 }, { x1, y1 }, { x2, y2 }, { x0, y0 }, }; HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } Polyline(dc, points, 4); if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_fill_polygon(HDC dc, const struct nk_vec2i *pnts, int count, struct nk_color col) { int i = 0; #define MAX_POINTS 64 POINT points[MAX_POINTS]; COLORREF color = convert_color(col); SetDCBrushColor(dc, color); SetDCPenColor(dc, color); for (i = 0; i < count && i < MAX_POINTS; ++i) { points[i].x = pnts[i].x; points[i].y = pnts[i].y; } Polygon(dc, points, i); #undef MAX_POINTS } static void nk_gdi_stroke_polygon(HDC dc, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } if (count > 0) { int i; MoveToEx(dc, pnts[0].x, pnts[0].y, NULL); for (i = 1; i < count; ++i) LineTo(dc, pnts[i].x, pnts[i].y); LineTo(dc, pnts[0].x, pnts[0].y); } if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_stroke_polyline(HDC dc, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } if (count > 0) { int i; MoveToEx(dc, pnts[0].x, pnts[0].y, NULL); for (i = 1; i < count; ++i) LineTo(dc, pnts[i].x, pnts[i].y); } if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_fill_circle(HDC dc, short x, short y, unsigned short w, unsigned short h, struct nk_color col) { COLORREF color = convert_color(col); SetDCBrushColor(dc, color); SetDCPenColor(dc, color); Ellipse(dc, x, y, x + w, y + h); } static void nk_gdi_stroke_circle(HDC dc, short x, short y, unsigned short w, unsigned short h, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } SetDCBrushColor(dc, OPAQUE); Ellipse(dc, x, y, x + w, y + h); if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_stroke_curve(HDC dc, struct nk_vec2i p1, struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4, unsigned short line_thickness, struct nk_color col) { COLORREF color = convert_color(col); POINT p[] = { { p1.x, p1.y }, { p2.x, p2.y }, { p3.x, p3.y }, { p4.x, p4.y }, }; HPEN pen = NULL; if (line_thickness == 1) { SetDCPenColor(dc, color); } else { pen = CreatePen(PS_SOLID, line_thickness, color); SelectObject(dc, pen); } SetDCBrushColor(dc, OPAQUE); PolyBezier(dc, p, 4); if (pen) { SelectObject(dc, GetStockObject(DC_PEN)); DeleteObject(pen); } } static void nk_gdi_draw_text(HDC dc, short x, short y, unsigned short w, unsigned short h, const char *text, int len, GdiFont *font, struct nk_color cbg, struct nk_color cfg) { int wsize; WCHAR* wstr; if(!text || !font || !len) return; wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); wstr = (WCHAR*)_alloca(wsize * sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); SetBkColor(dc, convert_color(cbg)); SetTextColor(dc, convert_color(cfg)); SelectObject(dc, font->handle); ExtTextOutW(dc, x, y, ETO_OPAQUE, NULL, wstr, wsize, NULL); } static void nk_gdi_clear(HDC dc, struct nk_color col) { COLORREF color = convert_color(col); RECT rect = { 0, 0, gdi.width, gdi.height }; SetBkColor(dc, color); ExtTextOutW(dc, 0, 0, ETO_OPAQUE, &rect, NULL, 0, NULL); } static void nk_gdi_blit(HDC dc) { BitBlt(dc, 0, 0, gdi.width, gdi.height, gdi.memory_dc, 0, 0, SRCCOPY); } GdiFont* nk_gdifont_create(const char *name, int size) { TEXTMETRICW metric; GdiFont *font = (GdiFont*)calloc(1, sizeof(GdiFont)); if (!font) return NULL; font->dc = CreateCompatibleDC(0); font->handle = CreateFontA(size, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY, DEFAULT_PITCH | FF_DONTCARE, name); SelectObject(font->dc, font->handle); GetTextMetricsW(font->dc, &metric); font->height = metric.tmHeight; return font; } static float nk_gdifont_get_text_width(nk_handle handle, float height, const char *text, int len) { GdiFont *font = (GdiFont*)handle.ptr; SIZE size; int wsize; WCHAR* wstr; if (!font || !text) return 0; wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); wstr = (WCHAR*)_alloca(wsize * sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); if (GetTextExtentPoint32W(font->dc, wstr, wsize, &size)) return (float)size.cx; return -1.0f; } void nk_gdifont_del(GdiFont *font) { if(!font) return; DeleteObject(font->handle); DeleteDC(font->dc); free(font); } static void nk_gdi_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { (void)usr; if (IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) { HGLOBAL mem = GetClipboardData(CF_UNICODETEXT); if (mem) { SIZE_T size = GlobalSize(mem) - 1; if (size) { LPCWSTR wstr = (LPCWSTR)GlobalLock(mem); if (wstr) { int utf8size = WideCharToMultiByte(CP_UTF8, 0, wstr, (int)(size / sizeof(wchar_t)), NULL, 0, NULL, NULL); if (utf8size) { char* utf8 = (char*)malloc(utf8size); if (utf8) { WideCharToMultiByte(CP_UTF8, 0, wstr, (int)(size / sizeof(wchar_t)), utf8, utf8size, NULL, NULL); nk_textedit_paste(edit, utf8, utf8size); free(utf8); } } GlobalUnlock(mem); } } } CloseClipboard(); } } static void nk_gdi_clipboard_copy(nk_handle usr, const char *text, int len) { if (OpenClipboard(NULL)) { int wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); if (wsize) { HGLOBAL mem = (HGLOBAL)GlobalAlloc(GMEM_MOVEABLE, (wsize + 1) * sizeof(wchar_t)); if (mem) { wchar_t* wstr = (wchar_t*)GlobalLock(mem); if (wstr) { MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); wstr[wsize] = 0; GlobalUnlock(mem); SetClipboardData(CF_UNICODETEXT, mem); } } } CloseClipboard(); } } NK_API struct nk_context* nk_gdi_init(GdiFont *gdifont, HDC window_dc, unsigned int width, unsigned int height) { struct nk_user_font *font = &gdifont->nk; font->userdata = nk_handle_ptr(gdifont); font->height = (float)gdifont->height; font->width = nk_gdifont_get_text_width; gdi.bitmap = CreateCompatibleBitmap(window_dc, width, height); gdi.window_dc = window_dc; gdi.memory_dc = CreateCompatibleDC(window_dc); gdi.width = width; gdi.height = height; SelectObject(gdi.memory_dc, gdi.bitmap); nk_init_default(&gdi.ctx, font); gdi.ctx.clip.copy = nk_gdi_clipboard_copy; gdi.ctx.clip.paste = nk_gdi_clipboard_paste; return &gdi.ctx; } NK_API void nk_gdi_set_font(GdiFont *gdifont) { struct nk_user_font *font = &gdifont->nk; font->userdata = nk_handle_ptr(gdifont); font->height = (float)gdifont->height; font->width = nk_gdifont_get_text_width; nk_style_set_font(&gdi.ctx, font); } NK_API int nk_gdi_handle_event(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_SIZE: { unsigned width = LOWORD(lparam); unsigned height = HIWORD(lparam); if (width != gdi.width || height != gdi.height) { DeleteObject(gdi.bitmap); gdi.bitmap = CreateCompatibleBitmap(gdi.window_dc, width, height); gdi.width = width; gdi.height = height; SelectObject(gdi.memory_dc, gdi.bitmap); } break; } case WM_PAINT: { PAINTSTRUCT paint; HDC dc = BeginPaint(wnd, &paint); nk_gdi_blit(dc); EndPaint(wnd, &paint); return 1; } case WM_KEYDOWN: case WM_KEYUP: case WM_SYSKEYDOWN: case WM_SYSKEYUP: { int down = !((lparam >> 31) & 1); int ctrl = GetKeyState(VK_CONTROL) & (1 << 15); switch (wparam) { case VK_SHIFT: case VK_LSHIFT: case VK_RSHIFT: nk_input_key(&gdi.ctx, NK_KEY_SHIFT, down); return 1; case VK_DELETE: nk_input_key(&gdi.ctx, NK_KEY_DEL, down); return 1; case VK_RETURN: nk_input_key(&gdi.ctx, NK_KEY_ENTER, down); return 1; case VK_TAB: nk_input_key(&gdi.ctx, NK_KEY_TAB, down); return 1; case VK_LEFT: if (ctrl) nk_input_key(&gdi.ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(&gdi.ctx, NK_KEY_LEFT, down); return 1; case VK_RIGHT: if (ctrl) nk_input_key(&gdi.ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(&gdi.ctx, NK_KEY_RIGHT, down); return 1; case VK_BACK: nk_input_key(&gdi.ctx, NK_KEY_BACKSPACE, down); return 1; case VK_HOME: nk_input_key(&gdi.ctx, NK_KEY_TEXT_START, down); nk_input_key(&gdi.ctx, NK_KEY_SCROLL_START, down); return 1; case VK_END: nk_input_key(&gdi.ctx, NK_KEY_TEXT_END, down); nk_input_key(&gdi.ctx, NK_KEY_SCROLL_END, down); return 1; case VK_NEXT: nk_input_key(&gdi.ctx, NK_KEY_SCROLL_DOWN, down); return 1; case VK_PRIOR: nk_input_key(&gdi.ctx, NK_KEY_SCROLL_UP, down); return 1; case 'C': if (ctrl) { nk_input_key(&gdi.ctx, NK_KEY_COPY, down); return 1; } break; case 'V': if (ctrl) { nk_input_key(&gdi.ctx, NK_KEY_PASTE, down); return 1; } break; case 'X': if (ctrl) { nk_input_key(&gdi.ctx, NK_KEY_CUT, down); return 1; } break; case 'Z': if (ctrl) { nk_input_key(&gdi.ctx, NK_KEY_TEXT_UNDO, down); return 1; } break; case 'R': if (ctrl) { nk_input_key(&gdi.ctx, NK_KEY_TEXT_REDO, down); return 1; } break; } return 0; } case WM_CHAR: if (wparam >= 32) { nk_input_unicode(&gdi.ctx, (nk_rune)wparam); return 1; } break; case WM_LBUTTONDOWN: nk_input_button(&gdi.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_LBUTTONUP: nk_input_button(&gdi.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); nk_input_button(&gdi.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_RBUTTONDOWN: nk_input_button(&gdi.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_RBUTTONUP: nk_input_button(&gdi.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MBUTTONDOWN: nk_input_button(&gdi.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_MBUTTONUP: nk_input_button(&gdi.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MOUSEWHEEL: nk_input_scroll(&gdi.ctx, nk_vec2(0,(float)(short)HIWORD(wparam) / WHEEL_DELTA)); return 1; case WM_MOUSEMOVE: nk_input_motion(&gdi.ctx, (short)LOWORD(lparam), (short)HIWORD(lparam)); return 1; case WM_LBUTTONDBLCLK: nk_input_button(&gdi.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); return 1; } return 0; } NK_API void nk_gdi_shutdown(void) { DeleteObject(gdi.memory_dc); DeleteObject(gdi.bitmap); nk_free(&gdi.ctx); } NK_API void nk_gdi_render(struct nk_color clear) { const struct nk_command *cmd; HDC memory_dc = gdi.memory_dc; SelectObject(memory_dc, GetStockObject(DC_PEN)); SelectObject(memory_dc, GetStockObject(DC_BRUSH)); nk_gdi_clear(memory_dc, clear); nk_foreach(cmd, &gdi.ctx) { switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; nk_gdi_scissor(memory_dc, s->x, s->y, s->w, s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; nk_gdi_stroke_line(memory_dc, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; nk_gdi_stroke_rect(memory_dc, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->line_thickness, r->color); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; nk_gdi_fill_rect(memory_dc, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; nk_gdi_stroke_circle(memory_dc, c->x, c->y, c->w, c->h, c->line_thickness, c->color); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_gdi_fill_circle(memory_dc, c->x, c->y, c->w, c->h, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; nk_gdi_stroke_triangle(memory_dc, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; nk_gdi_fill_triangle(memory_dc, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; nk_gdi_stroke_polygon(memory_dc, p->points, p->point_count, p->line_thickness,p->color); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; nk_gdi_fill_polygon(memory_dc, p->points, p->point_count, p->color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; nk_gdi_stroke_polyline(memory_dc, p->points, p->point_count, p->line_thickness, p->color); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_gdi_draw_text(memory_dc, t->x, t->y, t->w, t->h, (const char*)t->string, t->length, (GdiFont*)t->font->userdata.ptr, t->background, t->foreground); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; nk_gdi_stroke_curve(memory_dc, q->begin, q->ctrl[0], q->ctrl[1], q->end, q->line_thickness, q->color); } break; case NK_COMMAND_RECT_MULTI_COLOR: { const struct nk_command_rect_multi_color *r = (const struct nk_command_rect_multi_color *)cmd; nk_gdi_rect_multi_color(memory_dc, r->x, r->y,r->w, r->h, r->left, r->top, r->right, r->bottom); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image *)cmd; nk_gdi_draw_image(i->x, i->y, i->w, i->h, i->img, i->col); } break; case NK_COMMAND_ARC: case NK_COMMAND_ARC_FILLED: default: break; } } nk_gdi_blit(gdi.window_dc); nk_clear(&gdi.ctx); } #endif ================================================ FILE: demo/gdip/build.bat ================================================ @echo off call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 cl /nologo /W3 /O2 /fp:fast /Gm- /Fedemo.exe /D_CRT_SECURE_NO_DEPRECATE main.c user32.lib gdiplus.lib shlwapi.lib /link /incremental:no ================================================ FILE: demo/gdip/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #define WIN32_LEAN_AND_MEAN #include #include #include #include #include #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_GDIP_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_gdip.h" /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static LRESULT CALLBACK WindowProc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_DESTROY: PostQuitMessage(0); return 0; } if (nk_gdip_handle_event(wnd, msg, wparam, lparam)) return 0; return DefWindowProcW(wnd, msg, wparam, lparam); } int main(void) { GdipFont* font; struct nk_context *ctx; WNDCLASSW wc; RECT rect = { 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT }; DWORD style = WS_OVERLAPPEDWINDOW; DWORD exstyle = WS_EX_APPWINDOW; HWND wnd; int running = 1; int needs_refresh = 1; /* Win32 */ memset(&wc, 0, sizeof(wc)); wc.style = CS_DBLCLKS; wc.lpfnWndProc = WindowProc; wc.hInstance = GetModuleHandleW(0); wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.lpszClassName = L"NuklearWindowClass"; RegisterClassW(&wc); AdjustWindowRectEx(&rect, style, FALSE, exstyle); wnd = CreateWindowExW(exstyle, wc.lpszClassName, L"Nuklear Demo", style | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, wc.hInstance, NULL); /* GUI */ ctx = nk_gdip_init(wnd, WINDOW_WIDTH, WINDOW_HEIGHT); font = nk_gdipfont_create("Arial", 12); nk_gdip_set_font(font); /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif while (running) { /* Input */ MSG msg; nk_input_begin(ctx); if (needs_refresh == 0) { if (GetMessageW(&msg, NULL, 0, 0) <= 0) running = 0; else { TranslateMessage(&msg); DispatchMessageW(&msg); } needs_refresh = 1; } else needs_refresh = 0; while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) running = 0; TranslateMessage(&msg); DispatchMessageW(&msg); needs_refresh = 1; } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ nk_gdip_render(NK_ANTI_ALIASING_ON, nk_rgb(30,30,30)); } nk_gdipfont_del(font); nk_gdip_shutdown(); UnregisterClassW(wc.lpszClassName, wc.hInstance); return 0; } ================================================ FILE: demo/gdip/nuklear_gdip.h ================================================ /* * Nuklear - 1.40.8 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_GDIP_H_ #define NK_GDIP_H_ #define WIN32_LEAN_AND_MEAN #include #include /* font */ typedef struct GdipFont GdipFont; NK_API GdipFont* nk_gdipfont_create(const char *name, int size); NK_API GdipFont* nk_gdipfont_create_from_file(const WCHAR* filename, int size); NK_API GdipFont* nk_gdipfont_create_from_memory(const void* membuf, int membufSize, int size); NK_API void nk_gdipfont_del(GdipFont *font); NK_API struct nk_context* nk_gdip_init(HWND hwnd, unsigned int width, unsigned int height); NK_API void nk_gdip_set_font(GdipFont *font); NK_API int nk_gdip_handle_event(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam); NK_API void nk_gdip_render(enum nk_anti_aliasing AA, struct nk_color clear); NK_API void nk_gdip_shutdown(void); /* image */ NK_API struct nk_image nk_gdip_load_image_from_file(const WCHAR* filename); NK_API struct nk_image nk_gdip_load_image_from_memory(const void* membuf, nk_uint membufSize); NK_API void nk_gdip_image_free(struct nk_image image); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_GDIP_IMPLEMENTATION #include #include /* manually declare everything GDI+ needs, because GDI+ headers are not usable from C */ #define WINGDIPAPI __stdcall #define GDIPCONST const typedef struct GpGraphics GpGraphics; typedef struct GpImage GpImage; typedef struct GpPen GpPen; typedef struct GpBrush GpBrush; typedef struct GpStringFormat GpStringFormat; typedef struct GpFont GpFont; typedef struct GpFontFamily GpFontFamily; typedef struct GpFontCollection GpFontCollection; typedef GpImage GpBitmap; typedef GpBrush GpSolidFill; typedef int Status; typedef Status GpStatus; typedef float REAL; typedef DWORD ARGB; typedef POINT GpPoint; typedef enum { TextRenderingHintSystemDefault = 0, TextRenderingHintSingleBitPerPixelGridFit = 1, TextRenderingHintSingleBitPerPixel = 2, TextRenderingHintAntiAliasGridFit = 3, TextRenderingHintAntiAlias = 4, TextRenderingHintClearTypeGridFit = 5 } TextRenderingHint; typedef enum { StringFormatFlagsDirectionRightToLeft = 0x00000001, StringFormatFlagsDirectionVertical = 0x00000002, StringFormatFlagsNoFitBlackBox = 0x00000004, StringFormatFlagsDisplayFormatControl = 0x00000020, StringFormatFlagsNoFontFallback = 0x00000400, StringFormatFlagsMeasureTrailingSpaces = 0x00000800, StringFormatFlagsNoWrap = 0x00001000, StringFormatFlagsLineLimit = 0x00002000, StringFormatFlagsNoClip = 0x00004000 } StringFormatFlags; typedef enum { QualityModeInvalid = -1, QualityModeDefault = 0, QualityModeLow = 1, QualityModeHigh = 2 } QualityMode; typedef enum { SmoothingModeInvalid = QualityModeInvalid, SmoothingModeDefault = QualityModeDefault, SmoothingModeHighSpeed = QualityModeLow, SmoothingModeHighQuality = QualityModeHigh, SmoothingModeNone, SmoothingModeAntiAlias, SmoothingModeAntiAlias8x4 = SmoothingModeAntiAlias, SmoothingModeAntiAlias8x8 } SmoothingMode; typedef enum { FontStyleRegular = 0, FontStyleBold = 1, FontStyleItalic = 2, FontStyleBoldItalic = 3, FontStyleUnderline = 4, FontStyleStrikeout = 8 } FontStyle; typedef enum { FillModeAlternate, FillModeWinding } FillMode; typedef enum { CombineModeReplace, CombineModeIntersect, CombineModeUnion, CombineModeXor, CombineModeExclude, CombineModeComplement } CombineMode; typedef enum { UnitWorld, UnitDisplay, UnitPixel, UnitPoint, UnitInch, UnitDocument, UnitMillimeter } Unit; typedef struct { FLOAT X; FLOAT Y; FLOAT Width; FLOAT Height; } RectF; typedef enum { DebugEventLevelFatal, DebugEventLevelWarning } DebugEventLevel; typedef VOID (WINAPI *DebugEventProc)(DebugEventLevel level, CHAR *message); typedef struct { UINT32 GdiplusVersion; DebugEventProc DebugEventCallback; BOOL SuppressBackgroundThread; BOOL SuppressExternalCodecs; } GdiplusStartupInput; typedef Status (WINAPI *NotificationHookProc)(OUT ULONG_PTR *token); typedef VOID (WINAPI *NotificationUnhookProc)(ULONG_PTR token); typedef struct { NotificationHookProc NotificationHook; NotificationUnhookProc NotificationUnhook; } GdiplusStartupOutput; /* startup & shutdown */ Status WINAPI GdiplusStartup( OUT ULONG_PTR *token, const GdiplusStartupInput *input, OUT GdiplusStartupOutput *output); VOID WINAPI GdiplusShutdown(ULONG_PTR token); /* image */ GpStatus WINGDIPAPI GdipCreateBitmapFromGraphics(INT width, INT height, GpGraphics* target, GpBitmap** bitmap); GpStatus WINGDIPAPI GdipDisposeImage(GpImage *image); GpStatus WINGDIPAPI GdipGetImageGraphicsContext(GpImage *image, GpGraphics **graphics); GpStatus WINGDIPAPI GdipGetImageWidth(GpImage *image, UINT *width); GpStatus WINGDIPAPI GdipGetImageHeight(GpImage *image, UINT *height); GpStatus WINGDIPAPI GdipLoadImageFromFile(GDIPCONST WCHAR* filename, GpImage **image); GpStatus WINGDIPAPI GdipLoadImageFromStream(IStream* stream, GpImage **image); /* pen */ GpStatus WINGDIPAPI GdipCreatePen1(ARGB color, REAL width, Unit unit, GpPen **pen); GpStatus WINGDIPAPI GdipDeletePen(GpPen *pen); GpStatus WINGDIPAPI GdipSetPenWidth(GpPen *pen, REAL width); GpStatus WINGDIPAPI GdipSetPenColor(GpPen *pen, ARGB argb); /* brush */ GpStatus WINGDIPAPI GdipCreateSolidFill(ARGB color, GpSolidFill **brush); GpStatus WINGDIPAPI GdipDeleteBrush(GpBrush *brush); GpStatus WINGDIPAPI GdipSetSolidFillColor(GpSolidFill *brush, ARGB color); /* font */ GpStatus WINGDIPAPI GdipCreateFont( GDIPCONST GpFontFamily *fontFamily, REAL emSize, INT style, Unit unit, GpFont **font ); GpStatus WINGDIPAPI GdipDeleteFont(GpFont* font); GpStatus WINGDIPAPI GdipGetFontSize(GpFont *font, REAL *size); GpStatus WINGDIPAPI GdipCreateFontFamilyFromName(GDIPCONST WCHAR *name, GpFontCollection *fontCollection, GpFontFamily **fontFamily); GpStatus WINGDIPAPI GdipDeleteFontFamily(GpFontFamily *fontFamily); GpStatus WINGDIPAPI GdipStringFormatGetGenericTypographic(GpStringFormat **format); GpStatus WINGDIPAPI GdipSetStringFormatFlags(GpStringFormat *format, INT flags); GpStatus WINGDIPAPI GdipDeleteStringFormat(GpStringFormat *format); GpStatus WINGDIPAPI GdipPrivateAddMemoryFont(GpFontCollection* fontCollection, GDIPCONST void* memory, INT length); GpStatus WINGDIPAPI GdipPrivateAddFontFile(GpFontCollection* fontCollection, GDIPCONST WCHAR* filename); GpStatus WINGDIPAPI GdipNewPrivateFontCollection(GpFontCollection** fontCollection); GpStatus WINGDIPAPI GdipDeletePrivateFontCollection(GpFontCollection** fontCollection); GpStatus WINGDIPAPI GdipGetFontCollectionFamilyList(GpFontCollection* fontCollection, INT numSought, GpFontFamily* gpfamilies[], INT* numFound); GpStatus WINGDIPAPI GdipGetFontCollectionFamilyCount(GpFontCollection* fontCollection, INT* numFound); /* graphics */ GpStatus WINGDIPAPI GdipCreateFromHWND(HWND hwnd, GpGraphics **graphics); GpStatus WINGDIPAPI GdipCreateFromHDC(HDC hdc, GpGraphics **graphics); GpStatus WINGDIPAPI GdipDeleteGraphics(GpGraphics *graphics); GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode smoothingMode); GpStatus WINGDIPAPI GdipSetClipRectI(GpGraphics *graphics, INT x, INT y, INT width, INT height, CombineMode combineMode); GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1, INT y1, INT x2, INT y2); GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x, INT y, INT width, INT height, REAL startAngle, REAL sweepAngle); GpStatus WINGDIPAPI GdipFillPieI(GpGraphics *graphics, GpBrush *brush, INT x, INT y, INT width, INT height, REAL startAngle, REAL sweepAngle); GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x, INT y, INT width, INT height); GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush, INT x, INT y, INT width, INT height); GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush, GDIPCONST GpPoint *points, INT count, FillMode fillMode); GpStatus WINGDIPAPI GdipDrawPolygonI(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPoint *points, INT count); GpStatus WINGDIPAPI GdipFillEllipseI(GpGraphics *graphics, GpBrush *brush, INT x, INT y, INT width, INT height); GpStatus WINGDIPAPI GdipDrawEllipseI(GpGraphics *graphics, GpPen *pen, INT x, INT y, INT width, INT height); GpStatus WINGDIPAPI GdipDrawBezierI(GpGraphics *graphics, GpPen *pen, INT x1, INT y1, INT x2, INT y2, INT x3, INT y3, INT x4, INT y4); GpStatus WINGDIPAPI GdipDrawString( GpGraphics *graphics, GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font, GDIPCONST RectF *layoutRect, GDIPCONST GpStringFormat *stringFormat, GDIPCONST GpBrush *brush ); GpStatus WINGDIPAPI GdipGraphicsClear(GpGraphics *graphics, ARGB color); GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x, INT y); GpStatus WINGDIPAPI GdipDrawImageRectI(GpGraphics *graphics, GpImage *image, INT x, INT y, INT width, INT height); GpStatus WINGDIPAPI GdipMeasureString( GpGraphics *graphics, GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font, GDIPCONST RectF *layoutRect, GDIPCONST GpStringFormat *stringFormat, RectF *boundingBox, INT *codepointsFitted, INT *linesFilled ); GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics, TextRenderingHint mode); LWSTDAPI_(IStream *) SHCreateMemStream(const BYTE *pInit, _In_ UINT cbInit); struct GdipFont { struct nk_user_font nk; GpFont* handle; }; static struct { ULONG_PTR token; GpGraphics *window; GpGraphics *memory; GpImage *bitmap; GpPen *pen; GpSolidFill *brush; GpStringFormat *format; GpFontCollection *fontCollection[10]; INT curFontCollection; struct nk_context ctx; } gdip; static ARGB convert_color(struct nk_color c) { return (c.a << 24) | (c.r << 16) | (c.g << 8) | c.b; } static void nk_gdip_scissor(float x, float y, float w, float h) { GdipSetClipRectI(gdip.memory, (INT)x, (INT)y, (INT)(w + 1), (INT)(h + 1), CombineModeReplace); } static void nk_gdip_stroke_line(short x0, short y0, short x1, short y1, unsigned int line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); GdipDrawLineI(gdip.memory, gdip.pen, x0, y0, x1, y1); } static void nk_gdip_stroke_rect(short x, short y, unsigned short w, unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); if (r == 0) { GdipDrawRectangleI(gdip.memory, gdip.pen, x, y, w, h); } else { INT d = 2 * r; GdipDrawArcI(gdip.memory, gdip.pen, x, y, d, d, 180, 90); GdipDrawLineI(gdip.memory, gdip.pen, x + r, y, x + w - r, y); GdipDrawArcI(gdip.memory, gdip.pen, x + w - d, y, d, d, 270, 90); GdipDrawLineI(gdip.memory, gdip.pen, x + w, y + r, x + w, y + h - r); GdipDrawArcI(gdip.memory, gdip.pen, x + w - d, y + h - d, d, d, 0, 90); GdipDrawLineI(gdip.memory, gdip.pen, x, y + r, x, y + h - r); GdipDrawArcI(gdip.memory, gdip.pen, x, y + h - d, d, d, 90, 90); GdipDrawLineI(gdip.memory, gdip.pen, x + r, y + h, x + w - r, y + h); } } static void nk_gdip_fill_rect(short x, short y, unsigned short w, unsigned short h, unsigned short r, struct nk_color col) { GdipSetSolidFillColor(gdip.brush, convert_color(col)); if (r == 0) { GdipFillRectangleI(gdip.memory, gdip.brush, x, y, w, h); } else { INT d = 2 * r; GdipFillRectangleI(gdip.memory, gdip.brush, x + r, y, w - d, h); GdipFillRectangleI(gdip.memory, gdip.brush, x, y + r, r, h - d); GdipFillRectangleI(gdip.memory, gdip.brush, x + w - r, y + r, r, h - d); GdipFillPieI(gdip.memory, gdip.brush, x, y, d, d, 180, 90); GdipFillPieI(gdip.memory, gdip.brush, x + w - d, y, d, d, 270, 90); GdipFillPieI(gdip.memory, gdip.brush, x + w - d, y + h - d, d, d, 0, 90); GdipFillPieI(gdip.memory, gdip.brush, x, y + h - d, d, d, 90, 90); } } static void nk_gdip_fill_triangle(short x0, short y0, short x1, short y1, short x2, short y2, struct nk_color col) { POINT points[] = { { x0, y0 }, { x1, y1 }, { x2, y2 }, }; GdipSetSolidFillColor(gdip.brush, convert_color(col)); GdipFillPolygonI(gdip.memory, gdip.brush, points, 3, FillModeAlternate); } static void nk_gdip_stroke_triangle(short x0, short y0, short x1, short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col) { POINT points[] = { { x0, y0 }, { x1, y1 }, { x2, y2 }, { x0, y0 }, }; GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); GdipDrawPolygonI(gdip.memory, gdip.pen, points, 4); } static void nk_gdip_fill_polygon(const struct nk_vec2i *pnts, int count, struct nk_color col) { int i = 0; #define MAX_POINTS 64 POINT points[MAX_POINTS]; GdipSetSolidFillColor(gdip.brush, convert_color(col)); for (i = 0; i < count && i < MAX_POINTS; ++i) { points[i].x = pnts[i].x; points[i].y = pnts[i].y; } GdipFillPolygonI(gdip.memory, gdip.brush, points, i, FillModeAlternate); #undef MAX_POINTS } static void nk_gdip_stroke_polygon(const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); if (count > 0) { int i; for (i = 1; i < count; ++i) GdipDrawLineI(gdip.memory, gdip.pen, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y); GdipDrawLineI(gdip.memory, gdip.pen, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y); } } static void nk_gdip_stroke_polyline(const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); if (count > 0) { int i; for (i = 1; i < count; ++i) GdipDrawLineI(gdip.memory, gdip.pen, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y); } } static void nk_gdip_fill_circle(short x, short y, unsigned short w, unsigned short h, struct nk_color col) { GdipSetSolidFillColor(gdip.brush, convert_color(col)); GdipFillEllipseI(gdip.memory, gdip.brush, x, y, w, h); } static void nk_gdip_stroke_circle(short x, short y, unsigned short w, unsigned short h, unsigned short line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); GdipDrawEllipseI(gdip.memory, gdip.pen, x, y, w, h); } static void nk_gdip_stroke_curve(struct nk_vec2i p1, struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4, unsigned short line_thickness, struct nk_color col) { GdipSetPenWidth(gdip.pen, (REAL)line_thickness); GdipSetPenColor(gdip.pen, convert_color(col)); GdipDrawBezierI(gdip.memory, gdip.pen, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y); } static void nk_gdip_draw_text(short x, short y, unsigned short w, unsigned short h, const char *text, int len, GdipFont *font, struct nk_color cbg, struct nk_color cfg) { int wsize; WCHAR* wstr; RectF layout = { (FLOAT)x, (FLOAT)y, (FLOAT)w, (FLOAT)h }; if(!text || !font || !len) return; wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); wstr = (WCHAR*)_alloca(wsize * sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); GdipSetSolidFillColor(gdip.brush, convert_color(cfg)); GdipDrawString(gdip.memory, wstr, wsize, font->handle, &layout, gdip.format, gdip.brush); } static void nk_gdip_draw_image(short x, short y, unsigned short w, unsigned short h, struct nk_image img, struct nk_color col) { GpImage *image = img.handle.ptr; GdipDrawImageRectI(gdip.memory, image, x, y, w, h); } static void nk_gdip_clear(struct nk_color col) { GdipGraphicsClear(gdip.memory, convert_color(col)); } static void nk_gdip_blit(GpGraphics *graphics) { GdipDrawImageI(graphics, gdip.bitmap, 0, 0); } static struct nk_image nk_gdip_image_to_nk(GpImage *image) { struct nk_image img; UINT uwidth, uheight; img = nk_image_ptr( (void*)image ); GdipGetImageHeight(image, &uheight); GdipGetImageWidth(image, &uwidth); img.h = uheight; img.w = uwidth; return img; } struct nk_image nk_gdip_load_image_from_file(const WCHAR *filename) { GpImage *image; if (GdipLoadImageFromFile(filename, &image)) return nk_image_id(0); return nk_gdip_image_to_nk(image); } struct nk_image nk_gdip_load_image_from_memory(const void *membuf, nk_uint membufSize) { GpImage* image; GpStatus status; IStream *stream = SHCreateMemStream((const BYTE*)membuf, membufSize); if (!stream) return nk_image_id(0); status = GdipLoadImageFromStream(stream, &image); stream->lpVtbl->Release(stream); if (status) return nk_image_id(0); return nk_gdip_image_to_nk(image); } void nk_gdip_image_free(struct nk_image image) { if (!image.handle.ptr) return; GdipDisposeImage(image.handle.ptr); } GdipFont* nk_gdipfont_create(const char *name, int size) { GdipFont *font = (GdipFont*)calloc(1, sizeof(GdipFont)); GpFontFamily *family; int wsize = MultiByteToWideChar(CP_UTF8, 0, name, -1, NULL, 0); WCHAR* wname = (WCHAR*)_alloca((wsize + 1) * sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8, 0, name, -1, wname, wsize); wname[wsize] = 0; GdipCreateFontFamilyFromName(wname, NULL, &family); GdipCreateFont(family, (REAL)size, FontStyleRegular, UnitPixel, &font->handle); GdipDeleteFontFamily(family); return font; } GpFontCollection* nk_gdip_getCurFontCollection(){ return gdip.fontCollection[gdip.curFontCollection]; } GdipFont* nk_gdipfont_create_from_collection(int size){ GpFontFamily **families; INT count; GdipFont *font = (GdipFont*)calloc(1, sizeof(GdipFont)); if( GdipGetFontCollectionFamilyCount(nk_gdip_getCurFontCollection(), &count) ) return NULL; families = (GpFontFamily**)calloc(1, sizeof(GpFontFamily*)); if( !families ) return NULL; if( GdipGetFontCollectionFamilyList(nk_gdip_getCurFontCollection(), count, families, &count) ) return NULL; if( count < 1 ) return NULL; if( GdipCreateFont(families[count-1], (REAL)size, FontStyleRegular, UnitPixel, &font->handle) ) return NULL; free(families); gdip.curFontCollection++; return font; } GdipFont* nk_gdipfont_create_from_memory(const void* membuf, int membufSize, int size) { if( !nk_gdip_getCurFontCollection() ) if( GdipNewPrivateFontCollection(&gdip.fontCollection[gdip.curFontCollection]) ) return NULL; if( GdipPrivateAddMemoryFont(nk_gdip_getCurFontCollection(), membuf, membufSize) ) return NULL; return nk_gdipfont_create_from_collection(size); } GdipFont* nk_gdipfont_create_from_file(const WCHAR* filename, int size) { if( !nk_gdip_getCurFontCollection() ) if( GdipNewPrivateFontCollection(&gdip.fontCollection[gdip.curFontCollection]) ) return NULL; if( GdipPrivateAddFontFile(nk_gdip_getCurFontCollection(), filename) ) return NULL; return nk_gdipfont_create_from_collection(size); } static float nk_gdipfont_get_text_width(nk_handle handle, float height, const char *text, int len) { GdipFont *font = (GdipFont *)handle.ptr; RectF layout = { 0.0f, 0.0f, 65536.0f, 65536.0f }; RectF bbox; int wsize; WCHAR* wstr; if (!font || !text) return 0; (void)height; wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); wstr = (WCHAR*)_alloca(wsize * sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); GdipMeasureString(gdip.memory, wstr, wsize, font->handle, &layout, gdip.format, &bbox, NULL, NULL); return bbox.Width; } void nk_gdipfont_del(GdipFont *font) { if(!font) return; GdipDeleteFont(font->handle); free(font); } static void nk_gdip_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { HGLOBAL mem; SIZE_T size; LPCWSTR wstr; int utf8size; char* utf8; (void)usr; if (!IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) return; mem = (HGLOBAL)GetClipboardData(CF_UNICODETEXT); if (!mem) { CloseClipboard(); return; } size = GlobalSize(mem) - 1; if (!size) { CloseClipboard(); return; } wstr = (LPCWSTR)GlobalLock(mem); if (!wstr) { CloseClipboard(); return; } utf8size = WideCharToMultiByte(CP_UTF8, 0, wstr, (int)(size / sizeof(wchar_t)), NULL, 0, NULL, NULL); if (!utf8size) { GlobalUnlock(mem); CloseClipboard(); return; } utf8 = (char*)malloc(utf8size); if (!utf8) { GlobalUnlock(mem); CloseClipboard(); return; } WideCharToMultiByte(CP_UTF8, 0, wstr, (int)(size / sizeof(wchar_t)), utf8, utf8size, NULL, NULL); nk_textedit_paste(edit, utf8, utf8size); free(utf8); GlobalUnlock(mem); CloseClipboard(); } static void nk_gdip_clipboard_copy(nk_handle usr, const char *text, int len) { HGLOBAL mem; wchar_t* wstr; int wsize; (void)usr; if (!OpenClipboard(NULL)) return; wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0); if (!wsize) { CloseClipboard(); return; } mem = (HGLOBAL)GlobalAlloc(GMEM_MOVEABLE, (wsize + 1) * sizeof(wchar_t)); if (!mem) { CloseClipboard(); return; } wstr = (wchar_t*)GlobalLock(mem); if (!wstr) { GlobalFree(mem); CloseClipboard(); return; } MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize); wstr[wsize] = 0; GlobalUnlock(mem); if (!SetClipboardData(CF_UNICODETEXT, mem)) GlobalFree(mem); CloseClipboard(); } NK_API struct nk_context* nk_gdip_init(HWND hwnd, unsigned int width, unsigned int height) { int i; GdiplusStartupInput startup = { 1, NULL, FALSE, TRUE }; GdiplusStartup(&gdip.token, &startup, NULL); GdipCreateFromHWND(hwnd, &gdip.window); GdipCreateBitmapFromGraphics(width, height, gdip.window, &gdip.bitmap); GdipGetImageGraphicsContext(gdip.bitmap, &gdip.memory); GdipCreatePen1(0, 1.0f, UnitPixel, &gdip.pen); GdipCreateSolidFill(0, &gdip.brush); GdipStringFormatGetGenericTypographic(&gdip.format); GdipSetStringFormatFlags(gdip.format, StringFormatFlagsNoFitBlackBox | StringFormatFlagsMeasureTrailingSpaces | StringFormatFlagsNoWrap | StringFormatFlagsNoClip); for(i=0; i< sizeof(gdip.fontCollection)/sizeof(gdip.fontCollection[0]); i++) gdip.fontCollection[i] = NULL; nk_init_default(&gdip.ctx, NULL); gdip.ctx.clip.copy = nk_gdip_clipboard_copy; gdip.ctx.clip.paste = nk_gdip_clipboard_paste; gdip.curFontCollection = 0; return &gdip.ctx; } NK_API void nk_gdip_set_font(GdipFont *gdipfont) { struct nk_user_font *font = &gdipfont->nk; font->userdata = nk_handle_ptr(gdipfont); GdipGetFontSize(gdipfont->handle, &font->height); font->width = nk_gdipfont_get_text_width; nk_style_set_font(&gdip.ctx, font); } NK_API int nk_gdip_handle_event(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch (msg) { case WM_SIZE: if (gdip.window) { unsigned int width = LOWORD(lparam); unsigned int height = HIWORD(lparam); GdipDeleteGraphics(gdip.window); GdipDeleteGraphics(gdip.memory); GdipDisposeImage(gdip.bitmap); GdipCreateFromHWND(wnd, &gdip.window); GdipCreateBitmapFromGraphics(width, height, gdip.window, &gdip.bitmap); GdipGetImageGraphicsContext(gdip.bitmap, &gdip.memory); } break; case WM_PAINT: { PAINTSTRUCT paint; HDC dc = BeginPaint(wnd, &paint); GpGraphics *graphics; GdipCreateFromHDC(dc, &graphics); nk_gdip_blit(graphics); GdipDeleteGraphics(graphics); EndPaint(wnd, &paint); return 1; } case WM_KEYDOWN: case WM_KEYUP: case WM_SYSKEYDOWN: case WM_SYSKEYUP: { int down = !((lparam >> 31) & 1); int ctrl = GetKeyState(VK_CONTROL) & (1 << 15); switch (wparam) { case VK_SHIFT: case VK_LSHIFT: case VK_RSHIFT: nk_input_key(&gdip.ctx, NK_KEY_SHIFT, down); return 1; case VK_DELETE: nk_input_key(&gdip.ctx, NK_KEY_DEL, down); return 1; case VK_RETURN: nk_input_key(&gdip.ctx, NK_KEY_ENTER, down); return 1; case VK_TAB: nk_input_key(&gdip.ctx, NK_KEY_TAB, down); return 1; case VK_LEFT: if (ctrl) nk_input_key(&gdip.ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(&gdip.ctx, NK_KEY_LEFT, down); return 1; case VK_RIGHT: if (ctrl) nk_input_key(&gdip.ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(&gdip.ctx, NK_KEY_RIGHT, down); return 1; case VK_BACK: nk_input_key(&gdip.ctx, NK_KEY_BACKSPACE, down); return 1; case VK_HOME: nk_input_key(&gdip.ctx, NK_KEY_TEXT_START, down); nk_input_key(&gdip.ctx, NK_KEY_SCROLL_START, down); return 1; case VK_END: nk_input_key(&gdip.ctx, NK_KEY_TEXT_END, down); nk_input_key(&gdip.ctx, NK_KEY_SCROLL_END, down); return 1; case VK_NEXT: nk_input_key(&gdip.ctx, NK_KEY_SCROLL_DOWN, down); return 1; case VK_PRIOR: nk_input_key(&gdip.ctx, NK_KEY_SCROLL_UP, down); return 1; case 'C': if (ctrl) { nk_input_key(&gdip.ctx, NK_KEY_COPY, down); return 1; } break; case 'V': if (ctrl) { nk_input_key(&gdip.ctx, NK_KEY_PASTE, down); return 1; } break; case 'X': if (ctrl) { nk_input_key(&gdip.ctx, NK_KEY_CUT, down); return 1; } break; case 'Z': if (ctrl) { nk_input_key(&gdip.ctx, NK_KEY_TEXT_UNDO, down); return 1; } break; case 'R': if (ctrl) { nk_input_key(&gdip.ctx, NK_KEY_TEXT_REDO, down); return 1; } break; } return 0; } case WM_CHAR: if (wparam >= 32) { nk_input_unicode(&gdip.ctx, (nk_rune)wparam); return 1; } break; case WM_LBUTTONDOWN: nk_input_button(&gdip.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_LBUTTONUP: nk_input_button(&gdip.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); nk_input_button(&gdip.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_RBUTTONDOWN: nk_input_button(&gdip.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_RBUTTONUP: nk_input_button(&gdip.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MBUTTONDOWN: nk_input_button(&gdip.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); SetCapture(wnd); return 1; case WM_MBUTTONUP: nk_input_button(&gdip.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0); ReleaseCapture(); return 1; case WM_MOUSEWHEEL: nk_input_scroll(&gdip.ctx, nk_vec2(0,(float)(short)HIWORD(wparam) / WHEEL_DELTA)); return 1; case WM_MOUSEMOVE: nk_input_motion(&gdip.ctx, (short)LOWORD(lparam), (short)HIWORD(lparam)); return 1; case WM_LBUTTONDBLCLK: nk_input_button(&gdip.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1); return 1; } return 0; } NK_API void nk_gdip_shutdown(void) { int i; for(i=0; i< gdip.curFontCollection; i++) GdipDeletePrivateFontCollection( &gdip.fontCollection[i] ); GdipDeleteGraphics(gdip.window); GdipDeleteGraphics(gdip.memory); GdipDisposeImage(gdip.bitmap); GdipDeletePen(gdip.pen); GdipDeleteBrush(gdip.brush); GdipDeleteStringFormat(gdip.format); GdiplusShutdown(gdip.token); nk_free(&gdip.ctx); } NK_API void nk_gdip_prerender_gui(enum nk_anti_aliasing AA) { const struct nk_command *cmd; GdipSetTextRenderingHint(gdip.memory, AA != NK_ANTI_ALIASING_OFF ? TextRenderingHintClearTypeGridFit : TextRenderingHintSingleBitPerPixelGridFit); GdipSetSmoothingMode(gdip.memory, AA != NK_ANTI_ALIASING_OFF ? SmoothingModeHighQuality : SmoothingModeNone); nk_foreach(cmd, &gdip.ctx) { switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; nk_gdip_scissor(s->x, s->y, s->w, s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; nk_gdip_stroke_line(l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; nk_gdip_stroke_rect(r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->line_thickness, r->color); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; nk_gdip_fill_rect(r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; nk_gdip_stroke_circle(c->x, c->y, c->w, c->h, c->line_thickness, c->color); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_gdip_fill_circle(c->x, c->y, c->w, c->h, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; nk_gdip_stroke_triangle(t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; nk_gdip_fill_triangle(t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; nk_gdip_stroke_polygon(p->points, p->point_count, p->line_thickness,p->color); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; nk_gdip_fill_polygon(p->points, p->point_count, p->color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; nk_gdip_stroke_polyline(p->points, p->point_count, p->line_thickness, p->color); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_gdip_draw_text(t->x, t->y, t->w, t->h, (const char*)t->string, t->length, (GdipFont*)t->font->userdata.ptr, t->background, t->foreground); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; nk_gdip_stroke_curve(q->begin, q->ctrl[0], q->ctrl[1], q->end, q->line_thickness, q->color); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image *)cmd; nk_gdip_draw_image(i->x, i->y, i->w, i->h, i->img, i->col); } break; case NK_COMMAND_RECT_MULTI_COLOR: case NK_COMMAND_ARC: case NK_COMMAND_ARC_FILLED: default: break; } } } NK_API void nk_gdip_render_gui(enum nk_anti_aliasing AA) { nk_gdip_prerender_gui(AA); nk_gdip_blit(gdip.window); nk_clear(&gdip.ctx); } NK_API void nk_gdip_render(enum nk_anti_aliasing AA, struct nk_color clear) { nk_gdip_clear(clear); nk_gdip_render_gui(AA); } #endif ================================================ FILE: demo/glfw_opengl2/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = -lglfw3 -lopengl32 -lm -lGLU32 else UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS := -lglfw3 -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib else LIBS = -lglfw -lGL -lm -lGLU endif endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/glfw_opengl2/main.c ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_GLFW_GL2_IMPLEMENTATION #define NK_KEYSTATE_BASED_INPUT #include "../../nuklear.h" #include "nuklear_glfw_gl2.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ #define INCLUDE_OVERVIEW /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static void error_callback(int e, const char *d) {printf("Error %d: %s\n", e, d);} int main(void) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; struct nk_context *ctx; struct nk_colorf bg; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwGetWindowSize(win, &width, &height); /* GUI */ ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_glfw3_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_glfw3_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (!glfwWindowShouldClose(win)) { /* Input */ glfwPollEvents(); nk_glfw3_new_frame(); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ glfwGetWindowSize(win, &width, &height); glViewport(0, 0, width, height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state * with blending, scissor, face culling and depth test and defaults everything * back into a default state. Make sure to either save and restore or * reset your own state after drawing rendering the UI. */ nk_glfw3_render(NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); } nk_glfw3_shutdown(); glfwTerminate(); return 0; } ================================================ FILE: demo/glfw_opengl2/nuklear_glfw_gl2.h ================================================ /* * Nuklear - v1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_GLFW_GL2_H_ #define NK_GLFW_GL2_H_ #include enum nk_glfw_init_state{ NK_GLFW3_DEFAULT = 0, NK_GLFW3_INSTALL_CALLBACKS }; NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state); NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_glfw3_font_stash_end(void); NK_API void nk_glfw3_new_frame(void); NK_API void nk_glfw3_render(enum nk_anti_aliasing); NK_API void nk_glfw3_shutdown(void); NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint); NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_GLFW_GL2_IMPLEMENTATION #ifndef NK_GLFW_TEXT_MAX #define NK_GLFW_TEXT_MAX 256 #endif #ifndef NK_GLFW_DOUBLE_CLICK_LO #define NK_GLFW_DOUBLE_CLICK_LO 0.02 #endif #ifndef NK_GLFW_DOUBLE_CLICK_HI #define NK_GLFW_DOUBLE_CLICK_HI 0.2 #endif struct nk_glfw_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint font_tex; }; struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_glfw { GLFWwindow *win; int width, height; int display_width, display_height; struct nk_glfw_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; struct nk_vec2 fb_scale; unsigned int text[NK_GLFW_TEXT_MAX]; int text_len; struct nk_vec2 scroll; double last_button_click; int is_double_click_down; struct nk_vec2 double_click_pos; } glfw; NK_INTERN void nk_glfw3_device_upload_atlas(const void *image, int width, int height) { struct nk_glfw_device *dev = &glfw.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_glfw3_render(enum nk_anti_aliasing AA) { /* setup global state */ struct nk_glfw_device *dev = &glfw.ogl; glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glEnable(GL_BLEND); glEnable(GL_TEXTURE_2D); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); /* setup viewport/project */ glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); glOrtho(0.0f, glfw.width, glfw.height, 0.0f, -1.0f, 1.0f); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_COLOR_ARRAY); { GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; const nk_draw_index *offset = NULL; struct nk_buffer vbuf, ebuf; /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* convert shapes into vertexes */ nk_buffer_init_default(&vbuf); nk_buffer_init_default(&ebuf); nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config); /* setup vertex buffer pointer */ {const void *vertices = nk_buffer_memory_const(&vbuf); glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp)); glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt)); glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));} /* iterate over and execute each draw command */ offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf); nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * glfw.fb_scale.x), (GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y), (GLint)(cmd->clip_rect.w * glfw.fb_scale.x), (GLint)(cmd->clip_rect.h * glfw.fb_scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&glfw.ctx); nk_buffer_free(&vbuf); nk_buffer_free(&ebuf); } /* default OpenGL state */ glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glDisable(GL_SCISSOR_TEST); glDisable(GL_BLEND); glDisable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, 0); glMatrixMode(GL_MODELVIEW); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); glPopAttrib(); } NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint) { (void)win; if (glfw.text_len < NK_GLFW_TEXT_MAX) glfw.text[glfw.text_len++] = codepoint; } NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff) { (void)win; (void)xoff; glfw.scroll.x += (float)xoff; glfw.scroll.y += (float)yoff; } NK_API void nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods) { double x, y; if (button != GLFW_MOUSE_BUTTON_LEFT) return; glfwGetCursorPos(window, &x, &y); if (action == GLFW_PRESS) { double dt = glfwGetTime() - glfw.last_button_click; if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) { glfw.is_double_click_down = nk_true; glfw.double_click_pos = nk_vec2((float)x, (float)y); } glfw.last_button_click = glfwGetTime(); } else glfw.is_double_click_down = nk_false; } NK_INTERN void nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = glfwGetClipboardString(glfw.win); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } NK_INTERN void nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; glfwSetClipboardString(glfw.win, str); free(str); } NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state) { glfw.win = win; if (init_state == NK_GLFW3_INSTALL_CALLBACKS) { glfwSetScrollCallback(win, nk_gflw3_scroll_callback); glfwSetCharCallback(win, nk_glfw3_char_callback); glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback); } nk_init_default(&glfw.ctx, 0); glfw.ctx.clip.copy = nk_glfw3_clipboard_copy; glfw.ctx.clip.paste = nk_glfw3_clipboard_paste; glfw.ctx.clip.userdata = nk_handle_ptr(0); nk_buffer_init_default(&glfw.ogl.cmds); glfw.is_double_click_down = nk_false; glfw.double_click_pos = nk_vec2(0, 0); return &glfw.ctx; } NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&glfw.atlas); nk_font_atlas_begin(&glfw.atlas); *atlas = &glfw.atlas; } NK_API void nk_glfw3_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_glfw3_device_upload_atlas(image, w, h); nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex), &glfw.ogl.null); if (glfw.atlas.default_font) nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle); } NK_API void nk_glfw3_new_frame(void) { int i; double x, y; struct nk_context *ctx = &glfw.ctx; struct GLFWwindow *win = glfw.win; glfwGetWindowSize(win, &glfw.width, &glfw.height); glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height); glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width; glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height; nk_input_begin(ctx); for (i = 0; i < glfw.text_len; ++i) nk_input_unicode(ctx, glfw.text[i]); /* optional grabbing behavior */ if (ctx->input.mouse.grab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); else if (ctx->input.mouse.ungrab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL); nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS|| glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); } else { nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_COPY, 0); nk_input_key(ctx, NK_KEY_PASTE, 0); nk_input_key(ctx, NK_KEY_CUT, 0); nk_input_key(ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(ctx, (int)x, (int)y); if (ctx->input.mouse.grabbed) { glfwSetCursorPos(glfw.win, (double)ctx->input.mouse.prev.x, (double)ctx->input.mouse.prev.y); ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; } nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down); nk_input_scroll(ctx, glfw.scroll); nk_input_end(&glfw.ctx); glfw.text_len = 0; glfw.scroll = nk_vec2(0,0); } NK_API void nk_glfw3_shutdown(void) { struct nk_glfw_device *dev = &glfw.ogl; nk_font_atlas_clear(&glfw.atlas); nk_free(&glfw.ctx); glDeleteTextures(1, &dev->font_tex); nk_buffer_free(&dev->cmds); memset(&glfw, 0, sizeof(glfw)); } #endif ================================================ FILE: demo/glfw_opengl3/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32 else UNAME_S := $(shell uname -s) GLFW3 := $(shell pkg-config --libs glfw3) ifeq ($(UNAME_S),Darwin) LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib else LIBS = $(GLFW3) -lGL -lm -lGLU -lGLEW endif endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/glfw_opengl3/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_GLFW_GL3_IMPLEMENTATION #define NK_KEYSTATE_BASED_INPUT #include "../../nuklear.h" #include "nuklear_glfw_gl3.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_ELEMENT_BUFFER 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ #define INCLUDE_OVERVIEW /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static void error_callback(int e, const char *d) {printf("Error %d: %s\n", e, d);} int main(void) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; struct nk_context *ctx; struct nk_colorf bg; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); #ifdef __APPLE__ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); #endif win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwGetWindowSize(win, &width, &height); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_glfw3_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_glfw3_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (!glfwWindowShouldClose(win)) { /* Input */ glfwPollEvents(); nk_glfw3_new_frame(); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ glfwGetWindowSize(win, &width, &height); glViewport(0, 0, width, height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); glfwSwapBuffers(win); } nk_glfw3_shutdown(); glfwTerminate(); return 0; } ================================================ FILE: demo/glfw_opengl3/nuklear_glfw_gl3.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_GLFW_GL3_H_ #define NK_GLFW_GL3_H_ #include enum nk_glfw_init_state{ NK_GLFW3_DEFAULT=0, NK_GLFW3_INSTALL_CALLBACKS }; NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state); NK_API void nk_glfw3_shutdown(void); NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_glfw3_font_stash_end(void); NK_API void nk_glfw3_new_frame(void); NK_API void nk_glfw3_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); NK_API void nk_glfw3_device_destroy(void); NK_API void nk_glfw3_device_create(void); NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint); NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff); NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_GLFW_GL3_IMPLEMENTATION #ifndef NK_GLFW_TEXT_MAX #define NK_GLFW_TEXT_MAX 256 #endif #ifndef NK_GLFW_DOUBLE_CLICK_LO #define NK_GLFW_DOUBLE_CLICK_LO 0.02 #endif #ifndef NK_GLFW_DOUBLE_CLICK_HI #define NK_GLFW_DOUBLE_CLICK_HI 0.2 #endif struct nk_glfw_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_glfw { GLFWwindow *win; int width, height; int display_width, display_height; struct nk_glfw_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; struct nk_vec2 fb_scale; unsigned int text[NK_GLFW_TEXT_MAX]; int text_len; struct nk_vec2 scroll; double last_button_click; int is_double_click_down; struct nk_vec2 double_click_pos; } glfw; #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif NK_API void nk_glfw3_device_create(void) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; struct nk_glfw_device *dev = &glfw.ogl; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } NK_INTERN void nk_glfw3_device_upload_atlas(const void *image, int width, int height) { struct nk_glfw_device *dev = &glfw.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_glfw3_device_destroy(void) { struct nk_glfw_device *dev = &glfw.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } NK_API void nk_glfw3_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { struct nk_glfw_device *dev = &glfw.ogl; struct nk_buffer vbuf, ebuf; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)glfw.width; ortho[1][1] /= (GLfloat)glfw.height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ nk_buffer_init_fixed(&vbuf, vertices, (size_t)max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (size_t)max_element_buffer); nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config); } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * glfw.fb_scale.x), (GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y), (GLint)(cmd->clip_rect.w * glfw.fb_scale.x), (GLint)(cmd->clip_rect.h * glfw.fb_scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&glfw.ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint) { (void)win; if (glfw.text_len < NK_GLFW_TEXT_MAX) glfw.text[glfw.text_len++] = codepoint; } NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff) { (void)win; (void)xoff; glfw.scroll.x += (float)xoff; glfw.scroll.y += (float)yoff; } NK_API void nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods) { double x, y; if (button != GLFW_MOUSE_BUTTON_LEFT) return; glfwGetCursorPos(window, &x, &y); if (action == GLFW_PRESS) { double dt = glfwGetTime() - glfw.last_button_click; if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) { glfw.is_double_click_down = nk_true; glfw.double_click_pos = nk_vec2((float)x, (float)y); } glfw.last_button_click = glfwGetTime(); } else glfw.is_double_click_down = nk_false; } NK_INTERN void nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = glfwGetClipboardString(glfw.win); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } NK_INTERN void nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; glfwSetClipboardString(glfw.win, str); free(str); } NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state) { glfw.win = win; if (init_state == NK_GLFW3_INSTALL_CALLBACKS) { glfwSetScrollCallback(win, nk_gflw3_scroll_callback); glfwSetCharCallback(win, nk_glfw3_char_callback); glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback); } nk_init_default(&glfw.ctx, 0); glfw.ctx.clip.copy = nk_glfw3_clipboard_copy; glfw.ctx.clip.paste = nk_glfw3_clipboard_paste; glfw.ctx.clip.userdata = nk_handle_ptr(0); glfw.last_button_click = 0; nk_glfw3_device_create(); glfw.is_double_click_down = nk_false; glfw.double_click_pos = nk_vec2(0, 0); return &glfw.ctx; } NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&glfw.atlas); nk_font_atlas_begin(&glfw.atlas); *atlas = &glfw.atlas; } NK_API void nk_glfw3_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_glfw3_device_upload_atlas(image, w, h); nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex), &glfw.ogl.null); if (glfw.atlas.default_font) nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle); } NK_API void nk_glfw3_new_frame(void) { int i; double x, y; struct nk_context *ctx = &glfw.ctx; struct GLFWwindow *win = glfw.win; glfwGetWindowSize(win, &glfw.width, &glfw.height); glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height); glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width; glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height; nk_input_begin(ctx); for (i = 0; i < glfw.text_len; ++i) nk_input_unicode(ctx, glfw.text[i]); #ifdef NK_GLFW_GL3_MOUSE_GRABBING /* optional grabbing behavior */ if (ctx->input.mouse.grab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); else if (ctx->input.mouse.ungrab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL); #endif nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS|| glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); } else { nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_COPY, 0); nk_input_key(ctx, NK_KEY_PASTE, 0); nk_input_key(ctx, NK_KEY_CUT, 0); nk_input_key(ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(ctx, (int)x, (int)y); #ifdef NK_GLFW_GL3_MOUSE_GRABBING if (ctx->input.mouse.grabbed) { glfwSetCursorPos(glfw.win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y); ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; } #endif nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down); nk_input_scroll(ctx, glfw.scroll); nk_input_end(&glfw.ctx); glfw.text_len = 0; glfw.scroll = nk_vec2(0,0); } NK_API void nk_glfw3_shutdown(void) { nk_font_atlas_clear(&glfw.atlas); nk_free(&glfw.ctx); nk_glfw3_device_destroy(); memset(&glfw, 0, sizeof(glfw)); } #endif ================================================ FILE: demo/glfw_opengl4/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32 else UNAME_S := $(shell uname -s) GLFW3 := $(shell pkg-config --libs glfw3) ifeq ($(UNAME_S),Darwin) LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib else LIBS = $(GLFW3) -lGL -lm -lGLU -lGLEW endif endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/glfw_opengl4/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_GLFW_GL4_IMPLEMENTATION #define NK_KEYSTATE_BASED_INPUT #include "../../nuklear.h" #include "nuklear_glfw_gl4.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_ELEMENT_BUFFER 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ #define INCLUDE_OVERVIEW /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ static void error_callback(int e, const char *d) {printf("Error %d: %s\n", e, d);} int main(void) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; struct nk_context *ctx; struct nk_colorf bg; struct nk_image img; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 5); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); #ifdef __APPLE__ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); #endif win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwGetWindowSize(win, &width, &height); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_glfw3_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_glfw3_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif /* Create bindless texture. * The index returned is not the opengl resource id. * IF you need the GL resource id use: nk_glfw3_get_tex_ogl_id() */ {int tex_index = 0; enum {tex_width = 256, tex_height = 256}; char pixels[tex_width * tex_height * 4]; memset(pixels, 128, sizeof(pixels)); tex_index = nk_glfw3_create_texture(pixels, tex_width, tex_height); img = nk_image_id(tex_index);} bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (!glfwWindowShouldClose(win)) { /* Input */ glfwPollEvents(); nk_glfw3_new_frame(); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* Bindless Texture */ if (nk_begin(ctx, "Texture", nk_rect(250, 150, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { struct nk_command_buffer *canvas = nk_window_get_canvas(ctx); struct nk_rect total_space = nk_window_get_content_region(ctx); nk_draw_image(canvas, total_space, &img, nk_white); } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ glfwGetWindowSize(win, &width, &height); glViewport(0, 0, width, height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_glfw3_render(NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); } nk_glfw3_shutdown(); glfwTerminate(); return 0; } ================================================ FILE: demo/glfw_opengl4/nuklear_glfw_gl4.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_GLFW_GL4_H_ #define NK_GLFW_GL4_H_ #include #include enum nk_glfw_init_state{ NK_GLFW3_DEFAULT = 0, NK_GLFW3_INSTALL_CALLBACKS }; NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state, int max_vertex_buffer, int max_element_buffer); NK_API void nk_glfw3_shutdown(void); NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_glfw3_font_stash_end(void); NK_API void nk_glfw3_new_frame(void); NK_API void nk_glfw3_render(enum nk_anti_aliasing); NK_API void nk_glfw3_device_destroy(void); NK_API void nk_glfw3_device_create(void); NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint); NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff); NK_API void nk_glfw3_mouse_button_callback(GLFWwindow *win, int button, int action, int mods); NK_API GLuint nk_glfw3_get_tex_ogl_id(int tex_index); NK_API GLuint64 nk_glfw3_get_tex_ogl_handle(int tex_index); NK_API int nk_glfw3_create_texture(const void* image, int width, int height); NK_API void nk_glfw3_destroy_texture(int tex_index); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_GLFW_GL4_IMPLEMENTATION #undef NK_GLFW_GL4_IMPLEMENTATION #ifndef NK_GLFW_TEXT_MAX #define NK_GLFW_TEXT_MAX 256 #endif #ifndef NK_GLFW_DOUBLE_CLICK_LO #define NK_GLFW_DOUBLE_CLICK_LO 0.02 #endif #ifndef NK_GLFW_DOUBLE_CLICK_HI #define NK_GLFW_DOUBLE_CLICK_HI 0.2 #endif #ifndef NK_GLFW_MAX_TEXTURES #define NK_GLFW_MAX_TEXTURES 256 #endif struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct nk_glfw_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; int font_tex_index; int max_vertex_buffer; int max_element_buffer; struct nk_glfw_vertex *vert_buffer; int *elem_buffer; GLsync buffer_sync; GLuint tex_ids[NK_GLFW_MAX_TEXTURES]; GLuint64 tex_handles[NK_GLFW_MAX_TEXTURES]; }; static struct nk_glfw { GLFWwindow *win; int width, height; int display_width, display_height; struct nk_glfw_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; struct nk_vec2 fb_scale; unsigned int text[NK_GLFW_TEXT_MAX]; int text_len; struct nk_vec2 scroll; double last_button_click; int is_double_click_down; struct nk_vec2 double_click_pos; } glfw; #define NK_SHADER_VERSION "#version 450 core\n" #define NK_SHADER_BINDLESS "#extension GL_ARB_bindless_texture : require\n" #define NK_SHADER_64BIT "#extension GL_ARB_gpu_shader_int64 : require\n" NK_API void nk_glfw3_device_create() { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION NK_SHADER_BINDLESS NK_SHADER_64BIT "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION NK_SHADER_BINDLESS NK_SHADER_64BIT "precision mediump float;\n" "uniform uint64_t Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " sampler2D smp = sampler2D(Texture);\n" " Out_Color = Frag_Color * texture(smp, Frag_UV.st);\n" "}\n"; struct nk_glfw_device *dev = &glfw.ogl; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); GLint len = 0; glGetShaderiv(dev->vert_shdr, GL_INFO_LOG_LENGTH, &len); if (len > 1) { char *log = (char*)calloc((size_t)len, sizeof(char)); glGetShaderInfoLog(dev->vert_shdr, len, NULL, log); fprintf(stdout, "[GL]: failed to compile shader: %s", log); free(log); } glGetShaderiv(dev->frag_shdr, GL_INFO_LOG_LENGTH, &len); if (len > 1) { char *log = (char*)calloc((size_t)len, sizeof(char)); glGetShaderInfoLog(dev->frag_shdr, len, NULL, log); fprintf(stdout, "[GL]: failed to compile shader: %s", log); free(log); } assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); GLuint pos = (GLuint)dev->attrib_pos; GLuint uv = (GLuint)dev->attrib_uv; GLuint col = (GLuint)dev->attrib_col; glCreateVertexArrays(1, &dev->vao); glCreateBuffers(1, &dev->vbo); glCreateBuffers(1, &dev->ebo); glEnableVertexArrayAttrib(dev->vao, pos); glEnableVertexArrayAttrib(dev->vao, uv); glEnableVertexArrayAttrib(dev->vao, col); glVertexArrayAttribBinding(dev->vao, pos, 0); glVertexArrayAttribBinding(dev->vao, uv, 0); glVertexArrayAttribBinding(dev->vao, col, 0); glVertexArrayAttribFormat(dev->vao, pos, 2, GL_FLOAT, GL_FALSE, vp); glVertexArrayAttribFormat(dev->vao, uv, 2, GL_FLOAT, GL_FALSE, vt); glVertexArrayAttribFormat(dev->vao, col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vc); glVertexArrayElementBuffer(dev->vao, dev->ebo); glVertexArrayVertexBuffer(dev->vao, 0, dev->vbo, 0, vs); } /* Persistent mapped buffers */ {GLsizei vb_size = dev->max_vertex_buffer; GLsizei eb_size = dev->max_element_buffer; GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT; glNamedBufferStorage(dev->vbo, vb_size, 0, flags); glNamedBufferStorage(dev->ebo, eb_size, 0, flags); dev->vert_buffer = (struct nk_glfw_vertex*) glMapNamedBufferRange(dev->vbo, 0, vb_size, flags); dev->elem_buffer = (int*) glMapNamedBufferRange(dev->ebo, 0, eb_size, flags);} memset(dev->tex_ids, 0, sizeof(dev->tex_ids)); memset(dev->tex_handles, 0, sizeof(dev->tex_handles)); } NK_INTERN int nk_glfw3_get_available_tex_index() { int i = 0; struct nk_glfw_device *dev = &glfw.ogl; for (i = 0; i < NK_GLFW_MAX_TEXTURES; i++) { if (dev->tex_ids[i] == 0) return i; } assert(0); /* max textures reached */ return -1; } NK_API GLuint nk_glfw3_get_tex_ogl_id(int tex_index) { struct nk_glfw_device *dev = &glfw.ogl; assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES); return dev->tex_ids[tex_index]; } NK_API GLuint64 nk_glfw3_get_tex_ogl_handle(int tex_index) { struct nk_glfw_device *dev = &glfw.ogl; assert(tex_index >= 0 && tex_index < NK_GLFW_MAX_TEXTURES); return dev->tex_handles[tex_index]; } NK_API int nk_glfw3_create_texture(const void* image, int width, int height) { GLuint id; GLsizei w = (GLsizei)width; GLsizei h = (GLsizei)height; struct nk_glfw_device *dev = &glfw.ogl; int tex_index = nk_glfw3_get_available_tex_index(); if (tex_index < 0) return -1; glCreateTextures(GL_TEXTURE_2D, 1, &id); dev->tex_ids[tex_index] = id; glTextureParameteri(id, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTextureParameteri(id, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTextureParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTextureParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTextureStorage2D(id, 1, GL_RGBA8, w, h); if (image) glTextureSubImage2D(id, 0, 0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, image); else glClearTexImage(id, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); {GLuint64 handle = glGetTextureHandleARB(id); glMakeTextureHandleResidentARB(handle); dev->tex_handles[tex_index] = handle; return tex_index;} } NK_API void nk_glfw3_destroy_texture(int tex_index) { struct nk_glfw_device *dev = &glfw.ogl; GLuint id = nk_glfw3_get_tex_ogl_id(tex_index); if (id == 0) return; {GLuint64 handle = nk_glfw3_get_tex_ogl_handle(tex_index); glMakeTextureHandleNonResidentARB(handle); glDeleteTextures(1, &id); dev->tex_ids[tex_index] = 0; dev->tex_handles[tex_index] = 0;} } NK_INTERN void nk_glfw3_device_upload_atlas(const void *image, int width, int height) { struct nk_glfw_device *dev = &glfw.ogl; dev->font_tex_index = nk_glfw3_create_texture(image, width, height); } NK_API void nk_glfw3_device_destroy(void) { int i = 0; struct nk_glfw_device *dev = &glfw.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); nk_glfw3_destroy_texture(dev->font_tex_index); for (i = 0; i < NK_GLFW_MAX_TEXTURES; i++) nk_glfw3_destroy_texture(i); glUnmapNamedBuffer(dev->vbo); glUnmapNamedBuffer(dev->ebo); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); glDeleteVertexArrays(1, &dev->vao); nk_buffer_free(&dev->cmds); } NK_INTERN void nk_glfw3_wait_for_buffer_unlock() { struct nk_glfw_device *dev = &glfw.ogl; if(!dev->buffer_sync) return; while (1) { GLenum wait = glClientWaitSync(dev->buffer_sync, GL_SYNC_FLUSH_COMMANDS_BIT, 1); if (wait == GL_ALREADY_SIGNALED || wait == GL_CONDITION_SATISFIED) return; } } NK_INTERN void nk_glfw3_lock_buffer() { struct nk_glfw_device *dev = &glfw.ogl; if(dev->buffer_sync) glDeleteSync(dev->buffer_sync); dev->buffer_sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0); } NK_API void nk_glfw3_render(enum nk_anti_aliasing AA) { struct nk_glfw_device *dev = &glfw.ogl; struct nk_buffer vbuf, ebuf; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)glfw.width; ortho[1][1] /= (GLfloat)glfw.height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); /* setup program */ glUseProgram(dev->prog); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; glBindVertexArray(dev->vao); /* load draw vertices & elements directly into vertex + element buffer */ vertices = dev->vert_buffer; elements = dev->elem_buffer; { /* Wait until GPU is done with buffer */ nk_glfw3_wait_for_buffer_unlock(); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ nk_buffer_init_fixed(&vbuf, vertices, (size_t)dev->max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (size_t)dev->max_element_buffer); nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config); } } /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds) { int tex_index; GLuint64 tex_handle; if (!cmd->elem_count) continue; tex_index = cmd->texture.id; tex_handle = nk_glfw3_get_tex_ogl_handle(tex_index); /* tex handle must be made resident in each context that uses it */ if (!glIsTextureHandleResidentARB(tex_handle)) glMakeTextureHandleResidentARB(tex_handle); glUniformHandleui64ARB(dev->uniform_tex, tex_handle); glScissor( (GLint)(cmd->clip_rect.x * glfw.fb_scale.x), (GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y), (GLint)(cmd->clip_rect.w * glfw.fb_scale.x), (GLint)(cmd->clip_rect.h * glfw.fb_scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&glfw.ctx); } /* default OpenGL state */ glUseProgram(0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); /* Lock buffer until GPU has finished draw command */ nk_glfw3_lock_buffer(); } NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint) { (void)win; if (glfw.text_len < NK_GLFW_TEXT_MAX) glfw.text[glfw.text_len++] = codepoint; } NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff) { (void)win; (void)xoff; glfw.scroll.x += (float)xoff; glfw.scroll.y += (float)yoff; } NK_API void nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods) { double x, y; if (button != GLFW_MOUSE_BUTTON_LEFT) return; glfwGetCursorPos(window, &x, &y); if (action == GLFW_PRESS) { double dt = glfwGetTime() - glfw.last_button_click; if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) { glfw.is_double_click_down = nk_true; glfw.double_click_pos = nk_vec2((float)x, (float)y); } glfw.last_button_click = glfwGetTime(); } else glfw.is_double_click_down = nk_false; } NK_INTERN void nk_glfw3_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = glfwGetClipboardString(glfw.win); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } NK_INTERN void nk_glfw3_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; glfwSetClipboardString(glfw.win, str); free(str); } NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state, int max_vertex_buffer, int max_element_buffer) { glfw.win = win; if (init_state == NK_GLFW3_INSTALL_CALLBACKS) { glfwSetScrollCallback(win, nk_gflw3_scroll_callback); glfwSetCharCallback(win, nk_glfw3_char_callback); glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback); } nk_init_default(&glfw.ctx, 0); glfw.ctx.clip.copy = nk_glfw3_clipboard_copy; glfw.ctx.clip.paste = nk_glfw3_clipboard_paste; glfw.ctx.clip.userdata = nk_handle_ptr(0); glfw.last_button_click = 0; {struct nk_glfw_device *dev = &glfw.ogl; dev->max_vertex_buffer = max_vertex_buffer; dev->max_element_buffer = max_element_buffer; nk_glfw3_device_create();} glfw.is_double_click_down = nk_false; glfw.double_click_pos = nk_vec2(0, 0); return &glfw.ctx; } NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&glfw.atlas); nk_font_atlas_begin(&glfw.atlas); *atlas = &glfw.atlas; } NK_API void nk_glfw3_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_glfw3_device_upload_atlas(image, w, h); nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex_index), &glfw.ogl.null); if (glfw.atlas.default_font) nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle); } NK_API void nk_glfw3_new_frame(void) { int i; double x, y; struct nk_context *ctx = &glfw.ctx; struct GLFWwindow *win = glfw.win; glfwGetWindowSize(win, &glfw.width, &glfw.height); glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height); glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width; glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height; nk_input_begin(ctx); for (i = 0; i < glfw.text_len; ++i) nk_input_unicode(ctx, glfw.text[i]); #ifdef NK_GLFW_GL4_MOUSE_GRABBING /* optional grabbing behavior */ if (ctx->input.mouse.grab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); else if (ctx->input.mouse.ungrab) glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL); #endif nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS|| glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); } else { nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_COPY, 0); nk_input_key(ctx, NK_KEY_PASTE, 0); nk_input_key(ctx, NK_KEY_CUT, 0); nk_input_key(ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(ctx, (int)x, (int)y); #ifdef NK_GLFW_GL4_MOUSE_GRABBING if (ctx->input.mouse.grabbed) { glfwSetCursorPos(glfw.win, ctx->input.mouse.prev.x, ctx->input.mouse.prev.y); ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; } #endif nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down); nk_input_scroll(ctx, glfw.scroll); nk_input_end(&glfw.ctx); glfw.text_len = 0; glfw.scroll = nk_vec2(0,0); } NK_API void nk_glfw3_shutdown(void) { nk_font_atlas_clear(&glfw.atlas); nk_free(&glfw.ctx); nk_glfw3_device_destroy(); memset(&glfw, 0, sizeof(glfw)); } #endif ================================================ FILE: demo/node_editor.c ================================================ /* nuklear - v1.00 - public domain */ /* This is a simple node editor just to show a simple implementation and that * it is possible to achieve it with this library. While all nodes inside this * example use a simple color modifier as content you could change them * to have your custom content depending on the node time. * Biggest difference to most usual implementation is that this example does * not have connectors on the right position of the property that it links. * This is mainly done out of laziness and could be implemented as well but * requires calculating the position of all rows and add connectors. * In addition adding and removing nodes is quite limited at the * moment since it is based on a simple fixed array. If this is to be converted * into something more serious it is probably best to extend it.*/ struct node { int ID; char name[32]; struct nk_rect bounds; float value; struct nk_color color; int input_count; int output_count; struct node *next; struct node *prev; }; struct node_link { int input_id; int input_slot; int output_id; int output_slot; struct nk_vec2 in; struct nk_vec2 out; }; struct node_linking { int active; struct node *node; int input_id; int input_slot; }; struct node_editor { int initialized; struct node node_buf[32]; struct node_link links[64]; struct node *begin; struct node *end; int node_count; int link_count; struct nk_rect bounds; struct node *selected; int show_grid; struct nk_vec2 scrolling; struct node_linking linking; }; static struct node_editor nodeEditor; static void node_editor_push(struct node_editor *editor, struct node *node) { if (!editor->begin) { node->next = NULL; node->prev = NULL; editor->begin = node; editor->end = node; } else { node->prev = editor->end; if (editor->end) editor->end->next = node; node->next = NULL; editor->end = node; } } static void node_editor_pop(struct node_editor *editor, struct node *node) { if (node->next) node->next->prev = node->prev; if (node->prev) node->prev->next = node->next; if (editor->end == node) editor->end = node->prev; if (editor->begin == node) editor->begin = node->next; node->next = NULL; node->prev = NULL; } static struct node* node_editor_find(struct node_editor *editor, int ID) { struct node *iter = editor->begin; while (iter) { if (iter->ID == ID) return iter; iter = iter->next; } return NULL; } static void node_editor_add(struct node_editor *editor, const char *name, struct nk_rect bounds, struct nk_color col, int in_count, int out_count) { static int IDs = 0; struct node *node; NK_ASSERT((nk_size)editor->node_count < NK_LEN(editor->node_buf)); node = &editor->node_buf[editor->node_count++]; node->ID = IDs++; node->value = 0; node->color = nk_rgb(255, 0, 0); node->input_count = in_count; node->output_count = out_count; node->color = col; node->bounds = bounds; strcpy(node->name, name); node_editor_push(editor, node); } static void node_editor_link(struct node_editor *editor, int in_id, int in_slot, int out_id, int out_slot) { struct node_link *link; NK_ASSERT((nk_size)editor->link_count < NK_LEN(editor->links)); link = &editor->links[editor->link_count++]; link->input_id = in_id; link->input_slot = in_slot; link->output_id = out_id; link->output_slot = out_slot; } static void node_editor_init(struct node_editor *editor) { memset(editor, 0, sizeof(*editor)); editor->begin = NULL; editor->end = NULL; node_editor_add(editor, "Source", nk_rect(40, 10, 180, 220), nk_rgb(255, 0, 0), 0, 1); node_editor_add(editor, "Source", nk_rect(40, 260, 180, 220), nk_rgb(0, 255, 0), 0, 1); node_editor_add(editor, "Combine", nk_rect(400, 100, 180, 220), nk_rgb(0,0,255), 2, 2); node_editor_link(editor, 0, 0, 2, 0); node_editor_link(editor, 1, 0, 2, 1); editor->show_grid = nk_true; } static int node_editor(struct nk_context *ctx) { int n = 0; struct nk_rect total_space; const struct nk_input *in = &ctx->input; struct nk_command_buffer *canvas; struct node *updated = 0; struct node_editor *nodedit = &nodeEditor; if (!nodeEditor.initialized) { node_editor_init(&nodeEditor); nodeEditor.initialized = 1; } if (nk_begin(ctx, "NodeEdit", nk_rect(0, 0, 800, 600), NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) { /* allocate complete window space */ canvas = nk_window_get_canvas(ctx); total_space = nk_window_get_content_region(ctx); nk_layout_space_begin(ctx, NK_STATIC, total_space.h, nodedit->node_count); { struct node *it = nodedit->begin; struct nk_rect size = nk_layout_space_bounds(ctx); struct nk_panel *node = 0; if (nodedit->show_grid) { /* display grid */ float x, y; const float grid_size = 32.0f; const struct nk_color grid_color = nk_rgb(50, 50, 50); for (x = (float)fmod(size.x - nodedit->scrolling.x, grid_size); x < size.w; x += grid_size) nk_stroke_line(canvas, x+size.x, size.y, x+size.x, size.y+size.h, 1.0f, grid_color); for (y = (float)fmod(size.y - nodedit->scrolling.y, grid_size); y < size.h; y += grid_size) nk_stroke_line(canvas, size.x, y+size.y, size.x+size.w, y+size.y, 1.0f, grid_color); } /* execute each node as a movable group */ while (it) { /* calculate scrolled node window position and size */ nk_layout_space_push(ctx, nk_rect(it->bounds.x - nodedit->scrolling.x, it->bounds.y - nodedit->scrolling.y, it->bounds.w, it->bounds.h)); /* execute node window */ if (nk_group_begin(ctx, it->name, NK_WINDOW_MOVABLE|NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER|NK_WINDOW_TITLE)) { /* always have last selected node on top */ node = nk_window_get_panel(ctx); if (nk_input_mouse_clicked(in, NK_BUTTON_LEFT, node->bounds) && (!(it->prev && nk_input_mouse_clicked(in, NK_BUTTON_LEFT, nk_layout_space_rect_to_screen(ctx, node->bounds)))) && nodedit->end != it) { updated = it; } /* ================= NODE CONTENT =====================*/ nk_layout_row_dynamic(ctx, 25, 1); nk_button_color(ctx, it->color); it->color.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, it->color.r, 255, 1,1); it->color.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, it->color.g, 255, 1,1); it->color.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, it->color.b, 255, 1,1); it->color.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, it->color.a, 255, 1,1); /* ====================================================*/ nk_group_end(ctx); } { /* node connector and linking */ float space; struct nk_rect bounds; bounds = nk_layout_space_rect_to_local(ctx, node->bounds); bounds.x += nodedit->scrolling.x; bounds.y += nodedit->scrolling.y; it->bounds = bounds; /* output connector */ space = node->bounds.h / (float)((it->output_count) + 1); for (n = 0; n < it->output_count; ++n) { struct nk_rect circle; circle.x = node->bounds.x + node->bounds.w-4; circle.y = node->bounds.y + space * (float)(n+1); circle.w = 8; circle.h = 8; nk_fill_circle(canvas, circle, nk_rgb(100, 100, 100)); /* start linking process */ if (nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, circle, nk_true)) { nodedit->linking.active = nk_true; nodedit->linking.node = it; nodedit->linking.input_id = it->ID; nodedit->linking.input_slot = n; } /* draw curve from linked node slot to mouse position */ if (nodedit->linking.active && nodedit->linking.node == it && nodedit->linking.input_slot == n) { struct nk_vec2 l0 = nk_vec2(circle.x + 3, circle.y + 3); struct nk_vec2 l1 = in->mouse.pos; nk_stroke_curve(canvas, l0.x, l0.y, l0.x + 50.0f, l0.y, l1.x - 50.0f, l1.y, l1.x, l1.y, 1.0f, nk_rgb(100, 100, 100)); } } /* input connector */ space = node->bounds.h / (float)((it->input_count) + 1); for (n = 0; n < it->input_count; ++n) { struct nk_rect circle; circle.x = node->bounds.x-4; circle.y = node->bounds.y + space * (float)(n+1); circle.w = 8; circle.h = 8; nk_fill_circle(canvas, circle, nk_rgb(100, 100, 100)); if (nk_input_is_mouse_released(in, NK_BUTTON_LEFT) && nk_input_is_mouse_hovering_rect(in, circle) && nodedit->linking.active && nodedit->linking.node != it) { nodedit->linking.active = nk_false; node_editor_link(nodedit, nodedit->linking.input_id, nodedit->linking.input_slot, it->ID, n); } } } it = it->next; } /* reset linking connection */ if (nodedit->linking.active && nk_input_is_mouse_released(in, NK_BUTTON_LEFT)) { nodedit->linking.active = nk_false; nodedit->linking.node = NULL; fprintf(stdout, "linking failed\n"); } /* draw each link */ for (n = 0; n < nodedit->link_count; ++n) { struct node_link *link = &nodedit->links[n]; struct node *ni = node_editor_find(nodedit, link->input_id); struct node *no = node_editor_find(nodedit, link->output_id); float spacei = node->bounds.h / (float)((ni->output_count) + 1); float spaceo = node->bounds.h / (float)((no->input_count) + 1); struct nk_vec2 l0 = nk_layout_space_to_screen(ctx, nk_vec2(ni->bounds.x + ni->bounds.w, 3.0f + ni->bounds.y + spacei * (float)(link->input_slot+1))); struct nk_vec2 l1 = nk_layout_space_to_screen(ctx, nk_vec2(no->bounds.x, 3.0f + no->bounds.y + spaceo * (float)(link->output_slot+1))); l0.x -= nodedit->scrolling.x; l0.y -= nodedit->scrolling.y; l1.x -= nodedit->scrolling.x; l1.y -= nodedit->scrolling.y; nk_stroke_curve(canvas, l0.x, l0.y, l0.x + 50.0f, l0.y, l1.x - 50.0f, l1.y, l1.x, l1.y, 1.0f, nk_rgb(100, 100, 100)); } if (updated) { /* reshuffle nodes to have least recently selected node on top */ node_editor_pop(nodedit, updated); node_editor_push(nodedit, updated); } /* node selection */ if (nk_input_mouse_clicked(in, NK_BUTTON_LEFT, nk_layout_space_bounds(ctx))) { it = nodedit->begin; nodedit->selected = NULL; nodedit->bounds = nk_rect(in->mouse.pos.x, in->mouse.pos.y, 100, 200); while (it) { struct nk_rect b = nk_layout_space_rect_to_screen(ctx, it->bounds); b.x -= nodedit->scrolling.x; b.y -= nodedit->scrolling.y; if (nk_input_is_mouse_hovering_rect(in, b)) nodedit->selected = it; it = it->next; } } /* contextual menu */ if (nk_contextual_begin(ctx, 0, nk_vec2(100, 220), nk_window_get_bounds(ctx))) { const char *grid_option[] = {"Show Grid", "Hide Grid"}; nk_layout_row_dynamic(ctx, 25, 1); if (nk_contextual_item_label(ctx, "New", NK_TEXT_CENTERED)) node_editor_add(nodedit, "New", nk_rect(400, 260, 180, 220), nk_rgb(255, 255, 255), 1, 2); if (nk_contextual_item_label(ctx, grid_option[nodedit->show_grid],NK_TEXT_CENTERED)) nodedit->show_grid = !nodedit->show_grid; nk_contextual_end(ctx); } } nk_layout_space_end(ctx); /* window content scrolling */ if (nk_input_is_mouse_hovering_rect(in, nk_window_get_bounds(ctx)) && nk_input_is_mouse_down(in, NK_BUTTON_MIDDLE)) { nodedit->scrolling.x += in->mouse.delta.x; nodedit->scrolling.y += in->mouse.delta.y; } } nk_end(ctx); return !nk_window_is_closed(ctx, "NodeEdit"); } ================================================ FILE: demo/overview.c ================================================ static int overview(struct nk_context *ctx) { /* window flags */ static int show_menu = nk_true; static int titlebar = nk_true; static int border = nk_true; static int resize = nk_true; static int movable = nk_true; static int no_scrollbar = nk_false; static int scale_left = nk_false; static nk_flags window_flags = 0; static int minimizable = nk_true; /* popups */ static enum nk_style_header_align header_align = NK_HEADER_RIGHT; static int show_app_about = nk_false; /* window flags */ window_flags = 0; ctx->style.window.header.align = header_align; if (border) window_flags |= NK_WINDOW_BORDER; if (resize) window_flags |= NK_WINDOW_SCALABLE; if (movable) window_flags |= NK_WINDOW_MOVABLE; if (no_scrollbar) window_flags |= NK_WINDOW_NO_SCROLLBAR; if (scale_left) window_flags |= NK_WINDOW_SCALE_LEFT; if (minimizable) window_flags |= NK_WINDOW_MINIMIZABLE; if (nk_begin(ctx, "Overview", nk_rect(10, 10, 400, 600), window_flags)) { if (show_menu) { /* menubar */ enum menu_states {MENU_DEFAULT, MENU_WINDOWS}; static nk_size mprog = 60; static int mslider = 10; static int mcheck = nk_true; nk_menubar_begin(ctx); /* menu #1 */ nk_layout_row_begin(ctx, NK_STATIC, 25, 5); nk_layout_row_push(ctx, 45); if (nk_menu_begin_label(ctx, "MENU", NK_TEXT_LEFT, nk_vec2(120, 200))) { static size_t prog = 40; static int slider = 10; static int check = nk_true; nk_layout_row_dynamic(ctx, 25, 1); if (nk_menu_item_label(ctx, "Hide", NK_TEXT_LEFT)) show_menu = nk_false; if (nk_menu_item_label(ctx, "About", NK_TEXT_LEFT)) show_app_about = nk_true; nk_progress(ctx, &prog, 100, NK_MODIFIABLE); nk_slider_int(ctx, 0, &slider, 16, 1); nk_checkbox_label(ctx, "check", &check); nk_menu_end(ctx); } /* menu #2 */ nk_layout_row_push(ctx, 60); if (nk_menu_begin_label(ctx, "ADVANCED", NK_TEXT_LEFT, nk_vec2(200, 600))) { enum menu_state {MENU_NONE,MENU_FILE, MENU_EDIT,MENU_VIEW,MENU_CHART}; static enum menu_state menu_state = MENU_NONE; enum nk_collapse_states state; state = (menu_state == MENU_FILE) ? NK_MAXIMIZED: NK_MINIMIZED; if (nk_tree_state_push(ctx, NK_TREE_TAB, "FILE", &state)) { menu_state = MENU_FILE; nk_menu_item_label(ctx, "New", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Open", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Save", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Close", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Exit", NK_TEXT_LEFT); nk_tree_pop(ctx); } else menu_state = (menu_state == MENU_FILE) ? MENU_NONE: menu_state; state = (menu_state == MENU_EDIT) ? NK_MAXIMIZED: NK_MINIMIZED; if (nk_tree_state_push(ctx, NK_TREE_TAB, "EDIT", &state)) { menu_state = MENU_EDIT; nk_menu_item_label(ctx, "Copy", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Delete", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Cut", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Paste", NK_TEXT_LEFT); nk_tree_pop(ctx); } else menu_state = (menu_state == MENU_EDIT) ? MENU_NONE: menu_state; state = (menu_state == MENU_VIEW) ? NK_MAXIMIZED: NK_MINIMIZED; if (nk_tree_state_push(ctx, NK_TREE_TAB, "VIEW", &state)) { menu_state = MENU_VIEW; nk_menu_item_label(ctx, "About", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Options", NK_TEXT_LEFT); nk_menu_item_label(ctx, "Customize", NK_TEXT_LEFT); nk_tree_pop(ctx); } else menu_state = (menu_state == MENU_VIEW) ? MENU_NONE: menu_state; state = (menu_state == MENU_CHART) ? NK_MAXIMIZED: NK_MINIMIZED; if (nk_tree_state_push(ctx, NK_TREE_TAB, "CHART", &state)) { size_t i = 0; const float values[]={26.0f,13.0f,30.0f,15.0f,25.0f,10.0f,20.0f,40.0f,12.0f,8.0f,22.0f,28.0f}; menu_state = MENU_CHART; nk_layout_row_dynamic(ctx, 150, 1); nk_chart_begin(ctx, NK_CHART_COLUMN, NK_LEN(values), 0, 50); for (i = 0; i < NK_LEN(values); ++i) nk_chart_push(ctx, values[i]); nk_chart_end(ctx); nk_tree_pop(ctx); } else menu_state = (menu_state == MENU_CHART) ? MENU_NONE: menu_state; nk_menu_end(ctx); } /* menu widgets */ nk_layout_row_push(ctx, 70); nk_progress(ctx, &mprog, 100, NK_MODIFIABLE); nk_slider_int(ctx, 0, &mslider, 16, 1); nk_checkbox_label(ctx, "check", &mcheck); nk_menubar_end(ctx); } if (show_app_about) { /* about popup */ static struct nk_rect s = {20, 100, 300, 190}; if (nk_popup_begin(ctx, NK_POPUP_STATIC, "About", NK_WINDOW_CLOSABLE, s)) { nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "Nuklear", NK_TEXT_LEFT); nk_label(ctx, "By Micha Mettke", NK_TEXT_LEFT); nk_label(ctx, "nuklear is licensed under the public domain License.", NK_TEXT_LEFT); nk_popup_end(ctx); } else show_app_about = nk_false; } /* window flags */ if (nk_tree_push(ctx, NK_TREE_TAB, "Window", NK_MINIMIZED)) { nk_layout_row_dynamic(ctx, 30, 2); nk_checkbox_label(ctx, "Titlebar", &titlebar); nk_checkbox_label(ctx, "Menu", &show_menu); nk_checkbox_label(ctx, "Border", &border); nk_checkbox_label(ctx, "Resizable", &resize); nk_checkbox_label(ctx, "Movable", &movable); nk_checkbox_label(ctx, "No Scrollbar", &no_scrollbar); nk_checkbox_label(ctx, "Minimizable", &minimizable); nk_checkbox_label(ctx, "Scale Left", &scale_left); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_TAB, "Widgets", NK_MINIMIZED)) { enum options {A,B,C}; static int checkbox; static int option; if (nk_tree_push(ctx, NK_TREE_NODE, "Text", NK_MINIMIZED)) { /* Text Widgets */ nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "Label aligned left", NK_TEXT_LEFT); nk_label(ctx, "Label aligned centered", NK_TEXT_CENTERED); nk_label(ctx, "Label aligned right", NK_TEXT_RIGHT); nk_label_colored(ctx, "Blue text", NK_TEXT_LEFT, nk_rgb(0,0,255)); nk_label_colored(ctx, "Yellow text", NK_TEXT_LEFT, nk_rgb(255,255,0)); nk_text(ctx, "Text without /0", 15, NK_TEXT_RIGHT); nk_layout_row_static(ctx, 100, 200, 1); nk_label_wrap(ctx, "This is a very long line to hopefully get this text to be wrapped into multiple lines to show line wrapping"); nk_layout_row_dynamic(ctx, 100, 1); nk_label_wrap(ctx, "This is another long text to show dynamic window changes on multiline text"); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Button", NK_MINIMIZED)) { /* Buttons Widgets */ nk_layout_row_static(ctx, 30, 100, 3); if (nk_button_label(ctx, "Button")) fprintf(stdout, "Button pressed!\n"); nk_button_set_behavior(ctx, NK_BUTTON_REPEATER); if (nk_button_label(ctx, "Repeater")) fprintf(stdout, "Repeater is being pressed!\n"); nk_button_set_behavior(ctx, NK_BUTTON_DEFAULT); nk_button_color(ctx, nk_rgb(0,0,255)); nk_layout_row_static(ctx, 25, 25, 8); nk_button_symbol(ctx, NK_SYMBOL_CIRCLE_SOLID); nk_button_symbol(ctx, NK_SYMBOL_CIRCLE_OUTLINE); nk_button_symbol(ctx, NK_SYMBOL_RECT_SOLID); nk_button_symbol(ctx, NK_SYMBOL_RECT_OUTLINE); nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_UP); nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_DOWN); nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_LEFT); nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_RIGHT); nk_layout_row_static(ctx, 30, 100, 2); nk_button_symbol_label(ctx, NK_SYMBOL_TRIANGLE_LEFT, "prev", NK_TEXT_RIGHT); nk_button_symbol_label(ctx, NK_SYMBOL_TRIANGLE_RIGHT, "next", NK_TEXT_LEFT); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Basic", NK_MINIMIZED)) { /* Basic widgets */ static int int_slider = 5; static float float_slider = 2.5f; static size_t prog_value = 40; static float property_float = 2; static int property_int = 10; static int property_neg = 10; static float range_float_min = 0; static float range_float_max = 100; static float range_float_value = 50; static int range_int_min = 0; static int range_int_value = 2048; static int range_int_max = 4096; static const float ratio[] = {120, 150}; nk_layout_row_static(ctx, 30, 100, 1); nk_checkbox_label(ctx, "Checkbox", &checkbox); nk_layout_row_static(ctx, 30, 80, 3); option = nk_option_label(ctx, "optionA", option == A) ? A : option; option = nk_option_label(ctx, "optionB", option == B) ? B : option; option = nk_option_label(ctx, "optionC", option == C) ? C : option; nk_layout_row(ctx, NK_STATIC, 30, 2, ratio); nk_labelf(ctx, NK_TEXT_LEFT, "Slider int"); nk_slider_int(ctx, 0, &int_slider, 10, 1); nk_label(ctx, "Slider float", NK_TEXT_LEFT); nk_slider_float(ctx, 0, &float_slider, 5.0, 0.5f); nk_labelf(ctx, NK_TEXT_LEFT, "Progressbar: %zu" , prog_value); nk_progress(ctx, &prog_value, 100, NK_MODIFIABLE); nk_layout_row(ctx, NK_STATIC, 25, 2, ratio); nk_label(ctx, "Property float:", NK_TEXT_LEFT); nk_property_float(ctx, "Float:", 0, &property_float, 64.0f, 0.1f, 0.2f); nk_label(ctx, "Property int:", NK_TEXT_LEFT); nk_property_int(ctx, "Int:", 0, &property_int, 100.0f, 1, 1); nk_label(ctx, "Property neg:", NK_TEXT_LEFT); nk_property_int(ctx, "Neg:", -10, &property_neg, 10, 1, 1); nk_layout_row_dynamic(ctx, 25, 1); nk_label(ctx, "Range:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 3); nk_property_float(ctx, "#min:", 0, &range_float_min, range_float_max, 1.0f, 0.2f); nk_property_float(ctx, "#float:", range_float_min, &range_float_value, range_float_max, 1.0f, 0.2f); nk_property_float(ctx, "#max:", range_float_min, &range_float_max, 100, 1.0f, 0.2f); nk_property_int(ctx, "#min:", INT_MIN, &range_int_min, range_int_max, 1, 10); nk_property_int(ctx, "#neg:", range_int_min, &range_int_value, range_int_max, 1, 10); nk_property_int(ctx, "#max:", range_int_min, &range_int_max, INT_MAX, 1, 10); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Inactive", NK_MINIMIZED)) { static int inactive = 1; nk_layout_row_dynamic(ctx, 30, 1); nk_checkbox_label(ctx, "Inactive", &inactive); nk_layout_row_static(ctx, 30, 80, 1); if (inactive) { struct nk_style_button button; button = ctx->style.button; ctx->style.button.normal = nk_style_item_color(nk_rgb(40,40,40)); ctx->style.button.hover = nk_style_item_color(nk_rgb(40,40,40)); ctx->style.button.active = nk_style_item_color(nk_rgb(40,40,40)); ctx->style.button.border_color = nk_rgb(60,60,60); ctx->style.button.text_background = nk_rgb(60,60,60); ctx->style.button.text_normal = nk_rgb(60,60,60); ctx->style.button.text_hover = nk_rgb(60,60,60); ctx->style.button.text_active = nk_rgb(60,60,60); nk_button_label(ctx, "button"); ctx->style.button = button; } else if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Selectable", NK_MINIMIZED)) { if (nk_tree_push(ctx, NK_TREE_NODE, "List", NK_MINIMIZED)) { static int selected[4] = {nk_false, nk_false, nk_true, nk_false}; nk_layout_row_static(ctx, 18, 100, 1); nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[0]); nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[1]); nk_label(ctx, "Not Selectable", NK_TEXT_LEFT); nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[2]); nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[3]); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Grid", NK_MINIMIZED)) { int i; static int selected[16] = {1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1}; nk_layout_row_static(ctx, 50, 50, 4); for (i = 0; i < 16; ++i) { if (nk_selectable_label(ctx, "Z", NK_TEXT_CENTERED, &selected[i])) { int x = (i % 4), y = i / 4; if (x > 0) selected[i - 1] ^= 1; if (x < 3) selected[i + 1] ^= 1; if (y > 0) selected[i - 4] ^= 1; if (y < 3) selected[i + 4] ^= 1; } } nk_tree_pop(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Combo", NK_MINIMIZED)) { /* Combobox Widgets * In this library comboboxes are not limited to being a popup * list of selectable text. Instead it is a abstract concept of * having something that is *selected* or displayed, a popup window * which opens if something needs to be modified and the content * of the popup which causes the *selected* or displayed value to * change or if wanted close the combobox. * * While strange at first handling comboboxes in a abstract way * solves the problem of overloaded window content. For example * changing a color value requires 4 value modifier (slider, property,...) * for RGBA then you need a label and ways to display the current color. * If you want to go fancy you even add rgb and hsv ratio boxes. * While fine for one color if you have a lot of them it because * tedious to look at and quite wasteful in space. You could add * a popup which modifies the color but this does not solve the * fact that it still requires a lot of cluttered space to do. * * In these kind of instance abstract comboboxes are quite handy. All * value modifiers are hidden inside the combobox popup and only * the color is shown if not open. This combines the clarity of the * popup with the ease of use of just using the space for modifiers. * * Other instances are for example time and especially date picker, * which only show the currently activated time/data and hide the * selection logic inside the combobox popup. */ static float chart_selection = 8.0f; static int current_weapon = 0; static int check_values[5]; static float position[3]; static struct nk_color combo_color = {130, 50, 50, 255}; static struct nk_colorf combo_color2 = {0.509f, 0.705f, 0.2f, 1.0f}; static size_t prog_a = 20, prog_b = 40, prog_c = 10, prog_d = 90; static const char *weapons[] = {"Fist","Pistol","Shotgun","Plasma","BFG"}; char buffer[64]; size_t sum = 0; /* default combobox */ nk_layout_row_static(ctx, 25, 200, 1); current_weapon = nk_combo(ctx, weapons, NK_LEN(weapons), current_weapon, 25, nk_vec2(200,200)); /* slider color combobox */ if (nk_combo_begin_color(ctx, combo_color, nk_vec2(200,200))) { float ratios[] = {0.15f, 0.85f}; nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratios); nk_label(ctx, "R:", NK_TEXT_LEFT); combo_color.r = (nk_byte)nk_slide_int(ctx, 0, combo_color.r, 255, 5); nk_label(ctx, "G:", NK_TEXT_LEFT); combo_color.g = (nk_byte)nk_slide_int(ctx, 0, combo_color.g, 255, 5); nk_label(ctx, "B:", NK_TEXT_LEFT); combo_color.b = (nk_byte)nk_slide_int(ctx, 0, combo_color.b, 255, 5); nk_label(ctx, "A:", NK_TEXT_LEFT); combo_color.a = (nk_byte)nk_slide_int(ctx, 0, combo_color.a , 255, 5); nk_combo_end(ctx); } /* complex color combobox */ if (nk_combo_begin_color(ctx, nk_rgb_cf(combo_color2), nk_vec2(200,400))) { enum color_mode {COL_RGB, COL_HSV}; static int col_mode = COL_RGB; #ifndef DEMO_DO_NOT_USE_COLOR_PICKER nk_layout_row_dynamic(ctx, 120, 1); combo_color2 = nk_color_picker(ctx, combo_color2, NK_RGBA); #endif nk_layout_row_dynamic(ctx, 25, 2); col_mode = nk_option_label(ctx, "RGB", col_mode == COL_RGB) ? COL_RGB : col_mode; col_mode = nk_option_label(ctx, "HSV", col_mode == COL_HSV) ? COL_HSV : col_mode; nk_layout_row_dynamic(ctx, 25, 1); if (col_mode == COL_RGB) { combo_color2.r = nk_propertyf(ctx, "#R:", 0, combo_color2.r, 1.0f, 0.01f,0.005f); combo_color2.g = nk_propertyf(ctx, "#G:", 0, combo_color2.g, 1.0f, 0.01f,0.005f); combo_color2.b = nk_propertyf(ctx, "#B:", 0, combo_color2.b, 1.0f, 0.01f,0.005f); combo_color2.a = nk_propertyf(ctx, "#A:", 0, combo_color2.a, 1.0f, 0.01f,0.005f); } else { float hsva[4]; nk_colorf_hsva_fv(hsva, combo_color2); hsva[0] = nk_propertyf(ctx, "#H:", 0, hsva[0], 1.0f, 0.01f,0.05f); hsva[1] = nk_propertyf(ctx, "#S:", 0, hsva[1], 1.0f, 0.01f,0.05f); hsva[2] = nk_propertyf(ctx, "#V:", 0, hsva[2], 1.0f, 0.01f,0.05f); hsva[3] = nk_propertyf(ctx, "#A:", 0, hsva[3], 1.0f, 0.01f,0.05f); combo_color2 = nk_hsva_colorfv(hsva); } nk_combo_end(ctx); } /* progressbar combobox */ sum = prog_a + prog_b + prog_c + prog_d; sprintf(buffer, "%lu", sum); if (nk_combo_begin_label(ctx, buffer, nk_vec2(200,200))) { nk_layout_row_dynamic(ctx, 30, 1); nk_progress(ctx, &prog_a, 100, NK_MODIFIABLE); nk_progress(ctx, &prog_b, 100, NK_MODIFIABLE); nk_progress(ctx, &prog_c, 100, NK_MODIFIABLE); nk_progress(ctx, &prog_d, 100, NK_MODIFIABLE); nk_combo_end(ctx); } /* checkbox combobox */ sum = (size_t)(check_values[0] + check_values[1] + check_values[2] + check_values[3] + check_values[4]); sprintf(buffer, "%lu", sum); if (nk_combo_begin_label(ctx, buffer, nk_vec2(200,200))) { nk_layout_row_dynamic(ctx, 30, 1); nk_checkbox_label(ctx, weapons[0], &check_values[0]); nk_checkbox_label(ctx, weapons[1], &check_values[1]); nk_checkbox_label(ctx, weapons[2], &check_values[2]); nk_checkbox_label(ctx, weapons[3], &check_values[3]); nk_combo_end(ctx); } /* complex text combobox */ sprintf(buffer, "%.2f, %.2f, %.2f", position[0], position[1],position[2]); if (nk_combo_begin_label(ctx, buffer, nk_vec2(200,200))) { nk_layout_row_dynamic(ctx, 25, 1); nk_property_float(ctx, "#X:", -1024.0f, &position[0], 1024.0f, 1,0.5f); nk_property_float(ctx, "#Y:", -1024.0f, &position[1], 1024.0f, 1,0.5f); nk_property_float(ctx, "#Z:", -1024.0f, &position[2], 1024.0f, 1,0.5f); nk_combo_end(ctx); } /* chart combobox */ sprintf(buffer, "%.1f", chart_selection); if (nk_combo_begin_label(ctx, buffer, nk_vec2(200,250))) { size_t i = 0; static const float values[]={26.0f,13.0f,30.0f,15.0f,25.0f,10.0f,20.0f,40.0f, 12.0f, 8.0f, 22.0f, 28.0f, 5.0f}; nk_layout_row_dynamic(ctx, 150, 1); nk_chart_begin(ctx, NK_CHART_COLUMN, NK_LEN(values), 0, 50); for (i = 0; i < NK_LEN(values); ++i) { nk_flags res = nk_chart_push(ctx, values[i]); if (res & NK_CHART_CLICKED) { chart_selection = values[i]; nk_combo_close(ctx); } } nk_chart_end(ctx); nk_combo_end(ctx); } { static int time_selected = 0; static int date_selected = 0; static struct tm sel_time; static struct tm sel_date; if (!time_selected || !date_selected) { /* keep time and date updated if nothing is selected */ time_t cur_time = time(0); struct tm *n = localtime(&cur_time); if (!time_selected) memcpy(&sel_time, n, sizeof(struct tm)); if (!date_selected) memcpy(&sel_date, n, sizeof(struct tm)); } /* time combobox */ sprintf(buffer, "%02d:%02d:%02d", sel_time.tm_hour, sel_time.tm_min, sel_time.tm_sec); if (nk_combo_begin_label(ctx, buffer, nk_vec2(200,250))) { time_selected = 1; nk_layout_row_dynamic(ctx, 25, 1); sel_time.tm_sec = nk_propertyi(ctx, "#S:", 0, sel_time.tm_sec, 60, 1, 1); sel_time.tm_min = nk_propertyi(ctx, "#M:", 0, sel_time.tm_min, 60, 1, 1); sel_time.tm_hour = nk_propertyi(ctx, "#H:", 0, sel_time.tm_hour, 23, 1, 1); nk_combo_end(ctx); } /* date combobox */ sprintf(buffer, "%02d-%02d-%02d", sel_date.tm_mday, sel_date.tm_mon+1, sel_date.tm_year+1900); if (nk_combo_begin_label(ctx, buffer, nk_vec2(350,400))) { int i = 0; const char *month[] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; const char *week_days[] = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"}; const int month_days[] = {31,28,31,30,31,30,31,31,30,31,30,31}; int year = sel_date.tm_year+1900; int leap_year = (!(year % 4) && ((year % 100))) || !(year % 400); int days = (sel_date.tm_mon == 1) ? month_days[sel_date.tm_mon] + leap_year: month_days[sel_date.tm_mon]; /* header with month and year */ date_selected = 1; nk_layout_row_begin(ctx, NK_DYNAMIC, 20, 3); nk_layout_row_push(ctx, 0.05f); if (nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_LEFT)) { if (sel_date.tm_mon == 0) { sel_date.tm_mon = 11; sel_date.tm_year = NK_MAX(0, sel_date.tm_year-1); } else sel_date.tm_mon--; } nk_layout_row_push(ctx, 0.9f); sprintf(buffer, "%s %d", month[sel_date.tm_mon], year); nk_label(ctx, buffer, NK_TEXT_CENTERED); nk_layout_row_push(ctx, 0.05f); if (nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_RIGHT)) { if (sel_date.tm_mon == 11) { sel_date.tm_mon = 0; sel_date.tm_year++; } else sel_date.tm_mon++; } nk_layout_row_end(ctx); /* good old week day formula (double because precision) */ {int year_n = (sel_date.tm_mon < 2) ? year-1: year; int y = year_n % 100; int c = year_n / 100; int y4 = (int)((float)y / 4); int c4 = (int)((float)c / 4); int m = (int)(2.6 * (double)(((sel_date.tm_mon + 10) % 12) + 1) - 0.2); int week_day = (((1 + m + y + y4 + c4 - 2 * c) % 7) + 7) % 7; /* weekdays */ nk_layout_row_dynamic(ctx, 35, 7); for (i = 0; i < (int)NK_LEN(week_days); ++i) nk_label(ctx, week_days[i], NK_TEXT_CENTERED); /* days */ if (week_day > 0) nk_spacing(ctx, week_day); for (i = 1; i <= days; ++i) { sprintf(buffer, "%d", i); if (nk_button_label(ctx, buffer)) { sel_date.tm_mday = i; nk_combo_close(ctx); } }} nk_combo_end(ctx); } } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Input", NK_MINIMIZED)) { static const float ratio[] = {120, 150}; static char field_buffer[64]; static char text[9][64]; static int text_len[9]; static char box_buffer[512]; static int field_len; static int box_len; nk_flags active; nk_layout_row(ctx, NK_STATIC, 25, 2, ratio); nk_label(ctx, "Default:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[0], &text_len[0], 64, nk_filter_default); nk_label(ctx, "Int:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[1], &text_len[1], 64, nk_filter_decimal); nk_label(ctx, "Float:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[2], &text_len[2], 64, nk_filter_float); nk_label(ctx, "Hex:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[4], &text_len[4], 64, nk_filter_hex); nk_label(ctx, "Octal:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[5], &text_len[5], 64, nk_filter_oct); nk_label(ctx, "Binary:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_SIMPLE, text[6], &text_len[6], 64, nk_filter_binary); nk_label(ctx, "Password:", NK_TEXT_LEFT); { int i = 0; int old_len = text_len[8]; char buffer[64]; for (i = 0; i < text_len[8]; ++i) buffer[i] = '*'; nk_edit_string(ctx, NK_EDIT_FIELD, buffer, &text_len[8], 64, nk_filter_default); if (old_len < text_len[8]) memcpy(&text[8][old_len], &buffer[old_len], (nk_size)(text_len[8] - old_len)); } nk_label(ctx, "Field:", NK_TEXT_LEFT); nk_edit_string(ctx, NK_EDIT_FIELD, field_buffer, &field_len, 64, nk_filter_default); nk_label(ctx, "Box:", NK_TEXT_LEFT); nk_layout_row_static(ctx, 180, 278, 1); nk_edit_string(ctx, NK_EDIT_BOX, box_buffer, &box_len, 512, nk_filter_default); nk_layout_row(ctx, NK_STATIC, 25, 2, ratio); active = nk_edit_string(ctx, NK_EDIT_FIELD|NK_EDIT_SIG_ENTER, text[7], &text_len[7], 64, nk_filter_ascii); if (nk_button_label(ctx, "Submit") || (active & NK_EDIT_COMMITED)) { text[7][text_len[7]] = '\n'; text_len[7]++; memcpy(&box_buffer[box_len], &text[7], (nk_size)text_len[7]); box_len += text_len[7]; text_len[7] = 0; } nk_tree_pop(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_TAB, "Chart", NK_MINIMIZED)) { /* Chart Widgets * This library has two different rather simple charts. The line and the * column chart. Both provide a simple way of visualizing values and * have a retained mode and immediate mode API version. For the retain * mode version `nk_plot` and `nk_plot_function` you either provide * an array or a callback to call to handle drawing the graph. * For the immediate mode version you start by calling `nk_chart_begin` * and need to provide min and max values for scaling on the Y-axis. * and then call `nk_chart_push` to push values into the chart. * Finally `nk_chart_end` needs to be called to end the process. */ float id = 0; static int col_index = -1; static int line_index = -1; float step = (2*3.141592654f) / 32; int i; int index = -1; struct nk_rect bounds; /* line chart */ id = 0; index = -1; nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f)) { for (i = 0; i < 32; ++i) { nk_flags res = nk_chart_push(ctx, (float)cos(id)); if (res & NK_CHART_HOVERING) index = (int)i; if (res & NK_CHART_CLICKED) line_index = (int)i; id += step; } nk_chart_end(ctx); } if (index != -1) nk_tooltipf(ctx, "Value: %.2f", (float)cos((float)index*step)); if (line_index != -1) { nk_layout_row_dynamic(ctx, 20, 1); nk_labelf(ctx, NK_TEXT_LEFT, "Selected value: %.2f", (float)cos((float)index*step)); } /* column chart */ nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin(ctx, NK_CHART_COLUMN, 32, 0.0f, 1.0f)) { for (i = 0; i < 32; ++i) { nk_flags res = nk_chart_push(ctx, (float)fabs(sin(id))); if (res & NK_CHART_HOVERING) index = (int)i; if (res & NK_CHART_CLICKED) col_index = (int)i; id += step; } nk_chart_end(ctx); } if (index != -1) nk_tooltipf(ctx, "Value: %.2f", (float)fabs(sin(step * (float)index))); if (col_index != -1) { nk_layout_row_dynamic(ctx, 20, 1); nk_labelf(ctx, NK_TEXT_LEFT, "Selected value: %.2f", (float)fabs(sin(step * (float)col_index))); } /* mixed chart */ nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin(ctx, NK_CHART_COLUMN, 32, 0.0f, 1.0f)) { nk_chart_add_slot(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f); nk_chart_add_slot(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f); for (id = 0, i = 0; i < 32; ++i) { nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0); nk_chart_push_slot(ctx, (float)cos(id), 1); nk_chart_push_slot(ctx, (float)sin(id), 2); id += step; } } nk_chart_end(ctx); /* mixed colored chart */ nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255,0,0), nk_rgb(150,0,0), 32, 0.0f, 1.0f)) { nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0,0,255), nk_rgb(0,0,150),32, -1.0f, 1.0f); nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0,255,0), nk_rgb(0,150,0), 32, -1.0f, 1.0f); for (id = 0, i = 0; i < 32; ++i) { nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0); nk_chart_push_slot(ctx, (float)cos(id), 1); nk_chart_push_slot(ctx, (float)sin(id), 2); id += step; } } nk_chart_end(ctx); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_TAB, "Popup", NK_MINIMIZED)) { static struct nk_color color = {255,0,0, 255}; static int select[4]; static int popup_active; const struct nk_input *in = &ctx->input; struct nk_rect bounds; /* menu contextual */ nk_layout_row_static(ctx, 30, 160, 1); bounds = nk_widget_bounds(ctx); nk_label(ctx, "Right click me for menu", NK_TEXT_LEFT); if (nk_contextual_begin(ctx, 0, nk_vec2(100, 300), bounds)) { static size_t prog = 40; static int slider = 10; nk_layout_row_dynamic(ctx, 25, 1); nk_checkbox_label(ctx, "Menu", &show_menu); nk_progress(ctx, &prog, 100, NK_MODIFIABLE); nk_slider_int(ctx, 0, &slider, 16, 1); if (nk_contextual_item_label(ctx, "About", NK_TEXT_CENTERED)) show_app_about = nk_true; nk_selectable_label(ctx, select[0]?"Unselect":"Select", NK_TEXT_LEFT, &select[0]); nk_selectable_label(ctx, select[1]?"Unselect":"Select", NK_TEXT_LEFT, &select[1]); nk_selectable_label(ctx, select[2]?"Unselect":"Select", NK_TEXT_LEFT, &select[2]); nk_selectable_label(ctx, select[3]?"Unselect":"Select", NK_TEXT_LEFT, &select[3]); nk_contextual_end(ctx); } /* color contextual */ nk_layout_row_begin(ctx, NK_STATIC, 30, 2); nk_layout_row_push(ctx, 100); nk_label(ctx, "Right Click here:", NK_TEXT_LEFT); nk_layout_row_push(ctx, 50); bounds = nk_widget_bounds(ctx); nk_button_color(ctx, color); nk_layout_row_end(ctx); if (nk_contextual_begin(ctx, 0, nk_vec2(350, 60), bounds)) { nk_layout_row_dynamic(ctx, 30, 4); color.r = (nk_byte)nk_propertyi(ctx, "#r", 0, color.r, 255, 1, 1); color.g = (nk_byte)nk_propertyi(ctx, "#g", 0, color.g, 255, 1, 1); color.b = (nk_byte)nk_propertyi(ctx, "#b", 0, color.b, 255, 1, 1); color.a = (nk_byte)nk_propertyi(ctx, "#a", 0, color.a, 255, 1, 1); nk_contextual_end(ctx); } /* popup */ nk_layout_row_begin(ctx, NK_STATIC, 30, 2); nk_layout_row_push(ctx, 100); nk_label(ctx, "Popup:", NK_TEXT_LEFT); nk_layout_row_push(ctx, 50); if (nk_button_label(ctx, "Popup")) popup_active = 1; nk_layout_row_end(ctx); if (popup_active) { static struct nk_rect s = {20, 100, 220, 90}; if (nk_popup_begin(ctx, NK_POPUP_STATIC, "Error", 0, s)) { nk_layout_row_dynamic(ctx, 25, 1); nk_label(ctx, "A terrible error as occured", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 2); if (nk_button_label(ctx, "OK")) { popup_active = 0; nk_popup_close(ctx); } if (nk_button_label(ctx, "Cancel")) { popup_active = 0; nk_popup_close(ctx); } nk_popup_end(ctx); } else popup_active = nk_false; } /* tooltip */ nk_layout_row_static(ctx, 30, 150, 1); bounds = nk_widget_bounds(ctx); nk_label(ctx, "Hover me for tooltip", NK_TEXT_LEFT); if (nk_input_is_mouse_hovering_rect(in, bounds)) nk_tooltip(ctx, "This is a tooltip"); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_TAB, "Layout", NK_MINIMIZED)) { if (nk_tree_push(ctx, NK_TREE_NODE, "Widget", NK_MINIMIZED)) { float ratio_two[] = {0.2f, 0.6f, 0.2f}; float width_two[] = {100, 200, 50}; nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Dynamic fixed column layout with generated position and size:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 30, 3); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "static fixed column layout with generated position and size:", NK_TEXT_LEFT); nk_layout_row_static(ctx, 30, 100, 3); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Dynamic array-based custom column layout with generated position and custom size:",NK_TEXT_LEFT); nk_layout_row(ctx, NK_DYNAMIC, 30, 3, ratio_two); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Static array-based custom column layout with generated position and custom size:",NK_TEXT_LEFT ); nk_layout_row(ctx, NK_STATIC, 30, 3, width_two); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Dynamic immediate mode custom column layout with generated position and custom size:",NK_TEXT_LEFT); nk_layout_row_begin(ctx, NK_DYNAMIC, 30, 3); nk_layout_row_push(ctx, 0.2f); nk_button_label(ctx, "button"); nk_layout_row_push(ctx, 0.6f); nk_button_label(ctx, "button"); nk_layout_row_push(ctx, 0.2f); nk_button_label(ctx, "button"); nk_layout_row_end(ctx); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Static immediate mode custom column layout with generated position and custom size:", NK_TEXT_LEFT); nk_layout_row_begin(ctx, NK_STATIC, 30, 3); nk_layout_row_push(ctx, 100); nk_button_label(ctx, "button"); nk_layout_row_push(ctx, 200); nk_button_label(ctx, "button"); nk_layout_row_push(ctx, 50); nk_button_label(ctx, "button"); nk_layout_row_end(ctx); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Static free space with custom position and custom size:", NK_TEXT_LEFT); nk_layout_space_begin(ctx, NK_STATIC, 60, 4); nk_layout_space_push(ctx, nk_rect(100, 0, 100, 30)); nk_button_label(ctx, "button"); nk_layout_space_push(ctx, nk_rect(0, 15, 100, 30)); nk_button_label(ctx, "button"); nk_layout_space_push(ctx, nk_rect(200, 15, 100, 30)); nk_button_label(ctx, "button"); nk_layout_space_push(ctx, nk_rect(100, 30, 100, 30)); nk_button_label(ctx, "button"); nk_layout_space_end(ctx); nk_layout_row_dynamic(ctx, 30, 1); nk_label(ctx, "Row template:", NK_TEXT_LEFT); nk_layout_row_template_begin(ctx, 30); nk_layout_row_template_push_dynamic(ctx); nk_layout_row_template_push_variable(ctx, 80); nk_layout_row_template_push_static(ctx, 80); nk_layout_row_template_end(ctx); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_button_label(ctx, "button"); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Group", NK_MINIMIZED)) { static int group_titlebar = nk_false; static int group_border = nk_true; static int group_no_scrollbar = nk_false; static int group_width = 320; static int group_height = 200; nk_flags group_flags = 0; if (group_border) group_flags |= NK_WINDOW_BORDER; if (group_no_scrollbar) group_flags |= NK_WINDOW_NO_SCROLLBAR; if (group_titlebar) group_flags |= NK_WINDOW_TITLE; nk_layout_row_dynamic(ctx, 30, 3); nk_checkbox_label(ctx, "Titlebar", &group_titlebar); nk_checkbox_label(ctx, "Border", &group_border); nk_checkbox_label(ctx, "No Scrollbar", &group_no_scrollbar); nk_layout_row_begin(ctx, NK_STATIC, 22, 3); nk_layout_row_push(ctx, 50); nk_label(ctx, "size:", NK_TEXT_LEFT); nk_layout_row_push(ctx, 130); nk_property_int(ctx, "#Width:", 100, &group_width, 500, 10, 1); nk_layout_row_push(ctx, 130); nk_property_int(ctx, "#Height:", 100, &group_height, 500, 10, 1); nk_layout_row_end(ctx); nk_layout_row_static(ctx, (float)group_height, group_width, 2); if (nk_group_begin(ctx, "Group", group_flags)) { int i = 0; static int selected[16]; nk_layout_row_static(ctx, 18, 100, 1); for (i = 0; i < 16; ++i) nk_selectable_label(ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_CENTERED, &selected[i]); nk_group_end(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Tree", NK_MINIMIZED)) { static int root_selected = 0; int sel = root_selected; if (nk_tree_element_push(ctx, NK_TREE_NODE, "Root", NK_MINIMIZED, &sel)) { static int selected[8]; int i = 0, node_select = selected[0]; if (sel != root_selected) { root_selected = sel; for (i = 0; i < 8; ++i) selected[i] = sel; } if (nk_tree_element_push(ctx, NK_TREE_NODE, "Node", NK_MINIMIZED, &node_select)) { int j = 0; static int sel_nodes[4]; if (node_select != selected[0]) { selected[0] = node_select; for (i = 0; i < 4; ++i) sel_nodes[i] = node_select; } nk_layout_row_static(ctx, 18, 100, 1); for (j = 0; j < 4; ++j) nk_selectable_symbol_label(ctx, NK_SYMBOL_CIRCLE_SOLID, (sel_nodes[j]) ? "Selected": "Unselected", NK_TEXT_RIGHT, &sel_nodes[j]); nk_tree_element_pop(ctx); } nk_layout_row_static(ctx, 18, 100, 1); for (i = 1; i < 8; ++i) nk_selectable_symbol_label(ctx, NK_SYMBOL_CIRCLE_SOLID, (selected[i]) ? "Selected": "Unselected", NK_TEXT_RIGHT, &selected[i]); nk_tree_element_pop(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Notebook", NK_MINIMIZED)) { static int current_tab = 0; struct nk_rect bounds; float step = (2*3.141592654f) / 32; enum chart_type {CHART_LINE, CHART_HISTO, CHART_MIXED}; const char *names[] = {"Lines", "Columns", "Mixed"}; float id = 0; int i; /* Header */ nk_style_push_vec2(ctx, &ctx->style.window.spacing, nk_vec2(0,0)); nk_style_push_float(ctx, &ctx->style.button.rounding, 0); nk_layout_row_begin(ctx, NK_STATIC, 20, 3); for (i = 0; i < 3; ++i) { /* make sure button perfectly fits text */ const struct nk_user_font *f = ctx->style.font; float text_width = f->width(f->userdata, f->height, names[i], nk_strlen(names[i])); float widget_width = text_width + 3 * ctx->style.button.padding.x; nk_layout_row_push(ctx, widget_width); if (current_tab == i) { /* active tab gets highlighted */ struct nk_style_item button_color = ctx->style.button.normal; ctx->style.button.normal = ctx->style.button.active; current_tab = nk_button_label(ctx, names[i]) ? i: current_tab; ctx->style.button.normal = button_color; } else current_tab = nk_button_label(ctx, names[i]) ? i: current_tab; } nk_style_pop_float(ctx); /* Body */ nk_layout_row_dynamic(ctx, 140, 1); if (nk_group_begin(ctx, "Notebook", NK_WINDOW_BORDER)) { nk_style_pop_vec2(ctx); switch (current_tab) { default: break; case CHART_LINE: nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255,0,0), nk_rgb(150,0,0), 32, 0.0f, 1.0f)) { nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0,0,255), nk_rgb(0,0,150),32, -1.0f, 1.0f); for (i = 0, id = 0; i < 32; ++i) { nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0); nk_chart_push_slot(ctx, (float)cos(id), 1); id += step; } } nk_chart_end(ctx); break; case CHART_HISTO: nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin_colored(ctx, NK_CHART_COLUMN, nk_rgb(255,0,0), nk_rgb(150,0,0), 32, 0.0f, 1.0f)) { for (i = 0, id = 0; i < 32; ++i) { nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0); id += step; } } nk_chart_end(ctx); break; case CHART_MIXED: nk_layout_row_dynamic(ctx, 100, 1); bounds = nk_widget_bounds(ctx); if (nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255,0,0), nk_rgb(150,0,0), 32, 0.0f, 1.0f)) { nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0,0,255), nk_rgb(0,0,150),32, -1.0f, 1.0f); nk_chart_add_slot_colored(ctx, NK_CHART_COLUMN, nk_rgb(0,255,0), nk_rgb(0,150,0), 32, 0.0f, 1.0f); for (i = 0, id = 0; i < 32; ++i) { nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0); nk_chart_push_slot(ctx, (float)fabs(cos(id)), 1); nk_chart_push_slot(ctx, (float)fabs(sin(id)), 2); id += step; } } nk_chart_end(ctx); break; } nk_group_end(ctx); } else nk_style_pop_vec2(ctx); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Simple", NK_MINIMIZED)) { nk_layout_row_dynamic(ctx, 300, 2); if (nk_group_begin(ctx, "Group_Without_Border", 0)) { int i = 0; char buffer[64]; nk_layout_row_static(ctx, 18, 150, 1); for (i = 0; i < 64; ++i) { sprintf(buffer, "0x%02x", i); nk_labelf(ctx, NK_TEXT_LEFT, "%s: scrollable region", buffer); } nk_group_end(ctx); } if (nk_group_begin(ctx, "Group_With_Border", NK_WINDOW_BORDER)) { int i = 0; char buffer[64]; nk_layout_row_dynamic(ctx, 25, 2); for (i = 0; i < 64; ++i) { sprintf(buffer, "%08d", ((((i%7)*10)^32))+(64+(i%2)*2)); nk_button_label(ctx, buffer); } nk_group_end(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Complex", NK_MINIMIZED)) { int i; nk_layout_space_begin(ctx, NK_STATIC, 500, 64); nk_layout_space_push(ctx, nk_rect(0,0,150,500)); if (nk_group_begin(ctx, "Group_left", NK_WINDOW_BORDER)) { static int selected[32]; nk_layout_row_static(ctx, 18, 100, 1); for (i = 0; i < 32; ++i) nk_selectable_label(ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_CENTERED, &selected[i]); nk_group_end(ctx); } nk_layout_space_push(ctx, nk_rect(160,0,150,240)); if (nk_group_begin(ctx, "Group_top", NK_WINDOW_BORDER)) { nk_layout_row_dynamic(ctx, 25, 1); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } nk_layout_space_push(ctx, nk_rect(160,250,150,250)); if (nk_group_begin(ctx, "Group_buttom", NK_WINDOW_BORDER)) { nk_layout_row_dynamic(ctx, 25, 1); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } nk_layout_space_push(ctx, nk_rect(320,0,150,150)); if (nk_group_begin(ctx, "Group_right_top", NK_WINDOW_BORDER)) { static int selected[4]; nk_layout_row_static(ctx, 18, 100, 1); for (i = 0; i < 4; ++i) nk_selectable_label(ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_CENTERED, &selected[i]); nk_group_end(ctx); } nk_layout_space_push(ctx, nk_rect(320,160,150,150)); if (nk_group_begin(ctx, "Group_right_center", NK_WINDOW_BORDER)) { static int selected[4]; nk_layout_row_static(ctx, 18, 100, 1); for (i = 0; i < 4; ++i) nk_selectable_label(ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_CENTERED, &selected[i]); nk_group_end(ctx); } nk_layout_space_push(ctx, nk_rect(320,320,150,150)); if (nk_group_begin(ctx, "Group_right_bottom", NK_WINDOW_BORDER)) { static int selected[4]; nk_layout_row_static(ctx, 18, 100, 1); for (i = 0; i < 4; ++i) nk_selectable_label(ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_CENTERED, &selected[i]); nk_group_end(ctx); } nk_layout_space_end(ctx); nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Splitter", NK_MINIMIZED)) { const struct nk_input *in = &ctx->input; nk_layout_row_static(ctx, 20, 320, 1); nk_label(ctx, "Use slider and spinner to change tile size", NK_TEXT_LEFT); nk_label(ctx, "Drag the space between tiles to change tile ratio", NK_TEXT_LEFT); if (nk_tree_push(ctx, NK_TREE_NODE, "Vertical", NK_MINIMIZED)) { static float a = 100, b = 100, c = 100; struct nk_rect bounds; float row_layout[5]; row_layout[0] = a; row_layout[1] = 8; row_layout[2] = b; row_layout[3] = 8; row_layout[4] = c; /* header */ nk_layout_row_static(ctx, 30, 100, 2); nk_label(ctx, "left:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &a, 200.0f, 10.0f); nk_label(ctx, "middle:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &b, 200.0f, 10.0f); nk_label(ctx, "right:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &c, 200.0f, 10.0f); /* tiles */ nk_layout_row(ctx, NK_STATIC, 200, 5, row_layout); /* left space */ if (nk_group_begin(ctx, "left", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR)) { nk_layout_row_dynamic(ctx, 25, 1); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } /* scaler */ bounds = nk_widget_bounds(ctx); nk_spacing(ctx, 1); if ((nk_input_is_mouse_hovering_rect(in, bounds) || nk_input_is_mouse_prev_hovering_rect(in, bounds)) && nk_input_is_mouse_down(in, NK_BUTTON_LEFT)) { a = row_layout[0] + in->mouse.delta.x; b = row_layout[2] - in->mouse.delta.x; } /* middle space */ if (nk_group_begin(ctx, "center", NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR)) { nk_layout_row_dynamic(ctx, 25, 1); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } /* scaler */ bounds = nk_widget_bounds(ctx); nk_spacing(ctx, 1); if ((nk_input_is_mouse_hovering_rect(in, bounds) || nk_input_is_mouse_prev_hovering_rect(in, bounds)) && nk_input_is_mouse_down(in, NK_BUTTON_LEFT)) { b = (row_layout[2] + in->mouse.delta.x); c = (row_layout[4] - in->mouse.delta.x); } /* right space */ if (nk_group_begin(ctx, "right", NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR)) { nk_layout_row_dynamic(ctx, 25, 1); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } nk_tree_pop(ctx); } if (nk_tree_push(ctx, NK_TREE_NODE, "Horizontal", NK_MINIMIZED)) { static float a = 100, b = 100, c = 100; struct nk_rect bounds; /* header */ nk_layout_row_static(ctx, 30, 100, 2); nk_label(ctx, "top:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &a, 200.0f, 10.0f); nk_label(ctx, "middle:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &b, 200.0f, 10.0f); nk_label(ctx, "bottom:", NK_TEXT_LEFT); nk_slider_float(ctx, 10.0f, &c, 200.0f, 10.0f); /* top space */ nk_layout_row_dynamic(ctx, a, 1); if (nk_group_begin(ctx, "top", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER)) { nk_layout_row_dynamic(ctx, 25, 3); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } /* scaler */ nk_layout_row_dynamic(ctx, 8, 1); bounds = nk_widget_bounds(ctx); nk_spacing(ctx, 1); if ((nk_input_is_mouse_hovering_rect(in, bounds) || nk_input_is_mouse_prev_hovering_rect(in, bounds)) && nk_input_is_mouse_down(in, NK_BUTTON_LEFT)) { a = a + in->mouse.delta.y; b = b - in->mouse.delta.y; } /* middle space */ nk_layout_row_dynamic(ctx, b, 1); if (nk_group_begin(ctx, "middle", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER)) { nk_layout_row_dynamic(ctx, 25, 3); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } { /* scaler */ nk_layout_row_dynamic(ctx, 8, 1); bounds = nk_widget_bounds(ctx); if ((nk_input_is_mouse_hovering_rect(in, bounds) || nk_input_is_mouse_prev_hovering_rect(in, bounds)) && nk_input_is_mouse_down(in, NK_BUTTON_LEFT)) { b = b + in->mouse.delta.y; c = c - in->mouse.delta.y; } } /* bottom space */ nk_layout_row_dynamic(ctx, c, 1); if (nk_group_begin(ctx, "bottom", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER)) { nk_layout_row_dynamic(ctx, 25, 3); nk_button_label(ctx, "#FFAA"); nk_button_label(ctx, "#FFBB"); nk_button_label(ctx, "#FFCC"); nk_button_label(ctx, "#FFDD"); nk_button_label(ctx, "#FFEE"); nk_button_label(ctx, "#FFFF"); nk_group_end(ctx); } nk_tree_pop(ctx); } nk_tree_pop(ctx); } nk_tree_pop(ctx); } } nk_end(ctx); return !nk_window_is_closed(ctx, "Overview"); } ================================================ FILE: demo/sdl_opengl2/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = -lmingw32 -lSDL2main -lSDL2 -lopengl32 -lm -lGLU32 else UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = -lSDL2 -framework OpenGL -lm else LIBS = -lSDL2 -lGL -lm -lGLU endif endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/sdl_opengl2/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_SDL_GL2_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_sdl_gl2.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { /* Platform */ SDL_Window *win; SDL_GLContext glContext; int win_width, win_height; int running = 1; /* GUI */ struct nk_context *ctx; struct nk_colorf bg; /* SDL setup */ SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0"); SDL_Init(SDL_INIT_VIDEO); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24); SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2); win = SDL_CreateWindow("Demo", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI); glContext = SDL_GL_CreateContext(win); SDL_GetWindowSize(win, &win_width, &win_height); /* GUI */ ctx = nk_sdl_init(win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_sdl_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 16, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_sdl_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &roboto->handle)*/;} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ SDL_Event evt; nk_input_begin(ctx); while (SDL_PollEvent(&evt)) { if (evt.type == SDL_QUIT) goto cleanup; nk_sdl_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ SDL_GetWindowSize(win, &win_width, &win_height); glViewport(0, 0, win_width, win_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_sdl_render(NK_ANTI_ALIASING_ON); SDL_GL_SwapWindow(win); } cleanup: nk_sdl_shutdown(); SDL_GL_DeleteContext(glContext); SDL_DestroyWindow(win); SDL_Quit(); return 0; } ================================================ FILE: demo/sdl_opengl2/nuklear_sdl_gl2.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_SDL_GL2_H_ #define NK_SDL_GL2_H_ #include NK_API struct nk_context* nk_sdl_init(SDL_Window *win); NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_sdl_font_stash_end(void); NK_API int nk_sdl_handle_event(SDL_Event *evt); NK_API void nk_sdl_render(enum nk_anti_aliasing); NK_API void nk_sdl_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_SDL_GL2_IMPLEMENTATION struct nk_sdl_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint font_tex; }; struct nk_sdl_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_sdl { SDL_Window *win; struct nk_sdl_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; } sdl; NK_INTERN void nk_sdl_device_upload_atlas(const void *image, int width, int height) { struct nk_sdl_device *dev = &sdl.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_sdl_render(enum nk_anti_aliasing AA) { /* setup global state */ struct nk_sdl_device *dev = &sdl.ogl; int width, height; int display_width, display_height; struct nk_vec2 scale; SDL_GetWindowSize(sdl.win, &width, &height); SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height); scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glEnable(GL_BLEND); glEnable(GL_TEXTURE_2D); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); /* setup viewport/project */ glViewport(0,0,(GLsizei)display_width,(GLsizei)display_height); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_COLOR_ARRAY); { GLsizei vs = sizeof(struct nk_sdl_vertex); size_t vp = offsetof(struct nk_sdl_vertex, position); size_t vt = offsetof(struct nk_sdl_vertex, uv); size_t vc = offsetof(struct nk_sdl_vertex, col); /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; const nk_draw_index *offset = NULL; struct nk_buffer vbuf, ebuf; /* fill converting configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_sdl_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* convert shapes into vertexes */ nk_buffer_init_default(&vbuf); nk_buffer_init_default(&ebuf); nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config); /* setup vertex buffer pointer */ {const void *vertices = nk_buffer_memory_const(&vbuf); glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp)); glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt)); glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));} /* iterate over and execute each draw command */ offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf); nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&sdl.ctx); nk_buffer_free(&vbuf); nk_buffer_free(&ebuf); } /* default OpenGL state */ glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glDisable(GL_SCISSOR_TEST); glDisable(GL_BLEND); glDisable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, 0); glMatrixMode(GL_MODELVIEW); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); glPopAttrib(); } static void nk_sdl_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = SDL_GetClipboardText(); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } static void nk_sdl_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; SDL_SetClipboardText(str); free(str); } NK_API struct nk_context* nk_sdl_init(SDL_Window *win) { sdl.win = win; nk_init_default(&sdl.ctx, 0); sdl.ctx.clip.copy = nk_sdl_clipboard_copy; sdl.ctx.clip.paste = nk_sdl_clipboard_paste; sdl.ctx.clip.userdata = nk_handle_ptr(0); nk_buffer_init_default(&sdl.ogl.cmds); return &sdl.ctx; } NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&sdl.atlas); nk_font_atlas_begin(&sdl.atlas); *atlas = &sdl.atlas; } NK_API void nk_sdl_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_sdl_device_upload_atlas(image, w, h); nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null); if (sdl.atlas.default_font) nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle); } NK_API int nk_sdl_handle_event(SDL_Event *evt) { struct nk_context *ctx = &sdl.ctx; /* optional grabbing behavior */ if (ctx->input.mouse.grab) { SDL_SetRelativeMouseMode(SDL_TRUE); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y; SDL_SetRelativeMouseMode(SDL_FALSE); SDL_WarpMouseInWindow(sdl.win, x, y); ctx->input.mouse.ungrab = 0; } if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) { /* key events */ int down = evt->type == SDL_KEYDOWN; const Uint8* state = SDL_GetKeyboardState(0); SDL_Keycode sym = evt->key.keysym.sym; if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (sym == SDLK_DELETE) nk_input_key(ctx, NK_KEY_DEL, down); else if (sym == SDLK_RETURN) nk_input_key(ctx, NK_KEY_ENTER, down); else if (sym == SDLK_TAB) nk_input_key(ctx, NK_KEY_TAB, down); else if (sym == SDLK_BACKSPACE) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (sym == SDLK_HOME) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (sym == SDLK_END) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else if (sym == SDLK_PAGEDOWN) { nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); } else if (sym == SDLK_PAGEUP) { nk_input_key(ctx, NK_KEY_SCROLL_UP, down); } else if (sym == SDLK_z) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_r) nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_c) nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_v) nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_x) nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_b) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_e) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_UP) nk_input_key(ctx, NK_KEY_UP, down); else if (sym == SDLK_DOWN) nk_input_key(ctx, NK_KEY_DOWN, down); else if (sym == SDLK_LEFT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(ctx, NK_KEY_LEFT, down); } else if (sym == SDLK_RIGHT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(ctx, NK_KEY_RIGHT, down); } else return 0; return 1; } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) { /* mouse button */ int down = evt->type == SDL_MOUSEBUTTONDOWN; const int x = evt->button.x, y = evt->button.y; if (evt->button.button == SDL_BUTTON_LEFT) { if (evt->button.clicks > 1) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->button.button == SDL_BUTTON_MIDDLE) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->button.button == SDL_BUTTON_RIGHT) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); return 1; } else if (evt->type == SDL_MOUSEMOTION) { /* mouse motion */ if (ctx->input.mouse.grabbed) { int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y; nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel); } else nk_input_motion(ctx, evt->motion.x, evt->motion.y); return 1; } else if (evt->type == SDL_TEXTINPUT) { /* text input */ nk_glyph glyph; memcpy(glyph, evt->text.text, NK_UTF_SIZE); nk_input_glyph(ctx, glyph); return 1; } else if (evt->type == SDL_MOUSEWHEEL) { /* mouse wheel */ nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y)); return 1; } return 0; } NK_API void nk_sdl_shutdown(void) { struct nk_sdl_device *dev = &sdl.ogl; nk_font_atlas_clear(&sdl.atlas); nk_free(&sdl.ctx); glDeleteTextures(1, &dev->font_tex); nk_buffer_free(&dev->cmds); memset(&sdl, 0, sizeof(sdl)); } #endif ================================================ FILE: demo/sdl_opengl3/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = -lmingw32 -lSDL2main -lSDL2 -lopengl32 -lm -lGLU32 -lGLEW32 else UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = -lSDL2 -framework OpenGL -lm -lGLEW else LIBS = -lSDL2 -lGL -lm -lGLU -lGLEW endif endif $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) ================================================ FILE: demo/sdl_opengl3/main.c ================================================ /* nuklear - 1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_SDL_GL3_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_sdl_gl3.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { /* Platform */ SDL_Window *win; SDL_GLContext glContext; int win_width, win_height; int running = 1; /* GUI */ struct nk_context *ctx; struct nk_colorf bg; /* SDL setup */ SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0"); SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS); SDL_GL_SetAttribute (SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); win = SDL_CreateWindow("Demo", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI); glContext = SDL_GL_CreateContext(win); SDL_GetWindowSize(win, &win_width, &win_height); /* OpenGL setup */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } ctx = nk_sdl_init(win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_sdl_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 16, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_sdl_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &roboto->handle);*/} /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ SDL_Event evt; nk_input_begin(ctx); while (SDL_PollEvent(&evt)) { if (evt.type == SDL_QUIT) goto cleanup; nk_sdl_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) printf("button pressed!\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 22, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ SDL_GetWindowSize(win, &win_width, &win_height); glViewport(0, 0, win_width, win_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY); SDL_GL_SwapWindow(win); } cleanup: nk_sdl_shutdown(); SDL_GL_DeleteContext(glContext); SDL_DestroyWindow(win); SDL_Quit(); return 0; } ================================================ FILE: demo/sdl_opengl3/nuklear_sdl_gl3.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_SDL_GL3_H_ #define NK_SDL_GL3_H_ #include #include NK_API struct nk_context* nk_sdl_init(SDL_Window *win); NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_sdl_font_stash_end(void); NK_API int nk_sdl_handle_event(SDL_Event *evt); NK_API void nk_sdl_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer); NK_API void nk_sdl_shutdown(void); NK_API void nk_sdl_device_destroy(void); NK_API void nk_sdl_device_create(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_SDL_GL3_IMPLEMENTATION #include struct nk_sdl_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; struct nk_sdl_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_sdl { SDL_Window *win; struct nk_sdl_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; } sdl; #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif NK_API void nk_sdl_device_create(void) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; struct nk_sdl_device *dev = &sdl.ogl; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_sdl_vertex); size_t vp = offsetof(struct nk_sdl_vertex, position); size_t vt = offsetof(struct nk_sdl_vertex, uv); size_t vc = offsetof(struct nk_sdl_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } NK_INTERN void nk_sdl_device_upload_atlas(const void *image, int width, int height) { struct nk_sdl_device *dev = &sdl.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_sdl_device_destroy(void) { struct nk_sdl_device *dev = &sdl.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } NK_API void nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { struct nk_sdl_device *dev = &sdl.ogl; int width, height; int display_width, display_height; struct nk_vec2 scale; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; SDL_GetWindowSize(sdl.win, &width, &height); SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height); ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; /* setup global state */ glViewport(0,0,display_width,display_height); glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; struct nk_buffer vbuf, ebuf; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); /* load vertices/elements directly into vertex/element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_sdl_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer); nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config); } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor((GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&sdl.ctx); } glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } static void nk_sdl_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = SDL_GetClipboardText(); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } static void nk_sdl_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; SDL_SetClipboardText(str); free(str); } NK_API struct nk_context* nk_sdl_init(SDL_Window *win) { sdl.win = win; nk_init_default(&sdl.ctx, 0); sdl.ctx.clip.copy = nk_sdl_clipboard_copy; sdl.ctx.clip.paste = nk_sdl_clipboard_paste; sdl.ctx.clip.userdata = nk_handle_ptr(0); nk_sdl_device_create(); return &sdl.ctx; } NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&sdl.atlas); nk_font_atlas_begin(&sdl.atlas); *atlas = &sdl.atlas; } NK_API void nk_sdl_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_sdl_device_upload_atlas(image, w, h); nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null); if (sdl.atlas.default_font) nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle); } NK_API int nk_sdl_handle_event(SDL_Event *evt) { struct nk_context *ctx = &sdl.ctx; if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) { /* key events */ int down = evt->type == SDL_KEYDOWN; const Uint8* state = SDL_GetKeyboardState(0); SDL_Keycode sym = evt->key.keysym.sym; if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (sym == SDLK_DELETE) nk_input_key(ctx, NK_KEY_DEL, down); else if (sym == SDLK_RETURN) nk_input_key(ctx, NK_KEY_ENTER, down); else if (sym == SDLK_TAB) nk_input_key(ctx, NK_KEY_TAB, down); else if (sym == SDLK_BACKSPACE) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (sym == SDLK_HOME) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (sym == SDLK_END) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else if (sym == SDLK_PAGEDOWN) { nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); } else if (sym == SDLK_PAGEUP) { nk_input_key(ctx, NK_KEY_SCROLL_UP, down); } else if (sym == SDLK_z) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_r) nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_c) nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_v) nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_x) nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_b) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_e) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_UP) nk_input_key(ctx, NK_KEY_UP, down); else if (sym == SDLK_DOWN) nk_input_key(ctx, NK_KEY_DOWN, down); else if (sym == SDLK_LEFT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(ctx, NK_KEY_LEFT, down); } else if (sym == SDLK_RIGHT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(ctx, NK_KEY_RIGHT, down); } else return 0; return 1; } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) { /* mouse button */ int down = evt->type == SDL_MOUSEBUTTONDOWN; const int x = evt->button.x, y = evt->button.y; if (evt->button.button == SDL_BUTTON_LEFT) { if (evt->button.clicks > 1) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->button.button == SDL_BUTTON_MIDDLE) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->button.button == SDL_BUTTON_RIGHT) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); return 1; } else if (evt->type == SDL_MOUSEMOTION) { /* mouse motion */ if (ctx->input.mouse.grabbed) { int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y; nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel); } else nk_input_motion(ctx, evt->motion.x, evt->motion.y); return 1; } else if (evt->type == SDL_TEXTINPUT) { /* text input */ nk_glyph glyph; memcpy(glyph, evt->text.text, NK_UTF_SIZE); nk_input_glyph(ctx, glyph); return 1; } else if (evt->type == SDL_MOUSEWHEEL) { /* mouse wheel */ nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y)); return 1; } return 0; } NK_API void nk_sdl_shutdown(void) { nk_font_atlas_clear(&sdl.atlas); nk_free(&sdl.ctx); nk_sdl_device_destroy(); memset(&sdl, 0, sizeof(sdl)); } #endif ================================================ FILE: demo/sdl_opengles2/Makefile ================================================ # Install BIN = demo # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = -lSDL2 -framework OpenGLES -lm else LIBS = -lSDL2 -lGLESv2 -lm endif $(BIN): prepare $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS) web: prepare emcc $(SRC) -Os -s USE_SDL=2 -o bin/index.html rpi: prepare $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) `PKG_CONFIG_PATH=/opt/vc/lib/pkgconfig/ pkg-config --cflags --libs bcm_host brcmglesv2` `/usr/local/bin/sdl2-config --libs --cflags` prepare: @mkdir -p bin rm -f bin/$(BIN) $(OBJS) ================================================ FILE: demo/sdl_opengles2/Readme.md ================================================ OpenGL ES ========= OpenGL ES (OpenGL for Embedded Systems) it is a subset of OpenGL aimed to be simple and fast. It is designed for embedded systems, so for example, this demo could be a good point to start an Android application. Linux, Mac OS X --------------- You can develop under your favorite modern Linux distro. Most of them support Open GL ES out of the box. But remember that implementation could be different and you have to test your application on the end device too. Just use `make` to build normal Linux / Mac OS X version. Emscripten ---------- Some other demos could be compiled into WebGL too. But the point of this demo is to be compiled without overhead and compatibility mode. `make web` to build a web-version using Emscripten. Raspberry Pi ------------ Accelerated Open GL ES2 output supported for Raspberry Pi too. But SDL2 in default Raspbian repositories is not supporting `rpi` video driver by default, so you have to compile SDL2 yourself. It is better to compile SDL2 without X11 support (*--disable-video-x11* configure option). Or use `export SDL_VIDEODRIVER=rpi` before each run of the application. More info can be found here: https://github.com/vurtun/nuklear/issues/748 `make rpi` to build the demo on your Raspberry Pi board. ================================================ FILE: demo/sdl_opengles2/main.c ================================================ /* nuklear - 1.40.8 - public domain */ #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_SDL_GLES2_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_sdl_gles2.h" #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the include * and the corresponding function. */ /*#include "../style.c"*/ /*#include "../calculator.c"*/ /*#include "../overview.c"*/ /*#include "../node_editor.c"*/ /* =============================================================== * * DEMO * * ===============================================================*/ /* Platform */ SDL_Window *win; int running = nk_true; static void MainLoop(void* loopArg){ struct nk_context *ctx = (struct nk_context *)loopArg; /* Input */ SDL_Event evt; nk_input_begin(ctx); while (SDL_PollEvent(&evt)) { if (evt.type == SDL_QUIT) running = nk_false; nk_sdl_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { nk_menubar_begin(ctx); nk_layout_row_begin(ctx, NK_STATIC, 25, 2); nk_layout_row_push(ctx, 45); if (nk_menu_begin_label(ctx, "FILE", NK_TEXT_LEFT, nk_vec2(120, 200))) { nk_layout_row_dynamic(ctx, 30, 1); nk_menu_item_label(ctx, "OPEN", NK_TEXT_LEFT); nk_menu_item_label(ctx, "CLOSE", NK_TEXT_LEFT); nk_menu_end(ctx); } nk_layout_row_push(ctx, 45); if (nk_menu_begin_label(ctx, "EDIT", NK_TEXT_LEFT, nk_vec2(120, 200))) { nk_layout_row_dynamic(ctx, 30, 1); nk_menu_item_label(ctx, "COPY", NK_TEXT_LEFT); nk_menu_item_label(ctx, "CUT", NK_TEXT_LEFT); nk_menu_item_label(ctx, "PASTE", NK_TEXT_LEFT); nk_menu_end(ctx); } nk_layout_row_end(ctx); nk_menubar_end(ctx); enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ /*calculator(ctx);*/ /*overview(ctx);*/ /*node_editor(ctx);*/ /* ----------------------------------------- */ /* Draw */ {float bg[4]; int win_width, win_height; nk_color_fv(bg, nk_rgb(28,48,62)); SDL_GetWindowSize(win, &win_width, &win_height); glViewport(0, 0, win_width, win_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg[0], bg[1], bg[2], bg[3]); /* IMPORTANT: `nk_sdl_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY); SDL_GL_SwapWindow(win);} } int main(int argc, char* argv[]) { /* GUI */ struct nk_context *ctx; SDL_GLContext glContext; /* SDL setup */ SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0"); /*SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS); // - do NOT init SDL on GL ES 2 */ SDL_GL_SetAttribute (SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); win = SDL_CreateWindow("Demo", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI); glContext = SDL_GL_CreateContext(win); /* OpenGL setup */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); ctx = nk_sdl_init(win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_sdl_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 16, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_sdl_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &roboto->handle)*/;} /* style.c */ /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #if defined(__EMSCRIPTEN__) #include emscripten_set_main_loop_arg(MainLoop, (void*)ctx, 0, nk_true); #else while (running) MainLoop((void*)ctx); #endif nk_sdl_shutdown(); SDL_GL_DeleteContext(glContext); SDL_DestroyWindow(win); SDL_Quit(); return 0; } ================================================ FILE: demo/sdl_opengles2/nuklear_sdl_gles2.h ================================================ /* * Nuklear - 1.40.8 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke * emscripten from 2016 by Chris Willcocks * OpenGL ES 2.0 from 2017 by Dmitry Hrabrov a.k.a. DeXPeriX */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_SDL_GLES2_H_ #define NK_SDL_GLES2_H_ #include #include NK_API struct nk_context* nk_sdl_init(SDL_Window *win); NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_sdl_font_stash_end(void); NK_API int nk_sdl_handle_event(SDL_Event *evt); NK_API void nk_sdl_render(enum nk_anti_aliasing , int max_vertex_buffer, int max_element_buffer); NK_API void nk_sdl_shutdown(void); NK_API void nk_sdl_device_destroy(void); NK_API void nk_sdl_device_create(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_SDL_GLES2_IMPLEMENTATION #include struct nk_sdl_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; GLsizei vs; size_t vp, vt, vc; }; struct nk_sdl_vertex { GLfloat position[2]; GLfloat uv[2]; nk_byte col[4]; }; static struct nk_sdl { SDL_Window *win; struct nk_sdl_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; } sdl; #define NK_SHADER_VERSION "#version 100\n" NK_API void nk_sdl_device_create(void) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "attribute vec2 Position;\n" "attribute vec2 TexCoord;\n" "attribute vec4 Color;\n" "varying vec2 Frag_UV;\n" "varying vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "varying vec2 Frag_UV;\n" "varying vec4 Frag_Color;\n" "void main(){\n" " gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV);\n" "}\n"; struct nk_sdl_device *dev = &sdl.ogl; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { dev->vs = sizeof(struct nk_sdl_vertex); dev->vp = offsetof(struct nk_sdl_vertex, position); dev->vt = offsetof(struct nk_sdl_vertex, uv); dev->vc = offsetof(struct nk_sdl_vertex, col); /* Allocate buffers */ glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); } NK_INTERN void nk_sdl_device_upload_atlas(const void *image, int width, int height) { struct nk_sdl_device *dev = &sdl.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_sdl_device_destroy(void) { struct nk_sdl_device *dev = &sdl.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } NK_API void nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { struct nk_sdl_device *dev = &sdl.ogl; int width, height; int display_width, display_height; struct nk_vec2 scale; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; SDL_GetWindowSize(sdl.win, &width, &height); SDL_GL_GetDrawableSize(sdl.win, &display_width, &display_height); ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; /* setup global state */ glViewport(0,0,display_width,display_height); glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* Bind buffers */ glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); { /* buffer setup */ glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, dev->vs, (void*)dev->vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, dev->vs, (void*)dev->vc); } glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); /* load vertices/elements directly into vertex/element buffer */ vertices = malloc((size_t)max_vertex_buffer); elements = malloc((size_t)max_element_buffer); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_sdl_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ {struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer); nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);} } glBufferSubData(GL_ARRAY_BUFFER, 0, (size_t)max_vertex_buffer, vertices); glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, (size_t)max_element_buffer, elements); free(vertices); free(elements); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor((GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&sdl.ctx); } glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } static void nk_sdl_clipboard_paste(nk_handle usr, struct nk_text_edit *edit) { const char *text = SDL_GetClipboardText(); if (text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; } static void nk_sdl_clipboard_copy(nk_handle usr, const char *text, int len) { char *str = 0; (void)usr; if (!len) return; str = (char*)malloc((size_t)len+1); if (!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; SDL_SetClipboardText(str); free(str); } NK_API struct nk_context* nk_sdl_init(SDL_Window *win) { sdl.win = win; nk_init_default(&sdl.ctx, 0); sdl.ctx.clip.copy = nk_sdl_clipboard_copy; sdl.ctx.clip.paste = nk_sdl_clipboard_paste; sdl.ctx.clip.userdata = nk_handle_ptr(0); nk_sdl_device_create(); return &sdl.ctx; } NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&sdl.atlas); nk_font_atlas_begin(&sdl.atlas); *atlas = &sdl.atlas; } NK_API void nk_sdl_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_sdl_device_upload_atlas(image, w, h); nk_font_atlas_end(&sdl.atlas, nk_handle_id((int)sdl.ogl.font_tex), &sdl.ogl.null); if (sdl.atlas.default_font) nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle); } NK_API int nk_sdl_handle_event(SDL_Event *evt) { struct nk_context *ctx = &sdl.ctx; if (evt->type == SDL_KEYUP || evt->type == SDL_KEYDOWN) { /* key events */ int down = evt->type == SDL_KEYDOWN; const Uint8* state = SDL_GetKeyboardState(0); SDL_Keycode sym = evt->key.keysym.sym; if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (sym == SDLK_DELETE) nk_input_key(ctx, NK_KEY_DEL, down); else if (sym == SDLK_RETURN) nk_input_key(ctx, NK_KEY_ENTER, down); else if (sym == SDLK_TAB) nk_input_key(ctx, NK_KEY_TAB, down); else if (sym == SDLK_BACKSPACE) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (sym == SDLK_HOME) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (sym == SDLK_END) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else if (sym == SDLK_PAGEDOWN) { nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); } else if (sym == SDLK_PAGEUP) { nk_input_key(ctx, NK_KEY_SCROLL_UP, down); } else if (sym == SDLK_z) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_r) nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_c) nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_v) nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_x) nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_b) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_e) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]); else if (sym == SDLK_UP) nk_input_key(ctx, NK_KEY_UP, down); else if (sym == SDLK_DOWN) nk_input_key(ctx, NK_KEY_DOWN, down); else if (sym == SDLK_LEFT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(ctx, NK_KEY_LEFT, down); } else if (sym == SDLK_RIGHT) { if (state[SDL_SCANCODE_LCTRL]) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(ctx, NK_KEY_RIGHT, down); } else return 0; return 1; } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) { /* mouse button */ int down = evt->type == SDL_MOUSEBUTTONDOWN; const int x = evt->button.x, y = evt->button.y; if (evt->button.button == SDL_BUTTON_LEFT) { if (evt->button.clicks > 1) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->button.button == SDL_BUTTON_MIDDLE) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->button.button == SDL_BUTTON_RIGHT) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); return 1; } else if (evt->type == SDL_MOUSEMOTION) { /* mouse motion */ if (ctx->input.mouse.grabbed) { int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y; nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel); } else nk_input_motion(ctx, evt->motion.x, evt->motion.y); return 1; } else if (evt->type == SDL_TEXTINPUT) { /* text input */ nk_glyph glyph; memcpy(glyph, evt->text.text, NK_UTF_SIZE); nk_input_glyph(ctx, glyph); return 1; } else if (evt->type == SDL_MOUSEWHEEL) { /* mouse wheel */ nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y)); return 1; } return 0; } NK_API void nk_sdl_shutdown(void) { nk_font_atlas_clear(&sdl.atlas); nk_free(&sdl.ctx); nk_sdl_device_destroy(); memset(&sdl, 0, sizeof(sdl)); } #endif ================================================ FILE: demo/sfml_opengl2/Makefile ================================================ # Install CC = g++ BIN = demo # Flags CFLAGS += -s -O2 SRC = main.cpp OBJ = $(SRC:.cpp=.o) ifeq ($(OS),Windows_NT) # Edit the line below to point to your SFML folder on Windows SFML_DIR = C:/Users/Ricky/MinGW-Libs/SFML BIN := $(BIN).exe LIBS = -lmingw32 -DSFML_STATIC -lsfml-window-s -lsfml-system-s -lopengl32 -lwinmm -lgdi32 else # Edit the line below to point to your SFML folder on Linux/MacOS SFML_DIR = /home/ricky/Libraries/SFML UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = -lsfml-window -lsfml-system -pthread -framework OpenGL else LIBS = -DSFML_STATIC -lsfml-window-s -lsfml-system-s -pthread -ludev -lGL -lX11 -lXrandr endif endif SFML_INC = -I $(SFML_DIR)/include SFML_LIB = -L $(SFML_DIR)/lib $(BIN): $(CC) $(SRC) $(CFLAGS) -o $(BIN) $(SFML_INC) $(SFML_LIB) $(LIBS) ================================================ FILE: demo/sfml_opengl2/Readme.md ================================================ # SFML 2.4 nuklear backend This backend provides support for [SFML 2.4](http://www.sfml-dev.org). It will work on all platforms supported by SFML. ## Compiling You have to edit the Makefile provided so that you can build the demo. Edit the SFML_DIR variable to point to your SFML root folder. This will be the folder to which SFML was installed and contains the lib and include folders. On Linux there is an extra step. You need to install the the udev development files. ================================================ FILE: demo/sfml_opengl2/main.cpp ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_SFML_GL2_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_sfml_gl2.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { /* Platform */ sf::ContextSettings settings(24, 8, 4, 2, 2); sf::Window win(sf::VideoMode(WINDOW_WIDTH, WINDOW_HEIGHT), "Demo", sf::Style::Default, settings); win.setVerticalSyncEnabled(true); win.setActive(true); glViewport(0, 0, win.getSize().x, win.getSize().y); /* GUI */ struct nk_context *ctx; ctx = nk_sfml_init(&win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ struct nk_font_atlas *atlas; nk_sfml_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_sfml_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/ /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif struct nk_colorf bg; bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (win.isOpen()) { /* Input */ sf::Event evt; nk_input_begin(ctx); while(win.pollEvent(evt)) { if(evt.type == sf::Event::Closed) win.close(); else if(evt.type == sf::Event::Resized) glViewport(0, 0, evt.size.width, evt.size.height); nk_sfml_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ win.setActive(true); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_sfml_render` modifies some global OpenGL state * with blending, scissor, face culling and depth test and defaults everything * back into a default state. Make sure to either save and restore or * reset your own state after drawing rendering the UI. */ nk_sfml_render(NK_ANTI_ALIASING_ON); win.display(); } nk_sfml_shutdown(); return 0; } ================================================ FILE: demo/sfml_opengl2/nuklear_sfml_gl2.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_SFML_GL2_H_ #define NK_SFML_GL2_H_ #include NK_API struct nk_context* nk_sfml_init(sf::Window* window); NK_API void nk_sfml_font_stash_begin(struct nk_font_atlas** atlas); NK_API void nk_sfml_font_stash_end(void); NK_API int nk_sfml_handle_event(sf::Event* event); NK_API void nk_sfml_render(enum nk_anti_aliasing); NK_API void nk_sfml_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_SFML_GL2_IMPLEMENTATION struct nk_sfml_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint font_tex; }; struct nk_sfml_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_sfml { sf::Window* window; struct nk_sfml_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; } sfml; NK_INTERN void nk_sfml_device_upload_atlas(const void* image, int width, int height) { struct nk_sfml_device* dev = &sfml.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_sfml_render(enum nk_anti_aliasing AA) { /* setup global state */ struct nk_sfml_device* dev = &sfml.ogl; int window_width = sfml.window->getSize().x; int window_height = sfml.window->getSize().y; glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glEnable(GL_BLEND); glEnable(GL_TEXTURE_2D); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glViewport(0, 0, (GLsizei)window_width, (GLsizei)window_height); glMatrixMode(GL_TEXTURE); glPushMatrix(); glLoadIdentity(); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); glOrtho(0.0f, window_width, window_height, 0.0f, -1.0f, 1.0f); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_COLOR_ARRAY); { GLsizei vs = sizeof(struct nk_sfml_vertex); size_t vp = NK_OFFSETOF(struct nk_sfml_vertex, position); size_t vt = NK_OFFSETOF(struct nk_sfml_vertex, uv); size_t vc = NK_OFFSETOF(struct nk_sfml_vertex, col); /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command* cmd; const nk_draw_index* offset = NULL; struct nk_buffer vbuf, ebuf; /* fill converting configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sfml_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sfml_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sfml_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_sfml_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_sfml_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* convert shapes into vertices */ nk_buffer_init_default(&vbuf); nk_buffer_init_default(&ebuf); nk_convert(&sfml.ctx, &dev->cmds, &vbuf, &ebuf, &config); /* setup vertex buffer pointer */ const void* vertices = nk_buffer_memory_const(&vbuf); glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp)); glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt)); glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc)); /* iterate over and execute each draw command */ offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf); nk_draw_foreach(cmd, &sfml.ctx, &dev->cmds) { if(!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x), (GLint)((window_height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), (GLint)(cmd->clip_rect.w), (GLint)(cmd->clip_rect.h)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&sfml.ctx); nk_buffer_free(&vbuf); nk_buffer_free(&ebuf); } /* default OpenGL state */ glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glDisable(GL_SCISSOR_TEST); glDisable(GL_BLEND); glDisable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, 0); glMatrixMode(GL_TEXTURE); glPopMatrix(); glMatrixMode(GL_MODELVIEW); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); glPopAttrib(); } static void nk_sfml_clipboard_paste(nk_handle usr, struct nk_text_edit* edit) { #if 0 /* Not Implemented in SFML */ sf::Clipboard clipboard(sfml.window); const char* text = clipboard.getText(); if(text) nk_textedit_paste(edit, text, nk_strlen(text)); (void)usr; #endif } static void nk_sfml_clipboard_copy(nk_handle usr, const char* text, int len) { #if 0 char* str = 0; (void)usr; if(!len) return; str = (char*)malloc((size_t)len+1); if(!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; /* Not Implemented in SFML */ sf::Clipboard clipboard(sfml.window); clipboard.setText(str); free(str); #endif } NK_API struct nk_context* nk_sfml_init(sf::Window* window) { sfml.window = window; nk_init_default(&sfml.ctx, 0); sfml.ctx.clip.copy = nk_sfml_clipboard_copy; sfml.ctx.clip.paste = nk_sfml_clipboard_paste; sfml.ctx.clip.userdata = nk_handle_ptr(0); nk_buffer_init_default(&sfml.ogl.cmds); return &sfml.ctx; } NK_API void nk_sfml_font_stash_begin(struct nk_font_atlas** atlas) { nk_font_atlas_init_default(&sfml.atlas); nk_font_atlas_begin(&sfml.atlas); *atlas = &sfml.atlas; } NK_API void nk_sfml_font_stash_end() { int w, h; const void* img; img = nk_font_atlas_bake(&sfml.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_sfml_device_upload_atlas(img, w, h); nk_font_atlas_end(&sfml.atlas, nk_handle_id((int)sfml.ogl.font_tex), &sfml.ogl.null); if(sfml.atlas.default_font) nk_style_set_font(&sfml.ctx, &sfml.atlas.default_font->handle); } NK_API int nk_sfml_handle_event(sf::Event* evt) { struct nk_context* ctx = &sfml.ctx; /* optional grabbing behavior */ if(ctx->input.mouse.grab) ctx->input.mouse.grab = 0; else if(ctx->input.mouse.ungrab) { int x = (int)ctx->input.mouse.prev.x; int y = (int)ctx->input.mouse.prev.y; sf::Mouse::setPosition(sf::Vector2i(x, y), *sfml.window); ctx->input.mouse.ungrab = 0; } if(evt->type == sf::Event::KeyReleased || evt->type == sf::Event::KeyPressed) { int down = evt->type == sf::Event::KeyPressed; sf::Keyboard::Key key = evt->key.code; if(key == sf::Keyboard::RShift || key == sf::Keyboard::LShift) nk_input_key(ctx, NK_KEY_SHIFT, down); else if(key == sf::Keyboard::Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if(key == sf::Keyboard::Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if(key == sf::Keyboard::Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if(key == sf::Keyboard::BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if(key == sf::Keyboard::Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if(key == sf::Keyboard::End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else if(key == sf::Keyboard::PageDown) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if(key == sf::Keyboard::PageUp) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if(key == sf::Keyboard::Z) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::R) nk_input_key(ctx, NK_KEY_TEXT_REDO, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::C) nk_input_key(ctx, NK_KEY_COPY, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::V) nk_input_key(ctx, NK_KEY_PASTE, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::X) nk_input_key(ctx, NK_KEY_CUT, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::B) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::E) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::Up) nk_input_key(ctx, NK_KEY_UP, down); else if(key == sf::Keyboard::Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if(key == sf::Keyboard::Left) { if(sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(ctx, NK_KEY_LEFT, down); } else if(key == sf::Keyboard::Right) { if(sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(ctx, NK_KEY_RIGHT, down); } else return 0; return 1; } else if(evt->type == sf::Event::MouseButtonPressed || evt->type == sf::Event::MouseButtonReleased) { int down = evt->type == sf::Event::MouseButtonPressed; const int x = evt->mouseButton.x, y = evt->mouseButton.y; if(evt->mouseButton.button == sf::Mouse::Left) nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); if(evt->mouseButton.button == sf::Mouse::Middle) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); if(evt->mouseButton.button == sf::Mouse::Right) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else return 0; return 1; } else if(evt->type == sf::Event::MouseMoved) { nk_input_motion(ctx, evt->mouseMove.x, evt->mouseMove.y); return 1; } else if(evt->type == sf::Event::TouchBegan || evt->type == sf::Event::TouchEnded) { int down = evt->type == sf::Event::TouchBegan; const int x = evt->touch.x, y = evt->touch.y; ctx->input.mouse.pos.x = x; ctx->input.mouse.pos.y = y; nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); return 1; } else if(evt->type == sf::Event::TouchMoved) { if(ctx->input.mouse.grabbed) { int x = (int)ctx->input.mouse.prev.x; int y = (int)ctx->input.mouse.prev.y; nk_input_motion(ctx, x + evt->touch.x, y + evt->touch.y); } else nk_input_motion(ctx, evt->touch.x, evt->touch.y); return 1; } else if(evt->type == sf::Event::TextEntered) { nk_input_unicode(ctx, evt->text.unicode); return 1; } else if(evt->type == sf::Event::MouseWheelScrolled) { nk_input_scroll(ctx, nk_vec2(0,evt->mouseWheelScroll.delta)); return 1; } return 0; } NK_API void nk_sfml_shutdown(void) { struct nk_sfml_device* dev = &sfml.ogl; nk_font_atlas_clear(&sfml.atlas); nk_free(&sfml.ctx); glDeleteTextures(1, &dev->font_tex); nk_buffer_free(&dev->cmds); memset(&sfml, 0, sizeof(sfml)); } #endif ================================================ FILE: demo/sfml_opengl3/Makefile ================================================ # Install CC = g++ BIN = demo # Flags CFLAGS += -s -O2 SRC = main.cpp OBJ = $(SRC:.cpp=.o) ifeq ($(OS),Windows_NT) # Edit the line below to point to your SFML/GLAD folder on Windows SFML_DIR = C:/Users/Ricky/MinGW-Libs/SFML GLAD_DIR = C:/Users/Ricky/MinGW-Libs/GLAD BIN := $(BIN).exe LIBS = -lmingw32 -DSFML_STATIC -lsfml-window-s -lsfml-system-s -lopengl32 -lwinmm -lgdi32 else # Edit the line below to point to your SFML/GLAD folder on Linux/MacOS SFML_DIR = /home/ricky/Libraries/SFML GLAD_DIR = /home/ricky/Libraries/GLAD UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = -lsfml-window -lsfml-system -pthread -framework OpenGL else LIBS = -DSFML_STATIC -lsfml-window-s -lsfml-system-s -pthread -ludev -lGL -lX11 -lXrandr endif endif SFML_INC = -I $(SFML_DIR)/include SFML_LIB = -L $(SFML_DIR)/lib GLAD_INC = -I $(GLAD_DIR)/include GLAD_SRC = $(GLAD_DIR)/src/glad.c $(BIN): $(CC) $(GLAD_SRC) $(SRC) $(CFLAGS) $(GLAD_INC) $(SFML_INC) $(SFML_LIB) $(SFML_EXT) -o $(BIN) $(LIBS) ================================================ FILE: demo/sfml_opengl3/Readme.md ================================================ # SFML 2.4 nuklear backend This backend provides support for [SFML 2.4](http://www.sfml-dev.org). It will work on all platforms supported by SFML. ## Compiling This backend uses Glad to handle OpenGL extensions. You can download the Glad files used to test this backend from [this 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nsions=GL_SGIS_sharpen_texture&extensions=GL_SGIS_texture4D&extensions=GL_SGIS_texture_border_clamp&extensions=GL_SGIS_texture_color_mask&extensions=GL_SGIS_texture_edge_clamp&extensions=GL_SGIS_texture_filter4&extensions=GL_SGIS_texture_lod&extensions=GL_SGIS_texture_select&extensions=GL_SGIX_async&extensions=GL_SGIX_async_histogram&extensions=GL_SGIX_async_pixel&extensions=GL_SGIX_blend_alpha_minmax&extensions=GL_SGIX_calligraphic_fragment&extensions=GL_SGIX_clipmap&extensions=GL_SGIX_convolution_accuracy&extensions=GL_SGIX_depth_pass_instrument&extensions=GL_SGIX_depth_texture&extensions=GL_SGIX_flush_raster&extensions=GL_SGIX_fog_offset&extensions=GL_SGIX_fragment_lighting&extensions=GL_SGIX_framezoom&extensions=GL_SGIX_igloo_interface&extensions=GL_SGIX_instruments&extensions=GL_SGIX_interlace&extensions=GL_SGIX_ir_instrument1&extensions=GL_SGIX_list_priority&extensions=GL_SGIX_pixel_texture&extensions=GL_SGIX_pixel_tiles&extensions=GL_SGIX_polynomial_ffd&extensions=GL_SGIX_reference_plane&extensions=GL_SGIX_resample&extensions=GL_SGIX_scalebias_hint&extensions=GL_SGIX_shadow&extensions=GL_SGIX_shadow_ambient&extensions=GL_SGIX_sprite&extensions=GL_SGIX_subsample&extensions=GL_SGIX_tag_sample_buffer&extensions=GL_SGIX_texture_add_env&extensions=GL_SGIX_texture_coordinate_clamp&extensions=GL_SGIX_texture_lod_bias&extensions=GL_SGIX_texture_multi_buffer&extensions=GL_SGIX_texture_scale_bias&extensions=GL_SGIX_vertex_preclip&extensions=GL_SGIX_ycrcb&extensions=GL_SGIX_ycrcb_subsample&extensions=GL_SGIX_ycrcba&extensions=GL_SGI_color_matrix&extensions=GL_SGI_color_table&extensions=GL_SGI_texture_color_table&extensions=GL_SUNX_constant_data&extensions=GL_SUN_convolution_border_modes&extensions=GL_SUN_global_alpha&extensions=GL_SUN_mesh_array&extensions=GL_SUN_slice_accum&extensions=GL_SUN_triangle_list&extensions=GL_SUN_vertex&extensions=GL_VIV_shader_binary&extensions=GL_WIN_phong_shading&extensions=GL_WIN_specular_fog&language=c&specification=gl&loader=on) or you can create your own loader by visiting the [Glad site](http://glad.dav1d.de/). Once SFML and Glad have been installed on your system you have to edit the Makefile provided so that you can build the demo. There are two variables that need to be edited: SFML_DIR and GLAD_DIR. Make these point to your SFML root folder and Glad root folder respectively. On Linux there is an extra step. You need to install the the udev development files. ================================================ FILE: demo/sfml_opengl3/main.cpp ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_SFML_GL3_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_sfml_gl3.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_ELEMENT_BUFFER 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { /* Platform */ sf::ContextSettings settings(24, 8, 4, 3, 3); sf::Window win(sf::VideoMode(WINDOW_WIDTH, WINDOW_HEIGHT), "Demo", sf::Style::Default, settings); win.setVerticalSyncEnabled(true); win.setActive(true); if(!gladLoadGL()) { /* Load OpenGL extensions */ printf("Failed to load OpenGL extensions!\n"); return -1; } glViewport(0, 0, win.getSize().x, win.getSize().y); /* GUI */ struct nk_context *ctx; ctx = nk_sfml_init(&win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ struct nk_font_atlas *atlas; nk_sfml_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_sfml_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/ /* style.c */ #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif struct nk_colorf bg; bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (win.isOpen()) { /* Input */ sf::Event evt; nk_input_begin(ctx); while(win.pollEvent(evt)) { if(evt.type == sf::Event::Closed) win.close(); else if(evt.type == sf::Event::Resized) glViewport(0, 0, evt.size.width, evt.size.height); nk_sfml_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ win.setActive(true); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_sfml_render` modifies some global OpenGL state * with blending, scissor, face culling and depth test and defaults everything * back into a default state. Make sure to either save and restore or * reset your own state after drawing rendering the UI. */ nk_sfml_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); win.display(); } nk_sfml_shutdown(); return 0; } ================================================ FILE: demo/sfml_opengl3/nuklear_sfml_gl3.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_SFML_GL3_H_ #define NK_SFML_GL3_H_ /* Feel free to edit here and include your own extension wrangler */ #include /* I use GLAD but you can use GLEW or what you like */ #include NK_API struct nk_context* nk_sfml_init(sf::Window* window); NK_API void nk_sfml_font_stash_begin(struct nk_font_atlas** atlas); NK_API void nk_sfml_font_stash_end(void); NK_API int nk_sfml_handle_event(sf::Event* event); NK_API void nk_sfml_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); NK_API void nk_sfml_shutdown(void); NK_API void nk_sfml_device_create(void); NK_API void nk_sfml_device_destroy(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_SFML_GL3_IMPLEMENTATION #include struct nk_sfml_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; struct nk_sfml_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; static struct nk_sfml { sf::Window* window; struct nk_sfml_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; } sfml; #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif NK_API void nk_sfml_device_create(void) { GLint status; static const GLchar* vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; struct nk_sfml_device* dev = &sfml.ogl; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_sfml_vertex); size_t vp = NK_OFFSETOF(struct nk_sfml_vertex, position); size_t vt = NK_OFFSETOF(struct nk_sfml_vertex, uv); size_t vc = NK_OFFSETOF(struct nk_sfml_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } NK_API void nk_sfml_device_destroy(void) { struct nk_sfml_device* dev = &sfml.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->vert_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } NK_INTERN void nk_sfml_device_upload_atlas(const void* image, int width, int height) { struct nk_sfml_device* dev = &sfml.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_sfml_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { /* setup global state */ struct nk_sfml_device* dev = &sfml.ogl; int window_width = sfml.window->getSize().x; int window_height = sfml.window->getSize().y; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)window_width; ortho[1][1] /= (GLfloat)window_height; glViewport(0, 0, window_width, window_height); glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); /* load vertices/elements directly into vertex/element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sfml_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sfml_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sfml_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_sfml_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_sfml_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, (nk_size)max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (nk_size)max_element_buffer); nk_convert(&sfml.ctx, &dev->cmds, &vbuf, &ebuf, &config); } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &sfml.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x), (GLint)((window_height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), (GLint)(cmd->clip_rect.w), (GLint)(cmd->clip_rect.h)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&sfml.ctx); } glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } static void nk_sfml_clipboard_paste(nk_handle usr, struct nk_text_edit* edit) { #if 0 /* Not Implemented in SFML */ (void)usr; sf::Clipboard clipboard(sfml.window); const char* text = clipboard.getText(); if(text) nk_textedit_paste(edit, text, nk_strlen(text)); #endif } static void nk_sfml_clipboard_copy(nk_handle usr, const char* text, int len) { #if 0 char* str = 0; (void)usr; if(!len) return; str = (char*)malloc((size_t)len+1); if(!str) return; memcpy(str, text, (size_t)len); str[len] = '\0'; /* Not Implemented in SFML */ sf::Clipboard clipboard(sfml.window); clipboard.setText(str); free(str); #endif } NK_API struct nk_context* nk_sfml_init(sf::Window* window) { sfml.window = window; nk_init_default(&sfml.ctx, 0); sfml.ctx.clip.copy = nk_sfml_clipboard_copy; sfml.ctx.clip.paste = nk_sfml_clipboard_paste; sfml.ctx.clip.userdata = nk_handle_ptr(0); nk_sfml_device_create(); return &sfml.ctx; } NK_API void nk_sfml_font_stash_begin(struct nk_font_atlas** atlas) { nk_font_atlas_init_default(&sfml.atlas); nk_font_atlas_begin(&sfml.atlas); *atlas = &sfml.atlas; } NK_API void nk_sfml_font_stash_end() { const void* image; int w, h; image = nk_font_atlas_bake(&sfml.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_sfml_device_upload_atlas(image, w, h); nk_font_atlas_end(&sfml.atlas, nk_handle_id((int)sfml.ogl.font_tex), &sfml.ogl.null); if(sfml.atlas.default_font) nk_style_set_font(&sfml.ctx, &sfml.atlas.default_font->handle); } NK_API int nk_sfml_handle_event(sf::Event* evt) { struct nk_context* ctx = &sfml.ctx; /* optional grabbing behavior */ if(ctx->input.mouse.grab) ctx->input.mouse.grab = 0; else if(ctx->input.mouse.ungrab) { int x = (int)ctx->input.mouse.prev.x; int y = (int)ctx->input.mouse.prev.y; sf::Mouse::setPosition(sf::Vector2i(x, y), *sfml.window); ctx->input.mouse.ungrab = 0; } if(evt->type == sf::Event::KeyReleased || evt->type == sf::Event::KeyPressed) { int down = evt->type == sf::Event::KeyPressed; sf::Keyboard::Key key = evt->key.code; if(key == sf::Keyboard::RShift || key == sf::Keyboard::LShift) nk_input_key(ctx, NK_KEY_SHIFT, down); else if(key == sf::Keyboard::Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if(key == sf::Keyboard::Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if(key == sf::Keyboard::Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if(key == sf::Keyboard::BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if(key == sf::Keyboard::Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if(key == sf::Keyboard::End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else if(key == sf::Keyboard::PageDown) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if(key == sf::Keyboard::PageUp) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if(key == sf::Keyboard::Z) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::R) nk_input_key(ctx, NK_KEY_TEXT_REDO, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::C) nk_input_key(ctx, NK_KEY_COPY, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::V) nk_input_key(ctx, NK_KEY_PASTE, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::X) nk_input_key(ctx, NK_KEY_CUT, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::B) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::E) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)); else if(key == sf::Keyboard::Up) nk_input_key(ctx, NK_KEY_UP, down); else if(key == sf::Keyboard::Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if(key == sf::Keyboard::Left) { if(sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else nk_input_key(ctx, NK_KEY_LEFT, down); } else if(key == sf::Keyboard::Right) { if(sf::Keyboard::isKeyPressed(sf::Keyboard::LControl)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else nk_input_key(ctx, NK_KEY_RIGHT, down); } else return 0; return 1; } else if(evt->type == sf::Event::MouseButtonPressed || evt->type == sf::Event::MouseButtonReleased) { int down = evt->type == sf::Event::MouseButtonPressed; const int x = evt->mouseButton.x, y = evt->mouseButton.y; if(evt->mouseButton.button == sf::Mouse::Left) nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); if(evt->mouseButton.button == sf::Mouse::Middle) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); if(evt->mouseButton.button == sf::Mouse::Right) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else return 0; return 1; } else if(evt->type == sf::Event::MouseMoved) { nk_input_motion(ctx, evt->mouseMove.x, evt->mouseMove.y); return 1; } else if(evt->type == sf::Event::TouchBegan || evt->type == sf::Event::TouchEnded) { int down = evt->type == sf::Event::TouchBegan; const int x = evt->touch.x, y = evt->touch.y; nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); return 1; } else if(evt->type == sf::Event::TouchMoved) { if(ctx->input.mouse.grabbed) { int x = (int)ctx->input.mouse.prev.x; int y = (int)ctx->input.mouse.prev.y; nk_input_motion(ctx, x + evt->touch.x, y + evt->touch.y); } else nk_input_motion(ctx, evt->touch.x, evt->touch.y); return 1; } else if(evt->type == sf::Event::TextEntered) { nk_input_unicode(ctx, evt->text.unicode); return 1; } else if(evt->type == sf::Event::MouseWheelScrolled) { nk_input_scroll(ctx, nk_vec2(0,evt->mouseWheelScroll.delta)); return 1; } return 0; } NK_API void nk_sfml_shutdown() { nk_font_atlas_clear(&sfml.atlas); nk_free(&sfml.ctx); nk_sfml_device_destroy(); memset(&sfml, 0, sizeof(sfml)); } #endif ================================================ FILE: demo/style.c ================================================ enum theme {THEME_BLACK, THEME_WHITE, THEME_RED, THEME_BLUE, THEME_DARK}; static void set_style(struct nk_context *ctx, enum theme theme) { struct nk_color table[NK_COLOR_COUNT]; if (theme == THEME_WHITE) { table[NK_COLOR_TEXT] = nk_rgba(70, 70, 70, 255); table[NK_COLOR_WINDOW] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_HEADER] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_BORDER] = nk_rgba(0, 0, 0, 255); table[NK_COLOR_BUTTON] = nk_rgba(185, 185, 185, 255); table[NK_COLOR_BUTTON_HOVER] = nk_rgba(170, 170, 170, 255); table[NK_COLOR_BUTTON_ACTIVE] = nk_rgba(160, 160, 160, 255); table[NK_COLOR_TOGGLE] = nk_rgba(150, 150, 150, 255); table[NK_COLOR_TOGGLE_HOVER] = nk_rgba(120, 120, 120, 255); table[NK_COLOR_TOGGLE_CURSOR] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_SELECT] = nk_rgba(190, 190, 190, 255); table[NK_COLOR_SELECT_ACTIVE] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_SLIDER] = nk_rgba(190, 190, 190, 255); table[NK_COLOR_SLIDER_CURSOR] = nk_rgba(80, 80, 80, 255); table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgba(70, 70, 70, 255); table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgba(60, 60, 60, 255); table[NK_COLOR_PROPERTY] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_EDIT] = nk_rgba(150, 150, 150, 255); table[NK_COLOR_EDIT_CURSOR] = nk_rgba(0, 0, 0, 255); table[NK_COLOR_COMBO] = nk_rgba(175, 175, 175, 255); table[NK_COLOR_CHART] = nk_rgba(160, 160, 160, 255); table[NK_COLOR_CHART_COLOR] = nk_rgba(45, 45, 45, 255); table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgba( 255, 0, 0, 255); table[NK_COLOR_SCROLLBAR] = nk_rgba(180, 180, 180, 255); table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgba(140, 140, 140, 255); table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgba(150, 150, 150, 255); table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgba(160, 160, 160, 255); table[NK_COLOR_TAB_HEADER] = nk_rgba(180, 180, 180, 255); nk_style_from_table(ctx, table); } else if (theme == THEME_RED) { table[NK_COLOR_TEXT] = nk_rgba(190, 190, 190, 255); table[NK_COLOR_WINDOW] = nk_rgba(30, 33, 40, 215); table[NK_COLOR_HEADER] = nk_rgba(181, 45, 69, 220); table[NK_COLOR_BORDER] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_BUTTON] = nk_rgba(181, 45, 69, 255); table[NK_COLOR_BUTTON_HOVER] = nk_rgba(190, 50, 70, 255); table[NK_COLOR_BUTTON_ACTIVE] = nk_rgba(195, 55, 75, 255); table[NK_COLOR_TOGGLE] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_TOGGLE_HOVER] = nk_rgba(45, 60, 60, 255); table[NK_COLOR_TOGGLE_CURSOR] = nk_rgba(181, 45, 69, 255); table[NK_COLOR_SELECT] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_SELECT_ACTIVE] = nk_rgba(181, 45, 69, 255); table[NK_COLOR_SLIDER] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_SLIDER_CURSOR] = nk_rgba(181, 45, 69, 255); table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgba(186, 50, 74, 255); table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgba(191, 55, 79, 255); table[NK_COLOR_PROPERTY] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_EDIT] = nk_rgba(51, 55, 67, 225); table[NK_COLOR_EDIT_CURSOR] = nk_rgba(190, 190, 190, 255); table[NK_COLOR_COMBO] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_CHART] = nk_rgba(51, 55, 67, 255); table[NK_COLOR_CHART_COLOR] = nk_rgba(170, 40, 60, 255); table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgba( 255, 0, 0, 255); table[NK_COLOR_SCROLLBAR] = nk_rgba(30, 33, 40, 255); table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgba(64, 84, 95, 255); table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgba(70, 90, 100, 255); table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgba(75, 95, 105, 255); table[NK_COLOR_TAB_HEADER] = nk_rgba(181, 45, 69, 220); nk_style_from_table(ctx, table); } else if (theme == THEME_BLUE) { table[NK_COLOR_TEXT] = nk_rgba(20, 20, 20, 255); table[NK_COLOR_WINDOW] = nk_rgba(202, 212, 214, 215); table[NK_COLOR_HEADER] = nk_rgba(137, 182, 224, 220); table[NK_COLOR_BORDER] = nk_rgba(140, 159, 173, 255); table[NK_COLOR_BUTTON] = nk_rgba(137, 182, 224, 255); table[NK_COLOR_BUTTON_HOVER] = nk_rgba(142, 187, 229, 255); table[NK_COLOR_BUTTON_ACTIVE] = nk_rgba(147, 192, 234, 255); table[NK_COLOR_TOGGLE] = nk_rgba(177, 210, 210, 255); table[NK_COLOR_TOGGLE_HOVER] = nk_rgba(182, 215, 215, 255); table[NK_COLOR_TOGGLE_CURSOR] = nk_rgba(137, 182, 224, 255); table[NK_COLOR_SELECT] = nk_rgba(177, 210, 210, 255); table[NK_COLOR_SELECT_ACTIVE] = nk_rgba(137, 182, 224, 255); table[NK_COLOR_SLIDER] = nk_rgba(177, 210, 210, 255); table[NK_COLOR_SLIDER_CURSOR] = nk_rgba(137, 182, 224, 245); table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgba(142, 188, 229, 255); table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgba(147, 193, 234, 255); table[NK_COLOR_PROPERTY] = nk_rgba(210, 210, 210, 255); table[NK_COLOR_EDIT] = nk_rgba(210, 210, 210, 225); table[NK_COLOR_EDIT_CURSOR] = nk_rgba(20, 20, 20, 255); table[NK_COLOR_COMBO] = nk_rgba(210, 210, 210, 255); table[NK_COLOR_CHART] = nk_rgba(210, 210, 210, 255); table[NK_COLOR_CHART_COLOR] = nk_rgba(137, 182, 224, 255); table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgba( 255, 0, 0, 255); table[NK_COLOR_SCROLLBAR] = nk_rgba(190, 200, 200, 255); table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgba(64, 84, 95, 255); table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgba(70, 90, 100, 255); table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgba(75, 95, 105, 255); table[NK_COLOR_TAB_HEADER] = nk_rgba(156, 193, 220, 255); nk_style_from_table(ctx, table); } else if (theme == THEME_DARK) { table[NK_COLOR_TEXT] = nk_rgba(210, 210, 210, 255); table[NK_COLOR_WINDOW] = nk_rgba(57, 67, 71, 215); table[NK_COLOR_HEADER] = nk_rgba(51, 51, 56, 220); table[NK_COLOR_BORDER] = nk_rgba(46, 46, 46, 255); table[NK_COLOR_BUTTON] = nk_rgba(48, 83, 111, 255); table[NK_COLOR_BUTTON_HOVER] = nk_rgba(58, 93, 121, 255); table[NK_COLOR_BUTTON_ACTIVE] = nk_rgba(63, 98, 126, 255); table[NK_COLOR_TOGGLE] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_TOGGLE_HOVER] = nk_rgba(45, 53, 56, 255); table[NK_COLOR_TOGGLE_CURSOR] = nk_rgba(48, 83, 111, 255); table[NK_COLOR_SELECT] = nk_rgba(57, 67, 61, 255); table[NK_COLOR_SELECT_ACTIVE] = nk_rgba(48, 83, 111, 255); table[NK_COLOR_SLIDER] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_SLIDER_CURSOR] = nk_rgba(48, 83, 111, 245); table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgba(53, 88, 116, 255); table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgba(58, 93, 121, 255); table[NK_COLOR_PROPERTY] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_EDIT] = nk_rgba(50, 58, 61, 225); table[NK_COLOR_EDIT_CURSOR] = nk_rgba(210, 210, 210, 255); table[NK_COLOR_COMBO] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_CHART] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_CHART_COLOR] = nk_rgba(48, 83, 111, 255); table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgba(255, 0, 0, 255); table[NK_COLOR_SCROLLBAR] = nk_rgba(50, 58, 61, 255); table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgba(48, 83, 111, 255); table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgba(53, 88, 116, 255); table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgba(58, 93, 121, 255); table[NK_COLOR_TAB_HEADER] = nk_rgba(48, 83, 111, 255); nk_style_from_table(ctx, table); } else { nk_style_default(ctx); } } ================================================ FILE: demo/x11/Makefile ================================================ # Install BIN = zahnrad # Flags CFLAGS += -std=c89 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -D_POSIX_C_SOURCE=200809L -o bin/$(BIN) -lX11 -lm ================================================ FILE: demo/x11/main.c ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_XLIB_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_xlib.h" #define DTIME 20 #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 typedef struct XWindow XWindow; struct XWindow { Display *dpy; Window root; Visual *vis; Colormap cmap; XWindowAttributes attr; XSetWindowAttributes swa; Window win; int screen; XFont *font; unsigned int width; unsigned int height; Atom wm_delete_window; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static long timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } static void sleep_for(long t) { struct timespec req; const time_t sec = (int)(t/1000); const long ms = t - (sec * 1000); req.tv_sec = sec; req.tv_nsec = ms * 1000000L; while(-1 == nanosleep(&req, &req)); } /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { long dt; long started; int running = 1; XWindow xw; struct nk_context *ctx; /* X11 */ memset(&xw, 0, sizeof xw); xw.dpy = XOpenDisplay(NULL); if (!xw.dpy) die("Could not open a display; perhaps $DISPLAY is not set?"); xw.root = DefaultRootWindow(xw.dpy); xw.screen = XDefaultScreen(xw.dpy); xw.vis = XDefaultVisual(xw.dpy, xw.screen); xw.cmap = XCreateColormap(xw.dpy,xw.root,xw.vis,AllocNone); xw.swa.colormap = xw.cmap; xw.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask | KeymapStateMask; xw.win = XCreateWindow(xw.dpy, xw.root, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, XDefaultDepth(xw.dpy, xw.screen), InputOutput, xw.vis, CWEventMask | CWColormap, &xw.swa); XStoreName(xw.dpy, xw.win, "X11"); XMapWindow(xw.dpy, xw.win); xw.wm_delete_window = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False); XSetWMProtocols(xw.dpy, xw.win, &xw.wm_delete_window, 1); XGetWindowAttributes(xw.dpy, xw.win, &xw.attr); xw.width = (unsigned int)xw.attr.width; xw.height = (unsigned int)xw.attr.height; /* GUI */ xw.font = nk_xfont_create(xw.dpy, "fixed"); ctx = nk_xlib_init(xw.font, xw.dpy, xw.screen, xw.win, xw.width, xw.height); #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif while (running) { /* Input */ XEvent evt; started = timestamp(); nk_input_begin(ctx); while (XPending(xw.dpy)) { XNextEvent(xw.dpy, &evt); if (evt.type == ClientMessage) goto cleanup; if (XFilterEvent(&evt, xw.win)) continue; nk_xlib_handle_event(xw.dpy, xw.screen, xw.win, &evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); if (nk_window_is_hidden(ctx, "Demo")) break; /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ XClearWindow(xw.dpy, xw.win); nk_xlib_render(xw.win, nk_rgb(30,30,30)); XFlush(xw.dpy); /* Timing */ dt = timestamp() - started; if (dt < DTIME) sleep_for(DTIME - dt); } cleanup: nk_xfont_del(xw.dpy, xw.font); nk_xlib_shutdown(); XUnmapWindow(xw.dpy, xw.win); XFreeColormap(xw.dpy, xw.cmap); XDestroyWindow(xw.dpy, xw.win); XCloseDisplay(xw.dpy); return 0; } ================================================ FILE: demo/x11/nuklear_xlib.h ================================================ /* * Nuklear - v1.40.8 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIB_H_ #define NK_XLIB_H_ #include typedef struct XFont XFont; NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, unsigned w, unsigned h); NK_API int nk_xlib_handle_event(Display*, int scrn, Window, XEvent*); NK_API void nk_xlib_render(Drawable screen, struct nk_color clear); NK_API void nk_xlib_shutdown(void); NK_API void nk_xlib_set_font(XFont*); NK_API void nk_xlib_push_font(XFont*); NK_API void nk_xlib_paste(nk_handle, struct nk_text_edit*); NK_API void nk_xlib_copy(nk_handle, const char*, int len); /* Image */ #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename); NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize); #endif /* Font */ NK_API XFont* nk_xfont_create(Display *dpy, const char *name); NK_API void nk_xfont_del(Display *dpy, XFont *font); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIB_IMPLEMENTATION #include #include #include #include #include #include #include #include #ifdef NK_XLIB_IMPLEMENT_STB_IMAGE #define STB_IMAGE_IMPLEMENTATION #endif #ifdef NK_XLIB_INCLUDE_STB_IMAGE #include "../../example/stb_image.h" #endif #ifndef NK_X11_DOUBLE_CLICK_LO #define NK_X11_DOUBLE_CLICK_LO 20 #endif #ifndef NK_X11_DOUBLE_CLICK_HI #define NK_X11_DOUBLE_CLICK_HI 200 #endif typedef struct XSurface XSurface; typedef struct XImageWithAlpha XImageWithAlpha; struct XFont { int ascent; int descent; int height; XFontSet set; XFontStruct *xfont; struct nk_user_font handle; }; struct XSurface { GC gc; Display *dpy; int screen; Window root; Drawable drawable; unsigned int w, h; }; struct XImageWithAlpha { XImage* ximage; GC clipMaskGC; Pixmap clipMask; }; static struct { char *clipboard_data; int clipboard_len; struct nk_text_edit* clipboard_target; Atom xa_clipboard; Atom xa_targets; Atom xa_text; Atom xa_utf8_string; struct nk_context ctx; struct XSurface *surf; Cursor cursor; Display *dpy; Window root; long last_button_click; } xlib; NK_INTERN long nk_timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } NK_INTERN unsigned long nk_color_from_byte(const nk_byte *c) { unsigned long res = 0; res |= (unsigned long)c[0] << 16; res |= (unsigned long)c[1] << 8; res |= (unsigned long)c[2] << 0; return (res); } NK_INTERN XSurface* nk_xsurf_create(int screen, unsigned int w, unsigned int h) { XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface)); surface->w = w; surface->h = h; surface->dpy = xlib.dpy; surface->screen = screen; surface->root = xlib.root; surface->gc = XCreateGC(xlib.dpy, xlib.root, 0, NULL); XSetLineAttributes(xlib.dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter); surface->drawable = XCreatePixmap(xlib.dpy, xlib.root, w, h, (unsigned int)DefaultDepth(xlib.dpy, screen)); return surface; } NK_INTERN void nk_xsurf_resize(XSurface *surf, unsigned int w, unsigned int h) { if(!surf) return; if (surf->w == w && surf->h == h) return; surf->w = w; surf->h = h; if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable); surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h, (unsigned int)DefaultDepth(surf->dpy, surf->screen)); } NK_INTERN void nk_xsurf_scissor(XSurface *surf, float x, float y, float w, float h) { XRectangle clip_rect; clip_rect.x = (short)(x-1); clip_rect.y = (short)(y-1); clip_rect.width = (unsigned short)(w+2); clip_rect.height = (unsigned short)(h+2); XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted); } NK_INTERN void nk_xsurf_stroke_line(XSurface *surf, short x0, short y0, short x1, short y1, unsigned int line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_rect(XSurface* surf, short x, short y, unsigned short w, unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); if (r == 0) {XDrawRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);return;} {short xc = x + r; short yc = y + r; short wc = (short)(w - 2 * r); short hc = (short)(h - 2 * r); XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y); XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+hc); XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h); XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, x, yc+hc); XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, y, (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r, (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);} XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_rect(XSurface* surf, short x, short y, unsigned short w, unsigned short h, unsigned short r, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); if (r == 0) {XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h); return;} {short xc = x + r; short yc = y + r; short wc = (short)(w - 2 * r); short hc = (short)(h - 2 * r); XPoint pnts[12]; pnts[0].x = x; pnts[0].y = yc; pnts[1].x = xc; pnts[1].y = yc; pnts[2].x = xc; pnts[2].y = y; pnts[3].x = xc + wc; pnts[3].y = y; pnts[4].x = xc + wc; pnts[4].y = yc; pnts[5].x = x + w; pnts[5].y = yc; pnts[6].x = x + w; pnts[6].y = yc + hc; pnts[7].x = xc + wc; pnts[7].y = yc + hc; pnts[8].x = xc + wc; pnts[8].y = y + h; pnts[9].x = xc; pnts[9].y = y + h; pnts[10].x = xc; pnts[10].y = yc + hc; pnts[11].x = x; pnts[11].y = yc + hc; XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin); XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, x, y, (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r, (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);} } NK_INTERN void nk_xsurf_fill_triangle(XSurface *surf, short x0, short y0, short x1, short y1, short x2, short y2, struct nk_color col) { XPoint pnts[3]; unsigned long c = nk_color_from_byte(&col.r); pnts[0].x = (short)x0; pnts[0].y = (short)y0; pnts[1].x = (short)x1; pnts[1].y = (short)y1; pnts[2].x = (short)x2; pnts[2].y = (short)y2; XSetForeground(surf->dpy, surf->gc, c); XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin); } NK_INTERN void nk_xsurf_stroke_triangle(XSurface *surf, short x0, short y0, short x1, short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1); XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2); XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count, struct nk_color col) { int i = 0; #define MAX_POINTS 128 XPoint xpnts[MAX_POINTS]; unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); for (i = 0; i < count && i < MAX_POINTS; ++i) { xpnts[i].x = pnts[i].x; xpnts[i].y = pnts[i].y; } XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin); #undef MAX_POINTS } NK_INTERN void nk_xsurf_stroke_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { int i = 0; unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); for (i = 1; i < count; ++i) XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y); XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_polyline(XSurface *surf, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { int i = 0; unsigned long c = nk_color_from_byte(&col.r); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XSetForeground(surf->dpy, surf->gc, c); for (i = 0; i < count-1; ++i) XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w, unsigned short h, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h, 0, 360 * 64); } NK_INTERN void nk_xsurf_stroke_circle(XSurface *surf, short x, short y, unsigned short w, unsigned short h, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XSetForeground(surf->dpy, surf->gc, c); XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h, 0, 360 * 64); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_curve(XSurface *surf, struct nk_vec2i p1, struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4, unsigned int num_segments, unsigned short line_thickness, struct nk_color col) { unsigned int i_step; float t_step; struct nk_vec2i last = p1; XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); num_segments = NK_MAX(num_segments, 1); t_step = 1.0f/(float)num_segments; for (i_step = 1; i_step <= num_segments; ++i_step) { float t = t_step * (float)i_step; float u = 1.0f - t; float w1 = u*u*u; float w2 = 3*u*u*t; float w3 = 3*u*t*t; float w4 = t * t *t; float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; nk_xsurf_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col); last.x = (short)x; last.y = (short)y; } XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_draw_text(XSurface *surf, short x, short y, unsigned short w, unsigned short h, const char *text, int len, XFont *font, struct nk_color cbg, struct nk_color cfg) { int tx, ty; unsigned long bg = nk_color_from_byte(&cbg.r); unsigned long fg = nk_color_from_byte(&cfg.r); XSetForeground(surf->dpy, surf->gc, bg); XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h); if(!text || !font || !len) return; tx = (int)x; ty = (int)y + font->ascent; XSetForeground(surf->dpy, surf->gc, fg); if(font->set) XmbDrawString(surf->dpy,surf->drawable,font->set,surf->gc,tx,ty,(const char*)text,(int)len); else XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len); } #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_INTERN struct nk_image nk_stbi_image_to_xsurf(unsigned char *data, int width, int height, int channels) { XSurface *surf = xlib.surf; struct nk_image img; int bpl = channels; long i, isize = width*height*channels; XImageWithAlpha *aimage = (XImageWithAlpha*)calloc( 1, sizeof(XImageWithAlpha) ); int depth = DefaultDepth(surf->dpy, surf->screen); if (data == NULL) return nk_image_id(0); if (aimage == NULL) return nk_image_id(0); switch (depth){ case 24: bpl = 4; break; case 16: case 15: bpl = 2; break; default: bpl = 1; break; } /* rgba to bgra */ if (channels >= 3){ for (i=0; i < isize; i += channels) { unsigned char red = data[i+2]; unsigned char blue = data[i]; data[i] = red; data[i+2] = blue; } } if (channels == 4){ const unsigned alpha_treshold = 127; aimage->clipMask = XCreatePixmap(surf->dpy, surf->drawable, width, height, 1); if( aimage->clipMask ){ aimage->clipMaskGC = XCreateGC(surf->dpy, aimage->clipMask, 0, 0); XSetForeground(surf->dpy, aimage->clipMaskGC, BlackPixel(surf->dpy, surf->screen)); XFillRectangle(surf->dpy, aimage->clipMask, aimage->clipMaskGC, 0, 0, width, height); XSetForeground(surf->dpy, aimage->clipMaskGC, WhitePixel(surf->dpy, surf->screen)); for (i=0; i < isize; i += channels){ unsigned char alpha = data[i+3]; int div = i / channels; int x = div % width; int y = div / width; if( alpha > alpha_treshold ) XDrawPoint(surf->dpy, aimage->clipMask, aimage->clipMaskGC, x, y); } } } aimage->ximage = XCreateImage(surf->dpy, CopyFromParent, depth, ZPixmap, 0, (char*)data, width, height, bpl*8, bpl * width); img = nk_image_ptr( (void*)aimage); img.h = height; img.w = width; return img; } NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize) { int x,y,n; unsigned char *data; data = stbi_load_from_memory(membuf, membufSize, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename) { int x,y,n; unsigned char *data; data = stbi_load(filename, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } #endif /* NK_XLIB_INCLUDE_STB_IMAGE */ NK_INTERN void nk_xsurf_draw_image(XSurface *surf, short x, short y, unsigned short w, unsigned short h, struct nk_image img, struct nk_color col) { XImageWithAlpha *aimage = img.handle.ptr; if (aimage){ if (aimage->clipMask){ XSetClipMask(surf->dpy, surf->gc, aimage->clipMask); XSetClipOrigin(surf->dpy, surf->gc, x, y); } XPutImage(surf->dpy, surf->drawable, surf->gc, aimage->ximage, 0, 0, x, y, w, h); XSetClipMask(surf->dpy, surf->gc, None); } } void nk_xsurf_image_free(struct nk_image* image) { XSurface *surf = xlib.surf; XImageWithAlpha *aimage = image->handle.ptr; if (!aimage) return; XDestroyImage(aimage->ximage); XFreePixmap(surf->dpy, aimage->clipMask); XFreeGC(surf->dpy, aimage->clipMaskGC); free(aimage); } NK_INTERN void nk_xsurf_clear(XSurface *surf, unsigned long color) { XSetForeground(surf->dpy, surf->gc, color); XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h); } NK_INTERN void nk_xsurf_blit(Drawable target, XSurface *surf, unsigned int w, unsigned int h) { XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, w, h, 0, 0); } NK_INTERN void nk_xsurf_del(XSurface *surf) { XFreePixmap(surf->dpy, surf->drawable); XFreeGC(surf->dpy, surf->gc); free(surf); } NK_API XFont* nk_xfont_create(Display *dpy, const char *name) { int n; char *def, **missing; XFont *font = (XFont*)calloc(1, sizeof(XFont)); font->set = XCreateFontSet(dpy, name, &missing, &n, &def); if(missing) { while(n--) fprintf(stderr, "missing fontset: %s\n", missing[n]); XFreeStringList(missing); } if(font->set) { XFontStruct **xfonts; char **font_names; XExtentsOfFontSet(font->set); n = XFontsOfFontSet(font->set, &xfonts, &font_names); while(n--) { font->ascent = NK_MAX(font->ascent, (*xfonts)->ascent); font->descent = NK_MAX(font->descent,(*xfonts)->descent); xfonts++; } } else { if(!(font->xfont = XLoadQueryFont(dpy, name)) && !(font->xfont = XLoadQueryFont(dpy, "fixed"))) { free(font); return 0; } font->ascent = font->xfont->ascent; font->descent = font->xfont->descent; } font->height = font->ascent + font->descent; return font; } NK_INTERN float nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len) { XFont *font = (XFont*)handle.ptr; XRectangle r; if(!font || !text) return 0; if(font->set) { XmbTextExtents(font->set, (const char*)text, len, NULL, &r); return (float)r.width; } else{ int w = XTextWidth(font->xfont, (const char*)text, len); return (float)w; } } NK_API void nk_xfont_del(Display *dpy, XFont *font) { if(!font) return; if(font->set) XFreeFontSet(dpy, font->set); else XFreeFont(dpy, font->xfont); free(font); } NK_API struct nk_context* nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root, unsigned int w, unsigned int h) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; xlib.dpy = dpy; xlib.root = root; if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; xlib.xa_clipboard = XInternAtom(dpy, "CLIPBOARD", False); xlib.xa_targets = XInternAtom(dpy, "TARGETS", False); xlib.xa_text = XInternAtom(dpy, "TEXT", False); xlib.xa_utf8_string = XInternAtom(dpy, "UTF8_STRING", False); /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1); if (blank == None) return 0; xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} xlib.surf = nk_xsurf_create(screen, w, h); nk_init_default(&xlib.ctx, font); return &xlib.ctx; } NK_API void nk_xlib_set_font(XFont *xfont) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; nk_style_set_font(&xlib.ctx, font); } NK_API void nk_xlib_push_font(XFont *xfont) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; nk_style_push_font(&xlib.ctx, font); } NK_API void nk_xlib_paste(nk_handle handle, struct nk_text_edit* edit) { NK_UNUSED(handle); /* Paste in X is asynchronous, so can not use a temporary text edit */ NK_ASSERT(edit != &xlib.ctx.text_edit && "Paste not supported for temporary editors"); xlib.clipboard_target = edit; /* Request the contents of the primary buffer */ XConvertSelection(xlib.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xlib.root, CurrentTime); } NK_API void nk_xlib_copy(nk_handle handle, const char* str, int len) { NK_UNUSED(handle); free(xlib.clipboard_data); xlib.clipboard_len = 0; xlib.clipboard_data = malloc((size_t)len); if (xlib.clipboard_data) { memcpy(xlib.clipboard_data, str, (size_t)len); xlib.clipboard_len = len; XSetSelectionOwner(xlib.dpy, XA_PRIMARY, xlib.root, CurrentTime); XSetSelectionOwner(xlib.dpy, xlib.xa_clipboard, xlib.root, CurrentTime); } } NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt) { struct nk_context *ctx = &xlib.ctx; /* optional grabbing behavior */ if (ctx->input.mouse.grab) { XDefineCursor(xlib.dpy, xlib.root, xlib.cursor); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0, (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y); XUndefineCursor(xlib.dpy, xlib.root); ctx->input.mouse.ungrab = 0; } if (evt->type == KeyPress || evt->type == KeyRelease) { /* Key handler */ int ret, down = (evt->type == KeyPress); KeySym *code = XGetKeyboardMapping(xlib.surf->dpy, (KeyCode)evt->xkey.keycode, 1, &ret); if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, down); else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down); else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down); else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_Escape) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down); else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else { if (*code == 'c' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_COPY, down); else if (*code == 'v' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_PASTE, down); else if (*code == 'x' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_CUT, down); else if (*code == 'z' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down); else if (*code == 'r' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_REDO, down); else if (*code == XK_Left && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else if (*code == XK_Right && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else if (*code == 'b' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down); else if (*code == 'e' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down); else { if (*code == 'i') nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(ctx, buf); } } } XFree(code); return 1; } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { /* Button handler */ int down = (evt->type == ButtonPress); const int x = evt->xbutton.x, y = evt->xbutton.y; if (evt->xbutton.button == Button1) { if (down) { /* Double-Click Button handler */ long dt = nk_timestamp() - xlib.last_button_click; if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); xlib.last_button_click = nk_timestamp(); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->xbutton.button == Button2) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->xbutton.button == Button3) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else if (evt->xbutton.button == Button4) nk_input_scroll(ctx, nk_vec2(0, 1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(ctx, nk_vec2(0, -1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(ctx, x, y); if (ctx->input.mouse.grabbed) { ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; XWarpPointer(xlib.dpy, None, xlib.surf->root, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); } return 1; } else if (evt->type == Expose || evt->type == ConfigureNotify) { /* Window resize handler */ unsigned int width, height; XWindowAttributes attr; XGetWindowAttributes(dpy, win, &attr); width = (unsigned int)attr.width; height = (unsigned int)attr.height; nk_xsurf_resize(xlib.surf, width, height); return 1; } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } else if (evt->type == SelectionClear) { free(xlib.clipboard_data); xlib.clipboard_data = NULL; xlib.clipboard_len = 0; return 1; } else if (evt->type == SelectionRequest) { XEvent reply; reply.xselection.type = SelectionNotify; reply.xselection.requestor = evt->xselectionrequest.requestor; reply.xselection.selection = evt->xselectionrequest.selection; reply.xselection.target = evt->xselectionrequest.target; reply.xselection.property = None; /* Default refuse */ reply.xselection.time = evt->xselectionrequest.time; if (reply.xselection.target == xlib.xa_targets) { Atom target_list[4]; target_list[0] = xlib.xa_targets; target_list[1] = xlib.xa_text; target_list[2] = xlib.xa_utf8_string; target_list[3] = XA_STRING; reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, XA_ATOM, 32, PropModeReplace, (unsigned char*)&target_list, 4); } else if (xlib.clipboard_data && (reply.xselection.target == xlib.xa_text || reply.xselection.target == xlib.xa_utf8_string || reply.xselection.target == XA_STRING)) { reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, reply.xselection.target, 8, PropModeReplace, (unsigned char*)xlib.clipboard_data, xlib.clipboard_len); } XSendEvent(evt->xselection.display, evt->xselectionrequest.requestor, True, 0, &reply); XFlush(evt->xselection.display); return 1; } else if (evt->type == SelectionNotify && xlib.clipboard_target) { if ((evt->xselection.target != XA_STRING) && (evt->xselection.target != xlib.xa_utf8_string) && (evt->xselection.target != xlib.xa_text)) return 1; {Atom actual_type; int actual_format; unsigned long pos = 0, len, remain; unsigned char* data = 0; do { XGetWindowProperty(dpy, win, XA_PRIMARY, (int)pos, 1024, False, AnyPropertyType, &actual_type, &actual_format, &len, &remain, &data); if (len && data) nk_textedit_text(xlib.clipboard_target, (char*)data, (int)len); if (data != 0) XFree(data); pos += (len * (unsigned long)actual_format) / 32; } while (remain != 0);} return 1; } return 0; } NK_API void nk_xlib_shutdown(void) { nk_xsurf_del(xlib.surf); nk_free(&xlib.ctx); XFreeCursor(xlib.dpy, xlib.cursor); NK_MEMSET(&xlib, 0, sizeof(xlib)); } NK_API void nk_xlib_render(Drawable screen, struct nk_color clear) { const struct nk_command *cmd; struct nk_context *ctx = &xlib.ctx; XSurface *surf = xlib.surf; nk_xsurf_clear(xlib.surf, nk_color_from_byte(&clear.r)); nk_foreach(cmd, &xlib.ctx) { switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; nk_xsurf_scissor(surf, s->x, s->y, s->w, s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; nk_xsurf_stroke_line(surf, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; nk_xsurf_stroke_rect(surf, r->x, r->y, NK_MAX(r->w -r->line_thickness, 0), NK_MAX(r->h - r->line_thickness, 0), (unsigned short)r->rounding, r->line_thickness, r->color); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; nk_xsurf_fill_rect(surf, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; nk_xsurf_stroke_circle(surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_xsurf_fill_circle(surf, c->x, c->y, c->w, c->h, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; nk_xsurf_stroke_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; nk_xsurf_fill_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; nk_xsurf_stroke_polygon(surf, p->points, p->point_count, p->line_thickness,p->color); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; nk_xsurf_fill_polygon(surf, p->points, p->point_count, p->color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; nk_xsurf_stroke_polyline(surf, p->points, p->point_count, p->line_thickness, p->color); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_xsurf_draw_text(surf, t->x, t->y, t->w, t->h, (const char*)t->string, t->length, (XFont*)t->font->userdata.ptr, t->background, t->foreground); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; nk_xsurf_stroke_curve(surf, q->begin, q->ctrl[0], q->ctrl[1], q->end, 22, q->line_thickness, q->color); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image *)cmd; nk_xsurf_draw_image(surf, i->x, i->y, i->w, i->h, i->img, i->col); } break; case NK_COMMAND_RECT_MULTI_COLOR: case NK_COMMAND_ARC: case NK_COMMAND_ARC_FILLED: case NK_COMMAND_CUSTOM: default: break; } } nk_clear(ctx); nk_xsurf_blit(screen, surf, surf->w, surf->h); } #endif ================================================ FILE: demo/x11_opengl2/Makefile ================================================ # Install BIN = demo # Compiler CC = clang DCC = gcc # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) # Modes .PHONY: gcc gcc: CC = gcc gcc: $(BIN) .PHONY: clang clang: CC = clang clang: $(BIN) $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) -lX11 -lm -lGL -lm -lGLU ================================================ FILE: demo/x11_opengl2/main.c ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_XLIB_GL2_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_xlib_gl2.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_ELEMENT_BUFFER 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ struct XWindow { Display *dpy; Window win; XVisualInfo *vis; Colormap cmap; XSetWindowAttributes swa; XWindowAttributes attr; GLXFBConfig fbc; Atom wm_delete_window; int width, height; }; static int gl_err = nk_false; static int gl_error_handler(Display *dpy, XErrorEvent *ev) {NK_UNUSED(dpy); NK_UNUSED(ev); gl_err = nk_true; return 0;} static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static int has_extension(const char *string, const char *ext) { const char *start, *where, *term; where = strchr(ext, ' '); if (where || *ext == '\0') return nk_false; for (start = string;;) { where = strstr((const char*)start, ext); if (!where) break; term = where + strlen(ext); if (where == start || *(where - 1) == ' ') { if (*term == ' ' || *term == '\0') return nk_true; } start = term; } return nk_false; } int main(void) { /* Platform */ int running = 1; struct XWindow win; GLXContext glContext; struct nk_context *ctx; struct nk_colorf bg; memset(&win, 0, sizeof(win)); win.dpy = XOpenDisplay(NULL); if (!win.dpy) die("Failed to open X display\n"); { /* check glx version */ int glx_major, glx_minor; if (!glXQueryVersion(win.dpy, &glx_major, &glx_minor)) die("[X11]: Error: Failed to query OpenGL version\n"); if ((glx_major == 1 && glx_minor < 3) || (glx_major < 1)) die("[X11]: Error: Invalid GLX version!\n"); } { /* find and pick matching framebuffer visual */ int fb_count; static GLint attr[] = { GLX_X_RENDERABLE, True, GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, GLX_RENDER_TYPE, GLX_RGBA_BIT, GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR, GLX_RED_SIZE, 8, GLX_GREEN_SIZE, 8, GLX_BLUE_SIZE, 8, GLX_ALPHA_SIZE, 8, GLX_DEPTH_SIZE, 24, GLX_STENCIL_SIZE, 8, GLX_DOUBLEBUFFER, True, None }; GLXFBConfig *fbc; fbc = glXChooseFBConfig(win.dpy, DefaultScreen(win.dpy), attr, &fb_count); if (!fbc) die("[X11]: Error: failed to retrieve framebuffer configuration\n"); { /* pick framebuffer with most samples per pixel */ int i; int fb_best = -1, best_num_samples = -1; for (i = 0; i < fb_count; ++i) { XVisualInfo *vi = glXGetVisualFromFBConfig(win.dpy, fbc[i]); if (vi) { int sample_buffer, samples; glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLE_BUFFERS, &sample_buffer); glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLES, &samples); if ((fb_best < 0) || (sample_buffer && samples > best_num_samples)) fb_best = i, best_num_samples = samples; } } win.fbc = fbc[fb_best]; XFree(fbc); win.vis = glXGetVisualFromFBConfig(win.dpy, win.fbc); } } { /* create window */ win.cmap = XCreateColormap(win.dpy, RootWindow(win.dpy, win.vis->screen), win.vis->visual, AllocNone); win.swa.colormap = win.cmap; win.swa.background_pixmap = None; win.swa.border_pixel = 0; win.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask| StructureNotifyMask; win.win = XCreateWindow(win.dpy, RootWindow(win.dpy, win.vis->screen), 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, win.vis->depth, InputOutput, win.vis->visual, CWBorderPixel|CWColormap|CWEventMask, &win.swa); if (!win.win) die("[X11]: Failed to create window\n"); XFree(win.vis); XStoreName(win.dpy, win.win, "Demo"); XMapWindow(win.dpy, win.win); win.wm_delete_window = XInternAtom(win.dpy, "WM_DELETE_WINDOW", False); XSetWMProtocols(win.dpy, win.win, &win.wm_delete_window, 1); } { /* create opengl context */ typedef GLXContext(*glxCreateContext)(Display*, GLXFBConfig, GLXContext, Bool, const int*); int(*old_handler)(Display*, XErrorEvent*) = XSetErrorHandler(gl_error_handler); const char *extensions_str = glXQueryExtensionsString(win.dpy, DefaultScreen(win.dpy)); glxCreateContext create_context = (glxCreateContext) glXGetProcAddressARB((const GLubyte*)"glXCreateContextAttribsARB"); gl_err = nk_false; if (!has_extension(extensions_str, "GLX_ARB_create_context") || !create_context) { fprintf(stdout, "[X11]: glXCreateContextAttribARB() not found...\n"); fprintf(stdout, "[X11]: ... using old-style GLX context\n"); glContext = glXCreateNewContext(win.dpy, win.fbc, GLX_RGBA_TYPE, 0, True); } else { GLint attr[] = { GLX_CONTEXT_MAJOR_VERSION_ARB, 2, GLX_CONTEXT_MINOR_VERSION_ARB, 2, None }; glContext = create_context(win.dpy, win.fbc, 0, True, attr); XSync(win.dpy, False); if (gl_err || !glContext) { /* Could not create GL 3.0 context. Fallback to old 2.x context. * If a version below 3.0 is requested, implementations will * return the newest context version compatible with OpenGL * version less than version 3.0.*/ attr[1] = 1; attr[3] = 0; gl_err = nk_false; fprintf(stdout, "[X11] Failed to create OpenGL 3.0 context\n"); fprintf(stdout, "[X11] ... using old-style GLX context!\n"); glContext = create_context(win.dpy, win.fbc, 0, True, attr); } } XSync(win.dpy, False); XSetErrorHandler(old_handler); if (gl_err || !glContext) die("[X11]: Failed to create an OpenGL context\n"); glXMakeCurrent(win.dpy, win.win, glContext); } ctx = nk_x11_init(win.dpy, win.win); /* Load Fonts: if none of these are loaded a default font will be used */ /* Load Cursor: if you uncomment cursor loading please hide the cursor */ {struct nk_font_atlas *atlas; nk_x11_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_x11_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ XEvent evt; nk_input_begin(ctx); while (XPending(win.dpy)) { XNextEvent(win.dpy, &evt); if (evt.type == ClientMessage) goto cleanup; if (XFilterEvent(&evt, win.win)) continue; nk_x11_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ XGetWindowAttributes(win.dpy, win.win, &win.attr); glViewport(0, 0, win.width, win.height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_x11_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_x11_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); glXSwapBuffers(win.dpy, win.win); } cleanup: nk_x11_shutdown(); glXMakeCurrent(win.dpy, 0, 0); glXDestroyContext(win.dpy, glContext); XUnmapWindow(win.dpy, win.win); XFreeColormap(win.dpy, win.cmap); XDestroyWindow(win.dpy, win.win); XCloseDisplay(win.dpy); return 0; } ================================================ FILE: demo/x11_opengl2/nuklear_xlib_gl2.h ================================================ /* * Nuklear - 1.32.0 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIB_GL2_H_ #define NK_XLIB_GL2_H_ #include NK_API struct nk_context* nk_x11_init(Display *dpy, Window win); NK_API void nk_x11_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_x11_font_stash_end(void); NK_API int nk_x11_handle_event(XEvent *evt); NK_API void nk_x11_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); NK_API void nk_x11_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIB_GL2_IMPLEMENTATION #include #include #include #include #include #include #include #include #include #include #include #ifndef NK_X11_DOUBLE_CLICK_LO #define NK_X11_DOUBLE_CLICK_LO 20 #endif #ifndef NK_X11_DOUBLE_CLICK_HI #define NK_X11_DOUBLE_CLICK_HI 200 #endif struct nk_x11_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct nk_x11_device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint font_tex; }; static struct nk_x11 { struct nk_x11_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; Cursor cursor; Display *dpy; Window win; long last_button_click; } x11; NK_INTERN long nk_timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } NK_INTERN void nk_x11_device_upload_atlas(const void *image, int width, int height) { struct nk_x11_device *dev = &x11.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_x11_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { /* setup global state */ struct nk_x11_device *dev = &x11.ogl; int width, height; XWindowAttributes attr; XGetWindowAttributes(x11.dpy, x11.win, &attr); width = attr.width; height = attr.height; glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glEnable(GL_BLEND); glEnable(GL_TEXTURE_2D); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); /* setup viewport/project */ glViewport(0,0,(GLsizei)width,(GLsizei)height); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_COLOR_ARRAY); { GLsizei vs = sizeof(struct nk_x11_vertex); size_t vp = offsetof(struct nk_x11_vertex, position); size_t vt = offsetof(struct nk_x11_vertex, uv); size_t vc = offsetof(struct nk_x11_vertex, col); /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; const nk_draw_index *offset = NULL; struct nk_buffer vbuf, ebuf; /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_x11_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_x11_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_x11_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_x11_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_x11_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* convert shapes into vertexes */ nk_buffer_init_default(&vbuf); nk_buffer_init_default(&ebuf); nk_convert(&x11.ctx, &dev->cmds, &vbuf, &ebuf, &config); /* setup vertex buffer pointer */ {const void *vertices = nk_buffer_memory_const(&vbuf); glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp)); glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt)); glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));} /* iterate over and execute each draw command */ offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf); nk_draw_foreach(cmd, &x11.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), (GLint)(cmd->clip_rect.w), (GLint)(cmd->clip_rect.h)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&x11.ctx); nk_buffer_free(&vbuf); nk_buffer_free(&ebuf); } /* default OpenGL state */ glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glDisable(GL_SCISSOR_TEST); glDisable(GL_BLEND); glDisable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, 0); glMatrixMode(GL_MODELVIEW); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); glPopAttrib(); } NK_API void nk_x11_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&x11.atlas); nk_font_atlas_begin(&x11.atlas); *atlas = &x11.atlas; } NK_API void nk_x11_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&x11.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_x11_device_upload_atlas(image, w, h); nk_font_atlas_end(&x11.atlas, nk_handle_id((int)x11.ogl.font_tex), &x11.ogl.null); if (x11.atlas.default_font) nk_style_set_font(&x11.ctx, &x11.atlas.default_font->handle); } NK_API int nk_x11_handle_event(XEvent *evt) { struct nk_context *ctx = &x11.ctx; /* optional grabbing behavior */ if (ctx->input.mouse.grab) { XDefineCursor(x11.dpy, x11.win, x11.cursor); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { XWarpPointer(x11.dpy, None, x11.win, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); XUndefineCursor(x11.dpy, x11.win); ctx->input.mouse.ungrab = 0; } if (evt->type == KeyPress || evt->type == KeyRelease) { /* Key handler */ int ret, down = (evt->type == KeyPress); KeySym *code = XGetKeyboardMapping(x11.dpy, (KeyCode)evt->xkey.keycode, 1, &ret); if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, down); else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down); else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down); else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_space && !down) nk_input_char(ctx, ' '); else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else { if (*code == 'c' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_COPY, down); else if (*code == 'v' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_PASTE, down); else if (*code == 'x' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_CUT, down); else if (*code == 'z' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down); else if (*code == 'r' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_REDO, down); else if (*code == XK_Left && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else if (*code == XK_Right && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else if (*code == 'b' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down); else if (*code == 'e' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down); else { if (*code == 'i') nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(ctx, buf); } } } XFree(code); return 1; } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { /* Button handler */ int down = (evt->type == ButtonPress); const int x = evt->xbutton.x, y = evt->xbutton.y; if (evt->xbutton.button == Button1) { if (down) { /* Double-Click Button handler */ long dt = nk_timestamp() - x11.last_button_click; if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); x11.last_button_click = nk_timestamp(); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->xbutton.button == Button2) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->xbutton.button == Button3) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else if (evt->xbutton.button == Button4) nk_input_scroll(ctx, nk_vec2(0,1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(ctx, nk_vec2(0,-1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(ctx, x, y); if (ctx->input.mouse.grabbed) { ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; XWarpPointer(x11.dpy, None, x11.win, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); } return 1; } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } return 0; } NK_API struct nk_context* nk_x11_init(Display *dpy, Window win) { x11.dpy = dpy; x11.win = win; if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, win, data, 1, 1); if (blank == None) return 0; x11.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} nk_buffer_init_default(&x11.ogl.cmds); nk_init_default(&x11.ctx, 0); return &x11.ctx; } NK_API void nk_x11_shutdown(void) { struct nk_x11_device *dev = &x11.ogl; nk_font_atlas_clear(&x11.atlas); nk_free(&x11.ctx); glDeleteTextures(1, &dev->font_tex); nk_buffer_free(&dev->cmds); XFreeCursor(x11.dpy, x11.cursor); memset(&x11, 0, sizeof(x11)); } #endif ================================================ FILE: demo/x11_opengl3/Makefile ================================================ # Install BIN = demo # Compiler CC = clang DCC = gcc # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) # Modes .PHONY: gcc gcc: CC = gcc gcc: $(BIN) .PHONY: clang clang: CC = clang clang: $(BIN) $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) -lX11 -lm -lGL -lm -lGLU ================================================ FILE: demo/x11_opengl3/main.c ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #define NK_XLIB_GL3_IMPLEMENTATION #define NK_XLIB_LOAD_OPENGL_EXTENSIONS #include "../../nuklear.h" #include "nuklear_xlib_gl3.h" #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_BUFFER 512 * 1024 #define MAX_ELEMENT_BUFFER 128 * 1024 /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ struct XWindow { Display *dpy; Window win; XVisualInfo *vis; Colormap cmap; XSetWindowAttributes swa; XWindowAttributes attr; GLXFBConfig fbc; Atom wm_delete_window; int width, height; }; static int gl_err = nk_false; static int gl_error_handler(Display *dpy, XErrorEvent *ev) {NK_UNUSED(dpy); NK_UNUSED(ev); gl_err = nk_true;return 0;} static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static int has_extension(const char *string, const char *ext) { const char *start, *where, *term; where = strchr(ext, ' '); if (where || *ext == '\0') return nk_false; for (start = string;;) { where = strstr((const char*)start, ext); if (!where) break; term = where + strlen(ext); if (where == start || *(where - 1) == ' ') { if (*term == ' ' || *term == '\0') return nk_true; } start = term; } return nk_false; } int main(void) { /* Platform */ int running = 1; struct XWindow win; GLXContext glContext; struct nk_context *ctx; struct nk_colorf bg; memset(&win, 0, sizeof(win)); win.dpy = XOpenDisplay(NULL); if (!win.dpy) die("Failed to open X display\n"); { /* check glx version */ int glx_major, glx_minor; if (!glXQueryVersion(win.dpy, &glx_major, &glx_minor)) die("[X11]: Error: Failed to query OpenGL version\n"); if ((glx_major == 1 && glx_minor < 3) || (glx_major < 1)) die("[X11]: Error: Invalid GLX version!\n"); } { /* find and pick matching framebuffer visual */ int fb_count; static GLint attr[] = { GLX_X_RENDERABLE, True, GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, GLX_RENDER_TYPE, GLX_RGBA_BIT, GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR, GLX_RED_SIZE, 8, GLX_GREEN_SIZE, 8, GLX_BLUE_SIZE, 8, GLX_ALPHA_SIZE, 8, GLX_DEPTH_SIZE, 24, GLX_STENCIL_SIZE, 8, GLX_DOUBLEBUFFER, True, None }; GLXFBConfig *fbc; fbc = glXChooseFBConfig(win.dpy, DefaultScreen(win.dpy), attr, &fb_count); if (!fbc) die("[X11]: Error: failed to retrieve framebuffer configuration\n"); { /* pick framebuffer with most samples per pixel */ int i; int fb_best = -1, best_num_samples = -1; for (i = 0; i < fb_count; ++i) { XVisualInfo *vi = glXGetVisualFromFBConfig(win.dpy, fbc[i]); if (vi) { int sample_buffer, samples; glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLE_BUFFERS, &sample_buffer); glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLES, &samples); if ((fb_best < 0) || (sample_buffer && samples > best_num_samples)) fb_best = i, best_num_samples = samples; } } win.fbc = fbc[fb_best]; XFree(fbc); win.vis = glXGetVisualFromFBConfig(win.dpy, win.fbc); } } { /* create window */ win.cmap = XCreateColormap(win.dpy, RootWindow(win.dpy, win.vis->screen), win.vis->visual, AllocNone); win.swa.colormap = win.cmap; win.swa.background_pixmap = None; win.swa.border_pixel = 0; win.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask| StructureNotifyMask; win.win = XCreateWindow(win.dpy, RootWindow(win.dpy, win.vis->screen), 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, win.vis->depth, InputOutput, win.vis->visual, CWBorderPixel|CWColormap|CWEventMask, &win.swa); if (!win.win) die("[X11]: Failed to create window\n"); XFree(win.vis); XStoreName(win.dpy, win.win, "Demo"); XMapWindow(win.dpy, win.win); win.wm_delete_window = XInternAtom(win.dpy, "WM_DELETE_WINDOW", False); XSetWMProtocols(win.dpy, win.win, &win.wm_delete_window, 1); } { /* create opengl context */ typedef GLXContext(*glxCreateContext)(Display*, GLXFBConfig, GLXContext, Bool, const int*); int(*old_handler)(Display*, XErrorEvent*) = XSetErrorHandler(gl_error_handler); const char *extensions_str = glXQueryExtensionsString(win.dpy, DefaultScreen(win.dpy)); glxCreateContext create_context = (glxCreateContext) glXGetProcAddressARB((const GLubyte*)"glXCreateContextAttribsARB"); gl_err = nk_false; if (!has_extension(extensions_str, "GLX_ARB_create_context") || !create_context) { fprintf(stdout, "[X11]: glXCreateContextAttribARB() not found...\n"); fprintf(stdout, "[X11]: ... using old-style GLX context\n"); glContext = glXCreateNewContext(win.dpy, win.fbc, GLX_RGBA_TYPE, 0, True); } else { GLint attr[] = { GLX_CONTEXT_MAJOR_VERSION_ARB, 3, GLX_CONTEXT_MINOR_VERSION_ARB, 0, None }; glContext = create_context(win.dpy, win.fbc, 0, True, attr); XSync(win.dpy, False); if (gl_err || !glContext) { /* Could not create GL 3.0 context. Fallback to old 2.x context. * If a version below 3.0 is requested, implementations will * return the newest context version compatible with OpenGL * version less than version 3.0.*/ attr[1] = 1; attr[3] = 0; gl_err = nk_false; fprintf(stdout, "[X11] Failed to create OpenGL 3.0 context\n"); fprintf(stdout, "[X11] ... using old-style GLX context!\n"); glContext = create_context(win.dpy, win.fbc, 0, True, attr); } } XSync(win.dpy, False); XSetErrorHandler(old_handler); if (gl_err || !glContext) die("[X11]: Failed to create an OpenGL context\n"); glXMakeCurrent(win.dpy, win.win, glContext); } ctx = nk_x11_init(win.dpy, win.win); /* Load Fonts: if none of these are loaded a default font will be used */ {struct nk_font_atlas *atlas; nk_x11_font_stash_begin(&atlas); /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ /*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/ /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/ /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/ /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/ /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/ nk_x11_font_stash_end(); /*nk_style_load_all_cursors(ctx, atlas->cursors);*/ /*nk_style_set_font(ctx, &droid->handle);*/} #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f; while (running) { /* Input */ XEvent evt; nk_input_begin(ctx); while (XPending(win.dpy)) { XNextEvent(win.dpy, &evt); if (evt.type == ClientMessage) goto cleanup; if (XFilterEvent(&evt, win.win)) continue; nk_x11_handle_event(&evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, "background:", NK_TEXT_LEFT); nk_layout_row_dynamic(ctx, 25, 1); if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) { nk_layout_row_dynamic(ctx, 120, 1); bg = nk_color_picker(ctx, bg, NK_RGBA); nk_layout_row_dynamic(ctx, 25, 1); bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f); bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f); bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f); bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f); nk_combo_end(ctx); } } nk_end(ctx); /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ XGetWindowAttributes(win.dpy, win.win, &win.attr); glViewport(0, 0, win.width, win.height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(bg.r, bg.g, bg.b, bg.a); /* IMPORTANT: `nk_x11_render` modifies some global OpenGL state * with blending, scissor, face culling, depth test and viewport and * defaults everything back into a default state. * Make sure to either a.) save and restore or b.) reset your own state after * rendering the UI. */ nk_x11_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); glXSwapBuffers(win.dpy, win.win); } cleanup: nk_x11_shutdown(); glXMakeCurrent(win.dpy, 0, 0); glXDestroyContext(win.dpy, glContext); XUnmapWindow(win.dpy, win.win); XFreeColormap(win.dpy, win.cmap); XDestroyWindow(win.dpy, win.win); XCloseDisplay(win.dpy); return 0; } ================================================ FILE: demo/x11_opengl3/nuklear_xlib_gl3.h ================================================ /* * Nuklear - v1.17 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2016 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIB_GL3_H_ #define NK_XLIB_GL3_H_ #include NK_API struct nk_context* nk_x11_init(Display *dpy, Window win); NK_API void nk_x11_font_stash_begin(struct nk_font_atlas **atlas); NK_API void nk_x11_font_stash_end(void); NK_API int nk_x11_handle_event(XEvent *evt); NK_API void nk_x11_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); NK_API void nk_x11_shutdown(void); NK_API int nk_x11_device_create(void); NK_API void nk_x11_device_destroy(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIB_GL3_IMPLEMENTATION #include #include #include #include #include #include #include #include #include #include #include #include #ifndef NK_X11_DOUBLE_CLICK_LO #define NK_X11_DOUBLE_CLICK_LO 20 #endif #ifndef NK_X11_DOUBLE_CLICK_HI #define NK_X11_DOUBLE_CLICK_HI 200 #endif #ifdef NK_XLIB_LOAD_OPENGL_EXTENSIONS #include /* GL_ARB_vertex_buffer_object */ typedef void(*nkglGenBuffers)(GLsizei, GLuint*); typedef void(*nkglBindBuffer)(GLenum, GLuint); typedef void(*nkglBufferData)(GLenum, GLsizeiptr, const GLvoid*, GLenum); typedef void(*nkglBufferSubData)(GLenum, GLintptr, GLsizeiptr, const GLvoid*); typedef void*(*nkglMapBuffer)(GLenum, GLenum); typedef GLboolean(*nkglUnmapBuffer)(GLenum); typedef void(*nkglDeleteBuffers)(GLsizei, GLuint*); /* GL_ARB_vertex_array_object */ typedef void (*nkglGenVertexArrays)(GLsizei, GLuint*); typedef void (*nkglBindVertexArray)(GLuint); typedef void (*nkglDeleteVertexArrays)(GLsizei, const GLuint*); /* GL_ARB_vertex_program / GL_ARB_fragment_program */ typedef void(*nkglVertexAttribPointer)(GLuint, GLint, GLenum, GLboolean, GLsizei, const GLvoid*); typedef void(*nkglEnableVertexAttribArray)(GLuint); typedef void(*nkglDisableVertexAttribArray)(GLuint); /* GL_ARB_framebuffer_object */ typedef void(*nkglGenerateMipmap)(GLenum target); /* GLSL/OpenGL 2.0 core */ typedef GLuint(*nkglCreateShader)(GLenum); typedef void(*nkglShaderSource)(GLuint, GLsizei, const GLchar**, const GLint*); typedef void(*nkglCompileShader)(GLuint); typedef void(*nkglGetShaderiv)(GLuint, GLenum, GLint*); typedef void(*nkglGetShaderInfoLog)(GLuint, GLsizei, GLsizei*, GLchar*); typedef void(*nkglDeleteShader)(GLuint); typedef GLuint(*nkglCreateProgram)(void); typedef void(*nkglAttachShader)(GLuint, GLuint); typedef void(*nkglDetachShader)(GLuint, GLuint); typedef void(*nkglLinkProgram)(GLuint); typedef void(*nkglUseProgram)(GLuint); typedef void(*nkglGetProgramiv)(GLuint, GLenum, GLint*); typedef void(*nkglGetProgramInfoLog)(GLuint, GLsizei, GLsizei*, GLchar*); typedef void(*nkglDeleteProgram)(GLuint); typedef GLint(*nkglGetUniformLocation)(GLuint, const GLchar*); typedef GLint(*nkglGetAttribLocation)(GLuint, const GLchar*); typedef void(*nkglUniform1i)(GLint, GLint); typedef void(*nkglUniform1f)(GLint, GLfloat); typedef void(*nkglUniformMatrix3fv)(GLint, GLsizei, GLboolean, const GLfloat*); typedef void(*nkglUniformMatrix4fv)(GLint, GLsizei, GLboolean, const GLfloat*); static nkglGenBuffers glGenBuffers; static nkglBindBuffer glBindBuffer; static nkglBufferData glBufferData; static nkglBufferSubData glBufferSubData; static nkglMapBuffer glMapBuffer; static nkglUnmapBuffer glUnmapBuffer; static nkglDeleteBuffers glDeleteBuffers; static nkglGenVertexArrays glGenVertexArrays; static nkglBindVertexArray glBindVertexArray; static nkglDeleteVertexArrays glDeleteVertexArrays; static nkglVertexAttribPointer glVertexAttribPointer; static nkglEnableVertexAttribArray glEnableVertexAttribArray; static nkglDisableVertexAttribArray glDisableVertexAttribArray; static nkglGenerateMipmap glGenerateMipmap; static nkglCreateShader glCreateShader; static nkglShaderSource glShaderSource; static nkglCompileShader glCompileShader; static nkglGetShaderiv glGetShaderiv; static nkglGetShaderInfoLog glGetShaderInfoLog; static nkglDeleteShader glDeleteShader; static nkglCreateProgram glCreateProgram; static nkglAttachShader glAttachShader; static nkglDetachShader glDetachShader; static nkglLinkProgram glLinkProgram; static nkglUseProgram glUseProgram; static nkglGetProgramiv glGetProgramiv; static nkglGetProgramInfoLog glGetProgramInfoLog; static nkglDeleteProgram glDeleteProgram; static nkglGetUniformLocation glGetUniformLocation; static nkglGetAttribLocation glGetAttribLocation; static nkglUniform1i glUniform1i; static nkglUniform1f glUniform1f; static nkglUniformMatrix3fv glUniformMatrix3fv; static nkglUniformMatrix4fv glUniformMatrix4fv; enum graphics_card_vendors { VENDOR_UNKNOWN, VENDOR_NVIDIA, VENDOR_AMD, VENDOR_INTEL }; struct opengl_info { /* info */ const char *vendor_str; const char *version_str; const char *extensions_str; const char *renderer_str; const char *glsl_version_str; enum graphics_card_vendors vendor; /* version */ float version; int major_version; int minor_version; /* extensions */ int glsl_available; int vertex_buffer_obj_available; int vertex_array_obj_available; int map_buffer_range_available; int fragment_program_available; int frame_buffer_object_available; }; #endif struct nk_x11_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct nk_x11_device { #ifdef NK_XLIB_LOAD_OPENGL_EXTENSIONS struct opengl_info info; #endif struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; static struct nk_x11 { struct nk_x11_device ogl; struct nk_context ctx; struct nk_font_atlas atlas; Cursor cursor; Display *dpy; Window win; long last_button_click; } x11; #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif #ifdef NK_XLIB_LOAD_OPENGL_EXTENSIONS #include NK_INTERN long nk_timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } NK_INTERN int nk_x11_stricmpn(const char *a, const char *b, int len) { int i = 0; for (i = 0; i < len && a[i] && b[i]; ++i) if (a[i] != b[i]) return 1; if (i != len) return 1; return 0; } NK_INTERN int nk_x11_check_extension(struct opengl_info *GL, const char *ext) { const char *start, *where, *term; where = strchr(ext, ' '); if (where || *ext == '\0') return nk_false; for (start = GL->extensions_str;;) { where = strstr((const char*)start, ext); if (!where) break; term = where + strlen(ext); if (where == start || *(where - 1) == ' ') { if (*term == ' ' || *term == '\0') return nk_true; } start = term; } return nk_false; } #define GL_EXT(name) (nk##name)nk_gl_ext(#name) NK_INTERN __GLXextFuncPtr nk_gl_ext(const char *name) { __GLXextFuncPtr func; func = glXGetProcAddress((const GLubyte*)name); if (!func) { fprintf(stdout, "[GL]: failed to load extension: %s", name); return NULL; } return func; } NK_INTERN int nk_load_opengl(struct opengl_info *gl) { int failed = nk_false; gl->version_str = (const char*)glGetString(GL_VERSION); glGetIntegerv(GL_MAJOR_VERSION, &gl->major_version); glGetIntegerv(GL_MINOR_VERSION, &gl->minor_version); if (gl->major_version < 2) { fprintf(stderr, "[GL]: Graphics card does not fullfill minimum OpenGL 2.0 support\n"); return 0; } gl->version = (float)gl->major_version + (float)gl->minor_version * 0.1f; gl->renderer_str = (const char*)glGetString(GL_RENDERER); gl->extensions_str = (const char*)glGetString(GL_EXTENSIONS); gl->glsl_version_str = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION); gl->vendor_str = (const char*)glGetString(GL_VENDOR); if (!nk_x11_stricmpn(gl->vendor_str, "ATI", 4) || !nk_x11_stricmpn(gl->vendor_str, "AMD", 4)) gl->vendor = VENDOR_AMD; else if (!nk_x11_stricmpn(gl->vendor_str, "NVIDIA", 6)) gl->vendor = VENDOR_NVIDIA; else if (!nk_x11_stricmpn(gl->vendor_str, "Intel", 5)) gl->vendor = VENDOR_INTEL; else gl->vendor = VENDOR_UNKNOWN; /* Extensions */ gl->glsl_available = (gl->version >= 2.0f); if (gl->glsl_available) { /* GLSL core in OpenGL > 2 */ glCreateShader = GL_EXT(glCreateShader); glShaderSource = GL_EXT(glShaderSource); glCompileShader = GL_EXT(glCompileShader); glGetShaderiv = GL_EXT(glGetShaderiv); glGetShaderInfoLog = GL_EXT(glGetShaderInfoLog); glDeleteShader = GL_EXT(glDeleteShader); glCreateProgram = GL_EXT(glCreateProgram); glAttachShader = GL_EXT(glAttachShader); glDetachShader = GL_EXT(glDetachShader); glLinkProgram = GL_EXT(glLinkProgram); glUseProgram = GL_EXT(glUseProgram); glGetProgramiv = GL_EXT(glGetProgramiv); glGetProgramInfoLog = GL_EXT(glGetProgramInfoLog); glDeleteProgram = GL_EXT(glDeleteProgram); glGetUniformLocation = GL_EXT(glGetUniformLocation); glGetAttribLocation = GL_EXT(glGetAttribLocation); glUniform1i = GL_EXT(glUniform1i); glUniform1f = GL_EXT(glUniform1f); glUniformMatrix3fv = GL_EXT(glUniformMatrix3fv); glUniformMatrix4fv = GL_EXT(glUniformMatrix4fv); } gl->vertex_buffer_obj_available = nk_x11_check_extension(gl, "GL_ARB_vertex_buffer_object"); if (gl->vertex_buffer_obj_available) { /* GL_ARB_vertex_buffer_object */ glGenBuffers = GL_EXT(glGenBuffers); glBindBuffer = GL_EXT(glBindBuffer); glBufferData = GL_EXT(glBufferData); glBufferSubData = GL_EXT(glBufferSubData); glMapBuffer = GL_EXT(glMapBuffer); glUnmapBuffer = GL_EXT(glUnmapBuffer); glDeleteBuffers = GL_EXT(glDeleteBuffers); } gl->fragment_program_available = nk_x11_check_extension(gl, "GL_ARB_fragment_program"); if (gl->fragment_program_available) { /* GL_ARB_vertex_program / GL_ARB_fragment_program */ glVertexAttribPointer = GL_EXT(glVertexAttribPointer); glEnableVertexAttribArray = GL_EXT(glEnableVertexAttribArray); glDisableVertexAttribArray = GL_EXT(glDisableVertexAttribArray); } gl->vertex_array_obj_available = nk_x11_check_extension(gl, "GL_ARB_vertex_array_object"); if (gl->vertex_array_obj_available) { /* GL_ARB_vertex_array_object */ glGenVertexArrays = GL_EXT(glGenVertexArrays); glBindVertexArray = GL_EXT(glBindVertexArray); glDeleteVertexArrays = GL_EXT(glDeleteVertexArrays); } gl->frame_buffer_object_available = nk_x11_check_extension(gl, "GL_ARB_framebuffer_object"); if (gl->frame_buffer_object_available) { /* GL_ARB_framebuffer_object */ glGenerateMipmap = GL_EXT(glGenerateMipmap); } if (!gl->vertex_buffer_obj_available) { fprintf(stdout, "[GL] Error: GL_ARB_vertex_buffer_object is not available!\n"); failed = nk_true; } if (!gl->fragment_program_available) { fprintf(stdout, "[GL] Error: GL_ARB_fragment_program is not available!\n"); failed = nk_true; } if (!gl->vertex_array_obj_available) { fprintf(stdout, "[GL] Error: GL_ARB_vertex_array_object is not available!\n"); failed = nk_true; } if (!gl->frame_buffer_object_available) { fprintf(stdout, "[GL] Error: GL_ARB_framebuffer_object is not available!\n"); failed = nk_true; } return !failed; } #endif NK_API int nk_x11_device_create(void) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; struct nk_x11_device *dev = &x11.ogl; #ifdef NK_XLIB_LOAD_OPENGL_EXTENSIONS if (!nk_load_opengl(&dev->info)) return 0; #endif nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_x11_vertex); size_t vp = offsetof(struct nk_x11_vertex, position); size_t vt = offsetof(struct nk_x11_vertex, uv); size_t vc = offsetof(struct nk_x11_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); return 1; } NK_INTERN void nk_x11_device_upload_atlas(const void *image, int width, int height) { struct nk_x11_device *dev = &x11.ogl; glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } NK_API void nk_x11_device_destroy(void) { struct nk_x11_device *dev = &x11.ogl; glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } NK_API void nk_x11_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) { int width, height; XWindowAttributes attr; struct nk_x11_device *dev = &x11.ogl; GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; XGetWindowAttributes(x11.dpy, x11.win, &attr); width = attr.width; height = attr.height; ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); glViewport(0,0,(GLsizei)width,(GLsizei)height); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; struct nk_buffer vbuf, ebuf; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, max_vertex_buffer, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, max_element_buffer, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_x11_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_x11_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_x11_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_x11_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_x11_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ nk_buffer_init_fixed(&vbuf, vertices, (size_t)max_vertex_buffer); nk_buffer_init_fixed(&ebuf, elements, (size_t)max_element_buffer); nk_convert(&x11.ctx, &dev->cmds, &vbuf, &ebuf, &config); } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, &x11.ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), (GLint)(cmd->clip_rect.w), (GLint)(cmd->clip_rect.h)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(&x11.ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } NK_API void nk_x11_font_stash_begin(struct nk_font_atlas **atlas) { nk_font_atlas_init_default(&x11.atlas); nk_font_atlas_begin(&x11.atlas); *atlas = &x11.atlas; } NK_API void nk_x11_font_stash_end(void) { const void *image; int w, h; image = nk_font_atlas_bake(&x11.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); nk_x11_device_upload_atlas(image, w, h); nk_font_atlas_end(&x11.atlas, nk_handle_id((int)x11.ogl.font_tex), &x11.ogl.null); if (x11.atlas.default_font) nk_style_set_font(&x11.ctx, &x11.atlas.default_font->handle); } NK_API int nk_x11_handle_event(XEvent *evt) { struct nk_context *ctx = &x11.ctx; /* optional grabbing behavior */ if (ctx->input.mouse.grab) { XDefineCursor(x11.dpy, x11.win, x11.cursor); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { XWarpPointer(x11.dpy, None, x11.win, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); XUndefineCursor(x11.dpy, x11.win); ctx->input.mouse.ungrab = 0; } if (evt->type == KeyPress || evt->type == KeyRelease) { /* Key handler */ int ret, down = (evt->type == KeyPress); KeySym *code = XGetKeyboardMapping(x11.dpy, (KeyCode)evt->xkey.keycode, 1, &ret); if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, down); else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down); else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down); else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_space && !down) nk_input_char(ctx, ' '); else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else { if (*code == 'c' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_COPY, down); else if (*code == 'v' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_PASTE, down); else if (*code == 'x' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_CUT, down); else if (*code == 'z' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down); else if (*code == 'r' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_REDO, down); else if (*code == XK_Left && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else if (*code == XK_Right && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else if (*code == 'b' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down); else if (*code == 'e' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down); else { if (*code == 'i') nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(ctx, buf); } } } XFree(code); return 1; } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { /* Button handler */ int down = (evt->type == ButtonPress); const int x = evt->xbutton.x, y = evt->xbutton.y; if (evt->xbutton.button == Button1) { if (down) { /* Double-Click Button handler */ long dt = nk_timestamp() - x11.last_button_click; if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); x11.last_button_click = nk_timestamp(); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->xbutton.button == Button2) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->xbutton.button == Button3) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else if (evt->xbutton.button == Button4) nk_input_scroll(ctx, nk_vec2(0,1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(ctx, nk_vec2(0,-1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(ctx, x, y); if (ctx->input.mouse.grabbed) { ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; XWarpPointer(x11.dpy, None, x11.win, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); } return 1; } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } return 0; } NK_API struct nk_context* nk_x11_init(Display *dpy, Window win) { if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; if (!nk_x11_device_create()) return 0; x11.dpy = dpy; x11.win = win; /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, win, data, 1, 1); if (blank == None) return 0; x11.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} nk_init_default(&x11.ctx, 0); return &x11.ctx; } NK_API void nk_x11_shutdown(void) { nk_font_atlas_clear(&x11.atlas); nk_free(&x11.ctx); nk_x11_device_destroy(); XFreeCursor(x11.dpy, x11.cursor); memset(&x11, 0, sizeof(x11)); } #endif ================================================ FILE: demo/x11_rawfb/Makefile ================================================ # Install BIN = zahnrad # Flags CFLAGS += -std=c89 -pedantic -O2 -Wunused SRC = main.c OBJ = $(SRC:.c=.o) $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L -o bin/$(BIN) -lX11 -lXext -lm ================================================ FILE: demo/x11_rawfb/main.c ================================================ /* * MIT License * * Copyright (c) 2016-2017 Patrick Rudolph * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Based on x11/main.c. * */ #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_XLIBSHM_IMPLEMENTATION #define NK_RAWFB_IMPLEMENTATION #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_INCLUDE_SOFTWARE_FONT #include "../../nuklear.h" #include "nuklear_rawfb.h" #include "nuklear_xlib.h" #define DTIME 20 #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) typedef struct XWindow XWindow; struct XWindow { Display *dpy; Window root; Visual *vis; Colormap cmap; XWindowAttributes attr; XSetWindowAttributes swa; Window win; int screen; unsigned int width; unsigned int height; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static long timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } static void sleep_for(long t) { struct timespec req; const time_t sec = (int)(t/1000); const long ms = t - (sec * 1000); req.tv_sec = sec; req.tv_nsec = ms * 1000000L; while(-1 == nanosleep(&req, &req)); } /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { long dt; long started; int running = 1; int status; XWindow xw; struct rawfb_context *rawfb; void *fb = NULL; rawfb_pl pl; unsigned char tex_scratch[512 * 512]; /* X11 */ memset(&xw, 0, sizeof xw); xw.dpy = XOpenDisplay(NULL); if (!xw.dpy) die("Could not open a display; perhaps $DISPLAY is not set?"); xw.root = DefaultRootWindow(xw.dpy); xw.screen = XDefaultScreen(xw.dpy); xw.vis = XDefaultVisual(xw.dpy, xw.screen); xw.cmap = XCreateColormap(xw.dpy,xw.root,xw.vis,AllocNone); xw.swa.colormap = xw.cmap; xw.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask | KeymapStateMask | EnterWindowMask | LeaveWindowMask; xw.win = XCreateWindow(xw.dpy, xw.root, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, XDefaultDepth(xw.dpy, xw.screen), InputOutput, xw.vis, CWEventMask | CWColormap, &xw.swa); XStoreName(xw.dpy, xw.win, "X11"); XMapWindow(xw.dpy, xw.win); XGetWindowAttributes(xw.dpy, xw.win, &xw.attr); xw.width = (unsigned int)xw.attr.width; xw.height = (unsigned int)xw.attr.height; /* Framebuffer emulator */ status = nk_xlib_init(xw.dpy, xw.vis, xw.screen, xw.win, xw.width, xw.height, &fb, &pl); if (!status || !fb) return 0; /* GUI */ rawfb = nk_rawfb_init(fb, tex_scratch, xw.width, xw.height, xw.width * 4, pl); if (!rawfb) running = 0; #ifdef INCLUDE_STYLE /*set_style(&rawfb->ctx, THEME_WHITE);*/ /*set_style(&rawfb->ctx, THEME_RED);*/ /*set_style(&rawfb->ctx, THEME_BLUE);*/ /*set_style(&rawfb->ctx, THEME_DARK);*/ #endif while (running) { /* Input */ XEvent evt; started = timestamp(); nk_input_begin(&rawfb->ctx); while (XCheckWindowEvent(xw.dpy, xw.win, xw.swa.event_mask, &evt)) { if (XFilterEvent(&evt, xw.win)) continue; nk_xlib_handle_event(xw.dpy, xw.screen, xw.win, &evt, rawfb); } nk_input_end(&rawfb->ctx); /* GUI */ if (nk_begin(&rawfb->ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(&rawfb->ctx, 30, 80, 1); if (nk_button_label(&rawfb->ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(&rawfb->ctx, 30, 2); if (nk_option_label(&rawfb->ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(&rawfb->ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(&rawfb->ctx, 25, 1); nk_property_int(&rawfb->ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(&rawfb->ctx); if (nk_window_is_closed(&rawfb->ctx, "Demo")) break; /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(&rawfb->ctx); #endif #ifdef INCLUDE_OVERVIEW overview(&rawfb->ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(&rawfb->ctx); #endif /* ----------------------------------------- */ /* Draw framebuffer */ nk_rawfb_render(rawfb, nk_rgb(30,30,30), 1); /* Emulate framebuffer */ XClearWindow(xw.dpy, xw.win); nk_xlib_render(xw.win); XFlush(xw.dpy); /* Timing */ dt = timestamp() - started; if (dt < DTIME) sleep_for(DTIME - dt); } nk_rawfb_shutdown(rawfb); nk_xlib_shutdown(); XUnmapWindow(xw.dpy, xw.win); XFreeColormap(xw.dpy, xw.cmap); XDestroyWindow(xw.dpy, xw.win); XCloseDisplay(xw.dpy); return 0; } ================================================ FILE: demo/x11_rawfb/nuklear_rawfb.h ================================================ /* * MIT License * * Copyright (c) 2016-2017 Patrick Rudolph * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_RAWFB_H_ #define NK_RAWFB_H_ struct rawfb_context; typedef enum rawfb_pixel_layout { PIXEL_LAYOUT_XRGB_8888, PIXEL_LAYOUT_RGBX_8888, } rawfb_pl; /* All functions are thread-safe */ NK_API struct rawfb_context *nk_rawfb_init(void *fb, void *tex_mem, const unsigned int w, const unsigned int h, const unsigned int pitch, const rawfb_pl pl); NK_API void nk_rawfb_render(const struct rawfb_context *rawfb, const struct nk_color clear, const unsigned char enable_clear); NK_API void nk_rawfb_shutdown(struct rawfb_context *rawfb); NK_API void nk_rawfb_resize_fb(struct rawfb_context *rawfb, void *fb, const unsigned int w, const unsigned int h, const unsigned int pitch, const rawfb_pl pl); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_RAWFB_IMPLEMENTATION struct rawfb_image { void *pixels; int w, h, pitch; rawfb_pl pl; enum nk_font_atlas_format format; }; struct rawfb_context { struct nk_context ctx; struct nk_rect scissors; struct rawfb_image fb; struct rawfb_image font_tex; struct nk_font_atlas atlas; }; #ifndef MIN #define MIN(a,b) ((a) < (b) ? (a) : (b)) #endif #ifndef MAX #define MAX(a,b) ((a) < (b) ? (b) : (a)) #endif static unsigned int nk_rawfb_color2int(const struct nk_color c, rawfb_pl pl) { unsigned int res = 0; switch (pl) { case PIXEL_LAYOUT_RGBX_8888: res |= c.r << 24; res |= c.g << 16; res |= c.b << 8; res |= c.a; break; case PIXEL_LAYOUT_XRGB_8888: res |= c.a << 24; res |= c.r << 16; res |= c.g << 8; res |= c.b; break; default: perror("nk_rawfb_color2int(): Unsupported pixel layout.\n"); break; } return (res); } static struct nk_color nk_rawfb_int2color(const unsigned int i, rawfb_pl pl) { struct nk_color col = {0,0,0,0}; switch (pl) { case PIXEL_LAYOUT_RGBX_8888: col.r = (i >> 24) & 0xff; col.g = (i >> 16) & 0xff; col.b = (i >> 8) & 0xff; col.a = i & 0xff; break; case PIXEL_LAYOUT_XRGB_8888: col.a = (i >> 24) & 0xff; col.r = (i >> 16) & 0xff; col.g = (i >> 8) & 0xff; col.b = i & 0xff; break; default: perror("nk_rawfb_int2color(): Unsupported pixel layout.\n"); break; } return col; } static void nk_rawfb_ctx_setpixel(const struct rawfb_context *rawfb, const short x0, const short y0, const struct nk_color col) { unsigned int c = nk_rawfb_color2int(col, rawfb->fb.pl); unsigned char *pixels = rawfb->fb.pixels; unsigned int *ptr; pixels += y0 * rawfb->fb.pitch; ptr = (unsigned int *)pixels + x0; if (y0 < rawfb->scissors.h && y0 >= rawfb->scissors.y && x0 >= rawfb->scissors.x && x0 < rawfb->scissors.w) *ptr = c; } static void nk_rawfb_line_horizontal(const struct rawfb_context *rawfb, const short x0, const short y, const short x1, const struct nk_color col) { /* This function is called the most. Try to optimize it a bit... * It does not check for scissors or image borders. * The caller has to make sure it does no exceed bounds. */ unsigned int i, n; unsigned int c[16]; unsigned char *pixels = rawfb->fb.pixels; unsigned int *ptr; pixels += y * rawfb->fb.pitch; ptr = (unsigned int *)pixels + x0; n = x1 - x0; for (i = 0; i < sizeof(c) / sizeof(c[0]); i++) c[i] = nk_rawfb_color2int(col, rawfb->fb.pl); while (n > 16) { memcpy((void *)ptr, c, sizeof(c)); n -= 16; ptr += 16; } for (i = 0; i < n; i++) ptr[i] = c[i]; } static void nk_rawfb_img_setpixel(const struct rawfb_image *img, const int x0, const int y0, const struct nk_color col) { unsigned int c = nk_rawfb_color2int(col, img->pl); unsigned char *ptr; unsigned int *pixel; NK_ASSERT(img); if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) { ptr = img->pixels + (img->pitch * y0); pixel = (unsigned int *)ptr; if (img->format == NK_FONT_ATLAS_ALPHA8) { ptr[x0] = col.a; } else { pixel[x0] = c; } } } static struct nk_color nk_rawfb_img_getpixel(const struct rawfb_image *img, const int x0, const int y0) { struct nk_color col = {0, 0, 0, 0}; unsigned char *ptr; unsigned int pixel; NK_ASSERT(img); if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) { ptr = img->pixels + (img->pitch * y0); if (img->format == NK_FONT_ATLAS_ALPHA8) { col.a = ptr[x0]; col.b = col.g = col.r = 0xff; } else { pixel = ((unsigned int *)ptr)[x0]; col = nk_rawfb_int2color(pixel, img->pl); } } return col; } static void nk_rawfb_img_blendpixel(const struct rawfb_image *img, const int x0, const int y0, struct nk_color col) { struct nk_color col2; unsigned char inv_a; if (col.a == 0) return; inv_a = 0xff - col.a; col2 = nk_rawfb_img_getpixel(img, x0, y0); col.r = (col.r * col.a + col2.r * inv_a) >> 8; col.g = (col.g * col.a + col2.g * inv_a) >> 8; col.b = (col.b * col.a + col2.b * inv_a) >> 8; nk_rawfb_img_setpixel(img, x0, y0, col); } static void nk_rawfb_scissor(struct rawfb_context *rawfb, const float x, const float y, const float w, const float h) { rawfb->scissors.x = MIN(MAX(x, 0), rawfb->fb.w); rawfb->scissors.y = MIN(MAX(y, 0), rawfb->fb.h); rawfb->scissors.w = MIN(MAX(w + x, 0), rawfb->fb.w); rawfb->scissors.h = MIN(MAX(h + y, 0), rawfb->fb.h); } static void nk_rawfb_stroke_line(const struct rawfb_context *rawfb, short x0, short y0, short x1, short y1, const unsigned int line_thickness, const struct nk_color col) { short tmp; int dy, dx, stepx, stepy; dy = y1 - y0; dx = x1 - x0; /* fast path */ if (dy == 0) { if (dx == 0 || y0 >= rawfb->scissors.h || y0 < rawfb->scissors.y) return; if (dx < 0) { /* swap x0 and x1 */ tmp = x1; x1 = x0; x0 = tmp; } x1 = MIN(rawfb->scissors.w, x1); x0 = MIN(rawfb->scissors.w, x0); x1 = MAX(rawfb->scissors.x, x1); x0 = MAX(rawfb->scissors.x, x0); nk_rawfb_line_horizontal(rawfb, x0, y0, x1, col); return; } if (dy < 0) { dy = -dy; stepy = -1; } else stepy = 1; if (dx < 0) { dx = -dx; stepx = -1; } else stepx = 1; dy <<= 1; dx <<= 1; nk_rawfb_ctx_setpixel(rawfb, x0, y0, col); if (dx > dy) { int fraction = dy - (dx >> 1); while (x0 != x1) { if (fraction >= 0) { y0 += stepy; fraction -= dx; } x0 += stepx; fraction += dy; nk_rawfb_ctx_setpixel(rawfb, x0, y0, col); } } else { int fraction = dx - (dy >> 1); while (y0 != y1) { if (fraction >= 0) { x0 += stepx; fraction -= dy; } y0 += stepy; fraction += dx; nk_rawfb_ctx_setpixel(rawfb, x0, y0, col); } } } static void nk_rawfb_fill_polygon(const struct rawfb_context *rawfb, const struct nk_vec2i *pnts, int count, const struct nk_color col) { int i = 0; #define MAX_POINTS 64 int left = 10000, top = 10000, bottom = 0, right = 0; int nodes, nodeX[MAX_POINTS], pixelX, pixelY, j, swap ; if (count == 0) return; if (count > MAX_POINTS) count = MAX_POINTS; /* Get polygon dimensions */ for (i = 0; i < count; i++) { if (left > pnts[i].x) left = pnts[i].x; if (right < pnts[i].x) right = pnts[i].x; if (top > pnts[i].y) top = pnts[i].y; if (bottom < pnts[i].y) bottom = pnts[i].y; } bottom++; right++; /* Polygon scanline algorithm released under public-domain by Darel Rex Finley, 2007 */ /* Loop through the rows of the image. */ for (pixelY = top; pixelY < bottom; pixelY ++) { nodes = 0; /* Build a list of nodes. */ j = count - 1; for (i = 0; i < count; i++) { if (((pnts[i].y < pixelY) && (pnts[j].y >= pixelY)) || ((pnts[j].y < pixelY) && (pnts[i].y >= pixelY))) { nodeX[nodes++]= (int)((float)pnts[i].x + ((float)pixelY - (float)pnts[i].y) / ((float)pnts[j].y - (float)pnts[i].y) * ((float)pnts[j].x - (float)pnts[i].x)); } j = i; } /* Sort the nodes, via a simple “Bubble” sort. */ i = 0; while (i < nodes - 1) { if (nodeX[i] > nodeX[i+1]) { swap = nodeX[i]; nodeX[i] = nodeX[i+1]; nodeX[i+1] = swap; if (i) i--; } else i++; } /* Fill the pixels between node pairs. */ for (i = 0; i < nodes; i += 2) { if (nodeX[i+0] >= right) break; if (nodeX[i+1] > left) { if (nodeX[i+0] < left) nodeX[i+0] = left ; if (nodeX[i+1] > right) nodeX[i+1] = right; for (pixelX = nodeX[i]; pixelX < nodeX[i + 1]; pixelX++) nk_rawfb_ctx_setpixel(rawfb, pixelX, pixelY, col); } } } #undef MAX_POINTS } static void nk_rawfb_stroke_arc(const struct rawfb_context *rawfb, short x0, short y0, short w, short h, const short s, const short line_thickness, const struct nk_color col) { /* Bresenham's ellipses - modified to draw one quarter */ const int a2 = (w * w) / 4; const int b2 = (h * h) / 4; const int fa2 = 4 * a2, fb2 = 4 * b2; int x, y, sigma; if (s != 0 && s != 90 && s != 180 && s != 270) return; if (w < 1 || h < 1) return; /* Convert upper left to center */ h = (h + 1) / 2; w = (w + 1) / 2; x0 += w; y0 += h; /* First half */ for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { if (s == 180) nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 + y, col); else if (s == 270) nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 + y, col); else if (s == 0) nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 - y, col); else if (s == 90) nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 - y, col); if (sigma >= 0) { sigma += fa2 * (1 - y); y--; } sigma += b2 * ((4 * x) + 6); } /* Second half */ for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { if (s == 180) nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 + y, col); else if (s == 270) nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 + y, col); else if (s == 0) nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 - y, col); else if (s == 90) nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 - y, col); if (sigma >= 0) { sigma += fb2 * (1 - x); x--; } sigma += a2 * ((4 * y) + 6); } } static void nk_rawfb_fill_arc(const struct rawfb_context *rawfb, short x0, short y0, short w, short h, const short s, const struct nk_color col) { /* Bresenham's ellipses - modified to fill one quarter */ const int a2 = (w * w) / 4; const int b2 = (h * h) / 4; const int fa2 = 4 * a2, fb2 = 4 * b2; int x, y, sigma; struct nk_vec2i pnts[3]; if (w < 1 || h < 1) return; if (s != 0 && s != 90 && s != 180 && s != 270) return; /* Convert upper left to center */ h = (h + 1) / 2; w = (w + 1) / 2; x0 += w; y0 += h; pnts[0].x = x0; pnts[0].y = y0; pnts[2].x = x0; pnts[2].y = y0; /* First half */ for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { if (s == 180) { pnts[1].x = x0 + x; pnts[1].y = y0 + y; } else if (s == 270) { pnts[1].x = x0 - x; pnts[1].y = y0 + y; } else if (s == 0) { pnts[1].x = x0 + x; pnts[1].y = y0 - y; } else if (s == 90) { pnts[1].x = x0 - x; pnts[1].y = y0 - y; } nk_rawfb_fill_polygon(rawfb, pnts, 3, col); pnts[2] = pnts[1]; if (sigma >= 0) { sigma += fa2 * (1 - y); y--; } sigma += b2 * ((4 * x) + 6); } /* Second half */ for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { if (s == 180) { pnts[1].x = x0 + x; pnts[1].y = y0 + y; } else if (s == 270) { pnts[1].x = x0 - x; pnts[1].y = y0 + y; } else if (s == 0) { pnts[1].x = x0 + x; pnts[1].y = y0 - y; } else if (s == 90) { pnts[1].x = x0 - x; pnts[1].y = y0 - y; } nk_rawfb_fill_polygon(rawfb, pnts, 3, col); pnts[2] = pnts[1]; if (sigma >= 0) { sigma += fb2 * (1 - x); x--; } sigma += a2 * ((4 * y) + 6); } } static void nk_rawfb_stroke_rect(const struct rawfb_context *rawfb, const short x, const short y, const short w, const short h, const short r, const short line_thickness, const struct nk_color col) { if (r == 0) { nk_rawfb_stroke_line(rawfb, x, y, x + w, y, line_thickness, col); nk_rawfb_stroke_line(rawfb, x, y + h, x + w, y + h, line_thickness, col); nk_rawfb_stroke_line(rawfb, x, y, x, y + h, line_thickness, col); nk_rawfb_stroke_line(rawfb, x + w, y, x + w, y + h, line_thickness, col); } else { const short xc = x + r; const short yc = y + r; const short wc = (short)(w - 2 * r); const short hc = (short)(h - 2 * r); nk_rawfb_stroke_line(rawfb, xc, y, xc + wc, y, line_thickness, col); nk_rawfb_stroke_line(rawfb, x + w, yc, x + w, yc + hc, line_thickness, col); nk_rawfb_stroke_line(rawfb, xc, y + h, xc + wc, y + h, line_thickness, col); nk_rawfb_stroke_line(rawfb, x, yc, x, yc + hc, line_thickness, col); nk_rawfb_stroke_arc(rawfb, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 , line_thickness, col); nk_rawfb_stroke_arc(rawfb, x, y, (unsigned)r*2, (unsigned)r*2, 90 , line_thickness, col); nk_rawfb_stroke_arc(rawfb, x, yc + hc - r, (unsigned)r*2, (unsigned)r*2, 270 , line_thickness, col); nk_rawfb_stroke_arc(rawfb, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)r*2, 180 , line_thickness, col); } } static void nk_rawfb_fill_rect(const struct rawfb_context *rawfb, const short x, const short y, const short w, const short h, const short r, const struct nk_color col) { int i; if (r == 0) { for (i = 0; i < h; i++) nk_rawfb_stroke_line(rawfb, x, y + i, x + w, y + i, 1, col); } else { const short xc = x + r; const short yc = y + r; const short wc = (short)(w - 2 * r); const short hc = (short)(h - 2 * r); struct nk_vec2i pnts[12]; pnts[0].x = x; pnts[0].y = yc; pnts[1].x = xc; pnts[1].y = yc; pnts[2].x = xc; pnts[2].y = y; pnts[3].x = xc + wc; pnts[3].y = y; pnts[4].x = xc + wc; pnts[4].y = yc; pnts[5].x = x + w; pnts[5].y = yc; pnts[6].x = x + w; pnts[6].y = yc + hc; pnts[7].x = xc + wc; pnts[7].y = yc + hc; pnts[8].x = xc + wc; pnts[8].y = y + h; pnts[9].x = xc; pnts[9].y = y + h; pnts[10].x = xc; pnts[10].y = yc + hc; pnts[11].x = x; pnts[11].y = yc + hc; nk_rawfb_fill_polygon(rawfb, pnts, 12, col); nk_rawfb_fill_arc(rawfb, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 , col); nk_rawfb_fill_arc(rawfb, x, y, (unsigned)r*2, (unsigned)r*2, 90 , col); nk_rawfb_fill_arc(rawfb, x, yc + hc - r, (unsigned)r*2, (unsigned)r*2, 270 , col); nk_rawfb_fill_arc(rawfb, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)r*2, 180 , col); } } NK_API void nk_rawfb_draw_rect_multi_color(const struct rawfb_context *rawfb, const short x, const short y, const short w, const short h, struct nk_color tl, struct nk_color tr, struct nk_color br, struct nk_color bl) { int i, j; struct nk_color *edge_buf; struct nk_color *edge_t; struct nk_color *edge_b; struct nk_color *edge_l; struct nk_color *edge_r; struct nk_color pixel; edge_buf = malloc(((2*w) + (2*h)) * sizeof(struct nk_color)); if (edge_buf == NULL) return; edge_t = edge_buf; edge_b = edge_buf + w; edge_l = edge_buf + (w*2); edge_r = edge_buf + (w*2) + h; /* Top and bottom edge gradients */ for (i=0; ifb, x+j, y+i, edge_t[j]); } else if (i==h-1) { nk_rawfb_img_blendpixel(&rawfb->fb, x+j, y+i, edge_b[j]); } else { if (j==0) { nk_rawfb_img_blendpixel(&rawfb->fb, x+j, y+i, edge_l[i]); } else if (j==w-1) { nk_rawfb_img_blendpixel(&rawfb->fb, x+j, y+i, edge_r[i]); } else { pixel.r = (((((float)edge_r[i].r - edge_l[i].r)/(w-1))*j) + 0.5) + edge_l[i].r; pixel.g = (((((float)edge_r[i].g - edge_l[i].g)/(w-1))*j) + 0.5) + edge_l[i].g; pixel.b = (((((float)edge_r[i].b - edge_l[i].b)/(w-1))*j) + 0.5) + edge_l[i].b; pixel.a = (((((float)edge_r[i].a - edge_l[i].a)/(w-1))*j) + 0.5) + edge_l[i].a; nk_rawfb_img_blendpixel(&rawfb->fb, x+j, y+i, pixel); } } } } free(edge_buf); } static void nk_rawfb_fill_triangle(const struct rawfb_context *rawfb, const short x0, const short y0, const short x1, const short y1, const short x2, const short y2, const struct nk_color col) { struct nk_vec2i pnts[3]; pnts[0].x = x0; pnts[0].y = y0; pnts[1].x = x1; pnts[1].y = y1; pnts[2].x = x2; pnts[2].y = y2; nk_rawfb_fill_polygon(rawfb, pnts, 3, col); } static void nk_rawfb_stroke_triangle(const struct rawfb_context *rawfb, const short x0, const short y0, const short x1, const short y1, const short x2, const short y2, const unsigned short line_thickness, const struct nk_color col) { nk_rawfb_stroke_line(rawfb, x0, y0, x1, y1, line_thickness, col); nk_rawfb_stroke_line(rawfb, x1, y1, x2, y2, line_thickness, col); nk_rawfb_stroke_line(rawfb, x2, y2, x0, y0, line_thickness, col); } static void nk_rawfb_stroke_polygon(const struct rawfb_context *rawfb, const struct nk_vec2i *pnts, const int count, const unsigned short line_thickness, const struct nk_color col) { int i; for (i = 1; i < count; ++i) nk_rawfb_stroke_line(rawfb, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y, line_thickness, col); nk_rawfb_stroke_line(rawfb, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y, line_thickness, col); } static void nk_rawfb_stroke_polyline(const struct rawfb_context *rawfb, const struct nk_vec2i *pnts, const int count, const unsigned short line_thickness, const struct nk_color col) { int i; for (i = 0; i < count-1; ++i) nk_rawfb_stroke_line(rawfb, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y, line_thickness, col); } static void nk_rawfb_fill_circle(const struct rawfb_context *rawfb, short x0, short y0, short w, short h, const struct nk_color col) { /* Bresenham's ellipses */ const int a2 = (w * w) / 4; const int b2 = (h * h) / 4; const int fa2 = 4 * a2, fb2 = 4 * b2; int x, y, sigma; /* Convert upper left to center */ h = (h + 1) / 2; w = (w + 1) / 2; x0 += w; y0 += h; /* First half */ for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { nk_rawfb_stroke_line(rawfb, x0 - x, y0 + y, x0 + x, y0 + y, 1, col); nk_rawfb_stroke_line(rawfb, x0 - x, y0 - y, x0 + x, y0 - y, 1, col); if (sigma >= 0) { sigma += fa2 * (1 - y); y--; } sigma += b2 * ((4 * x) + 6); } /* Second half */ for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { nk_rawfb_stroke_line(rawfb, x0 - x, y0 + y, x0 + x, y0 + y, 1, col); nk_rawfb_stroke_line(rawfb, x0 - x, y0 - y, x0 + x, y0 - y, 1, col); if (sigma >= 0) { sigma += fb2 * (1 - x); x--; } sigma += a2 * ((4 * y) + 6); } } static void nk_rawfb_stroke_circle(const struct rawfb_context *rawfb, short x0, short y0, short w, short h, const short line_thickness, const struct nk_color col) { /* Bresenham's ellipses */ const int a2 = (w * w) / 4; const int b2 = (h * h) / 4; const int fa2 = 4 * a2, fb2 = 4 * b2; int x, y, sigma; /* Convert upper left to center */ h = (h + 1) / 2; w = (w + 1) / 2; x0 += w; y0 += h; /* First half */ for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 + y, col); nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 + y, col); nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 - y, col); nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 - y, col); if (sigma >= 0) { sigma += fa2 * (1 - y); y--; } sigma += b2 * ((4 * x) + 6); } /* Second half */ for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 + y, col); nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 + y, col); nk_rawfb_ctx_setpixel(rawfb, x0 + x, y0 - y, col); nk_rawfb_ctx_setpixel(rawfb, x0 - x, y0 - y, col); if (sigma >= 0) { sigma += fb2 * (1 - x); x--; } sigma += a2 * ((4 * y) + 6); } } static void nk_rawfb_stroke_curve(const struct rawfb_context *rawfb, const struct nk_vec2i p1, const struct nk_vec2i p2, const struct nk_vec2i p3, const struct nk_vec2i p4, const unsigned int num_segments, const unsigned short line_thickness, const struct nk_color col) { unsigned int i_step, segments; float t_step; struct nk_vec2i last = p1; segments = MAX(num_segments, 1); t_step = 1.0f/(float)segments; for (i_step = 1; i_step <= segments; ++i_step) { float t = t_step * (float)i_step; float u = 1.0f - t; float w1 = u*u*u; float w2 = 3*u*u*t; float w3 = 3*u*t*t; float w4 = t * t *t; float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; nk_rawfb_stroke_line(rawfb, last.x, last.y, (short)x, (short)y, line_thickness,col); last.x = (short)x; last.y = (short)y; } } static void nk_rawfb_clear(const struct rawfb_context *rawfb, const struct nk_color col) { nk_rawfb_fill_rect(rawfb, 0, 0, rawfb->fb.w, rawfb->fb.h, 0, col); } NK_API struct rawfb_context* nk_rawfb_init(void *fb, void *tex_mem, const unsigned int w, const unsigned int h, const unsigned int pitch, const rawfb_pl pl) { const void *tex; struct rawfb_context *rawfb; rawfb = malloc(sizeof(struct rawfb_context)); if (!rawfb) return NULL; NK_MEMSET(rawfb, 0, sizeof(struct rawfb_context)); rawfb->font_tex.pixels = tex_mem; rawfb->font_tex.format = NK_FONT_ATLAS_ALPHA8; rawfb->font_tex.w = rawfb->font_tex.h = 0; rawfb->fb.pixels = fb; rawfb->fb.w= w; rawfb->fb.h = h; rawfb->fb.pl = pl; if (pl == PIXEL_LAYOUT_RGBX_8888 || pl == PIXEL_LAYOUT_XRGB_8888) { rawfb->fb.format = NK_FONT_ATLAS_RGBA32; rawfb->fb.pitch = pitch; } else { perror("nk_rawfb_init(): Unsupported pixel layout.\n"); free(rawfb); return NULL; } if (0 == nk_init_default(&rawfb->ctx, 0)) { free(rawfb); return NULL; } nk_font_atlas_init_default(&rawfb->atlas); nk_font_atlas_begin(&rawfb->atlas); tex = nk_font_atlas_bake(&rawfb->atlas, &rawfb->font_tex.w, &rawfb->font_tex.h, rawfb->font_tex.format); if (!tex) { free(rawfb); return NULL; } switch(rawfb->font_tex.format) { case NK_FONT_ATLAS_ALPHA8: rawfb->font_tex.pitch = rawfb->font_tex.w * 1; break; case NK_FONT_ATLAS_RGBA32: rawfb->font_tex.pitch = rawfb->font_tex.w * 4; break; }; /* Store the font texture in tex scratch memory */ memcpy(rawfb->font_tex.pixels, tex, rawfb->font_tex.pitch * rawfb->font_tex.h); nk_font_atlas_end(&rawfb->atlas, nk_handle_ptr(NULL), NULL); if (rawfb->atlas.default_font) nk_style_set_font(&rawfb->ctx, &rawfb->atlas.default_font->handle); nk_style_load_all_cursors(&rawfb->ctx, rawfb->atlas.cursors); nk_rawfb_scissor(rawfb, 0, 0, rawfb->fb.w, rawfb->fb.h); return rawfb; } static void nk_rawfb_stretch_image(const struct rawfb_image *dst, const struct rawfb_image *src, const struct nk_rect *dst_rect, const struct nk_rect *src_rect, const struct nk_rect *dst_scissors, const struct nk_color *fg) { short i, j; struct nk_color col; float xinc = src_rect->w / dst_rect->w; float yinc = src_rect->h / dst_rect->h; float xoff = src_rect->x, yoff = src_rect->y; /* Simple nearest filtering rescaling */ /* TODO: use bilinear filter */ for (j = 0; j < (short)dst_rect->h; j++) { for (i = 0; i < (short)dst_rect->w; i++) { if (dst_scissors) { if (i + (int)(dst_rect->x + 0.5f) < dst_scissors->x || i + (int)(dst_rect->x + 0.5f) >= dst_scissors->w) continue; if (j + (int)(dst_rect->y + 0.5f) < dst_scissors->y || j + (int)(dst_rect->y + 0.5f) >= dst_scissors->h) continue; } col = nk_rawfb_img_getpixel(src, (int)xoff, (int) yoff); if (col.r || col.g || col.b) { col.r = fg->r; col.g = fg->g; col.b = fg->b; } nk_rawfb_img_blendpixel(dst, i + (int)(dst_rect->x + 0.5f), j + (int)(dst_rect->y + 0.5f), col); xoff += xinc; } xoff = src_rect->x; yoff += yinc; } } static void nk_rawfb_font_query_font_glyph(nk_handle handle, const float height, struct nk_user_font_glyph *glyph, const nk_rune codepoint, const nk_rune next_codepoint) { float scale; const struct nk_font_glyph *g; struct nk_font *font; NK_ASSERT(glyph); NK_UNUSED(next_codepoint); font = (struct nk_font*)handle.ptr; NK_ASSERT(font); NK_ASSERT(font->glyphs); if (!font || !glyph) return; scale = height/font->info.height; g = nk_font_find_glyph(font, codepoint); glyph->width = (g->x1 - g->x0) * scale; glyph->height = (g->y1 - g->y0) * scale; glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale); glyph->xadvance = (g->xadvance * scale); glyph->uv[0] = nk_vec2(g->u0, g->v0); glyph->uv[1] = nk_vec2(g->u1, g->v1); } NK_API void nk_rawfb_draw_text(const struct rawfb_context *rawfb, const struct nk_user_font *font, const struct nk_rect rect, const char *text, const int len, const float font_height, const struct nk_color fg) { float x = 0; int text_len = 0; nk_rune unicode = 0; nk_rune next = 0; int glyph_len = 0; int next_glyph_len = 0; struct nk_user_font_glyph g; if (!len || !text) return; x = 0; glyph_len = nk_utf_decode(text, &unicode, len); if (!glyph_len) return; /* draw every glyph image */ while (text_len < len && glyph_len) { struct nk_rect src_rect; struct nk_rect dst_rect; float char_width = 0; if (unicode == NK_UTF_INVALID) break; /* query currently drawn glyph information */ next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len); nk_rawfb_font_query_font_glyph(font->userdata, font_height, &g, unicode, (next == NK_UTF_INVALID) ? '\0' : next); /* calculate and draw glyph drawing rectangle and image */ char_width = g.xadvance; src_rect.x = g.uv[0].x * rawfb->font_tex.w; src_rect.y = g.uv[0].y * rawfb->font_tex.h; src_rect.w = g.uv[1].x * rawfb->font_tex.w - g.uv[0].x * rawfb->font_tex.w; src_rect.h = g.uv[1].y * rawfb->font_tex.h - g.uv[0].y * rawfb->font_tex.h; dst_rect.x = x + g.offset.x + rect.x; dst_rect.y = g.offset.y + rect.y; dst_rect.w = ceilf(g.width); dst_rect.h = ceilf(g.height); /* Use software rescaling to blit glyph from font_text to framebuffer */ nk_rawfb_stretch_image(&rawfb->fb, &rawfb->font_tex, &dst_rect, &src_rect, &rawfb->scissors, &fg); /* offset next glyph */ text_len += glyph_len; x += char_width; glyph_len = next_glyph_len; unicode = next; } } NK_API void nk_rawfb_drawimage(const struct rawfb_context *rawfb, const int x, const int y, const int w, const int h, const struct nk_image *img, const struct nk_color *col) { struct nk_rect src_rect; struct nk_rect dst_rect; src_rect.x = img->region[0]; src_rect.y = img->region[1]; src_rect.w = img->region[2]; src_rect.h = img->region[3]; dst_rect.x = x; dst_rect.y = y; dst_rect.w = w; dst_rect.h = h; nk_rawfb_stretch_image(&rawfb->fb, &rawfb->font_tex, &dst_rect, &src_rect, &rawfb->scissors, col); } NK_API void nk_rawfb_shutdown(struct rawfb_context *rawfb) { if (rawfb) { nk_free(&rawfb->ctx); NK_MEMSET(rawfb, 0, sizeof(struct rawfb_context)); free(rawfb); } } NK_API void nk_rawfb_resize_fb(struct rawfb_context *rawfb, void *fb, const unsigned int w, const unsigned int h, const unsigned int pitch, const rawfb_pl pl) { rawfb->fb.w = w; rawfb->fb.h = h; rawfb->fb.pixels = fb; rawfb->fb.pitch = pitch; rawfb->fb.pl = pl; } NK_API void nk_rawfb_render(const struct rawfb_context *rawfb, const struct nk_color clear, const unsigned char enable_clear) { const struct nk_command *cmd; if (enable_clear) nk_rawfb_clear(rawfb, clear); nk_foreach(cmd, (struct nk_context*)&rawfb->ctx) { switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; nk_rawfb_scissor((struct rawfb_context *)rawfb, s->x, s->y, s->w, s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; nk_rawfb_stroke_line(rawfb, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; nk_rawfb_stroke_rect(rawfb, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->line_thickness, r->color); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; nk_rawfb_fill_rect(rawfb, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; nk_rawfb_stroke_circle(rawfb, c->x, c->y, c->w, c->h, c->line_thickness, c->color); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_rawfb_fill_circle(rawfb, c->x, c->y, c->w, c->h, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; nk_rawfb_stroke_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; nk_rawfb_fill_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; nk_rawfb_stroke_polygon(rawfb, p->points, p->point_count, p->line_thickness,p->color); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; nk_rawfb_fill_polygon(rawfb, p->points, p->point_count, p->color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; nk_rawfb_stroke_polyline(rawfb, p->points, p->point_count, p->line_thickness, p->color); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_rawfb_draw_text(rawfb, t->font, nk_rect(t->x, t->y, t->w, t->h), t->string, t->length, t->height, t->foreground); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; nk_rawfb_stroke_curve(rawfb, q->begin, q->ctrl[0], q->ctrl[1], q->end, 22, q->line_thickness, q->color); } break; case NK_COMMAND_RECT_MULTI_COLOR: { const struct nk_command_rect_multi_color *q = (const struct nk_command_rect_multi_color *)cmd; nk_rawfb_draw_rect_multi_color(rawfb, q->x, q->y, q->w, q->h, q->left, q->top, q->right, q->bottom); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *q = (const struct nk_command_image *)cmd; nk_rawfb_drawimage(rawfb, q->x, q->y, q->w, q->h, &q->img, &q->col); } break; case NK_COMMAND_ARC: { assert(0 && "NK_COMMAND_ARC not implemented\n"); } break; case NK_COMMAND_ARC_FILLED: { assert(0 && "NK_COMMAND_ARC_FILLED not implemented\n"); } break; default: break; } } nk_clear((struct nk_context*)&rawfb->ctx); } #endif ================================================ FILE: demo/x11_rawfb/nuklear_xlib.h ================================================ /* * MIT License * * Copyright (c) 2016-2017 Patrick Rudolph * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Based on x11/nuklear_xlib.h. */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIBSHM_H_ #define NK_XLIBSHM_H_ #include NK_API int nk_xlib_init(Display *dpy, Visual *vis, int screen, Window root, unsigned int w, unsigned int h, void **fb, rawfb_pl *pl); NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt, struct rawfb_context *rawfb); NK_API void nk_xlib_render(Drawable screen); NK_API void nk_xlib_shutdown(void); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIBSHM_IMPLEMENTATION #include #include #include #include #include #include #include static struct { struct nk_context ctx; struct XSurface *surf; Cursor cursor; Display *dpy; Window root; XImage *ximg; XShmSegmentInfo xsi; char fallback; GC gc; } xlib; NK_API int nk_xlib_init(Display *dpy, Visual *vis, int screen, Window root, unsigned int w, unsigned int h, void **fb, rawfb_pl *pl) { unsigned int depth = XDefaultDepth(dpy, screen); xlib.dpy = dpy; xlib.root = root; if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1); if (blank == None) return 0; xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} xlib.fallback = False; do {/* Initialize shared memory according to: * https://www.x.org/archive/X11R7.5/doc/Xext/mit-shm.html */ int status; if (!XShmQueryExtension(dpy)) { printf("No XShm Extension available.\n"); xlib.fallback = True; break; } xlib.ximg = XShmCreateImage(dpy, vis, depth, ZPixmap, NULL, &xlib.xsi, w, h); if (!xlib.ximg) { xlib.fallback = True; break; } xlib.xsi.shmid = shmget(IPC_PRIVATE, xlib.ximg->bytes_per_line * xlib.ximg->height, IPC_CREAT | 0777); if (xlib.xsi.shmid < 0) { XDestroyImage(xlib.ximg); xlib.fallback = True; break; } xlib.xsi.shmaddr = xlib.ximg->data = shmat(xlib.xsi.shmid, NULL, 0); if ((size_t)xlib.xsi.shmaddr < 0) { XDestroyImage(xlib.ximg); xlib.fallback = True; break; } xlib.xsi.readOnly = False; status = XShmAttach(dpy, &xlib.xsi); if (!status) { shmdt(xlib.xsi.shmaddr); XDestroyImage(xlib.ximg); xlib.fallback = True; break; } XSync(dpy, False); shmctl(xlib.xsi.shmid, IPC_RMID, NULL); } while(0); if (xlib.fallback) { xlib.ximg = XCreateImage(dpy, vis, depth, ZPixmap, 0, NULL, w, h, 32, 0); if (!xlib.ximg) return 0; xlib.ximg->data = malloc(h * xlib.ximg->bytes_per_line); if (!xlib.ximg->data) return 0; } xlib.gc = XDefaultGC(dpy, screen); *fb = xlib.ximg->data; if (xlib.ximg->red_mask == 0xff0000 && xlib.ximg->green_mask == 0xff00 && xlib.ximg->blue_mask == 0xff && xlib.ximg->bits_per_pixel == 32) { *pl = PIXEL_LAYOUT_XRGB_8888; } else if (xlib.ximg->red_mask == 0xff000000 && xlib.ximg->green_mask == 0xff0000 && xlib.ximg->blue_mask == 0xff00 && xlib.ximg->bits_per_pixel == 32) { *pl = PIXEL_LAYOUT_RGBX_8888; } else { perror("nk_xlib_init(): Unrecognized pixel layout.\n"); return 0; } return 1; } NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt, struct rawfb_context *rawfb) { /* optional grabbing behavior */ if (rawfb->ctx.input.mouse.grab) { /* XDefineCursor(xlib.dpy, xlib.root, xlib.cursor); */ rawfb->ctx.input.mouse.grab = 0; } else if (rawfb->ctx.input.mouse.ungrab) { XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0, (int)rawfb->ctx.input.mouse.prev.x, (int)rawfb->ctx.input.mouse.prev.y); /* XUndefineCursor(xlib.dpy, xlib.root); */ rawfb->ctx.input.mouse.ungrab = 0; } if (evt->type == KeyPress || evt->type == KeyRelease) { /* Key handler */ int ret, down = (evt->type == KeyPress); KeySym *code = XGetKeyboardMapping(xlib.dpy, (KeyCode)evt->xkey.keycode, 1, &ret); if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(&rawfb->ctx, NK_KEY_SHIFT, down); else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(&rawfb->ctx, NK_KEY_CTRL, down); else if (*code == XK_Delete) nk_input_key(&rawfb->ctx, NK_KEY_DEL, down); else if (*code == XK_Return) nk_input_key(&rawfb->ctx, NK_KEY_ENTER, down); else if (*code == XK_Tab) nk_input_key(&rawfb->ctx, NK_KEY_TAB, down); else if (*code == XK_Left) nk_input_key(&rawfb->ctx, NK_KEY_LEFT, down); else if (*code == XK_Right) nk_input_key(&rawfb->ctx, NK_KEY_RIGHT, down); else if (*code == XK_Up) nk_input_key(&rawfb->ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(&rawfb->ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(&rawfb->ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_Escape) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_RESET_MODE, down); else if (*code == XK_Page_Up) nk_input_key(&rawfb->ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(&rawfb->ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(&rawfb->ctx, NK_KEY_TEXT_START, down); nk_input_key(&rawfb->ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(&rawfb->ctx, NK_KEY_TEXT_END, down); nk_input_key(&rawfb->ctx, NK_KEY_SCROLL_END, down); } else { if (*code == 'c' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_COPY, down); else if (*code == 'v' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_PASTE, down); else if (*code == 'x' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_CUT, down); else if (*code == 'z' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_UNDO, down); else if (*code == 'r' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_REDO, down); else if (*code == XK_Left && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_WORD_LEFT, down); else if (*code == XK_Right && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_WORD_RIGHT, down); else if (*code == 'b' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_LINE_START, down); else if (*code == 'e' && (evt->xkey.state & ControlMask)) nk_input_key(&rawfb->ctx, NK_KEY_TEXT_LINE_END, down); else { if (*code == 'i') nk_input_key(&rawfb->ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(&rawfb->ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(&rawfb->ctx, buf); } } } XFree(code); return 1; } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { /* Button handler */ int down = (evt->type == ButtonPress); const int x = evt->xbutton.x, y = evt->xbutton.y; if (evt->xbutton.button == Button1) nk_input_button(&rawfb->ctx, NK_BUTTON_LEFT, x, y, down); if (evt->xbutton.button == Button2) nk_input_button(&rawfb->ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->xbutton.button == Button3) nk_input_button(&rawfb->ctx, NK_BUTTON_RIGHT, x, y, down); else if (evt->xbutton.button == Button4) nk_input_scroll(&rawfb->ctx, nk_vec2(0, 1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(&rawfb->ctx, nk_vec2(0, -1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(&rawfb->ctx, x, y); if (rawfb->ctx.input.mouse.grabbed) { rawfb->ctx.input.mouse.pos.x = rawfb->ctx.input.mouse.prev.x; rawfb->ctx.input.mouse.pos.y = rawfb->ctx.input.mouse.prev.y; XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0, (int)rawfb->ctx.input.mouse.pos.x, (int)rawfb->ctx.input.mouse.pos.y); } return 1; } else if (evt->type == Expose || evt->type == ConfigureNotify) { /* Window resize handler */ void *fb; unsigned int width, height; XWindowAttributes attr; XGetWindowAttributes(dpy, win, &attr); rawfb_pl pl; width = (unsigned int)attr.width; height = (unsigned int)attr.height; nk_xlib_shutdown(); nk_xlib_init(dpy, XDefaultVisual(dpy, screen), screen, win, width, height, &fb, &pl); nk_rawfb_resize_fb(rawfb, fb, width, height, width * 4, pl); } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } else if (evt->type == LeaveNotify) { XUndefineCursor(xlib.dpy, xlib.root); } else if (evt->type == EnterNotify) { XDefineCursor(xlib.dpy, xlib.root, xlib.cursor); } return 0; } NK_API void nk_xlib_shutdown(void) { XFreeCursor(xlib.dpy, xlib.cursor); if (xlib.fallback) { free(xlib.ximg->data); XDestroyImage(xlib.ximg); } else { XShmDetach(xlib.dpy, &xlib.xsi); XDestroyImage(xlib.ximg); shmdt(xlib.xsi.shmaddr); shmctl(xlib.xsi.shmid, IPC_RMID, NULL); } NK_MEMSET(&xlib, 0, sizeof(xlib)); } NK_API void nk_xlib_render(Drawable screen) { if (xlib.fallback) XPutImage(xlib.dpy, screen, xlib.gc, xlib.ximg, 0, 0, 0, 0, xlib.ximg->width, xlib.ximg->height); else XShmPutImage(xlib.dpy, screen, xlib.gc, xlib.ximg, 0, 0, 0, 0, xlib.ximg->width, xlib.ximg->height, False); } #endif ================================================ FILE: demo/x11_xft/Makefile ================================================ # Install BIN = zahnrad # Flags CFLAGS += -std=c89 -pedantic -O2 SRC = main.c OBJ = $(SRC:.c=.o) LDFLAGS += -lX11 -lm CFLAGS += ${shell pkg-config --cflags xft} -DNK_XLIB_USE_XFT LDFLAGS += ${shell pkg-config --libs xft} SRC = ${wildcard *.c} OBJ = $(SRC:.c=.o) $(BIN): @mkdir -p bin rm -f bin/$(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -D_POSIX_C_SOURCE=200809L -o bin/$(BIN) -lX11 ${LDFLAGS} ================================================ FILE: demo/x11_xft/main.c ================================================ /* nuklear - v1.32.0 - public domain */ #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_STANDARD_VARARGS #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_IMPLEMENTATION #define NK_XLIB_IMPLEMENTATION #include "../../nuklear.h" #include "nuklear_xlib.h" #define DTIME 20 #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 typedef struct XWindow XWindow; struct XWindow { Display *dpy; Window root; Visual *vis; Colormap cmap; XWindowAttributes attr; XSetWindowAttributes swa; Window win; int screen; XFont *font; unsigned int width; unsigned int height; Atom wm_delete_window; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static long timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } static void sleep_for(long t) { struct timespec req; const time_t sec = (int)(t/1000); const long ms = t - (sec * 1000); req.tv_sec = sec; req.tv_nsec = ms * 1000000L; while(-1 == nanosleep(&req, &req)); } /* =============================================================== * * EXAMPLE * * ===============================================================*/ /* This are some code examples to provide a small overview of what can be * done with this library. To try out an example uncomment the defines */ /*#define INCLUDE_ALL */ /*#define INCLUDE_STYLE */ /*#define INCLUDE_CALCULATOR */ /*#define INCLUDE_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { long dt; long started; int running = 1; XWindow xw; struct nk_context *ctx; /* X11 */ memset(&xw, 0, sizeof xw); xw.dpy = XOpenDisplay(NULL); if (!xw.dpy) die("Could not open a display; perhaps $DISPLAY is not set?"); xw.root = DefaultRootWindow(xw.dpy); xw.screen = XDefaultScreen(xw.dpy); xw.vis = XDefaultVisual(xw.dpy, xw.screen); xw.cmap = XCreateColormap(xw.dpy,xw.root,xw.vis,AllocNone); xw.swa.colormap = xw.cmap; xw.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask | KeymapStateMask; xw.win = XCreateWindow(xw.dpy, xw.root, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, XDefaultDepth(xw.dpy, xw.screen), InputOutput, xw.vis, CWEventMask | CWColormap, &xw.swa); XStoreName(xw.dpy, xw.win, "X11"); XMapWindow(xw.dpy, xw.win); xw.wm_delete_window = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False); XSetWMProtocols(xw.dpy, xw.win, &xw.wm_delete_window, 1); XGetWindowAttributes(xw.dpy, xw.win, &xw.attr); xw.width = (unsigned int)xw.attr.width; xw.height = (unsigned int)xw.attr.height; /* GUI */ xw.font = nk_xfont_create(xw.dpy, "Arial"); ctx = nk_xlib_init(xw.font, xw.dpy, xw.screen, xw.win, #ifdef NK_XLIB_USE_XFT xw.vis, xw.cmap, #endif xw.width, xw.height); #ifdef INCLUDE_STYLE /*set_style(ctx, THEME_WHITE);*/ /*set_style(ctx, THEME_RED);*/ /*set_style(ctx, THEME_BLUE);*/ /*set_style(ctx, THEME_DARK);*/ #endif while (running) { /* Input */ XEvent evt; started = timestamp(); nk_input_begin(ctx); while (XPending(xw.dpy)) { XNextEvent(xw.dpy, &evt); if (evt.type == ClientMessage) goto cleanup; if (XFilterEvent(&evt, xw.win)) continue; nk_xlib_handle_event(xw.dpy, xw.screen, xw.win, &evt); } nk_input_end(ctx); /* GUI */ if (nk_begin(ctx, "Demo", nk_rect(50, 50, 200, 200), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) { enum {EASY, HARD}; static int op = EASY; static int property = 20; nk_layout_row_static(ctx, 30, 80, 1); if (nk_button_label(ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(ctx, 30, 2); if (nk_option_label(ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(ctx, 25, 1); nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(ctx); if (nk_window_is_hidden(ctx, "Demo")) break; /* -------------- EXAMPLES ---------------- */ #ifdef INCLUDE_CALCULATOR calculator(ctx); #endif #ifdef INCLUDE_OVERVIEW overview(ctx); #endif #ifdef INCLUDE_NODE_EDITOR node_editor(ctx); #endif /* ----------------------------------------- */ /* Draw */ XClearWindow(xw.dpy, xw.win); nk_xlib_render(xw.win, nk_rgb(30,30,30)); XFlush(xw.dpy); /* Timing */ dt = timestamp() - started; if (dt < DTIME) sleep_for(DTIME - dt); } cleanup: nk_xfont_del(xw.dpy, xw.font); nk_xlib_shutdown(); XUnmapWindow(xw.dpy, xw.win); XFreeColormap(xw.dpy, xw.cmap); XDestroyWindow(xw.dpy, xw.win); XCloseDisplay(xw.dpy); return 0; } ================================================ FILE: demo/x11_xft/nuklear_xlib.h ================================================ /* * Nuklear - v1.40.8 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIB_H_ #define NK_XLIB_H_ #include typedef struct XFont XFont; #ifdef NK_XLIB_USE_XFT NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, Visual *vis, Colormap cmap, unsigned w, unsigned h); #else NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, unsigned w, unsigned h); #endif NK_API int nk_xlib_handle_event(Display*, int scrn, Window, XEvent*); NK_API void nk_xlib_render(Drawable screen, struct nk_color clear); NK_API void nk_xlib_shutdown(void); NK_API void nk_xlib_set_font(XFont*); NK_API void nk_xlib_push_font(XFont*); NK_API void nk_xlib_paste(nk_handle, struct nk_text_edit*); NK_API void nk_xlib_copy(nk_handle, const char*, int len); /* Image */ #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename); NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize); #endif /* Font */ NK_API XFont* nk_xfont_create(Display *dpy, const char *name); NK_API void nk_xfont_del(Display *dpy, XFont *font); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIB_IMPLEMENTATION #include #include #include #include #include #ifdef NK_XLIB_USE_XFT #include #endif #include #include #include #ifdef NK_XLIB_IMPLEMENT_STB_IMAGE #define STB_IMAGE_IMPLEMENTATION #endif #ifdef NK_XLIB_INCLUDE_STB_IMAGE #include "../../example/stb_image.h" #endif #ifndef NK_X11_DOUBLE_CLICK_LO #define NK_X11_DOUBLE_CLICK_LO 20 #endif #ifndef NK_X11_DOUBLE_CLICK_HI #define NK_X11_DOUBLE_CLICK_HI 200 #endif typedef struct XSurface XSurface; typedef struct XImageWithAlpha XImageWithAlpha; struct XFont { int ascent; int descent; int height; #ifdef NK_XLIB_USE_XFT XftFont * ft; #else XFontSet set; XFontStruct *xfont; #endif struct nk_user_font handle; }; struct XSurface { GC gc; Display *dpy; int screen; Window root; Drawable drawable; unsigned int w, h; #ifdef NK_XLIB_USE_XFT XftDraw * ftdraw; #endif }; struct XImageWithAlpha { XImage* ximage; GC clipMaskGC; Pixmap clipMask; }; static struct { char *clipboard_data; int clipboard_len; struct nk_text_edit* clipboard_target; Atom xa_clipboard; Atom xa_targets; Atom xa_text; Atom xa_utf8_string; struct nk_context ctx; struct XSurface *surf; Cursor cursor; Display *dpy; Window root; #ifdef NK_XLIB_USE_XFT Visual *vis; Colormap cmap; #endif long last_button_click; } xlib; NK_INTERN long nk_timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } NK_INTERN unsigned long nk_color_from_byte(const nk_byte *c) { unsigned long res = 0; res |= (unsigned long)c[0] << 16; res |= (unsigned long)c[1] << 8; res |= (unsigned long)c[2] << 0; return (res); } NK_INTERN XSurface* nk_xsurf_create(int screen, unsigned int w, unsigned int h) { XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface)); surface->w = w; surface->h = h; surface->dpy = xlib.dpy; surface->screen = screen; surface->root = xlib.root; surface->gc = XCreateGC(xlib.dpy, xlib.root, 0, NULL); XSetLineAttributes(xlib.dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter); surface->drawable = XCreatePixmap(xlib.dpy, xlib.root, w, h, (unsigned int)DefaultDepth(xlib.dpy, screen)); #ifdef NK_XLIB_USE_XFT surface->ftdraw = XftDrawCreate(xlib.dpy, surface->drawable, xlib.vis, xlib.cmap); #endif return surface; } NK_INTERN void nk_xsurf_resize(XSurface *surf, unsigned int w, unsigned int h) { if(!surf) return; if (surf->w == w && surf->h == h) return; surf->w = w; surf->h = h; if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable); surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h, (unsigned int)DefaultDepth(surf->dpy, surf->screen)); #ifdef NK_XLIB_USE_XFT XftDrawChange(surf->ftdraw, surf->drawable); #endif return; } NK_INTERN void nk_xsurf_scissor(XSurface *surf, float x, float y, float w, float h) { XRectangle clip_rect; clip_rect.x = (short)(x-1); clip_rect.y = (short)(y-1); clip_rect.width = (unsigned short)(w+2); clip_rect.height = (unsigned short)(h+2); XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted); #ifdef NK_XLIB_USE_XFT XftDrawSetClipRectangles(surf->ftdraw, 0, 0, &clip_rect, 1); #endif return; } NK_INTERN void nk_xsurf_stroke_line(XSurface *surf, short x0, short y0, short x1, short y1, unsigned int line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_rect(XSurface* surf, short x, short y, unsigned short w, unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); if (r == 0) {XDrawRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);return;} {short xc = x + r; short yc = y + r; short wc = (short)(w - 2 * r); short hc = (short)(h - 2 * r); XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y); XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+hc); XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h); XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, x, yc+hc); XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, y, (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r, (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);} XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_rect(XSurface* surf, short x, short y, unsigned short w, unsigned short h, unsigned short r, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); if (r == 0) {XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h); return;} {short xc = x + r; short yc = y + r; short wc = (short)(w - 2 * r); short hc = (short)(h - 2 * r); XPoint pnts[12]; pnts[0].x = x; pnts[0].y = yc; pnts[1].x = xc; pnts[1].y = yc; pnts[2].x = xc; pnts[2].y = y; pnts[3].x = xc + wc; pnts[3].y = y; pnts[4].x = xc + wc; pnts[4].y = yc; pnts[5].x = x + w; pnts[5].y = yc; pnts[6].x = x + w; pnts[6].y = yc + hc; pnts[7].x = xc + wc; pnts[7].y = yc + hc; pnts[8].x = xc + wc; pnts[8].y = y + h; pnts[9].x = xc; pnts[9].y = y + h; pnts[10].x = xc; pnts[10].y = yc + hc; pnts[11].x = x; pnts[11].y = yc + hc; XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin); XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, x, y, (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r, (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64); XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r, (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);} } NK_INTERN void nk_xsurf_fill_triangle(XSurface *surf, short x0, short y0, short x1, short y1, short x2, short y2, struct nk_color col) { XPoint pnts[3]; unsigned long c = nk_color_from_byte(&col.r); pnts[0].x = (short)x0; pnts[0].y = (short)y0; pnts[1].x = (short)x1; pnts[1].y = (short)y1; pnts[2].x = (short)x2; pnts[2].y = (short)y2; XSetForeground(surf->dpy, surf->gc, c); XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin); } NK_INTERN void nk_xsurf_stroke_triangle(XSurface *surf, short x0, short y0, short x1, short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1); XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2); XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count, struct nk_color col) { int i = 0; #define MAX_POINTS 128 XPoint xpnts[MAX_POINTS]; unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); for (i = 0; i < count && i < MAX_POINTS; ++i) { xpnts[i].x = pnts[i].x; xpnts[i].y = pnts[i].y; } XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin); #undef MAX_POINTS } NK_INTERN void nk_xsurf_stroke_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { int i = 0; unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); for (i = 1; i < count; ++i) XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y); XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_polyline(XSurface *surf, const struct nk_vec2i *pnts, int count, unsigned short line_thickness, struct nk_color col) { int i = 0; unsigned long c = nk_color_from_byte(&col.r); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XSetForeground(surf->dpy, surf->gc, c); for (i = 0; i < count-1; ++i) XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w, unsigned short h, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h, 0, 360 * 64); } NK_INTERN void nk_xsurf_stroke_circle(XSurface *surf, short x, short y, unsigned short w, unsigned short h, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); XSetForeground(surf->dpy, surf->gc, c); XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h, 0, 360 * 64); XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_stroke_curve(XSurface *surf, struct nk_vec2i p1, struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4, unsigned int num_segments, unsigned short line_thickness, struct nk_color col) { unsigned int i_step; float t_step; struct nk_vec2i last = p1; XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); num_segments = NK_MAX(num_segments, 1); t_step = 1.0f/(float)num_segments; for (i_step = 1; i_step <= num_segments; ++i_step) { float t = t_step * (float)i_step; float u = 1.0f - t; float w1 = u*u*u; float w2 = 3*u*u*t; float w3 = 3*u*t*t; float w4 = t * t *t; float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; nk_xsurf_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col); last.x = (short)x; last.y = (short)y; } XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter); } NK_INTERN void nk_xsurf_draw_text(XSurface *surf, short x, short y, unsigned short w, unsigned short h, const char *text, int len, XFont *font, struct nk_color cbg, struct nk_color cfg) { int tx, ty; unsigned long bg = nk_color_from_byte(&cbg.r); unsigned long fg = nk_color_from_byte(&cfg.r); XSetForeground(surf->dpy, surf->gc, bg); XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h); if(!text || !font || !len) return; tx = (int)x; ty = (int)y + font->ascent; #ifdef NK_XLIB_USE_XFT XRenderColor xrc; XftColor color; xrc.red = cfg.r * 257; xrc.green = cfg.g * 257; xrc.blue = cfg.b * 257; xrc.alpha = cfg.a * 257; XftColorAllocValue(surf->dpy, xlib.vis, xlib.cmap, &xrc, &color); XftDrawStringUtf8(surf->ftdraw, &color, font->ft, tx, ty, (FcChar8*)text, len); XftColorFree(surf->dpy, xlib.vis, xlib.cmap, &color); #else XSetForeground(surf->dpy, surf->gc, fg); if(font->set) XmbDrawString(surf->dpy,surf->drawable, font->set, surf->gc, tx, ty, (const char*)text, (int)len); else XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len); #endif return; } #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_INTERN struct nk_image nk_stbi_image_to_xsurf(unsigned char *data, int width, int height, int channels) { XSurface *surf = xlib.surf; struct nk_image img; int bpl = channels; long i, isize = width*height*channels; XImageWithAlpha *aimage = (XImageWithAlpha*)calloc( 1, sizeof(XImageWithAlpha) ); int depth = DefaultDepth(surf->dpy, surf->screen); if (data == NULL) return nk_image_id(0); if (aimage == NULL) return nk_image_id(0); switch (depth){ case 24: bpl = 4; break; case 16: case 15: bpl = 2; break; default: bpl = 1; break; } /* rgba to bgra */ if (channels >= 3){ for (i=0; i < isize; i += channels) { unsigned char red = data[i+2]; unsigned char blue = data[i]; data[i] = red; data[i+2] = blue; } } if (channels == 4){ const unsigned alpha_treshold = 127; aimage->clipMask = XCreatePixmap(surf->dpy, surf->drawable, width, height, 1); if( aimage->clipMask ){ aimage->clipMaskGC = XCreateGC(surf->dpy, aimage->clipMask, 0, 0); XSetForeground(surf->dpy, aimage->clipMaskGC, BlackPixel(surf->dpy, surf->screen)); XFillRectangle(surf->dpy, aimage->clipMask, aimage->clipMaskGC, 0, 0, width, height); XSetForeground(surf->dpy, aimage->clipMaskGC, WhitePixel(surf->dpy, surf->screen)); for (i=0; i < isize; i += channels){ unsigned char alpha = data[i+3]; int div = i / channels; int x = div % width; int y = div / width; if( alpha > alpha_treshold ) XDrawPoint(surf->dpy, aimage->clipMask, aimage->clipMaskGC, x, y); } } } aimage->ximage = XCreateImage(surf->dpy, CopyFromParent, depth, ZPixmap, 0, (char*)data, width, height, bpl*8, bpl * width); img = nk_image_ptr( (void*)aimage); img.h = height; img.w = width; return img; } NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize) { int x,y,n; unsigned char *data; data = stbi_load_from_memory(membuf, membufSize, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename) { int x,y,n; unsigned char *data; data = stbi_load(filename, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } #endif /* NK_XLIB_INCLUDE_STB_IMAGE */ NK_INTERN void nk_xsurf_draw_image(XSurface *surf, short x, short y, unsigned short w, unsigned short h, struct nk_image img, struct nk_color col) { XImageWithAlpha *aimage = img.handle.ptr; if (aimage){ if (aimage->clipMask){ XSetClipMask(surf->dpy, surf->gc, aimage->clipMask); XSetClipOrigin(surf->dpy, surf->gc, x, y); } XPutImage(surf->dpy, surf->drawable, surf->gc, aimage->ximage, 0, 0, x, y, w, h); XSetClipMask(surf->dpy, surf->gc, None); } } void nk_xsurf_image_free(struct nk_image* image) { XSurface *surf = xlib.surf; XImageWithAlpha *aimage = image->handle.ptr; if (!aimage) return; XDestroyImage(aimage->ximage); XFreePixmap(surf->dpy, aimage->clipMask); XFreeGC(surf->dpy, aimage->clipMaskGC); free(aimage); } NK_INTERN void nk_xsurf_clear(XSurface *surf, unsigned long color) { XSetForeground(surf->dpy, surf->gc, color); XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h); } NK_INTERN void nk_xsurf_blit(Drawable target, XSurface *surf, unsigned int w, unsigned int h) { XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, w, h, 0, 0); } NK_INTERN void nk_xsurf_del(XSurface *surf) { #ifdef NK_XLIB_USE_XFT XftDrawDestroy(surf->ftdraw); #endif XFreePixmap(surf->dpy, surf->drawable); XFreeGC(surf->dpy, surf->gc); free(surf); } NK_API XFont* nk_xfont_create(Display *dpy, const char *name) { #ifdef NK_XLIB_USE_XFT XFont *font = (XFont*)calloc(1, sizeof(XFont)); font->ft = XftFontOpenName(dpy, XDefaultScreen(dpy), name); if (!font->ft) { fprintf(stderr, "missing font: %s\n", name); return font; } font->ascent = font->ft->ascent; font->descent = font->ft->descent; font->height = font->ft->height; #else int n; char *def, **missing; XFont *font = (XFont*)calloc(1, sizeof(XFont)); font->set = XCreateFontSet(dpy, name, &missing, &n, &def); if(missing) { while(n--) fprintf(stderr, "missing fontset: %s\n", missing[n]); XFreeStringList(missing); } if(font->set) { XFontStruct **xfonts; char **font_names; XExtentsOfFontSet(font->set); n = XFontsOfFontSet(font->set, &xfonts, &font_names); while(n--) { font->ascent = NK_MAX(font->ascent, (*xfonts)->ascent); font->descent = NK_MAX(font->descent,(*xfonts)->descent); xfonts++; } } else { if(!(font->xfont = XLoadQueryFont(dpy, name)) && !(font->xfont = XLoadQueryFont(dpy, "fixed"))) { free(font); return 0; } font->ascent = font->xfont->ascent; font->descent = font->xfont->descent; } font->height = font->ascent + font->descent; #endif return font; } NK_INTERN float nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len) { XFont *font = (XFont*)handle.ptr; if(!font || !text) return 0; #ifdef NK_XLIB_USE_XFT XGlyphInfo g; XftTextExtentsUtf8(xlib.dpy, font->ft, (FcChar8*)text, len, &g); return g.xOff; #else XRectangle r; if(font->set) { XmbTextExtents(font->set, (const char*)text, len, NULL, &r); return (float)r.width; } else{ int w = XTextWidth(font->xfont, (const char*)text, len); return (float)w; } #endif } NK_API void nk_xfont_del(Display *dpy, XFont *font) { if(!font) return; #ifdef NK_XLIB_USE_XFT XftFontClose(dpy, font->ft); #else if(font->set) XFreeFontSet(dpy, font->set); else XFreeFont(dpy, font->xfont); #endif free(font); } NK_API struct nk_context* nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root, #ifdef NK_XLIB_USE_XFT Visual *vis, Colormap cmap, #endif unsigned int w, unsigned int h) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; xlib.dpy = dpy; xlib.root = root; #ifdef NK_XLIB_USE_XFT xlib.vis = vis; xlib.cmap = cmap; #endif if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; xlib.xa_clipboard = XInternAtom(dpy, "CLIPBOARD", False); xlib.xa_targets = XInternAtom(dpy, "TARGETS", False); xlib.xa_text = XInternAtom(dpy, "TEXT", False); xlib.xa_utf8_string = XInternAtom(dpy, "UTF8_STRING", False); /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1); if (blank == None) return 0; xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} xlib.surf = nk_xsurf_create(screen, w, h); nk_init_default(&xlib.ctx, font); return &xlib.ctx; } NK_API void nk_xlib_set_font(XFont *xfont) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; nk_style_set_font(&xlib.ctx, font); } NK_API void nk_xlib_push_font(XFont *xfont) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; nk_style_push_font(&xlib.ctx, font); } NK_API void nk_xlib_paste(nk_handle handle, struct nk_text_edit* edit) { NK_UNUSED(handle); /* Paste in X is asynchronous, so can not use a temporary text edit */ NK_ASSERT(edit != &xlib.ctx.text_edit && "Paste not supported for temporary editors"); xlib.clipboard_target = edit; /* Request the contents of the primary buffer */ XConvertSelection(xlib.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xlib.root, CurrentTime); } NK_API void nk_xlib_copy(nk_handle handle, const char* str, int len) { NK_UNUSED(handle); free(xlib.clipboard_data); xlib.clipboard_len = 0; xlib.clipboard_data = malloc((size_t)len); if (xlib.clipboard_data) { memcpy(xlib.clipboard_data, str, (size_t)len); xlib.clipboard_len = len; XSetSelectionOwner(xlib.dpy, XA_PRIMARY, xlib.root, CurrentTime); XSetSelectionOwner(xlib.dpy, xlib.xa_clipboard, xlib.root, CurrentTime); } } NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt) { struct nk_context *ctx = &xlib.ctx; /* optional grabbing behavior */ if (ctx->input.mouse.grab) { XDefineCursor(xlib.dpy, xlib.root, xlib.cursor); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0, (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y); XUndefineCursor(xlib.dpy, xlib.root); ctx->input.mouse.ungrab = 0; } if (evt->type == KeyPress || evt->type == KeyRelease) { /* Key handler */ int ret, down = (evt->type == KeyPress); KeySym *code = XGetKeyboardMapping(xlib.surf->dpy, (KeyCode)evt->xkey.keycode, 1, &ret); if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down); else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, down); else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down); else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down); else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down); else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down); else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down); else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_Escape) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down); else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } else { if (*code == 'c' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_COPY, down); else if (*code == 'v' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_PASTE, down); else if (*code == 'x' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_CUT, down); else if (*code == 'z' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_UNDO, down); else if (*code == 'r' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_REDO, down); else if (*code == XK_Left && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); else if (*code == XK_Right && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); else if (*code == 'b' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down); else if (*code == 'e' && (evt->xkey.state & ControlMask)) nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down); else { if (*code == 'i') nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(ctx, buf); } } } XFree(code); return 1; } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { /* Button handler */ int down = (evt->type == ButtonPress); const int x = evt->xbutton.x, y = evt->xbutton.y; if (evt->xbutton.button == Button1) { if (down) { /* Double-Click Button handler */ long dt = nk_timestamp() - xlib.last_button_click; if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); xlib.last_button_click = nk_timestamp(); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else if (evt->xbutton.button == Button2) nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); else if (evt->xbutton.button == Button3) nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); else if (evt->xbutton.button == Button4) nk_input_scroll(ctx, nk_vec2(0, 1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(ctx, nk_vec2(0, -1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(ctx, x, y); if (ctx->input.mouse.grabbed) { ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; XWarpPointer(xlib.dpy, None, xlib.surf->root, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); } return 1; } else if (evt->type == Expose || evt->type == ConfigureNotify) { /* Window resize handler */ unsigned int width, height; XWindowAttributes attr; XGetWindowAttributes(dpy, win, &attr); width = (unsigned int)attr.width; height = (unsigned int)attr.height; nk_xsurf_resize(xlib.surf, width, height); return 1; } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } else if (evt->type == SelectionClear) { free(xlib.clipboard_data); xlib.clipboard_data = NULL; xlib.clipboard_len = 0; return 1; } else if (evt->type == SelectionRequest) { XEvent reply; reply.xselection.type = SelectionNotify; reply.xselection.requestor = evt->xselectionrequest.requestor; reply.xselection.selection = evt->xselectionrequest.selection; reply.xselection.target = evt->xselectionrequest.target; reply.xselection.property = None; /* Default refuse */ reply.xselection.time = evt->xselectionrequest.time; if (reply.xselection.target == xlib.xa_targets) { Atom target_list[4]; target_list[0] = xlib.xa_targets; target_list[1] = xlib.xa_text; target_list[2] = xlib.xa_utf8_string; target_list[3] = XA_STRING; reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, XA_ATOM, 32, PropModeReplace, (unsigned char*)&target_list, 4); } else if (xlib.clipboard_data && (reply.xselection.target == xlib.xa_text || reply.xselection.target == xlib.xa_utf8_string || reply.xselection.target == XA_STRING)) { reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, reply.xselection.target, 8, PropModeReplace, (unsigned char*)xlib.clipboard_data, xlib.clipboard_len); } XSendEvent(evt->xselection.display, evt->xselectionrequest.requestor, True, 0, &reply); XFlush(evt->xselection.display); return 1; } else if (evt->type == SelectionNotify && xlib.clipboard_target) { if ((evt->xselection.target != XA_STRING) && (evt->xselection.target != xlib.xa_utf8_string) && (evt->xselection.target != xlib.xa_text)) return 1; {Atom actual_type; int actual_format; unsigned long pos = 0, len, remain; unsigned char* data = 0; do { XGetWindowProperty(dpy, win, XA_PRIMARY, (int)pos, 1024, False, AnyPropertyType, &actual_type, &actual_format, &len, &remain, &data); if (len && data) nk_textedit_text(xlib.clipboard_target, (char*)data, (int)len); if (data != 0) XFree(data); pos += (len * (unsigned long)actual_format) / 32; } while (remain != 0);} return 1; } return 0; } NK_API void nk_xlib_shutdown(void) { nk_xsurf_del(xlib.surf); nk_free(&xlib.ctx); XFreeCursor(xlib.dpy, xlib.cursor); NK_MEMSET(&xlib, 0, sizeof(xlib)); } NK_API void nk_xlib_render(Drawable screen, struct nk_color clear) { const struct nk_command *cmd; struct nk_context *ctx = &xlib.ctx; XSurface *surf = xlib.surf; nk_xsurf_clear(xlib.surf, nk_color_from_byte(&clear.r)); nk_foreach(cmd, &xlib.ctx) { switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; nk_xsurf_scissor(surf, s->x, s->y, s->w, s->h); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line *)cmd; nk_xsurf_stroke_line(surf, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; nk_xsurf_stroke_rect(surf, r->x, r->y, NK_MAX(r->w -r->line_thickness, 0), NK_MAX(r->h - r->line_thickness, 0), (unsigned short)r->rounding, r->line_thickness, r->color); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; nk_xsurf_fill_rect(surf, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->color); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; nk_xsurf_stroke_circle(surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_xsurf_fill_circle(surf, c->x, c->y, c->w, c->h, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; nk_xsurf_stroke_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; nk_xsurf_fill_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color); } break; case NK_COMMAND_POLYGON: { const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; nk_xsurf_stroke_polygon(surf, p->points, p->point_count, p->line_thickness,p->color); } break; case NK_COMMAND_POLYGON_FILLED: { const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; nk_xsurf_fill_polygon(surf, p->points, p->point_count, p->color); } break; case NK_COMMAND_POLYLINE: { const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; nk_xsurf_stroke_polyline(surf, p->points, p->point_count, p->line_thickness, p->color); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_xsurf_draw_text(surf, t->x, t->y, t->w, t->h, (const char*)t->string, t->length, (XFont*)t->font->userdata.ptr, t->background, t->foreground); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; nk_xsurf_stroke_curve(surf, q->begin, q->ctrl[0], q->ctrl[1], q->end, 22, q->line_thickness, q->color); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image *)cmd; nk_xsurf_draw_image(surf, i->x, i->y, i->w, i->h, i->img, i->col); } break; case NK_COMMAND_RECT_MULTI_COLOR: case NK_COMMAND_ARC: case NK_COMMAND_ARC_FILLED: case NK_COMMAND_CUSTOM: default: break; } } nk_clear(ctx); nk_xsurf_blit(screen, surf, surf->w, surf->h); } #endif ================================================ FILE: doc/Makefile ================================================ # Install BIN = doc # Flags CFLAGS += -std=c99 -pedantic -O2 SRC = stddoc.c OBJ = $(SRC:.c=.o) ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS = else UNAME_S := $(shell uname -s) ifeq ($(UNAME_S),Darwin) LIBS = else LIBS = endif endif $(BIN): rm -f $(BIN) $(OBJS) $(CC) $(SRC) $(CFLAGS) -o $(BIN) ================================================ FILE: doc/build.sh ================================================ #!/bin/sh cat ../nuklear.h|./doc > nuklear.html ================================================ FILE: doc/nuklear.html ================================================ # Nuklear ![](https://cloud.githubusercontent.com/assets/8057201/11761525/ae06f0ca-a0c6-11e5-819d-5610b25f6ef4.gif) ## Contents 1. About section 2. Highlights section 3. Features section 4. Usage section 1. Flags section 2. Constants section 3. Dependencies section 5. Example section 6. API section 1. Context section 2. Input section 3. Drawing section 4. Window section 5. Layouting section 6. Groups section 7. Tree section 8. Properties section 7. License section 8. Changelog section 9. Gallery section 10. Credits section ## About This is a minimal state immediate mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default renderbackend or OS window and input handling but instead provides a very modular library approach by using simple input state for input and draw commands describing primitive shapes as output. So instead of providing a layered library that tries to abstract over a number of platform and render backends it only focuses on the actual UI. ## Highlights - Graphical user interface toolkit - Single header library - Written in C89 (a.k.a. ANSI C or ISO C90) - Small codebase (~18kLOC) - Focus on portability, efficiency and simplicity - No dependencies (not even the standard library if not wanted) - Fully skinnable and customizable - Low memory footprint with total memory control if needed or wanted - UTF-8 support - No global or hidden state - Customizable library modules (you can compile and use only what you need) - Optional font baker and vertex buffer output ## Features - Absolutely no platform dependent code - Memory management control ranging from/to - Ease of use by allocating everything from standard library - Control every byte of memory inside the library - Font handling control ranging from/to - Use your own font implementation for everything - Use this libraries internal font baking and handling API - Drawing output control ranging from/to - Simple shapes for more high level APIs which already have drawing capabilities - Hardware accessible anti-aliased vertex buffer output - Customizable colors and properties ranging from/to - Simple changes to color by filling a simple color table - Complete control with ability to use skinning to decorate widgets - Bendable UI library with widget ranging from/to - Basic widgets like buttons, checkboxes, slider, ... - Advanced widget like abstract comboboxes, contextual menus,... - Compile time configuration to only compile what you need - Subset which can be used if you do not want to link or use the standard library - Can be easily modified to only update on user input instead of frame updates ## Usage This library is self contained in one single header file and can be used either in header only mode or in implementation mode. The header only mode is used by default when included and allows including this header in other headers and does not contain the actual implementation.

The implementation mode requires to define the preprocessor macro NK_IMPLEMENTATION in *one* .c/.cpp file before #includeing this file, e.g.: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~C #define NK_IMPLEMENTATION #include "nuklear.h" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Also optionally define the symbols listed in the section "OPTIONAL DEFINES" below in header and implementation mode if you want to use additional functionality or need more control over the library. !!! WARNING Every time nuklear is included define the same compiler flags. This very important not doing so could lead to compiler errors or even worse stack corruptions. ### Flags Flag | Description --------------------------------|------------------------------------------ NK_PRIVATE | If defined declares all functions as static, so they can only be accessed inside the file that contains the implementation NK_INCLUDE_FIXED_TYPES | If defined it will include header `` for fixed sized types otherwise nuklear tries to select the correct type. If that fails it will throw a compiler error and you have to select the correct types yourself. NK_INCLUDE_DEFAULT_ALLOCATOR | If defined it will include header `` and provide additional functions to use this library without caring for memory allocation control and therefore ease memory management. NK_INCLUDE_STANDARD_IO | If defined it will include header `` and provide additional functions depending on file loading. NK_INCLUDE_STANDARD_VARARGS | If defined it will include header and provide additional functions depending on file loading. NK_INCLUDE_VERTEX_BUFFER_OUTPUT | Defining this adds a vertex draw command list backend to this library, which allows you to convert queue commands into vertex draw commands. This is mainly if you need a hardware accessible format for OpenGL, DirectX, Vulkan, Metal,... NK_INCLUDE_FONT_BAKING | Defining this adds `stb_truetype` and `stb_rect_pack` implementation to this library and provides font baking and rendering. If you already have font handling or do not want to use this font handler you don't have to define it. NK_INCLUDE_DEFAULT_FONT | Defining this adds the default font: ProggyClean.ttf into this library which can be loaded into a font atlas and allows using this library without having a truetype font NK_INCLUDE_COMMAND_USERDATA | Defining this adds a userdata pointer into each command. Can be useful for example if you want to provide custom shaders depending on the used widget. Can be combined with the style structures. NK_BUTTON_TRIGGER_ON_RELEASE | Different platforms require button clicks occurring either on buttons being pressed (up to down) or released (down to up). By default this library will react on buttons being pressed, but if you define this it will only trigger if a button is released. NK_ZERO_COMMAND_MEMORY | Defining this will zero out memory for each drawing command added to a drawing queue (inside nk_command_buffer_push). Zeroing command memory is very useful for fast checking (using memcmp) if command buffers are equal and avoid drawing frames when nothing on screen has changed since previous frame. NK_UINT_DRAW_INDEX | Defining this will set the size of vertex index elements when using NK_VERTEX_BUFFER_OUTPUT to 32bit instead of the default of 16bit NK_KEYSTATE_BASED_INPUT | Define this if your backend uses key state for each frame rather than key press/release events !!! WARNING The following flags will pull in the standard C library: - NK_INCLUDE_DEFAULT_ALLOCATOR - NK_INCLUDE_STANDARD_IO - NK_INCLUDE_STANDARD_VARARGS !!! WARNING The following flags if defined need to be defined for both header and implementation: - NK_INCLUDE_FIXED_TYPES - NK_INCLUDE_DEFAULT_ALLOCATOR - NK_INCLUDE_STANDARD_VARARGS - NK_INCLUDE_VERTEX_BUFFER_OUTPUT - NK_INCLUDE_FONT_BAKING - NK_INCLUDE_DEFAULT_FONT - NK_INCLUDE_STANDARD_VARARGS - NK_INCLUDE_COMMAND_USERDATA - NK_UINT_DRAW_INDEX ### Constants Define | Description --------------------------------|--------------------------------------- NK_BUFFER_DEFAULT_INITIAL_SIZE | Initial buffer size allocated by all buffers while using the default allocator functions included by defining NK_INCLUDE_DEFAULT_ALLOCATOR. If you don't want to allocate the default 4k memory then redefine it. NK_MAX_NUMBER_BUFFER | Maximum buffer size for the conversion buffer between float and string Under normal circumstances this should be more than sufficient. NK_INPUT_MAX | Defines the max number of bytes which can be added as text input in one frame. Under normal circumstances this should be more than sufficient. !!! WARNING The following constants if defined need to be defined for both header and implementation: - NK_MAX_NUMBER_BUFFER - NK_BUFFER_DEFAULT_INITIAL_SIZE - NK_INPUT_MAX ### Dependencies Function | Description ------------|--------------------------------------------------------------- NK_ASSERT | If you don't define this, nuklear will use with assert(). NK_MEMSET | You can define this to 'memset' or your own memset implementation replacement. If not nuklear will use its own version. NK_MEMCPY | You can define this to 'memcpy' or your own memcpy implementation replacement. If not nuklear will use its own version. NK_SQRT | You can define this to 'sqrt' or your own sqrt implementation replacement. If not nuklear will use its own slow and not highly accurate version. NK_SIN | You can define this to 'sinf' or your own sine implementation replacement. If not nuklear will use its own approximation implementation. NK_COS | You can define this to 'cosf' or your own cosine implementation replacement. If not nuklear will use its own approximation implementation. NK_STRTOD | You can define this to `strtod` or your own string to double conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). NK_DTOA | You can define this to `dtoa` or your own double to string conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). NK_VSNPRINTF| If you define `NK_INCLUDE_STANDARD_VARARGS` as well as `NK_INCLUDE_STANDARD_IO` and want to be safe define this to `vsnprintf` on compilers supporting later versions of C or C++. By default nuklear will check for your stdlib version in C as well as compiler version in C++. if `vsnprintf` is available it will define it to `vsnprintf` directly. If not defined and if you have older versions of C or C++ it will be defined to `vsprintf` which is unsafe. !!! WARNING The following dependencies will pull in the standard C library if not redefined: - NK_ASSERT !!! WARNING The following dependencies if defined need to be defined for both header and implementation: - NK_ASSERT !!! WARNING The following dependencies if defined need to be defined only for the implementation part: - NK_MEMSET - NK_MEMCPY - NK_SQRT - NK_SIN - NK_COS - NK_STRTOD - NK_DTOA - NK_VSNPRINTF ## Example ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c // init gui state enum {EASY, HARD}; static int op = EASY; static float value = 0.6f; static int i = 20; struct nk_context ctx; nk_init_fixed(&ctx, calloc(1, MAX_MEMORY), MAX_MEMORY, &font); if (nk_begin(&ctx, "Show", nk_rect(50, 50, 220, 220), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) { // fixed widget pixel width nk_layout_row_static(&ctx, 30, 80, 1); if (nk_button_label(&ctx, "button")) { // event handling } // fixed widget window ratio width nk_layout_row_dynamic(&ctx, 30, 2); if (nk_option_label(&ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(&ctx, "hard", op == HARD)) op = HARD; // custom widget pixel width nk_layout_row_begin(&ctx, NK_STATIC, 30, 2); { nk_layout_row_push(&ctx, 50); nk_label(&ctx, "Volume:", NK_TEXT_LEFT); nk_layout_row_push(&ctx, 110); nk_slider_float(&ctx, 0, &value, 1.0f, 0.1f); } nk_layout_row_end(&ctx); } nk_end(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ![](https://cloud.githubusercontent.com/assets/8057201/10187981/584ecd68-675c-11e5-897c-822ef534a876.png) ## API ### Context Contexts are the main entry point and the majestro of nuklear and contain all required state. They are used for window, memory, input, style, stack, commands and time management and need to be passed into all nuklear GUI specific functions. #### Usage To use a context it first has to be initialized which can be achieved by calling one of either `nk_init_default`, `nk_init_fixed`, `nk_init`, `nk_init_custom`. Each takes in a font handle and a specific way of handling memory. Memory control hereby ranges from standard library to just specifying a fixed sized block of memory which nuklear has to manage itself from. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { // [...] nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description --------------------|------------------------------------------------------- __nk_init_default__ | Initializes context with standard library memory allocation (malloc,free) __nk_init_fixed__ | Initializes context from single fixed size memory block __nk_init__ | Initializes context with memory allocator callbacks for alloc and free __nk_init_custom__ | Initializes context from two buffers. One for draw commands the other for window/panel/table allocations __nk_clear__ | Called at the end of the frame to reset and prepare the context for the next frame __nk_free__ | Shutdown and free all memory allocated inside the context __nk_set_user_data__| Utility function to pass user data to draw command #### nk_init_default Initializes a `nk_context` struct with a default standard library allocator. Should be used if you don't want to be bothered with memory management in nuklear. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_init_default(struct nk_context *ctx, const struct nk_user_font *font); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|--------------------------------------------------------------- __ctx__ | Must point to an either stack or heap allocated `nk_context` struct __font__ | Must point to a previously initialized font handle for more info look at font documentation Returns either `false(0)` on failure or `true(1)` on success. #### nk_init_fixed Initializes a `nk_context` struct from single fixed size memory block Should be used if you want complete control over nuklear's memory management. Especially recommended for system with little memory or systems with virtual memory. For the later case you can just allocate for example 16MB of virtual memory and only the required amount of memory will actually be committed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_init_fixed(struct nk_context *ctx, void *memory, nk_size size, const struct nk_user_font *font); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ !!! Warning make sure the passed memory block is aligned correctly for `nk_draw_commands`. Parameter | Description ------------|-------------------------------------------------------------- __ctx__ | Must point to an either stack or heap allocated `nk_context` struct __memory__ | Must point to a previously allocated memory block __size__ | Must contain the total size of __memory__ __font__ | Must point to a previously initialized font handle for more info look at font documentation Returns either `false(0)` on failure or `true(1)` on success. #### nk_init Initializes a `nk_context` struct with memory allocation callbacks for nuklear to allocate memory from. Used internally for `nk_init_default` and provides a kitchen sink allocation interface to nuklear. Can be useful for cases like monitoring memory consumption. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|--------------------------------------------------------------- __ctx__ | Must point to an either stack or heap allocated `nk_context` struct __alloc__ | Must point to a previously allocated memory allocator __font__ | Must point to a previously initialized font handle for more info look at font documentation Returns either `false(0)` on failure or `true(1)` on success. #### nk_init_custom Initializes a `nk_context` struct from two different either fixed or growing buffers. The first buffer is for allocating draw commands while the second buffer is used for allocating windows, panels and state tables. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font *font); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|--------------------------------------------------------------- __ctx__ | Must point to an either stack or heap allocated `nk_context` struct __cmds__ | Must point to a previously initialized memory buffer either fixed or dynamic to store draw commands into __pool__ | Must point to a previously initialized memory buffer either fixed or dynamic to store windows, panels and tables __font__ | Must point to a previously initialized font handle for more info look at font documentation Returns either `false(0)` on failure or `true(1)` on success. #### nk_clear Resets the context state at the end of the frame. This includes mostly garbage collector tasks like removing windows or table not called and therefore used anymore. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_clear(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct #### nk_free Frees all memory allocated by nuklear. Not needed if context was initialized with `nk_init_fixed`. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_free(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct #### nk_set_user_data Sets the currently passed userdata passed down into each draw command. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_set_user_data(struct nk_context *ctx, nk_handle data); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|-------------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __data__ | Handle with either pointer or index to be passed into every draw commands ### Input The input API is responsible for holding the current input state composed of mouse, key and text input states. It is worth noting that no direct OS or window handling is done in nuklear. Instead all input state has to be provided by platform specific code. This on one hand expects more work from the user and complicates usage but on the other hand provides simple abstraction over a big number of platforms, libraries and other already provided functionality. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { // [...] } } nk_input_end(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Usage Input state needs to be provided to nuklear by first calling `nk_input_begin` which resets internal state like delta mouse position and button transistions. After `nk_input_begin` all current input state needs to be provided. This includes mouse motion, button and key pressed and released, text input and scrolling. Both event- or state-based input handling are supported by this API and should work without problems. Finally after all input state has been mirrored `nk_input_end` needs to be called to finish input process. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { Event evt; nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { // [...] } } nk_input_end(&ctx); // [...] nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description --------------------|------------------------------------------------------- __nk_input_begin__ | Begins the input mirroring process. Needs to be called before all other `nk_input_xxx` calls __nk_input_motion__ | Mirrors mouse cursor position __nk_input_key__ | Mirrors key state with either pressed or released __nk_input_button__ | Mirrors mouse button state with either pressed or released __nk_input_scroll__ | Mirrors mouse scroll values __nk_input_char__ | Adds a single ASCII text character into an internal text buffer __nk_input_glyph__ | Adds a single multi-byte UTF-8 character into an internal text buffer __nk_input_unicode__| Adds a single unicode rune into an internal text buffer __nk_input_end__ | Ends the input mirroring process by calculating state changes. Don't call any `nk_input_xxx` function referenced above after this call #### nk_input_begin Begins the input mirroring process by resetting text, scroll mouse, previous mouse position and movement as well as key state transitions, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_begin(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct #### nk_input_motion Mirrors current mouse position to nuklear ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_motion(struct nk_context *ctx, int x, int y); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __x__ | Must hold an integer describing the current mouse cursor x-position __y__ | Must hold an integer describing the current mouse cursor y-position #### nk_input_key Mirrors the state of a specific key to nuklear ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_key(struct nk_context*, enum nk_keys key, int down); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __key__ | Must be any value specified in enum `nk_keys` that needs to be mirrored __down__ | Must be 0 for key is up and 1 for key is down #### nk_input_button Mirrors the state of a specific mouse button to nuklear ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_button(struct nk_context *ctx, enum nk_buttons btn, int x, int y, int down); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __btn__ | Must be any value specified in enum `nk_buttons` that needs to be mirrored __x__ | Must contain an integer describing mouse cursor x-position on click up/down __y__ | Must contain an integer describing mouse cursor y-position on click up/down __down__ | Must be 0 for key is up and 1 for key is down #### nk_input_scroll Copies the last mouse scroll value to nuklear. Is generally a scroll value. So does not have to come from mouse and could also originate TODO finish this sentence ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_scroll(struct nk_context *ctx, struct nk_vec2 val); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __val__ | vector with both X- as well as Y-scroll value #### nk_input_char Copies a single ASCII character into an internal text buffer This is basically a helper function to quickly push ASCII characters into nuklear. !!! Note Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_char(struct nk_context *ctx, char c); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __c__ | Must be a single ASCII character preferable one that can be printed #### nk_input_glyph Converts an encoded unicode rune into UTF-8 and copies the result into an internal text buffer. !!! Note Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_glyph(struct nk_context *ctx, const nk_glyph g); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __g__ | UTF-32 unicode codepoint #### nk_input_unicode Converts a unicode rune into UTF-8 and copies the result into an internal text buffer. !!! Note Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_unicode(struct nk_context*, nk_rune rune); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct __rune__ | UTF-32 unicode codepoint #### nk_input_end End the input mirroring process by resetting mouse grabbing state to ensure the mouse cursor is not grabbed indefinitely. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_input_end(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to a previously initialized `nk_context` struct ### Drawing This library was designed to be render backend agnostic so it does not draw anything to screen directly. Instead all drawn shapes, widgets are made of, are buffered into memory and make up a command queue. Each frame therefore fills the command buffer with draw commands that then need to be executed by the user and his own render backend. After that the command buffer needs to be cleared and a new frame can be started. It is probably important to note that the command buffer is the main drawing API and the optional vertex buffer API only takes this format and converts it into a hardware accessible format. #### Usage To draw all draw commands accumulated over a frame you need your own render backend able to draw a number of 2D primitives. This includes at least filled and stroked rectangles, circles, text, lines, triangles and scissors. As soon as this criterion is met you can iterate over each draw command and execute each draw command in a interpreter like fashion: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case //...: //[...] } } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In program flow context draw commands need to be executed after input has been gathered and the complete UI with windows and their contained widgets have been executed and before calling `nk_clear` which frees all previously allocated draw commands. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { Event evt; nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { [...] } } nk_input_end(&ctx); // // [...] // const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case ...: // [...] } nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You probably noticed that you have to draw all of the UI each frame which is quite wasteful. While the actual UI updating loop is quite fast rendering without actually needing it is not. So there are multiple things you could do. First is only update on input. This of course is only an option if your application only depends on the UI and does not require any outside calculations. If you actually only update on input make sure to update the UI two times each frame and call `nk_clear` directly after the first pass and only draw in the second pass. In addition it is recommended to also add additional timers to make sure the UI is not drawn more than a fixed number of frames per second. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { // [...wait for input ] // [...do two UI passes ...] do_ui(...) nk_clear(&ctx); do_ui(...) // // draw const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case ...: //[...] } nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The second probably more applicable trick is to only draw if anything changed. It is not really useful for applications with continuous draw loop but quite useful for desktop applications. To actually get nuklear to only draw on changes you first have to define `NK_ZERO_COMMAND_MEMORY` and allocate a memory buffer that will store each unique drawing output. After each frame you compare the draw command memory inside the library with your allocated buffer by memcmp. If memcmp detects differences you have to copy the command buffer into the allocated buffer and then draw like usual (this example uses fixed memory but you could use dynamically allocated memory). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c //[... other defines ...] #define NK_ZERO_COMMAND_MEMORY #include "nuklear.h" // // setup context struct nk_context ctx; void *last = calloc(1,64*1024); void *buf = calloc(1,64*1024); nk_init_fixed(&ctx, buf, 64*1024); // // loop while (1) { // [...input...] // [...ui...] void *cmds = nk_buffer_memory(&ctx.memory); if (memcmp(cmds, last, ctx.memory.allocated)) { memcpy(last,cmds,ctx.memory.allocated); const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case ...: // [...] } } } nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Finally while using draw commands makes sense for higher abstracted platforms like X11 and Win32 or drawing libraries it is often desirable to use graphics hardware directly. Therefore it is possible to just define `NK_INCLUDE_VERTEX_BUFFER_OUTPUT` which includes optional vertex output. To access the vertex output you first have to convert all draw commands into vertexes by calling `nk_convert` which takes in your preferred vertex format. After successfully converting all draw commands just iterate over and execute all vertex draw commands: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c // fill configuration struct your_vertex { float pos[2]; // important to keep it to 2 floats float uv[2]; unsigned char col[4]; }; struct nk_convert_config cfg = {}; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, pos)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct your_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; cfg.shape_AA = NK_ANTI_ALIASING_ON; cfg.line_AA = NK_ANTI_ALIASING_ON; cfg.vertex_layout = vertex_layout; cfg.vertex_size = sizeof(struct your_vertex); cfg.vertex_alignment = NK_ALIGNOF(struct your_vertex); cfg.circle_segment_count = 22; cfg.curve_segment_count = 22; cfg.arc_segment_count = 22; cfg.global_alpha = 1.0f; cfg.null = dev->null; // // setup buffers and convert struct nk_buffer cmds, verts, idx; nk_buffer_init_default(&cmds); nk_buffer_init_default(&verts); nk_buffer_init_default(&idx); nk_convert(&ctx, &cmds, &verts, &idx, &cfg); // // draw nk_draw_foreach(cmd, &ctx, &cmds) { if (!cmd->elem_count) continue; //[...] } nk_buffer_free(&cms); nk_buffer_free(&verts); nk_buffer_free(&idx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description --------------------|------------------------------------------------------- __nk__begin__ | Returns the first draw command in the context draw command list to be drawn __nk__next__ | Increments the draw command iterator to the next command inside the context draw command list __nk_foreach__ | Iterates over each draw command inside the context draw command list __nk_convert__ | Converts from the abstract draw commands list into a hardware accessible vertex format __nk_draw_begin__ | Returns the first vertex command in the context vertex draw list to be executed __nk__draw_next__ | Increments the vertex command iterator to the next command inside the context vertex command list __nk__draw_end__ | Returns the end of the vertex draw list __nk_draw_foreach__ | Iterates over each vertex draw command inside the vertex draw list #### nk__begin Returns a draw command list iterator to iterate all draw commands accumulated over one frame. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_command* nk__begin(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | must point to an previously initialized `nk_context` struct at the end of a frame Returns draw command pointer pointing to the first command inside the draw command list #### nk__next Returns draw command pointer pointing to the next command inside the draw command list ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_command* nk__next(struct nk_context*, const struct nk_command*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame __cmd__ | Must point to an previously a draw command either returned by `nk__begin` or `nk__next` Returns draw command pointer pointing to the next command inside the draw command list #### nk_foreach Iterates over each draw command inside the context draw command list ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_foreach(c, ctx) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame __cmd__ | Command pointer initialized to NULL Iterates over each draw command inside the context draw command list #### nk_convert Converts all internal draw commands into vertex draw commands and fills three buffers with vertexes, vertex draw commands and vertex indices. The vertex format as well as some other configuration values have to be configured by filling out a `nk_convert_config` struct. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c nk_flags nk_convert(struct nk_context *ctx, struct nk_buffer *cmds, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame __cmds__ | Must point to a previously initialized buffer to hold converted vertex draw commands __vertices__| Must point to a previously initialized buffer to hold all produced vertices __elements__| Must point to a previously initialized buffer to hold all produced vertex indices __config__ | Must point to a filled out `nk_config` struct to configure the conversion process Returns one of enum nk_convert_result error codes Parameter | Description --------------------------------|----------------------------------------------------------- NK_CONVERT_SUCCESS | Signals a successful draw command to vertex buffer conversion NK_CONVERT_INVALID_PARAM | An invalid argument was passed in the function call NK_CONVERT_COMMAND_BUFFER_FULL | The provided buffer for storing draw commands is full or failed to allocate more memory NK_CONVERT_VERTEX_BUFFER_FULL | The provided buffer for storing vertices is full or failed to allocate more memory NK_CONVERT_ELEMENT_BUFFER_FULL | The provided buffer for storing indicies is full or failed to allocate more memory #### nk__draw_begin Returns a draw vertex command buffer iterator to iterate over the vertex draw command buffer ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_draw_command* nk__draw_begin(const struct nk_context*, const struct nk_buffer*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer Returns vertex draw command pointer pointing to the first command inside the vertex draw command buffer #### nk__draw_end Returns the vertex draw command at the end of the vertex draw command buffer ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_draw_command* nk__draw_end(const struct nk_context *ctx, const struct nk_buffer *buf); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer #### nk__draw_next Increments the vertex draw command buffer iterator ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c const struct nk_draw_command* nk__draw_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __cmd__ | Must point to an previously either by `nk__draw_begin` or `nk__draw_next` returned vertex draw command __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer #### nk_draw_foreach Iterates over each vertex draw command inside a vertex draw command buffer ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_draw_foreach(cmd,ctx, b) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __cmd__ | `nk_draw_command`iterator set to NULL __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame ### Window Windows are the main persistent state used inside nuklear and are life time controlled by simply "retouching" (i.e. calling) each window each frame. All widgets inside nuklear can only be added inside the function pair `nk_begin_xxx` and `nk_end`. Calling any widgets outside these two functions will result in an assert in debug or no state change in release mode.

Each window holds frame persistent state like position, size, flags, state tables, and some garbage collected internal persistent widget state. Each window is linked into a window stack list which determines the drawing and overlapping order. The topmost window thereby is the currently active window.

To change window position inside the stack occurs either automatically by user input by being clicked on or programmatically by calling `nk_window_focus`. Windows by default are visible unless explicitly being defined with flag `NK_WINDOW_HIDDEN`, the user clicked the close button on windows with flag `NK_WINDOW_CLOSABLE` or if a window was explicitly hidden by calling `nk_window_show`. To explicitly close and destroy a window call `nk_window_close`.

#### Usage To create and keep a window you have to call one of the two `nk_begin_xxx` functions to start window declarations and `nk_end` at the end. Furthermore it is recommended to check the return value of `nk_begin_xxx` and only process widgets inside the window if the value is not 0. Either way you have to call `nk_end` at the end of window declarations. Furthermore, do not attempt to nest `nk_begin_xxx` calls which will hopefully result in an assert or if not in a segmentation fault. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // [... widgets ...] } nk_end(ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In the grand concept window and widget declarations need to occur after input handling and before drawing to screen. Not doing so can result in higher latency or at worst invalid behavior. Furthermore make sure that `nk_clear` is called at the end of the frame. While nuklear's default platform backends already call `nk_clear` for you if you write your own backend not calling `nk_clear` can cause asserts or even worse undefined behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { Event evt; nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { nk_input_xxx(...); } } nk_input_end(&ctx); if (nk_begin_xxx(...) { //[...] } nk_end(ctx); const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case //...: //[...] } nk_clear(&ctx); } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description ------------------------------------|---------------------------------------- nk_begin | Starts a new window; needs to be called every frame for every window (unless hidden) or otherwise the window gets removed nk_begin_titled | Extended window start with separated title and identifier to allow multiple windows with same name but not title nk_end | Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup nk_window_find | Finds and returns the window with give name nk_window_get_bounds | Returns a rectangle with screen position and size of the currently processed window. nk_window_get_position | Returns the position of the currently processed window nk_window_get_size | Returns the size with width and height of the currently processed window nk_window_get_width | Returns the width of the currently processed window nk_window_get_height | Returns the height of the currently processed window nk_window_get_panel | Returns the underlying panel which contains all processing state of the current window nk_window_get_content_region | Returns the position and size of the currently visible and non-clipped space inside the currently processed window nk_window_get_content_region_min | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window nk_window_get_content_region_max | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window nk_window_get_content_region_size | Returns the size of the currently visible and non-clipped space inside the currently processed window nk_window_get_canvas | Returns the draw command buffer. Can be used to draw custom widgets nk_window_get_scroll | Gets the scroll offset of the current window nk_window_has_focus | Returns if the currently processed window is currently active nk_window_is_collapsed | Returns if the window with given name is currently minimized/collapsed nk_window_is_closed | Returns if the currently processed window was closed nk_window_is_hidden | Returns if the currently processed window was hidden nk_window_is_active | Same as nk_window_has_focus for some reason nk_window_is_hovered | Returns if the currently processed window is currently being hovered by mouse nk_window_is_any_hovered | Return if any window currently hovered nk_item_is_any_active | Returns if any window or widgets is currently hovered or active nk_window_set_bounds | Updates position and size of the currently processed window nk_window_set_position | Updates position of the currently process window nk_window_set_size | Updates the size of the currently processed window nk_window_set_focus | Set the currently processed window as active window nk_window_set_scroll | Sets the scroll offset of the current window nk_window_close | Closes the window with given window name which deletes the window at the end of the frame nk_window_collapse | Collapses the window with given window name nk_window_collapse_if | Collapses the window with given window name if the given condition was met nk_window_show | Hides a visible or reshows a hidden window nk_window_show_if | Hides/shows a window depending on condition #### nk_panel_flags Flag | Description ----------------------------|---------------------------------------- NK_WINDOW_BORDER | Draws a border around the window to visually separate window from the background NK_WINDOW_MOVABLE | The movable flag indicates that a window can be moved by user input or by dragging the window header NK_WINDOW_SCALABLE | The scalable flag indicates that a window can be scaled by user input by dragging a scaler icon at the button of the window NK_WINDOW_CLOSABLE | Adds a closable icon into the header NK_WINDOW_MINIMIZABLE | Adds a minimize icon into the header NK_WINDOW_NO_SCROLLBAR | Removes the scrollbar from the window NK_WINDOW_TITLE | Forces a header at the top at the window showing the title NK_WINDOW_SCROLL_AUTO_HIDE | Automatically hides the window scrollbar if no user interaction: also requires delta time in `nk_context` to be set each frame NK_WINDOW_BACKGROUND | Always keep window in the background NK_WINDOW_SCALE_LEFT | Puts window scaler in the left-bottom corner instead right-bottom NK_WINDOW_NO_INPUT | Prevents window of scaling, moving or getting focus #### nk_collapse_states State | Description ----------------|----------------------------------------------------------- __NK_MINIMIZED__| UI section is collased and not visibile until maximized __NK_MAXIMIZED__| UI section is extended and visibile until minimized

#### nk_begin Starts a new window; needs to be called every frame for every window (unless hidden) or otherwise the window gets removed ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __title__ | Window title and identifier. Needs to be persistent over frames to identify the window __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors Returns `true(1)` if the window can be filled up with widgets from this point until `nk_end` or `false(0)` otherwise for example if minimized #### nk_begin_titled Extended window start with separated title and identifier to allow multiple windows with same title but not name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Window identifier. Needs to be persistent over frames to identify the window __title__ | Window title displayed inside header if flag `NK_WINDOW_TITLE` or either `NK_WINDOW_CLOSABLE` or `NK_WINDOW_MINIMIZED` was set __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors Returns `true(1)` if the window can be filled up with widgets from this point until `nk_end` or `false(0)` otherwise for example if minimized #### nk_end Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup. All widget calls after this functions will result in asserts or no state changes ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_end(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct #### nk_window_find Finds and returns a window from passed name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_window *nk_window_find(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Window identifier Returns a `nk_window` struct pointing to the identified window or NULL if no window with the given name was found #### nk_window_get_bounds Returns a rectangle with screen position and size of the currently processed window !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_window_get_bounds(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns a `nk_rect` struct with window upper left window position and size #### nk_window_get_position Returns the position of the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_window_get_position(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns a `nk_vec2` struct with window upper left position #### nk_window_get_size Returns the size with width and height of the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_window_get_size(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns a `nk_vec2` struct with window width and height #### nk_window_get_width Returns the width of the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c float nk_window_get_width(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns the current window width #### nk_window_get_height Returns the height of the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c float nk_window_get_height(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns the current window height #### nk_window_get_panel Returns the underlying panel which contains all processing state of the current window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` !!! WARNING Do not keep the returned panel pointer around, it is only valid until `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_panel* nk_window_get_panel(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns a pointer to window internal `nk_panel` state. #### nk_window_get_content_region Returns the position and size of the currently visible and non-clipped space inside the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_window_get_content_region(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `nk_rect` struct with screen position and size (no scrollbar offset) of the visible space inside the current window #### nk_window_get_content_region_min Returns the upper left position of the currently visible and non-clipped space inside the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_window_get_content_region_min(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct returns `nk_vec2` struct with upper left screen position (no scrollbar offset) of the visible space inside the current window #### nk_window_get_content_region_max Returns the lower right screen position of the currently visible and non-clipped space inside the currently processed window. !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_window_get_content_region_max(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `nk_vec2` struct with lower right screen position (no scrollbar offset) of the visible space inside the current window #### nk_window_get_content_region_size Returns the size of the currently visible and non-clipped space inside the currently processed window !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_window_get_content_region_size(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `nk_vec2` struct with size the visible space inside the current window #### nk_window_get_canvas Returns the draw command buffer. Can be used to draw custom widgets !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` !!! WARNING Do not keep the returned command buffer pointer around it is only valid until `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_command_buffer* nk_window_get_canvas(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns a pointer to window internal `nk_command_buffer` struct used as drawing canvas. Can be used to do custom drawing. #### nk_window_get_scroll Gets the scroll offset for the current window !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description -------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __offset_x__ | A pointer to the x offset output __offset_y__ | A pointer to the y offset output #### nk_window_has_focus Returns if the currently processed window is currently active !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_has_focus(const struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `false(0)` if current window is not active or `true(1)` if it is #### nk_window_is_hovered Return if the current window is being hovered !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_hovered(struct nk_context *ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `true(1)` if current window is hovered or `false(0)` otherwise #### nk_window_is_collapsed Returns if the window with given name is currently minimized/collapsed ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_collapsed(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of window you want to check if it is collapsed Returns `true(1)` if current window is minimized and `false(0)` if window not found or is not minimized #### nk_window_is_closed Returns if the window with given name was closed by calling `nk_close` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_closed(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of window you want to check if it is closed Returns `true(1)` if current window was closed or `false(0)` window not found or not closed #### nk_window_is_hidden Returns if the window with given name is hidden ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_hidden(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of window you want to check if it is hidden Returns `true(1)` if current window is hidden or `false(0)` window not found or visible #### nk_window_is_active Same as nk_window_has_focus for some reason ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_active(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of window you want to check if it is active Returns `true(1)` if current window is active or `false(0)` window not found or not active #### nk_window_is_any_hovered Returns if the any window is being hovered ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_window_is_any_hovered(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `true(1)` if any window is hovered or `false(0)` otherwise #### nk_item_is_any_active Returns if the any window is being hovered or any widget is currently active. Can be used to decide if input should be processed by UI or your specific input handling. Example could be UI and 3D camera to move inside a 3D space. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_item_is_any_active(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct Returns `true(1)` if any window is hovered or any item is active or `false(0)` otherwise #### nk_window_set_bounds Updates position and size of window with passed in name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_set_bounds(struct nk_context*, const char *name, struct nk_rect bounds); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to modify both position and size __bounds__ | Must point to a `nk_rect` struct with the new position and size #### nk_window_set_position Updates position of window with passed name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_set_position(struct nk_context*, const char *name, struct nk_vec2 pos); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to modify both position __pos__ | Must point to a `nk_vec2` struct with the new position #### nk_window_set_size Updates size of window with passed in name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_set_size(struct nk_context*, const char *name, struct nk_vec2); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to modify both window size __size__ | Must point to a `nk_vec2` struct with new window size #### nk_window_set_focus Sets the window with given name as active ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_set_focus(struct nk_context*, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to set focus on #### nk_window_set_scroll Sets the scroll offset for the current window !!! WARNING Only call this function between calls `nk_begin_xxx` and `nk_end` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description -------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __offset_x__ | The x offset to scroll to __offset_y__ | The y offset to scroll to #### nk_window_close Closes a window and marks it for being freed at the end of the frame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_close(struct nk_context *ctx, const char *name); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to close #### nk_window_collapse Updates collapse state of a window with given name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_collapse(struct nk_context*, const char *name, enum nk_collapse_states state); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to close __state__ | value out of nk_collapse_states section #### nk_window_collapse_if Updates collapse state of a window with given name if given condition is met ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_collapse_if(struct nk_context*, const char *name, enum nk_collapse_states, int cond); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to either collapse or maximize __state__ | value out of nk_collapse_states section the window should be put into __cond__ | condition that has to be met to actually commit the collapse state change #### nk_window_show updates visibility state of a window with given name ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_show(struct nk_context*, const char *name, enum nk_show_states); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to either collapse or maximize __state__ | state with either visible or hidden to modify the window with #### nk_window_show_if Updates visibility state of a window with given name if a given condition is met ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_window_show_if(struct nk_context*, const char *name, enum nk_show_states, int cond); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __name__ | Identifier of the window to either hide or show __state__ | state with either visible or hidden to modify the window with __cond__ | condition that has to be met to actually commit the visbility state change ### Layouting Layouting in general describes placing widget inside a window with position and size. While in this particular implementation there are five different APIs for layouting each with different trade offs between control and ease of use.

All layouting methods in this library are based around the concept of a row. A row has a height the window content grows by and a number of columns and each layouting method specifies how each widget is placed inside the row. After a row has been allocated by calling a layouting functions and then filled with widgets will advance an internal pointer over the allocated row.

To actually define a layout you just call the appropriate layouting function and each subsequent widget call will place the widget as specified. Important here is that if you define more widgets then columns defined inside the layout functions it will allocate the next row without you having to make another layouting

call. Biggest limitation with using all these APIs outside the `nk_layout_space_xxx` API is that you have to define the row height for each. However the row height often depends on the height of the font.

To fix that internally nuklear uses a minimum row height that is set to the height plus padding of currently active font and overwrites the row height value if zero.

If you manually want to change the minimum row height then use nk_layout_set_min_row_height, and use nk_layout_reset_min_row_height to reset it back to be derived from font height.

Also if you change the font in nuklear it will automatically change the minimum row height for you and. This means if you change the font but still want a minimum row height smaller than the font you have to repush your value.

For actually more advanced UI I would even recommend using the `nk_layout_space_xxx` layouting method in combination with a cassowary constraint solver (there are some versions on github with permissive license model) to take over all control over widget layouting yourself. However for quick and dirty layouting using all the other layouting functions should be fine. #### Usage 1. __nk_layout_row_dynamic__

The easiest layouting function is `nk_layout_row_dynamic`. It provides each widgets with same horizontal space inside the row and dynamically grows if the owning window grows in width. So the number of columns dictates the size of each widget dynamically by formula: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c widget_width = (window_width - padding - spacing) * (1/colum_count) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Just like all other layouting APIs if you define more widget than columns this library will allocate a new row and keep all layouting parameters previously defined. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // first row with height: 30 composed of two widgets nk_layout_row_dynamic(&ctx, 30, 2); nk_widget(...); nk_widget(...); // // second row with same parameter as defined above nk_widget(...); nk_widget(...); // // third row uses 0 for height which will use auto layouting nk_layout_row_dynamic(&ctx, 0, 2); nk_widget(...); nk_widget(...); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2. __nk_layout_row_static__

Another easy layouting function is `nk_layout_row_static`. It provides each widget with same horizontal pixel width inside the row and does not grow if the owning window scales smaller or bigger. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // first row with height: 30 composed of two widgets with width: 80 nk_layout_row_static(&ctx, 30, 80, 2); nk_widget(...); nk_widget(...); // // second row with same parameter as defined above nk_widget(...); nk_widget(...); // // third row uses 0 for height which will use auto layouting nk_layout_row_static(&ctx, 0, 80, 2); nk_widget(...); nk_widget(...); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3. __nk_layout_row_xxx__

A little bit more advanced layouting API are functions `nk_layout_row_begin`, `nk_layout_row_push` and `nk_layout_row_end`. They allow to directly specify each column pixel or window ratio in a row. It supports either directly setting per column pixel width or widget window ratio but not both. Furthermore it is a immediate mode API so each value is directly pushed before calling a widget. Therefore the layout is not automatically repeating like the last two layouting functions. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // first row with height: 25 composed of two widgets with width 60 and 40 nk_layout_row_begin(ctx, NK_STATIC, 25, 2); nk_layout_row_push(ctx, 60); nk_widget(...); nk_layout_row_push(ctx, 40); nk_widget(...); nk_layout_row_end(ctx); // // second row with height: 25 composed of two widgets with window ratio 0.25 and 0.75 nk_layout_row_begin(ctx, NK_DYNAMIC, 25, 2); nk_layout_row_push(ctx, 0.25f); nk_widget(...); nk_layout_row_push(ctx, 0.75f); nk_widget(...); nk_layout_row_end(ctx); // // third row with auto generated height: composed of two widgets with window ratio 0.25 and 0.75 nk_layout_row_begin(ctx, NK_DYNAMIC, 0, 2); nk_layout_row_push(ctx, 0.25f); nk_widget(...); nk_layout_row_push(ctx, 0.75f); nk_widget(...); nk_layout_row_end(ctx); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4. __nk_layout_row__

The array counterpart to API nk_layout_row_xxx is the single nk_layout_row functions. Instead of pushing either pixel or window ratio for every widget it allows to define it by array. The trade of for less control is that `nk_layout_row` is automatically repeating. Otherwise the behavior is the same. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // two rows with height: 30 composed of two widgets with width 60 and 40 const float size[] = {60,40}; nk_layout_row(ctx, NK_STATIC, 30, 2, ratio); nk_widget(...); nk_widget(...); nk_widget(...); nk_widget(...); // // two rows with height: 30 composed of two widgets with window ratio 0.25 and 0.75 const float ratio[] = {0.25, 0.75}; nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); nk_widget(...); nk_widget(...); nk_widget(...); nk_widget(...); // // two rows with auto generated height composed of two widgets with window ratio 0.25 and 0.75 const float ratio[] = {0.25, 0.75}; nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); nk_widget(...); nk_widget(...); nk_widget(...); nk_widget(...); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5. __nk_layout_row_template_xxx__

The most complex and second most flexible API is a simplified flexbox version without line wrapping and weights for dynamic widgets. It is an immediate mode API but unlike `nk_layout_row_xxx` it has auto repeat behavior and needs to be called before calling the templated widgets. The row template layout has three different per widget size specifier. The first one is the `nk_layout_row_template_push_static` with fixed widget pixel width. They do not grow if the row grows and will always stay the same. The second size specifier is `nk_layout_row_template_push_variable` which defines a minimum widget size but it also can grow if more space is available not taken by other widgets. Finally there are dynamic widgets with `nk_layout_row_template_push_dynamic` which are completely flexible and unlike variable widgets can even shrink to zero if not enough space is provided. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // two rows with height: 30 composed of three widgets nk_layout_row_template_begin(ctx, 30); nk_layout_row_template_push_dynamic(ctx); nk_layout_row_template_push_variable(ctx, 80); nk_layout_row_template_push_static(ctx, 80); nk_layout_row_template_end(ctx); // // first row nk_widget(...); // dynamic widget can go to zero if not enough space nk_widget(...); // variable widget with min 80 pixel but can grow bigger if enough space nk_widget(...); // static widget with fixed 80 pixel width // // second row same layout nk_widget(...); nk_widget(...); nk_widget(...); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 6. __nk_layout_space_xxx__

Finally the most flexible API directly allows you to place widgets inside the window. The space layout API is an immediate mode API which does not support row auto repeat and directly sets position and size of a widget. Position and size hereby can be either specified as ratio of allocated space or allocated space local position and pixel size. Since this API is quite powerful there are a number of utility functions to get the available space and convert between local allocated space and screen space. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_begin_xxx(...) { // static row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) nk_layout_space_begin(ctx, NK_STATIC, 500, INT_MAX); nk_layout_space_push(ctx, nk_rect(0,0,150,200)); nk_widget(...); nk_layout_space_push(ctx, nk_rect(200,200,100,200)); nk_widget(...); nk_layout_space_end(ctx); // // dynamic row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) nk_layout_space_begin(ctx, NK_DYNAMIC, 500, INT_MAX); nk_layout_space_push(ctx, nk_rect(0.5,0.5,0.1,0.1)); nk_widget(...); nk_layout_space_push(ctx, nk_rect(0.7,0.6,0.1,0.1)); nk_widget(...); } nk_end(...); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description ----------------------------------------|------------------------------------ nk_layout_set_min_row_height | Set the currently used minimum row height to a specified value nk_layout_reset_min_row_height | Resets the currently used minimum row height to font height nk_layout_widget_bounds | Calculates current width a static layout row can fit inside a window nk_layout_ratio_from_pixel | Utility functions to calculate window ratio from pixel size nk_layout_row_dynamic | Current layout is divided into n same sized growing columns nk_layout_row_static | Current layout is divided into n same fixed sized columns nk_layout_row_begin | Starts a new row with given height and number of columns nk_layout_row_push | Pushes another column with given size or window ratio nk_layout_row_end | Finished previously started row nk_layout_row | Specifies row columns in array as either window ratio or size nk_layout_row_template_begin | Begins the row template declaration nk_layout_row_template_push_dynamic | Adds a dynamic column that dynamically grows and can go to zero if not enough space nk_layout_row_template_push_variable | Adds a variable column that dynamically grows but does not shrink below specified pixel width nk_layout_row_template_push_static | Adds a static column that does not grow and will always have the same size nk_layout_row_template_end | Marks the end of the row template nk_layout_space_begin | Begins a new layouting space that allows to specify each widgets position and size nk_layout_space_push | Pushes position and size of the next widget in own coordinate space either as pixel or ratio nk_layout_space_end | Marks the end of the layouting space nk_layout_space_bounds | Callable after nk_layout_space_begin and returns total space allocated nk_layout_space_to_screen | Converts vector from nk_layout_space coordinate space into screen space nk_layout_space_to_local | Converts vector from screen space into nk_layout_space coordinates nk_layout_space_rect_to_screen | Converts rectangle from nk_layout_space coordinate space into screen space nk_layout_space_rect_to_local | Converts rectangle from screen space into nk_layout_space coordinates #### nk_layout_set_min_row_height Sets the currently used minimum row height. !!! WARNING The passed height needs to include both your preferred row height as well as padding. No internal padding is added. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_set_min_row_height(struct nk_context*, float height); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __height__ | New minimum row height to be used for auto generating the row height #### nk_layout_reset_min_row_height Reset the currently used minimum row height back to `font_height + text_padding + padding` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_reset_min_row_height(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` #### nk_layout_widget_bounds Returns the width of the next row allocate by one of the layouting functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_layout_widget_bounds(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` Return `nk_rect` with both position and size of the next row #### nk_layout_ratio_from_pixel Utility functions to calculate window ratio from pixel size ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c float nk_layout_ratio_from_pixel(struct nk_context*, float pixel_width); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __pixel__ | Pixel_width to convert to window ratio Returns `nk_rect` with both position and size of the next row #### nk_layout_row_dynamic Sets current row layout to share horizontal space between @cols number of widgets evenly. Once called all subsequent widget calls greater than @cols will allocate a new row with same layout. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __height__ | Holds height of each widget in row or zero for auto layouting __columns__ | Number of widget inside row #### nk_layout_row_static Sets current row layout to fill @cols number of widgets in row with same @item_width horizontal size. Once called all subsequent widget calls greater than @cols will allocate a new row with same layout. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __height__ | Holds height of each widget in row or zero for auto layouting __width__ | Holds pixel width of each widget in the row __columns__ | Number of widget inside row #### nk_layout_row_begin Starts a new dynamic or fixed row with given height and columns. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __fmt__ | either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns __height__ | holds height of each widget in row or zero for auto layouting __columns__ | Number of widget inside row #### nk_layout_row_push Specifies either window ratio or width of a single column ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_push(struct nk_context*, float value); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __value__ | either a window ratio or fixed width depending on @fmt in previous `nk_layout_row_begin` call #### nk_layout_row_end Finished previously started row ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_end(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` #### nk_layout_row Specifies row columns in array as either window ratio or size ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row(struct nk_context*, enum nk_layout_format, float height, int cols, const float *ratio); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns __height__ | Holds height of each widget in row or zero for auto layouting __columns__ | Number of widget inside row #### nk_layout_row_template_begin Begins the row template declaration ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_template_begin(struct nk_context*, float row_height); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __height__ | Holds height of each widget in row or zero for auto layouting #### nk_layout_row_template_push_dynamic Adds a dynamic column that dynamically grows and can go to zero if not enough space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_template_push_dynamic(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __height__ | Holds height of each widget in row or zero for auto layouting #### nk_layout_row_template_push_variable Adds a variable column that dynamically grows but does not shrink below specified pixel width ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_template_push_variable(struct nk_context*, float min_width); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __width__ | Holds the minimum pixel width the next column must always be #### nk_layout_row_template_push_static Adds a static column that does not grow and will always have the same size ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_template_push_static(struct nk_context*, float width); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __width__ | Holds the absolute pixel width value the next column must be #### nk_layout_row_template_end Marks the end of the row template ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_row_template_end(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` #### nk_layout_space_begin Begins a new layouting space that allows to specify each widgets position and size. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_space_begin(struct nk_context*, enum nk_layout_format, float height, int widget_count); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns __height__ | Holds height of each widget in row or zero for auto layouting __columns__ | Number of widgets inside row #### nk_layout_space_push Pushes position and size of the next widget in own coordinate space either as pixel or ratio ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_space_push(struct nk_context *ctx, struct nk_rect bounds); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` __bounds__ | Position and size in laoyut space local coordinates #### nk_layout_space_end Marks the end of the layout space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_layout_space_end(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` #### nk_layout_space_bounds Utility function to calculate total space allocated for `nk_layout_space` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_layout_space_bounds(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` Returns `nk_rect` holding the total space allocated #### nk_layout_space_to_screen Converts vector from nk_layout_space coordinate space into screen space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_layout_space_to_screen(struct nk_context*, struct nk_vec2); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` __vec__ | Position to convert from layout space into screen coordinate space Returns transformed `nk_vec2` in screen space coordinates #### nk_layout_space_to_local Converts vector from layout space into screen space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_vec2 nk_layout_space_to_local(struct nk_context*, struct nk_vec2); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` __vec__ | Position to convert from screen space into layout coordinate space Returns transformed `nk_vec2` in layout space coordinates #### nk_layout_space_rect_to_screen Converts rectangle from screen space into layout space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_layout_space_rect_to_screen(struct nk_context*, struct nk_rect); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` __bounds__ | Rectangle to convert from layout space into screen space Returns transformed `nk_rect` in screen space coordinates #### nk_layout_space_rect_to_local Converts rectangle from layout space into screen space ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_rect nk_layout_space_rect_to_local(struct nk_context*, struct nk_rect); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` __bounds__ | Rectangle to convert from layout space into screen space Returns transformed `nk_rect` in layout space coordinates ### Groups Groups are basically windows inside windows. They allow to subdivide space in a window to layout widgets as a group. Almost all more complex widget layouting requirements can be solved using groups and basic layouting fuctionality. Groups just like windows are identified by an unique name and internally keep track of scrollbar offsets by default. However additional versions are provided to directly manage the scrollbar. #### Usage To create a group you have to call one of the three `nk_group_begin_xxx` functions to start group declarations and `nk_group_end` at the end. Furthermore it is required to check the return value of `nk_group_begin_xxx` and only process widgets inside the window if the value is not 0. Nesting groups is possible and even encouraged since many layouting schemes can only be achieved by nesting. Groups, unlike windows, need `nk_group_end` to be only called if the corosponding `nk_group_begin_xxx` call does not return 0: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_group_begin_xxx(ctx, ...) { // [... widgets ...] nk_group_end(ctx); } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In the grand concept groups can be called after starting a window with `nk_begin_xxx` and before calling `nk_end`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { // Input Event evt; nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { nk_input_xxx(...); } } nk_input_end(&ctx); // // Window if (nk_begin_xxx(...) { // [...widgets...] nk_layout_row_dynamic(...); if (nk_group_begin_xxx(ctx, ...) { //[... widgets ...] nk_group_end(ctx); } } nk_end(ctx); // // Draw const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case ...: // [...] } } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description --------------------------------|------------------------------------------- nk_group_begin | Start a new group with internal scrollbar handling nk_group_begin_titled | Start a new group with separeted name and title and internal scrollbar handling nk_group_end | Ends a group. Should only be called if nk_group_begin returned non-zero nk_group_scrolled_offset_begin | Start a new group with manual separated handling of scrollbar x- and y-offset nk_group_scrolled_begin | Start a new group with manual scrollbar handling nk_group_scrolled_end | Ends a group with manual scrollbar handling. Should only be called if nk_group_begin returned non-zero #### nk_group_begin Starts a new widget group. Requires a previous layouting function to specify a pos/size. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_group_begin(struct nk_context*, const char *title, nk_flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __title__ | Must be an unique identifier for this group that is also used for the group header __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_group_begin_titled Starts a new widget group. Requires a previous layouting function to specify a pos/size. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_group_begin_titled(struct nk_context*, const char *name, const char *title, nk_flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __id__ | Must be an unique identifier for this group __title__ | Group header title __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_group_end Ends a widget group ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_group_end(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct #### nk_group_scrolled_offset_begin starts a new widget group. requires a previous layouting function to specify a size. Does not keep track of scrollbar. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_group_scrolled_offset_begin(struct nk_context*, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __x_offset__| Scrollbar x-offset to offset all widgets inside the group horizontally. __y_offset__| Scrollbar y-offset to offset all widgets inside the group vertically __title__ | Window unique group title used to both identify and display in the group header __flags__ | Window flags from the nk_panel_flags section Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_group_scrolled_begin Starts a new widget group. requires a previous layouting function to specify a size. Does not keep track of scrollbar. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_group_scrolled_begin(struct nk_context*, struct nk_scroll *off, const char *title, nk_flags); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __off__ | Both x- and y- scroll offset. Allows for manual scrollbar control __title__ | Window unique group title used to both identify and display in the group header __flags__ | Window flags from nk_panel_flags section Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_group_scrolled_end Ends a widget group after calling nk_group_scrolled_offset_begin or nk_group_scrolled_begin. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_group_scrolled_end(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct #### nk_group_get_scroll Gets the scroll position of the given group. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_group_get_scroll(struct nk_context*, const char *id, nk_uint *x_offset, nk_uint *y_offset); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description -------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __id__ | The id of the group to get the scroll position of __x_offset__ | A pointer to the x offset output __y_offset__ | A pointer to the y offset output #### nk_group_set_scroll Sets the scroll position of the given group. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_group_set_scroll(struct nk_context*, const char *id, nk_uint x_offset, nk_uint y_offset); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description -------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __id__ | The id of the group to scroll __x_offset__ | The x offset to scroll to __y_offset__ | The y offset to scroll to ### Tree Trees represent two different concept. First the concept of a collapsable UI section that can be either in a hidden or visibile state. They allow the UI user to selectively minimize the current set of visible UI to comprehend. The second concept are tree widgets for visual UI representation of trees.

Trees thereby can be nested for tree representations and multiple nested collapsable UI sections. All trees are started by calling of the `nk_tree_xxx_push_tree` functions and ended by calling one of the `nk_tree_xxx_pop_xxx()` functions. Each starting functions takes a title label and optionally an image to be displayed and the initial collapse state from the nk_collapse_states section.

The runtime state of the tree is either stored outside the library by the caller or inside which requires a unique ID. The unique ID can either be generated automatically from `__FILE__` and `__LINE__` with function `nk_tree_push`, by `__FILE__` and a user provided ID generated for example by loop index with function `nk_tree_push_id` or completely provided from outside by user with function `nk_tree_push_hashed`. #### Usage To create a tree you have to call one of the seven `nk_tree_xxx_push_xxx` functions to start a collapsable UI section and `nk_tree_xxx_pop` to mark the end. Each starting function will either return `false(0)` if the tree is collapsed or hidden and therefore does not need to be filled with content or `true(1)` if visible and required to be filled. !!! Note The tree header does not require and layouting function and instead calculates a auto height based on the currently used font size The tree ending functions only need to be called if the tree content is actually visible. So make sure the tree push function is guarded by `if` and the pop call is only taken if the tree is visible. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c if (nk_tree_push(ctx, NK_TREE_TAB, "Tree", NK_MINIMIZED)) { nk_layout_row_dynamic(...); nk_widget(...); nk_tree_pop(ctx); } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description ----------------------------|------------------------------------------- nk_tree_push | Start a collapsable UI section with internal state management nk_tree_push_id | Start a collapsable UI section with internal state management callable in a look nk_tree_push_hashed | Start a collapsable UI section with internal state management with full control over internal unique ID use to store state nk_tree_image_push | Start a collapsable UI section with image and label header nk_tree_image_push_id | Start a collapsable UI section with image and label header and internal state management callable in a look nk_tree_image_push_hashed | Start a collapsable UI section with image and label header and internal state management with full control over internal unique ID use to store state nk_tree_pop | Ends a collapsable UI section nk_tree_state_push | Start a collapsable UI section with external state management nk_tree_state_image_push | Start a collapsable UI section with image and label header and external state management nk_tree_state_pop | Ends a collapsabale UI section #### nk_tree_type Flag | Description ----------------|---------------------------------------- NK_TREE_NODE | Highlighted tree header to mark a collapsable UI section NK_TREE_TAB | Non-highighted tree header closer to tree representations #### nk_tree_push Starts a collapsable UI section with internal state management !!! WARNING To keep track of the runtime tree collapsable state this function uses defines `__FILE__` and `__LINE__` to generate a unique ID. If you want to call this function in a loop please use `nk_tree_push_id` or `nk_tree_push_hashed` instead. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_tree_push(ctx, type, title, state) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_push_id Starts a collapsable UI section with internal state management callable in a look ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_tree_push_id(ctx, type, title, state, id) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states __id__ | Loop counter index if this function is called in a loop Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_push_hashed Start a collapsable UI section with internal state management with full control over internal unique ID used to store state ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_tree_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states __hash__ | Memory block or string to generate the ID from __len__ | Size of passed memory block or string in __hash__ __seed__ | Seeding value if this function is called in a loop or default to `0` Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_image_push Start a collapsable UI section with image and label header !!! WARNING To keep track of the runtime tree collapsable state this function uses defines `__FILE__` and `__LINE__` to generate a unique ID. If you want to call this function in a loop please use `nk_tree_image_push_id` or `nk_tree_image_push_hashed` instead. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_tree_image_push(ctx, type, img, title, state) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __img__ | Image to display inside the header on the left of the label __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_image_push_id Start a collapsable UI section with image and label header and internal state management callable in a look ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c #define nk_tree_image_push_id(ctx, type, img, title, state, id) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __img__ | Image to display inside the header on the left of the label __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states __id__ | Loop counter index if this function is called in a loop Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_image_push_hashed Start a collapsable UI section with internal state management with full control over internal unique ID used to store state ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_tree_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __img__ | Image to display inside the header on the left of the label __title__ | Label printed in the tree header __state__ | Initial tree state value out of nk_collapse_states __hash__ | Memory block or string to generate the ID from __len__ | Size of passed memory block or string in __hash__ __seed__ | Seeding value if this function is called in a loop or default to `0` Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_pop Ends a collapsabale UI section ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_tree_pop(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` #### nk_tree_state_push Start a collapsable UI section with external state management ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_tree_state_push(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states *state); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __title__ | Label printed in the tree header __state__ | Persistent state to update Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_state_image_push Start a collapsable UI section with image and label header and external state management ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_tree_state_image_push(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states *state); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` __img__ | Image to display inside the header on the left of the label __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node __title__ | Label printed in the tree header __state__ | Persistent state to update Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise #### nk_tree_state_pop Ends a collapsabale UI section ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_tree_state_pop(struct nk_context*); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description ------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` ### Properties Properties are the main value modification widgets in Nuklear. Changing a value can be achieved by dragging, adding/removing incremental steps on button click or by directly typing a number. #### Usage Each property requires a unique name for identifaction that is also used for displaying a label. If you want to use the same name multiple times make sure add a '#' before your name. The '#' will not be shown but will generate a unique ID. Each propery also takes in a minimum and maximum value. If you want to make use of the complete number range of a type just use the provided type limits from `limits.h`. For example `INT_MIN` and `INT_MAX` for `nk_property_int` and `nk_propertyi`. In additional each property takes in a increment value that will be added or subtracted if either the increment decrement button is clicked. Finally there is a value for increment per pixel dragged that is added or subtracted from the value. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int value = 0; struct nk_context ctx; nk_init_xxx(&ctx, ...); while (1) { // Input Event evt; nk_input_begin(&ctx); while (GetEvent(&evt)) { if (evt.type == MOUSE_MOVE) nk_input_motion(&ctx, evt.motion.x, evt.motion.y); else if (evt.type == [...]) { nk_input_xxx(...); } } nk_input_end(&ctx); // // Window if (nk_begin_xxx(...) { // Property nk_layout_row_dynamic(...); nk_property_int(ctx, "ID", INT_MIN, &value, INT_MAX, 1, 1); } nk_end(ctx); // // Draw const struct nk_command *cmd = 0; nk_foreach(cmd, &ctx) { switch (cmd->type) { case NK_COMMAND_LINE: your_draw_line_function(...) break; case NK_COMMAND_RECT your_draw_rect_function(...) break; case ...: // [...] } } nk_free(&ctx); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #### Reference Function | Description --------------------|------------------------------------------- nk_property_int | Integer property directly modifing a passed in value nk_property_float | Float property directly modifing a passed in value nk_property_double | Double property directly modifing a passed in value nk_propertyi | Integer property returning the modified int value nk_propertyf | Float property returning the modified float value nk_propertyd | Double property returning the modified double value #### nk_property_int Integer property directly modifing a passed in value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_property_int(struct nk_context *ctx, const char *name, int min, int *val, int max, int step, float inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Integer pointer to be modified __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging #### nk_property_float Float property directly modifing a passed in value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_property_float(struct nk_context *ctx, const char *name, float min, float *val, float max, float step, float inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Float pointer to be modified __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging #### nk_property_double Double property directly modifing a passed in value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c void nk_property_double(struct nk_context *ctx, const char *name, double min, double *val, double max, double step, double inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Double pointer to be modified __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging #### nk_propertyi Integer property modifing a passed in value and returning the new value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c int nk_propertyi(struct nk_context *ctx, const char *name, int min, int val, int max, int step, float inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Current integer value to be modified and returned __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging Returns the new modified integer value #### nk_propertyf Float property modifing a passed in value and returning the new value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c float nk_propertyf(struct nk_context *ctx, const char *name, float min, float val, float max, float step, float inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Current float value to be modified and returned __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging Returns the new modified float value #### nk_propertyd Float property modifing a passed in value and returning the new value !!! WARNING To generate a unique property ID using the same label make sure to insert a `#` at the beginning. It will not be shown but guarantees correct behavior. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c float nk_propertyd(struct nk_context *ctx, const char *name, double min, double val, double max, double step, double inc_per_pixel); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Parameter | Description --------------------|----------------------------------------------------------- __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function __name__ | String used both as a label as well as a unique identifier __min__ | Minimum value not allowed to be underflown __val__ | Current double value to be modified and returned __max__ | Maximum value not allowed to be overflown __step__ | Increment added and subtracted on increment and decrement button __inc_per_pixel__ | Value per pixel added or subtracted on dragging Returns the new modified double value -XXX.XXX- X...X - X...X -X....X - X....X" X...XXXXXXXXXXXXX...X - " ## License ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none ------------------------------------------------------------------------------ This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------ ALTERNATIVE A - MIT License Copyright (c) 2016-2018 Micha Mettke Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------ ALTERNATIVE B - Public Domain (www.unlicense.org) This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ## Changelog ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none [date][x.yy.zz]-[description] -[date]: date on which the change has been pushed -[x.yy.zz]: Numerical version string representation. Each version number on the right resets back to zero if version on the left is incremented. - [x]: Major version with API and library breaking changes - [yy]: Minor version with non-breaking API and library changes - [zz]: Bug fix version with no direct changes to API - 2019/09/20 (4.01.3) - Fixed a bug wherein combobox cannot be closed by clicking the header when NK_BUTTON_TRIGGER_ON_RELEASE is defined. - 2019/09/10 (4.01.2) - Fixed the nk_cos function, which deviated significantly. - 2019/09/08 (4.01.1) - Fixed a bug wherein re-baking of fonts caused a segmentation fault due to dst_font->glyph_count not being zeroed on subsequent bakes of the same set of fonts. - 2019/06/23 (4.01.0) - Added nk_***_get_scroll and nk_***_set_scroll for groups, windows, and popups. - 2019/06/12 (4.00.3) - Fix panel background drawing bug. - 2018/10/31 (4.00.2) - Added NK_KEYSTATE_BASED_INPUT to "fix" state based backends like GLFW without breaking key repeat behavior on event based. - 2018/04/01 (4.00.1) - Fixed calling `nk_convert` multiple time per single frame. - 2018/04/01 (4.00.0) - BREAKING CHANGE: nk_draw_list_clear no longer tries to clear provided buffers. So make sure to either free or clear each passed buffer after calling nk_convert. - 2018/02/23 (3.00.6) - Fixed slider dragging behavior. - 2018/01/31 (3.00.5) - Fixed overcalculation of cursor data in font baking process. - 2018/01/31 (3.00.4) - Removed name collision with stb_truetype. - 2018/01/28 (3.00.3) - Fixed panel window border drawing bug. - 2018/01/12 (3.00.2) - Added `nk_group_begin_titled` for separed group identifier and title. - 2018/01/07 (3.00.1) - Started to change documentation style. - 2018/01/05 (3.00.0) - BREAKING CHANGE: The previous color picker API was broken because of conversions between float and byte color representation. Color pickers now use floating point values to represent HSV values. To get back the old behavior I added some additional color conversion functions to cast between nk_color and nk_colorf. - 2017/12/23 (2.00.7) - Fixed small warning. - 2017/12/23 (2.00.7) - Fixed `nk_edit_buffer` behavior if activated to allow input. - 2017/12/23 (2.00.7) - Fixed modifyable progressbar dragging visuals and input behavior. - 2017/12/04 (2.00.6) - Added formated string tooltip widget. - 2017/11/18 (2.00.5) - Fixed window becoming hidden with flag `NK_WINDOW_NO_INPUT`. - 2017/11/15 (2.00.4) - Fixed font merging. - 2017/11/07 (2.00.3) - Fixed window size and position modifier functions. - 2017/09/14 (2.00.2) - Fixed `nk_edit_buffer` and `nk_edit_focus` behavior. - 2017/09/14 (2.00.1) - Fixed window closing behavior. - 2017/09/14 (2.00.0) - BREAKING CHANGE: Modifing window position and size funtions now require the name of the window and must happen outside the window building process (between function call nk_begin and nk_end). - 2017/09/11 (1.40.9) - Fixed window background flag if background window is declared last. - 2017/08/27 (1.40.8) - Fixed `nk_item_is_any_active` for hidden windows. - 2017/08/27 (1.40.7) - Fixed window background flag. - 2017/07/07 (1.40.6) - Fixed missing clipping rect check for hovering/clicked query for widgets. - 2017/07/07 (1.40.5) - Fixed drawing bug for vertex output for lines and stroked and filled rectangles. - 2017/07/07 (1.40.4) - Fixed bug in nk_convert trying to add windows that are in process of being destroyed. - 2017/07/07 (1.40.3) - Fixed table internal bug caused by storing table size in window instead of directly in table. - 2017/06/30 (1.40.2) - Removed unneeded semicolon in C++ NK_ALIGNOF macro. - 2017/06/30 (1.40.1) - Fixed drawing lines smaller or equal zero. - 2017/06/08 (1.40.0) - Removed the breaking part of last commit. Auto layout now only comes in effect if you pass in zero was row height argument. - 2017/06/08 (1.40.0) - BREAKING CHANGE: while not directly API breaking it will change how layouting works. From now there will be an internal minimum row height derived from font height. If you need a row smaller than that you can directly set it by `nk_layout_set_min_row_height` and reset the value back by calling `nk_layout_reset_min_row_height. - 2017/06/08 (1.39.1) - Fixed property text edit handling bug caused by past `nk_widget` fix. - 2017/06/08 (1.39.0) - Added function to retrieve window space without calling a `nk_layout_xxx` function. - 2017/06/06 (1.38.5) - Fixed `nk_convert` return flag for command buffer. - 2017/05/23 (1.38.4) - Fixed activation behavior for widgets partially clipped. - 2017/05/10 (1.38.3) - Fixed wrong min window size mouse scaling over boundries. - 2017/05/09 (1.38.2) - Fixed vertical scrollbar drawing with not enough space. - 2017/05/09 (1.38.1) - Fixed scaler dragging behavior if window size hits minimum size. - 2017/05/06 (1.38.0) - Added platform double-click support. - 2017/04/20 (1.37.1) - Fixed key repeat found inside glfw demo backends. - 2017/04/20 (1.37.0) - Extended properties with selection and clipboard support. - 2017/04/20 (1.36.2) - Fixed #405 overlapping rows with zero padding and spacing. - 2017/04/09 (1.36.1) - Fixed #403 with another widget float error. - 2017/04/09 (1.36.0) - Added window `NK_WINDOW_NO_INPUT` and `NK_WINDOW_NOT_INTERACTIVE` flags. - 2017/04/09 (1.35.3) - Fixed buffer heap corruption. - 2017/03/25 (1.35.2) - Fixed popup overlapping for `NK_WINDOW_BACKGROUND` windows. - 2017/03/25 (1.35.1) - Fixed windows closing behavior. - 2017/03/18 (1.35.0) - Added horizontal scroll requested in #377. - 2017/03/18 (1.34.3) - Fixed long window header titles. - 2017/03/04 (1.34.2) - Fixed text edit filtering. - 2017/03/04 (1.34.1) - Fixed group closable flag. - 2017/02/25 (1.34.0) - Added custom draw command for better language binding support. - 2017/01/24 (1.33.0) - Added programatic way of remove edit focus. - 2017/01/24 (1.32.3) - Fixed wrong define for basic type definitions for windows. - 2017/01/21 (1.32.2) - Fixed input capture from hidden or closed windows. - 2017/01/21 (1.32.1) - Fixed slider behavior and drawing. - 2017/01/13 (1.32.0) - Added flag to put scaler into the bottom left corner. - 2017/01/13 (1.31.0) - Added additional row layouting method to combine both dynamic and static widgets. - 2016/12/31 (1.30.0) - Extended scrollbar offset from 16-bit to 32-bit. - 2016/12/31 (1.29.2) - Fixed closing window bug of minimized windows. - 2016/12/03 (1.29.1) - Fixed wrapped text with no seperator and C89 error. - 2016/12/03 (1.29.0) - Changed text wrapping to process words not characters. - 2016/11/22 (1.28.6) - Fixed window minimized closing bug. - 2016/11/19 (1.28.5) - Fixed abstract combo box closing behavior. - 2016/11/19 (1.28.4) - Fixed tooltip flickering. - 2016/11/19 (1.28.3) - Fixed memory leak caused by popup repeated closing. - 2016/11/18 (1.28.2) - Fixed memory leak caused by popup panel allocation. - 2016/11/10 (1.28.1) - Fixed some warnings and C++ error. - 2016/11/10 (1.28.0) - Added additional `nk_button` versions which allows to directly pass in a style struct to change buttons visual. - 2016/11/10 (1.27.0) - Added additional `nk_tree` versions to support external state storage. Just like last the `nk_group` commit the main advantage is that you optionally can minimize nuklears runtime memory consumption or handle hash collisions. - 2016/11/09 (1.26.0) - Added additional `nk_group` version to support external scrollbar offset storage. Main advantage is that you can externalize the memory management for the offset. It could also be helpful if you have a hash collision in `nk_group_begin` but really want the name. In addition I added `nk_list_view` which allows to draw big lists inside a group without actually having to commit the whole list to nuklear (issue #269). - 2016/10/30 (1.25.1) - Fixed clipping rectangle bug inside `nk_draw_list`. - 2016/10/29 (1.25.0) - Pulled `nk_panel` memory management into nuklear and out of the hands of the user. From now on users don't have to care about panels unless they care about some information. If you still need the panel just call `nk_window_get_panel`. - 2016/10/21 (1.24.0) - Changed widget border drawing to stroked rectangle from filled rectangle for less overdraw and widget background transparency. - 2016/10/18 (1.23.0) - Added `nk_edit_focus` for manually edit widget focus control. - 2016/09/29 (1.22.7) - Fixed deduction of basic type in non `` compilation. - 2016/09/29 (1.22.6) - Fixed edit widget UTF-8 text cursor drawing bug. - 2016/09/28 (1.22.5) - Fixed edit widget UTF-8 text appending/inserting/removing. - 2016/09/28 (1.22.4) - Fixed drawing bug inside edit widgets which offset all text text in every edit widget if one of them is scrolled. - 2016/09/28 (1.22.3) - Fixed small bug in edit widgets if not active. The wrong text length is passed. It should have been in bytes but was passed as glyphes. - 2016/09/20 (1.22.2) - Fixed color button size calculation. - 2016/09/20 (1.22.1) - Fixed some `nk_vsnprintf` behavior bugs and removed `` again from `NK_INCLUDE_STANDARD_VARARGS`. - 2016/09/18 (1.22.0) - C89 does not support vsnprintf only C99 and newer as well as C++11 and newer. In addition to use vsnprintf you have to include . So just defining `NK_INCLUDE_STD_VAR_ARGS` is not enough. That behavior is now fixed. By default if both varargs as well as stdio is selected I try to use vsnprintf if not possible I will revert to vsprintf. If varargs but not stdio was defined I will use my own function. - 2016/09/15 (1.21.2) - Fixed panel `close` behavior for deeper panel levels. - 2016/09/15 (1.21.1) - Fixed C++ errors and wrong argument to `nk_panel_get_xxxx`. - 2016/09/13 (1.21.0) - !BREAKING! Fixed nonblocking popup behavior in menu, combo, and contextual which prevented closing in y-direction if popup did not reach max height. In addition the height parameter was changed into vec2 for width and height to have more control over the popup size. - 2016/09/13 (1.20.3) - Cleaned up and extended type selection. - 2016/09/13 (1.20.2) - Fixed slider behavior hopefully for the last time. This time all calculation are correct so no more hackery. - 2016/09/13 (1.20.1) - Internal change to divide window/panel flags into panel flags and types. Suprisinly spend years in C and still happened to confuse types with flags. Probably something to take note. - 2016/09/08 (1.20.0) - Added additional helper function to make it easier to just take the produced buffers from `nk_convert` and unplug the iteration process from `nk_context`. So now you can just use the vertex,element and command buffer + two pointer inside the command buffer retrieved by calls `nk__draw_begin` and `nk__draw_end` and macro `nk_draw_foreach_bounded`. - 2016/09/08 (1.19.0) - Added additional asserts to make sure every `nk_xxx_begin` call for windows, popups, combobox, menu and contextual is guarded by `if` condition and does not produce false drawing output. - 2016/09/08 (1.18.0) - Changed confusing name for `NK_SYMBOL_RECT_FILLED`, `NK_SYMBOL_RECT` to hopefully easier to understand `NK_SYMBOL_RECT_FILLED` and `NK_SYMBOL_RECT_OUTLINE`. - 2016/09/08 (1.17.0) - Changed confusing name for `NK_SYMBOL_CIRLCE_FILLED`, `NK_SYMBOL_CIRCLE` to hopefully easier to understand `NK_SYMBOL_CIRCLE_FILLED` and `NK_SYMBOL_CIRCLE_OUTLINE`. - 2016/09/08 (1.16.0) - Added additional checks to select correct types if `NK_INCLUDE_FIXED_TYPES` is not defined by supporting the biggest compiler GCC, clang and MSVC. - 2016/09/07 (1.15.3) - Fixed `NK_INCLUDE_COMMAND_USERDATA` define to not cause an error. - 2016/09/04 (1.15.2) - Fixed wrong combobox height calculation. - 2016/09/03 (1.15.1) - Fixed gaps inside combo boxes in OpenGL. - 2016/09/02 (1.15.0) - Changed nuklear to not have any default vertex layout and instead made it user provided. The range of types to convert to is quite limited at the moment, but I would be more than happy to accept PRs to add additional. - 2016/08/30 (1.14.2) - Removed unused variables. - 2016/08/30 (1.14.1) - Fixed C++ build errors. - 2016/08/30 (1.14.0) - Removed mouse dragging from SDL demo since it does not work correctly. - 2016/08/30 (1.13.4) - Tweaked some default styling variables. - 2016/08/30 (1.13.3) - Hopefully fixed drawing bug in slider, in general I would refrain from using slider with a big number of steps. - 2016/08/30 (1.13.2) - Fixed close and minimize button which would fire even if the window was in Read Only Mode. - 2016/08/30 (1.13.1) - Fixed popup panel padding handling which was previously just a hack for combo box and menu. - 2016/08/30 (1.13.0) - Removed `NK_WINDOW_DYNAMIC` flag from public API since it is bugged and causes issues in window selection. - 2016/08/30 (1.12.0) - Removed scaler size. The size of the scaler is now determined by the scrollbar size. - 2016/08/30 (1.11.2) - Fixed some drawing bugs caused by changes from 1.11.0. - 2016/08/30 (1.11.1) - Fixed overlapping minimized window selection. - 2016/08/30 (1.11.0) - Removed some internal complexity and overly complex code handling panel padding and panel border. - 2016/08/29 (1.10.0) - Added additional height parameter to `nk_combobox_xxx`. - 2016/08/29 (1.10.0) - Fixed drawing bug in dynamic popups. - 2016/08/29 (1.10.0) - Added experimental mouse scrolling to popups, menus and comboboxes. - 2016/08/26 (1.10.0) - Added window name string prepresentation to account for hash collisions. Currently limited to `NK_WINDOW_MAX_NAME` which in term can be redefined if not big enough. - 2016/08/26 (1.10.0) - Added stacks for temporary style/UI changes in code. - 2016/08/25 (1.10.0) - Changed `nk_input_is_key_pressed` and 'nk_input_is_key_released' to account for key press and release happening in one frame. - 2016/08/25 (1.10.0) - Added additional nk_edit flag to directly jump to the end on activate. - 2016/08/17 (1.09.6) - Removed invalid check for value zero in `nk_propertyx`. - 2016/08/16 (1.09.5) - Fixed ROM mode for deeper levels of popup windows parents. - 2016/08/15 (1.09.4) - Editbox are now still active if enter was pressed with flag `NK_EDIT_SIG_ENTER`. Main reasoning is to be able to keep typing after commiting. - 2016/08/15 (1.09.4) - Removed redundant code. - 2016/08/15 (1.09.4) - Fixed negative numbers in `nk_strtoi` and remove unused variable. - 2016/08/15 (1.09.3) - Fixed `NK_WINDOW_BACKGROUND` flag behavior to select a background window only as selected by hovering and not by clicking. - 2016/08/14 (1.09.2) - Fixed a bug in font atlas which caused wrong loading of glyphes for font with multiple ranges. - 2016/08/12 (1.09.1) - Added additional function to check if window is currently hidden and therefore not visible. - 2016/08/12 (1.09.1) - nk_window_is_closed now queries the correct flag `NK_WINDOW_CLOSED` instead of the old flag `NK_WINDOW_HIDDEN`. - 2016/08/09 (1.09.0) - Added additional double version to nk_property and changed the underlying implementation to not cast to float and instead work directly on the given values. - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal floating pointer number to string conversion for additional precision. - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal string to floating point number conversion for additional precision. - 2016/08/08 (1.07.2) - Fixed compiling error without define `NK_INCLUDE_FIXED_TYPE`. - 2016/08/08 (1.07.1) - Fixed possible floating point error inside `nk_widget` leading to wrong wiget width calculation which results in widgets falsly becomming tagged as not inside window and cannot be accessed. - 2016/08/08 (1.07.0) - Nuklear now differentiates between hiding a window (NK_WINDOW_HIDDEN) and closing a window (NK_WINDOW_CLOSED). A window can be hidden/shown by using `nk_window_show` and closed by either clicking the close icon in a window or by calling `nk_window_close`. Only closed windows get removed at the end of the frame while hidden windows remain. - 2016/08/08 (1.06.0) - Added `nk_edit_string_zero_terminated` as a second option to `nk_edit_string` which takes, edits and outputs a '\0' terminated string. - 2016/08/08 (1.05.4) - Fixed scrollbar auto hiding behavior. - 2016/08/08 (1.05.3) - Fixed wrong panel padding selection in `nk_layout_widget_space`. - 2016/08/07 (1.05.2) - Fixed old bug in dynamic immediate mode layout API, calculating wrong item spacing and panel width. - 2016/08/07 (1.05.1) - Hopefully finally fixed combobox popup drawing bug. - 2016/08/07 (1.05.0) - Split varargs away from `NK_INCLUDE_STANDARD_IO` into own define `NK_INCLUDE_STANDARD_VARARGS` to allow more fine grained controlled over library includes. - 2016/08/06 (1.04.5) - Changed memset calls to `NK_MEMSET`. - 2016/08/04 (1.04.4) - Fixed fast window scaling behavior. - 2016/08/04 (1.04.3) - Fixed window scaling, movement bug which appears if you move/scale a window and another window is behind it. If you are fast enough then the window behind gets activated and the operation is blocked. I now require activating by hovering only if mouse is not pressed. - 2016/08/04 (1.04.2) - Fixed changing fonts. - 2016/08/03 (1.04.1) - Fixed `NK_WINDOW_BACKGROUND` behavior. - 2016/08/03 (1.04.0) - Added color parameter to `nk_draw_image`. - 2016/08/03 (1.04.0) - Added additional window padding style attributes for sub windows (combo, menu, ...). - 2016/08/03 (1.04.0) - Added functions to show/hide software cursor. - 2016/08/03 (1.04.0) - Added `NK_WINDOW_BACKGROUND` flag to force a window to be always in the background of the screen. - 2016/08/03 (1.03.2) - Removed invalid assert macro for NK_RGB color picker. - 2016/08/01 (1.03.1) - Added helper macros into header include guard. - 2016/07/29 (1.03.0) - Moved the window/table pool into the header part to simplify memory management by removing the need to allocate the pool. - 2016/07/29 (1.02.0) - Added auto scrollbar hiding window flag which if enabled will hide the window scrollbar after NK_SCROLLBAR_HIDING_TIMEOUT seconds without window interaction. To make it work you have to also set a delta time inside the `nk_context`. - 2016/07/25 (1.01.1) - Fixed small panel and panel border drawing bugs. - 2016/07/15 (1.01.0) - Added software cursor to `nk_style` and `nk_context`. - 2016/07/15 (1.01.0) - Added const correctness to `nk_buffer_push' data argument. - 2016/07/15 (1.01.0) - Removed internal font baking API and simplified font atlas memory management by converting pointer arrays for fonts and font configurations to lists. - 2016/07/15 (1.00.0) - Changed button API to use context dependend button behavior instead of passing it for every function call. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ## Gallery ![Figure [blue]: Feature overview with blue color styling](https://cloud.githubusercontent.com/assets/8057201/13538240/acd96876-e249-11e5-9547-5ac0b19667a0.png) ![Figure [red]: Feature overview with red color styling](https://cloud.githubusercontent.com/assets/8057201/13538243/b04acd4c-e249-11e5-8fd2-ad7744a5b446.png) ![Figure [widgets]: Widget overview](https://cloud.githubusercontent.com/assets/8057201/11282359/3325e3c6-8eff-11e5-86cb-cf02b0596087.png) ![Figure [blackwhite]: Black and white](https://cloud.githubusercontent.com/assets/8057201/11033668/59ab5d04-86e5-11e5-8091-c56f16411565.png) ![Figure [filexp]: File explorer](https://cloud.githubusercontent.com/assets/8057201/10718115/02a9ba08-7b6b-11e5-950f-adacdd637739.png) ![Figure [opengl]: OpenGL Editor](https://cloud.githubusercontent.com/assets/8057201/12779619/2a20d72c-ca69-11e5-95fe-4edecf820d5c.png) ![Figure [nodedit]: Node Editor](https://cloud.githubusercontent.com/assets/8057201/9976995/e81ac04a-5ef7-11e5-872b-acd54fbeee03.gif) ![Figure [skinning]: Using skinning in Nuklear](https://cloud.githubusercontent.com/assets/8057201/15991632/76494854-30b8-11e6-9555-a69840d0d50b.png) ![Figure [bf]: Heavy modified version](https://cloud.githubusercontent.com/assets/8057201/14902576/339926a8-0d9c-11e6-9fee-a8b73af04473.png) ## Credits Developed by Micha Mettke and every direct or indirect github contributor.

Embeds [stb_texedit](https://github.com/nothings/stb/blob/master/stb_textedit.h), [stb_truetype](https://github.com/nothings/stb/blob/master/stb_truetype.h) and [stb_rectpack](https://github.com/nothings/stb/blob/master/stb_rect_pack.h) by Sean Barret (public domain)
Uses [stddoc.c](https://github.com/r-lyeh/stddoc.c) from r-lyeh@github.com for documentation generation

Embeds ProggyClean.ttf font by Tristan Grimmer (MIT license).
Big thank you to Omar Cornut (ocornut@github) for his [imgui library](https://github.com/ocornut/imgui) and giving me the inspiration for this library, Casey Muratori for handmade hero and his original immediate mode graphical user interface idea and Sean Barret for his amazing single header libraries which restored my faith in libraries and brought me to create some of my own. Finally Apoorva Joshi for his single header file packer. ================================================ FILE: doc/stddoc.c ================================================ /// ## About /// - _stddoc.c_ is a tiny documentation generator for 60 programming languages. /// - This page sample was auto-generated from the code comments found in `stddoc.c` file. /// /// ## How does it work? /// - Markdeep code comments are extracted from stdin and printed into stdout as a HTML file. /// /// ## Supported languages /// - `/// Three slashes comment` [ActionScript, AngelScript, C (C99), C#, C++, ChaiScript, D, /// GameMonkey, GML, Go, Java, JavaScript, JetScript, jtc, Jx9, Kotlin, Neko, Object Pascal (Delphi), /// Objective-C, Pawn, PHP, QuakeC, Rust, SASS, Scala, Squirrel, Swift, Vala, Wren, Xojo]. /// - `--- Three dashes comment` [Ada, AppleScript, Eiffel, Euphoria, Haskell, Lua, Occam, /// PL/SQL, PSL, SGML, SPARK, SQL, Terra, TSQL, VHDL]. /// - `### Three hashes comment` [AWK, Bash, Bourne shell, C shell, Cobra, Maple, Maple, /// Perl, Perl6, PowerShell, Python, R, Ruby, Seed7, Tcl]. /// /// ## Usage /// - `stddoc < source.code > documentation.html` /// /// ## Changelog /// 2018/01/07 /// : Initial version (_v1.0.0_) /// /// ## License /// - rlyeh, unlicensed (~public domain). #include int main() { printf("%s\n", ""); printf("%s\n", ""); for( int fsm_S = 0, fsm_D = 0, fsm_H = 0; !feof(stdin); ) { int chr = getc(stdin); if( fsm_S > 3 || fsm_D > 3 || fsm_H > 3 ) { putc(chr, stdout); if( chr != '\r' && chr != '\n' ) continue; } /**/ if( fsm_S <= 2 && chr == '/' && !fsm_D && !fsm_H ) fsm_S++; else if( fsm_S == 3 && chr == ' ' && !fsm_D && !fsm_H ) fsm_S++; else if( fsm_D <= 2 && chr == '-' && !fsm_S && !fsm_H ) fsm_D++; else if( fsm_D == 3 && chr == ' ' && !fsm_S && !fsm_H ) fsm_D++; else if( fsm_H <= 2 && chr == '#' && !fsm_S && !fsm_D ) fsm_H++; else if( fsm_H == 3 && chr == ' ' && !fsm_S && !fsm_D ) fsm_H++; else fsm_S = fsm_D = fsm_H = 0; } printf("%s\n", ""); printf("%s\n", ""); } /// /// ## **Example page!** /// /// Imaginary documentation page. Here would be some introduction text. /// /// The table of contents that Markdeep produces is stuffed on the right side, /// if the browser window is wide enough. Otherwise it is hidden. /// /// ### Basic Markdeep /// /// Regular styling like **bold**, _italics_, ~~strikethrough~~, `inline code`, etc. Lists as: /// /// * A /// * Bullet /// * List /// /// And: /// /// 1. A /// 1. Numbered /// 1. List! /// /// Symbol substitutions: a 45-degree turn; som x -> y arrows; some whoa ==> fancy <==> arrows. /// /// Is this a definition list? /// : Looks like one to me /// Is that right? /// : Possibly! /// /// And a code listing: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// int main() /// { /// return 1; /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// /// ### Tables /// /// Thing Name | Description |Notes /// ------------------------|--------------------|----- /// Yes | Yup! | /// No | Nope :( | /// FileNotFound | Doesn't find files | Pass `-sFIND_FILE=maybe` to maybe find them /// /// /// ### Diagrams /// /// ******************************************* Here's a text to the right of the diagram, /// * +-----------------+ .-. * ain't that fancy. Pretty fancy indeed, I /// * |\ | .-+ | * must say! Markdeep diagrams are generally /// * | \ A-B *---+--> .--+ '--. * enclosed into a rectangle full made of `*` /// * | \ | | Cloud! | * symbols; and are "drawn" using ASCII-art /// * +---+-------------+ '-------------' * style, with `- | + / \ * o` etc. /// ******************************************* Suh-weet! /// /// Another random diagram, just because: /// /// ******************** /// * +-+-+-+-*-o * /// * / / ^ / * /// * / v / / * /// * +-+-+-+ * /// ******************** /// /// ### Special notes /// /// !!! Note /// Hey I'm a note. Don't mind me, I'm just sitting here. /// /// !!! WARNING /// I'm a warning, perhaps. *Something might happen!* /// /// !!! Error: Never Pass `nullptr` to a Shader /// Invoking a shader with a null argument can seg fault. /// This is a multi-line admonition. /// /// Seriously, don't call shaders like that. /// /// ### Embedding HTML /// /// 
/// This is an embedded html node by the way!
///
/// /// ## Credits /// - API doc style created by [Aras Pranckevičius](https://github.com/aras-p) /// - Markdeep by [Morgan McGuire](https://casual-effects.com/markdeep/). ================================================ FILE: example/Makefile ================================================ # Flags CFLAGS += -std=c99 -pedantic -O2 LIBS := ifeq ($(OS),Windows_NT) BIN := $(BIN).exe LIBS := -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32 else UNAME_S := $(shell uname -s) GLFW3 := $(shell pkg-config --libs glfw3) ifeq ($(UNAME_S),Darwin) LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib CFLAGS += -I/usr/local/include else LIBS := $(GLFW3) -lGL -lm -lGLU -lGLEW endif endif all: generate file_browser extended canvas skinning generate: clean ifeq ($(OS),Windows_NT) @mkdir bin 2> nul || exit 0 else @mkdir -p bin endif clean: @rm -rf bin file_browser: generate $(CC) $(CFLAGS) -o bin/file_browser file_browser.c $(LIBS) extended: generate $(CC) $(CFLAGS) -o bin/extended extended.c $(LIBS) canvas: generate $(CC) $(CFLAGS) -o bin/canvas canvas.c $(LIBS) skinning: generate $(CC) $(CFLAGS) -o bin/skinning skinning.c $(LIBS) ================================================ FILE: example/canvas.c ================================================ /* nuklear - v1.05 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_PRIVATE #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #include "../nuklear.h" #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" /* macros */ #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) #define NK_SHADER_VERSION "#version 150\n" /* =============================================================== * * DEVICE * * ===============================================================*/ struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } /* function icon_load () is not used to build this file but might still be useful :) */ /* static struct nk_image icon_load(const char *filename) { int x,y,n; GLuint tex; unsigned char *data = stbi_load(filename, &x, &y, &n, 0); if (!data) die("[SDL]: failed to load image: %s", filename); glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); glGenerateMipmap(GL_TEXTURE_2D); stbi_image_free(data); return nk_image_id((int)tex); } */ static void device_init(struct device *dev) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } static void device_upload_atlas(struct device *dev, const void *image, int width, int height) { glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } static void device_shutdown(struct device *dev) { glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } static void device_draw(struct device *dev, struct nk_context *ctx, int width, int height, enum nk_anti_aliasing AA) { GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, MAX_VERTEX_MEMORY, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_ELEMENT_MEMORY, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ {struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, MAX_VERTEX_MEMORY); nk_buffer_init_fixed(&ebuf, elements, MAX_ELEMENT_MEMORY); nk_convert(ctx, &dev->cmds, &vbuf, &ebuf, &config);} } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), (GLint)(cmd->clip_rect.w), (GLint)(cmd->clip_rect.h)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } /* glfw callbacks (I don't know if there is a easier way to access text and scroll )*/ static void error_callback(int e, const char *d){printf("Error %d: %s\n", e, d);} static void text_input(GLFWwindow *win, unsigned int codepoint) {nk_input_unicode((struct nk_context*)glfwGetWindowUserPointer(win), codepoint);} static void scroll_input(GLFWwindow *win, double _, double yoff) {UNUSED(_);nk_input_scroll((struct nk_context*)glfwGetWindowUserPointer(win), nk_vec2(0, (float)yoff));} static void pump_input(struct nk_context *ctx, GLFWwindow *win) { double x, y; nk_input_begin(ctx); glfwPollEvents(); nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); nk_input_key(ctx, NK_KEY_SHIFT, 1); } else { nk_input_key(ctx, NK_KEY_COPY, 0); nk_input_key(ctx, NK_KEY_PASTE, 0); nk_input_key(ctx, NK_KEY_CUT, 0); nk_input_key(ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(ctx, (int)x, (int)y); nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_end(ctx); } struct nk_canvas { struct nk_command_buffer *painter; struct nk_vec2 item_spacing; struct nk_vec2 panel_padding; struct nk_style_item window_background; }; static void canvas_begin(struct nk_context *ctx, struct nk_canvas *canvas, nk_flags flags, int x, int y, int width, int height, struct nk_color background_color) { /* save style properties which will be overwritten */ canvas->panel_padding = ctx->style.window.padding; canvas->item_spacing = ctx->style.window.spacing; canvas->window_background = ctx->style.window.fixed_background; /* use the complete window space and set background */ ctx->style.window.spacing = nk_vec2(0,0); ctx->style.window.padding = nk_vec2(0,0); ctx->style.window.fixed_background = nk_style_item_color(background_color); /* create/update window and set position + size */ flags = flags & ~NK_WINDOW_DYNAMIC; nk_window_set_bounds(ctx, "Window", nk_rect(x, y, width, height)); nk_begin(ctx, "Window", nk_rect(x, y, width, height), NK_WINDOW_NO_SCROLLBAR|flags); /* allocate the complete window space for drawing */ {struct nk_rect total_space; total_space = nk_window_get_content_region(ctx); nk_layout_row_dynamic(ctx, total_space.h, 1); nk_widget(&total_space, ctx); canvas->painter = nk_window_get_canvas(ctx);} } static void canvas_end(struct nk_context *ctx, struct nk_canvas *canvas) { nk_end(ctx); ctx->style.window.spacing = canvas->panel_padding; ctx->style.window.padding = canvas->item_spacing; ctx->style.window.fixed_background = canvas->window_background; } int main(int argc, char *argv[]) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; /* GUI */ struct device device; struct nk_font_atlas atlas; struct nk_context ctx; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwSetWindowUserPointer(win, &ctx); glfwSetCharCallback(win, text_input); glfwSetScrollCallback(win, scroll_input); glfwGetWindowSize(win, &width, &height); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } /* GUI */ {device_init(&device); {const void *image; int w, h; struct nk_font *font; nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); font = nk_font_atlas_add_default(&atlas, 13, 0); image = nk_font_atlas_bake(&atlas, &w, &h, NK_FONT_ATLAS_RGBA32); device_upload_atlas(&device, image, w, h); nk_font_atlas_end(&atlas, nk_handle_id((int)device.font_tex), &device.null); nk_init_default(&ctx, &font->handle); glEnable(GL_TEXTURE_2D); while (!glfwWindowShouldClose(win)) { /* input */ pump_input(&ctx, win); /* draw */ {struct nk_canvas canvas; canvas_begin(&ctx, &canvas, 0, 0, 0, width, height, nk_rgb(250,250,250)); { nk_fill_rect(canvas.painter, nk_rect(15,15,210,210), 5, nk_rgb(247, 230, 154)); nk_fill_rect(canvas.painter, nk_rect(20,20,200,200), 5, nk_rgb(188, 174, 118)); nk_draw_text(canvas.painter, nk_rect(30, 30, 150, 20), "Text to draw", 12, &font->handle, nk_rgb(188,174,118), nk_rgb(0,0,0)); nk_fill_rect(canvas.painter, nk_rect(250,20,100,100), 0, nk_rgb(0,0,255)); nk_fill_circle(canvas.painter, nk_rect(20,250,100,100), nk_rgb(255,0,0)); nk_fill_triangle(canvas.painter, 250, 250, 350, 250, 300, 350, nk_rgb(0,255,0)); nk_fill_arc(canvas.painter, 300, 180, 50, 0, 3.141592654f * 3.0f / 4.0f, nk_rgb(255,255,0)); {float points[12]; points[0] = 200; points[1] = 250; points[2] = 250; points[3] = 350; points[4] = 225; points[5] = 350; points[6] = 200; points[7] = 300; points[8] = 175; points[9] = 350; points[10] = 150; points[11] = 350; nk_fill_polygon(canvas.painter, points, 6, nk_rgb(0,0,0));} nk_stroke_line(canvas.painter, 15, 10, 200, 10, 2.0f, nk_rgb(189,45,75)); nk_stroke_rect(canvas.painter, nk_rect(370, 20, 100, 100), 10, 3, nk_rgb(0,0,255)); nk_stroke_curve(canvas.painter, 380, 200, 405, 270, 455, 120, 480, 200, 2, nk_rgb(0,150,220)); nk_stroke_circle(canvas.painter, nk_rect(20, 370, 100, 100), 5, nk_rgb(0,255,120)); nk_stroke_triangle(canvas.painter, 370, 250, 470, 250, 420, 350, 6, nk_rgb(255,0,143)); } canvas_end(&ctx, &canvas);} /* Draw */ glfwGetWindowSize(win, &width, &height); glViewport(0, 0, width, height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(0.2f, 0.2f, 0.2f, 1.0f); device_draw(&device, &ctx, width, height, NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); }}} nk_font_atlas_clear(&atlas); nk_free(&ctx); device_shutdown(&device); glfwTerminate(); return 0; } ================================================ FILE: example/extended.c ================================================ /* nuklear - v1.05 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #include "../nuklear.h" #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" /* macros */ #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif struct media { struct nk_font *font_14; struct nk_font *font_18; struct nk_font *font_20; struct nk_font *font_22; struct nk_image unchecked; struct nk_image checked; struct nk_image rocket; struct nk_image cloud; struct nk_image pen; struct nk_image play; struct nk_image pause; struct nk_image stop; struct nk_image prev; struct nk_image next; struct nk_image tools; struct nk_image dir; struct nk_image copy; struct nk_image convert; struct nk_image del; struct nk_image edit; struct nk_image images[9]; struct nk_image menu[6]; }; /* =============================================================== * * CUSTOM WIDGET * * ===============================================================*/ static int ui_piemenu(struct nk_context *ctx, struct nk_vec2 pos, float radius, struct nk_image *icons, int item_count) { int ret = -1; struct nk_rect total_space; struct nk_rect bounds; int active_item = 0; /* pie menu popup */ struct nk_color border = ctx->style.window.border_color; struct nk_style_item background = ctx->style.window.fixed_background; ctx->style.window.fixed_background = nk_style_item_hide(); ctx->style.window.border_color = nk_rgba(0,0,0,0); total_space = nk_window_get_content_region(ctx); ctx->style.window.spacing = nk_vec2(0,0); ctx->style.window.padding = nk_vec2(0,0); if (nk_popup_begin(ctx, NK_POPUP_STATIC, "piemenu", NK_WINDOW_NO_SCROLLBAR, nk_rect(pos.x - total_space.x - radius, pos.y - radius - total_space.y, 2*radius,2*radius))) { int i = 0; struct nk_command_buffer* out = nk_window_get_canvas(ctx); const struct nk_input *in = &ctx->input; total_space = nk_window_get_content_region(ctx); ctx->style.window.spacing = nk_vec2(4,4); ctx->style.window.padding = nk_vec2(8,8); nk_layout_row_dynamic(ctx, total_space.h, 1); nk_widget(&bounds, ctx); /* outer circle */ nk_fill_circle(out, bounds, nk_rgb(50,50,50)); { /* circle buttons */ float step = (2 * 3.141592654f) / (float)(MAX(1,item_count)); float a_min = 0; float a_max = step; struct nk_vec2 center = nk_vec2(bounds.x + bounds.w / 2.0f, bounds.y + bounds.h / 2.0f); struct nk_vec2 drag = nk_vec2(in->mouse.pos.x - center.x, in->mouse.pos.y - center.y); float angle = (float)atan2(drag.y, drag.x); if (angle < -0.0f) angle += 2.0f * 3.141592654f; active_item = (int)(angle/step); for (i = 0; i < item_count; ++i) { struct nk_rect content; float rx, ry, dx, dy, a; nk_fill_arc(out, center.x, center.y, (bounds.w/2.0f), a_min, a_max, (active_item == i) ? nk_rgb(45,100,255): nk_rgb(60,60,60)); /* separator line */ rx = bounds.w/2.0f; ry = 0; dx = rx * (float)cos(a_min) - ry * (float)sin(a_min); dy = rx * (float)sin(a_min) + ry * (float)cos(a_min); nk_stroke_line(out, center.x, center.y, center.x + dx, center.y + dy, 1.0f, nk_rgb(50,50,50)); /* button content */ a = a_min + (a_max - a_min)/2.0f; rx = bounds.w/2.5f; ry = 0; content.w = 30; content.h = 30; content.x = center.x + ((rx * (float)cos(a) - ry * (float)sin(a)) - content.w/2.0f); content.y = center.y + (rx * (float)sin(a) + ry * (float)cos(a) - content.h/2.0f); nk_draw_image(out, content, &icons[i], nk_rgb(255,255,255)); a_min = a_max; a_max += step; } } { /* inner circle */ struct nk_rect inner; inner.x = bounds.x + bounds.w/2 - bounds.w/4; inner.y = bounds.y + bounds.h/2 - bounds.h/4; inner.w = bounds.w/2; inner.h = bounds.h/2; nk_fill_circle(out, inner, nk_rgb(45,45,45)); /* active icon content */ bounds.w = inner.w / 2.0f; bounds.h = inner.h / 2.0f; bounds.x = inner.x + inner.w/2 - bounds.w/2; bounds.y = inner.y + inner.h/2 - bounds.h/2; nk_draw_image(out, bounds, &icons[active_item], nk_rgb(255,255,255)); } nk_layout_space_end(ctx); if (!nk_input_is_mouse_down(&ctx->input, NK_BUTTON_RIGHT)) { nk_popup_close(ctx); ret = active_item; } } else ret = -2; ctx->style.window.spacing = nk_vec2(4,4); ctx->style.window.padding = nk_vec2(8,8); nk_popup_end(ctx); ctx->style.window.fixed_background = background; ctx->style.window.border_color = border; return ret; } /* =============================================================== * * GRID * * ===============================================================*/ static void grid_demo(struct nk_context *ctx, struct media *media) { static char text[3][64]; static int text_len[3]; static const char *items[] = {"Item 0","item 1","item 2"}; static int selected_item = 0; static int check = 1; int i; nk_style_set_font(ctx, &media->font_20->handle); if (nk_begin(ctx, "Grid Demo", nk_rect(600, 350, 275, 250), NK_WINDOW_TITLE|NK_WINDOW_BORDER|NK_WINDOW_MOVABLE| NK_WINDOW_NO_SCROLLBAR)) { nk_style_set_font(ctx, &media->font_18->handle); nk_layout_row_dynamic(ctx, 30, 2); nk_label(ctx, "Floating point:", NK_TEXT_RIGHT); nk_edit_string(ctx, NK_EDIT_FIELD, text[0], &text_len[0], 64, nk_filter_float); nk_label(ctx, "Hexadecimal:", NK_TEXT_RIGHT); nk_edit_string(ctx, NK_EDIT_FIELD, text[1], &text_len[1], 64, nk_filter_hex); nk_label(ctx, "Binary:", NK_TEXT_RIGHT); nk_edit_string(ctx, NK_EDIT_FIELD, text[2], &text_len[2], 64, nk_filter_binary); nk_label(ctx, "Checkbox:", NK_TEXT_RIGHT); nk_checkbox_label(ctx, "Check me", &check); nk_label(ctx, "Combobox:", NK_TEXT_RIGHT); if (nk_combo_begin_label(ctx, items[selected_item], nk_vec2(nk_widget_width(ctx), 200))) { nk_layout_row_dynamic(ctx, 25, 1); for (i = 0; i < 3; ++i) if (nk_combo_item_label(ctx, items[i], NK_TEXT_LEFT)) selected_item = i; nk_combo_end(ctx); } } nk_end(ctx); nk_style_set_font(ctx, &media->font_14->handle); } /* =============================================================== * * BUTTON DEMO * * ===============================================================*/ static void ui_header(struct nk_context *ctx, struct media *media, const char *title) { nk_style_set_font(ctx, &media->font_18->handle); nk_layout_row_dynamic(ctx, 20, 1); nk_label(ctx, title, NK_TEXT_LEFT); } static void ui_widget(struct nk_context *ctx, struct media *media, float height) { static const float ratio[] = {0.15f, 0.85f}; nk_style_set_font(ctx, &media->font_22->handle); nk_layout_row(ctx, NK_DYNAMIC, height, 2, ratio); nk_spacing(ctx, 1); } static void ui_widget_centered(struct nk_context *ctx, struct media *media, float height) { static const float ratio[] = {0.15f, 0.50f, 0.35f}; nk_style_set_font(ctx, &media->font_22->handle); nk_layout_row(ctx, NK_DYNAMIC, height, 3, ratio); nk_spacing(ctx, 1); } static void button_demo(struct nk_context *ctx, struct media *media) { static int option = 1; static int toggle0 = 1; static int toggle1 = 0; static int toggle2 = 1; nk_style_set_font(ctx, &media->font_20->handle); nk_begin(ctx, "Button Demo", nk_rect(50,50,255,610), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_TITLE); /*------------------------------------------------ * MENU *------------------------------------------------*/ nk_menubar_begin(ctx); { /* toolbar */ nk_layout_row_static(ctx, 40, 40, 4); if (nk_menu_begin_image(ctx, "Music", media->play, nk_vec2(110,120))) { /* settings */ nk_layout_row_dynamic(ctx, 25, 1); nk_menu_item_image_label(ctx, media->play, "Play", NK_TEXT_RIGHT); nk_menu_item_image_label(ctx, media->stop, "Stop", NK_TEXT_RIGHT); nk_menu_item_image_label(ctx, media->pause, "Pause", NK_TEXT_RIGHT); nk_menu_item_image_label(ctx, media->next, "Next", NK_TEXT_RIGHT); nk_menu_item_image_label(ctx, media->prev, "Prev", NK_TEXT_RIGHT); nk_menu_end(ctx); } nk_button_image(ctx, media->tools); nk_button_image(ctx, media->cloud); nk_button_image(ctx, media->pen); } nk_menubar_end(ctx); /*------------------------------------------------ * BUTTON *------------------------------------------------*/ ui_header(ctx, media, "Push buttons"); ui_widget(ctx, media, 35); if (nk_button_label(ctx, "Push me")) fprintf(stdout, "pushed!\n"); ui_widget(ctx, media, 35); if (nk_button_image_label(ctx, media->rocket, "Styled", NK_TEXT_CENTERED)) fprintf(stdout, "rocket!\n"); /*------------------------------------------------ * REPEATER *------------------------------------------------*/ ui_header(ctx, media, "Repeater"); ui_widget(ctx, media, 35); if (nk_button_label(ctx, "Press me")) fprintf(stdout, "pressed!\n"); /*------------------------------------------------ * TOGGLE *------------------------------------------------*/ ui_header(ctx, media, "Toggle buttons"); ui_widget(ctx, media, 35); if (nk_button_image_label(ctx, (toggle0) ? media->checked: media->unchecked, "Toggle", NK_TEXT_LEFT)) toggle0 = !toggle0; ui_widget(ctx, media, 35); if (nk_button_image_label(ctx, (toggle1) ? media->checked: media->unchecked, "Toggle", NK_TEXT_LEFT)) toggle1 = !toggle1; ui_widget(ctx, media, 35); if (nk_button_image_label(ctx, (toggle2) ? media->checked: media->unchecked, "Toggle", NK_TEXT_LEFT)) toggle2 = !toggle2; /*------------------------------------------------ * RADIO *------------------------------------------------*/ ui_header(ctx, media, "Radio buttons"); ui_widget(ctx, media, 35); if (nk_button_symbol_label(ctx, (option == 0)?NK_SYMBOL_CIRCLE_OUTLINE:NK_SYMBOL_CIRCLE_SOLID, "Select", NK_TEXT_LEFT)) option = 0; ui_widget(ctx, media, 35); if (nk_button_symbol_label(ctx, (option == 1)?NK_SYMBOL_CIRCLE_OUTLINE:NK_SYMBOL_CIRCLE_SOLID, "Select", NK_TEXT_LEFT)) option = 1; ui_widget(ctx, media, 35); if (nk_button_symbol_label(ctx, (option == 2)?NK_SYMBOL_CIRCLE_OUTLINE:NK_SYMBOL_CIRCLE_SOLID, "Select", NK_TEXT_LEFT)) option = 2; /*------------------------------------------------ * CONTEXTUAL *------------------------------------------------*/ nk_style_set_font(ctx, &media->font_18->handle); if (nk_contextual_begin(ctx, NK_WINDOW_NO_SCROLLBAR, nk_vec2(150, 300), nk_window_get_bounds(ctx))) { nk_layout_row_dynamic(ctx, 30, 1); if (nk_contextual_item_image_label(ctx, media->copy, "Clone", NK_TEXT_RIGHT)) fprintf(stdout, "pressed clone!\n"); if (nk_contextual_item_image_label(ctx, media->del, "Delete", NK_TEXT_RIGHT)) fprintf(stdout, "pressed delete!\n"); if (nk_contextual_item_image_label(ctx, media->convert, "Convert", NK_TEXT_RIGHT)) fprintf(stdout, "pressed convert!\n"); if (nk_contextual_item_image_label(ctx, media->edit, "Edit", NK_TEXT_RIGHT)) fprintf(stdout, "pressed edit!\n"); nk_contextual_end(ctx); } nk_style_set_font(ctx, &media->font_14->handle); nk_end(ctx); } /* =============================================================== * * BASIC DEMO * * ===============================================================*/ static void basic_demo(struct nk_context *ctx, struct media *media) { static int image_active; static int check0 = 1; static int check1 = 0; static size_t prog = 80; static int selected_item = 0; static int selected_image = 3; static int selected_icon = 0; static const char *items[] = {"Item 0","item 1","item 2"}; static int piemenu_active = 0; static struct nk_vec2 piemenu_pos; int i = 0; nk_style_set_font(ctx, &media->font_20->handle); nk_begin(ctx, "Basic Demo", nk_rect(320, 50, 275, 610), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_TITLE); /*------------------------------------------------ * POPUP BUTTON *------------------------------------------------*/ ui_header(ctx, media, "Popup & Scrollbar & Images"); ui_widget(ctx, media, 35); if (nk_button_image_label(ctx, media->dir, "Images", NK_TEXT_CENTERED)) image_active = !image_active; /*------------------------------------------------ * SELECTED IMAGE *------------------------------------------------*/ ui_header(ctx, media, "Selected Image"); ui_widget_centered(ctx, media, 100); nk_image(ctx, media->images[selected_image]); /*------------------------------------------------ * IMAGE POPUP *------------------------------------------------*/ if (image_active) { struct nk_panel popup; if (nk_popup_begin(ctx, NK_POPUP_STATIC, "Image Popup", 0, nk_rect(265, 0, 320, 220))) { nk_layout_row_static(ctx, 82, 82, 3); for (i = 0; i < 9; ++i) { if (nk_button_image(ctx, media->images[i])) { selected_image = i; image_active = 0; nk_popup_close(ctx); } } nk_popup_end(ctx); } } /*------------------------------------------------ * COMBOBOX *------------------------------------------------*/ ui_header(ctx, media, "Combo box"); ui_widget(ctx, media, 40); if (nk_combo_begin_label(ctx, items[selected_item], nk_vec2(nk_widget_width(ctx), 200))) { nk_layout_row_dynamic(ctx, 35, 1); for (i = 0; i < 3; ++i) if (nk_combo_item_label(ctx, items[i], NK_TEXT_LEFT)) selected_item = i; nk_combo_end(ctx); } ui_widget(ctx, media, 40); if (nk_combo_begin_image_label(ctx, items[selected_icon], media->images[selected_icon], nk_vec2(nk_widget_width(ctx), 200))) { nk_layout_row_dynamic(ctx, 35, 1); for (i = 0; i < 3; ++i) if (nk_combo_item_image_label(ctx, media->images[i], items[i], NK_TEXT_RIGHT)) selected_icon = i; nk_combo_end(ctx); } /*------------------------------------------------ * CHECKBOX *------------------------------------------------*/ ui_header(ctx, media, "Checkbox"); ui_widget(ctx, media, 30); nk_checkbox_label(ctx, "Flag 1", &check0); ui_widget(ctx, media, 30); nk_checkbox_label(ctx, "Flag 2", &check1); /*------------------------------------------------ * PROGRESSBAR *------------------------------------------------*/ ui_header(ctx, media, "Progressbar"); ui_widget(ctx, media, 35); nk_progress(ctx, &prog, 100, nk_true); /*------------------------------------------------ * PIEMENU *------------------------------------------------*/ if (nk_input_is_mouse_click_down_in_rect(&ctx->input, NK_BUTTON_RIGHT, nk_window_get_bounds(ctx),nk_true)){ piemenu_pos = ctx->input.mouse.pos; piemenu_active = 1; } if (piemenu_active) { int ret = ui_piemenu(ctx, piemenu_pos, 140, &media->menu[0], 6); if (ret == -2) piemenu_active = 0; if (ret != -1) { fprintf(stdout, "piemenu selected: %d\n", ret); piemenu_active = 0; } } nk_style_set_font(ctx, &media->font_14->handle); nk_end(ctx); } /* =============================================================== * * DEVICE * * ===============================================================*/ struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static struct nk_image icon_load(const char *filename) { int x,y,n; GLuint tex; unsigned char *data = stbi_load(filename, &x, &y, &n, 0); if (!data) die("[SDL]: failed to load image: %s", filename); glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); glGenerateMipmap(GL_TEXTURE_2D); stbi_image_free(data); return nk_image_id((int)tex); } static void device_init(struct device *dev) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } static void device_upload_atlas(struct device *dev, const void *image, int width, int height) { glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } static void device_shutdown(struct device *dev) { glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } static void device_draw(struct device *dev, struct nk_context *ctx, int width, int height, struct nk_vec2 scale, enum nk_anti_aliasing AA) { GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, MAX_VERTEX_MEMORY, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_ELEMENT_MEMORY, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ {struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, MAX_VERTEX_MEMORY); nk_buffer_init_fixed(&ebuf, elements, MAX_ELEMENT_MEMORY); nk_convert(ctx, &dev->cmds, &vbuf, &ebuf, &config);} } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } /* glfw callbacks (I don't know if there is a easier way to access text and scroll )*/ static void error_callback(int e, const char *d){printf("Error %d: %s\n", e, d);} static void text_input(GLFWwindow *win, unsigned int codepoint) {nk_input_unicode((struct nk_context*)glfwGetWindowUserPointer(win), codepoint);} static void scroll_input(GLFWwindow *win, double _, double yoff) {UNUSED(_);nk_input_scroll((struct nk_context*)glfwGetWindowUserPointer(win), nk_vec2(0, (float)yoff));} int main(int argc, char *argv[]) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; int display_width=0, display_height=0; /* GUI */ struct device device; struct nk_font_atlas atlas; struct media media; struct nk_context ctx; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); #ifdef __APPLE__ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); #endif win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwSetWindowUserPointer(win, &ctx); glfwSetCharCallback(win, text_input); glfwSetScrollCallback(win, scroll_input); glfwGetWindowSize(win, &width, &height); glfwGetFramebufferSize(win, &display_width, &display_height); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } {/* GUI */ device_init(&device); {const void *image; int w, h; struct nk_font_config cfg = nk_font_config(0); cfg.oversample_h = 3; cfg.oversample_v = 2; /* Loading one font with different heights is only required if you want higher * quality text otherwise you can just set the font height directly * e.g.: ctx->style.font.height = 20. */ nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); media.font_14 = nk_font_atlas_add_from_file(&atlas, "../../extra_font/Roboto-Regular.ttf", 14.0f, &cfg); media.font_18 = nk_font_atlas_add_from_file(&atlas, "../../extra_font/Roboto-Regular.ttf", 18.0f, &cfg); media.font_20 = nk_font_atlas_add_from_file(&atlas, "../../extra_font/Roboto-Regular.ttf", 20.0f, &cfg); media.font_22 = nk_font_atlas_add_from_file(&atlas, "../../extra_font/Roboto-Regular.ttf", 22.0f, &cfg); image = nk_font_atlas_bake(&atlas, &w, &h, NK_FONT_ATLAS_RGBA32); device_upload_atlas(&device, image, w, h); nk_font_atlas_end(&atlas, nk_handle_id((int)device.font_tex), &device.null);} nk_init_default(&ctx, &media.font_14->handle);} /* icons */ glEnable(GL_TEXTURE_2D); media.unchecked = icon_load("../icon/unchecked.png"); media.checked = icon_load("../icon/checked.png"); media.rocket = icon_load("../icon/rocket.png"); media.cloud = icon_load("../icon/cloud.png"); media.pen = icon_load("../icon/pen.png"); media.play = icon_load("../icon/play.png"); media.pause = icon_load("../icon/pause.png"); media.stop = icon_load("../icon/stop.png"); media.next = icon_load("../icon/next.png"); media.prev = icon_load("../icon/prev.png"); media.tools = icon_load("../icon/tools.png"); media.dir = icon_load("../icon/directory.png"); media.copy = icon_load("../icon/copy.png"); media.convert = icon_load("../icon/export.png"); media.del = icon_load("../icon/delete.png"); media.edit = icon_load("../icon/edit.png"); media.menu[0] = icon_load("../icon/home.png"); media.menu[1] = icon_load("../icon/phone.png"); media.menu[2] = icon_load("../icon/plane.png"); media.menu[3] = icon_load("../icon/wifi.png"); media.menu[4] = icon_load("../icon/settings.png"); media.menu[5] = icon_load("../icon/volume.png"); {int i; for (i = 0; i < 9; ++i) { char buffer[256]; sprintf(buffer, "../images/image%d.png", (i+1)); media.images[i] = icon_load(buffer); }} while (!glfwWindowShouldClose(win)) { /* High DPI displays */ struct nk_vec2 scale; glfwGetWindowSize(win, &width, &height); glfwGetFramebufferSize(win, &display_width, &display_height); scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; /* Input */ {double x, y; nk_input_begin(&ctx); glfwPollEvents(); nk_input_key(&ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(&ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_SHIFT, 1); } else { nk_input_key(&ctx, NK_KEY_COPY, 0); nk_input_key(&ctx, NK_KEY_PASTE, 0); nk_input_key(&ctx, NK_KEY_CUT, 0); nk_input_key(&ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(&ctx, (int)x, (int)y); nk_input_button(&ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_end(&ctx);} /* GUI */ basic_demo(&ctx, &media); button_demo(&ctx, &media); grid_demo(&ctx, &media); /* Draw */ glViewport(0, 0, display_width, display_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(0.3f, 0.3f, 0.3f, 1.0f); device_draw(&device, &ctx, width, height, scale, NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); } glDeleteTextures(1,(const GLuint*)&media.unchecked.handle.id); glDeleteTextures(1,(const GLuint*)&media.checked.handle.id); glDeleteTextures(1,(const GLuint*)&media.rocket.handle.id); glDeleteTextures(1,(const GLuint*)&media.cloud.handle.id); glDeleteTextures(1,(const GLuint*)&media.pen.handle.id); glDeleteTextures(1,(const GLuint*)&media.play.handle.id); glDeleteTextures(1,(const GLuint*)&media.pause.handle.id); glDeleteTextures(1,(const GLuint*)&media.stop.handle.id); glDeleteTextures(1,(const GLuint*)&media.next.handle.id); glDeleteTextures(1,(const GLuint*)&media.prev.handle.id); glDeleteTextures(1,(const GLuint*)&media.tools.handle.id); glDeleteTextures(1,(const GLuint*)&media.dir.handle.id); glDeleteTextures(1,(const GLuint*)&media.del.handle.id); nk_font_atlas_clear(&atlas); nk_free(&ctx); device_shutdown(&device); glfwTerminate(); return 0; } ================================================ FILE: example/file_browser.c ================================================ /* nuklear - v1.05 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #include "../nuklear.h" #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" /* macros */ #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif /* =============================================================== * * GUI * * ===============================================================*/ struct icons { struct nk_image desktop; struct nk_image home; struct nk_image computer; struct nk_image directory; struct nk_image default_file; struct nk_image text_file; struct nk_image music_file; struct nk_image font_file; struct nk_image img_file; struct nk_image movie_file; }; enum file_groups { FILE_GROUP_DEFAULT, FILE_GROUP_TEXT, FILE_GROUP_MUSIC, FILE_GROUP_FONT, FILE_GROUP_IMAGE, FILE_GROUP_MOVIE, FILE_GROUP_MAX }; enum file_types { FILE_DEFAULT, FILE_TEXT, FILE_C_SOURCE, FILE_CPP_SOURCE, FILE_HEADER, FILE_CPP_HEADER, FILE_MP3, FILE_WAV, FILE_OGG, FILE_TTF, FILE_BMP, FILE_PNG, FILE_JPEG, FILE_PCX, FILE_TGA, FILE_GIF, FILE_MAX }; struct file_group { enum file_groups group; const char *name; struct nk_image *icon; }; struct file { enum file_types type; const char *suffix; enum file_groups group; }; struct media { int font; int icon_sheet; struct icons icons; struct file_group group[FILE_GROUP_MAX]; struct file files[FILE_MAX]; }; #define MAX_PATH_LEN 512 struct file_browser { /* path */ char file[MAX_PATH_LEN]; char home[MAX_PATH_LEN]; char desktop[MAX_PATH_LEN]; char directory[MAX_PATH_LEN]; /* directory content */ char **files; char **directories; size_t file_count; size_t dir_count; struct media *media; }; #ifdef __unix__ #include #include #endif #ifndef _WIN32 # include #endif static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static char* file_load(const char* path, size_t* siz) { char *buf; FILE *fd = fopen(path, "rb"); if (!fd) die("Failed to open file: %s\n", path); fseek(fd, 0, SEEK_END); *siz = (size_t)ftell(fd); fseek(fd, 0, SEEK_SET); buf = (char*)calloc(*siz, 1); fread(buf, *siz, 1, fd); fclose(fd); return buf; } static char* str_duplicate(const char *src) { char *ret; size_t len = strlen(src); if (!len) return 0; ret = (char*)malloc(len+1); if (!ret) return 0; memcpy(ret, src, len); ret[len] = '\0'; return ret; } static void dir_free_list(char **list, size_t size) { size_t i; for (i = 0; i < size; ++i) free(list[i]); free(list); } static char** dir_list(const char *dir, int return_subdirs, size_t *count) { size_t n = 0; char buffer[MAX_PATH_LEN]; char **results = NULL; const DIR *none = NULL; size_t capacity = 32; size_t size; DIR *z; assert(dir); assert(count); strncpy(buffer, dir, MAX_PATH_LEN); n = strlen(buffer); if (n > 0 && (buffer[n-1] != '/')) buffer[n++] = '/'; size = 0; z = opendir(dir); if (z != none) { int nonempty = 1; struct dirent *data = readdir(z); nonempty = (data != NULL); if (!nonempty) return NULL; do { DIR *y; char *p; int is_subdir; if (data->d_name[0] == '.') continue; strncpy(buffer + n, data->d_name, MAX_PATH_LEN-n); y = opendir(buffer); is_subdir = (y != NULL); if (y != NULL) closedir(y); if ((return_subdirs && is_subdir) || (!is_subdir && !return_subdirs)){ if (!size) { results = (char**)calloc(sizeof(char*), capacity); } else if (size >= capacity) { void *old = results; capacity = capacity * 2; results = (char**)realloc(results, capacity * sizeof(char*)); assert(results); if (!results) free(old); } p = str_duplicate(data->d_name); results[size++] = p; } } while ((data = readdir(z)) != NULL); } if (z) closedir(z); *count = size; return results; } static struct file_group FILE_GROUP(enum file_groups group, const char *name, struct nk_image *icon) { struct file_group fg; fg.group = group; fg.name = name; fg.icon = icon; return fg; } static struct file FILE_DEF(enum file_types type, const char *suffix, enum file_groups group) { struct file fd; fd.type = type; fd.suffix = suffix; fd.group = group; return fd; } static struct nk_image* media_icon_for_file(struct media *media, const char *file) { int i = 0; const char *s = file; char suffix[4]; int found = 0; memset(suffix, 0, sizeof(suffix)); /* extract suffix .xxx from file */ while (*s++ != '\0') { if (found && i < 3) suffix[i++] = *s; if (*s == '.') { if (found){ found = 0; break; } found = 1; } } /* check for all file definition of all groups for fitting suffix*/ for (i = 0; i < FILE_MAX && found; ++i) { struct file *d = &media->files[i]; { const char *f = d->suffix; s = suffix; while (f && *f && *s && *s == *f) { s++; f++; } /* found correct file definition so */ if (f && *s == '\0' && *f == '\0') return media->group[d->group].icon; } } return &media->icons.default_file; } static void media_init(struct media *media) { /* file groups */ struct icons *icons = &media->icons; media->group[FILE_GROUP_DEFAULT] = FILE_GROUP(FILE_GROUP_DEFAULT,"default",&icons->default_file); media->group[FILE_GROUP_TEXT] = FILE_GROUP(FILE_GROUP_TEXT, "textual", &icons->text_file); media->group[FILE_GROUP_MUSIC] = FILE_GROUP(FILE_GROUP_MUSIC, "music", &icons->music_file); media->group[FILE_GROUP_FONT] = FILE_GROUP(FILE_GROUP_FONT, "font", &icons->font_file); media->group[FILE_GROUP_IMAGE] = FILE_GROUP(FILE_GROUP_IMAGE, "image", &icons->img_file); media->group[FILE_GROUP_MOVIE] = FILE_GROUP(FILE_GROUP_MOVIE, "movie", &icons->movie_file); /* files */ media->files[FILE_DEFAULT] = FILE_DEF(FILE_DEFAULT, NULL, FILE_GROUP_DEFAULT); media->files[FILE_TEXT] = FILE_DEF(FILE_TEXT, "txt", FILE_GROUP_TEXT); media->files[FILE_C_SOURCE] = FILE_DEF(FILE_C_SOURCE, "c", FILE_GROUP_TEXT); media->files[FILE_CPP_SOURCE] = FILE_DEF(FILE_CPP_SOURCE, "cpp", FILE_GROUP_TEXT); media->files[FILE_HEADER] = FILE_DEF(FILE_HEADER, "h", FILE_GROUP_TEXT); media->files[FILE_CPP_HEADER] = FILE_DEF(FILE_HEADER, "hpp", FILE_GROUP_TEXT); media->files[FILE_MP3] = FILE_DEF(FILE_MP3, "mp3", FILE_GROUP_MUSIC); media->files[FILE_WAV] = FILE_DEF(FILE_WAV, "wav", FILE_GROUP_MUSIC); media->files[FILE_OGG] = FILE_DEF(FILE_OGG, "ogg", FILE_GROUP_MUSIC); media->files[FILE_TTF] = FILE_DEF(FILE_TTF, "ttf", FILE_GROUP_FONT); media->files[FILE_BMP] = FILE_DEF(FILE_BMP, "bmp", FILE_GROUP_IMAGE); media->files[FILE_PNG] = FILE_DEF(FILE_PNG, "png", FILE_GROUP_IMAGE); media->files[FILE_JPEG] = FILE_DEF(FILE_JPEG, "jpg", FILE_GROUP_IMAGE); media->files[FILE_PCX] = FILE_DEF(FILE_PCX, "pcx", FILE_GROUP_IMAGE); media->files[FILE_TGA] = FILE_DEF(FILE_TGA, "tga", FILE_GROUP_IMAGE); media->files[FILE_GIF] = FILE_DEF(FILE_GIF, "gif", FILE_GROUP_IMAGE); } static void file_browser_reload_directory_content(struct file_browser *browser, const char *path) { strncpy(browser->directory, path, MAX_PATH_LEN); dir_free_list(browser->files, browser->file_count); dir_free_list(browser->directories, browser->dir_count); browser->files = dir_list(path, 0, &browser->file_count); browser->directories = dir_list(path, 1, &browser->dir_count); } static void file_browser_init(struct file_browser *browser, struct media *media) { memset(browser, 0, sizeof(*browser)); browser->media = media; { /* load files and sub-directory list */ const char *home = getenv("HOME"); #ifdef _WIN32 if (!home) home = getenv("USERPROFILE"); #else if (!home) home = getpwuid(getuid())->pw_dir; { size_t l; strncpy(browser->home, home, MAX_PATH_LEN); l = strlen(browser->home); strcpy(browser->home + l, "/"); strcpy(browser->directory, browser->home); } #endif { size_t l; strcpy(browser->desktop, browser->home); l = strlen(browser->desktop); strcpy(browser->desktop + l, "desktop/"); } browser->files = dir_list(browser->directory, 0, &browser->file_count); browser->directories = dir_list(browser->directory, 1, &browser->dir_count); } } static void file_browser_free(struct file_browser *browser) { if (browser->files) dir_free_list(browser->files, browser->file_count); if (browser->directories) dir_free_list(browser->directories, browser->dir_count); browser->files = NULL; browser->directories = NULL; memset(browser, 0, sizeof(*browser)); } static int file_browser_run(struct file_browser *browser, struct nk_context *ctx) { int ret = 0; struct media *media = browser->media; struct nk_rect total_space; if (nk_begin(ctx, "File Browser", nk_rect(50, 50, 800, 600), NK_WINDOW_BORDER|NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_MOVABLE)) { static float ratio[] = {0.25f, NK_UNDEFINED}; float spacing_x = ctx->style.window.spacing.x; /* output path directory selector in the menubar */ ctx->style.window.spacing.x = 0; nk_menubar_begin(ctx); { char *d = browser->directory; char *begin = d + 1; nk_layout_row_dynamic(ctx, 25, 6); while (*d++) { if (*d == '/') { *d = '\0'; if (nk_button_label(ctx, begin)) { *d++ = '/'; *d = '\0'; file_browser_reload_directory_content(browser, browser->directory); break; } *d = '/'; begin = d + 1; } } } nk_menubar_end(ctx); ctx->style.window.spacing.x = spacing_x; /* window layout */ total_space = nk_window_get_content_region(ctx); nk_layout_row(ctx, NK_DYNAMIC, total_space.h, 2, ratio); nk_group_begin(ctx, "Special", NK_WINDOW_NO_SCROLLBAR); { struct nk_image home = media->icons.home; struct nk_image desktop = media->icons.desktop; struct nk_image computer = media->icons.computer; nk_layout_row_dynamic(ctx, 40, 1); if (nk_button_image_label(ctx, home, "home", NK_TEXT_CENTERED)) file_browser_reload_directory_content(browser, browser->home); if (nk_button_image_label(ctx,desktop,"desktop",NK_TEXT_CENTERED)) file_browser_reload_directory_content(browser, browser->desktop); if (nk_button_image_label(ctx,computer,"computer",NK_TEXT_CENTERED)) file_browser_reload_directory_content(browser, "/"); nk_group_end(ctx); } /* output directory content window */ nk_group_begin(ctx, "Content", 0); { int index = -1; size_t i = 0, j = 0, k = 0; size_t rows = 0, cols = 0; size_t count = browser->dir_count + browser->file_count; cols = 4; rows = count / cols; for (i = 0; i <= rows; i += 1) { {size_t n = j + cols; nk_layout_row_dynamic(ctx, 135, (int)cols); for (; j < count && j < n; ++j) { /* draw one row of icons */ if (j < browser->dir_count) { /* draw and execute directory buttons */ if (nk_button_image(ctx,media->icons.directory)) index = (int)j; } else { /* draw and execute files buttons */ struct nk_image *icon; size_t fileIndex = ((size_t)j - browser->dir_count); icon = media_icon_for_file(media,browser->files[fileIndex]); if (nk_button_image(ctx, *icon)) { strncpy(browser->file, browser->directory, MAX_PATH_LEN); n = strlen(browser->file); strncpy(browser->file + n, browser->files[fileIndex], MAX_PATH_LEN - n); ret = 1; } } }} {size_t n = k + cols; nk_layout_row_dynamic(ctx, 20, (int)cols); for (; k < count && k < n; k++) { /* draw one row of labels */ if (k < browser->dir_count) { nk_label(ctx, browser->directories[k], NK_TEXT_CENTERED); } else { size_t t = k-browser->dir_count; nk_label(ctx,browser->files[t],NK_TEXT_CENTERED); } }} } if (index != -1) { size_t n = strlen(browser->directory); strncpy(browser->directory + n, browser->directories[index], MAX_PATH_LEN - n); n = strlen(browser->directory); if (n < MAX_PATH_LEN - 1) { browser->directory[n] = '/'; browser->directory[n+1] = '\0'; } file_browser_reload_directory_content(browser, browser->directory); } nk_group_end(ctx); } } nk_end(ctx); return ret; } /* =============================================================== * * DEVICE * * ===============================================================*/ struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; static struct nk_image icon_load(const char *filename) { int x,y,n; GLuint tex; unsigned char *data = stbi_load(filename, &x, &y, &n, 0); if (!data) die("[SDL]: failed to load image: %s", filename); glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); glGenerateMipmap(GL_TEXTURE_2D); stbi_image_free(data); return nk_image_id((int)tex); } static void device_init(struct device *dev) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } static void device_upload_atlas(struct device *dev, const void *image, int width, int height) { glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } static void device_shutdown(struct device *dev) { glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } static void device_draw(struct device *dev, struct nk_context *ctx, int width, int height, struct nk_vec2 scale, enum nk_anti_aliasing AA) { GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, MAX_VERTEX_MEMORY, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_ELEMENT_MEMORY, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ {struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, MAX_VERTEX_MEMORY); nk_buffer_init_fixed(&ebuf, elements, MAX_ELEMENT_MEMORY); nk_convert(ctx, &dev->cmds, &vbuf, &ebuf, &config);} } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } /* glfw callbacks (I don't know if there is a easier way to access text and scroll )*/ static void error_callback(int e, const char *d){printf("Error %d: %s\n", e, d);} static void text_input(GLFWwindow *win, unsigned int codepoint) {nk_input_unicode((struct nk_context*)glfwGetWindowUserPointer(win), codepoint);} static void scroll_input(GLFWwindow *win, double _, double yoff) {UNUSED(_);nk_input_scroll((struct nk_context*)glfwGetWindowUserPointer(win), nk_vec2(0, (float)yoff));} int main(int argc, char *argv[]) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; int display_width = 0, display_height = 0; /* GUI */ struct device device; struct nk_context ctx; struct nk_font *font; struct nk_font_atlas atlas; struct file_browser browser; struct media media; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); #ifdef __APPLE__ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); #endif win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwSetWindowUserPointer(win, &ctx); glfwSetCharCallback(win, text_input); glfwSetScrollCallback(win, scroll_input); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } {/* GUI */ device_init(&device); {const void *image; int w, h; const char *font_path = (argc > 1) ? argv[1]: 0; nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); if (font_path) font = nk_font_atlas_add_from_file(&atlas, font_path, 13.0f, NULL); else font = nk_font_atlas_add_default(&atlas, 13.0f, NULL); image = nk_font_atlas_bake(&atlas, &w, &h, NK_FONT_ATLAS_RGBA32); device_upload_atlas(&device, image, w, h); nk_font_atlas_end(&atlas, nk_handle_id((int)device.font_tex), &device.null);} nk_init_default(&ctx, &font->handle);} /* icons */ glEnable(GL_TEXTURE_2D); media.icons.home = icon_load("../icon/home.png"); media.icons.directory = icon_load("../icon/directory.png"); media.icons.computer = icon_load("../icon/computer.png"); media.icons.desktop = icon_load("../icon/desktop.png"); media.icons.default_file = icon_load("../icon/default.png"); media.icons.text_file = icon_load("../icon/text.png"); media.icons.music_file = icon_load("../icon/music.png"); media.icons.font_file = icon_load("../icon/font.png"); media.icons.img_file = icon_load("../icon/img.png"); media.icons.movie_file = icon_load("../icon/movie.png"); media_init(&media); file_browser_init(&browser, &media); while (!glfwWindowShouldClose(win)) { /* High DPI displays */ struct nk_vec2 scale; glfwGetWindowSize(win, &width, &height); glfwGetFramebufferSize(win, &display_width, &display_height); scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; /* Input */ {double x, y; nk_input_begin(&ctx); glfwPollEvents(); nk_input_key(&ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(&ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_SHIFT, 1); } else { nk_input_key(&ctx, NK_KEY_COPY, 0); nk_input_key(&ctx, NK_KEY_PASTE, 0); nk_input_key(&ctx, NK_KEY_CUT, 0); nk_input_key(&ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(&ctx, (int)x, (int)y); nk_input_button(&ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_end(&ctx);} /* GUI */ file_browser_run(&browser, &ctx); /* Draw */ glViewport(0, 0, display_width, display_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(0.2f, 0.2f, 0.2f, 1.0f); device_draw(&device, &ctx, width, height, scale, NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); } glDeleteTextures(1,(const GLuint*)&media.icons.home.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.directory.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.computer.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.desktop.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.default_file.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.text_file.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.music_file.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.font_file.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.img_file.handle.id); glDeleteTextures(1,(const GLuint*)&media.icons.movie_file.handle.id); file_browser_free(&browser); nk_font_atlas_clear(&atlas); nk_free(&ctx); device_shutdown(&device); glfwTerminate(); return 0; } ================================================ FILE: example/skinning.c ================================================ /* nuklear - v1.05 - public domain */ #include #include #include #include #include #include #include #include #include #include #include #include #define NK_INCLUDE_FIXED_TYPES #define NK_INCLUDE_STANDARD_IO #define NK_INCLUDE_DEFAULT_ALLOCATOR #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_IMPLEMENTATION #include "../nuklear.h" #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" /* macros */ #define WINDOW_WIDTH 1200 #define WINDOW_HEIGHT 800 #define MAX_VERTEX_MEMORY 512 * 1024 #define MAX_ELEMENT_MEMORY 128 * 1024 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) #ifdef __APPLE__ #define NK_SHADER_VERSION "#version 150\n" #else #define NK_SHADER_VERSION "#version 300 es\n" #endif struct media { GLint skin; struct nk_image menu; struct nk_image check; struct nk_image check_cursor; struct nk_image option; struct nk_image option_cursor; struct nk_image header; struct nk_image window; struct nk_image scrollbar_inc_button; struct nk_image scrollbar_inc_button_hover; struct nk_image scrollbar_dec_button; struct nk_image scrollbar_dec_button_hover; struct nk_image button; struct nk_image button_hover; struct nk_image button_active; struct nk_image tab_minimize; struct nk_image tab_maximize; struct nk_image slider; struct nk_image slider_hover; struct nk_image slider_active; }; /* =============================================================== * * DEVICE * * ===============================================================*/ struct nk_glfw_vertex { float position[2]; float uv[2]; nk_byte col[4]; }; struct device { struct nk_buffer cmds; struct nk_draw_null_texture null; GLuint vbo, vao, ebo; GLuint prog; GLuint vert_shdr; GLuint frag_shdr; GLint attrib_pos; GLint attrib_uv; GLint attrib_col; GLint uniform_tex; GLint uniform_proj; GLuint font_tex; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } static GLuint image_load(const char *filename) { int x,y,n; GLuint tex; unsigned char *data = stbi_load(filename, &x, &y, &n, 0); if (!data) die("failed to load image: %s", filename); glGenTextures(1, &tex); glBindTexture(GL_TEXTURE_2D, tex); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); glGenerateMipmap(GL_TEXTURE_2D); stbi_image_free(data); return tex; } static void device_init(struct device *dev) { GLint status; static const GLchar *vertex_shader = NK_SHADER_VERSION "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 TexCoord;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main() {\n" " Frag_UV = TexCoord;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy, 0, 1);\n" "}\n"; static const GLchar *fragment_shader = NK_SHADER_VERSION "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main(){\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; nk_buffer_init_default(&dev->cmds); dev->prog = glCreateProgram(); dev->vert_shdr = glCreateShader(GL_VERTEX_SHADER); dev->frag_shdr = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(dev->vert_shdr, 1, &vertex_shader, 0); glShaderSource(dev->frag_shdr, 1, &fragment_shader, 0); glCompileShader(dev->vert_shdr); glCompileShader(dev->frag_shdr); glGetShaderiv(dev->vert_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glGetShaderiv(dev->frag_shdr, GL_COMPILE_STATUS, &status); assert(status == GL_TRUE); glAttachShader(dev->prog, dev->vert_shdr); glAttachShader(dev->prog, dev->frag_shdr); glLinkProgram(dev->prog); glGetProgramiv(dev->prog, GL_LINK_STATUS, &status); assert(status == GL_TRUE); dev->uniform_tex = glGetUniformLocation(dev->prog, "Texture"); dev->uniform_proj = glGetUniformLocation(dev->prog, "ProjMtx"); dev->attrib_pos = glGetAttribLocation(dev->prog, "Position"); dev->attrib_uv = glGetAttribLocation(dev->prog, "TexCoord"); dev->attrib_col = glGetAttribLocation(dev->prog, "Color"); { /* buffer setup */ GLsizei vs = sizeof(struct nk_glfw_vertex); size_t vp = offsetof(struct nk_glfw_vertex, position); size_t vt = offsetof(struct nk_glfw_vertex, uv); size_t vc = offsetof(struct nk_glfw_vertex, col); glGenBuffers(1, &dev->vbo); glGenBuffers(1, &dev->ebo); glGenVertexArrays(1, &dev->vao); glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glEnableVertexAttribArray((GLuint)dev->attrib_pos); glEnableVertexAttribArray((GLuint)dev->attrib_uv); glEnableVertexAttribArray((GLuint)dev->attrib_col); glVertexAttribPointer((GLuint)dev->attrib_pos, 2, GL_FLOAT, GL_FALSE, vs, (void*)vp); glVertexAttribPointer((GLuint)dev->attrib_uv, 2, GL_FLOAT, GL_FALSE, vs, (void*)vt); glVertexAttribPointer((GLuint)dev->attrib_col, 4, GL_UNSIGNED_BYTE, GL_TRUE, vs, (void*)vc); } glBindTexture(GL_TEXTURE_2D, 0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); } static void device_upload_atlas(struct device *dev, const void *image, int width, int height) { glGenTextures(1, &dev->font_tex); glBindTexture(GL_TEXTURE_2D, dev->font_tex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image); } static void device_shutdown(struct device *dev) { glDetachShader(dev->prog, dev->vert_shdr); glDetachShader(dev->prog, dev->frag_shdr); glDeleteShader(dev->vert_shdr); glDeleteShader(dev->frag_shdr); glDeleteProgram(dev->prog); glDeleteTextures(1, &dev->font_tex); glDeleteBuffers(1, &dev->vbo); glDeleteBuffers(1, &dev->ebo); nk_buffer_free(&dev->cmds); } static void device_draw(struct device *dev, struct nk_context *ctx, int width, int height, struct nk_vec2 scale, enum nk_anti_aliasing AA) { GLfloat ortho[4][4] = { {2.0f, 0.0f, 0.0f, 0.0f}, {0.0f,-2.0f, 0.0f, 0.0f}, {0.0f, 0.0f,-1.0f, 0.0f}, {-1.0f,1.0f, 0.0f, 1.0f}, }; ortho[0][0] /= (GLfloat)width; ortho[1][1] /= (GLfloat)height; /* setup global state */ glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); glActiveTexture(GL_TEXTURE0); /* setup program */ glUseProgram(dev->prog); glUniform1i(dev->uniform_tex, 0); glUniformMatrix4fv(dev->uniform_proj, 1, GL_FALSE, &ortho[0][0]); { /* convert from command queue into draw list and draw to screen */ const struct nk_draw_command *cmd; void *vertices, *elements; const nk_draw_index *offset = NULL; /* allocate vertex and element buffer */ glBindVertexArray(dev->vao); glBindBuffer(GL_ARRAY_BUFFER, dev->vbo); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, dev->ebo); glBufferData(GL_ARRAY_BUFFER, MAX_VERTEX_MEMORY, NULL, GL_STREAM_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_ELEMENT_MEMORY, NULL, GL_STREAM_DRAW); /* load draw vertices & elements directly into vertex + element buffer */ vertices = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); elements = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY); { /* fill convert configuration */ struct nk_convert_config config; static const struct nk_draw_vertex_layout_element vertex_layout[] = { {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)}, {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)}, {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)}, {NK_VERTEX_LAYOUT_END} }; NK_MEMSET(&config, 0, sizeof(config)); config.vertex_layout = vertex_layout; config.vertex_size = sizeof(struct nk_glfw_vertex); config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex); config.null = dev->null; config.circle_segment_count = 22; config.curve_segment_count = 22; config.arc_segment_count = 22; config.global_alpha = 1.0f; config.shape_AA = AA; config.line_AA = AA; /* setup buffers to load vertices and elements */ {struct nk_buffer vbuf, ebuf; nk_buffer_init_fixed(&vbuf, vertices, MAX_VERTEX_MEMORY); nk_buffer_init_fixed(&ebuf, elements, MAX_ELEMENT_MEMORY); nk_convert(ctx, &dev->cmds, &vbuf, &ebuf, &config);} } glUnmapBuffer(GL_ARRAY_BUFFER); glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER); /* iterate over and execute each draw command */ nk_draw_foreach(cmd, ctx, &dev->cmds) { if (!cmd->elem_count) continue; glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); glScissor( (GLint)(cmd->clip_rect.x * scale.x), (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * scale.y), (GLint)(cmd->clip_rect.w * scale.x), (GLint)(cmd->clip_rect.h * scale.y)); glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); offset += cmd->elem_count; } nk_clear(ctx); } /* default OpenGL state */ glUseProgram(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindVertexArray(0); glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } /* glfw callbacks (I don't know if there is a easier way to access text and scroll )*/ static void error_callback(int e, const char *d){printf("Error %d: %s\n", e, d);} static void text_input(GLFWwindow *win, unsigned int codepoint) {nk_input_unicode((struct nk_context*)glfwGetWindowUserPointer(win), codepoint);} static void scroll_input(GLFWwindow *win, double _, double yoff) {UNUSED(_);nk_input_scroll((struct nk_context*)glfwGetWindowUserPointer(win), nk_vec2(0, (float)yoff));} int main(int argc, char *argv[]) { /* Platform */ static GLFWwindow *win; int width = 0, height = 0; int display_width=0, display_height=0; /* GUI */ struct device device; struct nk_font_atlas atlas; struct media media; struct nk_context ctx; struct nk_font *font; /* GLFW */ glfwSetErrorCallback(error_callback); if (!glfwInit()) { fprintf(stdout, "[GFLW] failed to init!\n"); exit(1); } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); #ifdef __APPLE__ glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); #endif win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL); glfwMakeContextCurrent(win); glfwSetWindowUserPointer(win, &ctx); glfwSetCharCallback(win, text_input); glfwSetScrollCallback(win, scroll_input); glfwGetWindowSize(win, &width, &height); glfwGetFramebufferSize(win, &display_width, &display_height); /* OpenGL */ glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); glewExperimental = 1; if (glewInit() != GLEW_OK) { fprintf(stderr, "Failed to setup GLEW\n"); exit(1); } /* GUI */ {device_init(&device); {const void *image; int w, h; const char *font_path = (argc > 1) ? argv[1]: 0; nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); if (font_path) font = nk_font_atlas_add_from_file(&atlas, font_path, 13.0f, NULL); else font = nk_font_atlas_add_default(&atlas, 13.0f, NULL); image = nk_font_atlas_bake(&atlas, &w, &h, NK_FONT_ATLAS_RGBA32); device_upload_atlas(&device, image, w, h); nk_font_atlas_end(&atlas, nk_handle_id((int)device.font_tex), &device.null);} nk_init_default(&ctx, &font->handle);} { /* skin */ glEnable(GL_TEXTURE_2D); media.skin = image_load("../skins/gwen.png"); media.check = nk_subimage_id(media.skin, 512,512, nk_rect(464,32,15,15)); media.check_cursor = nk_subimage_id(media.skin, 512,512, nk_rect(450,34,11,11)); media.option = nk_subimage_id(media.skin, 512,512, nk_rect(464,64,15,15)); media.option_cursor = nk_subimage_id(media.skin, 512,512, nk_rect(451,67,9,9)); media.header = nk_subimage_id(media.skin, 512,512, nk_rect(128,0,127,24)); media.window = nk_subimage_id(media.skin, 512,512, nk_rect(128,23,127,104)); media.scrollbar_inc_button = nk_subimage_id(media.skin, 512,512, nk_rect(464,256,15,15)); media.scrollbar_inc_button_hover = nk_subimage_id(media.skin, 512,512, nk_rect(464,320,15,15)); media.scrollbar_dec_button = nk_subimage_id(media.skin, 512,512, nk_rect(464,224,15,15)); media.scrollbar_dec_button_hover = nk_subimage_id(media.skin, 512,512, nk_rect(464,288,15,15)); media.button = nk_subimage_id(media.skin, 512,512, nk_rect(384,336,127,31)); media.button_hover = nk_subimage_id(media.skin, 512,512, nk_rect(384,368,127,31)); media.button_active = nk_subimage_id(media.skin, 512,512, nk_rect(384,400,127,31)); media.tab_minimize = nk_subimage_id(media.skin, 512,512, nk_rect(451, 99, 9, 9)); media.tab_maximize = nk_subimage_id(media.skin, 512,512, nk_rect(467,99,9,9)); media.slider = nk_subimage_id(media.skin, 512,512, nk_rect(418,33,11,14)); media.slider_hover = nk_subimage_id(media.skin, 512,512, nk_rect(418,49,11,14)); media.slider_active = nk_subimage_id(media.skin, 512,512, nk_rect(418,64,11,14)); /* window */ ctx.style.window.background = nk_rgb(204,204,204); ctx.style.window.fixed_background = nk_style_item_image(media.window); ctx.style.window.border_color = nk_rgb(67,67,67); ctx.style.window.combo_border_color = nk_rgb(67,67,67); ctx.style.window.contextual_border_color = nk_rgb(67,67,67); ctx.style.window.menu_border_color = nk_rgb(67,67,67); ctx.style.window.group_border_color = nk_rgb(67,67,67); ctx.style.window.tooltip_border_color = nk_rgb(67,67,67); ctx.style.window.scrollbar_size = nk_vec2(16,16); ctx.style.window.border_color = nk_rgba(0,0,0,0); ctx.style.window.padding = nk_vec2(8,4); ctx.style.window.border = 3; /* window header */ ctx.style.window.header.normal = nk_style_item_image(media.header); ctx.style.window.header.hover = nk_style_item_image(media.header); ctx.style.window.header.active = nk_style_item_image(media.header); ctx.style.window.header.label_normal = nk_rgb(95,95,95); ctx.style.window.header.label_hover = nk_rgb(95,95,95); ctx.style.window.header.label_active = nk_rgb(95,95,95); /* scrollbar */ ctx.style.scrollv.normal = nk_style_item_color(nk_rgb(184,184,184)); ctx.style.scrollv.hover = nk_style_item_color(nk_rgb(184,184,184)); ctx.style.scrollv.active = nk_style_item_color(nk_rgb(184,184,184)); ctx.style.scrollv.cursor_normal = nk_style_item_color(nk_rgb(220,220,220)); ctx.style.scrollv.cursor_hover = nk_style_item_color(nk_rgb(235,235,235)); ctx.style.scrollv.cursor_active = nk_style_item_color(nk_rgb(99,202,255)); ctx.style.scrollv.dec_symbol = NK_SYMBOL_NONE; ctx.style.scrollv.inc_symbol = NK_SYMBOL_NONE; ctx.style.scrollv.show_buttons = nk_true; ctx.style.scrollv.border_color = nk_rgb(81,81,81); ctx.style.scrollv.cursor_border_color = nk_rgb(81,81,81); ctx.style.scrollv.border = 1; ctx.style.scrollv.rounding = 0; ctx.style.scrollv.border_cursor = 1; ctx.style.scrollv.rounding_cursor = 2; /* scrollbar buttons */ ctx.style.scrollv.inc_button.normal = nk_style_item_image(media.scrollbar_inc_button); ctx.style.scrollv.inc_button.hover = nk_style_item_image(media.scrollbar_inc_button_hover); ctx.style.scrollv.inc_button.active = nk_style_item_image(media.scrollbar_inc_button_hover); ctx.style.scrollv.inc_button.border_color = nk_rgba(0,0,0,0); ctx.style.scrollv.inc_button.text_background = nk_rgba(0,0,0,0); ctx.style.scrollv.inc_button.text_normal = nk_rgba(0,0,0,0); ctx.style.scrollv.inc_button.text_hover = nk_rgba(0,0,0,0); ctx.style.scrollv.inc_button.text_active = nk_rgba(0,0,0,0); ctx.style.scrollv.inc_button.border = 0.0f; ctx.style.scrollv.dec_button.normal = nk_style_item_image(media.scrollbar_dec_button); ctx.style.scrollv.dec_button.hover = nk_style_item_image(media.scrollbar_dec_button_hover); ctx.style.scrollv.dec_button.active = nk_style_item_image(media.scrollbar_dec_button_hover); ctx.style.scrollv.dec_button.border_color = nk_rgba(0,0,0,0); ctx.style.scrollv.dec_button.text_background = nk_rgba(0,0,0,0); ctx.style.scrollv.dec_button.text_normal = nk_rgba(0,0,0,0); ctx.style.scrollv.dec_button.text_hover = nk_rgba(0,0,0,0); ctx.style.scrollv.dec_button.text_active = nk_rgba(0,0,0,0); ctx.style.scrollv.dec_button.border = 0.0f; /* checkbox toggle */ {struct nk_style_toggle *toggle; toggle = &ctx.style.checkbox; toggle->normal = nk_style_item_image(media.check); toggle->hover = nk_style_item_image(media.check); toggle->active = nk_style_item_image(media.check); toggle->cursor_normal = nk_style_item_image(media.check_cursor); toggle->cursor_hover = nk_style_item_image(media.check_cursor); toggle->text_normal = nk_rgb(95,95,95); toggle->text_hover = nk_rgb(95,95,95); toggle->text_active = nk_rgb(95,95,95);} /* option toggle */ {struct nk_style_toggle *toggle; toggle = &ctx.style.option; toggle->normal = nk_style_item_image(media.option); toggle->hover = nk_style_item_image(media.option); toggle->active = nk_style_item_image(media.option); toggle->cursor_normal = nk_style_item_image(media.option_cursor); toggle->cursor_hover = nk_style_item_image(media.option_cursor); toggle->text_normal = nk_rgb(95,95,95); toggle->text_hover = nk_rgb(95,95,95); toggle->text_active = nk_rgb(95,95,95);} /* default button */ ctx.style.button.normal = nk_style_item_image(media.button); ctx.style.button.hover = nk_style_item_image(media.button_hover); ctx.style.button.active = nk_style_item_image(media.button_active); ctx.style.button.border_color = nk_rgba(0,0,0,0); ctx.style.button.text_background = nk_rgba(0,0,0,0); ctx.style.button.text_normal = nk_rgb(95,95,95); ctx.style.button.text_hover = nk_rgb(95,95,95); ctx.style.button.text_active = nk_rgb(95,95,95); /* default text */ ctx.style.text.color = nk_rgb(95,95,95); /* contextual button */ ctx.style.contextual_button.normal = nk_style_item_color(nk_rgb(206,206,206)); ctx.style.contextual_button.hover = nk_style_item_color(nk_rgb(229,229,229)); ctx.style.contextual_button.active = nk_style_item_color(nk_rgb(99,202,255)); ctx.style.contextual_button.border_color = nk_rgba(0,0,0,0); ctx.style.contextual_button.text_background = nk_rgba(0,0,0,0); ctx.style.contextual_button.text_normal = nk_rgb(95,95,95); ctx.style.contextual_button.text_hover = nk_rgb(95,95,95); ctx.style.contextual_button.text_active = nk_rgb(95,95,95); /* menu button */ ctx.style.menu_button.normal = nk_style_item_color(nk_rgb(206,206,206)); ctx.style.menu_button.hover = nk_style_item_color(nk_rgb(229,229,229)); ctx.style.menu_button.active = nk_style_item_color(nk_rgb(99,202,255)); ctx.style.menu_button.border_color = nk_rgba(0,0,0,0); ctx.style.menu_button.text_background = nk_rgba(0,0,0,0); ctx.style.menu_button.text_normal = nk_rgb(95,95,95); ctx.style.menu_button.text_hover = nk_rgb(95,95,95); ctx.style.menu_button.text_active = nk_rgb(95,95,95); /* tree */ ctx.style.tab.text = nk_rgb(95,95,95); ctx.style.tab.tab_minimize_button.normal = nk_style_item_image(media.tab_minimize); ctx.style.tab.tab_minimize_button.hover = nk_style_item_image(media.tab_minimize); ctx.style.tab.tab_minimize_button.active = nk_style_item_image(media.tab_minimize); ctx.style.tab.tab_minimize_button.text_background = nk_rgba(0,0,0,0); ctx.style.tab.tab_minimize_button.text_normal = nk_rgba(0,0,0,0); ctx.style.tab.tab_minimize_button.text_hover = nk_rgba(0,0,0,0); ctx.style.tab.tab_minimize_button.text_active = nk_rgba(0,0,0,0); ctx.style.tab.tab_maximize_button.normal = nk_style_item_image(media.tab_maximize); ctx.style.tab.tab_maximize_button.hover = nk_style_item_image(media.tab_maximize); ctx.style.tab.tab_maximize_button.active = nk_style_item_image(media.tab_maximize); ctx.style.tab.tab_maximize_button.text_background = nk_rgba(0,0,0,0); ctx.style.tab.tab_maximize_button.text_normal = nk_rgba(0,0,0,0); ctx.style.tab.tab_maximize_button.text_hover = nk_rgba(0,0,0,0); ctx.style.tab.tab_maximize_button.text_active = nk_rgba(0,0,0,0); ctx.style.tab.node_minimize_button.normal = nk_style_item_image(media.tab_minimize); ctx.style.tab.node_minimize_button.hover = nk_style_item_image(media.tab_minimize); ctx.style.tab.node_minimize_button.active = nk_style_item_image(media.tab_minimize); ctx.style.tab.node_minimize_button.text_background = nk_rgba(0,0,0,0); ctx.style.tab.node_minimize_button.text_normal = nk_rgba(0,0,0,0); ctx.style.tab.node_minimize_button.text_hover = nk_rgba(0,0,0,0); ctx.style.tab.node_minimize_button.text_active = nk_rgba(0,0,0,0); ctx.style.tab.node_maximize_button.normal = nk_style_item_image(media.tab_maximize); ctx.style.tab.node_maximize_button.hover = nk_style_item_image(media.tab_maximize); ctx.style.tab.node_maximize_button.active = nk_style_item_image(media.tab_maximize); ctx.style.tab.node_maximize_button.text_background = nk_rgba(0,0,0,0); ctx.style.tab.node_maximize_button.text_normal = nk_rgba(0,0,0,0); ctx.style.tab.node_maximize_button.text_hover = nk_rgba(0,0,0,0); ctx.style.tab.node_maximize_button.text_active = nk_rgba(0,0,0,0); /* selectable */ ctx.style.selectable.normal = nk_style_item_color(nk_rgb(206,206,206)); ctx.style.selectable.hover = nk_style_item_color(nk_rgb(206,206,206)); ctx.style.selectable.pressed = nk_style_item_color(nk_rgb(206,206,206)); ctx.style.selectable.normal_active = nk_style_item_color(nk_rgb(185,205,248)); ctx.style.selectable.hover_active = nk_style_item_color(nk_rgb(185,205,248)); ctx.style.selectable.pressed_active = nk_style_item_color(nk_rgb(185,205,248)); ctx.style.selectable.text_normal = nk_rgb(95,95,95); ctx.style.selectable.text_hover = nk_rgb(95,95,95); ctx.style.selectable.text_pressed = nk_rgb(95,95,95); ctx.style.selectable.text_normal_active = nk_rgb(95,95,95); ctx.style.selectable.text_hover_active = nk_rgb(95,95,95); ctx.style.selectable.text_pressed_active = nk_rgb(95,95,95); /* slider */ ctx.style.slider.normal = nk_style_item_hide(); ctx.style.slider.hover = nk_style_item_hide(); ctx.style.slider.active = nk_style_item_hide(); ctx.style.slider.bar_normal = nk_rgb(156,156,156); ctx.style.slider.bar_hover = nk_rgb(156,156,156); ctx.style.slider.bar_active = nk_rgb(156,156,156); ctx.style.slider.bar_filled = nk_rgb(156,156,156); ctx.style.slider.cursor_normal = nk_style_item_image(media.slider); ctx.style.slider.cursor_hover = nk_style_item_image(media.slider_hover); ctx.style.slider.cursor_active = nk_style_item_image(media.slider_active); ctx.style.slider.cursor_size = nk_vec2(16.5f,21); ctx.style.slider.bar_height = 1; /* progressbar */ ctx.style.progress.normal = nk_style_item_color(nk_rgb(231,231,231)); ctx.style.progress.hover = nk_style_item_color(nk_rgb(231,231,231)); ctx.style.progress.active = nk_style_item_color(nk_rgb(231,231,231)); ctx.style.progress.cursor_normal = nk_style_item_color(nk_rgb(63,242,93)); ctx.style.progress.cursor_hover = nk_style_item_color(nk_rgb(63,242,93)); ctx.style.progress.cursor_active = nk_style_item_color(nk_rgb(63,242,93)); ctx.style.progress.border_color = nk_rgb(114,116,115); ctx.style.progress.padding = nk_vec2(0,0); ctx.style.progress.border = 2; ctx.style.progress.rounding = 1; /* combo */ ctx.style.combo.normal = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.hover = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.active = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.border_color = nk_rgb(95,95,95); ctx.style.combo.label_normal = nk_rgb(95,95,95); ctx.style.combo.label_hover = nk_rgb(95,95,95); ctx.style.combo.label_active = nk_rgb(95,95,95); ctx.style.combo.border = 1; ctx.style.combo.rounding = 1; /* combo button */ ctx.style.combo.button.normal = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.button.hover = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.button.active = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.combo.button.text_background = nk_rgb(216,216,216); ctx.style.combo.button.text_normal = nk_rgb(95,95,95); ctx.style.combo.button.text_hover = nk_rgb(95,95,95); ctx.style.combo.button.text_active = nk_rgb(95,95,95); /* property */ ctx.style.property.normal = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.hover = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.active = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.border_color = nk_rgb(81,81,81); ctx.style.property.label_normal = nk_rgb(95,95,95); ctx.style.property.label_hover = nk_rgb(95,95,95); ctx.style.property.label_active = nk_rgb(95,95,95); ctx.style.property.sym_left = NK_SYMBOL_TRIANGLE_LEFT; ctx.style.property.sym_right = NK_SYMBOL_TRIANGLE_RIGHT; ctx.style.property.rounding = 10; ctx.style.property.border = 1; /* edit */ ctx.style.edit.normal = nk_style_item_color(nk_rgb(240,240,240)); ctx.style.edit.hover = nk_style_item_color(nk_rgb(240,240,240)); ctx.style.edit.active = nk_style_item_color(nk_rgb(240,240,240)); ctx.style.edit.border_color = nk_rgb(62,62,62); ctx.style.edit.cursor_normal = nk_rgb(99,202,255); ctx.style.edit.cursor_hover = nk_rgb(99,202,255); ctx.style.edit.cursor_text_normal = nk_rgb(95,95,95); ctx.style.edit.cursor_text_hover = nk_rgb(95,95,95); ctx.style.edit.text_normal = nk_rgb(95,95,95); ctx.style.edit.text_hover = nk_rgb(95,95,95); ctx.style.edit.text_active = nk_rgb(95,95,95); ctx.style.edit.selected_normal = nk_rgb(99,202,255); ctx.style.edit.selected_hover = nk_rgb(99,202,255); ctx.style.edit.selected_text_normal = nk_rgb(95,95,95); ctx.style.edit.selected_text_hover = nk_rgb(95,95,95); ctx.style.edit.border = 1; ctx.style.edit.rounding = 2; /* property buttons */ ctx.style.property.dec_button.normal = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.dec_button.hover = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.dec_button.active = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.dec_button.text_background = nk_rgba(0,0,0,0); ctx.style.property.dec_button.text_normal = nk_rgb(95,95,95); ctx.style.property.dec_button.text_hover = nk_rgb(95,95,95); ctx.style.property.dec_button.text_active = nk_rgb(95,95,95); ctx.style.property.inc_button = ctx.style.property.dec_button; /* property edit */ ctx.style.property.edit.normal = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.edit.hover = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.edit.active = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.property.edit.border_color = nk_rgba(0,0,0,0); ctx.style.property.edit.cursor_normal = nk_rgb(95,95,95); ctx.style.property.edit.cursor_hover = nk_rgb(95,95,95); ctx.style.property.edit.cursor_text_normal = nk_rgb(216,216,216); ctx.style.property.edit.cursor_text_hover = nk_rgb(216,216,216); ctx.style.property.edit.text_normal = nk_rgb(95,95,95); ctx.style.property.edit.text_hover = nk_rgb(95,95,95); ctx.style.property.edit.text_active = nk_rgb(95,95,95); ctx.style.property.edit.selected_normal = nk_rgb(95,95,95); ctx.style.property.edit.selected_hover = nk_rgb(95,95,95); ctx.style.property.edit.selected_text_normal = nk_rgb(216,216,216); ctx.style.property.edit.selected_text_hover = nk_rgb(216,216,216); /* chart */ ctx.style.chart.background = nk_style_item_color(nk_rgb(216,216,216)); ctx.style.chart.border_color = nk_rgb(81,81,81); ctx.style.chart.color = nk_rgb(95,95,95); ctx.style.chart.selected_color = nk_rgb(255,0,0); ctx.style.chart.border = 1; } while (!glfwWindowShouldClose(win)) { /* High DPI displays */ struct nk_vec2 scale; glfwGetWindowSize(win, &width, &height); glfwGetFramebufferSize(win, &display_width, &display_height); scale.x = (float)display_width/(float)width; scale.y = (float)display_height/(float)height; /* Input */ {double x, y; nk_input_begin(&ctx); glfwPollEvents(); nk_input_key(&ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS); if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS || glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) { nk_input_key(&ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_P) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS); nk_input_key(&ctx, NK_KEY_SHIFT, 1); } else { nk_input_key(&ctx, NK_KEY_COPY, 0); nk_input_key(&ctx, NK_KEY_PASTE, 0); nk_input_key(&ctx, NK_KEY_CUT, 0); nk_input_key(&ctx, NK_KEY_SHIFT, 0); } glfwGetCursorPos(win, &x, &y); nk_input_motion(&ctx, (int)x, (int)y); nk_input_button(&ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS); nk_input_button(&ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS); nk_input_end(&ctx);} /* GUI */ {struct nk_panel layout, tab; if (nk_begin(&ctx, "Demo", nk_rect(50, 50, 300, 400), NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_TITLE)) { int i; float id; static int slider = 10; static int field_len; static nk_size prog_value = 60; static int current_weapon = 0; static char field_buffer[64]; static float pos; static const char *weapons[] = {"Fist","Pistol","Shotgun","Plasma","BFG"}; const float step = (2*3.141592654f) / 32; nk_layout_row_static(&ctx, 30, 120, 1); if (nk_button_label(&ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(&ctx, 20, 1); nk_label(&ctx, "Label", NK_TEXT_LEFT); nk_layout_row_dynamic(&ctx, 30, 2); nk_check_label(&ctx, "inactive", 0); nk_check_label(&ctx, "active", 1); nk_option_label(&ctx, "active", 1); nk_option_label(&ctx, "inactive", 0); nk_layout_row_dynamic(&ctx, 30, 1); nk_slider_int(&ctx, 0, &slider, 16, 1); nk_layout_row_dynamic(&ctx, 20, 1); nk_progress(&ctx, &prog_value, 100, NK_MODIFIABLE); nk_layout_row_dynamic(&ctx, 25, 1); nk_edit_string(&ctx, NK_EDIT_FIELD, field_buffer, &field_len, 64, nk_filter_default); nk_property_float(&ctx, "#X:", -1024.0f, &pos, 1024.0f, 1, 1); current_weapon = nk_combo(&ctx, weapons, LEN(weapons), current_weapon, 25, nk_vec2(nk_widget_width(&ctx),200)); nk_layout_row_dynamic(&ctx, 100, 1); if (nk_chart_begin_colored(&ctx, NK_CHART_LINES, nk_rgb(255,0,0), nk_rgb(150,0,0), 32, 0.0f, 1.0f)) { nk_chart_add_slot_colored(&ctx, NK_CHART_LINES, nk_rgb(0,0,255), nk_rgb(0,0,150),32, -1.0f, 1.0f); nk_chart_add_slot_colored(&ctx, NK_CHART_LINES, nk_rgb(0,255,0), nk_rgb(0,150,0), 32, -1.0f, 1.0f); for (id = 0, i = 0; i < 32; ++i) { nk_chart_push_slot(&ctx, (float)fabs(sin(id)), 0); nk_chart_push_slot(&ctx, (float)cos(id), 1); nk_chart_push_slot(&ctx, (float)sin(id), 2); id += step; } } nk_chart_end(&ctx); nk_layout_row_dynamic(&ctx, 250, 1); if (nk_group_begin(&ctx, "Standard", NK_WINDOW_BORDER|NK_WINDOW_BORDER)) { if (nk_tree_push(&ctx, NK_TREE_NODE, "Window", NK_MAXIMIZED)) { static int selected[8]; if (nk_tree_push(&ctx, NK_TREE_NODE, "Next", NK_MAXIMIZED)) { nk_layout_row_dynamic(&ctx, 20, 1); for (i = 0; i < 4; ++i) nk_selectable_label(&ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_LEFT, &selected[i]); nk_tree_pop(&ctx); } if (nk_tree_push(&ctx, NK_TREE_NODE, "Previous", NK_MAXIMIZED)) { nk_layout_row_dynamic(&ctx, 20, 1); for (i = 4; i < 8; ++i) nk_selectable_label(&ctx, (selected[i]) ? "Selected": "Unselected", NK_TEXT_LEFT, &selected[i]); nk_tree_pop(&ctx); } nk_tree_pop(&ctx); } nk_group_end(&ctx); } } nk_end(&ctx);} /* Draw */ glViewport(0, 0, display_width, display_height); glClear(GL_COLOR_BUFFER_BIT); glClearColor(0.5882, 0.6666, 0.6666, 1.0f); device_draw(&device, &ctx, width, height, scale, NK_ANTI_ALIASING_ON); glfwSwapBuffers(win); } glDeleteTextures(1,(const GLuint*)&media.skin); nk_font_atlas_clear(&atlas); nk_free(&ctx); device_shutdown(&device); glfwTerminate(); return 0; } ================================================ FILE: example/stb_image.h ================================================ /* stb_image - v2.08 - public domain image loader - http://nothings.org/stb_image.h no warranty implied; use at your own risk Do this: #define STB_IMAGE_IMPLEMENTATION before you include this file in *one* C or C++ file to create the implementation. // i.e. it should look like this: #include ... #include ... #include ... #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free QUICK NOTES: Primarily of interest to game developers and other people who can avoid problematic images and only need the trivial interface JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) PNG 1/2/4/8-bit-per-channel (16 bpc not supported) TGA (not sure what subset, if a subset) BMP non-1bpp, non-RLE PSD (composited view only, no extra channels, 8/16 bit-per-channel) GIF (*comp always reports as 4-channel) HDR (radiance rgbE format) PIC (Softimage PIC) PNM (PPM and PGM binary only) Animated GIF still needs a proper API, but here's one way to do it: http://gist.github.com/urraka/685d9a6340b26b830d49 - decode from memory or through FILE (define STBI_NO_STDIO to remove code) - decode from arbitrary I/O callbacks - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) Full documentation under "DOCUMENTATION" below. Revision 2.00 release notes: - Progressive JPEG is now supported. - PPM and PGM binary formats are now supported, thanks to Ken Miller. - x86 platforms now make use of SSE2 SIMD instructions for JPEG decoding, and ARM platforms can use NEON SIMD if requested. This work was done by Fabian "ryg" Giesen. SSE2 is used by default, but NEON must be enabled explicitly; see docs. With other JPEG optimizations included in this version, we see 2x speedup on a JPEG on an x86 machine, and a 1.5x speedup on a JPEG on an ARM machine, relative to previous versions of this library. The same results will not obtain for all JPGs and for all x86/ARM machines. (Note that progressive JPEGs are significantly slower to decode than regular JPEGs.) This doesn't mean that this is the fastest JPEG decoder in the land; rather, it brings it closer to parity with standard libraries. If you want the fastest decode, look elsewhere. (See "Philosophy" section of docs below.) See final bullet items below for more info on SIMD. - Added STBI_MALLOC, STBI_REALLOC, and STBI_FREE macros for replacing the memory allocator. Unlike other STBI libraries, these macros don't support a context parameter, so if you need to pass a context in to the allocator, you'll have to store it in a global or a thread-local variable. - Split existing STBI_NO_HDR flag into two flags, STBI_NO_HDR and STBI_NO_LINEAR. STBI_NO_HDR: suppress implementation of .hdr reader format STBI_NO_LINEAR: suppress high-dynamic-range light-linear float API - You can suppress implementation of any of the decoders to reduce your code footprint by #defining one or more of the following symbols before creating the implementation. STBI_NO_JPEG STBI_NO_PNG STBI_NO_BMP STBI_NO_PSD STBI_NO_TGA STBI_NO_GIF STBI_NO_HDR STBI_NO_PIC STBI_NO_PNM (.ppm and .pgm) - You can request *only* certain decoders and suppress all other ones (this will be more forward-compatible, as addition of new decoders doesn't require you to disable them explicitly): STBI_ONLY_JPEG STBI_ONLY_PNG STBI_ONLY_BMP STBI_ONLY_PSD STBI_ONLY_TGA STBI_ONLY_GIF STBI_ONLY_HDR STBI_ONLY_PIC STBI_ONLY_PNM (.ppm and .pgm) Note that you can define multiples of these, and you will get all of them ("only x" and "only y" is interpreted to mean "only x&y"). - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB - Compilation of all SIMD code can be suppressed with #define STBI_NO_SIMD It should not be necessary to disable SIMD unless you have issues compiling (e.g. using an x86 compiler which doesn't support SSE intrinsics or that doesn't support the method used to detect SSE2 support at run-time), and even those can be reported as bugs so I can refine the built-in compile-time checking to be smarter. - The old STBI_SIMD system which allowed installing a user-defined IDCT etc. has been removed. If you need this, don't upgrade. My assumption is that almost nobody was doing this, and those who were will find the built-in SIMD more satisfactory anyway. - RGB values computed for JPEG images are slightly different from previous versions of stb_image. (This is due to using less integer precision in SIMD.) The C code has been adjusted so that the same RGB values will be computed regardless of whether SIMD support is available, so your app should always produce consistent results. But these results are slightly different from previous versions. (Specifically, about 3% of available YCbCr values will compute different RGB results from pre-1.49 versions by +-1; most of the deviating values are one smaller in the G channel.) - If you must produce consistent results with previous versions of stb_image, #define STBI_JPEG_OLD and you will get the same results you used to; however, you will not get the SIMD speedups for the YCbCr-to-RGB conversion step (although you should still see significant JPEG speedup from the other changes). Please note that STBI_JPEG_OLD is a temporary feature; it will be removed in future versions of the library. It is only intended for near-term back-compatibility use. Latest revision history: 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA 2.07 (2015-09-13) partial animated GIF support limited 16-bit PSD support minor bugs, code cleanup, and compiler warnings 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit 2.03 (2015-04-12) additional corruption checking stbi_set_flip_vertically_on_load fix NEON support; fix mingw support 2.02 (2015-01-19) fix incorrect assert, fix warning 2.01 (2015-01-17) fix various warnings 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG 2.00 (2014-12-25) optimize JPEG, including x86 SSE2 & ARM NEON SIMD progressive JPEG PGM/PPM support STBI_MALLOC,STBI_REALLOC,STBI_FREE STBI_NO_*, STBI_ONLY_* GIF bugfix 1.48 (2014-12-14) fix incorrectly-named assert() 1.47 (2014-12-14) 1/2/4-bit PNG support (both grayscale and paletted) optimize PNG fix bug in interlaced PNG with user-specified channel count See end of file for full revision history. ============================ Contributors ========================= Image formats Bug fixes & warning fixes Sean Barrett (jpeg, png, bmp) Marc LeBlanc Nicolas Schulz (hdr, psd) Christpher Lloyd Jonathan Dummer (tga) Dave Moore Jean-Marc Lienher (gif) Won Chun Tom Seddon (pic) the Horde3D community Thatcher Ulrich (psd) Janez Zemva Ken Miller (pgm, ppm) Jonathan Blow urraka@github (animated gif) Laurent Gomila Aruelien Pocheville Ryamond Barbiero David Woo Extensions, features Martin Golini Jetro Lauha (stbi_info) Roy Eltham Martin "SpartanJ" Golini (stbi_info) Luke Graham James "moose2000" Brown (iPhone PNG) Thomas Ruf Ben "Disch" Wenger (io callbacks) John Bartholomew Omar Cornut (1/2/4-bit PNG) Ken Hamada Nicolas Guillemot (vertical flip) Cort Stratton Richard Mitton (16-bit PSD) Blazej Dariusz Roszkowski Thibault Reuille Paul Du Bois Guillaume George Jerry Jansson Hayaki Saito Johan Duparc Ronny Chevalier Optimizations & bugfixes Michal Cichon Fabian "ryg" Giesen Tero Hanninen Arseny Kapoulkine Sergio Gonzalez Cass Everitt Engin Manap If your name should be here but Martins Mozeiko isn't, let Sean know. Joseph Thomson Phil Jordan Nathan Reed Michaelangel007@github Nick Verigakis LICENSE This software is in the public domain. Where that dedication is not recognized, you are granted a perpetual, irrevocable license to copy, distribute, and modify this file as you see fit. */ #ifndef STBI_INCLUDE_STB_IMAGE_H #define STBI_INCLUDE_STB_IMAGE_H // DOCUMENTATION // // Limitations: // - no 16-bit-per-channel PNG // - no 12-bit-per-channel JPEG // - no JPEGs with arithmetic coding // - no 1-bit BMP // - GIF always returns *comp=4 // // Basic usage (see HDR discussion below for HDR usage): // int x,y,n; // unsigned char *data = stbi_load(filename, &x, &y, &n, 0); // // ... process data if not NULL ... // // ... x = width, y = height, n = # 8-bit components per pixel ... // // ... replace '0' with '1'..'4' to force that many components per pixel // // ... but 'n' will always be the number that it would have been if you said 0 // stbi_image_free(data) // // Standard parameters: // int *x -- outputs image width in pixels // int *y -- outputs image height in pixels // int *comp -- outputs # of image components in image file // int req_comp -- if non-zero, # of image components requested in result // // The return value from an image loader is an 'unsigned char *' which points // to the pixel data, or NULL on an allocation failure or if the image is // corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, // with each pixel consisting of N interleaved 8-bit components; the first // pixel pointed to is top-left-most in the image. There is no padding between // image scanlines or between pixels, regardless of format. The number of // components N is 'req_comp' if req_comp is non-zero, or *comp otherwise. // If req_comp is non-zero, *comp has the number of components that _would_ // have been output otherwise. E.g. if you set req_comp to 4, you will always // get RGBA output, but you can check *comp to see if it's trivially opaque // because e.g. there were only 3 channels in the source image. // // An output image with N components has the following components interleaved // in this order in each pixel: // // N=#comp components // 1 grey // 2 grey, alpha // 3 red, green, blue // 4 red, green, blue, alpha // // If image loading fails for any reason, the return value will be NULL, // and *x, *y, *comp will be unchanged. The function stbi_failure_reason() // can be queried for an extremely brief, end-user unfriendly explanation // of why the load failed. Define STBI_NO_FAILURE_STRINGS to avoid // compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly // more user-friendly ones. // // Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. // // =========================================================================== // // Philosophy // // stb libraries are designed with the following priorities: // // 1. easy to use // 2. easy to maintain // 3. good performance // // Sometimes I let "good performance" creep up in priority over "easy to maintain", // and for best performance I may provide less-easy-to-use APIs that give higher // performance, in addition to the easy to use ones. Nevertheless, it's important // to keep in mind that from the standpoint of you, a client of this library, // all you care about is #1 and #3, and stb libraries do not emphasize #3 above all. // // Some secondary priorities arise directly from the first two, some of which // make more explicit reasons why performance can't be emphasized. // // - Portable ("ease of use") // - Small footprint ("easy to maintain") // - No dependencies ("ease of use") // // =========================================================================== // // I/O callbacks // // I/O callbacks allow you to read from arbitrary sources, like packaged // files or some other source. Data read from callbacks are processed // through a small internal buffer (currently 128 bytes) to try to reduce // overhead. // // The three functions you must define are "read" (reads some bytes of data), // "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). // // =========================================================================== // // SIMD support // // The JPEG decoder will try to automatically use SIMD kernels on x86 when // supported by the compiler. For ARM Neon support, you must explicitly // request it. // // (The old do-it-yourself SIMD API is no longer supported in the current // code.) // // On x86, SSE2 will automatically be used when available based on a run-time // test; if not, the generic C versions are used as a fall-back. On ARM targets, // the typical path is to have separate builds for NEON and non-NEON devices // (at least this is true for iOS and Android). Therefore, the NEON support is // toggled by a build flag: define STBI_NEON to get NEON loops. // // The output of the JPEG decoder is slightly different from versions where // SIMD support was introduced (that is, for versions before 1.49). The // difference is only +-1 in the 8-bit RGB channels, and only on a small // fraction of pixels. You can force the pre-1.49 behavior by defining // STBI_JPEG_OLD, but this will disable some of the SIMD decoding path // and hence cost some performance. // // If for some reason you do not want to use any of SIMD code, or if // you have issues compiling it, you can disable it entirely by // defining STBI_NO_SIMD. // // =========================================================================== // // HDR image support (disable by defining STBI_NO_HDR) // // stb_image now supports loading HDR images in general, and currently // the Radiance .HDR file format, although the support is provided // generically. You can still load any file through the existing interface; // if you attempt to load an HDR file, it will be automatically remapped to // LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; // both of these constants can be reconfigured through this interface: // // stbi_hdr_to_ldr_gamma(2.2f); // stbi_hdr_to_ldr_scale(1.0f); // // (note, do not use _inverse_ constants; stbi_image will invert them // appropriately). // // Additionally, there is a new, parallel interface for loading files as // (linear) floats to preserve the full dynamic range: // // float *data = stbi_loadf(filename, &x, &y, &n, 0); // // If you load LDR images through this interface, those images will // be promoted to floating point values, run through the inverse of // constants corresponding to the above: // // stbi_ldr_to_hdr_scale(1.0f); // stbi_ldr_to_hdr_gamma(2.2f); // // Finally, given a filename (or an open file or memory block--see header // file for details) containing image data, you can query for the "most // appropriate" interface to use (that is, whether the image is HDR or // not), using: // // stbi_is_hdr(char *filename); // // =========================================================================== // // iPhone PNG support: // // By default we convert iphone-formatted PNGs back to RGB, even though // they are internally encoded differently. You can disable this conversion // by by calling stbi_convert_iphone_png_to_rgb(0), in which case // you will always just get the native iphone "format" through (which // is BGR stored in RGB). // // Call stbi_set_unpremultiply_on_load(1) as well to force a divide per // pixel to remove any premultiplied alpha *only* if the image file explicitly // says there's premultiplied data (currently only happens in iPhone images, // and only if iPhone convert-to-rgb processing is on). // #ifndef STBI_NO_STDIO #include #endif // STBI_NO_STDIO #define STBI_VERSION 1 enum { STBI_default = 0, // only used for req_comp STBI_grey = 1, STBI_grey_alpha = 2, STBI_rgb = 3, STBI_rgb_alpha = 4 }; typedef unsigned char stbi_uc; #ifdef __cplusplus extern "C" { #endif #ifdef STB_IMAGE_STATIC #define STBIDEF static #else #define STBIDEF extern #endif ////////////////////////////////////////////////////////////////////////////// // // PRIMARY API - works on images of any type // // // load image by filename, open file, or memory buffer // typedef struct { int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative int (*eof) (void *user); // returns nonzero if we are at end of file/data } stbi_io_callbacks; STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *comp, int req_comp); STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *comp, int req_comp); STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *comp, int req_comp); #ifndef STBI_NO_STDIO STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); // for stbi_load_from_file, file pointer is left pointing immediately after image #endif #ifndef STBI_NO_LINEAR STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *comp, int req_comp); STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp); STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp); #ifndef STBI_NO_STDIO STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); #endif #endif #ifndef STBI_NO_HDR STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); STBIDEF void stbi_hdr_to_ldr_scale(float scale); #endif #ifndef STBI_NO_LINEAR STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); STBIDEF void stbi_ldr_to_hdr_scale(float scale); #endif // STBI_NO_HDR // stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); #ifndef STBI_NO_STDIO STBIDEF int stbi_is_hdr (char const *filename); STBIDEF int stbi_is_hdr_from_file(FILE *f); #endif // STBI_NO_STDIO // get a VERY brief reason for failure // NOT THREADSAFE STBIDEF const char *stbi_failure_reason (void); // free the loaded image -- this is just free() STBIDEF void stbi_image_free (void *retval_from_stbi_load); // get image dimensions & components without fully decoding STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); #ifndef STBI_NO_STDIO STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); #endif // for image formats that explicitly notate that they have premultiplied alpha, // we just return the colors as stored in the file. set this flag to force // unpremultiplication. results are undefined if the unpremultiply overflow. STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); // indicate whether we should process iphone images back to canonical format, // or just pass them through "as-is" STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); // flip the image vertically, so the first pixel in the output array is the bottom left STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); // ZLIB client - used by PNG, available for other purposes STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); #ifdef __cplusplus } #endif // // //// end header file ///////////////////////////////////////////////////// #endif // STBI_INCLUDE_STB_IMAGE_H #ifdef STB_IMAGE_IMPLEMENTATION #if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ || defined(STBI_ONLY_ZLIB) #ifndef STBI_ONLY_JPEG #define STBI_NO_JPEG #endif #ifndef STBI_ONLY_PNG #define STBI_NO_PNG #endif #ifndef STBI_ONLY_BMP #define STBI_NO_BMP #endif #ifndef STBI_ONLY_PSD #define STBI_NO_PSD #endif #ifndef STBI_ONLY_TGA #define STBI_NO_TGA #endif #ifndef STBI_ONLY_GIF #define STBI_NO_GIF #endif #ifndef STBI_ONLY_HDR #define STBI_NO_HDR #endif #ifndef STBI_ONLY_PIC #define STBI_NO_PIC #endif #ifndef STBI_ONLY_PNM #define STBI_NO_PNM #endif #endif #if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) #define STBI_NO_ZLIB #endif #include #include // ptrdiff_t on osx #include #include #if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) #include // ldexp #endif #ifndef STBI_NO_STDIO #include #endif #ifndef STBI_ASSERT #include #define STBI_ASSERT(x) assert(x) #endif #ifndef _MSC_VER #ifdef __cplusplus #define stbi_inline inline #else #define stbi_inline #endif #else #define stbi_inline __forceinline #endif #ifdef _MSC_VER typedef unsigned short stbi__uint16; typedef signed short stbi__int16; typedef unsigned int stbi__uint32; typedef signed int stbi__int32; #else #include typedef uint16_t stbi__uint16; typedef int16_t stbi__int16; typedef uint32_t stbi__uint32; typedef int32_t stbi__int32; #endif // should produce compiler error if size is wrong typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; #ifdef _MSC_VER #define STBI_NOTUSED(v) (void)(v) #else #define STBI_NOTUSED(v) (void)sizeof(v) #endif #ifdef _MSC_VER #define STBI_HAS_LROTL #endif #ifdef STBI_HAS_LROTL #define stbi_lrot(x,y) _lrotl(x,y) #else #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) #endif #if defined(STBI_MALLOC) && defined(STBI_FREE) && defined(STBI_REALLOC) // ok #elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) // ok #else #error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC." #endif #ifndef STBI_MALLOC #define STBI_MALLOC(sz) malloc(sz) #define STBI_REALLOC(p,sz) realloc(p,sz) #define STBI_FREE(p) free(p) #endif // x86/x64 detection #if defined(__x86_64__) || defined(_M_X64) #define STBI__X64_TARGET #elif defined(__i386) || defined(_M_IX86) #define STBI__X86_TARGET #endif #if defined(__GNUC__) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) // NOTE: not clear do we actually need this for the 64-bit path? // gcc doesn't support sse2 intrinsics unless you compile with -msse2, // (but compiling with -msse2 allows the compiler to use SSE2 everywhere; // this is just broken and gcc are jerks for not fixing it properly // http://www.virtualdub.org/blog/pivot/entry.php?id=363 ) #define STBI_NO_SIMD #endif #if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) // Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET // // 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the // Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. // As a result, enabling SSE2 on 32-bit MinGW is dangerous when not // simultaneously enabling "-mstackrealign". // // See https://github.com/nothings/stb/issues/81 for more information. // // So default to no SSE2 on 32-bit MinGW. If you've read this far and added // -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. #define STBI_NO_SIMD #endif #if !defined(STBI_NO_SIMD) && defined(STBI__X86_TARGET) #define STBI_SSE2 #include #ifdef _MSC_VER #if _MSC_VER >= 1400 // not VC6 #include // __cpuid static int stbi__cpuid3(void) { int info[4]; __cpuid(info,1); return info[3]; } #else static int stbi__cpuid3(void) { int res; __asm { mov eax,1 cpuid mov res,edx } return res; } #endif #define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name static int stbi__sse2_available() { int info3 = stbi__cpuid3(); return ((info3 >> 26) & 1) != 0; } #else // assume GCC-style if not VC++ #define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) static int stbi__sse2_available() { #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 408 // GCC 4.8 or later // GCC 4.8+ has a nice way to do this return __builtin_cpu_supports("sse2"); #else // portable way to do this, preferably without using GCC inline ASM? // just bail for now. return 0; #endif } #endif #endif // ARM NEON #if defined(STBI_NO_SIMD) && defined(STBI_NEON) #undef STBI_NEON #endif #ifdef STBI_NEON #include // assume GCC or Clang on ARM targets #define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) #endif #ifndef STBI_SIMD_ALIGN #define STBI_SIMD_ALIGN(type, name) type name #endif /////////////////////////////////////////////// // // stbi__context struct and start_xxx functions // stbi__context structure is our basic context used by all images, so it // contains all the IO context, plus some basic image information typedef struct { stbi__uint32 img_x, img_y; int img_n, img_out_n; stbi_io_callbacks io; void *io_user_data; int read_from_callbacks; int buflen; stbi_uc buffer_start[128]; stbi_uc *img_buffer, *img_buffer_end; stbi_uc *img_buffer_original, *img_buffer_original_end; } stbi__context; static void stbi__refill_buffer(stbi__context *s); // initialize a memory-decode context static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) { s->io.read = NULL; s->read_from_callbacks = 0; s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; } // initialize a callback-based context static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) { s->io = *c; s->io_user_data = user; s->buflen = sizeof(s->buffer_start); s->read_from_callbacks = 1; s->img_buffer_original = s->buffer_start; stbi__refill_buffer(s); s->img_buffer_original_end = s->img_buffer_end; } #ifndef STBI_NO_STDIO static int stbi__stdio_read(void *user, char *data, int size) { return (int) fread(data,1,size,(FILE*) user); } static void stbi__stdio_skip(void *user, int n) { fseek((FILE*) user, n, SEEK_CUR); } static int stbi__stdio_eof(void *user) { return feof((FILE*) user); } static stbi_io_callbacks stbi__stdio_callbacks = { stbi__stdio_read, stbi__stdio_skip, stbi__stdio_eof, }; static void stbi__start_file(stbi__context *s, FILE *f) { stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); } //static void stop_file(stbi__context *s) { } #endif // !STBI_NO_STDIO static void stbi__rewind(stbi__context *s) { // conceptually rewind SHOULD rewind to the beginning of the stream, // but we just rewind to the beginning of the initial buffer, because // we only use it after doing 'test', which only ever looks at at most 92 bytes s->img_buffer = s->img_buffer_original; s->img_buffer_end = s->img_buffer_original_end; } #ifndef STBI_NO_JPEG static int stbi__jpeg_test(stbi__context *s); static stbi_uc *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_PNG static int stbi__png_test(stbi__context *s); static stbi_uc *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_BMP static int stbi__bmp_test(stbi__context *s); static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_TGA static int stbi__tga_test(stbi__context *s); static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_PSD static int stbi__psd_test(stbi__context *s); static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_HDR static int stbi__hdr_test(stbi__context *s); static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_PIC static int stbi__pic_test(stbi__context *s); static stbi_uc *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_GIF static int stbi__gif_test(stbi__context *s); static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); #endif #ifndef STBI_NO_PNM static int stbi__pnm_test(stbi__context *s); static stbi_uc *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); #endif // this is not threadsafe static const char *stbi__g_failure_reason; STBIDEF const char *stbi_failure_reason(void) { return stbi__g_failure_reason; } static int stbi__err(const char *str) { stbi__g_failure_reason = str; return 0; } static void *stbi__malloc(size_t size) { return STBI_MALLOC(size); } // stbi__err - error // stbi__errpf - error returning pointer to float // stbi__errpuc - error returning pointer to unsigned char #ifdef STBI_NO_FAILURE_STRINGS #define stbi__err(x,y) 0 #elif defined(STBI_FAILURE_USERMSG) #define stbi__err(x,y) stbi__err(y) #else #define stbi__err(x,y) stbi__err(x) #endif #define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) #define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) STBIDEF void stbi_image_free(void *retval_from_stbi_load) { STBI_FREE(retval_from_stbi_load); } #ifndef STBI_NO_LINEAR static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); #endif #ifndef STBI_NO_HDR static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); #endif static int stbi__vertically_flip_on_load = 0; STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) { stbi__vertically_flip_on_load = flag_true_if_should_flip; } static unsigned char *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) { #ifndef STBI_NO_JPEG if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_PNG if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_BMP if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_GIF if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_PSD if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_PIC if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_PNM if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp); #endif #ifndef STBI_NO_HDR if (stbi__hdr_test(s)) { float *hdr = stbi__hdr_load(s, x,y,comp,req_comp); return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); } #endif #ifndef STBI_NO_TGA // test tga last because it's a crappy test! if (stbi__tga_test(s)) return stbi__tga_load(s,x,y,comp,req_comp); #endif return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); } static unsigned char *stbi__load_flip(stbi__context *s, int *x, int *y, int *comp, int req_comp) { unsigned char *result = stbi__load_main(s, x, y, comp, req_comp); if (stbi__vertically_flip_on_load && result != NULL) { int w = *x, h = *y; int depth = req_comp ? req_comp : *comp; int row,col,z; stbi_uc temp; // @OPTIMIZE: use a bigger temp buffer and memcpy multiple pixels at once for (row = 0; row < (h>>1); row++) { for (col = 0; col < w; col++) { for (z = 0; z < depth; z++) { temp = result[(row * w + col) * depth + z]; result[(row * w + col) * depth + z] = result[((h - row - 1) * w + col) * depth + z]; result[((h - row - 1) * w + col) * depth + z] = temp; } } } } return result; } #ifndef STBI_NO_HDR static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) { if (stbi__vertically_flip_on_load && result != NULL) { int w = *x, h = *y; int depth = req_comp ? req_comp : *comp; int row,col,z; float temp; // @OPTIMIZE: use a bigger temp buffer and memcpy multiple pixels at once for (row = 0; row < (h>>1); row++) { for (col = 0; col < w; col++) { for (z = 0; z < depth; z++) { temp = result[(row * w + col) * depth + z]; result[(row * w + col) * depth + z] = result[((h - row - 1) * w + col) * depth + z]; result[((h - row - 1) * w + col) * depth + z] = temp; } } } } } #endif #ifndef STBI_NO_STDIO static FILE *stbi__fopen(char const *filename, char const *mode) { FILE *f; #if defined(_MSC_VER) && _MSC_VER >= 1400 if (0 != fopen_s(&f, filename, mode)) f=0; #else f = fopen(filename, mode); #endif return f; } STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) { FILE *f = stbi__fopen(filename, "rb"); unsigned char *result; if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); result = stbi_load_from_file(f,x,y,comp,req_comp); fclose(f); return result; } STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) { unsigned char *result; stbi__context s; stbi__start_file(&s,f); result = stbi__load_flip(&s,x,y,comp,req_comp); if (result) { // need to 'unget' all the characters in the IO buffer fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); } return result; } #endif //!STBI_NO_STDIO STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) { stbi__context s; stbi__start_mem(&s,buffer,len); return stbi__load_flip(&s,x,y,comp,req_comp); } STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) { stbi__context s; stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); return stbi__load_flip(&s,x,y,comp,req_comp); } #ifndef STBI_NO_LINEAR static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) { unsigned char *data; #ifndef STBI_NO_HDR if (stbi__hdr_test(s)) { float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp); if (hdr_data) stbi__float_postprocess(hdr_data,x,y,comp,req_comp); return hdr_data; } #endif data = stbi__load_flip(s, x, y, comp, req_comp); if (data) return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); } STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) { stbi__context s; stbi__start_mem(&s,buffer,len); return stbi__loadf_main(&s,x,y,comp,req_comp); } STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) { stbi__context s; stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); return stbi__loadf_main(&s,x,y,comp,req_comp); } #ifndef STBI_NO_STDIO STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) { float *result; FILE *f = stbi__fopen(filename, "rb"); if (!f) return stbi__errpf("can't fopen", "Unable to open file"); result = stbi_loadf_from_file(f,x,y,comp,req_comp); fclose(f); return result; } STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) { stbi__context s; stbi__start_file(&s,f); return stbi__loadf_main(&s,x,y,comp,req_comp); } #endif // !STBI_NO_STDIO #endif // !STBI_NO_LINEAR // these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is // defined, for API simplicity; if STBI_NO_LINEAR is defined, it always // reports false! STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) { #ifndef STBI_NO_HDR stbi__context s; stbi__start_mem(&s,buffer,len); return stbi__hdr_test(&s); #else STBI_NOTUSED(buffer); STBI_NOTUSED(len); return 0; #endif } #ifndef STBI_NO_STDIO STBIDEF int stbi_is_hdr (char const *filename) { FILE *f = stbi__fopen(filename, "rb"); int result=0; if (f) { result = stbi_is_hdr_from_file(f); fclose(f); } return result; } STBIDEF int stbi_is_hdr_from_file(FILE *f) { #ifndef STBI_NO_HDR stbi__context s; stbi__start_file(&s,f); return stbi__hdr_test(&s); #else STBI_NOTUSED(f); return 0; #endif } #endif // !STBI_NO_STDIO STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) { #ifndef STBI_NO_HDR stbi__context s; stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); return stbi__hdr_test(&s); #else STBI_NOTUSED(clbk); STBI_NOTUSED(user); return 0; #endif } static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; #ifndef STBI_NO_LINEAR STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } #endif STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } ////////////////////////////////////////////////////////////////////////////// // // Common code used by all image loaders // enum { STBI__SCAN_load=0, STBI__SCAN_type, STBI__SCAN_header }; static void stbi__refill_buffer(stbi__context *s) { int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); if (n == 0) { // at end of file, treat same as if from memory, but need to handle case // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file s->read_from_callbacks = 0; s->img_buffer = s->buffer_start; s->img_buffer_end = s->buffer_start+1; *s->img_buffer = 0; } else { s->img_buffer = s->buffer_start; s->img_buffer_end = s->buffer_start + n; } } stbi_inline static stbi_uc stbi__get8(stbi__context *s) { if (s->img_buffer < s->img_buffer_end) return *s->img_buffer++; if (s->read_from_callbacks) { stbi__refill_buffer(s); return *s->img_buffer++; } return 0; } stbi_inline static int stbi__at_eof(stbi__context *s) { if (s->io.read) { if (!(s->io.eof)(s->io_user_data)) return 0; // if feof() is true, check if buffer = end // special case: we've only got the special 0 character at the end if (s->read_from_callbacks == 0) return 1; } return s->img_buffer >= s->img_buffer_end; } static void stbi__skip(stbi__context *s, int n) { if (n < 0) { s->img_buffer = s->img_buffer_end; return; } if (s->io.read) { int blen = (int) (s->img_buffer_end - s->img_buffer); if (blen < n) { s->img_buffer = s->img_buffer_end; (s->io.skip)(s->io_user_data, n - blen); return; } } s->img_buffer += n; } static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) { if (s->io.read) { int blen = (int) (s->img_buffer_end - s->img_buffer); if (blen < n) { int res, count; memcpy(buffer, s->img_buffer, blen); count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); res = (count == (n-blen)); s->img_buffer = s->img_buffer_end; return res; } } if (s->img_buffer+n <= s->img_buffer_end) { memcpy(buffer, s->img_buffer, n); s->img_buffer += n; return 1; } else return 0; } static int stbi__get16be(stbi__context *s) { int z = stbi__get8(s); return (z << 8) + stbi__get8(s); } static stbi__uint32 stbi__get32be(stbi__context *s) { stbi__uint32 z = stbi__get16be(s); return (z << 16) + stbi__get16be(s); } #if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) // nothing #else static int stbi__get16le(stbi__context *s) { int z = stbi__get8(s); return z + (stbi__get8(s) << 8); } #endif #ifndef STBI_NO_BMP static stbi__uint32 stbi__get32le(stbi__context *s) { stbi__uint32 z = stbi__get16le(s); return z + (stbi__get16le(s) << 16); } #endif #define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings ////////////////////////////////////////////////////////////////////////////// // // generic converter from built-in img_n to req_comp // individual types do this automatically as much as possible (e.g. jpeg // does all cases internally since it needs to colorspace convert anyway, // and it never has alpha, so very few cases ). png can automatically // interleave an alpha=255 channel, but falls back to this for other cases // // assume data buffer is malloced, so malloc a new one and free that one // only failure mode is malloc failing static stbi_uc stbi__compute_y(int r, int g, int b) { return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); } static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) { int i,j; unsigned char *good; if (req_comp == img_n) return data; STBI_ASSERT(req_comp >= 1 && req_comp <= 4); good = (unsigned char *) stbi__malloc(req_comp * x * y); if (good == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } for (j=0; j < (int) y; ++j) { unsigned char *src = data + j * x * img_n ; unsigned char *dest = good + j * x * req_comp; #define COMBO(a,b) ((a)*8+(b)) #define CASE(a,b) case COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) // convert source image with img_n components to one with req_comp components; // avoid switch per pixel, so use switch per scanline and massive macros switch (COMBO(img_n, req_comp)) { CASE(1,2) dest[0]=src[0], dest[1]=255; break; CASE(1,3) dest[0]=dest[1]=dest[2]=src[0]; break; CASE(1,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; break; CASE(2,1) dest[0]=src[0]; break; CASE(2,3) dest[0]=dest[1]=dest[2]=src[0]; break; CASE(2,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; break; CASE(3,4) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; break; CASE(3,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; CASE(3,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; break; CASE(4,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; CASE(4,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; break; CASE(4,3) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; break; default: STBI_ASSERT(0); } #undef CASE } STBI_FREE(data); return good; } #ifndef STBI_NO_LINEAR static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) { int i,k,n; float *output = (float *) stbi__malloc(x * y * comp * sizeof(float)); if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } // compute number of non-alpha components if (comp & 1) n = comp; else n = comp-1; for (i=0; i < x*y; ++i) { for (k=0; k < n; ++k) { output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); } if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; } STBI_FREE(data); return output; } #endif #ifndef STBI_NO_HDR #define stbi__float2int(x) ((int) (x)) static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) { int i,k,n; stbi_uc *output = (stbi_uc *) stbi__malloc(x * y * comp); if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } // compute number of non-alpha components if (comp & 1) n = comp; else n = comp-1; for (i=0; i < x*y; ++i) { for (k=0; k < n; ++k) { float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; if (z < 0) z = 0; if (z > 255) z = 255; output[i*comp + k] = (stbi_uc) stbi__float2int(z); } if (k < comp) { float z = data[i*comp+k] * 255 + 0.5f; if (z < 0) z = 0; if (z > 255) z = 255; output[i*comp + k] = (stbi_uc) stbi__float2int(z); } } STBI_FREE(data); return output; } #endif ////////////////////////////////////////////////////////////////////////////// // // "baseline" JPEG/JFIF decoder // // simple implementation // - doesn't support delayed output of y-dimension // - simple interface (only one output format: 8-bit interleaved RGB) // - doesn't try to recover corrupt jpegs // - doesn't allow partial loading, loading multiple at once // - still fast on x86 (copying globals into locals doesn't help x86) // - allocates lots of intermediate memory (full size of all components) // - non-interleaved case requires this anyway // - allows good upsampling (see next) // high-quality // - upsampled channels are bilinearly interpolated, even across blocks // - quality integer IDCT derived from IJG's 'slow' // performance // - fast huffman; reasonable integer IDCT // - some SIMD kernels for common paths on targets with SSE2/NEON // - uses a lot of intermediate memory, could cache poorly #ifndef STBI_NO_JPEG // huffman decoding acceleration #define FAST_BITS 9 // larger handles more cases; smaller stomps less cache typedef struct { stbi_uc fast[1 << FAST_BITS]; // weirdly, repacking this into AoS is a 10% speed loss, instead of a win stbi__uint16 code[256]; stbi_uc values[256]; stbi_uc size[257]; unsigned int maxcode[18]; int delta[17]; // old 'firstsymbol' - old 'firstcode' } stbi__huffman; typedef struct { stbi__context *s; stbi__huffman huff_dc[4]; stbi__huffman huff_ac[4]; stbi_uc dequant[4][64]; stbi__int16 fast_ac[4][1 << FAST_BITS]; // sizes for components, interleaved MCUs int img_h_max, img_v_max; int img_mcu_x, img_mcu_y; int img_mcu_w, img_mcu_h; // definition of jpeg image component struct { int id; int h,v; int tq; int hd,ha; int dc_pred; int x,y,w2,h2; stbi_uc *data; void *raw_data, *raw_coeff; stbi_uc *linebuf; short *coeff; // progressive only int coeff_w, coeff_h; // number of 8x8 coefficient blocks } img_comp[4]; stbi__uint32 code_buffer; // jpeg entropy-coded buffer int code_bits; // number of valid bits unsigned char marker; // marker seen while filling entropy buffer int nomore; // flag if we saw a marker so must stop int progressive; int spec_start; int spec_end; int succ_high; int succ_low; int eob_run; int scan_n, order[4]; int restart_interval, todo; // kernels void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); } stbi__jpeg; static int stbi__build_huffman(stbi__huffman *h, int *count) { int i,j,k=0,code; // build size list for each symbol (from JPEG spec) for (i=0; i < 16; ++i) for (j=0; j < count[i]; ++j) h->size[k++] = (stbi_uc) (i+1); h->size[k] = 0; // compute actual symbols (from jpeg spec) code = 0; k = 0; for(j=1; j <= 16; ++j) { // compute delta to add to code to compute symbol id h->delta[j] = k - code; if (h->size[k] == j) { while (h->size[k] == j) h->code[k++] = (stbi__uint16) (code++); if (code-1 >= (1 << j)) return stbi__err("bad code lengths","Corrupt JPEG"); } // compute largest code + 1 for this size, preshifted as needed later h->maxcode[j] = code << (16-j); code <<= 1; } h->maxcode[j] = 0xffffffff; // build non-spec acceleration table; 255 is flag for not-accelerated memset(h->fast, 255, 1 << FAST_BITS); for (i=0; i < k; ++i) { int s = h->size[i]; if (s <= FAST_BITS) { int c = h->code[i] << (FAST_BITS-s); int m = 1 << (FAST_BITS-s); for (j=0; j < m; ++j) { h->fast[c+j] = (stbi_uc) i; } } } return 1; } // build a table that decodes both magnitude and value of small ACs in // one go. static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) { int i; for (i=0; i < (1 << FAST_BITS); ++i) { stbi_uc fast = h->fast[i]; fast_ac[i] = 0; if (fast < 255) { int rs = h->values[fast]; int run = (rs >> 4) & 15; int magbits = rs & 15; int len = h->size[fast]; if (magbits && len + magbits <= FAST_BITS) { // magnitude code followed by receive_extend code int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); int m = 1 << (magbits - 1); if (k < m) k += (-1 << magbits) + 1; // if the result is small enough, we can fit it in fast_ac table if (k >= -128 && k <= 127) fast_ac[i] = (stbi__int16) ((k << 8) + (run << 4) + (len + magbits)); } } } } static void stbi__grow_buffer_unsafe(stbi__jpeg *j) { do { int b = j->nomore ? 0 : stbi__get8(j->s); if (b == 0xff) { int c = stbi__get8(j->s); if (c != 0) { j->marker = (unsigned char) c; j->nomore = 1; return; } } j->code_buffer |= b << (24 - j->code_bits); j->code_bits += 8; } while (j->code_bits <= 24); } // (1 << n) - 1 static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; // decode a jpeg huffman value from the bitstream stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) { unsigned int temp; int c,k; if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); // look at the top FAST_BITS and determine what symbol ID it is, // if the code is <= FAST_BITS c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); k = h->fast[c]; if (k < 255) { int s = h->size[k]; if (s > j->code_bits) return -1; j->code_buffer <<= s; j->code_bits -= s; return h->values[k]; } // naive test is to shift the code_buffer down so k bits are // valid, then test against maxcode. To speed this up, we've // preshifted maxcode left so that it has (16-k) 0s at the // end; in other words, regardless of the number of bits, it // wants to be compared against something shifted to have 16; // that way we don't need to shift inside the loop. temp = j->code_buffer >> 16; for (k=FAST_BITS+1 ; ; ++k) if (temp < h->maxcode[k]) break; if (k == 17) { // error! code not found j->code_bits -= 16; return -1; } if (k > j->code_bits) return -1; // convert the huffman code to the symbol id c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); // convert the id to a symbol j->code_bits -= k; j->code_buffer <<= k; return h->values[c]; } // bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB k = stbi_lrot(j->code_buffer, n); STBI_ASSERT(n >= 0 && n < (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))); j->code_buffer = k & ~stbi__bmask[n]; k &= stbi__bmask[n]; j->code_bits -= n; return k + (stbi__jbias[n] & ~sgn); } // get some unsigned bits stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) { unsigned int k; if (j->code_bits < n) stbi__grow_buffer_unsafe(j); k = stbi_lrot(j->code_buffer, n); j->code_buffer = k & ~stbi__bmask[n]; k &= stbi__bmask[n]; j->code_bits -= n; return k; } stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) { unsigned int k; if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); k = j->code_buffer; j->code_buffer <<= 1; --j->code_bits; return k & 0x80000000; } // given a value that's at position X in the zigzag stream, // where does it appear in the 8x8 matrix coded as row-major? static stbi_uc stbi__jpeg_dezigzag[64+15] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63, // let corrupt input sample past end 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63 }; // decode one 64-entry block-- static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi_uc *dequant) { int diff,dc,k; int t; if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); t = stbi__jpeg_huff_decode(j, hdc); if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); // 0 all the ac values now so we can do it 32-bits at a time memset(data,0,64*sizeof(data[0])); diff = t ? stbi__extend_receive(j, t) : 0; dc = j->img_comp[b].dc_pred + diff; j->img_comp[b].dc_pred = dc; data[0] = (short) (dc * dequant[0]); // decode AC components, see JPEG spec k = 1; do { unsigned int zig; int c,r,s; if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); r = fac[c]; if (r) { // fast-AC path k += (r >> 4) & 15; // run s = r & 15; // combined length j->code_buffer <<= s; j->code_bits -= s; // decode into unzigzag'd location zig = stbi__jpeg_dezigzag[k++]; data[zig] = (short) ((r >> 8) * dequant[zig]); } else { int rs = stbi__jpeg_huff_decode(j, hac); if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); s = rs & 15; r = rs >> 4; if (s == 0) { if (rs != 0xf0) break; // end block k += 16; } else { k += r; // decode into unzigzag'd location zig = stbi__jpeg_dezigzag[k++]; data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); } } } while (k < 64); return 1; } static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) { int diff,dc; int t; if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); if (j->succ_high == 0) { // first scan for DC coefficient, must be first memset(data,0,64*sizeof(data[0])); // 0 all the ac values now t = stbi__jpeg_huff_decode(j, hdc); diff = t ? stbi__extend_receive(j, t) : 0; dc = j->img_comp[b].dc_pred + diff; j->img_comp[b].dc_pred = dc; data[0] = (short) (dc << j->succ_low); } else { // refinement scan for DC coefficient if (stbi__jpeg_get_bit(j)) data[0] += (short) (1 << j->succ_low); } return 1; } // @OPTIMIZE: store non-zigzagged during the decode passes, // and only de-zigzag when dequantizing static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) { int k; if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); if (j->succ_high == 0) { int shift = j->succ_low; if (j->eob_run) { --j->eob_run; return 1; } k = j->spec_start; do { unsigned int zig; int c,r,s; if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); r = fac[c]; if (r) { // fast-AC path k += (r >> 4) & 15; // run s = r & 15; // combined length j->code_buffer <<= s; j->code_bits -= s; zig = stbi__jpeg_dezigzag[k++]; data[zig] = (short) ((r >> 8) << shift); } else { int rs = stbi__jpeg_huff_decode(j, hac); if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); s = rs & 15; r = rs >> 4; if (s == 0) { if (r < 15) { j->eob_run = (1 << r); if (r) j->eob_run += stbi__jpeg_get_bits(j, r); --j->eob_run; break; } k += 16; } else { k += r; zig = stbi__jpeg_dezigzag[k++]; data[zig] = (short) (stbi__extend_receive(j,s) << shift); } } } while (k <= j->spec_end); } else { // refinement scan for these AC coefficients short bit = (short) (1 << j->succ_low); if (j->eob_run) { --j->eob_run; for (k = j->spec_start; k <= j->spec_end; ++k) { short *p = &data[stbi__jpeg_dezigzag[k]]; if (*p != 0) if (stbi__jpeg_get_bit(j)) if ((*p & bit)==0) { if (*p > 0) *p += bit; else *p -= bit; } } } else { k = j->spec_start; do { int r,s; int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); s = rs & 15; r = rs >> 4; if (s == 0) { if (r < 15) { j->eob_run = (1 << r) - 1; if (r) j->eob_run += stbi__jpeg_get_bits(j, r); r = 64; // force end of block } else { // r=15 s=0 should write 16 0s, so we just do // a run of 15 0s and then write s (which is 0), // so we don't have to do anything special here } } else { if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); // sign bit if (stbi__jpeg_get_bit(j)) s = bit; else s = -bit; } // advance by r while (k <= j->spec_end) { short *p = &data[stbi__jpeg_dezigzag[k++]]; if (*p != 0) { if (stbi__jpeg_get_bit(j)) if ((*p & bit)==0) { if (*p > 0) *p += bit; else *p -= bit; } } else { if (r == 0) { *p = (short) s; break; } --r; } } } while (k <= j->spec_end); } } return 1; } // take a -128..127 value and stbi__clamp it and convert to 0..255 stbi_inline static stbi_uc stbi__clamp(int x) { // trick to use a single test to catch both cases if ((unsigned int) x > 255) { if (x < 0) return 0; if (x > 255) return 255; } return (stbi_uc) x; } #define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) #define stbi__fsh(x) ((x) << 12) // derived from jidctint -- DCT_ISLOW #define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ p2 = s2; \ p3 = s6; \ p1 = (p2+p3) * stbi__f2f(0.5411961f); \ t2 = p1 + p3*stbi__f2f(-1.847759065f); \ t3 = p1 + p2*stbi__f2f( 0.765366865f); \ p2 = s0; \ p3 = s4; \ t0 = stbi__fsh(p2+p3); \ t1 = stbi__fsh(p2-p3); \ x0 = t0+t3; \ x3 = t0-t3; \ x1 = t1+t2; \ x2 = t1-t2; \ t0 = s7; \ t1 = s5; \ t2 = s3; \ t3 = s1; \ p3 = t0+t2; \ p4 = t1+t3; \ p1 = t0+t3; \ p2 = t1+t2; \ p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ t0 = t0*stbi__f2f( 0.298631336f); \ t1 = t1*stbi__f2f( 2.053119869f); \ t2 = t2*stbi__f2f( 3.072711026f); \ t3 = t3*stbi__f2f( 1.501321110f); \ p1 = p5 + p1*stbi__f2f(-0.899976223f); \ p2 = p5 + p2*stbi__f2f(-2.562915447f); \ p3 = p3*stbi__f2f(-1.961570560f); \ p4 = p4*stbi__f2f(-0.390180644f); \ t3 += p1+p4; \ t2 += p2+p3; \ t1 += p2+p4; \ t0 += p1+p3; static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) { int i,val[64],*v=val; stbi_uc *o; short *d = data; // columns for (i=0; i < 8; ++i,++d, ++v) { // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 && d[40]==0 && d[48]==0 && d[56]==0) { // no shortcut 0 seconds // (1|2|3|4|5|6|7)==0 0 seconds // all separate -0.047 seconds // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds int dcterm = d[0] << 2; v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; } else { STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) // constants scaled things up by 1<<12; let's bring them back // down, but keep 2 extra bits of precision x0 += 512; x1 += 512; x2 += 512; x3 += 512; v[ 0] = (x0+t3) >> 10; v[56] = (x0-t3) >> 10; v[ 8] = (x1+t2) >> 10; v[48] = (x1-t2) >> 10; v[16] = (x2+t1) >> 10; v[40] = (x2-t1) >> 10; v[24] = (x3+t0) >> 10; v[32] = (x3-t0) >> 10; } } for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { // no fast case since the first 1D IDCT spread components out STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) // constants scaled things up by 1<<12, plus we had 1<<2 from first // loop, plus horizontal and vertical each scale by sqrt(8) so together // we've got an extra 1<<3, so 1<<17 total we need to remove. // so we want to round that, which means adding 0.5 * 1<<17, // aka 65536. Also, we'll end up with -128 to 127 that we want // to encode as 0..255 by adding 128, so we'll add that before the shift x0 += 65536 + (128<<17); x1 += 65536 + (128<<17); x2 += 65536 + (128<<17); x3 += 65536 + (128<<17); // tried computing the shifts into temps, or'ing the temps to see // if any were out of range, but that was slower o[0] = stbi__clamp((x0+t3) >> 17); o[7] = stbi__clamp((x0-t3) >> 17); o[1] = stbi__clamp((x1+t2) >> 17); o[6] = stbi__clamp((x1-t2) >> 17); o[2] = stbi__clamp((x2+t1) >> 17); o[5] = stbi__clamp((x2-t1) >> 17); o[3] = stbi__clamp((x3+t0) >> 17); o[4] = stbi__clamp((x3-t0) >> 17); } } #ifdef STBI_SSE2 // sse2 integer IDCT. not the fastest possible implementation but it // produces bit-identical results to the generic C version so it's // fully "transparent". static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) { // This is constructed to match our regular (generic) integer IDCT exactly. __m128i row0, row1, row2, row3, row4, row5, row6, row7; __m128i tmp; // dot product constant: even elems=x, odd elems=y #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) // out(1) = c1[even]*x + c1[odd]*y #define dct_rot(out0,out1, x,y,c0,c1) \ __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) // out = in << 12 (in 16-bit, out 32-bit) #define dct_widen(out, in) \ __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) // wide add #define dct_wadd(out, a, b) \ __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ __m128i out##_h = _mm_add_epi32(a##_h, b##_h) // wide sub #define dct_wsub(out, a, b) \ __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) // butterfly a/b, add bias, then shift by "s" and pack #define dct_bfly32o(out0, out1, a,b,bias,s) \ { \ __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ dct_wadd(sum, abiased, b); \ dct_wsub(dif, abiased, b); \ out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ } // 8-bit interleave step (for transposes) #define dct_interleave8(a, b) \ tmp = a; \ a = _mm_unpacklo_epi8(a, b); \ b = _mm_unpackhi_epi8(tmp, b) // 16-bit interleave step (for transposes) #define dct_interleave16(a, b) \ tmp = a; \ a = _mm_unpacklo_epi16(a, b); \ b = _mm_unpackhi_epi16(tmp, b) #define dct_pass(bias,shift) \ { \ /* even part */ \ dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ __m128i sum04 = _mm_add_epi16(row0, row4); \ __m128i dif04 = _mm_sub_epi16(row0, row4); \ dct_widen(t0e, sum04); \ dct_widen(t1e, dif04); \ dct_wadd(x0, t0e, t3e); \ dct_wsub(x3, t0e, t3e); \ dct_wadd(x1, t1e, t2e); \ dct_wsub(x2, t1e, t2e); \ /* odd part */ \ dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ __m128i sum17 = _mm_add_epi16(row1, row7); \ __m128i sum35 = _mm_add_epi16(row3, row5); \ dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ dct_wadd(x4, y0o, y4o); \ dct_wadd(x5, y1o, y5o); \ dct_wadd(x6, y2o, y5o); \ dct_wadd(x7, y3o, y4o); \ dct_bfly32o(row0,row7, x0,x7,bias,shift); \ dct_bfly32o(row1,row6, x1,x6,bias,shift); \ dct_bfly32o(row2,row5, x2,x5,bias,shift); \ dct_bfly32o(row3,row4, x3,x4,bias,shift); \ } __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); // rounding biases in column/row passes, see stbi__idct_block for explanation. __m128i bias_0 = _mm_set1_epi32(512); __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); // load row0 = _mm_load_si128((const __m128i *) (data + 0*8)); row1 = _mm_load_si128((const __m128i *) (data + 1*8)); row2 = _mm_load_si128((const __m128i *) (data + 2*8)); row3 = _mm_load_si128((const __m128i *) (data + 3*8)); row4 = _mm_load_si128((const __m128i *) (data + 4*8)); row5 = _mm_load_si128((const __m128i *) (data + 5*8)); row6 = _mm_load_si128((const __m128i *) (data + 6*8)); row7 = _mm_load_si128((const __m128i *) (data + 7*8)); // column pass dct_pass(bias_0, 10); { // 16bit 8x8 transpose pass 1 dct_interleave16(row0, row4); dct_interleave16(row1, row5); dct_interleave16(row2, row6); dct_interleave16(row3, row7); // transpose pass 2 dct_interleave16(row0, row2); dct_interleave16(row1, row3); dct_interleave16(row4, row6); dct_interleave16(row5, row7); // transpose pass 3 dct_interleave16(row0, row1); dct_interleave16(row2, row3); dct_interleave16(row4, row5); dct_interleave16(row6, row7); } // row pass dct_pass(bias_1, 17); { // pack __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 __m128i p1 = _mm_packus_epi16(row2, row3); __m128i p2 = _mm_packus_epi16(row4, row5); __m128i p3 = _mm_packus_epi16(row6, row7); // 8bit 8x8 transpose pass 1 dct_interleave8(p0, p2); // a0e0a1e1... dct_interleave8(p1, p3); // c0g0c1g1... // transpose pass 2 dct_interleave8(p0, p1); // a0c0e0g0... dct_interleave8(p2, p3); // b0d0f0h0... // transpose pass 3 dct_interleave8(p0, p2); // a0b0c0d0... dct_interleave8(p1, p3); // a4b4c4d4... // store _mm_storel_epi64((__m128i *) out, p0); out += out_stride; _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; _mm_storel_epi64((__m128i *) out, p2); out += out_stride; _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; _mm_storel_epi64((__m128i *) out, p1); out += out_stride; _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; _mm_storel_epi64((__m128i *) out, p3); out += out_stride; _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); } #undef dct_const #undef dct_rot #undef dct_widen #undef dct_wadd #undef dct_wsub #undef dct_bfly32o #undef dct_interleave8 #undef dct_interleave16 #undef dct_pass } #endif // STBI_SSE2 #ifdef STBI_NEON // NEON integer IDCT. should produce bit-identical // results to the generic C version. static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) { int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); #define dct_long_mul(out, inq, coeff) \ int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) #define dct_long_mac(out, acc, inq, coeff) \ int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) #define dct_widen(out, inq) \ int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) // wide add #define dct_wadd(out, a, b) \ int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ int32x4_t out##_h = vaddq_s32(a##_h, b##_h) // wide sub #define dct_wsub(out, a, b) \ int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ int32x4_t out##_h = vsubq_s32(a##_h, b##_h) // butterfly a/b, then shift using "shiftop" by "s" and pack #define dct_bfly32o(out0,out1, a,b,shiftop,s) \ { \ dct_wadd(sum, a, b); \ dct_wsub(dif, a, b); \ out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ } #define dct_pass(shiftop, shift) \ { \ /* even part */ \ int16x8_t sum26 = vaddq_s16(row2, row6); \ dct_long_mul(p1e, sum26, rot0_0); \ dct_long_mac(t2e, p1e, row6, rot0_1); \ dct_long_mac(t3e, p1e, row2, rot0_2); \ int16x8_t sum04 = vaddq_s16(row0, row4); \ int16x8_t dif04 = vsubq_s16(row0, row4); \ dct_widen(t0e, sum04); \ dct_widen(t1e, dif04); \ dct_wadd(x0, t0e, t3e); \ dct_wsub(x3, t0e, t3e); \ dct_wadd(x1, t1e, t2e); \ dct_wsub(x2, t1e, t2e); \ /* odd part */ \ int16x8_t sum15 = vaddq_s16(row1, row5); \ int16x8_t sum17 = vaddq_s16(row1, row7); \ int16x8_t sum35 = vaddq_s16(row3, row5); \ int16x8_t sum37 = vaddq_s16(row3, row7); \ int16x8_t sumodd = vaddq_s16(sum17, sum35); \ dct_long_mul(p5o, sumodd, rot1_0); \ dct_long_mac(p1o, p5o, sum17, rot1_1); \ dct_long_mac(p2o, p5o, sum35, rot1_2); \ dct_long_mul(p3o, sum37, rot2_0); \ dct_long_mul(p4o, sum15, rot2_1); \ dct_wadd(sump13o, p1o, p3o); \ dct_wadd(sump24o, p2o, p4o); \ dct_wadd(sump23o, p2o, p3o); \ dct_wadd(sump14o, p1o, p4o); \ dct_long_mac(x4, sump13o, row7, rot3_0); \ dct_long_mac(x5, sump24o, row5, rot3_1); \ dct_long_mac(x6, sump23o, row3, rot3_2); \ dct_long_mac(x7, sump14o, row1, rot3_3); \ dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ } // load row0 = vld1q_s16(data + 0*8); row1 = vld1q_s16(data + 1*8); row2 = vld1q_s16(data + 2*8); row3 = vld1q_s16(data + 3*8); row4 = vld1q_s16(data + 4*8); row5 = vld1q_s16(data + 5*8); row6 = vld1q_s16(data + 6*8); row7 = vld1q_s16(data + 7*8); // add DC bias row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); // column pass dct_pass(vrshrn_n_s32, 10); // 16bit 8x8 transpose { // these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. // whether compilers actually get this is another story, sadly. #define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } #define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } #define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } // pass 1 dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 dct_trn16(row2, row3); dct_trn16(row4, row5); dct_trn16(row6, row7); // pass 2 dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 dct_trn32(row1, row3); dct_trn32(row4, row6); dct_trn32(row5, row7); // pass 3 dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 dct_trn64(row1, row5); dct_trn64(row2, row6); dct_trn64(row3, row7); #undef dct_trn16 #undef dct_trn32 #undef dct_trn64 } // row pass // vrshrn_n_s32 only supports shifts up to 16, we need // 17. so do a non-rounding shift of 16 first then follow // up with a rounding shift by 1. dct_pass(vshrn_n_s32, 16); { // pack and round uint8x8_t p0 = vqrshrun_n_s16(row0, 1); uint8x8_t p1 = vqrshrun_n_s16(row1, 1); uint8x8_t p2 = vqrshrun_n_s16(row2, 1); uint8x8_t p3 = vqrshrun_n_s16(row3, 1); uint8x8_t p4 = vqrshrun_n_s16(row4, 1); uint8x8_t p5 = vqrshrun_n_s16(row5, 1); uint8x8_t p6 = vqrshrun_n_s16(row6, 1); uint8x8_t p7 = vqrshrun_n_s16(row7, 1); // again, these can translate into one instruction, but often don't. #define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } #define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } #define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } // sadly can't use interleaved stores here since we only write // 8 bytes to each scan line! // 8x8 8-bit transpose pass 1 dct_trn8_8(p0, p1); dct_trn8_8(p2, p3); dct_trn8_8(p4, p5); dct_trn8_8(p6, p7); // pass 2 dct_trn8_16(p0, p2); dct_trn8_16(p1, p3); dct_trn8_16(p4, p6); dct_trn8_16(p5, p7); // pass 3 dct_trn8_32(p0, p4); dct_trn8_32(p1, p5); dct_trn8_32(p2, p6); dct_trn8_32(p3, p7); // store vst1_u8(out, p0); out += out_stride; vst1_u8(out, p1); out += out_stride; vst1_u8(out, p2); out += out_stride; vst1_u8(out, p3); out += out_stride; vst1_u8(out, p4); out += out_stride; vst1_u8(out, p5); out += out_stride; vst1_u8(out, p6); out += out_stride; vst1_u8(out, p7); #undef dct_trn8_8 #undef dct_trn8_16 #undef dct_trn8_32 } #undef dct_long_mul #undef dct_long_mac #undef dct_widen #undef dct_wadd #undef dct_wsub #undef dct_bfly32o #undef dct_pass } #endif // STBI_NEON #define STBI__MARKER_none 0xff // if there's a pending marker from the entropy stream, return that // otherwise, fetch from the stream and get a marker. if there's no // marker, return 0xff, which is never a valid marker value static stbi_uc stbi__get_marker(stbi__jpeg *j) { stbi_uc x; if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } x = stbi__get8(j->s); if (x != 0xff) return STBI__MARKER_none; while (x == 0xff) x = stbi__get8(j->s); return x; } // in each scan, we'll have scan_n components, and the order // of the components is specified by order[] #define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) // after a restart interval, stbi__jpeg_reset the entropy decoder and // the dc prediction static void stbi__jpeg_reset(stbi__jpeg *j) { j->code_bits = 0; j->code_buffer = 0; j->nomore = 0; j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = 0; j->marker = STBI__MARKER_none; j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; j->eob_run = 0; // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, // since we don't even allow 1<<30 pixels } static int stbi__parse_entropy_coded_data(stbi__jpeg *z) { stbi__jpeg_reset(z); if (!z->progressive) { if (z->scan_n == 1) { int i,j; STBI_SIMD_ALIGN(short, data[64]); int n = z->order[0]; // non-interleaved data, we just need to process one block at a time, // in trivial scanline order // number of blocks to do just depends on how many actual "pixels" this // component has, independent of interleaved MCU blocking and such int w = (z->img_comp[n].x+7) >> 3; int h = (z->img_comp[n].y+7) >> 3; for (j=0; j < h; ++j) { for (i=0; i < w; ++i) { int ha = z->img_comp[n].ha; if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); // every data block is an MCU, so countdown the restart interval if (--z->todo <= 0) { if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); // if it's NOT a restart, then just bail, so we get corrupt data // rather than no data if (!STBI__RESTART(z->marker)) return 1; stbi__jpeg_reset(z); } } } return 1; } else { // interleaved int i,j,k,x,y; STBI_SIMD_ALIGN(short, data[64]); for (j=0; j < z->img_mcu_y; ++j) { for (i=0; i < z->img_mcu_x; ++i) { // scan an interleaved mcu... process scan_n components in order for (k=0; k < z->scan_n; ++k) { int n = z->order[k]; // scan out an mcu's worth of this component; that's just determined // by the basic H and V specified for the component for (y=0; y < z->img_comp[n].v; ++y) { for (x=0; x < z->img_comp[n].h; ++x) { int x2 = (i*z->img_comp[n].h + x)*8; int y2 = (j*z->img_comp[n].v + y)*8; int ha = z->img_comp[n].ha; if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); } } } // after all interleaved components, that's an interleaved MCU, // so now count down the restart interval if (--z->todo <= 0) { if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); if (!STBI__RESTART(z->marker)) return 1; stbi__jpeg_reset(z); } } } return 1; } } else { if (z->scan_n == 1) { int i,j; int n = z->order[0]; // non-interleaved data, we just need to process one block at a time, // in trivial scanline order // number of blocks to do just depends on how many actual "pixels" this // component has, independent of interleaved MCU blocking and such int w = (z->img_comp[n].x+7) >> 3; int h = (z->img_comp[n].y+7) >> 3; for (j=0; j < h; ++j) { for (i=0; i < w; ++i) { short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); if (z->spec_start == 0) { if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) return 0; } else { int ha = z->img_comp[n].ha; if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) return 0; } // every data block is an MCU, so countdown the restart interval if (--z->todo <= 0) { if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); if (!STBI__RESTART(z->marker)) return 1; stbi__jpeg_reset(z); } } } return 1; } else { // interleaved int i,j,k,x,y; for (j=0; j < z->img_mcu_y; ++j) { for (i=0; i < z->img_mcu_x; ++i) { // scan an interleaved mcu... process scan_n components in order for (k=0; k < z->scan_n; ++k) { int n = z->order[k]; // scan out an mcu's worth of this component; that's just determined // by the basic H and V specified for the component for (y=0; y < z->img_comp[n].v; ++y) { for (x=0; x < z->img_comp[n].h; ++x) { int x2 = (i*z->img_comp[n].h + x); int y2 = (j*z->img_comp[n].v + y); short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) return 0; } } } // after all interleaved components, that's an interleaved MCU, // so now count down the restart interval if (--z->todo <= 0) { if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); if (!STBI__RESTART(z->marker)) return 1; stbi__jpeg_reset(z); } } } return 1; } } } static void stbi__jpeg_dequantize(short *data, stbi_uc *dequant) { int i; for (i=0; i < 64; ++i) data[i] *= dequant[i]; } static void stbi__jpeg_finish(stbi__jpeg *z) { if (z->progressive) { // dequantize and idct the data int i,j,n; for (n=0; n < z->s->img_n; ++n) { int w = (z->img_comp[n].x+7) >> 3; int h = (z->img_comp[n].y+7) >> 3; for (j=0; j < h; ++j) { for (i=0; i < w; ++i) { short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); } } } } } static int stbi__process_marker(stbi__jpeg *z, int m) { int L; switch (m) { case STBI__MARKER_none: // no marker found return stbi__err("expected marker","Corrupt JPEG"); case 0xDD: // DRI - specify restart interval if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); z->restart_interval = stbi__get16be(z->s); return 1; case 0xDB: // DQT - define quantization table L = stbi__get16be(z->s)-2; while (L > 0) { int q = stbi__get8(z->s); int p = q >> 4; int t = q & 15,i; if (p != 0) return stbi__err("bad DQT type","Corrupt JPEG"); if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); for (i=0; i < 64; ++i) z->dequant[t][stbi__jpeg_dezigzag[i]] = stbi__get8(z->s); L -= 65; } return L==0; case 0xC4: // DHT - define huffman table L = stbi__get16be(z->s)-2; while (L > 0) { stbi_uc *v; int sizes[16],i,n=0; int q = stbi__get8(z->s); int tc = q >> 4; int th = q & 15; if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); for (i=0; i < 16; ++i) { sizes[i] = stbi__get8(z->s); n += sizes[i]; } L -= 17; if (tc == 0) { if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; v = z->huff_dc[th].values; } else { if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; v = z->huff_ac[th].values; } for (i=0; i < n; ++i) v[i] = stbi__get8(z->s); if (tc != 0) stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); L -= n; } return L==0; } // check for comment block or APP blocks if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { stbi__skip(z->s, stbi__get16be(z->s)-2); return 1; } return 0; } // after we see SOS static int stbi__process_scan_header(stbi__jpeg *z) { int i; int Ls = stbi__get16be(z->s); z->scan_n = stbi__get8(z->s); if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); for (i=0; i < z->scan_n; ++i) { int id = stbi__get8(z->s), which; int q = stbi__get8(z->s); for (which = 0; which < z->s->img_n; ++which) if (z->img_comp[which].id == id) break; if (which == z->s->img_n) return 0; // no match z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); z->order[i] = which; } { int aa; z->spec_start = stbi__get8(z->s); z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 aa = stbi__get8(z->s); z->succ_high = (aa >> 4); z->succ_low = (aa & 15); if (z->progressive) { if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) return stbi__err("bad SOS", "Corrupt JPEG"); } else { if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); z->spec_end = 63; } } return 1; } static int stbi__process_frame_header(stbi__jpeg *z, int scan) { stbi__context *s = z->s; int Lf,p,i,q, h_max=1,v_max=1,c; Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires c = stbi__get8(s); if (c != 3 && c != 1) return stbi__err("bad component count","Corrupt JPEG"); // JFIF requires s->img_n = c; for (i=0; i < c; ++i) { z->img_comp[i].data = NULL; z->img_comp[i].linebuf = NULL; } if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); for (i=0; i < s->img_n; ++i) { z->img_comp[i].id = stbi__get8(s); if (z->img_comp[i].id != i+1) // JFIF requires if (z->img_comp[i].id != i) // some version of jpegtran outputs non-JFIF-compliant files! return stbi__err("bad component ID","Corrupt JPEG"); q = stbi__get8(s); z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); } if (scan != STBI__SCAN_load) return 1; if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); for (i=0; i < s->img_n; ++i) { if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; } // compute interleaved mcu info z->img_h_max = h_max; z->img_v_max = v_max; z->img_mcu_w = h_max * 8; z->img_mcu_h = v_max * 8; z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; for (i=0; i < s->img_n; ++i) { // number of effective pixels (e.g. for non-interleaved MCU) z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; // to simplify generation, we'll allocate enough memory to decode // the bogus oversized data from using interleaved MCUs and their // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't // discard the extra data until colorspace conversion z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; z->img_comp[i].raw_data = stbi__malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15); if (z->img_comp[i].raw_data == NULL) { for(--i; i >= 0; --i) { STBI_FREE(z->img_comp[i].raw_data); z->img_comp[i].raw_data = NULL; } return stbi__err("outofmem", "Out of memory"); } // align blocks for idct using mmx/sse z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); z->img_comp[i].linebuf = NULL; if (z->progressive) { z->img_comp[i].coeff_w = (z->img_comp[i].w2 + 7) >> 3; z->img_comp[i].coeff_h = (z->img_comp[i].h2 + 7) >> 3; z->img_comp[i].raw_coeff = STBI_MALLOC(z->img_comp[i].coeff_w * z->img_comp[i].coeff_h * 64 * sizeof(short) + 15); z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); } else { z->img_comp[i].coeff = 0; z->img_comp[i].raw_coeff = 0; } } return 1; } // use comparisons since in some cases we handle more than one case (e.g. SOF) #define stbi__DNL(x) ((x) == 0xdc) #define stbi__SOI(x) ((x) == 0xd8) #define stbi__EOI(x) ((x) == 0xd9) #define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) #define stbi__SOS(x) ((x) == 0xda) #define stbi__SOF_progressive(x) ((x) == 0xc2) static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) { int m; z->marker = STBI__MARKER_none; // initialize cached marker to empty m = stbi__get_marker(z); if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); if (scan == STBI__SCAN_type) return 1; m = stbi__get_marker(z); while (!stbi__SOF(m)) { if (!stbi__process_marker(z,m)) return 0; m = stbi__get_marker(z); while (m == STBI__MARKER_none) { // some files have extra padding after their blocks, so ok, we'll scan if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); m = stbi__get_marker(z); } } z->progressive = stbi__SOF_progressive(m); if (!stbi__process_frame_header(z, scan)) return 0; return 1; } // decode image to YCbCr format static int stbi__decode_jpeg_image(stbi__jpeg *j) { int m; for (m = 0; m < 4; m++) { j->img_comp[m].raw_data = NULL; j->img_comp[m].raw_coeff = NULL; } j->restart_interval = 0; if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; m = stbi__get_marker(j); while (!stbi__EOI(m)) { if (stbi__SOS(m)) { if (!stbi__process_scan_header(j)) return 0; if (!stbi__parse_entropy_coded_data(j)) return 0; if (j->marker == STBI__MARKER_none ) { // handle 0s at the end of image data from IP Kamera 9060 while (!stbi__at_eof(j->s)) { int x = stbi__get8(j->s); if (x == 255) { j->marker = stbi__get8(j->s); break; } else if (x != 0) { return stbi__err("junk before marker", "Corrupt JPEG"); } } // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 } } else { if (!stbi__process_marker(j, m)) return 0; } m = stbi__get_marker(j); } if (j->progressive) stbi__jpeg_finish(j); return 1; } // static jfif-centered resampling (across block boundaries) typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, int w, int hs); #define stbi__div4(x) ((stbi_uc) ((x) >> 2)) static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { STBI_NOTUSED(out); STBI_NOTUSED(in_far); STBI_NOTUSED(w); STBI_NOTUSED(hs); return in_near; } static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { // need to generate two samples vertically for every one in input int i; STBI_NOTUSED(hs); for (i=0; i < w; ++i) out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); return out; } static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { // need to generate two samples horizontally for every one in input int i; stbi_uc *input = in_near; if (w == 1) { // if only one sample, can't do any interpolation out[0] = out[1] = input[0]; return out; } out[0] = input[0]; out[1] = stbi__div4(input[0]*3 + input[1] + 2); for (i=1; i < w-1; ++i) { int n = 3*input[i]+2; out[i*2+0] = stbi__div4(n+input[i-1]); out[i*2+1] = stbi__div4(n+input[i+1]); } out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); out[i*2+1] = input[w-1]; STBI_NOTUSED(in_far); STBI_NOTUSED(hs); return out; } #define stbi__div16(x) ((stbi_uc) ((x) >> 4)) static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { // need to generate 2x2 samples for every one in input int i,t0,t1; if (w == 1) { out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); return out; } t1 = 3*in_near[0] + in_far[0]; out[0] = stbi__div4(t1+2); for (i=1; i < w; ++i) { t0 = t1; t1 = 3*in_near[i]+in_far[i]; out[i*2-1] = stbi__div16(3*t0 + t1 + 8); out[i*2 ] = stbi__div16(3*t1 + t0 + 8); } out[w*2-1] = stbi__div4(t1+2); STBI_NOTUSED(hs); return out; } #if defined(STBI_SSE2) || defined(STBI_NEON) static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { // need to generate 2x2 samples for every one in input int i=0,t0,t1; if (w == 1) { out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); return out; } t1 = 3*in_near[0] + in_far[0]; // process groups of 8 pixels for as long as we can. // note we can't handle the last pixel in a row in this loop // because we need to handle the filter boundary conditions. for (; i < ((w-1) & ~7); i += 8) { #if defined(STBI_SSE2) // load and perform the vertical filtering pass // this uses 3*x + y = 4*x + (y - x) __m128i zero = _mm_setzero_si128(); __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); __m128i farw = _mm_unpacklo_epi8(farb, zero); __m128i nearw = _mm_unpacklo_epi8(nearb, zero); __m128i diff = _mm_sub_epi16(farw, nearw); __m128i nears = _mm_slli_epi16(nearw, 2); __m128i curr = _mm_add_epi16(nears, diff); // current row // horizontal filter works the same based on shifted vers of current // row. "prev" is current row shifted right by 1 pixel; we need to // insert the previous pixel value (from t1). // "next" is current row shifted left by 1 pixel, with first pixel // of next block of 8 pixels added in. __m128i prv0 = _mm_slli_si128(curr, 2); __m128i nxt0 = _mm_srli_si128(curr, 2); __m128i prev = _mm_insert_epi16(prv0, t1, 0); __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); // horizontal filter, polyphase implementation since it's convenient: // even pixels = 3*cur + prev = cur*4 + (prev - cur) // odd pixels = 3*cur + next = cur*4 + (next - cur) // note the shared term. __m128i bias = _mm_set1_epi16(8); __m128i curs = _mm_slli_epi16(curr, 2); __m128i prvd = _mm_sub_epi16(prev, curr); __m128i nxtd = _mm_sub_epi16(next, curr); __m128i curb = _mm_add_epi16(curs, bias); __m128i even = _mm_add_epi16(prvd, curb); __m128i odd = _mm_add_epi16(nxtd, curb); // interleave even and odd pixels, then undo scaling. __m128i int0 = _mm_unpacklo_epi16(even, odd); __m128i int1 = _mm_unpackhi_epi16(even, odd); __m128i de0 = _mm_srli_epi16(int0, 4); __m128i de1 = _mm_srli_epi16(int1, 4); // pack and write output __m128i outv = _mm_packus_epi16(de0, de1); _mm_storeu_si128((__m128i *) (out + i*2), outv); #elif defined(STBI_NEON) // load and perform the vertical filtering pass // this uses 3*x + y = 4*x + (y - x) uint8x8_t farb = vld1_u8(in_far + i); uint8x8_t nearb = vld1_u8(in_near + i); int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); int16x8_t curr = vaddq_s16(nears, diff); // current row // horizontal filter works the same based on shifted vers of current // row. "prev" is current row shifted right by 1 pixel; we need to // insert the previous pixel value (from t1). // "next" is current row shifted left by 1 pixel, with first pixel // of next block of 8 pixels added in. int16x8_t prv0 = vextq_s16(curr, curr, 7); int16x8_t nxt0 = vextq_s16(curr, curr, 1); int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); // horizontal filter, polyphase implementation since it's convenient: // even pixels = 3*cur + prev = cur*4 + (prev - cur) // odd pixels = 3*cur + next = cur*4 + (next - cur) // note the shared term. int16x8_t curs = vshlq_n_s16(curr, 2); int16x8_t prvd = vsubq_s16(prev, curr); int16x8_t nxtd = vsubq_s16(next, curr); int16x8_t even = vaddq_s16(curs, prvd); int16x8_t odd = vaddq_s16(curs, nxtd); // undo scaling and round, then store with even/odd phases interleaved uint8x8x2_t o; o.val[0] = vqrshrun_n_s16(even, 4); o.val[1] = vqrshrun_n_s16(odd, 4); vst2_u8(out + i*2, o); #endif // "previous" value for next iter t1 = 3*in_near[i+7] + in_far[i+7]; } t0 = t1; t1 = 3*in_near[i] + in_far[i]; out[i*2] = stbi__div16(3*t1 + t0 + 8); for (++i; i < w; ++i) { t0 = t1; t1 = 3*in_near[i]+in_far[i]; out[i*2-1] = stbi__div16(3*t0 + t1 + 8); out[i*2 ] = stbi__div16(3*t1 + t0 + 8); } out[w*2-1] = stbi__div4(t1+2); STBI_NOTUSED(hs); return out; } #endif static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) { // resample with nearest-neighbor int i,j; STBI_NOTUSED(in_far); for (i=0; i < w; ++i) for (j=0; j < hs; ++j) out[i*hs+j] = in_near[i]; return out; } #ifdef STBI_JPEG_OLD // this is the same YCbCr-to-RGB calculation that stb_image has used // historically before the algorithm changes in 1.49 #define float2fixed(x) ((int) ((x) * 65536 + 0.5)) static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) { int i; for (i=0; i < count; ++i) { int y_fixed = (y[i] << 16) + 32768; // rounding int r,g,b; int cr = pcr[i] - 128; int cb = pcb[i] - 128; r = y_fixed + cr*float2fixed(1.40200f); g = y_fixed - cr*float2fixed(0.71414f) - cb*float2fixed(0.34414f); b = y_fixed + cb*float2fixed(1.77200f); r >>= 16; g >>= 16; b >>= 16; if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } out[0] = (stbi_uc)r; out[1] = (stbi_uc)g; out[2] = (stbi_uc)b; out[3] = 255; out += step; } } #else // this is a reduced-precision calculation of YCbCr-to-RGB introduced // to make sure the code produces the same results in both SIMD and scalar #define float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) { int i; for (i=0; i < count; ++i) { int y_fixed = (y[i] << 20) + (1<<19); // rounding int r,g,b; int cr = pcr[i] - 128; int cb = pcb[i] - 128; r = y_fixed + cr* float2fixed(1.40200f); g = y_fixed + (cr*-float2fixed(0.71414f)) + ((cb*-float2fixed(0.34414f)) & 0xffff0000); b = y_fixed + cb* float2fixed(1.77200f); r >>= 20; g >>= 20; b >>= 20; if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } out[0] = (stbi_uc)r; out[1] = (stbi_uc)g; out[2] = (stbi_uc)b; out[3] = 255; out += step; } } #endif #if defined(STBI_SSE2) || defined(STBI_NEON) static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) { int i = 0; #ifdef STBI_SSE2 // step == 3 is pretty ugly on the final interleave, and i'm not convinced // it's useful in practice (you wouldn't use it for textures, for example). // so just accelerate step == 4 case. if (step == 4) { // this is a fairly straightforward implementation and not super-optimized. __m128i signflip = _mm_set1_epi8(-0x80); __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); __m128i xw = _mm_set1_epi16(255); // alpha channel for (; i+7 < count; i += 8) { // load __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 // unpack to short (and left-shift cr, cb by 8) __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); // color transform __m128i yws = _mm_srli_epi16(yw, 4); __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); __m128i rws = _mm_add_epi16(cr0, yws); __m128i gwt = _mm_add_epi16(cb0, yws); __m128i bws = _mm_add_epi16(yws, cb1); __m128i gws = _mm_add_epi16(gwt, cr1); // descale __m128i rw = _mm_srai_epi16(rws, 4); __m128i bw = _mm_srai_epi16(bws, 4); __m128i gw = _mm_srai_epi16(gws, 4); // back to byte, set up for transpose __m128i brb = _mm_packus_epi16(rw, bw); __m128i gxb = _mm_packus_epi16(gw, xw); // transpose to interleave channels __m128i t0 = _mm_unpacklo_epi8(brb, gxb); __m128i t1 = _mm_unpackhi_epi8(brb, gxb); __m128i o0 = _mm_unpacklo_epi16(t0, t1); __m128i o1 = _mm_unpackhi_epi16(t0, t1); // store _mm_storeu_si128((__m128i *) (out + 0), o0); _mm_storeu_si128((__m128i *) (out + 16), o1); out += 32; } } #endif #ifdef STBI_NEON // in this version, step=3 support would be easy to add. but is there demand? if (step == 4) { // this is a fairly straightforward implementation and not super-optimized. uint8x8_t signflip = vdup_n_u8(0x80); int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); for (; i+7 < count; i += 8) { // load uint8x8_t y_bytes = vld1_u8(y + i); uint8x8_t cr_bytes = vld1_u8(pcr + i); uint8x8_t cb_bytes = vld1_u8(pcb + i); int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); // expand to s16 int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); int16x8_t crw = vshll_n_s8(cr_biased, 7); int16x8_t cbw = vshll_n_s8(cb_biased, 7); // color transform int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); int16x8_t rws = vaddq_s16(yws, cr0); int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); int16x8_t bws = vaddq_s16(yws, cb1); // undo scaling, round, convert to byte uint8x8x4_t o; o.val[0] = vqrshrun_n_s16(rws, 4); o.val[1] = vqrshrun_n_s16(gws, 4); o.val[2] = vqrshrun_n_s16(bws, 4); o.val[3] = vdup_n_u8(255); // store, interleaving r/g/b/a vst4_u8(out, o); out += 8*4; } } #endif for (; i < count; ++i) { int y_fixed = (y[i] << 20) + (1<<19); // rounding int r,g,b; int cr = pcr[i] - 128; int cb = pcb[i] - 128; r = y_fixed + cr* float2fixed(1.40200f); g = y_fixed + cr*-float2fixed(0.71414f) + ((cb*-float2fixed(0.34414f)) & 0xffff0000); b = y_fixed + cb* float2fixed(1.77200f); r >>= 20; g >>= 20; b >>= 20; if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } out[0] = (stbi_uc)r; out[1] = (stbi_uc)g; out[2] = (stbi_uc)b; out[3] = 255; out += step; } } #endif // set up the kernels static void stbi__setup_jpeg(stbi__jpeg *j) { j->idct_block_kernel = stbi__idct_block; j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; #ifdef STBI_SSE2 if (stbi__sse2_available()) { j->idct_block_kernel = stbi__idct_simd; #ifndef STBI_JPEG_OLD j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; #endif j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; } #endif #ifdef STBI_NEON j->idct_block_kernel = stbi__idct_simd; #ifndef STBI_JPEG_OLD j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; #endif j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; #endif } // clean up the temporary component buffers static void stbi__cleanup_jpeg(stbi__jpeg *j) { int i; for (i=0; i < j->s->img_n; ++i) { if (j->img_comp[i].raw_data) { STBI_FREE(j->img_comp[i].raw_data); j->img_comp[i].raw_data = NULL; j->img_comp[i].data = NULL; } if (j->img_comp[i].raw_coeff) { STBI_FREE(j->img_comp[i].raw_coeff); j->img_comp[i].raw_coeff = 0; j->img_comp[i].coeff = 0; } if (j->img_comp[i].linebuf) { STBI_FREE(j->img_comp[i].linebuf); j->img_comp[i].linebuf = NULL; } } } typedef struct { resample_row_func resample; stbi_uc *line0,*line1; int hs,vs; // expansion factor in each axis int w_lores; // horizontal pixels pre-expansion int ystep; // how far through vertical expansion we are int ypos; // which pre-expansion row we're on } stbi__resample; static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) { int n, decode_n; z->s->img_n = 0; // make stbi__cleanup_jpeg safe // validate req_comp if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); // load a jpeg image from whichever source, but leave in YCbCr format if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } // determine actual number of components to generate n = req_comp ? req_comp : z->s->img_n; if (z->s->img_n == 3 && n < 3) decode_n = 1; else decode_n = z->s->img_n; // resample and color-convert { int k; unsigned int i,j; stbi_uc *output; stbi_uc *coutput[4]; stbi__resample res_comp[4]; for (k=0; k < decode_n; ++k) { stbi__resample *r = &res_comp[k]; // allocate line buffer big enough for upsampling off the edges // with upsample factor of 4 z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } r->hs = z->img_h_max / z->img_comp[k].h; r->vs = z->img_v_max / z->img_comp[k].v; r->ystep = r->vs >> 1; r->w_lores = (z->s->img_x + r->hs-1) / r->hs; r->ypos = 0; r->line0 = r->line1 = z->img_comp[k].data; if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; else r->resample = stbi__resample_row_generic; } // can't error after this so, this is safe output = (stbi_uc *) stbi__malloc(n * z->s->img_x * z->s->img_y + 1); if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } // now go ahead and resample for (j=0; j < z->s->img_y; ++j) { stbi_uc *out = output + n * z->s->img_x * j; for (k=0; k < decode_n; ++k) { stbi__resample *r = &res_comp[k]; int y_bot = r->ystep >= (r->vs >> 1); coutput[k] = r->resample(z->img_comp[k].linebuf, y_bot ? r->line1 : r->line0, y_bot ? r->line0 : r->line1, r->w_lores, r->hs); if (++r->ystep >= r->vs) { r->ystep = 0; r->line0 = r->line1; if (++r->ypos < z->img_comp[k].y) r->line1 += z->img_comp[k].w2; } } if (n >= 3) { stbi_uc *y = coutput[0]; if (z->s->img_n == 3) { z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); } else for (i=0; i < z->s->img_x; ++i) { out[0] = out[1] = out[2] = y[i]; out[3] = 255; // not used if n==3 out += n; } } else { stbi_uc *y = coutput[0]; if (n == 1) for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; else for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; } } stbi__cleanup_jpeg(z); *out_x = z->s->img_x; *out_y = z->s->img_y; if (comp) *comp = z->s->img_n; // report original components, not output return output; } } static unsigned char *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { stbi__jpeg j; j.s = s; stbi__setup_jpeg(&j); return load_jpeg_image(&j, x,y,comp,req_comp); } static int stbi__jpeg_test(stbi__context *s) { int r; stbi__jpeg j; j.s = s; stbi__setup_jpeg(&j); r = stbi__decode_jpeg_header(&j, STBI__SCAN_type); stbi__rewind(s); return r; } static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) { if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { stbi__rewind( j->s ); return 0; } if (x) *x = j->s->img_x; if (y) *y = j->s->img_y; if (comp) *comp = j->s->img_n; return 1; } static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) { stbi__jpeg j; j.s = s; return stbi__jpeg_info_raw(&j, x, y, comp); } #endif // public domain zlib decode v0.2 Sean Barrett 2006-11-18 // simple implementation // - all input must be provided in an upfront buffer // - all output is written to a single output buffer (can malloc/realloc) // performance // - fast huffman #ifndef STBI_NO_ZLIB // fast-way is faster to check than jpeg huffman, but slow way is slower #define STBI__ZFAST_BITS 9 // accelerate all cases in default tables #define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) // zlib-style huffman encoding // (jpegs packs from left, zlib from right, so can't share code) typedef struct { stbi__uint16 fast[1 << STBI__ZFAST_BITS]; stbi__uint16 firstcode[16]; int maxcode[17]; stbi__uint16 firstsymbol[16]; stbi_uc size[288]; stbi__uint16 value[288]; } stbi__zhuffman; stbi_inline static int stbi__bitreverse16(int n) { n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); return n; } stbi_inline static int stbi__bit_reverse(int v, int bits) { STBI_ASSERT(bits <= 16); // to bit reverse n bits, reverse 16 and shift // e.g. 11 bits, bit reverse and shift away 5 return stbi__bitreverse16(v) >> (16-bits); } static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) { int i,k=0; int code, next_code[16], sizes[17]; // DEFLATE spec for generating codes memset(sizes, 0, sizeof(sizes)); memset(z->fast, 0, sizeof(z->fast)); for (i=0; i < num; ++i) ++sizes[sizelist[i]]; sizes[0] = 0; for (i=1; i < 16; ++i) if (sizes[i] > (1 << i)) return stbi__err("bad sizes", "Corrupt PNG"); code = 0; for (i=1; i < 16; ++i) { next_code[i] = code; z->firstcode[i] = (stbi__uint16) code; z->firstsymbol[i] = (stbi__uint16) k; code = (code + sizes[i]); if (sizes[i]) if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); z->maxcode[i] = code << (16-i); // preshift for inner loop code <<= 1; k += sizes[i]; } z->maxcode[16] = 0x10000; // sentinel for (i=0; i < num; ++i) { int s = sizelist[i]; if (s) { int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); z->size [c] = (stbi_uc ) s; z->value[c] = (stbi__uint16) i; if (s <= STBI__ZFAST_BITS) { int j = stbi__bit_reverse(next_code[s],s); while (j < (1 << STBI__ZFAST_BITS)) { z->fast[j] = fastv; j += (1 << s); } } ++next_code[s]; } } return 1; } // zlib-from-memory implementation for PNG reading // because PNG allows splitting the zlib stream arbitrarily, // and it's annoying structurally to have PNG call ZLIB call PNG, // we require PNG read all the IDATs and combine them into a single // memory buffer typedef struct { stbi_uc *zbuffer, *zbuffer_end; int num_bits; stbi__uint32 code_buffer; char *zout; char *zout_start; char *zout_end; int z_expandable; stbi__zhuffman z_length, z_distance; } stbi__zbuf; stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) { if (z->zbuffer >= z->zbuffer_end) return 0; return *z->zbuffer++; } static void stbi__fill_bits(stbi__zbuf *z) { do { STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; z->num_bits += 8; } while (z->num_bits <= 24); } stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) { unsigned int k; if (z->num_bits < n) stbi__fill_bits(z); k = z->code_buffer & ((1 << n) - 1); z->code_buffer >>= n; z->num_bits -= n; return k; } static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) { int b,s,k; // not resolved by fast table, so compute it the slow way // use jpeg approach, which requires MSbits at top k = stbi__bit_reverse(a->code_buffer, 16); for (s=STBI__ZFAST_BITS+1; ; ++s) if (k < z->maxcode[s]) break; if (s == 16) return -1; // invalid code! // code size is s, so: b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; STBI_ASSERT(z->size[b] == s); a->code_buffer >>= s; a->num_bits -= s; return z->value[b]; } stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) { int b,s; if (a->num_bits < 16) stbi__fill_bits(a); b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; if (b) { s = b >> 9; a->code_buffer >>= s; a->num_bits -= s; return b & 511; } return stbi__zhuffman_decode_slowpath(a, z); } static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes { char *q; int cur, limit; z->zout = zout; if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); cur = (int) (z->zout - z->zout_start); limit = (int) (z->zout_end - z->zout_start); while (cur + n > limit) limit *= 2; q = (char *) STBI_REALLOC(z->zout_start, limit); if (q == NULL) return stbi__err("outofmem", "Out of memory"); z->zout_start = q; z->zout = q + cur; z->zout_end = q + limit; return 1; } static int stbi__zlength_base[31] = { 3,4,5,6,7,8,9,10,11,13, 15,17,19,23,27,31,35,43,51,59, 67,83,99,115,131,163,195,227,258,0,0 }; static int stbi__zlength_extra[31]= { 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; static int stbi__zdist_extra[32] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; static int stbi__parse_huffman_block(stbi__zbuf *a) { char *zout = a->zout; for(;;) { int z = stbi__zhuffman_decode(a, &a->z_length); if (z < 256) { if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes if (zout >= a->zout_end) { if (!stbi__zexpand(a, zout, 1)) return 0; zout = a->zout; } *zout++ = (char) z; } else { stbi_uc *p; int len,dist; if (z == 256) { a->zout = zout; return 1; } z -= 257; len = stbi__zlength_base[z]; if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); z = stbi__zhuffman_decode(a, &a->z_distance); if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); dist = stbi__zdist_base[z]; if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); if (zout + len > a->zout_end) { if (!stbi__zexpand(a, zout, len)) return 0; zout = a->zout; } p = (stbi_uc *) (zout - dist); if (dist == 1) { // run of one byte; common in images. stbi_uc v = *p; if (len) { do *zout++ = v; while (--len); } } else { if (len) { do *zout++ = *p++; while (--len); } } } } } static int stbi__compute_huffman_codes(stbi__zbuf *a) { static stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; stbi__zhuffman z_codelength; stbi_uc lencodes[286+32+137];//padding for maximum single op stbi_uc codelength_sizes[19]; int i,n; int hlit = stbi__zreceive(a,5) + 257; int hdist = stbi__zreceive(a,5) + 1; int hclen = stbi__zreceive(a,4) + 4; memset(codelength_sizes, 0, sizeof(codelength_sizes)); for (i=0; i < hclen; ++i) { int s = stbi__zreceive(a,3); codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; } if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; n = 0; while (n < hlit + hdist) { int c = stbi__zhuffman_decode(a, &z_codelength); if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); if (c < 16) lencodes[n++] = (stbi_uc) c; else if (c == 16) { c = stbi__zreceive(a,2)+3; memset(lencodes+n, lencodes[n-1], c); n += c; } else if (c == 17) { c = stbi__zreceive(a,3)+3; memset(lencodes+n, 0, c); n += c; } else { STBI_ASSERT(c == 18); c = stbi__zreceive(a,7)+11; memset(lencodes+n, 0, c); n += c; } } if (n != hlit+hdist) return stbi__err("bad codelengths","Corrupt PNG"); if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; return 1; } static int stbi__parse_uncomperssed_block(stbi__zbuf *a) { stbi_uc header[4]; int len,nlen,k; if (a->num_bits & 7) stbi__zreceive(a, a->num_bits & 7); // discard // drain the bit-packed data into header k = 0; while (a->num_bits > 0) { header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check a->code_buffer >>= 8; a->num_bits -= 8; } STBI_ASSERT(a->num_bits == 0); // now fill header the normal way while (k < 4) header[k++] = stbi__zget8(a); len = header[1] * 256 + header[0]; nlen = header[3] * 256 + header[2]; if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); if (a->zout + len > a->zout_end) if (!stbi__zexpand(a, a->zout, len)) return 0; memcpy(a->zout, a->zbuffer, len); a->zbuffer += len; a->zout += len; return 1; } static int stbi__parse_zlib_header(stbi__zbuf *a) { int cmf = stbi__zget8(a); int cm = cmf & 15; /* int cinfo = cmf >> 4; */ int flg = stbi__zget8(a); if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png // window = 1 << (8 + cinfo)... but who cares, we fully buffer output return 1; } // @TODO: should statically initialize these for optimal thread safety static stbi_uc stbi__zdefault_length[288], stbi__zdefault_distance[32]; static void stbi__init_zdefaults(void) { int i; // use <= to match clearly with spec for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; } static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) { int final, type; if (parse_header) if (!stbi__parse_zlib_header(a)) return 0; a->num_bits = 0; a->code_buffer = 0; do { final = stbi__zreceive(a,1); type = stbi__zreceive(a,2); if (type == 0) { if (!stbi__parse_uncomperssed_block(a)) return 0; } else if (type == 3) { return 0; } else { if (type == 1) { // use fixed code lengths if (!stbi__zdefault_distance[31]) stbi__init_zdefaults(); if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; } else { if (!stbi__compute_huffman_codes(a)) return 0; } if (!stbi__parse_huffman_block(a)) return 0; } } while (!final); return 1; } static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) { a->zout_start = obuf; a->zout = obuf; a->zout_end = obuf + olen; a->z_expandable = exp; return stbi__parse_zlib(a, parse_header); } STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) { stbi__zbuf a; char *p = (char *) stbi__malloc(initial_size); if (p == NULL) return NULL; a.zbuffer = (stbi_uc *) buffer; a.zbuffer_end = (stbi_uc *) buffer + len; if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { if (outlen) *outlen = (int) (a.zout - a.zout_start); return a.zout_start; } else { STBI_FREE(a.zout_start); return NULL; } } STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) { return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); } STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) { stbi__zbuf a; char *p = (char *) stbi__malloc(initial_size); if (p == NULL) return NULL; a.zbuffer = (stbi_uc *) buffer; a.zbuffer_end = (stbi_uc *) buffer + len; if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { if (outlen) *outlen = (int) (a.zout - a.zout_start); return a.zout_start; } else { STBI_FREE(a.zout_start); return NULL; } } STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) { stbi__zbuf a; a.zbuffer = (stbi_uc *) ibuffer; a.zbuffer_end = (stbi_uc *) ibuffer + ilen; if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) return (int) (a.zout - a.zout_start); else return -1; } STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) { stbi__zbuf a; char *p = (char *) stbi__malloc(16384); if (p == NULL) return NULL; a.zbuffer = (stbi_uc *) buffer; a.zbuffer_end = (stbi_uc *) buffer+len; if (stbi__do_zlib(&a, p, 16384, 1, 0)) { if (outlen) *outlen = (int) (a.zout - a.zout_start); return a.zout_start; } else { STBI_FREE(a.zout_start); return NULL; } } STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) { stbi__zbuf a; a.zbuffer = (stbi_uc *) ibuffer; a.zbuffer_end = (stbi_uc *) ibuffer + ilen; if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) return (int) (a.zout - a.zout_start); else return -1; } #endif // public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 // simple implementation // - only 8-bit samples // - no CRC checking // - allocates lots of intermediate memory // - avoids problem of streaming data between subsystems // - avoids explicit window management // performance // - uses stb_zlib, a PD zlib implementation with fast huffman decoding #ifndef STBI_NO_PNG typedef struct { stbi__uint32 length; stbi__uint32 type; } stbi__pngchunk; static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) { stbi__pngchunk c; c.length = stbi__get32be(s); c.type = stbi__get32be(s); return c; } static int stbi__check_png_header(stbi__context *s) { static stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; int i; for (i=0; i < 8; ++i) if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); return 1; } typedef struct { stbi__context *s; stbi_uc *idata, *expanded, *out; } stbi__png; enum { STBI__F_none=0, STBI__F_sub=1, STBI__F_up=2, STBI__F_avg=3, STBI__F_paeth=4, // synthetic filters used for first scanline to avoid needing a dummy row of 0s STBI__F_avg_first, STBI__F_paeth_first }; static stbi_uc first_row_filter[5] = { STBI__F_none, STBI__F_sub, STBI__F_none, STBI__F_avg_first, STBI__F_paeth_first }; static int stbi__paeth(int a, int b, int c) { int p = a + b - c; int pa = abs(p-a); int pb = abs(p-b); int pc = abs(p-c); if (pa <= pb && pa <= pc) return a; if (pb <= pc) return b; return c; } static stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; // create the png data from post-deflated data static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) { stbi__context *s = a->s; stbi__uint32 i,j,stride = x*out_n; stbi__uint32 img_len, img_width_bytes; int k; int img_n = s->img_n; // copy it into a local for later STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); a->out = (stbi_uc *) stbi__malloc(x * y * out_n); // extra bytes to write off the end into if (!a->out) return stbi__err("outofmem", "Out of memory"); img_width_bytes = (((img_n * x * depth) + 7) >> 3); img_len = (img_width_bytes + 1) * y; if (s->img_x == x && s->img_y == y) { if (raw_len != img_len) return stbi__err("not enough pixels","Corrupt PNG"); } else { // interlaced: if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); } for (j=0; j < y; ++j) { stbi_uc *cur = a->out + stride*j; stbi_uc *prior = cur - stride; int filter = *raw++; int filter_bytes = img_n; int width = x; if (filter > 4) return stbi__err("invalid filter","Corrupt PNG"); if (depth < 8) { STBI_ASSERT(img_width_bytes <= x); cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place filter_bytes = 1; width = img_width_bytes; } // if first row, use special filter that doesn't sample previous row if (j == 0) filter = first_row_filter[filter]; // handle first byte explicitly for (k=0; k < filter_bytes; ++k) { switch (filter) { case STBI__F_none : cur[k] = raw[k]; break; case STBI__F_sub : cur[k] = raw[k]; break; case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; case STBI__F_avg_first : cur[k] = raw[k]; break; case STBI__F_paeth_first: cur[k] = raw[k]; break; } } if (depth == 8) { if (img_n != out_n) cur[img_n] = 255; // first pixel raw += img_n; cur += out_n; prior += out_n; } else { raw += 1; cur += 1; prior += 1; } // this is a little gross, so that we don't switch per-pixel or per-component if (depth < 8 || img_n == out_n) { int nk = (width - 1)*img_n; #define CASE(f) \ case f: \ for (k=0; k < nk; ++k) switch (filter) { // "none" filter turns into a memcpy here; make that explicit. case STBI__F_none: memcpy(cur, raw, nk); break; CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); break; CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); break; CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); break; CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); break; CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); break; } #undef CASE raw += nk; } else { STBI_ASSERT(img_n+1 == out_n); #define CASE(f) \ case f: \ for (i=x-1; i >= 1; --i, cur[img_n]=255,raw+=img_n,cur+=out_n,prior+=out_n) \ for (k=0; k < img_n; ++k) switch (filter) { CASE(STBI__F_none) cur[k] = raw[k]; break; CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k-out_n]); break; CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-out_n])>>1)); break; CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-out_n],prior[k],prior[k-out_n])); break; CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k-out_n] >> 1)); break; CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-out_n],0,0)); break; } #undef CASE } } // we make a separate pass to expand bits to pixels; for performance, // this could run two scanlines behind the above code, so it won't // intefere with filtering but will still be in the cache. if (depth < 8) { for (j=0; j < y; ++j) { stbi_uc *cur = a->out + stride*j; stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range // note that the final byte might overshoot and write more data than desired. // we can allocate enough data that this never writes out of memory, but it // could also overwrite the next scanline. can it overwrite non-empty data // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. // so we need to explicitly clamp the final ones if (depth == 4) { for (k=x*img_n; k >= 2; k-=2, ++in) { *cur++ = scale * ((*in >> 4) ); *cur++ = scale * ((*in ) & 0x0f); } if (k > 0) *cur++ = scale * ((*in >> 4) ); } else if (depth == 2) { for (k=x*img_n; k >= 4; k-=4, ++in) { *cur++ = scale * ((*in >> 6) ); *cur++ = scale * ((*in >> 4) & 0x03); *cur++ = scale * ((*in >> 2) & 0x03); *cur++ = scale * ((*in ) & 0x03); } if (k > 0) *cur++ = scale * ((*in >> 6) ); if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); } else if (depth == 1) { for (k=x*img_n; k >= 8; k-=8, ++in) { *cur++ = scale * ((*in >> 7) ); *cur++ = scale * ((*in >> 6) & 0x01); *cur++ = scale * ((*in >> 5) & 0x01); *cur++ = scale * ((*in >> 4) & 0x01); *cur++ = scale * ((*in >> 3) & 0x01); *cur++ = scale * ((*in >> 2) & 0x01); *cur++ = scale * ((*in >> 1) & 0x01); *cur++ = scale * ((*in ) & 0x01); } if (k > 0) *cur++ = scale * ((*in >> 7) ); if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); } if (img_n != out_n) { int q; // insert alpha = 255 cur = a->out + stride*j; if (img_n == 1) { for (q=x-1; q >= 0; --q) { cur[q*2+1] = 255; cur[q*2+0] = cur[q]; } } else { STBI_ASSERT(img_n == 3); for (q=x-1; q >= 0; --q) { cur[q*4+3] = 255; cur[q*4+2] = cur[q*3+2]; cur[q*4+1] = cur[q*3+1]; cur[q*4+0] = cur[q*3+0]; } } } } } return 1; } static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) { stbi_uc *final; int p; if (!interlaced) return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); // de-interlacing final = (stbi_uc *) stbi__malloc(a->s->img_x * a->s->img_y * out_n); for (p=0; p < 7; ++p) { int xorig[] = { 0,4,0,2,0,1,0 }; int yorig[] = { 0,0,4,0,2,0,1 }; int xspc[] = { 8,8,4,4,2,2,1 }; int yspc[] = { 8,8,8,4,4,2,2 }; int i,j,x,y; // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; if (x && y) { stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { STBI_FREE(final); return 0; } for (j=0; j < y; ++j) { for (i=0; i < x; ++i) { int out_y = j*yspc[p]+yorig[p]; int out_x = i*xspc[p]+xorig[p]; memcpy(final + out_y*a->s->img_x*out_n + out_x*out_n, a->out + (j*x+i)*out_n, out_n); } } STBI_FREE(a->out); image_data += img_len; image_data_len -= img_len; } } a->out = final; return 1; } static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) { stbi__context *s = z->s; stbi__uint32 i, pixel_count = s->img_x * s->img_y; stbi_uc *p = z->out; // compute color-based transparency, assuming we've // already got 255 as the alpha value in the output STBI_ASSERT(out_n == 2 || out_n == 4); if (out_n == 2) { for (i=0; i < pixel_count; ++i) { p[1] = (p[0] == tc[0] ? 0 : 255); p += 2; } } else { for (i=0; i < pixel_count; ++i) { if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) p[3] = 0; p += 4; } } return 1; } static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) { stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; stbi_uc *p, *temp_out, *orig = a->out; p = (stbi_uc *) stbi__malloc(pixel_count * pal_img_n); if (p == NULL) return stbi__err("outofmem", "Out of memory"); // between here and free(out) below, exitting would leak temp_out = p; if (pal_img_n == 3) { for (i=0; i < pixel_count; ++i) { int n = orig[i]*4; p[0] = palette[n ]; p[1] = palette[n+1]; p[2] = palette[n+2]; p += 3; } } else { for (i=0; i < pixel_count; ++i) { int n = orig[i]*4; p[0] = palette[n ]; p[1] = palette[n+1]; p[2] = palette[n+2]; p[3] = palette[n+3]; p += 4; } } STBI_FREE(a->out); a->out = temp_out; STBI_NOTUSED(len); return 1; } static int stbi__unpremultiply_on_load = 0; static int stbi__de_iphone_flag = 0; STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) { stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; } STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) { stbi__de_iphone_flag = flag_true_if_should_convert; } static void stbi__de_iphone(stbi__png *z) { stbi__context *s = z->s; stbi__uint32 i, pixel_count = s->img_x * s->img_y; stbi_uc *p = z->out; if (s->img_out_n == 3) { // convert bgr to rgb for (i=0; i < pixel_count; ++i) { stbi_uc t = p[0]; p[0] = p[2]; p[2] = t; p += 3; } } else { STBI_ASSERT(s->img_out_n == 4); if (stbi__unpremultiply_on_load) { // convert bgr to rgb and unpremultiply for (i=0; i < pixel_count; ++i) { stbi_uc a = p[3]; stbi_uc t = p[0]; if (a) { p[0] = p[2] * 255 / a; p[1] = p[1] * 255 / a; p[2] = t * 255 / a; } else { p[0] = p[2]; p[2] = t; } p += 4; } } else { // convert bgr to rgb for (i=0; i < pixel_count; ++i) { stbi_uc t = p[0]; p[0] = p[2]; p[2] = t; p += 4; } } } } #define STBI__PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) { stbi_uc palette[1024], pal_img_n=0; stbi_uc has_trans=0, tc[3]; stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; int first=1,k,interlace=0, color=0, depth=0, is_iphone=0; stbi__context *s = z->s; z->expanded = NULL; z->idata = NULL; z->out = NULL; if (!stbi__check_png_header(s)) return 0; if (scan == STBI__SCAN_type) return 1; for (;;) { stbi__pngchunk c = stbi__get_chunk_header(s); switch (c.type) { case STBI__PNG_TYPE('C','g','B','I'): is_iphone = 1; stbi__skip(s, c.length); break; case STBI__PNG_TYPE('I','H','D','R'): { int comp,filter; if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); first = 0; if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); depth = stbi__get8(s); if (depth != 1 && depth != 2 && depth != 4 && depth != 8) return stbi__err("1/2/4/8-bit only","PNG not supported: 1/2/4/8-bit only"); color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); if (!pal_img_n) { s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); if (scan == STBI__SCAN_header) return 1; } else { // if paletted, then pal_n is our final components, and // img_n is # components to decompress/filter. s->img_n = 1; if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); // if SCAN_header, have to scan to see if we have a tRNS } break; } case STBI__PNG_TYPE('P','L','T','E'): { if (first) return stbi__err("first not IHDR", "Corrupt PNG"); if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); pal_len = c.length / 3; if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); for (i=0; i < pal_len; ++i) { palette[i*4+0] = stbi__get8(s); palette[i*4+1] = stbi__get8(s); palette[i*4+2] = stbi__get8(s); palette[i*4+3] = 255; } break; } case STBI__PNG_TYPE('t','R','N','S'): { if (first) return stbi__err("first not IHDR", "Corrupt PNG"); if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); if (pal_img_n) { if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); pal_img_n = 4; for (i=0; i < c.length; ++i) palette[i*4+3] = stbi__get8(s); } else { if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); has_trans = 1; for (k=0; k < s->img_n; ++k) tc[k] = (stbi_uc) (stbi__get16be(s) & 255) * stbi__depth_scale_table[depth]; // non 8-bit images will be larger } break; } case STBI__PNG_TYPE('I','D','A','T'): { if (first) return stbi__err("first not IHDR", "Corrupt PNG"); if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } if ((int)(ioff + c.length) < (int)ioff) return 0; if (ioff + c.length > idata_limit) { stbi_uc *p; if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; while (ioff + c.length > idata_limit) idata_limit *= 2; p = (stbi_uc *) STBI_REALLOC(z->idata, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); z->idata = p; } if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); ioff += c.length; break; } case STBI__PNG_TYPE('I','E','N','D'): { stbi__uint32 raw_len, bpl; if (first) return stbi__err("first not IHDR", "Corrupt PNG"); if (scan != STBI__SCAN_load) return 1; if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); // initial guess for decoded data size to avoid unnecessary reallocs bpl = (s->img_x * depth + 7) / 8; // bytes per line, per component raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); if (z->expanded == NULL) return 0; // zlib should set error STBI_FREE(z->idata); z->idata = NULL; if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) s->img_out_n = s->img_n+1; else s->img_out_n = s->img_n; if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, depth, color, interlace)) return 0; if (has_trans) if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) stbi__de_iphone(z); if (pal_img_n) { // pal_img_n == 3 or 4 s->img_n = pal_img_n; // record the actual colors we had s->img_out_n = pal_img_n; if (req_comp >= 3) s->img_out_n = req_comp; if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) return 0; } STBI_FREE(z->expanded); z->expanded = NULL; return 1; } default: // if critical, fail if (first) return stbi__err("first not IHDR", "Corrupt PNG"); if ((c.type & (1 << 29)) == 0) { #ifndef STBI_NO_FAILURE_STRINGS // not threadsafe static char invalid_chunk[] = "XXXX PNG chunk not known"; invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); #endif return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); } stbi__skip(s, c.length); break; } // end of PNG chunk, read and skip CRC stbi__get32be(s); } } static unsigned char *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp) { unsigned char *result=NULL; if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { result = p->out; p->out = NULL; if (req_comp && req_comp != p->s->img_out_n) { result = stbi__convert_format(result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); p->s->img_out_n = req_comp; if (result == NULL) return result; } *x = p->s->img_x; *y = p->s->img_y; if (n) *n = p->s->img_out_n; } STBI_FREE(p->out); p->out = NULL; STBI_FREE(p->expanded); p->expanded = NULL; STBI_FREE(p->idata); p->idata = NULL; return result; } static unsigned char *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { stbi__png p; p.s = s; return stbi__do_png(&p, x,y,comp,req_comp); } static int stbi__png_test(stbi__context *s) { int r; r = stbi__check_png_header(s); stbi__rewind(s); return r; } static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) { if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { stbi__rewind( p->s ); return 0; } if (x) *x = p->s->img_x; if (y) *y = p->s->img_y; if (comp) *comp = p->s->img_n; return 1; } static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) { stbi__png p; p.s = s; return stbi__png_info_raw(&p, x, y, comp); } #endif // Microsoft/Windows BMP image #ifndef STBI_NO_BMP static int stbi__bmp_test_raw(stbi__context *s) { int r; int sz; if (stbi__get8(s) != 'B') return 0; if (stbi__get8(s) != 'M') return 0; stbi__get32le(s); // discard filesize stbi__get16le(s); // discard reserved stbi__get16le(s); // discard reserved stbi__get32le(s); // discard data offset sz = stbi__get32le(s); r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); return r; } static int stbi__bmp_test(stbi__context *s) { int r = stbi__bmp_test_raw(s); stbi__rewind(s); return r; } // returns 0..31 for the highest set bit static int stbi__high_bit(unsigned int z) { int n=0; if (z == 0) return -1; if (z >= 0x10000) n += 16, z >>= 16; if (z >= 0x00100) n += 8, z >>= 8; if (z >= 0x00010) n += 4, z >>= 4; if (z >= 0x00004) n += 2, z >>= 2; if (z >= 0x00002) n += 1, z >>= 1; return n; } static int stbi__bitcount(unsigned int a) { a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits a = (a + (a >> 8)); // max 16 per 8 bits a = (a + (a >> 16)); // max 32 per 8 bits return a & 0xff; } static int stbi__shiftsigned(int v, int shift, int bits) { int result; int z=0; if (shift < 0) v <<= -shift; else v >>= shift; result = v; z = bits; while (z < 8) { result += v >> z; z += bits; } return result; } static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { stbi_uc *out; unsigned int mr=0,mg=0,mb=0,ma=0, all_a=255; stbi_uc pal[256][4]; int psize=0,i,j,compress=0,width; int bpp, flip_vertically, pad, target, offset, hsz; if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); stbi__get32le(s); // discard filesize stbi__get16le(s); // discard reserved stbi__get16le(s); // discard reserved offset = stbi__get32le(s); hsz = stbi__get32le(s); if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); if (hsz == 12) { s->img_x = stbi__get16le(s); s->img_y = stbi__get16le(s); } else { s->img_x = stbi__get32le(s); s->img_y = stbi__get32le(s); } if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); bpp = stbi__get16le(s); if (bpp == 1) return stbi__errpuc("monochrome", "BMP type not supported: 1-bit"); flip_vertically = ((int) s->img_y) > 0; s->img_y = abs((int) s->img_y); if (hsz == 12) { if (bpp < 24) psize = (offset - 14 - 24) / 3; } else { compress = stbi__get32le(s); if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); stbi__get32le(s); // discard sizeof stbi__get32le(s); // discard hres stbi__get32le(s); // discard vres stbi__get32le(s); // discard colorsused stbi__get32le(s); // discard max important if (hsz == 40 || hsz == 56) { if (hsz == 56) { stbi__get32le(s); stbi__get32le(s); stbi__get32le(s); stbi__get32le(s); } if (bpp == 16 || bpp == 32) { mr = mg = mb = 0; if (compress == 0) { if (bpp == 32) { mr = 0xffu << 16; mg = 0xffu << 8; mb = 0xffu << 0; ma = 0xffu << 24; all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 } else { mr = 31u << 10; mg = 31u << 5; mb = 31u << 0; } } else if (compress == 3) { mr = stbi__get32le(s); mg = stbi__get32le(s); mb = stbi__get32le(s); // not documented, but generated by photoshop and handled by mspaint if (mr == mg && mg == mb) { // ?!?!? return stbi__errpuc("bad BMP", "bad BMP"); } } else return stbi__errpuc("bad BMP", "bad BMP"); } } else { STBI_ASSERT(hsz == 108 || hsz == 124); mr = stbi__get32le(s); mg = stbi__get32le(s); mb = stbi__get32le(s); ma = stbi__get32le(s); stbi__get32le(s); // discard color space for (i=0; i < 12; ++i) stbi__get32le(s); // discard color space parameters if (hsz == 124) { stbi__get32le(s); // discard rendering intent stbi__get32le(s); // discard offset of profile data stbi__get32le(s); // discard size of profile data stbi__get32le(s); // discard reserved } } if (bpp < 16) psize = (offset - 14 - hsz) >> 2; } s->img_n = ma ? 4 : 3; if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 target = req_comp; else target = s->img_n; // if they want monochrome, we'll post-convert out = (stbi_uc *) stbi__malloc(target * s->img_x * s->img_y); if (!out) return stbi__errpuc("outofmem", "Out of memory"); if (bpp < 16) { int z=0; if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } for (i=0; i < psize; ++i) { pal[i][2] = stbi__get8(s); pal[i][1] = stbi__get8(s); pal[i][0] = stbi__get8(s); if (hsz != 12) stbi__get8(s); pal[i][3] = 255; } stbi__skip(s, offset - 14 - hsz - psize * (hsz == 12 ? 3 : 4)); if (bpp == 4) width = (s->img_x + 1) >> 1; else if (bpp == 8) width = s->img_x; else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } pad = (-width)&3; for (j=0; j < (int) s->img_y; ++j) { for (i=0; i < (int) s->img_x; i += 2) { int v=stbi__get8(s),v2=0; if (bpp == 4) { v2 = v & 15; v >>= 4; } out[z++] = pal[v][0]; out[z++] = pal[v][1]; out[z++] = pal[v][2]; if (target == 4) out[z++] = 255; if (i+1 == (int) s->img_x) break; v = (bpp == 8) ? stbi__get8(s) : v2; out[z++] = pal[v][0]; out[z++] = pal[v][1]; out[z++] = pal[v][2]; if (target == 4) out[z++] = 255; } stbi__skip(s, pad); } } else { int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; int z = 0; int easy=0; stbi__skip(s, offset - 14 - hsz); if (bpp == 24) width = 3 * s->img_x; else if (bpp == 16) width = 2*s->img_x; else /* bpp = 32 and pad = 0 */ width=0; pad = (-width) & 3; if (bpp == 24) { easy = 1; } else if (bpp == 32) { if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) easy = 2; } if (!easy) { if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } // right shift amt to put high bit in position #7 rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); } for (j=0; j < (int) s->img_y; ++j) { if (easy) { for (i=0; i < (int) s->img_x; ++i) { unsigned char a; out[z+2] = stbi__get8(s); out[z+1] = stbi__get8(s); out[z+0] = stbi__get8(s); z += 3; a = (easy == 2 ? stbi__get8(s) : 255); all_a |= a; if (target == 4) out[z++] = a; } } else { for (i=0; i < (int) s->img_x; ++i) { stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); int a; out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); all_a |= a; if (target == 4) out[z++] = STBI__BYTECAST(a); } } stbi__skip(s, pad); } } // if alpha channel is all 0s, replace with all 255s if (target == 4 && all_a == 0) for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) out[i] = 255; if (flip_vertically) { stbi_uc t; for (j=0; j < (int) s->img_y>>1; ++j) { stbi_uc *p1 = out + j *s->img_x*target; stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; for (i=0; i < (int) s->img_x*target; ++i) { t = p1[i], p1[i] = p2[i], p2[i] = t; } } } if (req_comp && req_comp != target) { out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); if (out == NULL) return out; // stbi__convert_format frees input on failure } *x = s->img_x; *y = s->img_y; if (comp) *comp = s->img_n; return out; } #endif // Targa Truevision - TGA // by Jonathan Dummer #ifndef STBI_NO_TGA static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) { int tga_w, tga_h, tga_comp; int sz; stbi__get8(s); // discard Offset sz = stbi__get8(s); // color type if( sz > 1 ) { stbi__rewind(s); return 0; // only RGB or indexed allowed } sz = stbi__get8(s); // image type // only RGB or grey allowed, +/- RLE if ((sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11)) return 0; stbi__skip(s,9); tga_w = stbi__get16le(s); if( tga_w < 1 ) { stbi__rewind(s); return 0; // test width } tga_h = stbi__get16le(s); if( tga_h < 1 ) { stbi__rewind(s); return 0; // test height } sz = stbi__get8(s); // bits per pixel // only RGB or RGBA or grey allowed if ((sz != 8) && (sz != 16) && (sz != 24) && (sz != 32)) { stbi__rewind(s); return 0; } tga_comp = sz; if (x) *x = tga_w; if (y) *y = tga_h; if (comp) *comp = tga_comp / 8; return 1; // seems to have passed everything } static int stbi__tga_test(stbi__context *s) { int res; int sz; stbi__get8(s); // discard Offset sz = stbi__get8(s); // color type if ( sz > 1 ) return 0; // only RGB or indexed allowed sz = stbi__get8(s); // image type if ( (sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11) ) return 0; // only RGB or grey allowed, +/- RLE stbi__get16be(s); // discard palette start stbi__get16be(s); // discard palette length stbi__get8(s); // discard bits per palette color entry stbi__get16be(s); // discard x origin stbi__get16be(s); // discard y origin if ( stbi__get16be(s) < 1 ) return 0; // test width if ( stbi__get16be(s) < 1 ) return 0; // test height sz = stbi__get8(s); // bits per pixel if ( (sz != 8) && (sz != 16) && (sz != 24) && (sz != 32) ) res = 0; else res = 1; stbi__rewind(s); return res; } static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { // read in the TGA header stuff int tga_offset = stbi__get8(s); int tga_indexed = stbi__get8(s); int tga_image_type = stbi__get8(s); int tga_is_RLE = 0; int tga_palette_start = stbi__get16le(s); int tga_palette_len = stbi__get16le(s); int tga_palette_bits = stbi__get8(s); int tga_x_origin = stbi__get16le(s); int tga_y_origin = stbi__get16le(s); int tga_width = stbi__get16le(s); int tga_height = stbi__get16le(s); int tga_bits_per_pixel = stbi__get8(s); int tga_comp = tga_bits_per_pixel / 8; int tga_inverted = stbi__get8(s); // image data unsigned char *tga_data; unsigned char *tga_palette = NULL; int i, j; unsigned char raw_data[4]; int RLE_count = 0; int RLE_repeating = 0; int read_next_pixel = 1; // do a tiny bit of precessing if ( tga_image_type >= 8 ) { tga_image_type -= 8; tga_is_RLE = 1; } /* int tga_alpha_bits = tga_inverted & 15; */ tga_inverted = 1 - ((tga_inverted >> 5) & 1); // error check if ( //(tga_indexed) || (tga_width < 1) || (tga_height < 1) || (tga_image_type < 1) || (tga_image_type > 3) || ((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16) && (tga_bits_per_pixel != 24) && (tga_bits_per_pixel != 32)) ) { return NULL; // we don't report this as a bad TGA because we don't even know if it's TGA } // If I'm paletted, then I'll use the number of bits from the palette if ( tga_indexed ) { tga_comp = tga_palette_bits / 8; } // tga info *x = tga_width; *y = tga_height; if (comp) *comp = tga_comp; tga_data = (unsigned char*)stbi__malloc( (size_t)tga_width * tga_height * tga_comp ); if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); // skip to the data's starting position (offset usually = 0) stbi__skip(s, tga_offset ); if ( !tga_indexed && !tga_is_RLE) { for (i=0; i < tga_height; ++i) { int row = tga_inverted ? tga_height -i - 1 : i; stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; stbi__getn(s, tga_row, tga_width * tga_comp); } } else { // do I need to load a palette? if ( tga_indexed) { // any data to skip? (offset usually = 0) stbi__skip(s, tga_palette_start ); // load the palette tga_palette = (unsigned char*)stbi__malloc( tga_palette_len * tga_palette_bits / 8 ); if (!tga_palette) { STBI_FREE(tga_data); return stbi__errpuc("outofmem", "Out of memory"); } if (!stbi__getn(s, tga_palette, tga_palette_len * tga_palette_bits / 8 )) { STBI_FREE(tga_data); STBI_FREE(tga_palette); return stbi__errpuc("bad palette", "Corrupt TGA"); } } // load the data for (i=0; i < tga_width * tga_height; ++i) { // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? if ( tga_is_RLE ) { if ( RLE_count == 0 ) { // yep, get the next byte as a RLE command int RLE_cmd = stbi__get8(s); RLE_count = 1 + (RLE_cmd & 127); RLE_repeating = RLE_cmd >> 7; read_next_pixel = 1; } else if ( !RLE_repeating ) { read_next_pixel = 1; } } else { read_next_pixel = 1; } // OK, if I need to read a pixel, do it now if ( read_next_pixel ) { // load however much data we did have if ( tga_indexed ) { // read in 1 byte, then perform the lookup int pal_idx = stbi__get8(s); if ( pal_idx >= tga_palette_len ) { // invalid index pal_idx = 0; } pal_idx *= tga_bits_per_pixel / 8; for (j = 0; j*8 < tga_bits_per_pixel; ++j) { raw_data[j] = tga_palette[pal_idx+j]; } } else { // read in the data raw for (j = 0; j*8 < tga_bits_per_pixel; ++j) { raw_data[j] = stbi__get8(s); } } // clear the reading flag for the next pixel read_next_pixel = 0; } // end of reading a pixel // copy data for (j = 0; j < tga_comp; ++j) tga_data[i*tga_comp+j] = raw_data[j]; // in case we're in RLE mode, keep counting down --RLE_count; } // do I need to invert the image? if ( tga_inverted ) { for (j = 0; j*2 < tga_height; ++j) { int index1 = j * tga_width * tga_comp; int index2 = (tga_height - 1 - j) * tga_width * tga_comp; for (i = tga_width * tga_comp; i > 0; --i) { unsigned char temp = tga_data[index1]; tga_data[index1] = tga_data[index2]; tga_data[index2] = temp; ++index1; ++index2; } } } // clear my palette, if I had one if ( tga_palette != NULL ) { STBI_FREE( tga_palette ); } } // swap RGB if (tga_comp >= 3) { unsigned char* tga_pixel = tga_data; for (i=0; i < tga_width * tga_height; ++i) { unsigned char temp = tga_pixel[0]; tga_pixel[0] = tga_pixel[2]; tga_pixel[2] = temp; tga_pixel += tga_comp; } } // convert to target component count if (req_comp && req_comp != tga_comp) tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); // the things I do to get rid of an error message, and yet keep // Microsoft's C compilers happy... [8^( tga_palette_start = tga_palette_len = tga_palette_bits = tga_x_origin = tga_y_origin = 0; // OK, done return tga_data; } #endif // ************************************************************************************************* // Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB #ifndef STBI_NO_PSD static int stbi__psd_test(stbi__context *s) { int r = (stbi__get32be(s) == 0x38425053); stbi__rewind(s); return r; } static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { int pixelCount; int channelCount, compression; int channel, i, count, len; int bitdepth; int w,h; stbi_uc *out; // Check identifier if (stbi__get32be(s) != 0x38425053) // "8BPS" return stbi__errpuc("not PSD", "Corrupt PSD image"); // Check file type version. if (stbi__get16be(s) != 1) return stbi__errpuc("wrong version", "Unsupported version of PSD image"); // Skip 6 reserved bytes. stbi__skip(s, 6 ); // Read the number of channels (R, G, B, A, etc). channelCount = stbi__get16be(s); if (channelCount < 0 || channelCount > 16) return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); // Read the rows and columns of the image. h = stbi__get32be(s); w = stbi__get32be(s); // Make sure the depth is 8 bits. bitdepth = stbi__get16be(s); if (bitdepth != 8 && bitdepth != 16) return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); // Make sure the color mode is RGB. // Valid options are: // 0: Bitmap // 1: Grayscale // 2: Indexed color // 3: RGB color // 4: CMYK color // 7: Multichannel // 8: Duotone // 9: Lab color if (stbi__get16be(s) != 3) return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) stbi__skip(s,stbi__get32be(s) ); // Skip the image resources. (resolution, pen tool paths, etc) stbi__skip(s, stbi__get32be(s) ); // Skip the reserved data. stbi__skip(s, stbi__get32be(s) ); // Find out if the data is compressed. // Known values: // 0: no compression // 1: RLE compressed compression = stbi__get16be(s); if (compression > 1) return stbi__errpuc("bad compression", "PSD has an unknown compression format"); // Create the destination image. out = (stbi_uc *) stbi__malloc(4 * w*h); if (!out) return stbi__errpuc("outofmem", "Out of memory"); pixelCount = w*h; // Initialize the data to zero. //memset( out, 0, pixelCount * 4 ); // Finally, the image data. if (compression) { // RLE as used by .PSD and .TIFF // Loop until you get the number of unpacked bytes you are expecting: // Read the next source byte into n. // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. // Else if n is 128, noop. // Endloop // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, // which we're going to just skip. stbi__skip(s, h * channelCount * 2 ); // Read the RLE data by channel. for (channel = 0; channel < 4; channel++) { stbi_uc *p; p = out+channel; if (channel >= channelCount) { // Fill this channel with default data. for (i = 0; i < pixelCount; i++, p += 4) *p = (channel == 3 ? 255 : 0); } else { // Read the RLE data. count = 0; while (count < pixelCount) { len = stbi__get8(s); if (len == 128) { // No-op. } else if (len < 128) { // Copy next len+1 bytes literally. len++; count += len; while (len) { *p = stbi__get8(s); p += 4; len--; } } else if (len > 128) { stbi_uc val; // Next -len+1 bytes in the dest are replicated from next source byte. // (Interpret len as a negative 8-bit int.) len ^= 0x0FF; len += 2; val = stbi__get8(s); count += len; while (len) { *p = val; p += 4; len--; } } } } } } else { // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) // where each channel consists of an 8-bit value for each pixel in the image. // Read the data by channel. for (channel = 0; channel < 4; channel++) { stbi_uc *p; p = out + channel; if (channel >= channelCount) { // Fill this channel with default data. stbi_uc val = channel == 3 ? 255 : 0; for (i = 0; i < pixelCount; i++, p += 4) *p = val; } else { // Read the data. if (bitdepth == 16) { for (i = 0; i < pixelCount; i++, p += 4) *p = (stbi_uc) (stbi__get16be(s) >> 8); } else { for (i = 0; i < pixelCount; i++, p += 4) *p = stbi__get8(s); } } } } if (req_comp && req_comp != 4) { out = stbi__convert_format(out, 4, req_comp, w, h); if (out == NULL) return out; // stbi__convert_format frees input on failure } if (comp) *comp = 4; *y = h; *x = w; return out; } #endif // ************************************************************************************************* // Softimage PIC loader // by Tom Seddon // // See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format // See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ #ifndef STBI_NO_PIC static int stbi__pic_is4(stbi__context *s,const char *str) { int i; for (i=0; i<4; ++i) if (stbi__get8(s) != (stbi_uc)str[i]) return 0; return 1; } static int stbi__pic_test_core(stbi__context *s) { int i; if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) return 0; for(i=0;i<84;++i) stbi__get8(s); if (!stbi__pic_is4(s,"PICT")) return 0; return 1; } typedef struct { stbi_uc size,type,channel; } stbi__pic_packet; static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) { int mask=0x80, i; for (i=0; i<4; ++i, mask>>=1) { if (channel & mask) { if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); dest[i]=stbi__get8(s); } } return dest; } static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) { int mask=0x80,i; for (i=0;i<4; ++i, mask>>=1) if (channel&mask) dest[i]=src[i]; } static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) { int act_comp=0,num_packets=0,y,chained; stbi__pic_packet packets[10]; // this will (should...) cater for even some bizarre stuff like having data // for the same channel in multiple packets. do { stbi__pic_packet *packet; if (num_packets==sizeof(packets)/sizeof(packets[0])) return stbi__errpuc("bad format","too many packets"); packet = &packets[num_packets++]; chained = stbi__get8(s); packet->size = stbi__get8(s); packet->type = stbi__get8(s); packet->channel = stbi__get8(s); act_comp |= packet->channel; if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); } while (chained); *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? for(y=0; ytype) { default: return stbi__errpuc("bad format","packet has bad compression type"); case 0: {//uncompressed int x; for(x=0;xchannel,dest)) return 0; break; } case 1://Pure RLE { int left=width, i; while (left>0) { stbi_uc count,value[4]; count=stbi__get8(s); if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); if (count > left) count = (stbi_uc) left; if (!stbi__readval(s,packet->channel,value)) return 0; for(i=0; ichannel,dest,value); left -= count; } } break; case 2: {//Mixed RLE int left=width; while (left>0) { int count = stbi__get8(s), i; if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); if (count >= 128) { // Repeated stbi_uc value[4]; if (count==128) count = stbi__get16be(s); else count -= 127; if (count > left) return stbi__errpuc("bad file","scanline overrun"); if (!stbi__readval(s,packet->channel,value)) return 0; for(i=0;ichannel,dest,value); } else { // Raw ++count; if (count>left) return stbi__errpuc("bad file","scanline overrun"); for(i=0;ichannel,dest)) return 0; } left-=count; } break; } } } } return result; } static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp) { stbi_uc *result; int i, x,y; for (i=0; i<92; ++i) stbi__get8(s); x = stbi__get16be(s); y = stbi__get16be(s); if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to decode"); stbi__get32be(s); //skip `ratio' stbi__get16be(s); //skip `fields' stbi__get16be(s); //skip `pad' // intermediate buffer is RGBA result = (stbi_uc *) stbi__malloc(x*y*4); memset(result, 0xff, x*y*4); if (!stbi__pic_load_core(s,x,y,comp, result)) { STBI_FREE(result); result=0; } *px = x; *py = y; if (req_comp == 0) req_comp = *comp; result=stbi__convert_format(result,4,req_comp,x,y); return result; } static int stbi__pic_test(stbi__context *s) { int r = stbi__pic_test_core(s); stbi__rewind(s); return r; } #endif // ************************************************************************************************* // GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb #ifndef STBI_NO_GIF typedef struct { stbi__int16 prefix; stbi_uc first; stbi_uc suffix; } stbi__gif_lzw; typedef struct { int w,h; stbi_uc *out, *old_out; // output buffer (always 4 components) int flags, bgindex, ratio, transparent, eflags, delay; stbi_uc pal[256][4]; stbi_uc lpal[256][4]; stbi__gif_lzw codes[4096]; stbi_uc *color_table; int parse, step; int lflags; int start_x, start_y; int max_x, max_y; int cur_x, cur_y; int line_size; } stbi__gif; static int stbi__gif_test_raw(stbi__context *s) { int sz; if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; sz = stbi__get8(s); if (sz != '9' && sz != '7') return 0; if (stbi__get8(s) != 'a') return 0; return 1; } static int stbi__gif_test(stbi__context *s) { int r = stbi__gif_test_raw(s); stbi__rewind(s); return r; } static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) { int i; for (i=0; i < num_entries; ++i) { pal[i][2] = stbi__get8(s); pal[i][1] = stbi__get8(s); pal[i][0] = stbi__get8(s); pal[i][3] = transp == i ? 0 : 255; } } static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) { stbi_uc version; if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return stbi__err("not GIF", "Corrupt GIF"); version = stbi__get8(s); if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); stbi__g_failure_reason = ""; g->w = stbi__get16le(s); g->h = stbi__get16le(s); g->flags = stbi__get8(s); g->bgindex = stbi__get8(s); g->ratio = stbi__get8(s); g->transparent = -1; if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments if (is_info) return 1; if (g->flags & 0x80) stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); return 1; } static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) { stbi__gif g; if (!stbi__gif_header(s, &g, comp, 1)) { stbi__rewind( s ); return 0; } if (x) *x = g.w; if (y) *y = g.h; return 1; } static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) { stbi_uc *p, *c; // recurse to decode the prefixes, since the linked-list is backwards, // and working backwards through an interleaved image would be nasty if (g->codes[code].prefix >= 0) stbi__out_gif_code(g, g->codes[code].prefix); if (g->cur_y >= g->max_y) return; p = &g->out[g->cur_x + g->cur_y]; c = &g->color_table[g->codes[code].suffix * 4]; if (c[3] >= 128) { p[0] = c[2]; p[1] = c[1]; p[2] = c[0]; p[3] = c[3]; } g->cur_x += 4; if (g->cur_x >= g->max_x) { g->cur_x = g->start_x; g->cur_y += g->step; while (g->cur_y >= g->max_y && g->parse > 0) { g->step = (1 << g->parse) * g->line_size; g->cur_y = g->start_y + (g->step >> 1); --g->parse; } } } static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) { stbi_uc lzw_cs; stbi__int32 len, init_code; stbi__uint32 first; stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; stbi__gif_lzw *p; lzw_cs = stbi__get8(s); if (lzw_cs > 12) return NULL; clear = 1 << lzw_cs; first = 1; codesize = lzw_cs + 1; codemask = (1 << codesize) - 1; bits = 0; valid_bits = 0; for (init_code = 0; init_code < clear; init_code++) { g->codes[init_code].prefix = -1; g->codes[init_code].first = (stbi_uc) init_code; g->codes[init_code].suffix = (stbi_uc) init_code; } // support no starting clear code avail = clear+2; oldcode = -1; len = 0; for(;;) { if (valid_bits < codesize) { if (len == 0) { len = stbi__get8(s); // start new block if (len == 0) return g->out; } --len; bits |= (stbi__int32) stbi__get8(s) << valid_bits; valid_bits += 8; } else { stbi__int32 code = bits & codemask; bits >>= codesize; valid_bits -= codesize; // @OPTIMIZE: is there some way we can accelerate the non-clear path? if (code == clear) { // clear code codesize = lzw_cs + 1; codemask = (1 << codesize) - 1; avail = clear + 2; oldcode = -1; first = 0; } else if (code == clear + 1) { // end of stream code stbi__skip(s, len); while ((len = stbi__get8(s)) > 0) stbi__skip(s,len); return g->out; } else if (code <= avail) { if (first) return stbi__errpuc("no clear code", "Corrupt GIF"); if (oldcode >= 0) { p = &g->codes[avail++]; if (avail > 4096) return stbi__errpuc("too many codes", "Corrupt GIF"); p->prefix = (stbi__int16) oldcode; p->first = g->codes[oldcode].first; p->suffix = (code == avail) ? p->first : g->codes[code].first; } else if (code == avail) return stbi__errpuc("illegal code in raster", "Corrupt GIF"); stbi__out_gif_code(g, (stbi__uint16) code); if ((avail & codemask) == 0 && avail <= 0x0FFF) { codesize++; codemask = (1 << codesize) - 1; } oldcode = code; } else { return stbi__errpuc("illegal code in raster", "Corrupt GIF"); } } } } static void stbi__fill_gif_background(stbi__gif *g, int x0, int y0, int x1, int y1) { int x, y; stbi_uc *c = g->pal[g->bgindex]; for (y = y0; y < y1; y += 4 * g->w) { for (x = x0; x < x1; x += 4) { stbi_uc *p = &g->out[y + x]; p[0] = c[2]; p[1] = c[1]; p[2] = c[0]; p[3] = 0; } } } // this function is designed to support animated gifs, although stb_image doesn't support it static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp) { int i; stbi_uc *prev_out = 0; if (g->out == 0 && !stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header prev_out = g->out; g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); switch ((g->eflags & 0x1C) >> 2) { case 0: // unspecified (also always used on 1st frame) stbi__fill_gif_background(g, 0, 0, 4 * g->w, 4 * g->w * g->h); break; case 1: // do not dispose if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); g->old_out = prev_out; break; case 2: // dispose to background if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); stbi__fill_gif_background(g, g->start_x, g->start_y, g->max_x, g->max_y); break; case 3: // dispose to previous if (g->old_out) { for (i = g->start_y; i < g->max_y; i += 4 * g->w) memcpy(&g->out[i + g->start_x], &g->old_out[i + g->start_x], g->max_x - g->start_x); } break; } for (;;) { switch (stbi__get8(s)) { case 0x2C: /* Image Descriptor */ { int prev_trans = -1; stbi__int32 x, y, w, h; stbi_uc *o; x = stbi__get16le(s); y = stbi__get16le(s); w = stbi__get16le(s); h = stbi__get16le(s); if (((x + w) > (g->w)) || ((y + h) > (g->h))) return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); g->line_size = g->w * 4; g->start_x = x * 4; g->start_y = y * g->line_size; g->max_x = g->start_x + w * 4; g->max_y = g->start_y + h * g->line_size; g->cur_x = g->start_x; g->cur_y = g->start_y; g->lflags = stbi__get8(s); if (g->lflags & 0x40) { g->step = 8 * g->line_size; // first interlaced spacing g->parse = 3; } else { g->step = g->line_size; g->parse = 0; } if (g->lflags & 0x80) { stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); g->color_table = (stbi_uc *) g->lpal; } else if (g->flags & 0x80) { if (g->transparent >= 0 && (g->eflags & 0x01)) { prev_trans = g->pal[g->transparent][3]; g->pal[g->transparent][3] = 0; } g->color_table = (stbi_uc *) g->pal; } else return stbi__errpuc("missing color table", "Corrupt GIF"); o = stbi__process_gif_raster(s, g); if (o == NULL) return NULL; if (prev_trans != -1) g->pal[g->transparent][3] = (stbi_uc) prev_trans; return o; } case 0x21: // Comment Extension. { int len; if (stbi__get8(s) == 0xF9) { // Graphic Control Extension. len = stbi__get8(s); if (len == 4) { g->eflags = stbi__get8(s); g->delay = stbi__get16le(s); g->transparent = stbi__get8(s); } else { stbi__skip(s, len); break; } } while ((len = stbi__get8(s)) != 0) stbi__skip(s, len); break; } case 0x3B: // gif stream termination code return (stbi_uc *) s; // using '1' causes warning on some compilers default: return stbi__errpuc("unknown code", "Corrupt GIF"); } } STBI_NOTUSED(req_comp); } static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { stbi_uc *u = 0; stbi__gif g; memset(&g, 0, sizeof(g)); u = stbi__gif_load_next(s, &g, comp, req_comp); if (u == (stbi_uc *) s) u = 0; // end of animated gif marker if (u) { *x = g.w; *y = g.h; if (req_comp && req_comp != 4) u = stbi__convert_format(u, 4, req_comp, g.w, g.h); } else if (g.out) STBI_FREE(g.out); return u; } static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) { return stbi__gif_info_raw(s,x,y,comp); } #endif // ************************************************************************************************* // Radiance RGBE HDR loader // originally by Nicolas Schulz #ifndef STBI_NO_HDR static int stbi__hdr_test_core(stbi__context *s) { const char *signature = "#?RADIANCE\n"; int i; for (i=0; signature[i]; ++i) if (stbi__get8(s) != signature[i]) return 0; return 1; } static int stbi__hdr_test(stbi__context* s) { int r = stbi__hdr_test_core(s); stbi__rewind(s); return r; } #define STBI__HDR_BUFLEN 1024 static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) { int len=0; char c = '\0'; c = (char) stbi__get8(z); while (!stbi__at_eof(z) && c != '\n') { buffer[len++] = c; if (len == STBI__HDR_BUFLEN-1) { // flush to end of line while (!stbi__at_eof(z) && stbi__get8(z) != '\n') ; break; } c = (char) stbi__get8(z); } buffer[len] = 0; return buffer; } static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) { if ( input[3] != 0 ) { float f1; // Exponent f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); if (req_comp <= 2) output[0] = (input[0] + input[1] + input[2]) * f1 / 3; else { output[0] = input[0] * f1; output[1] = input[1] * f1; output[2] = input[2] * f1; } if (req_comp == 2) output[1] = 1; if (req_comp == 4) output[3] = 1; } else { switch (req_comp) { case 4: output[3] = 1; /* fallthrough */ case 3: output[0] = output[1] = output[2] = 0; break; case 2: output[1] = 1; /* fallthrough */ case 1: output[0] = 0; break; } } } static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { char buffer[STBI__HDR_BUFLEN]; char *token; int valid = 0; int width, height; stbi_uc *scanline; float *hdr_data; int len; unsigned char count, value; int i, j, k, c1,c2, z; // Check identifier if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) return stbi__errpf("not HDR", "Corrupt HDR image"); // Parse header for(;;) { token = stbi__hdr_gettoken(s,buffer); if (token[0] == 0) break; if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; } if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); // Parse width and height // can't use sscanf() if we're not using stdio! token = stbi__hdr_gettoken(s,buffer); if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); token += 3; height = (int) strtol(token, &token, 10); while (*token == ' ') ++token; if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); token += 3; width = (int) strtol(token, NULL, 10); *x = width; *y = height; if (comp) *comp = 3; if (req_comp == 0) req_comp = 3; // Read data hdr_data = (float *) stbi__malloc(height * width * req_comp * sizeof(float)); // Load image data // image data is stored as some number of sca if ( width < 8 || width >= 32768) { // Read flat data for (j=0; j < height; ++j) { for (i=0; i < width; ++i) { stbi_uc rgbe[4]; main_decode_loop: stbi__getn(s, rgbe, 4); stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); } } } else { // Read RLE-encoded data scanline = NULL; for (j = 0; j < height; ++j) { c1 = stbi__get8(s); c2 = stbi__get8(s); len = stbi__get8(s); if (c1 != 2 || c2 != 2 || (len & 0x80)) { // not run-length encoded, so we have to actually use THIS data as a decoded // pixel (note this can't be a valid pixel--one of RGB must be >= 128) stbi_uc rgbe[4]; rgbe[0] = (stbi_uc) c1; rgbe[1] = (stbi_uc) c2; rgbe[2] = (stbi_uc) len; rgbe[3] = (stbi_uc) stbi__get8(s); stbi__hdr_convert(hdr_data, rgbe, req_comp); i = 1; j = 0; STBI_FREE(scanline); goto main_decode_loop; // yes, this makes no sense } len <<= 8; len |= stbi__get8(s); if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } if (scanline == NULL) scanline = (stbi_uc *) stbi__malloc(width * 4); for (k = 0; k < 4; ++k) { i = 0; while (i < width) { count = stbi__get8(s); if (count > 128) { // Run value = stbi__get8(s); count -= 128; for (z = 0; z < count; ++z) scanline[i++ * 4 + k] = value; } else { // Dump for (z = 0; z < count; ++z) scanline[i++ * 4 + k] = stbi__get8(s); } } } for (i=0; i < width; ++i) stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); } STBI_FREE(scanline); } return hdr_data; } static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) { char buffer[STBI__HDR_BUFLEN]; char *token; int valid = 0; if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) { stbi__rewind( s ); return 0; } for(;;) { token = stbi__hdr_gettoken(s,buffer); if (token[0] == 0) break; if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; } if (!valid) { stbi__rewind( s ); return 0; } token = stbi__hdr_gettoken(s,buffer); if (strncmp(token, "-Y ", 3)) { stbi__rewind( s ); return 0; } token += 3; *y = (int) strtol(token, &token, 10); while (*token == ' ') ++token; if (strncmp(token, "+X ", 3)) { stbi__rewind( s ); return 0; } token += 3; *x = (int) strtol(token, NULL, 10); *comp = 3; return 1; } #endif // STBI_NO_HDR #ifndef STBI_NO_BMP static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) { int hsz; if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') { stbi__rewind( s ); return 0; } stbi__skip(s,12); hsz = stbi__get32le(s); if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) { stbi__rewind( s ); return 0; } if (hsz == 12) { *x = stbi__get16le(s); *y = stbi__get16le(s); } else { *x = stbi__get32le(s); *y = stbi__get32le(s); } if (stbi__get16le(s) != 1) { stbi__rewind( s ); return 0; } *comp = stbi__get16le(s) / 8; return 1; } #endif #ifndef STBI_NO_PSD static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) { int channelCount; if (stbi__get32be(s) != 0x38425053) { stbi__rewind( s ); return 0; } if (stbi__get16be(s) != 1) { stbi__rewind( s ); return 0; } stbi__skip(s, 6); channelCount = stbi__get16be(s); if (channelCount < 0 || channelCount > 16) { stbi__rewind( s ); return 0; } *y = stbi__get32be(s); *x = stbi__get32be(s); if (stbi__get16be(s) != 8) { stbi__rewind( s ); return 0; } if (stbi__get16be(s) != 3) { stbi__rewind( s ); return 0; } *comp = 4; return 1; } #endif #ifndef STBI_NO_PIC static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) { int act_comp=0,num_packets=0,chained; stbi__pic_packet packets[10]; if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { stbi__rewind(s); return 0; } stbi__skip(s, 88); *x = stbi__get16be(s); *y = stbi__get16be(s); if (stbi__at_eof(s)) { stbi__rewind( s); return 0; } if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { stbi__rewind( s ); return 0; } stbi__skip(s, 8); do { stbi__pic_packet *packet; if (num_packets==sizeof(packets)/sizeof(packets[0])) return 0; packet = &packets[num_packets++]; chained = stbi__get8(s); packet->size = stbi__get8(s); packet->type = stbi__get8(s); packet->channel = stbi__get8(s); act_comp |= packet->channel; if (stbi__at_eof(s)) { stbi__rewind( s ); return 0; } if (packet->size != 8) { stbi__rewind( s ); return 0; } } while (chained); *comp = (act_comp & 0x10 ? 4 : 3); return 1; } #endif // ************************************************************************************************* // Portable Gray Map and Portable Pixel Map loader // by Ken Miller // // PGM: http://netpbm.sourceforge.net/doc/pgm.html // PPM: http://netpbm.sourceforge.net/doc/ppm.html // // Known limitations: // Does not support comments in the header section // Does not support ASCII image data (formats P2 and P3) // Does not support 16-bit-per-channel #ifndef STBI_NO_PNM static int stbi__pnm_test(stbi__context *s) { char p, t; p = (char) stbi__get8(s); t = (char) stbi__get8(s); if (p != 'P' || (t != '5' && t != '6')) { stbi__rewind( s ); return 0; } return 1; } static stbi_uc *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) { stbi_uc *out; if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) return 0; *x = s->img_x; *y = s->img_y; *comp = s->img_n; out = (stbi_uc *) stbi__malloc(s->img_n * s->img_x * s->img_y); if (!out) return stbi__errpuc("outofmem", "Out of memory"); stbi__getn(s, out, s->img_n * s->img_x * s->img_y); if (req_comp && req_comp != s->img_n) { out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); if (out == NULL) return out; // stbi__convert_format frees input on failure } return out; } static int stbi__pnm_isspace(char c) { return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; } static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) { while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) *c = (char) stbi__get8(s); } static int stbi__pnm_isdigit(char c) { return c >= '0' && c <= '9'; } static int stbi__pnm_getinteger(stbi__context *s, char *c) { int value = 0; while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { value = value*10 + (*c - '0'); *c = (char) stbi__get8(s); } return value; } static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) { int maxv; char c, p, t; stbi__rewind( s ); // Get identifier p = (char) stbi__get8(s); t = (char) stbi__get8(s); if (p != 'P' || (t != '5' && t != '6')) { stbi__rewind( s ); return 0; } *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm c = (char) stbi__get8(s); stbi__pnm_skip_whitespace(s, &c); *x = stbi__pnm_getinteger(s, &c); // read width stbi__pnm_skip_whitespace(s, &c); *y = stbi__pnm_getinteger(s, &c); // read height stbi__pnm_skip_whitespace(s, &c); maxv = stbi__pnm_getinteger(s, &c); // read max value if (maxv > 255) return stbi__err("max value > 255", "PPM image not 8-bit"); else return 1; } #endif static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) { #ifndef STBI_NO_JPEG if (stbi__jpeg_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_PNG if (stbi__png_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_GIF if (stbi__gif_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_BMP if (stbi__bmp_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_PSD if (stbi__psd_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_PIC if (stbi__pic_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_PNM if (stbi__pnm_info(s, x, y, comp)) return 1; #endif #ifndef STBI_NO_HDR if (stbi__hdr_info(s, x, y, comp)) return 1; #endif // test tga last because it's a crappy test! #ifndef STBI_NO_TGA if (stbi__tga_info(s, x, y, comp)) return 1; #endif return stbi__err("unknown image type", "Image not of any known type, or corrupt"); } #ifndef STBI_NO_STDIO STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) { FILE *f = stbi__fopen(filename, "rb"); int result; if (!f) return stbi__err("can't fopen", "Unable to open file"); result = stbi_info_from_file(f, x, y, comp); fclose(f); return result; } STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) { int r; stbi__context s; long pos = ftell(f); stbi__start_file(&s, f); r = stbi__info_main(&s,x,y,comp); fseek(f,pos,SEEK_SET); return r; } #endif // !STBI_NO_STDIO STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) { stbi__context s; stbi__start_mem(&s,buffer,len); return stbi__info_main(&s,x,y,comp); } STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) { stbi__context s; stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); return stbi__info_main(&s,x,y,comp); } #endif // STB_IMAGE_IMPLEMENTATION /* revision history: 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA 2.07 (2015-09-13) fix compiler warnings partial animated GIF support limited 16-bit PSD support #ifdef unused functions bug with < 92 byte PIC,PNM,HDR,TGA 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit 2.03 (2015-04-12) extra corruption checking (mmozeiko) stbi_set_flip_vertically_on_load (nguillemot) fix NEON support; fix mingw support 2.02 (2015-01-19) fix incorrect assert, fix warning 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) progressive JPEG (stb) PGM/PPM support (Ken Miller) STBI_MALLOC,STBI_REALLOC,STBI_FREE GIF bugfix -- seemingly never worked STBI_NO_*, STBI_ONLY_* 1.48 (2014-12-14) fix incorrectly-named assert() 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) optimize PNG (ryg) fix bug in interlaced PNG with user-specified channel count (stb) 1.46 (2014-08-26) fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG 1.45 (2014-08-16) fix MSVC-ARM internal compiler error by wrapping malloc 1.44 (2014-08-07) various warning fixes from Ronny Chevalier 1.43 (2014-07-15) fix MSVC-only compiler problem in code changed in 1.42 1.42 (2014-07-09) don't define _CRT_SECURE_NO_WARNINGS (affects user code) fixes to stbi__cleanup_jpeg path added STBI_ASSERT to avoid requiring assert.h 1.41 (2014-06-25) fix search&replace from 1.36 that messed up comments/error messages 1.40 (2014-06-22) fix gcc struct-initialization warning 1.39 (2014-06-15) fix to TGA optimization when req_comp != number of components in TGA; fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) add support for BMP version 5 (more ignored fields) 1.38 (2014-06-06) suppress MSVC warnings on integer casts truncating values fix accidental rename of 'skip' field of I/O 1.37 (2014-06-04) remove duplicate typedef 1.36 (2014-06-03) convert to header file single-file library if de-iphone isn't set, load iphone images color-swapped instead of returning NULL 1.35 (2014-05-27) various warnings fix broken STBI_SIMD path fix bug where stbi_load_from_file no longer left file pointer in correct place fix broken non-easy path for 32-bit BMP (possibly never used) TGA optimization by Arseny Kapoulkine 1.34 (unknown) use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case 1.33 (2011-07-14) make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements 1.32 (2011-07-13) support for "info" function for all supported filetypes (SpartanJ) 1.31 (2011-06-20) a few more leak fixes, bug in PNG handling (SpartanJ) 1.30 (2011-06-11) added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) removed deprecated format-specific test/load functions removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) fix inefficiency in decoding 32-bit BMP (David Woo) 1.29 (2010-08-16) various warning fixes from Aurelien Pocheville 1.28 (2010-08-01) fix bug in GIF palette transparency (SpartanJ) 1.27 (2010-08-01) cast-to-stbi_uc to fix warnings 1.26 (2010-07-24) fix bug in file buffering for PNG reported by SpartanJ 1.25 (2010-07-17) refix trans_data warning (Won Chun) 1.24 (2010-07-12) perf improvements reading from files on platforms with lock-heavy fgetc() minor perf improvements for jpeg deprecated type-specific functions so we'll get feedback if they're needed attempt to fix trans_data warning (Won Chun) 1.23 fixed bug in iPhone support 1.22 (2010-07-10) removed image *writing* support stbi_info support from Jetro Lauha GIF support from Jean-Marc Lienher iPhone PNG-extensions from James Brown warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) 1.21 fix use of 'stbi_uc' in header (reported by jon blow) 1.20 added support for Softimage PIC, by Tom Seddon 1.19 bug in interlaced PNG corruption check (found by ryg) 1.18 (2008-08-02) fix a threading bug (local mutable static) 1.17 support interlaced PNG 1.16 major bugfix - stbi__convert_format converted one too many pixels 1.15 initialize some fields for thread safety 1.14 fix threadsafe conversion bug header-file-only version (#define STBI_HEADER_FILE_ONLY before including) 1.13 threadsafe 1.12 const qualifiers in the API 1.11 Support installable IDCT, colorspace conversion routines 1.10 Fixes for 64-bit (don't use "unsigned long") optimized upsampling by Fabian "ryg" Giesen 1.09 Fix format-conversion for PSD code (bad global variables!) 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz 1.07 attempt to fix C++ warning/errors again 1.06 attempt to fix C++ warning/errors again 1.05 fix TGA loading to return correct *comp and use good luminance calc 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR 1.02 support for (subset of) HDR files, float interface for preferred access to them 1.01 fix bug: possible bug in handling right-side up bmps... not sure fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all 1.00 interface to zlib that skips zlib header 0.99 correct handling of alpha in palette 0.98 TGA loader by lonesock; dynamically add loaders (untested) 0.97 jpeg errors on too large a file; also catch another malloc failure 0.96 fix detection of invalid v value - particleman@mollyrocket forum 0.95 during header scan, seek to markers in case of padding 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same 0.93 handle jpegtran output; verbose errors 0.92 read 4,8,16,24,32-bit BMP files of several formats 0.91 output 24-bit Windows 3.0 BMP files 0.90 fix a few more warnings; bump version number to approach 1.0 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd 0.60 fix compiling as c++ 0.59 fix warnings: merge Dave Moore's -Wall fixes 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available 0.56 fix bug: zlib uncompressed mode len vs. nlen 0.55 fix bug: restart_interval not initialized to 0 0.54 allow NULL for 'int *comp' 0.53 fix bug in png 3->4; speedup png decoding 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments 0.51 obey req_comp requests, 1-component jpegs return as 1-component, on 'test' only check type, not whether we support this variant 0.50 (2006-11-19) first released version */ ================================================ FILE: nuklear.h ================================================ /* /// # Nuklear /// ![](https://cloud.githubusercontent.com/assets/8057201/11761525/ae06f0ca-a0c6-11e5-819d-5610b25f6ef4.gif) /// /// ## Contents /// 1. About section /// 2. Highlights section /// 3. Features section /// 4. Usage section /// 1. Flags section /// 2. Constants section /// 3. Dependencies section /// 5. Example section /// 6. API section /// 1. Context section /// 2. Input section /// 3. Drawing section /// 4. Window section /// 5. Layouting section /// 6. Groups section /// 7. Tree section /// 8. Properties section /// 7. License section /// 8. Changelog section /// 9. Gallery section /// 10. Credits section /// /// ## About /// This is a minimal state immediate mode graphical user interface toolkit /// written in ANSI C and licensed under public domain. It was designed as a simple /// embeddable user interface for application and does not have any dependencies, /// a default renderbackend or OS window and input handling but instead provides a very modular /// library approach by using simple input state for input and draw /// commands describing primitive shapes as output. So instead of providing a /// layered library that tries to abstract over a number of platform and /// render backends it only focuses on the actual UI. /// /// ## Highlights /// - Graphical user interface toolkit /// - Single header library /// - Written in C89 (a.k.a. ANSI C or ISO C90) /// - Small codebase (~18kLOC) /// - Focus on portability, efficiency and simplicity /// - No dependencies (not even the standard library if not wanted) /// - Fully skinnable and customizable /// - Low memory footprint with total memory control if needed or wanted /// - UTF-8 support /// - No global or hidden state /// - Customizable library modules (you can compile and use only what you need) /// - Optional font baker and vertex buffer output /// /// ## Features /// - Absolutely no platform dependent code /// - Memory management control ranging from/to /// - Ease of use by allocating everything from standard library /// - Control every byte of memory inside the library /// - Font handling control ranging from/to /// - Use your own font implementation for everything /// - Use this libraries internal font baking and handling API /// - Drawing output control ranging from/to /// - Simple shapes for more high level APIs which already have drawing capabilities /// - Hardware accessible anti-aliased vertex buffer output /// - Customizable colors and properties ranging from/to /// - Simple changes to color by filling a simple color table /// - Complete control with ability to use skinning to decorate widgets /// - Bendable UI library with widget ranging from/to /// - Basic widgets like buttons, checkboxes, slider, ... /// - Advanced widget like abstract comboboxes, contextual menus,... /// - Compile time configuration to only compile what you need /// - Subset which can be used if you do not want to link or use the standard library /// - Can be easily modified to only update on user input instead of frame updates /// /// ## Usage /// This library is self contained in one single header file and can be used either /// in header only mode or in implementation mode. The header only mode is used /// by default when included and allows including this header in other headers /// and does not contain the actual implementation.

/// /// The implementation mode requires to define the preprocessor macro /// NK_IMPLEMENTATION in *one* .c/.cpp file before #includeing this file, e.g.: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~C /// #define NK_IMPLEMENTATION /// #include "nuklear.h" /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Also optionally define the symbols listed in the section "OPTIONAL DEFINES" /// below in header and implementation mode if you want to use additional functionality /// or need more control over the library. /// /// !!! WARNING /// Every time nuklear is included define the same compiler flags. This very important not doing so could lead to compiler errors or even worse stack corruptions. /// /// ### Flags /// Flag | Description /// --------------------------------|------------------------------------------ /// NK_PRIVATE | If defined declares all functions as static, so they can only be accessed inside the file that contains the implementation /// NK_INCLUDE_FIXED_TYPES | If defined it will include header `` for fixed sized types otherwise nuklear tries to select the correct type. If that fails it will throw a compiler error and you have to select the correct types yourself. /// NK_INCLUDE_DEFAULT_ALLOCATOR | If defined it will include header `` and provide additional functions to use this library without caring for memory allocation control and therefore ease memory management. /// NK_INCLUDE_STANDARD_IO | If defined it will include header `` and provide additional functions depending on file loading. /// NK_INCLUDE_STANDARD_VARARGS | If defined it will include header and provide additional functions depending on file loading. /// NK_INCLUDE_VERTEX_BUFFER_OUTPUT | Defining this adds a vertex draw command list backend to this library, which allows you to convert queue commands into vertex draw commands. This is mainly if you need a hardware accessible format for OpenGL, DirectX, Vulkan, Metal,... /// NK_INCLUDE_FONT_BAKING | Defining this adds `stb_truetype` and `stb_rect_pack` implementation to this library and provides font baking and rendering. If you already have font handling or do not want to use this font handler you don't have to define it. /// NK_INCLUDE_DEFAULT_FONT | Defining this adds the default font: ProggyClean.ttf into this library which can be loaded into a font atlas and allows using this library without having a truetype font /// NK_INCLUDE_COMMAND_USERDATA | Defining this adds a userdata pointer into each command. Can be useful for example if you want to provide custom shaders depending on the used widget. Can be combined with the style structures. /// NK_BUTTON_TRIGGER_ON_RELEASE | Different platforms require button clicks occurring either on buttons being pressed (up to down) or released (down to up). By default this library will react on buttons being pressed, but if you define this it will only trigger if a button is released. /// NK_ZERO_COMMAND_MEMORY | Defining this will zero out memory for each drawing command added to a drawing queue (inside nk_command_buffer_push). Zeroing command memory is very useful for fast checking (using memcmp) if command buffers are equal and avoid drawing frames when nothing on screen has changed since previous frame. /// NK_UINT_DRAW_INDEX | Defining this will set the size of vertex index elements when using NK_VERTEX_BUFFER_OUTPUT to 32bit instead of the default of 16bit /// NK_KEYSTATE_BASED_INPUT | Define this if your backend uses key state for each frame rather than key press/release events /// /// !!! WARNING /// The following flags will pull in the standard C library: /// - NK_INCLUDE_DEFAULT_ALLOCATOR /// - NK_INCLUDE_STANDARD_IO /// - NK_INCLUDE_STANDARD_VARARGS /// /// !!! WARNING /// The following flags if defined need to be defined for both header and implementation: /// - NK_INCLUDE_FIXED_TYPES /// - NK_INCLUDE_DEFAULT_ALLOCATOR /// - NK_INCLUDE_STANDARD_VARARGS /// - NK_INCLUDE_VERTEX_BUFFER_OUTPUT /// - NK_INCLUDE_FONT_BAKING /// - NK_INCLUDE_DEFAULT_FONT /// - NK_INCLUDE_STANDARD_VARARGS /// - NK_INCLUDE_COMMAND_USERDATA /// - NK_UINT_DRAW_INDEX /// /// ### Constants /// Define | Description /// --------------------------------|--------------------------------------- /// NK_BUFFER_DEFAULT_INITIAL_SIZE | Initial buffer size allocated by all buffers while using the default allocator functions included by defining NK_INCLUDE_DEFAULT_ALLOCATOR. If you don't want to allocate the default 4k memory then redefine it. /// NK_MAX_NUMBER_BUFFER | Maximum buffer size for the conversion buffer between float and string Under normal circumstances this should be more than sufficient. /// NK_INPUT_MAX | Defines the max number of bytes which can be added as text input in one frame. Under normal circumstances this should be more than sufficient. /// /// !!! WARNING /// The following constants if defined need to be defined for both header and implementation: /// - NK_MAX_NUMBER_BUFFER /// - NK_BUFFER_DEFAULT_INITIAL_SIZE /// - NK_INPUT_MAX /// /// ### Dependencies /// Function | Description /// ------------|--------------------------------------------------------------- /// NK_ASSERT | If you don't define this, nuklear will use with assert(). /// NK_MEMSET | You can define this to 'memset' or your own memset implementation replacement. If not nuklear will use its own version. /// NK_MEMCPY | You can define this to 'memcpy' or your own memcpy implementation replacement. If not nuklear will use its own version. /// NK_SQRT | You can define this to 'sqrt' or your own sqrt implementation replacement. If not nuklear will use its own slow and not highly accurate version. /// NK_SIN | You can define this to 'sinf' or your own sine implementation replacement. If not nuklear will use its own approximation implementation. /// NK_COS | You can define this to 'cosf' or your own cosine implementation replacement. If not nuklear will use its own approximation implementation. /// NK_STRTOD | You can define this to `strtod` or your own string to double conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). /// NK_DTOA | You can define this to `dtoa` or your own double to string conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). /// NK_VSNPRINTF| If you define `NK_INCLUDE_STANDARD_VARARGS` as well as `NK_INCLUDE_STANDARD_IO` and want to be safe define this to `vsnprintf` on compilers supporting later versions of C or C++. By default nuklear will check for your stdlib version in C as well as compiler version in C++. if `vsnprintf` is available it will define it to `vsnprintf` directly. If not defined and if you have older versions of C or C++ it will be defined to `vsprintf` which is unsafe. /// /// !!! WARNING /// The following dependencies will pull in the standard C library if not redefined: /// - NK_ASSERT /// /// !!! WARNING /// The following dependencies if defined need to be defined for both header and implementation: /// - NK_ASSERT /// /// !!! WARNING /// The following dependencies if defined need to be defined only for the implementation part: /// - NK_MEMSET /// - NK_MEMCPY /// - NK_SQRT /// - NK_SIN /// - NK_COS /// - NK_STRTOD /// - NK_DTOA /// - NK_VSNPRINTF /// /// ## Example /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// // init gui state /// enum {EASY, HARD}; /// static int op = EASY; /// static float value = 0.6f; /// static int i = 20; /// struct nk_context ctx; /// /// nk_init_fixed(&ctx, calloc(1, MAX_MEMORY), MAX_MEMORY, &font); /// if (nk_begin(&ctx, "Show", nk_rect(50, 50, 220, 220), /// NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) { /// // fixed widget pixel width /// nk_layout_row_static(&ctx, 30, 80, 1); /// if (nk_button_label(&ctx, "button")) { /// // event handling /// } /// /// // fixed widget window ratio width /// nk_layout_row_dynamic(&ctx, 30, 2); /// if (nk_option_label(&ctx, "easy", op == EASY)) op = EASY; /// if (nk_option_label(&ctx, "hard", op == HARD)) op = HARD; /// /// // custom widget pixel width /// nk_layout_row_begin(&ctx, NK_STATIC, 30, 2); /// { /// nk_layout_row_push(&ctx, 50); /// nk_label(&ctx, "Volume:", NK_TEXT_LEFT); /// nk_layout_row_push(&ctx, 110); /// nk_slider_float(&ctx, 0, &value, 1.0f, 0.1f); /// } /// nk_layout_row_end(&ctx); /// } /// nk_end(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// ![](https://cloud.githubusercontent.com/assets/8057201/10187981/584ecd68-675c-11e5-897c-822ef534a876.png) /// /// ## API /// */ #ifndef NK_SINGLE_FILE #define NK_SINGLE_FILE #endif #ifndef NK_NUKLEAR_H_ #define NK_NUKLEAR_H_ #ifdef __cplusplus extern "C" { #endif /* * ============================================================== * * CONSTANTS * * =============================================================== */ #define NK_UNDEFINED (-1.0f) #define NK_UTF_INVALID 0xFFFD /* internal invalid utf8 rune */ #define NK_UTF_SIZE 4 /* describes the number of bytes a glyph consists of*/ #ifndef NK_INPUT_MAX #define NK_INPUT_MAX 16 #endif #ifndef NK_MAX_NUMBER_BUFFER #define NK_MAX_NUMBER_BUFFER 64 #endif #ifndef NK_SCROLLBAR_HIDING_TIMEOUT #define NK_SCROLLBAR_HIDING_TIMEOUT 4.0f #endif /* * ============================================================== * * HELPER * * =============================================================== */ #ifndef NK_API #ifdef NK_PRIVATE #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199409L)) #define NK_API static inline #elif defined(__cplusplus) #define NK_API static inline #else #define NK_API static #endif #else #define NK_API extern #endif #endif #ifndef NK_LIB #ifdef NK_SINGLE_FILE #define NK_LIB static #else #define NK_LIB extern #endif #endif #define NK_INTERN static #define NK_STORAGE static #define NK_GLOBAL static #define NK_FLAG(x) (1 << (x)) #define NK_STRINGIFY(x) #x #define NK_MACRO_STRINGIFY(x) NK_STRINGIFY(x) #define NK_STRING_JOIN_IMMEDIATE(arg1, arg2) arg1 ## arg2 #define NK_STRING_JOIN_DELAY(arg1, arg2) NK_STRING_JOIN_IMMEDIATE(arg1, arg2) #define NK_STRING_JOIN(arg1, arg2) NK_STRING_JOIN_DELAY(arg1, arg2) #ifdef _MSC_VER #define NK_UNIQUE_NAME(name) NK_STRING_JOIN(name,__COUNTER__) #else #define NK_UNIQUE_NAME(name) NK_STRING_JOIN(name,__LINE__) #endif #ifndef NK_STATIC_ASSERT #define NK_STATIC_ASSERT(exp) typedef char NK_UNIQUE_NAME(_dummy_array)[(exp)?1:-1] #endif #ifndef NK_FILE_LINE #ifdef _MSC_VER #define NK_FILE_LINE __FILE__ ":" NK_MACRO_STRINGIFY(__COUNTER__) #else #define NK_FILE_LINE __FILE__ ":" NK_MACRO_STRINGIFY(__LINE__) #endif #endif #define NK_MIN(a,b) ((a) < (b) ? (a) : (b)) #define NK_MAX(a,b) ((a) < (b) ? (b) : (a)) #define NK_CLAMP(i,v,x) (NK_MAX(NK_MIN(v,x), i)) #ifdef NK_INCLUDE_STANDARD_VARARGS #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */ #include #define NK_PRINTF_FORMAT_STRING _Printf_format_string_ #else #define NK_PRINTF_FORMAT_STRING #endif #if defined(__GNUC__) #define NK_PRINTF_VARARG_FUNC(fmtargnumber) __attribute__((format(__printf__, fmtargnumber, fmtargnumber+1))) #define NK_PRINTF_VALIST_FUNC(fmtargnumber) __attribute__((format(__printf__, fmtargnumber, 0))) #else #define NK_PRINTF_VARARG_FUNC(fmtargnumber) #define NK_PRINTF_VALIST_FUNC(fmtargnumber) #endif #endif /* * =============================================================== * * BASIC * * =============================================================== */ #ifdef NK_INCLUDE_FIXED_TYPES #include #define NK_INT8 int8_t #define NK_UINT8 uint8_t #define NK_INT16 int16_t #define NK_UINT16 uint16_t #define NK_INT32 int32_t #define NK_UINT32 uint32_t #define NK_SIZE_TYPE uintptr_t #define NK_POINTER_TYPE uintptr_t #else #ifndef NK_INT8 #define NK_INT8 signed char #endif #ifndef NK_UINT8 #define NK_UINT8 unsigned char #endif #ifndef NK_INT16 #define NK_INT16 signed short #endif #ifndef NK_UINT16 #define NK_UINT16 unsigned short #endif #ifndef NK_INT32 #if defined(_MSC_VER) #define NK_INT32 __int32 #else #define NK_INT32 signed int #endif #endif #ifndef NK_UINT32 #if defined(_MSC_VER) #define NK_UINT32 unsigned __int32 #else #define NK_UINT32 unsigned int #endif #endif #ifndef NK_SIZE_TYPE #if defined(_WIN64) && defined(_MSC_VER) #define NK_SIZE_TYPE unsigned __int64 #elif (defined(_WIN32) || defined(WIN32)) && defined(_MSC_VER) #define NK_SIZE_TYPE unsigned __int32 #elif defined(__GNUC__) || defined(__clang__) #if defined(__x86_64__) || defined(__ppc64__) #define NK_SIZE_TYPE unsigned long #else #define NK_SIZE_TYPE unsigned int #endif #else #define NK_SIZE_TYPE unsigned long #endif #endif #ifndef NK_POINTER_TYPE #if defined(_WIN64) && defined(_MSC_VER) #define NK_POINTER_TYPE unsigned __int64 #elif (defined(_WIN32) || defined(WIN32)) && defined(_MSC_VER) #define NK_POINTER_TYPE unsigned __int32 #elif defined(__GNUC__) || defined(__clang__) #if defined(__x86_64__) || defined(__ppc64__) #define NK_POINTER_TYPE unsigned long #else #define NK_POINTER_TYPE unsigned int #endif #else #define NK_POINTER_TYPE unsigned long #endif #endif #endif typedef NK_INT8 nk_char; typedef NK_UINT8 nk_uchar; typedef NK_UINT8 nk_byte; typedef NK_INT16 nk_short; typedef NK_UINT16 nk_ushort; typedef NK_INT32 nk_int; typedef NK_UINT32 nk_uint; typedef NK_SIZE_TYPE nk_size; typedef NK_POINTER_TYPE nk_ptr; typedef nk_uint nk_hash; typedef nk_uint nk_flags; typedef nk_uint nk_rune; /* Make sure correct type size: * This will fire with a negative subscript error if the type sizes * are set incorrectly by the compiler, and compile out if not */ NK_STATIC_ASSERT(sizeof(nk_short) == 2); NK_STATIC_ASSERT(sizeof(nk_ushort) == 2); NK_STATIC_ASSERT(sizeof(nk_uint) == 4); NK_STATIC_ASSERT(sizeof(nk_int) == 4); NK_STATIC_ASSERT(sizeof(nk_byte) == 1); NK_STATIC_ASSERT(sizeof(nk_flags) >= 4); NK_STATIC_ASSERT(sizeof(nk_rune) >= 4); NK_STATIC_ASSERT(sizeof(nk_size) >= sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_ptr) >= sizeof(void*)); /* ============================================================================ * * API * * =========================================================================== */ struct nk_buffer; struct nk_allocator; struct nk_command_buffer; struct nk_draw_command; struct nk_convert_config; struct nk_style_item; struct nk_text_edit; struct nk_draw_list; struct nk_user_font; struct nk_panel; struct nk_context; struct nk_draw_vertex_layout_element; struct nk_style_button; struct nk_style_toggle; struct nk_style_selectable; struct nk_style_slide; struct nk_style_progress; struct nk_style_scrollbar; struct nk_style_edit; struct nk_style_property; struct nk_style_chart; struct nk_style_combo; struct nk_style_tab; struct nk_style_window_header; struct nk_style_window; enum {nk_false, nk_true}; struct nk_color {nk_byte r,g,b,a;}; struct nk_colorf {float r,g,b,a;}; struct nk_vec2 {float x,y;}; struct nk_vec2i {short x, y;}; struct nk_rect {float x,y,w,h;}; struct nk_recti {short x,y,w,h;}; typedef char nk_glyph[NK_UTF_SIZE]; typedef union {void *ptr; int id;} nk_handle; struct nk_image {nk_handle handle;unsigned short w,h;unsigned short region[4];}; struct nk_cursor {struct nk_image img; struct nk_vec2 size, offset;}; struct nk_scroll {nk_uint x, y;}; enum nk_heading {NK_UP, NK_RIGHT, NK_DOWN, NK_LEFT}; enum nk_button_behavior {NK_BUTTON_DEFAULT, NK_BUTTON_REPEATER}; enum nk_modify {NK_FIXED = nk_false, NK_MODIFIABLE = nk_true}; enum nk_orientation {NK_VERTICAL, NK_HORIZONTAL}; enum nk_collapse_states {NK_MINIMIZED = nk_false, NK_MAXIMIZED = nk_true}; enum nk_show_states {NK_HIDDEN = nk_false, NK_SHOWN = nk_true}; enum nk_chart_type {NK_CHART_LINES, NK_CHART_COLUMN, NK_CHART_MAX}; enum nk_chart_event {NK_CHART_HOVERING = 0x01, NK_CHART_CLICKED = 0x02}; enum nk_color_format {NK_RGB, NK_RGBA}; enum nk_popup_type {NK_POPUP_STATIC, NK_POPUP_DYNAMIC}; enum nk_layout_format {NK_DYNAMIC, NK_STATIC}; enum nk_tree_type {NK_TREE_NODE, NK_TREE_TAB}; typedef void*(*nk_plugin_alloc)(nk_handle, void *old, nk_size); typedef void (*nk_plugin_free)(nk_handle, void *old); typedef int(*nk_plugin_filter)(const struct nk_text_edit*, nk_rune unicode); typedef void(*nk_plugin_paste)(nk_handle, struct nk_text_edit*); typedef void(*nk_plugin_copy)(nk_handle, const char*, int len); struct nk_allocator { nk_handle userdata; nk_plugin_alloc alloc; nk_plugin_free free; }; enum nk_symbol_type { NK_SYMBOL_NONE, NK_SYMBOL_X, NK_SYMBOL_UNDERSCORE, NK_SYMBOL_CIRCLE_SOLID, NK_SYMBOL_CIRCLE_OUTLINE, NK_SYMBOL_RECT_SOLID, NK_SYMBOL_RECT_OUTLINE, NK_SYMBOL_TRIANGLE_UP, NK_SYMBOL_TRIANGLE_DOWN, NK_SYMBOL_TRIANGLE_LEFT, NK_SYMBOL_TRIANGLE_RIGHT, NK_SYMBOL_PLUS, NK_SYMBOL_MINUS, NK_SYMBOL_MAX }; /* ============================================================================= * * CONTEXT * * =============================================================================*/ /*/// ### Context /// Contexts are the main entry point and the majestro of nuklear and contain all required state. /// They are used for window, memory, input, style, stack, commands and time management and need /// to be passed into all nuklear GUI specific functions. /// /// #### Usage /// To use a context it first has to be initialized which can be achieved by calling /// one of either `nk_init_default`, `nk_init_fixed`, `nk_init`, `nk_init_custom`. /// Each takes in a font handle and a specific way of handling memory. Memory control /// hereby ranges from standard library to just specifying a fixed sized block of memory /// which nuklear has to manage itself from. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // [...] /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk_init_default__ | Initializes context with standard library memory allocation (malloc,free) /// __nk_init_fixed__ | Initializes context from single fixed size memory block /// __nk_init__ | Initializes context with memory allocator callbacks for alloc and free /// __nk_init_custom__ | Initializes context from two buffers. One for draw commands the other for window/panel/table allocations /// __nk_clear__ | Called at the end of the frame to reset and prepare the context for the next frame /// __nk_free__ | Shutdown and free all memory allocated inside the context /// __nk_set_user_data__| Utility function to pass user data to draw command */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR /*/// #### nk_init_default /// Initializes a `nk_context` struct with a default standard library allocator. /// Should be used if you don't want to be bothered with memory management in nuklear. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_default(struct nk_context *ctx, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. /// */ NK_API int nk_init_default(struct nk_context*, const struct nk_user_font*); #endif /*/// #### nk_init_fixed /// Initializes a `nk_context` struct from single fixed size memory block /// Should be used if you want complete control over nuklear's memory management. /// Especially recommended for system with little memory or systems with virtual memory. /// For the later case you can just allocate for example 16MB of virtual memory /// and only the required amount of memory will actually be committed. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_fixed(struct nk_context *ctx, void *memory, nk_size size, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// !!! Warning /// make sure the passed memory block is aligned correctly for `nk_draw_commands`. /// /// Parameter | Description /// ------------|-------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __memory__ | Must point to a previously allocated memory block /// __size__ | Must contain the total size of __memory__ /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init_fixed(struct nk_context*, void *memory, nk_size size, const struct nk_user_font*); /*/// #### nk_init /// Initializes a `nk_context` struct with memory allocation callbacks for nuklear to allocate /// memory from. Used internally for `nk_init_default` and provides a kitchen sink allocation /// interface to nuklear. Can be useful for cases like monitoring memory consumption. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __alloc__ | Must point to a previously allocated memory allocator /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init(struct nk_context*, struct nk_allocator*, const struct nk_user_font*); /*/// #### nk_init_custom /// Initializes a `nk_context` struct from two different either fixed or growing /// buffers. The first buffer is for allocating draw commands while the second buffer is /// used for allocating windows, panels and state tables. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __cmds__ | Must point to a previously initialized memory buffer either fixed or dynamic to store draw commands into /// __pool__ | Must point to a previously initialized memory buffer either fixed or dynamic to store windows, panels and tables /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init_custom(struct nk_context*, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font*); /*/// #### nk_clear /// Resets the context state at the end of the frame. This includes mostly /// garbage collector tasks like removing windows or table not called and therefore /// used anymore. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_clear(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_clear(struct nk_context*); /*/// #### nk_free /// Frees all memory allocated by nuklear. Not needed if context was /// initialized with `nk_init_fixed`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_free(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_free(struct nk_context*); #ifdef NK_INCLUDE_COMMAND_USERDATA /*/// #### nk_set_user_data /// Sets the currently passed userdata passed down into each draw command. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_set_user_data(struct nk_context *ctx, nk_handle data); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|-------------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __data__ | Handle with either pointer or index to be passed into every draw commands */ NK_API void nk_set_user_data(struct nk_context*, nk_handle handle); #endif /* ============================================================================= * * INPUT * * =============================================================================*/ /*/// ### Input /// The input API is responsible for holding the current input state composed of /// mouse, key and text input states. /// It is worth noting that no direct OS or window handling is done in nuklear. /// Instead all input state has to be provided by platform specific code. This on one hand /// expects more work from the user and complicates usage but on the other hand /// provides simple abstraction over a big number of platforms, libraries and other /// already provided functionality. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// // [...] /// } /// } nk_input_end(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Usage /// Input state needs to be provided to nuklear by first calling `nk_input_begin` /// which resets internal state like delta mouse position and button transistions. /// After `nk_input_begin` all current input state needs to be provided. This includes /// mouse motion, button and key pressed and released, text input and scrolling. /// Both event- or state-based input handling are supported by this API /// and should work without problems. Finally after all input state has been /// mirrored `nk_input_end` needs to be called to finish input process. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// // [...] /// } /// } /// nk_input_end(&ctx); /// // [...] /// nk_clear(&ctx); /// } nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk_input_begin__ | Begins the input mirroring process. Needs to be called before all other `nk_input_xxx` calls /// __nk_input_motion__ | Mirrors mouse cursor position /// __nk_input_key__ | Mirrors key state with either pressed or released /// __nk_input_button__ | Mirrors mouse button state with either pressed or released /// __nk_input_scroll__ | Mirrors mouse scroll values /// __nk_input_char__ | Adds a single ASCII text character into an internal text buffer /// __nk_input_glyph__ | Adds a single multi-byte UTF-8 character into an internal text buffer /// __nk_input_unicode__| Adds a single unicode rune into an internal text buffer /// __nk_input_end__ | Ends the input mirroring process by calculating state changes. Don't call any `nk_input_xxx` function referenced above after this call */ enum nk_keys { NK_KEY_NONE, NK_KEY_SHIFT, NK_KEY_CTRL, NK_KEY_DEL, NK_KEY_ENTER, NK_KEY_TAB, NK_KEY_BACKSPACE, NK_KEY_COPY, NK_KEY_CUT, NK_KEY_PASTE, NK_KEY_UP, NK_KEY_DOWN, NK_KEY_LEFT, NK_KEY_RIGHT, /* Shortcuts: text field */ NK_KEY_TEXT_INSERT_MODE, NK_KEY_TEXT_REPLACE_MODE, NK_KEY_TEXT_RESET_MODE, NK_KEY_TEXT_LINE_START, NK_KEY_TEXT_LINE_END, NK_KEY_TEXT_START, NK_KEY_TEXT_END, NK_KEY_TEXT_UNDO, NK_KEY_TEXT_REDO, NK_KEY_TEXT_SELECT_ALL, NK_KEY_TEXT_WORD_LEFT, NK_KEY_TEXT_WORD_RIGHT, /* Shortcuts: scrollbar */ NK_KEY_SCROLL_START, NK_KEY_SCROLL_END, NK_KEY_SCROLL_DOWN, NK_KEY_SCROLL_UP, NK_KEY_MAX }; enum nk_buttons { NK_BUTTON_LEFT, NK_BUTTON_MIDDLE, NK_BUTTON_RIGHT, NK_BUTTON_DOUBLE, NK_BUTTON_MAX }; /*/// #### nk_input_begin /// Begins the input mirroring process by resetting text, scroll /// mouse, previous mouse position and movement as well as key state transitions, /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_begin(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_input_begin(struct nk_context*); /*/// #### nk_input_motion /// Mirrors current mouse position to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_motion(struct nk_context *ctx, int x, int y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __x__ | Must hold an integer describing the current mouse cursor x-position /// __y__ | Must hold an integer describing the current mouse cursor y-position */ NK_API void nk_input_motion(struct nk_context*, int x, int y); /*/// #### nk_input_key /// Mirrors the state of a specific key to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_key(struct nk_context*, enum nk_keys key, int down); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __key__ | Must be any value specified in enum `nk_keys` that needs to be mirrored /// __down__ | Must be 0 for key is up and 1 for key is down */ NK_API void nk_input_key(struct nk_context*, enum nk_keys, int down); /*/// #### nk_input_button /// Mirrors the state of a specific mouse button to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_button(struct nk_context *ctx, enum nk_buttons btn, int x, int y, int down); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __btn__ | Must be any value specified in enum `nk_buttons` that needs to be mirrored /// __x__ | Must contain an integer describing mouse cursor x-position on click up/down /// __y__ | Must contain an integer describing mouse cursor y-position on click up/down /// __down__ | Must be 0 for key is up and 1 for key is down */ NK_API void nk_input_button(struct nk_context*, enum nk_buttons, int x, int y, int down); /*/// #### nk_input_scroll /// Copies the last mouse scroll value to nuklear. Is generally /// a scroll value. So does not have to come from mouse and could also originate /// TODO finish this sentence /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_scroll(struct nk_context *ctx, struct nk_vec2 val); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __val__ | vector with both X- as well as Y-scroll value */ NK_API void nk_input_scroll(struct nk_context*, struct nk_vec2 val); /*/// #### nk_input_char /// Copies a single ASCII character into an internal text buffer /// This is basically a helper function to quickly push ASCII characters into /// nuklear. /// /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_char(struct nk_context *ctx, char c); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __c__ | Must be a single ASCII character preferable one that can be printed */ NK_API void nk_input_char(struct nk_context*, char); /*/// #### nk_input_glyph /// Converts an encoded unicode rune into UTF-8 and copies the result into an /// internal text buffer. /// /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_glyph(struct nk_context *ctx, const nk_glyph g); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __g__ | UTF-32 unicode codepoint */ NK_API void nk_input_glyph(struct nk_context*, const nk_glyph); /*/// #### nk_input_unicode /// Converts a unicode rune into UTF-8 and copies the result /// into an internal text buffer. /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_unicode(struct nk_context*, nk_rune rune); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __rune__ | UTF-32 unicode codepoint */ NK_API void nk_input_unicode(struct nk_context*, nk_rune); /*/// #### nk_input_end /// End the input mirroring process by resetting mouse grabbing /// state to ensure the mouse cursor is not grabbed indefinitely. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_end(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_input_end(struct nk_context*); /* ============================================================================= * * DRAWING * * =============================================================================*/ /*/// ### Drawing /// This library was designed to be render backend agnostic so it does /// not draw anything to screen directly. Instead all drawn shapes, widgets /// are made of, are buffered into memory and make up a command queue. /// Each frame therefore fills the command buffer with draw commands /// that then need to be executed by the user and his own render backend. /// After that the command buffer needs to be cleared and a new frame can be /// started. It is probably important to note that the command buffer is the main /// drawing API and the optional vertex buffer API only takes this format and /// converts it into a hardware accessible format. /// /// #### Usage /// To draw all draw commands accumulated over a frame you need your own render /// backend able to draw a number of 2D primitives. This includes at least /// filled and stroked rectangles, circles, text, lines, triangles and scissors. /// As soon as this criterion is met you can iterate over each draw command /// and execute each draw command in a interpreter like fashion: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case //...: /// //[...] /// } /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In program flow context draw commands need to be executed after input has been /// gathered and the complete UI with windows and their contained widgets have /// been executed and before calling `nk_clear` which frees all previously /// allocated draw commands. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// [...] /// } /// } /// nk_input_end(&ctx); /// // /// // [...] /// // /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// You probably noticed that you have to draw all of the UI each frame which is /// quite wasteful. While the actual UI updating loop is quite fast rendering /// without actually needing it is not. So there are multiple things you could do. /// /// First is only update on input. This of course is only an option if your /// application only depends on the UI and does not require any outside calculations. /// If you actually only update on input make sure to update the UI two times each /// frame and call `nk_clear` directly after the first pass and only draw in /// the second pass. In addition it is recommended to also add additional timers /// to make sure the UI is not drawn more than a fixed number of frames per second. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // [...wait for input ] /// // [...do two UI passes ...] /// do_ui(...) /// nk_clear(&ctx); /// do_ui(...) /// // /// // draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// //[...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// The second probably more applicable trick is to only draw if anything changed. /// It is not really useful for applications with continuous draw loop but /// quite useful for desktop applications. To actually get nuklear to only /// draw on changes you first have to define `NK_ZERO_COMMAND_MEMORY` and /// allocate a memory buffer that will store each unique drawing output. /// After each frame you compare the draw command memory inside the library /// with your allocated buffer by memcmp. If memcmp detects differences /// you have to copy the command buffer into the allocated buffer /// and then draw like usual (this example uses fixed memory but you could /// use dynamically allocated memory). /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// //[... other defines ...] /// #define NK_ZERO_COMMAND_MEMORY /// #include "nuklear.h" /// // /// // setup context /// struct nk_context ctx; /// void *last = calloc(1,64*1024); /// void *buf = calloc(1,64*1024); /// nk_init_fixed(&ctx, buf, 64*1024); /// // /// // loop /// while (1) { /// // [...input...] /// // [...ui...] /// void *cmds = nk_buffer_memory(&ctx.memory); /// if (memcmp(cmds, last, ctx.memory.allocated)) { /// memcpy(last,cmds,ctx.memory.allocated); /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// } /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Finally while using draw commands makes sense for higher abstracted platforms like /// X11 and Win32 or drawing libraries it is often desirable to use graphics /// hardware directly. Therefore it is possible to just define /// `NK_INCLUDE_VERTEX_BUFFER_OUTPUT` which includes optional vertex output. /// To access the vertex output you first have to convert all draw commands into /// vertexes by calling `nk_convert` which takes in your preferred vertex format. /// After successfully converting all draw commands just iterate over and execute all /// vertex draw commands: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// // fill configuration /// struct your_vertex /// { /// float pos[2]; // important to keep it to 2 floats /// float uv[2]; /// unsigned char col[4]; /// }; /// struct nk_convert_config cfg = {}; /// static const struct nk_draw_vertex_layout_element vertex_layout[] = { /// {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, pos)}, /// {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, uv)}, /// {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct your_vertex, col)}, /// {NK_VERTEX_LAYOUT_END} /// }; /// cfg.shape_AA = NK_ANTI_ALIASING_ON; /// cfg.line_AA = NK_ANTI_ALIASING_ON; /// cfg.vertex_layout = vertex_layout; /// cfg.vertex_size = sizeof(struct your_vertex); /// cfg.vertex_alignment = NK_ALIGNOF(struct your_vertex); /// cfg.circle_segment_count = 22; /// cfg.curve_segment_count = 22; /// cfg.arc_segment_count = 22; /// cfg.global_alpha = 1.0f; /// cfg.null = dev->null; /// // /// // setup buffers and convert /// struct nk_buffer cmds, verts, idx; /// nk_buffer_init_default(&cmds); /// nk_buffer_init_default(&verts); /// nk_buffer_init_default(&idx); /// nk_convert(&ctx, &cmds, &verts, &idx, &cfg); /// // /// // draw /// nk_draw_foreach(cmd, &ctx, &cmds) { /// if (!cmd->elem_count) continue; /// //[...] /// } /// nk_buffer_free(&cms); /// nk_buffer_free(&verts); /// nk_buffer_free(&idx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk__begin__ | Returns the first draw command in the context draw command list to be drawn /// __nk__next__ | Increments the draw command iterator to the next command inside the context draw command list /// __nk_foreach__ | Iterates over each draw command inside the context draw command list /// __nk_convert__ | Converts from the abstract draw commands list into a hardware accessible vertex format /// __nk_draw_begin__ | Returns the first vertex command in the context vertex draw list to be executed /// __nk__draw_next__ | Increments the vertex command iterator to the next command inside the context vertex command list /// __nk__draw_end__ | Returns the end of the vertex draw list /// __nk_draw_foreach__ | Iterates over each vertex draw command inside the vertex draw list */ enum nk_anti_aliasing {NK_ANTI_ALIASING_OFF, NK_ANTI_ALIASING_ON}; enum nk_convert_result { NK_CONVERT_SUCCESS = 0, NK_CONVERT_INVALID_PARAM = 1, NK_CONVERT_COMMAND_BUFFER_FULL = NK_FLAG(1), NK_CONVERT_VERTEX_BUFFER_FULL = NK_FLAG(2), NK_CONVERT_ELEMENT_BUFFER_FULL = NK_FLAG(3) }; struct nk_draw_null_texture { nk_handle texture; /* texture handle to a texture with a white pixel */ struct nk_vec2 uv; /* coordinates to a white pixel in the texture */ }; struct nk_convert_config { float global_alpha; /* global alpha value */ enum nk_anti_aliasing line_AA; /* line anti-aliasing flag can be turned off if you are tight on memory */ enum nk_anti_aliasing shape_AA; /* shape anti-aliasing flag can be turned off if you are tight on memory */ unsigned circle_segment_count; /* number of segments used for circles: default to 22 */ unsigned arc_segment_count; /* number of segments used for arcs: default to 22 */ unsigned curve_segment_count; /* number of segments used for curves: default to 22 */ struct nk_draw_null_texture null; /* handle to texture with a white pixel for shape drawing */ const struct nk_draw_vertex_layout_element *vertex_layout; /* describes the vertex output format and packing */ nk_size vertex_size; /* sizeof one vertex for vertex packing */ nk_size vertex_alignment; /* vertex alignment: Can be obtained by NK_ALIGNOF */ }; /*/// #### nk__begin /// Returns a draw command list iterator to iterate all draw /// commands accumulated over one frame. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command* nk__begin(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | must point to an previously initialized `nk_context` struct at the end of a frame /// /// Returns draw command pointer pointing to the first command inside the draw command list */ NK_API const struct nk_command* nk__begin(struct nk_context*); /*/// #### nk__next /// Returns draw command pointer pointing to the next command inside the draw command list /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command* nk__next(struct nk_context*, const struct nk_command*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmd__ | Must point to an previously a draw command either returned by `nk__begin` or `nk__next` /// /// Returns draw command pointer pointing to the next command inside the draw command list */ NK_API const struct nk_command* nk__next(struct nk_context*, const struct nk_command*); /*/// #### nk_foreach /// Iterates over each draw command inside the context draw command list /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_foreach(c, ctx) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmd__ | Command pointer initialized to NULL /// /// Iterates over each draw command inside the context draw command list */ #define nk_foreach(c, ctx) for((c) = nk__begin(ctx); (c) != 0; (c) = nk__next(ctx,c)) #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT /*/// #### nk_convert /// Converts all internal draw commands into vertex draw commands and fills /// three buffers with vertexes, vertex draw commands and vertex indices. The vertex format /// as well as some other configuration values have to be configured by filling out a /// `nk_convert_config` struct. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// nk_flags nk_convert(struct nk_context *ctx, struct nk_buffer *cmds, /// struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmds__ | Must point to a previously initialized buffer to hold converted vertex draw commands /// __vertices__| Must point to a previously initialized buffer to hold all produced vertices /// __elements__| Must point to a previously initialized buffer to hold all produced vertex indices /// __config__ | Must point to a filled out `nk_config` struct to configure the conversion process /// /// Returns one of enum nk_convert_result error codes /// /// Parameter | Description /// --------------------------------|----------------------------------------------------------- /// NK_CONVERT_SUCCESS | Signals a successful draw command to vertex buffer conversion /// NK_CONVERT_INVALID_PARAM | An invalid argument was passed in the function call /// NK_CONVERT_COMMAND_BUFFER_FULL | The provided buffer for storing draw commands is full or failed to allocate more memory /// NK_CONVERT_VERTEX_BUFFER_FULL | The provided buffer for storing vertices is full or failed to allocate more memory /// NK_CONVERT_ELEMENT_BUFFER_FULL | The provided buffer for storing indicies is full or failed to allocate more memory */ NK_API nk_flags nk_convert(struct nk_context*, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config*); /*/// #### nk__draw_begin /// Returns a draw vertex command buffer iterator to iterate over the vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_begin(const struct nk_context*, const struct nk_buffer*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// /// Returns vertex draw command pointer pointing to the first command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_begin(const struct nk_context*, const struct nk_buffer*); /*/// #### nk__draw_end /// Returns the vertex draw command at the end of the vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_end(const struct nk_context *ctx, const struct nk_buffer *buf); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// /// Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_end(const struct nk_context*, const struct nk_buffer*); /*/// #### nk__draw_next /// Increments the vertex draw command buffer iterator /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __cmd__ | Must point to an previously either by `nk__draw_begin` or `nk__draw_next` returned vertex draw command /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// /// Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_context*); /*/// #### nk_draw_foreach /// Iterates over each vertex draw command inside a vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_draw_foreach(cmd,ctx, b) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __cmd__ | `nk_draw_command`iterator set to NULL /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame */ #define nk_draw_foreach(cmd,ctx, b) for((cmd)=nk__draw_begin(ctx, b); (cmd)!=0; (cmd)=nk__draw_next(cmd, b, ctx)) #endif /* ============================================================================= * * WINDOW * * ============================================================================= /// ### Window /// Windows are the main persistent state used inside nuklear and are life time /// controlled by simply "retouching" (i.e. calling) each window each frame. /// All widgets inside nuklear can only be added inside the function pair `nk_begin_xxx` /// and `nk_end`. Calling any widgets outside these two functions will result in an /// assert in debug or no state change in release mode.

/// /// Each window holds frame persistent state like position, size, flags, state tables, /// and some garbage collected internal persistent widget state. Each window /// is linked into a window stack list which determines the drawing and overlapping /// order. The topmost window thereby is the currently active window.

/// /// To change window position inside the stack occurs either automatically by /// user input by being clicked on or programmatically by calling `nk_window_focus`. /// Windows by default are visible unless explicitly being defined with flag /// `NK_WINDOW_HIDDEN`, the user clicked the close button on windows with flag /// `NK_WINDOW_CLOSABLE` or if a window was explicitly hidden by calling /// `nk_window_show`. To explicitly close and destroy a window call `nk_window_close`.

/// /// #### Usage /// To create and keep a window you have to call one of the two `nk_begin_xxx` /// functions to start window declarations and `nk_end` at the end. Furthermore it /// is recommended to check the return value of `nk_begin_xxx` and only process /// widgets inside the window if the value is not 0. Either way you have to call /// `nk_end` at the end of window declarations. Furthermore, do not attempt to /// nest `nk_begin_xxx` calls which will hopefully result in an assert or if not /// in a segmentation fault. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // [... widgets ...] /// } /// nk_end(ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In the grand concept window and widget declarations need to occur after input /// handling and before drawing to screen. Not doing so can result in higher /// latency or at worst invalid behavior. Furthermore make sure that `nk_clear` /// is called at the end of the frame. While nuklear's default platform backends /// already call `nk_clear` for you if you write your own backend not calling /// `nk_clear` can cause asserts or even worse undefined behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// /// if (nk_begin_xxx(...) { /// //[...] /// } /// nk_end(ctx); /// /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case //...: /// //[...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ------------------------------------|---------------------------------------- /// nk_begin | Starts a new window; needs to be called every frame for every window (unless hidden) or otherwise the window gets removed /// nk_begin_titled | Extended window start with separated title and identifier to allow multiple windows with same name but not title /// nk_end | Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup // /// nk_window_find | Finds and returns the window with give name /// nk_window_get_bounds | Returns a rectangle with screen position and size of the currently processed window. /// nk_window_get_position | Returns the position of the currently processed window /// nk_window_get_size | Returns the size with width and height of the currently processed window /// nk_window_get_width | Returns the width of the currently processed window /// nk_window_get_height | Returns the height of the currently processed window /// nk_window_get_panel | Returns the underlying panel which contains all processing state of the current window /// nk_window_get_content_region | Returns the position and size of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_min | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_max | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_size | Returns the size of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_canvas | Returns the draw command buffer. Can be used to draw custom widgets /// nk_window_get_scroll | Gets the scroll offset of the current window /// nk_window_has_focus | Returns if the currently processed window is currently active /// nk_window_is_collapsed | Returns if the window with given name is currently minimized/collapsed /// nk_window_is_closed | Returns if the currently processed window was closed /// nk_window_is_hidden | Returns if the currently processed window was hidden /// nk_window_is_active | Same as nk_window_has_focus for some reason /// nk_window_is_hovered | Returns if the currently processed window is currently being hovered by mouse /// nk_window_is_any_hovered | Return if any window currently hovered /// nk_item_is_any_active | Returns if any window or widgets is currently hovered or active // /// nk_window_set_bounds | Updates position and size of the currently processed window /// nk_window_set_position | Updates position of the currently process window /// nk_window_set_size | Updates the size of the currently processed window /// nk_window_set_focus | Set the currently processed window as active window /// nk_window_set_scroll | Sets the scroll offset of the current window // /// nk_window_close | Closes the window with given window name which deletes the window at the end of the frame /// nk_window_collapse | Collapses the window with given window name /// nk_window_collapse_if | Collapses the window with given window name if the given condition was met /// nk_window_show | Hides a visible or reshows a hidden window /// nk_window_show_if | Hides/shows a window depending on condition */ /* /// #### nk_panel_flags /// Flag | Description /// ----------------------------|---------------------------------------- /// NK_WINDOW_BORDER | Draws a border around the window to visually separate window from the background /// NK_WINDOW_MOVABLE | The movable flag indicates that a window can be moved by user input or by dragging the window header /// NK_WINDOW_SCALABLE | The scalable flag indicates that a window can be scaled by user input by dragging a scaler icon at the button of the window /// NK_WINDOW_CLOSABLE | Adds a closable icon into the header /// NK_WINDOW_MINIMIZABLE | Adds a minimize icon into the header /// NK_WINDOW_NO_SCROLLBAR | Removes the scrollbar from the window /// NK_WINDOW_TITLE | Forces a header at the top at the window showing the title /// NK_WINDOW_SCROLL_AUTO_HIDE | Automatically hides the window scrollbar if no user interaction: also requires delta time in `nk_context` to be set each frame /// NK_WINDOW_BACKGROUND | Always keep window in the background /// NK_WINDOW_SCALE_LEFT | Puts window scaler in the left-bottom corner instead right-bottom /// NK_WINDOW_NO_INPUT | Prevents window of scaling, moving or getting focus /// /// #### nk_collapse_states /// State | Description /// ----------------|----------------------------------------------------------- /// __NK_MINIMIZED__| UI section is collased and not visibile until maximized /// __NK_MAXIMIZED__| UI section is extended and visibile until minimized ///

*/ enum nk_panel_flags { NK_WINDOW_BORDER = NK_FLAG(0), NK_WINDOW_MOVABLE = NK_FLAG(1), NK_WINDOW_SCALABLE = NK_FLAG(2), NK_WINDOW_CLOSABLE = NK_FLAG(3), NK_WINDOW_MINIMIZABLE = NK_FLAG(4), NK_WINDOW_NO_SCROLLBAR = NK_FLAG(5), NK_WINDOW_TITLE = NK_FLAG(6), NK_WINDOW_SCROLL_AUTO_HIDE = NK_FLAG(7), NK_WINDOW_BACKGROUND = NK_FLAG(8), NK_WINDOW_SCALE_LEFT = NK_FLAG(9), NK_WINDOW_NO_INPUT = NK_FLAG(10) }; /*/// #### nk_begin /// Starts a new window; needs to be called every frame for every /// window (unless hidden) or otherwise the window gets removed /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __title__ | Window title and identifier. Needs to be persistent over frames to identify the window /// __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors /// /// Returns `true(1)` if the window can be filled up with widgets from this point /// until `nk_end` or `false(0)` otherwise for example if minimized */ NK_API int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags); /*/// #### nk_begin_titled /// Extended window start with separated title and identifier to allow multiple /// windows with same title but not name /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Window identifier. Needs to be persistent over frames to identify the window /// __title__ | Window title displayed inside header if flag `NK_WINDOW_TITLE` or either `NK_WINDOW_CLOSABLE` or `NK_WINDOW_MINIMIZED` was set /// __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors /// /// Returns `true(1)` if the window can be filled up with widgets from this point /// until `nk_end` or `false(0)` otherwise for example if minimized */ NK_API int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags); /*/// #### nk_end /// Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup. /// All widget calls after this functions will result in asserts or no state changes /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_end(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_end(struct nk_context *ctx); /*/// #### nk_window_find /// Finds and returns a window from passed name /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_window *nk_window_find(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Window identifier /// /// Returns a `nk_window` struct pointing to the identified window or NULL if /// no window with the given name was found */ NK_API struct nk_window *nk_window_find(struct nk_context *ctx, const char *name); /*/// #### nk_window_get_bounds /// Returns a rectangle with screen position and size of the currently processed window /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_window_get_bounds(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_rect` struct with window upper left window position and size */ NK_API struct nk_rect nk_window_get_bounds(const struct nk_context *ctx); /*/// #### nk_window_get_position /// Returns the position of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_position(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_vec2` struct with window upper left position */ NK_API struct nk_vec2 nk_window_get_position(const struct nk_context *ctx); /*/// #### nk_window_get_size /// Returns the size with width and height of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_size(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_vec2` struct with window width and height */ NK_API struct nk_vec2 nk_window_get_size(const struct nk_context*); /*/// #### nk_window_get_width /// Returns the width of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_window_get_width(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns the current window width */ NK_API float nk_window_get_width(const struct nk_context*); /*/// #### nk_window_get_height /// Returns the height of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_window_get_height(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns the current window height */ NK_API float nk_window_get_height(const struct nk_context*); /*/// #### nk_window_get_panel /// Returns the underlying panel which contains all processing state of the current window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// !!! WARNING /// Do not keep the returned panel pointer around, it is only valid until `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_panel* nk_window_get_panel(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a pointer to window internal `nk_panel` state. */ NK_API struct nk_panel* nk_window_get_panel(struct nk_context*); /*/// #### nk_window_get_content_region /// Returns the position and size of the currently visible and non-clipped space /// inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_window_get_content_region(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_rect` struct with screen position and size (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_rect nk_window_get_content_region(struct nk_context*); /*/// #### nk_window_get_content_region_min /// Returns the upper left position of the currently visible and non-clipped /// space inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_min(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// returns `nk_vec2` struct with upper left screen position (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_min(struct nk_context*); /*/// #### nk_window_get_content_region_max /// Returns the lower right screen position of the currently visible and /// non-clipped space inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_max(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_vec2` struct with lower right screen position (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_max(struct nk_context*); /*/// #### nk_window_get_content_region_size /// Returns the size of the currently visible and non-clipped space inside the /// currently processed window /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_size(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_vec2` struct with size the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_size(struct nk_context*); /*/// #### nk_window_get_canvas /// Returns the draw command buffer. Can be used to draw custom widgets /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// !!! WARNING /// Do not keep the returned command buffer pointer around it is only valid until `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_command_buffer* nk_window_get_canvas(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a pointer to window internal `nk_command_buffer` struct used as /// drawing canvas. Can be used to do custom drawing. */ NK_API struct nk_command_buffer* nk_window_get_canvas(struct nk_context*); /*/// #### nk_window_get_scroll /// Gets the scroll offset for the current window /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __offset_x__ | A pointer to the x offset output (or NULL to ignore) /// __offset_y__ | A pointer to the y offset output (or NULL to ignore) */ NK_API void nk_window_get_scroll(struct nk_context*, nk_uint *offset_x, nk_uint *offset_y); /*/// #### nk_window_has_focus /// Returns if the currently processed window is currently active /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_has_focus(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `false(0)` if current window is not active or `true(1)` if it is */ NK_API int nk_window_has_focus(const struct nk_context*); /*/// #### nk_window_is_hovered /// Return if the current window is being hovered /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_hovered(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if current window is hovered or `false(0)` otherwise */ NK_API int nk_window_is_hovered(struct nk_context*); /*/// #### nk_window_is_collapsed /// Returns if the window with given name is currently minimized/collapsed /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_collapsed(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is collapsed /// /// Returns `true(1)` if current window is minimized and `false(0)` if window not /// found or is not minimized */ NK_API int nk_window_is_collapsed(struct nk_context *ctx, const char *name); /*/// #### nk_window_is_closed /// Returns if the window with given name was closed by calling `nk_close` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_closed(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is closed /// /// Returns `true(1)` if current window was closed or `false(0)` window not found or not closed */ NK_API int nk_window_is_closed(struct nk_context*, const char*); /*/// #### nk_window_is_hidden /// Returns if the window with given name is hidden /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_hidden(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is hidden /// /// Returns `true(1)` if current window is hidden or `false(0)` window not found or visible */ NK_API int nk_window_is_hidden(struct nk_context*, const char*); /*/// #### nk_window_is_active /// Same as nk_window_has_focus for some reason /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_active(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is active /// /// Returns `true(1)` if current window is active or `false(0)` window not found or not active */ NK_API int nk_window_is_active(struct nk_context*, const char*); /*/// #### nk_window_is_any_hovered /// Returns if the any window is being hovered /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_any_hovered(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if any window is hovered or `false(0)` otherwise */ NK_API int nk_window_is_any_hovered(struct nk_context*); /*/// #### nk_item_is_any_active /// Returns if the any window is being hovered or any widget is currently active. /// Can be used to decide if input should be processed by UI or your specific input handling. /// Example could be UI and 3D camera to move inside a 3D space. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_item_is_any_active(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if any window is hovered or any item is active or `false(0)` otherwise */ NK_API int nk_item_is_any_active(struct nk_context*); /*/// #### nk_window_set_bounds /// Updates position and size of window with passed in name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_bounds(struct nk_context*, const char *name, struct nk_rect bounds); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both position and size /// __bounds__ | Must point to a `nk_rect` struct with the new position and size */ NK_API void nk_window_set_bounds(struct nk_context*, const char *name, struct nk_rect bounds); /*/// #### nk_window_set_position /// Updates position of window with passed name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_position(struct nk_context*, const char *name, struct nk_vec2 pos); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both position /// __pos__ | Must point to a `nk_vec2` struct with the new position */ NK_API void nk_window_set_position(struct nk_context*, const char *name, struct nk_vec2 pos); /*/// #### nk_window_set_size /// Updates size of window with passed in name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_size(struct nk_context*, const char *name, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both window size /// __size__ | Must point to a `nk_vec2` struct with new window size */ NK_API void nk_window_set_size(struct nk_context*, const char *name, struct nk_vec2); /*/// #### nk_window_set_focus /// Sets the window with given name as active /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_focus(struct nk_context*, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to set focus on */ NK_API void nk_window_set_focus(struct nk_context*, const char *name); /*/// #### nk_window_set_scroll /// Sets the scroll offset for the current window /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __offset_x__ | The x offset to scroll to /// __offset_y__ | The y offset to scroll to */ NK_API void nk_window_set_scroll(struct nk_context*, nk_uint offset_x, nk_uint offset_y); /*/// #### nk_window_close /// Closes a window and marks it for being freed at the end of the frame /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_close(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to close */ NK_API void nk_window_close(struct nk_context *ctx, const char *name); /*/// #### nk_window_collapse /// Updates collapse state of a window with given name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_collapse(struct nk_context*, const char *name, enum nk_collapse_states state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to close /// __state__ | value out of nk_collapse_states section */ NK_API void nk_window_collapse(struct nk_context*, const char *name, enum nk_collapse_states state); /*/// #### nk_window_collapse_if /// Updates collapse state of a window with given name if given condition is met /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_collapse_if(struct nk_context*, const char *name, enum nk_collapse_states, int cond); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either collapse or maximize /// __state__ | value out of nk_collapse_states section the window should be put into /// __cond__ | condition that has to be met to actually commit the collapse state change */ NK_API void nk_window_collapse_if(struct nk_context*, const char *name, enum nk_collapse_states, int cond); /*/// #### nk_window_show /// updates visibility state of a window with given name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_show(struct nk_context*, const char *name, enum nk_show_states); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either collapse or maximize /// __state__ | state with either visible or hidden to modify the window with */ NK_API void nk_window_show(struct nk_context*, const char *name, enum nk_show_states); /*/// #### nk_window_show_if /// Updates visibility state of a window with given name if a given condition is met /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_show_if(struct nk_context*, const char *name, enum nk_show_states, int cond); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either hide or show /// __state__ | state with either visible or hidden to modify the window with /// __cond__ | condition that has to be met to actually commit the visbility state change */ NK_API void nk_window_show_if(struct nk_context*, const char *name, enum nk_show_states, int cond); /* ============================================================================= * * LAYOUT * * ============================================================================= /// ### Layouting /// Layouting in general describes placing widget inside a window with position and size. /// While in this particular implementation there are five different APIs for layouting /// each with different trade offs between control and ease of use.

/// /// All layouting methods in this library are based around the concept of a row. /// A row has a height the window content grows by and a number of columns and each /// layouting method specifies how each widget is placed inside the row. /// After a row has been allocated by calling a layouting functions and then /// filled with widgets will advance an internal pointer over the allocated row.

/// /// To actually define a layout you just call the appropriate layouting function /// and each subsequent widget call will place the widget as specified. Important /// here is that if you define more widgets then columns defined inside the layout /// functions it will allocate the next row without you having to make another layouting

/// call. /// /// Biggest limitation with using all these APIs outside the `nk_layout_space_xxx` API /// is that you have to define the row height for each. However the row height /// often depends on the height of the font.

/// /// To fix that internally nuklear uses a minimum row height that is set to the /// height plus padding of currently active font and overwrites the row height /// value if zero.

/// /// If you manually want to change the minimum row height then /// use nk_layout_set_min_row_height, and use nk_layout_reset_min_row_height to /// reset it back to be derived from font height.

/// /// Also if you change the font in nuklear it will automatically change the minimum /// row height for you and. This means if you change the font but still want /// a minimum row height smaller than the font you have to repush your value.

/// /// For actually more advanced UI I would even recommend using the `nk_layout_space_xxx` /// layouting method in combination with a cassowary constraint solver (there are /// some versions on github with permissive license model) to take over all control over widget /// layouting yourself. However for quick and dirty layouting using all the other layouting /// functions should be fine. /// /// #### Usage /// 1. __nk_layout_row_dynamic__

/// The easiest layouting function is `nk_layout_row_dynamic`. It provides each /// widgets with same horizontal space inside the row and dynamically grows /// if the owning window grows in width. So the number of columns dictates /// the size of each widget dynamically by formula: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// widget_width = (window_width - padding - spacing) * (1/colum_count) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Just like all other layouting APIs if you define more widget than columns this /// library will allocate a new row and keep all layouting parameters previously /// defined. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 30 composed of two widgets /// nk_layout_row_dynamic(&ctx, 30, 2); /// nk_widget(...); /// nk_widget(...); /// // /// // second row with same parameter as defined above /// nk_widget(...); /// nk_widget(...); /// // /// // third row uses 0 for height which will use auto layouting /// nk_layout_row_dynamic(&ctx, 0, 2); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 2. __nk_layout_row_static__

/// Another easy layouting function is `nk_layout_row_static`. It provides each /// widget with same horizontal pixel width inside the row and does not grow /// if the owning window scales smaller or bigger. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 30 composed of two widgets with width: 80 /// nk_layout_row_static(&ctx, 30, 80, 2); /// nk_widget(...); /// nk_widget(...); /// // /// // second row with same parameter as defined above /// nk_widget(...); /// nk_widget(...); /// // /// // third row uses 0 for height which will use auto layouting /// nk_layout_row_static(&ctx, 0, 80, 2); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 3. __nk_layout_row_xxx__

/// A little bit more advanced layouting API are functions `nk_layout_row_begin`, /// `nk_layout_row_push` and `nk_layout_row_end`. They allow to directly /// specify each column pixel or window ratio in a row. It supports either /// directly setting per column pixel width or widget window ratio but not /// both. Furthermore it is a immediate mode API so each value is directly /// pushed before calling a widget. Therefore the layout is not automatically /// repeating like the last two layouting functions. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 25 composed of two widgets with width 60 and 40 /// nk_layout_row_begin(ctx, NK_STATIC, 25, 2); /// nk_layout_row_push(ctx, 60); /// nk_widget(...); /// nk_layout_row_push(ctx, 40); /// nk_widget(...); /// nk_layout_row_end(ctx); /// // /// // second row with height: 25 composed of two widgets with window ratio 0.25 and 0.75 /// nk_layout_row_begin(ctx, NK_DYNAMIC, 25, 2); /// nk_layout_row_push(ctx, 0.25f); /// nk_widget(...); /// nk_layout_row_push(ctx, 0.75f); /// nk_widget(...); /// nk_layout_row_end(ctx); /// // /// // third row with auto generated height: composed of two widgets with window ratio 0.25 and 0.75 /// nk_layout_row_begin(ctx, NK_DYNAMIC, 0, 2); /// nk_layout_row_push(ctx, 0.25f); /// nk_widget(...); /// nk_layout_row_push(ctx, 0.75f); /// nk_widget(...); /// nk_layout_row_end(ctx); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 4. __nk_layout_row__

/// The array counterpart to API nk_layout_row_xxx is the single nk_layout_row /// functions. Instead of pushing either pixel or window ratio for every widget /// it allows to define it by array. The trade of for less control is that /// `nk_layout_row` is automatically repeating. Otherwise the behavior is the /// same. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // two rows with height: 30 composed of two widgets with width 60 and 40 /// const float size[] = {60,40}; /// nk_layout_row(ctx, NK_STATIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// // /// // two rows with height: 30 composed of two widgets with window ratio 0.25 and 0.75 /// const float ratio[] = {0.25, 0.75}; /// nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// // /// // two rows with auto generated height composed of two widgets with window ratio 0.25 and 0.75 /// const float ratio[] = {0.25, 0.75}; /// nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 5. __nk_layout_row_template_xxx__

/// The most complex and second most flexible API is a simplified flexbox version without /// line wrapping and weights for dynamic widgets. It is an immediate mode API but /// unlike `nk_layout_row_xxx` it has auto repeat behavior and needs to be called /// before calling the templated widgets. /// The row template layout has three different per widget size specifier. The first /// one is the `nk_layout_row_template_push_static` with fixed widget pixel width. /// They do not grow if the row grows and will always stay the same. /// The second size specifier is `nk_layout_row_template_push_variable` /// which defines a minimum widget size but it also can grow if more space is available /// not taken by other widgets. /// Finally there are dynamic widgets with `nk_layout_row_template_push_dynamic` /// which are completely flexible and unlike variable widgets can even shrink /// to zero if not enough space is provided. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // two rows with height: 30 composed of three widgets /// nk_layout_row_template_begin(ctx, 30); /// nk_layout_row_template_push_dynamic(ctx); /// nk_layout_row_template_push_variable(ctx, 80); /// nk_layout_row_template_push_static(ctx, 80); /// nk_layout_row_template_end(ctx); /// // /// // first row /// nk_widget(...); // dynamic widget can go to zero if not enough space /// nk_widget(...); // variable widget with min 80 pixel but can grow bigger if enough space /// nk_widget(...); // static widget with fixed 80 pixel width /// // /// // second row same layout /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 6. __nk_layout_space_xxx__

/// Finally the most flexible API directly allows you to place widgets inside the /// window. The space layout API is an immediate mode API which does not support /// row auto repeat and directly sets position and size of a widget. Position /// and size hereby can be either specified as ratio of allocated space or /// allocated space local position and pixel size. Since this API is quite /// powerful there are a number of utility functions to get the available space /// and convert between local allocated space and screen space. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // static row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) /// nk_layout_space_begin(ctx, NK_STATIC, 500, INT_MAX); /// nk_layout_space_push(ctx, nk_rect(0,0,150,200)); /// nk_widget(...); /// nk_layout_space_push(ctx, nk_rect(200,200,100,200)); /// nk_widget(...); /// nk_layout_space_end(ctx); /// // /// // dynamic row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) /// nk_layout_space_begin(ctx, NK_DYNAMIC, 500, INT_MAX); /// nk_layout_space_push(ctx, nk_rect(0.5,0.5,0.1,0.1)); /// nk_widget(...); /// nk_layout_space_push(ctx, nk_rect(0.7,0.6,0.1,0.1)); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ----------------------------------------|------------------------------------ /// nk_layout_set_min_row_height | Set the currently used minimum row height to a specified value /// nk_layout_reset_min_row_height | Resets the currently used minimum row height to font height /// nk_layout_widget_bounds | Calculates current width a static layout row can fit inside a window /// nk_layout_ratio_from_pixel | Utility functions to calculate window ratio from pixel size // /// nk_layout_row_dynamic | Current layout is divided into n same sized growing columns /// nk_layout_row_static | Current layout is divided into n same fixed sized columns /// nk_layout_row_begin | Starts a new row with given height and number of columns /// nk_layout_row_push | Pushes another column with given size or window ratio /// nk_layout_row_end | Finished previously started row /// nk_layout_row | Specifies row columns in array as either window ratio or size // /// nk_layout_row_template_begin | Begins the row template declaration /// nk_layout_row_template_push_dynamic | Adds a dynamic column that dynamically grows and can go to zero if not enough space /// nk_layout_row_template_push_variable | Adds a variable column that dynamically grows but does not shrink below specified pixel width /// nk_layout_row_template_push_static | Adds a static column that does not grow and will always have the same size /// nk_layout_row_template_end | Marks the end of the row template // /// nk_layout_space_begin | Begins a new layouting space that allows to specify each widgets position and size /// nk_layout_space_push | Pushes position and size of the next widget in own coordinate space either as pixel or ratio /// nk_layout_space_end | Marks the end of the layouting space // /// nk_layout_space_bounds | Callable after nk_layout_space_begin and returns total space allocated /// nk_layout_space_to_screen | Converts vector from nk_layout_space coordinate space into screen space /// nk_layout_space_to_local | Converts vector from screen space into nk_layout_space coordinates /// nk_layout_space_rect_to_screen | Converts rectangle from nk_layout_space coordinate space into screen space /// nk_layout_space_rect_to_local | Converts rectangle from screen space into nk_layout_space coordinates */ /*/// #### nk_layout_set_min_row_height /// Sets the currently used minimum row height. /// !!! WARNING /// The passed height needs to include both your preferred row height /// as well as padding. No internal padding is added. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_set_min_row_height(struct nk_context*, float height); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | New minimum row height to be used for auto generating the row height */ NK_API void nk_layout_set_min_row_height(struct nk_context*, float height); /*/// #### nk_layout_reset_min_row_height /// Reset the currently used minimum row height back to `font_height + text_padding + padding` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_reset_min_row_height(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_reset_min_row_height(struct nk_context*); /*/// #### nk_layout_widget_bounds /// Returns the width of the next row allocate by one of the layouting functions /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_widget_bounds(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// /// Return `nk_rect` with both position and size of the next row */ NK_API struct nk_rect nk_layout_widget_bounds(struct nk_context*); /*/// #### nk_layout_ratio_from_pixel /// Utility functions to calculate window ratio from pixel size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_layout_ratio_from_pixel(struct nk_context*, float pixel_width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __pixel__ | Pixel_width to convert to window ratio /// /// Returns `nk_rect` with both position and size of the next row */ NK_API float nk_layout_ratio_from_pixel(struct nk_context*, float pixel_width); /*/// #### nk_layout_row_dynamic /// Sets current row layout to share horizontal space /// between @cols number of widgets evenly. Once called all subsequent widget /// calls greater than @cols will allocate a new row with same layout. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols); /*/// #### nk_layout_row_static /// Sets current row layout to fill @cols number of widgets /// in row with same @item_width horizontal size. Once called all subsequent widget /// calls greater than @cols will allocate a new row with same layout. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting /// __width__ | Holds pixel width of each widget in the row /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols); /*/// #### nk_layout_row_begin /// Starts a new dynamic or fixed row with given height and columns. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols); /*/// #### nk_layout_row_push /// Specifies either window ratio or width of a single column /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_push(struct nk_context*, float value); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __value__ | either a window ratio or fixed width depending on @fmt in previous `nk_layout_row_begin` call */ NK_API void nk_layout_row_push(struct nk_context*, float value); /*/// #### nk_layout_row_end /// Finished previously started row /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_row_end(struct nk_context*); /*/// #### nk_layout_row /// Specifies row columns in array as either window ratio or size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row(struct nk_context*, enum nk_layout_format, float height, int cols, const float *ratio); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row(struct nk_context*, enum nk_layout_format, float height, int cols, const float *ratio); /*/// #### nk_layout_row_template_begin /// Begins the row template declaration /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_begin(struct nk_context*, float row_height); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting */ NK_API void nk_layout_row_template_begin(struct nk_context*, float row_height); /*/// #### nk_layout_row_template_push_dynamic /// Adds a dynamic column that dynamically grows and can go to zero if not enough space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_dynamic(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting */ NK_API void nk_layout_row_template_push_dynamic(struct nk_context*); /*/// #### nk_layout_row_template_push_variable /// Adds a variable column that dynamically grows but does not shrink below specified pixel width /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_variable(struct nk_context*, float min_width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __width__ | Holds the minimum pixel width the next column must always be */ NK_API void nk_layout_row_template_push_variable(struct nk_context*, float min_width); /*/// #### nk_layout_row_template_push_static /// Adds a static column that does not grow and will always have the same size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_static(struct nk_context*, float width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __width__ | Holds the absolute pixel width value the next column must be */ NK_API void nk_layout_row_template_push_static(struct nk_context*, float width); /*/// #### nk_layout_row_template_end /// Marks the end of the row template /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_row_template_end(struct nk_context*); /*/// #### nk_layout_space_begin /// Begins a new layouting space that allows to specify each widgets position and size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_begin(struct nk_context*, enum nk_layout_format, float height, int widget_count); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widgets inside row */ NK_API void nk_layout_space_begin(struct nk_context*, enum nk_layout_format, float height, int widget_count); /*/// #### nk_layout_space_push /// Pushes position and size of the next widget in own coordinate space either as pixel or ratio /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_push(struct nk_context *ctx, struct nk_rect bounds); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Position and size in laoyut space local coordinates */ NK_API void nk_layout_space_push(struct nk_context*, struct nk_rect bounds); /*/// #### nk_layout_space_end /// Marks the end of the layout space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` */ NK_API void nk_layout_space_end(struct nk_context*); /*/// #### nk_layout_space_bounds /// Utility function to calculate total space allocated for `nk_layout_space` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_bounds(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// /// Returns `nk_rect` holding the total space allocated */ NK_API struct nk_rect nk_layout_space_bounds(struct nk_context*); /*/// #### nk_layout_space_to_screen /// Converts vector from nk_layout_space coordinate space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_layout_space_to_screen(struct nk_context*, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __vec__ | Position to convert from layout space into screen coordinate space /// /// Returns transformed `nk_vec2` in screen space coordinates */ NK_API struct nk_vec2 nk_layout_space_to_screen(struct nk_context*, struct nk_vec2); /*/// #### nk_layout_space_to_local /// Converts vector from layout space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_layout_space_to_local(struct nk_context*, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __vec__ | Position to convert from screen space into layout coordinate space /// /// Returns transformed `nk_vec2` in layout space coordinates */ NK_API struct nk_vec2 nk_layout_space_to_local(struct nk_context*, struct nk_vec2); /*/// #### nk_layout_space_rect_to_screen /// Converts rectangle from screen space into layout space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_rect_to_screen(struct nk_context*, struct nk_rect); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Rectangle to convert from layout space into screen space /// /// Returns transformed `nk_rect` in screen space coordinates */ NK_API struct nk_rect nk_layout_space_rect_to_screen(struct nk_context*, struct nk_rect); /*/// #### nk_layout_space_rect_to_local /// Converts rectangle from layout space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_rect_to_local(struct nk_context*, struct nk_rect); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Rectangle to convert from layout space into screen space /// /// Returns transformed `nk_rect` in layout space coordinates */ NK_API struct nk_rect nk_layout_space_rect_to_local(struct nk_context*, struct nk_rect); /* ============================================================================= * * GROUP * * ============================================================================= /// ### Groups /// Groups are basically windows inside windows. They allow to subdivide space /// in a window to layout widgets as a group. Almost all more complex widget /// layouting requirements can be solved using groups and basic layouting /// fuctionality. Groups just like windows are identified by an unique name and /// internally keep track of scrollbar offsets by default. However additional /// versions are provided to directly manage the scrollbar. /// /// #### Usage /// To create a group you have to call one of the three `nk_group_begin_xxx` /// functions to start group declarations and `nk_group_end` at the end. Furthermore it /// is required to check the return value of `nk_group_begin_xxx` and only process /// widgets inside the window if the value is not 0. /// Nesting groups is possible and even encouraged since many layouting schemes /// can only be achieved by nesting. Groups, unlike windows, need `nk_group_end` /// to be only called if the corosponding `nk_group_begin_xxx` call does not return 0: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_group_begin_xxx(ctx, ...) { /// // [... widgets ...] /// nk_group_end(ctx); /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In the grand concept groups can be called after starting a window /// with `nk_begin_xxx` and before calling `nk_end`: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // Input /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// // /// // Window /// if (nk_begin_xxx(...) { /// // [...widgets...] /// nk_layout_row_dynamic(...); /// if (nk_group_begin_xxx(ctx, ...) { /// //[... widgets ...] /// nk_group_end(ctx); /// } /// } /// nk_end(ctx); /// // /// // Draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// #### Reference /// Function | Description /// --------------------------------|------------------------------------------- /// nk_group_begin | Start a new group with internal scrollbar handling /// nk_group_begin_titled | Start a new group with separeted name and title and internal scrollbar handling /// nk_group_end | Ends a group. Should only be called if nk_group_begin returned non-zero /// nk_group_scrolled_offset_begin | Start a new group with manual separated handling of scrollbar x- and y-offset /// nk_group_scrolled_begin | Start a new group with manual scrollbar handling /// nk_group_scrolled_end | Ends a group with manual scrollbar handling. Should only be called if nk_group_begin returned non-zero /// nk_group_get_scroll | Gets the scroll offset for the given group /// nk_group_set_scroll | Sets the scroll offset for the given group */ /*/// #### nk_group_begin /// Starts a new widget group. Requires a previous layouting function to specify a pos/size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_begin(struct nk_context*, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __title__ | Must be an unique identifier for this group that is also used for the group header /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_begin(struct nk_context*, const char *title, nk_flags); /*/// #### nk_group_begin_titled /// Starts a new widget group. Requires a previous layouting function to specify a pos/size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_begin_titled(struct nk_context*, const char *name, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | Must be an unique identifier for this group /// __title__ | Group header title /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_begin_titled(struct nk_context*, const char *name, const char *title, nk_flags); /*/// #### nk_group_end /// Ends a widget group /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_group_end(struct nk_context*); /*/// #### nk_group_scrolled_offset_begin /// starts a new widget group. requires a previous layouting function to specify /// a size. Does not keep track of scrollbar. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_scrolled_offset_begin(struct nk_context*, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __x_offset__| Scrollbar x-offset to offset all widgets inside the group horizontally. /// __y_offset__| Scrollbar y-offset to offset all widgets inside the group vertically /// __title__ | Window unique group title used to both identify and display in the group header /// __flags__ | Window flags from the nk_panel_flags section /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_scrolled_offset_begin(struct nk_context*, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags); /*/// #### nk_group_scrolled_begin /// Starts a new widget group. requires a previous /// layouting function to specify a size. Does not keep track of scrollbar. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_scrolled_begin(struct nk_context*, struct nk_scroll *off, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __off__ | Both x- and y- scroll offset. Allows for manual scrollbar control /// __title__ | Window unique group title used to both identify and display in the group header /// __flags__ | Window flags from nk_panel_flags section /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_scrolled_begin(struct nk_context*, struct nk_scroll *off, const char *title, nk_flags); /*/// #### nk_group_scrolled_end /// Ends a widget group after calling nk_group_scrolled_offset_begin or nk_group_scrolled_begin. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_scrolled_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_group_scrolled_end(struct nk_context*); /*/// #### nk_group_get_scroll /// Gets the scroll position of the given group. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_get_scroll(struct nk_context*, const char *id, nk_uint *x_offset, nk_uint *y_offset); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | The id of the group to get the scroll position of /// __x_offset__ | A pointer to the x offset output (or NULL to ignore) /// __y_offset__ | A pointer to the y offset output (or NULL to ignore) */ NK_API void nk_group_get_scroll(struct nk_context*, const char *id, nk_uint *x_offset, nk_uint *y_offset); /*/// #### nk_group_set_scroll /// Sets the scroll position of the given group. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_set_scroll(struct nk_context*, const char *id, nk_uint x_offset, nk_uint y_offset); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | The id of the group to scroll /// __x_offset__ | The x offset to scroll to /// __y_offset__ | The y offset to scroll to */ NK_API void nk_group_set_scroll(struct nk_context*, const char *id, nk_uint x_offset, nk_uint y_offset); /* ============================================================================= * * TREE * * ============================================================================= /// ### Tree /// Trees represent two different concept. First the concept of a collapsable /// UI section that can be either in a hidden or visibile state. They allow the UI /// user to selectively minimize the current set of visible UI to comprehend. /// The second concept are tree widgets for visual UI representation of trees.

/// /// Trees thereby can be nested for tree representations and multiple nested /// collapsable UI sections. All trees are started by calling of the /// `nk_tree_xxx_push_tree` functions and ended by calling one of the /// `nk_tree_xxx_pop_xxx()` functions. Each starting functions takes a title label /// and optionally an image to be displayed and the initial collapse state from /// the nk_collapse_states section.

/// /// The runtime state of the tree is either stored outside the library by the caller /// or inside which requires a unique ID. The unique ID can either be generated /// automatically from `__FILE__` and `__LINE__` with function `nk_tree_push`, /// by `__FILE__` and a user provided ID generated for example by loop index with /// function `nk_tree_push_id` or completely provided from outside by user with /// function `nk_tree_push_hashed`. /// /// #### Usage /// To create a tree you have to call one of the seven `nk_tree_xxx_push_xxx` /// functions to start a collapsable UI section and `nk_tree_xxx_pop` to mark the /// end. /// Each starting function will either return `false(0)` if the tree is collapsed /// or hidden and therefore does not need to be filled with content or `true(1)` /// if visible and required to be filled. /// /// !!! Note /// The tree header does not require and layouting function and instead /// calculates a auto height based on the currently used font size /// /// The tree ending functions only need to be called if the tree content is /// actually visible. So make sure the tree push function is guarded by `if` /// and the pop call is only taken if the tree is visible. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_tree_push(ctx, NK_TREE_TAB, "Tree", NK_MINIMIZED)) { /// nk_layout_row_dynamic(...); /// nk_widget(...); /// nk_tree_pop(ctx); /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ----------------------------|------------------------------------------- /// nk_tree_push | Start a collapsable UI section with internal state management /// nk_tree_push_id | Start a collapsable UI section with internal state management callable in a look /// nk_tree_push_hashed | Start a collapsable UI section with internal state management with full control over internal unique ID use to store state /// nk_tree_image_push | Start a collapsable UI section with image and label header /// nk_tree_image_push_id | Start a collapsable UI section with image and label header and internal state management callable in a look /// nk_tree_image_push_hashed | Start a collapsable UI section with image and label header and internal state management with full control over internal unique ID use to store state /// nk_tree_pop | Ends a collapsable UI section // /// nk_tree_state_push | Start a collapsable UI section with external state management /// nk_tree_state_image_push | Start a collapsable UI section with image and label header and external state management /// nk_tree_state_pop | Ends a collapsabale UI section /// /// #### nk_tree_type /// Flag | Description /// ----------------|---------------------------------------- /// NK_TREE_NODE | Highlighted tree header to mark a collapsable UI section /// NK_TREE_TAB | Non-highighted tree header closer to tree representations */ /*/// #### nk_tree_push /// Starts a collapsable UI section with internal state management /// !!! WARNING /// To keep track of the runtime tree collapsable state this function uses /// defines `__FILE__` and `__LINE__` to generate a unique ID. If you want /// to call this function in a loop please use `nk_tree_push_id` or /// `nk_tree_push_hashed` instead. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_push(ctx, type, title, state) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_push(ctx, type, title, state) nk_tree_push_hashed(ctx, type, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) /*/// #### nk_tree_push_id /// Starts a collapsable UI section with internal state management callable in a look /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_push_id(ctx, type, title, state, id) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __id__ | Loop counter index if this function is called in a loop /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_push_id(ctx, type, title, state, id) nk_tree_push_hashed(ctx, type, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) /*/// #### nk_tree_push_hashed /// Start a collapsable UI section with internal state management with full /// control over internal unique ID used to store state /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __hash__ | Memory block or string to generate the ID from /// __len__ | Size of passed memory block or string in __hash__ /// __seed__ | Seeding value if this function is called in a loop or default to `0` /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /*/// #### nk_tree_image_push /// Start a collapsable UI section with image and label header /// !!! WARNING /// To keep track of the runtime tree collapsable state this function uses /// defines `__FILE__` and `__LINE__` to generate a unique ID. If you want /// to call this function in a loop please use `nk_tree_image_push_id` or /// `nk_tree_image_push_hashed` instead. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_image_push(ctx, type, img, title, state) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_image_push(ctx, type, img, title, state) nk_tree_image_push_hashed(ctx, type, img, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) /*/// #### nk_tree_image_push_id /// Start a collapsable UI section with image and label header and internal state /// management callable in a look /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_image_push_id(ctx, type, img, title, state, id) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __id__ | Loop counter index if this function is called in a loop /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_image_push_id(ctx, type, img, title, state, id) nk_tree_image_push_hashed(ctx, type, img, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) /*/// #### nk_tree_image_push_hashed /// Start a collapsable UI section with internal state management with full /// control over internal unique ID used to store state /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __hash__ | Memory block or string to generate the ID from /// __len__ | Size of passed memory block or string in __hash__ /// __seed__ | Seeding value if this function is called in a loop or default to `0` /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /*/// #### nk_tree_pop /// Ends a collapsabale UI section /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_tree_pop(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` */ NK_API void nk_tree_pop(struct nk_context*); /*/// #### nk_tree_state_push /// Start a collapsable UI section with external state management /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_state_push(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states *state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Persistent state to update /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_state_push(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states *state); /*/// #### nk_tree_state_image_push /// Start a collapsable UI section with image and label header and external state management /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_state_image_push(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states *state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` /// __img__ | Image to display inside the header on the left of the label /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Persistent state to update /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_state_image_push(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states *state); /*/// #### nk_tree_state_pop /// Ends a collapsabale UI section /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_tree_state_pop(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` */ NK_API void nk_tree_state_pop(struct nk_context*); #define nk_tree_element_push(ctx, type, title, state, sel) nk_tree_element_push_hashed(ctx, type, title, state, sel, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) #define nk_tree_element_push_id(ctx, type, title, state, sel, id) nk_tree_element_push_hashed(ctx, type, title, state, sel, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) NK_API int nk_tree_element_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int seed); NK_API int nk_tree_element_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len,int seed); NK_API void nk_tree_element_pop(struct nk_context*); /* ============================================================================= * * LIST VIEW * * ============================================================================= */ struct nk_list_view { /* public: */ int begin, end, count; /* private: */ int total_height; struct nk_context *ctx; nk_uint *scroll_pointer; nk_uint scroll_value; }; NK_API int nk_list_view_begin(struct nk_context*, struct nk_list_view *out, const char *id, nk_flags, int row_height, int row_count); NK_API void nk_list_view_end(struct nk_list_view*); /* ============================================================================= * * WIDGET * * ============================================================================= */ enum nk_widget_layout_states { NK_WIDGET_INVALID, /* The widget cannot be seen and is completely out of view */ NK_WIDGET_VALID, /* The widget is completely inside the window and can be updated and drawn */ NK_WIDGET_ROM /* The widget is partially visible and cannot be updated */ }; enum nk_widget_states { NK_WIDGET_STATE_MODIFIED = NK_FLAG(1), NK_WIDGET_STATE_INACTIVE = NK_FLAG(2), /* widget is neither active nor hovered */ NK_WIDGET_STATE_ENTERED = NK_FLAG(3), /* widget has been hovered on the current frame */ NK_WIDGET_STATE_HOVER = NK_FLAG(4), /* widget is being hovered */ NK_WIDGET_STATE_ACTIVED = NK_FLAG(5),/* widget is currently activated */ NK_WIDGET_STATE_LEFT = NK_FLAG(6), /* widget is from this frame on not hovered anymore */ NK_WIDGET_STATE_HOVERED = NK_WIDGET_STATE_HOVER|NK_WIDGET_STATE_MODIFIED, /* widget is being hovered */ NK_WIDGET_STATE_ACTIVE = NK_WIDGET_STATE_ACTIVED|NK_WIDGET_STATE_MODIFIED /* widget is currently activated */ }; NK_API enum nk_widget_layout_states nk_widget(struct nk_rect*, const struct nk_context*); NK_API enum nk_widget_layout_states nk_widget_fitting(struct nk_rect*, struct nk_context*, struct nk_vec2); NK_API struct nk_rect nk_widget_bounds(struct nk_context*); NK_API struct nk_vec2 nk_widget_position(struct nk_context*); NK_API struct nk_vec2 nk_widget_size(struct nk_context*); NK_API float nk_widget_width(struct nk_context*); NK_API float nk_widget_height(struct nk_context*); NK_API int nk_widget_is_hovered(struct nk_context*); NK_API int nk_widget_is_mouse_clicked(struct nk_context*, enum nk_buttons); NK_API int nk_widget_has_mouse_click_down(struct nk_context*, enum nk_buttons, int down); NK_API void nk_spacing(struct nk_context*, int cols); /* ============================================================================= * * TEXT * * ============================================================================= */ enum nk_text_align { NK_TEXT_ALIGN_LEFT = 0x01, NK_TEXT_ALIGN_CENTERED = 0x02, NK_TEXT_ALIGN_RIGHT = 0x04, NK_TEXT_ALIGN_TOP = 0x08, NK_TEXT_ALIGN_MIDDLE = 0x10, NK_TEXT_ALIGN_BOTTOM = 0x20 }; enum nk_text_alignment { NK_TEXT_LEFT = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_LEFT, NK_TEXT_CENTERED = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_CENTERED, NK_TEXT_RIGHT = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_RIGHT }; NK_API void nk_text(struct nk_context*, const char*, int, nk_flags); NK_API void nk_text_colored(struct nk_context*, const char*, int, nk_flags, struct nk_color); NK_API void nk_text_wrap(struct nk_context*, const char*, int); NK_API void nk_text_wrap_colored(struct nk_context*, const char*, int, struct nk_color); NK_API void nk_label(struct nk_context*, const char*, nk_flags align); NK_API void nk_label_colored(struct nk_context*, const char*, nk_flags align, struct nk_color); NK_API void nk_label_wrap(struct nk_context*, const char*); NK_API void nk_label_colored_wrap(struct nk_context*, const char*, struct nk_color); NK_API void nk_image(struct nk_context*, struct nk_image); NK_API void nk_image_color(struct nk_context*, struct nk_image, struct nk_color); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_labelf(struct nk_context*, nk_flags, NK_PRINTF_FORMAT_STRING const char*, ...) NK_PRINTF_VARARG_FUNC(3); NK_API void nk_labelf_colored(struct nk_context*, nk_flags, struct nk_color, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(4); NK_API void nk_labelf_wrap(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(2); NK_API void nk_labelf_colored_wrap(struct nk_context*, struct nk_color, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(3); NK_API void nk_labelfv(struct nk_context*, nk_flags, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(3); NK_API void nk_labelfv_colored(struct nk_context*, nk_flags, struct nk_color, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(4); NK_API void nk_labelfv_wrap(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(2); NK_API void nk_labelfv_colored_wrap(struct nk_context*, struct nk_color, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(3); NK_API void nk_value_bool(struct nk_context*, const char *prefix, int); NK_API void nk_value_int(struct nk_context*, const char *prefix, int); NK_API void nk_value_uint(struct nk_context*, const char *prefix, unsigned int); NK_API void nk_value_float(struct nk_context*, const char *prefix, float); NK_API void nk_value_color_byte(struct nk_context*, const char *prefix, struct nk_color); NK_API void nk_value_color_float(struct nk_context*, const char *prefix, struct nk_color); NK_API void nk_value_color_hex(struct nk_context*, const char *prefix, struct nk_color); #endif /* ============================================================================= * * BUTTON * * ============================================================================= */ NK_API int nk_button_text(struct nk_context*, const char *title, int len); NK_API int nk_button_label(struct nk_context*, const char *title); NK_API int nk_button_color(struct nk_context*, struct nk_color); NK_API int nk_button_symbol(struct nk_context*, enum nk_symbol_type); NK_API int nk_button_image(struct nk_context*, struct nk_image img); NK_API int nk_button_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags text_alignment); NK_API int nk_button_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_button_image_label(struct nk_context*, struct nk_image img, const char*, nk_flags text_alignment); NK_API int nk_button_image_text(struct nk_context*, struct nk_image img, const char*, int, nk_flags alignment); NK_API int nk_button_text_styled(struct nk_context*, const struct nk_style_button*, const char *title, int len); NK_API int nk_button_label_styled(struct nk_context*, const struct nk_style_button*, const char *title); NK_API int nk_button_symbol_styled(struct nk_context*, const struct nk_style_button*, enum nk_symbol_type); NK_API int nk_button_image_styled(struct nk_context*, const struct nk_style_button*, struct nk_image img); NK_API int nk_button_symbol_text_styled(struct nk_context*,const struct nk_style_button*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_button_symbol_label_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *title, nk_flags align); NK_API int nk_button_image_label_styled(struct nk_context*,const struct nk_style_button*, struct nk_image img, const char*, nk_flags text_alignment); NK_API int nk_button_image_text_styled(struct nk_context*,const struct nk_style_button*, struct nk_image img, const char*, int, nk_flags alignment); NK_API void nk_button_set_behavior(struct nk_context*, enum nk_button_behavior); NK_API int nk_button_push_behavior(struct nk_context*, enum nk_button_behavior); NK_API int nk_button_pop_behavior(struct nk_context*); /* ============================================================================= * * CHECKBOX * * ============================================================================= */ NK_API int nk_check_label(struct nk_context*, const char*, int active); NK_API int nk_check_text(struct nk_context*, const char*, int,int active); NK_API unsigned nk_check_flags_label(struct nk_context*, const char*, unsigned int flags, unsigned int value); NK_API unsigned nk_check_flags_text(struct nk_context*, const char*, int, unsigned int flags, unsigned int value); NK_API int nk_checkbox_label(struct nk_context*, const char*, int *active); NK_API int nk_checkbox_text(struct nk_context*, const char*, int, int *active); NK_API int nk_checkbox_flags_label(struct nk_context*, const char*, unsigned int *flags, unsigned int value); NK_API int nk_checkbox_flags_text(struct nk_context*, const char*, int, unsigned int *flags, unsigned int value); /* ============================================================================= * * RADIO BUTTON * * ============================================================================= */ NK_API int nk_radio_label(struct nk_context*, const char*, int *active); NK_API int nk_radio_text(struct nk_context*, const char*, int, int *active); NK_API int nk_option_label(struct nk_context*, const char*, int active); NK_API int nk_option_text(struct nk_context*, const char*, int, int active); /* ============================================================================= * * SELECTABLE * * ============================================================================= */ NK_API int nk_selectable_label(struct nk_context*, const char*, nk_flags align, int *value); NK_API int nk_selectable_text(struct nk_context*, const char*, int, nk_flags align, int *value); NK_API int nk_selectable_image_label(struct nk_context*,struct nk_image, const char*, nk_flags align, int *value); NK_API int nk_selectable_image_text(struct nk_context*,struct nk_image, const char*, int, nk_flags align, int *value); NK_API int nk_selectable_symbol_label(struct nk_context*,enum nk_symbol_type, const char*, nk_flags align, int *value); NK_API int nk_selectable_symbol_text(struct nk_context*,enum nk_symbol_type, const char*, int, nk_flags align, int *value); NK_API int nk_select_label(struct nk_context*, const char*, nk_flags align, int value); NK_API int nk_select_text(struct nk_context*, const char*, int, nk_flags align, int value); NK_API int nk_select_image_label(struct nk_context*, struct nk_image,const char*, nk_flags align, int value); NK_API int nk_select_image_text(struct nk_context*, struct nk_image,const char*, int, nk_flags align, int value); NK_API int nk_select_symbol_label(struct nk_context*,enum nk_symbol_type, const char*, nk_flags align, int value); NK_API int nk_select_symbol_text(struct nk_context*,enum nk_symbol_type, const char*, int, nk_flags align, int value); /* ============================================================================= * * SLIDER * * ============================================================================= */ NK_API float nk_slide_float(struct nk_context*, float min, float val, float max, float step); NK_API int nk_slide_int(struct nk_context*, int min, int val, int max, int step); NK_API int nk_slider_float(struct nk_context*, float min, float *val, float max, float step); NK_API int nk_slider_int(struct nk_context*, int min, int *val, int max, int step); /* ============================================================================= * * PROGRESSBAR * * ============================================================================= */ NK_API int nk_progress(struct nk_context*, nk_size *cur, nk_size max, int modifyable); NK_API nk_size nk_prog(struct nk_context*, nk_size cur, nk_size max, int modifyable); /* ============================================================================= * * COLOR PICKER * * ============================================================================= */ NK_API struct nk_colorf nk_color_picker(struct nk_context*, struct nk_colorf, enum nk_color_format); NK_API int nk_color_pick(struct nk_context*, struct nk_colorf*, enum nk_color_format); /* ============================================================================= * * PROPERTIES * * ============================================================================= /// ### Properties /// Properties are the main value modification widgets in Nuklear. Changing a value /// can be achieved by dragging, adding/removing incremental steps on button click /// or by directly typing a number. /// /// #### Usage /// Each property requires a unique name for identifaction that is also used for /// displaying a label. If you want to use the same name multiple times make sure /// add a '#' before your name. The '#' will not be shown but will generate a /// unique ID. Each propery also takes in a minimum and maximum value. If you want /// to make use of the complete number range of a type just use the provided /// type limits from `limits.h`. For example `INT_MIN` and `INT_MAX` for /// `nk_property_int` and `nk_propertyi`. In additional each property takes in /// a increment value that will be added or subtracted if either the increment /// decrement button is clicked. Finally there is a value for increment per pixel /// dragged that is added or subtracted from the value. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int value = 0; /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // Input /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// // /// // Window /// if (nk_begin_xxx(...) { /// // Property /// nk_layout_row_dynamic(...); /// nk_property_int(ctx, "ID", INT_MIN, &value, INT_MAX, 1, 1); /// } /// nk_end(ctx); /// // /// // Draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------- /// nk_property_int | Integer property directly modifing a passed in value /// nk_property_float | Float property directly modifing a passed in value /// nk_property_double | Double property directly modifing a passed in value /// nk_propertyi | Integer property returning the modified int value /// nk_propertyf | Float property returning the modified float value /// nk_propertyd | Double property returning the modified double value /// */ /*/// #### nk_property_int /// Integer property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_int(struct nk_context *ctx, const char *name, int min, int *val, int max, int step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Integer pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_int(struct nk_context*, const char *name, int min, int *val, int max, int step, float inc_per_pixel); /*/// #### nk_property_float /// Float property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_float(struct nk_context *ctx, const char *name, float min, float *val, float max, float step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Float pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_float(struct nk_context*, const char *name, float min, float *val, float max, float step, float inc_per_pixel); /*/// #### nk_property_double /// Double property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_double(struct nk_context *ctx, const char *name, double min, double *val, double max, double step, double inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Double pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_double(struct nk_context*, const char *name, double min, double *val, double max, double step, float inc_per_pixel); /*/// #### nk_propertyi /// Integer property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_propertyi(struct nk_context *ctx, const char *name, int min, int val, int max, int step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current integer value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified integer value */ NK_API int nk_propertyi(struct nk_context*, const char *name, int min, int val, int max, int step, float inc_per_pixel); /*/// #### nk_propertyf /// Float property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_propertyf(struct nk_context *ctx, const char *name, float min, float val, float max, float step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current float value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified float value */ NK_API float nk_propertyf(struct nk_context*, const char *name, float min, float val, float max, float step, float inc_per_pixel); /*/// #### nk_propertyd /// Float property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_propertyd(struct nk_context *ctx, const char *name, double min, double val, double max, double step, double inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current double value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified double value */ NK_API double nk_propertyd(struct nk_context*, const char *name, double min, double val, double max, double step, float inc_per_pixel); /* ============================================================================= * * TEXT EDIT * * ============================================================================= */ enum nk_edit_flags { NK_EDIT_DEFAULT = 0, NK_EDIT_READ_ONLY = NK_FLAG(0), NK_EDIT_AUTO_SELECT = NK_FLAG(1), NK_EDIT_SIG_ENTER = NK_FLAG(2), NK_EDIT_ALLOW_TAB = NK_FLAG(3), NK_EDIT_NO_CURSOR = NK_FLAG(4), NK_EDIT_SELECTABLE = NK_FLAG(5), NK_EDIT_CLIPBOARD = NK_FLAG(6), NK_EDIT_CTRL_ENTER_NEWLINE = NK_FLAG(7), NK_EDIT_NO_HORIZONTAL_SCROLL = NK_FLAG(8), NK_EDIT_ALWAYS_INSERT_MODE = NK_FLAG(9), NK_EDIT_MULTILINE = NK_FLAG(10), NK_EDIT_GOTO_END_ON_ACTIVATE = NK_FLAG(11) }; enum nk_edit_types { NK_EDIT_SIMPLE = NK_EDIT_ALWAYS_INSERT_MODE, NK_EDIT_FIELD = NK_EDIT_SIMPLE|NK_EDIT_SELECTABLE|NK_EDIT_CLIPBOARD, NK_EDIT_BOX = NK_EDIT_ALWAYS_INSERT_MODE| NK_EDIT_SELECTABLE| NK_EDIT_MULTILINE|NK_EDIT_ALLOW_TAB|NK_EDIT_CLIPBOARD, NK_EDIT_EDITOR = NK_EDIT_SELECTABLE|NK_EDIT_MULTILINE|NK_EDIT_ALLOW_TAB| NK_EDIT_CLIPBOARD }; enum nk_edit_events { NK_EDIT_ACTIVE = NK_FLAG(0), /* edit widget is currently being modified */ NK_EDIT_INACTIVE = NK_FLAG(1), /* edit widget is not active and is not being modified */ NK_EDIT_ACTIVATED = NK_FLAG(2), /* edit widget went from state inactive to state active */ NK_EDIT_DEACTIVATED = NK_FLAG(3), /* edit widget went from state active to state inactive */ NK_EDIT_COMMITED = NK_FLAG(4) /* edit widget has received an enter and lost focus */ }; NK_API nk_flags nk_edit_string(struct nk_context*, nk_flags, char *buffer, int *len, int max, nk_plugin_filter); NK_API nk_flags nk_edit_string_zero_terminated(struct nk_context*, nk_flags, char *buffer, int max, nk_plugin_filter); NK_API nk_flags nk_edit_buffer(struct nk_context*, nk_flags, struct nk_text_edit*, nk_plugin_filter); NK_API void nk_edit_focus(struct nk_context*, nk_flags flags); NK_API void nk_edit_unfocus(struct nk_context*); /* ============================================================================= * * CHART * * ============================================================================= */ NK_API int nk_chart_begin(struct nk_context*, enum nk_chart_type, int num, float min, float max); NK_API int nk_chart_begin_colored(struct nk_context*, enum nk_chart_type, struct nk_color, struct nk_color active, int num, float min, float max); NK_API void nk_chart_add_slot(struct nk_context *ctx, const enum nk_chart_type, int count, float min_value, float max_value); NK_API void nk_chart_add_slot_colored(struct nk_context *ctx, const enum nk_chart_type, struct nk_color, struct nk_color active, int count, float min_value, float max_value); NK_API nk_flags nk_chart_push(struct nk_context*, float); NK_API nk_flags nk_chart_push_slot(struct nk_context*, float, int); NK_API void nk_chart_end(struct nk_context*); NK_API void nk_plot(struct nk_context*, enum nk_chart_type, const float *values, int count, int offset); NK_API void nk_plot_function(struct nk_context*, enum nk_chart_type, void *userdata, float(*value_getter)(void* user, int index), int count, int offset); /* ============================================================================= * * POPUP * * ============================================================================= */ NK_API int nk_popup_begin(struct nk_context*, enum nk_popup_type, const char*, nk_flags, struct nk_rect bounds); NK_API void nk_popup_close(struct nk_context*); NK_API void nk_popup_end(struct nk_context*); NK_API void nk_popup_get_scroll(struct nk_context*, nk_uint *offset_x, nk_uint *offset_y); NK_API void nk_popup_set_scroll(struct nk_context*, nk_uint offset_x, nk_uint offset_y); /* ============================================================================= * * COMBOBOX * * ============================================================================= */ NK_API int nk_combo(struct nk_context*, const char **items, int count, int selected, int item_height, struct nk_vec2 size); NK_API int nk_combo_separator(struct nk_context*, const char *items_separated_by_separator, int separator, int selected, int count, int item_height, struct nk_vec2 size); NK_API int nk_combo_string(struct nk_context*, const char *items_separated_by_zeros, int selected, int count, int item_height, struct nk_vec2 size); NK_API int nk_combo_callback(struct nk_context*, void(*item_getter)(void*, int, const char**), void *userdata, int selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox(struct nk_context*, const char **items, int count, int *selected, int item_height, struct nk_vec2 size); NK_API void nk_combobox_string(struct nk_context*, const char *items_separated_by_zeros, int *selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox_separator(struct nk_context*, const char *items_separated_by_separator, int separator,int *selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox_callback(struct nk_context*, void(*item_getter)(void*, int, const char**), void*, int *selected, int count, int item_height, struct nk_vec2 size); /* ============================================================================= * * ABSTRACT COMBOBOX * * ============================================================================= */ NK_API int nk_combo_begin_text(struct nk_context*, const char *selected, int, struct nk_vec2 size); NK_API int nk_combo_begin_label(struct nk_context*, const char *selected, struct nk_vec2 size); NK_API int nk_combo_begin_color(struct nk_context*, struct nk_color color, struct nk_vec2 size); NK_API int nk_combo_begin_symbol(struct nk_context*, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_symbol_label(struct nk_context*, const char *selected, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_symbol_text(struct nk_context*, const char *selected, int, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_image(struct nk_context*, struct nk_image img, struct nk_vec2 size); NK_API int nk_combo_begin_image_label(struct nk_context*, const char *selected, struct nk_image, struct nk_vec2 size); NK_API int nk_combo_begin_image_text(struct nk_context*, const char *selected, int, struct nk_image, struct nk_vec2 size); NK_API int nk_combo_item_label(struct nk_context*, const char*, nk_flags alignment); NK_API int nk_combo_item_text(struct nk_context*, const char*,int, nk_flags alignment); NK_API int nk_combo_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_combo_item_image_text(struct nk_context*, struct nk_image, const char*, int,nk_flags alignment); NK_API int nk_combo_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API int nk_combo_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API void nk_combo_close(struct nk_context*); NK_API void nk_combo_end(struct nk_context*); /* ============================================================================= * * CONTEXTUAL * * ============================================================================= */ NK_API int nk_contextual_begin(struct nk_context*, nk_flags, struct nk_vec2, struct nk_rect trigger_bounds); NK_API int nk_contextual_item_text(struct nk_context*, const char*, int,nk_flags align); NK_API int nk_contextual_item_label(struct nk_context*, const char*, nk_flags align); NK_API int nk_contextual_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_contextual_item_image_text(struct nk_context*, struct nk_image, const char*, int len, nk_flags alignment); NK_API int nk_contextual_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API int nk_contextual_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API void nk_contextual_close(struct nk_context*); NK_API void nk_contextual_end(struct nk_context*); /* ============================================================================= * * TOOLTIP * * ============================================================================= */ NK_API void nk_tooltip(struct nk_context*, const char*); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_tooltipf(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, ...) NK_PRINTF_VARARG_FUNC(2); NK_API void nk_tooltipfv(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(2); #endif NK_API int nk_tooltip_begin(struct nk_context*, float width); NK_API void nk_tooltip_end(struct nk_context*); /* ============================================================================= * * MENU * * ============================================================================= */ NK_API void nk_menubar_begin(struct nk_context*); NK_API void nk_menubar_end(struct nk_context*); NK_API int nk_menu_begin_text(struct nk_context*, const char* title, int title_len, nk_flags align, struct nk_vec2 size); NK_API int nk_menu_begin_label(struct nk_context*, const char*, nk_flags align, struct nk_vec2 size); NK_API int nk_menu_begin_image(struct nk_context*, const char*, struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_image_text(struct nk_context*, const char*, int,nk_flags align,struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_image_label(struct nk_context*, const char*, nk_flags align,struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_symbol(struct nk_context*, const char*, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_begin_symbol_text(struct nk_context*, const char*, int,nk_flags align,enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_begin_symbol_label(struct nk_context*, const char*, nk_flags align,enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_item_text(struct nk_context*, const char*, int,nk_flags align); NK_API int nk_menu_item_label(struct nk_context*, const char*, nk_flags alignment); NK_API int nk_menu_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_menu_item_image_text(struct nk_context*, struct nk_image, const char*, int len, nk_flags alignment); NK_API int nk_menu_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_menu_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API void nk_menu_close(struct nk_context*); NK_API void nk_menu_end(struct nk_context*); /* ============================================================================= * * STYLE * * ============================================================================= */ enum nk_style_colors { NK_COLOR_TEXT, NK_COLOR_WINDOW, NK_COLOR_HEADER, NK_COLOR_BORDER, NK_COLOR_BUTTON, NK_COLOR_BUTTON_HOVER, NK_COLOR_BUTTON_ACTIVE, NK_COLOR_TOGGLE, NK_COLOR_TOGGLE_HOVER, NK_COLOR_TOGGLE_CURSOR, NK_COLOR_SELECT, NK_COLOR_SELECT_ACTIVE, NK_COLOR_SLIDER, NK_COLOR_SLIDER_CURSOR, NK_COLOR_SLIDER_CURSOR_HOVER, NK_COLOR_SLIDER_CURSOR_ACTIVE, NK_COLOR_PROPERTY, NK_COLOR_EDIT, NK_COLOR_EDIT_CURSOR, NK_COLOR_COMBO, NK_COLOR_CHART, NK_COLOR_CHART_COLOR, NK_COLOR_CHART_COLOR_HIGHLIGHT, NK_COLOR_SCROLLBAR, NK_COLOR_SCROLLBAR_CURSOR, NK_COLOR_SCROLLBAR_CURSOR_HOVER, NK_COLOR_SCROLLBAR_CURSOR_ACTIVE, NK_COLOR_TAB_HEADER, NK_COLOR_COUNT }; enum nk_style_cursor { NK_CURSOR_ARROW, NK_CURSOR_TEXT, NK_CURSOR_MOVE, NK_CURSOR_RESIZE_VERTICAL, NK_CURSOR_RESIZE_HORIZONTAL, NK_CURSOR_RESIZE_TOP_LEFT_DOWN_RIGHT, NK_CURSOR_RESIZE_TOP_RIGHT_DOWN_LEFT, NK_CURSOR_COUNT }; NK_API void nk_style_default(struct nk_context*); NK_API void nk_style_from_table(struct nk_context*, const struct nk_color*); NK_API void nk_style_load_cursor(struct nk_context*, enum nk_style_cursor, const struct nk_cursor*); NK_API void nk_style_load_all_cursors(struct nk_context*, struct nk_cursor*); NK_API const char* nk_style_get_color_by_name(enum nk_style_colors); NK_API void nk_style_set_font(struct nk_context*, const struct nk_user_font*); NK_API int nk_style_set_cursor(struct nk_context*, enum nk_style_cursor); NK_API void nk_style_show_cursor(struct nk_context*); NK_API void nk_style_hide_cursor(struct nk_context*); NK_API int nk_style_push_font(struct nk_context*, const struct nk_user_font*); NK_API int nk_style_push_float(struct nk_context*, float*, float); NK_API int nk_style_push_vec2(struct nk_context*, struct nk_vec2*, struct nk_vec2); NK_API int nk_style_push_style_item(struct nk_context*, struct nk_style_item*, struct nk_style_item); NK_API int nk_style_push_flags(struct nk_context*, nk_flags*, nk_flags); NK_API int nk_style_push_color(struct nk_context*, struct nk_color*, struct nk_color); NK_API int nk_style_pop_font(struct nk_context*); NK_API int nk_style_pop_float(struct nk_context*); NK_API int nk_style_pop_vec2(struct nk_context*); NK_API int nk_style_pop_style_item(struct nk_context*); NK_API int nk_style_pop_flags(struct nk_context*); NK_API int nk_style_pop_color(struct nk_context*); /* ============================================================================= * * COLOR * * ============================================================================= */ NK_API struct nk_color nk_rgb(int r, int g, int b); NK_API struct nk_color nk_rgb_iv(const int *rgb); NK_API struct nk_color nk_rgb_bv(const nk_byte* rgb); NK_API struct nk_color nk_rgb_f(float r, float g, float b); NK_API struct nk_color nk_rgb_fv(const float *rgb); NK_API struct nk_color nk_rgb_cf(struct nk_colorf c); NK_API struct nk_color nk_rgb_hex(const char *rgb); NK_API struct nk_color nk_rgba(int r, int g, int b, int a); NK_API struct nk_color nk_rgba_u32(nk_uint); NK_API struct nk_color nk_rgba_iv(const int *rgba); NK_API struct nk_color nk_rgba_bv(const nk_byte *rgba); NK_API struct nk_color nk_rgba_f(float r, float g, float b, float a); NK_API struct nk_color nk_rgba_fv(const float *rgba); NK_API struct nk_color nk_rgba_cf(struct nk_colorf c); NK_API struct nk_color nk_rgba_hex(const char *rgb); NK_API struct nk_colorf nk_hsva_colorf(float h, float s, float v, float a); NK_API struct nk_colorf nk_hsva_colorfv(float *c); NK_API void nk_colorf_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_colorf in); NK_API void nk_colorf_hsva_fv(float *hsva, struct nk_colorf in); NK_API struct nk_color nk_hsv(int h, int s, int v); NK_API struct nk_color nk_hsv_iv(const int *hsv); NK_API struct nk_color nk_hsv_bv(const nk_byte *hsv); NK_API struct nk_color nk_hsv_f(float h, float s, float v); NK_API struct nk_color nk_hsv_fv(const float *hsv); NK_API struct nk_color nk_hsva(int h, int s, int v, int a); NK_API struct nk_color nk_hsva_iv(const int *hsva); NK_API struct nk_color nk_hsva_bv(const nk_byte *hsva); NK_API struct nk_color nk_hsva_f(float h, float s, float v, float a); NK_API struct nk_color nk_hsva_fv(const float *hsva); /* color (conversion nuklear --> user) */ NK_API void nk_color_f(float *r, float *g, float *b, float *a, struct nk_color); NK_API void nk_color_fv(float *rgba_out, struct nk_color); NK_API struct nk_colorf nk_color_cf(struct nk_color); NK_API void nk_color_d(double *r, double *g, double *b, double *a, struct nk_color); NK_API void nk_color_dv(double *rgba_out, struct nk_color); NK_API nk_uint nk_color_u32(struct nk_color); NK_API void nk_color_hex_rgba(char *output, struct nk_color); NK_API void nk_color_hex_rgb(char *output, struct nk_color); NK_API void nk_color_hsv_i(int *out_h, int *out_s, int *out_v, struct nk_color); NK_API void nk_color_hsv_b(nk_byte *out_h, nk_byte *out_s, nk_byte *out_v, struct nk_color); NK_API void nk_color_hsv_iv(int *hsv_out, struct nk_color); NK_API void nk_color_hsv_bv(nk_byte *hsv_out, struct nk_color); NK_API void nk_color_hsv_f(float *out_h, float *out_s, float *out_v, struct nk_color); NK_API void nk_color_hsv_fv(float *hsv_out, struct nk_color); NK_API void nk_color_hsva_i(int *h, int *s, int *v, int *a, struct nk_color); NK_API void nk_color_hsva_b(nk_byte *h, nk_byte *s, nk_byte *v, nk_byte *a, struct nk_color); NK_API void nk_color_hsva_iv(int *hsva_out, struct nk_color); NK_API void nk_color_hsva_bv(nk_byte *hsva_out, struct nk_color); NK_API void nk_color_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_color); NK_API void nk_color_hsva_fv(float *hsva_out, struct nk_color); /* ============================================================================= * * IMAGE * * ============================================================================= */ NK_API nk_handle nk_handle_ptr(void*); NK_API nk_handle nk_handle_id(int); NK_API struct nk_image nk_image_handle(nk_handle); NK_API struct nk_image nk_image_ptr(void*); NK_API struct nk_image nk_image_id(int); NK_API int nk_image_is_subimage(const struct nk_image* img); NK_API struct nk_image nk_subimage_ptr(void*, unsigned short w, unsigned short h, struct nk_rect sub_region); NK_API struct nk_image nk_subimage_id(int, unsigned short w, unsigned short h, struct nk_rect sub_region); NK_API struct nk_image nk_subimage_handle(nk_handle, unsigned short w, unsigned short h, struct nk_rect sub_region); /* ============================================================================= * * MATH * * ============================================================================= */ NK_API nk_hash nk_murmur_hash(const void *key, int len, nk_hash seed); NK_API void nk_triangle_from_direction(struct nk_vec2 *result, struct nk_rect r, float pad_x, float pad_y, enum nk_heading); NK_API struct nk_vec2 nk_vec2(float x, float y); NK_API struct nk_vec2 nk_vec2i(int x, int y); NK_API struct nk_vec2 nk_vec2v(const float *xy); NK_API struct nk_vec2 nk_vec2iv(const int *xy); NK_API struct nk_rect nk_get_null_rect(void); NK_API struct nk_rect nk_rect(float x, float y, float w, float h); NK_API struct nk_rect nk_recti(int x, int y, int w, int h); NK_API struct nk_rect nk_recta(struct nk_vec2 pos, struct nk_vec2 size); NK_API struct nk_rect nk_rectv(const float *xywh); NK_API struct nk_rect nk_rectiv(const int *xywh); NK_API struct nk_vec2 nk_rect_pos(struct nk_rect); NK_API struct nk_vec2 nk_rect_size(struct nk_rect); /* ============================================================================= * * STRING * * ============================================================================= */ NK_API int nk_strlen(const char *str); NK_API int nk_stricmp(const char *s1, const char *s2); NK_API int nk_stricmpn(const char *s1, const char *s2, int n); NK_API int nk_strtoi(const char *str, const char **endptr); NK_API float nk_strtof(const char *str, const char **endptr); NK_API double nk_strtod(const char *str, const char **endptr); NK_API int nk_strfilter(const char *text, const char *regexp); NK_API int nk_strmatch_fuzzy_string(char const *str, char const *pattern, int *out_score); NK_API int nk_strmatch_fuzzy_text(const char *txt, int txt_len, const char *pattern, int *out_score); /* ============================================================================= * * UTF-8 * * ============================================================================= */ NK_API int nk_utf_decode(const char*, nk_rune*, int); NK_API int nk_utf_encode(nk_rune, char*, int); NK_API int nk_utf_len(const char*, int byte_len); NK_API const char* nk_utf_at(const char *buffer, int length, int index, nk_rune *unicode, int *len); /* =============================================================== * * FONT * * ===============================================================*/ /* Font handling in this library was designed to be quite customizable and lets you decide what you want to use and what you want to provide. There are three different ways to use the font atlas. The first two will use your font handling scheme and only requires essential data to run nuklear. The next slightly more advanced features is font handling with vertex buffer output. Finally the most complex API wise is using nuklear's font baking API. 1.) Using your own implementation without vertex buffer output -------------------------------------------------------------- So first up the easiest way to do font handling is by just providing a `nk_user_font` struct which only requires the height in pixel of the used font and a callback to calculate the width of a string. This way of handling fonts is best fitted for using the normal draw shape command API where you do all the text drawing yourself and the library does not require any kind of deeper knowledge about which font handling mechanism you use. IMPORTANT: the `nk_user_font` pointer provided to nuklear has to persist over the complete life time! I know this sucks but it is currently the only way to switch between fonts. float your_text_width_calculation(nk_handle handle, float height, const char *text, int len) { your_font_type *type = handle.ptr; float text_width = ...; return text_width; } struct nk_user_font font; font.userdata.ptr = &your_font_class_or_struct; font.height = your_font_height; font.width = your_text_width_calculation; struct nk_context ctx; nk_init_default(&ctx, &font); 2.) Using your own implementation with vertex buffer output -------------------------------------------------------------- While the first approach works fine if you don't want to use the optional vertex buffer output it is not enough if you do. To get font handling working for these cases you have to provide two additional parameters inside the `nk_user_font`. First a texture atlas handle used to draw text as subimages of a bigger font atlas texture and a callback to query a character's glyph information (offset, size, ...). So it is still possible to provide your own font and use the vertex buffer output. float your_text_width_calculation(nk_handle handle, float height, const char *text, int len) { your_font_type *type = handle.ptr; float text_width = ...; return text_width; } void query_your_font_glyph(nk_handle handle, float font_height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint) { your_font_type *type = handle.ptr; glyph.width = ...; glyph.height = ...; glyph.xadvance = ...; glyph.uv[0].x = ...; glyph.uv[0].y = ...; glyph.uv[1].x = ...; glyph.uv[1].y = ...; glyph.offset.x = ...; glyph.offset.y = ...; } struct nk_user_font font; font.userdata.ptr = &your_font_class_or_struct; font.height = your_font_height; font.width = your_text_width_calculation; font.query = query_your_font_glyph; font.texture.id = your_font_texture; struct nk_context ctx; nk_init_default(&ctx, &font); 3.) Nuklear font baker ------------------------------------ The final approach if you do not have a font handling functionality or don't want to use it in this library is by using the optional font baker. The font baker APIs can be used to create a font plus font atlas texture and can be used with or without the vertex buffer output. It still uses the `nk_user_font` struct and the two different approaches previously stated still work. The font baker is not located inside `nk_context` like all other systems since it can be understood as more of an extension to nuklear and does not really depend on any `nk_context` state. Font baker need to be initialized first by one of the nk_font_atlas_init_xxx functions. If you don't care about memory just call the default version `nk_font_atlas_init_default` which will allocate all memory from the standard library. If you want to control memory allocation but you don't care if the allocated memory is temporary and therefore can be freed directly after the baking process is over or permanent you can call `nk_font_atlas_init`. After successfully initializing the font baker you can add Truetype(.ttf) fonts from different sources like memory or from file by calling one of the `nk_font_atlas_add_xxx`. functions. Adding font will permanently store each font, font config and ttf memory block(!) inside the font atlas and allows to reuse the font atlas. If you don't want to reuse the font baker by for example adding additional fonts you can call `nk_font_atlas_cleanup` after the baking process is over (after calling nk_font_atlas_end). As soon as you added all fonts you wanted you can now start the baking process for every selected glyph to image by calling `nk_font_atlas_bake`. The baking process returns image memory, width and height which can be used to either create your own image object or upload it to any graphics library. No matter which case you finally have to call `nk_font_atlas_end` which will free all temporary memory including the font atlas image so make sure you created our texture beforehand. `nk_font_atlas_end` requires a handle to your font texture or object and optionally fills a `struct nk_draw_null_texture` which can be used for the optional vertex output. If you don't want it just set the argument to `NULL`. At this point you are done and if you don't want to reuse the font atlas you can call `nk_font_atlas_cleanup` to free all truetype blobs and configuration memory. Finally if you don't use the font atlas and any of it's fonts anymore you need to call `nk_font_atlas_clear` to free all memory still being used. struct nk_font_atlas atlas; nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); nk_font *font = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font.ttf", 13, 0); nk_font *font2 = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font2.ttf", 16, 0); const void* img = nk_font_atlas_bake(&atlas, &img_width, &img_height, NK_FONT_ATLAS_RGBA32); nk_font_atlas_end(&atlas, nk_handle_id(texture), 0); struct nk_context ctx; nk_init_default(&ctx, &font->handle); while (1) { } nk_font_atlas_clear(&atlas); The font baker API is probably the most complex API inside this library and I would suggest reading some of my examples `example/` to get a grip on how to use the font atlas. There are a number of details I left out. For example how to merge fonts, configure a font with `nk_font_config` to use other languages, use another texture coordinate format and a lot more: struct nk_font_config cfg = nk_font_config(font_pixel_height); cfg.merge_mode = nk_false or nk_true; cfg.range = nk_font_korean_glyph_ranges(); cfg.coord_type = NK_COORD_PIXEL; nk_font *font = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font.ttf", 13, &cfg); */ struct nk_user_font_glyph; typedef float(*nk_text_width_f)(nk_handle, float h, const char*, int len); typedef void(*nk_query_font_glyph_f)(nk_handle handle, float font_height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint); #if defined(NK_INCLUDE_VERTEX_BUFFER_OUTPUT) || defined(NK_INCLUDE_SOFTWARE_FONT) struct nk_user_font_glyph { struct nk_vec2 uv[2]; /* texture coordinates */ struct nk_vec2 offset; /* offset between top left and glyph */ float width, height; /* size of the glyph */ float xadvance; /* offset to the next glyph */ }; #endif struct nk_user_font { nk_handle userdata; /* user provided font handle */ float height; /* max height of the font */ nk_text_width_f width; /* font string width in pixel callback */ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT nk_query_font_glyph_f query; /* font glyph callback to query drawing info */ nk_handle texture; /* texture handle to the used font atlas or texture */ #endif }; #ifdef NK_INCLUDE_FONT_BAKING enum nk_font_coord_type { NK_COORD_UV, /* texture coordinates inside font glyphs are clamped between 0-1 */ NK_COORD_PIXEL /* texture coordinates inside font glyphs are in absolute pixel */ }; struct nk_font; struct nk_baked_font { float height; /* height of the font */ float ascent, descent; /* font glyphs ascent and descent */ nk_rune glyph_offset; /* glyph array offset inside the font glyph baking output array */ nk_rune glyph_count; /* number of glyphs of this font inside the glyph baking array output */ const nk_rune *ranges; /* font codepoint ranges as pairs of (from/to) and 0 as last element */ }; struct nk_font_config { struct nk_font_config *next; /* NOTE: only used internally */ void *ttf_blob; /* pointer to loaded TTF file memory block. * NOTE: not needed for nk_font_atlas_add_from_memory and nk_font_atlas_add_from_file. */ nk_size ttf_size; /* size of the loaded TTF file memory block * NOTE: not needed for nk_font_atlas_add_from_memory and nk_font_atlas_add_from_file. */ unsigned char ttf_data_owned_by_atlas; /* used inside font atlas: default to: 0*/ unsigned char merge_mode; /* merges this font into the last font */ unsigned char pixel_snap; /* align every character to pixel boundary (if true set oversample (1,1)) */ unsigned char oversample_v, oversample_h; /* rasterize at hight quality for sub-pixel position */ unsigned char padding[3]; float size; /* baked pixel height of the font */ enum nk_font_coord_type coord_type; /* texture coordinate format with either pixel or UV coordinates */ struct nk_vec2 spacing; /* extra pixel spacing between glyphs */ const nk_rune *range; /* list of unicode ranges (2 values per range, zero terminated) */ struct nk_baked_font *font; /* font to setup in the baking process: NOTE: not needed for font atlas */ nk_rune fallback_glyph; /* fallback glyph to use if a given rune is not found */ struct nk_font_config *n; struct nk_font_config *p; }; struct nk_font_glyph { nk_rune codepoint; float xadvance; float x0, y0, x1, y1, w, h; float u0, v0, u1, v1; }; struct nk_font { struct nk_font *next; struct nk_user_font handle; struct nk_baked_font info; float scale; struct nk_font_glyph *glyphs; const struct nk_font_glyph *fallback; nk_rune fallback_codepoint; nk_handle texture; struct nk_font_config *config; }; enum nk_font_atlas_format { NK_FONT_ATLAS_ALPHA8, NK_FONT_ATLAS_RGBA32 }; struct nk_font_atlas { void *pixel; int tex_width; int tex_height; struct nk_allocator permanent; struct nk_allocator temporary; struct nk_recti custom; struct nk_cursor cursors[NK_CURSOR_COUNT]; int glyph_count; struct nk_font_glyph *glyphs; struct nk_font *default_font; struct nk_font *fonts; struct nk_font_config *config; int font_num; }; /* some language glyph codepoint ranges */ NK_API const nk_rune *nk_font_default_glyph_ranges(void); NK_API const nk_rune *nk_font_chinese_glyph_ranges(void); NK_API const nk_rune *nk_font_cyrillic_glyph_ranges(void); NK_API const nk_rune *nk_font_korean_glyph_ranges(void); #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_font_atlas_init_default(struct nk_font_atlas*); #endif NK_API void nk_font_atlas_init(struct nk_font_atlas*, struct nk_allocator*); NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, struct nk_allocator *persistent, struct nk_allocator *transient); NK_API void nk_font_atlas_begin(struct nk_font_atlas*); NK_API struct nk_font_config nk_font_config(float pixel_height); NK_API struct nk_font *nk_font_atlas_add(struct nk_font_atlas*, const struct nk_font_config*); #ifdef NK_INCLUDE_DEFAULT_FONT NK_API struct nk_font* nk_font_atlas_add_default(struct nk_font_atlas*, float height, const struct nk_font_config*); #endif NK_API struct nk_font* nk_font_atlas_add_from_memory(struct nk_font_atlas *atlas, void *memory, nk_size size, float height, const struct nk_font_config *config); #ifdef NK_INCLUDE_STANDARD_IO NK_API struct nk_font* nk_font_atlas_add_from_file(struct nk_font_atlas *atlas, const char *file_path, float height, const struct nk_font_config*); #endif NK_API struct nk_font *nk_font_atlas_add_compressed(struct nk_font_atlas*, void *memory, nk_size size, float height, const struct nk_font_config*); NK_API struct nk_font* nk_font_atlas_add_compressed_base85(struct nk_font_atlas*, const char *data, float height, const struct nk_font_config *config); NK_API const void* nk_font_atlas_bake(struct nk_font_atlas*, int *width, int *height, enum nk_font_atlas_format); NK_API void nk_font_atlas_end(struct nk_font_atlas*, nk_handle tex, struct nk_draw_null_texture*); NK_API const struct nk_font_glyph* nk_font_find_glyph(struct nk_font*, nk_rune unicode); NK_API void nk_font_atlas_cleanup(struct nk_font_atlas *atlas); NK_API void nk_font_atlas_clear(struct nk_font_atlas*); #endif /* ============================================================== * * MEMORY BUFFER * * ===============================================================*/ /* A basic (double)-buffer with linear allocation and resetting as only freeing policy. The buffer's main purpose is to control all memory management inside the GUI toolkit and still leave memory control as much as possible in the hand of the user while also making sure the library is easy to use if not as much control is needed. In general all memory inside this library can be provided from the user in three different ways. The first way and the one providing most control is by just passing a fixed size memory block. In this case all control lies in the hand of the user since he can exactly control where the memory comes from and how much memory the library should consume. Of course using the fixed size API removes the ability to automatically resize a buffer if not enough memory is provided so you have to take over the resizing. While being a fixed sized buffer sounds quite limiting, it is very effective in this library since the actual memory consumption is quite stable and has a fixed upper bound for a lot of cases. If you don't want to think about how much memory the library should allocate at all time or have a very dynamic UI with unpredictable memory consumption habits but still want control over memory allocation you can use the dynamic allocator based API. The allocator consists of two callbacks for allocating and freeing memory and optional userdata so you can plugin your own allocator. The final and easiest way can be used by defining NK_INCLUDE_DEFAULT_ALLOCATOR which uses the standard library memory allocation functions malloc and free and takes over complete control over memory in this library. */ struct nk_memory_status { void *memory; unsigned int type; nk_size size; nk_size allocated; nk_size needed; nk_size calls; }; enum nk_allocation_type { NK_BUFFER_FIXED, NK_BUFFER_DYNAMIC }; enum nk_buffer_allocation_type { NK_BUFFER_FRONT, NK_BUFFER_BACK, NK_BUFFER_MAX }; struct nk_buffer_marker { int active; nk_size offset; }; struct nk_memory {void *ptr;nk_size size;}; struct nk_buffer { struct nk_buffer_marker marker[NK_BUFFER_MAX]; /* buffer marker to free a buffer to a certain offset */ struct nk_allocator pool; /* allocator callback for dynamic buffers */ enum nk_allocation_type type; /* memory management type */ struct nk_memory memory; /* memory and size of the current memory block */ float grow_factor; /* growing factor for dynamic memory management */ nk_size allocated; /* total amount of memory allocated */ nk_size needed; /* totally consumed memory given that enough memory is present */ nk_size calls; /* number of allocation calls */ nk_size size; /* current size of the buffer */ }; #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_buffer_init_default(struct nk_buffer*); #endif NK_API void nk_buffer_init(struct nk_buffer*, const struct nk_allocator*, nk_size size); NK_API void nk_buffer_init_fixed(struct nk_buffer*, void *memory, nk_size size); NK_API void nk_buffer_info(struct nk_memory_status*, struct nk_buffer*); NK_API void nk_buffer_push(struct nk_buffer*, enum nk_buffer_allocation_type type, const void *memory, nk_size size, nk_size align); NK_API void nk_buffer_mark(struct nk_buffer*, enum nk_buffer_allocation_type type); NK_API void nk_buffer_reset(struct nk_buffer*, enum nk_buffer_allocation_type type); NK_API void nk_buffer_clear(struct nk_buffer*); NK_API void nk_buffer_free(struct nk_buffer*); NK_API void *nk_buffer_memory(struct nk_buffer*); NK_API const void *nk_buffer_memory_const(const struct nk_buffer*); NK_API nk_size nk_buffer_total(struct nk_buffer*); /* ============================================================== * * STRING * * ===============================================================*/ /* Basic string buffer which is only used in context with the text editor * to manage and manipulate dynamic or fixed size string content. This is _NOT_ * the default string handling method. The only instance you should have any contact * with this API is if you interact with an `nk_text_edit` object inside one of the * copy and paste functions and even there only for more advanced cases. */ struct nk_str { struct nk_buffer buffer; int len; /* in codepoints/runes/glyphs */ }; #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_str_init_default(struct nk_str*); #endif NK_API void nk_str_init(struct nk_str*, const struct nk_allocator*, nk_size size); NK_API void nk_str_init_fixed(struct nk_str*, void *memory, nk_size size); NK_API void nk_str_clear(struct nk_str*); NK_API void nk_str_free(struct nk_str*); NK_API int nk_str_append_text_char(struct nk_str*, const char*, int); NK_API int nk_str_append_str_char(struct nk_str*, const char*); NK_API int nk_str_append_text_utf8(struct nk_str*, const char*, int); NK_API int nk_str_append_str_utf8(struct nk_str*, const char*); NK_API int nk_str_append_text_runes(struct nk_str*, const nk_rune*, int); NK_API int nk_str_append_str_runes(struct nk_str*, const nk_rune*); NK_API int nk_str_insert_at_char(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_at_rune(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_text_char(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_str_char(struct nk_str*, int pos, const char*); NK_API int nk_str_insert_text_utf8(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_str_utf8(struct nk_str*, int pos, const char*); NK_API int nk_str_insert_text_runes(struct nk_str*, int pos, const nk_rune*, int); NK_API int nk_str_insert_str_runes(struct nk_str*, int pos, const nk_rune*); NK_API void nk_str_remove_chars(struct nk_str*, int len); NK_API void nk_str_remove_runes(struct nk_str *str, int len); NK_API void nk_str_delete_chars(struct nk_str*, int pos, int len); NK_API void nk_str_delete_runes(struct nk_str*, int pos, int len); NK_API char *nk_str_at_char(struct nk_str*, int pos); NK_API char *nk_str_at_rune(struct nk_str*, int pos, nk_rune *unicode, int *len); NK_API nk_rune nk_str_rune_at(const struct nk_str*, int pos); NK_API const char *nk_str_at_char_const(const struct nk_str*, int pos); NK_API const char *nk_str_at_const(const struct nk_str*, int pos, nk_rune *unicode, int *len); NK_API char *nk_str_get(struct nk_str*); NK_API const char *nk_str_get_const(const struct nk_str*); NK_API int nk_str_len(struct nk_str*); NK_API int nk_str_len_char(struct nk_str*); /*=============================================================== * * TEXT EDITOR * * ===============================================================*/ /* Editing text in this library is handled by either `nk_edit_string` or * `nk_edit_buffer`. But like almost everything in this library there are multiple * ways of doing it and a balance between control and ease of use with memory * as well as functionality controlled by flags. * * This library generally allows three different levels of memory control: * First of is the most basic way of just providing a simple char array with * string length. This method is probably the easiest way of handling simple * user text input. Main upside is complete control over memory while the biggest * downside in comparison with the other two approaches is missing undo/redo. * * For UIs that require undo/redo the second way was created. It is based on * a fixed size nk_text_edit struct, which has an internal undo/redo stack. * This is mainly useful if you want something more like a text editor but don't want * to have a dynamically growing buffer. * * The final way is using a dynamically growing nk_text_edit struct, which * has both a default version if you don't care where memory comes from and an * allocator version if you do. While the text editor is quite powerful for its * complexity I would not recommend editing gigabytes of data with it. * It is rather designed for uses cases which make sense for a GUI library not for * an full blown text editor. */ #ifndef NK_TEXTEDIT_UNDOSTATECOUNT #define NK_TEXTEDIT_UNDOSTATECOUNT 99 #endif #ifndef NK_TEXTEDIT_UNDOCHARCOUNT #define NK_TEXTEDIT_UNDOCHARCOUNT 999 #endif struct nk_text_edit; struct nk_clipboard { nk_handle userdata; nk_plugin_paste paste; nk_plugin_copy copy; }; struct nk_text_undo_record { int where; short insert_length; short delete_length; short char_storage; }; struct nk_text_undo_state { struct nk_text_undo_record undo_rec[NK_TEXTEDIT_UNDOSTATECOUNT]; nk_rune undo_char[NK_TEXTEDIT_UNDOCHARCOUNT]; short undo_point; short redo_point; short undo_char_point; short redo_char_point; }; enum nk_text_edit_type { NK_TEXT_EDIT_SINGLE_LINE, NK_TEXT_EDIT_MULTI_LINE }; enum nk_text_edit_mode { NK_TEXT_EDIT_MODE_VIEW, NK_TEXT_EDIT_MODE_INSERT, NK_TEXT_EDIT_MODE_REPLACE }; struct nk_text_edit { struct nk_clipboard clip; struct nk_str string; nk_plugin_filter filter; struct nk_vec2 scrollbar; int cursor; int select_start; int select_end; unsigned char mode; unsigned char cursor_at_end_of_line; unsigned char initialized; unsigned char has_preferred_x; unsigned char single_line; unsigned char active; unsigned char padding1; float preferred_x; struct nk_text_undo_state undo; }; /* filter function */ NK_API int nk_filter_default(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_ascii(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_float(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_decimal(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_hex(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_oct(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_binary(const struct nk_text_edit*, nk_rune unicode); /* text editor */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_textedit_init_default(struct nk_text_edit*); #endif NK_API void nk_textedit_init(struct nk_text_edit*, struct nk_allocator*, nk_size size); NK_API void nk_textedit_init_fixed(struct nk_text_edit*, void *memory, nk_size size); NK_API void nk_textedit_free(struct nk_text_edit*); NK_API void nk_textedit_text(struct nk_text_edit*, const char*, int total_len); NK_API void nk_textedit_delete(struct nk_text_edit*, int where, int len); NK_API void nk_textedit_delete_selection(struct nk_text_edit*); NK_API void nk_textedit_select_all(struct nk_text_edit*); NK_API int nk_textedit_cut(struct nk_text_edit*); NK_API int nk_textedit_paste(struct nk_text_edit*, char const*, int len); NK_API void nk_textedit_undo(struct nk_text_edit*); NK_API void nk_textedit_redo(struct nk_text_edit*); /* =============================================================== * * DRAWING * * ===============================================================*/ /* This library was designed to be render backend agnostic so it does not draw anything to screen. Instead all drawn shapes, widgets are made of, are buffered into memory and make up a command queue. Each frame therefore fills the command buffer with draw commands that then need to be executed by the user and his own render backend. After that the command buffer needs to be cleared and a new frame can be started. It is probably important to note that the command buffer is the main drawing API and the optional vertex buffer API only takes this format and converts it into a hardware accessible format. To use the command queue to draw your own widgets you can access the command buffer of each window by calling `nk_window_get_canvas` after previously having called `nk_begin`: void draw_red_rectangle_widget(struct nk_context *ctx) { struct nk_command_buffer *canvas; struct nk_input *input = &ctx->input; canvas = nk_window_get_canvas(ctx); struct nk_rect space; enum nk_widget_layout_states state; state = nk_widget(&space, ctx); if (!state) return; if (state != NK_WIDGET_ROM) update_your_widget_by_user_input(...); nk_fill_rect(canvas, space, 0, nk_rgb(255,0,0)); } if (nk_begin(...)) { nk_layout_row_dynamic(ctx, 25, 1); draw_red_rectangle_widget(ctx); } nk_end(..) Important to know if you want to create your own widgets is the `nk_widget` call. It allocates space on the panel reserved for this widget to be used, but also returns the state of the widget space. If your widget is not seen and does not have to be updated it is '0' and you can just return. If it only has to be drawn the state will be `NK_WIDGET_ROM` otherwise you can do both update and draw your widget. The reason for separating is to only draw and update what is actually necessary which is crucial for performance. */ enum nk_command_type { NK_COMMAND_NOP, NK_COMMAND_SCISSOR, NK_COMMAND_LINE, NK_COMMAND_CURVE, NK_COMMAND_RECT, NK_COMMAND_RECT_FILLED, NK_COMMAND_RECT_MULTI_COLOR, NK_COMMAND_CIRCLE, NK_COMMAND_CIRCLE_FILLED, NK_COMMAND_ARC, NK_COMMAND_ARC_FILLED, NK_COMMAND_TRIANGLE, NK_COMMAND_TRIANGLE_FILLED, NK_COMMAND_POLYGON, NK_COMMAND_POLYGON_FILLED, NK_COMMAND_POLYLINE, NK_COMMAND_TEXT, NK_COMMAND_IMAGE, NK_COMMAND_CUSTOM }; /* command base and header of every command inside the buffer */ struct nk_command { enum nk_command_type type; nk_size next; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; struct nk_command_scissor { struct nk_command header; short x, y; unsigned short w, h; }; struct nk_command_line { struct nk_command header; unsigned short line_thickness; struct nk_vec2i begin; struct nk_vec2i end; struct nk_color color; }; struct nk_command_curve { struct nk_command header; unsigned short line_thickness; struct nk_vec2i begin; struct nk_vec2i end; struct nk_vec2i ctrl[2]; struct nk_color color; }; struct nk_command_rect { struct nk_command header; unsigned short rounding; unsigned short line_thickness; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_rect_filled { struct nk_command header; unsigned short rounding; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_rect_multi_color { struct nk_command header; short x, y; unsigned short w, h; struct nk_color left; struct nk_color top; struct nk_color bottom; struct nk_color right; }; struct nk_command_triangle { struct nk_command header; unsigned short line_thickness; struct nk_vec2i a; struct nk_vec2i b; struct nk_vec2i c; struct nk_color color; }; struct nk_command_triangle_filled { struct nk_command header; struct nk_vec2i a; struct nk_vec2i b; struct nk_vec2i c; struct nk_color color; }; struct nk_command_circle { struct nk_command header; short x, y; unsigned short line_thickness; unsigned short w, h; struct nk_color color; }; struct nk_command_circle_filled { struct nk_command header; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_arc { struct nk_command header; short cx, cy; unsigned short r; unsigned short line_thickness; float a[2]; struct nk_color color; }; struct nk_command_arc_filled { struct nk_command header; short cx, cy; unsigned short r; float a[2]; struct nk_color color; }; struct nk_command_polygon { struct nk_command header; struct nk_color color; unsigned short line_thickness; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_polygon_filled { struct nk_command header; struct nk_color color; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_polyline { struct nk_command header; struct nk_color color; unsigned short line_thickness; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_image { struct nk_command header; short x, y; unsigned short w, h; struct nk_image img; struct nk_color col; }; typedef void (*nk_command_custom_callback)(void *canvas, short x,short y, unsigned short w, unsigned short h, nk_handle callback_data); struct nk_command_custom { struct nk_command header; short x, y; unsigned short w, h; nk_handle callback_data; nk_command_custom_callback callback; }; struct nk_command_text { struct nk_command header; const struct nk_user_font *font; struct nk_color background; struct nk_color foreground; short x, y; unsigned short w, h; float height; int length; char string[1]; }; enum nk_command_clipping { NK_CLIPPING_OFF = nk_false, NK_CLIPPING_ON = nk_true }; struct nk_command_buffer { struct nk_buffer *base; struct nk_rect clip; int use_clipping; nk_handle userdata; nk_size begin, end, last; }; /* shape outlines */ NK_API void nk_stroke_line(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float line_thickness, struct nk_color); NK_API void nk_stroke_curve(struct nk_command_buffer*, float, float, float, float, float, float, float, float, float line_thickness, struct nk_color); NK_API void nk_stroke_rect(struct nk_command_buffer*, struct nk_rect, float rounding, float line_thickness, struct nk_color); NK_API void nk_stroke_circle(struct nk_command_buffer*, struct nk_rect, float line_thickness, struct nk_color); NK_API void nk_stroke_arc(struct nk_command_buffer*, float cx, float cy, float radius, float a_min, float a_max, float line_thickness, struct nk_color); NK_API void nk_stroke_triangle(struct nk_command_buffer*, float, float, float, float, float, float, float line_thichness, struct nk_color); NK_API void nk_stroke_polyline(struct nk_command_buffer*, float *points, int point_count, float line_thickness, struct nk_color col); NK_API void nk_stroke_polygon(struct nk_command_buffer*, float*, int point_count, float line_thickness, struct nk_color); /* filled shades */ NK_API void nk_fill_rect(struct nk_command_buffer*, struct nk_rect, float rounding, struct nk_color); NK_API void nk_fill_rect_multi_color(struct nk_command_buffer*, struct nk_rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom); NK_API void nk_fill_circle(struct nk_command_buffer*, struct nk_rect, struct nk_color); NK_API void nk_fill_arc(struct nk_command_buffer*, float cx, float cy, float radius, float a_min, float a_max, struct nk_color); NK_API void nk_fill_triangle(struct nk_command_buffer*, float x0, float y0, float x1, float y1, float x2, float y2, struct nk_color); NK_API void nk_fill_polygon(struct nk_command_buffer*, float*, int point_count, struct nk_color); /* misc */ NK_API void nk_draw_image(struct nk_command_buffer*, struct nk_rect, const struct nk_image*, struct nk_color); NK_API void nk_draw_text(struct nk_command_buffer*, struct nk_rect, const char *text, int len, const struct nk_user_font*, struct nk_color, struct nk_color); NK_API void nk_push_scissor(struct nk_command_buffer*, struct nk_rect); NK_API void nk_push_custom(struct nk_command_buffer*, struct nk_rect, nk_command_custom_callback, nk_handle usr); /* =============================================================== * * INPUT * * ===============================================================*/ struct nk_mouse_button { int down; unsigned int clicked; struct nk_vec2 clicked_pos; }; struct nk_mouse { struct nk_mouse_button buttons[NK_BUTTON_MAX]; struct nk_vec2 pos; struct nk_vec2 prev; struct nk_vec2 delta; struct nk_vec2 scroll_delta; unsigned char grab; unsigned char grabbed; unsigned char ungrab; }; struct nk_key { int down; unsigned int clicked; }; struct nk_keyboard { struct nk_key keys[NK_KEY_MAX]; char text[NK_INPUT_MAX]; int text_len; }; struct nk_input { struct nk_keyboard keyboard; struct nk_mouse mouse; }; NK_API int nk_input_has_mouse_click(const struct nk_input*, enum nk_buttons); NK_API int nk_input_has_mouse_click_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_has_mouse_click_down_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect, int down); NK_API int nk_input_is_mouse_click_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_is_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down); NK_API int nk_input_any_mouse_click_in_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_is_mouse_prev_hovering_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_is_mouse_hovering_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_mouse_clicked(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_is_mouse_down(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_mouse_pressed(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_mouse_released(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_key_pressed(const struct nk_input*, enum nk_keys); NK_API int nk_input_is_key_released(const struct nk_input*, enum nk_keys); NK_API int nk_input_is_key_down(const struct nk_input*, enum nk_keys); /* =============================================================== * * DRAW LIST * * ===============================================================*/ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT /* The optional vertex buffer draw list provides a 2D drawing context with antialiasing functionality which takes basic filled or outlined shapes or a path and outputs vertexes, elements and draw commands. The actual draw list API is not required to be used directly while using this library since converting the default library draw command output is done by just calling `nk_convert` but I decided to still make this library accessible since it can be useful. The draw list is based on a path buffering and polygon and polyline rendering API which allows a lot of ways to draw 2D content to screen. In fact it is probably more powerful than needed but allows even more crazy things than this library provides by default. */ #ifdef NK_UINT_DRAW_INDEX typedef nk_uint nk_draw_index; #else typedef nk_ushort nk_draw_index; #endif enum nk_draw_list_stroke { NK_STROKE_OPEN = nk_false, /* build up path has no connection back to the beginning */ NK_STROKE_CLOSED = nk_true /* build up path has a connection back to the beginning */ }; enum nk_draw_vertex_layout_attribute { NK_VERTEX_POSITION, NK_VERTEX_COLOR, NK_VERTEX_TEXCOORD, NK_VERTEX_ATTRIBUTE_COUNT }; enum nk_draw_vertex_layout_format { NK_FORMAT_SCHAR, NK_FORMAT_SSHORT, NK_FORMAT_SINT, NK_FORMAT_UCHAR, NK_FORMAT_USHORT, NK_FORMAT_UINT, NK_FORMAT_FLOAT, NK_FORMAT_DOUBLE, NK_FORMAT_COLOR_BEGIN, NK_FORMAT_R8G8B8 = NK_FORMAT_COLOR_BEGIN, NK_FORMAT_R16G15B16, NK_FORMAT_R32G32B32, NK_FORMAT_R8G8B8A8, NK_FORMAT_B8G8R8A8, NK_FORMAT_R16G15B16A16, NK_FORMAT_R32G32B32A32, NK_FORMAT_R32G32B32A32_FLOAT, NK_FORMAT_R32G32B32A32_DOUBLE, NK_FORMAT_RGB32, NK_FORMAT_RGBA32, NK_FORMAT_COLOR_END = NK_FORMAT_RGBA32, NK_FORMAT_COUNT }; #define NK_VERTEX_LAYOUT_END NK_VERTEX_ATTRIBUTE_COUNT,NK_FORMAT_COUNT,0 struct nk_draw_vertex_layout_element { enum nk_draw_vertex_layout_attribute attribute; enum nk_draw_vertex_layout_format format; nk_size offset; }; struct nk_draw_command { unsigned int elem_count; /* number of elements in the current draw batch */ struct nk_rect clip_rect; /* current screen clipping rectangle */ nk_handle texture; /* current texture to set */ #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; struct nk_draw_list { struct nk_rect clip_rect; struct nk_vec2 circle_vtx[12]; struct nk_convert_config config; struct nk_buffer *buffer; struct nk_buffer *vertices; struct nk_buffer *elements; unsigned int element_count; unsigned int vertex_count; unsigned int cmd_count; nk_size cmd_offset; unsigned int path_count; unsigned int path_offset; enum nk_anti_aliasing line_AA; enum nk_anti_aliasing shape_AA; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; /* draw list */ NK_API void nk_draw_list_init(struct nk_draw_list*); NK_API void nk_draw_list_setup(struct nk_draw_list*, const struct nk_convert_config*, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, enum nk_anti_aliasing line_aa,enum nk_anti_aliasing shape_aa); /* drawing */ #define nk_draw_list_foreach(cmd, can, b) for((cmd)=nk__draw_list_begin(can, b); (cmd)!=0; (cmd)=nk__draw_list_next(cmd, b, can)) NK_API const struct nk_draw_command* nk__draw_list_begin(const struct nk_draw_list*, const struct nk_buffer*); NK_API const struct nk_draw_command* nk__draw_list_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_draw_list*); NK_API const struct nk_draw_command* nk__draw_list_end(const struct nk_draw_list*, const struct nk_buffer*); /* path */ NK_API void nk_draw_list_path_clear(struct nk_draw_list*); NK_API void nk_draw_list_path_line_to(struct nk_draw_list*, struct nk_vec2 pos); NK_API void nk_draw_list_path_arc_to_fast(struct nk_draw_list*, struct nk_vec2 center, float radius, int a_min, int a_max); NK_API void nk_draw_list_path_arc_to(struct nk_draw_list*, struct nk_vec2 center, float radius, float a_min, float a_max, unsigned int segments); NK_API void nk_draw_list_path_rect_to(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, float rounding); NK_API void nk_draw_list_path_curve_to(struct nk_draw_list*, struct nk_vec2 p2, struct nk_vec2 p3, struct nk_vec2 p4, unsigned int num_segments); NK_API void nk_draw_list_path_fill(struct nk_draw_list*, struct nk_color); NK_API void nk_draw_list_path_stroke(struct nk_draw_list*, struct nk_color, enum nk_draw_list_stroke closed, float thickness); /* stroke */ NK_API void nk_draw_list_stroke_line(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_color, float thickness); NK_API void nk_draw_list_stroke_rect(struct nk_draw_list*, struct nk_rect rect, struct nk_color, float rounding, float thickness); NK_API void nk_draw_list_stroke_triangle(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color, float thickness); NK_API void nk_draw_list_stroke_circle(struct nk_draw_list*, struct nk_vec2 center, float radius, struct nk_color, unsigned int segs, float thickness); NK_API void nk_draw_list_stroke_curve(struct nk_draw_list*, struct nk_vec2 p0, struct nk_vec2 cp0, struct nk_vec2 cp1, struct nk_vec2 p1, struct nk_color, unsigned int segments, float thickness); NK_API void nk_draw_list_stroke_poly_line(struct nk_draw_list*, const struct nk_vec2 *pnts, const unsigned int cnt, struct nk_color, enum nk_draw_list_stroke, float thickness, enum nk_anti_aliasing); /* fill */ NK_API void nk_draw_list_fill_rect(struct nk_draw_list*, struct nk_rect rect, struct nk_color, float rounding); NK_API void nk_draw_list_fill_rect_multi_color(struct nk_draw_list*, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom); NK_API void nk_draw_list_fill_triangle(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color); NK_API void nk_draw_list_fill_circle(struct nk_draw_list*, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs); NK_API void nk_draw_list_fill_poly_convex(struct nk_draw_list*, const struct nk_vec2 *points, const unsigned int count, struct nk_color, enum nk_anti_aliasing); /* misc */ NK_API void nk_draw_list_add_image(struct nk_draw_list*, struct nk_image texture, struct nk_rect rect, struct nk_color); NK_API void nk_draw_list_add_text(struct nk_draw_list*, const struct nk_user_font*, struct nk_rect, const char *text, int len, float font_height, struct nk_color); #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_draw_list_push_userdata(struct nk_draw_list*, nk_handle userdata); #endif #endif /* =============================================================== * * GUI * * ===============================================================*/ enum nk_style_item_type { NK_STYLE_ITEM_COLOR, NK_STYLE_ITEM_IMAGE }; union nk_style_item_data { struct nk_image image; struct nk_color color; }; struct nk_style_item { enum nk_style_item_type type; union nk_style_item_data data; }; struct nk_style_text { struct nk_color color; struct nk_vec2 padding; }; struct nk_style_button { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* text */ struct nk_color text_background; struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; nk_flags text_alignment; /* properties */ float border; float rounding; struct nk_vec2 padding; struct nk_vec2 image_padding; struct nk_vec2 touch_padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle userdata); void(*draw_end)(struct nk_command_buffer*, nk_handle userdata); }; struct nk_style_toggle { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; /* text */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; struct nk_color text_background; nk_flags text_alignment; /* properties */ struct nk_vec2 padding; struct nk_vec2 touch_padding; float spacing; float border; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_selectable { /* background (inactive) */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item pressed; /* background (active) */ struct nk_style_item normal_active; struct nk_style_item hover_active; struct nk_style_item pressed_active; /* text color (inactive) */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_pressed; /* text color (active) */ struct nk_color text_normal_active; struct nk_color text_hover_active; struct nk_color text_pressed_active; struct nk_color text_background; nk_flags text_alignment; /* properties */ float rounding; struct nk_vec2 padding; struct nk_vec2 touch_padding; struct nk_vec2 image_padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_slider { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* background bar */ struct nk_color bar_normal; struct nk_color bar_hover; struct nk_color bar_active; struct nk_color bar_filled; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; /* properties */ float border; float rounding; float bar_height; struct nk_vec2 padding; struct nk_vec2 spacing; struct nk_vec2 cursor_size; /* optional buttons */ int show_buttons; struct nk_style_button inc_button; struct nk_style_button dec_button; enum nk_symbol_type inc_symbol; enum nk_symbol_type dec_symbol; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_progress { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; struct nk_color cursor_border_color; /* properties */ float rounding; float border; float cursor_border; float cursor_rounding; struct nk_vec2 padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_scrollbar { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; struct nk_color cursor_border_color; /* properties */ float border; float rounding; float border_cursor; float rounding_cursor; struct nk_vec2 padding; /* optional buttons */ int show_buttons; struct nk_style_button inc_button; struct nk_style_button dec_button; enum nk_symbol_type inc_symbol; enum nk_symbol_type dec_symbol; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_edit { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; struct nk_style_scrollbar scrollbar; /* cursor */ struct nk_color cursor_normal; struct nk_color cursor_hover; struct nk_color cursor_text_normal; struct nk_color cursor_text_hover; /* text (unselected) */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; /* text (selected) */ struct nk_color selected_normal; struct nk_color selected_hover; struct nk_color selected_text_normal; struct nk_color selected_text_hover; /* properties */ float border; float rounding; float cursor_size; struct nk_vec2 scrollbar_size; struct nk_vec2 padding; float row_padding; }; struct nk_style_property { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* text */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* symbols */ enum nk_symbol_type sym_left; enum nk_symbol_type sym_right; /* properties */ float border; float rounding; struct nk_vec2 padding; struct nk_style_edit edit; struct nk_style_button inc_button; struct nk_style_button dec_button; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_chart { /* colors */ struct nk_style_item background; struct nk_color border_color; struct nk_color selected_color; struct nk_color color; /* properties */ float border; float rounding; struct nk_vec2 padding; }; struct nk_style_combo { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* label */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* symbol */ struct nk_color symbol_normal; struct nk_color symbol_hover; struct nk_color symbol_active; /* button */ struct nk_style_button button; enum nk_symbol_type sym_normal; enum nk_symbol_type sym_hover; enum nk_symbol_type sym_active; /* properties */ float border; float rounding; struct nk_vec2 content_padding; struct nk_vec2 button_padding; struct nk_vec2 spacing; }; struct nk_style_tab { /* background */ struct nk_style_item background; struct nk_color border_color; struct nk_color text; /* button */ struct nk_style_button tab_maximize_button; struct nk_style_button tab_minimize_button; struct nk_style_button node_maximize_button; struct nk_style_button node_minimize_button; enum nk_symbol_type sym_minimize; enum nk_symbol_type sym_maximize; /* properties */ float border; float rounding; float indent; struct nk_vec2 padding; struct nk_vec2 spacing; }; enum nk_style_header_align { NK_HEADER_LEFT, NK_HEADER_RIGHT }; struct nk_style_window_header { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; /* button */ struct nk_style_button close_button; struct nk_style_button minimize_button; enum nk_symbol_type close_symbol; enum nk_symbol_type minimize_symbol; enum nk_symbol_type maximize_symbol; /* title */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* properties */ enum nk_style_header_align align; struct nk_vec2 padding; struct nk_vec2 label_padding; struct nk_vec2 spacing; }; struct nk_style_window { struct nk_style_window_header header; struct nk_style_item fixed_background; struct nk_color background; struct nk_color border_color; struct nk_color popup_border_color; struct nk_color combo_border_color; struct nk_color contextual_border_color; struct nk_color menu_border_color; struct nk_color group_border_color; struct nk_color tooltip_border_color; struct nk_style_item scaler; float border; float combo_border; float contextual_border; float menu_border; float group_border; float tooltip_border; float popup_border; float min_row_height_padding; float rounding; struct nk_vec2 spacing; struct nk_vec2 scrollbar_size; struct nk_vec2 min_size; struct nk_vec2 padding; struct nk_vec2 group_padding; struct nk_vec2 popup_padding; struct nk_vec2 combo_padding; struct nk_vec2 contextual_padding; struct nk_vec2 menu_padding; struct nk_vec2 tooltip_padding; }; struct nk_style { const struct nk_user_font *font; const struct nk_cursor *cursors[NK_CURSOR_COUNT]; const struct nk_cursor *cursor_active; struct nk_cursor *cursor_last; int cursor_visible; struct nk_style_text text; struct nk_style_button button; struct nk_style_button contextual_button; struct nk_style_button menu_button; struct nk_style_toggle option; struct nk_style_toggle checkbox; struct nk_style_selectable selectable; struct nk_style_slider slider; struct nk_style_progress progress; struct nk_style_property property; struct nk_style_edit edit; struct nk_style_chart chart; struct nk_style_scrollbar scrollh; struct nk_style_scrollbar scrollv; struct nk_style_tab tab; struct nk_style_combo combo; struct nk_style_window window; }; NK_API struct nk_style_item nk_style_item_image(struct nk_image img); NK_API struct nk_style_item nk_style_item_color(struct nk_color); NK_API struct nk_style_item nk_style_item_hide(void); /*============================================================== * PANEL * =============================================================*/ #ifndef NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS #define NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS 16 #endif #ifndef NK_CHART_MAX_SLOT #define NK_CHART_MAX_SLOT 4 #endif enum nk_panel_type { NK_PANEL_NONE = 0, NK_PANEL_WINDOW = NK_FLAG(0), NK_PANEL_GROUP = NK_FLAG(1), NK_PANEL_POPUP = NK_FLAG(2), NK_PANEL_CONTEXTUAL = NK_FLAG(4), NK_PANEL_COMBO = NK_FLAG(5), NK_PANEL_MENU = NK_FLAG(6), NK_PANEL_TOOLTIP = NK_FLAG(7) }; enum nk_panel_set { NK_PANEL_SET_NONBLOCK = NK_PANEL_CONTEXTUAL|NK_PANEL_COMBO|NK_PANEL_MENU|NK_PANEL_TOOLTIP, NK_PANEL_SET_POPUP = NK_PANEL_SET_NONBLOCK|NK_PANEL_POPUP, NK_PANEL_SET_SUB = NK_PANEL_SET_POPUP|NK_PANEL_GROUP }; struct nk_chart_slot { enum nk_chart_type type; struct nk_color color; struct nk_color highlight; float min, max, range; int count; struct nk_vec2 last; int index; }; struct nk_chart { int slot; float x, y, w, h; struct nk_chart_slot slots[NK_CHART_MAX_SLOT]; }; enum nk_panel_row_layout_type { NK_LAYOUT_DYNAMIC_FIXED = 0, NK_LAYOUT_DYNAMIC_ROW, NK_LAYOUT_DYNAMIC_FREE, NK_LAYOUT_DYNAMIC, NK_LAYOUT_STATIC_FIXED, NK_LAYOUT_STATIC_ROW, NK_LAYOUT_STATIC_FREE, NK_LAYOUT_STATIC, NK_LAYOUT_TEMPLATE, NK_LAYOUT_COUNT }; struct nk_row_layout { enum nk_panel_row_layout_type type; int index; float height; float min_height; int columns; const float *ratio; float item_width; float item_height; float item_offset; float filled; struct nk_rect item; int tree_depth; float templates[NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS]; }; struct nk_popup_buffer { nk_size begin; nk_size parent; nk_size last; nk_size end; int active; }; struct nk_menu_state { float x, y, w, h; struct nk_scroll offset; }; struct nk_panel { enum nk_panel_type type; nk_flags flags; struct nk_rect bounds; nk_uint *offset_x; nk_uint *offset_y; float at_x, at_y, max_x; float footer_height; float header_height; float border; unsigned int has_scrolling; struct nk_rect clip; struct nk_menu_state menu; struct nk_row_layout row; struct nk_chart chart; struct nk_command_buffer *buffer; struct nk_panel *parent; }; /*============================================================== * WINDOW * =============================================================*/ #ifndef NK_WINDOW_MAX_NAME #define NK_WINDOW_MAX_NAME 64 #endif struct nk_table; enum nk_window_flags { NK_WINDOW_PRIVATE = NK_FLAG(11), NK_WINDOW_DYNAMIC = NK_WINDOW_PRIVATE, /* special window type growing up in height while being filled to a certain maximum height */ NK_WINDOW_ROM = NK_FLAG(12), /* sets window widgets into a read only mode and does not allow input changes */ NK_WINDOW_NOT_INTERACTIVE = NK_WINDOW_ROM|NK_WINDOW_NO_INPUT, /* prevents all interaction caused by input to either window or widgets inside */ NK_WINDOW_HIDDEN = NK_FLAG(13), /* Hides window and stops any window interaction and drawing */ NK_WINDOW_CLOSED = NK_FLAG(14), /* Directly closes and frees the window at the end of the frame */ NK_WINDOW_MINIMIZED = NK_FLAG(15), /* marks the window as minimized */ NK_WINDOW_REMOVE_ROM = NK_FLAG(16) /* Removes read only mode at the end of the window */ }; struct nk_popup_state { struct nk_window *win; enum nk_panel_type type; struct nk_popup_buffer buf; nk_hash name; int active; unsigned combo_count; unsigned con_count, con_old; unsigned active_con; struct nk_rect header; }; struct nk_edit_state { nk_hash name; unsigned int seq; unsigned int old; int active, prev; int cursor; int sel_start; int sel_end; struct nk_scroll scrollbar; unsigned char mode; unsigned char single_line; }; struct nk_property_state { int active, prev; char buffer[NK_MAX_NUMBER_BUFFER]; int length; int cursor; int select_start; int select_end; nk_hash name; unsigned int seq; unsigned int old; int state; }; struct nk_window { unsigned int seq; nk_hash name; char name_string[NK_WINDOW_MAX_NAME]; nk_flags flags; struct nk_rect bounds; struct nk_scroll scrollbar; struct nk_command_buffer buffer; struct nk_panel *layout; float scrollbar_hiding_timer; /* persistent widget state */ struct nk_property_state property; struct nk_popup_state popup; struct nk_edit_state edit; unsigned int scrolled; struct nk_table *tables; unsigned int table_count; /* window list hooks */ struct nk_window *next; struct nk_window *prev; struct nk_window *parent; }; /*============================================================== * STACK * =============================================================*/ /* The style modifier stack can be used to temporarily change a * property inside `nk_style`. For example if you want a special * red button you can temporarily push the old button color onto a stack * draw the button with a red color and then you just pop the old color * back from the stack: * * nk_style_push_style_item(ctx, &ctx->style.button.normal, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_style_item(ctx, &ctx->style.button.hover, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_style_item(ctx, &ctx->style.button.active, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_vec2(ctx, &cx->style.button.padding, nk_vec2(2,2)); * * nk_button(...); * * nk_style_pop_style_item(ctx); * nk_style_pop_style_item(ctx); * nk_style_pop_style_item(ctx); * nk_style_pop_vec2(ctx); * * Nuklear has a stack for style_items, float properties, vector properties, * flags, colors, fonts and for button_behavior. Each has it's own fixed size stack * which can be changed at compile time. */ #ifndef NK_BUTTON_BEHAVIOR_STACK_SIZE #define NK_BUTTON_BEHAVIOR_STACK_SIZE 8 #endif #ifndef NK_FONT_STACK_SIZE #define NK_FONT_STACK_SIZE 8 #endif #ifndef NK_STYLE_ITEM_STACK_SIZE #define NK_STYLE_ITEM_STACK_SIZE 16 #endif #ifndef NK_FLOAT_STACK_SIZE #define NK_FLOAT_STACK_SIZE 32 #endif #ifndef NK_VECTOR_STACK_SIZE #define NK_VECTOR_STACK_SIZE 16 #endif #ifndef NK_FLAGS_STACK_SIZE #define NK_FLAGS_STACK_SIZE 32 #endif #ifndef NK_COLOR_STACK_SIZE #define NK_COLOR_STACK_SIZE 32 #endif #define NK_CONFIGURATION_STACK_TYPE(prefix, name, type)\ struct nk_config_stack_##name##_element {\ prefix##_##type *address;\ prefix##_##type old_value;\ } #define NK_CONFIG_STACK(type,size)\ struct nk_config_stack_##type {\ int head;\ struct nk_config_stack_##type##_element elements[size];\ } #define nk_float float NK_CONFIGURATION_STACK_TYPE(struct nk, style_item, style_item); NK_CONFIGURATION_STACK_TYPE(nk ,float, float); NK_CONFIGURATION_STACK_TYPE(struct nk, vec2, vec2); NK_CONFIGURATION_STACK_TYPE(nk ,flags, flags); NK_CONFIGURATION_STACK_TYPE(struct nk, color, color); NK_CONFIGURATION_STACK_TYPE(const struct nk, user_font, user_font*); NK_CONFIGURATION_STACK_TYPE(enum nk, button_behavior, button_behavior); NK_CONFIG_STACK(style_item, NK_STYLE_ITEM_STACK_SIZE); NK_CONFIG_STACK(float, NK_FLOAT_STACK_SIZE); NK_CONFIG_STACK(vec2, NK_VECTOR_STACK_SIZE); NK_CONFIG_STACK(flags, NK_FLAGS_STACK_SIZE); NK_CONFIG_STACK(color, NK_COLOR_STACK_SIZE); NK_CONFIG_STACK(user_font, NK_FONT_STACK_SIZE); NK_CONFIG_STACK(button_behavior, NK_BUTTON_BEHAVIOR_STACK_SIZE); struct nk_configuration_stacks { struct nk_config_stack_style_item style_items; struct nk_config_stack_float floats; struct nk_config_stack_vec2 vectors; struct nk_config_stack_flags flags; struct nk_config_stack_color colors; struct nk_config_stack_user_font fonts; struct nk_config_stack_button_behavior button_behaviors; }; /*============================================================== * CONTEXT * =============================================================*/ #define NK_VALUE_PAGE_CAPACITY \ (((NK_MAX(sizeof(struct nk_window),sizeof(struct nk_panel)) / sizeof(nk_uint))) / 2) struct nk_table { unsigned int seq; unsigned int size; nk_hash keys[NK_VALUE_PAGE_CAPACITY]; nk_uint values[NK_VALUE_PAGE_CAPACITY]; struct nk_table *next, *prev; }; union nk_page_data { struct nk_table tbl; struct nk_panel pan; struct nk_window win; }; struct nk_page_element { union nk_page_data data; struct nk_page_element *next; struct nk_page_element *prev; }; struct nk_page { unsigned int size; struct nk_page *next; struct nk_page_element win[1]; }; struct nk_pool { struct nk_allocator alloc; enum nk_allocation_type type; unsigned int page_count; struct nk_page *pages; struct nk_page_element *freelist; unsigned capacity; nk_size size; nk_size cap; }; struct nk_context { /* public: can be accessed freely */ struct nk_input input; struct nk_style style; struct nk_buffer memory; struct nk_clipboard clip; nk_flags last_widget_state; enum nk_button_behavior button_behavior; struct nk_configuration_stacks stacks; float delta_time_seconds; /* private: should only be accessed if you know what you are doing */ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT struct nk_draw_list draw_list; #endif #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif /* text editor objects are quite big because of an internal * undo/redo stack. Therefore it does not make sense to have one for * each window for temporary use cases, so I only provide *one* instance * for all windows. This works because the content is cleared anyway */ struct nk_text_edit text_edit; /* draw buffer used for overlay drawing operation like cursor */ struct nk_command_buffer overlay; /* windows */ int build; int use_pool; struct nk_pool pool; struct nk_window *begin; struct nk_window *end; struct nk_window *active; struct nk_window *current; struct nk_page_element *freelist; unsigned int count; unsigned int seq; }; /* ============================================================== * MATH * =============================================================== */ #define NK_PI 3.141592654f #define NK_UTF_INVALID 0xFFFD #define NK_MAX_FLOAT_PRECISION 2 #define NK_UNUSED(x) ((void)(x)) #define NK_SATURATE(x) (NK_MAX(0, NK_MIN(1.0f, x))) #define NK_LEN(a) (sizeof(a)/sizeof(a)[0]) #define NK_ABS(a) (((a) < 0) ? -(a) : (a)) #define NK_BETWEEN(x, a, b) ((a) <= (x) && (x) < (b)) #define NK_INBOX(px, py, x, y, w, h)\ (NK_BETWEEN(px,x,x+w) && NK_BETWEEN(py,y,y+h)) #define NK_INTERSECT(x0, y0, w0, h0, x1, y1, w1, h1) \ (!(((x1 > (x0 + w0)) || ((x1 + w1) < x0) || (y1 > (y0 + h0)) || (y1 + h1) < y0))) #define NK_CONTAINS(x, y, w, h, bx, by, bw, bh)\ (NK_INBOX(x,y, bx, by, bw, bh) && NK_INBOX(x+w,y+h, bx, by, bw, bh)) #define nk_vec2_sub(a, b) nk_vec2((a).x - (b).x, (a).y - (b).y) #define nk_vec2_add(a, b) nk_vec2((a).x + (b).x, (a).y + (b).y) #define nk_vec2_len_sqr(a) ((a).x*(a).x+(a).y*(a).y) #define nk_vec2_muls(a, t) nk_vec2((a).x * (t), (a).y * (t)) #define nk_ptr_add(t, p, i) ((t*)((void*)((nk_byte*)(p) + (i)))) #define nk_ptr_add_const(t, p, i) ((const t*)((const void*)((const nk_byte*)(p) + (i)))) #define nk_zero_struct(s) nk_zero(&s, sizeof(s)) /* ============================================================== * ALIGNMENT * =============================================================== */ /* Pointer to Integer type conversion for pointer alignment */ #if defined(__PTRDIFF_TYPE__) /* This case should work for GCC*/ # define NK_UINT_TO_PTR(x) ((void*)(__PTRDIFF_TYPE__)(x)) # define NK_PTR_TO_UINT(x) ((nk_size)(__PTRDIFF_TYPE__)(x)) #elif !defined(__GNUC__) /* works for compilers other than LLVM */ # define NK_UINT_TO_PTR(x) ((void*)&((char*)0)[x]) # define NK_PTR_TO_UINT(x) ((nk_size)(((char*)x)-(char*)0)) #elif defined(NK_USE_FIXED_TYPES) /* used if we have */ # define NK_UINT_TO_PTR(x) ((void*)(uintptr_t)(x)) # define NK_PTR_TO_UINT(x) ((uintptr_t)(x)) #else /* generates warning but works */ # define NK_UINT_TO_PTR(x) ((void*)(x)) # define NK_PTR_TO_UINT(x) ((nk_size)(x)) #endif #define NK_ALIGN_PTR(x, mask)\ (NK_UINT_TO_PTR((NK_PTR_TO_UINT((nk_byte*)(x) + (mask-1)) & ~(mask-1)))) #define NK_ALIGN_PTR_BACK(x, mask)\ (NK_UINT_TO_PTR((NK_PTR_TO_UINT((nk_byte*)(x)) & ~(mask-1)))) #define NK_OFFSETOF(st,m) ((nk_ptr)&(((st*)0)->m)) #define NK_CONTAINER_OF(ptr,type,member)\ (type*)((void*)((char*)(1 ? (ptr): &((type*)0)->member) - NK_OFFSETOF(type, member))) #ifdef __cplusplus } #endif #ifdef __cplusplus template struct nk_alignof; template struct nk_helper{enum {value = size_diff};}; template struct nk_helper{enum {value = nk_alignof::value};}; template struct nk_alignof{struct Big {T x; char c;}; enum { diff = sizeof(Big) - sizeof(T), value = nk_helper::value};}; #define NK_ALIGNOF(t) (nk_alignof::value) #elif defined(_MSC_VER) #define NK_ALIGNOF(t) (__alignof(t)) #else #define NK_ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0) #endif #endif /* NK_NUKLEAR_H_ */ #ifdef NK_IMPLEMENTATION #ifndef NK_INTERNAL_H #define NK_INTERNAL_H #ifndef NK_POOL_DEFAULT_CAPACITY #define NK_POOL_DEFAULT_CAPACITY 16 #endif #ifndef NK_DEFAULT_COMMAND_BUFFER_SIZE #define NK_DEFAULT_COMMAND_BUFFER_SIZE (4*1024) #endif #ifndef NK_BUFFER_DEFAULT_INITIAL_SIZE #define NK_BUFFER_DEFAULT_INITIAL_SIZE (4*1024) #endif /* standard library headers */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR #include /* malloc, free */ #endif #ifdef NK_INCLUDE_STANDARD_IO #include /* fopen, fclose,... */ #endif #ifdef NK_INCLUDE_STANDARD_VARARGS #include /* valist, va_start, va_end, ... */ #endif #ifndef NK_ASSERT #include #define NK_ASSERT(expr) assert(expr) #endif #ifndef NK_MEMSET #define NK_MEMSET nk_memset #endif #ifndef NK_MEMCPY #define NK_MEMCPY nk_memcopy #endif #ifndef NK_SQRT #define NK_SQRT nk_sqrt #endif #ifndef NK_SIN #define NK_SIN nk_sin #endif #ifndef NK_COS #define NK_COS nk_cos #endif #ifndef NK_STRTOD #define NK_STRTOD nk_strtod #endif #ifndef NK_DTOA #define NK_DTOA nk_dtoa #endif #define NK_DEFAULT (-1) #ifndef NK_VSNPRINTF /* If your compiler does support `vsnprintf` I would highly recommend * defining this to vsnprintf instead since `vsprintf` is basically * unbelievable unsafe and should *NEVER* be used. But I have to support * it since C89 only provides this unsafe version. */ #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) ||\ (defined(__cplusplus) && (__cplusplus >= 201103L)) || \ (defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L)) ||\ (defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 500)) ||\ defined(_ISOC99_SOURCE) || defined(_BSD_SOURCE) #define NK_VSNPRINTF(s,n,f,a) vsnprintf(s,n,f,a) #else #define NK_VSNPRINTF(s,n,f,a) vsprintf(s,f,a) #endif #endif #define NK_SCHAR_MIN (-127) #define NK_SCHAR_MAX 127 #define NK_UCHAR_MIN 0 #define NK_UCHAR_MAX 256 #define NK_SSHORT_MIN (-32767) #define NK_SSHORT_MAX 32767 #define NK_USHORT_MIN 0 #define NK_USHORT_MAX 65535 #define NK_SINT_MIN (-2147483647) #define NK_SINT_MAX 2147483647 #define NK_UINT_MIN 0 #define NK_UINT_MAX 4294967295u /* Make sure correct type size: * This will fire with a negative subscript error if the type sizes * are set incorrectly by the compiler, and compile out if not */ NK_STATIC_ASSERT(sizeof(nk_size) >= sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_ptr) == sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_flags) >= 4); NK_STATIC_ASSERT(sizeof(nk_rune) >= 4); NK_STATIC_ASSERT(sizeof(nk_ushort) == 2); NK_STATIC_ASSERT(sizeof(nk_short) == 2); NK_STATIC_ASSERT(sizeof(nk_uint) == 4); NK_STATIC_ASSERT(sizeof(nk_int) == 4); NK_STATIC_ASSERT(sizeof(nk_byte) == 1); NK_GLOBAL const struct nk_rect nk_null_rect = {-8192.0f, -8192.0f, 16384, 16384}; #define NK_FLOAT_PRECISION 0.00000000000001 NK_GLOBAL const struct nk_color nk_red = {255,0,0,255}; NK_GLOBAL const struct nk_color nk_green = {0,255,0,255}; NK_GLOBAL const struct nk_color nk_blue = {0,0,255,255}; NK_GLOBAL const struct nk_color nk_white = {255,255,255,255}; NK_GLOBAL const struct nk_color nk_black = {0,0,0,255}; NK_GLOBAL const struct nk_color nk_yellow = {255,255,0,255}; /* widget */ #define nk_widget_state_reset(s)\ if ((*(s)) & NK_WIDGET_STATE_MODIFIED)\ (*(s)) = NK_WIDGET_STATE_INACTIVE|NK_WIDGET_STATE_MODIFIED;\ else (*(s)) = NK_WIDGET_STATE_INACTIVE; /* math */ NK_LIB float nk_inv_sqrt(float n); NK_LIB float nk_sqrt(float x); NK_LIB float nk_sin(float x); NK_LIB float nk_cos(float x); NK_LIB nk_uint nk_round_up_pow2(nk_uint v); NK_LIB struct nk_rect nk_shrink_rect(struct nk_rect r, float amount); NK_LIB struct nk_rect nk_pad_rect(struct nk_rect r, struct nk_vec2 pad); NK_LIB void nk_unify(struct nk_rect *clip, const struct nk_rect *a, float x0, float y0, float x1, float y1); NK_LIB double nk_pow(double x, int n); NK_LIB int nk_ifloord(double x); NK_LIB int nk_ifloorf(float x); NK_LIB int nk_iceilf(float x); NK_LIB int nk_log10(double n); /* util */ enum {NK_DO_NOT_STOP_ON_NEW_LINE, NK_STOP_ON_NEW_LINE}; NK_LIB int nk_is_lower(int c); NK_LIB int nk_is_upper(int c); NK_LIB int nk_to_upper(int c); NK_LIB int nk_to_lower(int c); NK_LIB void* nk_memcopy(void *dst, const void *src, nk_size n); NK_LIB void nk_memset(void *ptr, int c0, nk_size size); NK_LIB void nk_zero(void *ptr, nk_size size); NK_LIB char *nk_itoa(char *s, long n); NK_LIB int nk_string_float_limit(char *string, int prec); NK_LIB char *nk_dtoa(char *s, double n); NK_LIB int nk_text_clamp(const struct nk_user_font *font, const char *text, int text_len, float space, int *glyphs, float *text_width, nk_rune *sep_list, int sep_count); NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *font, const char *begin, int byte_len, float row_height, const char **remaining, struct nk_vec2 *out_offset, int *glyphs, int op); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args); #endif #ifdef NK_INCLUDE_STANDARD_IO NK_LIB char *nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc); #endif /* buffer */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_LIB void* nk_malloc(nk_handle unused, void *old,nk_size size); NK_LIB void nk_mfree(nk_handle unused, void *ptr); #endif NK_LIB void* nk_buffer_align(void *unaligned, nk_size align, nk_size *alignment, enum nk_buffer_allocation_type type); NK_LIB void* nk_buffer_alloc(struct nk_buffer *b, enum nk_buffer_allocation_type type, nk_size size, nk_size align); NK_LIB void* nk_buffer_realloc(struct nk_buffer *b, nk_size capacity, nk_size *size); /* draw */ NK_LIB void nk_command_buffer_init(struct nk_command_buffer *cb, struct nk_buffer *b, enum nk_command_clipping clip); NK_LIB void nk_command_buffer_reset(struct nk_command_buffer *b); NK_LIB void* nk_command_buffer_push(struct nk_command_buffer* b, enum nk_command_type t, nk_size size); NK_LIB void nk_draw_symbol(struct nk_command_buffer *out, enum nk_symbol_type type, struct nk_rect content, struct nk_color background, struct nk_color foreground, float border_width, const struct nk_user_font *font); /* buffering */ NK_LIB void nk_start_buffer(struct nk_context *ctx, struct nk_command_buffer *b); NK_LIB void nk_start(struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_start_popup(struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_finish_popup(struct nk_context *ctx, struct nk_window*); NK_LIB void nk_finish_buffer(struct nk_context *ctx, struct nk_command_buffer *b); NK_LIB void nk_finish(struct nk_context *ctx, struct nk_window *w); NK_LIB void nk_build(struct nk_context *ctx); /* text editor */ NK_LIB void nk_textedit_clear_state(struct nk_text_edit *state, enum nk_text_edit_type type, nk_plugin_filter filter); NK_LIB void nk_textedit_click(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height); NK_LIB void nk_textedit_drag(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height); NK_LIB void nk_textedit_key(struct nk_text_edit *state, enum nk_keys key, int shift_mod, const struct nk_user_font *font, float row_height); /* window */ enum nk_window_insert_location { NK_INSERT_BACK, /* inserts window into the back of list (front of screen) */ NK_INSERT_FRONT /* inserts window into the front of list (back of screen) */ }; NK_LIB void *nk_create_window(struct nk_context *ctx); NK_LIB void nk_remove_window(struct nk_context*, struct nk_window*); NK_LIB void nk_free_window(struct nk_context *ctx, struct nk_window *win); NK_LIB struct nk_window *nk_find_window(struct nk_context *ctx, nk_hash hash, const char *name); NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc); /* pool */ NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity); NK_LIB void nk_pool_free(struct nk_pool *pool); NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size); NK_LIB struct nk_page_element *nk_pool_alloc(struct nk_pool *pool); /* page-element */ NK_LIB struct nk_page_element* nk_create_page_element(struct nk_context *ctx); NK_LIB void nk_link_page_element_into_freelist(struct nk_context *ctx, struct nk_page_element *elem); NK_LIB void nk_free_page_element(struct nk_context *ctx, struct nk_page_element *elem); /* table */ NK_LIB struct nk_table* nk_create_table(struct nk_context *ctx); NK_LIB void nk_remove_table(struct nk_window *win, struct nk_table *tbl); NK_LIB void nk_free_table(struct nk_context *ctx, struct nk_table *tbl); NK_LIB void nk_push_table(struct nk_window *win, struct nk_table *tbl); NK_LIB nk_uint *nk_add_value(struct nk_context *ctx, struct nk_window *win, nk_hash name, nk_uint value); NK_LIB nk_uint *nk_find_value(struct nk_window *win, nk_hash name); /* panel */ NK_LIB void *nk_create_panel(struct nk_context *ctx); NK_LIB void nk_free_panel(struct nk_context*, struct nk_panel *pan); NK_LIB int nk_panel_has_header(nk_flags flags, const char *title); NK_LIB struct nk_vec2 nk_panel_get_padding(const struct nk_style *style, enum nk_panel_type type); NK_LIB float nk_panel_get_border(const struct nk_style *style, nk_flags flags, enum nk_panel_type type); NK_LIB struct nk_color nk_panel_get_border_color(const struct nk_style *style, enum nk_panel_type type); NK_LIB int nk_panel_is_sub(enum nk_panel_type type); NK_LIB int nk_panel_is_nonblock(enum nk_panel_type type); NK_LIB int nk_panel_begin(struct nk_context *ctx, const char *title, enum nk_panel_type panel_type); NK_LIB void nk_panel_end(struct nk_context *ctx); /* layout */ NK_LIB float nk_layout_row_calculate_usable_space(const struct nk_style *style, enum nk_panel_type type, float total_space, int columns); NK_LIB void nk_panel_layout(const struct nk_context *ctx, struct nk_window *win, float height, int cols); NK_LIB void nk_row_layout(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, int width); NK_LIB void nk_panel_alloc_row(const struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_layout_widget_space(struct nk_rect *bounds, const struct nk_context *ctx, struct nk_window *win, int modify); NK_LIB void nk_panel_alloc_space(struct nk_rect *bounds, const struct nk_context *ctx); NK_LIB void nk_layout_peek(struct nk_rect *bounds, struct nk_context *ctx); /* popup */ NK_LIB int nk_nonblock_begin(struct nk_context *ctx, nk_flags flags, struct nk_rect body, struct nk_rect header, enum nk_panel_type panel_type); /* text */ struct nk_text { struct nk_vec2 padding; struct nk_color background; struct nk_color text; }; NK_LIB void nk_widget_text(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, nk_flags a, const struct nk_user_font *f); NK_LIB void nk_widget_text_wrap(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, const struct nk_user_font *f); /* button */ NK_LIB int nk_button_behavior(nk_flags *state, struct nk_rect r, const struct nk_input *i, enum nk_button_behavior behavior); NK_LIB const struct nk_style_item* nk_draw_button(struct nk_command_buffer *out, const struct nk_rect *bounds, nk_flags state, const struct nk_style_button *style); NK_LIB int nk_do_button(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, const struct nk_style_button *style, const struct nk_input *in, enum nk_button_behavior behavior, struct nk_rect *content); NK_LIB void nk_draw_button_text(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const char *txt, int len, nk_flags text_alignment, const struct nk_user_font *font); NK_LIB int nk_do_button_text(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *string, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB void nk_draw_button_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, enum nk_symbol_type type, const struct nk_user_font *font); NK_LIB int nk_do_button_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB void nk_draw_button_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const struct nk_image *img); NK_LIB int nk_do_button_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, enum nk_button_behavior b, const struct nk_style_button *style, const struct nk_input *in); NK_LIB void nk_draw_button_text_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *symbol, nk_flags state, const struct nk_style_button *style, const char *str, int len, enum nk_symbol_type type, const struct nk_user_font *font); NK_LIB int nk_do_button_text_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, const char *str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in); NK_LIB void nk_draw_button_text_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *image, nk_flags state, const struct nk_style_button *style, const char *str, int len, const struct nk_user_font *font, const struct nk_image *img); NK_LIB int nk_do_button_text_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, const char* str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in); /* toggle */ enum nk_toggle_type { NK_TOGGLE_CHECK, NK_TOGGLE_OPTION }; NK_LIB int nk_toggle_behavior(const struct nk_input *in, struct nk_rect select, nk_flags *state, int active); NK_LIB void nk_draw_checkbox(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font); NK_LIB void nk_draw_option(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font); NK_LIB int nk_do_toggle(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, int *active, const char *str, int len, enum nk_toggle_type type, const struct nk_style_toggle *style, const struct nk_input *in, const struct nk_user_font *font); /* progress */ NK_LIB nk_size nk_progress_behavior(nk_flags *state, struct nk_input *in, struct nk_rect r, struct nk_rect cursor, nk_size max, nk_size value, int modifiable); NK_LIB void nk_draw_progress(struct nk_command_buffer *out, nk_flags state, const struct nk_style_progress *style, const struct nk_rect *bounds, const struct nk_rect *scursor, nk_size value, nk_size max); NK_LIB nk_size nk_do_progress(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_size value, nk_size max, int modifiable, const struct nk_style_progress *style, struct nk_input *in); /* slider */ NK_LIB float nk_slider_behavior(nk_flags *state, struct nk_rect *logical_cursor, struct nk_rect *visual_cursor, struct nk_input *in, struct nk_rect bounds, float slider_min, float slider_max, float slider_value, float slider_step, float slider_steps); NK_LIB void nk_draw_slider(struct nk_command_buffer *out, nk_flags state, const struct nk_style_slider *style, const struct nk_rect *bounds, const struct nk_rect *visual_cursor, float min, float value, float max); NK_LIB float nk_do_slider(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, float min, float val, float max, float step, const struct nk_style_slider *style, struct nk_input *in, const struct nk_user_font *font); /* scrollbar */ NK_LIB float nk_scrollbar_behavior(nk_flags *state, struct nk_input *in, int has_scrolling, const struct nk_rect *scroll, const struct nk_rect *cursor, const struct nk_rect *empty0, const struct nk_rect *empty1, float scroll_offset, float target, float scroll_step, enum nk_orientation o); NK_LIB void nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state, const struct nk_style_scrollbar *style, const struct nk_rect *bounds, const struct nk_rect *scroll); NK_LIB float nk_do_scrollbarv(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font); NK_LIB float nk_do_scrollbarh(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font); /* selectable */ NK_LIB void nk_draw_selectable(struct nk_command_buffer *out, nk_flags state, const struct nk_style_selectable *style, int active, const struct nk_rect *bounds, const struct nk_rect *icon, const struct nk_image *img, enum nk_symbol_type sym, const char *string, int len, nk_flags align, const struct nk_user_font *font); NK_LIB int nk_do_selectable(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB int nk_do_selectable_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_image *img, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font); /* edit */ NK_LIB void nk_edit_draw_text(struct nk_command_buffer *out, const struct nk_style_edit *style, float pos_x, float pos_y, float x_offset, const char *text, int byte_len, float row_height, const struct nk_user_font *font, struct nk_color background, struct nk_color foreground, int is_selected); NK_LIB nk_flags nk_do_edit(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_flags flags, nk_plugin_filter filter, struct nk_text_edit *edit, const struct nk_style_edit *style, struct nk_input *in, const struct nk_user_font *font); /* color-picker */ NK_LIB int nk_color_picker_behavior(nk_flags *state, const struct nk_rect *bounds, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf *color, const struct nk_input *in); NK_LIB void nk_draw_color_picker(struct nk_command_buffer *o, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf col); NK_LIB int nk_do_color_picker(nk_flags *state, struct nk_command_buffer *out, struct nk_colorf *col, enum nk_color_format fmt, struct nk_rect bounds, struct nk_vec2 padding, const struct nk_input *in, const struct nk_user_font *font); /* property */ enum nk_property_status { NK_PROPERTY_DEFAULT, NK_PROPERTY_EDIT, NK_PROPERTY_DRAG }; enum nk_property_filter { NK_FILTER_INT, NK_FILTER_FLOAT }; enum nk_property_kind { NK_PROPERTY_INT, NK_PROPERTY_FLOAT, NK_PROPERTY_DOUBLE }; union nk_property { int i; float f; double d; }; struct nk_property_variant { enum nk_property_kind kind; union nk_property value; union nk_property min_value; union nk_property max_value; union nk_property step; }; NK_LIB struct nk_property_variant nk_property_variant_int(int value, int min_value, int max_value, int step); NK_LIB struct nk_property_variant nk_property_variant_float(float value, float min_value, float max_value, float step); NK_LIB struct nk_property_variant nk_property_variant_double(double value, double min_value, double max_value, double step); NK_LIB void nk_drag_behavior(nk_flags *state, const struct nk_input *in, struct nk_rect drag, struct nk_property_variant *variant, float inc_per_pixel); NK_LIB void nk_property_behavior(nk_flags *ws, const struct nk_input *in, struct nk_rect property, struct nk_rect label, struct nk_rect edit, struct nk_rect empty, int *state, struct nk_property_variant *variant, float inc_per_pixel); NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_style_property *style, const struct nk_rect *bounds, const struct nk_rect *label, nk_flags state, const char *name, int len, const struct nk_user_font *font); NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior); NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter); #endif /* =============================================================== * * MATH * * ===============================================================*/ /* Since nuklear is supposed to work on all systems providing floating point math without any dependencies I also had to implement my own math functions for sqrt, sin and cos. Since the actual highly accurate implementations for the standard library functions are quite complex and I do not need high precision for my use cases I use approximations. Sqrt ---- For square root nuklear uses the famous fast inverse square root: https://en.wikipedia.org/wiki/Fast_inverse_square_root with slightly tweaked magic constant. While on today's hardware it is probably not faster it is still fast and accurate enough for nuklear's use cases. IMPORTANT: this requires float format IEEE 754 Sine/Cosine ----------- All constants inside both function are generated Remez's minimax approximations for value range 0...2*PI. The reason why I decided to approximate exactly that range is that nuklear only needs sine and cosine to generate circles which only requires that exact range. In addition I used Remez instead of Taylor for additional precision: www.lolengine.net/blog/2011/12/21/better-function-approximations. The tool I used to generate constants for both sine and cosine (it can actually approximate a lot more functions) can be found here: www.lolengine.net/wiki/oss/lolremez */ NK_LIB float nk_inv_sqrt(float n) { float x2; const float threehalfs = 1.5f; union {nk_uint i; float f;} conv = {0}; conv.f = n; x2 = n * 0.5f; conv.i = 0x5f375A84 - (conv.i >> 1); conv.f = conv.f * (threehalfs - (x2 * conv.f * conv.f)); return conv.f; } NK_LIB float nk_sqrt(float x) { return x * nk_inv_sqrt(x); } NK_LIB float nk_sin(float x) { NK_STORAGE const float a0 = +1.91059300966915117e-31f; NK_STORAGE const float a1 = +1.00086760103908896f; NK_STORAGE const float a2 = -1.21276126894734565e-2f; NK_STORAGE const float a3 = -1.38078780785773762e-1f; NK_STORAGE const float a4 = -2.67353392911981221e-2f; NK_STORAGE const float a5 = +2.08026600266304389e-2f; NK_STORAGE const float a6 = -3.03996055049204407e-3f; NK_STORAGE const float a7 = +1.38235642404333740e-4f; return a0 + x*(a1 + x*(a2 + x*(a3 + x*(a4 + x*(a5 + x*(a6 + x*a7)))))); } NK_LIB float nk_cos(float x) { /* New implementation. Also generated using lolremez. */ /* Old version significantly deviated from expected results. */ NK_STORAGE const float a0 = 9.9995999154986614e-1f; NK_STORAGE const float a1 = 1.2548995793001028e-3f; NK_STORAGE const float a2 = -5.0648546280678015e-1f; NK_STORAGE const float a3 = 1.2942246466519995e-2f; NK_STORAGE const float a4 = 2.8668384702547972e-2f; NK_STORAGE const float a5 = 7.3726485210586547e-3f; NK_STORAGE const float a6 = -3.8510875386947414e-3f; NK_STORAGE const float a7 = 4.7196604604366623e-4f; NK_STORAGE const float a8 = -1.8776444013090451e-5f; return a0 + x*(a1 + x*(a2 + x*(a3 + x*(a4 + x*(a5 + x*(a6 + x*(a7 + x*a8))))))); } NK_LIB nk_uint nk_round_up_pow2(nk_uint v) { v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; return v; } NK_LIB double nk_pow(double x, int n) { /* check the sign of n */ double r = 1; int plus = n >= 0; n = (plus) ? n : -n; while (n > 0) { if ((n & 1) == 1) r *= x; n /= 2; x *= x; } return plus ? r : 1.0 / r; } NK_LIB int nk_ifloord(double x) { x = (double)((int)x - ((x < 0.0) ? 1 : 0)); return (int)x; } NK_LIB int nk_ifloorf(float x) { x = (float)((int)x - ((x < 0.0f) ? 1 : 0)); return (int)x; } NK_LIB int nk_iceilf(float x) { if (x >= 0) { int i = (int)x; return (x > i) ? i+1: i; } else { int t = (int)x; float r = x - (float)t; return (r > 0.0f) ? t+1: t; } } NK_LIB int nk_log10(double n) { int neg; int ret; int exp = 0; neg = (n < 0) ? 1 : 0; ret = (neg) ? (int)-n : (int)n; while ((ret / 10) > 0) { ret /= 10; exp++; } if (neg) exp = -exp; return exp; } NK_API struct nk_rect nk_get_null_rect(void) { return nk_null_rect; } NK_API struct nk_rect nk_rect(float x, float y, float w, float h) { struct nk_rect r; r.x = x; r.y = y; r.w = w; r.h = h; return r; } NK_API struct nk_rect nk_recti(int x, int y, int w, int h) { struct nk_rect r; r.x = (float)x; r.y = (float)y; r.w = (float)w; r.h = (float)h; return r; } NK_API struct nk_rect nk_recta(struct nk_vec2 pos, struct nk_vec2 size) { return nk_rect(pos.x, pos.y, size.x, size.y); } NK_API struct nk_rect nk_rectv(const float *r) { return nk_rect(r[0], r[1], r[2], r[3]); } NK_API struct nk_rect nk_rectiv(const int *r) { return nk_recti(r[0], r[1], r[2], r[3]); } NK_API struct nk_vec2 nk_rect_pos(struct nk_rect r) { struct nk_vec2 ret; ret.x = r.x; ret.y = r.y; return ret; } NK_API struct nk_vec2 nk_rect_size(struct nk_rect r) { struct nk_vec2 ret; ret.x = r.w; ret.y = r.h; return ret; } NK_LIB struct nk_rect nk_shrink_rect(struct nk_rect r, float amount) { struct nk_rect res; r.w = NK_MAX(r.w, 2 * amount); r.h = NK_MAX(r.h, 2 * amount); res.x = r.x + amount; res.y = r.y + amount; res.w = r.w - 2 * amount; res.h = r.h - 2 * amount; return res; } NK_LIB struct nk_rect nk_pad_rect(struct nk_rect r, struct nk_vec2 pad) { r.w = NK_MAX(r.w, 2 * pad.x); r.h = NK_MAX(r.h, 2 * pad.y); r.x += pad.x; r.y += pad.y; r.w -= 2 * pad.x; r.h -= 2 * pad.y; return r; } NK_API struct nk_vec2 nk_vec2(float x, float y) { struct nk_vec2 ret; ret.x = x; ret.y = y; return ret; } NK_API struct nk_vec2 nk_vec2i(int x, int y) { struct nk_vec2 ret; ret.x = (float)x; ret.y = (float)y; return ret; } NK_API struct nk_vec2 nk_vec2v(const float *v) { return nk_vec2(v[0], v[1]); } NK_API struct nk_vec2 nk_vec2iv(const int *v) { return nk_vec2i(v[0], v[1]); } NK_LIB void nk_unify(struct nk_rect *clip, const struct nk_rect *a, float x0, float y0, float x1, float y1) { NK_ASSERT(a); NK_ASSERT(clip); clip->x = NK_MAX(a->x, x0); clip->y = NK_MAX(a->y, y0); clip->w = NK_MIN(a->x + a->w, x1) - clip->x; clip->h = NK_MIN(a->y + a->h, y1) - clip->y; clip->w = NK_MAX(0, clip->w); clip->h = NK_MAX(0, clip->h); } NK_API void nk_triangle_from_direction(struct nk_vec2 *result, struct nk_rect r, float pad_x, float pad_y, enum nk_heading direction) { float w_half, h_half; NK_ASSERT(result); r.w = NK_MAX(2 * pad_x, r.w); r.h = NK_MAX(2 * pad_y, r.h); r.w = r.w - 2 * pad_x; r.h = r.h - 2 * pad_y; r.x = r.x + pad_x; r.y = r.y + pad_y; w_half = r.w / 2.0f; h_half = r.h / 2.0f; if (direction == NK_UP) { result[0] = nk_vec2(r.x + w_half, r.y); result[1] = nk_vec2(r.x + r.w, r.y + r.h); result[2] = nk_vec2(r.x, r.y + r.h); } else if (direction == NK_RIGHT) { result[0] = nk_vec2(r.x, r.y); result[1] = nk_vec2(r.x + r.w, r.y + h_half); result[2] = nk_vec2(r.x, r.y + r.h); } else if (direction == NK_DOWN) { result[0] = nk_vec2(r.x, r.y); result[1] = nk_vec2(r.x + r.w, r.y); result[2] = nk_vec2(r.x + w_half, r.y + r.h); } else { result[0] = nk_vec2(r.x, r.y + h_half); result[1] = nk_vec2(r.x + r.w, r.y); result[2] = nk_vec2(r.x + r.w, r.y + r.h); } } /* =============================================================== * * UTIL * * ===============================================================*/ NK_INTERN int nk_str_match_here(const char *regexp, const char *text); NK_INTERN int nk_str_match_star(int c, const char *regexp, const char *text); NK_LIB int nk_is_lower(int c) {return (c >= 'a' && c <= 'z') || (c >= 0xE0 && c <= 0xFF);} NK_LIB int nk_is_upper(int c){return (c >= 'A' && c <= 'Z') || (c >= 0xC0 && c <= 0xDF);} NK_LIB int nk_to_upper(int c) {return (c >= 'a' && c <= 'z') ? (c - ('a' - 'A')) : c;} NK_LIB int nk_to_lower(int c) {return (c >= 'A' && c <= 'Z') ? (c - ('a' + 'A')) : c;} NK_LIB void* nk_memcopy(void *dst0, const void *src0, nk_size length) { nk_ptr t; char *dst = (char*)dst0; const char *src = (const char*)src0; if (length == 0 || dst == src) goto done; #define nk_word int #define nk_wsize sizeof(nk_word) #define nk_wmask (nk_wsize-1) #define NK_TLOOP(s) if (t) NK_TLOOP1(s) #define NK_TLOOP1(s) do { s; } while (--t) if (dst < src) { t = (nk_ptr)src; /* only need low bits */ if ((t | (nk_ptr)dst) & nk_wmask) { if ((t ^ (nk_ptr)dst) & nk_wmask || length < nk_wsize) t = length; else t = nk_wsize - (t & nk_wmask); length -= t; NK_TLOOP1(*dst++ = *src++); } t = length / nk_wsize; NK_TLOOP(*(nk_word*)(void*)dst = *(const nk_word*)(const void*)src; src += nk_wsize; dst += nk_wsize); t = length & nk_wmask; NK_TLOOP(*dst++ = *src++); } else { src += length; dst += length; t = (nk_ptr)src; if ((t | (nk_ptr)dst) & nk_wmask) { if ((t ^ (nk_ptr)dst) & nk_wmask || length <= nk_wsize) t = length; else t &= nk_wmask; length -= t; NK_TLOOP1(*--dst = *--src); } t = length / nk_wsize; NK_TLOOP(src -= nk_wsize; dst -= nk_wsize; *(nk_word*)(void*)dst = *(const nk_word*)(const void*)src); t = length & nk_wmask; NK_TLOOP(*--dst = *--src); } #undef nk_word #undef nk_wsize #undef nk_wmask #undef NK_TLOOP #undef NK_TLOOP1 done: return (dst0); } NK_LIB void nk_memset(void *ptr, int c0, nk_size size) { #define nk_word unsigned #define nk_wsize sizeof(nk_word) #define nk_wmask (nk_wsize - 1) nk_byte *dst = (nk_byte*)ptr; unsigned c = 0; nk_size t = 0; if ((c = (nk_byte)c0) != 0) { c = (c << 8) | c; /* at least 16-bits */ if (sizeof(unsigned int) > 2) c = (c << 16) | c; /* at least 32-bits*/ } /* too small of a word count */ dst = (nk_byte*)ptr; if (size < 3 * nk_wsize) { while (size--) *dst++ = (nk_byte)c0; return; } /* align destination */ if ((t = NK_PTR_TO_UINT(dst) & nk_wmask) != 0) { t = nk_wsize -t; size -= t; do { *dst++ = (nk_byte)c0; } while (--t != 0); } /* fill word */ t = size / nk_wsize; do { *(nk_word*)((void*)dst) = c; dst += nk_wsize; } while (--t != 0); /* fill trailing bytes */ t = (size & nk_wmask); if (t != 0) { do { *dst++ = (nk_byte)c0; } while (--t != 0); } #undef nk_word #undef nk_wsize #undef nk_wmask } NK_LIB void nk_zero(void *ptr, nk_size size) { NK_ASSERT(ptr); NK_MEMSET(ptr, 0, size); } NK_API int nk_strlen(const char *str) { int siz = 0; NK_ASSERT(str); while (str && *str++ != '\0') siz++; return siz; } NK_API int nk_strtoi(const char *str, const char **endptr) { int neg = 1; const char *p = str; int value = 0; NK_ASSERT(str); if (!str) return 0; /* skip whitespace */ while (*p == ' ') p++; if (*p == '-') { neg = -1; p++; } while (*p && *p >= '0' && *p <= '9') { value = value * 10 + (int) (*p - '0'); p++; } if (endptr) *endptr = p; return neg*value; } NK_API double nk_strtod(const char *str, const char **endptr) { double m; double neg = 1.0; const char *p = str; double value = 0; double number = 0; NK_ASSERT(str); if (!str) return 0; /* skip whitespace */ while (*p == ' ') p++; if (*p == '-') { neg = -1.0; p++; } while (*p && *p != '.' && *p != 'e') { value = value * 10.0 + (double) (*p - '0'); p++; } if (*p == '.') { p++; for(m = 0.1; *p && *p != 'e'; p++ ) { value = value + (double) (*p - '0') * m; m *= 0.1; } } if (*p == 'e') { int i, pow, div; p++; if (*p == '-') { div = nk_true; p++; } else if (*p == '+') { div = nk_false; p++; } else div = nk_false; for (pow = 0; *p; p++) pow = pow * 10 + (int) (*p - '0'); for (m = 1.0, i = 0; i < pow; i++) m *= 10.0; if (div) value /= m; else value *= m; } number = value * neg; if (endptr) *endptr = p; return number; } NK_API float nk_strtof(const char *str, const char **endptr) { float float_value; double double_value; double_value = NK_STRTOD(str, endptr); float_value = (float)double_value; return float_value; } NK_API int nk_stricmp(const char *s1, const char *s2) { nk_int c1,c2,d; do { c1 = *s1++; c2 = *s2++; d = c1 - c2; while (d) { if (c1 <= 'Z' && c1 >= 'A') { d += ('a' - 'A'); if (!d) break; } if (c2 <= 'Z' && c2 >= 'A') { d -= ('a' - 'A'); if (!d) break; } return ((d >= 0) << 1) - 1; } } while (c1); return 0; } NK_API int nk_stricmpn(const char *s1, const char *s2, int n) { int c1,c2,d; NK_ASSERT(n >= 0); do { c1 = *s1++; c2 = *s2++; if (!n--) return 0; d = c1 - c2; while (d) { if (c1 <= 'Z' && c1 >= 'A') { d += ('a' - 'A'); if (!d) break; } if (c2 <= 'Z' && c2 >= 'A') { d -= ('a' - 'A'); if (!d) break; } return ((d >= 0) << 1) - 1; } } while (c1); return 0; } NK_INTERN int nk_str_match_here(const char *regexp, const char *text) { if (regexp[0] == '\0') return 1; if (regexp[1] == '*') return nk_str_match_star(regexp[0], regexp+2, text); if (regexp[0] == '$' && regexp[1] == '\0') return *text == '\0'; if (*text!='\0' && (regexp[0]=='.' || regexp[0]==*text)) return nk_str_match_here(regexp+1, text+1); return 0; } NK_INTERN int nk_str_match_star(int c, const char *regexp, const char *text) { do {/* a '* matches zero or more instances */ if (nk_str_match_here(regexp, text)) return 1; } while (*text != '\0' && (*text++ == c || c == '.')); return 0; } NK_API int nk_strfilter(const char *text, const char *regexp) { /* c matches any literal character c . matches any single character ^ matches the beginning of the input string $ matches the end of the input string * matches zero or more occurrences of the previous character*/ if (regexp[0] == '^') return nk_str_match_here(regexp+1, text); do { /* must look even if string is empty */ if (nk_str_match_here(regexp, text)) return 1; } while (*text++ != '\0'); return 0; } NK_API int nk_strmatch_fuzzy_text(const char *str, int str_len, const char *pattern, int *out_score) { /* Returns true if each character in pattern is found sequentially within str * if found then out_score is also set. Score value has no intrinsic meaning. * Range varies with pattern. Can only compare scores with same search pattern. */ /* bonus for adjacent matches */ #define NK_ADJACENCY_BONUS 5 /* bonus if match occurs after a separator */ #define NK_SEPARATOR_BONUS 10 /* bonus if match is uppercase and prev is lower */ #define NK_CAMEL_BONUS 10 /* penalty applied for every letter in str before the first match */ #define NK_LEADING_LETTER_PENALTY (-3) /* maximum penalty for leading letters */ #define NK_MAX_LEADING_LETTER_PENALTY (-9) /* penalty for every letter that doesn't matter */ #define NK_UNMATCHED_LETTER_PENALTY (-1) /* loop variables */ int score = 0; char const * pattern_iter = pattern; int str_iter = 0; int prev_matched = nk_false; int prev_lower = nk_false; /* true so if first letter match gets separator bonus*/ int prev_separator = nk_true; /* use "best" matched letter if multiple string letters match the pattern */ char const * best_letter = 0; int best_letter_score = 0; /* loop over strings */ NK_ASSERT(str); NK_ASSERT(pattern); if (!str || !str_len || !pattern) return 0; while (str_iter < str_len) { const char pattern_letter = *pattern_iter; const char str_letter = str[str_iter]; int next_match = *pattern_iter != '\0' && nk_to_lower(pattern_letter) == nk_to_lower(str_letter); int rematch = best_letter && nk_to_upper(*best_letter) == nk_to_upper(str_letter); int advanced = next_match && best_letter; int pattern_repeat = best_letter && *pattern_iter != '\0'; pattern_repeat = pattern_repeat && nk_to_lower(*best_letter) == nk_to_lower(pattern_letter); if (advanced || pattern_repeat) { score += best_letter_score; best_letter = 0; best_letter_score = 0; } if (next_match || rematch) { int new_score = 0; /* Apply penalty for each letter before the first pattern match */ if (pattern_iter == pattern) { int count = (int)(&str[str_iter] - str); int penalty = NK_LEADING_LETTER_PENALTY * count; if (penalty < NK_MAX_LEADING_LETTER_PENALTY) penalty = NK_MAX_LEADING_LETTER_PENALTY; score += penalty; } /* apply bonus for consecutive bonuses */ if (prev_matched) new_score += NK_ADJACENCY_BONUS; /* apply bonus for matches after a separator */ if (prev_separator) new_score += NK_SEPARATOR_BONUS; /* apply bonus across camel case boundaries */ if (prev_lower && nk_is_upper(str_letter)) new_score += NK_CAMEL_BONUS; /* update pattern iter IFF the next pattern letter was matched */ if (next_match) ++pattern_iter; /* update best letter in str which may be for a "next" letter or a rematch */ if (new_score >= best_letter_score) { /* apply penalty for now skipped letter */ if (best_letter != 0) score += NK_UNMATCHED_LETTER_PENALTY; best_letter = &str[str_iter]; best_letter_score = new_score; } prev_matched = nk_true; } else { score += NK_UNMATCHED_LETTER_PENALTY; prev_matched = nk_false; } /* separators should be more easily defined */ prev_lower = nk_is_lower(str_letter) != 0; prev_separator = str_letter == '_' || str_letter == ' '; ++str_iter; } /* apply score for last match */ if (best_letter) score += best_letter_score; /* did not match full pattern */ if (*pattern_iter != '\0') return nk_false; if (out_score) *out_score = score; return nk_true; } NK_API int nk_strmatch_fuzzy_string(char const *str, char const *pattern, int *out_score) { return nk_strmatch_fuzzy_text(str, nk_strlen(str), pattern, out_score); } NK_LIB int nk_string_float_limit(char *string, int prec) { int dot = 0; char *c = string; while (*c) { if (*c == '.') { dot = 1; c++; continue; } if (dot == (prec+1)) { *c = 0; break; } if (dot > 0) dot++; c++; } return (int)(c - string); } NK_INTERN void nk_strrev_ascii(char *s) { int len = nk_strlen(s); int end = len / 2; int i = 0; char t; for (; i < end; ++i) { t = s[i]; s[i] = s[len - 1 - i]; s[len -1 - i] = t; } } NK_LIB char* nk_itoa(char *s, long n) { long i = 0; if (n == 0) { s[i++] = '0'; s[i] = 0; return s; } if (n < 0) { s[i++] = '-'; n = -n; } while (n > 0) { s[i++] = (char)('0' + (n % 10)); n /= 10; } s[i] = 0; if (s[0] == '-') ++s; nk_strrev_ascii(s); return s; } NK_LIB char* nk_dtoa(char *s, double n) { int useExp = 0; int digit = 0, m = 0, m1 = 0; char *c = s; int neg = 0; NK_ASSERT(s); if (!s) return 0; if (n == 0.0) { s[0] = '0'; s[1] = '\0'; return s; } neg = (n < 0); if (neg) n = -n; /* calculate magnitude */ m = nk_log10(n); useExp = (m >= 14 || (neg && m >= 9) || m <= -9); if (neg) *(c++) = '-'; /* set up for scientific notation */ if (useExp) { if (m < 0) m -= 1; n = n / (double)nk_pow(10.0, m); m1 = m; m = 0; } if (m < 1.0) { m = 0; } /* convert the number */ while (n > NK_FLOAT_PRECISION || m >= 0) { double weight = nk_pow(10.0, m); if (weight > 0) { double t = (double)n / weight; digit = nk_ifloord(t); n -= ((double)digit * weight); *(c++) = (char)('0' + (char)digit); } if (m == 0 && n > 0) *(c++) = '.'; m--; } if (useExp) { /* convert the exponent */ int i, j; *(c++) = 'e'; if (m1 > 0) { *(c++) = '+'; } else { *(c++) = '-'; m1 = -m1; } m = 0; while (m1 > 0) { *(c++) = (char)('0' + (char)(m1 % 10)); m1 /= 10; m++; } c -= m; for (i = 0, j = m-1; i= buf_size) break; iter++; /* flag arguments */ while (*iter) { if (*iter == '-') flag |= NK_ARG_FLAG_LEFT; else if (*iter == '+') flag |= NK_ARG_FLAG_PLUS; else if (*iter == ' ') flag |= NK_ARG_FLAG_SPACE; else if (*iter == '#') flag |= NK_ARG_FLAG_NUM; else if (*iter == '0') flag |= NK_ARG_FLAG_ZERO; else break; iter++; } /* width argument */ width = NK_DEFAULT; if (*iter >= '1' && *iter <= '9') { const char *end; width = nk_strtoi(iter, &end); if (end == iter) width = -1; else iter = end; } else if (*iter == '*') { width = va_arg(args, int); iter++; } /* precision argument */ precision = NK_DEFAULT; if (*iter == '.') { iter++; if (*iter == '*') { precision = va_arg(args, int); iter++; } else { const char *end; precision = nk_strtoi(iter, &end); if (end == iter) precision = -1; else iter = end; } } /* length modifier */ if (*iter == 'h') { if (*(iter+1) == 'h') { arg_type = NK_ARG_TYPE_CHAR; iter++; } else arg_type = NK_ARG_TYPE_SHORT; iter++; } else if (*iter == 'l') { arg_type = NK_ARG_TYPE_LONG; iter++; } else arg_type = NK_ARG_TYPE_DEFAULT; /* specifier */ if (*iter == '%') { NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (len < buf_size) buf[len++] = '%'; } else if (*iter == 's') { /* string */ const char *str = va_arg(args, const char*); NK_ASSERT(str != buf && "buffer and argument are not allowed to overlap!"); NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (str == buf) return -1; while (str && *str && len < buf_size) buf[len++] = *str++; } else if (*iter == 'n') { /* current length callback */ signed int *n = va_arg(args, int*); NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (n) *n = len; } else if (*iter == 'c' || *iter == 'i' || *iter == 'd') { /* signed integer */ long value = 0; const char *num_iter; int num_len, num_print, padding; int cur_precision = NK_MAX(precision, 1); int cur_width = NK_MAX(width, 0); /* retrieve correct value type */ if (arg_type == NK_ARG_TYPE_CHAR) value = (signed char)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_SHORT) value = (signed short)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_LONG) value = va_arg(args, signed long); else if (*iter == 'c') value = (unsigned char)va_arg(args, int); else value = va_arg(args, signed int); /* convert number to string */ nk_itoa(number_buffer, value); num_len = nk_strlen(number_buffer); padding = NK_MAX(cur_width - NK_MAX(cur_precision, num_len), 0); if ((flag & NK_ARG_FLAG_PLUS) || (flag & NK_ARG_FLAG_SPACE)) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while (padding-- > 0 && (len < buf_size)) { if ((flag & NK_ARG_FLAG_ZERO) && (precision == NK_DEFAULT)) buf[len++] = '0'; else buf[len++] = ' '; } } /* copy string value representation into buffer */ if ((flag & NK_ARG_FLAG_PLUS) && value >= 0 && len < buf_size) buf[len++] = '+'; else if ((flag & NK_ARG_FLAG_SPACE) && value >= 0 && len < buf_size) buf[len++] = ' '; /* fill up to precision number of digits with '0' */ num_print = NK_MAX(cur_precision, num_len); while (precision && (num_print > num_len) && (len < buf_size)) { buf[len++] = '0'; num_print--; } /* copy string value representation into buffer */ num_iter = number_buffer; while (precision && *num_iter && len < buf_size) buf[len++] = *num_iter++; /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else if (*iter == 'o' || *iter == 'x' || *iter == 'X' || *iter == 'u') { /* unsigned integer */ unsigned long value = 0; int num_len = 0, num_print, padding = 0; int cur_precision = NK_MAX(precision, 1); int cur_width = NK_MAX(width, 0); unsigned int base = (*iter == 'o') ? 8: (*iter == 'u')? 10: 16; /* print oct/hex/dec value */ const char *upper_output_format = "0123456789ABCDEF"; const char *lower_output_format = "0123456789abcdef"; const char *output_format = (*iter == 'x') ? lower_output_format: upper_output_format; /* retrieve correct value type */ if (arg_type == NK_ARG_TYPE_CHAR) value = (unsigned char)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_SHORT) value = (unsigned short)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_LONG) value = va_arg(args, unsigned long); else value = va_arg(args, unsigned int); do { /* convert decimal number into hex/oct number */ int digit = output_format[value % base]; if (num_len < NK_MAX_NUMBER_BUFFER) number_buffer[num_len++] = (char)digit; value /= base; } while (value > 0); num_print = NK_MAX(cur_precision, num_len); padding = NK_MAX(cur_width - NK_MAX(cur_precision, num_len), 0); if (flag & NK_ARG_FLAG_NUM) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while ((padding-- > 0) && (len < buf_size)) { if ((flag & NK_ARG_FLAG_ZERO) && (precision == NK_DEFAULT)) buf[len++] = '0'; else buf[len++] = ' '; } } /* fill up to precision number of digits */ if (num_print && (flag & NK_ARG_FLAG_NUM)) { if ((*iter == 'o') && (len < buf_size)) { buf[len++] = '0'; } else if ((*iter == 'x') && ((len+1) < buf_size)) { buf[len++] = '0'; buf[len++] = 'x'; } else if ((*iter == 'X') && ((len+1) < buf_size)) { buf[len++] = '0'; buf[len++] = 'X'; } } while (precision && (num_print > num_len) && (len < buf_size)) { buf[len++] = '0'; num_print--; } /* reverse number direction */ while (num_len > 0) { if (precision && (len < buf_size)) buf[len++] = number_buffer[num_len-1]; num_len--; } /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else if (*iter == 'f') { /* floating point */ const char *num_iter; int cur_precision = (precision < 0) ? 6: precision; int prefix, cur_width = NK_MAX(width, 0); double value = va_arg(args, double); int num_len = 0, frac_len = 0, dot = 0; int padding = 0; NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_DTOA(number_buffer, value); num_len = nk_strlen(number_buffer); /* calculate padding */ num_iter = number_buffer; while (*num_iter && *num_iter != '.') num_iter++; prefix = (*num_iter == '.')?(int)(num_iter - number_buffer)+1:0; padding = NK_MAX(cur_width - (prefix + NK_MIN(cur_precision, num_len - prefix)) , 0); if ((flag & NK_ARG_FLAG_PLUS) || (flag & NK_ARG_FLAG_SPACE)) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while (padding-- > 0 && (len < buf_size)) { if (flag & NK_ARG_FLAG_ZERO) buf[len++] = '0'; else buf[len++] = ' '; } } /* copy string value representation into buffer */ num_iter = number_buffer; if ((flag & NK_ARG_FLAG_PLUS) && (value >= 0) && (len < buf_size)) buf[len++] = '+'; else if ((flag & NK_ARG_FLAG_SPACE) && (value >= 0) && (len < buf_size)) buf[len++] = ' '; while (*num_iter) { if (dot) frac_len++; if (len < buf_size) buf[len++] = *num_iter; if (*num_iter == '.') dot = 1; if (frac_len >= cur_precision) break; num_iter++; } /* fill number up to precision */ while (frac_len < cur_precision) { if (!dot && len < buf_size) { buf[len++] = '.'; dot = 1; } if (len < buf_size) buf[len++] = '0'; frac_len++; } /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else { /* Specifier not supported: g,G,e,E,p,z */ NK_ASSERT(0 && "specifier is not supported!"); return result; } } buf[(len >= buf_size)?(buf_size-1):len] = 0; result = (len >= buf_size)?-1:len; return result; } #endif NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args) { int result = -1; NK_ASSERT(buf); NK_ASSERT(buf_size); if (!buf || !buf_size || !fmt) return 0; #ifdef NK_INCLUDE_STANDARD_IO result = NK_VSNPRINTF(buf, (nk_size)buf_size, fmt, args); result = (result >= buf_size) ? -1: result; buf[buf_size-1] = 0; #else result = nk_vsnprintf(buf, buf_size, fmt, args); #endif return result; } #endif NK_API nk_hash nk_murmur_hash(const void * key, int len, nk_hash seed) { /* 32-Bit MurmurHash3: https://code.google.com/p/smhasher/wiki/MurmurHash3*/ #define NK_ROTL(x,r) ((x) << (r) | ((x) >> (32 - r))) nk_uint h1 = seed; nk_uint k1; const nk_byte *data = (const nk_byte*)key; const nk_byte *keyptr = data; nk_byte *k1ptr; const int bsize = sizeof(k1); const int nblocks = len/4; const nk_uint c1 = 0xcc9e2d51; const nk_uint c2 = 0x1b873593; const nk_byte *tail; int i; /* body */ if (!key) return 0; for (i = 0; i < nblocks; ++i, keyptr += bsize) { k1ptr = (nk_byte*)&k1; k1ptr[0] = keyptr[0]; k1ptr[1] = keyptr[1]; k1ptr[2] = keyptr[2]; k1ptr[3] = keyptr[3]; k1 *= c1; k1 = NK_ROTL(k1,15); k1 *= c2; h1 ^= k1; h1 = NK_ROTL(h1,13); h1 = h1*5+0xe6546b64; } /* tail */ tail = (const nk_byte*)(data + nblocks*4); k1 = 0; switch (len & 3) { case 3: k1 ^= (nk_uint)(tail[2] << 16); /* fallthrough */ case 2: k1 ^= (nk_uint)(tail[1] << 8u); /* fallthrough */ case 1: k1 ^= tail[0]; k1 *= c1; k1 = NK_ROTL(k1,15); k1 *= c2; h1 ^= k1; break; default: break; } /* finalization */ h1 ^= (nk_uint)len; /* fmix32 */ h1 ^= h1 >> 16; h1 *= 0x85ebca6b; h1 ^= h1 >> 13; h1 *= 0xc2b2ae35; h1 ^= h1 >> 16; #undef NK_ROTL return h1; } #ifdef NK_INCLUDE_STANDARD_IO NK_LIB char* nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc) { char *buf; FILE *fd; long ret; NK_ASSERT(path); NK_ASSERT(siz); NK_ASSERT(alloc); if (!path || !siz || !alloc) return 0; fd = fopen(path, "rb"); if (!fd) return 0; fseek(fd, 0, SEEK_END); ret = ftell(fd); if (ret < 0) { fclose(fd); return 0; } *siz = (nk_size)ret; fseek(fd, 0, SEEK_SET); buf = (char*)alloc->alloc(alloc->userdata,0, *siz); NK_ASSERT(buf); if (!buf) { fclose(fd); return 0; } *siz = (nk_size)fread(buf, 1,*siz, fd); fclose(fd); return buf; } #endif NK_LIB int nk_text_clamp(const struct nk_user_font *font, const char *text, int text_len, float space, int *glyphs, float *text_width, nk_rune *sep_list, int sep_count) { int i = 0; int glyph_len = 0; float last_width = 0; nk_rune unicode = 0; float width = 0; int len = 0; int g = 0; float s; int sep_len = 0; int sep_g = 0; float sep_width = 0; sep_count = NK_MAX(sep_count,0); glyph_len = nk_utf_decode(text, &unicode, text_len); while (glyph_len && (width < space) && (len < text_len)) { len += glyph_len; s = font->width(font->userdata, font->height, text, len); for (i = 0; i < sep_count; ++i) { if (unicode != sep_list[i]) continue; sep_width = last_width = width; sep_g = g+1; sep_len = len; break; } if (i == sep_count){ last_width = sep_width = width; sep_g = g+1; } width = s; glyph_len = nk_utf_decode(&text[len], &unicode, text_len - len); g++; } if (len >= text_len) { *glyphs = g; *text_width = last_width; return len; } else { *glyphs = sep_g; *text_width = sep_width; return (!sep_len) ? len: sep_len; } } NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *font, const char *begin, int byte_len, float row_height, const char **remaining, struct nk_vec2 *out_offset, int *glyphs, int op) { float line_height = row_height; struct nk_vec2 text_size = nk_vec2(0,0); float line_width = 0.0f; float glyph_width; int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; if (!begin || byte_len <= 0 || !font) return nk_vec2(0,row_height); glyph_len = nk_utf_decode(begin, &unicode, byte_len); if (!glyph_len) return text_size; glyph_width = font->width(font->userdata, font->height, begin, glyph_len); *glyphs = 0; while ((text_len < byte_len) && glyph_len) { if (unicode == '\n') { text_size.x = NK_MAX(text_size.x, line_width); text_size.y += line_height; line_width = 0; *glyphs+=1; if (op == NK_STOP_ON_NEW_LINE) break; text_len++; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); continue; } if (unicode == '\r') { text_len++; *glyphs+=1; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); continue; } *glyphs = *glyphs + 1; text_len += glyph_len; line_width += (float)glyph_width; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); glyph_width = font->width(font->userdata, font->height, begin+text_len, glyph_len); continue; } if (text_size.x < line_width) text_size.x = line_width; if (out_offset) *out_offset = nk_vec2(line_width, text_size.y + line_height); if (line_width > 0 || text_size.y == 0.0f) text_size.y += line_height; if (remaining) *remaining = begin+text_len; return text_size; } /* ============================================================== * * COLOR * * ===============================================================*/ NK_INTERN int nk_parse_hex(const char *p, int length) { int i = 0; int len = 0; while (len < length) { i <<= 4; if (p[len] >= 'a' && p[len] <= 'f') i += ((p[len] - 'a') + 10); else if (p[len] >= 'A' && p[len] <= 'F') i += ((p[len] - 'A') + 10); else i += (p[len] - '0'); len++; } return i; } NK_API struct nk_color nk_rgba(int r, int g, int b, int a) { struct nk_color ret; ret.r = (nk_byte)NK_CLAMP(0, r, 255); ret.g = (nk_byte)NK_CLAMP(0, g, 255); ret.b = (nk_byte)NK_CLAMP(0, b, 255); ret.a = (nk_byte)NK_CLAMP(0, a, 255); return ret; } NK_API struct nk_color nk_rgb_hex(const char *rgb) { struct nk_color col; const char *c = rgb; if (*c == '#') c++; col.r = (nk_byte)nk_parse_hex(c, 2); col.g = (nk_byte)nk_parse_hex(c+2, 2); col.b = (nk_byte)nk_parse_hex(c+4, 2); col.a = 255; return col; } NK_API struct nk_color nk_rgba_hex(const char *rgb) { struct nk_color col; const char *c = rgb; if (*c == '#') c++; col.r = (nk_byte)nk_parse_hex(c, 2); col.g = (nk_byte)nk_parse_hex(c+2, 2); col.b = (nk_byte)nk_parse_hex(c+4, 2); col.a = (nk_byte)nk_parse_hex(c+6, 2); return col; } NK_API void nk_color_hex_rgba(char *output, struct nk_color col) { #define NK_TO_HEX(i) ((i) <= 9 ? '0' + (i): 'A' - 10 + (i)) output[0] = (char)NK_TO_HEX((col.r & 0xF0) >> 4); output[1] = (char)NK_TO_HEX((col.r & 0x0F)); output[2] = (char)NK_TO_HEX((col.g & 0xF0) >> 4); output[3] = (char)NK_TO_HEX((col.g & 0x0F)); output[4] = (char)NK_TO_HEX((col.b & 0xF0) >> 4); output[5] = (char)NK_TO_HEX((col.b & 0x0F)); output[6] = (char)NK_TO_HEX((col.a & 0xF0) >> 4); output[7] = (char)NK_TO_HEX((col.a & 0x0F)); output[8] = '\0'; #undef NK_TO_HEX } NK_API void nk_color_hex_rgb(char *output, struct nk_color col) { #define NK_TO_HEX(i) ((i) <= 9 ? '0' + (i): 'A' - 10 + (i)) output[0] = (char)NK_TO_HEX((col.r & 0xF0) >> 4); output[1] = (char)NK_TO_HEX((col.r & 0x0F)); output[2] = (char)NK_TO_HEX((col.g & 0xF0) >> 4); output[3] = (char)NK_TO_HEX((col.g & 0x0F)); output[4] = (char)NK_TO_HEX((col.b & 0xF0) >> 4); output[5] = (char)NK_TO_HEX((col.b & 0x0F)); output[6] = '\0'; #undef NK_TO_HEX } NK_API struct nk_color nk_rgba_iv(const int *c) { return nk_rgba(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgba_bv(const nk_byte *c) { return nk_rgba(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgb(int r, int g, int b) { struct nk_color ret; ret.r = (nk_byte)NK_CLAMP(0, r, 255); ret.g = (nk_byte)NK_CLAMP(0, g, 255); ret.b = (nk_byte)NK_CLAMP(0, b, 255); ret.a = (nk_byte)255; return ret; } NK_API struct nk_color nk_rgb_iv(const int *c) { return nk_rgb(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgb_bv(const nk_byte* c) { return nk_rgb(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgba_u32(nk_uint in) { struct nk_color ret; ret.r = (in & 0xFF); ret.g = ((in >> 8) & 0xFF); ret.b = ((in >> 16) & 0xFF); ret.a = (nk_byte)((in >> 24) & 0xFF); return ret; } NK_API struct nk_color nk_rgba_f(float r, float g, float b, float a) { struct nk_color ret; ret.r = (nk_byte)(NK_SATURATE(r) * 255.0f); ret.g = (nk_byte)(NK_SATURATE(g) * 255.0f); ret.b = (nk_byte)(NK_SATURATE(b) * 255.0f); ret.a = (nk_byte)(NK_SATURATE(a) * 255.0f); return ret; } NK_API struct nk_color nk_rgba_fv(const float *c) { return nk_rgba_f(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgba_cf(struct nk_colorf c) { return nk_rgba_f(c.r, c.g, c.b, c.a); } NK_API struct nk_color nk_rgb_f(float r, float g, float b) { struct nk_color ret; ret.r = (nk_byte)(NK_SATURATE(r) * 255.0f); ret.g = (nk_byte)(NK_SATURATE(g) * 255.0f); ret.b = (nk_byte)(NK_SATURATE(b) * 255.0f); ret.a = 255; return ret; } NK_API struct nk_color nk_rgb_fv(const float *c) { return nk_rgb_f(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgb_cf(struct nk_colorf c) { return nk_rgb_f(c.r, c.g, c.b); } NK_API struct nk_color nk_hsv(int h, int s, int v) { return nk_hsva(h, s, v, 255); } NK_API struct nk_color nk_hsv_iv(const int *c) { return nk_hsv(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsv_bv(const nk_byte *c) { return nk_hsv(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsv_f(float h, float s, float v) { return nk_hsva_f(h, s, v, 1.0f); } NK_API struct nk_color nk_hsv_fv(const float *c) { return nk_hsv_f(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsva(int h, int s, int v, int a) { float hf = ((float)NK_CLAMP(0, h, 255)) / 255.0f; float sf = ((float)NK_CLAMP(0, s, 255)) / 255.0f; float vf = ((float)NK_CLAMP(0, v, 255)) / 255.0f; float af = ((float)NK_CLAMP(0, a, 255)) / 255.0f; return nk_hsva_f(hf, sf, vf, af); } NK_API struct nk_color nk_hsva_iv(const int *c) { return nk_hsva(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_hsva_bv(const nk_byte *c) { return nk_hsva(c[0], c[1], c[2], c[3]); } NK_API struct nk_colorf nk_hsva_colorf(float h, float s, float v, float a) { int i; float p, q, t, f; struct nk_colorf out = {0,0,0,0}; if (s <= 0.0f) { out.r = v; out.g = v; out.b = v; out.a = a; return out; } h = h / (60.0f/360.0f); i = (int)h; f = h - (float)i; p = v * (1.0f - s); q = v * (1.0f - (s * f)); t = v * (1.0f - s * (1.0f - f)); switch (i) { case 0: default: out.r = v; out.g = t; out.b = p; break; case 1: out.r = q; out.g = v; out.b = p; break; case 2: out.r = p; out.g = v; out.b = t; break; case 3: out.r = p; out.g = q; out.b = v; break; case 4: out.r = t; out.g = p; out.b = v; break; case 5: out.r = v; out.g = p; out.b = q; break;} out.a = a; return out; } NK_API struct nk_colorf nk_hsva_colorfv(float *c) { return nk_hsva_colorf(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_hsva_f(float h, float s, float v, float a) { struct nk_colorf c = nk_hsva_colorf(h, s, v, a); return nk_rgba_f(c.r, c.g, c.b, c.a); } NK_API struct nk_color nk_hsva_fv(const float *c) { return nk_hsva_f(c[0], c[1], c[2], c[3]); } NK_API nk_uint nk_color_u32(struct nk_color in) { nk_uint out = (nk_uint)in.r; out |= ((nk_uint)in.g << 8); out |= ((nk_uint)in.b << 16); out |= ((nk_uint)in.a << 24); return out; } NK_API void nk_color_f(float *r, float *g, float *b, float *a, struct nk_color in) { NK_STORAGE const float s = 1.0f/255.0f; *r = (float)in.r * s; *g = (float)in.g * s; *b = (float)in.b * s; *a = (float)in.a * s; } NK_API void nk_color_fv(float *c, struct nk_color in) { nk_color_f(&c[0], &c[1], &c[2], &c[3], in); } NK_API struct nk_colorf nk_color_cf(struct nk_color in) { struct nk_colorf o; nk_color_f(&o.r, &o.g, &o.b, &o.a, in); return o; } NK_API void nk_color_d(double *r, double *g, double *b, double *a, struct nk_color in) { NK_STORAGE const double s = 1.0/255.0; *r = (double)in.r * s; *g = (double)in.g * s; *b = (double)in.b * s; *a = (double)in.a * s; } NK_API void nk_color_dv(double *c, struct nk_color in) { nk_color_d(&c[0], &c[1], &c[2], &c[3], in); } NK_API void nk_color_hsv_f(float *out_h, float *out_s, float *out_v, struct nk_color in) { float a; nk_color_hsva_f(out_h, out_s, out_v, &a, in); } NK_API void nk_color_hsv_fv(float *out, struct nk_color in) { float a; nk_color_hsva_f(&out[0], &out[1], &out[2], &a, in); } NK_API void nk_colorf_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_colorf in) { float chroma; float K = 0.0f; if (in.g < in.b) { const float t = in.g; in.g = in.b; in.b = t; K = -1.f; } if (in.r < in.g) { const float t = in.r; in.r = in.g; in.g = t; K = -2.f/6.0f - K; } chroma = in.r - ((in.g < in.b) ? in.g: in.b); *out_h = NK_ABS(K + (in.g - in.b)/(6.0f * chroma + 1e-20f)); *out_s = chroma / (in.r + 1e-20f); *out_v = in.r; *out_a = in.a; } NK_API void nk_colorf_hsva_fv(float *hsva, struct nk_colorf in) { nk_colorf_hsva_f(&hsva[0], &hsva[1], &hsva[2], &hsva[3], in); } NK_API void nk_color_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_color in) { struct nk_colorf col; nk_color_f(&col.r,&col.g,&col.b,&col.a, in); nk_colorf_hsva_f(out_h, out_s, out_v, out_a, col); } NK_API void nk_color_hsva_fv(float *out, struct nk_color in) { nk_color_hsva_f(&out[0], &out[1], &out[2], &out[3], in); } NK_API void nk_color_hsva_i(int *out_h, int *out_s, int *out_v, int *out_a, struct nk_color in) { float h,s,v,a; nk_color_hsva_f(&h, &s, &v, &a, in); *out_h = (nk_byte)(h * 255.0f); *out_s = (nk_byte)(s * 255.0f); *out_v = (nk_byte)(v * 255.0f); *out_a = (nk_byte)(a * 255.0f); } NK_API void nk_color_hsva_iv(int *out, struct nk_color in) { nk_color_hsva_i(&out[0], &out[1], &out[2], &out[3], in); } NK_API void nk_color_hsva_bv(nk_byte *out, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); out[0] = (nk_byte)tmp[0]; out[1] = (nk_byte)tmp[1]; out[2] = (nk_byte)tmp[2]; out[3] = (nk_byte)tmp[3]; } NK_API void nk_color_hsva_b(nk_byte *h, nk_byte *s, nk_byte *v, nk_byte *a, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); *h = (nk_byte)tmp[0]; *s = (nk_byte)tmp[1]; *v = (nk_byte)tmp[2]; *a = (nk_byte)tmp[3]; } NK_API void nk_color_hsv_i(int *out_h, int *out_s, int *out_v, struct nk_color in) { int a; nk_color_hsva_i(out_h, out_s, out_v, &a, in); } NK_API void nk_color_hsv_b(nk_byte *out_h, nk_byte *out_s, nk_byte *out_v, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); *out_h = (nk_byte)tmp[0]; *out_s = (nk_byte)tmp[1]; *out_v = (nk_byte)tmp[2]; } NK_API void nk_color_hsv_iv(int *out, struct nk_color in) { nk_color_hsv_i(&out[0], &out[1], &out[2], in); } NK_API void nk_color_hsv_bv(nk_byte *out, struct nk_color in) { int tmp[4]; nk_color_hsv_i(&tmp[0], &tmp[1], &tmp[2], in); out[0] = (nk_byte)tmp[0]; out[1] = (nk_byte)tmp[1]; out[2] = (nk_byte)tmp[2]; } /* =============================================================== * * UTF-8 * * ===============================================================*/ NK_GLOBAL const nk_byte nk_utfbyte[NK_UTF_SIZE+1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; NK_GLOBAL const nk_byte nk_utfmask[NK_UTF_SIZE+1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; NK_GLOBAL const nk_uint nk_utfmin[NK_UTF_SIZE+1] = {0, 0, 0x80, 0x800, 0x10000}; NK_GLOBAL const nk_uint nk_utfmax[NK_UTF_SIZE+1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; NK_INTERN int nk_utf_validate(nk_rune *u, int i) { NK_ASSERT(u); if (!u) return 0; if (!NK_BETWEEN(*u, nk_utfmin[i], nk_utfmax[i]) || NK_BETWEEN(*u, 0xD800, 0xDFFF)) *u = NK_UTF_INVALID; for (i = 1; *u > nk_utfmax[i]; ++i); return i; } NK_INTERN nk_rune nk_utf_decode_byte(char c, int *i) { NK_ASSERT(i); if (!i) return 0; for(*i = 0; *i < (int)NK_LEN(nk_utfmask); ++(*i)) { if (((nk_byte)c & nk_utfmask[*i]) == nk_utfbyte[*i]) return (nk_byte)(c & ~nk_utfmask[*i]); } return 0; } NK_API int nk_utf_decode(const char *c, nk_rune *u, int clen) { int i, j, len, type=0; nk_rune udecoded; NK_ASSERT(c); NK_ASSERT(u); if (!c || !u) return 0; if (!clen) return 0; *u = NK_UTF_INVALID; udecoded = nk_utf_decode_byte(c[0], &len); if (!NK_BETWEEN(len, 1, NK_UTF_SIZE)) return 1; for (i = 1, j = 1; i < clen && j < len; ++i, ++j) { udecoded = (udecoded << 6) | nk_utf_decode_byte(c[i], &type); if (type != 0) return j; } if (j < len) return 0; *u = udecoded; nk_utf_validate(u, len); return len; } NK_INTERN char nk_utf_encode_byte(nk_rune u, int i) { return (char)((nk_utfbyte[i]) | ((nk_byte)u & ~nk_utfmask[i])); } NK_API int nk_utf_encode(nk_rune u, char *c, int clen) { int len, i; len = nk_utf_validate(&u, 0); if (clen < len || !len || len > NK_UTF_SIZE) return 0; for (i = len - 1; i != 0; --i) { c[i] = nk_utf_encode_byte(u, 0); u >>= 6; } c[0] = nk_utf_encode_byte(u, len); return len; } NK_API int nk_utf_len(const char *str, int len) { const char *text; int glyphs = 0; int text_len; int glyph_len; int src_len = 0; nk_rune unicode; NK_ASSERT(str); if (!str || !len) return 0; text = str; text_len = len; glyph_len = nk_utf_decode(text, &unicode, text_len); while (glyph_len && src_len < len) { glyphs++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, &unicode, text_len - src_len); } return glyphs; } NK_API const char* nk_utf_at(const char *buffer, int length, int index, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; const char *text; int text_len; NK_ASSERT(buffer); NK_ASSERT(unicode); NK_ASSERT(len); if (!buffer || !unicode || !len) return 0; if (index < 0) { *unicode = NK_UTF_INVALID; *len = 0; return 0; } text = buffer; text_len = length; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == index) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != index) return 0; return buffer + src_len; } /* ============================================================== * * BUFFER * * ===============================================================*/ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_LIB void* nk_malloc(nk_handle unused, void *old,nk_size size) { NK_UNUSED(unused); NK_UNUSED(old); return malloc(size); } NK_LIB void nk_mfree(nk_handle unused, void *ptr) { NK_UNUSED(unused); free(ptr); } NK_API void nk_buffer_init_default(struct nk_buffer *buffer) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; nk_buffer_init(buffer, &alloc, NK_BUFFER_DEFAULT_INITIAL_SIZE); } #endif NK_API void nk_buffer_init(struct nk_buffer *b, const struct nk_allocator *a, nk_size initial_size) { NK_ASSERT(b); NK_ASSERT(a); NK_ASSERT(initial_size); if (!b || !a || !initial_size) return; nk_zero(b, sizeof(*b)); b->type = NK_BUFFER_DYNAMIC; b->memory.ptr = a->alloc(a->userdata,0, initial_size); b->memory.size = initial_size; b->size = initial_size; b->grow_factor = 2.0f; b->pool = *a; } NK_API void nk_buffer_init_fixed(struct nk_buffer *b, void *m, nk_size size) { NK_ASSERT(b); NK_ASSERT(m); NK_ASSERT(size); if (!b || !m || !size) return; nk_zero(b, sizeof(*b)); b->type = NK_BUFFER_FIXED; b->memory.ptr = m; b->memory.size = size; b->size = size; } NK_LIB void* nk_buffer_align(void *unaligned, nk_size align, nk_size *alignment, enum nk_buffer_allocation_type type) { void *memory = 0; switch (type) { default: case NK_BUFFER_MAX: case NK_BUFFER_FRONT: if (align) { memory = NK_ALIGN_PTR(unaligned, align); *alignment = (nk_size)((nk_byte*)memory - (nk_byte*)unaligned); } else { memory = unaligned; *alignment = 0; } break; case NK_BUFFER_BACK: if (align) { memory = NK_ALIGN_PTR_BACK(unaligned, align); *alignment = (nk_size)((nk_byte*)unaligned - (nk_byte*)memory); } else { memory = unaligned; *alignment = 0; } break; } return memory; } NK_LIB void* nk_buffer_realloc(struct nk_buffer *b, nk_size capacity, nk_size *size) { void *temp; nk_size buffer_size; NK_ASSERT(b); NK_ASSERT(size); if (!b || !size || !b->pool.alloc || !b->pool.free) return 0; buffer_size = b->memory.size; temp = b->pool.alloc(b->pool.userdata, b->memory.ptr, capacity); NK_ASSERT(temp); if (!temp) return 0; *size = capacity; if (temp != b->memory.ptr) { NK_MEMCPY(temp, b->memory.ptr, buffer_size); b->pool.free(b->pool.userdata, b->memory.ptr); } if (b->size == buffer_size) { /* no back buffer so just set correct size */ b->size = capacity; return temp; } else { /* copy back buffer to the end of the new buffer */ void *dst, *src; nk_size back_size; back_size = buffer_size - b->size; dst = nk_ptr_add(void, temp, capacity - back_size); src = nk_ptr_add(void, temp, b->size); NK_MEMCPY(dst, src, back_size); b->size = capacity - back_size; } return temp; } NK_LIB void* nk_buffer_alloc(struct nk_buffer *b, enum nk_buffer_allocation_type type, nk_size size, nk_size align) { int full; nk_size alignment; void *unaligned; void *memory; NK_ASSERT(b); NK_ASSERT(size); if (!b || !size) return 0; b->needed += size; /* calculate total size with needed alignment + size */ if (type == NK_BUFFER_FRONT) unaligned = nk_ptr_add(void, b->memory.ptr, b->allocated); else unaligned = nk_ptr_add(void, b->memory.ptr, b->size - size); memory = nk_buffer_align(unaligned, align, &alignment, type); /* check if buffer has enough memory*/ if (type == NK_BUFFER_FRONT) full = ((b->allocated + size + alignment) > b->size); else full = ((b->size - NK_MIN(b->size,(size + alignment))) <= b->allocated); if (full) { nk_size capacity; if (b->type != NK_BUFFER_DYNAMIC) return 0; NK_ASSERT(b->pool.alloc && b->pool.free); if (b->type != NK_BUFFER_DYNAMIC || !b->pool.alloc || !b->pool.free) return 0; /* buffer is full so allocate bigger buffer if dynamic */ capacity = (nk_size)((float)b->memory.size * b->grow_factor); capacity = NK_MAX(capacity, nk_round_up_pow2((nk_uint)(b->allocated + size))); b->memory.ptr = nk_buffer_realloc(b, capacity, &b->memory.size); if (!b->memory.ptr) return 0; /* align newly allocated pointer */ if (type == NK_BUFFER_FRONT) unaligned = nk_ptr_add(void, b->memory.ptr, b->allocated); else unaligned = nk_ptr_add(void, b->memory.ptr, b->size - size); memory = nk_buffer_align(unaligned, align, &alignment, type); } if (type == NK_BUFFER_FRONT) b->allocated += size + alignment; else b->size -= (size + alignment); b->needed += alignment; b->calls++; return memory; } NK_API void nk_buffer_push(struct nk_buffer *b, enum nk_buffer_allocation_type type, const void *memory, nk_size size, nk_size align) { void *mem = nk_buffer_alloc(b, type, size, align); if (!mem) return; NK_MEMCPY(mem, memory, size); } NK_API void nk_buffer_mark(struct nk_buffer *buffer, enum nk_buffer_allocation_type type) { NK_ASSERT(buffer); if (!buffer) return; buffer->marker[type].active = nk_true; if (type == NK_BUFFER_BACK) buffer->marker[type].offset = buffer->size; else buffer->marker[type].offset = buffer->allocated; } NK_API void nk_buffer_reset(struct nk_buffer *buffer, enum nk_buffer_allocation_type type) { NK_ASSERT(buffer); if (!buffer) return; if (type == NK_BUFFER_BACK) { /* reset back buffer either back to marker or empty */ buffer->needed -= (buffer->memory.size - buffer->marker[type].offset); if (buffer->marker[type].active) buffer->size = buffer->marker[type].offset; else buffer->size = buffer->memory.size; buffer->marker[type].active = nk_false; } else { /* reset front buffer either back to back marker or empty */ buffer->needed -= (buffer->allocated - buffer->marker[type].offset); if (buffer->marker[type].active) buffer->allocated = buffer->marker[type].offset; else buffer->allocated = 0; buffer->marker[type].active = nk_false; } } NK_API void nk_buffer_clear(struct nk_buffer *b) { NK_ASSERT(b); if (!b) return; b->allocated = 0; b->size = b->memory.size; b->calls = 0; b->needed = 0; } NK_API void nk_buffer_free(struct nk_buffer *b) { NK_ASSERT(b); if (!b || !b->memory.ptr) return; if (b->type == NK_BUFFER_FIXED) return; if (!b->pool.free) return; NK_ASSERT(b->pool.free); b->pool.free(b->pool.userdata, b->memory.ptr); } NK_API void nk_buffer_info(struct nk_memory_status *s, struct nk_buffer *b) { NK_ASSERT(b); NK_ASSERT(s); if (!s || !b) return; s->allocated = b->allocated; s->size = b->memory.size; s->needed = b->needed; s->memory = b->memory.ptr; s->calls = b->calls; } NK_API void* nk_buffer_memory(struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.ptr; } NK_API const void* nk_buffer_memory_const(const struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.ptr; } NK_API nk_size nk_buffer_total(struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.size; } /* =============================================================== * * STRING * * ===============================================================*/ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_str_init_default(struct nk_str *str) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; nk_buffer_init(&str->buffer, &alloc, 32); str->len = 0; } #endif NK_API void nk_str_init(struct nk_str *str, const struct nk_allocator *alloc, nk_size size) { nk_buffer_init(&str->buffer, alloc, size); str->len = 0; } NK_API void nk_str_init_fixed(struct nk_str *str, void *memory, nk_size size) { nk_buffer_init_fixed(&str->buffer, memory, size); str->len = 0; } NK_API int nk_str_append_text_char(struct nk_str *s, const char *str, int len) { char *mem; NK_ASSERT(s); NK_ASSERT(str); if (!s || !str || !len) return 0; mem = (char*)nk_buffer_alloc(&s->buffer, NK_BUFFER_FRONT, (nk_size)len * sizeof(char), 0); if (!mem) return 0; NK_MEMCPY(mem, str, (nk_size)len * sizeof(char)); s->len += nk_utf_len(str, len); return len; } NK_API int nk_str_append_str_char(struct nk_str *s, const char *str) { return nk_str_append_text_char(s, str, nk_strlen(str)); } NK_API int nk_str_append_text_utf8(struct nk_str *str, const char *text, int len) { int i = 0; int byte_len = 0; nk_rune unicode; if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) byte_len += nk_utf_decode(text+byte_len, &unicode, 4); nk_str_append_text_char(str, text, byte_len); return len; } NK_API int nk_str_append_str_utf8(struct nk_str *str, const char *text) { int runes = 0; int byte_len = 0; int num_runes = 0; int glyph_len = 0; nk_rune unicode; if (!str || !text) return 0; glyph_len = byte_len = nk_utf_decode(text+byte_len, &unicode, 4); while (unicode != '\0' && glyph_len) { glyph_len = nk_utf_decode(text+byte_len, &unicode, 4); byte_len += glyph_len; num_runes++; } nk_str_append_text_char(str, text, byte_len); return runes; } NK_API int nk_str_append_text_runes(struct nk_str *str, const nk_rune *text, int len) { int i = 0; int byte_len = 0; nk_glyph glyph; NK_ASSERT(str); if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) { byte_len = nk_utf_encode(text[i], glyph, NK_UTF_SIZE); if (!byte_len) break; nk_str_append_text_char(str, glyph, byte_len); } return len; } NK_API int nk_str_append_str_runes(struct nk_str *str, const nk_rune *runes) { int i = 0; nk_glyph glyph; int byte_len; NK_ASSERT(str); if (!str || !runes) return 0; while (runes[i] != '\0') { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); nk_str_append_text_char(str, glyph, byte_len); i++; } return i; } NK_API int nk_str_insert_at_char(struct nk_str *s, int pos, const char *str, int len) { int i; void *mem; char *src; char *dst; int copylen; NK_ASSERT(s); NK_ASSERT(str); NK_ASSERT(len >= 0); if (!s || !str || !len || (nk_size)pos > s->buffer.allocated) return 0; if ((s->buffer.allocated + (nk_size)len >= s->buffer.memory.size) && (s->buffer.type == NK_BUFFER_FIXED)) return 0; copylen = (int)s->buffer.allocated - pos; if (!copylen) { nk_str_append_text_char(s, str, len); return 1; } mem = nk_buffer_alloc(&s->buffer, NK_BUFFER_FRONT, (nk_size)len * sizeof(char), 0); if (!mem) return 0; /* memmove */ NK_ASSERT(((int)pos + (int)len + ((int)copylen - 1)) >= 0); NK_ASSERT(((int)pos + ((int)copylen - 1)) >= 0); dst = nk_ptr_add(char, s->buffer.memory.ptr, pos + len + (copylen - 1)); src = nk_ptr_add(char, s->buffer.memory.ptr, pos + (copylen-1)); for (i = 0; i < copylen; ++i) *dst-- = *src--; mem = nk_ptr_add(void, s->buffer.memory.ptr, pos); NK_MEMCPY(mem, str, (nk_size)len * sizeof(char)); s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); return 1; } NK_API int nk_str_insert_at_rune(struct nk_str *str, int pos, const char *cstr, int len) { int glyph_len; nk_rune unicode; const char *begin; const char *buffer; NK_ASSERT(str); NK_ASSERT(cstr); NK_ASSERT(len); if (!str || !cstr || !len) return 0; begin = nk_str_at_rune(str, pos, &unicode, &glyph_len); if (!str->len) return nk_str_append_text_char(str, cstr, len); buffer = nk_str_get_const(str); if (!begin) return 0; return nk_str_insert_at_char(str, (int)(begin - buffer), cstr, len); } NK_API int nk_str_insert_text_char(struct nk_str *str, int pos, const char *text, int len) { return nk_str_insert_text_utf8(str, pos, text, len); } NK_API int nk_str_insert_str_char(struct nk_str *str, int pos, const char *text) { return nk_str_insert_text_utf8(str, pos, text, nk_strlen(text)); } NK_API int nk_str_insert_text_utf8(struct nk_str *str, int pos, const char *text, int len) { int i = 0; int byte_len = 0; nk_rune unicode; NK_ASSERT(str); NK_ASSERT(text); if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) byte_len += nk_utf_decode(text+byte_len, &unicode, 4); nk_str_insert_at_rune(str, pos, text, byte_len); return len; } NK_API int nk_str_insert_str_utf8(struct nk_str *str, int pos, const char *text) { int runes = 0; int byte_len = 0; int num_runes = 0; int glyph_len = 0; nk_rune unicode; if (!str || !text) return 0; glyph_len = byte_len = nk_utf_decode(text+byte_len, &unicode, 4); while (unicode != '\0' && glyph_len) { glyph_len = nk_utf_decode(text+byte_len, &unicode, 4); byte_len += glyph_len; num_runes++; } nk_str_insert_at_rune(str, pos, text, byte_len); return runes; } NK_API int nk_str_insert_text_runes(struct nk_str *str, int pos, const nk_rune *runes, int len) { int i = 0; int byte_len = 0; nk_glyph glyph; NK_ASSERT(str); if (!str || !runes || !len) return 0; for (i = 0; i < len; ++i) { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); if (!byte_len) break; nk_str_insert_at_rune(str, pos+i, glyph, byte_len); } return len; } NK_API int nk_str_insert_str_runes(struct nk_str *str, int pos, const nk_rune *runes) { int i = 0; nk_glyph glyph; int byte_len; NK_ASSERT(str); if (!str || !runes) return 0; while (runes[i] != '\0') { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); nk_str_insert_at_rune(str, pos+i, glyph, byte_len); i++; } return i; } NK_API void nk_str_remove_chars(struct nk_str *s, int len) { NK_ASSERT(s); NK_ASSERT(len >= 0); if (!s || len < 0 || (nk_size)len > s->buffer.allocated) return; NK_ASSERT(((int)s->buffer.allocated - (int)len) >= 0); s->buffer.allocated -= (nk_size)len; s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); } NK_API void nk_str_remove_runes(struct nk_str *str, int len) { int index; const char *begin; const char *end; nk_rune unicode; NK_ASSERT(str); NK_ASSERT(len >= 0); if (!str || len < 0) return; if (len >= str->len) { str->len = 0; return; } index = str->len - len; begin = nk_str_at_rune(str, index, &unicode, &len); end = (const char*)str->buffer.memory.ptr + str->buffer.allocated; nk_str_remove_chars(str, (int)(end-begin)+1); } NK_API void nk_str_delete_chars(struct nk_str *s, int pos, int len) { NK_ASSERT(s); if (!s || !len || (nk_size)pos > s->buffer.allocated || (nk_size)(pos + len) > s->buffer.allocated) return; if ((nk_size)(pos + len) < s->buffer.allocated) { /* memmove */ char *dst = nk_ptr_add(char, s->buffer.memory.ptr, pos); char *src = nk_ptr_add(char, s->buffer.memory.ptr, pos + len); NK_MEMCPY(dst, src, s->buffer.allocated - (nk_size)(pos + len)); NK_ASSERT(((int)s->buffer.allocated - (int)len) >= 0); s->buffer.allocated -= (nk_size)len; } else nk_str_remove_chars(s, len); s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); } NK_API void nk_str_delete_runes(struct nk_str *s, int pos, int len) { char *temp; nk_rune unicode; char *begin; char *end; int unused; NK_ASSERT(s); NK_ASSERT(s->len >= pos + len); if (s->len < pos + len) len = NK_CLAMP(0, (s->len - pos), s->len); if (!len) return; temp = (char *)s->buffer.memory.ptr; begin = nk_str_at_rune(s, pos, &unicode, &unused); if (!begin) return; s->buffer.memory.ptr = begin; end = nk_str_at_rune(s, len, &unicode, &unused); s->buffer.memory.ptr = temp; if (!end) return; nk_str_delete_chars(s, (int)(begin - temp), (int)(end - begin)); } NK_API char* nk_str_at_char(struct nk_str *s, int pos) { NK_ASSERT(s); if (!s || pos > (int)s->buffer.allocated) return 0; return nk_ptr_add(char, s->buffer.memory.ptr, pos); } NK_API char* nk_str_at_rune(struct nk_str *str, int pos, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; char *text; int text_len; NK_ASSERT(str); NK_ASSERT(unicode); NK_ASSERT(len); if (!str || !unicode || !len) return 0; if (pos < 0) { *unicode = 0; *len = 0; return 0; } text = (char*)str->buffer.memory.ptr; text_len = (int)str->buffer.allocated; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == pos) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != pos) return 0; return text + src_len; } NK_API const char* nk_str_at_char_const(const struct nk_str *s, int pos) { NK_ASSERT(s); if (!s || pos > (int)s->buffer.allocated) return 0; return nk_ptr_add(char, s->buffer.memory.ptr, pos); } NK_API const char* nk_str_at_const(const struct nk_str *str, int pos, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; char *text; int text_len; NK_ASSERT(str); NK_ASSERT(unicode); NK_ASSERT(len); if (!str || !unicode || !len) return 0; if (pos < 0) { *unicode = 0; *len = 0; return 0; } text = (char*)str->buffer.memory.ptr; text_len = (int)str->buffer.allocated; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == pos) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != pos) return 0; return text + src_len; } NK_API nk_rune nk_str_rune_at(const struct nk_str *str, int pos) { int len; nk_rune unicode = 0; nk_str_at_const(str, pos, &unicode, &len); return unicode; } NK_API char* nk_str_get(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (char*)s->buffer.memory.ptr; } NK_API const char* nk_str_get_const(const struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (const char*)s->buffer.memory.ptr; } NK_API int nk_str_len(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return s->len; } NK_API int nk_str_len_char(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (int)s->buffer.allocated; } NK_API void nk_str_clear(struct nk_str *str) { NK_ASSERT(str); nk_buffer_clear(&str->buffer); str->len = 0; } NK_API void nk_str_free(struct nk_str *str) { NK_ASSERT(str); nk_buffer_free(&str->buffer); str->len = 0; } /* ============================================================== * * DRAW * * ===============================================================*/ NK_LIB void nk_command_buffer_init(struct nk_command_buffer *cb, struct nk_buffer *b, enum nk_command_clipping clip) { NK_ASSERT(cb); NK_ASSERT(b); if (!cb || !b) return; cb->base = b; cb->use_clipping = (int)clip; cb->begin = b->allocated; cb->end = b->allocated; cb->last = b->allocated; } NK_LIB void nk_command_buffer_reset(struct nk_command_buffer *b) { NK_ASSERT(b); if (!b) return; b->begin = 0; b->end = 0; b->last = 0; b->clip = nk_null_rect; #ifdef NK_INCLUDE_COMMAND_USERDATA b->userdata.ptr = 0; #endif } NK_LIB void* nk_command_buffer_push(struct nk_command_buffer* b, enum nk_command_type t, nk_size size) { NK_STORAGE const nk_size align = NK_ALIGNOF(struct nk_command); struct nk_command *cmd; nk_size alignment; void *unaligned; void *memory; NK_ASSERT(b); NK_ASSERT(b->base); if (!b) return 0; cmd = (struct nk_command*)nk_buffer_alloc(b->base,NK_BUFFER_FRONT,size,align); if (!cmd) return 0; /* make sure the offset to the next command is aligned */ b->last = (nk_size)((nk_byte*)cmd - (nk_byte*)b->base->memory.ptr); unaligned = (nk_byte*)cmd + size; memory = NK_ALIGN_PTR(unaligned, align); alignment = (nk_size)((nk_byte*)memory - (nk_byte*)unaligned); #ifdef NK_ZERO_COMMAND_MEMORY NK_MEMSET(cmd, 0, size + alignment); #endif cmd->type = t; cmd->next = b->base->allocated + alignment; #ifdef NK_INCLUDE_COMMAND_USERDATA cmd->userdata = b->userdata; #endif b->end = cmd->next; return cmd; } NK_API void nk_push_scissor(struct nk_command_buffer *b, struct nk_rect r) { struct nk_command_scissor *cmd; NK_ASSERT(b); if (!b) return; b->clip.x = r.x; b->clip.y = r.y; b->clip.w = r.w; b->clip.h = r.h; cmd = (struct nk_command_scissor*) nk_command_buffer_push(b, NK_COMMAND_SCISSOR, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); } NK_API void nk_stroke_line(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float line_thickness, struct nk_color c) { struct nk_command_line *cmd; NK_ASSERT(b); if (!b || line_thickness <= 0) return; cmd = (struct nk_command_line*) nk_command_buffer_push(b, NK_COMMAND_LINE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->begin.x = (short)x0; cmd->begin.y = (short)y0; cmd->end.x = (short)x1; cmd->end.y = (short)y1; cmd->color = c; } NK_API void nk_stroke_curve(struct nk_command_buffer *b, float ax, float ay, float ctrl0x, float ctrl0y, float ctrl1x, float ctrl1y, float bx, float by, float line_thickness, struct nk_color col) { struct nk_command_curve *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; cmd = (struct nk_command_curve*) nk_command_buffer_push(b, NK_COMMAND_CURVE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->begin.x = (short)ax; cmd->begin.y = (short)ay; cmd->ctrl[0].x = (short)ctrl0x; cmd->ctrl[0].y = (short)ctrl0y; cmd->ctrl[1].x = (short)ctrl1x; cmd->ctrl[1].y = (short)ctrl1y; cmd->end.x = (short)bx; cmd->end.y = (short)by; cmd->color = col; } NK_API void nk_stroke_rect(struct nk_command_buffer *b, struct nk_rect rect, float rounding, float line_thickness, struct nk_color c) { struct nk_command_rect *cmd; NK_ASSERT(b); if (!b || c.a == 0 || rect.w == 0 || rect.h == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect*) nk_command_buffer_push(b, NK_COMMAND_RECT, sizeof(*cmd)); if (!cmd) return; cmd->rounding = (unsigned short)rounding; cmd->line_thickness = (unsigned short)line_thickness; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->color = c; } NK_API void nk_fill_rect(struct nk_command_buffer *b, struct nk_rect rect, float rounding, struct nk_color c) { struct nk_command_rect_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0 || rect.w == 0 || rect.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect_filled*) nk_command_buffer_push(b, NK_COMMAND_RECT_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->rounding = (unsigned short)rounding; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->color = c; } NK_API void nk_fill_rect_multi_color(struct nk_command_buffer *b, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom) { struct nk_command_rect_multi_color *cmd; NK_ASSERT(b); if (!b || rect.w == 0 || rect.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect_multi_color*) nk_command_buffer_push(b, NK_COMMAND_RECT_MULTI_COLOR, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->left = left; cmd->top = top; cmd->right = right; cmd->bottom = bottom; } NK_API void nk_stroke_circle(struct nk_command_buffer *b, struct nk_rect r, float line_thickness, struct nk_color c) { struct nk_command_circle *cmd; if (!b || r.w == 0 || r.h == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(r.x, r.y, r.w, r.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_circle*) nk_command_buffer_push(b, NK_COMMAND_CIRCLE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(r.w, 0); cmd->h = (unsigned short)NK_MAX(r.h, 0); cmd->color = c; } NK_API void nk_fill_circle(struct nk_command_buffer *b, struct nk_rect r, struct nk_color c) { struct nk_command_circle_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0 || r.w == 0 || r.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(r.x, r.y, r.w, r.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_circle_filled*) nk_command_buffer_push(b, NK_COMMAND_CIRCLE_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(r.w, 0); cmd->h = (unsigned short)NK_MAX(r.h, 0); cmd->color = c; } NK_API void nk_stroke_arc(struct nk_command_buffer *b, float cx, float cy, float radius, float a_min, float a_max, float line_thickness, struct nk_color c) { struct nk_command_arc *cmd; if (!b || c.a == 0 || line_thickness <= 0) return; cmd = (struct nk_command_arc*) nk_command_buffer_push(b, NK_COMMAND_ARC, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->cx = (short)cx; cmd->cy = (short)cy; cmd->r = (unsigned short)radius; cmd->a[0] = a_min; cmd->a[1] = a_max; cmd->color = c; } NK_API void nk_fill_arc(struct nk_command_buffer *b, float cx, float cy, float radius, float a_min, float a_max, struct nk_color c) { struct nk_command_arc_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0) return; cmd = (struct nk_command_arc_filled*) nk_command_buffer_push(b, NK_COMMAND_ARC_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->cx = (short)cx; cmd->cy = (short)cy; cmd->r = (unsigned short)radius; cmd->a[0] = a_min; cmd->a[1] = a_max; cmd->color = c; } NK_API void nk_stroke_triangle(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float x2, float y2, float line_thickness, struct nk_color c) { struct nk_command_triangle *cmd; NK_ASSERT(b); if (!b || c.a == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INBOX(x0, y0, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x1, y1, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x2, y2, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_triangle*) nk_command_buffer_push(b, NK_COMMAND_TRIANGLE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->a.x = (short)x0; cmd->a.y = (short)y0; cmd->b.x = (short)x1; cmd->b.y = (short)y1; cmd->c.x = (short)x2; cmd->c.y = (short)y2; cmd->color = c; } NK_API void nk_fill_triangle(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float x2, float y2, struct nk_color c) { struct nk_command_triangle_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0) return; if (!b) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INBOX(x0, y0, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x1, y1, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x2, y2, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_triangle_filled*) nk_command_buffer_push(b, NK_COMMAND_TRIANGLE_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->a.x = (short)x0; cmd->a.y = (short)y0; cmd->b.x = (short)x1; cmd->b.y = (short)y1; cmd->c.x = (short)x2; cmd->c.y = (short)y2; cmd->color = c; } NK_API void nk_stroke_polygon(struct nk_command_buffer *b, float *points, int point_count, float line_thickness, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polygon *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polygon*) nk_command_buffer_push(b, NK_COMMAND_POLYGON, size); if (!cmd) return; cmd->color = col; cmd->line_thickness = (unsigned short)line_thickness; cmd->point_count = (unsigned short)point_count; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_fill_polygon(struct nk_command_buffer *b, float *points, int point_count, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polygon_filled *cmd; NK_ASSERT(b); if (!b || col.a == 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polygon_filled*) nk_command_buffer_push(b, NK_COMMAND_POLYGON_FILLED, size); if (!cmd) return; cmd->color = col; cmd->point_count = (unsigned short)point_count; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2+0]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_stroke_polyline(struct nk_command_buffer *b, float *points, int point_count, float line_thickness, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polyline *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polyline*) nk_command_buffer_push(b, NK_COMMAND_POLYLINE, size); if (!cmd) return; cmd->color = col; cmd->point_count = (unsigned short)point_count; cmd->line_thickness = (unsigned short)line_thickness; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_draw_image(struct nk_command_buffer *b, struct nk_rect r, const struct nk_image *img, struct nk_color col) { struct nk_command_image *cmd; NK_ASSERT(b); if (!b) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } cmd = (struct nk_command_image*) nk_command_buffer_push(b, NK_COMMAND_IMAGE, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); cmd->img = *img; cmd->col = col; } NK_API void nk_push_custom(struct nk_command_buffer *b, struct nk_rect r, nk_command_custom_callback cb, nk_handle usr) { struct nk_command_custom *cmd; NK_ASSERT(b); if (!b) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } cmd = (struct nk_command_custom*) nk_command_buffer_push(b, NK_COMMAND_CUSTOM, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); cmd->callback_data = usr; cmd->callback = cb; } NK_API void nk_draw_text(struct nk_command_buffer *b, struct nk_rect r, const char *string, int length, const struct nk_user_font *font, struct nk_color bg, struct nk_color fg) { float text_width = 0; struct nk_command_text *cmd; NK_ASSERT(b); NK_ASSERT(font); if (!b || !string || !length || (bg.a == 0 && fg.a == 0)) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } /* make sure text fits inside bounds */ text_width = font->width(font->userdata, font->height, string, length); if (text_width > r.w){ int glyphs = 0; float txt_width = (float)text_width; length = nk_text_clamp(font, string, length, r.w, &glyphs, &txt_width, 0,0); } if (!length) return; cmd = (struct nk_command_text*) nk_command_buffer_push(b, NK_COMMAND_TEXT, sizeof(*cmd) + (nk_size)(length + 1)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)r.w; cmd->h = (unsigned short)r.h; cmd->background = bg; cmd->foreground = fg; cmd->font = font; cmd->length = length; cmd->height = font->height; NK_MEMCPY(cmd->string, string, (nk_size)length); cmd->string[length] = '\0'; } /* =============================================================== * * VERTEX * * ===============================================================*/ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT NK_API void nk_draw_list_init(struct nk_draw_list *list) { nk_size i = 0; NK_ASSERT(list); if (!list) return; nk_zero(list, sizeof(*list)); for (i = 0; i < NK_LEN(list->circle_vtx); ++i) { const float a = ((float)i / (float)NK_LEN(list->circle_vtx)) * 2 * NK_PI; list->circle_vtx[i].x = (float)NK_COS(a); list->circle_vtx[i].y = (float)NK_SIN(a); } } NK_API void nk_draw_list_setup(struct nk_draw_list *canvas, const struct nk_convert_config *config, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, enum nk_anti_aliasing line_aa, enum nk_anti_aliasing shape_aa) { NK_ASSERT(canvas); NK_ASSERT(config); NK_ASSERT(cmds); NK_ASSERT(vertices); NK_ASSERT(elements); if (!canvas || !config || !cmds || !vertices || !elements) return; canvas->buffer = cmds; canvas->config = *config; canvas->elements = elements; canvas->vertices = vertices; canvas->line_AA = line_aa; canvas->shape_AA = shape_aa; canvas->clip_rect = nk_null_rect; canvas->cmd_offset = 0; canvas->element_count = 0; canvas->vertex_count = 0; canvas->cmd_offset = 0; canvas->cmd_count = 0; canvas->path_count = 0; } NK_API const struct nk_draw_command* nk__draw_list_begin(const struct nk_draw_list *canvas, const struct nk_buffer *buffer) { nk_byte *memory; nk_size offset; const struct nk_draw_command *cmd; NK_ASSERT(buffer); if (!buffer || !buffer->size || !canvas->cmd_count) return 0; memory = (nk_byte*)buffer->memory.ptr; offset = buffer->memory.size - canvas->cmd_offset; cmd = nk_ptr_add(const struct nk_draw_command, memory, offset); return cmd; } NK_API const struct nk_draw_command* nk__draw_list_end(const struct nk_draw_list *canvas, const struct nk_buffer *buffer) { nk_size size; nk_size offset; nk_byte *memory; const struct nk_draw_command *end; NK_ASSERT(buffer); NK_ASSERT(canvas); if (!buffer || !canvas) return 0; memory = (nk_byte*)buffer->memory.ptr; size = buffer->memory.size; offset = size - canvas->cmd_offset; end = nk_ptr_add(const struct nk_draw_command, memory, offset); end -= (canvas->cmd_count-1); return end; } NK_API const struct nk_draw_command* nk__draw_list_next(const struct nk_draw_command *cmd, const struct nk_buffer *buffer, const struct nk_draw_list *canvas) { const struct nk_draw_command *end; NK_ASSERT(buffer); NK_ASSERT(canvas); if (!cmd || !buffer || !canvas) return 0; end = nk__draw_list_end(canvas, buffer); if (cmd <= end) return 0; return (cmd-1); } NK_INTERN struct nk_vec2* nk_draw_list_alloc_path(struct nk_draw_list *list, int count) { struct nk_vec2 *points; NK_STORAGE const nk_size point_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size point_size = sizeof(struct nk_vec2); points = (struct nk_vec2*) nk_buffer_alloc(list->buffer, NK_BUFFER_FRONT, point_size * (nk_size)count, point_align); if (!points) return 0; if (!list->path_offset) { void *memory = nk_buffer_memory(list->buffer); list->path_offset = (unsigned int)((nk_byte*)points - (nk_byte*)memory); } list->path_count += (unsigned int)count; return points; } NK_INTERN struct nk_vec2 nk_draw_list_path_last(struct nk_draw_list *list) { void *memory; struct nk_vec2 *point; NK_ASSERT(list->path_count); memory = nk_buffer_memory(list->buffer); point = nk_ptr_add(struct nk_vec2, memory, list->path_offset); point += (list->path_count-1); return *point; } NK_INTERN struct nk_draw_command* nk_draw_list_push_command(struct nk_draw_list *list, struct nk_rect clip, nk_handle texture) { NK_STORAGE const nk_size cmd_align = NK_ALIGNOF(struct nk_draw_command); NK_STORAGE const nk_size cmd_size = sizeof(struct nk_draw_command); struct nk_draw_command *cmd; NK_ASSERT(list); cmd = (struct nk_draw_command*) nk_buffer_alloc(list->buffer, NK_BUFFER_BACK, cmd_size, cmd_align); if (!cmd) return 0; if (!list->cmd_count) { nk_byte *memory = (nk_byte*)nk_buffer_memory(list->buffer); nk_size total = nk_buffer_total(list->buffer); memory = nk_ptr_add(nk_byte, memory, total); list->cmd_offset = (nk_size)(memory - (nk_byte*)cmd); } cmd->elem_count = 0; cmd->clip_rect = clip; cmd->texture = texture; #ifdef NK_INCLUDE_COMMAND_USERDATA cmd->userdata = list->userdata; #endif list->cmd_count++; list->clip_rect = clip; return cmd; } NK_INTERN struct nk_draw_command* nk_draw_list_command_last(struct nk_draw_list *list) { void *memory; nk_size size; struct nk_draw_command *cmd; NK_ASSERT(list->cmd_count); memory = nk_buffer_memory(list->buffer); size = nk_buffer_total(list->buffer); cmd = nk_ptr_add(struct nk_draw_command, memory, size - list->cmd_offset); return (cmd - (list->cmd_count-1)); } NK_INTERN void nk_draw_list_add_clip(struct nk_draw_list *list, struct nk_rect rect) { NK_ASSERT(list); if (!list) return; if (!list->cmd_count) { nk_draw_list_push_command(list, rect, list->config.null.texture); } else { struct nk_draw_command *prev = nk_draw_list_command_last(list); if (prev->elem_count == 0) prev->clip_rect = rect; nk_draw_list_push_command(list, rect, prev->texture); } } NK_INTERN void nk_draw_list_push_image(struct nk_draw_list *list, nk_handle texture) { NK_ASSERT(list); if (!list) return; if (!list->cmd_count) { nk_draw_list_push_command(list, nk_null_rect, texture); } else { struct nk_draw_command *prev = nk_draw_list_command_last(list); if (prev->elem_count == 0) { prev->texture = texture; #ifdef NK_INCLUDE_COMMAND_USERDATA prev->userdata = list->userdata; #endif } else if (prev->texture.id != texture.id #ifdef NK_INCLUDE_COMMAND_USERDATA || prev->userdata.id != list->userdata.id #endif ) nk_draw_list_push_command(list, prev->clip_rect, texture); } } #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_draw_list_push_userdata(struct nk_draw_list *list, nk_handle userdata) { list->userdata = userdata; } #endif NK_INTERN void* nk_draw_list_alloc_vertices(struct nk_draw_list *list, nk_size count) { void *vtx; NK_ASSERT(list); if (!list) return 0; vtx = nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, list->config.vertex_size*count, list->config.vertex_alignment); if (!vtx) return 0; list->vertex_count += (unsigned int)count; /* This assert triggers because your are drawing a lot of stuff and nuklear * defined `nk_draw_index` as `nk_ushort` to safe space be default. * * So you reached the maximum number of indicies or rather vertexes. * To solve this issue please change typdef `nk_draw_index` to `nk_uint` * and don't forget to specify the new element size in your drawing * backend (OpenGL, DirectX, ...). For example in OpenGL for `glDrawElements` * instead of specifing `GL_UNSIGNED_SHORT` you have to define `GL_UNSIGNED_INT`. * Sorry for the inconvenience. */ if(sizeof(nk_draw_index)==2) NK_ASSERT((list->vertex_count < NK_USHORT_MAX && "To many verticies for 16-bit vertex indicies. Please read comment above on how to solve this problem")); return vtx; } NK_INTERN nk_draw_index* nk_draw_list_alloc_elements(struct nk_draw_list *list, nk_size count) { nk_draw_index *ids; struct nk_draw_command *cmd; NK_STORAGE const nk_size elem_align = NK_ALIGNOF(nk_draw_index); NK_STORAGE const nk_size elem_size = sizeof(nk_draw_index); NK_ASSERT(list); if (!list) return 0; ids = (nk_draw_index*) nk_buffer_alloc(list->elements, NK_BUFFER_FRONT, elem_size*count, elem_align); if (!ids) return 0; cmd = nk_draw_list_command_last(list); list->element_count += (unsigned int)count; cmd->elem_count += (unsigned int)count; return ids; } NK_INTERN int nk_draw_vertex_layout_element_is_end_of_layout( const struct nk_draw_vertex_layout_element *element) { return (element->attribute == NK_VERTEX_ATTRIBUTE_COUNT || element->format == NK_FORMAT_COUNT); } NK_INTERN void nk_draw_vertex_color(void *attr, const float *vals, enum nk_draw_vertex_layout_format format) { /* if this triggers you tried to provide a value format for a color */ float val[4]; NK_ASSERT(format >= NK_FORMAT_COLOR_BEGIN); NK_ASSERT(format <= NK_FORMAT_COLOR_END); if (format < NK_FORMAT_COLOR_BEGIN || format > NK_FORMAT_COLOR_END) return; val[0] = NK_SATURATE(vals[0]); val[1] = NK_SATURATE(vals[1]); val[2] = NK_SATURATE(vals[2]); val[3] = NK_SATURATE(vals[3]); switch (format) { default: NK_ASSERT(0 && "Invalid vertex layout color format"); break; case NK_FORMAT_R8G8B8A8: case NK_FORMAT_R8G8B8: { struct nk_color col = nk_rgba_fv(val); NK_MEMCPY(attr, &col.r, sizeof(col)); } break; case NK_FORMAT_B8G8R8A8: { struct nk_color col = nk_rgba_fv(val); struct nk_color bgra = nk_rgba(col.b, col.g, col.r, col.a); NK_MEMCPY(attr, &bgra, sizeof(bgra)); } break; case NK_FORMAT_R16G15B16: { nk_ushort col[3]; col[0] = (nk_ushort)(val[0]*(float)NK_USHORT_MAX); col[1] = (nk_ushort)(val[1]*(float)NK_USHORT_MAX); col[2] = (nk_ushort)(val[2]*(float)NK_USHORT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R16G15B16A16: { nk_ushort col[4]; col[0] = (nk_ushort)(val[0]*(float)NK_USHORT_MAX); col[1] = (nk_ushort)(val[1]*(float)NK_USHORT_MAX); col[2] = (nk_ushort)(val[2]*(float)NK_USHORT_MAX); col[3] = (nk_ushort)(val[3]*(float)NK_USHORT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32: { nk_uint col[3]; col[0] = (nk_uint)(val[0]*(float)NK_UINT_MAX); col[1] = (nk_uint)(val[1]*(float)NK_UINT_MAX); col[2] = (nk_uint)(val[2]*(float)NK_UINT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32A32: { nk_uint col[4]; col[0] = (nk_uint)(val[0]*(float)NK_UINT_MAX); col[1] = (nk_uint)(val[1]*(float)NK_UINT_MAX); col[2] = (nk_uint)(val[2]*(float)NK_UINT_MAX); col[3] = (nk_uint)(val[3]*(float)NK_UINT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32A32_FLOAT: NK_MEMCPY(attr, val, sizeof(float)*4); break; case NK_FORMAT_R32G32B32A32_DOUBLE: { double col[4]; col[0] = (double)val[0]; col[1] = (double)val[1]; col[2] = (double)val[2]; col[3] = (double)val[3]; NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_RGB32: case NK_FORMAT_RGBA32: { struct nk_color col = nk_rgba_fv(val); nk_uint color = nk_color_u32(col); NK_MEMCPY(attr, &color, sizeof(color)); } break; } } NK_INTERN void nk_draw_vertex_element(void *dst, const float *values, int value_count, enum nk_draw_vertex_layout_format format) { int value_index; void *attribute = dst; /* if this triggers you tried to provide a color format for a value */ NK_ASSERT(format < NK_FORMAT_COLOR_BEGIN); if (format >= NK_FORMAT_COLOR_BEGIN && format <= NK_FORMAT_COLOR_END) return; for (value_index = 0; value_index < value_count; ++value_index) { switch (format) { default: NK_ASSERT(0 && "invalid vertex layout format"); break; case NK_FORMAT_SCHAR: { char value = (char)NK_CLAMP((float)NK_SCHAR_MIN, values[value_index], (float)NK_SCHAR_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(char)); } break; case NK_FORMAT_SSHORT: { nk_short value = (nk_short)NK_CLAMP((float)NK_SSHORT_MIN, values[value_index], (float)NK_SSHORT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(value)); } break; case NK_FORMAT_SINT: { nk_int value = (nk_int)NK_CLAMP((float)NK_SINT_MIN, values[value_index], (float)NK_SINT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(nk_int)); } break; case NK_FORMAT_UCHAR: { unsigned char value = (unsigned char)NK_CLAMP((float)NK_UCHAR_MIN, values[value_index], (float)NK_UCHAR_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(unsigned char)); } break; case NK_FORMAT_USHORT: { nk_ushort value = (nk_ushort)NK_CLAMP((float)NK_USHORT_MIN, values[value_index], (float)NK_USHORT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(value)); } break; case NK_FORMAT_UINT: { nk_uint value = (nk_uint)NK_CLAMP((float)NK_UINT_MIN, values[value_index], (float)NK_UINT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(nk_uint)); } break; case NK_FORMAT_FLOAT: NK_MEMCPY(attribute, &values[value_index], sizeof(values[value_index])); attribute = (void*)((char*)attribute + sizeof(float)); break; case NK_FORMAT_DOUBLE: { double value = (double)values[value_index]; NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(double)); } break; } } } NK_INTERN void* nk_draw_vertex(void *dst, const struct nk_convert_config *config, struct nk_vec2 pos, struct nk_vec2 uv, struct nk_colorf color) { void *result = (void*)((char*)dst + config->vertex_size); const struct nk_draw_vertex_layout_element *elem_iter = config->vertex_layout; while (!nk_draw_vertex_layout_element_is_end_of_layout(elem_iter)) { void *address = (void*)((char*)dst + elem_iter->offset); switch (elem_iter->attribute) { case NK_VERTEX_ATTRIBUTE_COUNT: default: NK_ASSERT(0 && "wrong element attribute"); break; case NK_VERTEX_POSITION: nk_draw_vertex_element(address, &pos.x, 2, elem_iter->format); break; case NK_VERTEX_TEXCOORD: nk_draw_vertex_element(address, &uv.x, 2, elem_iter->format); break; case NK_VERTEX_COLOR: nk_draw_vertex_color(address, &color.r, elem_iter->format); break; } elem_iter++; } return result; } NK_API void nk_draw_list_stroke_poly_line(struct nk_draw_list *list, const struct nk_vec2 *points, const unsigned int points_count, struct nk_color color, enum nk_draw_list_stroke closed, float thickness, enum nk_anti_aliasing aliasing) { nk_size count; int thick_line; struct nk_colorf col; struct nk_colorf col_trans; NK_ASSERT(list); if (!list || points_count < 2) return; color.a = (nk_byte)((float)color.a * list->config.global_alpha); count = points_count; if (!closed) count = points_count-1; thick_line = thickness > 1.0f; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_draw_list_push_userdata(list, list->userdata); #endif color.a = (nk_byte)((float)color.a * list->config.global_alpha); nk_color_fv(&col.r, color); col_trans = col; col_trans.a = 0; if (aliasing == NK_ANTI_ALIASING_ON) { /* ANTI-ALIASED STROKE */ const float AA_SIZE = 1.0f; NK_STORAGE const nk_size pnt_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size pnt_size = sizeof(struct nk_vec2); /* allocate vertices and elements */ nk_size i1 = 0; nk_size vertex_offset; nk_size index = list->vertex_count; const nk_size idx_count = (thick_line) ? (count * 18) : (count * 12); const nk_size vtx_count = (thick_line) ? (points_count * 4): (points_count *3); void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); nk_size size; struct nk_vec2 *normals, *temp; if (!vtx || !ids) return; /* temporary allocate normals + points */ vertex_offset = (nk_size)((nk_byte*)vtx - (nk_byte*)list->vertices->memory.ptr); nk_buffer_mark(list->vertices, NK_BUFFER_FRONT); size = pnt_size * ((thick_line) ? 5 : 3) * points_count; normals = (struct nk_vec2*) nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, size, pnt_align); if (!normals) return; temp = normals + points_count; /* make sure vertex pointer is still correct */ vtx = (void*)((nk_byte*)list->vertices->memory.ptr + vertex_offset); /* calculate normals */ for (i1 = 0; i1 < count; ++i1) { const nk_size i2 = ((i1 + 1) == points_count) ? 0 : (i1 + 1); struct nk_vec2 diff = nk_vec2_sub(points[i2], points[i1]); float len; /* vec2 inverted length */ len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); normals[i1].x = diff.y; normals[i1].y = -diff.x; } if (!closed) normals[points_count-1] = normals[points_count-2]; if (!thick_line) { nk_size idx1, i; if (!closed) { struct nk_vec2 d; temp[0] = nk_vec2_add(points[0], nk_vec2_muls(normals[0], AA_SIZE)); temp[1] = nk_vec2_sub(points[0], nk_vec2_muls(normals[0], AA_SIZE)); d = nk_vec2_muls(normals[points_count-1], AA_SIZE); temp[(points_count-1) * 2 + 0] = nk_vec2_add(points[points_count-1], d); temp[(points_count-1) * 2 + 1] = nk_vec2_sub(points[points_count-1], d); } /* fill elements */ idx1 = index; for (i1 = 0; i1 < count; i1++) { struct nk_vec2 dm; float dmr2; nk_size i2 = ((i1 + 1) == points_count) ? 0 : (i1 + 1); nk_size idx2 = ((i1+1) == points_count) ? index: (idx1 + 3); /* average normals */ dm = nk_vec2_muls(nk_vec2_add(normals[i1], normals[i2]), 0.5f); dmr2 = dm.x * dm.x + dm.y* dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f/dmr2; scale = NK_MIN(100.0f, scale); dm = nk_vec2_muls(dm, scale); } dm = nk_vec2_muls(dm, AA_SIZE); temp[i2*2+0] = nk_vec2_add(points[i2], dm); temp[i2*2+1] = nk_vec2_sub(points[i2], dm); ids[0] = (nk_draw_index)(idx2 + 0); ids[1] = (nk_draw_index)(idx1+0); ids[2] = (nk_draw_index)(idx1 + 2); ids[3] = (nk_draw_index)(idx1+2); ids[4] = (nk_draw_index)(idx2 + 2); ids[5] = (nk_draw_index)(idx2+0); ids[6] = (nk_draw_index)(idx2 + 1); ids[7] = (nk_draw_index)(idx1+1); ids[8] = (nk_draw_index)(idx1 + 0); ids[9] = (nk_draw_index)(idx1+0); ids[10]= (nk_draw_index)(idx2 + 0); ids[11]= (nk_draw_index)(idx2+1); ids += 12; idx1 = idx2; } /* fill vertices */ for (i = 0; i < points_count; ++i) { const struct nk_vec2 uv = list->config.null.uv; vtx = nk_draw_vertex(vtx, &list->config, points[i], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*2+0], uv, col_trans); vtx = nk_draw_vertex(vtx, &list->config, temp[i*2+1], uv, col_trans); } } else { nk_size idx1, i; const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f; if (!closed) { struct nk_vec2 d1 = nk_vec2_muls(normals[0], half_inner_thickness + AA_SIZE); struct nk_vec2 d2 = nk_vec2_muls(normals[0], half_inner_thickness); temp[0] = nk_vec2_add(points[0], d1); temp[1] = nk_vec2_add(points[0], d2); temp[2] = nk_vec2_sub(points[0], d2); temp[3] = nk_vec2_sub(points[0], d1); d1 = nk_vec2_muls(normals[points_count-1], half_inner_thickness + AA_SIZE); d2 = nk_vec2_muls(normals[points_count-1], half_inner_thickness); temp[(points_count-1)*4+0] = nk_vec2_add(points[points_count-1], d1); temp[(points_count-1)*4+1] = nk_vec2_add(points[points_count-1], d2); temp[(points_count-1)*4+2] = nk_vec2_sub(points[points_count-1], d2); temp[(points_count-1)*4+3] = nk_vec2_sub(points[points_count-1], d1); } /* add all elements */ idx1 = index; for (i1 = 0; i1 < count; ++i1) { struct nk_vec2 dm_out, dm_in; const nk_size i2 = ((i1+1) == points_count) ? 0: (i1 + 1); nk_size idx2 = ((i1+1) == points_count) ? index: (idx1 + 4); /* average normals */ struct nk_vec2 dm = nk_vec2_muls(nk_vec2_add(normals[i1], normals[i2]), 0.5f); float dmr2 = dm.x * dm.x + dm.y* dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f/dmr2; scale = NK_MIN(100.0f, scale); dm = nk_vec2_muls(dm, scale); } dm_out = nk_vec2_muls(dm, ((half_inner_thickness) + AA_SIZE)); dm_in = nk_vec2_muls(dm, half_inner_thickness); temp[i2*4+0] = nk_vec2_add(points[i2], dm_out); temp[i2*4+1] = nk_vec2_add(points[i2], dm_in); temp[i2*4+2] = nk_vec2_sub(points[i2], dm_in); temp[i2*4+3] = nk_vec2_sub(points[i2], dm_out); /* add indexes */ ids[0] = (nk_draw_index)(idx2 + 1); ids[1] = (nk_draw_index)(idx1+1); ids[2] = (nk_draw_index)(idx1 + 2); ids[3] = (nk_draw_index)(idx1+2); ids[4] = (nk_draw_index)(idx2 + 2); ids[5] = (nk_draw_index)(idx2+1); ids[6] = (nk_draw_index)(idx2 + 1); ids[7] = (nk_draw_index)(idx1+1); ids[8] = (nk_draw_index)(idx1 + 0); ids[9] = (nk_draw_index)(idx1+0); ids[10]= (nk_draw_index)(idx2 + 0); ids[11] = (nk_draw_index)(idx2+1); ids[12]= (nk_draw_index)(idx2 + 2); ids[13] = (nk_draw_index)(idx1+2); ids[14]= (nk_draw_index)(idx1 + 3); ids[15] = (nk_draw_index)(idx1+3); ids[16]= (nk_draw_index)(idx2 + 3); ids[17] = (nk_draw_index)(idx2+2); ids += 18; idx1 = idx2; } /* add vertices */ for (i = 0; i < points_count; ++i) { const struct nk_vec2 uv = list->config.null.uv; vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+0], uv, col_trans); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+1], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+2], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+3], uv, col_trans); } } /* free temporary normals + points */ nk_buffer_reset(list->vertices, NK_BUFFER_FRONT); } else { /* NON ANTI-ALIASED STROKE */ nk_size i1 = 0; nk_size idx = list->vertex_count; const nk_size idx_count = count * 6; const nk_size vtx_count = count * 4; void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); if (!vtx || !ids) return; for (i1 = 0; i1 < count; ++i1) { float dx, dy; const struct nk_vec2 uv = list->config.null.uv; const nk_size i2 = ((i1+1) == points_count) ? 0 : i1 + 1; const struct nk_vec2 p1 = points[i1]; const struct nk_vec2 p2 = points[i2]; struct nk_vec2 diff = nk_vec2_sub(p2, p1); float len; /* vec2 inverted length */ len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); /* add vertices */ dx = diff.x * (thickness * 0.5f); dy = diff.y * (thickness * 0.5f); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p1.x + dy, p1.y - dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p2.x + dy, p2.y - dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p2.x - dy, p2.y + dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p1.x - dy, p1.y + dx), uv, col); ids[0] = (nk_draw_index)(idx+0); ids[1] = (nk_draw_index)(idx+1); ids[2] = (nk_draw_index)(idx+2); ids[3] = (nk_draw_index)(idx+0); ids[4] = (nk_draw_index)(idx+2); ids[5] = (nk_draw_index)(idx+3); ids += 6; idx += 4; } } } NK_API void nk_draw_list_fill_poly_convex(struct nk_draw_list *list, const struct nk_vec2 *points, const unsigned int points_count, struct nk_color color, enum nk_anti_aliasing aliasing) { struct nk_colorf col; struct nk_colorf col_trans; NK_STORAGE const nk_size pnt_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size pnt_size = sizeof(struct nk_vec2); NK_ASSERT(list); if (!list || points_count < 3) return; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_draw_list_push_userdata(list, list->userdata); #endif color.a = (nk_byte)((float)color.a * list->config.global_alpha); nk_color_fv(&col.r, color); col_trans = col; col_trans.a = 0; if (aliasing == NK_ANTI_ALIASING_ON) { nk_size i = 0; nk_size i0 = 0; nk_size i1 = 0; const float AA_SIZE = 1.0f; nk_size vertex_offset = 0; nk_size index = list->vertex_count; const nk_size idx_count = (points_count-2)*3 + points_count*6; const nk_size vtx_count = (points_count*2); void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); nk_size size = 0; struct nk_vec2 *normals = 0; unsigned int vtx_inner_idx = (unsigned int)(index + 0); unsigned int vtx_outer_idx = (unsigned int)(index + 1); if (!vtx || !ids) return; /* temporary allocate normals */ vertex_offset = (nk_size)((nk_byte*)vtx - (nk_byte*)list->vertices->memory.ptr); nk_buffer_mark(list->vertices, NK_BUFFER_FRONT); size = pnt_size * points_count; normals = (struct nk_vec2*) nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, size, pnt_align); if (!normals) return; vtx = (void*)((nk_byte*)list->vertices->memory.ptr + vertex_offset); /* add elements */ for (i = 2; i < points_count; i++) { ids[0] = (nk_draw_index)(vtx_inner_idx); ids[1] = (nk_draw_index)(vtx_inner_idx + ((i-1) << 1)); ids[2] = (nk_draw_index)(vtx_inner_idx + (i << 1)); ids += 3; } /* compute normals */ for (i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++) { struct nk_vec2 p0 = points[i0]; struct nk_vec2 p1 = points[i1]; struct nk_vec2 diff = nk_vec2_sub(p1, p0); /* vec2 inverted length */ float len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); normals[i0].x = diff.y; normals[i0].y = -diff.x; } /* add vertices + indexes */ for (i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++) { const struct nk_vec2 uv = list->config.null.uv; struct nk_vec2 n0 = normals[i0]; struct nk_vec2 n1 = normals[i1]; struct nk_vec2 dm = nk_vec2_muls(nk_vec2_add(n0, n1), 0.5f); float dmr2 = dm.x*dm.x + dm.y*dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f / dmr2; scale = NK_MIN(scale, 100.0f); dm = nk_vec2_muls(dm, scale); } dm = nk_vec2_muls(dm, AA_SIZE * 0.5f); /* add vertices */ vtx = nk_draw_vertex(vtx, &list->config, nk_vec2_sub(points[i1], dm), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2_add(points[i1], dm), uv, col_trans); /* add indexes */ ids[0] = (nk_draw_index)(vtx_inner_idx+(i1<<1)); ids[1] = (nk_draw_index)(vtx_inner_idx+(i0<<1)); ids[2] = (nk_draw_index)(vtx_outer_idx+(i0<<1)); ids[3] = (nk_draw_index)(vtx_outer_idx+(i0<<1)); ids[4] = (nk_draw_index)(vtx_outer_idx+(i1<<1)); ids[5] = (nk_draw_index)(vtx_inner_idx+(i1<<1)); ids += 6; } /* free temporary normals + points */ nk_buffer_reset(list->vertices, NK_BUFFER_FRONT); } else { nk_size i = 0; nk_size index = list->vertex_count; const nk_size idx_count = (points_count-2)*3; const nk_size vtx_count = points_count; void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); if (!vtx || !ids) return; for (i = 0; i < vtx_count; ++i) vtx = nk_draw_vertex(vtx, &list->config, points[i], list->config.null.uv, col); for (i = 2; i < points_count; ++i) { ids[0] = (nk_draw_index)index; ids[1] = (nk_draw_index)(index+ i - 1); ids[2] = (nk_draw_index)(index+i); ids += 3; } } } NK_API void nk_draw_list_path_clear(struct nk_draw_list *list) { NK_ASSERT(list); if (!list) return; nk_buffer_reset(list->buffer, NK_BUFFER_FRONT); list->path_count = 0; list->path_offset = 0; } NK_API void nk_draw_list_path_line_to(struct nk_draw_list *list, struct nk_vec2 pos) { struct nk_vec2 *points = 0; struct nk_draw_command *cmd = 0; NK_ASSERT(list); if (!list) return; if (!list->cmd_count) nk_draw_list_add_clip(list, nk_null_rect); cmd = nk_draw_list_command_last(list); if (cmd && cmd->texture.ptr != list->config.null.texture.ptr) nk_draw_list_push_image(list, list->config.null.texture); points = nk_draw_list_alloc_path(list, 1); if (!points) return; points[0] = pos; } NK_API void nk_draw_list_path_arc_to_fast(struct nk_draw_list *list, struct nk_vec2 center, float radius, int a_min, int a_max) { int a = 0; NK_ASSERT(list); if (!list) return; if (a_min <= a_max) { for (a = a_min; a <= a_max; a++) { const struct nk_vec2 c = list->circle_vtx[(nk_size)a % NK_LEN(list->circle_vtx)]; const float x = center.x + c.x * radius; const float y = center.y + c.y * radius; nk_draw_list_path_line_to(list, nk_vec2(x, y)); } } } NK_API void nk_draw_list_path_arc_to(struct nk_draw_list *list, struct nk_vec2 center, float radius, float a_min, float a_max, unsigned int segments) { unsigned int i = 0; NK_ASSERT(list); if (!list) return; if (radius == 0.0f) return; /* This algorithm for arc drawing relies on these two trigonometric identities[1]: sin(a + b) = sin(a) * cos(b) + cos(a) * sin(b) cos(a + b) = cos(a) * cos(b) - sin(a) * sin(b) Two coordinates (x, y) of a point on a circle centered on the origin can be written in polar form as: x = r * cos(a) y = r * sin(a) where r is the radius of the circle, a is the angle between (x, y) and the origin. This allows us to rotate the coordinates around the origin by an angle b using the following transformation: x' = r * cos(a + b) = x * cos(b) - y * sin(b) y' = r * sin(a + b) = y * cos(b) + x * sin(b) [1] https://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities */ {const float d_angle = (a_max - a_min) / (float)segments; const float sin_d = (float)NK_SIN(d_angle); const float cos_d = (float)NK_COS(d_angle); float cx = (float)NK_COS(a_min) * radius; float cy = (float)NK_SIN(a_min) * radius; for(i = 0; i <= segments; ++i) { float new_cx, new_cy; const float x = center.x + cx; const float y = center.y + cy; nk_draw_list_path_line_to(list, nk_vec2(x, y)); new_cx = cx * cos_d - cy * sin_d; new_cy = cy * cos_d + cx * sin_d; cx = new_cx; cy = new_cy; }} } NK_API void nk_draw_list_path_rect_to(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, float rounding) { float r; NK_ASSERT(list); if (!list) return; r = rounding; r = NK_MIN(r, ((b.x-a.x) < 0) ? -(b.x-a.x): (b.x-a.x)); r = NK_MIN(r, ((b.y-a.y) < 0) ? -(b.y-a.y): (b.y-a.y)); if (r == 0.0f) { nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, nk_vec2(b.x,a.y)); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, nk_vec2(a.x,b.y)); } else { nk_draw_list_path_arc_to_fast(list, nk_vec2(a.x + r, a.y + r), r, 6, 9); nk_draw_list_path_arc_to_fast(list, nk_vec2(b.x - r, a.y + r), r, 9, 12); nk_draw_list_path_arc_to_fast(list, nk_vec2(b.x - r, b.y - r), r, 0, 3); nk_draw_list_path_arc_to_fast(list, nk_vec2(a.x + r, b.y - r), r, 3, 6); } } NK_API void nk_draw_list_path_curve_to(struct nk_draw_list *list, struct nk_vec2 p2, struct nk_vec2 p3, struct nk_vec2 p4, unsigned int num_segments) { float t_step; unsigned int i_step; struct nk_vec2 p1; NK_ASSERT(list); NK_ASSERT(list->path_count); if (!list || !list->path_count) return; num_segments = NK_MAX(num_segments, 1); p1 = nk_draw_list_path_last(list); t_step = 1.0f/(float)num_segments; for (i_step = 1; i_step <= num_segments; ++i_step) { float t = t_step * (float)i_step; float u = 1.0f - t; float w1 = u*u*u; float w2 = 3*u*u*t; float w3 = 3*u*t*t; float w4 = t * t *t; float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; nk_draw_list_path_line_to(list, nk_vec2(x,y)); } } NK_API void nk_draw_list_path_fill(struct nk_draw_list *list, struct nk_color color) { struct nk_vec2 *points; NK_ASSERT(list); if (!list) return; points = (struct nk_vec2*)nk_buffer_memory(list->buffer); nk_draw_list_fill_poly_convex(list, points, list->path_count, color, list->config.shape_AA); nk_draw_list_path_clear(list); } NK_API void nk_draw_list_path_stroke(struct nk_draw_list *list, struct nk_color color, enum nk_draw_list_stroke closed, float thickness) { struct nk_vec2 *points; NK_ASSERT(list); if (!list) return; points = (struct nk_vec2*)nk_buffer_memory(list->buffer); nk_draw_list_stroke_poly_line(list, points, list->path_count, color, closed, thickness, list->config.line_AA); nk_draw_list_path_clear(list); } NK_API void nk_draw_list_stroke_line(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_color col, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); } else { nk_draw_list_path_line_to(list, nk_vec2_sub(a,nk_vec2(0.5f,0.5f))); nk_draw_list_path_line_to(list, nk_vec2_sub(b,nk_vec2(0.5f,0.5f))); } nk_draw_list_path_stroke(list, col, NK_STROKE_OPEN, thickness); } NK_API void nk_draw_list_fill_rect(struct nk_draw_list *list, struct nk_rect rect, struct nk_color col, float rounding) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_rect_to(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } else { nk_draw_list_path_rect_to(list, nk_vec2(rect.x-0.5f, rect.y-0.5f), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_rect(struct nk_draw_list *list, struct nk_rect rect, struct nk_color col, float rounding, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_rect_to(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } else { nk_draw_list_path_rect_to(list, nk_vec2(rect.x-0.5f, rect.y-0.5f), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_fill_rect_multi_color(struct nk_draw_list *list, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom) { void *vtx; struct nk_colorf col_left, col_top; struct nk_colorf col_right, col_bottom; nk_draw_index *idx; nk_draw_index index; nk_color_fv(&col_left.r, left); nk_color_fv(&col_right.r, right); nk_color_fv(&col_top.r, top); nk_color_fv(&col_bottom.r, bottom); NK_ASSERT(list); if (!list) return; nk_draw_list_push_image(list, list->config.null.texture); index = (nk_draw_index)list->vertex_count; vtx = nk_draw_list_alloc_vertices(list, 4); idx = nk_draw_list_alloc_elements(list, 6); if (!vtx || !idx) return; idx[0] = (nk_draw_index)(index+0); idx[1] = (nk_draw_index)(index+1); idx[2] = (nk_draw_index)(index+2); idx[3] = (nk_draw_index)(index+0); idx[4] = (nk_draw_index)(index+2); idx[5] = (nk_draw_index)(index+3); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x, rect.y), list->config.null.uv, col_left); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x + rect.w, rect.y), list->config.null.uv, col_top); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x + rect.w, rect.y + rect.h), list->config.null.uv, col_right); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x, rect.y + rect.h), list->config.null.uv, col_bottom); } NK_API void nk_draw_list_fill_triangle(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color col) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, c); nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_triangle(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color col, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, c); nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_fill_circle(struct nk_draw_list *list, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs) { float a_max; NK_ASSERT(list); if (!list || !col.a) return; a_max = NK_PI * 2.0f * ((float)segs - 1.0f) / (float)segs; nk_draw_list_path_arc_to(list, center, radius, 0.0f, a_max, segs); nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_circle(struct nk_draw_list *list, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs, float thickness) { float a_max; NK_ASSERT(list); if (!list || !col.a) return; a_max = NK_PI * 2.0f * ((float)segs - 1.0f) / (float)segs; nk_draw_list_path_arc_to(list, center, radius, 0.0f, a_max, segs); nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_stroke_curve(struct nk_draw_list *list, struct nk_vec2 p0, struct nk_vec2 cp0, struct nk_vec2 cp1, struct nk_vec2 p1, struct nk_color col, unsigned int segments, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, p0); nk_draw_list_path_curve_to(list, cp0, cp1, p1, segments); nk_draw_list_path_stroke(list, col, NK_STROKE_OPEN, thickness); } NK_INTERN void nk_draw_list_push_rect_uv(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 c, struct nk_vec2 uva, struct nk_vec2 uvc, struct nk_color color) { void *vtx; struct nk_vec2 uvb; struct nk_vec2 uvd; struct nk_vec2 b; struct nk_vec2 d; struct nk_colorf col; nk_draw_index *idx; nk_draw_index index; NK_ASSERT(list); if (!list) return; nk_color_fv(&col.r, color); uvb = nk_vec2(uvc.x, uva.y); uvd = nk_vec2(uva.x, uvc.y); b = nk_vec2(c.x, a.y); d = nk_vec2(a.x, c.y); index = (nk_draw_index)list->vertex_count; vtx = nk_draw_list_alloc_vertices(list, 4); idx = nk_draw_list_alloc_elements(list, 6); if (!vtx || !idx) return; idx[0] = (nk_draw_index)(index+0); idx[1] = (nk_draw_index)(index+1); idx[2] = (nk_draw_index)(index+2); idx[3] = (nk_draw_index)(index+0); idx[4] = (nk_draw_index)(index+2); idx[5] = (nk_draw_index)(index+3); vtx = nk_draw_vertex(vtx, &list->config, a, uva, col); vtx = nk_draw_vertex(vtx, &list->config, b, uvb, col); vtx = nk_draw_vertex(vtx, &list->config, c, uvc, col); vtx = nk_draw_vertex(vtx, &list->config, d, uvd, col); } NK_API void nk_draw_list_add_image(struct nk_draw_list *list, struct nk_image texture, struct nk_rect rect, struct nk_color color) { NK_ASSERT(list); if (!list) return; /* push new command with given texture */ nk_draw_list_push_image(list, texture.handle); if (nk_image_is_subimage(&texture)) { /* add region inside of the texture */ struct nk_vec2 uv[2]; uv[0].x = (float)texture.region[0]/(float)texture.w; uv[0].y = (float)texture.region[1]/(float)texture.h; uv[1].x = (float)(texture.region[0] + texture.region[2])/(float)texture.w; uv[1].y = (float)(texture.region[1] + texture.region[3])/(float)texture.h; nk_draw_list_push_rect_uv(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), uv[0], uv[1], color); } else nk_draw_list_push_rect_uv(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), nk_vec2(0.0f, 0.0f), nk_vec2(1.0f, 1.0f),color); } NK_API void nk_draw_list_add_text(struct nk_draw_list *list, const struct nk_user_font *font, struct nk_rect rect, const char *text, int len, float font_height, struct nk_color fg) { float x = 0; int text_len = 0; nk_rune unicode = 0; nk_rune next = 0; int glyph_len = 0; int next_glyph_len = 0; struct nk_user_font_glyph g; NK_ASSERT(list); if (!list || !len || !text) return; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, list->clip_rect.x, list->clip_rect.y, list->clip_rect.w, list->clip_rect.h)) return; nk_draw_list_push_image(list, font->texture); x = rect.x; glyph_len = nk_utf_decode(text, &unicode, len); if (!glyph_len) return; /* draw every glyph image */ fg.a = (nk_byte)((float)fg.a * list->config.global_alpha); while (text_len < len && glyph_len) { float gx, gy, gh, gw; float char_width = 0; if (unicode == NK_UTF_INVALID) break; /* query currently drawn glyph information */ next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len); font->query(font->userdata, font_height, &g, unicode, (next == NK_UTF_INVALID) ? '\0' : next); /* calculate and draw glyph drawing rectangle and image */ gx = x + g.offset.x; gy = rect.y + g.offset.y; gw = g.width; gh = g.height; char_width = g.xadvance; nk_draw_list_push_rect_uv(list, nk_vec2(gx,gy), nk_vec2(gx + gw, gy+ gh), g.uv[0], g.uv[1], fg); /* offset next glyph */ text_len += glyph_len; x += char_width; glyph_len = next_glyph_len; unicode = next; } } NK_API nk_flags nk_convert(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config *config) { nk_flags res = NK_CONVERT_SUCCESS; const struct nk_command *cmd; NK_ASSERT(ctx); NK_ASSERT(cmds); NK_ASSERT(vertices); NK_ASSERT(elements); NK_ASSERT(config); NK_ASSERT(config->vertex_layout); NK_ASSERT(config->vertex_size); if (!ctx || !cmds || !vertices || !elements || !config || !config->vertex_layout) return NK_CONVERT_INVALID_PARAM; nk_draw_list_setup(&ctx->draw_list, config, cmds, vertices, elements, config->line_AA, config->shape_AA); nk_foreach(cmd, ctx) { #ifdef NK_INCLUDE_COMMAND_USERDATA ctx->draw_list.userdata = cmd->userdata; #endif switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s = (const struct nk_command_scissor*)cmd; nk_draw_list_add_clip(&ctx->draw_list, nk_rect(s->x, s->y, s->w, s->h)); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line*)cmd; nk_draw_list_stroke_line(&ctx->draw_list, nk_vec2(l->begin.x, l->begin.y), nk_vec2(l->end.x, l->end.y), l->color, l->line_thickness); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve*)cmd; nk_draw_list_stroke_curve(&ctx->draw_list, nk_vec2(q->begin.x, q->begin.y), nk_vec2(q->ctrl[0].x, q->ctrl[0].y), nk_vec2(q->ctrl[1].x, q->ctrl[1].y), nk_vec2(q->end.x, q->end.y), q->color, config->curve_segment_count, q->line_thickness); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect*)cmd; nk_draw_list_stroke_rect(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->color, (float)r->rounding, r->line_thickness); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled*)cmd; nk_draw_list_fill_rect(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->color, (float)r->rounding); } break; case NK_COMMAND_RECT_MULTI_COLOR: { const struct nk_command_rect_multi_color *r = (const struct nk_command_rect_multi_color*)cmd; nk_draw_list_fill_rect_multi_color(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->left, r->top, r->right, r->bottom); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle*)cmd; nk_draw_list_stroke_circle(&ctx->draw_list, nk_vec2((float)c->x + (float)c->w/2, (float)c->y + (float)c->h/2), (float)c->w/2, c->color, config->circle_segment_count, c->line_thickness); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_draw_list_fill_circle(&ctx->draw_list, nk_vec2((float)c->x + (float)c->w/2, (float)c->y + (float)c->h/2), (float)c->w/2, c->color, config->circle_segment_count); } break; case NK_COMMAND_ARC: { const struct nk_command_arc *c = (const struct nk_command_arc*)cmd; nk_draw_list_path_line_to(&ctx->draw_list, nk_vec2(c->cx, c->cy)); nk_draw_list_path_arc_to(&ctx->draw_list, nk_vec2(c->cx, c->cy), c->r, c->a[0], c->a[1], config->arc_segment_count); nk_draw_list_path_stroke(&ctx->draw_list, c->color, NK_STROKE_CLOSED, c->line_thickness); } break; case NK_COMMAND_ARC_FILLED: { const struct nk_command_arc_filled *c = (const struct nk_command_arc_filled*)cmd; nk_draw_list_path_line_to(&ctx->draw_list, nk_vec2(c->cx, c->cy)); nk_draw_list_path_arc_to(&ctx->draw_list, nk_vec2(c->cx, c->cy), c->r, c->a[0], c->a[1], config->arc_segment_count); nk_draw_list_path_fill(&ctx->draw_list, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle *t = (const struct nk_command_triangle*)cmd; nk_draw_list_stroke_triangle(&ctx->draw_list, nk_vec2(t->a.x, t->a.y), nk_vec2(t->b.x, t->b.y), nk_vec2(t->c.x, t->c.y), t->color, t->line_thickness); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled*)cmd; nk_draw_list_fill_triangle(&ctx->draw_list, nk_vec2(t->a.x, t->a.y), nk_vec2(t->b.x, t->b.y), nk_vec2(t->c.x, t->c.y), t->color); } break; case NK_COMMAND_POLYGON: { int i; const struct nk_command_polygon*p = (const struct nk_command_polygon*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_stroke(&ctx->draw_list, p->color, NK_STROKE_CLOSED, p->line_thickness); } break; case NK_COMMAND_POLYGON_FILLED: { int i; const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_fill(&ctx->draw_list, p->color); } break; case NK_COMMAND_POLYLINE: { int i; const struct nk_command_polyline *p = (const struct nk_command_polyline*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_stroke(&ctx->draw_list, p->color, NK_STROKE_OPEN, p->line_thickness); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_draw_list_add_text(&ctx->draw_list, t->font, nk_rect(t->x, t->y, t->w, t->h), t->string, t->length, t->height, t->foreground); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image*)cmd; nk_draw_list_add_image(&ctx->draw_list, i->img, nk_rect(i->x, i->y, i->w, i->h), i->col); } break; case NK_COMMAND_CUSTOM: { const struct nk_command_custom *c = (const struct nk_command_custom*)cmd; c->callback(&ctx->draw_list, c->x, c->y, c->w, c->h, c->callback_data); } break; default: break; } } res |= (cmds->needed > cmds->allocated + (cmds->memory.size - cmds->size)) ? NK_CONVERT_COMMAND_BUFFER_FULL: 0; res |= (vertices->needed > vertices->allocated) ? NK_CONVERT_VERTEX_BUFFER_FULL: 0; res |= (elements->needed > elements->allocated) ? NK_CONVERT_ELEMENT_BUFFER_FULL: 0; return res; } NK_API const struct nk_draw_command* nk__draw_begin(const struct nk_context *ctx, const struct nk_buffer *buffer) { return nk__draw_list_begin(&ctx->draw_list, buffer); } NK_API const struct nk_draw_command* nk__draw_end(const struct nk_context *ctx, const struct nk_buffer *buffer) { return nk__draw_list_end(&ctx->draw_list, buffer); } NK_API const struct nk_draw_command* nk__draw_next(const struct nk_draw_command *cmd, const struct nk_buffer *buffer, const struct nk_context *ctx) { return nk__draw_list_next(cmd, buffer, &ctx->draw_list); } #endif #ifdef NK_INCLUDE_FONT_BAKING /* ------------------------------------------------------------- * * RECT PACK * * --------------------------------------------------------------*/ /* stb_rect_pack.h - v0.05 - public domain - rectangle packing */ /* Sean Barrett 2014 */ #define NK_RP__MAXVAL 0xffff typedef unsigned short nk_rp_coord; struct nk_rp_rect { /* reserved for your use: */ int id; /* input: */ nk_rp_coord w, h; /* output: */ nk_rp_coord x, y; int was_packed; /* non-zero if valid packing */ }; /* 16 bytes, nominally */ struct nk_rp_node { nk_rp_coord x,y; struct nk_rp_node *next; }; struct nk_rp_context { int width; int height; int align; int init_mode; int heuristic; int num_nodes; struct nk_rp_node *active_head; struct nk_rp_node *free_head; struct nk_rp_node extra[2]; /* we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2' */ }; struct nk_rp__findresult { int x,y; struct nk_rp_node **prev_link; }; enum NK_RP_HEURISTIC { NK_RP_HEURISTIC_Skyline_default=0, NK_RP_HEURISTIC_Skyline_BL_sortHeight = NK_RP_HEURISTIC_Skyline_default, NK_RP_HEURISTIC_Skyline_BF_sortHeight }; enum NK_RP_INIT_STATE{NK_RP__INIT_skyline = 1}; NK_INTERN void nk_rp_setup_allow_out_of_mem(struct nk_rp_context *context, int allow_out_of_mem) { if (allow_out_of_mem) /* if it's ok to run out of memory, then don't bother aligning them; */ /* this gives better packing, but may fail due to OOM (even though */ /* the rectangles easily fit). @TODO a smarter approach would be to only */ /* quantize once we've hit OOM, then we could get rid of this parameter. */ context->align = 1; else { /* if it's not ok to run out of memory, then quantize the widths */ /* so that num_nodes is always enough nodes. */ /* */ /* I.e. num_nodes * align >= width */ /* align >= width / num_nodes */ /* align = ceil(width/num_nodes) */ context->align = (context->width + context->num_nodes-1) / context->num_nodes; } } NK_INTERN void nk_rp_init_target(struct nk_rp_context *context, int width, int height, struct nk_rp_node *nodes, int num_nodes) { int i; #ifndef STBRP_LARGE_RECTS NK_ASSERT(width <= 0xffff && height <= 0xffff); #endif for (i=0; i < num_nodes-1; ++i) nodes[i].next = &nodes[i+1]; nodes[i].next = 0; context->init_mode = NK_RP__INIT_skyline; context->heuristic = NK_RP_HEURISTIC_Skyline_default; context->free_head = &nodes[0]; context->active_head = &context->extra[0]; context->width = width; context->height = height; context->num_nodes = num_nodes; nk_rp_setup_allow_out_of_mem(context, 0); /* node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly) */ context->extra[0].x = 0; context->extra[0].y = 0; context->extra[0].next = &context->extra[1]; context->extra[1].x = (nk_rp_coord) width; context->extra[1].y = 65535; context->extra[1].next = 0; } /* find minimum y position if it starts at x1 */ NK_INTERN int nk_rp__skyline_find_min_y(struct nk_rp_context *c, struct nk_rp_node *first, int x0, int width, int *pwaste) { struct nk_rp_node *node = first; int x1 = x0 + width; int min_y, visited_width, waste_area; NK_ASSERT(first->x <= x0); NK_UNUSED(c); NK_ASSERT(node->next->x > x0); /* we ended up handling this in the caller for efficiency */ NK_ASSERT(node->x <= x0); min_y = 0; waste_area = 0; visited_width = 0; while (node->x < x1) { if (node->y > min_y) { /* raise min_y higher. */ /* we've accounted for all waste up to min_y, */ /* but we'll now add more waste for everything we've visited */ waste_area += visited_width * (node->y - min_y); min_y = node->y; /* the first time through, visited_width might be reduced */ if (node->x < x0) visited_width += node->next->x - x0; else visited_width += node->next->x - node->x; } else { /* add waste area */ int under_width = node->next->x - node->x; if (under_width + visited_width > width) under_width = width - visited_width; waste_area += under_width * (min_y - node->y); visited_width += under_width; } node = node->next; } *pwaste = waste_area; return min_y; } NK_INTERN struct nk_rp__findresult nk_rp__skyline_find_best_pos(struct nk_rp_context *c, int width, int height) { int best_waste = (1<<30), best_x, best_y = (1 << 30); struct nk_rp__findresult fr; struct nk_rp_node **prev, *node, *tail, **best = 0; /* align to multiple of c->align */ width = (width + c->align - 1); width -= width % c->align; NK_ASSERT(width % c->align == 0); node = c->active_head; prev = &c->active_head; while (node->x + width <= c->width) { int y,waste; y = nk_rp__skyline_find_min_y(c, node, node->x, width, &waste); /* actually just want to test BL */ if (c->heuristic == NK_RP_HEURISTIC_Skyline_BL_sortHeight) { /* bottom left */ if (y < best_y) { best_y = y; best = prev; } } else { /* best-fit */ if (y + height <= c->height) { /* can only use it if it first vertically */ if (y < best_y || (y == best_y && waste < best_waste)) { best_y = y; best_waste = waste; best = prev; } } } prev = &node->next; node = node->next; } best_x = (best == 0) ? 0 : (*best)->x; /* if doing best-fit (BF), we also have to try aligning right edge to each node position */ /* */ /* e.g, if fitting */ /* */ /* ____________________ */ /* |____________________| */ /* */ /* into */ /* */ /* | | */ /* | ____________| */ /* |____________| */ /* */ /* then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned */ /* */ /* This makes BF take about 2x the time */ if (c->heuristic == NK_RP_HEURISTIC_Skyline_BF_sortHeight) { tail = c->active_head; node = c->active_head; prev = &c->active_head; /* find first node that's admissible */ while (tail->x < width) tail = tail->next; while (tail) { int xpos = tail->x - width; int y,waste; NK_ASSERT(xpos >= 0); /* find the left position that matches this */ while (node->next->x <= xpos) { prev = &node->next; node = node->next; } NK_ASSERT(node->next->x > xpos && node->x <= xpos); y = nk_rp__skyline_find_min_y(c, node, xpos, width, &waste); if (y + height < c->height) { if (y <= best_y) { if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) { best_x = xpos; NK_ASSERT(y <= best_y); best_y = y; best_waste = waste; best = prev; } } } tail = tail->next; } } fr.prev_link = best; fr.x = best_x; fr.y = best_y; return fr; } NK_INTERN struct nk_rp__findresult nk_rp__skyline_pack_rectangle(struct nk_rp_context *context, int width, int height) { /* find best position according to heuristic */ struct nk_rp__findresult res = nk_rp__skyline_find_best_pos(context, width, height); struct nk_rp_node *node, *cur; /* bail if: */ /* 1. it failed */ /* 2. the best node doesn't fit (we don't always check this) */ /* 3. we're out of memory */ if (res.prev_link == 0 || res.y + height > context->height || context->free_head == 0) { res.prev_link = 0; return res; } /* on success, create new node */ node = context->free_head; node->x = (nk_rp_coord) res.x; node->y = (nk_rp_coord) (res.y + height); context->free_head = node->next; /* insert the new node into the right starting point, and */ /* let 'cur' point to the remaining nodes needing to be */ /* stitched back in */ cur = *res.prev_link; if (cur->x < res.x) { /* preserve the existing one, so start testing with the next one */ struct nk_rp_node *next = cur->next; cur->next = node; cur = next; } else { *res.prev_link = node; } /* from here, traverse cur and free the nodes, until we get to one */ /* that shouldn't be freed */ while (cur->next && cur->next->x <= res.x + width) { struct nk_rp_node *next = cur->next; /* move the current node to the free list */ cur->next = context->free_head; context->free_head = cur; cur = next; } /* stitch the list back in */ node->next = cur; if (cur->x < res.x + width) cur->x = (nk_rp_coord) (res.x + width); return res; } NK_INTERN int nk_rect_height_compare(const void *a, const void *b) { const struct nk_rp_rect *p = (const struct nk_rp_rect *) a; const struct nk_rp_rect *q = (const struct nk_rp_rect *) b; if (p->h > q->h) return -1; if (p->h < q->h) return 1; return (p->w > q->w) ? -1 : (p->w < q->w); } NK_INTERN int nk_rect_original_order(const void *a, const void *b) { const struct nk_rp_rect *p = (const struct nk_rp_rect *) a; const struct nk_rp_rect *q = (const struct nk_rp_rect *) b; return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed); } NK_INTERN void nk_rp_qsort(struct nk_rp_rect *array, unsigned int len, int(*cmp)(const void*,const void*)) { /* iterative quick sort */ #define NK_MAX_SORT_STACK 64 unsigned right, left = 0, stack[NK_MAX_SORT_STACK], pos = 0; unsigned seed = len/2 * 69069+1; for (;;) { for (; left+1 < len; len++) { struct nk_rp_rect pivot, tmp; if (pos == NK_MAX_SORT_STACK) len = stack[pos = 0]; pivot = array[left+seed%(len-left)]; seed = seed * 69069 + 1; stack[pos++] = len; for (right = left-1;;) { while (cmp(&array[++right], &pivot) < 0); while (cmp(&pivot, &array[--len]) < 0); if (right >= len) break; tmp = array[right]; array[right] = array[len]; array[len] = tmp; } } if (pos == 0) break; left = len; len = stack[--pos]; } #undef NK_MAX_SORT_STACK } NK_INTERN void nk_rp_pack_rects(struct nk_rp_context *context, struct nk_rp_rect *rects, int num_rects) { int i; /* we use the 'was_packed' field internally to allow sorting/unsorting */ for (i=0; i < num_rects; ++i) { rects[i].was_packed = i; } /* sort according to heuristic */ nk_rp_qsort(rects, (unsigned)num_rects, nk_rect_height_compare); for (i=0; i < num_rects; ++i) { struct nk_rp__findresult fr = nk_rp__skyline_pack_rectangle(context, rects[i].w, rects[i].h); if (fr.prev_link) { rects[i].x = (nk_rp_coord) fr.x; rects[i].y = (nk_rp_coord) fr.y; } else { rects[i].x = rects[i].y = NK_RP__MAXVAL; } } /* unsort */ nk_rp_qsort(rects, (unsigned)num_rects, nk_rect_original_order); /* set was_packed flags */ for (i=0; i < num_rects; ++i) rects[i].was_packed = !(rects[i].x == NK_RP__MAXVAL && rects[i].y == NK_RP__MAXVAL); } /* * ============================================================== * * TRUETYPE * * =============================================================== */ /* stb_truetype.h - v1.07 - public domain */ #define NK_TT_MAX_OVERSAMPLE 8 #define NK_TT__OVER_MASK (NK_TT_MAX_OVERSAMPLE-1) struct nk_tt_bakedchar { unsigned short x0,y0,x1,y1; /* coordinates of bbox in bitmap */ float xoff,yoff,xadvance; }; struct nk_tt_aligned_quad{ float x0,y0,s0,t0; /* top-left */ float x1,y1,s1,t1; /* bottom-right */ }; struct nk_tt_packedchar { unsigned short x0,y0,x1,y1; /* coordinates of bbox in bitmap */ float xoff,yoff,xadvance; float xoff2,yoff2; }; struct nk_tt_pack_range { float font_size; int first_unicode_codepoint_in_range; /* if non-zero, then the chars are continuous, and this is the first codepoint */ int *array_of_unicode_codepoints; /* if non-zero, then this is an array of unicode codepoints */ int num_chars; struct nk_tt_packedchar *chardata_for_range; /* output */ unsigned char h_oversample, v_oversample; /* don't set these, they're used internally */ }; struct nk_tt_pack_context { void *pack_info; int width; int height; int stride_in_bytes; int padding; unsigned int h_oversample, v_oversample; unsigned char *pixels; void *nodes; }; struct nk_tt_fontinfo { const unsigned char* data; /* pointer to .ttf file */ int fontstart;/* offset of start of font */ int numGlyphs;/* number of glyphs, needed for range checking */ int loca,head,glyf,hhea,hmtx,kern; /* table locations as offset from start of .ttf */ int index_map; /* a cmap mapping for our chosen character encoding */ int indexToLocFormat; /* format needed to map from glyph index to glyph */ }; enum { NK_TT_vmove=1, NK_TT_vline, NK_TT_vcurve }; struct nk_tt_vertex { short x,y,cx,cy; unsigned char type,padding; }; struct nk_tt__bitmap{ int w,h,stride; unsigned char *pixels; }; struct nk_tt__hheap_chunk { struct nk_tt__hheap_chunk *next; }; struct nk_tt__hheap { struct nk_allocator alloc; struct nk_tt__hheap_chunk *head; void *first_free; int num_remaining_in_head_chunk; }; struct nk_tt__edge { float x0,y0, x1,y1; int invert; }; struct nk_tt__active_edge { struct nk_tt__active_edge *next; float fx,fdx,fdy; float direction; float sy; float ey; }; struct nk_tt__point {float x,y;}; #define NK_TT_MACSTYLE_DONTCARE 0 #define NK_TT_MACSTYLE_BOLD 1 #define NK_TT_MACSTYLE_ITALIC 2 #define NK_TT_MACSTYLE_UNDERSCORE 4 #define NK_TT_MACSTYLE_NONE 8 /* <= not same as 0, this makes us check the bitfield is 0 */ enum { /* platformID */ NK_TT_PLATFORM_ID_UNICODE =0, NK_TT_PLATFORM_ID_MAC =1, NK_TT_PLATFORM_ID_ISO =2, NK_TT_PLATFORM_ID_MICROSOFT =3 }; enum { /* encodingID for NK_TT_PLATFORM_ID_UNICODE */ NK_TT_UNICODE_EID_UNICODE_1_0 =0, NK_TT_UNICODE_EID_UNICODE_1_1 =1, NK_TT_UNICODE_EID_ISO_10646 =2, NK_TT_UNICODE_EID_UNICODE_2_0_BMP=3, NK_TT_UNICODE_EID_UNICODE_2_0_FULL=4 }; enum { /* encodingID for NK_TT_PLATFORM_ID_MICROSOFT */ NK_TT_MS_EID_SYMBOL =0, NK_TT_MS_EID_UNICODE_BMP =1, NK_TT_MS_EID_SHIFTJIS =2, NK_TT_MS_EID_UNICODE_FULL =10 }; enum { /* encodingID for NK_TT_PLATFORM_ID_MAC; same as Script Manager codes */ NK_TT_MAC_EID_ROMAN =0, NK_TT_MAC_EID_ARABIC =4, NK_TT_MAC_EID_JAPANESE =1, NK_TT_MAC_EID_HEBREW =5, NK_TT_MAC_EID_CHINESE_TRAD =2, NK_TT_MAC_EID_GREEK =6, NK_TT_MAC_EID_KOREAN =3, NK_TT_MAC_EID_RUSSIAN =7 }; enum { /* languageID for NK_TT_PLATFORM_ID_MICROSOFT; same as LCID... */ /* problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs */ NK_TT_MS_LANG_ENGLISH =0x0409, NK_TT_MS_LANG_ITALIAN =0x0410, NK_TT_MS_LANG_CHINESE =0x0804, NK_TT_MS_LANG_JAPANESE =0x0411, NK_TT_MS_LANG_DUTCH =0x0413, NK_TT_MS_LANG_KOREAN =0x0412, NK_TT_MS_LANG_FRENCH =0x040c, NK_TT_MS_LANG_RUSSIAN =0x0419, NK_TT_MS_LANG_GERMAN =0x0407, NK_TT_MS_LANG_SPANISH =0x0409, NK_TT_MS_LANG_HEBREW =0x040d, NK_TT_MS_LANG_SWEDISH =0x041D }; enum { /* languageID for NK_TT_PLATFORM_ID_MAC */ NK_TT_MAC_LANG_ENGLISH =0 , NK_TT_MAC_LANG_JAPANESE =11, NK_TT_MAC_LANG_ARABIC =12, NK_TT_MAC_LANG_KOREAN =23, NK_TT_MAC_LANG_DUTCH =4 , NK_TT_MAC_LANG_RUSSIAN =32, NK_TT_MAC_LANG_FRENCH =1 , NK_TT_MAC_LANG_SPANISH =6 , NK_TT_MAC_LANG_GERMAN =2 , NK_TT_MAC_LANG_SWEDISH =5 , NK_TT_MAC_LANG_HEBREW =10, NK_TT_MAC_LANG_CHINESE_SIMPLIFIED =33, NK_TT_MAC_LANG_ITALIAN =3 , NK_TT_MAC_LANG_CHINESE_TRAD =19 }; #define nk_ttBYTE(p) (* (const nk_byte *) (p)) #define nk_ttCHAR(p) (* (const char *) (p)) #if defined(NK_BIGENDIAN) && !defined(NK_ALLOW_UNALIGNED_TRUETYPE) #define nk_ttUSHORT(p) (* (nk_ushort *) (p)) #define nk_ttSHORT(p) (* (nk_short *) (p)) #define nk_ttULONG(p) (* (nk_uint *) (p)) #define nk_ttLONG(p) (* (nk_int *) (p)) #else static nk_ushort nk_ttUSHORT(const nk_byte *p) { return (nk_ushort)(p[0]*256 + p[1]); } static nk_short nk_ttSHORT(const nk_byte *p) { return (nk_short)(p[0]*256 + p[1]); } static nk_uint nk_ttULONG(const nk_byte *p) { return (nk_uint)((p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]); } #endif #define nk_tt_tag4(p,c0,c1,c2,c3)\ ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3)) #define nk_tt_tag(p,str) nk_tt_tag4(p,str[0],str[1],str[2],str[3]) NK_INTERN int nk_tt_GetGlyphShape(const struct nk_tt_fontinfo *info, struct nk_allocator *alloc, int glyph_index, struct nk_tt_vertex **pvertices); NK_INTERN nk_uint nk_tt__find_table(const nk_byte *data, nk_uint fontstart, const char *tag) { /* @OPTIMIZE: binary search */ nk_int num_tables = nk_ttUSHORT(data+fontstart+4); nk_uint tabledir = fontstart + 12; nk_int i; for (i = 0; i < num_tables; ++i) { nk_uint loc = tabledir + (nk_uint)(16*i); if (nk_tt_tag(data+loc+0, tag)) return nk_ttULONG(data+loc+8); } return 0; } NK_INTERN int nk_tt_InitFont(struct nk_tt_fontinfo *info, const unsigned char *data2, int fontstart) { nk_uint cmap, t; nk_int i,numTables; const nk_byte *data = (const nk_byte *) data2; info->data = data; info->fontstart = fontstart; cmap = nk_tt__find_table(data, (nk_uint)fontstart, "cmap"); /* required */ info->loca = (int)nk_tt__find_table(data, (nk_uint)fontstart, "loca"); /* required */ info->head = (int)nk_tt__find_table(data, (nk_uint)fontstart, "head"); /* required */ info->glyf = (int)nk_tt__find_table(data, (nk_uint)fontstart, "glyf"); /* required */ info->hhea = (int)nk_tt__find_table(data, (nk_uint)fontstart, "hhea"); /* required */ info->hmtx = (int)nk_tt__find_table(data, (nk_uint)fontstart, "hmtx"); /* required */ info->kern = (int)nk_tt__find_table(data, (nk_uint)fontstart, "kern"); /* not required */ if (!cmap || !info->loca || !info->head || !info->glyf || !info->hhea || !info->hmtx) return 0; t = nk_tt__find_table(data, (nk_uint)fontstart, "maxp"); if (t) info->numGlyphs = nk_ttUSHORT(data+t+4); else info->numGlyphs = 0xffff; /* find a cmap encoding table we understand *now* to avoid searching */ /* later. (todo: could make this installable) */ /* the same regardless of glyph. */ numTables = nk_ttUSHORT(data + cmap + 2); info->index_map = 0; for (i=0; i < numTables; ++i) { nk_uint encoding_record = cmap + 4 + 8 * (nk_uint)i; /* find an encoding we understand: */ switch(nk_ttUSHORT(data+encoding_record)) { case NK_TT_PLATFORM_ID_MICROSOFT: switch (nk_ttUSHORT(data+encoding_record+2)) { case NK_TT_MS_EID_UNICODE_BMP: case NK_TT_MS_EID_UNICODE_FULL: /* MS/Unicode */ info->index_map = (int)(cmap + nk_ttULONG(data+encoding_record+4)); break; default: break; } break; case NK_TT_PLATFORM_ID_UNICODE: /* Mac/iOS has these */ /* all the encodingIDs are unicode, so we don't bother to check it */ info->index_map = (int)(cmap + nk_ttULONG(data+encoding_record+4)); break; default: break; } } if (info->index_map == 0) return 0; info->indexToLocFormat = nk_ttUSHORT(data+info->head + 50); return 1; } NK_INTERN int nk_tt_FindGlyphIndex(const struct nk_tt_fontinfo *info, int unicode_codepoint) { const nk_byte *data = info->data; nk_uint index_map = (nk_uint)info->index_map; nk_ushort format = nk_ttUSHORT(data + index_map + 0); if (format == 0) { /* apple byte encoding */ nk_int bytes = nk_ttUSHORT(data + index_map + 2); if (unicode_codepoint < bytes-6) return nk_ttBYTE(data + index_map + 6 + unicode_codepoint); return 0; } else if (format == 6) { nk_uint first = nk_ttUSHORT(data + index_map + 6); nk_uint count = nk_ttUSHORT(data + index_map + 8); if ((nk_uint) unicode_codepoint >= first && (nk_uint) unicode_codepoint < first+count) return nk_ttUSHORT(data + index_map + 10 + (unicode_codepoint - (int)first)*2); return 0; } else if (format == 2) { NK_ASSERT(0); /* @TODO: high-byte mapping for japanese/chinese/korean */ return 0; } else if (format == 4) { /* standard mapping for windows fonts: binary search collection of ranges */ nk_ushort segcount = nk_ttUSHORT(data+index_map+6) >> 1; nk_ushort searchRange = nk_ttUSHORT(data+index_map+8) >> 1; nk_ushort entrySelector = nk_ttUSHORT(data+index_map+10); nk_ushort rangeShift = nk_ttUSHORT(data+index_map+12) >> 1; /* do a binary search of the segments */ nk_uint endCount = index_map + 14; nk_uint search = endCount; if (unicode_codepoint > 0xffff) return 0; /* they lie from endCount .. endCount + segCount */ /* but searchRange is the nearest power of two, so... */ if (unicode_codepoint >= nk_ttUSHORT(data + search + rangeShift*2)) search += (nk_uint)(rangeShift*2); /* now decrement to bias correctly to find smallest */ search -= 2; while (entrySelector) { nk_ushort end; searchRange >>= 1; end = nk_ttUSHORT(data + search + searchRange*2); if (unicode_codepoint > end) search += (nk_uint)(searchRange*2); --entrySelector; } search += 2; { nk_ushort offset, start; nk_ushort item = (nk_ushort) ((search - endCount) >> 1); NK_ASSERT(unicode_codepoint <= nk_ttUSHORT(data + endCount + 2*item)); start = nk_ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item); if (unicode_codepoint < start) return 0; offset = nk_ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item); if (offset == 0) return (nk_ushort) (unicode_codepoint + nk_ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item)); return nk_ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item); } } else if (format == 12 || format == 13) { nk_uint ngroups = nk_ttULONG(data+index_map+12); nk_int low,high; low = 0; high = (nk_int)ngroups; /* Binary search the right group. */ while (low < high) { nk_int mid = low + ((high-low) >> 1); /* rounds down, so low <= mid < high */ nk_uint start_char = nk_ttULONG(data+index_map+16+mid*12); nk_uint end_char = nk_ttULONG(data+index_map+16+mid*12+4); if ((nk_uint) unicode_codepoint < start_char) high = mid; else if ((nk_uint) unicode_codepoint > end_char) low = mid+1; else { nk_uint start_glyph = nk_ttULONG(data+index_map+16+mid*12+8); if (format == 12) return (int)start_glyph + (int)unicode_codepoint - (int)start_char; else /* format == 13 */ return (int)start_glyph; } } return 0; /* not found */ } /* @TODO */ NK_ASSERT(0); return 0; } NK_INTERN void nk_tt_setvertex(struct nk_tt_vertex *v, nk_byte type, nk_int x, nk_int y, nk_int cx, nk_int cy) { v->type = type; v->x = (nk_short) x; v->y = (nk_short) y; v->cx = (nk_short) cx; v->cy = (nk_short) cy; } NK_INTERN int nk_tt__GetGlyfOffset(const struct nk_tt_fontinfo *info, int glyph_index) { int g1,g2; if (glyph_index >= info->numGlyphs) return -1; /* glyph index out of range */ if (info->indexToLocFormat >= 2) return -1; /* unknown index->glyph map format */ if (info->indexToLocFormat == 0) { g1 = info->glyf + nk_ttUSHORT(info->data + info->loca + glyph_index * 2) * 2; g2 = info->glyf + nk_ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2; } else { g1 = info->glyf + (int)nk_ttULONG (info->data + info->loca + glyph_index * 4); g2 = info->glyf + (int)nk_ttULONG (info->data + info->loca + glyph_index * 4 + 4); } return g1==g2 ? -1 : g1; /* if length is 0, return -1 */ } NK_INTERN int nk_tt_GetGlyphBox(const struct nk_tt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) { int g = nk_tt__GetGlyfOffset(info, glyph_index); if (g < 0) return 0; if (x0) *x0 = nk_ttSHORT(info->data + g + 2); if (y0) *y0 = nk_ttSHORT(info->data + g + 4); if (x1) *x1 = nk_ttSHORT(info->data + g + 6); if (y1) *y1 = nk_ttSHORT(info->data + g + 8); return 1; } NK_INTERN int nk_tt__close_shape(struct nk_tt_vertex *vertices, int num_vertices, int was_off, int start_off, nk_int sx, nk_int sy, nk_int scx, nk_int scy, nk_int cx, nk_int cy) { if (start_off) { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy); nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, sx,sy,scx,scy); } else { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve,sx,sy,cx,cy); else nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vline,sx,sy,0,0); } return num_vertices; } NK_INTERN int nk_tt_GetGlyphShape(const struct nk_tt_fontinfo *info, struct nk_allocator *alloc, int glyph_index, struct nk_tt_vertex **pvertices) { nk_short numberOfContours; const nk_byte *endPtsOfContours; const nk_byte *data = info->data; struct nk_tt_vertex *vertices=0; int num_vertices=0; int g = nk_tt__GetGlyfOffset(info, glyph_index); *pvertices = 0; if (g < 0) return 0; numberOfContours = nk_ttSHORT(data + g); if (numberOfContours > 0) { nk_byte flags=0,flagcount; nk_int ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0; nk_int x,y,cx,cy,sx,sy, scx,scy; const nk_byte *points; endPtsOfContours = (data + g + 10); ins = nk_ttUSHORT(data + g + 10 + numberOfContours * 2); points = data + g + 10 + numberOfContours * 2 + 2 + ins; n = 1+nk_ttUSHORT(endPtsOfContours + numberOfContours*2-2); m = n + 2*numberOfContours; /* a loose bound on how many vertices we might need */ vertices = (struct nk_tt_vertex *)alloc->alloc(alloc->userdata, 0, (nk_size)m * sizeof(vertices[0])); if (vertices == 0) return 0; next_move = 0; flagcount=0; /* in first pass, we load uninterpreted data into the allocated array */ /* above, shifted to the end of the array so we won't overwrite it when */ /* we create our final data starting from the front */ off = m - n; /* starting offset for uninterpreted data, regardless of how m ends up being calculated */ /* first load flags */ for (i=0; i < n; ++i) { if (flagcount == 0) { flags = *points++; if (flags & 8) flagcount = *points++; } else --flagcount; vertices[off+i].type = flags; } /* now load x coordinates */ x=0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; if (flags & 2) { nk_short dx = *points++; x += (flags & 16) ? dx : -dx; /* ??? */ } else { if (!(flags & 16)) { x = x + (nk_short) (points[0]*256 + points[1]); points += 2; } } vertices[off+i].x = (nk_short) x; } /* now load y coordinates */ y=0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; if (flags & 4) { nk_short dy = *points++; y += (flags & 32) ? dy : -dy; /* ??? */ } else { if (!(flags & 32)) { y = y + (nk_short) (points[0]*256 + points[1]); points += 2; } } vertices[off+i].y = (nk_short) y; } /* now convert them to our format */ num_vertices=0; sx = sy = cx = cy = scx = scy = 0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; x = (nk_short) vertices[off+i].x; y = (nk_short) vertices[off+i].y; if (next_move == i) { if (i != 0) num_vertices = nk_tt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); /* now start the new one */ start_off = !(flags & 1); if (start_off) { /* if we start off with an off-curve point, then when we need to find a point on the curve */ /* where we can start, and we need to save some state for when we wraparound. */ scx = x; scy = y; if (!(vertices[off+i+1].type & 1)) { /* next point is also a curve point, so interpolate an on-point curve */ sx = (x + (nk_int) vertices[off+i+1].x) >> 1; sy = (y + (nk_int) vertices[off+i+1].y) >> 1; } else { /* otherwise just use the next point as our start point */ sx = (nk_int) vertices[off+i+1].x; sy = (nk_int) vertices[off+i+1].y; ++i; /* we're using point i+1 as the starting point, so skip it */ } } else { sx = x; sy = y; } nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vmove,sx,sy,0,0); was_off = 0; next_move = 1 + nk_ttUSHORT(endPtsOfContours+j*2); ++j; } else { if (!(flags & 1)) { /* if it's a curve */ if (was_off) /* two off-curve control points in a row means interpolate an on-curve midpoint */ nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy); cx = x; cy = y; was_off = 1; } else { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, x,y, cx, cy); else nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vline, x,y,0,0); was_off = 0; } } } num_vertices = nk_tt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); } else if (numberOfContours == -1) { /* Compound shapes. */ int more = 1; const nk_byte *comp = data + g + 10; num_vertices = 0; vertices = 0; while (more) { nk_ushort flags, gidx; int comp_num_verts = 0, i; struct nk_tt_vertex *comp_verts = 0, *tmp = 0; float mtx[6] = {1,0,0,1,0,0}, m, n; flags = (nk_ushort)nk_ttSHORT(comp); comp+=2; gidx = (nk_ushort)nk_ttSHORT(comp); comp+=2; if (flags & 2) { /* XY values */ if (flags & 1) { /* shorts */ mtx[4] = nk_ttSHORT(comp); comp+=2; mtx[5] = nk_ttSHORT(comp); comp+=2; } else { mtx[4] = nk_ttCHAR(comp); comp+=1; mtx[5] = nk_ttCHAR(comp); comp+=1; } } else { /* @TODO handle matching point */ NK_ASSERT(0); } if (flags & (1<<3)) { /* WE_HAVE_A_SCALE */ mtx[0] = mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = mtx[2] = 0; } else if (flags & (1<<6)) { /* WE_HAVE_AN_X_AND_YSCALE */ mtx[0] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = mtx[2] = 0; mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; } else if (flags & (1<<7)) { /* WE_HAVE_A_TWO_BY_TWO */ mtx[0] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[2] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; } /* Find transformation scales. */ m = (float) NK_SQRT(mtx[0]*mtx[0] + mtx[1]*mtx[1]); n = (float) NK_SQRT(mtx[2]*mtx[2] + mtx[3]*mtx[3]); /* Get indexed glyph. */ comp_num_verts = nk_tt_GetGlyphShape(info, alloc, gidx, &comp_verts); if (comp_num_verts > 0) { /* Transform vertices. */ for (i = 0; i < comp_num_verts; ++i) { struct nk_tt_vertex* v = &comp_verts[i]; short x,y; x=v->x; y=v->y; v->x = (short)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); v->y = (short)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); x=v->cx; y=v->cy; v->cx = (short)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); v->cy = (short)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); } /* Append vertices. */ tmp = (struct nk_tt_vertex*)alloc->alloc(alloc->userdata, 0, (nk_size)(num_vertices+comp_num_verts)*sizeof(struct nk_tt_vertex)); if (!tmp) { if (vertices) alloc->free(alloc->userdata, vertices); if (comp_verts) alloc->free(alloc->userdata, comp_verts); return 0; } if (num_vertices > 0) NK_MEMCPY(tmp, vertices, (nk_size)num_vertices*sizeof(struct nk_tt_vertex)); NK_MEMCPY(tmp+num_vertices, comp_verts, (nk_size)comp_num_verts*sizeof(struct nk_tt_vertex)); if (vertices) alloc->free(alloc->userdata,vertices); vertices = tmp; alloc->free(alloc->userdata,comp_verts); num_vertices += comp_num_verts; } /* More components ? */ more = flags & (1<<5); } } else if (numberOfContours < 0) { /* @TODO other compound variations? */ NK_ASSERT(0); } else { /* numberOfCounters == 0, do nothing */ } *pvertices = vertices; return num_vertices; } NK_INTERN void nk_tt_GetGlyphHMetrics(const struct nk_tt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing) { nk_ushort numOfLongHorMetrics = nk_ttUSHORT(info->data+info->hhea + 34); if (glyph_index < numOfLongHorMetrics) { if (advanceWidth) *advanceWidth = nk_ttSHORT(info->data + info->hmtx + 4*glyph_index); if (leftSideBearing) *leftSideBearing = nk_ttSHORT(info->data + info->hmtx + 4*glyph_index + 2); } else { if (advanceWidth) *advanceWidth = nk_ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1)); if (leftSideBearing) *leftSideBearing = nk_ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics)); } } NK_INTERN void nk_tt_GetFontVMetrics(const struct nk_tt_fontinfo *info, int *ascent, int *descent, int *lineGap) { if (ascent ) *ascent = nk_ttSHORT(info->data+info->hhea + 4); if (descent) *descent = nk_ttSHORT(info->data+info->hhea + 6); if (lineGap) *lineGap = nk_ttSHORT(info->data+info->hhea + 8); } NK_INTERN float nk_tt_ScaleForPixelHeight(const struct nk_tt_fontinfo *info, float height) { int fheight = nk_ttSHORT(info->data + info->hhea + 4) - nk_ttSHORT(info->data + info->hhea + 6); return (float) height / (float)fheight; } NK_INTERN float nk_tt_ScaleForMappingEmToPixels(const struct nk_tt_fontinfo *info, float pixels) { int unitsPerEm = nk_ttUSHORT(info->data + info->head + 18); return pixels / (float)unitsPerEm; } /*------------------------------------------------------------- * antialiasing software rasterizer * --------------------------------------------------------------*/ NK_INTERN void nk_tt_GetGlyphBitmapBoxSubpixel(const struct nk_tt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) { int x0,y0,x1,y1; if (!nk_tt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) { /* e.g. space character */ if (ix0) *ix0 = 0; if (iy0) *iy0 = 0; if (ix1) *ix1 = 0; if (iy1) *iy1 = 0; } else { /* move to integral bboxes (treating pixels as little squares, what pixels get touched)? */ if (ix0) *ix0 = nk_ifloorf((float)x0 * scale_x + shift_x); if (iy0) *iy0 = nk_ifloorf((float)-y1 * scale_y + shift_y); if (ix1) *ix1 = nk_iceilf ((float)x1 * scale_x + shift_x); if (iy1) *iy1 = nk_iceilf ((float)-y0 * scale_y + shift_y); } } NK_INTERN void nk_tt_GetGlyphBitmapBox(const struct nk_tt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) { nk_tt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1); } /*------------------------------------------------------------- * Rasterizer * --------------------------------------------------------------*/ NK_INTERN void* nk_tt__hheap_alloc(struct nk_tt__hheap *hh, nk_size size) { if (hh->first_free) { void *p = hh->first_free; hh->first_free = * (void **) p; return p; } else { if (hh->num_remaining_in_head_chunk == 0) { int count = (size < 32 ? 2000 : size < 128 ? 800 : 100); struct nk_tt__hheap_chunk *c = (struct nk_tt__hheap_chunk *) hh->alloc.alloc(hh->alloc.userdata, 0, sizeof(struct nk_tt__hheap_chunk) + size * (nk_size)count); if (c == 0) return 0; c->next = hh->head; hh->head = c; hh->num_remaining_in_head_chunk = count; } --hh->num_remaining_in_head_chunk; return (char *) (hh->head) + size * (nk_size)hh->num_remaining_in_head_chunk; } } NK_INTERN void nk_tt__hheap_free(struct nk_tt__hheap *hh, void *p) { *(void **) p = hh->first_free; hh->first_free = p; } NK_INTERN void nk_tt__hheap_cleanup(struct nk_tt__hheap *hh) { struct nk_tt__hheap_chunk *c = hh->head; while (c) { struct nk_tt__hheap_chunk *n = c->next; hh->alloc.free(hh->alloc.userdata, c); c = n; } } NK_INTERN struct nk_tt__active_edge* nk_tt__new_active(struct nk_tt__hheap *hh, struct nk_tt__edge *e, int off_x, float start_point) { struct nk_tt__active_edge *z = (struct nk_tt__active_edge *) nk_tt__hheap_alloc(hh, sizeof(*z)); float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); /*STBTT_assert(e->y0 <= start_point); */ if (!z) return z; z->fdx = dxdy; z->fdy = (dxdy != 0) ? (1/dxdy): 0; z->fx = e->x0 + dxdy * (start_point - e->y0); z->fx -= (float)off_x; z->direction = e->invert ? 1.0f : -1.0f; z->sy = e->y0; z->ey = e->y1; z->next = 0; return z; } NK_INTERN void nk_tt__handle_clipped_edge(float *scanline, int x, struct nk_tt__active_edge *e, float x0, float y0, float x1, float y1) { if (y0 == y1) return; NK_ASSERT(y0 < y1); NK_ASSERT(e->sy <= e->ey); if (y0 > e->ey) return; if (y1 < e->sy) return; if (y0 < e->sy) { x0 += (x1-x0) * (e->sy - y0) / (y1-y0); y0 = e->sy; } if (y1 > e->ey) { x1 += (x1-x0) * (e->ey - y1) / (y1-y0); y1 = e->ey; } if (x0 == x) NK_ASSERT(x1 <= x+1); else if (x0 == x+1) NK_ASSERT(x1 >= x); else if (x0 <= x) NK_ASSERT(x1 <= x); else if (x0 >= x+1) NK_ASSERT(x1 >= x+1); else NK_ASSERT(x1 >= x && x1 <= x+1); if (x0 <= x && x1 <= x) scanline[x] += e->direction * (y1-y0); else if (x0 >= x+1 && x1 >= x+1); else { NK_ASSERT(x0 >= x && x0 <= x+1 && x1 >= x && x1 <= x+1); /* coverage = 1 - average x position */ scanline[x] += (float)e->direction * (float)(y1-y0) * (1.0f-((x0-(float)x)+(x1-(float)x))/2.0f); } } NK_INTERN void nk_tt__fill_active_edges_new(float *scanline, float *scanline_fill, int len, struct nk_tt__active_edge *e, float y_top) { float y_bottom = y_top+1; while (e) { /* brute force every pixel */ /* compute intersection points with top & bottom */ NK_ASSERT(e->ey >= y_top); if (e->fdx == 0) { float x0 = e->fx; if (x0 < len) { if (x0 >= 0) { nk_tt__handle_clipped_edge(scanline,(int) x0,e, x0,y_top, x0,y_bottom); nk_tt__handle_clipped_edge(scanline_fill-1,(int) x0+1,e, x0,y_top, x0,y_bottom); } else { nk_tt__handle_clipped_edge(scanline_fill-1,0,e, x0,y_top, x0,y_bottom); } } } else { float x0 = e->fx; float dx = e->fdx; float xb = x0 + dx; float x_top, x_bottom; float y0,y1; float dy = e->fdy; NK_ASSERT(e->sy <= y_bottom && e->ey >= y_top); /* compute endpoints of line segment clipped to this scanline (if the */ /* line segment starts on this scanline. x0 is the intersection of the */ /* line with y_top, but that may be off the line segment. */ if (e->sy > y_top) { x_top = x0 + dx * (e->sy - y_top); y0 = e->sy; } else { x_top = x0; y0 = y_top; } if (e->ey < y_bottom) { x_bottom = x0 + dx * (e->ey - y_top); y1 = e->ey; } else { x_bottom = xb; y1 = y_bottom; } if (x_top >= 0 && x_bottom >= 0 && x_top < len && x_bottom < len) { /* from here on, we don't have to range check x values */ if ((int) x_top == (int) x_bottom) { float height; /* simple case, only spans one pixel */ int x = (int) x_top; height = y1 - y0; NK_ASSERT(x >= 0 && x < len); scanline[x] += e->direction * (1.0f-(((float)x_top - (float)x) + ((float)x_bottom-(float)x))/2.0f) * (float)height; scanline_fill[x] += e->direction * (float)height; /* everything right of this pixel is filled */ } else { int x,x1,x2; float y_crossing, step, sign, area; /* covers 2+ pixels */ if (x_top > x_bottom) { /* flip scanline vertically; signed area is the same */ float t; y0 = y_bottom - (y0 - y_top); y1 = y_bottom - (y1 - y_top); t = y0; y0 = y1; y1 = t; t = x_bottom; x_bottom = x_top; x_top = t; dx = -dx; dy = -dy; t = x0; x0 = xb; xb = t; } x1 = (int) x_top; x2 = (int) x_bottom; /* compute intersection with y axis at x1+1 */ y_crossing = ((float)x1+1 - (float)x0) * (float)dy + (float)y_top; sign = e->direction; /* area of the rectangle covered from y0..y_crossing */ area = sign * (y_crossing-y0); /* area of the triangle (x_top,y0), (x+1,y0), (x+1,y_crossing) */ scanline[x1] += area * (1.0f-((float)((float)x_top - (float)x1)+(float)(x1+1-x1))/2.0f); step = sign * dy; for (x = x1+1; x < x2; ++x) { scanline[x] += area + step/2; area += step; } y_crossing += (float)dy * (float)(x2 - (x1+1)); scanline[x2] += area + sign * (1.0f-((float)(x2-x2)+((float)x_bottom-(float)x2))/2.0f) * (y1-y_crossing); scanline_fill[x2] += sign * (y1-y0); } } else { /* if edge goes outside of box we're drawing, we require */ /* clipping logic. since this does not match the intended use */ /* of this library, we use a different, very slow brute */ /* force implementation */ int x; for (x=0; x < len; ++x) { /* cases: */ /* */ /* there can be up to two intersections with the pixel. any intersection */ /* with left or right edges can be handled by splitting into two (or three) */ /* regions. intersections with top & bottom do not necessitate case-wise logic. */ /* */ /* the old way of doing this found the intersections with the left & right edges, */ /* then used some simple logic to produce up to three segments in sorted order */ /* from top-to-bottom. however, this had a problem: if an x edge was epsilon */ /* across the x border, then the corresponding y position might not be distinct */ /* from the other y segment, and it might ignored as an empty segment. to avoid */ /* that, we need to explicitly produce segments based on x positions. */ /* rename variables to clear pairs */ float ya = y_top; float x1 = (float) (x); float x2 = (float) (x+1); float x3 = xb; float y3 = y_bottom; float yb,y2; yb = ((float)x - x0) / dx + y_top; y2 = ((float)x+1 - x0) / dx + y_top; if (x0 < x1 && x3 > x2) { /* three segments descending down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else if (x3 < x1 && x0 > x2) { /* three segments descending down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x0 < x1 && x3 > x1) { /* two segments across x, down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x3 < x1 && x0 > x1) { /* two segments across x, down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x0 < x2 && x3 > x2) { /* two segments across x+1, down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else if (x3 < x2 && x0 > x2) { /* two segments across x+1, down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else { /* one segment */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x3,y3); } } } } e = e->next; } } NK_INTERN void nk_tt__rasterize_sorted_edges(struct nk_tt__bitmap *result, struct nk_tt__edge *e, int n, int vsubsample, int off_x, int off_y, struct nk_allocator *alloc) { /* directly AA rasterize edges w/o supersampling */ struct nk_tt__hheap hh; struct nk_tt__active_edge *active = 0; int y,j=0, i; float scanline_data[129], *scanline, *scanline2; NK_UNUSED(vsubsample); nk_zero_struct(hh); hh.alloc = *alloc; if (result->w > 64) scanline = (float *) alloc->alloc(alloc->userdata,0, (nk_size)(result->w*2+1) * sizeof(float)); else scanline = scanline_data; scanline2 = scanline + result->w; y = off_y; e[n].y0 = (float) (off_y + result->h) + 1; while (j < result->h) { /* find center of pixel for this scanline */ float scan_y_top = (float)y + 0.0f; float scan_y_bottom = (float)y + 1.0f; struct nk_tt__active_edge **step = &active; NK_MEMSET(scanline , 0, (nk_size)result->w*sizeof(scanline[0])); NK_MEMSET(scanline2, 0, (nk_size)(result->w+1)*sizeof(scanline[0])); /* update all active edges; */ /* remove all active edges that terminate before the top of this scanline */ while (*step) { struct nk_tt__active_edge * z = *step; if (z->ey <= scan_y_top) { *step = z->next; /* delete from list */ NK_ASSERT(z->direction); z->direction = 0; nk_tt__hheap_free(&hh, z); } else { step = &((*step)->next); /* advance through list */ } } /* insert all edges that start before the bottom of this scanline */ while (e->y0 <= scan_y_bottom) { if (e->y0 != e->y1) { struct nk_tt__active_edge *z = nk_tt__new_active(&hh, e, off_x, scan_y_top); if (z != 0) { NK_ASSERT(z->ey >= scan_y_top); /* insert at front */ z->next = active; active = z; } } ++e; } /* now process all active edges */ if (active) nk_tt__fill_active_edges_new(scanline, scanline2+1, result->w, active, scan_y_top); { float sum = 0; for (i=0; i < result->w; ++i) { float k; int m; sum += scanline2[i]; k = scanline[i] + sum; k = (float) NK_ABS(k) * 255.0f + 0.5f; m = (int) k; if (m > 255) m = 255; result->pixels[j*result->stride + i] = (unsigned char) m; } } /* advance all the edges */ step = &active; while (*step) { struct nk_tt__active_edge *z = *step; z->fx += z->fdx; /* advance to position for current scanline */ step = &((*step)->next); /* advance through list */ } ++y; ++j; } nk_tt__hheap_cleanup(&hh); if (scanline != scanline_data) alloc->free(alloc->userdata, scanline); } NK_INTERN void nk_tt__sort_edges_ins_sort(struct nk_tt__edge *p, int n) { int i,j; #define NK_TT__COMPARE(a,b) ((a)->y0 < (b)->y0) for (i=1; i < n; ++i) { struct nk_tt__edge t = p[i], *a = &t; j = i; while (j > 0) { struct nk_tt__edge *b = &p[j-1]; int c = NK_TT__COMPARE(a,b); if (!c) break; p[j] = p[j-1]; --j; } if (i != j) p[j] = t; } } NK_INTERN void nk_tt__sort_edges_quicksort(struct nk_tt__edge *p, int n) { /* threshold for transitioning to insertion sort */ while (n > 12) { struct nk_tt__edge t; int c01,c12,c,m,i,j; /* compute median of three */ m = n >> 1; c01 = NK_TT__COMPARE(&p[0],&p[m]); c12 = NK_TT__COMPARE(&p[m],&p[n-1]); /* if 0 >= mid >= end, or 0 < mid < end, then use mid */ if (c01 != c12) { /* otherwise, we'll need to swap something else to middle */ int z; c = NK_TT__COMPARE(&p[0],&p[n-1]); /* 0>mid && midn => n; 0 0 */ /* 0n: 0>n => 0; 0 n */ z = (c == c12) ? 0 : n-1; t = p[z]; p[z] = p[m]; p[m] = t; } /* now p[m] is the median-of-three */ /* swap it to the beginning so it won't move around */ t = p[0]; p[0] = p[m]; p[m] = t; /* partition loop */ i=1; j=n-1; for(;;) { /* handling of equality is crucial here */ /* for sentinels & efficiency with duplicates */ for (;;++i) { if (!NK_TT__COMPARE(&p[i], &p[0])) break; } for (;;--j) { if (!NK_TT__COMPARE(&p[0], &p[j])) break; } /* make sure we haven't crossed */ if (i >= j) break; t = p[i]; p[i] = p[j]; p[j] = t; ++i; --j; } /* recurse on smaller side, iterate on larger */ if (j < (n-i)) { nk_tt__sort_edges_quicksort(p,j); p = p+i; n = n-i; } else { nk_tt__sort_edges_quicksort(p+i, n-i); n = j; } } } NK_INTERN void nk_tt__sort_edges(struct nk_tt__edge *p, int n) { nk_tt__sort_edges_quicksort(p, n); nk_tt__sort_edges_ins_sort(p, n); } NK_INTERN void nk_tt__rasterize(struct nk_tt__bitmap *result, struct nk_tt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, struct nk_allocator *alloc) { float y_scale_inv = invert ? -scale_y : scale_y; struct nk_tt__edge *e; int n,i,j,k,m; int vsubsample = 1; /* vsubsample should divide 255 evenly; otherwise we won't reach full opacity */ /* now we have to blow out the windings into explicit edge lists */ n = 0; for (i=0; i < windings; ++i) n += wcount[i]; e = (struct nk_tt__edge*) alloc->alloc(alloc->userdata, 0,(sizeof(*e) * (nk_size)(n+1))); if (e == 0) return; n = 0; m=0; for (i=0; i < windings; ++i) { struct nk_tt__point *p = pts + m; m += wcount[i]; j = wcount[i]-1; for (k=0; k < wcount[i]; j=k++) { int a=k,b=j; /* skip the edge if horizontal */ if (p[j].y == p[k].y) continue; /* add edge from j to k to the list */ e[n].invert = 0; if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) { e[n].invert = 1; a=j,b=k; } e[n].x0 = p[a].x * scale_x + shift_x; e[n].y0 = (p[a].y * y_scale_inv + shift_y) * (float)vsubsample; e[n].x1 = p[b].x * scale_x + shift_x; e[n].y1 = (p[b].y * y_scale_inv + shift_y) * (float)vsubsample; ++n; } } /* now sort the edges by their highest point (should snap to integer, and then by x) */ /*STBTT_sort(e, n, sizeof(e[0]), nk_tt__edge_compare); */ nk_tt__sort_edges(e, n); /* now, traverse the scanlines and find the intersections on each scanline, use xor winding rule */ nk_tt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, alloc); alloc->free(alloc->userdata, e); } NK_INTERN void nk_tt__add_point(struct nk_tt__point *points, int n, float x, float y) { if (!points) return; /* during first pass, it's unallocated */ points[n].x = x; points[n].y = y; } NK_INTERN int nk_tt__tesselate_curve(struct nk_tt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n) { /* tesselate until threshold p is happy... * @TODO warped to compensate for non-linear stretching */ /* midpoint */ float mx = (x0 + 2*x1 + x2)/4; float my = (y0 + 2*y1 + y2)/4; /* versus directly drawn line */ float dx = (x0+x2)/2 - mx; float dy = (y0+y2)/2 - my; if (n > 16) /* 65536 segments on one curve better be enough! */ return 1; /* half-pixel error allowed... need to be smaller if AA */ if (dx*dx+dy*dy > objspace_flatness_squared) { nk_tt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1); nk_tt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1); } else { nk_tt__add_point(points, *num_points,x2,y2); *num_points = *num_points+1; } return 1; } NK_INTERN struct nk_tt__point* nk_tt_FlattenCurves(struct nk_tt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, struct nk_allocator *alloc) { /* returns number of contours */ struct nk_tt__point *points=0; int num_points=0; float objspace_flatness_squared = objspace_flatness * objspace_flatness; int i; int n=0; int start=0; int pass; /* count how many "moves" there are to get the contour count */ for (i=0; i < num_verts; ++i) if (vertices[i].type == NK_TT_vmove) ++n; *num_contours = n; if (n == 0) return 0; *contour_lengths = (int *) alloc->alloc(alloc->userdata,0, (sizeof(**contour_lengths) * (nk_size)n)); if (*contour_lengths == 0) { *num_contours = 0; return 0; } /* make two passes through the points so we don't need to realloc */ for (pass=0; pass < 2; ++pass) { float x=0,y=0; if (pass == 1) { points = (struct nk_tt__point *) alloc->alloc(alloc->userdata,0, (nk_size)num_points * sizeof(points[0])); if (points == 0) goto error; } num_points = 0; n= -1; for (i=0; i < num_verts; ++i) { switch (vertices[i].type) { case NK_TT_vmove: /* start the next contour */ if (n >= 0) (*contour_lengths)[n] = num_points - start; ++n; start = num_points; x = vertices[i].x, y = vertices[i].y; nk_tt__add_point(points, num_points++, x,y); break; case NK_TT_vline: x = vertices[i].x, y = vertices[i].y; nk_tt__add_point(points, num_points++, x, y); break; case NK_TT_vcurve: nk_tt__tesselate_curve(points, &num_points, x,y, vertices[i].cx, vertices[i].cy, vertices[i].x, vertices[i].y, objspace_flatness_squared, 0); x = vertices[i].x, y = vertices[i].y; break; default: break; } } (*contour_lengths)[n] = num_points - start; } return points; error: alloc->free(alloc->userdata, points); alloc->free(alloc->userdata, *contour_lengths); *contour_lengths = 0; *num_contours = 0; return 0; } NK_INTERN void nk_tt_Rasterize(struct nk_tt__bitmap *result, float flatness_in_pixels, struct nk_tt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, struct nk_allocator *alloc) { float scale = scale_x > scale_y ? scale_y : scale_x; int winding_count, *winding_lengths; struct nk_tt__point *windings = nk_tt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, alloc); NK_ASSERT(alloc); if (windings) { nk_tt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, alloc); alloc->free(alloc->userdata, winding_lengths); alloc->free(alloc->userdata, windings); } } NK_INTERN void nk_tt_MakeGlyphBitmapSubpixel(const struct nk_tt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, struct nk_allocator *alloc) { int ix0,iy0; struct nk_tt_vertex *vertices; int num_verts = nk_tt_GetGlyphShape(info, alloc, glyph, &vertices); struct nk_tt__bitmap gbm; nk_tt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0); gbm.pixels = output; gbm.w = out_w; gbm.h = out_h; gbm.stride = out_stride; if (gbm.w && gbm.h) nk_tt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, alloc); alloc->free(alloc->userdata, vertices); } /*------------------------------------------------------------- * Bitmap baking * --------------------------------------------------------------*/ NK_INTERN int nk_tt_PackBegin(struct nk_tt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, struct nk_allocator *alloc) { int num_nodes = pw - padding; struct nk_rp_context *context = (struct nk_rp_context *) alloc->alloc(alloc->userdata,0, sizeof(*context)); struct nk_rp_node *nodes = (struct nk_rp_node*) alloc->alloc(alloc->userdata,0, (sizeof(*nodes ) * (nk_size)num_nodes)); if (context == 0 || nodes == 0) { if (context != 0) alloc->free(alloc->userdata, context); if (nodes != 0) alloc->free(alloc->userdata, nodes); return 0; } spc->width = pw; spc->height = ph; spc->pixels = pixels; spc->pack_info = context; spc->nodes = nodes; spc->padding = padding; spc->stride_in_bytes = (stride_in_bytes != 0) ? stride_in_bytes : pw; spc->h_oversample = 1; spc->v_oversample = 1; nk_rp_init_target(context, pw-padding, ph-padding, nodes, num_nodes); if (pixels) NK_MEMSET(pixels, 0, (nk_size)(pw*ph)); /* background of 0 around pixels */ return 1; } NK_INTERN void nk_tt_PackEnd(struct nk_tt_pack_context *spc, struct nk_allocator *alloc) { alloc->free(alloc->userdata, spc->nodes); alloc->free(alloc->userdata, spc->pack_info); } NK_INTERN void nk_tt_PackSetOversampling(struct nk_tt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample) { NK_ASSERT(h_oversample <= NK_TT_MAX_OVERSAMPLE); NK_ASSERT(v_oversample <= NK_TT_MAX_OVERSAMPLE); if (h_oversample <= NK_TT_MAX_OVERSAMPLE) spc->h_oversample = h_oversample; if (v_oversample <= NK_TT_MAX_OVERSAMPLE) spc->v_oversample = v_oversample; } NK_INTERN void nk_tt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, int kernel_width) { unsigned char buffer[NK_TT_MAX_OVERSAMPLE]; int safe_w = w - kernel_width; int j; for (j=0; j < h; ++j) { int i; unsigned int total; NK_MEMSET(buffer, 0, (nk_size)kernel_width); total = 0; /* make kernel_width a constant in common cases so compiler can optimize out the divide */ switch (kernel_width) { case 2: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 2); } break; case 3: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 3); } break; case 4: for (i=0; i <= safe_w; ++i) { total += (unsigned int)pixels[i] - buffer[i & NK_TT__OVER_MASK]; buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 4); } break; case 5: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 5); } break; default: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / (unsigned int)kernel_width); } break; } for (; i < w; ++i) { NK_ASSERT(pixels[i] == 0); total -= (unsigned int)(buffer[i & NK_TT__OVER_MASK]); pixels[i] = (unsigned char) (total / (unsigned int)kernel_width); } pixels += stride_in_bytes; } } NK_INTERN void nk_tt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, int kernel_width) { unsigned char buffer[NK_TT_MAX_OVERSAMPLE]; int safe_h = h - kernel_width; int j; for (j=0; j < w; ++j) { int i; unsigned int total; NK_MEMSET(buffer, 0, (nk_size)kernel_width); total = 0; /* make kernel_width a constant in common cases so compiler can optimize out the divide */ switch (kernel_width) { case 2: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 2); } break; case 3: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 3); } break; case 4: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 4); } break; case 5: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 5); } break; default: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / (unsigned int)kernel_width); } break; } for (; i < h; ++i) { NK_ASSERT(pixels[i*stride_in_bytes] == 0); total -= (unsigned int)(buffer[i & NK_TT__OVER_MASK]); pixels[i*stride_in_bytes] = (unsigned char) (total / (unsigned int)kernel_width); } pixels += 1; } } NK_INTERN float nk_tt__oversample_shift(int oversample) { if (!oversample) return 0.0f; /* The prefilter is a box filter of width "oversample", */ /* which shifts phase by (oversample - 1)/2 pixels in */ /* oversampled space. We want to shift in the opposite */ /* direction to counter this. */ return (float)-(oversample - 1) / (2.0f * (float)oversample); } NK_INTERN int nk_tt_PackFontRangesGatherRects(struct nk_tt_pack_context *spc, struct nk_tt_fontinfo *info, struct nk_tt_pack_range *ranges, int num_ranges, struct nk_rp_rect *rects) { /* rects array must be big enough to accommodate all characters in the given ranges */ int i,j,k; k = 0; for (i=0; i < num_ranges; ++i) { float fh = ranges[i].font_size; float scale = (fh > 0) ? nk_tt_ScaleForPixelHeight(info, fh): nk_tt_ScaleForMappingEmToPixels(info, -fh); ranges[i].h_oversample = (unsigned char) spc->h_oversample; ranges[i].v_oversample = (unsigned char) spc->v_oversample; for (j=0; j < ranges[i].num_chars; ++j) { int x0,y0,x1,y1; int codepoint = ranges[i].first_unicode_codepoint_in_range ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; int glyph = nk_tt_FindGlyphIndex(info, codepoint); nk_tt_GetGlyphBitmapBoxSubpixel(info,glyph, scale * (float)spc->h_oversample, scale * (float)spc->v_oversample, 0,0, &x0,&y0,&x1,&y1); rects[k].w = (nk_rp_coord) (x1-x0 + spc->padding + (int)spc->h_oversample-1); rects[k].h = (nk_rp_coord) (y1-y0 + spc->padding + (int)spc->v_oversample-1); ++k; } } return k; } NK_INTERN int nk_tt_PackFontRangesRenderIntoRects(struct nk_tt_pack_context *spc, struct nk_tt_fontinfo *info, struct nk_tt_pack_range *ranges, int num_ranges, struct nk_rp_rect *rects, struct nk_allocator *alloc) { int i,j,k, return_value = 1; /* save current values */ int old_h_over = (int)spc->h_oversample; int old_v_over = (int)spc->v_oversample; /* rects array must be big enough to accommodate all characters in the given ranges */ k = 0; for (i=0; i < num_ranges; ++i) { float fh = ranges[i].font_size; float recip_h,recip_v,sub_x,sub_y; float scale = fh > 0 ? nk_tt_ScaleForPixelHeight(info, fh): nk_tt_ScaleForMappingEmToPixels(info, -fh); spc->h_oversample = ranges[i].h_oversample; spc->v_oversample = ranges[i].v_oversample; recip_h = 1.0f / (float)spc->h_oversample; recip_v = 1.0f / (float)spc->v_oversample; sub_x = nk_tt__oversample_shift((int)spc->h_oversample); sub_y = nk_tt__oversample_shift((int)spc->v_oversample); for (j=0; j < ranges[i].num_chars; ++j) { struct nk_rp_rect *r = &rects[k]; if (r->was_packed) { struct nk_tt_packedchar *bc = &ranges[i].chardata_for_range[j]; int advance, lsb, x0,y0,x1,y1; int codepoint = ranges[i].first_unicode_codepoint_in_range ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; int glyph = nk_tt_FindGlyphIndex(info, codepoint); nk_rp_coord pad = (nk_rp_coord) spc->padding; /* pad on left and top */ r->x = (nk_rp_coord)((int)r->x + (int)pad); r->y = (nk_rp_coord)((int)r->y + (int)pad); r->w = (nk_rp_coord)((int)r->w - (int)pad); r->h = (nk_rp_coord)((int)r->h - (int)pad); nk_tt_GetGlyphHMetrics(info, glyph, &advance, &lsb); nk_tt_GetGlyphBitmapBox(info, glyph, scale * (float)spc->h_oversample, (scale * (float)spc->v_oversample), &x0,&y0,&x1,&y1); nk_tt_MakeGlyphBitmapSubpixel(info, spc->pixels + r->x + r->y*spc->stride_in_bytes, (int)(r->w - spc->h_oversample+1), (int)(r->h - spc->v_oversample+1), spc->stride_in_bytes, scale * (float)spc->h_oversample, scale * (float)spc->v_oversample, 0,0, glyph, alloc); if (spc->h_oversample > 1) nk_tt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, r->w, r->h, spc->stride_in_bytes, (int)spc->h_oversample); if (spc->v_oversample > 1) nk_tt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, r->w, r->h, spc->stride_in_bytes, (int)spc->v_oversample); bc->x0 = (nk_ushort) r->x; bc->y0 = (nk_ushort) r->y; bc->x1 = (nk_ushort) (r->x + r->w); bc->y1 = (nk_ushort) (r->y + r->h); bc->xadvance = scale * (float)advance; bc->xoff = (float) x0 * recip_h + sub_x; bc->yoff = (float) y0 * recip_v + sub_y; bc->xoff2 = ((float)x0 + r->w) * recip_h + sub_x; bc->yoff2 = ((float)y0 + r->h) * recip_v + sub_y; } else { return_value = 0; /* if any fail, report failure */ } ++k; } } /* restore original values */ spc->h_oversample = (unsigned int)old_h_over; spc->v_oversample = (unsigned int)old_v_over; return return_value; } NK_INTERN void nk_tt_GetPackedQuad(struct nk_tt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, struct nk_tt_aligned_quad *q, int align_to_integer) { float ipw = 1.0f / (float)pw, iph = 1.0f / (float)ph; struct nk_tt_packedchar *b = (struct nk_tt_packedchar*)(chardata + char_index); if (align_to_integer) { int tx = nk_ifloorf((*xpos + b->xoff) + 0.5f); int ty = nk_ifloorf((*ypos + b->yoff) + 0.5f); float x = (float)tx; float y = (float)ty; q->x0 = x; q->y0 = y; q->x1 = x + b->xoff2 - b->xoff; q->y1 = y + b->yoff2 - b->yoff; } else { q->x0 = *xpos + b->xoff; q->y0 = *ypos + b->yoff; q->x1 = *xpos + b->xoff2; q->y1 = *ypos + b->yoff2; } q->s0 = b->x0 * ipw; q->t0 = b->y0 * iph; q->s1 = b->x1 * ipw; q->t1 = b->y1 * iph; *xpos += b->xadvance; } /* ------------------------------------------------------------- * * FONT BAKING * * --------------------------------------------------------------*/ struct nk_font_bake_data { struct nk_tt_fontinfo info; struct nk_rp_rect *rects; struct nk_tt_pack_range *ranges; nk_rune range_count; }; struct nk_font_baker { struct nk_allocator alloc; struct nk_tt_pack_context spc; struct nk_font_bake_data *build; struct nk_tt_packedchar *packed_chars; struct nk_rp_rect *rects; struct nk_tt_pack_range *ranges; }; NK_GLOBAL const nk_size nk_rect_align = NK_ALIGNOF(struct nk_rp_rect); NK_GLOBAL const nk_size nk_range_align = NK_ALIGNOF(struct nk_tt_pack_range); NK_GLOBAL const nk_size nk_char_align = NK_ALIGNOF(struct nk_tt_packedchar); NK_GLOBAL const nk_size nk_build_align = NK_ALIGNOF(struct nk_font_bake_data); NK_GLOBAL const nk_size nk_baker_align = NK_ALIGNOF(struct nk_font_baker); NK_INTERN int nk_range_count(const nk_rune *range) { const nk_rune *iter = range; NK_ASSERT(range); if (!range) return 0; while (*(iter++) != 0); return (iter == range) ? 0 : (int)((iter - range)/2); } NK_INTERN int nk_range_glyph_count(const nk_rune *range, int count) { int i = 0; int total_glyphs = 0; for (i = 0; i < count; ++i) { int diff; nk_rune f = range[(i*2)+0]; nk_rune t = range[(i*2)+1]; NK_ASSERT(t >= f); diff = (int)((t - f) + 1); total_glyphs += diff; } return total_glyphs; } NK_API const nk_rune* nk_font_default_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = {0x0020, 0x00FF, 0}; return ranges; } NK_API const nk_rune* nk_font_chinese_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x3000, 0x30FF, 0x31F0, 0x31FF, 0xFF00, 0xFFEF, 0x4e00, 0x9FAF, 0 }; return ranges; } NK_API const nk_rune* nk_font_cyrillic_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x0400, 0x052F, 0x2DE0, 0x2DFF, 0xA640, 0xA69F, 0 }; return ranges; } NK_API const nk_rune* nk_font_korean_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x3131, 0x3163, 0xAC00, 0xD79D, 0 }; return ranges; } NK_INTERN void nk_font_baker_memory(nk_size *temp, int *glyph_count, struct nk_font_config *config_list, int count) { int range_count = 0; int total_range_count = 0; struct nk_font_config *iter, *i; NK_ASSERT(config_list); NK_ASSERT(glyph_count); if (!config_list) { *temp = 0; *glyph_count = 0; return; } *glyph_count = 0; for (iter = config_list; iter; iter = iter->next) { i = iter; do {if (!i->range) iter->range = nk_font_default_glyph_ranges(); range_count = nk_range_count(i->range); total_range_count += range_count; *glyph_count += nk_range_glyph_count(i->range, range_count); } while ((i = i->n) != iter); } *temp = (nk_size)*glyph_count * sizeof(struct nk_rp_rect); *temp += (nk_size)total_range_count * sizeof(struct nk_tt_pack_range); *temp += (nk_size)*glyph_count * sizeof(struct nk_tt_packedchar); *temp += (nk_size)count * sizeof(struct nk_font_bake_data); *temp += sizeof(struct nk_font_baker); *temp += nk_rect_align + nk_range_align + nk_char_align; *temp += nk_build_align + nk_baker_align; } NK_INTERN struct nk_font_baker* nk_font_baker(void *memory, int glyph_count, int count, struct nk_allocator *alloc) { struct nk_font_baker *baker; if (!memory) return 0; /* setup baker inside a memory block */ baker = (struct nk_font_baker*)NK_ALIGN_PTR(memory, nk_baker_align); baker->build = (struct nk_font_bake_data*)NK_ALIGN_PTR((baker + 1), nk_build_align); baker->packed_chars = (struct nk_tt_packedchar*)NK_ALIGN_PTR((baker->build + count), nk_char_align); baker->rects = (struct nk_rp_rect*)NK_ALIGN_PTR((baker->packed_chars + glyph_count), nk_rect_align); baker->ranges = (struct nk_tt_pack_range*)NK_ALIGN_PTR((baker->rects + glyph_count), nk_range_align); baker->alloc = *alloc; return baker; } NK_INTERN int nk_font_bake_pack(struct nk_font_baker *baker, nk_size *image_memory, int *width, int *height, struct nk_recti *custom, const struct nk_font_config *config_list, int count, struct nk_allocator *alloc) { NK_STORAGE const nk_size max_height = 1024 * 32; const struct nk_font_config *config_iter, *it; int total_glyph_count = 0; int total_range_count = 0; int range_count = 0; int i = 0; NK_ASSERT(image_memory); NK_ASSERT(width); NK_ASSERT(height); NK_ASSERT(config_list); NK_ASSERT(count); NK_ASSERT(alloc); if (!image_memory || !width || !height || !config_list || !count) return nk_false; for (config_iter = config_list; config_iter; config_iter = config_iter->next) { it = config_iter; do {range_count = nk_range_count(it->range); total_range_count += range_count; total_glyph_count += nk_range_glyph_count(it->range, range_count); } while ((it = it->n) != config_iter); } /* setup font baker from temporary memory */ for (config_iter = config_list; config_iter; config_iter = config_iter->next) { it = config_iter; do {if (!nk_tt_InitFont(&baker->build[i++].info, (const unsigned char*)it->ttf_blob, 0)) return nk_false; } while ((it = it->n) != config_iter); } *height = 0; *width = (total_glyph_count > 1000) ? 1024 : 512; nk_tt_PackBegin(&baker->spc, 0, (int)*width, (int)max_height, 0, 1, alloc); { int input_i = 0; int range_n = 0; int rect_n = 0; int char_n = 0; if (custom) { /* pack custom user data first so it will be in the upper left corner*/ struct nk_rp_rect custom_space; nk_zero(&custom_space, sizeof(custom_space)); custom_space.w = (nk_rp_coord)(custom->w); custom_space.h = (nk_rp_coord)(custom->h); nk_tt_PackSetOversampling(&baker->spc, 1, 1); nk_rp_pack_rects((struct nk_rp_context*)baker->spc.pack_info, &custom_space, 1); *height = NK_MAX(*height, (int)(custom_space.y + custom_space.h)); custom->x = (short)custom_space.x; custom->y = (short)custom_space.y; custom->w = (short)custom_space.w; custom->h = (short)custom_space.h; } /* first font pass: pack all glyphs */ for (input_i = 0, config_iter = config_list; input_i < count && config_iter; config_iter = config_iter->next) { it = config_iter; do {int n = 0; int glyph_count; const nk_rune *in_range; const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; /* count glyphs + ranges in current font */ glyph_count = 0; range_count = 0; for (in_range = cfg->range; in_range[0] && in_range[1]; in_range += 2) { glyph_count += (int)(in_range[1] - in_range[0]) + 1; range_count++; } /* setup ranges */ tmp->ranges = baker->ranges + range_n; tmp->range_count = (nk_rune)range_count; range_n += range_count; for (i = 0; i < range_count; ++i) { in_range = &cfg->range[i * 2]; tmp->ranges[i].font_size = cfg->size; tmp->ranges[i].first_unicode_codepoint_in_range = (int)in_range[0]; tmp->ranges[i].num_chars = (int)(in_range[1]- in_range[0]) + 1; tmp->ranges[i].chardata_for_range = baker->packed_chars + char_n; char_n += tmp->ranges[i].num_chars; } /* pack */ tmp->rects = baker->rects + rect_n; rect_n += glyph_count; nk_tt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v); n = nk_tt_PackFontRangesGatherRects(&baker->spc, &tmp->info, tmp->ranges, (int)tmp->range_count, tmp->rects); nk_rp_pack_rects((struct nk_rp_context*)baker->spc.pack_info, tmp->rects, (int)n); /* texture height */ for (i = 0; i < n; ++i) { if (tmp->rects[i].was_packed) *height = NK_MAX(*height, tmp->rects[i].y + tmp->rects[i].h); } } while ((it = it->n) != config_iter); } NK_ASSERT(rect_n == total_glyph_count); NK_ASSERT(char_n == total_glyph_count); NK_ASSERT(range_n == total_range_count); } *height = (int)nk_round_up_pow2((nk_uint)*height); *image_memory = (nk_size)(*width) * (nk_size)(*height); return nk_true; } NK_INTERN void nk_font_bake(struct nk_font_baker *baker, void *image_memory, int width, int height, struct nk_font_glyph *glyphs, int glyphs_count, const struct nk_font_config *config_list, int font_count) { int input_i = 0; nk_rune glyph_n = 0; const struct nk_font_config *config_iter; const struct nk_font_config *it; NK_ASSERT(image_memory); NK_ASSERT(width); NK_ASSERT(height); NK_ASSERT(config_list); NK_ASSERT(baker); NK_ASSERT(font_count); NK_ASSERT(glyphs_count); if (!image_memory || !width || !height || !config_list || !font_count || !glyphs || !glyphs_count) return; /* second font pass: render glyphs */ nk_zero(image_memory, (nk_size)((nk_size)width * (nk_size)height)); baker->spc.pixels = (unsigned char*)image_memory; baker->spc.height = (int)height; for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter; config_iter = config_iter->next) { it = config_iter; do {const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; nk_tt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v); nk_tt_PackFontRangesRenderIntoRects(&baker->spc, &tmp->info, tmp->ranges, (int)tmp->range_count, tmp->rects, &baker->alloc); } while ((it = it->n) != config_iter); } nk_tt_PackEnd(&baker->spc, &baker->alloc); /* third pass: setup font and glyphs */ for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter; config_iter = config_iter->next) { it = config_iter; do {nk_size i = 0; int char_idx = 0; nk_rune glyph_count = 0; const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; struct nk_baked_font *dst_font = cfg->font; float font_scale = nk_tt_ScaleForPixelHeight(&tmp->info, cfg->size); int unscaled_ascent, unscaled_descent, unscaled_line_gap; nk_tt_GetFontVMetrics(&tmp->info, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap); /* fill baked font */ if (!cfg->merge_mode) { dst_font->ranges = cfg->range; dst_font->height = cfg->size; dst_font->ascent = ((float)unscaled_ascent * font_scale); dst_font->descent = ((float)unscaled_descent * font_scale); dst_font->glyph_offset = glyph_n; // Need to zero this, or it will carry over from a previous // bake, and cause a segfault when accessing glyphs[]. dst_font->glyph_count = 0; } /* fill own baked font glyph array */ for (i = 0; i < tmp->range_count; ++i) { struct nk_tt_pack_range *range = &tmp->ranges[i]; for (char_idx = 0; char_idx < range->num_chars; char_idx++) { nk_rune codepoint = 0; float dummy_x = 0, dummy_y = 0; struct nk_tt_aligned_quad q; struct nk_font_glyph *glyph; /* query glyph bounds from stb_truetype */ const struct nk_tt_packedchar *pc = &range->chardata_for_range[char_idx]; if (!pc->x0 && !pc->x1 && !pc->y0 && !pc->y1) continue; codepoint = (nk_rune)(range->first_unicode_codepoint_in_range + char_idx); nk_tt_GetPackedQuad(range->chardata_for_range, (int)width, (int)height, char_idx, &dummy_x, &dummy_y, &q, 0); /* fill own glyph type with data */ glyph = &glyphs[dst_font->glyph_offset + dst_font->glyph_count + (unsigned int)glyph_count]; glyph->codepoint = codepoint; glyph->x0 = q.x0; glyph->y0 = q.y0; glyph->x1 = q.x1; glyph->y1 = q.y1; glyph->y0 += (dst_font->ascent + 0.5f); glyph->y1 += (dst_font->ascent + 0.5f); glyph->w = glyph->x1 - glyph->x0 + 0.5f; glyph->h = glyph->y1 - glyph->y0; if (cfg->coord_type == NK_COORD_PIXEL) { glyph->u0 = q.s0 * (float)width; glyph->v0 = q.t0 * (float)height; glyph->u1 = q.s1 * (float)width; glyph->v1 = q.t1 * (float)height; } else { glyph->u0 = q.s0; glyph->v0 = q.t0; glyph->u1 = q.s1; glyph->v1 = q.t1; } glyph->xadvance = (pc->xadvance + cfg->spacing.x); if (cfg->pixel_snap) glyph->xadvance = (float)(int)(glyph->xadvance + 0.5f); glyph_count++; } } dst_font->glyph_count += glyph_count; glyph_n += glyph_count; } while ((it = it->n) != config_iter); } } NK_INTERN void nk_font_bake_custom_data(void *img_memory, int img_width, int img_height, struct nk_recti img_dst, const char *texture_data_mask, int tex_width, int tex_height, char white, char black) { nk_byte *pixels; int y = 0; int x = 0; int n = 0; NK_ASSERT(img_memory); NK_ASSERT(img_width); NK_ASSERT(img_height); NK_ASSERT(texture_data_mask); NK_UNUSED(tex_height); if (!img_memory || !img_width || !img_height || !texture_data_mask) return; pixels = (nk_byte*)img_memory; for (y = 0, n = 0; y < tex_height; ++y) { for (x = 0; x < tex_width; ++x, ++n) { const int off0 = ((img_dst.x + x) + (img_dst.y + y) * img_width); const int off1 = off0 + 1 + tex_width; pixels[off0] = (texture_data_mask[n] == white) ? 0xFF : 0x00; pixels[off1] = (texture_data_mask[n] == black) ? 0xFF : 0x00; } } } NK_INTERN void nk_font_bake_convert(void *out_memory, int img_width, int img_height, const void *in_memory) { int n = 0; nk_rune *dst; const nk_byte *src; NK_ASSERT(out_memory); NK_ASSERT(in_memory); NK_ASSERT(img_width); NK_ASSERT(img_height); if (!out_memory || !in_memory || !img_height || !img_width) return; dst = (nk_rune*)out_memory; src = (const nk_byte*)in_memory; for (n = (int)(img_width * img_height); n > 0; n--) *dst++ = ((nk_rune)(*src++) << 24) | 0x00FFFFFF; } /* ------------------------------------------------------------- * * FONT * * --------------------------------------------------------------*/ NK_INTERN float nk_font_text_width(nk_handle handle, float height, const char *text, int len) { nk_rune unicode; int text_len = 0; float text_width = 0; int glyph_len = 0; float scale = 0; struct nk_font *font = (struct nk_font*)handle.ptr; NK_ASSERT(font); NK_ASSERT(font->glyphs); if (!font || !text || !len) return 0; scale = height/font->info.height; glyph_len = text_len = nk_utf_decode(text, &unicode, (int)len); if (!glyph_len) return 0; while (text_len <= (int)len && glyph_len) { const struct nk_font_glyph *g; if (unicode == NK_UTF_INVALID) break; /* query currently drawn glyph information */ g = nk_font_find_glyph(font, unicode); text_width += g->xadvance * scale; /* offset next glyph */ glyph_len = nk_utf_decode(text + text_len, &unicode, (int)len - text_len); text_len += glyph_len; } return text_width; } #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT NK_INTERN void nk_font_query_font_glyph(nk_handle handle, float height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint) { float scale; const struct nk_font_glyph *g; struct nk_font *font; NK_ASSERT(glyph); NK_UNUSED(next_codepoint); font = (struct nk_font*)handle.ptr; NK_ASSERT(font); NK_ASSERT(font->glyphs); if (!font || !glyph) return; scale = height/font->info.height; g = nk_font_find_glyph(font, codepoint); glyph->width = (g->x1 - g->x0) * scale; glyph->height = (g->y1 - g->y0) * scale; glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale); glyph->xadvance = (g->xadvance * scale); glyph->uv[0] = nk_vec2(g->u0, g->v0); glyph->uv[1] = nk_vec2(g->u1, g->v1); } #endif NK_API const struct nk_font_glyph* nk_font_find_glyph(struct nk_font *font, nk_rune unicode) { int i = 0; int count; int total_glyphs = 0; const struct nk_font_glyph *glyph = 0; const struct nk_font_config *iter = 0; NK_ASSERT(font); NK_ASSERT(font->glyphs); NK_ASSERT(font->info.ranges); if (!font || !font->glyphs) return 0; glyph = font->fallback; iter = font->config; do {count = nk_range_count(iter->range); for (i = 0; i < count; ++i) { nk_rune f = iter->range[(i*2)+0]; nk_rune t = iter->range[(i*2)+1]; int diff = (int)((t - f) + 1); if (unicode >= f && unicode <= t) return &font->glyphs[((nk_rune)total_glyphs + (unicode - f))]; total_glyphs += diff; } } while ((iter = iter->n) != font->config); return glyph; } NK_INTERN void nk_font_init(struct nk_font *font, float pixel_height, nk_rune fallback_codepoint, struct nk_font_glyph *glyphs, const struct nk_baked_font *baked_font, nk_handle atlas) { struct nk_baked_font baked; NK_ASSERT(font); NK_ASSERT(glyphs); NK_ASSERT(baked_font); if (!font || !glyphs || !baked_font) return; baked = *baked_font; font->fallback = 0; font->info = baked; font->scale = (float)pixel_height / (float)font->info.height; font->glyphs = &glyphs[baked_font->glyph_offset]; font->texture = atlas; font->fallback_codepoint = fallback_codepoint; font->fallback = nk_font_find_glyph(font, fallback_codepoint); font->handle.height = font->info.height * font->scale; font->handle.width = nk_font_text_width; font->handle.userdata.ptr = font; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT font->handle.query = nk_font_query_font_glyph; font->handle.texture = font->texture; #endif } /* --------------------------------------------------------------------------- * * DEFAULT FONT * * ProggyClean.ttf * Copyright (c) 2004, 2005 Tristan Grimmer * MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip) * Download and more information at http://upperbounds.net *-----------------------------------------------------------------------------*/ #ifdef __clang__ #pragma clang diagnostic push #pragma clang diagnostic ignored "-Woverlength-strings" #elif defined(__GNUC__) || defined(__GNUG__) #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Woverlength-strings" #endif #ifdef NK_INCLUDE_DEFAULT_FONT NK_GLOBAL const char nk_proggy_clean_ttf_compressed_data_base85[11980+1] = "7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/" "2*>]b(MC;$jPfY.;h^`IWM9Qo#t'X#(v#Y9w0#1D$CIf;W'#pWUPXOuxXuU(H9M(1=Ke$$'5F%)]0^#0X@U.a$FBjVQTSDgEKnIS7EM9>ZY9w0#L;>>#Mx&4Mvt//L[MkA#W@lK.N'[0#7RL_&#w+F%HtG9M#XL`N&.,GM4Pg;--VsM.M0rJfLH2eTM`*oJMHRC`N" "kfimM2J,W-jXS:)r0wK#@Fge$U>`w'N7G#$#fB#$E^$#:9:hk+eOe--6x)F7*E%?76%^GMHePW-Z5l'&GiF#$956:rS?dA#fiK:)Yr+`�j@'DbG&#^$PG.Ll+DNa&VZ>1i%h1S9u5o@YaaW$e+bROPOpxTO7Stwi1::iB1q)C_=dV26J;2,]7op$]uQr@_V7$q^%lQwtuHY]=DX,n3L#0PHDO4f9>dC@O>HBuKPpP*E,N+b3L#lpR/MrTEH.IAQk.a>D[.e;mc." 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"URQ##V^Fv-XFbGM7Fl(N<3DhLGF%q.1rC$#:T__&Pi68%0xi_&[qFJ(77j_&JWoF.V735&T,[R*:xFR*K5>>#`bW-?4Ne_&6Ne_&6Ne_&n`kr-#GJcM6X;uM6X;uM(.a..^2TkL%oR(#" ";u.T%fAr%4tJ8&><1=GHZ_+m9/#H1F^R#SC#*N=BA9(D?v[UiFY>>^8p,KKF.W]L29uLkLlu/+4T" "w$)F./^n3+rlo+DB;5sIYGNk+i1t-69Jg--0pao7Sm#K)pdHW&;LuDNH@H>#/X-TI(;P>#,Gc>#0Su>#4`1?#8lC?#xL$#B.`$#F:r$#JF.%#NR@%#R_R%#Vke%#Zww%#_-4^Rh%Sflr-k'MS.o?.5/sWel/wpEM0%3'/1)K^f1-d>G21&v(35>V`39V7A4=onx4" "A1OY5EI0;6Ibgr6M$HS7Q<)58C5w,;WoA*#[%T*#`1g*#d=#+#hI5+#lUG+#pbY+#tnl+#x$),#&1;,#*=M,#.I`,#2Ur,#6b.-#;w[H#iQtA#m^0B#qjBB#uvTB##-hB#'9$C#+E6C#" "/QHC#3^ZC#7jmC#;v)D#?,)4kMYD4lVu`4m`:&5niUA5@(A5BA1]PBB:xlBCC=2CDLXMCEUtiCf&0g2'tN?PGT4CPGT4CPGT4CPGT4CPGT4CPGT4CPGT4CP" "GT4CPGT4CPGT4CPGT4CPGT4CPGT4CP-qekC`.9kEg^+F$kwViFJTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5o,^<-28ZI'O?;xp" "O?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xp;7q-#lLYI:xvD=#"; #endif /* NK_INCLUDE_DEFAULT_FONT */ #define NK_CURSOR_DATA_W 90 #define NK_CURSOR_DATA_H 27 NK_GLOBAL const char nk_custom_cursor_data[NK_CURSOR_DATA_W * NK_CURSOR_DATA_H + 1] = { "..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX" "..- -X.....X- X.X - X.X -X.....X - X.....X" "--- -XXX.XXX- X...X - X...X -X....X - X....X" "X - X.X - X.....X - X.....X -X...X - X...X" "XX - X.X -X.......X- X.......X -X..X.X - X.X..X" "X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X" "X..X - X.X - X.X - X.X -XX X.X - X.X XX" "X...X - X.X - X.X - XX X.X XX - X.X - X.X " "X....X - X.X - X.X - X.X X.X X.X - X.X - X.X " "X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X " "X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X " "X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X " "X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X " "X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X " "X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X " "X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X " "X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX " "X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------" "X.X X..X - -X.......X- X.......X - XX XX - " "XX X..X - - X.....X - X.....X - X.X X.X - " " X..X - X...X - X...X - X..X X..X - " " XX - X.X - X.X - X...XXXXXXXXXXXXX...X - " "------------ - X - X -X.....................X- " " ----------------------------------- X...XXXXXXXXXXXXX...X - " " - X..X X..X - " " - X.X X.X - " " - XX XX - " }; #ifdef __clang__ #pragma clang diagnostic pop #elif defined(__GNUC__) || defined(__GNUG__) #pragma GCC diagnostic pop #endif NK_GLOBAL unsigned char *nk__barrier; NK_GLOBAL unsigned char *nk__barrier2; NK_GLOBAL unsigned char *nk__barrier3; NK_GLOBAL unsigned char *nk__barrier4; NK_GLOBAL unsigned char *nk__dout; NK_INTERN unsigned int nk_decompress_length(unsigned char *input) { return (unsigned int)((input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11]); } NK_INTERN void nk__match(unsigned char *data, unsigned int length) { /* INVERSE of memmove... write each byte before copying the next...*/ NK_ASSERT (nk__dout + length <= nk__barrier); if (nk__dout + length > nk__barrier) { nk__dout += length; return; } if (data < nk__barrier4) { nk__dout = nk__barrier+1; return; } while (length--) *nk__dout++ = *data++; } NK_INTERN void nk__lit(unsigned char *data, unsigned int length) { NK_ASSERT (nk__dout + length <= nk__barrier); if (nk__dout + length > nk__barrier) { nk__dout += length; return; } if (data < nk__barrier2) { nk__dout = nk__barrier+1; return; } NK_MEMCPY(nk__dout, data, length); nk__dout += length; } NK_INTERN unsigned char* nk_decompress_token(unsigned char *i) { #define nk__in2(x) ((i[x] << 8) + i[(x)+1]) #define nk__in3(x) ((i[x] << 16) + nk__in2((x)+1)) #define nk__in4(x) ((i[x] << 24) + nk__in3((x)+1)) if (*i >= 0x20) { /* use fewer if's for cases that expand small */ if (*i >= 0x80) nk__match(nk__dout-i[1]-1, (unsigned int)i[0] - 0x80 + 1), i += 2; else if (*i >= 0x40) nk__match(nk__dout-(nk__in2(0) - 0x4000 + 1), (unsigned int)i[2]+1), i += 3; else /* *i >= 0x20 */ nk__lit(i+1, (unsigned int)i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1); } else { /* more ifs for cases that expand large, since overhead is amortized */ if (*i >= 0x18) nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x180000 + 1), (unsigned int)i[3]+1), i += 4; else if (*i >= 0x10) nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x100000 + 1), (unsigned int)nk__in2(3)+1), i += 5; else if (*i >= 0x08) nk__lit(i+2, (unsigned int)nk__in2(0) - 0x0800 + 1), i += 2 + (nk__in2(0) - 0x0800 + 1); else if (*i == 0x07) nk__lit(i+3, (unsigned int)nk__in2(1) + 1), i += 3 + (nk__in2(1) + 1); else if (*i == 0x06) nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), i[4]+1u), i += 5; else if (*i == 0x04) nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), (unsigned int)nk__in2(4)+1u), i += 6; } return i; } NK_INTERN unsigned int nk_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen) { const unsigned long ADLER_MOD = 65521; unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; unsigned long blocklen, i; blocklen = buflen % 5552; while (buflen) { for (i=0; i + 7 < blocklen; i += 8) { s1 += buffer[0]; s2 += s1; s1 += buffer[1]; s2 += s1; s1 += buffer[2]; s2 += s1; s1 += buffer[3]; s2 += s1; s1 += buffer[4]; s2 += s1; s1 += buffer[5]; s2 += s1; s1 += buffer[6]; s2 += s1; s1 += buffer[7]; s2 += s1; buffer += 8; } for (; i < blocklen; ++i) { s1 += *buffer++; s2 += s1; } s1 %= ADLER_MOD; s2 %= ADLER_MOD; buflen -= (unsigned int)blocklen; blocklen = 5552; } return (unsigned int)(s2 << 16) + (unsigned int)s1; } NK_INTERN unsigned int nk_decompress(unsigned char *output, unsigned char *i, unsigned int length) { unsigned int olen; if (nk__in4(0) != 0x57bC0000) return 0; if (nk__in4(4) != 0) return 0; /* error! stream is > 4GB */ olen = nk_decompress_length(i); nk__barrier2 = i; nk__barrier3 = i+length; nk__barrier = output + olen; nk__barrier4 = output; i += 16; nk__dout = output; for (;;) { unsigned char *old_i = i; i = nk_decompress_token(i); if (i == old_i) { if (*i == 0x05 && i[1] == 0xfa) { NK_ASSERT(nk__dout == output + olen); if (nk__dout != output + olen) return 0; if (nk_adler32(1, output, olen) != (unsigned int) nk__in4(2)) return 0; return olen; } else { NK_ASSERT(0); /* NOTREACHED */ return 0; } } NK_ASSERT(nk__dout <= output + olen); if (nk__dout > output + olen) return 0; } } NK_INTERN unsigned int nk_decode_85_byte(char c) { return (unsigned int)((c >= '\\') ? c-36 : c-35); } NK_INTERN void nk_decode_85(unsigned char* dst, const unsigned char* src) { while (*src) { unsigned int tmp = nk_decode_85_byte((char)src[0]) + 85 * (nk_decode_85_byte((char)src[1]) + 85 * (nk_decode_85_byte((char)src[2]) + 85 * (nk_decode_85_byte((char)src[3]) + 85 * nk_decode_85_byte((char)src[4])))); /* we can't assume little-endianess. */ dst[0] = (unsigned char)((tmp >> 0) & 0xFF); dst[1] = (unsigned char)((tmp >> 8) & 0xFF); dst[2] = (unsigned char)((tmp >> 16) & 0xFF); dst[3] = (unsigned char)((tmp >> 24) & 0xFF); src += 5; dst += 4; } } /* ------------------------------------------------------------- * * FONT ATLAS * * --------------------------------------------------------------*/ NK_API struct nk_font_config nk_font_config(float pixel_height) { struct nk_font_config cfg; nk_zero_struct(cfg); cfg.ttf_blob = 0; cfg.ttf_size = 0; cfg.ttf_data_owned_by_atlas = 0; cfg.size = pixel_height; cfg.oversample_h = 3; cfg.oversample_v = 1; cfg.pixel_snap = 0; cfg.coord_type = NK_COORD_UV; cfg.spacing = nk_vec2(0,0); cfg.range = nk_font_default_glyph_ranges(); cfg.merge_mode = 0; cfg.fallback_glyph = '?'; cfg.font = 0; cfg.n = 0; return cfg; } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_font_atlas_init_default(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); if (!atlas) return; nk_zero_struct(*atlas); atlas->temporary.userdata.ptr = 0; atlas->temporary.alloc = nk_malloc; atlas->temporary.free = nk_mfree; atlas->permanent.userdata.ptr = 0; atlas->permanent.alloc = nk_malloc; atlas->permanent.free = nk_mfree; } #endif NK_API void nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc) { NK_ASSERT(atlas); NK_ASSERT(alloc); if (!atlas || !alloc) return; nk_zero_struct(*atlas); atlas->permanent = *alloc; atlas->temporary = *alloc; } NK_API void nk_font_atlas_init_custom(struct nk_font_atlas *atlas, struct nk_allocator *permanent, struct nk_allocator *temporary) { NK_ASSERT(atlas); NK_ASSERT(permanent); NK_ASSERT(temporary); if (!atlas || !permanent || !temporary) return; nk_zero_struct(*atlas); atlas->permanent = *permanent; atlas->temporary = *temporary; } NK_API void nk_font_atlas_begin(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc && atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc && atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free || !atlas->temporary.alloc || !atlas->temporary.free) return; if (atlas->glyphs) { atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); atlas->glyphs = 0; } if (atlas->pixel) { atlas->permanent.free(atlas->permanent.userdata, atlas->pixel); atlas->pixel = 0; } } NK_API struct nk_font* nk_font_atlas_add(struct nk_font_atlas *atlas, const struct nk_font_config *config) { struct nk_font *font = 0; struct nk_font_config *cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(config); NK_ASSERT(config->ttf_blob); NK_ASSERT(config->ttf_size); NK_ASSERT(config->size > 0.0f); if (!atlas || !config || !config->ttf_blob || !config->ttf_size || config->size <= 0.0f|| !atlas->permanent.alloc || !atlas->permanent.free || !atlas->temporary.alloc || !atlas->temporary.free) return 0; /* allocate font config */ cfg = (struct nk_font_config*) atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font_config)); NK_MEMCPY(cfg, config, sizeof(*config)); cfg->n = cfg; cfg->p = cfg; if (!config->merge_mode) { /* insert font config into list */ if (!atlas->config) { atlas->config = cfg; cfg->next = 0; } else { struct nk_font_config *i = atlas->config; while (i->next) i = i->next; i->next = cfg; cfg->next = 0; } /* allocate new font */ font = (struct nk_font*) atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font)); NK_ASSERT(font); nk_zero(font, sizeof(*font)); if (!font) return 0; font->config = cfg; /* insert font into list */ if (!atlas->fonts) { atlas->fonts = font; font->next = 0; } else { struct nk_font *i = atlas->fonts; while (i->next) i = i->next; i->next = font; font->next = 0; } cfg->font = &font->info; } else { /* extend previously added font */ struct nk_font *f = 0; struct nk_font_config *c = 0; NK_ASSERT(atlas->font_num); f = atlas->fonts; c = f->config; cfg->font = &f->info; cfg->n = c; cfg->p = c->p; c->p->n = cfg; c->p = cfg; } /* create own copy of .TTF font blob */ if (!config->ttf_data_owned_by_atlas) { cfg->ttf_blob = atlas->permanent.alloc(atlas->permanent.userdata,0, cfg->ttf_size); NK_ASSERT(cfg->ttf_blob); if (!cfg->ttf_blob) { atlas->font_num++; return 0; } NK_MEMCPY(cfg->ttf_blob, config->ttf_blob, cfg->ttf_size); cfg->ttf_data_owned_by_atlas = 1; } atlas->font_num++; return font; } NK_API struct nk_font* nk_font_atlas_add_from_memory(struct nk_font_atlas *atlas, void *memory, nk_size size, float height, const struct nk_font_config *config) { struct nk_font_config cfg; NK_ASSERT(memory); NK_ASSERT(size); NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->temporary.alloc || !atlas->temporary.free || !memory || !size || !atlas->permanent.alloc || !atlas->permanent.free) return 0; cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = memory; cfg.ttf_size = size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 0; return nk_font_atlas_add(atlas, &cfg); } #ifdef NK_INCLUDE_STANDARD_IO NK_API struct nk_font* nk_font_atlas_add_from_file(struct nk_font_atlas *atlas, const char *file_path, float height, const struct nk_font_config *config) { nk_size size; char *memory; struct nk_font_config cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !file_path) return 0; memory = nk_file_load(file_path, &size, &atlas->permanent); if (!memory) return 0; cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = memory; cfg.ttf_size = size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 1; return nk_font_atlas_add(atlas, &cfg); } #endif NK_API struct nk_font* nk_font_atlas_add_compressed(struct nk_font_atlas *atlas, void *compressed_data, nk_size compressed_size, float height, const struct nk_font_config *config) { unsigned int decompressed_size; void *decompressed_data; struct nk_font_config cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(compressed_data); NK_ASSERT(compressed_size); if (!atlas || !compressed_data || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; decompressed_size = nk_decompress_length((unsigned char*)compressed_data); decompressed_data = atlas->permanent.alloc(atlas->permanent.userdata,0,decompressed_size); NK_ASSERT(decompressed_data); if (!decompressed_data) return 0; nk_decompress((unsigned char*)decompressed_data, (unsigned char*)compressed_data, (unsigned int)compressed_size); cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = decompressed_data; cfg.ttf_size = decompressed_size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 1; return nk_font_atlas_add(atlas, &cfg); } NK_API struct nk_font* nk_font_atlas_add_compressed_base85(struct nk_font_atlas *atlas, const char *data_base85, float height, const struct nk_font_config *config) { int compressed_size; void *compressed_data; struct nk_font *font; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(data_base85); if (!atlas || !data_base85 || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; compressed_size = (((int)nk_strlen(data_base85) + 4) / 5) * 4; compressed_data = atlas->temporary.alloc(atlas->temporary.userdata,0, (nk_size)compressed_size); NK_ASSERT(compressed_data); if (!compressed_data) return 0; nk_decode_85((unsigned char*)compressed_data, (const unsigned char*)data_base85); font = nk_font_atlas_add_compressed(atlas, compressed_data, (nk_size)compressed_size, height, config); atlas->temporary.free(atlas->temporary.userdata, compressed_data); return font; } #ifdef NK_INCLUDE_DEFAULT_FONT NK_API struct nk_font* nk_font_atlas_add_default(struct nk_font_atlas *atlas, float pixel_height, const struct nk_font_config *config) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); return nk_font_atlas_add_compressed_base85(atlas, nk_proggy_clean_ttf_compressed_data_base85, pixel_height, config); } #endif NK_API const void* nk_font_atlas_bake(struct nk_font_atlas *atlas, int *width, int *height, enum nk_font_atlas_format fmt) { int i = 0; void *tmp = 0; nk_size tmp_size, img_size; struct nk_font *font_iter; struct nk_font_baker *baker; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(width); NK_ASSERT(height); if (!atlas || !width || !height || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; #ifdef NK_INCLUDE_DEFAULT_FONT /* no font added so just use default font */ if (!atlas->font_num) atlas->default_font = nk_font_atlas_add_default(atlas, 13.0f, 0); #endif NK_ASSERT(atlas->font_num); if (!atlas->font_num) return 0; /* allocate temporary baker memory required for the baking process */ nk_font_baker_memory(&tmp_size, &atlas->glyph_count, atlas->config, atlas->font_num); tmp = atlas->temporary.alloc(atlas->temporary.userdata,0, tmp_size); NK_ASSERT(tmp); if (!tmp) goto failed; /* allocate glyph memory for all fonts */ baker = nk_font_baker(tmp, atlas->glyph_count, atlas->font_num, &atlas->temporary); atlas->glyphs = (struct nk_font_glyph*)atlas->permanent.alloc( atlas->permanent.userdata,0, sizeof(struct nk_font_glyph)*(nk_size)atlas->glyph_count); NK_ASSERT(atlas->glyphs); if (!atlas->glyphs) goto failed; /* pack all glyphs into a tight fit space */ atlas->custom.w = (NK_CURSOR_DATA_W*2)+1; atlas->custom.h = NK_CURSOR_DATA_H + 1; if (!nk_font_bake_pack(baker, &img_size, width, height, &atlas->custom, atlas->config, atlas->font_num, &atlas->temporary)) goto failed; /* allocate memory for the baked image font atlas */ atlas->pixel = atlas->temporary.alloc(atlas->temporary.userdata,0, img_size); NK_ASSERT(atlas->pixel); if (!atlas->pixel) goto failed; /* bake glyphs and custom white pixel into image */ nk_font_bake(baker, atlas->pixel, *width, *height, atlas->glyphs, atlas->glyph_count, atlas->config, atlas->font_num); nk_font_bake_custom_data(atlas->pixel, *width, *height, atlas->custom, nk_custom_cursor_data, NK_CURSOR_DATA_W, NK_CURSOR_DATA_H, '.', 'X'); if (fmt == NK_FONT_ATLAS_RGBA32) { /* convert alpha8 image into rgba32 image */ void *img_rgba = atlas->temporary.alloc(atlas->temporary.userdata,0, (nk_size)(*width * *height * 4)); NK_ASSERT(img_rgba); if (!img_rgba) goto failed; nk_font_bake_convert(img_rgba, *width, *height, atlas->pixel); atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = img_rgba; } atlas->tex_width = *width; atlas->tex_height = *height; /* initialize each font */ for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) { struct nk_font *font = font_iter; struct nk_font_config *config = font->config; nk_font_init(font, config->size, config->fallback_glyph, atlas->glyphs, config->font, nk_handle_ptr(0)); } /* initialize each cursor */ {NK_STORAGE const struct nk_vec2 nk_cursor_data[NK_CURSOR_COUNT][3] = { /* Pos Size Offset */ {{ 0, 3}, {12,19}, { 0, 0}}, {{13, 0}, { 7,16}, { 4, 8}}, {{31, 0}, {23,23}, {11,11}}, {{21, 0}, { 9, 23}, { 5,11}}, {{55,18}, {23, 9}, {11, 5}}, {{73, 0}, {17,17}, { 9, 9}}, {{55, 0}, {17,17}, { 9, 9}} }; for (i = 0; i < NK_CURSOR_COUNT; ++i) { struct nk_cursor *cursor = &atlas->cursors[i]; cursor->img.w = (unsigned short)*width; cursor->img.h = (unsigned short)*height; cursor->img.region[0] = (unsigned short)(atlas->custom.x + nk_cursor_data[i][0].x); cursor->img.region[1] = (unsigned short)(atlas->custom.y + nk_cursor_data[i][0].y); cursor->img.region[2] = (unsigned short)nk_cursor_data[i][1].x; cursor->img.region[3] = (unsigned short)nk_cursor_data[i][1].y; cursor->size = nk_cursor_data[i][1]; cursor->offset = nk_cursor_data[i][2]; }} /* free temporary memory */ atlas->temporary.free(atlas->temporary.userdata, tmp); return atlas->pixel; failed: /* error so cleanup all memory */ if (tmp) atlas->temporary.free(atlas->temporary.userdata, tmp); if (atlas->glyphs) { atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); atlas->glyphs = 0; } if (atlas->pixel) { atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = 0; } return 0; } NK_API void nk_font_atlas_end(struct nk_font_atlas *atlas, nk_handle texture, struct nk_draw_null_texture *null) { int i = 0; struct nk_font *font_iter; NK_ASSERT(atlas); if (!atlas) { if (!null) return; null->texture = texture; null->uv = nk_vec2(0.5f,0.5f); } if (null) { null->texture = texture; null->uv.x = (atlas->custom.x + 0.5f)/(float)atlas->tex_width; null->uv.y = (atlas->custom.y + 0.5f)/(float)atlas->tex_height; } for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) { font_iter->texture = texture; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT font_iter->handle.texture = texture; #endif } for (i = 0; i < NK_CURSOR_COUNT; ++i) atlas->cursors[i].img.handle = texture; atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = 0; atlas->tex_width = 0; atlas->tex_height = 0; atlas->custom.x = 0; atlas->custom.y = 0; atlas->custom.w = 0; atlas->custom.h = 0; } NK_API void nk_font_atlas_cleanup(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return; if (atlas->config) { struct nk_font_config *iter; for (iter = atlas->config; iter; iter = iter->next) { struct nk_font_config *i; for (i = iter->n; i != iter; i = i->n) { atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob); i->ttf_blob = 0; } atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob); iter->ttf_blob = 0; } } } NK_API void nk_font_atlas_clear(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return; if (atlas->config) { struct nk_font_config *iter, *next; for (iter = atlas->config; iter; iter = next) { struct nk_font_config *i, *n; for (i = iter->n; i != iter; i = n) { n = i->n; if (i->ttf_blob) atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob); atlas->permanent.free(atlas->permanent.userdata, i); } next = iter->next; if (i->ttf_blob) atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob); atlas->permanent.free(atlas->permanent.userdata, iter); } atlas->config = 0; } if (atlas->fonts) { struct nk_font *iter, *next; for (iter = atlas->fonts; iter; iter = next) { next = iter->next; atlas->permanent.free(atlas->permanent.userdata, iter); } atlas->fonts = 0; } if (atlas->glyphs) atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); nk_zero_struct(*atlas); } #endif /* =============================================================== * * INPUT * * ===============================================================*/ NK_API void nk_input_begin(struct nk_context *ctx) { int i; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; for (i = 0; i < NK_BUTTON_MAX; ++i) in->mouse.buttons[i].clicked = 0; in->keyboard.text_len = 0; in->mouse.scroll_delta = nk_vec2(0,0); in->mouse.prev.x = in->mouse.pos.x; in->mouse.prev.y = in->mouse.pos.y; in->mouse.delta.x = 0; in->mouse.delta.y = 0; for (i = 0; i < NK_KEY_MAX; i++) in->keyboard.keys[i].clicked = 0; } NK_API void nk_input_end(struct nk_context *ctx) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; if (in->mouse.grab) in->mouse.grab = 0; if (in->mouse.ungrab) { in->mouse.grabbed = 0; in->mouse.ungrab = 0; in->mouse.grab = 0; } } NK_API void nk_input_motion(struct nk_context *ctx, int x, int y) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; in->mouse.pos.x = (float)x; in->mouse.pos.y = (float)y; in->mouse.delta.x = in->mouse.pos.x - in->mouse.prev.x; in->mouse.delta.y = in->mouse.pos.y - in->mouse.prev.y; } NK_API void nk_input_key(struct nk_context *ctx, enum nk_keys key, int down) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; #ifdef NK_KEYSTATE_BASED_INPUT if (in->keyboard.keys[key].down != down) in->keyboard.keys[key].clicked++; #else in->keyboard.keys[key].clicked++; #endif in->keyboard.keys[key].down = down; } NK_API void nk_input_button(struct nk_context *ctx, enum nk_buttons id, int x, int y, int down) { struct nk_mouse_button *btn; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; if (in->mouse.buttons[id].down == down) return; btn = &in->mouse.buttons[id]; btn->clicked_pos.x = (float)x; btn->clicked_pos.y = (float)y; btn->down = down; btn->clicked++; } NK_API void nk_input_scroll(struct nk_context *ctx, struct nk_vec2 val) { NK_ASSERT(ctx); if (!ctx) return; ctx->input.mouse.scroll_delta.x += val.x; ctx->input.mouse.scroll_delta.y += val.y; } NK_API void nk_input_glyph(struct nk_context *ctx, const nk_glyph glyph) { int len = 0; nk_rune unicode; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; len = nk_utf_decode(glyph, &unicode, NK_UTF_SIZE); if (len && ((in->keyboard.text_len + len) < NK_INPUT_MAX)) { nk_utf_encode(unicode, &in->keyboard.text[in->keyboard.text_len], NK_INPUT_MAX - in->keyboard.text_len); in->keyboard.text_len += len; } } NK_API void nk_input_char(struct nk_context *ctx, char c) { nk_glyph glyph; NK_ASSERT(ctx); if (!ctx) return; glyph[0] = c; nk_input_glyph(ctx, glyph); } NK_API void nk_input_unicode(struct nk_context *ctx, nk_rune unicode) { nk_glyph rune; NK_ASSERT(ctx); if (!ctx) return; nk_utf_encode(unicode, rune, NK_UTF_SIZE); nk_input_glyph(ctx, rune); } NK_API int nk_input_has_mouse_click(const struct nk_input *i, enum nk_buttons id) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (btn->clicked && btn->down == nk_false) ? nk_true : nk_false; } NK_API int nk_input_has_mouse_click_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; if (!NK_INBOX(btn->clicked_pos.x,btn->clicked_pos.y,b.x,b.y,b.w,b.h)) return nk_false; return nk_true; } NK_API int nk_input_has_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return nk_input_has_mouse_click_in_rect(i, id, b) && (btn->down == down); } NK_API int nk_input_is_mouse_click_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (nk_input_has_mouse_click_down_in_rect(i, id, b, nk_false) && btn->clicked) ? nk_true : nk_false; } NK_API int nk_input_is_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (nk_input_has_mouse_click_down_in_rect(i, id, b, down) && btn->clicked) ? nk_true : nk_false; } NK_API int nk_input_any_mouse_click_in_rect(const struct nk_input *in, struct nk_rect b) { int i, down = 0; for (i = 0; i < NK_BUTTON_MAX; ++i) down = down || nk_input_is_mouse_click_in_rect(in, (enum nk_buttons)i, b); return down; } NK_API int nk_input_is_mouse_hovering_rect(const struct nk_input *i, struct nk_rect rect) { if (!i) return nk_false; return NK_INBOX(i->mouse.pos.x, i->mouse.pos.y, rect.x, rect.y, rect.w, rect.h); } NK_API int nk_input_is_mouse_prev_hovering_rect(const struct nk_input *i, struct nk_rect rect) { if (!i) return nk_false; return NK_INBOX(i->mouse.prev.x, i->mouse.prev.y, rect.x, rect.y, rect.w, rect.h); } NK_API int nk_input_mouse_clicked(const struct nk_input *i, enum nk_buttons id, struct nk_rect rect) { if (!i) return nk_false; if (!nk_input_is_mouse_hovering_rect(i, rect)) return nk_false; return nk_input_is_mouse_click_in_rect(i, id, rect); } NK_API int nk_input_is_mouse_down(const struct nk_input *i, enum nk_buttons id) { if (!i) return nk_false; return i->mouse.buttons[id].down; } NK_API int nk_input_is_mouse_pressed(const struct nk_input *i, enum nk_buttons id) { const struct nk_mouse_button *b; if (!i) return nk_false; b = &i->mouse.buttons[id]; if (b->down && b->clicked) return nk_true; return nk_false; } NK_API int nk_input_is_mouse_released(const struct nk_input *i, enum nk_buttons id) { if (!i) return nk_false; return (!i->mouse.buttons[id].down && i->mouse.buttons[id].clicked); } NK_API int nk_input_is_key_pressed(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if ((k->down && k->clicked) || (!k->down && k->clicked >= 2)) return nk_true; return nk_false; } NK_API int nk_input_is_key_released(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if ((!k->down && k->clicked) || (k->down && k->clicked >= 2)) return nk_true; return nk_false; } NK_API int nk_input_is_key_down(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if (k->down) return nk_true; return nk_false; } /* =============================================================== * * STYLE * * ===============================================================*/ NK_API void nk_style_default(struct nk_context *ctx){nk_style_from_table(ctx, 0);} #define NK_COLOR_MAP(NK_COLOR)\ NK_COLOR(NK_COLOR_TEXT, 175,175,175,255) \ NK_COLOR(NK_COLOR_WINDOW, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_HEADER, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_BORDER, 65, 65, 65, 255) \ NK_COLOR(NK_COLOR_BUTTON, 50, 50, 50, 255) \ NK_COLOR(NK_COLOR_BUTTON_HOVER, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_BUTTON_ACTIVE, 35, 35, 35, 255) \ NK_COLOR(NK_COLOR_TOGGLE, 100,100,100,255) \ NK_COLOR(NK_COLOR_TOGGLE_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_TOGGLE_CURSOR, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_SELECT, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_SELECT_ACTIVE, 35, 35, 35,255) \ NK_COLOR(NK_COLOR_SLIDER, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR, 100,100,100,255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR_ACTIVE, 150,150,150,255) \ NK_COLOR(NK_COLOR_PROPERTY, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_EDIT, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_EDIT_CURSOR, 175,175,175,255) \ NK_COLOR(NK_COLOR_COMBO, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_CHART, 120,120,120,255) \ NK_COLOR(NK_COLOR_CHART_COLOR, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_CHART_COLOR_HIGHLIGHT, 255, 0, 0, 255) \ NK_COLOR(NK_COLOR_SCROLLBAR, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR, 100,100,100,255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR_ACTIVE, 150,150,150,255) \ NK_COLOR(NK_COLOR_TAB_HEADER, 40, 40, 40,255) NK_GLOBAL const struct nk_color nk_default_color_style[NK_COLOR_COUNT] = { #define NK_COLOR(a,b,c,d,e) {b,c,d,e}, NK_COLOR_MAP(NK_COLOR) #undef NK_COLOR }; NK_GLOBAL const char *nk_color_names[NK_COLOR_COUNT] = { #define NK_COLOR(a,b,c,d,e) #a, NK_COLOR_MAP(NK_COLOR) #undef NK_COLOR }; NK_API const char* nk_style_get_color_by_name(enum nk_style_colors c) { return nk_color_names[c]; } NK_API struct nk_style_item nk_style_item_image(struct nk_image img) { struct nk_style_item i; i.type = NK_STYLE_ITEM_IMAGE; i.data.image = img; return i; } NK_API struct nk_style_item nk_style_item_color(struct nk_color col) { struct nk_style_item i; i.type = NK_STYLE_ITEM_COLOR; i.data.color = col; return i; } NK_API struct nk_style_item nk_style_item_hide(void) { struct nk_style_item i; i.type = NK_STYLE_ITEM_COLOR; i.data.color = nk_rgba(0,0,0,0); return i; } NK_API void nk_style_from_table(struct nk_context *ctx, const struct nk_color *table) { struct nk_style *style; struct nk_style_text *text; struct nk_style_button *button; struct nk_style_toggle *toggle; struct nk_style_selectable *select; struct nk_style_slider *slider; struct nk_style_progress *prog; struct nk_style_scrollbar *scroll; struct nk_style_edit *edit; struct nk_style_property *property; struct nk_style_combo *combo; struct nk_style_chart *chart; struct nk_style_tab *tab; struct nk_style_window *win; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; table = (!table) ? nk_default_color_style: table; /* default text */ text = &style->text; text->color = table[NK_COLOR_TEXT]; text->padding = nk_vec2(0,0); /* default button */ button = &style->button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_BUTTON]); button->hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]); button->active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]); button->border_color = table[NK_COLOR_BORDER]; button->text_background = table[NK_COLOR_BUTTON]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->image_padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f, 0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 4.0f; button->draw_begin = 0; button->draw_end = 0; /* contextual button */ button = &style->contextual_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]); button->active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]); button->border_color = table[NK_COLOR_WINDOW]; button->text_background = table[NK_COLOR_WINDOW]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* menu button */ button = &style->menu_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_WINDOW]); button->active = nk_style_item_color(table[NK_COLOR_WINDOW]); button->border_color = table[NK_COLOR_WINDOW]; button->text_background = table[NK_COLOR_WINDOW]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 1.0f; button->draw_begin = 0; button->draw_end = 0; /* checkbox toggle */ toggle = &style->checkbox; nk_zero_struct(*toggle); toggle->normal = nk_style_item_color(table[NK_COLOR_TOGGLE]); toggle->hover = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->active = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->cursor_normal = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->cursor_hover = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->userdata = nk_handle_ptr(0); toggle->text_background = table[NK_COLOR_WINDOW]; toggle->text_normal = table[NK_COLOR_TEXT]; toggle->text_hover = table[NK_COLOR_TEXT]; toggle->text_active = table[NK_COLOR_TEXT]; toggle->padding = nk_vec2(2.0f, 2.0f); toggle->touch_padding = nk_vec2(0,0); toggle->border_color = nk_rgba(0,0,0,0); toggle->border = 0.0f; toggle->spacing = 4; /* option toggle */ toggle = &style->option; nk_zero_struct(*toggle); toggle->normal = nk_style_item_color(table[NK_COLOR_TOGGLE]); toggle->hover = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->active = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->cursor_normal = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->cursor_hover = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->userdata = nk_handle_ptr(0); toggle->text_background = table[NK_COLOR_WINDOW]; toggle->text_normal = table[NK_COLOR_TEXT]; toggle->text_hover = table[NK_COLOR_TEXT]; toggle->text_active = table[NK_COLOR_TEXT]; toggle->padding = nk_vec2(3.0f, 3.0f); toggle->touch_padding = nk_vec2(0,0); toggle->border_color = nk_rgba(0,0,0,0); toggle->border = 0.0f; toggle->spacing = 4; /* selectable */ select = &style->selectable; nk_zero_struct(*select); select->normal = nk_style_item_color(table[NK_COLOR_SELECT]); select->hover = nk_style_item_color(table[NK_COLOR_SELECT]); select->pressed = nk_style_item_color(table[NK_COLOR_SELECT]); select->normal_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->hover_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->pressed_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->text_normal = table[NK_COLOR_TEXT]; select->text_hover = table[NK_COLOR_TEXT]; select->text_pressed = table[NK_COLOR_TEXT]; select->text_normal_active = table[NK_COLOR_TEXT]; select->text_hover_active = table[NK_COLOR_TEXT]; select->text_pressed_active = table[NK_COLOR_TEXT]; select->padding = nk_vec2(2.0f,2.0f); select->image_padding = nk_vec2(2.0f,2.0f); select->touch_padding = nk_vec2(0,0); select->userdata = nk_handle_ptr(0); select->rounding = 0.0f; select->draw_begin = 0; select->draw_end = 0; /* slider */ slider = &style->slider; nk_zero_struct(*slider); slider->normal = nk_style_item_hide(); slider->hover = nk_style_item_hide(); slider->active = nk_style_item_hide(); slider->bar_normal = table[NK_COLOR_SLIDER]; slider->bar_hover = table[NK_COLOR_SLIDER]; slider->bar_active = table[NK_COLOR_SLIDER]; slider->bar_filled = table[NK_COLOR_SLIDER_CURSOR]; slider->cursor_normal = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR]); slider->cursor_hover = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_HOVER]); slider->cursor_active = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_ACTIVE]); slider->inc_symbol = NK_SYMBOL_TRIANGLE_RIGHT; slider->dec_symbol = NK_SYMBOL_TRIANGLE_LEFT; slider->cursor_size = nk_vec2(16,16); slider->padding = nk_vec2(2,2); slider->spacing = nk_vec2(2,2); slider->userdata = nk_handle_ptr(0); slider->show_buttons = nk_false; slider->bar_height = 8; slider->rounding = 0; slider->draw_begin = 0; slider->draw_end = 0; /* slider buttons */ button = &style->slider.inc_button; button->normal = nk_style_item_color(nk_rgb(40,40,40)); button->hover = nk_style_item_color(nk_rgb(42,42,42)); button->active = nk_style_item_color(nk_rgb(44,44,44)); button->border_color = nk_rgb(65,65,65); button->text_background = nk_rgb(40,40,40); button->text_normal = nk_rgb(175,175,175); button->text_hover = nk_rgb(175,175,175); button->text_active = nk_rgb(175,175,175); button->padding = nk_vec2(8.0f,8.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->slider.dec_button = style->slider.inc_button; /* progressbar */ prog = &style->progress; nk_zero_struct(*prog); prog->normal = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->hover = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->active = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->cursor_normal = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR]); prog->cursor_hover = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_HOVER]); prog->cursor_active = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_ACTIVE]); prog->border_color = nk_rgba(0,0,0,0); prog->cursor_border_color = nk_rgba(0,0,0,0); prog->userdata = nk_handle_ptr(0); prog->padding = nk_vec2(4,4); prog->rounding = 0; prog->border = 0; prog->cursor_rounding = 0; prog->cursor_border = 0; prog->draw_begin = 0; prog->draw_end = 0; /* scrollbars */ scroll = &style->scrollh; nk_zero_struct(*scroll); scroll->normal = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->hover = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->active = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->cursor_normal = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR]); scroll->cursor_hover = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR_HOVER]); scroll->cursor_active = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE]); scroll->dec_symbol = NK_SYMBOL_CIRCLE_SOLID; scroll->inc_symbol = NK_SYMBOL_CIRCLE_SOLID; scroll->userdata = nk_handle_ptr(0); scroll->border_color = table[NK_COLOR_SCROLLBAR]; scroll->cursor_border_color = table[NK_COLOR_SCROLLBAR]; scroll->padding = nk_vec2(0,0); scroll->show_buttons = nk_false; scroll->border = 0; scroll->rounding = 0; scroll->border_cursor = 0; scroll->rounding_cursor = 0; scroll->draw_begin = 0; scroll->draw_end = 0; style->scrollv = style->scrollh; /* scrollbars buttons */ button = &style->scrollh.inc_button; button->normal = nk_style_item_color(nk_rgb(40,40,40)); button->hover = nk_style_item_color(nk_rgb(42,42,42)); button->active = nk_style_item_color(nk_rgb(44,44,44)); button->border_color = nk_rgb(65,65,65); button->text_background = nk_rgb(40,40,40); button->text_normal = nk_rgb(175,175,175); button->text_hover = nk_rgb(175,175,175); button->text_active = nk_rgb(175,175,175); button->padding = nk_vec2(4.0f,4.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->scrollh.dec_button = style->scrollh.inc_button; style->scrollv.inc_button = style->scrollh.inc_button; style->scrollv.dec_button = style->scrollh.inc_button; /* edit */ edit = &style->edit; nk_zero_struct(*edit); edit->normal = nk_style_item_color(table[NK_COLOR_EDIT]); edit->hover = nk_style_item_color(table[NK_COLOR_EDIT]); edit->active = nk_style_item_color(table[NK_COLOR_EDIT]); edit->cursor_normal = table[NK_COLOR_TEXT]; edit->cursor_hover = table[NK_COLOR_TEXT]; edit->cursor_text_normal= table[NK_COLOR_EDIT]; edit->cursor_text_hover = table[NK_COLOR_EDIT]; edit->border_color = table[NK_COLOR_BORDER]; edit->text_normal = table[NK_COLOR_TEXT]; edit->text_hover = table[NK_COLOR_TEXT]; edit->text_active = table[NK_COLOR_TEXT]; edit->selected_normal = table[NK_COLOR_TEXT]; edit->selected_hover = table[NK_COLOR_TEXT]; edit->selected_text_normal = table[NK_COLOR_EDIT]; edit->selected_text_hover = table[NK_COLOR_EDIT]; edit->scrollbar_size = nk_vec2(10,10); edit->scrollbar = style->scrollv; edit->padding = nk_vec2(4,4); edit->row_padding = 2; edit->cursor_size = 4; edit->border = 1; edit->rounding = 0; /* property */ property = &style->property; nk_zero_struct(*property); property->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->border_color = table[NK_COLOR_BORDER]; property->label_normal = table[NK_COLOR_TEXT]; property->label_hover = table[NK_COLOR_TEXT]; property->label_active = table[NK_COLOR_TEXT]; property->sym_left = NK_SYMBOL_TRIANGLE_LEFT; property->sym_right = NK_SYMBOL_TRIANGLE_RIGHT; property->userdata = nk_handle_ptr(0); property->padding = nk_vec2(4,4); property->border = 1; property->rounding = 10; property->draw_begin = 0; property->draw_end = 0; /* property buttons */ button = &style->property.dec_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_PROPERTY]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->property.inc_button = style->property.dec_button; /* property edit */ edit = &style->property.edit; nk_zero_struct(*edit); edit->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->border_color = nk_rgba(0,0,0,0); edit->cursor_normal = table[NK_COLOR_TEXT]; edit->cursor_hover = table[NK_COLOR_TEXT]; edit->cursor_text_normal= table[NK_COLOR_EDIT]; edit->cursor_text_hover = table[NK_COLOR_EDIT]; edit->text_normal = table[NK_COLOR_TEXT]; edit->text_hover = table[NK_COLOR_TEXT]; edit->text_active = table[NK_COLOR_TEXT]; edit->selected_normal = table[NK_COLOR_TEXT]; edit->selected_hover = table[NK_COLOR_TEXT]; edit->selected_text_normal = table[NK_COLOR_EDIT]; edit->selected_text_hover = table[NK_COLOR_EDIT]; edit->padding = nk_vec2(0,0); edit->cursor_size = 8; edit->border = 0; edit->rounding = 0; /* chart */ chart = &style->chart; nk_zero_struct(*chart); chart->background = nk_style_item_color(table[NK_COLOR_CHART]); chart->border_color = table[NK_COLOR_BORDER]; chart->selected_color = table[NK_COLOR_CHART_COLOR_HIGHLIGHT]; chart->color = table[NK_COLOR_CHART_COLOR]; chart->padding = nk_vec2(4,4); chart->border = 0; chart->rounding = 0; /* combo */ combo = &style->combo; combo->normal = nk_style_item_color(table[NK_COLOR_COMBO]); combo->hover = nk_style_item_color(table[NK_COLOR_COMBO]); combo->active = nk_style_item_color(table[NK_COLOR_COMBO]); combo->border_color = table[NK_COLOR_BORDER]; combo->label_normal = table[NK_COLOR_TEXT]; combo->label_hover = table[NK_COLOR_TEXT]; combo->label_active = table[NK_COLOR_TEXT]; combo->sym_normal = NK_SYMBOL_TRIANGLE_DOWN; combo->sym_hover = NK_SYMBOL_TRIANGLE_DOWN; combo->sym_active = NK_SYMBOL_TRIANGLE_DOWN; combo->content_padding = nk_vec2(4,4); combo->button_padding = nk_vec2(0,4); combo->spacing = nk_vec2(4,0); combo->border = 1; combo->rounding = 0; /* combo button */ button = &style->combo.button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_COMBO]); button->hover = nk_style_item_color(table[NK_COLOR_COMBO]); button->active = nk_style_item_color(table[NK_COLOR_COMBO]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_COMBO]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* tab */ tab = &style->tab; tab->background = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); tab->border_color = table[NK_COLOR_BORDER]; tab->text = table[NK_COLOR_TEXT]; tab->sym_minimize = NK_SYMBOL_TRIANGLE_RIGHT; tab->sym_maximize = NK_SYMBOL_TRIANGLE_DOWN; tab->padding = nk_vec2(4,4); tab->spacing = nk_vec2(4,4); tab->indent = 10.0f; tab->border = 1; tab->rounding = 0; /* tab button */ button = &style->tab.tab_minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_TAB_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->tab.tab_maximize_button =*button; /* node button */ button = &style->tab.node_minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_WINDOW]); button->active = nk_style_item_color(table[NK_COLOR_WINDOW]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_TAB_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->tab.node_maximize_button =*button; /* window header */ win = &style->window; win->header.align = NK_HEADER_RIGHT; win->header.close_symbol = NK_SYMBOL_X; win->header.minimize_symbol = NK_SYMBOL_MINUS; win->header.maximize_symbol = NK_SYMBOL_PLUS; win->header.normal = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.hover = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.active = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.label_normal = table[NK_COLOR_TEXT]; win->header.label_hover = table[NK_COLOR_TEXT]; win->header.label_active = table[NK_COLOR_TEXT]; win->header.label_padding = nk_vec2(4,4); win->header.padding = nk_vec2(4,4); win->header.spacing = nk_vec2(0,0); /* window header close button */ button = &style->window.header.close_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* window header minimize button */ button = &style->window.header.minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* window */ win->background = table[NK_COLOR_WINDOW]; win->fixed_background = nk_style_item_color(table[NK_COLOR_WINDOW]); win->border_color = table[NK_COLOR_BORDER]; win->popup_border_color = table[NK_COLOR_BORDER]; win->combo_border_color = table[NK_COLOR_BORDER]; win->contextual_border_color = table[NK_COLOR_BORDER]; win->menu_border_color = table[NK_COLOR_BORDER]; win->group_border_color = table[NK_COLOR_BORDER]; win->tooltip_border_color = table[NK_COLOR_BORDER]; win->scaler = nk_style_item_color(table[NK_COLOR_TEXT]); win->rounding = 0.0f; win->spacing = nk_vec2(4,4); win->scrollbar_size = nk_vec2(10,10); win->min_size = nk_vec2(64,64); win->combo_border = 1.0f; win->contextual_border = 1.0f; win->menu_border = 1.0f; win->group_border = 1.0f; win->tooltip_border = 1.0f; win->popup_border = 1.0f; win->border = 2.0f; win->min_row_height_padding = 8; win->padding = nk_vec2(4,4); win->group_padding = nk_vec2(4,4); win->popup_padding = nk_vec2(4,4); win->combo_padding = nk_vec2(4,4); win->contextual_padding = nk_vec2(4,4); win->menu_padding = nk_vec2(4,4); win->tooltip_padding = nk_vec2(4,4); } NK_API void nk_style_set_font(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; style->font = font; ctx->stacks.fonts.head = 0; if (ctx->current) nk_layout_reset_min_row_height(ctx); } NK_API int nk_style_push_font(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_config_stack_user_font *font_stack; struct nk_config_stack_user_font_element *element; NK_ASSERT(ctx); if (!ctx) return 0; font_stack = &ctx->stacks.fonts; NK_ASSERT(font_stack->head < (int)NK_LEN(font_stack->elements)); if (font_stack->head >= (int)NK_LEN(font_stack->elements)) return 0; element = &font_stack->elements[font_stack->head++]; element->address = &ctx->style.font; element->old_value = ctx->style.font; ctx->style.font = font; return 1; } NK_API int nk_style_pop_font(struct nk_context *ctx) { struct nk_config_stack_user_font *font_stack; struct nk_config_stack_user_font_element *element; NK_ASSERT(ctx); if (!ctx) return 0; font_stack = &ctx->stacks.fonts; NK_ASSERT(font_stack->head > 0); if (font_stack->head < 1) return 0; element = &font_stack->elements[--font_stack->head]; *element->address = element->old_value; return 1; } #define NK_STYLE_PUSH_IMPLEMENATION(prefix, type, stack) \ nk_style_push_##type(struct nk_context *ctx, prefix##_##type *address, prefix##_##type value)\ {\ struct nk_config_stack_##type * type_stack;\ struct nk_config_stack_##type##_element *element;\ NK_ASSERT(ctx);\ if (!ctx) return 0;\ type_stack = &ctx->stacks.stack;\ NK_ASSERT(type_stack->head < (int)NK_LEN(type_stack->elements));\ if (type_stack->head >= (int)NK_LEN(type_stack->elements))\ return 0;\ element = &type_stack->elements[type_stack->head++];\ element->address = address;\ element->old_value = *address;\ *address = value;\ return 1;\ } #define NK_STYLE_POP_IMPLEMENATION(type, stack) \ nk_style_pop_##type(struct nk_context *ctx)\ {\ struct nk_config_stack_##type *type_stack;\ struct nk_config_stack_##type##_element *element;\ NK_ASSERT(ctx);\ if (!ctx) return 0;\ type_stack = &ctx->stacks.stack;\ NK_ASSERT(type_stack->head > 0);\ if (type_stack->head < 1)\ return 0;\ element = &type_stack->elements[--type_stack->head];\ *element->address = element->old_value;\ return 1;\ } NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk, style_item, style_items) NK_API int NK_STYLE_PUSH_IMPLEMENATION(nk,float, floats) NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk, vec2, vectors) NK_API int NK_STYLE_PUSH_IMPLEMENATION(nk,flags, flags) NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk,color, colors) NK_API int NK_STYLE_POP_IMPLEMENATION(style_item, style_items) NK_API int NK_STYLE_POP_IMPLEMENATION(float,floats) NK_API int NK_STYLE_POP_IMPLEMENATION(vec2, vectors) NK_API int NK_STYLE_POP_IMPLEMENATION(flags,flags) NK_API int NK_STYLE_POP_IMPLEMENATION(color,colors) NK_API int nk_style_set_cursor(struct nk_context *ctx, enum nk_style_cursor c) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return 0; style = &ctx->style; if (style->cursors[c]) { style->cursor_active = style->cursors[c]; return 1; } return 0; } NK_API void nk_style_show_cursor(struct nk_context *ctx) { ctx->style.cursor_visible = nk_true; } NK_API void nk_style_hide_cursor(struct nk_context *ctx) { ctx->style.cursor_visible = nk_false; } NK_API void nk_style_load_cursor(struct nk_context *ctx, enum nk_style_cursor cursor, const struct nk_cursor *c) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; style->cursors[cursor] = c; } NK_API void nk_style_load_all_cursors(struct nk_context *ctx, struct nk_cursor *cursors) { int i = 0; struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; for (i = 0; i < NK_CURSOR_COUNT; ++i) style->cursors[i] = &cursors[i]; style->cursor_visible = nk_true; } /* ============================================================== * * CONTEXT * * ===============================================================*/ NK_INTERN void nk_setup(struct nk_context *ctx, const struct nk_user_font *font) { NK_ASSERT(ctx); if (!ctx) return; nk_zero_struct(*ctx); nk_style_default(ctx); ctx->seq = 1; if (font) ctx->style.font = font; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT nk_draw_list_init(&ctx->draw_list); #endif } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API int nk_init_default(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; return nk_init(ctx, &alloc, font); } #endif NK_API int nk_init_fixed(struct nk_context *ctx, void *memory, nk_size size, const struct nk_user_font *font) { NK_ASSERT(memory); if (!memory) return 0; nk_setup(ctx, font); nk_buffer_init_fixed(&ctx->memory, memory, size); ctx->use_pool = nk_false; return 1; } NK_API int nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font *font) { NK_ASSERT(cmds); NK_ASSERT(pool); if (!cmds || !pool) return 0; nk_setup(ctx, font); ctx->memory = *cmds; if (pool->type == NK_BUFFER_FIXED) { /* take memory from buffer and alloc fixed pool */ nk_pool_init_fixed(&ctx->pool, pool->memory.ptr, pool->memory.size); } else { /* create dynamic pool from buffer allocator */ struct nk_allocator *alloc = &pool->pool; nk_pool_init(&ctx->pool, alloc, NK_POOL_DEFAULT_CAPACITY); } ctx->use_pool = nk_true; return 1; } NK_API int nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font) { NK_ASSERT(alloc); if (!alloc) return 0; nk_setup(ctx, font); nk_buffer_init(&ctx->memory, alloc, NK_DEFAULT_COMMAND_BUFFER_SIZE); nk_pool_init(&ctx->pool, alloc, NK_POOL_DEFAULT_CAPACITY); ctx->use_pool = nk_true; return 1; } #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_set_user_data(struct nk_context *ctx, nk_handle handle) { if (!ctx) return; ctx->userdata = handle; if (ctx->current) ctx->current->buffer.userdata = handle; } #endif NK_API void nk_free(struct nk_context *ctx) { NK_ASSERT(ctx); if (!ctx) return; nk_buffer_free(&ctx->memory); if (ctx->use_pool) nk_pool_free(&ctx->pool); nk_zero(&ctx->input, sizeof(ctx->input)); nk_zero(&ctx->style, sizeof(ctx->style)); nk_zero(&ctx->memory, sizeof(ctx->memory)); ctx->seq = 0; ctx->build = 0; ctx->begin = 0; ctx->end = 0; ctx->active = 0; ctx->current = 0; ctx->freelist = 0; ctx->count = 0; } NK_API void nk_clear(struct nk_context *ctx) { struct nk_window *iter; struct nk_window *next; NK_ASSERT(ctx); if (!ctx) return; if (ctx->use_pool) nk_buffer_clear(&ctx->memory); else nk_buffer_reset(&ctx->memory, NK_BUFFER_FRONT); ctx->build = 0; ctx->memory.calls = 0; ctx->last_widget_state = 0; ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_ARROW]; NK_MEMSET(&ctx->overlay, 0, sizeof(ctx->overlay)); /* garbage collector */ iter = ctx->begin; while (iter) { /* make sure valid minimized windows do not get removed */ if ((iter->flags & NK_WINDOW_MINIMIZED) && !(iter->flags & NK_WINDOW_CLOSED) && iter->seq == ctx->seq) { iter = iter->next; continue; } /* remove hotness from hidden or closed windows*/ if (((iter->flags & NK_WINDOW_HIDDEN) || (iter->flags & NK_WINDOW_CLOSED)) && iter == ctx->active) { ctx->active = iter->prev; ctx->end = iter->prev; if (!ctx->end) ctx->begin = 0; if (ctx->active) ctx->active->flags &= ~(unsigned)NK_WINDOW_ROM; } /* free unused popup windows */ if (iter->popup.win && iter->popup.win->seq != ctx->seq) { nk_free_window(ctx, iter->popup.win); iter->popup.win = 0; } /* remove unused window state tables */ {struct nk_table *n, *it = iter->tables; while (it) { n = it->next; if (it->seq != ctx->seq) { nk_remove_table(iter, it); nk_zero(it, sizeof(union nk_page_data)); nk_free_table(ctx, it); if (it == iter->tables) iter->tables = n; } it = n; }} /* window itself is not used anymore so free */ if (iter->seq != ctx->seq || iter->flags & NK_WINDOW_CLOSED) { next = iter->next; nk_remove_window(ctx, iter); nk_free_window(ctx, iter); iter = next; } else iter = iter->next; } ctx->seq++; } NK_LIB void nk_start_buffer(struct nk_context *ctx, struct nk_command_buffer *buffer) { NK_ASSERT(ctx); NK_ASSERT(buffer); if (!ctx || !buffer) return; buffer->begin = ctx->memory.allocated; buffer->end = buffer->begin; buffer->last = buffer->begin; buffer->clip = nk_null_rect; } NK_LIB void nk_start(struct nk_context *ctx, struct nk_window *win) { NK_ASSERT(ctx); NK_ASSERT(win); nk_start_buffer(ctx, &win->buffer); } NK_LIB void nk_start_popup(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; /* save buffer fill state for popup */ buf = &win->popup.buf; buf->begin = win->buffer.end; buf->end = win->buffer.end; buf->parent = win->buffer.last; buf->last = buf->begin; buf->active = nk_true; } NK_LIB void nk_finish_popup(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; buf = &win->popup.buf; buf->last = win->buffer.last; buf->end = win->buffer.end; } NK_LIB void nk_finish_buffer(struct nk_context *ctx, struct nk_command_buffer *buffer) { NK_ASSERT(ctx); NK_ASSERT(buffer); if (!ctx || !buffer) return; buffer->end = ctx->memory.allocated; } NK_LIB void nk_finish(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; struct nk_command *parent_last; void *memory; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; nk_finish_buffer(ctx, &win->buffer); if (!win->popup.buf.active) return; buf = &win->popup.buf; memory = ctx->memory.memory.ptr; parent_last = nk_ptr_add(struct nk_command, memory, buf->parent); parent_last->next = buf->end; } NK_LIB void nk_build(struct nk_context *ctx) { struct nk_window *it = 0; struct nk_command *cmd = 0; nk_byte *buffer = 0; /* draw cursor overlay */ if (!ctx->style.cursor_active) ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_ARROW]; if (ctx->style.cursor_active && !ctx->input.mouse.grabbed && ctx->style.cursor_visible) { struct nk_rect mouse_bounds; const struct nk_cursor *cursor = ctx->style.cursor_active; nk_command_buffer_init(&ctx->overlay, &ctx->memory, NK_CLIPPING_OFF); nk_start_buffer(ctx, &ctx->overlay); mouse_bounds.x = ctx->input.mouse.pos.x - cursor->offset.x; mouse_bounds.y = ctx->input.mouse.pos.y - cursor->offset.y; mouse_bounds.w = cursor->size.x; mouse_bounds.h = cursor->size.y; nk_draw_image(&ctx->overlay, mouse_bounds, &cursor->img, nk_white); nk_finish_buffer(ctx, &ctx->overlay); } /* build one big draw command list out of all window buffers */ it = ctx->begin; buffer = (nk_byte*)ctx->memory.memory.ptr; while (it != 0) { struct nk_window *next = it->next; if (it->buffer.last == it->buffer.begin || (it->flags & NK_WINDOW_HIDDEN)|| it->seq != ctx->seq) goto cont; cmd = nk_ptr_add(struct nk_command, buffer, it->buffer.last); while (next && ((next->buffer.last == next->buffer.begin) || (next->flags & NK_WINDOW_HIDDEN) || next->seq != ctx->seq)) next = next->next; /* skip empty command buffers */ if (next) cmd->next = next->buffer.begin; cont: it = next; } /* append all popup draw commands into lists */ it = ctx->begin; while (it != 0) { struct nk_window *next = it->next; struct nk_popup_buffer *buf; if (!it->popup.buf.active) goto skip; buf = &it->popup.buf; cmd->next = buf->begin; cmd = nk_ptr_add(struct nk_command, buffer, buf->last); buf->active = nk_false; skip: it = next; } if (cmd) { /* append overlay commands */ if (ctx->overlay.end != ctx->overlay.begin) cmd->next = ctx->overlay.begin; else cmd->next = ctx->memory.allocated; } } NK_API const struct nk_command* nk__begin(struct nk_context *ctx) { struct nk_window *iter; nk_byte *buffer; NK_ASSERT(ctx); if (!ctx) return 0; if (!ctx->count) return 0; buffer = (nk_byte*)ctx->memory.memory.ptr; if (!ctx->build) { nk_build(ctx); ctx->build = nk_true; } iter = ctx->begin; while (iter && ((iter->buffer.begin == iter->buffer.end) || (iter->flags & NK_WINDOW_HIDDEN) || iter->seq != ctx->seq)) iter = iter->next; if (!iter) return 0; return nk_ptr_add_const(struct nk_command, buffer, iter->buffer.begin); } NK_API const struct nk_command* nk__next(struct nk_context *ctx, const struct nk_command *cmd) { nk_byte *buffer; const struct nk_command *next; NK_ASSERT(ctx); if (!ctx || !cmd || !ctx->count) return 0; if (cmd->next >= ctx->memory.allocated) return 0; buffer = (nk_byte*)ctx->memory.memory.ptr; next = nk_ptr_add_const(struct nk_command, buffer, cmd->next); return next; } /* =============================================================== * * POOL * * ===============================================================*/ NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity) { nk_zero(pool, sizeof(*pool)); pool->alloc = *alloc; pool->capacity = capacity; pool->type = NK_BUFFER_DYNAMIC; pool->pages = 0; } NK_LIB void nk_pool_free(struct nk_pool *pool) { struct nk_page *iter = pool->pages; if (!pool) return; if (pool->type == NK_BUFFER_FIXED) return; while (iter) { struct nk_page *next = iter->next; pool->alloc.free(pool->alloc.userdata, iter); iter = next; } } NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size) { nk_zero(pool, sizeof(*pool)); NK_ASSERT(size >= sizeof(struct nk_page)); if (size < sizeof(struct nk_page)) return; pool->capacity = (unsigned)(size - sizeof(struct nk_page)) / sizeof(struct nk_page_element); pool->pages = (struct nk_page*)memory; pool->type = NK_BUFFER_FIXED; pool->size = size; } NK_LIB struct nk_page_element* nk_pool_alloc(struct nk_pool *pool) { if (!pool->pages || pool->pages->size >= pool->capacity) { /* allocate new page */ struct nk_page *page; if (pool->type == NK_BUFFER_FIXED) { NK_ASSERT(pool->pages); if (!pool->pages) return 0; NK_ASSERT(pool->pages->size < pool->capacity); return 0; } else { nk_size size = sizeof(struct nk_page); size += NK_POOL_DEFAULT_CAPACITY * sizeof(union nk_page_data); page = (struct nk_page*)pool->alloc.alloc(pool->alloc.userdata,0, size); page->next = pool->pages; pool->pages = page; page->size = 0; } } return &pool->pages->win[pool->pages->size++]; } /* =============================================================== * * PAGE ELEMENT * * ===============================================================*/ NK_LIB struct nk_page_element* nk_create_page_element(struct nk_context *ctx) { struct nk_page_element *elem; if (ctx->freelist) { /* unlink page element from free list */ elem = ctx->freelist; ctx->freelist = elem->next; } else if (ctx->use_pool) { /* allocate page element from memory pool */ elem = nk_pool_alloc(&ctx->pool); NK_ASSERT(elem); if (!elem) return 0; } else { /* allocate new page element from back of fixed size memory buffer */ NK_STORAGE const nk_size size = sizeof(struct nk_page_element); NK_STORAGE const nk_size align = NK_ALIGNOF(struct nk_page_element); elem = (struct nk_page_element*)nk_buffer_alloc(&ctx->memory, NK_BUFFER_BACK, size, align); NK_ASSERT(elem); if (!elem) return 0; } nk_zero_struct(*elem); elem->next = 0; elem->prev = 0; return elem; } NK_LIB void nk_link_page_element_into_freelist(struct nk_context *ctx, struct nk_page_element *elem) { /* link table into freelist */ if (!ctx->freelist) { ctx->freelist = elem; } else { elem->next = ctx->freelist; ctx->freelist = elem; } } NK_LIB void nk_free_page_element(struct nk_context *ctx, struct nk_page_element *elem) { /* we have a pool so just add to free list */ if (ctx->use_pool) { nk_link_page_element_into_freelist(ctx, elem); return; } /* if possible remove last element from back of fixed memory buffer */ {void *elem_end = (void*)(elem + 1); void *buffer_end = (nk_byte*)ctx->memory.memory.ptr + ctx->memory.size; if (elem_end == buffer_end) ctx->memory.size -= sizeof(struct nk_page_element); else nk_link_page_element_into_freelist(ctx, elem);} } /* =============================================================== * * TABLE * * ===============================================================*/ NK_LIB struct nk_table* nk_create_table(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; nk_zero_struct(*elem); return &elem->data.tbl; } NK_LIB void nk_free_table(struct nk_context *ctx, struct nk_table *tbl) { union nk_page_data *pd = NK_CONTAINER_OF(tbl, union nk_page_data, tbl); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe); } NK_LIB void nk_push_table(struct nk_window *win, struct nk_table *tbl) { if (!win->tables) { win->tables = tbl; tbl->next = 0; tbl->prev = 0; tbl->size = 0; win->table_count = 1; return; } win->tables->prev = tbl; tbl->next = win->tables; tbl->prev = 0; tbl->size = 0; win->tables = tbl; win->table_count++; } NK_LIB void nk_remove_table(struct nk_window *win, struct nk_table *tbl) { if (win->tables == tbl) win->tables = tbl->next; if (tbl->next) tbl->next->prev = tbl->prev; if (tbl->prev) tbl->prev->next = tbl->next; tbl->next = 0; tbl->prev = 0; } NK_LIB nk_uint* nk_add_value(struct nk_context *ctx, struct nk_window *win, nk_hash name, nk_uint value) { NK_ASSERT(ctx); NK_ASSERT(win); if (!win || !ctx) return 0; if (!win->tables || win->tables->size >= NK_VALUE_PAGE_CAPACITY) { struct nk_table *tbl = nk_create_table(ctx); NK_ASSERT(tbl); if (!tbl) return 0; nk_push_table(win, tbl); } win->tables->seq = win->seq; win->tables->keys[win->tables->size] = name; win->tables->values[win->tables->size] = value; return &win->tables->values[win->tables->size++]; } NK_LIB nk_uint* nk_find_value(struct nk_window *win, nk_hash name) { struct nk_table *iter = win->tables; while (iter) { unsigned int i = 0; unsigned int size = iter->size; for (i = 0; i < size; ++i) { if (iter->keys[i] == name) { iter->seq = win->seq; return &iter->values[i]; } } size = NK_VALUE_PAGE_CAPACITY; iter = iter->next; } return 0; } /* =============================================================== * * PANEL * * ===============================================================*/ NK_LIB void* nk_create_panel(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; nk_zero_struct(*elem); return &elem->data.pan; } NK_LIB void nk_free_panel(struct nk_context *ctx, struct nk_panel *pan) { union nk_page_data *pd = NK_CONTAINER_OF(pan, union nk_page_data, pan); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe); } NK_LIB int nk_panel_has_header(nk_flags flags, const char *title) { int active = 0; active = (flags & (NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE)); active = active || (flags & NK_WINDOW_TITLE); active = active && !(flags & NK_WINDOW_HIDDEN) && title; return active; } NK_LIB struct nk_vec2 nk_panel_get_padding(const struct nk_style *style, enum nk_panel_type type) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.padding; case NK_PANEL_GROUP: return style->window.group_padding; case NK_PANEL_POPUP: return style->window.popup_padding; case NK_PANEL_CONTEXTUAL: return style->window.contextual_padding; case NK_PANEL_COMBO: return style->window.combo_padding; case NK_PANEL_MENU: return style->window.menu_padding; case NK_PANEL_TOOLTIP: return style->window.menu_padding;} } NK_LIB float nk_panel_get_border(const struct nk_style *style, nk_flags flags, enum nk_panel_type type) { if (flags & NK_WINDOW_BORDER) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.border; case NK_PANEL_GROUP: return style->window.group_border; case NK_PANEL_POPUP: return style->window.popup_border; case NK_PANEL_CONTEXTUAL: return style->window.contextual_border; case NK_PANEL_COMBO: return style->window.combo_border; case NK_PANEL_MENU: return style->window.menu_border; case NK_PANEL_TOOLTIP: return style->window.menu_border; }} else return 0; } NK_LIB struct nk_color nk_panel_get_border_color(const struct nk_style *style, enum nk_panel_type type) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.border_color; case NK_PANEL_GROUP: return style->window.group_border_color; case NK_PANEL_POPUP: return style->window.popup_border_color; case NK_PANEL_CONTEXTUAL: return style->window.contextual_border_color; case NK_PANEL_COMBO: return style->window.combo_border_color; case NK_PANEL_MENU: return style->window.menu_border_color; case NK_PANEL_TOOLTIP: return style->window.menu_border_color;} } NK_LIB int nk_panel_is_sub(enum nk_panel_type type) { return (type & NK_PANEL_SET_SUB)?1:0; } NK_LIB int nk_panel_is_nonblock(enum nk_panel_type type) { return (type & NK_PANEL_SET_NONBLOCK)?1:0; } NK_LIB int nk_panel_begin(struct nk_context *ctx, const char *title, enum nk_panel_type panel_type) { struct nk_input *in; struct nk_window *win; struct nk_panel *layout; struct nk_command_buffer *out; const struct nk_style *style; const struct nk_user_font *font; struct nk_vec2 scrollbar_size; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; nk_zero(ctx->current->layout, sizeof(*ctx->current->layout)); if ((ctx->current->flags & NK_WINDOW_HIDDEN) || (ctx->current->flags & NK_WINDOW_CLOSED)) { nk_zero(ctx->current->layout, sizeof(struct nk_panel)); ctx->current->layout->type = panel_type; return 0; } /* pull state into local stack */ style = &ctx->style; font = style->font; win = ctx->current; layout = win->layout; out = &win->buffer; in = (win->flags & NK_WINDOW_NO_INPUT) ? 0: &ctx->input; #ifdef NK_INCLUDE_COMMAND_USERDATA win->buffer.userdata = ctx->userdata; #endif /* pull style configuration into local stack */ scrollbar_size = style->window.scrollbar_size; panel_padding = nk_panel_get_padding(style, panel_type); /* window movement */ if ((win->flags & NK_WINDOW_MOVABLE) && !(win->flags & NK_WINDOW_ROM)) { int left_mouse_down; int left_mouse_clicked; int left_mouse_click_in_cursor; /* calculate draggable window space */ struct nk_rect header; header.x = win->bounds.x; header.y = win->bounds.y; header.w = win->bounds.w; if (nk_panel_has_header(win->flags, title)) { header.h = font->height + 2.0f * style->window.header.padding.y; header.h += 2.0f * style->window.header.label_padding.y; } else header.h = panel_padding.y; /* window movement by dragging */ left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_clicked = (int)in->mouse.buttons[NK_BUTTON_LEFT].clicked; left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, header, nk_true); if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) { win->bounds.x = win->bounds.x + in->mouse.delta.x; win->bounds.y = win->bounds.y + in->mouse.delta.y; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x += in->mouse.delta.x; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y += in->mouse.delta.y; ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_MOVE]; } } /* setup panel */ layout->type = panel_type; layout->flags = win->flags; layout->bounds = win->bounds; layout->bounds.x += panel_padding.x; layout->bounds.w -= 2*panel_padding.x; if (win->flags & NK_WINDOW_BORDER) { layout->border = nk_panel_get_border(style, win->flags, panel_type); layout->bounds = nk_shrink_rect(layout->bounds, layout->border); } else layout->border = 0; layout->at_y = layout->bounds.y; layout->at_x = layout->bounds.x; layout->max_x = 0; layout->header_height = 0; layout->footer_height = 0; nk_layout_reset_min_row_height(ctx); layout->row.index = 0; layout->row.columns = 0; layout->row.ratio = 0; layout->row.item_width = 0; layout->row.tree_depth = 0; layout->row.height = panel_padding.y; layout->has_scrolling = nk_true; if (!(win->flags & NK_WINDOW_NO_SCROLLBAR)) layout->bounds.w -= scrollbar_size.x; if (!nk_panel_is_nonblock(panel_type)) { layout->footer_height = 0; if (!(win->flags & NK_WINDOW_NO_SCROLLBAR) || win->flags & NK_WINDOW_SCALABLE) layout->footer_height = scrollbar_size.y; layout->bounds.h -= layout->footer_height; } /* panel header */ if (nk_panel_has_header(win->flags, title)) { struct nk_text text; struct nk_rect header; const struct nk_style_item *background = 0; /* calculate header bounds */ header.x = win->bounds.x; header.y = win->bounds.y; header.w = win->bounds.w; header.h = font->height + 2.0f * style->window.header.padding.y; header.h += (2.0f * style->window.header.label_padding.y); /* shrink panel by header */ layout->header_height = header.h; layout->bounds.y += header.h; layout->bounds.h -= header.h; layout->at_y += header.h; /* select correct header background and text color */ if (ctx->active == win) { background = &style->window.header.active; text.text = style->window.header.label_active; } else if (nk_input_is_mouse_hovering_rect(&ctx->input, header)) { background = &style->window.header.hover; text.text = style->window.header.label_hover; } else { background = &style->window.header.normal; text.text = style->window.header.label_normal; } /* draw header background */ header.h += 1.0f; if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, background->data.color); } /* window close button */ {struct nk_rect button; button.y = header.y + style->window.header.padding.y; button.h = header.h - 2 * style->window.header.padding.y; button.w = button.h; if (win->flags & NK_WINDOW_CLOSABLE) { nk_flags ws = 0; if (style->window.header.align == NK_HEADER_RIGHT) { button.x = (header.w + header.x) - (button.w + style->window.header.padding.x); header.w -= button.w + style->window.header.spacing.x + style->window.header.padding.x; } else { button.x = header.x + style->window.header.padding.x; header.x += button.w + style->window.header.spacing.x + style->window.header.padding.x; } if (nk_do_button_symbol(&ws, &win->buffer, button, style->window.header.close_symbol, NK_BUTTON_DEFAULT, &style->window.header.close_button, in, style->font) && !(win->flags & NK_WINDOW_ROM)) { layout->flags |= NK_WINDOW_HIDDEN; layout->flags &= (nk_flags)~NK_WINDOW_MINIMIZED; } } /* window minimize button */ if (win->flags & NK_WINDOW_MINIMIZABLE) { nk_flags ws = 0; if (style->window.header.align == NK_HEADER_RIGHT) { button.x = (header.w + header.x) - button.w; if (!(win->flags & NK_WINDOW_CLOSABLE)) { button.x -= style->window.header.padding.x; header.w -= style->window.header.padding.x; } header.w -= button.w + style->window.header.spacing.x; } else { button.x = header.x; header.x += button.w + style->window.header.spacing.x + style->window.header.padding.x; } if (nk_do_button_symbol(&ws, &win->buffer, button, (layout->flags & NK_WINDOW_MINIMIZED)? style->window.header.maximize_symbol: style->window.header.minimize_symbol, NK_BUTTON_DEFAULT, &style->window.header.minimize_button, in, style->font) && !(win->flags & NK_WINDOW_ROM)) layout->flags = (layout->flags & NK_WINDOW_MINIMIZED) ? layout->flags & (nk_flags)~NK_WINDOW_MINIMIZED: layout->flags | NK_WINDOW_MINIMIZED; }} {/* window header title */ int text_len = nk_strlen(title); struct nk_rect label = {0,0,0,0}; float t = font->width(font->userdata, font->height, title, text_len); text.padding = nk_vec2(0,0); label.x = header.x + style->window.header.padding.x; label.x += style->window.header.label_padding.x; label.y = header.y + style->window.header.label_padding.y; label.h = font->height + 2 * style->window.header.label_padding.y; label.w = t + 2 * style->window.header.spacing.x; label.w = NK_CLAMP(0, label.w, header.x + header.w - label.x); nk_widget_text(out, label,(const char*)title, text_len, &text, NK_TEXT_LEFT, font);} } /* draw window background */ if (!(layout->flags & NK_WINDOW_MINIMIZED) && !(layout->flags & NK_WINDOW_DYNAMIC)) { struct nk_rect body; body.x = win->bounds.x; body.w = win->bounds.w; body.y = (win->bounds.y + layout->header_height); body.h = (win->bounds.h - layout->header_height); if (style->window.fixed_background.type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, body, &style->window.fixed_background.data.image, nk_white); else nk_fill_rect(out, body, 0, style->window.fixed_background.data.color); } /* set clipping rectangle */ {struct nk_rect clip; layout->clip = layout->bounds; nk_unify(&clip, &win->buffer.clip, layout->clip.x, layout->clip.y, layout->clip.x + layout->clip.w, layout->clip.y + layout->clip.h); nk_push_scissor(out, clip); layout->clip = clip;} return !(layout->flags & NK_WINDOW_HIDDEN) && !(layout->flags & NK_WINDOW_MINIMIZED); } NK_LIB void nk_panel_end(struct nk_context *ctx) { struct nk_input *in; struct nk_window *window; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; struct nk_vec2 scrollbar_size; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; window = ctx->current; layout = window->layout; style = &ctx->style; out = &window->buffer; in = (layout->flags & NK_WINDOW_ROM || layout->flags & NK_WINDOW_NO_INPUT) ? 0 :&ctx->input; if (!nk_panel_is_sub(layout->type)) nk_push_scissor(out, nk_null_rect); /* cache configuration data */ scrollbar_size = style->window.scrollbar_size; panel_padding = nk_panel_get_padding(style, layout->type); /* update the current cursor Y-position to point over the last added widget */ layout->at_y += layout->row.height; /* dynamic panels */ if (layout->flags & NK_WINDOW_DYNAMIC && !(layout->flags & NK_WINDOW_MINIMIZED)) { /* update panel height to fit dynamic growth */ struct nk_rect empty_space; if (layout->at_y < (layout->bounds.y + layout->bounds.h)) layout->bounds.h = layout->at_y - layout->bounds.y; /* fill top empty space */ empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y; empty_space.h = panel_padding.y; empty_space.w = window->bounds.w; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill left empty space */ empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y; empty_space.w = panel_padding.x + layout->border; empty_space.h = layout->bounds.h; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill right empty space */ empty_space.x = layout->bounds.x + layout->bounds.w; empty_space.y = layout->bounds.y; empty_space.w = panel_padding.x + layout->border; empty_space.h = layout->bounds.h; if (*layout->offset_y == 0 && !(layout->flags & NK_WINDOW_NO_SCROLLBAR)) empty_space.w += scrollbar_size.x; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill bottom empty space */ if (layout->footer_height > 0) { empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y + layout->bounds.h; empty_space.w = window->bounds.w; empty_space.h = layout->footer_height; nk_fill_rect(out, empty_space, 0, style->window.background); } } /* scrollbars */ if (!(layout->flags & NK_WINDOW_NO_SCROLLBAR) && !(layout->flags & NK_WINDOW_MINIMIZED) && window->scrollbar_hiding_timer < NK_SCROLLBAR_HIDING_TIMEOUT) { struct nk_rect scroll; int scroll_has_scrolling; float scroll_target; float scroll_offset; float scroll_step; float scroll_inc; /* mouse wheel scrolling */ if (nk_panel_is_sub(layout->type)) { /* sub-window mouse wheel scrolling */ struct nk_window *root_window = window; struct nk_panel *root_panel = window->layout; while (root_panel->parent) root_panel = root_panel->parent; while (root_window->parent) root_window = root_window->parent; /* only allow scrolling if parent window is active */ scroll_has_scrolling = 0; if ((root_window == ctx->active) && layout->has_scrolling) { /* and panel is being hovered and inside clip rect*/ if (nk_input_is_mouse_hovering_rect(in, layout->bounds) && NK_INTERSECT(layout->bounds.x, layout->bounds.y, layout->bounds.w, layout->bounds.h, root_panel->clip.x, root_panel->clip.y, root_panel->clip.w, root_panel->clip.h)) { /* deactivate all parent scrolling */ root_panel = window->layout; while (root_panel->parent) { root_panel->has_scrolling = nk_false; root_panel = root_panel->parent; } root_panel->has_scrolling = nk_false; scroll_has_scrolling = nk_true; } } } else if (!nk_panel_is_sub(layout->type)) { /* window mouse wheel scrolling */ scroll_has_scrolling = (window == ctx->active) && layout->has_scrolling; if (in && (in->mouse.scroll_delta.y > 0 || in->mouse.scroll_delta.x > 0) && scroll_has_scrolling) window->scrolled = nk_true; else window->scrolled = nk_false; } else scroll_has_scrolling = nk_false; { /* vertical scrollbar */ nk_flags state = 0; scroll.x = layout->bounds.x + layout->bounds.w + panel_padding.x; scroll.y = layout->bounds.y; scroll.w = scrollbar_size.x; scroll.h = layout->bounds.h; scroll_offset = (float)*layout->offset_y; scroll_step = scroll.h * 0.10f; scroll_inc = scroll.h * 0.01f; scroll_target = (float)(int)(layout->at_y - scroll.y); scroll_offset = nk_do_scrollbarv(&state, out, scroll, scroll_has_scrolling, scroll_offset, scroll_target, scroll_step, scroll_inc, &ctx->style.scrollv, in, style->font); *layout->offset_y = (nk_uint)scroll_offset; if (in && scroll_has_scrolling) in->mouse.scroll_delta.y = 0; } { /* horizontal scrollbar */ nk_flags state = 0; scroll.x = layout->bounds.x; scroll.y = layout->bounds.y + layout->bounds.h; scroll.w = layout->bounds.w; scroll.h = scrollbar_size.y; scroll_offset = (float)*layout->offset_x; scroll_target = (float)(int)(layout->max_x - scroll.x); scroll_step = layout->max_x * 0.05f; scroll_inc = layout->max_x * 0.005f; scroll_offset = nk_do_scrollbarh(&state, out, scroll, scroll_has_scrolling, scroll_offset, scroll_target, scroll_step, scroll_inc, &ctx->style.scrollh, in, style->font); *layout->offset_x = (nk_uint)scroll_offset; } } /* hide scroll if no user input */ if (window->flags & NK_WINDOW_SCROLL_AUTO_HIDE) { int has_input = ctx->input.mouse.delta.x != 0 || ctx->input.mouse.delta.y != 0 || ctx->input.mouse.scroll_delta.y != 0; int is_window_hovered = nk_window_is_hovered(ctx); int any_item_active = (ctx->last_widget_state & NK_WIDGET_STATE_MODIFIED); if ((!has_input && is_window_hovered) || (!is_window_hovered && !any_item_active)) window->scrollbar_hiding_timer += ctx->delta_time_seconds; else window->scrollbar_hiding_timer = 0; } else window->scrollbar_hiding_timer = 0; /* window border */ if (layout->flags & NK_WINDOW_BORDER) { struct nk_color border_color = nk_panel_get_border_color(style, layout->type); const float padding_y = (layout->flags & NK_WINDOW_MINIMIZED) ? (style->window.border + window->bounds.y + layout->header_height) : ((layout->flags & NK_WINDOW_DYNAMIC) ? (layout->bounds.y + layout->bounds.h + layout->footer_height) : (window->bounds.y + window->bounds.h)); struct nk_rect b = window->bounds; b.h = padding_y - window->bounds.y; nk_stroke_rect(out, b, 0, layout->border, border_color); } /* scaler */ if ((layout->flags & NK_WINDOW_SCALABLE) && in && !(layout->flags & NK_WINDOW_MINIMIZED)) { /* calculate scaler bounds */ struct nk_rect scaler; scaler.w = scrollbar_size.x; scaler.h = scrollbar_size.y; scaler.y = layout->bounds.y + layout->bounds.h; if (layout->flags & NK_WINDOW_SCALE_LEFT) scaler.x = layout->bounds.x - panel_padding.x * 0.5f; else scaler.x = layout->bounds.x + layout->bounds.w + panel_padding.x; if (layout->flags & NK_WINDOW_NO_SCROLLBAR) scaler.x -= scaler.w; /* draw scaler */ {const struct nk_style_item *item = &style->window.scaler; if (item->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, scaler, &item->data.image, nk_white); else { if (layout->flags & NK_WINDOW_SCALE_LEFT) { nk_fill_triangle(out, scaler.x, scaler.y, scaler.x, scaler.y + scaler.h, scaler.x + scaler.w, scaler.y + scaler.h, item->data.color); } else { nk_fill_triangle(out, scaler.x + scaler.w, scaler.y, scaler.x + scaler.w, scaler.y + scaler.h, scaler.x, scaler.y + scaler.h, item->data.color); } }} /* do window scaling */ if (!(window->flags & NK_WINDOW_ROM)) { struct nk_vec2 window_size = style->window.min_size; int left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; int left_mouse_click_in_scaler = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, scaler, nk_true); if (left_mouse_down && left_mouse_click_in_scaler) { float delta_x = in->mouse.delta.x; if (layout->flags & NK_WINDOW_SCALE_LEFT) { delta_x = -delta_x; window->bounds.x += in->mouse.delta.x; } /* dragging in x-direction */ if (window->bounds.w + delta_x >= window_size.x) { if ((delta_x < 0) || (delta_x > 0 && in->mouse.pos.x >= scaler.x)) { window->bounds.w = window->bounds.w + delta_x; scaler.x += in->mouse.delta.x; } } /* dragging in y-direction (only possible if static window) */ if (!(layout->flags & NK_WINDOW_DYNAMIC)) { if (window_size.y < window->bounds.h + in->mouse.delta.y) { if ((in->mouse.delta.y < 0) || (in->mouse.delta.y > 0 && in->mouse.pos.y >= scaler.y)) { window->bounds.h = window->bounds.h + in->mouse.delta.y; scaler.y += in->mouse.delta.y; } } } ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_RESIZE_TOP_RIGHT_DOWN_LEFT]; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = scaler.x + scaler.w/2.0f; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y = scaler.y + scaler.h/2.0f; } } } if (!nk_panel_is_sub(layout->type)) { /* window is hidden so clear command buffer */ if (layout->flags & NK_WINDOW_HIDDEN) nk_command_buffer_reset(&window->buffer); /* window is visible and not tab */ else nk_finish(ctx, window); } /* NK_WINDOW_REMOVE_ROM flag was set so remove NK_WINDOW_ROM */ if (layout->flags & NK_WINDOW_REMOVE_ROM) { layout->flags &= ~(nk_flags)NK_WINDOW_ROM; layout->flags &= ~(nk_flags)NK_WINDOW_REMOVE_ROM; } window->flags = layout->flags; /* property garbage collector */ if (window->property.active && window->property.old != window->property.seq && window->property.active == window->property.prev) { nk_zero(&window->property, sizeof(window->property)); } else { window->property.old = window->property.seq; window->property.prev = window->property.active; window->property.seq = 0; } /* edit garbage collector */ if (window->edit.active && window->edit.old != window->edit.seq && window->edit.active == window->edit.prev) { nk_zero(&window->edit, sizeof(window->edit)); } else { window->edit.old = window->edit.seq; window->edit.prev = window->edit.active; window->edit.seq = 0; } /* contextual garbage collector */ if (window->popup.active_con && window->popup.con_old != window->popup.con_count) { window->popup.con_count = 0; window->popup.con_old = 0; window->popup.active_con = 0; } else { window->popup.con_old = window->popup.con_count; window->popup.con_count = 0; } window->popup.combo_count = 0; /* helper to make sure you have a 'nk_tree_push' for every 'nk_tree_pop' */ NK_ASSERT(!layout->row.tree_depth); } /* =============================================================== * * WINDOW * * ===============================================================*/ NK_LIB void* nk_create_window(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; elem->data.win.seq = ctx->seq; return &elem->data.win; } NK_LIB void nk_free_window(struct nk_context *ctx, struct nk_window *win) { /* unlink windows from list */ struct nk_table *it = win->tables; if (win->popup.win) { nk_free_window(ctx, win->popup.win); win->popup.win = 0; } win->next = 0; win->prev = 0; while (it) { /*free window state tables */ struct nk_table *n = it->next; nk_remove_table(win, it); nk_free_table(ctx, it); if (it == win->tables) win->tables = n; it = n; } /* link windows into freelist */ {union nk_page_data *pd = NK_CONTAINER_OF(win, union nk_page_data, win); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe);} } NK_LIB struct nk_window* nk_find_window(struct nk_context *ctx, nk_hash hash, const char *name) { struct nk_window *iter; iter = ctx->begin; while (iter) { NK_ASSERT(iter != iter->next); if (iter->name == hash) { int max_len = nk_strlen(iter->name_string); if (!nk_stricmpn(iter->name_string, name, max_len)) return iter; } iter = iter->next; } return 0; } NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc) { const struct nk_window *iter; NK_ASSERT(ctx); NK_ASSERT(win); if (!win || !ctx) return; iter = ctx->begin; while (iter) { NK_ASSERT(iter != iter->next); NK_ASSERT(iter != win); if (iter == win) return; iter = iter->next; } if (!ctx->begin) { win->next = 0; win->prev = 0; ctx->begin = win; ctx->end = win; ctx->count = 1; return; } if (loc == NK_INSERT_BACK) { struct nk_window *end; end = ctx->end; end->flags |= NK_WINDOW_ROM; end->next = win; win->prev = ctx->end; win->next = 0; ctx->end = win; ctx->active = ctx->end; ctx->end->flags &= ~(nk_flags)NK_WINDOW_ROM; } else { /*ctx->end->flags |= NK_WINDOW_ROM;*/ ctx->begin->prev = win; win->next = ctx->begin; win->prev = 0; ctx->begin = win; ctx->begin->flags &= ~(nk_flags)NK_WINDOW_ROM; } ctx->count++; } NK_LIB void nk_remove_window(struct nk_context *ctx, struct nk_window *win) { if (win == ctx->begin || win == ctx->end) { if (win == ctx->begin) { ctx->begin = win->next; if (win->next) win->next->prev = 0; } if (win == ctx->end) { ctx->end = win->prev; if (win->prev) win->prev->next = 0; } } else { if (win->next) win->next->prev = win->prev; if (win->prev) win->prev->next = win->next; } if (win == ctx->active || !ctx->active) { ctx->active = ctx->end; if (ctx->end) ctx->end->flags &= ~(nk_flags)NK_WINDOW_ROM; } win->next = 0; win->prev = 0; ctx->count--; } NK_API int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags) { return nk_begin_titled(ctx, title, title, bounds, flags); } NK_API int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags) { struct nk_window *win; struct nk_style *style; nk_hash name_hash; int name_len; int ret = 0; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(title); NK_ASSERT(ctx->style.font && ctx->style.font->width && "if this triggers you forgot to add a font"); NK_ASSERT(!ctx->current && "if this triggers you missed a `nk_end` call"); if (!ctx || ctx->current || !title || !name) return 0; /* find or create window */ style = &ctx->style; name_len = (int)nk_strlen(name); name_hash = nk_murmur_hash(name, (int)name_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, name_hash, name); if (!win) { /* create new window */ nk_size name_length = (nk_size)name_len; win = (struct nk_window*)nk_create_window(ctx); NK_ASSERT(win); if (!win) return 0; if (flags & NK_WINDOW_BACKGROUND) nk_insert_window(ctx, win, NK_INSERT_FRONT); else nk_insert_window(ctx, win, NK_INSERT_BACK); nk_command_buffer_init(&win->buffer, &ctx->memory, NK_CLIPPING_ON); win->flags = flags; win->bounds = bounds; win->name = name_hash; name_length = NK_MIN(name_length, NK_WINDOW_MAX_NAME-1); NK_MEMCPY(win->name_string, name, name_length); win->name_string[name_length] = 0; win->popup.win = 0; if (!ctx->active) ctx->active = win; } else { /* update window */ win->flags &= ~(nk_flags)(NK_WINDOW_PRIVATE-1); win->flags |= flags; if (!(win->flags & (NK_WINDOW_MOVABLE | NK_WINDOW_SCALABLE))) win->bounds = bounds; /* If this assert triggers you either: * * I.) Have more than one window with the same name or * II.) You forgot to actually draw the window. * More specific you did not call `nk_clear` (nk_clear will be * automatically called for you if you are using one of the * provided demo backends). */ NK_ASSERT(win->seq != ctx->seq); win->seq = ctx->seq; if (!ctx->active && !(win->flags & NK_WINDOW_HIDDEN)) { ctx->active = win; ctx->end = win; } } if (win->flags & NK_WINDOW_HIDDEN) { ctx->current = win; win->layout = 0; return 0; } else nk_start(ctx, win); /* window overlapping */ if (!(win->flags & NK_WINDOW_HIDDEN) && !(win->flags & NK_WINDOW_NO_INPUT)) { int inpanel, ishovered; struct nk_window *iter = win; float h = ctx->style.font->height + 2.0f * style->window.header.padding.y + (2.0f * style->window.header.label_padding.y); struct nk_rect win_bounds = (!(win->flags & NK_WINDOW_MINIMIZED))? win->bounds: nk_rect(win->bounds.x, win->bounds.y, win->bounds.w, h); /* activate window if hovered and no other window is overlapping this window */ inpanel = nk_input_has_mouse_click_down_in_rect(&ctx->input, NK_BUTTON_LEFT, win_bounds, nk_true); inpanel = inpanel && ctx->input.mouse.buttons[NK_BUTTON_LEFT].clicked; ishovered = nk_input_is_mouse_hovering_rect(&ctx->input, win_bounds); if ((win != ctx->active) && ishovered && !ctx->input.mouse.buttons[NK_BUTTON_LEFT].down) { iter = win->next; while (iter) { struct nk_rect iter_bounds = (!(iter->flags & NK_WINDOW_MINIMIZED))? iter->bounds: nk_rect(iter->bounds.x, iter->bounds.y, iter->bounds.w, h); if (NK_INTERSECT(win_bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter_bounds.x, iter_bounds.y, iter_bounds.w, iter_bounds.h) && (!(iter->flags & NK_WINDOW_HIDDEN))) break; if (iter->popup.win && iter->popup.active && !(iter->flags & NK_WINDOW_HIDDEN) && NK_INTERSECT(win->bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter->popup.win->bounds.x, iter->popup.win->bounds.y, iter->popup.win->bounds.w, iter->popup.win->bounds.h)) break; iter = iter->next; } } /* activate window if clicked */ if (iter && inpanel && (win != ctx->end)) { iter = win->next; while (iter) { /* try to find a panel with higher priority in the same position */ struct nk_rect iter_bounds = (!(iter->flags & NK_WINDOW_MINIMIZED))? iter->bounds: nk_rect(iter->bounds.x, iter->bounds.y, iter->bounds.w, h); if (NK_INBOX(ctx->input.mouse.pos.x, ctx->input.mouse.pos.y, iter_bounds.x, iter_bounds.y, iter_bounds.w, iter_bounds.h) && !(iter->flags & NK_WINDOW_HIDDEN)) break; if (iter->popup.win && iter->popup.active && !(iter->flags & NK_WINDOW_HIDDEN) && NK_INTERSECT(win_bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter->popup.win->bounds.x, iter->popup.win->bounds.y, iter->popup.win->bounds.w, iter->popup.win->bounds.h)) break; iter = iter->next; } } if (iter && !(win->flags & NK_WINDOW_ROM) && (win->flags & NK_WINDOW_BACKGROUND)) { win->flags |= (nk_flags)NK_WINDOW_ROM; iter->flags &= ~(nk_flags)NK_WINDOW_ROM; ctx->active = iter; if (!(iter->flags & NK_WINDOW_BACKGROUND)) { /* current window is active in that position so transfer to top * at the highest priority in stack */ nk_remove_window(ctx, iter); nk_insert_window(ctx, iter, NK_INSERT_BACK); } } else { if (!iter && ctx->end != win) { if (!(win->flags & NK_WINDOW_BACKGROUND)) { /* current window is active in that position so transfer to top * at the highest priority in stack */ nk_remove_window(ctx, win); nk_insert_window(ctx, win, NK_INSERT_BACK); } win->flags &= ~(nk_flags)NK_WINDOW_ROM; ctx->active = win; } if (ctx->end != win && !(win->flags & NK_WINDOW_BACKGROUND)) win->flags |= NK_WINDOW_ROM; } } win->layout = (struct nk_panel*)nk_create_panel(ctx); ctx->current = win; ret = nk_panel_begin(ctx, title, NK_PANEL_WINDOW); win->layout->offset_x = &win->scrollbar.x; win->layout->offset_y = &win->scrollbar.y; return ret; } NK_API void nk_end(struct nk_context *ctx) { struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current && "if this triggers you forgot to call `nk_begin`"); if (!ctx || !ctx->current) return; layout = ctx->current->layout; if (!layout || (layout->type == NK_PANEL_WINDOW && (ctx->current->flags & NK_WINDOW_HIDDEN))) { ctx->current = 0; return; } nk_panel_end(ctx); nk_free_panel(ctx, ctx->current->layout); ctx->current = 0; } NK_API struct nk_rect nk_window_get_bounds(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); return ctx->current->bounds; } NK_API struct nk_vec2 nk_window_get_position(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->bounds.x, ctx->current->bounds.y); } NK_API struct nk_vec2 nk_window_get_size(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->bounds.w, ctx->current->bounds.h); } NK_API float nk_window_get_width(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->bounds.w; } NK_API float nk_window_get_height(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->bounds.h; } NK_API struct nk_rect nk_window_get_content_region(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); return ctx->current->layout->clip; } NK_API struct nk_vec2 nk_window_get_content_region_min(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.x, ctx->current->layout->clip.y); } NK_API struct nk_vec2 nk_window_get_content_region_max(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.x + ctx->current->layout->clip.w, ctx->current->layout->clip.y + ctx->current->layout->clip.h); } NK_API struct nk_vec2 nk_window_get_content_region_size(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.w, ctx->current->layout->clip.h); } NK_API struct nk_command_buffer* nk_window_get_canvas(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return 0; return &ctx->current->buffer; } NK_API struct nk_panel* nk_window_get_panel(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->layout; } NK_API void nk_window_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return ; win = ctx->current; if (offset_x) *offset_x = win->scrollbar.x; if (offset_y) *offset_y = win->scrollbar.y; } NK_API int nk_window_has_focus(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return 0; return ctx->current == ctx->active; } NK_API int nk_window_is_hovered(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; if(ctx->current->flags & NK_WINDOW_HIDDEN) return 0; return nk_input_is_mouse_hovering_rect(&ctx->input, ctx->current->bounds); } NK_API int nk_window_is_any_hovered(struct nk_context *ctx) { struct nk_window *iter; NK_ASSERT(ctx); if (!ctx) return 0; iter = ctx->begin; while (iter) { /* check if window is being hovered */ if(!(iter->flags & NK_WINDOW_HIDDEN)) { /* check if window popup is being hovered */ if (iter->popup.active && iter->popup.win && nk_input_is_mouse_hovering_rect(&ctx->input, iter->popup.win->bounds)) return 1; if (iter->flags & NK_WINDOW_MINIMIZED) { struct nk_rect header = iter->bounds; header.h = ctx->style.font->height + 2 * ctx->style.window.header.padding.y; if (nk_input_is_mouse_hovering_rect(&ctx->input, header)) return 1; } else if (nk_input_is_mouse_hovering_rect(&ctx->input, iter->bounds)) { return 1; } } iter = iter->next; } return 0; } NK_API int nk_item_is_any_active(struct nk_context *ctx) { int any_hovered = nk_window_is_any_hovered(ctx); int any_active = (ctx->last_widget_state & NK_WIDGET_STATE_MODIFIED); return any_hovered || any_active; } NK_API int nk_window_is_collapsed(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 0; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 0; return win->flags & NK_WINDOW_MINIMIZED; } NK_API int nk_window_is_closed(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 1; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 1; return (win->flags & NK_WINDOW_CLOSED); } NK_API int nk_window_is_hidden(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 1; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 1; return (win->flags & NK_WINDOW_HIDDEN); } NK_API int nk_window_is_active(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 0; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 0; return win == ctx->active; } NK_API struct nk_window* nk_window_find(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); return nk_find_window(ctx, title_hash, name); } NK_API void nk_window_close(struct nk_context *ctx, const char *name) { struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; win = nk_window_find(ctx, name); if (!win) return; NK_ASSERT(ctx->current != win && "You cannot close a currently active window"); if (ctx->current == win) return; win->flags |= NK_WINDOW_HIDDEN; win->flags |= NK_WINDOW_CLOSED; } NK_API void nk_window_set_bounds(struct nk_context *ctx, const char *name, struct nk_rect bounds) { struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; win = nk_window_find(ctx, name); if (!win) return; NK_ASSERT(ctx->current != win && "You cannot update a currently in procecss window"); win->bounds = bounds; } NK_API void nk_window_set_position(struct nk_context *ctx, const char *name, struct nk_vec2 pos) { struct nk_window *win = nk_window_find(ctx, name); if (!win) return; win->bounds.x = pos.x; win->bounds.y = pos.y; } NK_API void nk_window_set_size(struct nk_context *ctx, const char *name, struct nk_vec2 size) { struct nk_window *win = nk_window_find(ctx, name); if (!win) return; win->bounds.w = size.x; win->bounds.h = size.y; } NK_API void nk_window_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; win->scrollbar.x = offset_x; win->scrollbar.y = offset_y; } NK_API void nk_window_collapse(struct nk_context *ctx, const char *name, enum nk_collapse_states c) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return; if (c == NK_MINIMIZED) win->flags |= NK_WINDOW_MINIMIZED; else win->flags &= ~(nk_flags)NK_WINDOW_MINIMIZED; } NK_API void nk_window_collapse_if(struct nk_context *ctx, const char *name, enum nk_collapse_states c, int cond) { NK_ASSERT(ctx); if (!ctx || !cond) return; nk_window_collapse(ctx, name, c); } NK_API void nk_window_show(struct nk_context *ctx, const char *name, enum nk_show_states s) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return; if (s == NK_HIDDEN) { win->flags |= NK_WINDOW_HIDDEN; } else win->flags &= ~(nk_flags)NK_WINDOW_HIDDEN; } NK_API void nk_window_show_if(struct nk_context *ctx, const char *name, enum nk_show_states s, int cond) { NK_ASSERT(ctx); if (!ctx || !cond) return; nk_window_show(ctx, name, s); } NK_API void nk_window_set_focus(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (win && ctx->end != win) { nk_remove_window(ctx, win); nk_insert_window(ctx, win, NK_INSERT_BACK); } ctx->active = win; } /* =============================================================== * * POPUP * * ===============================================================*/ NK_API int nk_popup_begin(struct nk_context *ctx, enum nk_popup_type type, const char *title, nk_flags flags, struct nk_rect rect) { struct nk_window *popup; struct nk_window *win; struct nk_panel *panel; int title_len; nk_hash title_hash; nk_size allocated; NK_ASSERT(ctx); NK_ASSERT(title); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; panel = win->layout; NK_ASSERT(!(panel->type & NK_PANEL_SET_POPUP) && "popups are not allowed to have popups"); (void)panel; title_len = (int)nk_strlen(title); title_hash = nk_murmur_hash(title, (int)title_len, NK_PANEL_POPUP); popup = win->popup.win; if (!popup) { popup = (struct nk_window*)nk_create_window(ctx); popup->parent = win; win->popup.win = popup; win->popup.active = 0; win->popup.type = NK_PANEL_POPUP; } /* make sure we have correct popup */ if (win->popup.name != title_hash) { if (!win->popup.active) { nk_zero(popup, sizeof(*popup)); win->popup.name = title_hash; win->popup.active = 1; win->popup.type = NK_PANEL_POPUP; } else return 0; } /* popup position is local to window */ ctx->current = popup; rect.x += win->layout->clip.x; rect.y += win->layout->clip.y; /* setup popup data */ popup->parent = win; popup->bounds = rect; popup->seq = ctx->seq; popup->layout = (struct nk_panel*)nk_create_panel(ctx); popup->flags = flags; popup->flags |= NK_WINDOW_BORDER; if (type == NK_POPUP_DYNAMIC) popup->flags |= NK_WINDOW_DYNAMIC; popup->buffer = win->buffer; nk_start_popup(ctx, win); allocated = ctx->memory.allocated; nk_push_scissor(&popup->buffer, nk_null_rect); if (nk_panel_begin(ctx, title, NK_PANEL_POPUP)) { /* popup is running therefore invalidate parent panels */ struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_ROM; root->flags &= ~(nk_flags)NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.active = 1; popup->layout->offset_x = &popup->scrollbar.x; popup->layout->offset_y = &popup->scrollbar.y; popup->layout->parent = win->layout; return 1; } else { /* popup was closed/is invalid so cleanup */ struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.buf.active = 0; win->popup.active = 0; ctx->memory.allocated = allocated; ctx->current = win; nk_free_panel(ctx, popup->layout); popup->layout = 0; return 0; } } NK_LIB int nk_nonblock_begin(struct nk_context *ctx, nk_flags flags, struct nk_rect body, struct nk_rect header, enum nk_panel_type panel_type) { struct nk_window *popup; struct nk_window *win; struct nk_panel *panel; int is_active = nk_true; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* popups cannot have popups */ win = ctx->current; panel = win->layout; NK_ASSERT(!(panel->type & NK_PANEL_SET_POPUP)); (void)panel; popup = win->popup.win; if (!popup) { /* create window for nonblocking popup */ popup = (struct nk_window*)nk_create_window(ctx); popup->parent = win; win->popup.win = popup; win->popup.type = panel_type; nk_command_buffer_init(&popup->buffer, &ctx->memory, NK_CLIPPING_ON); } else { /* close the popup if user pressed outside or in the header */ int pressed, in_body, in_header; #ifdef NK_BUTTON_TRIGGER_ON_RELEASE pressed = nk_input_is_mouse_released(&ctx->input, NK_BUTTON_LEFT); #else pressed = nk_input_is_mouse_pressed(&ctx->input, NK_BUTTON_LEFT); #endif in_body = nk_input_is_mouse_hovering_rect(&ctx->input, body); in_header = nk_input_is_mouse_hovering_rect(&ctx->input, header); if (pressed && (!in_body || in_header)) is_active = nk_false; } win->popup.header = header; if (!is_active) { /* remove read only mode from all parent panels */ struct nk_panel *root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } return is_active; } popup->bounds = body; popup->parent = win; popup->layout = (struct nk_panel*)nk_create_panel(ctx); popup->flags = flags; popup->flags |= NK_WINDOW_BORDER; popup->flags |= NK_WINDOW_DYNAMIC; popup->seq = ctx->seq; win->popup.active = 1; NK_ASSERT(popup->layout); nk_start_popup(ctx, win); popup->buffer = win->buffer; nk_push_scissor(&popup->buffer, nk_null_rect); ctx->current = popup; nk_panel_begin(ctx, 0, panel_type); win->buffer = popup->buffer; popup->layout->parent = win->layout; popup->layout->offset_x = &popup->scrollbar.x; popup->layout->offset_y = &popup->scrollbar.y; /* set read only mode to all parent panels */ {struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_ROM; root = root->parent; }} return is_active; } NK_API void nk_popup_close(struct nk_context *ctx) { struct nk_window *popup; NK_ASSERT(ctx); if (!ctx || !ctx->current) return; popup = ctx->current; NK_ASSERT(popup->parent); NK_ASSERT(popup->layout->type & NK_PANEL_SET_POPUP); popup->flags |= NK_WINDOW_HIDDEN; } NK_API void nk_popup_end(struct nk_context *ctx) { struct nk_window *win; struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; if (!popup->parent) return; win = popup->parent; if (popup->flags & NK_WINDOW_HIDDEN) { struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.active = 0; } nk_push_scissor(&popup->buffer, nk_null_rect); nk_end(ctx); win->buffer = popup->buffer; nk_finish_popup(ctx, win); ctx->current = win; nk_push_scissor(&win->buffer, win->layout->clip); } NK_API void nk_popup_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y) { struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; if (offset_x) *offset_x = popup->scrollbar.x; if (offset_y) *offset_y = popup->scrollbar.y; } NK_API void nk_popup_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y) { struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; popup->scrollbar.x = offset_x; popup->scrollbar.y = offset_y; } /* ============================================================== * * CONTEXTUAL * * ===============================================================*/ NK_API int nk_contextual_begin(struct nk_context *ctx, nk_flags flags, struct nk_vec2 size, struct nk_rect trigger_bounds) { struct nk_window *win; struct nk_window *popup; struct nk_rect body; NK_STORAGE const struct nk_rect null_rect = {-1,-1,0,0}; int is_clicked = 0; int is_open = 0; int ret = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; ++win->popup.con_count; if (ctx->current != ctx->active) return 0; /* check if currently active contextual is active */ popup = win->popup.win; is_open = (popup && win->popup.type == NK_PANEL_CONTEXTUAL); is_clicked = nk_input_mouse_clicked(&ctx->input, NK_BUTTON_RIGHT, trigger_bounds); if (win->popup.active_con && win->popup.con_count != win->popup.active_con) return 0; if (!is_open && win->popup.active_con) win->popup.active_con = 0; if ((!is_open && !is_clicked)) return 0; /* calculate contextual position on click */ win->popup.active_con = win->popup.con_count; if (is_clicked) { body.x = ctx->input.mouse.pos.x; body.y = ctx->input.mouse.pos.y; } else { body.x = popup->bounds.x; body.y = popup->bounds.y; } body.w = size.x; body.h = size.y; /* start nonblocking contextual popup */ ret = nk_nonblock_begin(ctx, flags|NK_WINDOW_NO_SCROLLBAR, body, null_rect, NK_PANEL_CONTEXTUAL); if (ret) win->popup.type = NK_PANEL_CONTEXTUAL; else { win->popup.active_con = 0; win->popup.type = NK_PANEL_NONE; if (win->popup.win) win->popup.win->flags = 0; } return ret; } NK_API int nk_contextual_item_text(struct nk_context *ctx, const char *text, int len, nk_flags alignment) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text(&ctx->last_widget_state, &win->buffer, bounds, text, len, alignment, NK_BUTTON_DEFAULT, &style->contextual_button, in, style->font)) { nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_text(ctx, label, nk_strlen(label), align); } NK_API int nk_contextual_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, bounds, img, text, len, align, NK_BUTTON_DEFAULT, &style->contextual_button, style->font, in)){ nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_contextual_item_image_text(ctx, img, label, nk_strlen(label), align); } NK_API int nk_contextual_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type symbol, const char *text, int len, nk_flags align) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, text, len, align, NK_BUTTON_DEFAULT, &style->contextual_button, style->font, in)) { nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type symbol, const char *text, nk_flags align) { return nk_contextual_item_symbol_text(ctx, symbol, text, nk_strlen(text), align); } NK_API void nk_contextual_close(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; nk_popup_close(ctx); } NK_API void nk_contextual_end(struct nk_context *ctx) { struct nk_window *popup; struct nk_panel *panel; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; popup = ctx->current; panel = popup->layout; NK_ASSERT(popup->parent); NK_ASSERT(panel->type & NK_PANEL_SET_POPUP); if (panel->flags & NK_WINDOW_DYNAMIC) { /* Close behavior This is a bit of a hack solution since we do not know before we end our popup how big it will be. We therefore do not directly know when a click outside the non-blocking popup must close it at that direct frame. Instead it will be closed in the next frame.*/ struct nk_rect body = {0,0,0,0}; if (panel->at_y < (panel->bounds.y + panel->bounds.h)) { struct nk_vec2 padding = nk_panel_get_padding(&ctx->style, panel->type); body = panel->bounds; body.y = (panel->at_y + panel->footer_height + panel->border + padding.y + panel->row.height); body.h = (panel->bounds.y + panel->bounds.h) - body.y; } {int pressed = nk_input_is_mouse_pressed(&ctx->input, NK_BUTTON_LEFT); int in_body = nk_input_is_mouse_hovering_rect(&ctx->input, body); if (pressed && in_body) popup->flags |= NK_WINDOW_HIDDEN; } } if (popup->flags & NK_WINDOW_HIDDEN) popup->seq = 0; nk_popup_end(ctx); return; } /* =============================================================== * * MENU * * ===============================================================*/ NK_API void nk_menubar_begin(struct nk_context *ctx) { struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; layout = ctx->current->layout; NK_ASSERT(layout->at_y == layout->bounds.y); /* if this assert triggers you allocated space between nk_begin and nk_menubar_begin. If you want a menubar the first nuklear function after `nk_begin` has to be a `nk_menubar_begin` call. Inside the menubar you then have to allocate space for widgets (also supports multiple rows). Example: if (nk_begin(...)) { nk_menubar_begin(...); nk_layout_xxxx(...); nk_button(...); nk_layout_xxxx(...); nk_button(...); nk_menubar_end(...); } nk_end(...); */ if (layout->flags & NK_WINDOW_HIDDEN || layout->flags & NK_WINDOW_MINIMIZED) return; layout->menu.x = layout->at_x; layout->menu.y = layout->at_y + layout->row.height; layout->menu.w = layout->bounds.w; layout->menu.offset.x = *layout->offset_x; layout->menu.offset.y = *layout->offset_y; *layout->offset_y = 0; } NK_API void nk_menubar_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; struct nk_command_buffer *out; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; out = &win->buffer; layout = win->layout; if (layout->flags & NK_WINDOW_HIDDEN || layout->flags & NK_WINDOW_MINIMIZED) return; layout->menu.h = layout->at_y - layout->menu.y; layout->bounds.y += layout->menu.h + ctx->style.window.spacing.y + layout->row.height; layout->bounds.h -= layout->menu.h + ctx->style.window.spacing.y + layout->row.height; *layout->offset_x = layout->menu.offset.x; *layout->offset_y = layout->menu.offset.y; layout->at_y = layout->bounds.y - layout->row.height; layout->clip.y = layout->bounds.y; layout->clip.h = layout->bounds.h; nk_push_scissor(out, layout->clip); } NK_INTERN int nk_menu_begin(struct nk_context *ctx, struct nk_window *win, const char *id, int is_clicked, struct nk_rect header, struct nk_vec2 size) { int is_open = 0; int is_active = 0; struct nk_rect body; struct nk_window *popup; nk_hash hash = nk_murmur_hash(id, (int)nk_strlen(id), NK_PANEL_MENU); NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; body.x = header.x; body.w = size.x; body.y = header.y + header.h; body.h = size.y; popup = win->popup.win; is_open = popup ? nk_true : nk_false; is_active = (popup && (win->popup.name == hash) && win->popup.type == NK_PANEL_MENU); if ((is_clicked && is_open && !is_active) || (is_open && !is_active) || (!is_open && !is_active && !is_clicked)) return 0; if (!nk_nonblock_begin(ctx, NK_WINDOW_NO_SCROLLBAR, body, header, NK_PANEL_MENU)) return 0; win->popup.type = NK_PANEL_MENU; win->popup.name = hash; return 1; } NK_API int nk_menu_begin_text(struct nk_context *ctx, const char *title, int len, nk_flags align, struct nk_vec2 size) { struct nk_window *win; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text(&ctx->last_widget_state, &win->buffer, header, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in, ctx->style.font)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_label(struct nk_context *ctx, const char *text, nk_flags align, struct nk_vec2 size) { return nk_menu_begin_text(ctx, text, nk_strlen(text), align, size); } NK_API int nk_menu_begin_image(struct nk_context *ctx, const char *id, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_image(&ctx->last_widget_state, &win->buffer, header, img, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, id, is_clicked, header, size); } NK_API int nk_menu_begin_symbol(struct nk_context *ctx, const char *id, enum nk_symbol_type sym, struct nk_vec2 size) { struct nk_window *win; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_symbol(&ctx->last_widget_state, &win->buffer, header, sym, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in, ctx->style.font)) is_clicked = nk_true; return nk_menu_begin(ctx, win, id, is_clicked, header, size); } NK_API int nk_menu_begin_image_text(struct nk_context *ctx, const char *title, int len, nk_flags align, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, header, img, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, ctx->style.font, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_image_label(struct nk_context *ctx, const char *title, nk_flags align, struct nk_image img, struct nk_vec2 size) { return nk_menu_begin_image_text(ctx, title, nk_strlen(title), align, img, size); } NK_API int nk_menu_begin_symbol_text(struct nk_context *ctx, const char *title, int len, nk_flags align, enum nk_symbol_type sym, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, header, sym, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, ctx->style.font, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_symbol_label(struct nk_context *ctx, const char *title, nk_flags align, enum nk_symbol_type sym, struct nk_vec2 size ) { return nk_menu_begin_symbol_text(ctx, title, nk_strlen(title), align,sym,size); } NK_API int nk_menu_item_text(struct nk_context *ctx, const char *title, int len, nk_flags align) { return nk_contextual_item_text(ctx, title, len, align); } NK_API int nk_menu_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_label(ctx, label, align); } NK_API int nk_menu_item_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_contextual_item_image_label(ctx, img, label, align); } NK_API int nk_menu_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { return nk_contextual_item_image_text(ctx, img, text, len, align); } NK_API int nk_menu_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *text, int len, nk_flags align) { return nk_contextual_item_symbol_text(ctx, sym, text, len, align); } NK_API int nk_menu_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *label, nk_flags align) { return nk_contextual_item_symbol_label(ctx, sym, label, align); } NK_API void nk_menu_close(struct nk_context *ctx) { nk_contextual_close(ctx); } NK_API void nk_menu_end(struct nk_context *ctx) { nk_contextual_end(ctx); } /* =============================================================== * * LAYOUT * * ===============================================================*/ NK_API void nk_layout_set_min_row_height(struct nk_context *ctx, float height) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.min_height = height; } NK_API void nk_layout_reset_min_row_height(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.min_height = ctx->style.font->height; layout->row.min_height += ctx->style.text.padding.y*2; layout->row.min_height += ctx->style.window.min_row_height_padding*2; } NK_LIB float nk_layout_row_calculate_usable_space(const struct nk_style *style, enum nk_panel_type type, float total_space, int columns) { float panel_padding; float panel_spacing; float panel_space; struct nk_vec2 spacing; struct nk_vec2 padding; spacing = style->window.spacing; padding = nk_panel_get_padding(style, type); /* calculate the usable panel space */ panel_padding = 2 * padding.x; panel_spacing = (float)NK_MAX(columns - 1, 0) * spacing.x; panel_space = total_space - panel_padding - panel_spacing; return panel_space; } NK_LIB void nk_panel_layout(const struct nk_context *ctx, struct nk_window *win, float height, int cols) { struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; struct nk_vec2 item_spacing; struct nk_color color; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* prefetch some configuration data */ layout = win->layout; style = &ctx->style; out = &win->buffer; color = style->window.background; item_spacing = style->window.spacing; /* if one of these triggers you forgot to add an `if` condition around either a window, group, popup, combobox or contextual menu `begin` and `end` block. Example: if (nk_begin(...) {...} nk_end(...); or if (nk_group_begin(...) { nk_group_end(...);} */ NK_ASSERT(!(layout->flags & NK_WINDOW_MINIMIZED)); NK_ASSERT(!(layout->flags & NK_WINDOW_HIDDEN)); NK_ASSERT(!(layout->flags & NK_WINDOW_CLOSED)); /* update the current row and set the current row layout */ layout->row.index = 0; layout->at_y += layout->row.height; layout->row.columns = cols; if (height == 0.0f) layout->row.height = NK_MAX(height, layout->row.min_height) + item_spacing.y; else layout->row.height = height + item_spacing.y; layout->row.item_offset = 0; if (layout->flags & NK_WINDOW_DYNAMIC) { /* draw background for dynamic panels */ struct nk_rect background; background.x = win->bounds.x; background.w = win->bounds.w; background.y = layout->at_y - 1.0f; background.h = layout->row.height + 1.0f; nk_fill_rect(out, background, 0, color); } } NK_LIB void nk_row_layout(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, int width) { /* update the current row and set the current row layout */ struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; nk_panel_layout(ctx, win, height, cols); if (fmt == NK_DYNAMIC) win->layout->row.type = NK_LAYOUT_DYNAMIC_FIXED; else win->layout->row.type = NK_LAYOUT_STATIC_FIXED; win->layout->row.ratio = 0; win->layout->row.filled = 0; win->layout->row.item_offset = 0; win->layout->row.item_width = (float)width; } NK_API float nk_layout_ratio_from_pixel(struct nk_context *ctx, float pixel_width) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(pixel_width); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; return NK_CLAMP(0.0f, pixel_width/win->bounds.x, 1.0f); } NK_API void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols) { nk_row_layout(ctx, NK_DYNAMIC, height, cols, 0); } NK_API void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols) { nk_row_layout(ctx, NK_STATIC, height, cols, item_width); } NK_API void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, row_height, cols); if (fmt == NK_DYNAMIC) layout->row.type = NK_LAYOUT_DYNAMIC_ROW; else layout->row.type = NK_LAYOUT_STATIC_ROW; layout->row.ratio = 0; layout->row.filled = 0; layout->row.item_width = 0; layout->row.item_offset = 0; layout->row.columns = cols; } NK_API void nk_layout_row_push(struct nk_context *ctx, float ratio_or_width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_STATIC_ROW || layout->row.type == NK_LAYOUT_DYNAMIC_ROW); if (layout->row.type != NK_LAYOUT_STATIC_ROW && layout->row.type != NK_LAYOUT_DYNAMIC_ROW) return; if (layout->row.type == NK_LAYOUT_DYNAMIC_ROW) { float ratio = ratio_or_width; if ((ratio + layout->row.filled) > 1.0f) return; if (ratio > 0.0f) layout->row.item_width = NK_SATURATE(ratio); else layout->row.item_width = 1.0f - layout->row.filled; } else layout->row.item_width = ratio_or_width; } NK_API void nk_layout_row_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_STATIC_ROW || layout->row.type == NK_LAYOUT_DYNAMIC_ROW); if (layout->row.type != NK_LAYOUT_STATIC_ROW && layout->row.type != NK_LAYOUT_DYNAMIC_ROW) return; layout->row.item_width = 0; layout->row.item_offset = 0; } NK_API void nk_layout_row(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, const float *ratio) { int i; int n_undef = 0; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, cols); if (fmt == NK_DYNAMIC) { /* calculate width of undefined widget ratios */ float r = 0; layout->row.ratio = ratio; for (i = 0; i < cols; ++i) { if (ratio[i] < 0.0f) n_undef++; else r += ratio[i]; } r = NK_SATURATE(1.0f - r); layout->row.type = NK_LAYOUT_DYNAMIC; layout->row.item_width = (r > 0 && n_undef > 0) ? (r / (float)n_undef):0; } else { layout->row.ratio = ratio; layout->row.type = NK_LAYOUT_STATIC; layout->row.item_width = 0; layout->row.item_offset = 0; } layout->row.item_offset = 0; layout->row.filled = 0; } NK_API void nk_layout_row_template_begin(struct nk_context *ctx, float height) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, 1); layout->row.type = NK_LAYOUT_TEMPLATE; layout->row.columns = 0; layout->row.ratio = 0; layout->row.item_width = 0; layout->row.item_height = 0; layout->row.item_offset = 0; layout->row.filled = 0; layout->row.item.x = 0; layout->row.item.y = 0; layout->row.item.w = 0; layout->row.item.h = 0; } NK_API void nk_layout_row_template_push_dynamic(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = -1.0f; } NK_API void nk_layout_row_template_push_variable(struct nk_context *ctx, float min_width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = -min_width; } NK_API void nk_layout_row_template_push_static(struct nk_context *ctx, float width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = width; } NK_API void nk_layout_row_template_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; int i = 0; int variable_count = 0; int min_variable_count = 0; float min_fixed_width = 0.0f; float total_fixed_width = 0.0f; float max_variable_width = 0.0f; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; for (i = 0; i < layout->row.columns; ++i) { float width = layout->row.templates[i]; if (width >= 0.0f) { total_fixed_width += width; min_fixed_width += width; } else if (width < -1.0f) { width = -width; total_fixed_width += width; max_variable_width = NK_MAX(max_variable_width, width); variable_count++; } else { min_variable_count++; variable_count++; } } if (variable_count) { float space = nk_layout_row_calculate_usable_space(&ctx->style, layout->type, layout->bounds.w, layout->row.columns); float var_width = (NK_MAX(space-min_fixed_width,0.0f)) / (float)variable_count; int enough_space = var_width >= max_variable_width; if (!enough_space) var_width = (NK_MAX(space-total_fixed_width,0)) / (float)min_variable_count; for (i = 0; i < layout->row.columns; ++i) { float *width = &layout->row.templates[i]; *width = (*width >= 0.0f)? *width: (*width < -1.0f && !enough_space)? -(*width): var_width; } } } NK_API void nk_layout_space_begin(struct nk_context *ctx, enum nk_layout_format fmt, float height, int widget_count) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, widget_count); if (fmt == NK_STATIC) layout->row.type = NK_LAYOUT_STATIC_FREE; else layout->row.type = NK_LAYOUT_DYNAMIC_FREE; layout->row.ratio = 0; layout->row.filled = 0; layout->row.item_width = 0; layout->row.item_offset = 0; } NK_API void nk_layout_space_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.item_width = 0; layout->row.item_height = 0; layout->row.item_offset = 0; nk_zero(&layout->row.item, sizeof(layout->row.item)); } NK_API void nk_layout_space_push(struct nk_context *ctx, struct nk_rect rect) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.item = rect; } NK_API struct nk_rect nk_layout_space_bounds(struct nk_context *ctx) { struct nk_rect ret; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x = layout->clip.x; ret.y = layout->clip.y; ret.w = layout->clip.w; ret.h = layout->row.height; return ret; } NK_API struct nk_rect nk_layout_widget_bounds(struct nk_context *ctx) { struct nk_rect ret; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x = layout->at_x; ret.y = layout->at_y; ret.w = layout->bounds.w - NK_MAX(layout->at_x - layout->bounds.x,0); ret.h = layout->row.height; return ret; } NK_API struct nk_vec2 nk_layout_space_to_screen(struct nk_context *ctx, struct nk_vec2 ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += layout->at_x - (float)*layout->offset_x; ret.y += layout->at_y - (float)*layout->offset_y; return ret; } NK_API struct nk_vec2 nk_layout_space_to_local(struct nk_context *ctx, struct nk_vec2 ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += -layout->at_x + (float)*layout->offset_x; ret.y += -layout->at_y + (float)*layout->offset_y; return ret; } NK_API struct nk_rect nk_layout_space_rect_to_screen(struct nk_context *ctx, struct nk_rect ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += layout->at_x - (float)*layout->offset_x; ret.y += layout->at_y - (float)*layout->offset_y; return ret; } NK_API struct nk_rect nk_layout_space_rect_to_local(struct nk_context *ctx, struct nk_rect ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += -layout->at_x + (float)*layout->offset_x; ret.y += -layout->at_y + (float)*layout->offset_y; return ret; } NK_LIB void nk_panel_alloc_row(const struct nk_context *ctx, struct nk_window *win) { struct nk_panel *layout = win->layout; struct nk_vec2 spacing = ctx->style.window.spacing; const float row_height = layout->row.height - spacing.y; nk_panel_layout(ctx, win, row_height, layout->row.columns); } NK_LIB void nk_layout_widget_space(struct nk_rect *bounds, const struct nk_context *ctx, struct nk_window *win, int modify) { struct nk_panel *layout; const struct nk_style *style; struct nk_vec2 spacing; struct nk_vec2 padding; float item_offset = 0; float item_width = 0; float item_spacing = 0; float panel_space = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; style = &ctx->style; NK_ASSERT(bounds); spacing = style->window.spacing; padding = nk_panel_get_padding(style, layout->type); panel_space = nk_layout_row_calculate_usable_space(&ctx->style, layout->type, layout->bounds.w, layout->row.columns); #define NK_FRAC(x) (x - (int)x) /* will be used to remove fookin gaps */ /* calculate the width of one item inside the current layout space */ switch (layout->row.type) { case NK_LAYOUT_DYNAMIC_FIXED: { /* scaling fixed size widgets item width */ float w = NK_MAX(1.0f,panel_space) / (float)layout->row.columns; item_offset = (float)layout->row.index * w; item_width = w + NK_FRAC(item_offset); item_spacing = (float)layout->row.index * spacing.x; } break; case NK_LAYOUT_DYNAMIC_ROW: { /* scaling single ratio widget width */ float w = layout->row.item_width * panel_space; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); item_spacing = 0; if (modify) { layout->row.item_offset += w + spacing.x; layout->row.filled += layout->row.item_width; layout->row.index = 0; } } break; case NK_LAYOUT_DYNAMIC_FREE: { /* panel width depended free widget placing */ bounds->x = layout->at_x + (layout->bounds.w * layout->row.item.x); bounds->x -= (float)*layout->offset_x; bounds->y = layout->at_y + (layout->row.height * layout->row.item.y); bounds->y -= (float)*layout->offset_y; bounds->w = layout->bounds.w * layout->row.item.w + NK_FRAC(bounds->x); bounds->h = layout->row.height * layout->row.item.h + NK_FRAC(bounds->y); return; } case NK_LAYOUT_DYNAMIC: { /* scaling arrays of panel width ratios for every widget */ float ratio, w; NK_ASSERT(layout->row.ratio); ratio = (layout->row.ratio[layout->row.index] < 0) ? layout->row.item_width : layout->row.ratio[layout->row.index]; w = (ratio * panel_space); item_spacing = (float)layout->row.index * spacing.x; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); if (modify) { layout->row.item_offset += w; layout->row.filled += ratio; } } break; case NK_LAYOUT_STATIC_FIXED: { /* non-scaling fixed widgets item width */ item_width = layout->row.item_width; item_offset = (float)layout->row.index * item_width; item_spacing = (float)layout->row.index * spacing.x; } break; case NK_LAYOUT_STATIC_ROW: { /* scaling single ratio widget width */ item_width = layout->row.item_width; item_offset = layout->row.item_offset; item_spacing = (float)layout->row.index * spacing.x; if (modify) layout->row.item_offset += item_width; } break; case NK_LAYOUT_STATIC_FREE: { /* free widget placing */ bounds->x = layout->at_x + layout->row.item.x; bounds->w = layout->row.item.w; if (((bounds->x + bounds->w) > layout->max_x) && modify) layout->max_x = (bounds->x + bounds->w); bounds->x -= (float)*layout->offset_x; bounds->y = layout->at_y + layout->row.item.y; bounds->y -= (float)*layout->offset_y; bounds->h = layout->row.item.h; return; } case NK_LAYOUT_STATIC: { /* non-scaling array of panel pixel width for every widget */ item_spacing = (float)layout->row.index * spacing.x; item_width = layout->row.ratio[layout->row.index]; item_offset = layout->row.item_offset; if (modify) layout->row.item_offset += item_width; } break; case NK_LAYOUT_TEMPLATE: { /* stretchy row layout with combined dynamic/static widget width*/ float w; NK_ASSERT(layout->row.index < layout->row.columns); NK_ASSERT(layout->row.index < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); w = layout->row.templates[layout->row.index]; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); item_spacing = (float)layout->row.index * spacing.x; if (modify) layout->row.item_offset += w; } break; #undef NK_FRAC default: NK_ASSERT(0); break; }; /* set the bounds of the newly allocated widget */ bounds->w = item_width; bounds->h = layout->row.height - spacing.y; bounds->y = layout->at_y - (float)*layout->offset_y; bounds->x = layout->at_x + item_offset + item_spacing + padding.x; if (((bounds->x + bounds->w) > layout->max_x) && modify) layout->max_x = bounds->x + bounds->w; bounds->x -= (float)*layout->offset_x; } NK_LIB void nk_panel_alloc_space(struct nk_rect *bounds, const struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* check if the end of the row has been hit and begin new row if so */ win = ctx->current; layout = win->layout; if (layout->row.index >= layout->row.columns) nk_panel_alloc_row(ctx, win); /* calculate widget position and size */ nk_layout_widget_space(bounds, ctx, win, nk_true); layout->row.index++; } NK_LIB void nk_layout_peek(struct nk_rect *bounds, struct nk_context *ctx) { float y; int index; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; y = layout->at_y; index = layout->row.index; if (layout->row.index >= layout->row.columns) { layout->at_y += layout->row.height; layout->row.index = 0; } nk_layout_widget_space(bounds, ctx, win, nk_false); if (!layout->row.index) { bounds->x -= layout->row.item_offset; } layout->at_y = y; layout->row.index = index; } /* =============================================================== * * TREE * * ===============================================================*/ NK_INTERN int nk_tree_state_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states *state) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; const struct nk_input *in; const struct nk_style_button *button; enum nk_symbol_type symbol; float row_height; struct nk_vec2 item_spacing; struct nk_rect header = {0,0,0,0}; struct nk_rect sym = {0,0,0,0}; struct nk_text text; nk_flags ws = 0; enum nk_widget_layout_states widget_state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* cache some data */ win = ctx->current; layout = win->layout; out = &win->buffer; style = &ctx->style; item_spacing = style->window.spacing; /* calculate header bounds and draw background */ row_height = style->font->height + 2 * style->tab.padding.y; nk_layout_set_min_row_height(ctx, row_height); nk_layout_row_dynamic(ctx, row_height, 1); nk_layout_reset_min_row_height(ctx); widget_state = nk_widget(&header, ctx); if (type == NK_TREE_TAB) { const struct nk_style_item *background = &style->tab.background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, header, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, style->tab.border_color); nk_fill_rect(out, nk_shrink_rect(header, style->tab.border), style->tab.rounding, background->data.color); } } else text.background = style->window.background; /* update node state */ in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0; in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0; if (nk_button_behavior(&ws, header, in, NK_BUTTON_DEFAULT)) *state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED; /* select correct button style */ if (*state == NK_MAXIMIZED) { symbol = style->tab.sym_maximize; if (type == NK_TREE_TAB) button = &style->tab.tab_maximize_button; else button = &style->tab.node_maximize_button; } else { symbol = style->tab.sym_minimize; if (type == NK_TREE_TAB) button = &style->tab.tab_minimize_button; else button = &style->tab.node_minimize_button; } {/* draw triangle button */ sym.w = sym.h = style->font->height; sym.y = header.y + style->tab.padding.y; sym.x = header.x + style->tab.padding.x; nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT, button, 0, style->font); if (img) { /* draw optional image icon */ sym.x = sym.x + sym.w + 4 * item_spacing.x; nk_draw_image(&win->buffer, sym, img, nk_white); sym.w = style->font->height + style->tab.spacing.x;} } {/* draw label */ struct nk_rect label; header.w = NK_MAX(header.w, sym.w + item_spacing.x); label.x = sym.x + sym.w + item_spacing.x; label.y = sym.y; label.w = header.w - (sym.w + item_spacing.y + style->tab.indent); label.h = style->font->height; text.text = style->tab.text; text.padding = nk_vec2(0,0); nk_widget_text(out, label, title, nk_strlen(title), &text, NK_TEXT_LEFT, style->font);} /* increase x-axis cursor widget position pointer */ if (*state == NK_MAXIMIZED) { layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent; layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent); layout->bounds.w -= (style->tab.indent + style->window.padding.x); layout->row.tree_depth++; return nk_true; } else return nk_false; } NK_INTERN int nk_tree_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states initial_state, const char *hash, int len, int line) { struct nk_window *win = ctx->current; int title_len = 0; nk_hash tree_hash = 0; nk_uint *state = 0; /* retrieve tree state from internal widget state tables */ if (!hash) { title_len = (int)nk_strlen(title); tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line); } else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line); state = nk_find_value(win, tree_hash); if (!state) { state = nk_add_value(ctx, win, tree_hash, 0); *state = initial_state; } return nk_tree_state_base(ctx, type, img, title, (enum nk_collapse_states*)state); } NK_API int nk_tree_state_push(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states *state) { return nk_tree_state_base(ctx, type, 0, title, state); } NK_API int nk_tree_state_image_push(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states *state) { return nk_tree_state_base(ctx, type, &img, title, state); } NK_API void nk_tree_state_pop(struct nk_context *ctx) { struct nk_window *win = 0; struct nk_panel *layout = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->at_x -= ctx->style.tab.indent + ctx->style.window.padding.x; layout->bounds.w += ctx->style.tab.indent + ctx->style.window.padding.x; NK_ASSERT(layout->row.tree_depth); layout->row.tree_depth--; } NK_API int nk_tree_push_hashed(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len, int line) { return nk_tree_base(ctx, type, 0, title, initial_state, hash, len, line); } NK_API int nk_tree_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed) { return nk_tree_base(ctx, type, &img, title, initial_state, hash, len, seed); } NK_API void nk_tree_pop(struct nk_context *ctx) { nk_tree_state_pop(ctx); } NK_INTERN int nk_tree_element_image_push_hashed_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, int title_len, enum nk_collapse_states *state, int *selected) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; const struct nk_input *in; const struct nk_style_button *button; enum nk_symbol_type symbol; float row_height; struct nk_vec2 padding; int text_len; float text_width; struct nk_vec2 item_spacing; struct nk_rect header = {0,0,0,0}; struct nk_rect sym = {0,0,0,0}; struct nk_text text; nk_flags ws = 0; enum nk_widget_layout_states widget_state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* cache some data */ win = ctx->current; layout = win->layout; out = &win->buffer; style = &ctx->style; item_spacing = style->window.spacing; padding = style->selectable.padding; /* calculate header bounds and draw background */ row_height = style->font->height + 2 * style->tab.padding.y; nk_layout_set_min_row_height(ctx, row_height); nk_layout_row_dynamic(ctx, row_height, 1); nk_layout_reset_min_row_height(ctx); widget_state = nk_widget(&header, ctx); if (type == NK_TREE_TAB) { const struct nk_style_item *background = &style->tab.background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, header, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, style->tab.border_color); nk_fill_rect(out, nk_shrink_rect(header, style->tab.border), style->tab.rounding, background->data.color); } } else text.background = style->window.background; in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0; in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0; /* select correct button style */ if (*state == NK_MAXIMIZED) { symbol = style->tab.sym_maximize; if (type == NK_TREE_TAB) button = &style->tab.tab_maximize_button; else button = &style->tab.node_maximize_button; } else { symbol = style->tab.sym_minimize; if (type == NK_TREE_TAB) button = &style->tab.tab_minimize_button; else button = &style->tab.node_minimize_button; } {/* draw triangle button */ sym.w = sym.h = style->font->height; sym.y = header.y + style->tab.padding.y; sym.x = header.x + style->tab.padding.x; if (nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT, button, in, style->font)) *state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED;} /* draw label */ {nk_flags dummy = 0; struct nk_rect label; /* calculate size of the text and tooltip */ text_len = nk_strlen(title); text_width = style->font->width(style->font->userdata, style->font->height, title, text_len); text_width += (4 * padding.x); header.w = NK_MAX(header.w, sym.w + item_spacing.x); label.x = sym.x + sym.w + item_spacing.x; label.y = sym.y; label.w = NK_MIN(header.w - (sym.w + item_spacing.y + style->tab.indent), text_width); label.h = style->font->height; if (img) { nk_do_selectable_image(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT, selected, img, &style->selectable, in, style->font); } else nk_do_selectable(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT, selected, &style->selectable, in, style->font); } /* increase x-axis cursor widget position pointer */ if (*state == NK_MAXIMIZED) { layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent; layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent); layout->bounds.w -= (style->tab.indent + style->window.padding.x); layout->row.tree_depth++; return nk_true; } else return nk_false; } NK_INTERN int nk_tree_element_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int line) { struct nk_window *win = ctx->current; int title_len = 0; nk_hash tree_hash = 0; nk_uint *state = 0; /* retrieve tree state from internal widget state tables */ if (!hash) { title_len = (int)nk_strlen(title); tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line); } else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line); state = nk_find_value(win, tree_hash); if (!state) { state = nk_add_value(ctx, win, tree_hash, 0); *state = initial_state; } return nk_tree_element_image_push_hashed_base(ctx, type, img, title, nk_strlen(title), (enum nk_collapse_states*)state, selected); } NK_API int nk_tree_element_push_hashed(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int seed) { return nk_tree_element_base(ctx, type, 0, title, initial_state, selected, hash, len, seed); } NK_API int nk_tree_element_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len,int seed) { return nk_tree_element_base(ctx, type, &img, title, initial_state, selected, hash, len, seed); } NK_API void nk_tree_element_pop(struct nk_context *ctx) { nk_tree_state_pop(ctx); } /* =============================================================== * * GROUP * * ===============================================================*/ NK_API int nk_group_scrolled_offset_begin(struct nk_context *ctx, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags) { struct nk_rect bounds; struct nk_window panel; struct nk_window *win; win = ctx->current; nk_panel_alloc_space(&bounds, ctx); {const struct nk_rect *c = &win->layout->clip; if (!NK_INTERSECT(c->x, c->y, c->w, c->h, bounds.x, bounds.y, bounds.w, bounds.h) && !(flags & NK_WINDOW_MOVABLE)) { return 0; }} if (win->flags & NK_WINDOW_ROM) flags |= NK_WINDOW_ROM; /* initialize a fake window to create the panel from */ nk_zero(&panel, sizeof(panel)); panel.bounds = bounds; panel.flags = flags; panel.scrollbar.x = *x_offset; panel.scrollbar.y = *y_offset; panel.buffer = win->buffer; panel.layout = (struct nk_panel*)nk_create_panel(ctx); ctx->current = &panel; nk_panel_begin(ctx, (flags & NK_WINDOW_TITLE) ? title: 0, NK_PANEL_GROUP); win->buffer = panel.buffer; win->buffer.clip = panel.layout->clip; panel.layout->offset_x = x_offset; panel.layout->offset_y = y_offset; panel.layout->parent = win->layout; win->layout = panel.layout; ctx->current = win; if ((panel.layout->flags & NK_WINDOW_CLOSED) || (panel.layout->flags & NK_WINDOW_MINIMIZED)) { nk_flags f = panel.layout->flags; nk_group_scrolled_end(ctx); if (f & NK_WINDOW_CLOSED) return NK_WINDOW_CLOSED; if (f & NK_WINDOW_MINIMIZED) return NK_WINDOW_MINIMIZED; } return 1; } NK_API void nk_group_scrolled_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *parent; struct nk_panel *g; struct nk_rect clip; struct nk_window pan; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; /* make sure nk_group_begin was called correctly */ NK_ASSERT(ctx->current); win = ctx->current; NK_ASSERT(win->layout); g = win->layout; NK_ASSERT(g->parent); parent = g->parent; /* dummy window */ nk_zero_struct(pan); panel_padding = nk_panel_get_padding(&ctx->style, NK_PANEL_GROUP); pan.bounds.y = g->bounds.y - (g->header_height + g->menu.h); pan.bounds.x = g->bounds.x - panel_padding.x; pan.bounds.w = g->bounds.w + 2 * panel_padding.x; pan.bounds.h = g->bounds.h + g->header_height + g->menu.h; if (g->flags & NK_WINDOW_BORDER) { pan.bounds.x -= g->border; pan.bounds.y -= g->border; pan.bounds.w += 2*g->border; pan.bounds.h += 2*g->border; } if (!(g->flags & NK_WINDOW_NO_SCROLLBAR)) { pan.bounds.w += ctx->style.window.scrollbar_size.x; pan.bounds.h += ctx->style.window.scrollbar_size.y; } pan.scrollbar.x = *g->offset_x; pan.scrollbar.y = *g->offset_y; pan.flags = g->flags; pan.buffer = win->buffer; pan.layout = g; pan.parent = win; ctx->current = &pan; /* make sure group has correct clipping rectangle */ nk_unify(&clip, &parent->clip, pan.bounds.x, pan.bounds.y, pan.bounds.x + pan.bounds.w, pan.bounds.y + pan.bounds.h + panel_padding.x); nk_push_scissor(&pan.buffer, clip); nk_end(ctx); win->buffer = pan.buffer; nk_push_scissor(&win->buffer, parent->clip); ctx->current = win; win->layout = parent; g->bounds = pan.bounds; return; } NK_API int nk_group_scrolled_begin(struct nk_context *ctx, struct nk_scroll *scroll, const char *title, nk_flags flags) { return nk_group_scrolled_offset_begin(ctx, &scroll->x, &scroll->y, title, flags); } NK_API int nk_group_begin_titled(struct nk_context *ctx, const char *id, const char *title, nk_flags flags) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset; nk_uint *y_offset; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return 0; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset = nk_find_value(win, id_hash); if (!x_offset) { x_offset = nk_add_value(ctx, win, id_hash, 0); y_offset = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset); NK_ASSERT(y_offset); if (!x_offset || !y_offset) return 0; *x_offset = *y_offset = 0; } else y_offset = nk_find_value(win, id_hash+1); return nk_group_scrolled_offset_begin(ctx, x_offset, y_offset, title, flags); } NK_API int nk_group_begin(struct nk_context *ctx, const char *title, nk_flags flags) { return nk_group_begin_titled(ctx, title, title, flags); } NK_API void nk_group_end(struct nk_context *ctx) { nk_group_scrolled_end(ctx); } NK_API void nk_group_get_scroll(struct nk_context *ctx, const char *id, nk_uint *x_offset, nk_uint *y_offset) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset_ptr; nk_uint *y_offset_ptr; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset_ptr = nk_find_value(win, id_hash); if (!x_offset_ptr) { x_offset_ptr = nk_add_value(ctx, win, id_hash, 0); y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset_ptr); NK_ASSERT(y_offset_ptr); if (!x_offset_ptr || !y_offset_ptr) return; *x_offset_ptr = *y_offset_ptr = 0; } else y_offset_ptr = nk_find_value(win, id_hash+1); if (x_offset) *x_offset = *x_offset_ptr; if (y_offset) *y_offset = *y_offset_ptr; } NK_API void nk_group_set_scroll(struct nk_context *ctx, const char *id, nk_uint x_offset, nk_uint y_offset) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset_ptr; nk_uint *y_offset_ptr; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset_ptr = nk_find_value(win, id_hash); if (!x_offset_ptr) { x_offset_ptr = nk_add_value(ctx, win, id_hash, 0); y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset_ptr); NK_ASSERT(y_offset_ptr); if (!x_offset_ptr || !y_offset_ptr) return; *x_offset_ptr = *y_offset_ptr = 0; } else y_offset_ptr = nk_find_value(win, id_hash+1); *x_offset_ptr = x_offset; *y_offset_ptr = y_offset; } /* =============================================================== * * LIST VIEW * * ===============================================================*/ NK_API int nk_list_view_begin(struct nk_context *ctx, struct nk_list_view *view, const char *title, nk_flags flags, int row_height, int row_count) { int title_len; nk_hash title_hash; nk_uint *x_offset; nk_uint *y_offset; int result; struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_vec2 item_spacing; NK_ASSERT(ctx); NK_ASSERT(view); NK_ASSERT(title); if (!ctx || !view || !title) return 0; win = ctx->current; style = &ctx->style; item_spacing = style->window.spacing; row_height += NK_MAX(0, (int)item_spacing.y); /* find persistent list view scrollbar offset */ title_len = (int)nk_strlen(title); title_hash = nk_murmur_hash(title, (int)title_len, NK_PANEL_GROUP); x_offset = nk_find_value(win, title_hash); if (!x_offset) { x_offset = nk_add_value(ctx, win, title_hash, 0); y_offset = nk_add_value(ctx, win, title_hash+1, 0); NK_ASSERT(x_offset); NK_ASSERT(y_offset); if (!x_offset || !y_offset) return 0; *x_offset = *y_offset = 0; } else y_offset = nk_find_value(win, title_hash+1); view->scroll_value = *y_offset; view->scroll_pointer = y_offset; *y_offset = 0; result = nk_group_scrolled_offset_begin(ctx, x_offset, y_offset, title, flags); win = ctx->current; layout = win->layout; view->total_height = row_height * NK_MAX(row_count,1); view->begin = (int)NK_MAX(((float)view->scroll_value / (float)row_height), 0.0f); view->count = (int)NK_MAX(nk_iceilf((layout->clip.h)/(float)row_height),0); view->count = NK_MIN(view->count, row_count - view->begin); view->end = view->begin + view->count; view->ctx = ctx; return result; } NK_API void nk_list_view_end(struct nk_list_view *view) { struct nk_context *ctx; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(view); NK_ASSERT(view->ctx); NK_ASSERT(view->scroll_pointer); if (!view || !view->ctx) return; ctx = view->ctx; win = ctx->current; layout = win->layout; layout->at_y = layout->bounds.y + (float)view->total_height; *view->scroll_pointer = *view->scroll_pointer + view->scroll_value; nk_group_end(view->ctx); } /* =============================================================== * * WIDGET * * ===============================================================*/ NK_API struct nk_rect nk_widget_bounds(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); nk_layout_peek(&bounds, ctx); return bounds; } NK_API struct nk_vec2 nk_widget_position(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); nk_layout_peek(&bounds, ctx); return nk_vec2(bounds.x, bounds.y); } NK_API struct nk_vec2 nk_widget_size(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); nk_layout_peek(&bounds, ctx); return nk_vec2(bounds.w, bounds.h); } NK_API float nk_widget_width(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; nk_layout_peek(&bounds, ctx); return bounds.w; } NK_API float nk_widget_height(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; nk_layout_peek(&bounds, ctx); return bounds.h; } NK_API int nk_widget_is_hovered(struct nk_context *ctx) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_is_mouse_hovering_rect(&ctx->input, bounds); } NK_API int nk_widget_is_mouse_clicked(struct nk_context *ctx, enum nk_buttons btn) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_mouse_clicked(&ctx->input, btn, bounds); } NK_API int nk_widget_has_mouse_click_down(struct nk_context *ctx, enum nk_buttons btn, int down) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_has_mouse_click_down_in_rect(&ctx->input, btn, bounds, down); } NK_API enum nk_widget_layout_states nk_widget(struct nk_rect *bounds, const struct nk_context *ctx) { struct nk_rect c, v; struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return NK_WIDGET_INVALID; /* allocate space and check if the widget needs to be updated and drawn */ nk_panel_alloc_space(bounds, ctx); win = ctx->current; layout = win->layout; in = &ctx->input; c = layout->clip; /* if one of these triggers you forgot to add an `if` condition around either a window, group, popup, combobox or contextual menu `begin` and `end` block. Example: if (nk_begin(...) {...} nk_end(...); or if (nk_group_begin(...) { nk_group_end(...);} */ NK_ASSERT(!(layout->flags & NK_WINDOW_MINIMIZED)); NK_ASSERT(!(layout->flags & NK_WINDOW_HIDDEN)); NK_ASSERT(!(layout->flags & NK_WINDOW_CLOSED)); /* need to convert to int here to remove floating point errors */ bounds->x = (float)((int)bounds->x); bounds->y = (float)((int)bounds->y); bounds->w = (float)((int)bounds->w); bounds->h = (float)((int)bounds->h); c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_unify(&v, &c, bounds->x, bounds->y, bounds->x + bounds->w, bounds->y + bounds->h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds->x, bounds->y, bounds->w, bounds->h)) return NK_WIDGET_INVALID; if (!NK_INBOX(in->mouse.pos.x, in->mouse.pos.y, v.x, v.y, v.w, v.h)) return NK_WIDGET_ROM; return NK_WIDGET_VALID; } NK_API enum nk_widget_layout_states nk_widget_fitting(struct nk_rect *bounds, struct nk_context *ctx, struct nk_vec2 item_padding) { /* update the bounds to stand without padding */ struct nk_window *win; struct nk_style *style; struct nk_panel *layout; enum nk_widget_layout_states state; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return NK_WIDGET_INVALID; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(bounds, ctx); panel_padding = nk_panel_get_padding(style, layout->type); if (layout->row.index == 1) { bounds->w += panel_padding.x; bounds->x -= panel_padding.x; } else bounds->x -= item_padding.x; if (layout->row.index == layout->row.columns) bounds->w += panel_padding.x; else bounds->w += item_padding.x; return state; } NK_API void nk_spacing(struct nk_context *ctx, int cols) { struct nk_window *win; struct nk_panel *layout; struct nk_rect none; int i, index, rows; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* spacing over row boundaries */ win = ctx->current; layout = win->layout; index = (layout->row.index + cols) % layout->row.columns; rows = (layout->row.index + cols) / layout->row.columns; if (rows) { for (i = 0; i < rows; ++i) nk_panel_alloc_row(ctx, win); cols = index; } /* non table layout need to allocate space */ if (layout->row.type != NK_LAYOUT_DYNAMIC_FIXED && layout->row.type != NK_LAYOUT_STATIC_FIXED) { for (i = 0; i < cols; ++i) nk_panel_alloc_space(&none, ctx); } layout->row.index = index; } /* =============================================================== * * TEXT * * ===============================================================*/ NK_LIB void nk_widget_text(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, nk_flags a, const struct nk_user_font *f) { struct nk_rect label; float text_width; NK_ASSERT(o); NK_ASSERT(t); if (!o || !t) return; b.h = NK_MAX(b.h, 2 * t->padding.y); label.x = 0; label.w = 0; label.y = b.y + t->padding.y; label.h = NK_MIN(f->height, b.h - 2 * t->padding.y); text_width = f->width(f->userdata, f->height, (const char*)string, len); text_width += (2.0f * t->padding.x); /* align in x-axis */ if (a & NK_TEXT_ALIGN_LEFT) { label.x = b.x + t->padding.x; label.w = NK_MAX(0, b.w - 2 * t->padding.x); } else if (a & NK_TEXT_ALIGN_CENTERED) { label.w = NK_MAX(1, 2 * t->padding.x + (float)text_width); label.x = (b.x + t->padding.x + ((b.w - 2 * t->padding.x) - label.w) / 2); label.x = NK_MAX(b.x + t->padding.x, label.x); label.w = NK_MIN(b.x + b.w, label.x + label.w); if (label.w >= label.x) label.w -= label.x; } else if (a & NK_TEXT_ALIGN_RIGHT) { label.x = NK_MAX(b.x + t->padding.x, (b.x + b.w) - (2 * t->padding.x + (float)text_width)); label.w = (float)text_width + 2 * t->padding.x; } else return; /* align in y-axis */ if (a & NK_TEXT_ALIGN_MIDDLE) { label.y = b.y + b.h/2.0f - (float)f->height/2.0f; label.h = NK_MAX(b.h/2.0f, b.h - (b.h/2.0f + f->height/2.0f)); } else if (a & NK_TEXT_ALIGN_BOTTOM) { label.y = b.y + b.h - f->height; label.h = f->height; } nk_draw_text(o, label, (const char*)string, len, f, t->background, t->text); } NK_LIB void nk_widget_text_wrap(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, const struct nk_user_font *f) { float width; int glyphs = 0; int fitting = 0; int done = 0; struct nk_rect line; struct nk_text text; NK_INTERN nk_rune seperator[] = {' '}; NK_ASSERT(o); NK_ASSERT(t); if (!o || !t) return; text.padding = nk_vec2(0,0); text.background = t->background; text.text = t->text; b.w = NK_MAX(b.w, 2 * t->padding.x); b.h = NK_MAX(b.h, 2 * t->padding.y); b.h = b.h - 2 * t->padding.y; line.x = b.x + t->padding.x; line.y = b.y + t->padding.y; line.w = b.w - 2 * t->padding.x; line.h = 2 * t->padding.y + f->height; fitting = nk_text_clamp(f, string, len, line.w, &glyphs, &width, seperator,NK_LEN(seperator)); while (done < len) { if (!fitting || line.y + line.h >= (b.y + b.h)) break; nk_widget_text(o, line, &string[done], fitting, &text, NK_TEXT_LEFT, f); done += fitting; line.y += f->height + 2 * t->padding.y; fitting = nk_text_clamp(f, &string[done], len - done, line.w, &glyphs, &width, seperator,NK_LEN(seperator)); } } NK_API void nk_text_colored(struct nk_context *ctx, const char *str, int len, nk_flags alignment, struct nk_color color) { struct nk_window *win; const struct nk_style *style; struct nk_vec2 item_padding; struct nk_rect bounds; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; style = &ctx->style; nk_panel_alloc_space(&bounds, ctx); item_padding = style->text.padding; text.padding.x = item_padding.x; text.padding.y = item_padding.y; text.background = style->window.background; text.text = color; nk_widget_text(&win->buffer, bounds, str, len, &text, alignment, style->font); } NK_API void nk_text_wrap_colored(struct nk_context *ctx, const char *str, int len, struct nk_color color) { struct nk_window *win; const struct nk_style *style; struct nk_vec2 item_padding; struct nk_rect bounds; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; style = &ctx->style; nk_panel_alloc_space(&bounds, ctx); item_padding = style->text.padding; text.padding.x = item_padding.x; text.padding.y = item_padding.y; text.background = style->window.background; text.text = color; nk_widget_text_wrap(&win->buffer, bounds, str, len, &text, style->font); } #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_labelf_colored(struct nk_context *ctx, nk_flags flags, struct nk_color color, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv_colored(ctx, flags, color, fmt, args); va_end(args); } NK_API void nk_labelf_colored_wrap(struct nk_context *ctx, struct nk_color color, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv_colored_wrap(ctx, color, fmt, args); va_end(args); } NK_API void nk_labelf(struct nk_context *ctx, nk_flags flags, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv(ctx, flags, fmt, args); va_end(args); } NK_API void nk_labelf_wrap(struct nk_context *ctx, const char *fmt,...) { va_list args; va_start(args, fmt); nk_labelfv_wrap(ctx, fmt, args); va_end(args); } NK_API void nk_labelfv_colored(struct nk_context *ctx, nk_flags flags, struct nk_color color, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_colored(ctx, buf, flags, color); } NK_API void nk_labelfv_colored_wrap(struct nk_context *ctx, struct nk_color color, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_colored_wrap(ctx, buf, color); } NK_API void nk_labelfv(struct nk_context *ctx, nk_flags flags, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label(ctx, buf, flags); } NK_API void nk_labelfv_wrap(struct nk_context *ctx, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_wrap(ctx, buf); } NK_API void nk_value_bool(struct nk_context *ctx, const char *prefix, int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %s", prefix, ((value) ? "true": "false")); } NK_API void nk_value_int(struct nk_context *ctx, const char *prefix, int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %d", prefix, value); } NK_API void nk_value_uint(struct nk_context *ctx, const char *prefix, unsigned int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %u", prefix, value); } NK_API void nk_value_float(struct nk_context *ctx, const char *prefix, float value) { double double_value = (double)value; nk_labelf(ctx, NK_TEXT_LEFT, "%s: %.3f", prefix, double_value); } NK_API void nk_value_color_byte(struct nk_context *ctx, const char *p, struct nk_color c) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: (%d, %d, %d, %d)", p, c.r, c.g, c.b, c.a); } NK_API void nk_value_color_float(struct nk_context *ctx, const char *p, struct nk_color color) { double c[4]; nk_color_dv(c, color); nk_labelf(ctx, NK_TEXT_LEFT, "%s: (%.2f, %.2f, %.2f, %.2f)", p, c[0], c[1], c[2], c[3]); } NK_API void nk_value_color_hex(struct nk_context *ctx, const char *prefix, struct nk_color color) { char hex[16]; nk_color_hex_rgba(hex, color); nk_labelf(ctx, NK_TEXT_LEFT, "%s: %s", prefix, hex); } #endif NK_API void nk_text(struct nk_context *ctx, const char *str, int len, nk_flags alignment) { NK_ASSERT(ctx); if (!ctx) return; nk_text_colored(ctx, str, len, alignment, ctx->style.text.color); } NK_API void nk_text_wrap(struct nk_context *ctx, const char *str, int len) { NK_ASSERT(ctx); if (!ctx) return; nk_text_wrap_colored(ctx, str, len, ctx->style.text.color); } NK_API void nk_label(struct nk_context *ctx, const char *str, nk_flags alignment) { nk_text(ctx, str, nk_strlen(str), alignment); } NK_API void nk_label_colored(struct nk_context *ctx, const char *str, nk_flags align, struct nk_color color) { nk_text_colored(ctx, str, nk_strlen(str), align, color); } NK_API void nk_label_wrap(struct nk_context *ctx, const char *str) { nk_text_wrap(ctx, str, nk_strlen(str)); } NK_API void nk_label_colored_wrap(struct nk_context *ctx, const char *str, struct nk_color color) { nk_text_wrap_colored(ctx, str, nk_strlen(str), color); } /* =============================================================== * * IMAGE * * ===============================================================*/ NK_API nk_handle nk_handle_ptr(void *ptr) { nk_handle handle = {0}; handle.ptr = ptr; return handle; } NK_API nk_handle nk_handle_id(int id) { nk_handle handle; nk_zero_struct(handle); handle.id = id; return handle; } NK_API struct nk_image nk_subimage_ptr(void *ptr, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.ptr = ptr; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_subimage_id(int id, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.id = id; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_subimage_handle(nk_handle handle, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle = handle; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_image_handle(nk_handle handle) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle = handle; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API struct nk_image nk_image_ptr(void *ptr) { struct nk_image s; nk_zero(&s, sizeof(s)); NK_ASSERT(ptr); s.handle.ptr = ptr; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API struct nk_image nk_image_id(int id) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.id = id; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API int nk_image_is_subimage(const struct nk_image* img) { NK_ASSERT(img); return !(img->w == 0 && img->h == 0); } NK_API void nk_image(struct nk_context *ctx, struct nk_image img) { struct nk_window *win; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; if (!nk_widget(&bounds, ctx)) return; nk_draw_image(&win->buffer, bounds, &img, nk_white); } NK_API void nk_image_color(struct nk_context *ctx, struct nk_image img, struct nk_color col) { struct nk_window *win; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; if (!nk_widget(&bounds, ctx)) return; nk_draw_image(&win->buffer, bounds, &img, col); } /* ============================================================== * * BUTTON * * ===============================================================*/ NK_LIB void nk_draw_symbol(struct nk_command_buffer *out, enum nk_symbol_type type, struct nk_rect content, struct nk_color background, struct nk_color foreground, float border_width, const struct nk_user_font *font) { switch (type) { case NK_SYMBOL_X: case NK_SYMBOL_UNDERSCORE: case NK_SYMBOL_PLUS: case NK_SYMBOL_MINUS: { /* single character text symbol */ const char *X = (type == NK_SYMBOL_X) ? "x": (type == NK_SYMBOL_UNDERSCORE) ? "_": (type == NK_SYMBOL_PLUS) ? "+": "-"; struct nk_text text; text.padding = nk_vec2(0,0); text.background = background; text.text = foreground; nk_widget_text(out, content, X, 1, &text, NK_TEXT_CENTERED, font); } break; case NK_SYMBOL_CIRCLE_SOLID: case NK_SYMBOL_CIRCLE_OUTLINE: case NK_SYMBOL_RECT_SOLID: case NK_SYMBOL_RECT_OUTLINE: { /* simple empty/filled shapes */ if (type == NK_SYMBOL_RECT_SOLID || type == NK_SYMBOL_RECT_OUTLINE) { nk_fill_rect(out, content, 0, foreground); if (type == NK_SYMBOL_RECT_OUTLINE) nk_fill_rect(out, nk_shrink_rect(content, border_width), 0, background); } else { nk_fill_circle(out, content, foreground); if (type == NK_SYMBOL_CIRCLE_OUTLINE) nk_fill_circle(out, nk_shrink_rect(content, 1), background); } } break; case NK_SYMBOL_TRIANGLE_UP: case NK_SYMBOL_TRIANGLE_DOWN: case NK_SYMBOL_TRIANGLE_LEFT: case NK_SYMBOL_TRIANGLE_RIGHT: { enum nk_heading heading; struct nk_vec2 points[3]; heading = (type == NK_SYMBOL_TRIANGLE_RIGHT) ? NK_RIGHT : (type == NK_SYMBOL_TRIANGLE_LEFT) ? NK_LEFT: (type == NK_SYMBOL_TRIANGLE_UP) ? NK_UP: NK_DOWN; nk_triangle_from_direction(points, content, 0, 0, heading); nk_fill_triangle(out, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y, foreground); } break; default: case NK_SYMBOL_NONE: case NK_SYMBOL_MAX: break; } } NK_LIB int nk_button_behavior(nk_flags *state, struct nk_rect r, const struct nk_input *i, enum nk_button_behavior behavior) { int ret = 0; nk_widget_state_reset(state); if (!i) return 0; if (nk_input_is_mouse_hovering_rect(i, r)) { *state = NK_WIDGET_STATE_HOVERED; if (nk_input_is_mouse_down(i, NK_BUTTON_LEFT)) *state = NK_WIDGET_STATE_ACTIVE; if (nk_input_has_mouse_click_in_rect(i, NK_BUTTON_LEFT, r)) { ret = (behavior != NK_BUTTON_DEFAULT) ? nk_input_is_mouse_down(i, NK_BUTTON_LEFT): #ifdef NK_BUTTON_TRIGGER_ON_RELEASE nk_input_is_mouse_released(i, NK_BUTTON_LEFT); #else nk_input_is_mouse_pressed(i, NK_BUTTON_LEFT); #endif } } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(i, r)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(i, r)) *state |= NK_WIDGET_STATE_LEFT; return ret; } NK_LIB const struct nk_style_item* nk_draw_button(struct nk_command_buffer *out, const struct nk_rect *bounds, nk_flags state, const struct nk_style_button *style) { const struct nk_style_item *background; if (state & NK_WIDGET_STATE_HOVER) background = &style->hover; else if (state & NK_WIDGET_STATE_ACTIVED) background = &style->active; else background = &style->normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } return background; } NK_LIB int nk_do_button(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, const struct nk_style_button *style, const struct nk_input *in, enum nk_button_behavior behavior, struct nk_rect *content) { struct nk_rect bounds; NK_ASSERT(style); NK_ASSERT(state); NK_ASSERT(out); if (!out || !style) return nk_false; /* calculate button content space */ content->x = r.x + style->padding.x + style->border + style->rounding; content->y = r.y + style->padding.y + style->border + style->rounding; content->w = r.w - (2 * style->padding.x + style->border + style->rounding*2); content->h = r.h - (2 * style->padding.y + style->border + style->rounding*2); /* execute button behavior */ bounds.x = r.x - style->touch_padding.x; bounds.y = r.y - style->touch_padding.y; bounds.w = r.w + 2 * style->touch_padding.x; bounds.h = r.h + 2 * style->touch_padding.y; return nk_button_behavior(state, bounds, in, behavior); } NK_LIB void nk_draw_button_text(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const char *txt, int len, nk_flags text_alignment, const struct nk_user_font *font) { struct nk_text text; const struct nk_style_item *background; background = nk_draw_button(out, bounds, state, style); /* select correct colors/images */ if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; if (state & NK_WIDGET_STATE_HOVER) text.text = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) text.text = style->text_active; else text.text = style->text_normal; text.padding = nk_vec2(0,0); nk_widget_text(out, *content, txt, len, &text, text_alignment, font); } NK_LIB int nk_do_button_text(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *string, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font) { struct nk_rect content; int ret = nk_false; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(string); NK_ASSERT(font); if (!out || !style || !font || !string) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text(out, &bounds, &content, *state, style, string, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, enum nk_symbol_type type, const struct nk_user_font *font) { struct nk_color sym, bg; const struct nk_style_item *background; /* select correct colors/images */ background = nk_draw_button(out, bounds, state, style); if (background->type == NK_STYLE_ITEM_COLOR) bg = background->data.color; else bg = style->text_background; if (state & NK_WIDGET_STATE_HOVER) sym = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) sym = style->text_active; else sym = style->text_normal; nk_draw_symbol(out, type, *content, bg, sym, 1, font); } NK_LIB int nk_do_button_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font) { int ret; struct nk_rect content; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(font); NK_ASSERT(out); if (!out || !style || !font || !state) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_symbol(out, &bounds, &content, *state, style, symbol, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const struct nk_image *img) { nk_draw_button(out, bounds, state, style); nk_draw_image(out, *content, img, nk_white); } NK_LIB int nk_do_button_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, enum nk_button_behavior b, const struct nk_style_button *style, const struct nk_input *in) { int ret; struct nk_rect content; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(out); if (!out || !style || !state) return nk_false; ret = nk_do_button(state, out, bounds, style, in, b, &content); content.x += style->image_padding.x; content.y += style->image_padding.y; content.w -= 2 * style->image_padding.x; content.h -= 2 * style->image_padding.y; if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_image(out, &bounds, &content, *state, style, &img); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_text_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *symbol, nk_flags state, const struct nk_style_button *style, const char *str, int len, enum nk_symbol_type type, const struct nk_user_font *font) { struct nk_color sym; struct nk_text text; const struct nk_style_item *background; /* select correct background colors/images */ background = nk_draw_button(out, bounds, state, style); if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; /* select correct text colors */ if (state & NK_WIDGET_STATE_HOVER) { sym = style->text_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { sym = style->text_active; text.text = style->text_active; } else { sym = style->text_normal; text.text = style->text_normal; } text.padding = nk_vec2(0,0); nk_draw_symbol(out, type, *symbol, style->text_background, sym, 0, font); nk_widget_text(out, *label, str, len, &text, NK_TEXT_CENTERED, font); } NK_LIB int nk_do_button_text_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, const char *str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in) { int ret; struct nk_rect tri = {0,0,0,0}; struct nk_rect content; NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(font); if (!out || !style || !font) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); tri.y = content.y + (content.h/2) - font->height/2; tri.w = font->height; tri.h = font->height; if (align & NK_TEXT_ALIGN_LEFT) { tri.x = (content.x + content.w) - (2 * style->padding.x + tri.w); tri.x = NK_MAX(tri.x, 0); } else tri.x = content.x + 2 * style->padding.x; /* draw button */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text_symbol(out, &bounds, &content, &tri, *state, style, str, len, symbol, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_text_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *image, nk_flags state, const struct nk_style_button *style, const char *str, int len, const struct nk_user_font *font, const struct nk_image *img) { struct nk_text text; const struct nk_style_item *background; background = nk_draw_button(out, bounds, state, style); /* select correct colors */ if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; if (state & NK_WIDGET_STATE_HOVER) text.text = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) text.text = style->text_active; else text.text = style->text_normal; text.padding = nk_vec2(0,0); nk_widget_text(out, *label, str, len, &text, NK_TEXT_CENTERED, font); nk_draw_image(out, *image, img, nk_white); } NK_LIB int nk_do_button_text_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, const char* str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in) { int ret; struct nk_rect icon; struct nk_rect content; NK_ASSERT(style); NK_ASSERT(state); NK_ASSERT(font); NK_ASSERT(out); if (!out || !font || !style || !str) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text_image(out, &bounds, &content, &icon, *state, style, str, len, font, &img); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_API void nk_button_set_behavior(struct nk_context *ctx, enum nk_button_behavior behavior) { NK_ASSERT(ctx); if (!ctx) return; ctx->button_behavior = behavior; } NK_API int nk_button_push_behavior(struct nk_context *ctx, enum nk_button_behavior behavior) { struct nk_config_stack_button_behavior *button_stack; struct nk_config_stack_button_behavior_element *element; NK_ASSERT(ctx); if (!ctx) return 0; button_stack = &ctx->stacks.button_behaviors; NK_ASSERT(button_stack->head < (int)NK_LEN(button_stack->elements)); if (button_stack->head >= (int)NK_LEN(button_stack->elements)) return 0; element = &button_stack->elements[button_stack->head++]; element->address = &ctx->button_behavior; element->old_value = ctx->button_behavior; ctx->button_behavior = behavior; return 1; } NK_API int nk_button_pop_behavior(struct nk_context *ctx) { struct nk_config_stack_button_behavior *button_stack; struct nk_config_stack_button_behavior_element *element; NK_ASSERT(ctx); if (!ctx) return 0; button_stack = &ctx->stacks.button_behaviors; NK_ASSERT(button_stack->head > 0); if (button_stack->head < 1) return 0; element = &button_stack->elements[--button_stack->head]; *element->address = element->old_value; return 1; } NK_API int nk_button_text_styled(struct nk_context *ctx, const struct nk_style_button *style, const char *title, int len) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(style); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!style || !ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text(&ctx->last_widget_state, &win->buffer, bounds, title, len, style->text_alignment, ctx->button_behavior, style, in, ctx->style.font); } NK_API int nk_button_text(struct nk_context *ctx, const char *title, int len) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_text_styled(ctx, &ctx->style.button, title, len); } NK_API int nk_button_label_styled(struct nk_context *ctx, const struct nk_style_button *style, const char *title) { return nk_button_text_styled(ctx, style, title, nk_strlen(title)); } NK_API int nk_button_label(struct nk_context *ctx, const char *title) { return nk_button_text(ctx, title, nk_strlen(title)); } NK_API int nk_button_color(struct nk_context *ctx, struct nk_color color) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_style_button button; int ret = 0; struct nk_rect bounds; struct nk_rect content; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; button = ctx->style.button; button.normal = nk_style_item_color(color); button.hover = nk_style_item_color(color); button.active = nk_style_item_color(color); ret = nk_do_button(&ctx->last_widget_state, &win->buffer, bounds, &button, in, ctx->button_behavior, &content); nk_draw_button(&win->buffer, &bounds, ctx->last_widget_state, &button); return ret; } NK_API int nk_button_symbol_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, ctx->button_behavior, style, in, ctx->style.font); } NK_API int nk_button_symbol(struct nk_context *ctx, enum nk_symbol_type symbol) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_symbol_styled(ctx, &ctx->style.button, symbol); } NK_API int nk_button_image_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_image(&ctx->last_widget_state, &win->buffer, bounds, img, ctx->button_behavior, style, in); } NK_API int nk_button_image(struct nk_context *ctx, struct nk_image img) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_image_styled(ctx, &ctx->style.button, img); } NK_API int nk_button_symbol_text_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *text, int len, nk_flags align) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, text, len, align, ctx->button_behavior, style, ctx->style.font, in); } NK_API int nk_button_symbol_text(struct nk_context *ctx, enum nk_symbol_type symbol, const char* text, int len, nk_flags align) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_symbol_text_styled(ctx, &ctx->style.button, symbol, text, len, align); } NK_API int nk_button_symbol_label(struct nk_context *ctx, enum nk_symbol_type symbol, const char *label, nk_flags align) { return nk_button_symbol_text(ctx, symbol, label, nk_strlen(label), align); } NK_API int nk_button_symbol_label_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *title, nk_flags align) { return nk_button_symbol_text_styled(ctx, style, symbol, title, nk_strlen(title), align); } NK_API int nk_button_image_text_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img, const char *text, int len, nk_flags align) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, bounds, img, text, len, align, ctx->button_behavior, style, ctx->style.font, in); } NK_API int nk_button_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { return nk_button_image_text_styled(ctx, &ctx->style.button,img, text, len, align); } NK_API int nk_button_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_button_image_text(ctx, img, label, nk_strlen(label), align); } NK_API int nk_button_image_label_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img, const char *label, nk_flags text_alignment) { return nk_button_image_text_styled(ctx, style, img, label, nk_strlen(label), text_alignment); } /* =============================================================== * * TOGGLE * * ===============================================================*/ NK_LIB int nk_toggle_behavior(const struct nk_input *in, struct nk_rect select, nk_flags *state, int active) { nk_widget_state_reset(state); if (nk_button_behavior(state, select, in, NK_BUTTON_DEFAULT)) { *state = NK_WIDGET_STATE_ACTIVE; active = !active; } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, select)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, select)) *state |= NK_WIDGET_STATE_LEFT; return active; } NK_LIB void nk_draw_checkbox(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font) { const struct nk_style_item *background; const struct nk_style_item *cursor; struct nk_text text; /* select correct colors/images */ if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_active; } else { background = &style->normal; cursor = &style->cursor_normal; text.text = style->text_normal; } /* draw background and cursor */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *selector, 0, style->border_color); nk_fill_rect(out, nk_shrink_rect(*selector, style->border), 0, background->data.color); } else nk_draw_image(out, *selector, &background->data.image, nk_white); if (active) { if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *cursors, &cursor->data.image, nk_white); else nk_fill_rect(out, *cursors, 0, cursor->data.color); } text.padding.x = 0; text.padding.y = 0; text.background = style->text_background; nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font); } NK_LIB void nk_draw_option(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font) { const struct nk_style_item *background; const struct nk_style_item *cursor; struct nk_text text; /* select correct colors/images */ if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_active; } else { background = &style->normal; cursor = &style->cursor_normal; text.text = style->text_normal; } /* draw background and cursor */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_circle(out, *selector, style->border_color); nk_fill_circle(out, nk_shrink_rect(*selector, style->border), background->data.color); } else nk_draw_image(out, *selector, &background->data.image, nk_white); if (active) { if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *cursors, &cursor->data.image, nk_white); else nk_fill_circle(out, *cursors, cursor->data.color); } text.padding.x = 0; text.padding.y = 0; text.background = style->text_background; nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font); } NK_LIB int nk_do_toggle(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, int *active, const char *str, int len, enum nk_toggle_type type, const struct nk_style_toggle *style, const struct nk_input *in, const struct nk_user_font *font) { int was_active; struct nk_rect bounds; struct nk_rect select; struct nk_rect cursor; struct nk_rect label; NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(font); if (!out || !style || !font || !active) return 0; r.w = NK_MAX(r.w, font->height + 2 * style->padding.x); r.h = NK_MAX(r.h, font->height + 2 * style->padding.y); /* add additional touch padding for touch screen devices */ bounds.x = r.x - style->touch_padding.x; bounds.y = r.y - style->touch_padding.y; bounds.w = r.w + 2 * style->touch_padding.x; bounds.h = r.h + 2 * style->touch_padding.y; /* calculate the selector space */ select.w = font->height; select.h = select.w; select.y = r.y + r.h/2.0f - select.h/2.0f; select.x = r.x; /* calculate the bounds of the cursor inside the selector */ cursor.x = select.x + style->padding.x + style->border; cursor.y = select.y + style->padding.y + style->border; cursor.w = select.w - (2 * style->padding.x + 2 * style->border); cursor.h = select.h - (2 * style->padding.y + 2 * style->border); /* label behind the selector */ label.x = select.x + select.w + style->spacing; label.y = select.y; label.w = NK_MAX(r.x + r.w, label.x) - label.x; label.h = select.w; /* update selector */ was_active = *active; *active = nk_toggle_behavior(in, bounds, state, *active); /* draw selector */ if (style->draw_begin) style->draw_begin(out, style->userdata); if (type == NK_TOGGLE_CHECK) { nk_draw_checkbox(out, *state, style, *active, &label, &select, &cursor, str, len, font); } else { nk_draw_option(out, *state, style, *active, &label, &select, &cursor, str, len, font); } if (style->draw_end) style->draw_end(out, style->userdata); return (was_active != *active); } /*---------------------------------------------------------------- * * CHECKBOX * * --------------------------------------------------------------*/ NK_API int nk_check_text(struct nk_context *ctx, const char *text, int len, int active) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return active; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return active; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &active, text, len, NK_TOGGLE_CHECK, &style->checkbox, in, style->font); return active; } NK_API unsigned int nk_check_flags_text(struct nk_context *ctx, const char *text, int len, unsigned int flags, unsigned int value) { int old_active; NK_ASSERT(ctx); NK_ASSERT(text); if (!ctx || !text) return flags; old_active = (int)((flags & value) & value); if (nk_check_text(ctx, text, len, old_active)) flags |= value; else flags &= ~value; return flags; } NK_API int nk_checkbox_text(struct nk_context *ctx, const char *text, int len, int *active) { int old_val; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(active); if (!ctx || !text || !active) return 0; old_val = *active; *active = nk_check_text(ctx, text, len, *active); return old_val != *active; } NK_API int nk_checkbox_flags_text(struct nk_context *ctx, const char *text, int len, unsigned int *flags, unsigned int value) { int active; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(flags); if (!ctx || !text || !flags) return 0; active = (int)((*flags & value) & value); if (nk_checkbox_text(ctx, text, len, &active)) { if (active) *flags |= value; else *flags &= ~value; return 1; } return 0; } NK_API int nk_check_label(struct nk_context *ctx, const char *label, int active) { return nk_check_text(ctx, label, nk_strlen(label), active); } NK_API unsigned int nk_check_flags_label(struct nk_context *ctx, const char *label, unsigned int flags, unsigned int value) { return nk_check_flags_text(ctx, label, nk_strlen(label), flags, value); } NK_API int nk_checkbox_label(struct nk_context *ctx, const char *label, int *active) { return nk_checkbox_text(ctx, label, nk_strlen(label), active); } NK_API int nk_checkbox_flags_label(struct nk_context *ctx, const char *label, unsigned int *flags, unsigned int value) { return nk_checkbox_flags_text(ctx, label, nk_strlen(label), flags, value); } /*---------------------------------------------------------------- * * OPTION * * --------------------------------------------------------------*/ NK_API int nk_option_text(struct nk_context *ctx, const char *text, int len, int is_active) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return is_active; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return (int)state; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &is_active, text, len, NK_TOGGLE_OPTION, &style->option, in, style->font); return is_active; } NK_API int nk_radio_text(struct nk_context *ctx, const char *text, int len, int *active) { int old_value; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(active); if (!ctx || !text || !active) return 0; old_value = *active; *active = nk_option_text(ctx, text, len, old_value); return old_value != *active; } NK_API int nk_option_label(struct nk_context *ctx, const char *label, int active) { return nk_option_text(ctx, label, nk_strlen(label), active); } NK_API int nk_radio_label(struct nk_context *ctx, const char *label, int *active) { return nk_radio_text(ctx, label, nk_strlen(label), active); } /* =============================================================== * * SELECTABLE * * ===============================================================*/ NK_LIB void nk_draw_selectable(struct nk_command_buffer *out, nk_flags state, const struct nk_style_selectable *style, int active, const struct nk_rect *bounds, const struct nk_rect *icon, const struct nk_image *img, enum nk_symbol_type sym, const char *string, int len, nk_flags align, const struct nk_user_font *font) { const struct nk_style_item *background; struct nk_text text; text.padding = style->padding; /* select correct colors/images */ if (!active) { if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->pressed; text.text = style->text_pressed; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text.text = style->text_hover; } else { background = &style->normal; text.text = style->text_normal; } } else { if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->pressed_active; text.text = style->text_pressed_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover_active; text.text = style->text_hover_active; } else { background = &style->normal_active; text.text = style->text_normal_active; } } /* draw selectable background and text */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); text.background = background->data.color; } if (icon) { if (img) nk_draw_image(out, *icon, img, nk_white); else nk_draw_symbol(out, sym, *icon, text.background, text.text, 1, font); } nk_widget_text(out, *bounds, string, len, &text, align, font); } NK_LIB int nk_do_selectable(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* remove padding */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; /* update button */ if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, 0,0,NK_SYMBOL_NONE, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_LIB int nk_do_selectable_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_image *img, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; struct nk_rect icon; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* toggle behavior */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, &icon, img, NK_SYMBOL_NONE, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_LIB int nk_do_selectable_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, enum nk_symbol_type sym, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; struct nk_rect icon; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* toggle behavior */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, &icon, 0, sym, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_API int nk_selectable_text(struct nk_context *ctx, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, &style->selectable, in, style->font); } NK_API int nk_selectable_image_text(struct nk_context *ctx, struct nk_image img, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable_image(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, &img, &style->selectable, in, style->font); } NK_API int nk_selectable_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable_symbol(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, sym, &style->selectable, in, style->font); } NK_API int nk_selectable_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, nk_flags align, int *value) { return nk_selectable_symbol_text(ctx, sym, title, nk_strlen(title), align, value); } NK_API int nk_select_text(struct nk_context *ctx, const char *str, int len, nk_flags align, int value) { nk_selectable_text(ctx, str, len, align, &value);return value; } NK_API int nk_selectable_label(struct nk_context *ctx, const char *str, nk_flags align, int *value) { return nk_selectable_text(ctx, str, nk_strlen(str), align, value); } NK_API int nk_selectable_image_label(struct nk_context *ctx,struct nk_image img, const char *str, nk_flags align, int *value) { return nk_selectable_image_text(ctx, img, str, nk_strlen(str), align, value); } NK_API int nk_select_label(struct nk_context *ctx, const char *str, nk_flags align, int value) { nk_selectable_text(ctx, str, nk_strlen(str), align, &value);return value; } NK_API int nk_select_image_label(struct nk_context *ctx, struct nk_image img, const char *str, nk_flags align, int value) { nk_selectable_image_text(ctx, img, str, nk_strlen(str), align, &value);return value; } NK_API int nk_select_image_text(struct nk_context *ctx, struct nk_image img, const char *str, int len, nk_flags align, int value) { nk_selectable_image_text(ctx, img, str, len, align, &value);return value; } NK_API int nk_select_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, int title_len, nk_flags align, int value) { nk_selectable_symbol_text(ctx, sym, title, title_len, align, &value);return value; } NK_API int nk_select_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, nk_flags align, int value) { return nk_select_symbol_text(ctx, sym, title, nk_strlen(title), align, value); } /* =============================================================== * * SLIDER * * ===============================================================*/ NK_LIB float nk_slider_behavior(nk_flags *state, struct nk_rect *logical_cursor, struct nk_rect *visual_cursor, struct nk_input *in, struct nk_rect bounds, float slider_min, float slider_max, float slider_value, float slider_step, float slider_steps) { int left_mouse_down; int left_mouse_click_in_cursor; /* check if visual cursor is being dragged */ nk_widget_state_reset(state); left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, *visual_cursor, nk_true); if (left_mouse_down && left_mouse_click_in_cursor) { float ratio = 0; const float d = in->mouse.pos.x - (visual_cursor->x+visual_cursor->w*0.5f); const float pxstep = bounds.w / slider_steps; /* only update value if the next slider step is reached */ *state = NK_WIDGET_STATE_ACTIVE; if (NK_ABS(d) >= pxstep) { const float steps = (float)((int)(NK_ABS(d) / pxstep)); slider_value += (d > 0) ? (slider_step*steps) : -(slider_step*steps); slider_value = NK_CLAMP(slider_min, slider_value, slider_max); ratio = (slider_value - slider_min)/slider_step; logical_cursor->x = bounds.x + (logical_cursor->w * ratio); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = logical_cursor->x; } } /* slider widget state */ if (nk_input_is_mouse_hovering_rect(in, bounds)) *state = NK_WIDGET_STATE_HOVERED; if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, bounds)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, bounds)) *state |= NK_WIDGET_STATE_LEFT; return slider_value; } NK_LIB void nk_draw_slider(struct nk_command_buffer *out, nk_flags state, const struct nk_style_slider *style, const struct nk_rect *bounds, const struct nk_rect *visual_cursor, float min, float value, float max) { struct nk_rect fill; struct nk_rect bar; const struct nk_style_item *background; /* select correct slider images/colors */ struct nk_color bar_color; const struct nk_style_item *cursor; NK_UNUSED(min); NK_UNUSED(max); NK_UNUSED(value); if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; bar_color = style->bar_active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; bar_color = style->bar_hover; cursor = &style->cursor_hover; } else { background = &style->normal; bar_color = style->bar_normal; cursor = &style->cursor_normal; } /* calculate slider background bar */ bar.x = bounds->x; bar.y = (visual_cursor->y + visual_cursor->h/2) - bounds->h/12; bar.w = bounds->w; bar.h = bounds->h/6; /* filled background bar style */ fill.w = (visual_cursor->x + (visual_cursor->w/2.0f)) - bar.x; fill.x = bar.x; fill.y = bar.y; fill.h = bar.h; /* draw background */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } /* draw slider bar */ nk_fill_rect(out, bar, style->rounding, bar_color); nk_fill_rect(out, fill, style->rounding, style->bar_filled); /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *visual_cursor, &cursor->data.image, nk_white); else nk_fill_circle(out, *visual_cursor, cursor->data.color); } NK_LIB float nk_do_slider(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, float min, float val, float max, float step, const struct nk_style_slider *style, struct nk_input *in, const struct nk_user_font *font) { float slider_range; float slider_min; float slider_max; float slider_value; float slider_steps; float cursor_offset; struct nk_rect visual_cursor; struct nk_rect logical_cursor; NK_ASSERT(style); NK_ASSERT(out); if (!out || !style) return 0; /* remove padding from slider bounds */ bounds.x = bounds.x + style->padding.x; bounds.y = bounds.y + style->padding.y; bounds.h = NK_MAX(bounds.h, 2*style->padding.y); bounds.w = NK_MAX(bounds.w, 2*style->padding.x + style->cursor_size.x); bounds.w -= 2 * style->padding.x; bounds.h -= 2 * style->padding.y; /* optional buttons */ if (style->show_buttons) { nk_flags ws; struct nk_rect button; button.y = bounds.y; button.w = bounds.h; button.h = bounds.h; /* decrement button */ button.x = bounds.x; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_DEFAULT, &style->dec_button, in, font)) val -= step; /* increment button */ button.x = (bounds.x + bounds.w) - button.w; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_DEFAULT, &style->inc_button, in, font)) val += step; bounds.x = bounds.x + button.w + style->spacing.x; bounds.w = bounds.w - (2*button.w + 2*style->spacing.x); } /* remove one cursor size to support visual cursor */ bounds.x += style->cursor_size.x*0.5f; bounds.w -= style->cursor_size.x; /* make sure the provided values are correct */ slider_max = NK_MAX(min, max); slider_min = NK_MIN(min, max); slider_value = NK_CLAMP(slider_min, val, slider_max); slider_range = slider_max - slider_min; slider_steps = slider_range / step; cursor_offset = (slider_value - slider_min) / step; /* calculate cursor Basically you have two cursors. One for visual representation and interaction and one for updating the actual cursor value. */ logical_cursor.h = bounds.h; logical_cursor.w = bounds.w / slider_steps; logical_cursor.x = bounds.x + (logical_cursor.w * cursor_offset); logical_cursor.y = bounds.y; visual_cursor.h = style->cursor_size.y; visual_cursor.w = style->cursor_size.x; visual_cursor.y = (bounds.y + bounds.h*0.5f) - visual_cursor.h*0.5f; visual_cursor.x = logical_cursor.x - visual_cursor.w*0.5f; slider_value = nk_slider_behavior(state, &logical_cursor, &visual_cursor, in, bounds, slider_min, slider_max, slider_value, step, slider_steps); visual_cursor.x = logical_cursor.x - visual_cursor.w*0.5f; /* draw slider */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_slider(out, *state, style, &bounds, &visual_cursor, slider_min, slider_value, slider_max); if (style->draw_end) style->draw_end(out, style->userdata); return slider_value; } NK_API int nk_slider_float(struct nk_context *ctx, float min_value, float *value, float max_value, float value_step) { struct nk_window *win; struct nk_panel *layout; struct nk_input *in; const struct nk_style *style; int ret = 0; float old_value; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(value); if (!ctx || !ctx->current || !ctx->current->layout || !value) return ret; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return ret; in = (/*state == NK_WIDGET_ROM || */ layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; old_value = *value; *value = nk_do_slider(&ctx->last_widget_state, &win->buffer, bounds, min_value, old_value, max_value, value_step, &style->slider, in, style->font); return (old_value > *value || old_value < *value); } NK_API float nk_slide_float(struct nk_context *ctx, float min, float val, float max, float step) { nk_slider_float(ctx, min, &val, max, step); return val; } NK_API int nk_slide_int(struct nk_context *ctx, int min, int val, int max, int step) { float value = (float)val; nk_slider_float(ctx, (float)min, &value, (float)max, (float)step); return (int)value; } NK_API int nk_slider_int(struct nk_context *ctx, int min, int *val, int max, int step) { int ret; float value = (float)*val; ret = nk_slider_float(ctx, (float)min, &value, (float)max, (float)step); *val = (int)value; return ret; } /* =============================================================== * * PROGRESS * * ===============================================================*/ NK_LIB nk_size nk_progress_behavior(nk_flags *state, struct nk_input *in, struct nk_rect r, struct nk_rect cursor, nk_size max, nk_size value, int modifiable) { int left_mouse_down = 0; int left_mouse_click_in_cursor = 0; nk_widget_state_reset(state); if (!in || !modifiable) return value; left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, cursor, nk_true); if (nk_input_is_mouse_hovering_rect(in, r)) *state = NK_WIDGET_STATE_HOVERED; if (in && left_mouse_down && left_mouse_click_in_cursor) { if (left_mouse_down && left_mouse_click_in_cursor) { float ratio = NK_MAX(0, (float)(in->mouse.pos.x - cursor.x)) / (float)cursor.w; value = (nk_size)NK_CLAMP(0, (float)max * ratio, (float)max); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = cursor.x + cursor.w/2.0f; *state |= NK_WIDGET_STATE_ACTIVE; } } /* set progressbar widget state */ if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, r)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, r)) *state |= NK_WIDGET_STATE_LEFT; return value; } NK_LIB void nk_draw_progress(struct nk_command_buffer *out, nk_flags state, const struct nk_style_progress *style, const struct nk_rect *bounds, const struct nk_rect *scursor, nk_size value, nk_size max) { const struct nk_style_item *background; const struct nk_style_item *cursor; NK_UNUSED(max); NK_UNUSED(value); /* select correct colors/images to draw */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER){ background = &style->hover; cursor = &style->cursor_hover; } else { background = &style->normal; cursor = &style->cursor_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } else nk_draw_image(out, *bounds, &background->data.image, nk_white); /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *scursor, style->rounding, cursor->data.color); nk_stroke_rect(out, *scursor, style->rounding, style->border, style->border_color); } else nk_draw_image(out, *scursor, &cursor->data.image, nk_white); } NK_LIB nk_size nk_do_progress(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_size value, nk_size max, int modifiable, const struct nk_style_progress *style, struct nk_input *in) { float prog_scale; nk_size prog_value; struct nk_rect cursor; NK_ASSERT(style); NK_ASSERT(out); if (!out || !style) return 0; /* calculate progressbar cursor */ cursor.w = NK_MAX(bounds.w, 2 * style->padding.x + 2 * style->border); cursor.h = NK_MAX(bounds.h, 2 * style->padding.y + 2 * style->border); cursor = nk_pad_rect(bounds, nk_vec2(style->padding.x + style->border, style->padding.y + style->border)); prog_scale = (float)value / (float)max; /* update progressbar */ prog_value = NK_MIN(value, max); prog_value = nk_progress_behavior(state, in, bounds, cursor,max, prog_value, modifiable); cursor.w = cursor.w * prog_scale; /* draw progressbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_progress(out, *state, style, &bounds, &cursor, value, max); if (style->draw_end) style->draw_end(out, style->userdata); return prog_value; } NK_API int nk_progress(struct nk_context *ctx, nk_size *cur, nk_size max, int is_modifyable) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; nk_size old_value; NK_ASSERT(ctx); NK_ASSERT(cur); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !cur) return 0; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; old_value = *cur; *cur = nk_do_progress(&ctx->last_widget_state, &win->buffer, bounds, *cur, max, is_modifyable, &style->progress, in); return (*cur != old_value); } NK_API nk_size nk_prog(struct nk_context *ctx, nk_size cur, nk_size max, int modifyable) { nk_progress(ctx, &cur, max, modifyable); return cur; } /* =============================================================== * * SCROLLBAR * * ===============================================================*/ NK_LIB float nk_scrollbar_behavior(nk_flags *state, struct nk_input *in, int has_scrolling, const struct nk_rect *scroll, const struct nk_rect *cursor, const struct nk_rect *empty0, const struct nk_rect *empty1, float scroll_offset, float target, float scroll_step, enum nk_orientation o) { nk_flags ws = 0; int left_mouse_down; int left_mouse_clicked; int left_mouse_click_in_cursor; float scroll_delta; nk_widget_state_reset(state); if (!in) return scroll_offset; left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_clicked = in->mouse.buttons[NK_BUTTON_LEFT].clicked; left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, *cursor, nk_true); if (nk_input_is_mouse_hovering_rect(in, *scroll)) *state = NK_WIDGET_STATE_HOVERED; scroll_delta = (o == NK_VERTICAL) ? in->mouse.scroll_delta.y: in->mouse.scroll_delta.x; if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) { /* update cursor by mouse dragging */ float pixel, delta; *state = NK_WIDGET_STATE_ACTIVE; if (o == NK_VERTICAL) { float cursor_y; pixel = in->mouse.delta.y; delta = (pixel / scroll->h) * target; scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll->h); cursor_y = scroll->y + ((scroll_offset/target) * scroll->h); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y = cursor_y + cursor->h/2.0f; } else { float cursor_x; pixel = in->mouse.delta.x; delta = (pixel / scroll->w) * target; scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll->w); cursor_x = scroll->x + ((scroll_offset/target) * scroll->w); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = cursor_x + cursor->w/2.0f; } } else if ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_UP) && o == NK_VERTICAL && has_scrolling)|| nk_button_behavior(&ws, *empty0, in, NK_BUTTON_DEFAULT)) { /* scroll page up by click on empty space or shortcut */ if (o == NK_VERTICAL) scroll_offset = NK_MAX(0, scroll_offset - scroll->h); else scroll_offset = NK_MAX(0, scroll_offset - scroll->w); } else if ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_DOWN) && o == NK_VERTICAL && has_scrolling) || nk_button_behavior(&ws, *empty1, in, NK_BUTTON_DEFAULT)) { /* scroll page down by click on empty space or shortcut */ if (o == NK_VERTICAL) scroll_offset = NK_MIN(scroll_offset + scroll->h, target - scroll->h); else scroll_offset = NK_MIN(scroll_offset + scroll->w, target - scroll->w); } else if (has_scrolling) { if ((scroll_delta < 0 || (scroll_delta > 0))) { /* update cursor by mouse scrolling */ scroll_offset = scroll_offset + scroll_step * (-scroll_delta); if (o == NK_VERTICAL) scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll->h); else scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll->w); } else if (nk_input_is_key_pressed(in, NK_KEY_SCROLL_START)) { /* update cursor to the beginning */ if (o == NK_VERTICAL) scroll_offset = 0; } else if (nk_input_is_key_pressed(in, NK_KEY_SCROLL_END)) { /* update cursor to the end */ if (o == NK_VERTICAL) scroll_offset = target - scroll->h; } } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, *scroll)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, *scroll)) *state |= NK_WIDGET_STATE_LEFT; return scroll_offset; } NK_LIB void nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state, const struct nk_style_scrollbar *style, const struct nk_rect *bounds, const struct nk_rect *scroll) { const struct nk_style_item *background; const struct nk_style_item *cursor; /* select correct colors/images to draw */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; } else { background = &style->normal; cursor = &style->cursor_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } else { nk_draw_image(out, *bounds, &background->data.image, nk_white); } /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *scroll, style->rounding_cursor, cursor->data.color); nk_stroke_rect(out, *scroll, style->rounding_cursor, style->border_cursor, style->cursor_border_color); } else nk_draw_image(out, *scroll, &cursor->data.image, nk_white); } NK_LIB float nk_do_scrollbarv(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect empty_north; struct nk_rect empty_south; struct nk_rect cursor; float scroll_step; float scroll_offset; float scroll_off; float scroll_ratio; NK_ASSERT(out); NK_ASSERT(style); NK_ASSERT(state); if (!out || !style) return 0; scroll.w = NK_MAX(scroll.w, 1); scroll.h = NK_MAX(scroll.h, 0); if (target <= scroll.h) return 0; /* optional scrollbar buttons */ if (style->show_buttons) { nk_flags ws; float scroll_h; struct nk_rect button; button.x = scroll.x; button.w = scroll.w; button.h = scroll.w; scroll_h = NK_MAX(scroll.h - 2 * button.h,0); scroll_step = NK_MIN(step, button_pixel_inc); /* decrement button */ button.y = scroll.y; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_REPEATER, &style->dec_button, in, font)) offset = offset - scroll_step; /* increment button */ button.y = scroll.y + scroll.h - button.h; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_REPEATER, &style->inc_button, in, font)) offset = offset + scroll_step; scroll.y = scroll.y + button.h; scroll.h = scroll_h; } /* calculate scrollbar constants */ scroll_step = NK_MIN(step, scroll.h); scroll_offset = NK_CLAMP(0, offset, target - scroll.h); scroll_ratio = scroll.h / target; scroll_off = scroll_offset / target; /* calculate scrollbar cursor bounds */ cursor.h = NK_MAX((scroll_ratio * scroll.h) - (2*style->border + 2*style->padding.y), 0); cursor.y = scroll.y + (scroll_off * scroll.h) + style->border + style->padding.y; cursor.w = scroll.w - (2 * style->border + 2 * style->padding.x); cursor.x = scroll.x + style->border + style->padding.x; /* calculate empty space around cursor */ empty_north.x = scroll.x; empty_north.y = scroll.y; empty_north.w = scroll.w; empty_north.h = NK_MAX(cursor.y - scroll.y, 0); empty_south.x = scroll.x; empty_south.y = cursor.y + cursor.h; empty_south.w = scroll.w; empty_south.h = NK_MAX((scroll.y + scroll.h) - (cursor.y + cursor.h), 0); /* update scrollbar */ scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &scroll, &cursor, &empty_north, &empty_south, scroll_offset, target, scroll_step, NK_VERTICAL); scroll_off = scroll_offset / target; cursor.y = scroll.y + (scroll_off * scroll.h) + style->border_cursor + style->padding.y; /* draw scrollbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_scrollbar(out, *state, style, &scroll, &cursor); if (style->draw_end) style->draw_end(out, style->userdata); return scroll_offset; } NK_LIB float nk_do_scrollbarh(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect cursor; struct nk_rect empty_west; struct nk_rect empty_east; float scroll_step; float scroll_offset; float scroll_off; float scroll_ratio; NK_ASSERT(out); NK_ASSERT(style); if (!out || !style) return 0; /* scrollbar background */ scroll.h = NK_MAX(scroll.h, 1); scroll.w = NK_MAX(scroll.w, 2 * scroll.h); if (target <= scroll.w) return 0; /* optional scrollbar buttons */ if (style->show_buttons) { nk_flags ws; float scroll_w; struct nk_rect button; button.y = scroll.y; button.w = scroll.h; button.h = scroll.h; scroll_w = scroll.w - 2 * button.w; scroll_step = NK_MIN(step, button_pixel_inc); /* decrement button */ button.x = scroll.x; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_REPEATER, &style->dec_button, in, font)) offset = offset - scroll_step; /* increment button */ button.x = scroll.x + scroll.w - button.w; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_REPEATER, &style->inc_button, in, font)) offset = offset + scroll_step; scroll.x = scroll.x + button.w; scroll.w = scroll_w; } /* calculate scrollbar constants */ scroll_step = NK_MIN(step, scroll.w); scroll_offset = NK_CLAMP(0, offset, target - scroll.w); scroll_ratio = scroll.w / target; scroll_off = scroll_offset / target; /* calculate cursor bounds */ cursor.w = (scroll_ratio * scroll.w) - (2*style->border + 2*style->padding.x); cursor.x = scroll.x + (scroll_off * scroll.w) + style->border + style->padding.x; cursor.h = scroll.h - (2 * style->border + 2 * style->padding.y); cursor.y = scroll.y + style->border + style->padding.y; /* calculate empty space around cursor */ empty_west.x = scroll.x; empty_west.y = scroll.y; empty_west.w = cursor.x - scroll.x; empty_west.h = scroll.h; empty_east.x = cursor.x + cursor.w; empty_east.y = scroll.y; empty_east.w = (scroll.x + scroll.w) - (cursor.x + cursor.w); empty_east.h = scroll.h; /* update scrollbar */ scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &scroll, &cursor, &empty_west, &empty_east, scroll_offset, target, scroll_step, NK_HORIZONTAL); scroll_off = scroll_offset / target; cursor.x = scroll.x + (scroll_off * scroll.w); /* draw scrollbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_scrollbar(out, *state, style, &scroll, &cursor); if (style->draw_end) style->draw_end(out, style->userdata); return scroll_offset; } /* =============================================================== * * TEXT EDITOR * * ===============================================================*/ /* stb_textedit.h - v1.8 - public domain - Sean Barrett */ struct nk_text_find { float x,y; /* position of n'th character */ float height; /* height of line */ int first_char, length; /* first char of row, and length */ int prev_first; /*_ first char of previous row */ }; struct nk_text_edit_row { float x0,x1; /* starting x location, end x location (allows for align=right, etc) */ float baseline_y_delta; /* position of baseline relative to previous row's baseline*/ float ymin,ymax; /* height of row above and below baseline */ int num_chars; }; /* forward declarations */ NK_INTERN void nk_textedit_makeundo_delete(struct nk_text_edit*, int, int); NK_INTERN void nk_textedit_makeundo_insert(struct nk_text_edit*, int, int); NK_INTERN void nk_textedit_makeundo_replace(struct nk_text_edit*, int, int, int); #define NK_TEXT_HAS_SELECTION(s) ((s)->select_start != (s)->select_end) NK_INTERN float nk_textedit_get_width(const struct nk_text_edit *edit, int line_start, int char_id, const struct nk_user_font *font) { int len = 0; nk_rune unicode = 0; const char *str = nk_str_at_const(&edit->string, line_start + char_id, &unicode, &len); return font->width(font->userdata, font->height, str, len); } NK_INTERN void nk_textedit_layout_row(struct nk_text_edit_row *r, struct nk_text_edit *edit, int line_start_id, float row_height, const struct nk_user_font *font) { int l; int glyphs = 0; nk_rune unicode; const char *remaining; int len = nk_str_len_char(&edit->string); const char *end = nk_str_get_const(&edit->string) + len; const char *text = nk_str_at_const(&edit->string, line_start_id, &unicode, &l); const struct nk_vec2 size = nk_text_calculate_text_bounds(font, text, (int)(end - text), row_height, &remaining, 0, &glyphs, NK_STOP_ON_NEW_LINE); r->x0 = 0.0f; r->x1 = size.x; r->baseline_y_delta = size.y; r->ymin = 0.0f; r->ymax = size.y; r->num_chars = glyphs; } NK_INTERN int nk_textedit_locate_coord(struct nk_text_edit *edit, float x, float y, const struct nk_user_font *font, float row_height) { struct nk_text_edit_row r; int n = edit->string.len; float base_y = 0, prev_x; int i=0, k; r.x0 = r.x1 = 0; r.ymin = r.ymax = 0; r.num_chars = 0; /* search rows to find one that straddles 'y' */ while (i < n) { nk_textedit_layout_row(&r, edit, i, row_height, font); if (r.num_chars <= 0) return n; if (i==0 && y < base_y + r.ymin) return 0; if (y < base_y + r.ymax) break; i += r.num_chars; base_y += r.baseline_y_delta; } /* below all text, return 'after' last character */ if (i >= n) return n; /* check if it's before the beginning of the line */ if (x < r.x0) return i; /* check if it's before the end of the line */ if (x < r.x1) { /* search characters in row for one that straddles 'x' */ k = i; prev_x = r.x0; for (i=0; i < r.num_chars; ++i) { float w = nk_textedit_get_width(edit, k, i, font); if (x < prev_x+w) { if (x < prev_x+w/2) return k+i; else return k+i+1; } prev_x += w; } /* shouldn't happen, but if it does, fall through to end-of-line case */ } /* if the last character is a newline, return that. * otherwise return 'after' the last character */ if (nk_str_rune_at(&edit->string, i+r.num_chars-1) == '\n') return i+r.num_chars-1; else return i+r.num_chars; } NK_LIB void nk_textedit_click(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height) { /* API click: on mouse down, move the cursor to the clicked location, * and reset the selection */ state->cursor = nk_textedit_locate_coord(state, x, y, font, row_height); state->select_start = state->cursor; state->select_end = state->cursor; state->has_preferred_x = 0; } NK_LIB void nk_textedit_drag(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height) { /* API drag: on mouse drag, move the cursor and selection endpoint * to the clicked location */ int p = nk_textedit_locate_coord(state, x, y, font, row_height); if (state->select_start == state->select_end) state->select_start = state->cursor; state->cursor = state->select_end = p; } NK_INTERN void nk_textedit_find_charpos(struct nk_text_find *find, struct nk_text_edit *state, int n, int single_line, const struct nk_user_font *font, float row_height) { /* find the x/y location of a character, and remember info about the previous * row in case we get a move-up event (for page up, we'll have to rescan) */ struct nk_text_edit_row r; int prev_start = 0; int z = state->string.len; int i=0, first; nk_zero_struct(r); if (n == z) { /* if it's at the end, then find the last line -- simpler than trying to explicitly handle this case in the regular code */ nk_textedit_layout_row(&r, state, 0, row_height, font); if (single_line) { find->first_char = 0; find->length = z; } else { while (i < z) { prev_start = i; i += r.num_chars; nk_textedit_layout_row(&r, state, i, row_height, font); } find->first_char = i; find->length = r.num_chars; } find->x = r.x1; find->y = r.ymin; find->height = r.ymax - r.ymin; find->prev_first = prev_start; return; } /* search rows to find the one that straddles character n */ find->y = 0; for(;;) { nk_textedit_layout_row(&r, state, i, row_height, font); if (n < i + r.num_chars) break; prev_start = i; i += r.num_chars; find->y += r.baseline_y_delta; } find->first_char = first = i; find->length = r.num_chars; find->height = r.ymax - r.ymin; find->prev_first = prev_start; /* now scan to find xpos */ find->x = r.x0; for (i=0; first+i < n; ++i) find->x += nk_textedit_get_width(state, first, i, font); } NK_INTERN void nk_textedit_clamp(struct nk_text_edit *state) { /* make the selection/cursor state valid if client altered the string */ int n = state->string.len; if (NK_TEXT_HAS_SELECTION(state)) { if (state->select_start > n) state->select_start = n; if (state->select_end > n) state->select_end = n; /* if clamping forced them to be equal, move the cursor to match */ if (state->select_start == state->select_end) state->cursor = state->select_start; } if (state->cursor > n) state->cursor = n; } NK_API void nk_textedit_delete(struct nk_text_edit *state, int where, int len) { /* delete characters while updating undo */ nk_textedit_makeundo_delete(state, where, len); nk_str_delete_runes(&state->string, where, len); state->has_preferred_x = 0; } NK_API void nk_textedit_delete_selection(struct nk_text_edit *state) { /* delete the section */ nk_textedit_clamp(state); if (NK_TEXT_HAS_SELECTION(state)) { if (state->select_start < state->select_end) { nk_textedit_delete(state, state->select_start, state->select_end - state->select_start); state->select_end = state->cursor = state->select_start; } else { nk_textedit_delete(state, state->select_end, state->select_start - state->select_end); state->select_start = state->cursor = state->select_end; } state->has_preferred_x = 0; } } NK_INTERN void nk_textedit_sortselection(struct nk_text_edit *state) { /* canonicalize the selection so start <= end */ if (state->select_end < state->select_start) { int temp = state->select_end; state->select_end = state->select_start; state->select_start = temp; } } NK_INTERN void nk_textedit_move_to_first(struct nk_text_edit *state) { /* move cursor to first character of selection */ if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_sortselection(state); state->cursor = state->select_start; state->select_end = state->select_start; state->has_preferred_x = 0; } } NK_INTERN void nk_textedit_move_to_last(struct nk_text_edit *state) { /* move cursor to last character of selection */ if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_sortselection(state); nk_textedit_clamp(state); state->cursor = state->select_end; state->select_start = state->select_end; state->has_preferred_x = 0; } } NK_INTERN int nk_is_word_boundary( struct nk_text_edit *state, int idx) { int len; nk_rune c; if (idx <= 0) return 1; if (!nk_str_at_rune(&state->string, idx, &c, &len)) return 1; return (c == ' ' || c == '\t' ||c == 0x3000 || c == ',' || c == ';' || c == '(' || c == ')' || c == '{' || c == '}' || c == '[' || c == ']' || c == '|'); } NK_INTERN int nk_textedit_move_to_word_previous(struct nk_text_edit *state) { int c = state->cursor - 1; while( c >= 0 && !nk_is_word_boundary(state, c)) --c; if( c < 0 ) c = 0; return c; } NK_INTERN int nk_textedit_move_to_word_next(struct nk_text_edit *state) { const int len = state->string.len; int c = state->cursor+1; while( c < len && !nk_is_word_boundary(state, c)) ++c; if( c > len ) c = len; return c; } NK_INTERN void nk_textedit_prep_selection_at_cursor(struct nk_text_edit *state) { /* update selection and cursor to match each other */ if (!NK_TEXT_HAS_SELECTION(state)) state->select_start = state->select_end = state->cursor; else state->cursor = state->select_end; } NK_API int nk_textedit_cut(struct nk_text_edit *state) { /* API cut: delete selection */ if (state->mode == NK_TEXT_EDIT_MODE_VIEW) return 0; if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_delete_selection(state); /* implicitly clamps */ state->has_preferred_x = 0; return 1; } return 0; } NK_API int nk_textedit_paste(struct nk_text_edit *state, char const *ctext, int len) { /* API paste: replace existing selection with passed-in text */ int glyphs; const char *text = (const char *) ctext; if (state->mode == NK_TEXT_EDIT_MODE_VIEW) return 0; /* if there's a selection, the paste should delete it */ nk_textedit_clamp(state); nk_textedit_delete_selection(state); /* try to insert the characters */ glyphs = nk_utf_len(ctext, len); if (nk_str_insert_text_char(&state->string, state->cursor, text, len)) { nk_textedit_makeundo_insert(state, state->cursor, glyphs); state->cursor += len; state->has_preferred_x = 0; return 1; } /* remove the undo since we didn't actually insert the characters */ if (state->undo.undo_point) --state->undo.undo_point; return 0; } NK_API void nk_textedit_text(struct nk_text_edit *state, const char *text, int total_len) { nk_rune unicode; int glyph_len; int text_len = 0; NK_ASSERT(state); NK_ASSERT(text); if (!text || !total_len || state->mode == NK_TEXT_EDIT_MODE_VIEW) return; glyph_len = nk_utf_decode(text, &unicode, total_len); while ((text_len < total_len) && glyph_len) { /* don't insert a backward delete, just process the event */ if (unicode == 127) goto next; /* can't add newline in single-line mode */ if (unicode == '\n' && state->single_line) goto next; /* filter incoming text */ if (state->filter && !state->filter(state, unicode)) goto next; if (!NK_TEXT_HAS_SELECTION(state) && state->cursor < state->string.len) { if (state->mode == NK_TEXT_EDIT_MODE_REPLACE) { nk_textedit_makeundo_replace(state, state->cursor, 1, 1); nk_str_delete_runes(&state->string, state->cursor, 1); } if (nk_str_insert_text_utf8(&state->string, state->cursor, text+text_len, 1)) { ++state->cursor; state->has_preferred_x = 0; } } else { nk_textedit_delete_selection(state); /* implicitly clamps */ if (nk_str_insert_text_utf8(&state->string, state->cursor, text+text_len, 1)) { nk_textedit_makeundo_insert(state, state->cursor, 1); ++state->cursor; state->has_preferred_x = 0; } } next: text_len += glyph_len; glyph_len = nk_utf_decode(text + text_len, &unicode, total_len-text_len); } } NK_LIB void nk_textedit_key(struct nk_text_edit *state, enum nk_keys key, int shift_mod, const struct nk_user_font *font, float row_height) { retry: switch (key) { case NK_KEY_NONE: case NK_KEY_CTRL: case NK_KEY_ENTER: case NK_KEY_SHIFT: case NK_KEY_TAB: case NK_KEY_COPY: case NK_KEY_CUT: case NK_KEY_PASTE: case NK_KEY_MAX: default: break; case NK_KEY_TEXT_UNDO: nk_textedit_undo(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_REDO: nk_textedit_redo(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_SELECT_ALL: nk_textedit_select_all(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_INSERT_MODE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) state->mode = NK_TEXT_EDIT_MODE_INSERT; break; case NK_KEY_TEXT_REPLACE_MODE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) state->mode = NK_TEXT_EDIT_MODE_REPLACE; break; case NK_KEY_TEXT_RESET_MODE: if (state->mode == NK_TEXT_EDIT_MODE_INSERT || state->mode == NK_TEXT_EDIT_MODE_REPLACE) state->mode = NK_TEXT_EDIT_MODE_VIEW; break; case NK_KEY_LEFT: if (shift_mod) { nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); /* move selection left */ if (state->select_end > 0) --state->select_end; state->cursor = state->select_end; state->has_preferred_x = 0; } else { /* if currently there's a selection, * move cursor to start of selection */ if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); else if (state->cursor > 0) --state->cursor; state->has_preferred_x = 0; } break; case NK_KEY_RIGHT: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); /* move selection right */ ++state->select_end; nk_textedit_clamp(state); state->cursor = state->select_end; state->has_preferred_x = 0; } else { /* if currently there's a selection, * move cursor to end of selection */ if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); else ++state->cursor; nk_textedit_clamp(state); state->has_preferred_x = 0; } break; case NK_KEY_TEXT_WORD_LEFT: if (shift_mod) { if( !NK_TEXT_HAS_SELECTION( state ) ) nk_textedit_prep_selection_at_cursor(state); state->cursor = nk_textedit_move_to_word_previous(state); state->select_end = state->cursor; nk_textedit_clamp(state ); } else { if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); else { state->cursor = nk_textedit_move_to_word_previous(state); nk_textedit_clamp(state ); } } break; case NK_KEY_TEXT_WORD_RIGHT: if (shift_mod) { if( !NK_TEXT_HAS_SELECTION( state ) ) nk_textedit_prep_selection_at_cursor(state); state->cursor = nk_textedit_move_to_word_next(state); state->select_end = state->cursor; nk_textedit_clamp(state); } else { if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); else { state->cursor = nk_textedit_move_to_word_next(state); nk_textedit_clamp(state ); } } break; case NK_KEY_DOWN: { struct nk_text_find find; struct nk_text_edit_row row; int i, sel = shift_mod; if (state->single_line) { /* on windows, up&down in single-line behave like left&right */ key = NK_KEY_RIGHT; goto retry; } if (sel) nk_textedit_prep_selection_at_cursor(state); else if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); /* compute current position of cursor point */ nk_textedit_clamp(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); /* now find character position down a row */ if (find.length) { float x; float goal_x = state->has_preferred_x ? state->preferred_x : find.x; int start = find.first_char + find.length; state->cursor = start; nk_textedit_layout_row(&row, state, state->cursor, row_height, font); x = row.x0; for (i=0; i < row.num_chars && x < row.x1; ++i) { float dx = nk_textedit_get_width(state, start, i, font); x += dx; if (x > goal_x) break; ++state->cursor; } nk_textedit_clamp(state); state->has_preferred_x = 1; state->preferred_x = goal_x; if (sel) state->select_end = state->cursor; } } break; case NK_KEY_UP: { struct nk_text_find find; struct nk_text_edit_row row; int i, sel = shift_mod; if (state->single_line) { /* on windows, up&down become left&right */ key = NK_KEY_LEFT; goto retry; } if (sel) nk_textedit_prep_selection_at_cursor(state); else if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); /* compute current position of cursor point */ nk_textedit_clamp(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); /* can only go up if there's a previous row */ if (find.prev_first != find.first_char) { /* now find character position up a row */ float x; float goal_x = state->has_preferred_x ? state->preferred_x : find.x; state->cursor = find.prev_first; nk_textedit_layout_row(&row, state, state->cursor, row_height, font); x = row.x0; for (i=0; i < row.num_chars && x < row.x1; ++i) { float dx = nk_textedit_get_width(state, find.prev_first, i, font); x += dx; if (x > goal_x) break; ++state->cursor; } nk_textedit_clamp(state); state->has_preferred_x = 1; state->preferred_x = goal_x; if (sel) state->select_end = state->cursor; } } break; case NK_KEY_DEL: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) break; if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_delete_selection(state); else { int n = state->string.len; if (state->cursor < n) nk_textedit_delete(state, state->cursor, 1); } state->has_preferred_x = 0; break; case NK_KEY_BACKSPACE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) break; if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_delete_selection(state); else { nk_textedit_clamp(state); if (state->cursor > 0) { nk_textedit_delete(state, state->cursor-1, 1); --state->cursor; } } state->has_preferred_x = 0; break; case NK_KEY_TEXT_START: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); state->cursor = state->select_end = 0; state->has_preferred_x = 0; } else { state->cursor = state->select_start = state->select_end = 0; state->has_preferred_x = 0; } break; case NK_KEY_TEXT_END: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); state->cursor = state->select_end = state->string.len; state->has_preferred_x = 0; } else { state->cursor = state->string.len; state->select_start = state->select_end = 0; state->has_preferred_x = 0; } break; case NK_KEY_TEXT_LINE_START: { if (shift_mod) { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); if (state->string.len && state->cursor == state->string.len) --state->cursor; nk_textedit_find_charpos(&find, state,state->cursor, state->single_line, font, row_height); state->cursor = state->select_end = find.first_char; state->has_preferred_x = 0; } else { struct nk_text_find find; if (state->string.len && state->cursor == state->string.len) --state->cursor; nk_textedit_clamp(state); nk_textedit_move_to_first(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->cursor = find.first_char; state->has_preferred_x = 0; } } break; case NK_KEY_TEXT_LINE_END: { if (shift_mod) { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->has_preferred_x = 0; state->cursor = find.first_char + find.length; if (find.length > 0 && nk_str_rune_at(&state->string, state->cursor-1) == '\n') --state->cursor; state->select_end = state->cursor; } else { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_move_to_first(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->has_preferred_x = 0; state->cursor = find.first_char + find.length; if (find.length > 0 && nk_str_rune_at(&state->string, state->cursor-1) == '\n') --state->cursor; }} break; } } NK_INTERN void nk_textedit_flush_redo(struct nk_text_undo_state *state) { state->redo_point = NK_TEXTEDIT_UNDOSTATECOUNT; state->redo_char_point = NK_TEXTEDIT_UNDOCHARCOUNT; } NK_INTERN void nk_textedit_discard_undo(struct nk_text_undo_state *state) { /* discard the oldest entry in the undo list */ if (state->undo_point > 0) { /* if the 0th undo state has characters, clean those up */ if (state->undo_rec[0].char_storage >= 0) { int n = state->undo_rec[0].insert_length, i; /* delete n characters from all other records */ state->undo_char_point = (short)(state->undo_char_point - n); NK_MEMCPY(state->undo_char, state->undo_char + n, (nk_size)state->undo_char_point*sizeof(nk_rune)); for (i=0; i < state->undo_point; ++i) { if (state->undo_rec[i].char_storage >= 0) state->undo_rec[i].char_storage = (short) (state->undo_rec[i].char_storage - n); } } --state->undo_point; NK_MEMCPY(state->undo_rec, state->undo_rec+1, (nk_size)((nk_size)state->undo_point * sizeof(state->undo_rec[0]))); } } NK_INTERN void nk_textedit_discard_redo(struct nk_text_undo_state *state) { /* discard the oldest entry in the redo list--it's bad if this ever happens, but because undo & redo have to store the actual characters in different cases, the redo character buffer can fill up even though the undo buffer didn't */ nk_size num; int k = NK_TEXTEDIT_UNDOSTATECOUNT-1; if (state->redo_point <= k) { /* if the k'th undo state has characters, clean those up */ if (state->undo_rec[k].char_storage >= 0) { int n = state->undo_rec[k].insert_length, i; /* delete n characters from all other records */ state->redo_char_point = (short)(state->redo_char_point + n); num = (nk_size)(NK_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point); NK_MEMCPY(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, num * sizeof(char)); for (i = state->redo_point; i < k; ++i) { if (state->undo_rec[i].char_storage >= 0) { state->undo_rec[i].char_storage = (short) (state->undo_rec[i].char_storage + n); } } } ++state->redo_point; num = (nk_size)(NK_TEXTEDIT_UNDOSTATECOUNT - state->redo_point); if (num) NK_MEMCPY(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, num * sizeof(state->undo_rec[0])); } } NK_INTERN struct nk_text_undo_record* nk_textedit_create_undo_record(struct nk_text_undo_state *state, int numchars) { /* any time we create a new undo record, we discard redo*/ nk_textedit_flush_redo(state); /* if we have no free records, we have to make room, * by sliding the existing records down */ if (state->undo_point == NK_TEXTEDIT_UNDOSTATECOUNT) nk_textedit_discard_undo(state); /* if the characters to store won't possibly fit in the buffer, * we can't undo */ if (numchars > NK_TEXTEDIT_UNDOCHARCOUNT) { state->undo_point = 0; state->undo_char_point = 0; return 0; } /* if we don't have enough free characters in the buffer, * we have to make room */ while (state->undo_char_point + numchars > NK_TEXTEDIT_UNDOCHARCOUNT) nk_textedit_discard_undo(state); return &state->undo_rec[state->undo_point++]; } NK_INTERN nk_rune* nk_textedit_createundo(struct nk_text_undo_state *state, int pos, int insert_len, int delete_len) { struct nk_text_undo_record *r = nk_textedit_create_undo_record(state, insert_len); if (r == 0) return 0; r->where = pos; r->insert_length = (short) insert_len; r->delete_length = (short) delete_len; if (insert_len == 0) { r->char_storage = -1; return 0; } else { r->char_storage = state->undo_char_point; state->undo_char_point = (short)(state->undo_char_point + insert_len); return &state->undo_char[r->char_storage]; } } NK_API void nk_textedit_undo(struct nk_text_edit *state) { struct nk_text_undo_state *s = &state->undo; struct nk_text_undo_record u, *r; if (s->undo_point == 0) return; /* we need to do two things: apply the undo record, and create a redo record */ u = s->undo_rec[s->undo_point-1]; r = &s->undo_rec[s->redo_point-1]; r->char_storage = -1; r->insert_length = u.delete_length; r->delete_length = u.insert_length; r->where = u.where; if (u.delete_length) { /* if the undo record says to delete characters, then the redo record will need to re-insert the characters that get deleted, so we need to store them. there are three cases: - there's enough room to store the characters - characters stored for *redoing* don't leave room for redo - characters stored for *undoing* don't leave room for redo if the last is true, we have to bail */ if (s->undo_char_point + u.delete_length >= NK_TEXTEDIT_UNDOCHARCOUNT) { /* the undo records take up too much character space; there's no space * to store the redo characters */ r->insert_length = 0; } else { int i; /* there's definitely room to store the characters eventually */ while (s->undo_char_point + u.delete_length > s->redo_char_point) { /* there's currently not enough room, so discard a redo record */ nk_textedit_discard_redo(s); /* should never happen: */ if (s->redo_point == NK_TEXTEDIT_UNDOSTATECOUNT) return; } r = &s->undo_rec[s->redo_point-1]; r->char_storage = (short)(s->redo_char_point - u.delete_length); s->redo_char_point = (short)(s->redo_char_point - u.delete_length); /* now save the characters */ for (i=0; i < u.delete_length; ++i) s->undo_char[r->char_storage + i] = nk_str_rune_at(&state->string, u.where + i); } /* now we can carry out the deletion */ nk_str_delete_runes(&state->string, u.where, u.delete_length); } /* check type of recorded action: */ if (u.insert_length) { /* easy case: was a deletion, so we need to insert n characters */ nk_str_insert_text_runes(&state->string, u.where, &s->undo_char[u.char_storage], u.insert_length); s->undo_char_point = (short)(s->undo_char_point - u.insert_length); } state->cursor = (short)(u.where + u.insert_length); s->undo_point--; s->redo_point--; } NK_API void nk_textedit_redo(struct nk_text_edit *state) { struct nk_text_undo_state *s = &state->undo; struct nk_text_undo_record *u, r; if (s->redo_point == NK_TEXTEDIT_UNDOSTATECOUNT) return; /* we need to do two things: apply the redo record, and create an undo record */ u = &s->undo_rec[s->undo_point]; r = s->undo_rec[s->redo_point]; /* we KNOW there must be room for the undo record, because the redo record was derived from an undo record */ u->delete_length = r.insert_length; u->insert_length = r.delete_length; u->where = r.where; u->char_storage = -1; if (r.delete_length) { /* the redo record requires us to delete characters, so the undo record needs to store the characters */ if (s->undo_char_point + u->insert_length > s->redo_char_point) { u->insert_length = 0; u->delete_length = 0; } else { int i; u->char_storage = s->undo_char_point; s->undo_char_point = (short)(s->undo_char_point + u->insert_length); /* now save the characters */ for (i=0; i < u->insert_length; ++i) { s->undo_char[u->char_storage + i] = nk_str_rune_at(&state->string, u->where + i); } } nk_str_delete_runes(&state->string, r.where, r.delete_length); } if (r.insert_length) { /* easy case: need to insert n characters */ nk_str_insert_text_runes(&state->string, r.where, &s->undo_char[r.char_storage], r.insert_length); } state->cursor = r.where + r.insert_length; s->undo_point++; s->redo_point++; } NK_INTERN void nk_textedit_makeundo_insert(struct nk_text_edit *state, int where, int length) { nk_textedit_createundo(&state->undo, where, 0, length); } NK_INTERN void nk_textedit_makeundo_delete(struct nk_text_edit *state, int where, int length) { int i; nk_rune *p = nk_textedit_createundo(&state->undo, where, length, 0); if (p) { for (i=0; i < length; ++i) p[i] = nk_str_rune_at(&state->string, where+i); } } NK_INTERN void nk_textedit_makeundo_replace(struct nk_text_edit *state, int where, int old_length, int new_length) { int i; nk_rune *p = nk_textedit_createundo(&state->undo, where, old_length, new_length); if (p) { for (i=0; i < old_length; ++i) p[i] = nk_str_rune_at(&state->string, where+i); } } NK_LIB void nk_textedit_clear_state(struct nk_text_edit *state, enum nk_text_edit_type type, nk_plugin_filter filter) { /* reset the state to default */ state->undo.undo_point = 0; state->undo.undo_char_point = 0; state->undo.redo_point = NK_TEXTEDIT_UNDOSTATECOUNT; state->undo.redo_char_point = NK_TEXTEDIT_UNDOCHARCOUNT; state->select_end = state->select_start = 0; state->cursor = 0; state->has_preferred_x = 0; state->preferred_x = 0; state->cursor_at_end_of_line = 0; state->initialized = 1; state->single_line = (unsigned char)(type == NK_TEXT_EDIT_SINGLE_LINE); state->mode = NK_TEXT_EDIT_MODE_VIEW; state->filter = filter; state->scrollbar = nk_vec2(0,0); } NK_API void nk_textedit_init_fixed(struct nk_text_edit *state, void *memory, nk_size size) { NK_ASSERT(state); NK_ASSERT(memory); if (!state || !memory || !size) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init_fixed(&state->string, memory, size); } NK_API void nk_textedit_init(struct nk_text_edit *state, struct nk_allocator *alloc, nk_size size) { NK_ASSERT(state); NK_ASSERT(alloc); if (!state || !alloc) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init(&state->string, alloc, size); } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_textedit_init_default(struct nk_text_edit *state) { NK_ASSERT(state); if (!state) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init_default(&state->string); } #endif NK_API void nk_textedit_select_all(struct nk_text_edit *state) { NK_ASSERT(state); state->select_start = 0; state->select_end = state->string.len; } NK_API void nk_textedit_free(struct nk_text_edit *state) { NK_ASSERT(state); if (!state) return; nk_str_free(&state->string); } /* =============================================================== * * FILTER * * ===============================================================*/ NK_API int nk_filter_default(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(unicode); NK_UNUSED(box); return nk_true; } NK_API int nk_filter_ascii(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode > 128) return nk_false; else return nk_true; } NK_API int nk_filter_float(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && unicode != '.' && unicode != '-') return nk_false; else return nk_true; } NK_API int nk_filter_decimal(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && unicode != '-') return nk_false; else return nk_true; } NK_API int nk_filter_hex(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && (unicode < 'a' || unicode > 'f') && (unicode < 'A' || unicode > 'F')) return nk_false; else return nk_true; } NK_API int nk_filter_oct(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode < '0' || unicode > '7') return nk_false; else return nk_true; } NK_API int nk_filter_binary(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode != '0' && unicode != '1') return nk_false; else return nk_true; } /* =============================================================== * * EDIT * * ===============================================================*/ NK_LIB void nk_edit_draw_text(struct nk_command_buffer *out, const struct nk_style_edit *style, float pos_x, float pos_y, float x_offset, const char *text, int byte_len, float row_height, const struct nk_user_font *font, struct nk_color background, struct nk_color foreground, int is_selected) { NK_ASSERT(out); NK_ASSERT(font); NK_ASSERT(style); if (!text || !byte_len || !out || !style) return; {int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; float line_width = 0; float glyph_width; const char *line = text; float line_offset = 0; int line_count = 0; struct nk_text txt; txt.padding = nk_vec2(0,0); txt.background = background; txt.text = foreground; glyph_len = nk_utf_decode(text+text_len, &unicode, byte_len-text_len); if (!glyph_len) return; while ((text_len < byte_len) && glyph_len) { if (unicode == '\n') { /* new line separator so draw previous line */ struct nk_rect label; label.y = pos_y + line_offset; label.h = row_height; label.w = line_width; label.x = pos_x; if (!line_count) label.x += x_offset; if (is_selected) /* selection needs to draw different background color */ nk_fill_rect(out, label, 0, background); nk_widget_text(out, label, line, (int)((text + text_len) - line), &txt, NK_TEXT_CENTERED, font); text_len++; line_count++; line_width = 0; line = text + text_len; line_offset += row_height; glyph_len = nk_utf_decode(text + text_len, &unicode, (int)(byte_len-text_len)); continue; } if (unicode == '\r') { text_len++; glyph_len = nk_utf_decode(text + text_len, &unicode, byte_len-text_len); continue; } glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); line_width += (float)glyph_width; text_len += glyph_len; glyph_len = nk_utf_decode(text + text_len, &unicode, byte_len-text_len); continue; } if (line_width > 0) { /* draw last line */ struct nk_rect label; label.y = pos_y + line_offset; label.h = row_height; label.w = line_width; label.x = pos_x; if (!line_count) label.x += x_offset; if (is_selected) nk_fill_rect(out, label, 0, background); nk_widget_text(out, label, line, (int)((text + text_len) - line), &txt, NK_TEXT_LEFT, font); }} } NK_LIB nk_flags nk_do_edit(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_flags flags, nk_plugin_filter filter, struct nk_text_edit *edit, const struct nk_style_edit *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect area; nk_flags ret = 0; float row_height; char prev_state = 0; char is_hovered = 0; char select_all = 0; char cursor_follow = 0; struct nk_rect old_clip; struct nk_rect clip; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(style); if (!state || !out || !style) return ret; /* visible text area calculation */ area.x = bounds.x + style->padding.x + style->border; area.y = bounds.y + style->padding.y + style->border; area.w = bounds.w - (2.0f * style->padding.x + 2 * style->border); area.h = bounds.h - (2.0f * style->padding.y + 2 * style->border); if (flags & NK_EDIT_MULTILINE) area.w = NK_MAX(0, area.w - style->scrollbar_size.x); row_height = (flags & NK_EDIT_MULTILINE)? font->height + style->row_padding: area.h; /* calculate clipping rectangle */ old_clip = out->clip; nk_unify(&clip, &old_clip, area.x, area.y, area.x + area.w, area.y + area.h); /* update edit state */ prev_state = (char)edit->active; is_hovered = (char)nk_input_is_mouse_hovering_rect(in, bounds); if (in && in->mouse.buttons[NK_BUTTON_LEFT].clicked && in->mouse.buttons[NK_BUTTON_LEFT].down) { edit->active = NK_INBOX(in->mouse.pos.x, in->mouse.pos.y, bounds.x, bounds.y, bounds.w, bounds.h); } /* (de)activate text editor */ if (!prev_state && edit->active) { const enum nk_text_edit_type type = (flags & NK_EDIT_MULTILINE) ? NK_TEXT_EDIT_MULTI_LINE: NK_TEXT_EDIT_SINGLE_LINE; nk_textedit_clear_state(edit, type, filter); if (flags & NK_EDIT_AUTO_SELECT) select_all = nk_true; if (flags & NK_EDIT_GOTO_END_ON_ACTIVATE) { edit->cursor = edit->string.len; in = 0; } } else if (!edit->active) edit->mode = NK_TEXT_EDIT_MODE_VIEW; if (flags & NK_EDIT_READ_ONLY) edit->mode = NK_TEXT_EDIT_MODE_VIEW; else if (flags & NK_EDIT_ALWAYS_INSERT_MODE) edit->mode = NK_TEXT_EDIT_MODE_INSERT; ret = (edit->active) ? NK_EDIT_ACTIVE: NK_EDIT_INACTIVE; if (prev_state != edit->active) ret |= (edit->active) ? NK_EDIT_ACTIVATED: NK_EDIT_DEACTIVATED; /* handle user input */ if (edit->active && in) { int shift_mod = in->keyboard.keys[NK_KEY_SHIFT].down; const float mouse_x = (in->mouse.pos.x - area.x) + edit->scrollbar.x; const float mouse_y = (in->mouse.pos.y - area.y) + edit->scrollbar.y; /* mouse click handler */ is_hovered = (char)nk_input_is_mouse_hovering_rect(in, area); if (select_all) { nk_textedit_select_all(edit); } else if (is_hovered && in->mouse.buttons[NK_BUTTON_LEFT].down && in->mouse.buttons[NK_BUTTON_LEFT].clicked) { nk_textedit_click(edit, mouse_x, mouse_y, font, row_height); } else if (is_hovered && in->mouse.buttons[NK_BUTTON_LEFT].down && (in->mouse.delta.x != 0.0f || in->mouse.delta.y != 0.0f)) { nk_textedit_drag(edit, mouse_x, mouse_y, font, row_height); cursor_follow = nk_true; } else if (is_hovered && in->mouse.buttons[NK_BUTTON_RIGHT].clicked && in->mouse.buttons[NK_BUTTON_RIGHT].down) { nk_textedit_key(edit, NK_KEY_TEXT_WORD_LEFT, nk_false, font, row_height); nk_textedit_key(edit, NK_KEY_TEXT_WORD_RIGHT, nk_true, font, row_height); cursor_follow = nk_true; } {int i; /* keyboard input */ int old_mode = edit->mode; for (i = 0; i < NK_KEY_MAX; ++i) { if (i == NK_KEY_ENTER || i == NK_KEY_TAB) continue; /* special case */ if (nk_input_is_key_pressed(in, (enum nk_keys)i)) { nk_textedit_key(edit, (enum nk_keys)i, shift_mod, font, row_height); cursor_follow = nk_true; } } if (old_mode != edit->mode) { in->keyboard.text_len = 0; }} /* text input */ edit->filter = filter; if (in->keyboard.text_len) { nk_textedit_text(edit, in->keyboard.text, in->keyboard.text_len); cursor_follow = nk_true; in->keyboard.text_len = 0; } /* enter key handler */ if (nk_input_is_key_pressed(in, NK_KEY_ENTER)) { cursor_follow = nk_true; if (flags & NK_EDIT_CTRL_ENTER_NEWLINE && shift_mod) nk_textedit_text(edit, "\n", 1); else if (flags & NK_EDIT_SIG_ENTER) ret |= NK_EDIT_COMMITED; else nk_textedit_text(edit, "\n", 1); } /* cut & copy handler */ {int copy= nk_input_is_key_pressed(in, NK_KEY_COPY); int cut = nk_input_is_key_pressed(in, NK_KEY_CUT); if ((copy || cut) && (flags & NK_EDIT_CLIPBOARD)) { int glyph_len; nk_rune unicode; const char *text; int b = edit->select_start; int e = edit->select_end; int begin = NK_MIN(b, e); int end = NK_MAX(b, e); text = nk_str_at_const(&edit->string, begin, &unicode, &glyph_len); if (edit->clip.copy) edit->clip.copy(edit->clip.userdata, text, end - begin); if (cut && !(flags & NK_EDIT_READ_ONLY)){ nk_textedit_cut(edit); cursor_follow = nk_true; } }} /* paste handler */ {int paste = nk_input_is_key_pressed(in, NK_KEY_PASTE); if (paste && (flags & NK_EDIT_CLIPBOARD) && edit->clip.paste) { edit->clip.paste(edit->clip.userdata, edit); cursor_follow = nk_true; }} /* tab handler */ {int tab = nk_input_is_key_pressed(in, NK_KEY_TAB); if (tab && (flags & NK_EDIT_ALLOW_TAB)) { nk_textedit_text(edit, " ", 4); cursor_follow = nk_true; }} } /* set widget state */ if (edit->active) *state = NK_WIDGET_STATE_ACTIVE; else nk_widget_state_reset(state); if (is_hovered) *state |= NK_WIDGET_STATE_HOVERED; /* DRAW EDIT */ {const char *text = nk_str_get_const(&edit->string); int len = nk_str_len_char(&edit->string); {/* select background colors/images */ const struct nk_style_item *background; if (*state & NK_WIDGET_STATE_ACTIVED) background = &style->active; else if (*state & NK_WIDGET_STATE_HOVER) background = &style->hover; else background = &style->normal; /* draw background frame */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_stroke_rect(out, bounds, style->rounding, style->border, style->border_color); nk_fill_rect(out, bounds, style->rounding, background->data.color); } else nk_draw_image(out, bounds, &background->data.image, nk_white);} area.w = NK_MAX(0, area.w - style->cursor_size); if (edit->active) { int total_lines = 1; struct nk_vec2 text_size = nk_vec2(0,0); /* text pointer positions */ const char *cursor_ptr = 0; const char *select_begin_ptr = 0; const char *select_end_ptr = 0; /* 2D pixel positions */ struct nk_vec2 cursor_pos = nk_vec2(0,0); struct nk_vec2 selection_offset_start = nk_vec2(0,0); struct nk_vec2 selection_offset_end = nk_vec2(0,0); int selection_begin = NK_MIN(edit->select_start, edit->select_end); int selection_end = NK_MAX(edit->select_start, edit->select_end); /* calculate total line count + total space + cursor/selection position */ float line_width = 0.0f; if (text && len) { /* utf8 encoding */ float glyph_width; int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; int glyphs = 0; int row_begin = 0; glyph_len = nk_utf_decode(text, &unicode, len); glyph_width = font->width(font->userdata, font->height, text, glyph_len); line_width = 0; /* iterate all lines */ while ((text_len < len) && glyph_len) { /* set cursor 2D position and line */ if (!cursor_ptr && glyphs == edit->cursor) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ cursor_pos.y = (float)(total_lines-1) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); cursor_pos.x = row_size.x; cursor_ptr = text + text_len; } /* set start selection 2D position and line */ if (!select_begin_ptr && edit->select_start != edit->select_end && glyphs == selection_begin) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ selection_offset_start.y = (float)(NK_MAX(total_lines-1,0)) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); selection_offset_start.x = row_size.x; select_begin_ptr = text + text_len; } /* set end selection 2D position and line */ if (!select_end_ptr && edit->select_start != edit->select_end && glyphs == selection_end) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ selection_offset_end.y = (float)(total_lines-1) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); selection_offset_end.x = row_size.x; select_end_ptr = text + text_len; } if (unicode == '\n') { text_size.x = NK_MAX(text_size.x, line_width); total_lines++; line_width = 0; text_len++; glyphs++; row_begin = text_len; glyph_len = nk_utf_decode(text + text_len, &unicode, len-text_len); glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); continue; } glyphs++; text_len += glyph_len; line_width += (float)glyph_width; glyph_len = nk_utf_decode(text + text_len, &unicode, len-text_len); glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); continue; } text_size.y = (float)total_lines * row_height; /* handle case when cursor is at end of text buffer */ if (!cursor_ptr && edit->cursor == edit->string.len) { cursor_pos.x = line_width; cursor_pos.y = text_size.y - row_height; } } { /* scrollbar */ if (cursor_follow) { /* update scrollbar to follow cursor */ if (!(flags & NK_EDIT_NO_HORIZONTAL_SCROLL)) { /* horizontal scroll */ const float scroll_increment = area.w * 0.25f; if (cursor_pos.x < edit->scrollbar.x) edit->scrollbar.x = (float)(int)NK_MAX(0.0f, cursor_pos.x - scroll_increment); if (cursor_pos.x >= edit->scrollbar.x + area.w) edit->scrollbar.x = (float)(int)NK_MAX(0.0f, edit->scrollbar.x + scroll_increment); } else edit->scrollbar.x = 0; if (flags & NK_EDIT_MULTILINE) { /* vertical scroll */ if (cursor_pos.y < edit->scrollbar.y) edit->scrollbar.y = NK_MAX(0.0f, cursor_pos.y - row_height); if (cursor_pos.y >= edit->scrollbar.y + area.h) edit->scrollbar.y = edit->scrollbar.y + row_height; } else edit->scrollbar.y = 0; } /* scrollbar widget */ if (flags & NK_EDIT_MULTILINE) { nk_flags ws; struct nk_rect scroll; float scroll_target; float scroll_offset; float scroll_step; float scroll_inc; scroll = area; scroll.x = (bounds.x + bounds.w - style->border) - style->scrollbar_size.x; scroll.w = style->scrollbar_size.x; scroll_offset = edit->scrollbar.y; scroll_step = scroll.h * 0.10f; scroll_inc = scroll.h * 0.01f; scroll_target = text_size.y; edit->scrollbar.y = nk_do_scrollbarv(&ws, out, scroll, 0, scroll_offset, scroll_target, scroll_step, scroll_inc, &style->scrollbar, in, font); } } /* draw text */ {struct nk_color background_color; struct nk_color text_color; struct nk_color sel_background_color; struct nk_color sel_text_color; struct nk_color cursor_color; struct nk_color cursor_text_color; const struct nk_style_item *background; nk_push_scissor(out, clip); /* select correct colors to draw */ if (*state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text_color = style->text_active; sel_text_color = style->selected_text_hover; sel_background_color = style->selected_hover; cursor_color = style->cursor_hover; cursor_text_color = style->cursor_text_hover; } else if (*state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text_color = style->text_hover; sel_text_color = style->selected_text_hover; sel_background_color = style->selected_hover; cursor_text_color = style->cursor_text_hover; cursor_color = style->cursor_hover; } else { background = &style->normal; text_color = style->text_normal; sel_text_color = style->selected_text_normal; sel_background_color = style->selected_normal; cursor_color = style->cursor_normal; cursor_text_color = style->cursor_text_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) background_color = nk_rgba(0,0,0,0); else background_color = background->data.color; if (edit->select_start == edit->select_end) { /* no selection so just draw the complete text */ const char *begin = nk_str_get_const(&edit->string); int l = nk_str_len_char(&edit->string); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, background_color, text_color, nk_false); } else { /* edit has selection so draw 1-3 text chunks */ if (edit->select_start != edit->select_end && selection_begin > 0){ /* draw unselected text before selection */ const char *begin = nk_str_get_const(&edit->string); NK_ASSERT(select_begin_ptr); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, (int)(select_begin_ptr - begin), row_height, font, background_color, text_color, nk_false); } if (edit->select_start != edit->select_end) { /* draw selected text */ NK_ASSERT(select_begin_ptr); if (!select_end_ptr) { const char *begin = nk_str_get_const(&edit->string); select_end_ptr = begin + nk_str_len_char(&edit->string); } nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y + selection_offset_start.y - edit->scrollbar.y, selection_offset_start.x, select_begin_ptr, (int)(select_end_ptr - select_begin_ptr), row_height, font, sel_background_color, sel_text_color, nk_true); } if ((edit->select_start != edit->select_end && selection_end < edit->string.len)) { /* draw unselected text after selected text */ const char *begin = select_end_ptr; const char *end = nk_str_get_const(&edit->string) + nk_str_len_char(&edit->string); NK_ASSERT(select_end_ptr); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y + selection_offset_end.y - edit->scrollbar.y, selection_offset_end.x, begin, (int)(end - begin), row_height, font, background_color, text_color, nk_true); } } /* cursor */ if (edit->select_start == edit->select_end) { if (edit->cursor >= nk_str_len(&edit->string) || (cursor_ptr && *cursor_ptr == '\n')) { /* draw cursor at end of line */ struct nk_rect cursor; cursor.w = style->cursor_size; cursor.h = font->height; cursor.x = area.x + cursor_pos.x - edit->scrollbar.x; cursor.y = area.y + cursor_pos.y + row_height/2.0f - cursor.h/2.0f; cursor.y -= edit->scrollbar.y; nk_fill_rect(out, cursor, 0, cursor_color); } else { /* draw cursor inside text */ int glyph_len; struct nk_rect label; struct nk_text txt; nk_rune unicode; NK_ASSERT(cursor_ptr); glyph_len = nk_utf_decode(cursor_ptr, &unicode, 4); label.x = area.x + cursor_pos.x - edit->scrollbar.x; label.y = area.y + cursor_pos.y - edit->scrollbar.y; label.w = font->width(font->userdata, font->height, cursor_ptr, glyph_len); label.h = row_height; txt.padding = nk_vec2(0,0); txt.background = cursor_color;; txt.text = cursor_text_color; nk_fill_rect(out, label, 0, cursor_color); nk_widget_text(out, label, cursor_ptr, glyph_len, &txt, NK_TEXT_LEFT, font); } }} } else { /* not active so just draw text */ int l = nk_str_len_char(&edit->string); const char *begin = nk_str_get_const(&edit->string); const struct nk_style_item *background; struct nk_color background_color; struct nk_color text_color; nk_push_scissor(out, clip); if (*state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text_color = style->text_active; } else if (*state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text_color = style->text_hover; } else { background = &style->normal; text_color = style->text_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) background_color = nk_rgba(0,0,0,0); else background_color = background->data.color; nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, background_color, text_color, nk_false); } nk_push_scissor(out, old_clip);} return ret; } NK_API void nk_edit_focus(struct nk_context *ctx, nk_flags flags) { nk_hash hash; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; hash = win->edit.seq; win->edit.active = nk_true; win->edit.name = hash; if (flags & NK_EDIT_ALWAYS_INSERT_MODE) win->edit.mode = NK_TEXT_EDIT_MODE_INSERT; } NK_API void nk_edit_unfocus(struct nk_context *ctx) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; win->edit.active = nk_false; win->edit.name = 0; } NK_API nk_flags nk_edit_string(struct nk_context *ctx, nk_flags flags, char *memory, int *len, int max, nk_plugin_filter filter) { nk_hash hash; nk_flags state; struct nk_text_edit *edit; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(memory); NK_ASSERT(len); if (!ctx || !memory || !len) return 0; filter = (!filter) ? nk_filter_default: filter; win = ctx->current; hash = win->edit.seq; edit = &ctx->text_edit; nk_textedit_clear_state(&ctx->text_edit, (flags & NK_EDIT_MULTILINE)? NK_TEXT_EDIT_MULTI_LINE: NK_TEXT_EDIT_SINGLE_LINE, filter); if (win->edit.active && hash == win->edit.name) { if (flags & NK_EDIT_NO_CURSOR) edit->cursor = nk_utf_len(memory, *len); else edit->cursor = win->edit.cursor; if (!(flags & NK_EDIT_SELECTABLE)) { edit->select_start = win->edit.cursor; edit->select_end = win->edit.cursor; } else { edit->select_start = win->edit.sel_start; edit->select_end = win->edit.sel_end; } edit->mode = win->edit.mode; edit->scrollbar.x = (float)win->edit.scrollbar.x; edit->scrollbar.y = (float)win->edit.scrollbar.y; edit->active = nk_true; } else edit->active = nk_false; max = NK_MAX(1, max); *len = NK_MIN(*len, max-1); nk_str_init_fixed(&edit->string, memory, (nk_size)max); edit->string.buffer.allocated = (nk_size)*len; edit->string.len = nk_utf_len(memory, *len); state = nk_edit_buffer(ctx, flags, edit, filter); *len = (int)edit->string.buffer.allocated; if (edit->active) { win->edit.cursor = edit->cursor; win->edit.sel_start = edit->select_start; win->edit.sel_end = edit->select_end; win->edit.mode = edit->mode; win->edit.scrollbar.x = (nk_uint)edit->scrollbar.x; win->edit.scrollbar.y = (nk_uint)edit->scrollbar.y; } return state; } NK_API nk_flags nk_edit_buffer(struct nk_context *ctx, nk_flags flags, struct nk_text_edit *edit, nk_plugin_filter filter) { struct nk_window *win; struct nk_style *style; struct nk_input *in; enum nk_widget_layout_states state; struct nk_rect bounds; nk_flags ret_flags = 0; unsigned char prev_state; nk_hash hash; /* make sure correct values */ NK_ASSERT(ctx); NK_ASSERT(edit); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return state; in = (win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; /* check if edit is currently hot item */ hash = win->edit.seq++; if (win->edit.active && hash == win->edit.name) { if (flags & NK_EDIT_NO_CURSOR) edit->cursor = edit->string.len; if (!(flags & NK_EDIT_SELECTABLE)) { edit->select_start = edit->cursor; edit->select_end = edit->cursor; } if (flags & NK_EDIT_CLIPBOARD) edit->clip = ctx->clip; edit->active = (unsigned char)win->edit.active; } else edit->active = nk_false; edit->mode = win->edit.mode; filter = (!filter) ? nk_filter_default: filter; prev_state = (unsigned char)edit->active; in = (flags & NK_EDIT_READ_ONLY) ? 0: in; ret_flags = nk_do_edit(&ctx->last_widget_state, &win->buffer, bounds, flags, filter, edit, &style->edit, in, style->font); if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_TEXT]; if (edit->active && prev_state != edit->active) { /* current edit is now hot */ win->edit.active = nk_true; win->edit.name = hash; } else if (prev_state && !edit->active) { /* current edit is now cold */ win->edit.active = nk_false; } return ret_flags; } NK_API nk_flags nk_edit_string_zero_terminated(struct nk_context *ctx, nk_flags flags, char *buffer, int max, nk_plugin_filter filter) { nk_flags result; int len = nk_strlen(buffer); result = nk_edit_string(ctx, flags, buffer, &len, max, filter); buffer[NK_MIN(NK_MAX(max-1,0), len)] = '\0'; return result; } /* =============================================================== * * PROPERTY * * ===============================================================*/ NK_LIB void nk_drag_behavior(nk_flags *state, const struct nk_input *in, struct nk_rect drag, struct nk_property_variant *variant, float inc_per_pixel) { int left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; int left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, drag, nk_true); nk_widget_state_reset(state); if (nk_input_is_mouse_hovering_rect(in, drag)) *state = NK_WIDGET_STATE_HOVERED; if (left_mouse_down && left_mouse_click_in_cursor) { float delta, pixels; pixels = in->mouse.delta.x; delta = pixels * inc_per_pixel; switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = variant->value.i + (int)delta; variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = variant->value.f + (float)delta; variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = variant->value.d + (double)delta; variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d, variant->max_value.d); break; } *state = NK_WIDGET_STATE_ACTIVE; } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, drag)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, drag)) *state |= NK_WIDGET_STATE_LEFT; } NK_LIB void nk_property_behavior(nk_flags *ws, const struct nk_input *in, struct nk_rect property, struct nk_rect label, struct nk_rect edit, struct nk_rect empty, int *state, struct nk_property_variant *variant, float inc_per_pixel) { if (in && *state == NK_PROPERTY_DEFAULT) { if (nk_button_behavior(ws, edit, in, NK_BUTTON_DEFAULT)) *state = NK_PROPERTY_EDIT; else if (nk_input_is_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, label, nk_true)) *state = NK_PROPERTY_DRAG; else if (nk_input_is_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, empty, nk_true)) *state = NK_PROPERTY_DRAG; } if (*state == NK_PROPERTY_DRAG) { nk_drag_behavior(ws, in, property, variant, inc_per_pixel); if (!(*ws & NK_WIDGET_STATE_ACTIVED)) *state = NK_PROPERTY_DEFAULT; } } NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_style_property *style, const struct nk_rect *bounds, const struct nk_rect *label, nk_flags state, const char *name, int len, const struct nk_user_font *font) { struct nk_text text; const struct nk_style_item *background; /* select correct background and text color */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text.text = style->label_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text.text = style->label_hover; } else { background = &style->normal; text.text = style->label_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, background->data.color); } /* draw label */ text.padding = nk_vec2(0,0); nk_widget_text(out, *label, name, len, &text, NK_TEXT_CENTERED, font); } NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior) { const nk_plugin_filter filters[] = { nk_filter_decimal, nk_filter_float }; int active, old; int num_len, name_len; char string[NK_MAX_NUMBER_BUFFER]; float size; char *dst = 0; int *length; struct nk_rect left; struct nk_rect right; struct nk_rect label; struct nk_rect edit; struct nk_rect empty; /* left decrement button */ left.h = font->height/2; left.w = left.h; left.x = property.x + style->border + style->padding.x; left.y = property.y + style->border + property.h/2.0f - left.h/2; /* text label */ name_len = nk_strlen(name); size = font->width(font->userdata, font->height, name, name_len); label.x = left.x + left.w + style->padding.x; label.w = (float)size + 2 * style->padding.x; label.y = property.y + style->border + style->padding.y; label.h = property.h - (2 * style->border + 2 * style->padding.y); /* right increment button */ right.y = left.y; right.w = left.w; right.h = left.h; right.x = property.x + property.w - (right.w + style->padding.x); /* edit */ if (*state == NK_PROPERTY_EDIT) { size = font->width(font->userdata, font->height, buffer, *len); size += style->edit.cursor_size; length = len; dst = buffer; } else { switch (variant->kind) { default: break; case NK_PROPERTY_INT: nk_itoa(string, variant->value.i); num_len = nk_strlen(string); break; case NK_PROPERTY_FLOAT: NK_DTOA(string, (double)variant->value.f); num_len = nk_string_float_limit(string, NK_MAX_FLOAT_PRECISION); break; case NK_PROPERTY_DOUBLE: NK_DTOA(string, variant->value.d); num_len = nk_string_float_limit(string, NK_MAX_FLOAT_PRECISION); break; } size = font->width(font->userdata, font->height, string, num_len); dst = string; length = &num_len; } edit.w = (float)size + 2 * style->padding.x; edit.w = NK_MIN(edit.w, right.x - (label.x + label.w)); edit.x = right.x - (edit.w + style->padding.x); edit.y = property.y + style->border; edit.h = property.h - (2 * style->border); /* empty left space activator */ empty.w = edit.x - (label.x + label.w); empty.x = label.x + label.w; empty.y = property.y; empty.h = property.h; /* update property */ old = (*state == NK_PROPERTY_EDIT); nk_property_behavior(ws, in, property, label, edit, empty, state, variant, inc_per_pixel); /* draw property */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_property(out, style, &property, &label, *ws, name, name_len, font); if (style->draw_end) style->draw_end(out, style->userdata); /* execute right button */ if (nk_do_button_symbol(ws, out, left, style->sym_left, behavior, &style->dec_button, in, font)) { switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i - variant->step.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f - variant->step.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d - variant->step.d, variant->max_value.d); break; } } /* execute left button */ if (nk_do_button_symbol(ws, out, right, style->sym_right, behavior, &style->inc_button, in, font)) { switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i + variant->step.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f + variant->step.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d + variant->step.d, variant->max_value.d); break; } } if (old != NK_PROPERTY_EDIT && (*state == NK_PROPERTY_EDIT)) { /* property has been activated so setup buffer */ NK_MEMCPY(buffer, dst, (nk_size)*length); *cursor = nk_utf_len(buffer, *length); *len = *length; length = len; dst = buffer; active = 0; } else active = (*state == NK_PROPERTY_EDIT); /* execute and run text edit field */ nk_textedit_clear_state(text_edit, NK_TEXT_EDIT_SINGLE_LINE, filters[filter]); text_edit->active = (unsigned char)active; text_edit->string.len = *length; text_edit->cursor = NK_CLAMP(0, *cursor, *length); text_edit->select_start = NK_CLAMP(0,*select_begin, *length); text_edit->select_end = NK_CLAMP(0,*select_end, *length); text_edit->string.buffer.allocated = (nk_size)*length; text_edit->string.buffer.memory.size = NK_MAX_NUMBER_BUFFER; text_edit->string.buffer.memory.ptr = dst; text_edit->string.buffer.size = NK_MAX_NUMBER_BUFFER; text_edit->mode = NK_TEXT_EDIT_MODE_INSERT; nk_do_edit(ws, out, edit, NK_EDIT_FIELD|NK_EDIT_AUTO_SELECT, filters[filter], text_edit, &style->edit, (*state == NK_PROPERTY_EDIT) ? in: 0, font); *length = text_edit->string.len; *cursor = text_edit->cursor; *select_begin = text_edit->select_start; *select_end = text_edit->select_end; if (text_edit->active && nk_input_is_key_pressed(in, NK_KEY_ENTER)) text_edit->active = nk_false; if (active && !text_edit->active) { /* property is now not active so convert edit text to value*/ *state = NK_PROPERTY_DEFAULT; buffer[*len] = '\0'; switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = nk_strtoi(buffer, 0); variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: nk_string_float_limit(buffer, NK_MAX_FLOAT_PRECISION); variant->value.f = nk_strtof(buffer, 0); variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: nk_string_float_limit(buffer, NK_MAX_FLOAT_PRECISION); variant->value.d = nk_strtod(buffer, 0); variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d, variant->max_value.d); break; } } } NK_LIB struct nk_property_variant nk_property_variant_int(int value, int min_value, int max_value, int step) { struct nk_property_variant result; result.kind = NK_PROPERTY_INT; result.value.i = value; result.min_value.i = min_value; result.max_value.i = max_value; result.step.i = step; return result; } NK_LIB struct nk_property_variant nk_property_variant_float(float value, float min_value, float max_value, float step) { struct nk_property_variant result; result.kind = NK_PROPERTY_FLOAT; result.value.f = value; result.min_value.f = min_value; result.max_value.f = max_value; result.step.f = step; return result; } NK_LIB struct nk_property_variant nk_property_variant_double(double value, double min_value, double max_value, double step) { struct nk_property_variant result; result.kind = NK_PROPERTY_DOUBLE; result.value.d = value; result.min_value.d = min_value; result.max_value.d = max_value; result.step.d = step; return result; } NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter) { struct nk_window *win; struct nk_panel *layout; struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states s; int *state = 0; nk_hash hash = 0; char *buffer = 0; int *len = 0; int *cursor = 0; int *select_begin = 0; int *select_end = 0; int old_state; char dummy_buffer[NK_MAX_NUMBER_BUFFER]; int dummy_state = NK_PROPERTY_DEFAULT; int dummy_length = 0; int dummy_cursor = 0; int dummy_select_begin = 0; int dummy_select_end = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; style = &ctx->style; s = nk_widget(&bounds, ctx); if (!s) return; /* calculate hash from name */ if (name[0] == '#') { hash = nk_murmur_hash(name, (int)nk_strlen(name), win->property.seq++); name++; /* special number hash */ } else hash = nk_murmur_hash(name, (int)nk_strlen(name), 42); /* check if property is currently hot item */ if (win->property.active && hash == win->property.name) { buffer = win->property.buffer; len = &win->property.length; cursor = &win->property.cursor; state = &win->property.state; select_begin = &win->property.select_start; select_end = &win->property.select_end; } else { buffer = dummy_buffer; len = &dummy_length; cursor = &dummy_cursor; state = &dummy_state; select_begin = &dummy_select_begin; select_end = &dummy_select_end; } /* execute property widget */ old_state = *state; ctx->text_edit.clip = ctx->clip; in = ((s == NK_WIDGET_ROM && !win->property.active) || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_property(&ctx->last_widget_state, &win->buffer, bounds, name, variant, inc_per_pixel, buffer, len, state, cursor, select_begin, select_end, &style->property, filter, in, style->font, &ctx->text_edit, ctx->button_behavior); if (in && *state != NK_PROPERTY_DEFAULT && !win->property.active) { /* current property is now hot */ win->property.active = 1; NK_MEMCPY(win->property.buffer, buffer, (nk_size)*len); win->property.length = *len; win->property.cursor = *cursor; win->property.state = *state; win->property.name = hash; win->property.select_start = *select_begin; win->property.select_end = *select_end; if (*state == NK_PROPERTY_DRAG) { ctx->input.mouse.grab = nk_true; ctx->input.mouse.grabbed = nk_true; } } /* check if previously active property is now inactive */ if (*state == NK_PROPERTY_DEFAULT && old_state != NK_PROPERTY_DEFAULT) { if (old_state == NK_PROPERTY_DRAG) { ctx->input.mouse.grab = nk_false; ctx->input.mouse.grabbed = nk_false; ctx->input.mouse.ungrab = nk_true; } win->property.select_start = 0; win->property.select_end = 0; win->property.active = 0; } } NK_API void nk_property_int(struct nk_context *ctx, const char *name, int min, int *val, int max, int step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_int(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_INT); *val = variant.value.i; } NK_API void nk_property_float(struct nk_context *ctx, const char *name, float min, float *val, float max, float step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_float(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); *val = variant.value.f; } NK_API void nk_property_double(struct nk_context *ctx, const char *name, double min, double *val, double max, double step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_double(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); *val = variant.value.d; } NK_API int nk_propertyi(struct nk_context *ctx, const char *name, int min, int val, int max, int step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_int(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_INT); val = variant.value.i; return val; } NK_API float nk_propertyf(struct nk_context *ctx, const char *name, float min, float val, float max, float step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_float(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); val = variant.value.f; return val; } NK_API double nk_propertyd(struct nk_context *ctx, const char *name, double min, double val, double max, double step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_double(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); val = variant.value.d; return val; } /* ============================================================== * * CHART * * ===============================================================*/ NK_API int nk_chart_begin_colored(struct nk_context *ctx, enum nk_chart_type type, struct nk_color color, struct nk_color highlight, int count, float min_value, float max_value) { struct nk_window *win; struct nk_chart *chart; const struct nk_style *config; const struct nk_style_chart *style; const struct nk_style_item *background; struct nk_rect bounds = {0, 0, 0, 0}; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; if (!nk_widget(&bounds, ctx)) { chart = &ctx->current->layout->chart; nk_zero(chart, sizeof(*chart)); return 0; } win = ctx->current; config = &ctx->style; chart = &win->layout->chart; style = &config->chart; /* setup basic generic chart */ nk_zero(chart, sizeof(*chart)); chart->x = bounds.x + style->padding.x; chart->y = bounds.y + style->padding.y; chart->w = bounds.w - 2 * style->padding.x; chart->h = bounds.h - 2 * style->padding.y; chart->w = NK_MAX(chart->w, 2 * style->padding.x); chart->h = NK_MAX(chart->h, 2 * style->padding.y); /* add first slot into chart */ {struct nk_chart_slot *slot = &chart->slots[chart->slot++]; slot->type = type; slot->count = count; slot->color = color; slot->highlight = highlight; slot->min = NK_MIN(min_value, max_value); slot->max = NK_MAX(min_value, max_value); slot->range = slot->max - slot->min;} /* draw chart background */ background = &style->background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, bounds, &background->data.image, nk_white); } else { nk_fill_rect(&win->buffer, bounds, style->rounding, style->border_color); nk_fill_rect(&win->buffer, nk_shrink_rect(bounds, style->border), style->rounding, style->background.data.color); } return 1; } NK_API int nk_chart_begin(struct nk_context *ctx, const enum nk_chart_type type, int count, float min_value, float max_value) { return nk_chart_begin_colored(ctx, type, ctx->style.chart.color, ctx->style.chart.selected_color, count, min_value, max_value); } NK_API void nk_chart_add_slot_colored(struct nk_context *ctx, const enum nk_chart_type type, struct nk_color color, struct nk_color highlight, int count, float min_value, float max_value) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(ctx->current->layout->chart.slot < NK_CHART_MAX_SLOT); if (!ctx || !ctx->current || !ctx->current->layout) return; if (ctx->current->layout->chart.slot >= NK_CHART_MAX_SLOT) return; /* add another slot into the graph */ {struct nk_chart *chart = &ctx->current->layout->chart; struct nk_chart_slot *slot = &chart->slots[chart->slot++]; slot->type = type; slot->count = count; slot->color = color; slot->highlight = highlight; slot->min = NK_MIN(min_value, max_value); slot->max = NK_MAX(min_value, max_value); slot->range = slot->max - slot->min;} } NK_API void nk_chart_add_slot(struct nk_context *ctx, const enum nk_chart_type type, int count, float min_value, float max_value) { nk_chart_add_slot_colored(ctx, type, ctx->style.chart.color, ctx->style.chart.selected_color, count, min_value, max_value); } NK_INTERN nk_flags nk_chart_push_line(struct nk_context *ctx, struct nk_window *win, struct nk_chart *g, float value, int slot) { struct nk_panel *layout = win->layout; const struct nk_input *i = &ctx->input; struct nk_command_buffer *out = &win->buffer; nk_flags ret = 0; struct nk_vec2 cur; struct nk_rect bounds; struct nk_color color; float step; float range; float ratio; NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); step = g->w / (float)g->slots[slot].count; range = g->slots[slot].max - g->slots[slot].min; ratio = (value - g->slots[slot].min) / range; if (g->slots[slot].index == 0) { /* first data point does not have a connection */ g->slots[slot].last.x = g->x; g->slots[slot].last.y = (g->y + g->h) - ratio * (float)g->h; bounds.x = g->slots[slot].last.x - 2; bounds.y = g->slots[slot].last.y - 2; bounds.w = bounds.h = 4; color = g->slots[slot].color; if (!(layout->flags & NK_WINDOW_ROM) && NK_INBOX(i->mouse.pos.x,i->mouse.pos.y, g->slots[slot].last.x-3, g->slots[slot].last.y-3, 6, 6)){ ret = nk_input_is_mouse_hovering_rect(i, bounds) ? NK_CHART_HOVERING : 0; ret |= (i->mouse.buttons[NK_BUTTON_LEFT].down && i->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = g->slots[slot].highlight; } nk_fill_rect(out, bounds, 0, color); g->slots[slot].index += 1; return ret; } /* draw a line between the last data point and the new one */ color = g->slots[slot].color; cur.x = g->x + (float)(step * (float)g->slots[slot].index); cur.y = (g->y + g->h) - (ratio * (float)g->h); nk_stroke_line(out, g->slots[slot].last.x, g->slots[slot].last.y, cur.x, cur.y, 1.0f, color); bounds.x = cur.x - 3; bounds.y = cur.y - 3; bounds.w = bounds.h = 6; /* user selection of current data point */ if (!(layout->flags & NK_WINDOW_ROM)) { if (nk_input_is_mouse_hovering_rect(i, bounds)) { ret = NK_CHART_HOVERING; ret |= (!i->mouse.buttons[NK_BUTTON_LEFT].down && i->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = g->slots[slot].highlight; } } nk_fill_rect(out, nk_rect(cur.x - 2, cur.y - 2, 4, 4), 0, color); /* save current data point position */ g->slots[slot].last.x = cur.x; g->slots[slot].last.y = cur.y; g->slots[slot].index += 1; return ret; } NK_INTERN nk_flags nk_chart_push_column(const struct nk_context *ctx, struct nk_window *win, struct nk_chart *chart, float value, int slot) { struct nk_command_buffer *out = &win->buffer; const struct nk_input *in = &ctx->input; struct nk_panel *layout = win->layout; float ratio; nk_flags ret = 0; struct nk_color color; struct nk_rect item = {0,0,0,0}; NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); if (chart->slots[slot].index >= chart->slots[slot].count) return nk_false; if (chart->slots[slot].count) { float padding = (float)(chart->slots[slot].count-1); item.w = (chart->w - padding) / (float)(chart->slots[slot].count); } /* calculate bounds of current bar chart entry */ color = chart->slots[slot].color;; item.h = chart->h * NK_ABS((value/chart->slots[slot].range)); if (value >= 0) { ratio = (value + NK_ABS(chart->slots[slot].min)) / NK_ABS(chart->slots[slot].range); item.y = (chart->y + chart->h) - chart->h * ratio; } else { ratio = (value - chart->slots[slot].max) / chart->slots[slot].range; item.y = chart->y + (chart->h * NK_ABS(ratio)) - item.h; } item.x = chart->x + ((float)chart->slots[slot].index * item.w); item.x = item.x + ((float)chart->slots[slot].index); /* user chart bar selection */ if (!(layout->flags & NK_WINDOW_ROM) && NK_INBOX(in->mouse.pos.x,in->mouse.pos.y,item.x,item.y,item.w,item.h)) { ret = NK_CHART_HOVERING; ret |= (!in->mouse.buttons[NK_BUTTON_LEFT].down && in->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = chart->slots[slot].highlight; } nk_fill_rect(out, item, 0, color); chart->slots[slot].index += 1; return ret; } NK_API nk_flags nk_chart_push_slot(struct nk_context *ctx, float value, int slot) { nk_flags flags; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); NK_ASSERT(slot < ctx->current->layout->chart.slot); if (!ctx || !ctx->current || slot >= NK_CHART_MAX_SLOT) return nk_false; if (slot >= ctx->current->layout->chart.slot) return nk_false; win = ctx->current; if (win->layout->chart.slot < slot) return nk_false; switch (win->layout->chart.slots[slot].type) { case NK_CHART_LINES: flags = nk_chart_push_line(ctx, win, &win->layout->chart, value, slot); break; case NK_CHART_COLUMN: flags = nk_chart_push_column(ctx, win, &win->layout->chart, value, slot); break; default: case NK_CHART_MAX: flags = 0; } return flags; } NK_API nk_flags nk_chart_push(struct nk_context *ctx, float value) { return nk_chart_push_slot(ctx, value, 0); } NK_API void nk_chart_end(struct nk_context *ctx) { struct nk_window *win; struct nk_chart *chart; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; chart = &win->layout->chart; NK_MEMSET(chart, 0, sizeof(*chart)); return; } NK_API void nk_plot(struct nk_context *ctx, enum nk_chart_type type, const float *values, int count, int offset) { int i = 0; float min_value; float max_value; NK_ASSERT(ctx); NK_ASSERT(values); if (!ctx || !values || !count) return; min_value = values[offset]; max_value = values[offset]; for (i = 0; i < count; ++i) { min_value = NK_MIN(values[i + offset], min_value); max_value = NK_MAX(values[i + offset], max_value); } if (nk_chart_begin(ctx, type, count, min_value, max_value)) { for (i = 0; i < count; ++i) nk_chart_push(ctx, values[i + offset]); nk_chart_end(ctx); } } NK_API void nk_plot_function(struct nk_context *ctx, enum nk_chart_type type, void *userdata, float(*value_getter)(void* user, int index), int count, int offset) { int i = 0; float min_value; float max_value; NK_ASSERT(ctx); NK_ASSERT(value_getter); if (!ctx || !value_getter || !count) return; max_value = min_value = value_getter(userdata, offset); for (i = 0; i < count; ++i) { float value = value_getter(userdata, i + offset); min_value = NK_MIN(value, min_value); max_value = NK_MAX(value, max_value); } if (nk_chart_begin(ctx, type, count, min_value, max_value)) { for (i = 0; i < count; ++i) nk_chart_push(ctx, value_getter(userdata, i + offset)); nk_chart_end(ctx); } } /* ============================================================== * * COLOR PICKER * * ===============================================================*/ NK_LIB int nk_color_picker_behavior(nk_flags *state, const struct nk_rect *bounds, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf *color, const struct nk_input *in) { float hsva[4]; int value_changed = 0; int hsv_changed = 0; NK_ASSERT(state); NK_ASSERT(matrix); NK_ASSERT(hue_bar); NK_ASSERT(color); /* color matrix */ nk_colorf_hsva_fv(hsva, *color); if (nk_button_behavior(state, *matrix, in, NK_BUTTON_REPEATER)) { hsva[1] = NK_SATURATE((in->mouse.pos.x - matrix->x) / (matrix->w-1)); hsva[2] = 1.0f - NK_SATURATE((in->mouse.pos.y - matrix->y) / (matrix->h-1)); value_changed = hsv_changed = 1; } /* hue bar */ if (nk_button_behavior(state, *hue_bar, in, NK_BUTTON_REPEATER)) { hsva[0] = NK_SATURATE((in->mouse.pos.y - hue_bar->y) / (hue_bar->h-1)); value_changed = hsv_changed = 1; } /* alpha bar */ if (alpha_bar) { if (nk_button_behavior(state, *alpha_bar, in, NK_BUTTON_REPEATER)) { hsva[3] = 1.0f - NK_SATURATE((in->mouse.pos.y - alpha_bar->y) / (alpha_bar->h-1)); value_changed = 1; } } nk_widget_state_reset(state); if (hsv_changed) { *color = nk_hsva_colorfv(hsva); *state = NK_WIDGET_STATE_ACTIVE; } if (value_changed) { color->a = hsva[3]; *state = NK_WIDGET_STATE_ACTIVE; } /* set color picker widget state */ if (nk_input_is_mouse_hovering_rect(in, *bounds)) *state = NK_WIDGET_STATE_HOVERED; if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, *bounds)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, *bounds)) *state |= NK_WIDGET_STATE_LEFT; return value_changed; } NK_LIB void nk_draw_color_picker(struct nk_command_buffer *o, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf col) { NK_STORAGE const struct nk_color black = {0,0,0,255}; NK_STORAGE const struct nk_color white = {255, 255, 255, 255}; NK_STORAGE const struct nk_color black_trans = {0,0,0,0}; const float crosshair_size = 7.0f; struct nk_color temp; float hsva[4]; float line_y; int i; NK_ASSERT(o); NK_ASSERT(matrix); NK_ASSERT(hue_bar); /* draw hue bar */ nk_colorf_hsva_fv(hsva, col); for (i = 0; i < 6; ++i) { NK_GLOBAL const struct nk_color hue_colors[] = { {255, 0, 0, 255}, {255,255,0,255}, {0,255,0,255}, {0, 255,255,255}, {0,0,255,255}, {255, 0, 255, 255}, {255, 0, 0, 255} }; nk_fill_rect_multi_color(o, nk_rect(hue_bar->x, hue_bar->y + (float)i * (hue_bar->h/6.0f) + 0.5f, hue_bar->w, (hue_bar->h/6.0f) + 0.5f), hue_colors[i], hue_colors[i], hue_colors[i+1], hue_colors[i+1]); } line_y = (float)(int)(hue_bar->y + hsva[0] * matrix->h + 0.5f); nk_stroke_line(o, hue_bar->x-1, line_y, hue_bar->x + hue_bar->w + 2, line_y, 1, nk_rgb(255,255,255)); /* draw alpha bar */ if (alpha_bar) { float alpha = NK_SATURATE(col.a); line_y = (float)(int)(alpha_bar->y + (1.0f - alpha) * matrix->h + 0.5f); nk_fill_rect_multi_color(o, *alpha_bar, white, white, black, black); nk_stroke_line(o, alpha_bar->x-1, line_y, alpha_bar->x + alpha_bar->w + 2, line_y, 1, nk_rgb(255,255,255)); } /* draw color matrix */ temp = nk_hsv_f(hsva[0], 1.0f, 1.0f); nk_fill_rect_multi_color(o, *matrix, white, temp, temp, white); nk_fill_rect_multi_color(o, *matrix, black_trans, black_trans, black, black); /* draw cross-hair */ {struct nk_vec2 p; float S = hsva[1]; float V = hsva[2]; p.x = (float)(int)(matrix->x + S * matrix->w); p.y = (float)(int)(matrix->y + (1.0f - V) * matrix->h); nk_stroke_line(o, p.x - crosshair_size, p.y, p.x-2, p.y, 1.0f, white); nk_stroke_line(o, p.x + crosshair_size + 1, p.y, p.x+3, p.y, 1.0f, white); nk_stroke_line(o, p.x, p.y + crosshair_size + 1, p.x, p.y+3, 1.0f, white); nk_stroke_line(o, p.x, p.y - crosshair_size, p.x, p.y-2, 1.0f, white);} } NK_LIB int nk_do_color_picker(nk_flags *state, struct nk_command_buffer *out, struct nk_colorf *col, enum nk_color_format fmt, struct nk_rect bounds, struct nk_vec2 padding, const struct nk_input *in, const struct nk_user_font *font) { int ret = 0; struct nk_rect matrix; struct nk_rect hue_bar; struct nk_rect alpha_bar; float bar_w; NK_ASSERT(out); NK_ASSERT(col); NK_ASSERT(state); NK_ASSERT(font); if (!out || !col || !state || !font) return ret; bar_w = font->height; bounds.x += padding.x; bounds.y += padding.x; bounds.w -= 2 * padding.x; bounds.h -= 2 * padding.y; matrix.x = bounds.x; matrix.y = bounds.y; matrix.h = bounds.h; matrix.w = bounds.w - (3 * padding.x + 2 * bar_w); hue_bar.w = bar_w; hue_bar.y = bounds.y; hue_bar.h = matrix.h; hue_bar.x = matrix.x + matrix.w + padding.x; alpha_bar.x = hue_bar.x + hue_bar.w + padding.x; alpha_bar.y = bounds.y; alpha_bar.w = bar_w; alpha_bar.h = matrix.h; ret = nk_color_picker_behavior(state, &bounds, &matrix, &hue_bar, (fmt == NK_RGBA) ? &alpha_bar:0, col, in); nk_draw_color_picker(out, &matrix, &hue_bar, (fmt == NK_RGBA) ? &alpha_bar:0, *col); return ret; } NK_API int nk_color_pick(struct nk_context * ctx, struct nk_colorf *color, enum nk_color_format fmt) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *config; const struct nk_input *in; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(color); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !color) return 0; win = ctx->current; config = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_color_picker(&ctx->last_widget_state, &win->buffer, color, fmt, bounds, nk_vec2(0,0), in, config->font); } NK_API struct nk_colorf nk_color_picker(struct nk_context *ctx, struct nk_colorf color, enum nk_color_format fmt) { nk_color_pick(ctx, &color, fmt); return color; } /* ============================================================== * * COMBO * * ===============================================================*/ NK_INTERN int nk_combo_begin(struct nk_context *ctx, struct nk_window *win, struct nk_vec2 size, int is_clicked, struct nk_rect header) { struct nk_window *popup; int is_open = 0; int is_active = 0; struct nk_rect body; nk_hash hash; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; popup = win->popup.win; body.x = header.x; body.w = size.x; body.y = header.y + header.h-ctx->style.window.combo_border; body.h = size.y; hash = win->popup.combo_count++; is_open = (popup) ? nk_true:nk_false; is_active = (popup && (win->popup.name == hash) && win->popup.type == NK_PANEL_COMBO); if ((is_clicked && is_open && !is_active) || (is_open && !is_active) || (!is_open && !is_active && !is_clicked)) return 0; if (!nk_nonblock_begin(ctx, 0, body, (is_clicked && is_open)?nk_rect(0,0,0,0):header, NK_PANEL_COMBO)) return 0; win->popup.type = NK_PANEL_COMBO; win->popup.name = hash; return 1; } NK_API int nk_combo_begin_text(struct nk_context *ctx, const char *selected, int len, struct nk_vec2 size) { const struct nk_input *in; struct nk_window *win; struct nk_style *style; enum nk_widget_layout_states s; int is_clicked = nk_false; struct nk_rect header; const struct nk_style_item *background; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(selected); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !selected) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { /* print currently selected text item */ struct nk_rect label; struct nk_rect button; struct nk_rect content; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw selected label */ text.padding = nk_vec2(0,0); label.x = header.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = button.x - (style->combo.content_padding.x + style->combo.spacing.x) - label.x;; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, ctx->style.font); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_label(struct nk_context *ctx, const char *selected, struct nk_vec2 size) { return nk_combo_begin_text(ctx, selected, nk_strlen(selected), size); } NK_API int nk_combo_begin_color(struct nk_context *ctx, struct nk_color color, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) background = &style->combo.active; else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) background = &style->combo.hover; else background = &style->combo.normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, header, &background->data.image,nk_white); } else { nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect bounds; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw color */ bounds.h = header.h - 4 * style->combo.content_padding.y; bounds.y = header.y + 2 * style->combo.content_padding.y; bounds.x = header.x + 2 * style->combo.content_padding.x; bounds.w = (button.x - (style->combo.content_padding.x + style->combo.spacing.x)) - bounds.x; nk_fill_rect(&win->buffer, bounds, 0, color); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol(struct nk_context *ctx, enum nk_symbol_type symbol, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_color sym_background; struct nk_color symbol_color; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; symbol_color = style->combo.symbol_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; symbol_color = style->combo.symbol_hover; } else { background = &style->combo.normal; symbol_color = style->combo.symbol_hover; } if (background->type == NK_STYLE_ITEM_IMAGE) { sym_background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { sym_background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect bounds = {0,0,0,0}; struct nk_rect content; struct nk_rect button; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.y; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw symbol */ bounds.h = header.h - 2 * style->combo.content_padding.y; bounds.y = header.y + style->combo.content_padding.y; bounds.x = header.x + style->combo.content_padding.x; bounds.w = (button.x - style->combo.content_padding.y) - bounds.x; nk_draw_symbol(&win->buffer, symbol, bounds, sym_background, symbol_color, 1.0f, style->font); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol_text(struct nk_context *ctx, const char *selected, int len, enum nk_symbol_type symbol, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_color symbol_color; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (!s) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; symbol_color = style->combo.symbol_active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; symbol_color = style->combo.symbol_hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; symbol_color = style->combo.symbol_normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect label; struct nk_rect image; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); /* draw symbol */ image.x = header.x + style->combo.content_padding.x; image.y = header.y + style->combo.content_padding.y; image.h = header.h - 2 * style->combo.content_padding.y; image.w = image.h; nk_draw_symbol(&win->buffer, symbol, image, text.background, symbol_color, 1.0f, style->font); /* draw label */ text.padding = nk_vec2(0,0); label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = (button.x - style->combo.content_padding.x) - label.x; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_image(struct nk_context *ctx, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) background = &style->combo.active; else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) background = &style->combo.hover; else background = &style->combo.normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect bounds = {0,0,0,0}; struct nk_rect content; struct nk_rect button; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.y; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw image */ bounds.h = header.h - 2 * style->combo.content_padding.y; bounds.y = header.y + style->combo.content_padding.y; bounds.x = header.x + style->combo.content_padding.x; bounds.w = (button.x - style->combo.content_padding.y) - bounds.x; nk_draw_image(&win->buffer, bounds, &img, nk_white); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_image_text(struct nk_context *ctx, const char *selected, int len, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (!s) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect label; struct nk_rect image; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); /* draw image */ image.x = header.x + style->combo.content_padding.x; image.y = header.y + style->combo.content_padding.y; image.h = header.h - 2 * style->combo.content_padding.y; image.w = image.h; nk_draw_image(&win->buffer, image, &img, nk_white); /* draw label */ text.padding = nk_vec2(0,0); label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = (button.x - style->combo.content_padding.x) - label.x; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol_label(struct nk_context *ctx, const char *selected, enum nk_symbol_type type, struct nk_vec2 size) { return nk_combo_begin_symbol_text(ctx, selected, nk_strlen(selected), type, size); } NK_API int nk_combo_begin_image_label(struct nk_context *ctx, const char *selected, struct nk_image img, struct nk_vec2 size) { return nk_combo_begin_image_text(ctx, selected, nk_strlen(selected), img, size); } NK_API int nk_combo_item_text(struct nk_context *ctx, const char *text, int len,nk_flags align) { return nk_contextual_item_text(ctx, text, len, align); } NK_API int nk_combo_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_label(ctx, label, align); } NK_API int nk_combo_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags alignment) { return nk_contextual_item_image_text(ctx, img, text, len, alignment); } NK_API int nk_combo_item_image_label(struct nk_context *ctx, struct nk_image img, const char *text, nk_flags alignment) { return nk_contextual_item_image_label(ctx, img, text, alignment); } NK_API int nk_combo_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *text, int len, nk_flags alignment) { return nk_contextual_item_symbol_text(ctx, sym, text, len, alignment); } NK_API int nk_combo_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *label, nk_flags alignment) { return nk_contextual_item_symbol_label(ctx, sym, label, alignment); } NK_API void nk_combo_end(struct nk_context *ctx) { nk_contextual_end(ctx); } NK_API void nk_combo_close(struct nk_context *ctx) { nk_contextual_close(ctx); } NK_API int nk_combo(struct nk_context *ctx, const char **items, int count, int selected, int item_height, struct nk_vec2 size) { int i = 0; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; NK_ASSERT(ctx); NK_ASSERT(items); NK_ASSERT(ctx->current); if (!ctx || !items ||!count) return selected; item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); if (nk_combo_begin_label(ctx, items[selected], size)) { nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { if (nk_combo_item_label(ctx, items[i], NK_TEXT_LEFT)) selected = i; } nk_combo_end(ctx); } return selected; } NK_API int nk_combo_separator(struct nk_context *ctx, const char *items_separated_by_separator, int separator, int selected, int count, int item_height, struct nk_vec2 size) { int i; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; const char *current_item; const char *iter; int length = 0; NK_ASSERT(ctx); NK_ASSERT(items_separated_by_separator); if (!ctx || !items_separated_by_separator) return selected; /* calculate popup window */ item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); /* find selected item */ current_item = items_separated_by_separator; for (i = 0; i < count; ++i) { iter = current_item; while (*iter && *iter != separator) iter++; length = (int)(iter - current_item); if (i == selected) break; current_item = iter + 1; } if (nk_combo_begin_text(ctx, current_item, length, size)) { current_item = items_separated_by_separator; nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { iter = current_item; while (*iter && *iter != separator) iter++; length = (int)(iter - current_item); if (nk_combo_item_text(ctx, current_item, length, NK_TEXT_LEFT)) selected = i; current_item = current_item + length + 1; } nk_combo_end(ctx); } return selected; } NK_API int nk_combo_string(struct nk_context *ctx, const char *items_separated_by_zeros, int selected, int count, int item_height, struct nk_vec2 size) { return nk_combo_separator(ctx, items_separated_by_zeros, '\0', selected, count, item_height, size); } NK_API int nk_combo_callback(struct nk_context *ctx, void(*item_getter)(void*, int, const char**), void *userdata, int selected, int count, int item_height, struct nk_vec2 size) { int i; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; const char *item; NK_ASSERT(ctx); NK_ASSERT(item_getter); if (!ctx || !item_getter) return selected; /* calculate popup window */ item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); item_getter(userdata, selected, &item); if (nk_combo_begin_label(ctx, item, size)) { nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { item_getter(userdata, i, &item); if (nk_combo_item_label(ctx, item, NK_TEXT_LEFT)) selected = i; } nk_combo_end(ctx); } return selected; } NK_API void nk_combobox(struct nk_context *ctx, const char **items, int count, int *selected, int item_height, struct nk_vec2 size) { *selected = nk_combo(ctx, items, count, *selected, item_height, size); } NK_API void nk_combobox_string(struct nk_context *ctx, const char *items_separated_by_zeros, int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_string(ctx, items_separated_by_zeros, *selected, count, item_height, size); } NK_API void nk_combobox_separator(struct nk_context *ctx, const char *items_separated_by_separator, int separator,int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_separator(ctx, items_separated_by_separator, separator, *selected, count, item_height, size); } NK_API void nk_combobox_callback(struct nk_context *ctx, void(*item_getter)(void* data, int id, const char **out_text), void *userdata, int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_callback(ctx, item_getter, userdata, *selected, count, item_height, size); } /* =============================================================== * * TOOLTIP * * ===============================================================*/ NK_API int nk_tooltip_begin(struct nk_context *ctx, float width) { int x,y,w,h; struct nk_window *win; const struct nk_input *in; struct nk_rect bounds; int ret; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* make sure that no nonblocking popup is currently active */ win = ctx->current; in = &ctx->input; if (win->popup.win && (win->popup.type & NK_PANEL_SET_NONBLOCK)) return 0; w = nk_iceilf(width); h = nk_iceilf(nk_null_rect.h); x = nk_ifloorf(in->mouse.pos.x + 1) - (int)win->layout->clip.x; y = nk_ifloorf(in->mouse.pos.y + 1) - (int)win->layout->clip.y; bounds.x = (float)x; bounds.y = (float)y; bounds.w = (float)w; bounds.h = (float)h; ret = nk_popup_begin(ctx, NK_POPUP_DYNAMIC, "__##Tooltip##__", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER, bounds); if (ret) win->layout->flags &= ~(nk_flags)NK_WINDOW_ROM; win->popup.type = NK_PANEL_TOOLTIP; ctx->current->layout->type = NK_PANEL_TOOLTIP; return ret; } NK_API void nk_tooltip_end(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; ctx->current->seq--; nk_popup_close(ctx); nk_popup_end(ctx); } NK_API void nk_tooltip(struct nk_context *ctx, const char *text) { const struct nk_style *style; struct nk_vec2 padding; int text_len; float text_width; float text_height; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(text); if (!ctx || !ctx->current || !ctx->current->layout || !text) return; /* fetch configuration data */ style = &ctx->style; padding = style->window.padding; /* calculate size of the text and tooltip */ text_len = nk_strlen(text); text_width = style->font->width(style->font->userdata, style->font->height, text, text_len); text_width += (4 * padding.x); text_height = (style->font->height + 2 * padding.y); /* execute tooltip and fill with text */ if (nk_tooltip_begin(ctx, (float)text_width)) { nk_layout_row_dynamic(ctx, (float)text_height, 1); nk_text(ctx, text, text_len, NK_TEXT_LEFT); nk_tooltip_end(ctx); } } #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_tooltipf(struct nk_context *ctx, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_tooltipfv(ctx, fmt, args); va_end(args); } NK_API void nk_tooltipfv(struct nk_context *ctx, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_tooltip(ctx, buf); } #endif #endif /* NK_IMPLEMENTATION */ /* /// ## License /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none /// ------------------------------------------------------------------------------ /// This software is available under 2 licenses -- choose whichever you prefer. /// ------------------------------------------------------------------------------ /// ALTERNATIVE A - MIT License /// Copyright (c) 2016-2018 Micha Mettke /// Permission is hereby granted, free of charge, to any person obtaining a copy of /// this software and associated documentation files (the "Software"), to deal in /// the Software without restriction, including without limitation the rights to /// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies /// of the Software, and to permit persons to whom the Software is furnished to do /// so, subject to the following conditions: /// The above copyright notice and this permission notice shall be included in all /// copies or substantial portions of the Software. /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE /// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER /// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE /// SOFTWARE. /// ------------------------------------------------------------------------------ /// ALTERNATIVE B - Public Domain (www.unlicense.org) /// This is free and unencumbered software released into the public domain. /// Anyone is free to copy, modify, publish, use, compile, sell, or distribute this /// software, either in source code form or as a compiled binary, for any purpose, /// commercial or non-commercial, and by any means. /// In jurisdictions that recognize copyright laws, the author or authors of this /// software dedicate any and all copyright interest in the software to the public /// domain. We make this dedication for the benefit of the public at large and to /// the detriment of our heirs and successors. We intend this dedication to be an /// overt act of relinquishment in perpetuity of all present and future rights to /// this software under copyright law. /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE /// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN /// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION /// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. /// ------------------------------------------------------------------------------ /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// ## Changelog /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none /// [date][x.yy.zz]-[description] /// -[date]: date on which the change has been pushed /// -[x.yy.zz]: Numerical version string representation. Each version number on the right /// resets back to zero if version on the left is incremented. /// - [x]: Major version with API and library breaking changes /// - [yy]: Minor version with non-breaking API and library changes /// - [zz]: Bug fix version with no direct changes to API /// /// - 2019/09/20 (4.01.3) - Fixed a bug wherein combobox cannot be closed by clicking the header /// when NK_BUTTON_TRIGGER_ON_RELEASE is defined. /// - 2019/09/10 (4.01.2) - Fixed the nk_cos function, which deviated significantly. /// - 2019/09/08 (4.01.1) - Fixed a bug wherein re-baking of fonts caused a segmentation /// fault due to dst_font->glyph_count not being zeroed on subsequent /// bakes of the same set of fonts. /// - 2019/06/23 (4.01.0) - Added nk_***_get_scroll and nk_***_set_scroll for groups, windows, and popups. /// - 2019/06/12 (4.00.3) - Fix panel background drawing bug. /// - 2018/10/31 (4.00.2) - Added NK_KEYSTATE_BASED_INPUT to "fix" state based backends /// like GLFW without breaking key repeat behavior on event based. /// - 2018/04/01 (4.00.1) - Fixed calling `nk_convert` multiple time per single frame. /// - 2018/04/01 (4.00.0) - BREAKING CHANGE: nk_draw_list_clear no longer tries to /// clear provided buffers. So make sure to either free /// or clear each passed buffer after calling nk_convert. /// - 2018/02/23 (3.00.6) - Fixed slider dragging behavior. /// - 2018/01/31 (3.00.5) - Fixed overcalculation of cursor data in font baking process. /// - 2018/01/31 (3.00.4) - Removed name collision with stb_truetype. /// - 2018/01/28 (3.00.3) - Fixed panel window border drawing bug. /// - 2018/01/12 (3.00.2) - Added `nk_group_begin_titled` for separed group identifier and title. /// - 2018/01/07 (3.00.1) - Started to change documentation style. /// - 2018/01/05 (3.00.0) - BREAKING CHANGE: The previous color picker API was broken /// because of conversions between float and byte color representation. /// Color pickers now use floating point values to represent /// HSV values. To get back the old behavior I added some additional /// color conversion functions to cast between nk_color and /// nk_colorf. /// - 2017/12/23 (2.00.7) - Fixed small warning. /// - 2017/12/23 (2.00.7) - Fixed `nk_edit_buffer` behavior if activated to allow input. /// - 2017/12/23 (2.00.7) - Fixed modifyable progressbar dragging visuals and input behavior. /// - 2017/12/04 (2.00.6) - Added formated string tooltip widget. /// - 2017/11/18 (2.00.5) - Fixed window becoming hidden with flag `NK_WINDOW_NO_INPUT`. /// - 2017/11/15 (2.00.4) - Fixed font merging. /// - 2017/11/07 (2.00.3) - Fixed window size and position modifier functions. /// - 2017/09/14 (2.00.2) - Fixed `nk_edit_buffer` and `nk_edit_focus` behavior. /// - 2017/09/14 (2.00.1) - Fixed window closing behavior. /// - 2017/09/14 (2.00.0) - BREAKING CHANGE: Modifing window position and size funtions now /// require the name of the window and must happen outside the window /// building process (between function call nk_begin and nk_end). /// - 2017/09/11 (1.40.9) - Fixed window background flag if background window is declared last. /// - 2017/08/27 (1.40.8) - Fixed `nk_item_is_any_active` for hidden windows. /// - 2017/08/27 (1.40.7) - Fixed window background flag. /// - 2017/07/07 (1.40.6) - Fixed missing clipping rect check for hovering/clicked /// query for widgets. /// - 2017/07/07 (1.40.5) - Fixed drawing bug for vertex output for lines and stroked /// and filled rectangles. /// - 2017/07/07 (1.40.4) - Fixed bug in nk_convert trying to add windows that are in /// process of being destroyed. /// - 2017/07/07 (1.40.3) - Fixed table internal bug caused by storing table size in /// window instead of directly in table. /// - 2017/06/30 (1.40.2) - Removed unneeded semicolon in C++ NK_ALIGNOF macro. /// - 2017/06/30 (1.40.1) - Fixed drawing lines smaller or equal zero. /// - 2017/06/08 (1.40.0) - Removed the breaking part of last commit. Auto layout now only /// comes in effect if you pass in zero was row height argument. /// - 2017/06/08 (1.40.0) - BREAKING CHANGE: while not directly API breaking it will change /// how layouting works. From now there will be an internal minimum /// row height derived from font height. If you need a row smaller than /// that you can directly set it by `nk_layout_set_min_row_height` and /// reset the value back by calling `nk_layout_reset_min_row_height. /// - 2017/06/08 (1.39.1) - Fixed property text edit handling bug caused by past `nk_widget` fix. /// - 2017/06/08 (1.39.0) - Added function to retrieve window space without calling a `nk_layout_xxx` function. /// - 2017/06/06 (1.38.5) - Fixed `nk_convert` return flag for command buffer. /// - 2017/05/23 (1.38.4) - Fixed activation behavior for widgets partially clipped. /// - 2017/05/10 (1.38.3) - Fixed wrong min window size mouse scaling over boundries. /// - 2017/05/09 (1.38.2) - Fixed vertical scrollbar drawing with not enough space. /// - 2017/05/09 (1.38.1) - Fixed scaler dragging behavior if window size hits minimum size. /// - 2017/05/06 (1.38.0) - Added platform double-click support. /// - 2017/04/20 (1.37.1) - Fixed key repeat found inside glfw demo backends. /// - 2017/04/20 (1.37.0) - Extended properties with selection and clipboard support. /// - 2017/04/20 (1.36.2) - Fixed #405 overlapping rows with zero padding and spacing. /// - 2017/04/09 (1.36.1) - Fixed #403 with another widget float error. /// - 2017/04/09 (1.36.0) - Added window `NK_WINDOW_NO_INPUT` and `NK_WINDOW_NOT_INTERACTIVE` flags. /// - 2017/04/09 (1.35.3) - Fixed buffer heap corruption. /// - 2017/03/25 (1.35.2) - Fixed popup overlapping for `NK_WINDOW_BACKGROUND` windows. /// - 2017/03/25 (1.35.1) - Fixed windows closing behavior. /// - 2017/03/18 (1.35.0) - Added horizontal scroll requested in #377. /// - 2017/03/18 (1.34.3) - Fixed long window header titles. /// - 2017/03/04 (1.34.2) - Fixed text edit filtering. /// - 2017/03/04 (1.34.1) - Fixed group closable flag. /// - 2017/02/25 (1.34.0) - Added custom draw command for better language binding support. /// - 2017/01/24 (1.33.0) - Added programatic way of remove edit focus. /// - 2017/01/24 (1.32.3) - Fixed wrong define for basic type definitions for windows. /// - 2017/01/21 (1.32.2) - Fixed input capture from hidden or closed windows. /// - 2017/01/21 (1.32.1) - Fixed slider behavior and drawing. /// - 2017/01/13 (1.32.0) - Added flag to put scaler into the bottom left corner. /// - 2017/01/13 (1.31.0) - Added additional row layouting method to combine both /// dynamic and static widgets. /// - 2016/12/31 (1.30.0) - Extended scrollbar offset from 16-bit to 32-bit. /// - 2016/12/31 (1.29.2) - Fixed closing window bug of minimized windows. /// - 2016/12/03 (1.29.1) - Fixed wrapped text with no seperator and C89 error. /// - 2016/12/03 (1.29.0) - Changed text wrapping to process words not characters. /// - 2016/11/22 (1.28.6) - Fixed window minimized closing bug. /// - 2016/11/19 (1.28.5) - Fixed abstract combo box closing behavior. /// - 2016/11/19 (1.28.4) - Fixed tooltip flickering. /// - 2016/11/19 (1.28.3) - Fixed memory leak caused by popup repeated closing. /// - 2016/11/18 (1.28.2) - Fixed memory leak caused by popup panel allocation. /// - 2016/11/10 (1.28.1) - Fixed some warnings and C++ error. /// - 2016/11/10 (1.28.0) - Added additional `nk_button` versions which allows to directly /// pass in a style struct to change buttons visual. /// - 2016/11/10 (1.27.0) - Added additional `nk_tree` versions to support external state /// storage. Just like last the `nk_group` commit the main /// advantage is that you optionally can minimize nuklears runtime /// memory consumption or handle hash collisions. /// - 2016/11/09 (1.26.0) - Added additional `nk_group` version to support external scrollbar /// offset storage. Main advantage is that you can externalize /// the memory management for the offset. It could also be helpful /// if you have a hash collision in `nk_group_begin` but really /// want the name. In addition I added `nk_list_view` which allows /// to draw big lists inside a group without actually having to /// commit the whole list to nuklear (issue #269). /// - 2016/10/30 (1.25.1) - Fixed clipping rectangle bug inside `nk_draw_list`. /// - 2016/10/29 (1.25.0) - Pulled `nk_panel` memory management into nuklear and out of /// the hands of the user. From now on users don't have to care /// about panels unless they care about some information. If you /// still need the panel just call `nk_window_get_panel`. /// - 2016/10/21 (1.24.0) - Changed widget border drawing to stroked rectangle from filled /// rectangle for less overdraw and widget background transparency. /// - 2016/10/18 (1.23.0) - Added `nk_edit_focus` for manually edit widget focus control. /// - 2016/09/29 (1.22.7) - Fixed deduction of basic type in non `` compilation. /// - 2016/09/29 (1.22.6) - Fixed edit widget UTF-8 text cursor drawing bug. /// - 2016/09/28 (1.22.5) - Fixed edit widget UTF-8 text appending/inserting/removing. /// - 2016/09/28 (1.22.4) - Fixed drawing bug inside edit widgets which offset all text /// text in every edit widget if one of them is scrolled. /// - 2016/09/28 (1.22.3) - Fixed small bug in edit widgets if not active. The wrong /// text length is passed. It should have been in bytes but /// was passed as glyphes. /// - 2016/09/20 (1.22.2) - Fixed color button size calculation. /// - 2016/09/20 (1.22.1) - Fixed some `nk_vsnprintf` behavior bugs and removed `` /// again from `NK_INCLUDE_STANDARD_VARARGS`. /// - 2016/09/18 (1.22.0) - C89 does not support vsnprintf only C99 and newer as well /// as C++11 and newer. In addition to use vsnprintf you have /// to include . So just defining `NK_INCLUDE_STD_VAR_ARGS` /// is not enough. That behavior is now fixed. By default if /// both varargs as well as stdio is selected I try to use /// vsnprintf if not possible I will revert to vsprintf. If /// varargs but not stdio was defined I will use my own function. /// - 2016/09/15 (1.21.2) - Fixed panel `close` behavior for deeper panel levels. /// - 2016/09/15 (1.21.1) - Fixed C++ errors and wrong argument to `nk_panel_get_xxxx`. /// - 2016/09/13 (1.21.0) - !BREAKING! Fixed nonblocking popup behavior in menu, combo, /// and contextual which prevented closing in y-direction if /// popup did not reach max height. /// In addition the height parameter was changed into vec2 /// for width and height to have more control over the popup size. /// - 2016/09/13 (1.20.3) - Cleaned up and extended type selection. /// - 2016/09/13 (1.20.2) - Fixed slider behavior hopefully for the last time. This time /// all calculation are correct so no more hackery. /// - 2016/09/13 (1.20.1) - Internal change to divide window/panel flags into panel flags and types. /// Suprisinly spend years in C and still happened to confuse types /// with flags. Probably something to take note. /// - 2016/09/08 (1.20.0) - Added additional helper function to make it easier to just /// take the produced buffers from `nk_convert` and unplug the /// iteration process from `nk_context`. So now you can /// just use the vertex,element and command buffer + two pointer /// inside the command buffer retrieved by calls `nk__draw_begin` /// and `nk__draw_end` and macro `nk_draw_foreach_bounded`. /// - 2016/09/08 (1.19.0) - Added additional asserts to make sure every `nk_xxx_begin` call /// for windows, popups, combobox, menu and contextual is guarded by /// `if` condition and does not produce false drawing output. /// - 2016/09/08 (1.18.0) - Changed confusing name for `NK_SYMBOL_RECT_FILLED`, `NK_SYMBOL_RECT` /// to hopefully easier to understand `NK_SYMBOL_RECT_FILLED` and /// `NK_SYMBOL_RECT_OUTLINE`. /// - 2016/09/08 (1.17.0) - Changed confusing name for `NK_SYMBOL_CIRLCE_FILLED`, `NK_SYMBOL_CIRCLE` /// to hopefully easier to understand `NK_SYMBOL_CIRCLE_FILLED` and /// `NK_SYMBOL_CIRCLE_OUTLINE`. /// - 2016/09/08 (1.16.0) - Added additional checks to select correct types if `NK_INCLUDE_FIXED_TYPES` /// is not defined by supporting the biggest compiler GCC, clang and MSVC. /// - 2016/09/07 (1.15.3) - Fixed `NK_INCLUDE_COMMAND_USERDATA` define to not cause an error. /// - 2016/09/04 (1.15.2) - Fixed wrong combobox height calculation. /// - 2016/09/03 (1.15.1) - Fixed gaps inside combo boxes in OpenGL. /// - 2016/09/02 (1.15.0) - Changed nuklear to not have any default vertex layout and /// instead made it user provided. The range of types to convert /// to is quite limited at the moment, but I would be more than /// happy to accept PRs to add additional. /// - 2016/08/30 (1.14.2) - Removed unused variables. /// - 2016/08/30 (1.14.1) - Fixed C++ build errors. /// - 2016/08/30 (1.14.0) - Removed mouse dragging from SDL demo since it does not work correctly. /// - 2016/08/30 (1.13.4) - Tweaked some default styling variables. /// - 2016/08/30 (1.13.3) - Hopefully fixed drawing bug in slider, in general I would /// refrain from using slider with a big number of steps. /// - 2016/08/30 (1.13.2) - Fixed close and minimize button which would fire even if the /// window was in Read Only Mode. /// - 2016/08/30 (1.13.1) - Fixed popup panel padding handling which was previously just /// a hack for combo box and menu. /// - 2016/08/30 (1.13.0) - Removed `NK_WINDOW_DYNAMIC` flag from public API since /// it is bugged and causes issues in window selection. /// - 2016/08/30 (1.12.0) - Removed scaler size. The size of the scaler is now /// determined by the scrollbar size. /// - 2016/08/30 (1.11.2) - Fixed some drawing bugs caused by changes from 1.11.0. /// - 2016/08/30 (1.11.1) - Fixed overlapping minimized window selection. /// - 2016/08/30 (1.11.0) - Removed some internal complexity and overly complex code /// handling panel padding and panel border. /// - 2016/08/29 (1.10.0) - Added additional height parameter to `nk_combobox_xxx`. /// - 2016/08/29 (1.10.0) - Fixed drawing bug in dynamic popups. /// - 2016/08/29 (1.10.0) - Added experimental mouse scrolling to popups, menus and comboboxes. /// - 2016/08/26 (1.10.0) - Added window name string prepresentation to account for /// hash collisions. Currently limited to `NK_WINDOW_MAX_NAME` /// which in term can be redefined if not big enough. /// - 2016/08/26 (1.10.0) - Added stacks for temporary style/UI changes in code. /// - 2016/08/25 (1.10.0) - Changed `nk_input_is_key_pressed` and 'nk_input_is_key_released' /// to account for key press and release happening in one frame. /// - 2016/08/25 (1.10.0) - Added additional nk_edit flag to directly jump to the end on activate. /// - 2016/08/17 (1.09.6) - Removed invalid check for value zero in `nk_propertyx`. /// - 2016/08/16 (1.09.5) - Fixed ROM mode for deeper levels of popup windows parents. /// - 2016/08/15 (1.09.4) - Editbox are now still active if enter was pressed with flag /// `NK_EDIT_SIG_ENTER`. Main reasoning is to be able to keep /// typing after commiting. /// - 2016/08/15 (1.09.4) - Removed redundant code. /// - 2016/08/15 (1.09.4) - Fixed negative numbers in `nk_strtoi` and remove unused variable. /// - 2016/08/15 (1.09.3) - Fixed `NK_WINDOW_BACKGROUND` flag behavior to select a background /// window only as selected by hovering and not by clicking. /// - 2016/08/14 (1.09.2) - Fixed a bug in font atlas which caused wrong loading /// of glyphes for font with multiple ranges. /// - 2016/08/12 (1.09.1) - Added additional function to check if window is currently /// hidden and therefore not visible. /// - 2016/08/12 (1.09.1) - nk_window_is_closed now queries the correct flag `NK_WINDOW_CLOSED` /// instead of the old flag `NK_WINDOW_HIDDEN`. /// - 2016/08/09 (1.09.0) - Added additional double version to nk_property and changed /// the underlying implementation to not cast to float and instead /// work directly on the given values. /// - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal /// floating pointer number to string conversion for additional /// precision. /// - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal /// string to floating point number conversion for additional /// precision. /// - 2016/08/08 (1.07.2) - Fixed compiling error without define `NK_INCLUDE_FIXED_TYPE`. /// - 2016/08/08 (1.07.1) - Fixed possible floating point error inside `nk_widget` leading /// to wrong wiget width calculation which results in widgets falsly /// becomming tagged as not inside window and cannot be accessed. /// - 2016/08/08 (1.07.0) - Nuklear now differentiates between hiding a window (NK_WINDOW_HIDDEN) and /// closing a window (NK_WINDOW_CLOSED). A window can be hidden/shown /// by using `nk_window_show` and closed by either clicking the close /// icon in a window or by calling `nk_window_close`. Only closed /// windows get removed at the end of the frame while hidden windows /// remain. /// - 2016/08/08 (1.06.0) - Added `nk_edit_string_zero_terminated` as a second option to /// `nk_edit_string` which takes, edits and outputs a '\0' terminated string. /// - 2016/08/08 (1.05.4) - Fixed scrollbar auto hiding behavior. /// - 2016/08/08 (1.05.3) - Fixed wrong panel padding selection in `nk_layout_widget_space`. /// - 2016/08/07 (1.05.2) - Fixed old bug in dynamic immediate mode layout API, calculating /// wrong item spacing and panel width. /// - 2016/08/07 (1.05.1) - Hopefully finally fixed combobox popup drawing bug. /// - 2016/08/07 (1.05.0) - Split varargs away from `NK_INCLUDE_STANDARD_IO` into own /// define `NK_INCLUDE_STANDARD_VARARGS` to allow more fine /// grained controlled over library includes. /// - 2016/08/06 (1.04.5) - Changed memset calls to `NK_MEMSET`. /// - 2016/08/04 (1.04.4) - Fixed fast window scaling behavior. /// - 2016/08/04 (1.04.3) - Fixed window scaling, movement bug which appears if you /// move/scale a window and another window is behind it. /// If you are fast enough then the window behind gets activated /// and the operation is blocked. I now require activating /// by hovering only if mouse is not pressed. /// - 2016/08/04 (1.04.2) - Fixed changing fonts. /// - 2016/08/03 (1.04.1) - Fixed `NK_WINDOW_BACKGROUND` behavior. /// - 2016/08/03 (1.04.0) - Added color parameter to `nk_draw_image`. /// - 2016/08/03 (1.04.0) - Added additional window padding style attributes for /// sub windows (combo, menu, ...). /// - 2016/08/03 (1.04.0) - Added functions to show/hide software cursor. /// - 2016/08/03 (1.04.0) - Added `NK_WINDOW_BACKGROUND` flag to force a window /// to be always in the background of the screen. /// - 2016/08/03 (1.03.2) - Removed invalid assert macro for NK_RGB color picker. /// - 2016/08/01 (1.03.1) - Added helper macros into header include guard. /// - 2016/07/29 (1.03.0) - Moved the window/table pool into the header part to /// simplify memory management by removing the need to /// allocate the pool. /// - 2016/07/29 (1.02.0) - Added auto scrollbar hiding window flag which if enabled /// will hide the window scrollbar after NK_SCROLLBAR_HIDING_TIMEOUT /// seconds without window interaction. To make it work /// you have to also set a delta time inside the `nk_context`. /// - 2016/07/25 (1.01.1) - Fixed small panel and panel border drawing bugs. /// - 2016/07/15 (1.01.0) - Added software cursor to `nk_style` and `nk_context`. /// - 2016/07/15 (1.01.0) - Added const correctness to `nk_buffer_push' data argument. /// - 2016/07/15 (1.01.0) - Removed internal font baking API and simplified /// font atlas memory management by converting pointer /// arrays for fonts and font configurations to lists. /// - 2016/07/15 (1.00.0) - Changed button API to use context dependend button /// behavior instead of passing it for every function call. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// ## Gallery /// ![Figure [blue]: Feature overview with blue color styling](https://cloud.githubusercontent.com/assets/8057201/13538240/acd96876-e249-11e5-9547-5ac0b19667a0.png) /// ![Figure [red]: Feature overview with red color styling](https://cloud.githubusercontent.com/assets/8057201/13538243/b04acd4c-e249-11e5-8fd2-ad7744a5b446.png) /// ![Figure [widgets]: Widget overview](https://cloud.githubusercontent.com/assets/8057201/11282359/3325e3c6-8eff-11e5-86cb-cf02b0596087.png) /// ![Figure [blackwhite]: Black and white](https://cloud.githubusercontent.com/assets/8057201/11033668/59ab5d04-86e5-11e5-8091-c56f16411565.png) /// ![Figure [filexp]: File explorer](https://cloud.githubusercontent.com/assets/8057201/10718115/02a9ba08-7b6b-11e5-950f-adacdd637739.png) /// ![Figure [opengl]: OpenGL Editor](https://cloud.githubusercontent.com/assets/8057201/12779619/2a20d72c-ca69-11e5-95fe-4edecf820d5c.png) /// ![Figure [nodedit]: Node Editor](https://cloud.githubusercontent.com/assets/8057201/9976995/e81ac04a-5ef7-11e5-872b-acd54fbeee03.gif) /// ![Figure [skinning]: Using skinning in Nuklear](https://cloud.githubusercontent.com/assets/8057201/15991632/76494854-30b8-11e6-9555-a69840d0d50b.png) /// ![Figure [bf]: Heavy modified version](https://cloud.githubusercontent.com/assets/8057201/14902576/339926a8-0d9c-11e6-9fee-a8b73af04473.png) /// /// ## Credits /// Developed by Micha Mettke and every direct or indirect github contributor.

/// /// Embeds [stb_texedit](https://github.com/nothings/stb/blob/master/stb_textedit.h), [stb_truetype](https://github.com/nothings/stb/blob/master/stb_truetype.h) and [stb_rectpack](https://github.com/nothings/stb/blob/master/stb_rect_pack.h) by Sean Barret (public domain)
/// Uses [stddoc.c](https://github.com/r-lyeh/stddoc.c) from r-lyeh@github.com for documentation generation

/// Embeds ProggyClean.ttf font by Tristan Grimmer (MIT license).
/// /// Big thank you to Omar Cornut (ocornut@github) for his [imgui library](https://github.com/ocornut/imgui) and /// giving me the inspiration for this library, Casey Muratori for handmade hero /// and his original immediate mode graphical user interface idea and Sean /// Barret for his amazing single header libraries which restored my faith /// in libraries and brought me to create some of my own. Finally Apoorva Joshi /// for his single header file packer. */ ================================================ FILE: package.json ================================================ { "name": "nuklear", "version": "4.01.3", "repo": "vurtun/nuklear", "description": "A small ANSI C gui toolkit", "keywords": ["gl", "ui", "toolkit"], "src": ["nuklear.h"] } ================================================ FILE: src/CHANGELOG ================================================ /// ## Changelog /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none /// [date][x.yy.zz]-[description] /// -[date]: date on which the change has been pushed /// -[x.yy.zz]: Numerical version string representation. Each version number on the right /// resets back to zero if version on the left is incremented. /// - [x]: Major version with API and library breaking changes /// - [yy]: Minor version with non-breaking API and library changes /// - [zz]: Bug fix version with no direct changes to API /// /// - 2019/09/20 (4.01.3) - Fixed a bug wherein combobox cannot be closed by clicking the header /// when NK_BUTTON_TRIGGER_ON_RELEASE is defined. /// - 2019/09/10 (4.01.2) - Fixed the nk_cos function, which deviated significantly. /// - 2019/09/08 (4.01.1) - Fixed a bug wherein re-baking of fonts caused a segmentation /// fault due to dst_font->glyph_count not being zeroed on subsequent /// bakes of the same set of fonts. /// - 2019/06/23 (4.01.0) - Added nk_***_get_scroll and nk_***_set_scroll for groups, windows, and popups. /// - 2019/06/12 (4.00.3) - Fix panel background drawing bug. /// - 2018/10/31 (4.00.2) - Added NK_KEYSTATE_BASED_INPUT to "fix" state based backends /// like GLFW without breaking key repeat behavior on event based. /// - 2018/04/01 (4.00.1) - Fixed calling `nk_convert` multiple time per single frame. /// - 2018/04/01 (4.00.0) - BREAKING CHANGE: nk_draw_list_clear no longer tries to /// clear provided buffers. So make sure to either free /// or clear each passed buffer after calling nk_convert. /// - 2018/02/23 (3.00.6) - Fixed slider dragging behavior. /// - 2018/01/31 (3.00.5) - Fixed overcalculation of cursor data in font baking process. /// - 2018/01/31 (3.00.4) - Removed name collision with stb_truetype. /// - 2018/01/28 (3.00.3) - Fixed panel window border drawing bug. /// - 2018/01/12 (3.00.2) - Added `nk_group_begin_titled` for separed group identifier and title. /// - 2018/01/07 (3.00.1) - Started to change documentation style. /// - 2018/01/05 (3.00.0) - BREAKING CHANGE: The previous color picker API was broken /// because of conversions between float and byte color representation. /// Color pickers now use floating point values to represent /// HSV values. To get back the old behavior I added some additional /// color conversion functions to cast between nk_color and /// nk_colorf. /// - 2017/12/23 (2.00.7) - Fixed small warning. /// - 2017/12/23 (2.00.7) - Fixed `nk_edit_buffer` behavior if activated to allow input. /// - 2017/12/23 (2.00.7) - Fixed modifyable progressbar dragging visuals and input behavior. /// - 2017/12/04 (2.00.6) - Added formated string tooltip widget. /// - 2017/11/18 (2.00.5) - Fixed window becoming hidden with flag `NK_WINDOW_NO_INPUT`. /// - 2017/11/15 (2.00.4) - Fixed font merging. /// - 2017/11/07 (2.00.3) - Fixed window size and position modifier functions. /// - 2017/09/14 (2.00.2) - Fixed `nk_edit_buffer` and `nk_edit_focus` behavior. /// - 2017/09/14 (2.00.1) - Fixed window closing behavior. /// - 2017/09/14 (2.00.0) - BREAKING CHANGE: Modifing window position and size funtions now /// require the name of the window and must happen outside the window /// building process (between function call nk_begin and nk_end). /// - 2017/09/11 (1.40.9) - Fixed window background flag if background window is declared last. /// - 2017/08/27 (1.40.8) - Fixed `nk_item_is_any_active` for hidden windows. /// - 2017/08/27 (1.40.7) - Fixed window background flag. /// - 2017/07/07 (1.40.6) - Fixed missing clipping rect check for hovering/clicked /// query for widgets. /// - 2017/07/07 (1.40.5) - Fixed drawing bug for vertex output for lines and stroked /// and filled rectangles. /// - 2017/07/07 (1.40.4) - Fixed bug in nk_convert trying to add windows that are in /// process of being destroyed. /// - 2017/07/07 (1.40.3) - Fixed table internal bug caused by storing table size in /// window instead of directly in table. /// - 2017/06/30 (1.40.2) - Removed unneeded semicolon in C++ NK_ALIGNOF macro. /// - 2017/06/30 (1.40.1) - Fixed drawing lines smaller or equal zero. /// - 2017/06/08 (1.40.0) - Removed the breaking part of last commit. Auto layout now only /// comes in effect if you pass in zero was row height argument. /// - 2017/06/08 (1.40.0) - BREAKING CHANGE: while not directly API breaking it will change /// how layouting works. From now there will be an internal minimum /// row height derived from font height. If you need a row smaller than /// that you can directly set it by `nk_layout_set_min_row_height` and /// reset the value back by calling `nk_layout_reset_min_row_height. /// - 2017/06/08 (1.39.1) - Fixed property text edit handling bug caused by past `nk_widget` fix. /// - 2017/06/08 (1.39.0) - Added function to retrieve window space without calling a `nk_layout_xxx` function. /// - 2017/06/06 (1.38.5) - Fixed `nk_convert` return flag for command buffer. /// - 2017/05/23 (1.38.4) - Fixed activation behavior for widgets partially clipped. /// - 2017/05/10 (1.38.3) - Fixed wrong min window size mouse scaling over boundries. /// - 2017/05/09 (1.38.2) - Fixed vertical scrollbar drawing with not enough space. /// - 2017/05/09 (1.38.1) - Fixed scaler dragging behavior if window size hits minimum size. /// - 2017/05/06 (1.38.0) - Added platform double-click support. /// - 2017/04/20 (1.37.1) - Fixed key repeat found inside glfw demo backends. /// - 2017/04/20 (1.37.0) - Extended properties with selection and clipboard support. /// - 2017/04/20 (1.36.2) - Fixed #405 overlapping rows with zero padding and spacing. /// - 2017/04/09 (1.36.1) - Fixed #403 with another widget float error. /// - 2017/04/09 (1.36.0) - Added window `NK_WINDOW_NO_INPUT` and `NK_WINDOW_NOT_INTERACTIVE` flags. /// - 2017/04/09 (1.35.3) - Fixed buffer heap corruption. /// - 2017/03/25 (1.35.2) - Fixed popup overlapping for `NK_WINDOW_BACKGROUND` windows. /// - 2017/03/25 (1.35.1) - Fixed windows closing behavior. /// - 2017/03/18 (1.35.0) - Added horizontal scroll requested in #377. /// - 2017/03/18 (1.34.3) - Fixed long window header titles. /// - 2017/03/04 (1.34.2) - Fixed text edit filtering. /// - 2017/03/04 (1.34.1) - Fixed group closable flag. /// - 2017/02/25 (1.34.0) - Added custom draw command for better language binding support. /// - 2017/01/24 (1.33.0) - Added programatic way of remove edit focus. /// - 2017/01/24 (1.32.3) - Fixed wrong define for basic type definitions for windows. /// - 2017/01/21 (1.32.2) - Fixed input capture from hidden or closed windows. /// - 2017/01/21 (1.32.1) - Fixed slider behavior and drawing. /// - 2017/01/13 (1.32.0) - Added flag to put scaler into the bottom left corner. /// - 2017/01/13 (1.31.0) - Added additional row layouting method to combine both /// dynamic and static widgets. /// - 2016/12/31 (1.30.0) - Extended scrollbar offset from 16-bit to 32-bit. /// - 2016/12/31 (1.29.2) - Fixed closing window bug of minimized windows. /// - 2016/12/03 (1.29.1) - Fixed wrapped text with no seperator and C89 error. /// - 2016/12/03 (1.29.0) - Changed text wrapping to process words not characters. /// - 2016/11/22 (1.28.6) - Fixed window minimized closing bug. /// - 2016/11/19 (1.28.5) - Fixed abstract combo box closing behavior. /// - 2016/11/19 (1.28.4) - Fixed tooltip flickering. /// - 2016/11/19 (1.28.3) - Fixed memory leak caused by popup repeated closing. /// - 2016/11/18 (1.28.2) - Fixed memory leak caused by popup panel allocation. /// - 2016/11/10 (1.28.1) - Fixed some warnings and C++ error. /// - 2016/11/10 (1.28.0) - Added additional `nk_button` versions which allows to directly /// pass in a style struct to change buttons visual. /// - 2016/11/10 (1.27.0) - Added additional `nk_tree` versions to support external state /// storage. Just like last the `nk_group` commit the main /// advantage is that you optionally can minimize nuklears runtime /// memory consumption or handle hash collisions. /// - 2016/11/09 (1.26.0) - Added additional `nk_group` version to support external scrollbar /// offset storage. Main advantage is that you can externalize /// the memory management for the offset. It could also be helpful /// if you have a hash collision in `nk_group_begin` but really /// want the name. In addition I added `nk_list_view` which allows /// to draw big lists inside a group without actually having to /// commit the whole list to nuklear (issue #269). /// - 2016/10/30 (1.25.1) - Fixed clipping rectangle bug inside `nk_draw_list`. /// - 2016/10/29 (1.25.0) - Pulled `nk_panel` memory management into nuklear and out of /// the hands of the user. From now on users don't have to care /// about panels unless they care about some information. If you /// still need the panel just call `nk_window_get_panel`. /// - 2016/10/21 (1.24.0) - Changed widget border drawing to stroked rectangle from filled /// rectangle for less overdraw and widget background transparency. /// - 2016/10/18 (1.23.0) - Added `nk_edit_focus` for manually edit widget focus control. /// - 2016/09/29 (1.22.7) - Fixed deduction of basic type in non `` compilation. /// - 2016/09/29 (1.22.6) - Fixed edit widget UTF-8 text cursor drawing bug. /// - 2016/09/28 (1.22.5) - Fixed edit widget UTF-8 text appending/inserting/removing. /// - 2016/09/28 (1.22.4) - Fixed drawing bug inside edit widgets which offset all text /// text in every edit widget if one of them is scrolled. /// - 2016/09/28 (1.22.3) - Fixed small bug in edit widgets if not active. The wrong /// text length is passed. It should have been in bytes but /// was passed as glyphes. /// - 2016/09/20 (1.22.2) - Fixed color button size calculation. /// - 2016/09/20 (1.22.1) - Fixed some `nk_vsnprintf` behavior bugs and removed `` /// again from `NK_INCLUDE_STANDARD_VARARGS`. /// - 2016/09/18 (1.22.0) - C89 does not support vsnprintf only C99 and newer as well /// as C++11 and newer. In addition to use vsnprintf you have /// to include . So just defining `NK_INCLUDE_STD_VAR_ARGS` /// is not enough. That behavior is now fixed. By default if /// both varargs as well as stdio is selected I try to use /// vsnprintf if not possible I will revert to vsprintf. If /// varargs but not stdio was defined I will use my own function. /// - 2016/09/15 (1.21.2) - Fixed panel `close` behavior for deeper panel levels. /// - 2016/09/15 (1.21.1) - Fixed C++ errors and wrong argument to `nk_panel_get_xxxx`. /// - 2016/09/13 (1.21.0) - !BREAKING! Fixed nonblocking popup behavior in menu, combo, /// and contextual which prevented closing in y-direction if /// popup did not reach max height. /// In addition the height parameter was changed into vec2 /// for width and height to have more control over the popup size. /// - 2016/09/13 (1.20.3) - Cleaned up and extended type selection. /// - 2016/09/13 (1.20.2) - Fixed slider behavior hopefully for the last time. This time /// all calculation are correct so no more hackery. /// - 2016/09/13 (1.20.1) - Internal change to divide window/panel flags into panel flags and types. /// Suprisinly spend years in C and still happened to confuse types /// with flags. Probably something to take note. /// - 2016/09/08 (1.20.0) - Added additional helper function to make it easier to just /// take the produced buffers from `nk_convert` and unplug the /// iteration process from `nk_context`. So now you can /// just use the vertex,element and command buffer + two pointer /// inside the command buffer retrieved by calls `nk__draw_begin` /// and `nk__draw_end` and macro `nk_draw_foreach_bounded`. /// - 2016/09/08 (1.19.0) - Added additional asserts to make sure every `nk_xxx_begin` call /// for windows, popups, combobox, menu and contextual is guarded by /// `if` condition and does not produce false drawing output. /// - 2016/09/08 (1.18.0) - Changed confusing name for `NK_SYMBOL_RECT_FILLED`, `NK_SYMBOL_RECT` /// to hopefully easier to understand `NK_SYMBOL_RECT_FILLED` and /// `NK_SYMBOL_RECT_OUTLINE`. /// - 2016/09/08 (1.17.0) - Changed confusing name for `NK_SYMBOL_CIRLCE_FILLED`, `NK_SYMBOL_CIRCLE` /// to hopefully easier to understand `NK_SYMBOL_CIRCLE_FILLED` and /// `NK_SYMBOL_CIRCLE_OUTLINE`. /// - 2016/09/08 (1.16.0) - Added additional checks to select correct types if `NK_INCLUDE_FIXED_TYPES` /// is not defined by supporting the biggest compiler GCC, clang and MSVC. /// - 2016/09/07 (1.15.3) - Fixed `NK_INCLUDE_COMMAND_USERDATA` define to not cause an error. /// - 2016/09/04 (1.15.2) - Fixed wrong combobox height calculation. /// - 2016/09/03 (1.15.1) - Fixed gaps inside combo boxes in OpenGL. /// - 2016/09/02 (1.15.0) - Changed nuklear to not have any default vertex layout and /// instead made it user provided. The range of types to convert /// to is quite limited at the moment, but I would be more than /// happy to accept PRs to add additional. /// - 2016/08/30 (1.14.2) - Removed unused variables. /// - 2016/08/30 (1.14.1) - Fixed C++ build errors. /// - 2016/08/30 (1.14.0) - Removed mouse dragging from SDL demo since it does not work correctly. /// - 2016/08/30 (1.13.4) - Tweaked some default styling variables. /// - 2016/08/30 (1.13.3) - Hopefully fixed drawing bug in slider, in general I would /// refrain from using slider with a big number of steps. /// - 2016/08/30 (1.13.2) - Fixed close and minimize button which would fire even if the /// window was in Read Only Mode. /// - 2016/08/30 (1.13.1) - Fixed popup panel padding handling which was previously just /// a hack for combo box and menu. /// - 2016/08/30 (1.13.0) - Removed `NK_WINDOW_DYNAMIC` flag from public API since /// it is bugged and causes issues in window selection. /// - 2016/08/30 (1.12.0) - Removed scaler size. The size of the scaler is now /// determined by the scrollbar size. /// - 2016/08/30 (1.11.2) - Fixed some drawing bugs caused by changes from 1.11.0. /// - 2016/08/30 (1.11.1) - Fixed overlapping minimized window selection. /// - 2016/08/30 (1.11.0) - Removed some internal complexity and overly complex code /// handling panel padding and panel border. /// - 2016/08/29 (1.10.0) - Added additional height parameter to `nk_combobox_xxx`. /// - 2016/08/29 (1.10.0) - Fixed drawing bug in dynamic popups. /// - 2016/08/29 (1.10.0) - Added experimental mouse scrolling to popups, menus and comboboxes. /// - 2016/08/26 (1.10.0) - Added window name string prepresentation to account for /// hash collisions. Currently limited to `NK_WINDOW_MAX_NAME` /// which in term can be redefined if not big enough. /// - 2016/08/26 (1.10.0) - Added stacks for temporary style/UI changes in code. /// - 2016/08/25 (1.10.0) - Changed `nk_input_is_key_pressed` and 'nk_input_is_key_released' /// to account for key press and release happening in one frame. /// - 2016/08/25 (1.10.0) - Added additional nk_edit flag to directly jump to the end on activate. /// - 2016/08/17 (1.09.6) - Removed invalid check for value zero in `nk_propertyx`. /// - 2016/08/16 (1.09.5) - Fixed ROM mode for deeper levels of popup windows parents. /// - 2016/08/15 (1.09.4) - Editbox are now still active if enter was pressed with flag /// `NK_EDIT_SIG_ENTER`. Main reasoning is to be able to keep /// typing after commiting. /// - 2016/08/15 (1.09.4) - Removed redundant code. /// - 2016/08/15 (1.09.4) - Fixed negative numbers in `nk_strtoi` and remove unused variable. /// - 2016/08/15 (1.09.3) - Fixed `NK_WINDOW_BACKGROUND` flag behavior to select a background /// window only as selected by hovering and not by clicking. /// - 2016/08/14 (1.09.2) - Fixed a bug in font atlas which caused wrong loading /// of glyphes for font with multiple ranges. /// - 2016/08/12 (1.09.1) - Added additional function to check if window is currently /// hidden and therefore not visible. /// - 2016/08/12 (1.09.1) - nk_window_is_closed now queries the correct flag `NK_WINDOW_CLOSED` /// instead of the old flag `NK_WINDOW_HIDDEN`. /// - 2016/08/09 (1.09.0) - Added additional double version to nk_property and changed /// the underlying implementation to not cast to float and instead /// work directly on the given values. /// - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal /// floating pointer number to string conversion for additional /// precision. /// - 2016/08/09 (1.08.0) - Added additional define to overwrite library internal /// string to floating point number conversion for additional /// precision. /// - 2016/08/08 (1.07.2) - Fixed compiling error without define `NK_INCLUDE_FIXED_TYPE`. /// - 2016/08/08 (1.07.1) - Fixed possible floating point error inside `nk_widget` leading /// to wrong wiget width calculation which results in widgets falsly /// becomming tagged as not inside window and cannot be accessed. /// - 2016/08/08 (1.07.0) - Nuklear now differentiates between hiding a window (NK_WINDOW_HIDDEN) and /// closing a window (NK_WINDOW_CLOSED). A window can be hidden/shown /// by using `nk_window_show` and closed by either clicking the close /// icon in a window or by calling `nk_window_close`. Only closed /// windows get removed at the end of the frame while hidden windows /// remain. /// - 2016/08/08 (1.06.0) - Added `nk_edit_string_zero_terminated` as a second option to /// `nk_edit_string` which takes, edits and outputs a '\0' terminated string. /// - 2016/08/08 (1.05.4) - Fixed scrollbar auto hiding behavior. /// - 2016/08/08 (1.05.3) - Fixed wrong panel padding selection in `nk_layout_widget_space`. /// - 2016/08/07 (1.05.2) - Fixed old bug in dynamic immediate mode layout API, calculating /// wrong item spacing and panel width. /// - 2016/08/07 (1.05.1) - Hopefully finally fixed combobox popup drawing bug. /// - 2016/08/07 (1.05.0) - Split varargs away from `NK_INCLUDE_STANDARD_IO` into own /// define `NK_INCLUDE_STANDARD_VARARGS` to allow more fine /// grained controlled over library includes. /// - 2016/08/06 (1.04.5) - Changed memset calls to `NK_MEMSET`. /// - 2016/08/04 (1.04.4) - Fixed fast window scaling behavior. /// - 2016/08/04 (1.04.3) - Fixed window scaling, movement bug which appears if you /// move/scale a window and another window is behind it. /// If you are fast enough then the window behind gets activated /// and the operation is blocked. I now require activating /// by hovering only if mouse is not pressed. /// - 2016/08/04 (1.04.2) - Fixed changing fonts. /// - 2016/08/03 (1.04.1) - Fixed `NK_WINDOW_BACKGROUND` behavior. /// - 2016/08/03 (1.04.0) - Added color parameter to `nk_draw_image`. /// - 2016/08/03 (1.04.0) - Added additional window padding style attributes for /// sub windows (combo, menu, ...). /// - 2016/08/03 (1.04.0) - Added functions to show/hide software cursor. /// - 2016/08/03 (1.04.0) - Added `NK_WINDOW_BACKGROUND` flag to force a window /// to be always in the background of the screen. /// - 2016/08/03 (1.03.2) - Removed invalid assert macro for NK_RGB color picker. /// - 2016/08/01 (1.03.1) - Added helper macros into header include guard. /// - 2016/07/29 (1.03.0) - Moved the window/table pool into the header part to /// simplify memory management by removing the need to /// allocate the pool. /// - 2016/07/29 (1.02.0) - Added auto scrollbar hiding window flag which if enabled /// will hide the window scrollbar after NK_SCROLLBAR_HIDING_TIMEOUT /// seconds without window interaction. To make it work /// you have to also set a delta time inside the `nk_context`. /// - 2016/07/25 (1.01.1) - Fixed small panel and panel border drawing bugs. /// - 2016/07/15 (1.01.0) - Added software cursor to `nk_style` and `nk_context`. /// - 2016/07/15 (1.01.0) - Added const correctness to `nk_buffer_push' data argument. /// - 2016/07/15 (1.01.0) - Removed internal font baking API and simplified /// font atlas memory management by converting pointer /// arrays for fonts and font configurations to lists. /// - 2016/07/15 (1.00.0) - Changed button API to use context dependend button /// behavior instead of passing it for every function call. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ================================================ FILE: src/CREDITS ================================================ /// ## Gallery /// ![Figure [blue]: Feature overview with blue color styling](https://cloud.githubusercontent.com/assets/8057201/13538240/acd96876-e249-11e5-9547-5ac0b19667a0.png) /// ![Figure [red]: Feature overview with red color styling](https://cloud.githubusercontent.com/assets/8057201/13538243/b04acd4c-e249-11e5-8fd2-ad7744a5b446.png) /// ![Figure [widgets]: Widget overview](https://cloud.githubusercontent.com/assets/8057201/11282359/3325e3c6-8eff-11e5-86cb-cf02b0596087.png) /// ![Figure [blackwhite]: Black and white](https://cloud.githubusercontent.com/assets/8057201/11033668/59ab5d04-86e5-11e5-8091-c56f16411565.png) /// ![Figure [filexp]: File explorer](https://cloud.githubusercontent.com/assets/8057201/10718115/02a9ba08-7b6b-11e5-950f-adacdd637739.png) /// ![Figure [opengl]: OpenGL Editor](https://cloud.githubusercontent.com/assets/8057201/12779619/2a20d72c-ca69-11e5-95fe-4edecf820d5c.png) /// ![Figure [nodedit]: Node Editor](https://cloud.githubusercontent.com/assets/8057201/9976995/e81ac04a-5ef7-11e5-872b-acd54fbeee03.gif) /// ![Figure [skinning]: Using skinning in Nuklear](https://cloud.githubusercontent.com/assets/8057201/15991632/76494854-30b8-11e6-9555-a69840d0d50b.png) /// ![Figure [bf]: Heavy modified version](https://cloud.githubusercontent.com/assets/8057201/14902576/339926a8-0d9c-11e6-9fee-a8b73af04473.png) /// /// ## Credits /// Developed by Micha Mettke and every direct or indirect github contributor.

/// /// Embeds [stb_texedit](https://github.com/nothings/stb/blob/master/stb_textedit.h), [stb_truetype](https://github.com/nothings/stb/blob/master/stb_truetype.h) and [stb_rectpack](https://github.com/nothings/stb/blob/master/stb_rect_pack.h) by Sean Barret (public domain)
/// Uses [stddoc.c](https://github.com/r-lyeh/stddoc.c) from r-lyeh@github.com for documentation generation

/// Embeds ProggyClean.ttf font by Tristan Grimmer (MIT license).
/// /// Big thank you to Omar Cornut (ocornut@github) for his [imgui library](https://github.com/ocornut/imgui) and /// giving me the inspiration for this library, Casey Muratori for handmade hero /// and his original immediate mode graphical user interface idea and Sean /// Barret for his amazing single header libraries which restored my faith /// in libraries and brought me to create some of my own. Finally Apoorva Joshi /// for his single header file packer. ================================================ FILE: src/HEADER ================================================ /// # Nuklear /// ![](https://cloud.githubusercontent.com/assets/8057201/11761525/ae06f0ca-a0c6-11e5-819d-5610b25f6ef4.gif) /// /// ## Contents /// 1. About section /// 2. Highlights section /// 3. Features section /// 4. Usage section /// 1. Flags section /// 2. Constants section /// 3. Dependencies section /// 5. Example section /// 6. API section /// 1. Context section /// 2. Input section /// 3. Drawing section /// 4. Window section /// 5. Layouting section /// 6. Groups section /// 7. Tree section /// 8. Properties section /// 7. License section /// 8. Changelog section /// 9. Gallery section /// 10. Credits section /// /// ## About /// This is a minimal state immediate mode graphical user interface toolkit /// written in ANSI C and licensed under public domain. It was designed as a simple /// embeddable user interface for application and does not have any dependencies, /// a default renderbackend or OS window and input handling but instead provides a very modular /// library approach by using simple input state for input and draw /// commands describing primitive shapes as output. So instead of providing a /// layered library that tries to abstract over a number of platform and /// render backends it only focuses on the actual UI. /// /// ## Highlights /// - Graphical user interface toolkit /// - Single header library /// - Written in C89 (a.k.a. ANSI C or ISO C90) /// - Small codebase (~18kLOC) /// - Focus on portability, efficiency and simplicity /// - No dependencies (not even the standard library if not wanted) /// - Fully skinnable and customizable /// - Low memory footprint with total memory control if needed or wanted /// - UTF-8 support /// - No global or hidden state /// - Customizable library modules (you can compile and use only what you need) /// - Optional font baker and vertex buffer output /// /// ## Features /// - Absolutely no platform dependent code /// - Memory management control ranging from/to /// - Ease of use by allocating everything from standard library /// - Control every byte of memory inside the library /// - Font handling control ranging from/to /// - Use your own font implementation for everything /// - Use this libraries internal font baking and handling API /// - Drawing output control ranging from/to /// - Simple shapes for more high level APIs which already have drawing capabilities /// - Hardware accessible anti-aliased vertex buffer output /// - Customizable colors and properties ranging from/to /// - Simple changes to color by filling a simple color table /// - Complete control with ability to use skinning to decorate widgets /// - Bendable UI library with widget ranging from/to /// - Basic widgets like buttons, checkboxes, slider, ... /// - Advanced widget like abstract comboboxes, contextual menus,... /// - Compile time configuration to only compile what you need /// - Subset which can be used if you do not want to link or use the standard library /// - Can be easily modified to only update on user input instead of frame updates /// /// ## Usage /// This library is self contained in one single header file and can be used either /// in header only mode or in implementation mode. The header only mode is used /// by default when included and allows including this header in other headers /// and does not contain the actual implementation.

/// /// The implementation mode requires to define the preprocessor macro /// NK_IMPLEMENTATION in *one* .c/.cpp file before #includeing this file, e.g.: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~C /// #define NK_IMPLEMENTATION /// #include "nuklear.h" /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Also optionally define the symbols listed in the section "OPTIONAL DEFINES" /// below in header and implementation mode if you want to use additional functionality /// or need more control over the library. /// /// !!! WARNING /// Every time nuklear is included define the same compiler flags. This very important not doing so could lead to compiler errors or even worse stack corruptions. /// /// ### Flags /// Flag | Description /// --------------------------------|------------------------------------------ /// NK_PRIVATE | If defined declares all functions as static, so they can only be accessed inside the file that contains the implementation /// NK_INCLUDE_FIXED_TYPES | If defined it will include header `` for fixed sized types otherwise nuklear tries to select the correct type. If that fails it will throw a compiler error and you have to select the correct types yourself. /// NK_INCLUDE_DEFAULT_ALLOCATOR | If defined it will include header `` and provide additional functions to use this library without caring for memory allocation control and therefore ease memory management. /// NK_INCLUDE_STANDARD_IO | If defined it will include header `` and provide additional functions depending on file loading. /// NK_INCLUDE_STANDARD_VARARGS | If defined it will include header and provide additional functions depending on file loading. /// NK_INCLUDE_VERTEX_BUFFER_OUTPUT | Defining this adds a vertex draw command list backend to this library, which allows you to convert queue commands into vertex draw commands. This is mainly if you need a hardware accessible format for OpenGL, DirectX, Vulkan, Metal,... /// NK_INCLUDE_FONT_BAKING | Defining this adds `stb_truetype` and `stb_rect_pack` implementation to this library and provides font baking and rendering. If you already have font handling or do not want to use this font handler you don't have to define it. /// NK_INCLUDE_DEFAULT_FONT | Defining this adds the default font: ProggyClean.ttf into this library which can be loaded into a font atlas and allows using this library without having a truetype font /// NK_INCLUDE_COMMAND_USERDATA | Defining this adds a userdata pointer into each command. Can be useful for example if you want to provide custom shaders depending on the used widget. Can be combined with the style structures. /// NK_BUTTON_TRIGGER_ON_RELEASE | Different platforms require button clicks occurring either on buttons being pressed (up to down) or released (down to up). By default this library will react on buttons being pressed, but if you define this it will only trigger if a button is released. /// NK_ZERO_COMMAND_MEMORY | Defining this will zero out memory for each drawing command added to a drawing queue (inside nk_command_buffer_push). Zeroing command memory is very useful for fast checking (using memcmp) if command buffers are equal and avoid drawing frames when nothing on screen has changed since previous frame. /// NK_UINT_DRAW_INDEX | Defining this will set the size of vertex index elements when using NK_VERTEX_BUFFER_OUTPUT to 32bit instead of the default of 16bit /// NK_KEYSTATE_BASED_INPUT | Define this if your backend uses key state for each frame rather than key press/release events /// /// !!! WARNING /// The following flags will pull in the standard C library: /// - NK_INCLUDE_DEFAULT_ALLOCATOR /// - NK_INCLUDE_STANDARD_IO /// - NK_INCLUDE_STANDARD_VARARGS /// /// !!! WARNING /// The following flags if defined need to be defined for both header and implementation: /// - NK_INCLUDE_FIXED_TYPES /// - NK_INCLUDE_DEFAULT_ALLOCATOR /// - NK_INCLUDE_STANDARD_VARARGS /// - NK_INCLUDE_VERTEX_BUFFER_OUTPUT /// - NK_INCLUDE_FONT_BAKING /// - NK_INCLUDE_DEFAULT_FONT /// - NK_INCLUDE_STANDARD_VARARGS /// - NK_INCLUDE_COMMAND_USERDATA /// - NK_UINT_DRAW_INDEX /// /// ### Constants /// Define | Description /// --------------------------------|--------------------------------------- /// NK_BUFFER_DEFAULT_INITIAL_SIZE | Initial buffer size allocated by all buffers while using the default allocator functions included by defining NK_INCLUDE_DEFAULT_ALLOCATOR. If you don't want to allocate the default 4k memory then redefine it. /// NK_MAX_NUMBER_BUFFER | Maximum buffer size for the conversion buffer between float and string Under normal circumstances this should be more than sufficient. /// NK_INPUT_MAX | Defines the max number of bytes which can be added as text input in one frame. Under normal circumstances this should be more than sufficient. /// /// !!! WARNING /// The following constants if defined need to be defined for both header and implementation: /// - NK_MAX_NUMBER_BUFFER /// - NK_BUFFER_DEFAULT_INITIAL_SIZE /// - NK_INPUT_MAX /// /// ### Dependencies /// Function | Description /// ------------|--------------------------------------------------------------- /// NK_ASSERT | If you don't define this, nuklear will use with assert(). /// NK_MEMSET | You can define this to 'memset' or your own memset implementation replacement. If not nuklear will use its own version. /// NK_MEMCPY | You can define this to 'memcpy' or your own memcpy implementation replacement. If not nuklear will use its own version. /// NK_SQRT | You can define this to 'sqrt' or your own sqrt implementation replacement. If not nuklear will use its own slow and not highly accurate version. /// NK_SIN | You can define this to 'sinf' or your own sine implementation replacement. If not nuklear will use its own approximation implementation. /// NK_COS | You can define this to 'cosf' or your own cosine implementation replacement. If not nuklear will use its own approximation implementation. /// NK_STRTOD | You can define this to `strtod` or your own string to double conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). /// NK_DTOA | You can define this to `dtoa` or your own double to string conversion implementation replacement. If not defined nuklear will use its own imprecise and possibly unsafe version (does not handle nan or infinity!). /// NK_VSNPRINTF| If you define `NK_INCLUDE_STANDARD_VARARGS` as well as `NK_INCLUDE_STANDARD_IO` and want to be safe define this to `vsnprintf` on compilers supporting later versions of C or C++. By default nuklear will check for your stdlib version in C as well as compiler version in C++. if `vsnprintf` is available it will define it to `vsnprintf` directly. If not defined and if you have older versions of C or C++ it will be defined to `vsprintf` which is unsafe. /// /// !!! WARNING /// The following dependencies will pull in the standard C library if not redefined: /// - NK_ASSERT /// /// !!! WARNING /// The following dependencies if defined need to be defined for both header and implementation: /// - NK_ASSERT /// /// !!! WARNING /// The following dependencies if defined need to be defined only for the implementation part: /// - NK_MEMSET /// - NK_MEMCPY /// - NK_SQRT /// - NK_SIN /// - NK_COS /// - NK_STRTOD /// - NK_DTOA /// - NK_VSNPRINTF /// /// ## Example /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// // init gui state /// enum {EASY, HARD}; /// static int op = EASY; /// static float value = 0.6f; /// static int i = 20; /// struct nk_context ctx; /// /// nk_init_fixed(&ctx, calloc(1, MAX_MEMORY), MAX_MEMORY, &font); /// if (nk_begin(&ctx, "Show", nk_rect(50, 50, 220, 220), /// NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) { /// // fixed widget pixel width /// nk_layout_row_static(&ctx, 30, 80, 1); /// if (nk_button_label(&ctx, "button")) { /// // event handling /// } /// /// // fixed widget window ratio width /// nk_layout_row_dynamic(&ctx, 30, 2); /// if (nk_option_label(&ctx, "easy", op == EASY)) op = EASY; /// if (nk_option_label(&ctx, "hard", op == HARD)) op = HARD; /// /// // custom widget pixel width /// nk_layout_row_begin(&ctx, NK_STATIC, 30, 2); /// { /// nk_layout_row_push(&ctx, 50); /// nk_label(&ctx, "Volume:", NK_TEXT_LEFT); /// nk_layout_row_push(&ctx, 110); /// nk_slider_float(&ctx, 0, &value, 1.0f, 0.1f); /// } /// nk_layout_row_end(&ctx); /// } /// nk_end(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// ![](https://cloud.githubusercontent.com/assets/8057201/10187981/584ecd68-675c-11e5-897c-822ef534a876.png) /// /// ## API /// ================================================ FILE: src/LICENSE ================================================ /// ## License /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~none /// ------------------------------------------------------------------------------ /// This software is available under 2 licenses -- choose whichever you prefer. /// ------------------------------------------------------------------------------ /// ALTERNATIVE A - MIT License /// Copyright (c) 2016-2018 Micha Mettke /// Permission is hereby granted, free of charge, to any person obtaining a copy of /// this software and associated documentation files (the "Software"), to deal in /// the Software without restriction, including without limitation the rights to /// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies /// of the Software, and to permit persons to whom the Software is furnished to do /// so, subject to the following conditions: /// The above copyright notice and this permission notice shall be included in all /// copies or substantial portions of the Software. /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE /// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER /// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE /// SOFTWARE. /// ------------------------------------------------------------------------------ /// ALTERNATIVE B - Public Domain (www.unlicense.org) /// This is free and unencumbered software released into the public domain. /// Anyone is free to copy, modify, publish, use, compile, sell, or distribute this /// software, either in source code form or as a compiled binary, for any purpose, /// commercial or non-commercial, and by any means. /// In jurisdictions that recognize copyright laws, the author or authors of this /// software dedicate any and all copyright interest in the software to the public /// domain. We make this dedication for the benefit of the public at large and to /// the detriment of our heirs and successors. We intend this dedication to be an /// overt act of relinquishment in perpetuity of all present and future rights to /// this software under copyright law. /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE /// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN /// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION /// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. /// ------------------------------------------------------------------------------ /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ================================================ FILE: src/Readme.md ================================================ File Packer: ------------ - [Click to generate nuklear.h](http://apoorvaj.io/single-header-packer.html?macro=NK&pre=https://raw.githubusercontent.com/vurtun/nuklear/master/src/HEADER&pub=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear.h&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_internal.h&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_math.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_util.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_color.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_utf8.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_buffer.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_string.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_draw.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_vertex.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_font.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_input.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_style.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_context.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_pool.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_page_element.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_table.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_panel.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_window.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_popup.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_contextual.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_menu.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_layout.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_tree.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_group.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_list_view.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_widget.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_text.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_image.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_button.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_toggle.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_selectable.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_slider.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_progress.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_scrollbar.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_text_editor.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_edit.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_property.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_chart.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_color_picker.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_combo.c&priv=https://raw.githubusercontent.com/vurtun/nuklear/master/src/nuklear_tooltip.c&post=https://raw.githubusercontent.com/vurtun/nuklear/master/src/LICENSE&post=https://raw.githubusercontent.com/vurtun/nuklear/master/src/CHANGELOG&post=https://raw.githubusercontent.com/vurtun/nuklear/master/src/CREDITS) - On Linux/Mac just run ./paq > ../nuklear.h ================================================ FILE: src/build.py ================================================ import fnmatch import os.path import sys def print_help(): print( """usage: python single_header_packer.py --macro [--intro ] --pub --priv [--outro ] where can be a comma-separated list of files. e.g. --priv *.c,inc/*.h The resulting code is packed as follows: /* [intro file contents] */ #ifndef _SINGLE_HEADER #define _SINGLE_HEADER [public header file contents] #endif /* _SINGLE_HEADER */ #ifdef _IMPLEMENTATION [private header and source file contents] #endif /* _IMPLEMENTATION */ /* [outro file contents] */""") def parse_files(arg): files = [] paths = arg.split(",") for path in paths: if "*" in path: # Wildcard d = os.path.dirname(path) if d == "": d = "." if d == " ": continue if not os.path.exists(d): print(d + " does not exist.") exit() wildcard = os.path.basename(path) unsorted = [] for file in os.listdir(d): if fnmatch.fnmatch(file, wildcard): unsorted.append(os.path.join(d, file)) unsorted.sort() files.extend(unsorted) else: # Regular file if not os.path.exists(path): print(path + " does not exist.") exit() elif os.path.isdir(path): print(path + " is a directory. Expected a file name.") exit() else: files.append(path) return files; def omit_includes(str, files): for file in files: fname = os.path.basename(file) if ".h" in file: str = str.replace("#include \"" + fname + "\"", ""); str = str.replace("#include <" + fname + ">", ""); return str # Main start # ========== if len(sys.argv) < 2: print_help() exit() intro_files = [] pub_files = [] priv_files = [] outro_files = [] cur_arg = 1 macro = "" # Parse args # ---------- while cur_arg < len(sys.argv): if sys.argv[cur_arg] == "--help": print_help() exit() elif sys.argv[cur_arg] == "--macro": cur_arg += 1 macro = sys.argv[cur_arg] elif sys.argv[cur_arg] == "--intro": cur_arg += 1 intro_files = parse_files(sys.argv[cur_arg]) elif sys.argv[cur_arg] == "--pub": cur_arg += 1 pub_files = parse_files(sys.argv[cur_arg]) elif sys.argv[cur_arg] == "--priv": cur_arg += 1 priv_files = parse_files(sys.argv[cur_arg]) elif sys.argv[cur_arg] == "--outro": cur_arg += 1 outro_files = parse_files(sys.argv[cur_arg]) else: print("Unknown argument " + sys.argv[cur_arg]) cur_arg += 1 if macro == "": print("Option --macro is mandatory") exit() # Print concatenated output # ------------------------- print("/*") for f in intro_files: sys.stdout.write(open(f, 'r').read()) print("*/") # print(os.linesep + "#ifndef " + macro + "_SINGLE_HEADER"); # print("#define " + macro + "_SINGLE_HEADER"); print("#ifndef NK_SINGLE_FILE"); print(" #define NK_SINGLE_FILE"); print("#endif"); print(""); for f in pub_files: sys.stdout.write(open(f, 'r').read()) # print("#endif /* " + macro + "_SINGLE_HEADER */"); print(os.linesep + "#ifdef " + macro + "_IMPLEMENTATION"); print(""); for f in priv_files: print(omit_includes(open(f, 'r').read(), pub_files + priv_files)) print("#endif /* " + macro + "_IMPLEMENTATION */"); print(os.linesep + "/*") for f in outro_files: sys.stdout.write(open(f, 'r').read()) print("*/" + os.linesep) ================================================ FILE: src/nuklear.h ================================================ #ifndef NK_NUKLEAR_H_ #define NK_NUKLEAR_H_ #ifdef __cplusplus extern "C" { #endif /* * ============================================================== * * CONSTANTS * * =============================================================== */ #define NK_UNDEFINED (-1.0f) #define NK_UTF_INVALID 0xFFFD /* internal invalid utf8 rune */ #define NK_UTF_SIZE 4 /* describes the number of bytes a glyph consists of*/ #ifndef NK_INPUT_MAX #define NK_INPUT_MAX 16 #endif #ifndef NK_MAX_NUMBER_BUFFER #define NK_MAX_NUMBER_BUFFER 64 #endif #ifndef NK_SCROLLBAR_HIDING_TIMEOUT #define NK_SCROLLBAR_HIDING_TIMEOUT 4.0f #endif /* * ============================================================== * * HELPER * * =============================================================== */ #ifndef NK_API #ifdef NK_PRIVATE #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199409L)) #define NK_API static inline #elif defined(__cplusplus) #define NK_API static inline #else #define NK_API static #endif #else #define NK_API extern #endif #endif #ifndef NK_LIB #ifdef NK_SINGLE_FILE #define NK_LIB static #else #define NK_LIB extern #endif #endif #define NK_INTERN static #define NK_STORAGE static #define NK_GLOBAL static #define NK_FLAG(x) (1 << (x)) #define NK_STRINGIFY(x) #x #define NK_MACRO_STRINGIFY(x) NK_STRINGIFY(x) #define NK_STRING_JOIN_IMMEDIATE(arg1, arg2) arg1 ## arg2 #define NK_STRING_JOIN_DELAY(arg1, arg2) NK_STRING_JOIN_IMMEDIATE(arg1, arg2) #define NK_STRING_JOIN(arg1, arg2) NK_STRING_JOIN_DELAY(arg1, arg2) #ifdef _MSC_VER #define NK_UNIQUE_NAME(name) NK_STRING_JOIN(name,__COUNTER__) #else #define NK_UNIQUE_NAME(name) NK_STRING_JOIN(name,__LINE__) #endif #ifndef NK_STATIC_ASSERT #define NK_STATIC_ASSERT(exp) typedef char NK_UNIQUE_NAME(_dummy_array)[(exp)?1:-1] #endif #ifndef NK_FILE_LINE #ifdef _MSC_VER #define NK_FILE_LINE __FILE__ ":" NK_MACRO_STRINGIFY(__COUNTER__) #else #define NK_FILE_LINE __FILE__ ":" NK_MACRO_STRINGIFY(__LINE__) #endif #endif #define NK_MIN(a,b) ((a) < (b) ? (a) : (b)) #define NK_MAX(a,b) ((a) < (b) ? (b) : (a)) #define NK_CLAMP(i,v,x) (NK_MAX(NK_MIN(v,x), i)) #ifdef NK_INCLUDE_STANDARD_VARARGS #if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */ #include #define NK_PRINTF_FORMAT_STRING _Printf_format_string_ #else #define NK_PRINTF_FORMAT_STRING #endif #if defined(__GNUC__) #define NK_PRINTF_VARARG_FUNC(fmtargnumber) __attribute__((format(__printf__, fmtargnumber, fmtargnumber+1))) #define NK_PRINTF_VALIST_FUNC(fmtargnumber) __attribute__((format(__printf__, fmtargnumber, 0))) #else #define NK_PRINTF_VARARG_FUNC(fmtargnumber) #define NK_PRINTF_VALIST_FUNC(fmtargnumber) #endif #endif /* * =============================================================== * * BASIC * * =============================================================== */ #ifdef NK_INCLUDE_FIXED_TYPES #include #define NK_INT8 int8_t #define NK_UINT8 uint8_t #define NK_INT16 int16_t #define NK_UINT16 uint16_t #define NK_INT32 int32_t #define NK_UINT32 uint32_t #define NK_SIZE_TYPE uintptr_t #define NK_POINTER_TYPE uintptr_t #else #ifndef NK_INT8 #define NK_INT8 signed char #endif #ifndef NK_UINT8 #define NK_UINT8 unsigned char #endif #ifndef NK_INT16 #define NK_INT16 signed short #endif #ifndef NK_UINT16 #define NK_UINT16 unsigned short #endif #ifndef NK_INT32 #if defined(_MSC_VER) #define NK_INT32 __int32 #else #define NK_INT32 signed int #endif #endif #ifndef NK_UINT32 #if defined(_MSC_VER) #define NK_UINT32 unsigned __int32 #else #define NK_UINT32 unsigned int #endif #endif #ifndef NK_SIZE_TYPE #if defined(_WIN64) && defined(_MSC_VER) #define NK_SIZE_TYPE unsigned __int64 #elif (defined(_WIN32) || defined(WIN32)) && defined(_MSC_VER) #define NK_SIZE_TYPE unsigned __int32 #elif defined(__GNUC__) || defined(__clang__) #if defined(__x86_64__) || defined(__ppc64__) #define NK_SIZE_TYPE unsigned long #else #define NK_SIZE_TYPE unsigned int #endif #else #define NK_SIZE_TYPE unsigned long #endif #endif #ifndef NK_POINTER_TYPE #if defined(_WIN64) && defined(_MSC_VER) #define NK_POINTER_TYPE unsigned __int64 #elif (defined(_WIN32) || defined(WIN32)) && defined(_MSC_VER) #define NK_POINTER_TYPE unsigned __int32 #elif defined(__GNUC__) || defined(__clang__) #if defined(__x86_64__) || defined(__ppc64__) #define NK_POINTER_TYPE unsigned long #else #define NK_POINTER_TYPE unsigned int #endif #else #define NK_POINTER_TYPE unsigned long #endif #endif #endif typedef NK_INT8 nk_char; typedef NK_UINT8 nk_uchar; typedef NK_UINT8 nk_byte; typedef NK_INT16 nk_short; typedef NK_UINT16 nk_ushort; typedef NK_INT32 nk_int; typedef NK_UINT32 nk_uint; typedef NK_SIZE_TYPE nk_size; typedef NK_POINTER_TYPE nk_ptr; typedef nk_uint nk_hash; typedef nk_uint nk_flags; typedef nk_uint nk_rune; /* Make sure correct type size: * This will fire with a negative subscript error if the type sizes * are set incorrectly by the compiler, and compile out if not */ NK_STATIC_ASSERT(sizeof(nk_short) == 2); NK_STATIC_ASSERT(sizeof(nk_ushort) == 2); NK_STATIC_ASSERT(sizeof(nk_uint) == 4); NK_STATIC_ASSERT(sizeof(nk_int) == 4); NK_STATIC_ASSERT(sizeof(nk_byte) == 1); NK_STATIC_ASSERT(sizeof(nk_flags) >= 4); NK_STATIC_ASSERT(sizeof(nk_rune) >= 4); NK_STATIC_ASSERT(sizeof(nk_size) >= sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_ptr) >= sizeof(void*)); /* ============================================================================ * * API * * =========================================================================== */ struct nk_buffer; struct nk_allocator; struct nk_command_buffer; struct nk_draw_command; struct nk_convert_config; struct nk_style_item; struct nk_text_edit; struct nk_draw_list; struct nk_user_font; struct nk_panel; struct nk_context; struct nk_draw_vertex_layout_element; struct nk_style_button; struct nk_style_toggle; struct nk_style_selectable; struct nk_style_slide; struct nk_style_progress; struct nk_style_scrollbar; struct nk_style_edit; struct nk_style_property; struct nk_style_chart; struct nk_style_combo; struct nk_style_tab; struct nk_style_window_header; struct nk_style_window; enum {nk_false, nk_true}; struct nk_color {nk_byte r,g,b,a;}; struct nk_colorf {float r,g,b,a;}; struct nk_vec2 {float x,y;}; struct nk_vec2i {short x, y;}; struct nk_rect {float x,y,w,h;}; struct nk_recti {short x,y,w,h;}; typedef char nk_glyph[NK_UTF_SIZE]; typedef union {void *ptr; int id;} nk_handle; struct nk_image {nk_handle handle;unsigned short w,h;unsigned short region[4];}; struct nk_cursor {struct nk_image img; struct nk_vec2 size, offset;}; struct nk_scroll {nk_uint x, y;}; enum nk_heading {NK_UP, NK_RIGHT, NK_DOWN, NK_LEFT}; enum nk_button_behavior {NK_BUTTON_DEFAULT, NK_BUTTON_REPEATER}; enum nk_modify {NK_FIXED = nk_false, NK_MODIFIABLE = nk_true}; enum nk_orientation {NK_VERTICAL, NK_HORIZONTAL}; enum nk_collapse_states {NK_MINIMIZED = nk_false, NK_MAXIMIZED = nk_true}; enum nk_show_states {NK_HIDDEN = nk_false, NK_SHOWN = nk_true}; enum nk_chart_type {NK_CHART_LINES, NK_CHART_COLUMN, NK_CHART_MAX}; enum nk_chart_event {NK_CHART_HOVERING = 0x01, NK_CHART_CLICKED = 0x02}; enum nk_color_format {NK_RGB, NK_RGBA}; enum nk_popup_type {NK_POPUP_STATIC, NK_POPUP_DYNAMIC}; enum nk_layout_format {NK_DYNAMIC, NK_STATIC}; enum nk_tree_type {NK_TREE_NODE, NK_TREE_TAB}; typedef void*(*nk_plugin_alloc)(nk_handle, void *old, nk_size); typedef void (*nk_plugin_free)(nk_handle, void *old); typedef int(*nk_plugin_filter)(const struct nk_text_edit*, nk_rune unicode); typedef void(*nk_plugin_paste)(nk_handle, struct nk_text_edit*); typedef void(*nk_plugin_copy)(nk_handle, const char*, int len); struct nk_allocator { nk_handle userdata; nk_plugin_alloc alloc; nk_plugin_free free; }; enum nk_symbol_type { NK_SYMBOL_NONE, NK_SYMBOL_X, NK_SYMBOL_UNDERSCORE, NK_SYMBOL_CIRCLE_SOLID, NK_SYMBOL_CIRCLE_OUTLINE, NK_SYMBOL_RECT_SOLID, NK_SYMBOL_RECT_OUTLINE, NK_SYMBOL_TRIANGLE_UP, NK_SYMBOL_TRIANGLE_DOWN, NK_SYMBOL_TRIANGLE_LEFT, NK_SYMBOL_TRIANGLE_RIGHT, NK_SYMBOL_PLUS, NK_SYMBOL_MINUS, NK_SYMBOL_MAX }; /* ============================================================================= * * CONTEXT * * =============================================================================*/ /*/// ### Context /// Contexts are the main entry point and the majestro of nuklear and contain all required state. /// They are used for window, memory, input, style, stack, commands and time management and need /// to be passed into all nuklear GUI specific functions. /// /// #### Usage /// To use a context it first has to be initialized which can be achieved by calling /// one of either `nk_init_default`, `nk_init_fixed`, `nk_init`, `nk_init_custom`. /// Each takes in a font handle and a specific way of handling memory. Memory control /// hereby ranges from standard library to just specifying a fixed sized block of memory /// which nuklear has to manage itself from. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // [...] /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk_init_default__ | Initializes context with standard library memory allocation (malloc,free) /// __nk_init_fixed__ | Initializes context from single fixed size memory block /// __nk_init__ | Initializes context with memory allocator callbacks for alloc and free /// __nk_init_custom__ | Initializes context from two buffers. One for draw commands the other for window/panel/table allocations /// __nk_clear__ | Called at the end of the frame to reset and prepare the context for the next frame /// __nk_free__ | Shutdown and free all memory allocated inside the context /// __nk_set_user_data__| Utility function to pass user data to draw command */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR /*/// #### nk_init_default /// Initializes a `nk_context` struct with a default standard library allocator. /// Should be used if you don't want to be bothered with memory management in nuklear. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_default(struct nk_context *ctx, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. /// */ NK_API int nk_init_default(struct nk_context*, const struct nk_user_font*); #endif /*/// #### nk_init_fixed /// Initializes a `nk_context` struct from single fixed size memory block /// Should be used if you want complete control over nuklear's memory management. /// Especially recommended for system with little memory or systems with virtual memory. /// For the later case you can just allocate for example 16MB of virtual memory /// and only the required amount of memory will actually be committed. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_fixed(struct nk_context *ctx, void *memory, nk_size size, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// !!! Warning /// make sure the passed memory block is aligned correctly for `nk_draw_commands`. /// /// Parameter | Description /// ------------|-------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __memory__ | Must point to a previously allocated memory block /// __size__ | Must contain the total size of __memory__ /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init_fixed(struct nk_context*, void *memory, nk_size size, const struct nk_user_font*); /*/// #### nk_init /// Initializes a `nk_context` struct with memory allocation callbacks for nuklear to allocate /// memory from. Used internally for `nk_init_default` and provides a kitchen sink allocation /// interface to nuklear. Can be useful for cases like monitoring memory consumption. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __alloc__ | Must point to a previously allocated memory allocator /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init(struct nk_context*, struct nk_allocator*, const struct nk_user_font*); /*/// #### nk_init_custom /// Initializes a `nk_context` struct from two different either fixed or growing /// buffers. The first buffer is for allocating draw commands while the second buffer is /// used for allocating windows, panels and state tables. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font *font); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|--------------------------------------------------------------- /// __ctx__ | Must point to an either stack or heap allocated `nk_context` struct /// __cmds__ | Must point to a previously initialized memory buffer either fixed or dynamic to store draw commands into /// __pool__ | Must point to a previously initialized memory buffer either fixed or dynamic to store windows, panels and tables /// __font__ | Must point to a previously initialized font handle for more info look at font documentation /// /// Returns either `false(0)` on failure or `true(1)` on success. */ NK_API int nk_init_custom(struct nk_context*, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font*); /*/// #### nk_clear /// Resets the context state at the end of the frame. This includes mostly /// garbage collector tasks like removing windows or table not called and therefore /// used anymore. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_clear(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_clear(struct nk_context*); /*/// #### nk_free /// Frees all memory allocated by nuklear. Not needed if context was /// initialized with `nk_init_fixed`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_free(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_free(struct nk_context*); #ifdef NK_INCLUDE_COMMAND_USERDATA /*/// #### nk_set_user_data /// Sets the currently passed userdata passed down into each draw command. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_set_user_data(struct nk_context *ctx, nk_handle data); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|-------------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __data__ | Handle with either pointer or index to be passed into every draw commands */ NK_API void nk_set_user_data(struct nk_context*, nk_handle handle); #endif /* ============================================================================= * * INPUT * * =============================================================================*/ /*/// ### Input /// The input API is responsible for holding the current input state composed of /// mouse, key and text input states. /// It is worth noting that no direct OS or window handling is done in nuklear. /// Instead all input state has to be provided by platform specific code. This on one hand /// expects more work from the user and complicates usage but on the other hand /// provides simple abstraction over a big number of platforms, libraries and other /// already provided functionality. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// // [...] /// } /// } nk_input_end(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Usage /// Input state needs to be provided to nuklear by first calling `nk_input_begin` /// which resets internal state like delta mouse position and button transistions. /// After `nk_input_begin` all current input state needs to be provided. This includes /// mouse motion, button and key pressed and released, text input and scrolling. /// Both event- or state-based input handling are supported by this API /// and should work without problems. Finally after all input state has been /// mirrored `nk_input_end` needs to be called to finish input process. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// // [...] /// } /// } /// nk_input_end(&ctx); /// // [...] /// nk_clear(&ctx); /// } nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk_input_begin__ | Begins the input mirroring process. Needs to be called before all other `nk_input_xxx` calls /// __nk_input_motion__ | Mirrors mouse cursor position /// __nk_input_key__ | Mirrors key state with either pressed or released /// __nk_input_button__ | Mirrors mouse button state with either pressed or released /// __nk_input_scroll__ | Mirrors mouse scroll values /// __nk_input_char__ | Adds a single ASCII text character into an internal text buffer /// __nk_input_glyph__ | Adds a single multi-byte UTF-8 character into an internal text buffer /// __nk_input_unicode__| Adds a single unicode rune into an internal text buffer /// __nk_input_end__ | Ends the input mirroring process by calculating state changes. Don't call any `nk_input_xxx` function referenced above after this call */ enum nk_keys { NK_KEY_NONE, NK_KEY_SHIFT, NK_KEY_CTRL, NK_KEY_DEL, NK_KEY_ENTER, NK_KEY_TAB, NK_KEY_BACKSPACE, NK_KEY_COPY, NK_KEY_CUT, NK_KEY_PASTE, NK_KEY_UP, NK_KEY_DOWN, NK_KEY_LEFT, NK_KEY_RIGHT, /* Shortcuts: text field */ NK_KEY_TEXT_INSERT_MODE, NK_KEY_TEXT_REPLACE_MODE, NK_KEY_TEXT_RESET_MODE, NK_KEY_TEXT_LINE_START, NK_KEY_TEXT_LINE_END, NK_KEY_TEXT_START, NK_KEY_TEXT_END, NK_KEY_TEXT_UNDO, NK_KEY_TEXT_REDO, NK_KEY_TEXT_SELECT_ALL, NK_KEY_TEXT_WORD_LEFT, NK_KEY_TEXT_WORD_RIGHT, /* Shortcuts: scrollbar */ NK_KEY_SCROLL_START, NK_KEY_SCROLL_END, NK_KEY_SCROLL_DOWN, NK_KEY_SCROLL_UP, NK_KEY_MAX }; enum nk_buttons { NK_BUTTON_LEFT, NK_BUTTON_MIDDLE, NK_BUTTON_RIGHT, NK_BUTTON_DOUBLE, NK_BUTTON_MAX }; /*/// #### nk_input_begin /// Begins the input mirroring process by resetting text, scroll /// mouse, previous mouse position and movement as well as key state transitions, /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_begin(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_input_begin(struct nk_context*); /*/// #### nk_input_motion /// Mirrors current mouse position to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_motion(struct nk_context *ctx, int x, int y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __x__ | Must hold an integer describing the current mouse cursor x-position /// __y__ | Must hold an integer describing the current mouse cursor y-position */ NK_API void nk_input_motion(struct nk_context*, int x, int y); /*/// #### nk_input_key /// Mirrors the state of a specific key to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_key(struct nk_context*, enum nk_keys key, int down); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __key__ | Must be any value specified in enum `nk_keys` that needs to be mirrored /// __down__ | Must be 0 for key is up and 1 for key is down */ NK_API void nk_input_key(struct nk_context*, enum nk_keys, int down); /*/// #### nk_input_button /// Mirrors the state of a specific mouse button to nuklear /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_button(struct nk_context *ctx, enum nk_buttons btn, int x, int y, int down); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __btn__ | Must be any value specified in enum `nk_buttons` that needs to be mirrored /// __x__ | Must contain an integer describing mouse cursor x-position on click up/down /// __y__ | Must contain an integer describing mouse cursor y-position on click up/down /// __down__ | Must be 0 for key is up and 1 for key is down */ NK_API void nk_input_button(struct nk_context*, enum nk_buttons, int x, int y, int down); /*/// #### nk_input_scroll /// Copies the last mouse scroll value to nuklear. Is generally /// a scroll value. So does not have to come from mouse and could also originate /// TODO finish this sentence /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_scroll(struct nk_context *ctx, struct nk_vec2 val); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __val__ | vector with both X- as well as Y-scroll value */ NK_API void nk_input_scroll(struct nk_context*, struct nk_vec2 val); /*/// #### nk_input_char /// Copies a single ASCII character into an internal text buffer /// This is basically a helper function to quickly push ASCII characters into /// nuklear. /// /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_char(struct nk_context *ctx, char c); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __c__ | Must be a single ASCII character preferable one that can be printed */ NK_API void nk_input_char(struct nk_context*, char); /*/// #### nk_input_glyph /// Converts an encoded unicode rune into UTF-8 and copies the result into an /// internal text buffer. /// /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_glyph(struct nk_context *ctx, const nk_glyph g); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __g__ | UTF-32 unicode codepoint */ NK_API void nk_input_glyph(struct nk_context*, const nk_glyph); /*/// #### nk_input_unicode /// Converts a unicode rune into UTF-8 and copies the result /// into an internal text buffer. /// !!! Note /// Stores up to NK_INPUT_MAX bytes between `nk_input_begin` and `nk_input_end`. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_unicode(struct nk_context*, nk_rune rune); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct /// __rune__ | UTF-32 unicode codepoint */ NK_API void nk_input_unicode(struct nk_context*, nk_rune); /*/// #### nk_input_end /// End the input mirroring process by resetting mouse grabbing /// state to ensure the mouse cursor is not grabbed indefinitely. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_input_end(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to a previously initialized `nk_context` struct */ NK_API void nk_input_end(struct nk_context*); /* ============================================================================= * * DRAWING * * =============================================================================*/ /*/// ### Drawing /// This library was designed to be render backend agnostic so it does /// not draw anything to screen directly. Instead all drawn shapes, widgets /// are made of, are buffered into memory and make up a command queue. /// Each frame therefore fills the command buffer with draw commands /// that then need to be executed by the user and his own render backend. /// After that the command buffer needs to be cleared and a new frame can be /// started. It is probably important to note that the command buffer is the main /// drawing API and the optional vertex buffer API only takes this format and /// converts it into a hardware accessible format. /// /// #### Usage /// To draw all draw commands accumulated over a frame you need your own render /// backend able to draw a number of 2D primitives. This includes at least /// filled and stroked rectangles, circles, text, lines, triangles and scissors. /// As soon as this criterion is met you can iterate over each draw command /// and execute each draw command in a interpreter like fashion: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case //...: /// //[...] /// } /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In program flow context draw commands need to be executed after input has been /// gathered and the complete UI with windows and their contained widgets have /// been executed and before calling `nk_clear` which frees all previously /// allocated draw commands. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// [...] /// } /// } /// nk_input_end(&ctx); /// // /// // [...] /// // /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// You probably noticed that you have to draw all of the UI each frame which is /// quite wasteful. While the actual UI updating loop is quite fast rendering /// without actually needing it is not. So there are multiple things you could do. /// /// First is only update on input. This of course is only an option if your /// application only depends on the UI and does not require any outside calculations. /// If you actually only update on input make sure to update the UI two times each /// frame and call `nk_clear` directly after the first pass and only draw in /// the second pass. In addition it is recommended to also add additional timers /// to make sure the UI is not drawn more than a fixed number of frames per second. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // [...wait for input ] /// // [...do two UI passes ...] /// do_ui(...) /// nk_clear(&ctx); /// do_ui(...) /// // /// // draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// //[...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// The second probably more applicable trick is to only draw if anything changed. /// It is not really useful for applications with continuous draw loop but /// quite useful for desktop applications. To actually get nuklear to only /// draw on changes you first have to define `NK_ZERO_COMMAND_MEMORY` and /// allocate a memory buffer that will store each unique drawing output. /// After each frame you compare the draw command memory inside the library /// with your allocated buffer by memcmp. If memcmp detects differences /// you have to copy the command buffer into the allocated buffer /// and then draw like usual (this example uses fixed memory but you could /// use dynamically allocated memory). /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// //[... other defines ...] /// #define NK_ZERO_COMMAND_MEMORY /// #include "nuklear.h" /// // /// // setup context /// struct nk_context ctx; /// void *last = calloc(1,64*1024); /// void *buf = calloc(1,64*1024); /// nk_init_fixed(&ctx, buf, 64*1024); /// // /// // loop /// while (1) { /// // [...input...] /// // [...ui...] /// void *cmds = nk_buffer_memory(&ctx.memory); /// if (memcmp(cmds, last, ctx.memory.allocated)) { /// memcpy(last,cmds,ctx.memory.allocated); /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// } /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Finally while using draw commands makes sense for higher abstracted platforms like /// X11 and Win32 or drawing libraries it is often desirable to use graphics /// hardware directly. Therefore it is possible to just define /// `NK_INCLUDE_VERTEX_BUFFER_OUTPUT` which includes optional vertex output. /// To access the vertex output you first have to convert all draw commands into /// vertexes by calling `nk_convert` which takes in your preferred vertex format. /// After successfully converting all draw commands just iterate over and execute all /// vertex draw commands: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// // fill configuration /// struct your_vertex /// { /// float pos[2]; // important to keep it to 2 floats /// float uv[2]; /// unsigned char col[4]; /// }; /// struct nk_convert_config cfg = {}; /// static const struct nk_draw_vertex_layout_element vertex_layout[] = { /// {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, pos)}, /// {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct your_vertex, uv)}, /// {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct your_vertex, col)}, /// {NK_VERTEX_LAYOUT_END} /// }; /// cfg.shape_AA = NK_ANTI_ALIASING_ON; /// cfg.line_AA = NK_ANTI_ALIASING_ON; /// cfg.vertex_layout = vertex_layout; /// cfg.vertex_size = sizeof(struct your_vertex); /// cfg.vertex_alignment = NK_ALIGNOF(struct your_vertex); /// cfg.circle_segment_count = 22; /// cfg.curve_segment_count = 22; /// cfg.arc_segment_count = 22; /// cfg.global_alpha = 1.0f; /// cfg.null = dev->null; /// // /// // setup buffers and convert /// struct nk_buffer cmds, verts, idx; /// nk_buffer_init_default(&cmds); /// nk_buffer_init_default(&verts); /// nk_buffer_init_default(&idx); /// nk_convert(&ctx, &cmds, &verts, &idx, &cfg); /// // /// // draw /// nk_draw_foreach(cmd, &ctx, &cmds) { /// if (!cmd->elem_count) continue; /// //[...] /// } /// nk_buffer_free(&cms); /// nk_buffer_free(&verts); /// nk_buffer_free(&idx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------------------- /// __nk__begin__ | Returns the first draw command in the context draw command list to be drawn /// __nk__next__ | Increments the draw command iterator to the next command inside the context draw command list /// __nk_foreach__ | Iterates over each draw command inside the context draw command list /// __nk_convert__ | Converts from the abstract draw commands list into a hardware accessible vertex format /// __nk_draw_begin__ | Returns the first vertex command in the context vertex draw list to be executed /// __nk__draw_next__ | Increments the vertex command iterator to the next command inside the context vertex command list /// __nk__draw_end__ | Returns the end of the vertex draw list /// __nk_draw_foreach__ | Iterates over each vertex draw command inside the vertex draw list */ enum nk_anti_aliasing {NK_ANTI_ALIASING_OFF, NK_ANTI_ALIASING_ON}; enum nk_convert_result { NK_CONVERT_SUCCESS = 0, NK_CONVERT_INVALID_PARAM = 1, NK_CONVERT_COMMAND_BUFFER_FULL = NK_FLAG(1), NK_CONVERT_VERTEX_BUFFER_FULL = NK_FLAG(2), NK_CONVERT_ELEMENT_BUFFER_FULL = NK_FLAG(3) }; struct nk_draw_null_texture { nk_handle texture; /* texture handle to a texture with a white pixel */ struct nk_vec2 uv; /* coordinates to a white pixel in the texture */ }; struct nk_convert_config { float global_alpha; /* global alpha value */ enum nk_anti_aliasing line_AA; /* line anti-aliasing flag can be turned off if you are tight on memory */ enum nk_anti_aliasing shape_AA; /* shape anti-aliasing flag can be turned off if you are tight on memory */ unsigned circle_segment_count; /* number of segments used for circles: default to 22 */ unsigned arc_segment_count; /* number of segments used for arcs: default to 22 */ unsigned curve_segment_count; /* number of segments used for curves: default to 22 */ struct nk_draw_null_texture null; /* handle to texture with a white pixel for shape drawing */ const struct nk_draw_vertex_layout_element *vertex_layout; /* describes the vertex output format and packing */ nk_size vertex_size; /* sizeof one vertex for vertex packing */ nk_size vertex_alignment; /* vertex alignment: Can be obtained by NK_ALIGNOF */ }; /*/// #### nk__begin /// Returns a draw command list iterator to iterate all draw /// commands accumulated over one frame. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command* nk__begin(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | must point to an previously initialized `nk_context` struct at the end of a frame /// /// Returns draw command pointer pointing to the first command inside the draw command list */ NK_API const struct nk_command* nk__begin(struct nk_context*); /*/// #### nk__next /// Returns draw command pointer pointing to the next command inside the draw command list /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_command* nk__next(struct nk_context*, const struct nk_command*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmd__ | Must point to an previously a draw command either returned by `nk__begin` or `nk__next` /// /// Returns draw command pointer pointing to the next command inside the draw command list */ NK_API const struct nk_command* nk__next(struct nk_context*, const struct nk_command*); /*/// #### nk_foreach /// Iterates over each draw command inside the context draw command list /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_foreach(c, ctx) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmd__ | Command pointer initialized to NULL /// /// Iterates over each draw command inside the context draw command list */ #define nk_foreach(c, ctx) for((c) = nk__begin(ctx); (c) != 0; (c) = nk__next(ctx,c)) #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT /*/// #### nk_convert /// Converts all internal draw commands into vertex draw commands and fills /// three buffers with vertexes, vertex draw commands and vertex indices. The vertex format /// as well as some other configuration values have to be configured by filling out a /// `nk_convert_config` struct. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// nk_flags nk_convert(struct nk_context *ctx, struct nk_buffer *cmds, /// struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __cmds__ | Must point to a previously initialized buffer to hold converted vertex draw commands /// __vertices__| Must point to a previously initialized buffer to hold all produced vertices /// __elements__| Must point to a previously initialized buffer to hold all produced vertex indices /// __config__ | Must point to a filled out `nk_config` struct to configure the conversion process /// /// Returns one of enum nk_convert_result error codes /// /// Parameter | Description /// --------------------------------|----------------------------------------------------------- /// NK_CONVERT_SUCCESS | Signals a successful draw command to vertex buffer conversion /// NK_CONVERT_INVALID_PARAM | An invalid argument was passed in the function call /// NK_CONVERT_COMMAND_BUFFER_FULL | The provided buffer for storing draw commands is full or failed to allocate more memory /// NK_CONVERT_VERTEX_BUFFER_FULL | The provided buffer for storing vertices is full or failed to allocate more memory /// NK_CONVERT_ELEMENT_BUFFER_FULL | The provided buffer for storing indicies is full or failed to allocate more memory */ NK_API nk_flags nk_convert(struct nk_context*, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config*); /*/// #### nk__draw_begin /// Returns a draw vertex command buffer iterator to iterate over the vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_begin(const struct nk_context*, const struct nk_buffer*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// /// Returns vertex draw command pointer pointing to the first command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_begin(const struct nk_context*, const struct nk_buffer*); /*/// #### nk__draw_end /// Returns the vertex draw command at the end of the vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_end(const struct nk_context *ctx, const struct nk_buffer *buf); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// /// Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_end(const struct nk_context*, const struct nk_buffer*); /*/// #### nk__draw_next /// Increments the vertex draw command buffer iterator /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// const struct nk_draw_command* nk__draw_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __cmd__ | Must point to an previously either by `nk__draw_begin` or `nk__draw_next` returned vertex draw command /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame /// /// Returns vertex draw command pointer pointing to the end of the last vertex draw command inside the vertex draw command buffer */ NK_API const struct nk_draw_command* nk__draw_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_context*); /*/// #### nk_draw_foreach /// Iterates over each vertex draw command inside a vertex draw command buffer /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_draw_foreach(cmd,ctx, b) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __cmd__ | `nk_draw_command`iterator set to NULL /// __buf__ | Must point to an previously by `nk_convert` filled out vertex draw command buffer /// __ctx__ | Must point to an previously initialized `nk_context` struct at the end of a frame */ #define nk_draw_foreach(cmd,ctx, b) for((cmd)=nk__draw_begin(ctx, b); (cmd)!=0; (cmd)=nk__draw_next(cmd, b, ctx)) #endif /* ============================================================================= * * WINDOW * * ============================================================================= /// ### Window /// Windows are the main persistent state used inside nuklear and are life time /// controlled by simply "retouching" (i.e. calling) each window each frame. /// All widgets inside nuklear can only be added inside the function pair `nk_begin_xxx` /// and `nk_end`. Calling any widgets outside these two functions will result in an /// assert in debug or no state change in release mode.

/// /// Each window holds frame persistent state like position, size, flags, state tables, /// and some garbage collected internal persistent widget state. Each window /// is linked into a window stack list which determines the drawing and overlapping /// order. The topmost window thereby is the currently active window.

/// /// To change window position inside the stack occurs either automatically by /// user input by being clicked on or programmatically by calling `nk_window_focus`. /// Windows by default are visible unless explicitly being defined with flag /// `NK_WINDOW_HIDDEN`, the user clicked the close button on windows with flag /// `NK_WINDOW_CLOSABLE` or if a window was explicitly hidden by calling /// `nk_window_show`. To explicitly close and destroy a window call `nk_window_close`.

/// /// #### Usage /// To create and keep a window you have to call one of the two `nk_begin_xxx` /// functions to start window declarations and `nk_end` at the end. Furthermore it /// is recommended to check the return value of `nk_begin_xxx` and only process /// widgets inside the window if the value is not 0. Either way you have to call /// `nk_end` at the end of window declarations. Furthermore, do not attempt to /// nest `nk_begin_xxx` calls which will hopefully result in an assert or if not /// in a segmentation fault. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // [... widgets ...] /// } /// nk_end(ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In the grand concept window and widget declarations need to occur after input /// handling and before drawing to screen. Not doing so can result in higher /// latency or at worst invalid behavior. Furthermore make sure that `nk_clear` /// is called at the end of the frame. While nuklear's default platform backends /// already call `nk_clear` for you if you write your own backend not calling /// `nk_clear` can cause asserts or even worse undefined behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// /// if (nk_begin_xxx(...) { /// //[...] /// } /// nk_end(ctx); /// /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case //...: /// //[...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ------------------------------------|---------------------------------------- /// nk_begin | Starts a new window; needs to be called every frame for every window (unless hidden) or otherwise the window gets removed /// nk_begin_titled | Extended window start with separated title and identifier to allow multiple windows with same name but not title /// nk_end | Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup // /// nk_window_find | Finds and returns the window with give name /// nk_window_get_bounds | Returns a rectangle with screen position and size of the currently processed window. /// nk_window_get_position | Returns the position of the currently processed window /// nk_window_get_size | Returns the size with width and height of the currently processed window /// nk_window_get_width | Returns the width of the currently processed window /// nk_window_get_height | Returns the height of the currently processed window /// nk_window_get_panel | Returns the underlying panel which contains all processing state of the current window /// nk_window_get_content_region | Returns the position and size of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_min | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_max | Returns the upper rectangle position of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_content_region_size | Returns the size of the currently visible and non-clipped space inside the currently processed window /// nk_window_get_canvas | Returns the draw command buffer. Can be used to draw custom widgets /// nk_window_get_scroll | Gets the scroll offset of the current window /// nk_window_has_focus | Returns if the currently processed window is currently active /// nk_window_is_collapsed | Returns if the window with given name is currently minimized/collapsed /// nk_window_is_closed | Returns if the currently processed window was closed /// nk_window_is_hidden | Returns if the currently processed window was hidden /// nk_window_is_active | Same as nk_window_has_focus for some reason /// nk_window_is_hovered | Returns if the currently processed window is currently being hovered by mouse /// nk_window_is_any_hovered | Return if any window currently hovered /// nk_item_is_any_active | Returns if any window or widgets is currently hovered or active // /// nk_window_set_bounds | Updates position and size of the currently processed window /// nk_window_set_position | Updates position of the currently process window /// nk_window_set_size | Updates the size of the currently processed window /// nk_window_set_focus | Set the currently processed window as active window /// nk_window_set_scroll | Sets the scroll offset of the current window // /// nk_window_close | Closes the window with given window name which deletes the window at the end of the frame /// nk_window_collapse | Collapses the window with given window name /// nk_window_collapse_if | Collapses the window with given window name if the given condition was met /// nk_window_show | Hides a visible or reshows a hidden window /// nk_window_show_if | Hides/shows a window depending on condition */ /* /// #### nk_panel_flags /// Flag | Description /// ----------------------------|---------------------------------------- /// NK_WINDOW_BORDER | Draws a border around the window to visually separate window from the background /// NK_WINDOW_MOVABLE | The movable flag indicates that a window can be moved by user input or by dragging the window header /// NK_WINDOW_SCALABLE | The scalable flag indicates that a window can be scaled by user input by dragging a scaler icon at the button of the window /// NK_WINDOW_CLOSABLE | Adds a closable icon into the header /// NK_WINDOW_MINIMIZABLE | Adds a minimize icon into the header /// NK_WINDOW_NO_SCROLLBAR | Removes the scrollbar from the window /// NK_WINDOW_TITLE | Forces a header at the top at the window showing the title /// NK_WINDOW_SCROLL_AUTO_HIDE | Automatically hides the window scrollbar if no user interaction: also requires delta time in `nk_context` to be set each frame /// NK_WINDOW_BACKGROUND | Always keep window in the background /// NK_WINDOW_SCALE_LEFT | Puts window scaler in the left-bottom corner instead right-bottom /// NK_WINDOW_NO_INPUT | Prevents window of scaling, moving or getting focus /// /// #### nk_collapse_states /// State | Description /// ----------------|----------------------------------------------------------- /// __NK_MINIMIZED__| UI section is collased and not visibile until maximized /// __NK_MAXIMIZED__| UI section is extended and visibile until minimized ///

*/ enum nk_panel_flags { NK_WINDOW_BORDER = NK_FLAG(0), NK_WINDOW_MOVABLE = NK_FLAG(1), NK_WINDOW_SCALABLE = NK_FLAG(2), NK_WINDOW_CLOSABLE = NK_FLAG(3), NK_WINDOW_MINIMIZABLE = NK_FLAG(4), NK_WINDOW_NO_SCROLLBAR = NK_FLAG(5), NK_WINDOW_TITLE = NK_FLAG(6), NK_WINDOW_SCROLL_AUTO_HIDE = NK_FLAG(7), NK_WINDOW_BACKGROUND = NK_FLAG(8), NK_WINDOW_SCALE_LEFT = NK_FLAG(9), NK_WINDOW_NO_INPUT = NK_FLAG(10) }; /*/// #### nk_begin /// Starts a new window; needs to be called every frame for every /// window (unless hidden) or otherwise the window gets removed /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __title__ | Window title and identifier. Needs to be persistent over frames to identify the window /// __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors /// /// Returns `true(1)` if the window can be filled up with widgets from this point /// until `nk_end` or `false(0)` otherwise for example if minimized */ NK_API int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags); /*/// #### nk_begin_titled /// Extended window start with separated title and identifier to allow multiple /// windows with same title but not name /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Window identifier. Needs to be persistent over frames to identify the window /// __title__ | Window title displayed inside header if flag `NK_WINDOW_TITLE` or either `NK_WINDOW_CLOSABLE` or `NK_WINDOW_MINIMIZED` was set /// __bounds__ | Initial position and window size. However if you do not define `NK_WINDOW_SCALABLE` or `NK_WINDOW_MOVABLE` you can set window position and size every frame /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different window behaviors /// /// Returns `true(1)` if the window can be filled up with widgets from this point /// until `nk_end` or `false(0)` otherwise for example if minimized */ NK_API int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags); /*/// #### nk_end /// Needs to be called at the end of the window building process to process scaling, scrollbars and general cleanup. /// All widget calls after this functions will result in asserts or no state changes /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_end(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_end(struct nk_context *ctx); /*/// #### nk_window_find /// Finds and returns a window from passed name /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_window *nk_window_find(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Window identifier /// /// Returns a `nk_window` struct pointing to the identified window or NULL if /// no window with the given name was found */ NK_API struct nk_window *nk_window_find(struct nk_context *ctx, const char *name); /*/// #### nk_window_get_bounds /// Returns a rectangle with screen position and size of the currently processed window /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_window_get_bounds(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_rect` struct with window upper left window position and size */ NK_API struct nk_rect nk_window_get_bounds(const struct nk_context *ctx); /*/// #### nk_window_get_position /// Returns the position of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_position(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_vec2` struct with window upper left position */ NK_API struct nk_vec2 nk_window_get_position(const struct nk_context *ctx); /*/// #### nk_window_get_size /// Returns the size with width and height of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_size(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a `nk_vec2` struct with window width and height */ NK_API struct nk_vec2 nk_window_get_size(const struct nk_context*); /*/// #### nk_window_get_width /// Returns the width of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_window_get_width(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns the current window width */ NK_API float nk_window_get_width(const struct nk_context*); /*/// #### nk_window_get_height /// Returns the height of the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_window_get_height(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns the current window height */ NK_API float nk_window_get_height(const struct nk_context*); /*/// #### nk_window_get_panel /// Returns the underlying panel which contains all processing state of the current window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// !!! WARNING /// Do not keep the returned panel pointer around, it is only valid until `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_panel* nk_window_get_panel(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a pointer to window internal `nk_panel` state. */ NK_API struct nk_panel* nk_window_get_panel(struct nk_context*); /*/// #### nk_window_get_content_region /// Returns the position and size of the currently visible and non-clipped space /// inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_window_get_content_region(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_rect` struct with screen position and size (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_rect nk_window_get_content_region(struct nk_context*); /*/// #### nk_window_get_content_region_min /// Returns the upper left position of the currently visible and non-clipped /// space inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_min(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// returns `nk_vec2` struct with upper left screen position (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_min(struct nk_context*); /*/// #### nk_window_get_content_region_max /// Returns the lower right screen position of the currently visible and /// non-clipped space inside the currently processed window. /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_max(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_vec2` struct with lower right screen position (no scrollbar offset) /// of the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_max(struct nk_context*); /*/// #### nk_window_get_content_region_size /// Returns the size of the currently visible and non-clipped space inside the /// currently processed window /// /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_window_get_content_region_size(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `nk_vec2` struct with size the visible space inside the current window */ NK_API struct nk_vec2 nk_window_get_content_region_size(struct nk_context*); /*/// #### nk_window_get_canvas /// Returns the draw command buffer. Can be used to draw custom widgets /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// !!! WARNING /// Do not keep the returned command buffer pointer around it is only valid until `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_command_buffer* nk_window_get_canvas(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns a pointer to window internal `nk_command_buffer` struct used as /// drawing canvas. Can be used to do custom drawing. */ NK_API struct nk_command_buffer* nk_window_get_canvas(struct nk_context*); /*/// #### nk_window_get_scroll /// Gets the scroll offset for the current window /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __offset_x__ | A pointer to the x offset output (or NULL to ignore) /// __offset_y__ | A pointer to the y offset output (or NULL to ignore) */ NK_API void nk_window_get_scroll(struct nk_context*, nk_uint *offset_x, nk_uint *offset_y); /*/// #### nk_window_has_focus /// Returns if the currently processed window is currently active /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_has_focus(const struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `false(0)` if current window is not active or `true(1)` if it is */ NK_API int nk_window_has_focus(const struct nk_context*); /*/// #### nk_window_is_hovered /// Return if the current window is being hovered /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_hovered(struct nk_context *ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if current window is hovered or `false(0)` otherwise */ NK_API int nk_window_is_hovered(struct nk_context*); /*/// #### nk_window_is_collapsed /// Returns if the window with given name is currently minimized/collapsed /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_collapsed(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is collapsed /// /// Returns `true(1)` if current window is minimized and `false(0)` if window not /// found or is not minimized */ NK_API int nk_window_is_collapsed(struct nk_context *ctx, const char *name); /*/// #### nk_window_is_closed /// Returns if the window with given name was closed by calling `nk_close` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_closed(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is closed /// /// Returns `true(1)` if current window was closed or `false(0)` window not found or not closed */ NK_API int nk_window_is_closed(struct nk_context*, const char*); /*/// #### nk_window_is_hidden /// Returns if the window with given name is hidden /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_hidden(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is hidden /// /// Returns `true(1)` if current window is hidden or `false(0)` window not found or visible */ NK_API int nk_window_is_hidden(struct nk_context*, const char*); /*/// #### nk_window_is_active /// Same as nk_window_has_focus for some reason /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_active(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of window you want to check if it is active /// /// Returns `true(1)` if current window is active or `false(0)` window not found or not active */ NK_API int nk_window_is_active(struct nk_context*, const char*); /*/// #### nk_window_is_any_hovered /// Returns if the any window is being hovered /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_window_is_any_hovered(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if any window is hovered or `false(0)` otherwise */ NK_API int nk_window_is_any_hovered(struct nk_context*); /*/// #### nk_item_is_any_active /// Returns if the any window is being hovered or any widget is currently active. /// Can be used to decide if input should be processed by UI or your specific input handling. /// Example could be UI and 3D camera to move inside a 3D space. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_item_is_any_active(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// /// Returns `true(1)` if any window is hovered or any item is active or `false(0)` otherwise */ NK_API int nk_item_is_any_active(struct nk_context*); /*/// #### nk_window_set_bounds /// Updates position and size of window with passed in name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_bounds(struct nk_context*, const char *name, struct nk_rect bounds); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both position and size /// __bounds__ | Must point to a `nk_rect` struct with the new position and size */ NK_API void nk_window_set_bounds(struct nk_context*, const char *name, struct nk_rect bounds); /*/// #### nk_window_set_position /// Updates position of window with passed name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_position(struct nk_context*, const char *name, struct nk_vec2 pos); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both position /// __pos__ | Must point to a `nk_vec2` struct with the new position */ NK_API void nk_window_set_position(struct nk_context*, const char *name, struct nk_vec2 pos); /*/// #### nk_window_set_size /// Updates size of window with passed in name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_size(struct nk_context*, const char *name, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to modify both window size /// __size__ | Must point to a `nk_vec2` struct with new window size */ NK_API void nk_window_set_size(struct nk_context*, const char *name, struct nk_vec2); /*/// #### nk_window_set_focus /// Sets the window with given name as active /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_focus(struct nk_context*, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to set focus on */ NK_API void nk_window_set_focus(struct nk_context*, const char *name); /*/// #### nk_window_set_scroll /// Sets the scroll offset for the current window /// !!! WARNING /// Only call this function between calls `nk_begin_xxx` and `nk_end` /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __offset_x__ | The x offset to scroll to /// __offset_y__ | The y offset to scroll to */ NK_API void nk_window_set_scroll(struct nk_context*, nk_uint offset_x, nk_uint offset_y); /*/// #### nk_window_close /// Closes a window and marks it for being freed at the end of the frame /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_close(struct nk_context *ctx, const char *name); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to close */ NK_API void nk_window_close(struct nk_context *ctx, const char *name); /*/// #### nk_window_collapse /// Updates collapse state of a window with given name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_collapse(struct nk_context*, const char *name, enum nk_collapse_states state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to close /// __state__ | value out of nk_collapse_states section */ NK_API void nk_window_collapse(struct nk_context*, const char *name, enum nk_collapse_states state); /*/// #### nk_window_collapse_if /// Updates collapse state of a window with given name if given condition is met /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_collapse_if(struct nk_context*, const char *name, enum nk_collapse_states, int cond); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either collapse or maximize /// __state__ | value out of nk_collapse_states section the window should be put into /// __cond__ | condition that has to be met to actually commit the collapse state change */ NK_API void nk_window_collapse_if(struct nk_context*, const char *name, enum nk_collapse_states, int cond); /*/// #### nk_window_show /// updates visibility state of a window with given name /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_show(struct nk_context*, const char *name, enum nk_show_states); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either collapse or maximize /// __state__ | state with either visible or hidden to modify the window with */ NK_API void nk_window_show(struct nk_context*, const char *name, enum nk_show_states); /*/// #### nk_window_show_if /// Updates visibility state of a window with given name if a given condition is met /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_window_show_if(struct nk_context*, const char *name, enum nk_show_states, int cond); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __name__ | Identifier of the window to either hide or show /// __state__ | state with either visible or hidden to modify the window with /// __cond__ | condition that has to be met to actually commit the visbility state change */ NK_API void nk_window_show_if(struct nk_context*, const char *name, enum nk_show_states, int cond); /* ============================================================================= * * LAYOUT * * ============================================================================= /// ### Layouting /// Layouting in general describes placing widget inside a window with position and size. /// While in this particular implementation there are five different APIs for layouting /// each with different trade offs between control and ease of use.

/// /// All layouting methods in this library are based around the concept of a row. /// A row has a height the window content grows by and a number of columns and each /// layouting method specifies how each widget is placed inside the row. /// After a row has been allocated by calling a layouting functions and then /// filled with widgets will advance an internal pointer over the allocated row.

/// /// To actually define a layout you just call the appropriate layouting function /// and each subsequent widget call will place the widget as specified. Important /// here is that if you define more widgets then columns defined inside the layout /// functions it will allocate the next row without you having to make another layouting

/// call. /// /// Biggest limitation with using all these APIs outside the `nk_layout_space_xxx` API /// is that you have to define the row height for each. However the row height /// often depends on the height of the font.

/// /// To fix that internally nuklear uses a minimum row height that is set to the /// height plus padding of currently active font and overwrites the row height /// value if zero.

/// /// If you manually want to change the minimum row height then /// use nk_layout_set_min_row_height, and use nk_layout_reset_min_row_height to /// reset it back to be derived from font height.

/// /// Also if you change the font in nuklear it will automatically change the minimum /// row height for you and. This means if you change the font but still want /// a minimum row height smaller than the font you have to repush your value.

/// /// For actually more advanced UI I would even recommend using the `nk_layout_space_xxx` /// layouting method in combination with a cassowary constraint solver (there are /// some versions on github with permissive license model) to take over all control over widget /// layouting yourself. However for quick and dirty layouting using all the other layouting /// functions should be fine. /// /// #### Usage /// 1. __nk_layout_row_dynamic__

/// The easiest layouting function is `nk_layout_row_dynamic`. It provides each /// widgets with same horizontal space inside the row and dynamically grows /// if the owning window grows in width. So the number of columns dictates /// the size of each widget dynamically by formula: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// widget_width = (window_width - padding - spacing) * (1/colum_count) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Just like all other layouting APIs if you define more widget than columns this /// library will allocate a new row and keep all layouting parameters previously /// defined. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 30 composed of two widgets /// nk_layout_row_dynamic(&ctx, 30, 2); /// nk_widget(...); /// nk_widget(...); /// // /// // second row with same parameter as defined above /// nk_widget(...); /// nk_widget(...); /// // /// // third row uses 0 for height which will use auto layouting /// nk_layout_row_dynamic(&ctx, 0, 2); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 2. __nk_layout_row_static__

/// Another easy layouting function is `nk_layout_row_static`. It provides each /// widget with same horizontal pixel width inside the row and does not grow /// if the owning window scales smaller or bigger. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 30 composed of two widgets with width: 80 /// nk_layout_row_static(&ctx, 30, 80, 2); /// nk_widget(...); /// nk_widget(...); /// // /// // second row with same parameter as defined above /// nk_widget(...); /// nk_widget(...); /// // /// // third row uses 0 for height which will use auto layouting /// nk_layout_row_static(&ctx, 0, 80, 2); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 3. __nk_layout_row_xxx__

/// A little bit more advanced layouting API are functions `nk_layout_row_begin`, /// `nk_layout_row_push` and `nk_layout_row_end`. They allow to directly /// specify each column pixel or window ratio in a row. It supports either /// directly setting per column pixel width or widget window ratio but not /// both. Furthermore it is a immediate mode API so each value is directly /// pushed before calling a widget. Therefore the layout is not automatically /// repeating like the last two layouting functions. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // first row with height: 25 composed of two widgets with width 60 and 40 /// nk_layout_row_begin(ctx, NK_STATIC, 25, 2); /// nk_layout_row_push(ctx, 60); /// nk_widget(...); /// nk_layout_row_push(ctx, 40); /// nk_widget(...); /// nk_layout_row_end(ctx); /// // /// // second row with height: 25 composed of two widgets with window ratio 0.25 and 0.75 /// nk_layout_row_begin(ctx, NK_DYNAMIC, 25, 2); /// nk_layout_row_push(ctx, 0.25f); /// nk_widget(...); /// nk_layout_row_push(ctx, 0.75f); /// nk_widget(...); /// nk_layout_row_end(ctx); /// // /// // third row with auto generated height: composed of two widgets with window ratio 0.25 and 0.75 /// nk_layout_row_begin(ctx, NK_DYNAMIC, 0, 2); /// nk_layout_row_push(ctx, 0.25f); /// nk_widget(...); /// nk_layout_row_push(ctx, 0.75f); /// nk_widget(...); /// nk_layout_row_end(ctx); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 4. __nk_layout_row__

/// The array counterpart to API nk_layout_row_xxx is the single nk_layout_row /// functions. Instead of pushing either pixel or window ratio for every widget /// it allows to define it by array. The trade of for less control is that /// `nk_layout_row` is automatically repeating. Otherwise the behavior is the /// same. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // two rows with height: 30 composed of two widgets with width 60 and 40 /// const float size[] = {60,40}; /// nk_layout_row(ctx, NK_STATIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// // /// // two rows with height: 30 composed of two widgets with window ratio 0.25 and 0.75 /// const float ratio[] = {0.25, 0.75}; /// nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// // /// // two rows with auto generated height composed of two widgets with window ratio 0.25 and 0.75 /// const float ratio[] = {0.25, 0.75}; /// nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratio); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 5. __nk_layout_row_template_xxx__

/// The most complex and second most flexible API is a simplified flexbox version without /// line wrapping and weights for dynamic widgets. It is an immediate mode API but /// unlike `nk_layout_row_xxx` it has auto repeat behavior and needs to be called /// before calling the templated widgets. /// The row template layout has three different per widget size specifier. The first /// one is the `nk_layout_row_template_push_static` with fixed widget pixel width. /// They do not grow if the row grows and will always stay the same. /// The second size specifier is `nk_layout_row_template_push_variable` /// which defines a minimum widget size but it also can grow if more space is available /// not taken by other widgets. /// Finally there are dynamic widgets with `nk_layout_row_template_push_dynamic` /// which are completely flexible and unlike variable widgets can even shrink /// to zero if not enough space is provided. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // two rows with height: 30 composed of three widgets /// nk_layout_row_template_begin(ctx, 30); /// nk_layout_row_template_push_dynamic(ctx); /// nk_layout_row_template_push_variable(ctx, 80); /// nk_layout_row_template_push_static(ctx, 80); /// nk_layout_row_template_end(ctx); /// // /// // first row /// nk_widget(...); // dynamic widget can go to zero if not enough space /// nk_widget(...); // variable widget with min 80 pixel but can grow bigger if enough space /// nk_widget(...); // static widget with fixed 80 pixel width /// // /// // second row same layout /// nk_widget(...); /// nk_widget(...); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// 6. __nk_layout_space_xxx__

/// Finally the most flexible API directly allows you to place widgets inside the /// window. The space layout API is an immediate mode API which does not support /// row auto repeat and directly sets position and size of a widget. Position /// and size hereby can be either specified as ratio of allocated space or /// allocated space local position and pixel size. Since this API is quite /// powerful there are a number of utility functions to get the available space /// and convert between local allocated space and screen space. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_begin_xxx(...) { /// // static row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) /// nk_layout_space_begin(ctx, NK_STATIC, 500, INT_MAX); /// nk_layout_space_push(ctx, nk_rect(0,0,150,200)); /// nk_widget(...); /// nk_layout_space_push(ctx, nk_rect(200,200,100,200)); /// nk_widget(...); /// nk_layout_space_end(ctx); /// // /// // dynamic row with height: 500 (you can set column count to INT_MAX if you don't want to be bothered) /// nk_layout_space_begin(ctx, NK_DYNAMIC, 500, INT_MAX); /// nk_layout_space_push(ctx, nk_rect(0.5,0.5,0.1,0.1)); /// nk_widget(...); /// nk_layout_space_push(ctx, nk_rect(0.7,0.6,0.1,0.1)); /// nk_widget(...); /// } /// nk_end(...); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ----------------------------------------|------------------------------------ /// nk_layout_set_min_row_height | Set the currently used minimum row height to a specified value /// nk_layout_reset_min_row_height | Resets the currently used minimum row height to font height /// nk_layout_widget_bounds | Calculates current width a static layout row can fit inside a window /// nk_layout_ratio_from_pixel | Utility functions to calculate window ratio from pixel size // /// nk_layout_row_dynamic | Current layout is divided into n same sized growing columns /// nk_layout_row_static | Current layout is divided into n same fixed sized columns /// nk_layout_row_begin | Starts a new row with given height and number of columns /// nk_layout_row_push | Pushes another column with given size or window ratio /// nk_layout_row_end | Finished previously started row /// nk_layout_row | Specifies row columns in array as either window ratio or size // /// nk_layout_row_template_begin | Begins the row template declaration /// nk_layout_row_template_push_dynamic | Adds a dynamic column that dynamically grows and can go to zero if not enough space /// nk_layout_row_template_push_variable | Adds a variable column that dynamically grows but does not shrink below specified pixel width /// nk_layout_row_template_push_static | Adds a static column that does not grow and will always have the same size /// nk_layout_row_template_end | Marks the end of the row template // /// nk_layout_space_begin | Begins a new layouting space that allows to specify each widgets position and size /// nk_layout_space_push | Pushes position and size of the next widget in own coordinate space either as pixel or ratio /// nk_layout_space_end | Marks the end of the layouting space // /// nk_layout_space_bounds | Callable after nk_layout_space_begin and returns total space allocated /// nk_layout_space_to_screen | Converts vector from nk_layout_space coordinate space into screen space /// nk_layout_space_to_local | Converts vector from screen space into nk_layout_space coordinates /// nk_layout_space_rect_to_screen | Converts rectangle from nk_layout_space coordinate space into screen space /// nk_layout_space_rect_to_local | Converts rectangle from screen space into nk_layout_space coordinates */ /*/// #### nk_layout_set_min_row_height /// Sets the currently used minimum row height. /// !!! WARNING /// The passed height needs to include both your preferred row height /// as well as padding. No internal padding is added. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_set_min_row_height(struct nk_context*, float height); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | New minimum row height to be used for auto generating the row height */ NK_API void nk_layout_set_min_row_height(struct nk_context*, float height); /*/// #### nk_layout_reset_min_row_height /// Reset the currently used minimum row height back to `font_height + text_padding + padding` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_reset_min_row_height(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_reset_min_row_height(struct nk_context*); /*/// #### nk_layout_widget_bounds /// Returns the width of the next row allocate by one of the layouting functions /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_widget_bounds(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// /// Return `nk_rect` with both position and size of the next row */ NK_API struct nk_rect nk_layout_widget_bounds(struct nk_context*); /*/// #### nk_layout_ratio_from_pixel /// Utility functions to calculate window ratio from pixel size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_layout_ratio_from_pixel(struct nk_context*, float pixel_width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __pixel__ | Pixel_width to convert to window ratio /// /// Returns `nk_rect` with both position and size of the next row */ NK_API float nk_layout_ratio_from_pixel(struct nk_context*, float pixel_width); /*/// #### nk_layout_row_dynamic /// Sets current row layout to share horizontal space /// between @cols number of widgets evenly. Once called all subsequent widget /// calls greater than @cols will allocate a new row with same layout. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols); /*/// #### nk_layout_row_static /// Sets current row layout to fill @cols number of widgets /// in row with same @item_width horizontal size. Once called all subsequent widget /// calls greater than @cols will allocate a new row with same layout. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting /// __width__ | Holds pixel width of each widget in the row /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols); /*/// #### nk_layout_row_begin /// Starts a new dynamic or fixed row with given height and columns. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols); /*/// #### nk_layout_row_push /// Specifies either window ratio or width of a single column /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_push(struct nk_context*, float value); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __value__ | either a window ratio or fixed width depending on @fmt in previous `nk_layout_row_begin` call */ NK_API void nk_layout_row_push(struct nk_context*, float value); /*/// #### nk_layout_row_end /// Finished previously started row /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_row_end(struct nk_context*); /*/// #### nk_layout_row /// Specifies row columns in array as either window ratio or size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row(struct nk_context*, enum nk_layout_format, float height, int cols, const float *ratio); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widget inside row */ NK_API void nk_layout_row(struct nk_context*, enum nk_layout_format, float height, int cols, const float *ratio); /*/// #### nk_layout_row_template_begin /// Begins the row template declaration /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_begin(struct nk_context*, float row_height); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting */ NK_API void nk_layout_row_template_begin(struct nk_context*, float row_height); /*/// #### nk_layout_row_template_push_dynamic /// Adds a dynamic column that dynamically grows and can go to zero if not enough space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_dynamic(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __height__ | Holds height of each widget in row or zero for auto layouting */ NK_API void nk_layout_row_template_push_dynamic(struct nk_context*); /*/// #### nk_layout_row_template_push_variable /// Adds a variable column that dynamically grows but does not shrink below specified pixel width /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_variable(struct nk_context*, float min_width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __width__ | Holds the minimum pixel width the next column must always be */ NK_API void nk_layout_row_template_push_variable(struct nk_context*, float min_width); /*/// #### nk_layout_row_template_push_static /// Adds a static column that does not grow and will always have the same size /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_push_static(struct nk_context*, float width); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __width__ | Holds the absolute pixel width value the next column must be */ NK_API void nk_layout_row_template_push_static(struct nk_context*, float width); /*/// #### nk_layout_row_template_end /// Marks the end of the row template /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_row_template_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` */ NK_API void nk_layout_row_template_end(struct nk_context*); /*/// #### nk_layout_space_begin /// Begins a new layouting space that allows to specify each widgets position and size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_begin(struct nk_context*, enum nk_layout_format, float height, int widget_count); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_begin_xxx` /// __fmt__ | Either `NK_DYNAMIC` for window ratio or `NK_STATIC` for fixed size columns /// __height__ | Holds height of each widget in row or zero for auto layouting /// __columns__ | Number of widgets inside row */ NK_API void nk_layout_space_begin(struct nk_context*, enum nk_layout_format, float height, int widget_count); /*/// #### nk_layout_space_push /// Pushes position and size of the next widget in own coordinate space either as pixel or ratio /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_push(struct nk_context *ctx, struct nk_rect bounds); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Position and size in laoyut space local coordinates */ NK_API void nk_layout_space_push(struct nk_context*, struct nk_rect bounds); /*/// #### nk_layout_space_end /// Marks the end of the layout space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_layout_space_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` */ NK_API void nk_layout_space_end(struct nk_context*); /*/// #### nk_layout_space_bounds /// Utility function to calculate total space allocated for `nk_layout_space` /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_bounds(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// /// Returns `nk_rect` holding the total space allocated */ NK_API struct nk_rect nk_layout_space_bounds(struct nk_context*); /*/// #### nk_layout_space_to_screen /// Converts vector from nk_layout_space coordinate space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_layout_space_to_screen(struct nk_context*, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __vec__ | Position to convert from layout space into screen coordinate space /// /// Returns transformed `nk_vec2` in screen space coordinates */ NK_API struct nk_vec2 nk_layout_space_to_screen(struct nk_context*, struct nk_vec2); /*/// #### nk_layout_space_to_local /// Converts vector from layout space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_vec2 nk_layout_space_to_local(struct nk_context*, struct nk_vec2); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __vec__ | Position to convert from screen space into layout coordinate space /// /// Returns transformed `nk_vec2` in layout space coordinates */ NK_API struct nk_vec2 nk_layout_space_to_local(struct nk_context*, struct nk_vec2); /*/// #### nk_layout_space_rect_to_screen /// Converts rectangle from screen space into layout space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_rect_to_screen(struct nk_context*, struct nk_rect); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Rectangle to convert from layout space into screen space /// /// Returns transformed `nk_rect` in screen space coordinates */ NK_API struct nk_rect nk_layout_space_rect_to_screen(struct nk_context*, struct nk_rect); /*/// #### nk_layout_space_rect_to_local /// Converts rectangle from layout space into screen space /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_rect nk_layout_space_rect_to_local(struct nk_context*, struct nk_rect); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after call `nk_layout_space_begin` /// __bounds__ | Rectangle to convert from layout space into screen space /// /// Returns transformed `nk_rect` in layout space coordinates */ NK_API struct nk_rect nk_layout_space_rect_to_local(struct nk_context*, struct nk_rect); /* ============================================================================= * * GROUP * * ============================================================================= /// ### Groups /// Groups are basically windows inside windows. They allow to subdivide space /// in a window to layout widgets as a group. Almost all more complex widget /// layouting requirements can be solved using groups and basic layouting /// fuctionality. Groups just like windows are identified by an unique name and /// internally keep track of scrollbar offsets by default. However additional /// versions are provided to directly manage the scrollbar. /// /// #### Usage /// To create a group you have to call one of the three `nk_group_begin_xxx` /// functions to start group declarations and `nk_group_end` at the end. Furthermore it /// is required to check the return value of `nk_group_begin_xxx` and only process /// widgets inside the window if the value is not 0. /// Nesting groups is possible and even encouraged since many layouting schemes /// can only be achieved by nesting. Groups, unlike windows, need `nk_group_end` /// to be only called if the corosponding `nk_group_begin_xxx` call does not return 0: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_group_begin_xxx(ctx, ...) { /// // [... widgets ...] /// nk_group_end(ctx); /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// In the grand concept groups can be called after starting a window /// with `nk_begin_xxx` and before calling `nk_end`: /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // Input /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// // /// // Window /// if (nk_begin_xxx(...) { /// // [...widgets...] /// nk_layout_row_dynamic(...); /// if (nk_group_begin_xxx(ctx, ...) { /// //[... widgets ...] /// nk_group_end(ctx); /// } /// } /// nk_end(ctx); /// // /// // Draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// #### Reference /// Function | Description /// --------------------------------|------------------------------------------- /// nk_group_begin | Start a new group with internal scrollbar handling /// nk_group_begin_titled | Start a new group with separeted name and title and internal scrollbar handling /// nk_group_end | Ends a group. Should only be called if nk_group_begin returned non-zero /// nk_group_scrolled_offset_begin | Start a new group with manual separated handling of scrollbar x- and y-offset /// nk_group_scrolled_begin | Start a new group with manual scrollbar handling /// nk_group_scrolled_end | Ends a group with manual scrollbar handling. Should only be called if nk_group_begin returned non-zero /// nk_group_get_scroll | Gets the scroll offset for the given group /// nk_group_set_scroll | Sets the scroll offset for the given group */ /*/// #### nk_group_begin /// Starts a new widget group. Requires a previous layouting function to specify a pos/size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_begin(struct nk_context*, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __title__ | Must be an unique identifier for this group that is also used for the group header /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_begin(struct nk_context*, const char *title, nk_flags); /*/// #### nk_group_begin_titled /// Starts a new widget group. Requires a previous layouting function to specify a pos/size. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_begin_titled(struct nk_context*, const char *name, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | Must be an unique identifier for this group /// __title__ | Group header title /// __flags__ | Window flags defined in the nk_panel_flags section with a number of different group behaviors /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_begin_titled(struct nk_context*, const char *name, const char *title, nk_flags); /*/// #### nk_group_end /// Ends a widget group /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_group_end(struct nk_context*); /*/// #### nk_group_scrolled_offset_begin /// starts a new widget group. requires a previous layouting function to specify /// a size. Does not keep track of scrollbar. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_scrolled_offset_begin(struct nk_context*, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __x_offset__| Scrollbar x-offset to offset all widgets inside the group horizontally. /// __y_offset__| Scrollbar y-offset to offset all widgets inside the group vertically /// __title__ | Window unique group title used to both identify and display in the group header /// __flags__ | Window flags from the nk_panel_flags section /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_scrolled_offset_begin(struct nk_context*, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags); /*/// #### nk_group_scrolled_begin /// Starts a new widget group. requires a previous /// layouting function to specify a size. Does not keep track of scrollbar. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_group_scrolled_begin(struct nk_context*, struct nk_scroll *off, const char *title, nk_flags); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __off__ | Both x- and y- scroll offset. Allows for manual scrollbar control /// __title__ | Window unique group title used to both identify and display in the group header /// __flags__ | Window flags from nk_panel_flags section /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_group_scrolled_begin(struct nk_context*, struct nk_scroll *off, const char *title, nk_flags); /*/// #### nk_group_scrolled_end /// Ends a widget group after calling nk_group_scrolled_offset_begin or nk_group_scrolled_begin. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_scrolled_end(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct */ NK_API void nk_group_scrolled_end(struct nk_context*); /*/// #### nk_group_get_scroll /// Gets the scroll position of the given group. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_get_scroll(struct nk_context*, const char *id, nk_uint *x_offset, nk_uint *y_offset); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | The id of the group to get the scroll position of /// __x_offset__ | A pointer to the x offset output (or NULL to ignore) /// __y_offset__ | A pointer to the y offset output (or NULL to ignore) */ NK_API void nk_group_get_scroll(struct nk_context*, const char *id, nk_uint *x_offset, nk_uint *y_offset); /*/// #### nk_group_set_scroll /// Sets the scroll position of the given group. /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_group_set_scroll(struct nk_context*, const char *id, nk_uint x_offset, nk_uint y_offset); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// -------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __id__ | The id of the group to scroll /// __x_offset__ | The x offset to scroll to /// __y_offset__ | The y offset to scroll to */ NK_API void nk_group_set_scroll(struct nk_context*, const char *id, nk_uint x_offset, nk_uint y_offset); /* ============================================================================= * * TREE * * ============================================================================= /// ### Tree /// Trees represent two different concept. First the concept of a collapsable /// UI section that can be either in a hidden or visibile state. They allow the UI /// user to selectively minimize the current set of visible UI to comprehend. /// The second concept are tree widgets for visual UI representation of trees.

/// /// Trees thereby can be nested for tree representations and multiple nested /// collapsable UI sections. All trees are started by calling of the /// `nk_tree_xxx_push_tree` functions and ended by calling one of the /// `nk_tree_xxx_pop_xxx()` functions. Each starting functions takes a title label /// and optionally an image to be displayed and the initial collapse state from /// the nk_collapse_states section.

/// /// The runtime state of the tree is either stored outside the library by the caller /// or inside which requires a unique ID. The unique ID can either be generated /// automatically from `__FILE__` and `__LINE__` with function `nk_tree_push`, /// by `__FILE__` and a user provided ID generated for example by loop index with /// function `nk_tree_push_id` or completely provided from outside by user with /// function `nk_tree_push_hashed`. /// /// #### Usage /// To create a tree you have to call one of the seven `nk_tree_xxx_push_xxx` /// functions to start a collapsable UI section and `nk_tree_xxx_pop` to mark the /// end. /// Each starting function will either return `false(0)` if the tree is collapsed /// or hidden and therefore does not need to be filled with content or `true(1)` /// if visible and required to be filled. /// /// !!! Note /// The tree header does not require and layouting function and instead /// calculates a auto height based on the currently used font size /// /// The tree ending functions only need to be called if the tree content is /// actually visible. So make sure the tree push function is guarded by `if` /// and the pop call is only taken if the tree is visible. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// if (nk_tree_push(ctx, NK_TREE_TAB, "Tree", NK_MINIMIZED)) { /// nk_layout_row_dynamic(...); /// nk_widget(...); /// nk_tree_pop(ctx); /// } /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// ----------------------------|------------------------------------------- /// nk_tree_push | Start a collapsable UI section with internal state management /// nk_tree_push_id | Start a collapsable UI section with internal state management callable in a look /// nk_tree_push_hashed | Start a collapsable UI section with internal state management with full control over internal unique ID use to store state /// nk_tree_image_push | Start a collapsable UI section with image and label header /// nk_tree_image_push_id | Start a collapsable UI section with image and label header and internal state management callable in a look /// nk_tree_image_push_hashed | Start a collapsable UI section with image and label header and internal state management with full control over internal unique ID use to store state /// nk_tree_pop | Ends a collapsable UI section // /// nk_tree_state_push | Start a collapsable UI section with external state management /// nk_tree_state_image_push | Start a collapsable UI section with image and label header and external state management /// nk_tree_state_pop | Ends a collapsabale UI section /// /// #### nk_tree_type /// Flag | Description /// ----------------|---------------------------------------- /// NK_TREE_NODE | Highlighted tree header to mark a collapsable UI section /// NK_TREE_TAB | Non-highighted tree header closer to tree representations */ /*/// #### nk_tree_push /// Starts a collapsable UI section with internal state management /// !!! WARNING /// To keep track of the runtime tree collapsable state this function uses /// defines `__FILE__` and `__LINE__` to generate a unique ID. If you want /// to call this function in a loop please use `nk_tree_push_id` or /// `nk_tree_push_hashed` instead. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_push(ctx, type, title, state) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_push(ctx, type, title, state) nk_tree_push_hashed(ctx, type, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) /*/// #### nk_tree_push_id /// Starts a collapsable UI section with internal state management callable in a look /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_push_id(ctx, type, title, state, id) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __id__ | Loop counter index if this function is called in a loop /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_push_id(ctx, type, title, state, id) nk_tree_push_hashed(ctx, type, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) /*/// #### nk_tree_push_hashed /// Start a collapsable UI section with internal state management with full /// control over internal unique ID used to store state /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __hash__ | Memory block or string to generate the ID from /// __len__ | Size of passed memory block or string in __hash__ /// __seed__ | Seeding value if this function is called in a loop or default to `0` /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /*/// #### nk_tree_image_push /// Start a collapsable UI section with image and label header /// !!! WARNING /// To keep track of the runtime tree collapsable state this function uses /// defines `__FILE__` and `__LINE__` to generate a unique ID. If you want /// to call this function in a loop please use `nk_tree_image_push_id` or /// `nk_tree_image_push_hashed` instead. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_image_push(ctx, type, img, title, state) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_image_push(ctx, type, img, title, state) nk_tree_image_push_hashed(ctx, type, img, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) /*/// #### nk_tree_image_push_id /// Start a collapsable UI section with image and label header and internal state /// management callable in a look /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// #define nk_tree_image_push_id(ctx, type, img, title, state, id) /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __id__ | Loop counter index if this function is called in a loop /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ #define nk_tree_image_push_id(ctx, type, img, title, state, id) nk_tree_image_push_hashed(ctx, type, img, title, state, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) /*/// #### nk_tree_image_push_hashed /// Start a collapsable UI section with internal state management with full /// control over internal unique ID used to store state /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __img__ | Image to display inside the header on the left of the label /// __title__ | Label printed in the tree header /// __state__ | Initial tree state value out of nk_collapse_states /// __hash__ | Memory block or string to generate the ID from /// __len__ | Size of passed memory block or string in __hash__ /// __seed__ | Seeding value if this function is called in a loop or default to `0` /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed); /*/// #### nk_tree_pop /// Ends a collapsabale UI section /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_tree_pop(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` */ NK_API void nk_tree_pop(struct nk_context*); /*/// #### nk_tree_state_push /// Start a collapsable UI section with external state management /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_state_push(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states *state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Persistent state to update /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_state_push(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states *state); /*/// #### nk_tree_state_image_push /// Start a collapsable UI section with image and label header and external state management /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_tree_state_image_push(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states *state); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` /// __img__ | Image to display inside the header on the left of the label /// __type__ | Value from the nk_tree_type section to visually mark a tree node header as either a collapseable UI section or tree node /// __title__ | Label printed in the tree header /// __state__ | Persistent state to update /// /// Returns `true(1)` if visible and fillable with widgets or `false(0)` otherwise */ NK_API int nk_tree_state_image_push(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states *state); /*/// #### nk_tree_state_pop /// Ends a collapsabale UI section /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_tree_state_pop(struct nk_context*); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// ------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling `nk_tree_xxx_push_xxx` */ NK_API void nk_tree_state_pop(struct nk_context*); #define nk_tree_element_push(ctx, type, title, state, sel) nk_tree_element_push_hashed(ctx, type, title, state, sel, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),__LINE__) #define nk_tree_element_push_id(ctx, type, title, state, sel, id) nk_tree_element_push_hashed(ctx, type, title, state, sel, NK_FILE_LINE,nk_strlen(NK_FILE_LINE),id) NK_API int nk_tree_element_push_hashed(struct nk_context*, enum nk_tree_type, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int seed); NK_API int nk_tree_element_image_push_hashed(struct nk_context*, enum nk_tree_type, struct nk_image, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len,int seed); NK_API void nk_tree_element_pop(struct nk_context*); /* ============================================================================= * * LIST VIEW * * ============================================================================= */ struct nk_list_view { /* public: */ int begin, end, count; /* private: */ int total_height; struct nk_context *ctx; nk_uint *scroll_pointer; nk_uint scroll_value; }; NK_API int nk_list_view_begin(struct nk_context*, struct nk_list_view *out, const char *id, nk_flags, int row_height, int row_count); NK_API void nk_list_view_end(struct nk_list_view*); /* ============================================================================= * * WIDGET * * ============================================================================= */ enum nk_widget_layout_states { NK_WIDGET_INVALID, /* The widget cannot be seen and is completely out of view */ NK_WIDGET_VALID, /* The widget is completely inside the window and can be updated and drawn */ NK_WIDGET_ROM /* The widget is partially visible and cannot be updated */ }; enum nk_widget_states { NK_WIDGET_STATE_MODIFIED = NK_FLAG(1), NK_WIDGET_STATE_INACTIVE = NK_FLAG(2), /* widget is neither active nor hovered */ NK_WIDGET_STATE_ENTERED = NK_FLAG(3), /* widget has been hovered on the current frame */ NK_WIDGET_STATE_HOVER = NK_FLAG(4), /* widget is being hovered */ NK_WIDGET_STATE_ACTIVED = NK_FLAG(5),/* widget is currently activated */ NK_WIDGET_STATE_LEFT = NK_FLAG(6), /* widget is from this frame on not hovered anymore */ NK_WIDGET_STATE_HOVERED = NK_WIDGET_STATE_HOVER|NK_WIDGET_STATE_MODIFIED, /* widget is being hovered */ NK_WIDGET_STATE_ACTIVE = NK_WIDGET_STATE_ACTIVED|NK_WIDGET_STATE_MODIFIED /* widget is currently activated */ }; NK_API enum nk_widget_layout_states nk_widget(struct nk_rect*, const struct nk_context*); NK_API enum nk_widget_layout_states nk_widget_fitting(struct nk_rect*, struct nk_context*, struct nk_vec2); NK_API struct nk_rect nk_widget_bounds(struct nk_context*); NK_API struct nk_vec2 nk_widget_position(struct nk_context*); NK_API struct nk_vec2 nk_widget_size(struct nk_context*); NK_API float nk_widget_width(struct nk_context*); NK_API float nk_widget_height(struct nk_context*); NK_API int nk_widget_is_hovered(struct nk_context*); NK_API int nk_widget_is_mouse_clicked(struct nk_context*, enum nk_buttons); NK_API int nk_widget_has_mouse_click_down(struct nk_context*, enum nk_buttons, int down); NK_API void nk_spacing(struct nk_context*, int cols); /* ============================================================================= * * TEXT * * ============================================================================= */ enum nk_text_align { NK_TEXT_ALIGN_LEFT = 0x01, NK_TEXT_ALIGN_CENTERED = 0x02, NK_TEXT_ALIGN_RIGHT = 0x04, NK_TEXT_ALIGN_TOP = 0x08, NK_TEXT_ALIGN_MIDDLE = 0x10, NK_TEXT_ALIGN_BOTTOM = 0x20 }; enum nk_text_alignment { NK_TEXT_LEFT = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_LEFT, NK_TEXT_CENTERED = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_CENTERED, NK_TEXT_RIGHT = NK_TEXT_ALIGN_MIDDLE|NK_TEXT_ALIGN_RIGHT }; NK_API void nk_text(struct nk_context*, const char*, int, nk_flags); NK_API void nk_text_colored(struct nk_context*, const char*, int, nk_flags, struct nk_color); NK_API void nk_text_wrap(struct nk_context*, const char*, int); NK_API void nk_text_wrap_colored(struct nk_context*, const char*, int, struct nk_color); NK_API void nk_label(struct nk_context*, const char*, nk_flags align); NK_API void nk_label_colored(struct nk_context*, const char*, nk_flags align, struct nk_color); NK_API void nk_label_wrap(struct nk_context*, const char*); NK_API void nk_label_colored_wrap(struct nk_context*, const char*, struct nk_color); NK_API void nk_image(struct nk_context*, struct nk_image); NK_API void nk_image_color(struct nk_context*, struct nk_image, struct nk_color); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_labelf(struct nk_context*, nk_flags, NK_PRINTF_FORMAT_STRING const char*, ...) NK_PRINTF_VARARG_FUNC(3); NK_API void nk_labelf_colored(struct nk_context*, nk_flags, struct nk_color, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(4); NK_API void nk_labelf_wrap(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(2); NK_API void nk_labelf_colored_wrap(struct nk_context*, struct nk_color, NK_PRINTF_FORMAT_STRING const char*,...) NK_PRINTF_VARARG_FUNC(3); NK_API void nk_labelfv(struct nk_context*, nk_flags, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(3); NK_API void nk_labelfv_colored(struct nk_context*, nk_flags, struct nk_color, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(4); NK_API void nk_labelfv_wrap(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(2); NK_API void nk_labelfv_colored_wrap(struct nk_context*, struct nk_color, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(3); NK_API void nk_value_bool(struct nk_context*, const char *prefix, int); NK_API void nk_value_int(struct nk_context*, const char *prefix, int); NK_API void nk_value_uint(struct nk_context*, const char *prefix, unsigned int); NK_API void nk_value_float(struct nk_context*, const char *prefix, float); NK_API void nk_value_color_byte(struct nk_context*, const char *prefix, struct nk_color); NK_API void nk_value_color_float(struct nk_context*, const char *prefix, struct nk_color); NK_API void nk_value_color_hex(struct nk_context*, const char *prefix, struct nk_color); #endif /* ============================================================================= * * BUTTON * * ============================================================================= */ NK_API int nk_button_text(struct nk_context*, const char *title, int len); NK_API int nk_button_label(struct nk_context*, const char *title); NK_API int nk_button_color(struct nk_context*, struct nk_color); NK_API int nk_button_symbol(struct nk_context*, enum nk_symbol_type); NK_API int nk_button_image(struct nk_context*, struct nk_image img); NK_API int nk_button_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags text_alignment); NK_API int nk_button_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_button_image_label(struct nk_context*, struct nk_image img, const char*, nk_flags text_alignment); NK_API int nk_button_image_text(struct nk_context*, struct nk_image img, const char*, int, nk_flags alignment); NK_API int nk_button_text_styled(struct nk_context*, const struct nk_style_button*, const char *title, int len); NK_API int nk_button_label_styled(struct nk_context*, const struct nk_style_button*, const char *title); NK_API int nk_button_symbol_styled(struct nk_context*, const struct nk_style_button*, enum nk_symbol_type); NK_API int nk_button_image_styled(struct nk_context*, const struct nk_style_button*, struct nk_image img); NK_API int nk_button_symbol_text_styled(struct nk_context*,const struct nk_style_button*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_button_symbol_label_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *title, nk_flags align); NK_API int nk_button_image_label_styled(struct nk_context*,const struct nk_style_button*, struct nk_image img, const char*, nk_flags text_alignment); NK_API int nk_button_image_text_styled(struct nk_context*,const struct nk_style_button*, struct nk_image img, const char*, int, nk_flags alignment); NK_API void nk_button_set_behavior(struct nk_context*, enum nk_button_behavior); NK_API int nk_button_push_behavior(struct nk_context*, enum nk_button_behavior); NK_API int nk_button_pop_behavior(struct nk_context*); /* ============================================================================= * * CHECKBOX * * ============================================================================= */ NK_API int nk_check_label(struct nk_context*, const char*, int active); NK_API int nk_check_text(struct nk_context*, const char*, int,int active); NK_API unsigned nk_check_flags_label(struct nk_context*, const char*, unsigned int flags, unsigned int value); NK_API unsigned nk_check_flags_text(struct nk_context*, const char*, int, unsigned int flags, unsigned int value); NK_API int nk_checkbox_label(struct nk_context*, const char*, int *active); NK_API int nk_checkbox_text(struct nk_context*, const char*, int, int *active); NK_API int nk_checkbox_flags_label(struct nk_context*, const char*, unsigned int *flags, unsigned int value); NK_API int nk_checkbox_flags_text(struct nk_context*, const char*, int, unsigned int *flags, unsigned int value); /* ============================================================================= * * RADIO BUTTON * * ============================================================================= */ NK_API int nk_radio_label(struct nk_context*, const char*, int *active); NK_API int nk_radio_text(struct nk_context*, const char*, int, int *active); NK_API int nk_option_label(struct nk_context*, const char*, int active); NK_API int nk_option_text(struct nk_context*, const char*, int, int active); /* ============================================================================= * * SELECTABLE * * ============================================================================= */ NK_API int nk_selectable_label(struct nk_context*, const char*, nk_flags align, int *value); NK_API int nk_selectable_text(struct nk_context*, const char*, int, nk_flags align, int *value); NK_API int nk_selectable_image_label(struct nk_context*,struct nk_image, const char*, nk_flags align, int *value); NK_API int nk_selectable_image_text(struct nk_context*,struct nk_image, const char*, int, nk_flags align, int *value); NK_API int nk_selectable_symbol_label(struct nk_context*,enum nk_symbol_type, const char*, nk_flags align, int *value); NK_API int nk_selectable_symbol_text(struct nk_context*,enum nk_symbol_type, const char*, int, nk_flags align, int *value); NK_API int nk_select_label(struct nk_context*, const char*, nk_flags align, int value); NK_API int nk_select_text(struct nk_context*, const char*, int, nk_flags align, int value); NK_API int nk_select_image_label(struct nk_context*, struct nk_image,const char*, nk_flags align, int value); NK_API int nk_select_image_text(struct nk_context*, struct nk_image,const char*, int, nk_flags align, int value); NK_API int nk_select_symbol_label(struct nk_context*,enum nk_symbol_type, const char*, nk_flags align, int value); NK_API int nk_select_symbol_text(struct nk_context*,enum nk_symbol_type, const char*, int, nk_flags align, int value); /* ============================================================================= * * SLIDER * * ============================================================================= */ NK_API float nk_slide_float(struct nk_context*, float min, float val, float max, float step); NK_API int nk_slide_int(struct nk_context*, int min, int val, int max, int step); NK_API int nk_slider_float(struct nk_context*, float min, float *val, float max, float step); NK_API int nk_slider_int(struct nk_context*, int min, int *val, int max, int step); /* ============================================================================= * * PROGRESSBAR * * ============================================================================= */ NK_API int nk_progress(struct nk_context*, nk_size *cur, nk_size max, int modifyable); NK_API nk_size nk_prog(struct nk_context*, nk_size cur, nk_size max, int modifyable); /* ============================================================================= * * COLOR PICKER * * ============================================================================= */ NK_API struct nk_colorf nk_color_picker(struct nk_context*, struct nk_colorf, enum nk_color_format); NK_API int nk_color_pick(struct nk_context*, struct nk_colorf*, enum nk_color_format); /* ============================================================================= * * PROPERTIES * * ============================================================================= /// ### Properties /// Properties are the main value modification widgets in Nuklear. Changing a value /// can be achieved by dragging, adding/removing incremental steps on button click /// or by directly typing a number. /// /// #### Usage /// Each property requires a unique name for identifaction that is also used for /// displaying a label. If you want to use the same name multiple times make sure /// add a '#' before your name. The '#' will not be shown but will generate a /// unique ID. Each propery also takes in a minimum and maximum value. If you want /// to make use of the complete number range of a type just use the provided /// type limits from `limits.h`. For example `INT_MIN` and `INT_MAX` for /// `nk_property_int` and `nk_propertyi`. In additional each property takes in /// a increment value that will be added or subtracted if either the increment /// decrement button is clicked. Finally there is a value for increment per pixel /// dragged that is added or subtracted from the value. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int value = 0; /// struct nk_context ctx; /// nk_init_xxx(&ctx, ...); /// while (1) { /// // Input /// Event evt; /// nk_input_begin(&ctx); /// while (GetEvent(&evt)) { /// if (evt.type == MOUSE_MOVE) /// nk_input_motion(&ctx, evt.motion.x, evt.motion.y); /// else if (evt.type == [...]) { /// nk_input_xxx(...); /// } /// } /// nk_input_end(&ctx); /// // /// // Window /// if (nk_begin_xxx(...) { /// // Property /// nk_layout_row_dynamic(...); /// nk_property_int(ctx, "ID", INT_MIN, &value, INT_MAX, 1, 1); /// } /// nk_end(ctx); /// // /// // Draw /// const struct nk_command *cmd = 0; /// nk_foreach(cmd, &ctx) { /// switch (cmd->type) { /// case NK_COMMAND_LINE: /// your_draw_line_function(...) /// break; /// case NK_COMMAND_RECT /// your_draw_rect_function(...) /// break; /// case ...: /// // [...] /// } /// nk_clear(&ctx); /// } /// nk_free(&ctx); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// #### Reference /// Function | Description /// --------------------|------------------------------------------- /// nk_property_int | Integer property directly modifing a passed in value /// nk_property_float | Float property directly modifing a passed in value /// nk_property_double | Double property directly modifing a passed in value /// nk_propertyi | Integer property returning the modified int value /// nk_propertyf | Float property returning the modified float value /// nk_propertyd | Double property returning the modified double value /// */ /*/// #### nk_property_int /// Integer property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_int(struct nk_context *ctx, const char *name, int min, int *val, int max, int step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Integer pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_int(struct nk_context*, const char *name, int min, int *val, int max, int step, float inc_per_pixel); /*/// #### nk_property_float /// Float property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_float(struct nk_context *ctx, const char *name, float min, float *val, float max, float step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Float pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_float(struct nk_context*, const char *name, float min, float *val, float max, float step, float inc_per_pixel); /*/// #### nk_property_double /// Double property directly modifing a passed in value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// void nk_property_double(struct nk_context *ctx, const char *name, double min, double *val, double max, double step, double inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Double pointer to be modified /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging */ NK_API void nk_property_double(struct nk_context*, const char *name, double min, double *val, double max, double step, float inc_per_pixel); /*/// #### nk_propertyi /// Integer property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// int nk_propertyi(struct nk_context *ctx, const char *name, int min, int val, int max, int step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current integer value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified integer value */ NK_API int nk_propertyi(struct nk_context*, const char *name, int min, int val, int max, int step, float inc_per_pixel); /*/// #### nk_propertyf /// Float property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_propertyf(struct nk_context *ctx, const char *name, float min, float val, float max, float step, float inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current float value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified float value */ NK_API float nk_propertyf(struct nk_context*, const char *name, float min, float val, float max, float step, float inc_per_pixel); /*/// #### nk_propertyd /// Float property modifing a passed in value and returning the new value /// !!! WARNING /// To generate a unique property ID using the same label make sure to insert /// a `#` at the beginning. It will not be shown but guarantees correct behavior. /// /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c /// float nk_propertyd(struct nk_context *ctx, const char *name, double min, double val, double max, double step, double inc_per_pixel); /// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /// /// Parameter | Description /// --------------------|----------------------------------------------------------- /// __ctx__ | Must point to an previously initialized `nk_context` struct after calling a layouting function /// __name__ | String used both as a label as well as a unique identifier /// __min__ | Minimum value not allowed to be underflown /// __val__ | Current double value to be modified and returned /// __max__ | Maximum value not allowed to be overflown /// __step__ | Increment added and subtracted on increment and decrement button /// __inc_per_pixel__ | Value per pixel added or subtracted on dragging /// /// Returns the new modified double value */ NK_API double nk_propertyd(struct nk_context*, const char *name, double min, double val, double max, double step, float inc_per_pixel); /* ============================================================================= * * TEXT EDIT * * ============================================================================= */ enum nk_edit_flags { NK_EDIT_DEFAULT = 0, NK_EDIT_READ_ONLY = NK_FLAG(0), NK_EDIT_AUTO_SELECT = NK_FLAG(1), NK_EDIT_SIG_ENTER = NK_FLAG(2), NK_EDIT_ALLOW_TAB = NK_FLAG(3), NK_EDIT_NO_CURSOR = NK_FLAG(4), NK_EDIT_SELECTABLE = NK_FLAG(5), NK_EDIT_CLIPBOARD = NK_FLAG(6), NK_EDIT_CTRL_ENTER_NEWLINE = NK_FLAG(7), NK_EDIT_NO_HORIZONTAL_SCROLL = NK_FLAG(8), NK_EDIT_ALWAYS_INSERT_MODE = NK_FLAG(9), NK_EDIT_MULTILINE = NK_FLAG(10), NK_EDIT_GOTO_END_ON_ACTIVATE = NK_FLAG(11) }; enum nk_edit_types { NK_EDIT_SIMPLE = NK_EDIT_ALWAYS_INSERT_MODE, NK_EDIT_FIELD = NK_EDIT_SIMPLE|NK_EDIT_SELECTABLE|NK_EDIT_CLIPBOARD, NK_EDIT_BOX = NK_EDIT_ALWAYS_INSERT_MODE| NK_EDIT_SELECTABLE| NK_EDIT_MULTILINE|NK_EDIT_ALLOW_TAB|NK_EDIT_CLIPBOARD, NK_EDIT_EDITOR = NK_EDIT_SELECTABLE|NK_EDIT_MULTILINE|NK_EDIT_ALLOW_TAB| NK_EDIT_CLIPBOARD }; enum nk_edit_events { NK_EDIT_ACTIVE = NK_FLAG(0), /* edit widget is currently being modified */ NK_EDIT_INACTIVE = NK_FLAG(1), /* edit widget is not active and is not being modified */ NK_EDIT_ACTIVATED = NK_FLAG(2), /* edit widget went from state inactive to state active */ NK_EDIT_DEACTIVATED = NK_FLAG(3), /* edit widget went from state active to state inactive */ NK_EDIT_COMMITED = NK_FLAG(4) /* edit widget has received an enter and lost focus */ }; NK_API nk_flags nk_edit_string(struct nk_context*, nk_flags, char *buffer, int *len, int max, nk_plugin_filter); NK_API nk_flags nk_edit_string_zero_terminated(struct nk_context*, nk_flags, char *buffer, int max, nk_plugin_filter); NK_API nk_flags nk_edit_buffer(struct nk_context*, nk_flags, struct nk_text_edit*, nk_plugin_filter); NK_API void nk_edit_focus(struct nk_context*, nk_flags flags); NK_API void nk_edit_unfocus(struct nk_context*); /* ============================================================================= * * CHART * * ============================================================================= */ NK_API int nk_chart_begin(struct nk_context*, enum nk_chart_type, int num, float min, float max); NK_API int nk_chart_begin_colored(struct nk_context*, enum nk_chart_type, struct nk_color, struct nk_color active, int num, float min, float max); NK_API void nk_chart_add_slot(struct nk_context *ctx, const enum nk_chart_type, int count, float min_value, float max_value); NK_API void nk_chart_add_slot_colored(struct nk_context *ctx, const enum nk_chart_type, struct nk_color, struct nk_color active, int count, float min_value, float max_value); NK_API nk_flags nk_chart_push(struct nk_context*, float); NK_API nk_flags nk_chart_push_slot(struct nk_context*, float, int); NK_API void nk_chart_end(struct nk_context*); NK_API void nk_plot(struct nk_context*, enum nk_chart_type, const float *values, int count, int offset); NK_API void nk_plot_function(struct nk_context*, enum nk_chart_type, void *userdata, float(*value_getter)(void* user, int index), int count, int offset); /* ============================================================================= * * POPUP * * ============================================================================= */ NK_API int nk_popup_begin(struct nk_context*, enum nk_popup_type, const char*, nk_flags, struct nk_rect bounds); NK_API void nk_popup_close(struct nk_context*); NK_API void nk_popup_end(struct nk_context*); NK_API void nk_popup_get_scroll(struct nk_context*, nk_uint *offset_x, nk_uint *offset_y); NK_API void nk_popup_set_scroll(struct nk_context*, nk_uint offset_x, nk_uint offset_y); /* ============================================================================= * * COMBOBOX * * ============================================================================= */ NK_API int nk_combo(struct nk_context*, const char **items, int count, int selected, int item_height, struct nk_vec2 size); NK_API int nk_combo_separator(struct nk_context*, const char *items_separated_by_separator, int separator, int selected, int count, int item_height, struct nk_vec2 size); NK_API int nk_combo_string(struct nk_context*, const char *items_separated_by_zeros, int selected, int count, int item_height, struct nk_vec2 size); NK_API int nk_combo_callback(struct nk_context*, void(*item_getter)(void*, int, const char**), void *userdata, int selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox(struct nk_context*, const char **items, int count, int *selected, int item_height, struct nk_vec2 size); NK_API void nk_combobox_string(struct nk_context*, const char *items_separated_by_zeros, int *selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox_separator(struct nk_context*, const char *items_separated_by_separator, int separator,int *selected, int count, int item_height, struct nk_vec2 size); NK_API void nk_combobox_callback(struct nk_context*, void(*item_getter)(void*, int, const char**), void*, int *selected, int count, int item_height, struct nk_vec2 size); /* ============================================================================= * * ABSTRACT COMBOBOX * * ============================================================================= */ NK_API int nk_combo_begin_text(struct nk_context*, const char *selected, int, struct nk_vec2 size); NK_API int nk_combo_begin_label(struct nk_context*, const char *selected, struct nk_vec2 size); NK_API int nk_combo_begin_color(struct nk_context*, struct nk_color color, struct nk_vec2 size); NK_API int nk_combo_begin_symbol(struct nk_context*, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_symbol_label(struct nk_context*, const char *selected, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_symbol_text(struct nk_context*, const char *selected, int, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_combo_begin_image(struct nk_context*, struct nk_image img, struct nk_vec2 size); NK_API int nk_combo_begin_image_label(struct nk_context*, const char *selected, struct nk_image, struct nk_vec2 size); NK_API int nk_combo_begin_image_text(struct nk_context*, const char *selected, int, struct nk_image, struct nk_vec2 size); NK_API int nk_combo_item_label(struct nk_context*, const char*, nk_flags alignment); NK_API int nk_combo_item_text(struct nk_context*, const char*,int, nk_flags alignment); NK_API int nk_combo_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_combo_item_image_text(struct nk_context*, struct nk_image, const char*, int,nk_flags alignment); NK_API int nk_combo_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API int nk_combo_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API void nk_combo_close(struct nk_context*); NK_API void nk_combo_end(struct nk_context*); /* ============================================================================= * * CONTEXTUAL * * ============================================================================= */ NK_API int nk_contextual_begin(struct nk_context*, nk_flags, struct nk_vec2, struct nk_rect trigger_bounds); NK_API int nk_contextual_item_text(struct nk_context*, const char*, int,nk_flags align); NK_API int nk_contextual_item_label(struct nk_context*, const char*, nk_flags align); NK_API int nk_contextual_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_contextual_item_image_text(struct nk_context*, struct nk_image, const char*, int len, nk_flags alignment); NK_API int nk_contextual_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API int nk_contextual_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API void nk_contextual_close(struct nk_context*); NK_API void nk_contextual_end(struct nk_context*); /* ============================================================================= * * TOOLTIP * * ============================================================================= */ NK_API void nk_tooltip(struct nk_context*, const char*); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_tooltipf(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, ...) NK_PRINTF_VARARG_FUNC(2); NK_API void nk_tooltipfv(struct nk_context*, NK_PRINTF_FORMAT_STRING const char*, va_list) NK_PRINTF_VALIST_FUNC(2); #endif NK_API int nk_tooltip_begin(struct nk_context*, float width); NK_API void nk_tooltip_end(struct nk_context*); /* ============================================================================= * * MENU * * ============================================================================= */ NK_API void nk_menubar_begin(struct nk_context*); NK_API void nk_menubar_end(struct nk_context*); NK_API int nk_menu_begin_text(struct nk_context*, const char* title, int title_len, nk_flags align, struct nk_vec2 size); NK_API int nk_menu_begin_label(struct nk_context*, const char*, nk_flags align, struct nk_vec2 size); NK_API int nk_menu_begin_image(struct nk_context*, const char*, struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_image_text(struct nk_context*, const char*, int,nk_flags align,struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_image_label(struct nk_context*, const char*, nk_flags align,struct nk_image, struct nk_vec2 size); NK_API int nk_menu_begin_symbol(struct nk_context*, const char*, enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_begin_symbol_text(struct nk_context*, const char*, int,nk_flags align,enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_begin_symbol_label(struct nk_context*, const char*, nk_flags align,enum nk_symbol_type, struct nk_vec2 size); NK_API int nk_menu_item_text(struct nk_context*, const char*, int,nk_flags align); NK_API int nk_menu_item_label(struct nk_context*, const char*, nk_flags alignment); NK_API int nk_menu_item_image_label(struct nk_context*, struct nk_image, const char*, nk_flags alignment); NK_API int nk_menu_item_image_text(struct nk_context*, struct nk_image, const char*, int len, nk_flags alignment); NK_API int nk_menu_item_symbol_text(struct nk_context*, enum nk_symbol_type, const char*, int, nk_flags alignment); NK_API int nk_menu_item_symbol_label(struct nk_context*, enum nk_symbol_type, const char*, nk_flags alignment); NK_API void nk_menu_close(struct nk_context*); NK_API void nk_menu_end(struct nk_context*); /* ============================================================================= * * STYLE * * ============================================================================= */ enum nk_style_colors { NK_COLOR_TEXT, NK_COLOR_WINDOW, NK_COLOR_HEADER, NK_COLOR_BORDER, NK_COLOR_BUTTON, NK_COLOR_BUTTON_HOVER, NK_COLOR_BUTTON_ACTIVE, NK_COLOR_TOGGLE, NK_COLOR_TOGGLE_HOVER, NK_COLOR_TOGGLE_CURSOR, NK_COLOR_SELECT, NK_COLOR_SELECT_ACTIVE, NK_COLOR_SLIDER, NK_COLOR_SLIDER_CURSOR, NK_COLOR_SLIDER_CURSOR_HOVER, NK_COLOR_SLIDER_CURSOR_ACTIVE, NK_COLOR_PROPERTY, NK_COLOR_EDIT, NK_COLOR_EDIT_CURSOR, NK_COLOR_COMBO, NK_COLOR_CHART, NK_COLOR_CHART_COLOR, NK_COLOR_CHART_COLOR_HIGHLIGHT, NK_COLOR_SCROLLBAR, NK_COLOR_SCROLLBAR_CURSOR, NK_COLOR_SCROLLBAR_CURSOR_HOVER, NK_COLOR_SCROLLBAR_CURSOR_ACTIVE, NK_COLOR_TAB_HEADER, NK_COLOR_COUNT }; enum nk_style_cursor { NK_CURSOR_ARROW, NK_CURSOR_TEXT, NK_CURSOR_MOVE, NK_CURSOR_RESIZE_VERTICAL, NK_CURSOR_RESIZE_HORIZONTAL, NK_CURSOR_RESIZE_TOP_LEFT_DOWN_RIGHT, NK_CURSOR_RESIZE_TOP_RIGHT_DOWN_LEFT, NK_CURSOR_COUNT }; NK_API void nk_style_default(struct nk_context*); NK_API void nk_style_from_table(struct nk_context*, const struct nk_color*); NK_API void nk_style_load_cursor(struct nk_context*, enum nk_style_cursor, const struct nk_cursor*); NK_API void nk_style_load_all_cursors(struct nk_context*, struct nk_cursor*); NK_API const char* nk_style_get_color_by_name(enum nk_style_colors); NK_API void nk_style_set_font(struct nk_context*, const struct nk_user_font*); NK_API int nk_style_set_cursor(struct nk_context*, enum nk_style_cursor); NK_API void nk_style_show_cursor(struct nk_context*); NK_API void nk_style_hide_cursor(struct nk_context*); NK_API int nk_style_push_font(struct nk_context*, const struct nk_user_font*); NK_API int nk_style_push_float(struct nk_context*, float*, float); NK_API int nk_style_push_vec2(struct nk_context*, struct nk_vec2*, struct nk_vec2); NK_API int nk_style_push_style_item(struct nk_context*, struct nk_style_item*, struct nk_style_item); NK_API int nk_style_push_flags(struct nk_context*, nk_flags*, nk_flags); NK_API int nk_style_push_color(struct nk_context*, struct nk_color*, struct nk_color); NK_API int nk_style_pop_font(struct nk_context*); NK_API int nk_style_pop_float(struct nk_context*); NK_API int nk_style_pop_vec2(struct nk_context*); NK_API int nk_style_pop_style_item(struct nk_context*); NK_API int nk_style_pop_flags(struct nk_context*); NK_API int nk_style_pop_color(struct nk_context*); /* ============================================================================= * * COLOR * * ============================================================================= */ NK_API struct nk_color nk_rgb(int r, int g, int b); NK_API struct nk_color nk_rgb_iv(const int *rgb); NK_API struct nk_color nk_rgb_bv(const nk_byte* rgb); NK_API struct nk_color nk_rgb_f(float r, float g, float b); NK_API struct nk_color nk_rgb_fv(const float *rgb); NK_API struct nk_color nk_rgb_cf(struct nk_colorf c); NK_API struct nk_color nk_rgb_hex(const char *rgb); NK_API struct nk_color nk_rgba(int r, int g, int b, int a); NK_API struct nk_color nk_rgba_u32(nk_uint); NK_API struct nk_color nk_rgba_iv(const int *rgba); NK_API struct nk_color nk_rgba_bv(const nk_byte *rgba); NK_API struct nk_color nk_rgba_f(float r, float g, float b, float a); NK_API struct nk_color nk_rgba_fv(const float *rgba); NK_API struct nk_color nk_rgba_cf(struct nk_colorf c); NK_API struct nk_color nk_rgba_hex(const char *rgb); NK_API struct nk_colorf nk_hsva_colorf(float h, float s, float v, float a); NK_API struct nk_colorf nk_hsva_colorfv(float *c); NK_API void nk_colorf_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_colorf in); NK_API void nk_colorf_hsva_fv(float *hsva, struct nk_colorf in); NK_API struct nk_color nk_hsv(int h, int s, int v); NK_API struct nk_color nk_hsv_iv(const int *hsv); NK_API struct nk_color nk_hsv_bv(const nk_byte *hsv); NK_API struct nk_color nk_hsv_f(float h, float s, float v); NK_API struct nk_color nk_hsv_fv(const float *hsv); NK_API struct nk_color nk_hsva(int h, int s, int v, int a); NK_API struct nk_color nk_hsva_iv(const int *hsva); NK_API struct nk_color nk_hsva_bv(const nk_byte *hsva); NK_API struct nk_color nk_hsva_f(float h, float s, float v, float a); NK_API struct nk_color nk_hsva_fv(const float *hsva); /* color (conversion nuklear --> user) */ NK_API void nk_color_f(float *r, float *g, float *b, float *a, struct nk_color); NK_API void nk_color_fv(float *rgba_out, struct nk_color); NK_API struct nk_colorf nk_color_cf(struct nk_color); NK_API void nk_color_d(double *r, double *g, double *b, double *a, struct nk_color); NK_API void nk_color_dv(double *rgba_out, struct nk_color); NK_API nk_uint nk_color_u32(struct nk_color); NK_API void nk_color_hex_rgba(char *output, struct nk_color); NK_API void nk_color_hex_rgb(char *output, struct nk_color); NK_API void nk_color_hsv_i(int *out_h, int *out_s, int *out_v, struct nk_color); NK_API void nk_color_hsv_b(nk_byte *out_h, nk_byte *out_s, nk_byte *out_v, struct nk_color); NK_API void nk_color_hsv_iv(int *hsv_out, struct nk_color); NK_API void nk_color_hsv_bv(nk_byte *hsv_out, struct nk_color); NK_API void nk_color_hsv_f(float *out_h, float *out_s, float *out_v, struct nk_color); NK_API void nk_color_hsv_fv(float *hsv_out, struct nk_color); NK_API void nk_color_hsva_i(int *h, int *s, int *v, int *a, struct nk_color); NK_API void nk_color_hsva_b(nk_byte *h, nk_byte *s, nk_byte *v, nk_byte *a, struct nk_color); NK_API void nk_color_hsva_iv(int *hsva_out, struct nk_color); NK_API void nk_color_hsva_bv(nk_byte *hsva_out, struct nk_color); NK_API void nk_color_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_color); NK_API void nk_color_hsva_fv(float *hsva_out, struct nk_color); /* ============================================================================= * * IMAGE * * ============================================================================= */ NK_API nk_handle nk_handle_ptr(void*); NK_API nk_handle nk_handle_id(int); NK_API struct nk_image nk_image_handle(nk_handle); NK_API struct nk_image nk_image_ptr(void*); NK_API struct nk_image nk_image_id(int); NK_API int nk_image_is_subimage(const struct nk_image* img); NK_API struct nk_image nk_subimage_ptr(void*, unsigned short w, unsigned short h, struct nk_rect sub_region); NK_API struct nk_image nk_subimage_id(int, unsigned short w, unsigned short h, struct nk_rect sub_region); NK_API struct nk_image nk_subimage_handle(nk_handle, unsigned short w, unsigned short h, struct nk_rect sub_region); /* ============================================================================= * * MATH * * ============================================================================= */ NK_API nk_hash nk_murmur_hash(const void *key, int len, nk_hash seed); NK_API void nk_triangle_from_direction(struct nk_vec2 *result, struct nk_rect r, float pad_x, float pad_y, enum nk_heading); NK_API struct nk_vec2 nk_vec2(float x, float y); NK_API struct nk_vec2 nk_vec2i(int x, int y); NK_API struct nk_vec2 nk_vec2v(const float *xy); NK_API struct nk_vec2 nk_vec2iv(const int *xy); NK_API struct nk_rect nk_get_null_rect(void); NK_API struct nk_rect nk_rect(float x, float y, float w, float h); NK_API struct nk_rect nk_recti(int x, int y, int w, int h); NK_API struct nk_rect nk_recta(struct nk_vec2 pos, struct nk_vec2 size); NK_API struct nk_rect nk_rectv(const float *xywh); NK_API struct nk_rect nk_rectiv(const int *xywh); NK_API struct nk_vec2 nk_rect_pos(struct nk_rect); NK_API struct nk_vec2 nk_rect_size(struct nk_rect); /* ============================================================================= * * STRING * * ============================================================================= */ NK_API int nk_strlen(const char *str); NK_API int nk_stricmp(const char *s1, const char *s2); NK_API int nk_stricmpn(const char *s1, const char *s2, int n); NK_API int nk_strtoi(const char *str, const char **endptr); NK_API float nk_strtof(const char *str, const char **endptr); NK_API double nk_strtod(const char *str, const char **endptr); NK_API int nk_strfilter(const char *text, const char *regexp); NK_API int nk_strmatch_fuzzy_string(char const *str, char const *pattern, int *out_score); NK_API int nk_strmatch_fuzzy_text(const char *txt, int txt_len, const char *pattern, int *out_score); /* ============================================================================= * * UTF-8 * * ============================================================================= */ NK_API int nk_utf_decode(const char*, nk_rune*, int); NK_API int nk_utf_encode(nk_rune, char*, int); NK_API int nk_utf_len(const char*, int byte_len); NK_API const char* nk_utf_at(const char *buffer, int length, int index, nk_rune *unicode, int *len); /* =============================================================== * * FONT * * ===============================================================*/ /* Font handling in this library was designed to be quite customizable and lets you decide what you want to use and what you want to provide. There are three different ways to use the font atlas. The first two will use your font handling scheme and only requires essential data to run nuklear. The next slightly more advanced features is font handling with vertex buffer output. Finally the most complex API wise is using nuklear's font baking API. 1.) Using your own implementation without vertex buffer output -------------------------------------------------------------- So first up the easiest way to do font handling is by just providing a `nk_user_font` struct which only requires the height in pixel of the used font and a callback to calculate the width of a string. This way of handling fonts is best fitted for using the normal draw shape command API where you do all the text drawing yourself and the library does not require any kind of deeper knowledge about which font handling mechanism you use. IMPORTANT: the `nk_user_font` pointer provided to nuklear has to persist over the complete life time! I know this sucks but it is currently the only way to switch between fonts. float your_text_width_calculation(nk_handle handle, float height, const char *text, int len) { your_font_type *type = handle.ptr; float text_width = ...; return text_width; } struct nk_user_font font; font.userdata.ptr = &your_font_class_or_struct; font.height = your_font_height; font.width = your_text_width_calculation; struct nk_context ctx; nk_init_default(&ctx, &font); 2.) Using your own implementation with vertex buffer output -------------------------------------------------------------- While the first approach works fine if you don't want to use the optional vertex buffer output it is not enough if you do. To get font handling working for these cases you have to provide two additional parameters inside the `nk_user_font`. First a texture atlas handle used to draw text as subimages of a bigger font atlas texture and a callback to query a character's glyph information (offset, size, ...). So it is still possible to provide your own font and use the vertex buffer output. float your_text_width_calculation(nk_handle handle, float height, const char *text, int len) { your_font_type *type = handle.ptr; float text_width = ...; return text_width; } void query_your_font_glyph(nk_handle handle, float font_height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint) { your_font_type *type = handle.ptr; glyph.width = ...; glyph.height = ...; glyph.xadvance = ...; glyph.uv[0].x = ...; glyph.uv[0].y = ...; glyph.uv[1].x = ...; glyph.uv[1].y = ...; glyph.offset.x = ...; glyph.offset.y = ...; } struct nk_user_font font; font.userdata.ptr = &your_font_class_or_struct; font.height = your_font_height; font.width = your_text_width_calculation; font.query = query_your_font_glyph; font.texture.id = your_font_texture; struct nk_context ctx; nk_init_default(&ctx, &font); 3.) Nuklear font baker ------------------------------------ The final approach if you do not have a font handling functionality or don't want to use it in this library is by using the optional font baker. The font baker APIs can be used to create a font plus font atlas texture and can be used with or without the vertex buffer output. It still uses the `nk_user_font` struct and the two different approaches previously stated still work. The font baker is not located inside `nk_context` like all other systems since it can be understood as more of an extension to nuklear and does not really depend on any `nk_context` state. Font baker need to be initialized first by one of the nk_font_atlas_init_xxx functions. If you don't care about memory just call the default version `nk_font_atlas_init_default` which will allocate all memory from the standard library. If you want to control memory allocation but you don't care if the allocated memory is temporary and therefore can be freed directly after the baking process is over or permanent you can call `nk_font_atlas_init`. After successfully initializing the font baker you can add Truetype(.ttf) fonts from different sources like memory or from file by calling one of the `nk_font_atlas_add_xxx`. functions. Adding font will permanently store each font, font config and ttf memory block(!) inside the font atlas and allows to reuse the font atlas. If you don't want to reuse the font baker by for example adding additional fonts you can call `nk_font_atlas_cleanup` after the baking process is over (after calling nk_font_atlas_end). As soon as you added all fonts you wanted you can now start the baking process for every selected glyph to image by calling `nk_font_atlas_bake`. The baking process returns image memory, width and height which can be used to either create your own image object or upload it to any graphics library. No matter which case you finally have to call `nk_font_atlas_end` which will free all temporary memory including the font atlas image so make sure you created our texture beforehand. `nk_font_atlas_end` requires a handle to your font texture or object and optionally fills a `struct nk_draw_null_texture` which can be used for the optional vertex output. If you don't want it just set the argument to `NULL`. At this point you are done and if you don't want to reuse the font atlas you can call `nk_font_atlas_cleanup` to free all truetype blobs and configuration memory. Finally if you don't use the font atlas and any of it's fonts anymore you need to call `nk_font_atlas_clear` to free all memory still being used. struct nk_font_atlas atlas; nk_font_atlas_init_default(&atlas); nk_font_atlas_begin(&atlas); nk_font *font = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font.ttf", 13, 0); nk_font *font2 = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font2.ttf", 16, 0); const void* img = nk_font_atlas_bake(&atlas, &img_width, &img_height, NK_FONT_ATLAS_RGBA32); nk_font_atlas_end(&atlas, nk_handle_id(texture), 0); struct nk_context ctx; nk_init_default(&ctx, &font->handle); while (1) { } nk_font_atlas_clear(&atlas); The font baker API is probably the most complex API inside this library and I would suggest reading some of my examples `example/` to get a grip on how to use the font atlas. There are a number of details I left out. For example how to merge fonts, configure a font with `nk_font_config` to use other languages, use another texture coordinate format and a lot more: struct nk_font_config cfg = nk_font_config(font_pixel_height); cfg.merge_mode = nk_false or nk_true; cfg.range = nk_font_korean_glyph_ranges(); cfg.coord_type = NK_COORD_PIXEL; nk_font *font = nk_font_atlas_add_from_file(&atlas, "Path/To/Your/TTF_Font.ttf", 13, &cfg); */ struct nk_user_font_glyph; typedef float(*nk_text_width_f)(nk_handle, float h, const char*, int len); typedef void(*nk_query_font_glyph_f)(nk_handle handle, float font_height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint); #if defined(NK_INCLUDE_VERTEX_BUFFER_OUTPUT) || defined(NK_INCLUDE_SOFTWARE_FONT) struct nk_user_font_glyph { struct nk_vec2 uv[2]; /* texture coordinates */ struct nk_vec2 offset; /* offset between top left and glyph */ float width, height; /* size of the glyph */ float xadvance; /* offset to the next glyph */ }; #endif struct nk_user_font { nk_handle userdata; /* user provided font handle */ float height; /* max height of the font */ nk_text_width_f width; /* font string width in pixel callback */ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT nk_query_font_glyph_f query; /* font glyph callback to query drawing info */ nk_handle texture; /* texture handle to the used font atlas or texture */ #endif }; #ifdef NK_INCLUDE_FONT_BAKING enum nk_font_coord_type { NK_COORD_UV, /* texture coordinates inside font glyphs are clamped between 0-1 */ NK_COORD_PIXEL /* texture coordinates inside font glyphs are in absolute pixel */ }; struct nk_font; struct nk_baked_font { float height; /* height of the font */ float ascent, descent; /* font glyphs ascent and descent */ nk_rune glyph_offset; /* glyph array offset inside the font glyph baking output array */ nk_rune glyph_count; /* number of glyphs of this font inside the glyph baking array output */ const nk_rune *ranges; /* font codepoint ranges as pairs of (from/to) and 0 as last element */ }; struct nk_font_config { struct nk_font_config *next; /* NOTE: only used internally */ void *ttf_blob; /* pointer to loaded TTF file memory block. * NOTE: not needed for nk_font_atlas_add_from_memory and nk_font_atlas_add_from_file. */ nk_size ttf_size; /* size of the loaded TTF file memory block * NOTE: not needed for nk_font_atlas_add_from_memory and nk_font_atlas_add_from_file. */ unsigned char ttf_data_owned_by_atlas; /* used inside font atlas: default to: 0*/ unsigned char merge_mode; /* merges this font into the last font */ unsigned char pixel_snap; /* align every character to pixel boundary (if true set oversample (1,1)) */ unsigned char oversample_v, oversample_h; /* rasterize at hight quality for sub-pixel position */ unsigned char padding[3]; float size; /* baked pixel height of the font */ enum nk_font_coord_type coord_type; /* texture coordinate format with either pixel or UV coordinates */ struct nk_vec2 spacing; /* extra pixel spacing between glyphs */ const nk_rune *range; /* list of unicode ranges (2 values per range, zero terminated) */ struct nk_baked_font *font; /* font to setup in the baking process: NOTE: not needed for font atlas */ nk_rune fallback_glyph; /* fallback glyph to use if a given rune is not found */ struct nk_font_config *n; struct nk_font_config *p; }; struct nk_font_glyph { nk_rune codepoint; float xadvance; float x0, y0, x1, y1, w, h; float u0, v0, u1, v1; }; struct nk_font { struct nk_font *next; struct nk_user_font handle; struct nk_baked_font info; float scale; struct nk_font_glyph *glyphs; const struct nk_font_glyph *fallback; nk_rune fallback_codepoint; nk_handle texture; struct nk_font_config *config; }; enum nk_font_atlas_format { NK_FONT_ATLAS_ALPHA8, NK_FONT_ATLAS_RGBA32 }; struct nk_font_atlas { void *pixel; int tex_width; int tex_height; struct nk_allocator permanent; struct nk_allocator temporary; struct nk_recti custom; struct nk_cursor cursors[NK_CURSOR_COUNT]; int glyph_count; struct nk_font_glyph *glyphs; struct nk_font *default_font; struct nk_font *fonts; struct nk_font_config *config; int font_num; }; /* some language glyph codepoint ranges */ NK_API const nk_rune *nk_font_default_glyph_ranges(void); NK_API const nk_rune *nk_font_chinese_glyph_ranges(void); NK_API const nk_rune *nk_font_cyrillic_glyph_ranges(void); NK_API const nk_rune *nk_font_korean_glyph_ranges(void); #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_font_atlas_init_default(struct nk_font_atlas*); #endif NK_API void nk_font_atlas_init(struct nk_font_atlas*, struct nk_allocator*); NK_API void nk_font_atlas_init_custom(struct nk_font_atlas*, struct nk_allocator *persistent, struct nk_allocator *transient); NK_API void nk_font_atlas_begin(struct nk_font_atlas*); NK_API struct nk_font_config nk_font_config(float pixel_height); NK_API struct nk_font *nk_font_atlas_add(struct nk_font_atlas*, const struct nk_font_config*); #ifdef NK_INCLUDE_DEFAULT_FONT NK_API struct nk_font* nk_font_atlas_add_default(struct nk_font_atlas*, float height, const struct nk_font_config*); #endif NK_API struct nk_font* nk_font_atlas_add_from_memory(struct nk_font_atlas *atlas, void *memory, nk_size size, float height, const struct nk_font_config *config); #ifdef NK_INCLUDE_STANDARD_IO NK_API struct nk_font* nk_font_atlas_add_from_file(struct nk_font_atlas *atlas, const char *file_path, float height, const struct nk_font_config*); #endif NK_API struct nk_font *nk_font_atlas_add_compressed(struct nk_font_atlas*, void *memory, nk_size size, float height, const struct nk_font_config*); NK_API struct nk_font* nk_font_atlas_add_compressed_base85(struct nk_font_atlas*, const char *data, float height, const struct nk_font_config *config); NK_API const void* nk_font_atlas_bake(struct nk_font_atlas*, int *width, int *height, enum nk_font_atlas_format); NK_API void nk_font_atlas_end(struct nk_font_atlas*, nk_handle tex, struct nk_draw_null_texture*); NK_API const struct nk_font_glyph* nk_font_find_glyph(struct nk_font*, nk_rune unicode); NK_API void nk_font_atlas_cleanup(struct nk_font_atlas *atlas); NK_API void nk_font_atlas_clear(struct nk_font_atlas*); #endif /* ============================================================== * * MEMORY BUFFER * * ===============================================================*/ /* A basic (double)-buffer with linear allocation and resetting as only freeing policy. The buffer's main purpose is to control all memory management inside the GUI toolkit and still leave memory control as much as possible in the hand of the user while also making sure the library is easy to use if not as much control is needed. In general all memory inside this library can be provided from the user in three different ways. The first way and the one providing most control is by just passing a fixed size memory block. In this case all control lies in the hand of the user since he can exactly control where the memory comes from and how much memory the library should consume. Of course using the fixed size API removes the ability to automatically resize a buffer if not enough memory is provided so you have to take over the resizing. While being a fixed sized buffer sounds quite limiting, it is very effective in this library since the actual memory consumption is quite stable and has a fixed upper bound for a lot of cases. If you don't want to think about how much memory the library should allocate at all time or have a very dynamic UI with unpredictable memory consumption habits but still want control over memory allocation you can use the dynamic allocator based API. The allocator consists of two callbacks for allocating and freeing memory and optional userdata so you can plugin your own allocator. The final and easiest way can be used by defining NK_INCLUDE_DEFAULT_ALLOCATOR which uses the standard library memory allocation functions malloc and free and takes over complete control over memory in this library. */ struct nk_memory_status { void *memory; unsigned int type; nk_size size; nk_size allocated; nk_size needed; nk_size calls; }; enum nk_allocation_type { NK_BUFFER_FIXED, NK_BUFFER_DYNAMIC }; enum nk_buffer_allocation_type { NK_BUFFER_FRONT, NK_BUFFER_BACK, NK_BUFFER_MAX }; struct nk_buffer_marker { int active; nk_size offset; }; struct nk_memory {void *ptr;nk_size size;}; struct nk_buffer { struct nk_buffer_marker marker[NK_BUFFER_MAX]; /* buffer marker to free a buffer to a certain offset */ struct nk_allocator pool; /* allocator callback for dynamic buffers */ enum nk_allocation_type type; /* memory management type */ struct nk_memory memory; /* memory and size of the current memory block */ float grow_factor; /* growing factor for dynamic memory management */ nk_size allocated; /* total amount of memory allocated */ nk_size needed; /* totally consumed memory given that enough memory is present */ nk_size calls; /* number of allocation calls */ nk_size size; /* current size of the buffer */ }; #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_buffer_init_default(struct nk_buffer*); #endif NK_API void nk_buffer_init(struct nk_buffer*, const struct nk_allocator*, nk_size size); NK_API void nk_buffer_init_fixed(struct nk_buffer*, void *memory, nk_size size); NK_API void nk_buffer_info(struct nk_memory_status*, struct nk_buffer*); NK_API void nk_buffer_push(struct nk_buffer*, enum nk_buffer_allocation_type type, const void *memory, nk_size size, nk_size align); NK_API void nk_buffer_mark(struct nk_buffer*, enum nk_buffer_allocation_type type); NK_API void nk_buffer_reset(struct nk_buffer*, enum nk_buffer_allocation_type type); NK_API void nk_buffer_clear(struct nk_buffer*); NK_API void nk_buffer_free(struct nk_buffer*); NK_API void *nk_buffer_memory(struct nk_buffer*); NK_API const void *nk_buffer_memory_const(const struct nk_buffer*); NK_API nk_size nk_buffer_total(struct nk_buffer*); /* ============================================================== * * STRING * * ===============================================================*/ /* Basic string buffer which is only used in context with the text editor * to manage and manipulate dynamic or fixed size string content. This is _NOT_ * the default string handling method. The only instance you should have any contact * with this API is if you interact with an `nk_text_edit` object inside one of the * copy and paste functions and even there only for more advanced cases. */ struct nk_str { struct nk_buffer buffer; int len; /* in codepoints/runes/glyphs */ }; #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_str_init_default(struct nk_str*); #endif NK_API void nk_str_init(struct nk_str*, const struct nk_allocator*, nk_size size); NK_API void nk_str_init_fixed(struct nk_str*, void *memory, nk_size size); NK_API void nk_str_clear(struct nk_str*); NK_API void nk_str_free(struct nk_str*); NK_API int nk_str_append_text_char(struct nk_str*, const char*, int); NK_API int nk_str_append_str_char(struct nk_str*, const char*); NK_API int nk_str_append_text_utf8(struct nk_str*, const char*, int); NK_API int nk_str_append_str_utf8(struct nk_str*, const char*); NK_API int nk_str_append_text_runes(struct nk_str*, const nk_rune*, int); NK_API int nk_str_append_str_runes(struct nk_str*, const nk_rune*); NK_API int nk_str_insert_at_char(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_at_rune(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_text_char(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_str_char(struct nk_str*, int pos, const char*); NK_API int nk_str_insert_text_utf8(struct nk_str*, int pos, const char*, int); NK_API int nk_str_insert_str_utf8(struct nk_str*, int pos, const char*); NK_API int nk_str_insert_text_runes(struct nk_str*, int pos, const nk_rune*, int); NK_API int nk_str_insert_str_runes(struct nk_str*, int pos, const nk_rune*); NK_API void nk_str_remove_chars(struct nk_str*, int len); NK_API void nk_str_remove_runes(struct nk_str *str, int len); NK_API void nk_str_delete_chars(struct nk_str*, int pos, int len); NK_API void nk_str_delete_runes(struct nk_str*, int pos, int len); NK_API char *nk_str_at_char(struct nk_str*, int pos); NK_API char *nk_str_at_rune(struct nk_str*, int pos, nk_rune *unicode, int *len); NK_API nk_rune nk_str_rune_at(const struct nk_str*, int pos); NK_API const char *nk_str_at_char_const(const struct nk_str*, int pos); NK_API const char *nk_str_at_const(const struct nk_str*, int pos, nk_rune *unicode, int *len); NK_API char *nk_str_get(struct nk_str*); NK_API const char *nk_str_get_const(const struct nk_str*); NK_API int nk_str_len(struct nk_str*); NK_API int nk_str_len_char(struct nk_str*); /*=============================================================== * * TEXT EDITOR * * ===============================================================*/ /* Editing text in this library is handled by either `nk_edit_string` or * `nk_edit_buffer`. But like almost everything in this library there are multiple * ways of doing it and a balance between control and ease of use with memory * as well as functionality controlled by flags. * * This library generally allows three different levels of memory control: * First of is the most basic way of just providing a simple char array with * string length. This method is probably the easiest way of handling simple * user text input. Main upside is complete control over memory while the biggest * downside in comparison with the other two approaches is missing undo/redo. * * For UIs that require undo/redo the second way was created. It is based on * a fixed size nk_text_edit struct, which has an internal undo/redo stack. * This is mainly useful if you want something more like a text editor but don't want * to have a dynamically growing buffer. * * The final way is using a dynamically growing nk_text_edit struct, which * has both a default version if you don't care where memory comes from and an * allocator version if you do. While the text editor is quite powerful for its * complexity I would not recommend editing gigabytes of data with it. * It is rather designed for uses cases which make sense for a GUI library not for * an full blown text editor. */ #ifndef NK_TEXTEDIT_UNDOSTATECOUNT #define NK_TEXTEDIT_UNDOSTATECOUNT 99 #endif #ifndef NK_TEXTEDIT_UNDOCHARCOUNT #define NK_TEXTEDIT_UNDOCHARCOUNT 999 #endif struct nk_text_edit; struct nk_clipboard { nk_handle userdata; nk_plugin_paste paste; nk_plugin_copy copy; }; struct nk_text_undo_record { int where; short insert_length; short delete_length; short char_storage; }; struct nk_text_undo_state { struct nk_text_undo_record undo_rec[NK_TEXTEDIT_UNDOSTATECOUNT]; nk_rune undo_char[NK_TEXTEDIT_UNDOCHARCOUNT]; short undo_point; short redo_point; short undo_char_point; short redo_char_point; }; enum nk_text_edit_type { NK_TEXT_EDIT_SINGLE_LINE, NK_TEXT_EDIT_MULTI_LINE }; enum nk_text_edit_mode { NK_TEXT_EDIT_MODE_VIEW, NK_TEXT_EDIT_MODE_INSERT, NK_TEXT_EDIT_MODE_REPLACE }; struct nk_text_edit { struct nk_clipboard clip; struct nk_str string; nk_plugin_filter filter; struct nk_vec2 scrollbar; int cursor; int select_start; int select_end; unsigned char mode; unsigned char cursor_at_end_of_line; unsigned char initialized; unsigned char has_preferred_x; unsigned char single_line; unsigned char active; unsigned char padding1; float preferred_x; struct nk_text_undo_state undo; }; /* filter function */ NK_API int nk_filter_default(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_ascii(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_float(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_decimal(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_hex(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_oct(const struct nk_text_edit*, nk_rune unicode); NK_API int nk_filter_binary(const struct nk_text_edit*, nk_rune unicode); /* text editor */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_textedit_init_default(struct nk_text_edit*); #endif NK_API void nk_textedit_init(struct nk_text_edit*, struct nk_allocator*, nk_size size); NK_API void nk_textedit_init_fixed(struct nk_text_edit*, void *memory, nk_size size); NK_API void nk_textedit_free(struct nk_text_edit*); NK_API void nk_textedit_text(struct nk_text_edit*, const char*, int total_len); NK_API void nk_textedit_delete(struct nk_text_edit*, int where, int len); NK_API void nk_textedit_delete_selection(struct nk_text_edit*); NK_API void nk_textedit_select_all(struct nk_text_edit*); NK_API int nk_textedit_cut(struct nk_text_edit*); NK_API int nk_textedit_paste(struct nk_text_edit*, char const*, int len); NK_API void nk_textedit_undo(struct nk_text_edit*); NK_API void nk_textedit_redo(struct nk_text_edit*); /* =============================================================== * * DRAWING * * ===============================================================*/ /* This library was designed to be render backend agnostic so it does not draw anything to screen. Instead all drawn shapes, widgets are made of, are buffered into memory and make up a command queue. Each frame therefore fills the command buffer with draw commands that then need to be executed by the user and his own render backend. After that the command buffer needs to be cleared and a new frame can be started. It is probably important to note that the command buffer is the main drawing API and the optional vertex buffer API only takes this format and converts it into a hardware accessible format. To use the command queue to draw your own widgets you can access the command buffer of each window by calling `nk_window_get_canvas` after previously having called `nk_begin`: void draw_red_rectangle_widget(struct nk_context *ctx) { struct nk_command_buffer *canvas; struct nk_input *input = &ctx->input; canvas = nk_window_get_canvas(ctx); struct nk_rect space; enum nk_widget_layout_states state; state = nk_widget(&space, ctx); if (!state) return; if (state != NK_WIDGET_ROM) update_your_widget_by_user_input(...); nk_fill_rect(canvas, space, 0, nk_rgb(255,0,0)); } if (nk_begin(...)) { nk_layout_row_dynamic(ctx, 25, 1); draw_red_rectangle_widget(ctx); } nk_end(..) Important to know if you want to create your own widgets is the `nk_widget` call. It allocates space on the panel reserved for this widget to be used, but also returns the state of the widget space. If your widget is not seen and does not have to be updated it is '0' and you can just return. If it only has to be drawn the state will be `NK_WIDGET_ROM` otherwise you can do both update and draw your widget. The reason for separating is to only draw and update what is actually necessary which is crucial for performance. */ enum nk_command_type { NK_COMMAND_NOP, NK_COMMAND_SCISSOR, NK_COMMAND_LINE, NK_COMMAND_CURVE, NK_COMMAND_RECT, NK_COMMAND_RECT_FILLED, NK_COMMAND_RECT_MULTI_COLOR, NK_COMMAND_CIRCLE, NK_COMMAND_CIRCLE_FILLED, NK_COMMAND_ARC, NK_COMMAND_ARC_FILLED, NK_COMMAND_TRIANGLE, NK_COMMAND_TRIANGLE_FILLED, NK_COMMAND_POLYGON, NK_COMMAND_POLYGON_FILLED, NK_COMMAND_POLYLINE, NK_COMMAND_TEXT, NK_COMMAND_IMAGE, NK_COMMAND_CUSTOM }; /* command base and header of every command inside the buffer */ struct nk_command { enum nk_command_type type; nk_size next; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; struct nk_command_scissor { struct nk_command header; short x, y; unsigned short w, h; }; struct nk_command_line { struct nk_command header; unsigned short line_thickness; struct nk_vec2i begin; struct nk_vec2i end; struct nk_color color; }; struct nk_command_curve { struct nk_command header; unsigned short line_thickness; struct nk_vec2i begin; struct nk_vec2i end; struct nk_vec2i ctrl[2]; struct nk_color color; }; struct nk_command_rect { struct nk_command header; unsigned short rounding; unsigned short line_thickness; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_rect_filled { struct nk_command header; unsigned short rounding; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_rect_multi_color { struct nk_command header; short x, y; unsigned short w, h; struct nk_color left; struct nk_color top; struct nk_color bottom; struct nk_color right; }; struct nk_command_triangle { struct nk_command header; unsigned short line_thickness; struct nk_vec2i a; struct nk_vec2i b; struct nk_vec2i c; struct nk_color color; }; struct nk_command_triangle_filled { struct nk_command header; struct nk_vec2i a; struct nk_vec2i b; struct nk_vec2i c; struct nk_color color; }; struct nk_command_circle { struct nk_command header; short x, y; unsigned short line_thickness; unsigned short w, h; struct nk_color color; }; struct nk_command_circle_filled { struct nk_command header; short x, y; unsigned short w, h; struct nk_color color; }; struct nk_command_arc { struct nk_command header; short cx, cy; unsigned short r; unsigned short line_thickness; float a[2]; struct nk_color color; }; struct nk_command_arc_filled { struct nk_command header; short cx, cy; unsigned short r; float a[2]; struct nk_color color; }; struct nk_command_polygon { struct nk_command header; struct nk_color color; unsigned short line_thickness; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_polygon_filled { struct nk_command header; struct nk_color color; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_polyline { struct nk_command header; struct nk_color color; unsigned short line_thickness; unsigned short point_count; struct nk_vec2i points[1]; }; struct nk_command_image { struct nk_command header; short x, y; unsigned short w, h; struct nk_image img; struct nk_color col; }; typedef void (*nk_command_custom_callback)(void *canvas, short x,short y, unsigned short w, unsigned short h, nk_handle callback_data); struct nk_command_custom { struct nk_command header; short x, y; unsigned short w, h; nk_handle callback_data; nk_command_custom_callback callback; }; struct nk_command_text { struct nk_command header; const struct nk_user_font *font; struct nk_color background; struct nk_color foreground; short x, y; unsigned short w, h; float height; int length; char string[1]; }; enum nk_command_clipping { NK_CLIPPING_OFF = nk_false, NK_CLIPPING_ON = nk_true }; struct nk_command_buffer { struct nk_buffer *base; struct nk_rect clip; int use_clipping; nk_handle userdata; nk_size begin, end, last; }; /* shape outlines */ NK_API void nk_stroke_line(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float line_thickness, struct nk_color); NK_API void nk_stroke_curve(struct nk_command_buffer*, float, float, float, float, float, float, float, float, float line_thickness, struct nk_color); NK_API void nk_stroke_rect(struct nk_command_buffer*, struct nk_rect, float rounding, float line_thickness, struct nk_color); NK_API void nk_stroke_circle(struct nk_command_buffer*, struct nk_rect, float line_thickness, struct nk_color); NK_API void nk_stroke_arc(struct nk_command_buffer*, float cx, float cy, float radius, float a_min, float a_max, float line_thickness, struct nk_color); NK_API void nk_stroke_triangle(struct nk_command_buffer*, float, float, float, float, float, float, float line_thichness, struct nk_color); NK_API void nk_stroke_polyline(struct nk_command_buffer*, float *points, int point_count, float line_thickness, struct nk_color col); NK_API void nk_stroke_polygon(struct nk_command_buffer*, float*, int point_count, float line_thickness, struct nk_color); /* filled shades */ NK_API void nk_fill_rect(struct nk_command_buffer*, struct nk_rect, float rounding, struct nk_color); NK_API void nk_fill_rect_multi_color(struct nk_command_buffer*, struct nk_rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom); NK_API void nk_fill_circle(struct nk_command_buffer*, struct nk_rect, struct nk_color); NK_API void nk_fill_arc(struct nk_command_buffer*, float cx, float cy, float radius, float a_min, float a_max, struct nk_color); NK_API void nk_fill_triangle(struct nk_command_buffer*, float x0, float y0, float x1, float y1, float x2, float y2, struct nk_color); NK_API void nk_fill_polygon(struct nk_command_buffer*, float*, int point_count, struct nk_color); /* misc */ NK_API void nk_draw_image(struct nk_command_buffer*, struct nk_rect, const struct nk_image*, struct nk_color); NK_API void nk_draw_text(struct nk_command_buffer*, struct nk_rect, const char *text, int len, const struct nk_user_font*, struct nk_color, struct nk_color); NK_API void nk_push_scissor(struct nk_command_buffer*, struct nk_rect); NK_API void nk_push_custom(struct nk_command_buffer*, struct nk_rect, nk_command_custom_callback, nk_handle usr); /* =============================================================== * * INPUT * * ===============================================================*/ struct nk_mouse_button { int down; unsigned int clicked; struct nk_vec2 clicked_pos; }; struct nk_mouse { struct nk_mouse_button buttons[NK_BUTTON_MAX]; struct nk_vec2 pos; struct nk_vec2 prev; struct nk_vec2 delta; struct nk_vec2 scroll_delta; unsigned char grab; unsigned char grabbed; unsigned char ungrab; }; struct nk_key { int down; unsigned int clicked; }; struct nk_keyboard { struct nk_key keys[NK_KEY_MAX]; char text[NK_INPUT_MAX]; int text_len; }; struct nk_input { struct nk_keyboard keyboard; struct nk_mouse mouse; }; NK_API int nk_input_has_mouse_click(const struct nk_input*, enum nk_buttons); NK_API int nk_input_has_mouse_click_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_has_mouse_click_down_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect, int down); NK_API int nk_input_is_mouse_click_in_rect(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_is_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down); NK_API int nk_input_any_mouse_click_in_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_is_mouse_prev_hovering_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_is_mouse_hovering_rect(const struct nk_input*, struct nk_rect); NK_API int nk_input_mouse_clicked(const struct nk_input*, enum nk_buttons, struct nk_rect); NK_API int nk_input_is_mouse_down(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_mouse_pressed(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_mouse_released(const struct nk_input*, enum nk_buttons); NK_API int nk_input_is_key_pressed(const struct nk_input*, enum nk_keys); NK_API int nk_input_is_key_released(const struct nk_input*, enum nk_keys); NK_API int nk_input_is_key_down(const struct nk_input*, enum nk_keys); /* =============================================================== * * DRAW LIST * * ===============================================================*/ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT /* The optional vertex buffer draw list provides a 2D drawing context with antialiasing functionality which takes basic filled or outlined shapes or a path and outputs vertexes, elements and draw commands. The actual draw list API is not required to be used directly while using this library since converting the default library draw command output is done by just calling `nk_convert` but I decided to still make this library accessible since it can be useful. The draw list is based on a path buffering and polygon and polyline rendering API which allows a lot of ways to draw 2D content to screen. In fact it is probably more powerful than needed but allows even more crazy things than this library provides by default. */ #ifdef NK_UINT_DRAW_INDEX typedef nk_uint nk_draw_index; #else typedef nk_ushort nk_draw_index; #endif enum nk_draw_list_stroke { NK_STROKE_OPEN = nk_false, /* build up path has no connection back to the beginning */ NK_STROKE_CLOSED = nk_true /* build up path has a connection back to the beginning */ }; enum nk_draw_vertex_layout_attribute { NK_VERTEX_POSITION, NK_VERTEX_COLOR, NK_VERTEX_TEXCOORD, NK_VERTEX_ATTRIBUTE_COUNT }; enum nk_draw_vertex_layout_format { NK_FORMAT_SCHAR, NK_FORMAT_SSHORT, NK_FORMAT_SINT, NK_FORMAT_UCHAR, NK_FORMAT_USHORT, NK_FORMAT_UINT, NK_FORMAT_FLOAT, NK_FORMAT_DOUBLE, NK_FORMAT_COLOR_BEGIN, NK_FORMAT_R8G8B8 = NK_FORMAT_COLOR_BEGIN, NK_FORMAT_R16G15B16, NK_FORMAT_R32G32B32, NK_FORMAT_R8G8B8A8, NK_FORMAT_B8G8R8A8, NK_FORMAT_R16G15B16A16, NK_FORMAT_R32G32B32A32, NK_FORMAT_R32G32B32A32_FLOAT, NK_FORMAT_R32G32B32A32_DOUBLE, NK_FORMAT_RGB32, NK_FORMAT_RGBA32, NK_FORMAT_COLOR_END = NK_FORMAT_RGBA32, NK_FORMAT_COUNT }; #define NK_VERTEX_LAYOUT_END NK_VERTEX_ATTRIBUTE_COUNT,NK_FORMAT_COUNT,0 struct nk_draw_vertex_layout_element { enum nk_draw_vertex_layout_attribute attribute; enum nk_draw_vertex_layout_format format; nk_size offset; }; struct nk_draw_command { unsigned int elem_count; /* number of elements in the current draw batch */ struct nk_rect clip_rect; /* current screen clipping rectangle */ nk_handle texture; /* current texture to set */ #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; struct nk_draw_list { struct nk_rect clip_rect; struct nk_vec2 circle_vtx[12]; struct nk_convert_config config; struct nk_buffer *buffer; struct nk_buffer *vertices; struct nk_buffer *elements; unsigned int element_count; unsigned int vertex_count; unsigned int cmd_count; nk_size cmd_offset; unsigned int path_count; unsigned int path_offset; enum nk_anti_aliasing line_AA; enum nk_anti_aliasing shape_AA; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif }; /* draw list */ NK_API void nk_draw_list_init(struct nk_draw_list*); NK_API void nk_draw_list_setup(struct nk_draw_list*, const struct nk_convert_config*, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, enum nk_anti_aliasing line_aa,enum nk_anti_aliasing shape_aa); /* drawing */ #define nk_draw_list_foreach(cmd, can, b) for((cmd)=nk__draw_list_begin(can, b); (cmd)!=0; (cmd)=nk__draw_list_next(cmd, b, can)) NK_API const struct nk_draw_command* nk__draw_list_begin(const struct nk_draw_list*, const struct nk_buffer*); NK_API const struct nk_draw_command* nk__draw_list_next(const struct nk_draw_command*, const struct nk_buffer*, const struct nk_draw_list*); NK_API const struct nk_draw_command* nk__draw_list_end(const struct nk_draw_list*, const struct nk_buffer*); /* path */ NK_API void nk_draw_list_path_clear(struct nk_draw_list*); NK_API void nk_draw_list_path_line_to(struct nk_draw_list*, struct nk_vec2 pos); NK_API void nk_draw_list_path_arc_to_fast(struct nk_draw_list*, struct nk_vec2 center, float radius, int a_min, int a_max); NK_API void nk_draw_list_path_arc_to(struct nk_draw_list*, struct nk_vec2 center, float radius, float a_min, float a_max, unsigned int segments); NK_API void nk_draw_list_path_rect_to(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, float rounding); NK_API void nk_draw_list_path_curve_to(struct nk_draw_list*, struct nk_vec2 p2, struct nk_vec2 p3, struct nk_vec2 p4, unsigned int num_segments); NK_API void nk_draw_list_path_fill(struct nk_draw_list*, struct nk_color); NK_API void nk_draw_list_path_stroke(struct nk_draw_list*, struct nk_color, enum nk_draw_list_stroke closed, float thickness); /* stroke */ NK_API void nk_draw_list_stroke_line(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_color, float thickness); NK_API void nk_draw_list_stroke_rect(struct nk_draw_list*, struct nk_rect rect, struct nk_color, float rounding, float thickness); NK_API void nk_draw_list_stroke_triangle(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color, float thickness); NK_API void nk_draw_list_stroke_circle(struct nk_draw_list*, struct nk_vec2 center, float radius, struct nk_color, unsigned int segs, float thickness); NK_API void nk_draw_list_stroke_curve(struct nk_draw_list*, struct nk_vec2 p0, struct nk_vec2 cp0, struct nk_vec2 cp1, struct nk_vec2 p1, struct nk_color, unsigned int segments, float thickness); NK_API void nk_draw_list_stroke_poly_line(struct nk_draw_list*, const struct nk_vec2 *pnts, const unsigned int cnt, struct nk_color, enum nk_draw_list_stroke, float thickness, enum nk_anti_aliasing); /* fill */ NK_API void nk_draw_list_fill_rect(struct nk_draw_list*, struct nk_rect rect, struct nk_color, float rounding); NK_API void nk_draw_list_fill_rect_multi_color(struct nk_draw_list*, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom); NK_API void nk_draw_list_fill_triangle(struct nk_draw_list*, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color); NK_API void nk_draw_list_fill_circle(struct nk_draw_list*, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs); NK_API void nk_draw_list_fill_poly_convex(struct nk_draw_list*, const struct nk_vec2 *points, const unsigned int count, struct nk_color, enum nk_anti_aliasing); /* misc */ NK_API void nk_draw_list_add_image(struct nk_draw_list*, struct nk_image texture, struct nk_rect rect, struct nk_color); NK_API void nk_draw_list_add_text(struct nk_draw_list*, const struct nk_user_font*, struct nk_rect, const char *text, int len, float font_height, struct nk_color); #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_draw_list_push_userdata(struct nk_draw_list*, nk_handle userdata); #endif #endif /* =============================================================== * * GUI * * ===============================================================*/ enum nk_style_item_type { NK_STYLE_ITEM_COLOR, NK_STYLE_ITEM_IMAGE }; union nk_style_item_data { struct nk_image image; struct nk_color color; }; struct nk_style_item { enum nk_style_item_type type; union nk_style_item_data data; }; struct nk_style_text { struct nk_color color; struct nk_vec2 padding; }; struct nk_style_button { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* text */ struct nk_color text_background; struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; nk_flags text_alignment; /* properties */ float border; float rounding; struct nk_vec2 padding; struct nk_vec2 image_padding; struct nk_vec2 touch_padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle userdata); void(*draw_end)(struct nk_command_buffer*, nk_handle userdata); }; struct nk_style_toggle { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; /* text */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; struct nk_color text_background; nk_flags text_alignment; /* properties */ struct nk_vec2 padding; struct nk_vec2 touch_padding; float spacing; float border; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_selectable { /* background (inactive) */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item pressed; /* background (active) */ struct nk_style_item normal_active; struct nk_style_item hover_active; struct nk_style_item pressed_active; /* text color (inactive) */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_pressed; /* text color (active) */ struct nk_color text_normal_active; struct nk_color text_hover_active; struct nk_color text_pressed_active; struct nk_color text_background; nk_flags text_alignment; /* properties */ float rounding; struct nk_vec2 padding; struct nk_vec2 touch_padding; struct nk_vec2 image_padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_slider { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* background bar */ struct nk_color bar_normal; struct nk_color bar_hover; struct nk_color bar_active; struct nk_color bar_filled; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; /* properties */ float border; float rounding; float bar_height; struct nk_vec2 padding; struct nk_vec2 spacing; struct nk_vec2 cursor_size; /* optional buttons */ int show_buttons; struct nk_style_button inc_button; struct nk_style_button dec_button; enum nk_symbol_type inc_symbol; enum nk_symbol_type dec_symbol; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_progress { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; struct nk_color cursor_border_color; /* properties */ float rounding; float border; float cursor_border; float cursor_rounding; struct nk_vec2 padding; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_scrollbar { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* cursor */ struct nk_style_item cursor_normal; struct nk_style_item cursor_hover; struct nk_style_item cursor_active; struct nk_color cursor_border_color; /* properties */ float border; float rounding; float border_cursor; float rounding_cursor; struct nk_vec2 padding; /* optional buttons */ int show_buttons; struct nk_style_button inc_button; struct nk_style_button dec_button; enum nk_symbol_type inc_symbol; enum nk_symbol_type dec_symbol; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_edit { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; struct nk_style_scrollbar scrollbar; /* cursor */ struct nk_color cursor_normal; struct nk_color cursor_hover; struct nk_color cursor_text_normal; struct nk_color cursor_text_hover; /* text (unselected) */ struct nk_color text_normal; struct nk_color text_hover; struct nk_color text_active; /* text (selected) */ struct nk_color selected_normal; struct nk_color selected_hover; struct nk_color selected_text_normal; struct nk_color selected_text_hover; /* properties */ float border; float rounding; float cursor_size; struct nk_vec2 scrollbar_size; struct nk_vec2 padding; float row_padding; }; struct nk_style_property { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* text */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* symbols */ enum nk_symbol_type sym_left; enum nk_symbol_type sym_right; /* properties */ float border; float rounding; struct nk_vec2 padding; struct nk_style_edit edit; struct nk_style_button inc_button; struct nk_style_button dec_button; /* optional user callbacks */ nk_handle userdata; void(*draw_begin)(struct nk_command_buffer*, nk_handle); void(*draw_end)(struct nk_command_buffer*, nk_handle); }; struct nk_style_chart { /* colors */ struct nk_style_item background; struct nk_color border_color; struct nk_color selected_color; struct nk_color color; /* properties */ float border; float rounding; struct nk_vec2 padding; }; struct nk_style_combo { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; struct nk_color border_color; /* label */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* symbol */ struct nk_color symbol_normal; struct nk_color symbol_hover; struct nk_color symbol_active; /* button */ struct nk_style_button button; enum nk_symbol_type sym_normal; enum nk_symbol_type sym_hover; enum nk_symbol_type sym_active; /* properties */ float border; float rounding; struct nk_vec2 content_padding; struct nk_vec2 button_padding; struct nk_vec2 spacing; }; struct nk_style_tab { /* background */ struct nk_style_item background; struct nk_color border_color; struct nk_color text; /* button */ struct nk_style_button tab_maximize_button; struct nk_style_button tab_minimize_button; struct nk_style_button node_maximize_button; struct nk_style_button node_minimize_button; enum nk_symbol_type sym_minimize; enum nk_symbol_type sym_maximize; /* properties */ float border; float rounding; float indent; struct nk_vec2 padding; struct nk_vec2 spacing; }; enum nk_style_header_align { NK_HEADER_LEFT, NK_HEADER_RIGHT }; struct nk_style_window_header { /* background */ struct nk_style_item normal; struct nk_style_item hover; struct nk_style_item active; /* button */ struct nk_style_button close_button; struct nk_style_button minimize_button; enum nk_symbol_type close_symbol; enum nk_symbol_type minimize_symbol; enum nk_symbol_type maximize_symbol; /* title */ struct nk_color label_normal; struct nk_color label_hover; struct nk_color label_active; /* properties */ enum nk_style_header_align align; struct nk_vec2 padding; struct nk_vec2 label_padding; struct nk_vec2 spacing; }; struct nk_style_window { struct nk_style_window_header header; struct nk_style_item fixed_background; struct nk_color background; struct nk_color border_color; struct nk_color popup_border_color; struct nk_color combo_border_color; struct nk_color contextual_border_color; struct nk_color menu_border_color; struct nk_color group_border_color; struct nk_color tooltip_border_color; struct nk_style_item scaler; float border; float combo_border; float contextual_border; float menu_border; float group_border; float tooltip_border; float popup_border; float min_row_height_padding; float rounding; struct nk_vec2 spacing; struct nk_vec2 scrollbar_size; struct nk_vec2 min_size; struct nk_vec2 padding; struct nk_vec2 group_padding; struct nk_vec2 popup_padding; struct nk_vec2 combo_padding; struct nk_vec2 contextual_padding; struct nk_vec2 menu_padding; struct nk_vec2 tooltip_padding; }; struct nk_style { const struct nk_user_font *font; const struct nk_cursor *cursors[NK_CURSOR_COUNT]; const struct nk_cursor *cursor_active; struct nk_cursor *cursor_last; int cursor_visible; struct nk_style_text text; struct nk_style_button button; struct nk_style_button contextual_button; struct nk_style_button menu_button; struct nk_style_toggle option; struct nk_style_toggle checkbox; struct nk_style_selectable selectable; struct nk_style_slider slider; struct nk_style_progress progress; struct nk_style_property property; struct nk_style_edit edit; struct nk_style_chart chart; struct nk_style_scrollbar scrollh; struct nk_style_scrollbar scrollv; struct nk_style_tab tab; struct nk_style_combo combo; struct nk_style_window window; }; NK_API struct nk_style_item nk_style_item_image(struct nk_image img); NK_API struct nk_style_item nk_style_item_color(struct nk_color); NK_API struct nk_style_item nk_style_item_hide(void); /*============================================================== * PANEL * =============================================================*/ #ifndef NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS #define NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS 16 #endif #ifndef NK_CHART_MAX_SLOT #define NK_CHART_MAX_SLOT 4 #endif enum nk_panel_type { NK_PANEL_NONE = 0, NK_PANEL_WINDOW = NK_FLAG(0), NK_PANEL_GROUP = NK_FLAG(1), NK_PANEL_POPUP = NK_FLAG(2), NK_PANEL_CONTEXTUAL = NK_FLAG(4), NK_PANEL_COMBO = NK_FLAG(5), NK_PANEL_MENU = NK_FLAG(6), NK_PANEL_TOOLTIP = NK_FLAG(7) }; enum nk_panel_set { NK_PANEL_SET_NONBLOCK = NK_PANEL_CONTEXTUAL|NK_PANEL_COMBO|NK_PANEL_MENU|NK_PANEL_TOOLTIP, NK_PANEL_SET_POPUP = NK_PANEL_SET_NONBLOCK|NK_PANEL_POPUP, NK_PANEL_SET_SUB = NK_PANEL_SET_POPUP|NK_PANEL_GROUP }; struct nk_chart_slot { enum nk_chart_type type; struct nk_color color; struct nk_color highlight; float min, max, range; int count; struct nk_vec2 last; int index; }; struct nk_chart { int slot; float x, y, w, h; struct nk_chart_slot slots[NK_CHART_MAX_SLOT]; }; enum nk_panel_row_layout_type { NK_LAYOUT_DYNAMIC_FIXED = 0, NK_LAYOUT_DYNAMIC_ROW, NK_LAYOUT_DYNAMIC_FREE, NK_LAYOUT_DYNAMIC, NK_LAYOUT_STATIC_FIXED, NK_LAYOUT_STATIC_ROW, NK_LAYOUT_STATIC_FREE, NK_LAYOUT_STATIC, NK_LAYOUT_TEMPLATE, NK_LAYOUT_COUNT }; struct nk_row_layout { enum nk_panel_row_layout_type type; int index; float height; float min_height; int columns; const float *ratio; float item_width; float item_height; float item_offset; float filled; struct nk_rect item; int tree_depth; float templates[NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS]; }; struct nk_popup_buffer { nk_size begin; nk_size parent; nk_size last; nk_size end; int active; }; struct nk_menu_state { float x, y, w, h; struct nk_scroll offset; }; struct nk_panel { enum nk_panel_type type; nk_flags flags; struct nk_rect bounds; nk_uint *offset_x; nk_uint *offset_y; float at_x, at_y, max_x; float footer_height; float header_height; float border; unsigned int has_scrolling; struct nk_rect clip; struct nk_menu_state menu; struct nk_row_layout row; struct nk_chart chart; struct nk_command_buffer *buffer; struct nk_panel *parent; }; /*============================================================== * WINDOW * =============================================================*/ #ifndef NK_WINDOW_MAX_NAME #define NK_WINDOW_MAX_NAME 64 #endif struct nk_table; enum nk_window_flags { NK_WINDOW_PRIVATE = NK_FLAG(11), NK_WINDOW_DYNAMIC = NK_WINDOW_PRIVATE, /* special window type growing up in height while being filled to a certain maximum height */ NK_WINDOW_ROM = NK_FLAG(12), /* sets window widgets into a read only mode and does not allow input changes */ NK_WINDOW_NOT_INTERACTIVE = NK_WINDOW_ROM|NK_WINDOW_NO_INPUT, /* prevents all interaction caused by input to either window or widgets inside */ NK_WINDOW_HIDDEN = NK_FLAG(13), /* Hides window and stops any window interaction and drawing */ NK_WINDOW_CLOSED = NK_FLAG(14), /* Directly closes and frees the window at the end of the frame */ NK_WINDOW_MINIMIZED = NK_FLAG(15), /* marks the window as minimized */ NK_WINDOW_REMOVE_ROM = NK_FLAG(16) /* Removes read only mode at the end of the window */ }; struct nk_popup_state { struct nk_window *win; enum nk_panel_type type; struct nk_popup_buffer buf; nk_hash name; int active; unsigned combo_count; unsigned con_count, con_old; unsigned active_con; struct nk_rect header; }; struct nk_edit_state { nk_hash name; unsigned int seq; unsigned int old; int active, prev; int cursor; int sel_start; int sel_end; struct nk_scroll scrollbar; unsigned char mode; unsigned char single_line; }; struct nk_property_state { int active, prev; char buffer[NK_MAX_NUMBER_BUFFER]; int length; int cursor; int select_start; int select_end; nk_hash name; unsigned int seq; unsigned int old; int state; }; struct nk_window { unsigned int seq; nk_hash name; char name_string[NK_WINDOW_MAX_NAME]; nk_flags flags; struct nk_rect bounds; struct nk_scroll scrollbar; struct nk_command_buffer buffer; struct nk_panel *layout; float scrollbar_hiding_timer; /* persistent widget state */ struct nk_property_state property; struct nk_popup_state popup; struct nk_edit_state edit; unsigned int scrolled; struct nk_table *tables; unsigned int table_count; /* window list hooks */ struct nk_window *next; struct nk_window *prev; struct nk_window *parent; }; /*============================================================== * STACK * =============================================================*/ /* The style modifier stack can be used to temporarily change a * property inside `nk_style`. For example if you want a special * red button you can temporarily push the old button color onto a stack * draw the button with a red color and then you just pop the old color * back from the stack: * * nk_style_push_style_item(ctx, &ctx->style.button.normal, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_style_item(ctx, &ctx->style.button.hover, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_style_item(ctx, &ctx->style.button.active, nk_style_item_color(nk_rgb(255,0,0))); * nk_style_push_vec2(ctx, &cx->style.button.padding, nk_vec2(2,2)); * * nk_button(...); * * nk_style_pop_style_item(ctx); * nk_style_pop_style_item(ctx); * nk_style_pop_style_item(ctx); * nk_style_pop_vec2(ctx); * * Nuklear has a stack for style_items, float properties, vector properties, * flags, colors, fonts and for button_behavior. Each has it's own fixed size stack * which can be changed at compile time. */ #ifndef NK_BUTTON_BEHAVIOR_STACK_SIZE #define NK_BUTTON_BEHAVIOR_STACK_SIZE 8 #endif #ifndef NK_FONT_STACK_SIZE #define NK_FONT_STACK_SIZE 8 #endif #ifndef NK_STYLE_ITEM_STACK_SIZE #define NK_STYLE_ITEM_STACK_SIZE 16 #endif #ifndef NK_FLOAT_STACK_SIZE #define NK_FLOAT_STACK_SIZE 32 #endif #ifndef NK_VECTOR_STACK_SIZE #define NK_VECTOR_STACK_SIZE 16 #endif #ifndef NK_FLAGS_STACK_SIZE #define NK_FLAGS_STACK_SIZE 32 #endif #ifndef NK_COLOR_STACK_SIZE #define NK_COLOR_STACK_SIZE 32 #endif #define NK_CONFIGURATION_STACK_TYPE(prefix, name, type)\ struct nk_config_stack_##name##_element {\ prefix##_##type *address;\ prefix##_##type old_value;\ } #define NK_CONFIG_STACK(type,size)\ struct nk_config_stack_##type {\ int head;\ struct nk_config_stack_##type##_element elements[size];\ } #define nk_float float NK_CONFIGURATION_STACK_TYPE(struct nk, style_item, style_item); NK_CONFIGURATION_STACK_TYPE(nk ,float, float); NK_CONFIGURATION_STACK_TYPE(struct nk, vec2, vec2); NK_CONFIGURATION_STACK_TYPE(nk ,flags, flags); NK_CONFIGURATION_STACK_TYPE(struct nk, color, color); NK_CONFIGURATION_STACK_TYPE(const struct nk, user_font, user_font*); NK_CONFIGURATION_STACK_TYPE(enum nk, button_behavior, button_behavior); NK_CONFIG_STACK(style_item, NK_STYLE_ITEM_STACK_SIZE); NK_CONFIG_STACK(float, NK_FLOAT_STACK_SIZE); NK_CONFIG_STACK(vec2, NK_VECTOR_STACK_SIZE); NK_CONFIG_STACK(flags, NK_FLAGS_STACK_SIZE); NK_CONFIG_STACK(color, NK_COLOR_STACK_SIZE); NK_CONFIG_STACK(user_font, NK_FONT_STACK_SIZE); NK_CONFIG_STACK(button_behavior, NK_BUTTON_BEHAVIOR_STACK_SIZE); struct nk_configuration_stacks { struct nk_config_stack_style_item style_items; struct nk_config_stack_float floats; struct nk_config_stack_vec2 vectors; struct nk_config_stack_flags flags; struct nk_config_stack_color colors; struct nk_config_stack_user_font fonts; struct nk_config_stack_button_behavior button_behaviors; }; /*============================================================== * CONTEXT * =============================================================*/ #define NK_VALUE_PAGE_CAPACITY \ (((NK_MAX(sizeof(struct nk_window),sizeof(struct nk_panel)) / sizeof(nk_uint))) / 2) struct nk_table { unsigned int seq; unsigned int size; nk_hash keys[NK_VALUE_PAGE_CAPACITY]; nk_uint values[NK_VALUE_PAGE_CAPACITY]; struct nk_table *next, *prev; }; union nk_page_data { struct nk_table tbl; struct nk_panel pan; struct nk_window win; }; struct nk_page_element { union nk_page_data data; struct nk_page_element *next; struct nk_page_element *prev; }; struct nk_page { unsigned int size; struct nk_page *next; struct nk_page_element win[1]; }; struct nk_pool { struct nk_allocator alloc; enum nk_allocation_type type; unsigned int page_count; struct nk_page *pages; struct nk_page_element *freelist; unsigned capacity; nk_size size; nk_size cap; }; struct nk_context { /* public: can be accessed freely */ struct nk_input input; struct nk_style style; struct nk_buffer memory; struct nk_clipboard clip; nk_flags last_widget_state; enum nk_button_behavior button_behavior; struct nk_configuration_stacks stacks; float delta_time_seconds; /* private: should only be accessed if you know what you are doing */ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT struct nk_draw_list draw_list; #endif #ifdef NK_INCLUDE_COMMAND_USERDATA nk_handle userdata; #endif /* text editor objects are quite big because of an internal * undo/redo stack. Therefore it does not make sense to have one for * each window for temporary use cases, so I only provide *one* instance * for all windows. This works because the content is cleared anyway */ struct nk_text_edit text_edit; /* draw buffer used for overlay drawing operation like cursor */ struct nk_command_buffer overlay; /* windows */ int build; int use_pool; struct nk_pool pool; struct nk_window *begin; struct nk_window *end; struct nk_window *active; struct nk_window *current; struct nk_page_element *freelist; unsigned int count; unsigned int seq; }; /* ============================================================== * MATH * =============================================================== */ #define NK_PI 3.141592654f #define NK_UTF_INVALID 0xFFFD #define NK_MAX_FLOAT_PRECISION 2 #define NK_UNUSED(x) ((void)(x)) #define NK_SATURATE(x) (NK_MAX(0, NK_MIN(1.0f, x))) #define NK_LEN(a) (sizeof(a)/sizeof(a)[0]) #define NK_ABS(a) (((a) < 0) ? -(a) : (a)) #define NK_BETWEEN(x, a, b) ((a) <= (x) && (x) < (b)) #define NK_INBOX(px, py, x, y, w, h)\ (NK_BETWEEN(px,x,x+w) && NK_BETWEEN(py,y,y+h)) #define NK_INTERSECT(x0, y0, w0, h0, x1, y1, w1, h1) \ (!(((x1 > (x0 + w0)) || ((x1 + w1) < x0) || (y1 > (y0 + h0)) || (y1 + h1) < y0))) #define NK_CONTAINS(x, y, w, h, bx, by, bw, bh)\ (NK_INBOX(x,y, bx, by, bw, bh) && NK_INBOX(x+w,y+h, bx, by, bw, bh)) #define nk_vec2_sub(a, b) nk_vec2((a).x - (b).x, (a).y - (b).y) #define nk_vec2_add(a, b) nk_vec2((a).x + (b).x, (a).y + (b).y) #define nk_vec2_len_sqr(a) ((a).x*(a).x+(a).y*(a).y) #define nk_vec2_muls(a, t) nk_vec2((a).x * (t), (a).y * (t)) #define nk_ptr_add(t, p, i) ((t*)((void*)((nk_byte*)(p) + (i)))) #define nk_ptr_add_const(t, p, i) ((const t*)((const void*)((const nk_byte*)(p) + (i)))) #define nk_zero_struct(s) nk_zero(&s, sizeof(s)) /* ============================================================== * ALIGNMENT * =============================================================== */ /* Pointer to Integer type conversion for pointer alignment */ #if defined(__PTRDIFF_TYPE__) /* This case should work for GCC*/ # define NK_UINT_TO_PTR(x) ((void*)(__PTRDIFF_TYPE__)(x)) # define NK_PTR_TO_UINT(x) ((nk_size)(__PTRDIFF_TYPE__)(x)) #elif !defined(__GNUC__) /* works for compilers other than LLVM */ # define NK_UINT_TO_PTR(x) ((void*)&((char*)0)[x]) # define NK_PTR_TO_UINT(x) ((nk_size)(((char*)x)-(char*)0)) #elif defined(NK_USE_FIXED_TYPES) /* used if we have */ # define NK_UINT_TO_PTR(x) ((void*)(uintptr_t)(x)) # define NK_PTR_TO_UINT(x) ((uintptr_t)(x)) #else /* generates warning but works */ # define NK_UINT_TO_PTR(x) ((void*)(x)) # define NK_PTR_TO_UINT(x) ((nk_size)(x)) #endif #define NK_ALIGN_PTR(x, mask)\ (NK_UINT_TO_PTR((NK_PTR_TO_UINT((nk_byte*)(x) + (mask-1)) & ~(mask-1)))) #define NK_ALIGN_PTR_BACK(x, mask)\ (NK_UINT_TO_PTR((NK_PTR_TO_UINT((nk_byte*)(x)) & ~(mask-1)))) #define NK_OFFSETOF(st,m) ((nk_ptr)&(((st*)0)->m)) #define NK_CONTAINER_OF(ptr,type,member)\ (type*)((void*)((char*)(1 ? (ptr): &((type*)0)->member) - NK_OFFSETOF(type, member))) #ifdef __cplusplus } #endif #ifdef __cplusplus template struct nk_alignof; template struct nk_helper{enum {value = size_diff};}; template struct nk_helper{enum {value = nk_alignof::value};}; template struct nk_alignof{struct Big {T x; char c;}; enum { diff = sizeof(Big) - sizeof(T), value = nk_helper::value};}; #define NK_ALIGNOF(t) (nk_alignof::value) #elif defined(_MSC_VER) #define NK_ALIGNOF(t) (__alignof(t)) #else #define NK_ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0) #endif #endif /* NK_NUKLEAR_H_ */ ================================================ FILE: src/nuklear_buffer.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * BUFFER * * ===============================================================*/ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_LIB void* nk_malloc(nk_handle unused, void *old,nk_size size) { NK_UNUSED(unused); NK_UNUSED(old); return malloc(size); } NK_LIB void nk_mfree(nk_handle unused, void *ptr) { NK_UNUSED(unused); free(ptr); } NK_API void nk_buffer_init_default(struct nk_buffer *buffer) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; nk_buffer_init(buffer, &alloc, NK_BUFFER_DEFAULT_INITIAL_SIZE); } #endif NK_API void nk_buffer_init(struct nk_buffer *b, const struct nk_allocator *a, nk_size initial_size) { NK_ASSERT(b); NK_ASSERT(a); NK_ASSERT(initial_size); if (!b || !a || !initial_size) return; nk_zero(b, sizeof(*b)); b->type = NK_BUFFER_DYNAMIC; b->memory.ptr = a->alloc(a->userdata,0, initial_size); b->memory.size = initial_size; b->size = initial_size; b->grow_factor = 2.0f; b->pool = *a; } NK_API void nk_buffer_init_fixed(struct nk_buffer *b, void *m, nk_size size) { NK_ASSERT(b); NK_ASSERT(m); NK_ASSERT(size); if (!b || !m || !size) return; nk_zero(b, sizeof(*b)); b->type = NK_BUFFER_FIXED; b->memory.ptr = m; b->memory.size = size; b->size = size; } NK_LIB void* nk_buffer_align(void *unaligned, nk_size align, nk_size *alignment, enum nk_buffer_allocation_type type) { void *memory = 0; switch (type) { default: case NK_BUFFER_MAX: case NK_BUFFER_FRONT: if (align) { memory = NK_ALIGN_PTR(unaligned, align); *alignment = (nk_size)((nk_byte*)memory - (nk_byte*)unaligned); } else { memory = unaligned; *alignment = 0; } break; case NK_BUFFER_BACK: if (align) { memory = NK_ALIGN_PTR_BACK(unaligned, align); *alignment = (nk_size)((nk_byte*)unaligned - (nk_byte*)memory); } else { memory = unaligned; *alignment = 0; } break; } return memory; } NK_LIB void* nk_buffer_realloc(struct nk_buffer *b, nk_size capacity, nk_size *size) { void *temp; nk_size buffer_size; NK_ASSERT(b); NK_ASSERT(size); if (!b || !size || !b->pool.alloc || !b->pool.free) return 0; buffer_size = b->memory.size; temp = b->pool.alloc(b->pool.userdata, b->memory.ptr, capacity); NK_ASSERT(temp); if (!temp) return 0; *size = capacity; if (temp != b->memory.ptr) { NK_MEMCPY(temp, b->memory.ptr, buffer_size); b->pool.free(b->pool.userdata, b->memory.ptr); } if (b->size == buffer_size) { /* no back buffer so just set correct size */ b->size = capacity; return temp; } else { /* copy back buffer to the end of the new buffer */ void *dst, *src; nk_size back_size; back_size = buffer_size - b->size; dst = nk_ptr_add(void, temp, capacity - back_size); src = nk_ptr_add(void, temp, b->size); NK_MEMCPY(dst, src, back_size); b->size = capacity - back_size; } return temp; } NK_LIB void* nk_buffer_alloc(struct nk_buffer *b, enum nk_buffer_allocation_type type, nk_size size, nk_size align) { int full; nk_size alignment; void *unaligned; void *memory; NK_ASSERT(b); NK_ASSERT(size); if (!b || !size) return 0; b->needed += size; /* calculate total size with needed alignment + size */ if (type == NK_BUFFER_FRONT) unaligned = nk_ptr_add(void, b->memory.ptr, b->allocated); else unaligned = nk_ptr_add(void, b->memory.ptr, b->size - size); memory = nk_buffer_align(unaligned, align, &alignment, type); /* check if buffer has enough memory*/ if (type == NK_BUFFER_FRONT) full = ((b->allocated + size + alignment) > b->size); else full = ((b->size - NK_MIN(b->size,(size + alignment))) <= b->allocated); if (full) { nk_size capacity; if (b->type != NK_BUFFER_DYNAMIC) return 0; NK_ASSERT(b->pool.alloc && b->pool.free); if (b->type != NK_BUFFER_DYNAMIC || !b->pool.alloc || !b->pool.free) return 0; /* buffer is full so allocate bigger buffer if dynamic */ capacity = (nk_size)((float)b->memory.size * b->grow_factor); capacity = NK_MAX(capacity, nk_round_up_pow2((nk_uint)(b->allocated + size))); b->memory.ptr = nk_buffer_realloc(b, capacity, &b->memory.size); if (!b->memory.ptr) return 0; /* align newly allocated pointer */ if (type == NK_BUFFER_FRONT) unaligned = nk_ptr_add(void, b->memory.ptr, b->allocated); else unaligned = nk_ptr_add(void, b->memory.ptr, b->size - size); memory = nk_buffer_align(unaligned, align, &alignment, type); } if (type == NK_BUFFER_FRONT) b->allocated += size + alignment; else b->size -= (size + alignment); b->needed += alignment; b->calls++; return memory; } NK_API void nk_buffer_push(struct nk_buffer *b, enum nk_buffer_allocation_type type, const void *memory, nk_size size, nk_size align) { void *mem = nk_buffer_alloc(b, type, size, align); if (!mem) return; NK_MEMCPY(mem, memory, size); } NK_API void nk_buffer_mark(struct nk_buffer *buffer, enum nk_buffer_allocation_type type) { NK_ASSERT(buffer); if (!buffer) return; buffer->marker[type].active = nk_true; if (type == NK_BUFFER_BACK) buffer->marker[type].offset = buffer->size; else buffer->marker[type].offset = buffer->allocated; } NK_API void nk_buffer_reset(struct nk_buffer *buffer, enum nk_buffer_allocation_type type) { NK_ASSERT(buffer); if (!buffer) return; if (type == NK_BUFFER_BACK) { /* reset back buffer either back to marker or empty */ buffer->needed -= (buffer->memory.size - buffer->marker[type].offset); if (buffer->marker[type].active) buffer->size = buffer->marker[type].offset; else buffer->size = buffer->memory.size; buffer->marker[type].active = nk_false; } else { /* reset front buffer either back to back marker or empty */ buffer->needed -= (buffer->allocated - buffer->marker[type].offset); if (buffer->marker[type].active) buffer->allocated = buffer->marker[type].offset; else buffer->allocated = 0; buffer->marker[type].active = nk_false; } } NK_API void nk_buffer_clear(struct nk_buffer *b) { NK_ASSERT(b); if (!b) return; b->allocated = 0; b->size = b->memory.size; b->calls = 0; b->needed = 0; } NK_API void nk_buffer_free(struct nk_buffer *b) { NK_ASSERT(b); if (!b || !b->memory.ptr) return; if (b->type == NK_BUFFER_FIXED) return; if (!b->pool.free) return; NK_ASSERT(b->pool.free); b->pool.free(b->pool.userdata, b->memory.ptr); } NK_API void nk_buffer_info(struct nk_memory_status *s, struct nk_buffer *b) { NK_ASSERT(b); NK_ASSERT(s); if (!s || !b) return; s->allocated = b->allocated; s->size = b->memory.size; s->needed = b->needed; s->memory = b->memory.ptr; s->calls = b->calls; } NK_API void* nk_buffer_memory(struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.ptr; } NK_API const void* nk_buffer_memory_const(const struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.ptr; } NK_API nk_size nk_buffer_total(struct nk_buffer *buffer) { NK_ASSERT(buffer); if (!buffer) return 0; return buffer->memory.size; } ================================================ FILE: src/nuklear_button.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * BUTTON * * ===============================================================*/ NK_LIB void nk_draw_symbol(struct nk_command_buffer *out, enum nk_symbol_type type, struct nk_rect content, struct nk_color background, struct nk_color foreground, float border_width, const struct nk_user_font *font) { switch (type) { case NK_SYMBOL_X: case NK_SYMBOL_UNDERSCORE: case NK_SYMBOL_PLUS: case NK_SYMBOL_MINUS: { /* single character text symbol */ const char *X = (type == NK_SYMBOL_X) ? "x": (type == NK_SYMBOL_UNDERSCORE) ? "_": (type == NK_SYMBOL_PLUS) ? "+": "-"; struct nk_text text; text.padding = nk_vec2(0,0); text.background = background; text.text = foreground; nk_widget_text(out, content, X, 1, &text, NK_TEXT_CENTERED, font); } break; case NK_SYMBOL_CIRCLE_SOLID: case NK_SYMBOL_CIRCLE_OUTLINE: case NK_SYMBOL_RECT_SOLID: case NK_SYMBOL_RECT_OUTLINE: { /* simple empty/filled shapes */ if (type == NK_SYMBOL_RECT_SOLID || type == NK_SYMBOL_RECT_OUTLINE) { nk_fill_rect(out, content, 0, foreground); if (type == NK_SYMBOL_RECT_OUTLINE) nk_fill_rect(out, nk_shrink_rect(content, border_width), 0, background); } else { nk_fill_circle(out, content, foreground); if (type == NK_SYMBOL_CIRCLE_OUTLINE) nk_fill_circle(out, nk_shrink_rect(content, 1), background); } } break; case NK_SYMBOL_TRIANGLE_UP: case NK_SYMBOL_TRIANGLE_DOWN: case NK_SYMBOL_TRIANGLE_LEFT: case NK_SYMBOL_TRIANGLE_RIGHT: { enum nk_heading heading; struct nk_vec2 points[3]; heading = (type == NK_SYMBOL_TRIANGLE_RIGHT) ? NK_RIGHT : (type == NK_SYMBOL_TRIANGLE_LEFT) ? NK_LEFT: (type == NK_SYMBOL_TRIANGLE_UP) ? NK_UP: NK_DOWN; nk_triangle_from_direction(points, content, 0, 0, heading); nk_fill_triangle(out, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y, foreground); } break; default: case NK_SYMBOL_NONE: case NK_SYMBOL_MAX: break; } } NK_LIB int nk_button_behavior(nk_flags *state, struct nk_rect r, const struct nk_input *i, enum nk_button_behavior behavior) { int ret = 0; nk_widget_state_reset(state); if (!i) return 0; if (nk_input_is_mouse_hovering_rect(i, r)) { *state = NK_WIDGET_STATE_HOVERED; if (nk_input_is_mouse_down(i, NK_BUTTON_LEFT)) *state = NK_WIDGET_STATE_ACTIVE; if (nk_input_has_mouse_click_in_rect(i, NK_BUTTON_LEFT, r)) { ret = (behavior != NK_BUTTON_DEFAULT) ? nk_input_is_mouse_down(i, NK_BUTTON_LEFT): #ifdef NK_BUTTON_TRIGGER_ON_RELEASE nk_input_is_mouse_released(i, NK_BUTTON_LEFT); #else nk_input_is_mouse_pressed(i, NK_BUTTON_LEFT); #endif } } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(i, r)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(i, r)) *state |= NK_WIDGET_STATE_LEFT; return ret; } NK_LIB const struct nk_style_item* nk_draw_button(struct nk_command_buffer *out, const struct nk_rect *bounds, nk_flags state, const struct nk_style_button *style) { const struct nk_style_item *background; if (state & NK_WIDGET_STATE_HOVER) background = &style->hover; else if (state & NK_WIDGET_STATE_ACTIVED) background = &style->active; else background = &style->normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } return background; } NK_LIB int nk_do_button(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, const struct nk_style_button *style, const struct nk_input *in, enum nk_button_behavior behavior, struct nk_rect *content) { struct nk_rect bounds; NK_ASSERT(style); NK_ASSERT(state); NK_ASSERT(out); if (!out || !style) return nk_false; /* calculate button content space */ content->x = r.x + style->padding.x + style->border + style->rounding; content->y = r.y + style->padding.y + style->border + style->rounding; content->w = r.w - (2 * style->padding.x + style->border + style->rounding*2); content->h = r.h - (2 * style->padding.y + style->border + style->rounding*2); /* execute button behavior */ bounds.x = r.x - style->touch_padding.x; bounds.y = r.y - style->touch_padding.y; bounds.w = r.w + 2 * style->touch_padding.x; bounds.h = r.h + 2 * style->touch_padding.y; return nk_button_behavior(state, bounds, in, behavior); } NK_LIB void nk_draw_button_text(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const char *txt, int len, nk_flags text_alignment, const struct nk_user_font *font) { struct nk_text text; const struct nk_style_item *background; background = nk_draw_button(out, bounds, state, style); /* select correct colors/images */ if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; if (state & NK_WIDGET_STATE_HOVER) text.text = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) text.text = style->text_active; else text.text = style->text_normal; text.padding = nk_vec2(0,0); nk_widget_text(out, *content, txt, len, &text, text_alignment, font); } NK_LIB int nk_do_button_text(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *string, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font) { struct nk_rect content; int ret = nk_false; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(string); NK_ASSERT(font); if (!out || !style || !font || !string) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text(out, &bounds, &content, *state, style, string, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, enum nk_symbol_type type, const struct nk_user_font *font) { struct nk_color sym, bg; const struct nk_style_item *background; /* select correct colors/images */ background = nk_draw_button(out, bounds, state, style); if (background->type == NK_STYLE_ITEM_COLOR) bg = background->data.color; else bg = style->text_background; if (state & NK_WIDGET_STATE_HOVER) sym = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) sym = style->text_active; else sym = style->text_normal; nk_draw_symbol(out, type, *content, bg, sym, 1, font); } NK_LIB int nk_do_button_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font) { int ret; struct nk_rect content; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(font); NK_ASSERT(out); if (!out || !style || !font || !state) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_symbol(out, &bounds, &content, *state, style, symbol, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const struct nk_image *img) { nk_draw_button(out, bounds, state, style); nk_draw_image(out, *content, img, nk_white); } NK_LIB int nk_do_button_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, enum nk_button_behavior b, const struct nk_style_button *style, const struct nk_input *in) { int ret; struct nk_rect content; NK_ASSERT(state); NK_ASSERT(style); NK_ASSERT(out); if (!out || !style || !state) return nk_false; ret = nk_do_button(state, out, bounds, style, in, b, &content); content.x += style->image_padding.x; content.y += style->image_padding.y; content.w -= 2 * style->image_padding.x; content.h -= 2 * style->image_padding.y; if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_image(out, &bounds, &content, *state, style, &img); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_text_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *symbol, nk_flags state, const struct nk_style_button *style, const char *str, int len, enum nk_symbol_type type, const struct nk_user_font *font) { struct nk_color sym; struct nk_text text; const struct nk_style_item *background; /* select correct background colors/images */ background = nk_draw_button(out, bounds, state, style); if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; /* select correct text colors */ if (state & NK_WIDGET_STATE_HOVER) { sym = style->text_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { sym = style->text_active; text.text = style->text_active; } else { sym = style->text_normal; text.text = style->text_normal; } text.padding = nk_vec2(0,0); nk_draw_symbol(out, type, *symbol, style->text_background, sym, 0, font); nk_widget_text(out, *label, str, len, &text, NK_TEXT_CENTERED, font); } NK_LIB int nk_do_button_text_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, const char *str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in) { int ret; struct nk_rect tri = {0,0,0,0}; struct nk_rect content; NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(font); if (!out || !style || !font) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); tri.y = content.y + (content.h/2) - font->height/2; tri.w = font->height; tri.h = font->height; if (align & NK_TEXT_ALIGN_LEFT) { tri.x = (content.x + content.w) - (2 * style->padding.x + tri.w); tri.x = NK_MAX(tri.x, 0); } else tri.x = content.x + 2 * style->padding.x; /* draw button */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text_symbol(out, &bounds, &content, &tri, *state, style, str, len, symbol, font); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_LIB void nk_draw_button_text_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *image, nk_flags state, const struct nk_style_button *style, const char *str, int len, const struct nk_user_font *font, const struct nk_image *img) { struct nk_text text; const struct nk_style_item *background; background = nk_draw_button(out, bounds, state, style); /* select correct colors */ if (background->type == NK_STYLE_ITEM_COLOR) text.background = background->data.color; else text.background = style->text_background; if (state & NK_WIDGET_STATE_HOVER) text.text = style->text_hover; else if (state & NK_WIDGET_STATE_ACTIVED) text.text = style->text_active; else text.text = style->text_normal; text.padding = nk_vec2(0,0); nk_widget_text(out, *label, str, len, &text, NK_TEXT_CENTERED, font); nk_draw_image(out, *image, img, nk_white); } NK_LIB int nk_do_button_text_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, const char* str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in) { int ret; struct nk_rect icon; struct nk_rect content; NK_ASSERT(style); NK_ASSERT(state); NK_ASSERT(font); NK_ASSERT(out); if (!out || !font || !style || !str) return nk_false; ret = nk_do_button(state, out, bounds, style, in, behavior, &content); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_button_text_image(out, &bounds, &content, &icon, *state, style, str, len, font, &img); if (style->draw_end) style->draw_end(out, style->userdata); return ret; } NK_API void nk_button_set_behavior(struct nk_context *ctx, enum nk_button_behavior behavior) { NK_ASSERT(ctx); if (!ctx) return; ctx->button_behavior = behavior; } NK_API int nk_button_push_behavior(struct nk_context *ctx, enum nk_button_behavior behavior) { struct nk_config_stack_button_behavior *button_stack; struct nk_config_stack_button_behavior_element *element; NK_ASSERT(ctx); if (!ctx) return 0; button_stack = &ctx->stacks.button_behaviors; NK_ASSERT(button_stack->head < (int)NK_LEN(button_stack->elements)); if (button_stack->head >= (int)NK_LEN(button_stack->elements)) return 0; element = &button_stack->elements[button_stack->head++]; element->address = &ctx->button_behavior; element->old_value = ctx->button_behavior; ctx->button_behavior = behavior; return 1; } NK_API int nk_button_pop_behavior(struct nk_context *ctx) { struct nk_config_stack_button_behavior *button_stack; struct nk_config_stack_button_behavior_element *element; NK_ASSERT(ctx); if (!ctx) return 0; button_stack = &ctx->stacks.button_behaviors; NK_ASSERT(button_stack->head > 0); if (button_stack->head < 1) return 0; element = &button_stack->elements[--button_stack->head]; *element->address = element->old_value; return 1; } NK_API int nk_button_text_styled(struct nk_context *ctx, const struct nk_style_button *style, const char *title, int len) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(style); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!style || !ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text(&ctx->last_widget_state, &win->buffer, bounds, title, len, style->text_alignment, ctx->button_behavior, style, in, ctx->style.font); } NK_API int nk_button_text(struct nk_context *ctx, const char *title, int len) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_text_styled(ctx, &ctx->style.button, title, len); } NK_API int nk_button_label_styled(struct nk_context *ctx, const struct nk_style_button *style, const char *title) { return nk_button_text_styled(ctx, style, title, nk_strlen(title)); } NK_API int nk_button_label(struct nk_context *ctx, const char *title) { return nk_button_text(ctx, title, nk_strlen(title)); } NK_API int nk_button_color(struct nk_context *ctx, struct nk_color color) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_style_button button; int ret = 0; struct nk_rect bounds; struct nk_rect content; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; button = ctx->style.button; button.normal = nk_style_item_color(color); button.hover = nk_style_item_color(color); button.active = nk_style_item_color(color); ret = nk_do_button(&ctx->last_widget_state, &win->buffer, bounds, &button, in, ctx->button_behavior, &content); nk_draw_button(&win->buffer, &bounds, ctx->last_widget_state, &button); return ret; } NK_API int nk_button_symbol_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, ctx->button_behavior, style, in, ctx->style.font); } NK_API int nk_button_symbol(struct nk_context *ctx, enum nk_symbol_type symbol) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_symbol_styled(ctx, &ctx->style.button, symbol); } NK_API int nk_button_image_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_image(&ctx->last_widget_state, &win->buffer, bounds, img, ctx->button_behavior, style, in); } NK_API int nk_button_image(struct nk_context *ctx, struct nk_image img) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_image_styled(ctx, &ctx->style.button, img); } NK_API int nk_button_symbol_text_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *text, int len, nk_flags align) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, text, len, align, ctx->button_behavior, style, ctx->style.font, in); } NK_API int nk_button_symbol_text(struct nk_context *ctx, enum nk_symbol_type symbol, const char* text, int len, nk_flags align) { NK_ASSERT(ctx); if (!ctx) return 0; return nk_button_symbol_text_styled(ctx, &ctx->style.button, symbol, text, len, align); } NK_API int nk_button_symbol_label(struct nk_context *ctx, enum nk_symbol_type symbol, const char *label, nk_flags align) { return nk_button_symbol_text(ctx, symbol, label, nk_strlen(label), align); } NK_API int nk_button_symbol_label_styled(struct nk_context *ctx, const struct nk_style_button *style, enum nk_symbol_type symbol, const char *title, nk_flags align) { return nk_button_symbol_text_styled(ctx, style, symbol, title, nk_strlen(title), align); } NK_API int nk_button_image_text_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img, const char *text, int len, nk_flags align) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, bounds, img, text, len, align, ctx->button_behavior, style, ctx->style.font, in); } NK_API int nk_button_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { return nk_button_image_text_styled(ctx, &ctx->style.button,img, text, len, align); } NK_API int nk_button_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_button_image_text(ctx, img, label, nk_strlen(label), align); } NK_API int nk_button_image_label_styled(struct nk_context *ctx, const struct nk_style_button *style, struct nk_image img, const char *label, nk_flags text_alignment) { return nk_button_image_text_styled(ctx, style, img, label, nk_strlen(label), text_alignment); } ================================================ FILE: src/nuklear_chart.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * CHART * * ===============================================================*/ NK_API int nk_chart_begin_colored(struct nk_context *ctx, enum nk_chart_type type, struct nk_color color, struct nk_color highlight, int count, float min_value, float max_value) { struct nk_window *win; struct nk_chart *chart; const struct nk_style *config; const struct nk_style_chart *style; const struct nk_style_item *background; struct nk_rect bounds = {0, 0, 0, 0}; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; if (!nk_widget(&bounds, ctx)) { chart = &ctx->current->layout->chart; nk_zero(chart, sizeof(*chart)); return 0; } win = ctx->current; config = &ctx->style; chart = &win->layout->chart; style = &config->chart; /* setup basic generic chart */ nk_zero(chart, sizeof(*chart)); chart->x = bounds.x + style->padding.x; chart->y = bounds.y + style->padding.y; chart->w = bounds.w - 2 * style->padding.x; chart->h = bounds.h - 2 * style->padding.y; chart->w = NK_MAX(chart->w, 2 * style->padding.x); chart->h = NK_MAX(chart->h, 2 * style->padding.y); /* add first slot into chart */ {struct nk_chart_slot *slot = &chart->slots[chart->slot++]; slot->type = type; slot->count = count; slot->color = color; slot->highlight = highlight; slot->min = NK_MIN(min_value, max_value); slot->max = NK_MAX(min_value, max_value); slot->range = slot->max - slot->min;} /* draw chart background */ background = &style->background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, bounds, &background->data.image, nk_white); } else { nk_fill_rect(&win->buffer, bounds, style->rounding, style->border_color); nk_fill_rect(&win->buffer, nk_shrink_rect(bounds, style->border), style->rounding, style->background.data.color); } return 1; } NK_API int nk_chart_begin(struct nk_context *ctx, const enum nk_chart_type type, int count, float min_value, float max_value) { return nk_chart_begin_colored(ctx, type, ctx->style.chart.color, ctx->style.chart.selected_color, count, min_value, max_value); } NK_API void nk_chart_add_slot_colored(struct nk_context *ctx, const enum nk_chart_type type, struct nk_color color, struct nk_color highlight, int count, float min_value, float max_value) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(ctx->current->layout->chart.slot < NK_CHART_MAX_SLOT); if (!ctx || !ctx->current || !ctx->current->layout) return; if (ctx->current->layout->chart.slot >= NK_CHART_MAX_SLOT) return; /* add another slot into the graph */ {struct nk_chart *chart = &ctx->current->layout->chart; struct nk_chart_slot *slot = &chart->slots[chart->slot++]; slot->type = type; slot->count = count; slot->color = color; slot->highlight = highlight; slot->min = NK_MIN(min_value, max_value); slot->max = NK_MAX(min_value, max_value); slot->range = slot->max - slot->min;} } NK_API void nk_chart_add_slot(struct nk_context *ctx, const enum nk_chart_type type, int count, float min_value, float max_value) { nk_chart_add_slot_colored(ctx, type, ctx->style.chart.color, ctx->style.chart.selected_color, count, min_value, max_value); } NK_INTERN nk_flags nk_chart_push_line(struct nk_context *ctx, struct nk_window *win, struct nk_chart *g, float value, int slot) { struct nk_panel *layout = win->layout; const struct nk_input *i = &ctx->input; struct nk_command_buffer *out = &win->buffer; nk_flags ret = 0; struct nk_vec2 cur; struct nk_rect bounds; struct nk_color color; float step; float range; float ratio; NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); step = g->w / (float)g->slots[slot].count; range = g->slots[slot].max - g->slots[slot].min; ratio = (value - g->slots[slot].min) / range; if (g->slots[slot].index == 0) { /* first data point does not have a connection */ g->slots[slot].last.x = g->x; g->slots[slot].last.y = (g->y + g->h) - ratio * (float)g->h; bounds.x = g->slots[slot].last.x - 2; bounds.y = g->slots[slot].last.y - 2; bounds.w = bounds.h = 4; color = g->slots[slot].color; if (!(layout->flags & NK_WINDOW_ROM) && NK_INBOX(i->mouse.pos.x,i->mouse.pos.y, g->slots[slot].last.x-3, g->slots[slot].last.y-3, 6, 6)){ ret = nk_input_is_mouse_hovering_rect(i, bounds) ? NK_CHART_HOVERING : 0; ret |= (i->mouse.buttons[NK_BUTTON_LEFT].down && i->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = g->slots[slot].highlight; } nk_fill_rect(out, bounds, 0, color); g->slots[slot].index += 1; return ret; } /* draw a line between the last data point and the new one */ color = g->slots[slot].color; cur.x = g->x + (float)(step * (float)g->slots[slot].index); cur.y = (g->y + g->h) - (ratio * (float)g->h); nk_stroke_line(out, g->slots[slot].last.x, g->slots[slot].last.y, cur.x, cur.y, 1.0f, color); bounds.x = cur.x - 3; bounds.y = cur.y - 3; bounds.w = bounds.h = 6; /* user selection of current data point */ if (!(layout->flags & NK_WINDOW_ROM)) { if (nk_input_is_mouse_hovering_rect(i, bounds)) { ret = NK_CHART_HOVERING; ret |= (!i->mouse.buttons[NK_BUTTON_LEFT].down && i->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = g->slots[slot].highlight; } } nk_fill_rect(out, nk_rect(cur.x - 2, cur.y - 2, 4, 4), 0, color); /* save current data point position */ g->slots[slot].last.x = cur.x; g->slots[slot].last.y = cur.y; g->slots[slot].index += 1; return ret; } NK_INTERN nk_flags nk_chart_push_column(const struct nk_context *ctx, struct nk_window *win, struct nk_chart *chart, float value, int slot) { struct nk_command_buffer *out = &win->buffer; const struct nk_input *in = &ctx->input; struct nk_panel *layout = win->layout; float ratio; nk_flags ret = 0; struct nk_color color; struct nk_rect item = {0,0,0,0}; NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); if (chart->slots[slot].index >= chart->slots[slot].count) return nk_false; if (chart->slots[slot].count) { float padding = (float)(chart->slots[slot].count-1); item.w = (chart->w - padding) / (float)(chart->slots[slot].count); } /* calculate bounds of current bar chart entry */ color = chart->slots[slot].color;; item.h = chart->h * NK_ABS((value/chart->slots[slot].range)); if (value >= 0) { ratio = (value + NK_ABS(chart->slots[slot].min)) / NK_ABS(chart->slots[slot].range); item.y = (chart->y + chart->h) - chart->h * ratio; } else { ratio = (value - chart->slots[slot].max) / chart->slots[slot].range; item.y = chart->y + (chart->h * NK_ABS(ratio)) - item.h; } item.x = chart->x + ((float)chart->slots[slot].index * item.w); item.x = item.x + ((float)chart->slots[slot].index); /* user chart bar selection */ if (!(layout->flags & NK_WINDOW_ROM) && NK_INBOX(in->mouse.pos.x,in->mouse.pos.y,item.x,item.y,item.w,item.h)) { ret = NK_CHART_HOVERING; ret |= (!in->mouse.buttons[NK_BUTTON_LEFT].down && in->mouse.buttons[NK_BUTTON_LEFT].clicked) ? NK_CHART_CLICKED: 0; color = chart->slots[slot].highlight; } nk_fill_rect(out, item, 0, color); chart->slots[slot].index += 1; return ret; } NK_API nk_flags nk_chart_push_slot(struct nk_context *ctx, float value, int slot) { nk_flags flags; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(slot >= 0 && slot < NK_CHART_MAX_SLOT); NK_ASSERT(slot < ctx->current->layout->chart.slot); if (!ctx || !ctx->current || slot >= NK_CHART_MAX_SLOT) return nk_false; if (slot >= ctx->current->layout->chart.slot) return nk_false; win = ctx->current; if (win->layout->chart.slot < slot) return nk_false; switch (win->layout->chart.slots[slot].type) { case NK_CHART_LINES: flags = nk_chart_push_line(ctx, win, &win->layout->chart, value, slot); break; case NK_CHART_COLUMN: flags = nk_chart_push_column(ctx, win, &win->layout->chart, value, slot); break; default: case NK_CHART_MAX: flags = 0; } return flags; } NK_API nk_flags nk_chart_push(struct nk_context *ctx, float value) { return nk_chart_push_slot(ctx, value, 0); } NK_API void nk_chart_end(struct nk_context *ctx) { struct nk_window *win; struct nk_chart *chart; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; chart = &win->layout->chart; NK_MEMSET(chart, 0, sizeof(*chart)); return; } NK_API void nk_plot(struct nk_context *ctx, enum nk_chart_type type, const float *values, int count, int offset) { int i = 0; float min_value; float max_value; NK_ASSERT(ctx); NK_ASSERT(values); if (!ctx || !values || !count) return; min_value = values[offset]; max_value = values[offset]; for (i = 0; i < count; ++i) { min_value = NK_MIN(values[i + offset], min_value); max_value = NK_MAX(values[i + offset], max_value); } if (nk_chart_begin(ctx, type, count, min_value, max_value)) { for (i = 0; i < count; ++i) nk_chart_push(ctx, values[i + offset]); nk_chart_end(ctx); } } NK_API void nk_plot_function(struct nk_context *ctx, enum nk_chart_type type, void *userdata, float(*value_getter)(void* user, int index), int count, int offset) { int i = 0; float min_value; float max_value; NK_ASSERT(ctx); NK_ASSERT(value_getter); if (!ctx || !value_getter || !count) return; max_value = min_value = value_getter(userdata, offset); for (i = 0; i < count; ++i) { float value = value_getter(userdata, i + offset); min_value = NK_MIN(value, min_value); max_value = NK_MAX(value, max_value); } if (nk_chart_begin(ctx, type, count, min_value, max_value)) { for (i = 0; i < count; ++i) nk_chart_push(ctx, value_getter(userdata, i + offset)); nk_chart_end(ctx); } } ================================================ FILE: src/nuklear_color.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * COLOR * * ===============================================================*/ NK_INTERN int nk_parse_hex(const char *p, int length) { int i = 0; int len = 0; while (len < length) { i <<= 4; if (p[len] >= 'a' && p[len] <= 'f') i += ((p[len] - 'a') + 10); else if (p[len] >= 'A' && p[len] <= 'F') i += ((p[len] - 'A') + 10); else i += (p[len] - '0'); len++; } return i; } NK_API struct nk_color nk_rgba(int r, int g, int b, int a) { struct nk_color ret; ret.r = (nk_byte)NK_CLAMP(0, r, 255); ret.g = (nk_byte)NK_CLAMP(0, g, 255); ret.b = (nk_byte)NK_CLAMP(0, b, 255); ret.a = (nk_byte)NK_CLAMP(0, a, 255); return ret; } NK_API struct nk_color nk_rgb_hex(const char *rgb) { struct nk_color col; const char *c = rgb; if (*c == '#') c++; col.r = (nk_byte)nk_parse_hex(c, 2); col.g = (nk_byte)nk_parse_hex(c+2, 2); col.b = (nk_byte)nk_parse_hex(c+4, 2); col.a = 255; return col; } NK_API struct nk_color nk_rgba_hex(const char *rgb) { struct nk_color col; const char *c = rgb; if (*c == '#') c++; col.r = (nk_byte)nk_parse_hex(c, 2); col.g = (nk_byte)nk_parse_hex(c+2, 2); col.b = (nk_byte)nk_parse_hex(c+4, 2); col.a = (nk_byte)nk_parse_hex(c+6, 2); return col; } NK_API void nk_color_hex_rgba(char *output, struct nk_color col) { #define NK_TO_HEX(i) ((i) <= 9 ? '0' + (i): 'A' - 10 + (i)) output[0] = (char)NK_TO_HEX((col.r & 0xF0) >> 4); output[1] = (char)NK_TO_HEX((col.r & 0x0F)); output[2] = (char)NK_TO_HEX((col.g & 0xF0) >> 4); output[3] = (char)NK_TO_HEX((col.g & 0x0F)); output[4] = (char)NK_TO_HEX((col.b & 0xF0) >> 4); output[5] = (char)NK_TO_HEX((col.b & 0x0F)); output[6] = (char)NK_TO_HEX((col.a & 0xF0) >> 4); output[7] = (char)NK_TO_HEX((col.a & 0x0F)); output[8] = '\0'; #undef NK_TO_HEX } NK_API void nk_color_hex_rgb(char *output, struct nk_color col) { #define NK_TO_HEX(i) ((i) <= 9 ? '0' + (i): 'A' - 10 + (i)) output[0] = (char)NK_TO_HEX((col.r & 0xF0) >> 4); output[1] = (char)NK_TO_HEX((col.r & 0x0F)); output[2] = (char)NK_TO_HEX((col.g & 0xF0) >> 4); output[3] = (char)NK_TO_HEX((col.g & 0x0F)); output[4] = (char)NK_TO_HEX((col.b & 0xF0) >> 4); output[5] = (char)NK_TO_HEX((col.b & 0x0F)); output[6] = '\0'; #undef NK_TO_HEX } NK_API struct nk_color nk_rgba_iv(const int *c) { return nk_rgba(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgba_bv(const nk_byte *c) { return nk_rgba(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgb(int r, int g, int b) { struct nk_color ret; ret.r = (nk_byte)NK_CLAMP(0, r, 255); ret.g = (nk_byte)NK_CLAMP(0, g, 255); ret.b = (nk_byte)NK_CLAMP(0, b, 255); ret.a = (nk_byte)255; return ret; } NK_API struct nk_color nk_rgb_iv(const int *c) { return nk_rgb(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgb_bv(const nk_byte* c) { return nk_rgb(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgba_u32(nk_uint in) { struct nk_color ret; ret.r = (in & 0xFF); ret.g = ((in >> 8) & 0xFF); ret.b = ((in >> 16) & 0xFF); ret.a = (nk_byte)((in >> 24) & 0xFF); return ret; } NK_API struct nk_color nk_rgba_f(float r, float g, float b, float a) { struct nk_color ret; ret.r = (nk_byte)(NK_SATURATE(r) * 255.0f); ret.g = (nk_byte)(NK_SATURATE(g) * 255.0f); ret.b = (nk_byte)(NK_SATURATE(b) * 255.0f); ret.a = (nk_byte)(NK_SATURATE(a) * 255.0f); return ret; } NK_API struct nk_color nk_rgba_fv(const float *c) { return nk_rgba_f(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_rgba_cf(struct nk_colorf c) { return nk_rgba_f(c.r, c.g, c.b, c.a); } NK_API struct nk_color nk_rgb_f(float r, float g, float b) { struct nk_color ret; ret.r = (nk_byte)(NK_SATURATE(r) * 255.0f); ret.g = (nk_byte)(NK_SATURATE(g) * 255.0f); ret.b = (nk_byte)(NK_SATURATE(b) * 255.0f); ret.a = 255; return ret; } NK_API struct nk_color nk_rgb_fv(const float *c) { return nk_rgb_f(c[0], c[1], c[2]); } NK_API struct nk_color nk_rgb_cf(struct nk_colorf c) { return nk_rgb_f(c.r, c.g, c.b); } NK_API struct nk_color nk_hsv(int h, int s, int v) { return nk_hsva(h, s, v, 255); } NK_API struct nk_color nk_hsv_iv(const int *c) { return nk_hsv(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsv_bv(const nk_byte *c) { return nk_hsv(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsv_f(float h, float s, float v) { return nk_hsva_f(h, s, v, 1.0f); } NK_API struct nk_color nk_hsv_fv(const float *c) { return nk_hsv_f(c[0], c[1], c[2]); } NK_API struct nk_color nk_hsva(int h, int s, int v, int a) { float hf = ((float)NK_CLAMP(0, h, 255)) / 255.0f; float sf = ((float)NK_CLAMP(0, s, 255)) / 255.0f; float vf = ((float)NK_CLAMP(0, v, 255)) / 255.0f; float af = ((float)NK_CLAMP(0, a, 255)) / 255.0f; return nk_hsva_f(hf, sf, vf, af); } NK_API struct nk_color nk_hsva_iv(const int *c) { return nk_hsva(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_hsva_bv(const nk_byte *c) { return nk_hsva(c[0], c[1], c[2], c[3]); } NK_API struct nk_colorf nk_hsva_colorf(float h, float s, float v, float a) { int i; float p, q, t, f; struct nk_colorf out = {0,0,0,0}; if (s <= 0.0f) { out.r = v; out.g = v; out.b = v; out.a = a; return out; } h = h / (60.0f/360.0f); i = (int)h; f = h - (float)i; p = v * (1.0f - s); q = v * (1.0f - (s * f)); t = v * (1.0f - s * (1.0f - f)); switch (i) { case 0: default: out.r = v; out.g = t; out.b = p; break; case 1: out.r = q; out.g = v; out.b = p; break; case 2: out.r = p; out.g = v; out.b = t; break; case 3: out.r = p; out.g = q; out.b = v; break; case 4: out.r = t; out.g = p; out.b = v; break; case 5: out.r = v; out.g = p; out.b = q; break;} out.a = a; return out; } NK_API struct nk_colorf nk_hsva_colorfv(float *c) { return nk_hsva_colorf(c[0], c[1], c[2], c[3]); } NK_API struct nk_color nk_hsva_f(float h, float s, float v, float a) { struct nk_colorf c = nk_hsva_colorf(h, s, v, a); return nk_rgba_f(c.r, c.g, c.b, c.a); } NK_API struct nk_color nk_hsva_fv(const float *c) { return nk_hsva_f(c[0], c[1], c[2], c[3]); } NK_API nk_uint nk_color_u32(struct nk_color in) { nk_uint out = (nk_uint)in.r; out |= ((nk_uint)in.g << 8); out |= ((nk_uint)in.b << 16); out |= ((nk_uint)in.a << 24); return out; } NK_API void nk_color_f(float *r, float *g, float *b, float *a, struct nk_color in) { NK_STORAGE const float s = 1.0f/255.0f; *r = (float)in.r * s; *g = (float)in.g * s; *b = (float)in.b * s; *a = (float)in.a * s; } NK_API void nk_color_fv(float *c, struct nk_color in) { nk_color_f(&c[0], &c[1], &c[2], &c[3], in); } NK_API struct nk_colorf nk_color_cf(struct nk_color in) { struct nk_colorf o; nk_color_f(&o.r, &o.g, &o.b, &o.a, in); return o; } NK_API void nk_color_d(double *r, double *g, double *b, double *a, struct nk_color in) { NK_STORAGE const double s = 1.0/255.0; *r = (double)in.r * s; *g = (double)in.g * s; *b = (double)in.b * s; *a = (double)in.a * s; } NK_API void nk_color_dv(double *c, struct nk_color in) { nk_color_d(&c[0], &c[1], &c[2], &c[3], in); } NK_API void nk_color_hsv_f(float *out_h, float *out_s, float *out_v, struct nk_color in) { float a; nk_color_hsva_f(out_h, out_s, out_v, &a, in); } NK_API void nk_color_hsv_fv(float *out, struct nk_color in) { float a; nk_color_hsva_f(&out[0], &out[1], &out[2], &a, in); } NK_API void nk_colorf_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_colorf in) { float chroma; float K = 0.0f; if (in.g < in.b) { const float t = in.g; in.g = in.b; in.b = t; K = -1.f; } if (in.r < in.g) { const float t = in.r; in.r = in.g; in.g = t; K = -2.f/6.0f - K; } chroma = in.r - ((in.g < in.b) ? in.g: in.b); *out_h = NK_ABS(K + (in.g - in.b)/(6.0f * chroma + 1e-20f)); *out_s = chroma / (in.r + 1e-20f); *out_v = in.r; *out_a = in.a; } NK_API void nk_colorf_hsva_fv(float *hsva, struct nk_colorf in) { nk_colorf_hsva_f(&hsva[0], &hsva[1], &hsva[2], &hsva[3], in); } NK_API void nk_color_hsva_f(float *out_h, float *out_s, float *out_v, float *out_a, struct nk_color in) { struct nk_colorf col; nk_color_f(&col.r,&col.g,&col.b,&col.a, in); nk_colorf_hsva_f(out_h, out_s, out_v, out_a, col); } NK_API void nk_color_hsva_fv(float *out, struct nk_color in) { nk_color_hsva_f(&out[0], &out[1], &out[2], &out[3], in); } NK_API void nk_color_hsva_i(int *out_h, int *out_s, int *out_v, int *out_a, struct nk_color in) { float h,s,v,a; nk_color_hsva_f(&h, &s, &v, &a, in); *out_h = (nk_byte)(h * 255.0f); *out_s = (nk_byte)(s * 255.0f); *out_v = (nk_byte)(v * 255.0f); *out_a = (nk_byte)(a * 255.0f); } NK_API void nk_color_hsva_iv(int *out, struct nk_color in) { nk_color_hsva_i(&out[0], &out[1], &out[2], &out[3], in); } NK_API void nk_color_hsva_bv(nk_byte *out, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); out[0] = (nk_byte)tmp[0]; out[1] = (nk_byte)tmp[1]; out[2] = (nk_byte)tmp[2]; out[3] = (nk_byte)tmp[3]; } NK_API void nk_color_hsva_b(nk_byte *h, nk_byte *s, nk_byte *v, nk_byte *a, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); *h = (nk_byte)tmp[0]; *s = (nk_byte)tmp[1]; *v = (nk_byte)tmp[2]; *a = (nk_byte)tmp[3]; } NK_API void nk_color_hsv_i(int *out_h, int *out_s, int *out_v, struct nk_color in) { int a; nk_color_hsva_i(out_h, out_s, out_v, &a, in); } NK_API void nk_color_hsv_b(nk_byte *out_h, nk_byte *out_s, nk_byte *out_v, struct nk_color in) { int tmp[4]; nk_color_hsva_i(&tmp[0], &tmp[1], &tmp[2], &tmp[3], in); *out_h = (nk_byte)tmp[0]; *out_s = (nk_byte)tmp[1]; *out_v = (nk_byte)tmp[2]; } NK_API void nk_color_hsv_iv(int *out, struct nk_color in) { nk_color_hsv_i(&out[0], &out[1], &out[2], in); } NK_API void nk_color_hsv_bv(nk_byte *out, struct nk_color in) { int tmp[4]; nk_color_hsv_i(&tmp[0], &tmp[1], &tmp[2], in); out[0] = (nk_byte)tmp[0]; out[1] = (nk_byte)tmp[1]; out[2] = (nk_byte)tmp[2]; } ================================================ FILE: src/nuklear_color_picker.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * COLOR PICKER * * ===============================================================*/ NK_LIB int nk_color_picker_behavior(nk_flags *state, const struct nk_rect *bounds, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf *color, const struct nk_input *in) { float hsva[4]; int value_changed = 0; int hsv_changed = 0; NK_ASSERT(state); NK_ASSERT(matrix); NK_ASSERT(hue_bar); NK_ASSERT(color); /* color matrix */ nk_colorf_hsva_fv(hsva, *color); if (nk_button_behavior(state, *matrix, in, NK_BUTTON_REPEATER)) { hsva[1] = NK_SATURATE((in->mouse.pos.x - matrix->x) / (matrix->w-1)); hsva[2] = 1.0f - NK_SATURATE((in->mouse.pos.y - matrix->y) / (matrix->h-1)); value_changed = hsv_changed = 1; } /* hue bar */ if (nk_button_behavior(state, *hue_bar, in, NK_BUTTON_REPEATER)) { hsva[0] = NK_SATURATE((in->mouse.pos.y - hue_bar->y) / (hue_bar->h-1)); value_changed = hsv_changed = 1; } /* alpha bar */ if (alpha_bar) { if (nk_button_behavior(state, *alpha_bar, in, NK_BUTTON_REPEATER)) { hsva[3] = 1.0f - NK_SATURATE((in->mouse.pos.y - alpha_bar->y) / (alpha_bar->h-1)); value_changed = 1; } } nk_widget_state_reset(state); if (hsv_changed) { *color = nk_hsva_colorfv(hsva); *state = NK_WIDGET_STATE_ACTIVE; } if (value_changed) { color->a = hsva[3]; *state = NK_WIDGET_STATE_ACTIVE; } /* set color picker widget state */ if (nk_input_is_mouse_hovering_rect(in, *bounds)) *state = NK_WIDGET_STATE_HOVERED; if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, *bounds)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, *bounds)) *state |= NK_WIDGET_STATE_LEFT; return value_changed; } NK_LIB void nk_draw_color_picker(struct nk_command_buffer *o, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf col) { NK_STORAGE const struct nk_color black = {0,0,0,255}; NK_STORAGE const struct nk_color white = {255, 255, 255, 255}; NK_STORAGE const struct nk_color black_trans = {0,0,0,0}; const float crosshair_size = 7.0f; struct nk_color temp; float hsva[4]; float line_y; int i; NK_ASSERT(o); NK_ASSERT(matrix); NK_ASSERT(hue_bar); /* draw hue bar */ nk_colorf_hsva_fv(hsva, col); for (i = 0; i < 6; ++i) { NK_GLOBAL const struct nk_color hue_colors[] = { {255, 0, 0, 255}, {255,255,0,255}, {0,255,0,255}, {0, 255,255,255}, {0,0,255,255}, {255, 0, 255, 255}, {255, 0, 0, 255} }; nk_fill_rect_multi_color(o, nk_rect(hue_bar->x, hue_bar->y + (float)i * (hue_bar->h/6.0f) + 0.5f, hue_bar->w, (hue_bar->h/6.0f) + 0.5f), hue_colors[i], hue_colors[i], hue_colors[i+1], hue_colors[i+1]); } line_y = (float)(int)(hue_bar->y + hsva[0] * matrix->h + 0.5f); nk_stroke_line(o, hue_bar->x-1, line_y, hue_bar->x + hue_bar->w + 2, line_y, 1, nk_rgb(255,255,255)); /* draw alpha bar */ if (alpha_bar) { float alpha = NK_SATURATE(col.a); line_y = (float)(int)(alpha_bar->y + (1.0f - alpha) * matrix->h + 0.5f); nk_fill_rect_multi_color(o, *alpha_bar, white, white, black, black); nk_stroke_line(o, alpha_bar->x-1, line_y, alpha_bar->x + alpha_bar->w + 2, line_y, 1, nk_rgb(255,255,255)); } /* draw color matrix */ temp = nk_hsv_f(hsva[0], 1.0f, 1.0f); nk_fill_rect_multi_color(o, *matrix, white, temp, temp, white); nk_fill_rect_multi_color(o, *matrix, black_trans, black_trans, black, black); /* draw cross-hair */ {struct nk_vec2 p; float S = hsva[1]; float V = hsva[2]; p.x = (float)(int)(matrix->x + S * matrix->w); p.y = (float)(int)(matrix->y + (1.0f - V) * matrix->h); nk_stroke_line(o, p.x - crosshair_size, p.y, p.x-2, p.y, 1.0f, white); nk_stroke_line(o, p.x + crosshair_size + 1, p.y, p.x+3, p.y, 1.0f, white); nk_stroke_line(o, p.x, p.y + crosshair_size + 1, p.x, p.y+3, 1.0f, white); nk_stroke_line(o, p.x, p.y - crosshair_size, p.x, p.y-2, 1.0f, white);} } NK_LIB int nk_do_color_picker(nk_flags *state, struct nk_command_buffer *out, struct nk_colorf *col, enum nk_color_format fmt, struct nk_rect bounds, struct nk_vec2 padding, const struct nk_input *in, const struct nk_user_font *font) { int ret = 0; struct nk_rect matrix; struct nk_rect hue_bar; struct nk_rect alpha_bar; float bar_w; NK_ASSERT(out); NK_ASSERT(col); NK_ASSERT(state); NK_ASSERT(font); if (!out || !col || !state || !font) return ret; bar_w = font->height; bounds.x += padding.x; bounds.y += padding.x; bounds.w -= 2 * padding.x; bounds.h -= 2 * padding.y; matrix.x = bounds.x; matrix.y = bounds.y; matrix.h = bounds.h; matrix.w = bounds.w - (3 * padding.x + 2 * bar_w); hue_bar.w = bar_w; hue_bar.y = bounds.y; hue_bar.h = matrix.h; hue_bar.x = matrix.x + matrix.w + padding.x; alpha_bar.x = hue_bar.x + hue_bar.w + padding.x; alpha_bar.y = bounds.y; alpha_bar.w = bar_w; alpha_bar.h = matrix.h; ret = nk_color_picker_behavior(state, &bounds, &matrix, &hue_bar, (fmt == NK_RGBA) ? &alpha_bar:0, col, in); nk_draw_color_picker(out, &matrix, &hue_bar, (fmt == NK_RGBA) ? &alpha_bar:0, *col); return ret; } NK_API int nk_color_pick(struct nk_context * ctx, struct nk_colorf *color, enum nk_color_format fmt) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *config; const struct nk_input *in; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(color); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !color) return 0; win = ctx->current; config = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_color_picker(&ctx->last_widget_state, &win->buffer, color, fmt, bounds, nk_vec2(0,0), in, config->font); } NK_API struct nk_colorf nk_color_picker(struct nk_context *ctx, struct nk_colorf color, enum nk_color_format fmt) { nk_color_pick(ctx, &color, fmt); return color; } ================================================ FILE: src/nuklear_combo.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * COMBO * * ===============================================================*/ NK_INTERN int nk_combo_begin(struct nk_context *ctx, struct nk_window *win, struct nk_vec2 size, int is_clicked, struct nk_rect header) { struct nk_window *popup; int is_open = 0; int is_active = 0; struct nk_rect body; nk_hash hash; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; popup = win->popup.win; body.x = header.x; body.w = size.x; body.y = header.y + header.h-ctx->style.window.combo_border; body.h = size.y; hash = win->popup.combo_count++; is_open = (popup) ? nk_true:nk_false; is_active = (popup && (win->popup.name == hash) && win->popup.type == NK_PANEL_COMBO); if ((is_clicked && is_open && !is_active) || (is_open && !is_active) || (!is_open && !is_active && !is_clicked)) return 0; if (!nk_nonblock_begin(ctx, 0, body, (is_clicked && is_open)?nk_rect(0,0,0,0):header, NK_PANEL_COMBO)) return 0; win->popup.type = NK_PANEL_COMBO; win->popup.name = hash; return 1; } NK_API int nk_combo_begin_text(struct nk_context *ctx, const char *selected, int len, struct nk_vec2 size) { const struct nk_input *in; struct nk_window *win; struct nk_style *style; enum nk_widget_layout_states s; int is_clicked = nk_false; struct nk_rect header; const struct nk_style_item *background; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(selected); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !selected) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { /* print currently selected text item */ struct nk_rect label; struct nk_rect button; struct nk_rect content; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw selected label */ text.padding = nk_vec2(0,0); label.x = header.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = button.x - (style->combo.content_padding.x + style->combo.spacing.x) - label.x;; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, ctx->style.font); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_label(struct nk_context *ctx, const char *selected, struct nk_vec2 size) { return nk_combo_begin_text(ctx, selected, nk_strlen(selected), size); } NK_API int nk_combo_begin_color(struct nk_context *ctx, struct nk_color color, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) background = &style->combo.active; else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) background = &style->combo.hover; else background = &style->combo.normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, header, &background->data.image,nk_white); } else { nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect bounds; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw color */ bounds.h = header.h - 4 * style->combo.content_padding.y; bounds.y = header.y + 2 * style->combo.content_padding.y; bounds.x = header.x + 2 * style->combo.content_padding.x; bounds.w = (button.x - (style->combo.content_padding.x + style->combo.spacing.x)) - bounds.x; nk_fill_rect(&win->buffer, bounds, 0, color); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol(struct nk_context *ctx, enum nk_symbol_type symbol, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_color sym_background; struct nk_color symbol_color; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; symbol_color = style->combo.symbol_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; symbol_color = style->combo.symbol_hover; } else { background = &style->combo.normal; symbol_color = style->combo.symbol_hover; } if (background->type == NK_STYLE_ITEM_IMAGE) { sym_background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { sym_background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect bounds = {0,0,0,0}; struct nk_rect content; struct nk_rect button; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.y; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw symbol */ bounds.h = header.h - 2 * style->combo.content_padding.y; bounds.y = header.y + style->combo.content_padding.y; bounds.x = header.x + style->combo.content_padding.x; bounds.w = (button.x - style->combo.content_padding.y) - bounds.x; nk_draw_symbol(&win->buffer, symbol, bounds, sym_background, symbol_color, 1.0f, style->font); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol_text(struct nk_context *ctx, const char *selected, int len, enum nk_symbol_type symbol, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_color symbol_color; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (!s) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; symbol_color = style->combo.symbol_active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; symbol_color = style->combo.symbol_hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; symbol_color = style->combo.symbol_normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect label; struct nk_rect image; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); /* draw symbol */ image.x = header.x + style->combo.content_padding.x; image.y = header.y + style->combo.content_padding.y; image.h = header.h - 2 * style->combo.content_padding.y; image.w = image.h; nk_draw_symbol(&win->buffer, symbol, image, text.background, symbol_color, 1.0f, style->font); /* draw label */ text.padding = nk_vec2(0,0); label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = (button.x - style->combo.content_padding.x) - label.x; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_image(struct nk_context *ctx, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (s == NK_WIDGET_INVALID) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) background = &style->combo.active; else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) background = &style->combo.hover; else background = &style->combo.normal; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect bounds = {0,0,0,0}; struct nk_rect content; struct nk_rect button; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.y; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; /* draw image */ bounds.h = header.h - 2 * style->combo.content_padding.y; bounds.y = header.y + style->combo.content_padding.y; bounds.x = header.x + style->combo.content_padding.x; bounds.w = (button.x - style->combo.content_padding.y) - bounds.x; nk_draw_image(&win->buffer, bounds, &img, nk_white); /* draw open/close button */ nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_image_text(struct nk_context *ctx, const char *selected, int len, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_style *style; struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; enum nk_widget_layout_states s; const struct nk_style_item *background; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; s = nk_widget(&header, ctx); if (!s) return 0; in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input; if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT)) is_clicked = nk_true; /* draw combo box header background and border */ if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) { background = &style->combo.active; text.text = style->combo.label_active; } else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) { background = &style->combo.hover; text.text = style->combo.label_hover; } else { background = &style->combo.normal; text.text = style->combo.label_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color); nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color); } { struct nk_rect content; struct nk_rect button; struct nk_rect label; struct nk_rect image; enum nk_symbol_type sym; if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) sym = style->combo.sym_hover; else if (is_clicked) sym = style->combo.sym_active; else sym = style->combo.sym_normal; /* calculate button */ button.w = header.h - 2 * style->combo.button_padding.y; button.x = (header.x + header.w - header.h) - style->combo.button_padding.x; button.y = header.y + style->combo.button_padding.y; button.h = button.w; content.x = button.x + style->combo.button.padding.x; content.y = button.y + style->combo.button.padding.y; content.w = button.w - 2 * style->combo.button.padding.x; content.h = button.h - 2 * style->combo.button.padding.y; nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state, &ctx->style.combo.button, sym, style->font); /* draw image */ image.x = header.x + style->combo.content_padding.x; image.y = header.y + style->combo.content_padding.y; image.h = header.h - 2 * style->combo.content_padding.y; image.w = image.h; nk_draw_image(&win->buffer, image, &img, nk_white); /* draw label */ text.padding = nk_vec2(0,0); label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x; label.y = header.y + style->combo.content_padding.y; label.w = (button.x - style->combo.content_padding.x) - label.x; label.h = header.h - 2 * style->combo.content_padding.y; nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font); } return nk_combo_begin(ctx, win, size, is_clicked, header); } NK_API int nk_combo_begin_symbol_label(struct nk_context *ctx, const char *selected, enum nk_symbol_type type, struct nk_vec2 size) { return nk_combo_begin_symbol_text(ctx, selected, nk_strlen(selected), type, size); } NK_API int nk_combo_begin_image_label(struct nk_context *ctx, const char *selected, struct nk_image img, struct nk_vec2 size) { return nk_combo_begin_image_text(ctx, selected, nk_strlen(selected), img, size); } NK_API int nk_combo_item_text(struct nk_context *ctx, const char *text, int len,nk_flags align) { return nk_contextual_item_text(ctx, text, len, align); } NK_API int nk_combo_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_label(ctx, label, align); } NK_API int nk_combo_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags alignment) { return nk_contextual_item_image_text(ctx, img, text, len, alignment); } NK_API int nk_combo_item_image_label(struct nk_context *ctx, struct nk_image img, const char *text, nk_flags alignment) { return nk_contextual_item_image_label(ctx, img, text, alignment); } NK_API int nk_combo_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *text, int len, nk_flags alignment) { return nk_contextual_item_symbol_text(ctx, sym, text, len, alignment); } NK_API int nk_combo_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *label, nk_flags alignment) { return nk_contextual_item_symbol_label(ctx, sym, label, alignment); } NK_API void nk_combo_end(struct nk_context *ctx) { nk_contextual_end(ctx); } NK_API void nk_combo_close(struct nk_context *ctx) { nk_contextual_close(ctx); } NK_API int nk_combo(struct nk_context *ctx, const char **items, int count, int selected, int item_height, struct nk_vec2 size) { int i = 0; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; NK_ASSERT(ctx); NK_ASSERT(items); NK_ASSERT(ctx->current); if (!ctx || !items ||!count) return selected; item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); if (nk_combo_begin_label(ctx, items[selected], size)) { nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { if (nk_combo_item_label(ctx, items[i], NK_TEXT_LEFT)) selected = i; } nk_combo_end(ctx); } return selected; } NK_API int nk_combo_separator(struct nk_context *ctx, const char *items_separated_by_separator, int separator, int selected, int count, int item_height, struct nk_vec2 size) { int i; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; const char *current_item; const char *iter; int length = 0; NK_ASSERT(ctx); NK_ASSERT(items_separated_by_separator); if (!ctx || !items_separated_by_separator) return selected; /* calculate popup window */ item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); /* find selected item */ current_item = items_separated_by_separator; for (i = 0; i < count; ++i) { iter = current_item; while (*iter && *iter != separator) iter++; length = (int)(iter - current_item); if (i == selected) break; current_item = iter + 1; } if (nk_combo_begin_text(ctx, current_item, length, size)) { current_item = items_separated_by_separator; nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { iter = current_item; while (*iter && *iter != separator) iter++; length = (int)(iter - current_item); if (nk_combo_item_text(ctx, current_item, length, NK_TEXT_LEFT)) selected = i; current_item = current_item + length + 1; } nk_combo_end(ctx); } return selected; } NK_API int nk_combo_string(struct nk_context *ctx, const char *items_separated_by_zeros, int selected, int count, int item_height, struct nk_vec2 size) { return nk_combo_separator(ctx, items_separated_by_zeros, '\0', selected, count, item_height, size); } NK_API int nk_combo_callback(struct nk_context *ctx, void(*item_getter)(void*, int, const char**), void *userdata, int selected, int count, int item_height, struct nk_vec2 size) { int i; int max_height; struct nk_vec2 item_spacing; struct nk_vec2 window_padding; const char *item; NK_ASSERT(ctx); NK_ASSERT(item_getter); if (!ctx || !item_getter) return selected; /* calculate popup window */ item_spacing = ctx->style.window.spacing; window_padding = nk_panel_get_padding(&ctx->style, ctx->current->layout->type); max_height = count * item_height + count * (int)item_spacing.y; max_height += (int)item_spacing.y * 2 + (int)window_padding.y * 2; size.y = NK_MIN(size.y, (float)max_height); item_getter(userdata, selected, &item); if (nk_combo_begin_label(ctx, item, size)) { nk_layout_row_dynamic(ctx, (float)item_height, 1); for (i = 0; i < count; ++i) { item_getter(userdata, i, &item); if (nk_combo_item_label(ctx, item, NK_TEXT_LEFT)) selected = i; } nk_combo_end(ctx); } return selected; } NK_API void nk_combobox(struct nk_context *ctx, const char **items, int count, int *selected, int item_height, struct nk_vec2 size) { *selected = nk_combo(ctx, items, count, *selected, item_height, size); } NK_API void nk_combobox_string(struct nk_context *ctx, const char *items_separated_by_zeros, int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_string(ctx, items_separated_by_zeros, *selected, count, item_height, size); } NK_API void nk_combobox_separator(struct nk_context *ctx, const char *items_separated_by_separator, int separator,int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_separator(ctx, items_separated_by_separator, separator, *selected, count, item_height, size); } NK_API void nk_combobox_callback(struct nk_context *ctx, void(*item_getter)(void* data, int id, const char **out_text), void *userdata, int *selected, int count, int item_height, struct nk_vec2 size) { *selected = nk_combo_callback(ctx, item_getter, userdata, *selected, count, item_height, size); } ================================================ FILE: src/nuklear_context.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * CONTEXT * * ===============================================================*/ NK_INTERN void nk_setup(struct nk_context *ctx, const struct nk_user_font *font) { NK_ASSERT(ctx); if (!ctx) return; nk_zero_struct(*ctx); nk_style_default(ctx); ctx->seq = 1; if (font) ctx->style.font = font; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT nk_draw_list_init(&ctx->draw_list); #endif } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API int nk_init_default(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; return nk_init(ctx, &alloc, font); } #endif NK_API int nk_init_fixed(struct nk_context *ctx, void *memory, nk_size size, const struct nk_user_font *font) { NK_ASSERT(memory); if (!memory) return 0; nk_setup(ctx, font); nk_buffer_init_fixed(&ctx->memory, memory, size); ctx->use_pool = nk_false; return 1; } NK_API int nk_init_custom(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *pool, const struct nk_user_font *font) { NK_ASSERT(cmds); NK_ASSERT(pool); if (!cmds || !pool) return 0; nk_setup(ctx, font); ctx->memory = *cmds; if (pool->type == NK_BUFFER_FIXED) { /* take memory from buffer and alloc fixed pool */ nk_pool_init_fixed(&ctx->pool, pool->memory.ptr, pool->memory.size); } else { /* create dynamic pool from buffer allocator */ struct nk_allocator *alloc = &pool->pool; nk_pool_init(&ctx->pool, alloc, NK_POOL_DEFAULT_CAPACITY); } ctx->use_pool = nk_true; return 1; } NK_API int nk_init(struct nk_context *ctx, struct nk_allocator *alloc, const struct nk_user_font *font) { NK_ASSERT(alloc); if (!alloc) return 0; nk_setup(ctx, font); nk_buffer_init(&ctx->memory, alloc, NK_DEFAULT_COMMAND_BUFFER_SIZE); nk_pool_init(&ctx->pool, alloc, NK_POOL_DEFAULT_CAPACITY); ctx->use_pool = nk_true; return 1; } #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_set_user_data(struct nk_context *ctx, nk_handle handle) { if (!ctx) return; ctx->userdata = handle; if (ctx->current) ctx->current->buffer.userdata = handle; } #endif NK_API void nk_free(struct nk_context *ctx) { NK_ASSERT(ctx); if (!ctx) return; nk_buffer_free(&ctx->memory); if (ctx->use_pool) nk_pool_free(&ctx->pool); nk_zero(&ctx->input, sizeof(ctx->input)); nk_zero(&ctx->style, sizeof(ctx->style)); nk_zero(&ctx->memory, sizeof(ctx->memory)); ctx->seq = 0; ctx->build = 0; ctx->begin = 0; ctx->end = 0; ctx->active = 0; ctx->current = 0; ctx->freelist = 0; ctx->count = 0; } NK_API void nk_clear(struct nk_context *ctx) { struct nk_window *iter; struct nk_window *next; NK_ASSERT(ctx); if (!ctx) return; if (ctx->use_pool) nk_buffer_clear(&ctx->memory); else nk_buffer_reset(&ctx->memory, NK_BUFFER_FRONT); ctx->build = 0; ctx->memory.calls = 0; ctx->last_widget_state = 0; ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_ARROW]; NK_MEMSET(&ctx->overlay, 0, sizeof(ctx->overlay)); /* garbage collector */ iter = ctx->begin; while (iter) { /* make sure valid minimized windows do not get removed */ if ((iter->flags & NK_WINDOW_MINIMIZED) && !(iter->flags & NK_WINDOW_CLOSED) && iter->seq == ctx->seq) { iter = iter->next; continue; } /* remove hotness from hidden or closed windows*/ if (((iter->flags & NK_WINDOW_HIDDEN) || (iter->flags & NK_WINDOW_CLOSED)) && iter == ctx->active) { ctx->active = iter->prev; ctx->end = iter->prev; if (!ctx->end) ctx->begin = 0; if (ctx->active) ctx->active->flags &= ~(unsigned)NK_WINDOW_ROM; } /* free unused popup windows */ if (iter->popup.win && iter->popup.win->seq != ctx->seq) { nk_free_window(ctx, iter->popup.win); iter->popup.win = 0; } /* remove unused window state tables */ {struct nk_table *n, *it = iter->tables; while (it) { n = it->next; if (it->seq != ctx->seq) { nk_remove_table(iter, it); nk_zero(it, sizeof(union nk_page_data)); nk_free_table(ctx, it); if (it == iter->tables) iter->tables = n; } it = n; }} /* window itself is not used anymore so free */ if (iter->seq != ctx->seq || iter->flags & NK_WINDOW_CLOSED) { next = iter->next; nk_remove_window(ctx, iter); nk_free_window(ctx, iter); iter = next; } else iter = iter->next; } ctx->seq++; } NK_LIB void nk_start_buffer(struct nk_context *ctx, struct nk_command_buffer *buffer) { NK_ASSERT(ctx); NK_ASSERT(buffer); if (!ctx || !buffer) return; buffer->begin = ctx->memory.allocated; buffer->end = buffer->begin; buffer->last = buffer->begin; buffer->clip = nk_null_rect; } NK_LIB void nk_start(struct nk_context *ctx, struct nk_window *win) { NK_ASSERT(ctx); NK_ASSERT(win); nk_start_buffer(ctx, &win->buffer); } NK_LIB void nk_start_popup(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; /* save buffer fill state for popup */ buf = &win->popup.buf; buf->begin = win->buffer.end; buf->end = win->buffer.end; buf->parent = win->buffer.last; buf->last = buf->begin; buf->active = nk_true; } NK_LIB void nk_finish_popup(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; buf = &win->popup.buf; buf->last = win->buffer.last; buf->end = win->buffer.end; } NK_LIB void nk_finish_buffer(struct nk_context *ctx, struct nk_command_buffer *buffer) { NK_ASSERT(ctx); NK_ASSERT(buffer); if (!ctx || !buffer) return; buffer->end = ctx->memory.allocated; } NK_LIB void nk_finish(struct nk_context *ctx, struct nk_window *win) { struct nk_popup_buffer *buf; struct nk_command *parent_last; void *memory; NK_ASSERT(ctx); NK_ASSERT(win); if (!ctx || !win) return; nk_finish_buffer(ctx, &win->buffer); if (!win->popup.buf.active) return; buf = &win->popup.buf; memory = ctx->memory.memory.ptr; parent_last = nk_ptr_add(struct nk_command, memory, buf->parent); parent_last->next = buf->end; } NK_LIB void nk_build(struct nk_context *ctx) { struct nk_window *it = 0; struct nk_command *cmd = 0; nk_byte *buffer = 0; /* draw cursor overlay */ if (!ctx->style.cursor_active) ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_ARROW]; if (ctx->style.cursor_active && !ctx->input.mouse.grabbed && ctx->style.cursor_visible) { struct nk_rect mouse_bounds; const struct nk_cursor *cursor = ctx->style.cursor_active; nk_command_buffer_init(&ctx->overlay, &ctx->memory, NK_CLIPPING_OFF); nk_start_buffer(ctx, &ctx->overlay); mouse_bounds.x = ctx->input.mouse.pos.x - cursor->offset.x; mouse_bounds.y = ctx->input.mouse.pos.y - cursor->offset.y; mouse_bounds.w = cursor->size.x; mouse_bounds.h = cursor->size.y; nk_draw_image(&ctx->overlay, mouse_bounds, &cursor->img, nk_white); nk_finish_buffer(ctx, &ctx->overlay); } /* build one big draw command list out of all window buffers */ it = ctx->begin; buffer = (nk_byte*)ctx->memory.memory.ptr; while (it != 0) { struct nk_window *next = it->next; if (it->buffer.last == it->buffer.begin || (it->flags & NK_WINDOW_HIDDEN)|| it->seq != ctx->seq) goto cont; cmd = nk_ptr_add(struct nk_command, buffer, it->buffer.last); while (next && ((next->buffer.last == next->buffer.begin) || (next->flags & NK_WINDOW_HIDDEN) || next->seq != ctx->seq)) next = next->next; /* skip empty command buffers */ if (next) cmd->next = next->buffer.begin; cont: it = next; } /* append all popup draw commands into lists */ it = ctx->begin; while (it != 0) { struct nk_window *next = it->next; struct nk_popup_buffer *buf; if (!it->popup.buf.active) goto skip; buf = &it->popup.buf; cmd->next = buf->begin; cmd = nk_ptr_add(struct nk_command, buffer, buf->last); buf->active = nk_false; skip: it = next; } if (cmd) { /* append overlay commands */ if (ctx->overlay.end != ctx->overlay.begin) cmd->next = ctx->overlay.begin; else cmd->next = ctx->memory.allocated; } } NK_API const struct nk_command* nk__begin(struct nk_context *ctx) { struct nk_window *iter; nk_byte *buffer; NK_ASSERT(ctx); if (!ctx) return 0; if (!ctx->count) return 0; buffer = (nk_byte*)ctx->memory.memory.ptr; if (!ctx->build) { nk_build(ctx); ctx->build = nk_true; } iter = ctx->begin; while (iter && ((iter->buffer.begin == iter->buffer.end) || (iter->flags & NK_WINDOW_HIDDEN) || iter->seq != ctx->seq)) iter = iter->next; if (!iter) return 0; return nk_ptr_add_const(struct nk_command, buffer, iter->buffer.begin); } NK_API const struct nk_command* nk__next(struct nk_context *ctx, const struct nk_command *cmd) { nk_byte *buffer; const struct nk_command *next; NK_ASSERT(ctx); if (!ctx || !cmd || !ctx->count) return 0; if (cmd->next >= ctx->memory.allocated) return 0; buffer = (nk_byte*)ctx->memory.memory.ptr; next = nk_ptr_add_const(struct nk_command, buffer, cmd->next); return next; } ================================================ FILE: src/nuklear_contextual.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * CONTEXTUAL * * ===============================================================*/ NK_API int nk_contextual_begin(struct nk_context *ctx, nk_flags flags, struct nk_vec2 size, struct nk_rect trigger_bounds) { struct nk_window *win; struct nk_window *popup; struct nk_rect body; NK_STORAGE const struct nk_rect null_rect = {-1,-1,0,0}; int is_clicked = 0; int is_open = 0; int ret = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; ++win->popup.con_count; if (ctx->current != ctx->active) return 0; /* check if currently active contextual is active */ popup = win->popup.win; is_open = (popup && win->popup.type == NK_PANEL_CONTEXTUAL); is_clicked = nk_input_mouse_clicked(&ctx->input, NK_BUTTON_RIGHT, trigger_bounds); if (win->popup.active_con && win->popup.con_count != win->popup.active_con) return 0; if (!is_open && win->popup.active_con) win->popup.active_con = 0; if ((!is_open && !is_clicked)) return 0; /* calculate contextual position on click */ win->popup.active_con = win->popup.con_count; if (is_clicked) { body.x = ctx->input.mouse.pos.x; body.y = ctx->input.mouse.pos.y; } else { body.x = popup->bounds.x; body.y = popup->bounds.y; } body.w = size.x; body.h = size.y; /* start nonblocking contextual popup */ ret = nk_nonblock_begin(ctx, flags|NK_WINDOW_NO_SCROLLBAR, body, null_rect, NK_PANEL_CONTEXTUAL); if (ret) win->popup.type = NK_PANEL_CONTEXTUAL; else { win->popup.active_con = 0; win->popup.type = NK_PANEL_NONE; if (win->popup.win) win->popup.win->flags = 0; } return ret; } NK_API int nk_contextual_item_text(struct nk_context *ctx, const char *text, int len, nk_flags alignment) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text(&ctx->last_widget_state, &win->buffer, bounds, text, len, alignment, NK_BUTTON_DEFAULT, &style->contextual_button, in, style->font)) { nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_text(ctx, label, nk_strlen(label), align); } NK_API int nk_contextual_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, bounds, img, text, len, align, NK_BUTTON_DEFAULT, &style->contextual_button, style->font, in)){ nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_contextual_item_image_text(ctx, img, label, nk_strlen(label), align); } NK_API int nk_contextual_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type symbol, const char *text, int len, nk_flags align) { struct nk_window *win; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget_fitting(&bounds, ctx, style->contextual_button.padding); if (!state) return nk_false; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, bounds, symbol, text, len, align, NK_BUTTON_DEFAULT, &style->contextual_button, style->font, in)) { nk_contextual_close(ctx); return nk_true; } return nk_false; } NK_API int nk_contextual_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type symbol, const char *text, nk_flags align) { return nk_contextual_item_symbol_text(ctx, symbol, text, nk_strlen(text), align); } NK_API void nk_contextual_close(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; nk_popup_close(ctx); } NK_API void nk_contextual_end(struct nk_context *ctx) { struct nk_window *popup; struct nk_panel *panel; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; popup = ctx->current; panel = popup->layout; NK_ASSERT(popup->parent); NK_ASSERT(panel->type & NK_PANEL_SET_POPUP); if (panel->flags & NK_WINDOW_DYNAMIC) { /* Close behavior This is a bit of a hack solution since we do not know before we end our popup how big it will be. We therefore do not directly know when a click outside the non-blocking popup must close it at that direct frame. Instead it will be closed in the next frame.*/ struct nk_rect body = {0,0,0,0}; if (panel->at_y < (panel->bounds.y + panel->bounds.h)) { struct nk_vec2 padding = nk_panel_get_padding(&ctx->style, panel->type); body = panel->bounds; body.y = (panel->at_y + panel->footer_height + panel->border + padding.y + panel->row.height); body.h = (panel->bounds.y + panel->bounds.h) - body.y; } {int pressed = nk_input_is_mouse_pressed(&ctx->input, NK_BUTTON_LEFT); int in_body = nk_input_is_mouse_hovering_rect(&ctx->input, body); if (pressed && in_body) popup->flags |= NK_WINDOW_HIDDEN; } } if (popup->flags & NK_WINDOW_HIDDEN) popup->seq = 0; nk_popup_end(ctx); return; } ================================================ FILE: src/nuklear_draw.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* ============================================================== * * DRAW * * ===============================================================*/ NK_LIB void nk_command_buffer_init(struct nk_command_buffer *cb, struct nk_buffer *b, enum nk_command_clipping clip) { NK_ASSERT(cb); NK_ASSERT(b); if (!cb || !b) return; cb->base = b; cb->use_clipping = (int)clip; cb->begin = b->allocated; cb->end = b->allocated; cb->last = b->allocated; } NK_LIB void nk_command_buffer_reset(struct nk_command_buffer *b) { NK_ASSERT(b); if (!b) return; b->begin = 0; b->end = 0; b->last = 0; b->clip = nk_null_rect; #ifdef NK_INCLUDE_COMMAND_USERDATA b->userdata.ptr = 0; #endif } NK_LIB void* nk_command_buffer_push(struct nk_command_buffer* b, enum nk_command_type t, nk_size size) { NK_STORAGE const nk_size align = NK_ALIGNOF(struct nk_command); struct nk_command *cmd; nk_size alignment; void *unaligned; void *memory; NK_ASSERT(b); NK_ASSERT(b->base); if (!b) return 0; cmd = (struct nk_command*)nk_buffer_alloc(b->base,NK_BUFFER_FRONT,size,align); if (!cmd) return 0; /* make sure the offset to the next command is aligned */ b->last = (nk_size)((nk_byte*)cmd - (nk_byte*)b->base->memory.ptr); unaligned = (nk_byte*)cmd + size; memory = NK_ALIGN_PTR(unaligned, align); alignment = (nk_size)((nk_byte*)memory - (nk_byte*)unaligned); #ifdef NK_ZERO_COMMAND_MEMORY NK_MEMSET(cmd, 0, size + alignment); #endif cmd->type = t; cmd->next = b->base->allocated + alignment; #ifdef NK_INCLUDE_COMMAND_USERDATA cmd->userdata = b->userdata; #endif b->end = cmd->next; return cmd; } NK_API void nk_push_scissor(struct nk_command_buffer *b, struct nk_rect r) { struct nk_command_scissor *cmd; NK_ASSERT(b); if (!b) return; b->clip.x = r.x; b->clip.y = r.y; b->clip.w = r.w; b->clip.h = r.h; cmd = (struct nk_command_scissor*) nk_command_buffer_push(b, NK_COMMAND_SCISSOR, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); } NK_API void nk_stroke_line(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float line_thickness, struct nk_color c) { struct nk_command_line *cmd; NK_ASSERT(b); if (!b || line_thickness <= 0) return; cmd = (struct nk_command_line*) nk_command_buffer_push(b, NK_COMMAND_LINE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->begin.x = (short)x0; cmd->begin.y = (short)y0; cmd->end.x = (short)x1; cmd->end.y = (short)y1; cmd->color = c; } NK_API void nk_stroke_curve(struct nk_command_buffer *b, float ax, float ay, float ctrl0x, float ctrl0y, float ctrl1x, float ctrl1y, float bx, float by, float line_thickness, struct nk_color col) { struct nk_command_curve *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; cmd = (struct nk_command_curve*) nk_command_buffer_push(b, NK_COMMAND_CURVE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->begin.x = (short)ax; cmd->begin.y = (short)ay; cmd->ctrl[0].x = (short)ctrl0x; cmd->ctrl[0].y = (short)ctrl0y; cmd->ctrl[1].x = (short)ctrl1x; cmd->ctrl[1].y = (short)ctrl1y; cmd->end.x = (short)bx; cmd->end.y = (short)by; cmd->color = col; } NK_API void nk_stroke_rect(struct nk_command_buffer *b, struct nk_rect rect, float rounding, float line_thickness, struct nk_color c) { struct nk_command_rect *cmd; NK_ASSERT(b); if (!b || c.a == 0 || rect.w == 0 || rect.h == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect*) nk_command_buffer_push(b, NK_COMMAND_RECT, sizeof(*cmd)); if (!cmd) return; cmd->rounding = (unsigned short)rounding; cmd->line_thickness = (unsigned short)line_thickness; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->color = c; } NK_API void nk_fill_rect(struct nk_command_buffer *b, struct nk_rect rect, float rounding, struct nk_color c) { struct nk_command_rect_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0 || rect.w == 0 || rect.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect_filled*) nk_command_buffer_push(b, NK_COMMAND_RECT_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->rounding = (unsigned short)rounding; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->color = c; } NK_API void nk_fill_rect_multi_color(struct nk_command_buffer *b, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom) { struct nk_command_rect_multi_color *cmd; NK_ASSERT(b); if (!b || rect.w == 0 || rect.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_rect_multi_color*) nk_command_buffer_push(b, NK_COMMAND_RECT_MULTI_COLOR, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)rect.x; cmd->y = (short)rect.y; cmd->w = (unsigned short)NK_MAX(0, rect.w); cmd->h = (unsigned short)NK_MAX(0, rect.h); cmd->left = left; cmd->top = top; cmd->right = right; cmd->bottom = bottom; } NK_API void nk_stroke_circle(struct nk_command_buffer *b, struct nk_rect r, float line_thickness, struct nk_color c) { struct nk_command_circle *cmd; if (!b || r.w == 0 || r.h == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(r.x, r.y, r.w, r.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_circle*) nk_command_buffer_push(b, NK_COMMAND_CIRCLE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(r.w, 0); cmd->h = (unsigned short)NK_MAX(r.h, 0); cmd->color = c; } NK_API void nk_fill_circle(struct nk_command_buffer *b, struct nk_rect r, struct nk_color c) { struct nk_command_circle_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0 || r.w == 0 || r.h == 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INTERSECT(r.x, r.y, r.w, r.h, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_circle_filled*) nk_command_buffer_push(b, NK_COMMAND_CIRCLE_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(r.w, 0); cmd->h = (unsigned short)NK_MAX(r.h, 0); cmd->color = c; } NK_API void nk_stroke_arc(struct nk_command_buffer *b, float cx, float cy, float radius, float a_min, float a_max, float line_thickness, struct nk_color c) { struct nk_command_arc *cmd; if (!b || c.a == 0 || line_thickness <= 0) return; cmd = (struct nk_command_arc*) nk_command_buffer_push(b, NK_COMMAND_ARC, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->cx = (short)cx; cmd->cy = (short)cy; cmd->r = (unsigned short)radius; cmd->a[0] = a_min; cmd->a[1] = a_max; cmd->color = c; } NK_API void nk_fill_arc(struct nk_command_buffer *b, float cx, float cy, float radius, float a_min, float a_max, struct nk_color c) { struct nk_command_arc_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0) return; cmd = (struct nk_command_arc_filled*) nk_command_buffer_push(b, NK_COMMAND_ARC_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->cx = (short)cx; cmd->cy = (short)cy; cmd->r = (unsigned short)radius; cmd->a[0] = a_min; cmd->a[1] = a_max; cmd->color = c; } NK_API void nk_stroke_triangle(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float x2, float y2, float line_thickness, struct nk_color c) { struct nk_command_triangle *cmd; NK_ASSERT(b); if (!b || c.a == 0 || line_thickness <= 0) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INBOX(x0, y0, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x1, y1, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x2, y2, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_triangle*) nk_command_buffer_push(b, NK_COMMAND_TRIANGLE, sizeof(*cmd)); if (!cmd) return; cmd->line_thickness = (unsigned short)line_thickness; cmd->a.x = (short)x0; cmd->a.y = (short)y0; cmd->b.x = (short)x1; cmd->b.y = (short)y1; cmd->c.x = (short)x2; cmd->c.y = (short)y2; cmd->color = c; } NK_API void nk_fill_triangle(struct nk_command_buffer *b, float x0, float y0, float x1, float y1, float x2, float y2, struct nk_color c) { struct nk_command_triangle_filled *cmd; NK_ASSERT(b); if (!b || c.a == 0) return; if (!b) return; if (b->use_clipping) { const struct nk_rect *clip = &b->clip; if (!NK_INBOX(x0, y0, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x1, y1, clip->x, clip->y, clip->w, clip->h) && !NK_INBOX(x2, y2, clip->x, clip->y, clip->w, clip->h)) return; } cmd = (struct nk_command_triangle_filled*) nk_command_buffer_push(b, NK_COMMAND_TRIANGLE_FILLED, sizeof(*cmd)); if (!cmd) return; cmd->a.x = (short)x0; cmd->a.y = (short)y0; cmd->b.x = (short)x1; cmd->b.y = (short)y1; cmd->c.x = (short)x2; cmd->c.y = (short)y2; cmd->color = c; } NK_API void nk_stroke_polygon(struct nk_command_buffer *b, float *points, int point_count, float line_thickness, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polygon *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polygon*) nk_command_buffer_push(b, NK_COMMAND_POLYGON, size); if (!cmd) return; cmd->color = col; cmd->line_thickness = (unsigned short)line_thickness; cmd->point_count = (unsigned short)point_count; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_fill_polygon(struct nk_command_buffer *b, float *points, int point_count, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polygon_filled *cmd; NK_ASSERT(b); if (!b || col.a == 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polygon_filled*) nk_command_buffer_push(b, NK_COMMAND_POLYGON_FILLED, size); if (!cmd) return; cmd->color = col; cmd->point_count = (unsigned short)point_count; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2+0]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_stroke_polyline(struct nk_command_buffer *b, float *points, int point_count, float line_thickness, struct nk_color col) { int i; nk_size size = 0; struct nk_command_polyline *cmd; NK_ASSERT(b); if (!b || col.a == 0 || line_thickness <= 0) return; size = sizeof(*cmd) + sizeof(short) * 2 * (nk_size)point_count; cmd = (struct nk_command_polyline*) nk_command_buffer_push(b, NK_COMMAND_POLYLINE, size); if (!cmd) return; cmd->color = col; cmd->point_count = (unsigned short)point_count; cmd->line_thickness = (unsigned short)line_thickness; for (i = 0; i < point_count; ++i) { cmd->points[i].x = (short)points[i*2]; cmd->points[i].y = (short)points[i*2+1]; } } NK_API void nk_draw_image(struct nk_command_buffer *b, struct nk_rect r, const struct nk_image *img, struct nk_color col) { struct nk_command_image *cmd; NK_ASSERT(b); if (!b) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } cmd = (struct nk_command_image*) nk_command_buffer_push(b, NK_COMMAND_IMAGE, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); cmd->img = *img; cmd->col = col; } NK_API void nk_push_custom(struct nk_command_buffer *b, struct nk_rect r, nk_command_custom_callback cb, nk_handle usr) { struct nk_command_custom *cmd; NK_ASSERT(b); if (!b) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } cmd = (struct nk_command_custom*) nk_command_buffer_push(b, NK_COMMAND_CUSTOM, sizeof(*cmd)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)NK_MAX(0, r.w); cmd->h = (unsigned short)NK_MAX(0, r.h); cmd->callback_data = usr; cmd->callback = cb; } NK_API void nk_draw_text(struct nk_command_buffer *b, struct nk_rect r, const char *string, int length, const struct nk_user_font *font, struct nk_color bg, struct nk_color fg) { float text_width = 0; struct nk_command_text *cmd; NK_ASSERT(b); NK_ASSERT(font); if (!b || !string || !length || (bg.a == 0 && fg.a == 0)) return; if (b->use_clipping) { const struct nk_rect *c = &b->clip; if (c->w == 0 || c->h == 0 || !NK_INTERSECT(r.x, r.y, r.w, r.h, c->x, c->y, c->w, c->h)) return; } /* make sure text fits inside bounds */ text_width = font->width(font->userdata, font->height, string, length); if (text_width > r.w){ int glyphs = 0; float txt_width = (float)text_width; length = nk_text_clamp(font, string, length, r.w, &glyphs, &txt_width, 0,0); } if (!length) return; cmd = (struct nk_command_text*) nk_command_buffer_push(b, NK_COMMAND_TEXT, sizeof(*cmd) + (nk_size)(length + 1)); if (!cmd) return; cmd->x = (short)r.x; cmd->y = (short)r.y; cmd->w = (unsigned short)r.w; cmd->h = (unsigned short)r.h; cmd->background = bg; cmd->foreground = fg; cmd->font = font; cmd->length = length; cmd->height = font->height; NK_MEMCPY(cmd->string, string, (nk_size)length); cmd->string[length] = '\0'; } ================================================ FILE: src/nuklear_edit.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * FILTER * * ===============================================================*/ NK_API int nk_filter_default(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(unicode); NK_UNUSED(box); return nk_true; } NK_API int nk_filter_ascii(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode > 128) return nk_false; else return nk_true; } NK_API int nk_filter_float(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && unicode != '.' && unicode != '-') return nk_false; else return nk_true; } NK_API int nk_filter_decimal(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && unicode != '-') return nk_false; else return nk_true; } NK_API int nk_filter_hex(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if ((unicode < '0' || unicode > '9') && (unicode < 'a' || unicode > 'f') && (unicode < 'A' || unicode > 'F')) return nk_false; else return nk_true; } NK_API int nk_filter_oct(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode < '0' || unicode > '7') return nk_false; else return nk_true; } NK_API int nk_filter_binary(const struct nk_text_edit *box, nk_rune unicode) { NK_UNUSED(box); if (unicode != '0' && unicode != '1') return nk_false; else return nk_true; } /* =============================================================== * * EDIT * * ===============================================================*/ NK_LIB void nk_edit_draw_text(struct nk_command_buffer *out, const struct nk_style_edit *style, float pos_x, float pos_y, float x_offset, const char *text, int byte_len, float row_height, const struct nk_user_font *font, struct nk_color background, struct nk_color foreground, int is_selected) { NK_ASSERT(out); NK_ASSERT(font); NK_ASSERT(style); if (!text || !byte_len || !out || !style) return; {int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; float line_width = 0; float glyph_width; const char *line = text; float line_offset = 0; int line_count = 0; struct nk_text txt; txt.padding = nk_vec2(0,0); txt.background = background; txt.text = foreground; glyph_len = nk_utf_decode(text+text_len, &unicode, byte_len-text_len); if (!glyph_len) return; while ((text_len < byte_len) && glyph_len) { if (unicode == '\n') { /* new line separator so draw previous line */ struct nk_rect label; label.y = pos_y + line_offset; label.h = row_height; label.w = line_width; label.x = pos_x; if (!line_count) label.x += x_offset; if (is_selected) /* selection needs to draw different background color */ nk_fill_rect(out, label, 0, background); nk_widget_text(out, label, line, (int)((text + text_len) - line), &txt, NK_TEXT_CENTERED, font); text_len++; line_count++; line_width = 0; line = text + text_len; line_offset += row_height; glyph_len = nk_utf_decode(text + text_len, &unicode, (int)(byte_len-text_len)); continue; } if (unicode == '\r') { text_len++; glyph_len = nk_utf_decode(text + text_len, &unicode, byte_len-text_len); continue; } glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); line_width += (float)glyph_width; text_len += glyph_len; glyph_len = nk_utf_decode(text + text_len, &unicode, byte_len-text_len); continue; } if (line_width > 0) { /* draw last line */ struct nk_rect label; label.y = pos_y + line_offset; label.h = row_height; label.w = line_width; label.x = pos_x; if (!line_count) label.x += x_offset; if (is_selected) nk_fill_rect(out, label, 0, background); nk_widget_text(out, label, line, (int)((text + text_len) - line), &txt, NK_TEXT_LEFT, font); }} } NK_LIB nk_flags nk_do_edit(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_flags flags, nk_plugin_filter filter, struct nk_text_edit *edit, const struct nk_style_edit *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect area; nk_flags ret = 0; float row_height; char prev_state = 0; char is_hovered = 0; char select_all = 0; char cursor_follow = 0; struct nk_rect old_clip; struct nk_rect clip; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(style); if (!state || !out || !style) return ret; /* visible text area calculation */ area.x = bounds.x + style->padding.x + style->border; area.y = bounds.y + style->padding.y + style->border; area.w = bounds.w - (2.0f * style->padding.x + 2 * style->border); area.h = bounds.h - (2.0f * style->padding.y + 2 * style->border); if (flags & NK_EDIT_MULTILINE) area.w = NK_MAX(0, area.w - style->scrollbar_size.x); row_height = (flags & NK_EDIT_MULTILINE)? font->height + style->row_padding: area.h; /* calculate clipping rectangle */ old_clip = out->clip; nk_unify(&clip, &old_clip, area.x, area.y, area.x + area.w, area.y + area.h); /* update edit state */ prev_state = (char)edit->active; is_hovered = (char)nk_input_is_mouse_hovering_rect(in, bounds); if (in && in->mouse.buttons[NK_BUTTON_LEFT].clicked && in->mouse.buttons[NK_BUTTON_LEFT].down) { edit->active = NK_INBOX(in->mouse.pos.x, in->mouse.pos.y, bounds.x, bounds.y, bounds.w, bounds.h); } /* (de)activate text editor */ if (!prev_state && edit->active) { const enum nk_text_edit_type type = (flags & NK_EDIT_MULTILINE) ? NK_TEXT_EDIT_MULTI_LINE: NK_TEXT_EDIT_SINGLE_LINE; nk_textedit_clear_state(edit, type, filter); if (flags & NK_EDIT_AUTO_SELECT) select_all = nk_true; if (flags & NK_EDIT_GOTO_END_ON_ACTIVATE) { edit->cursor = edit->string.len; in = 0; } } else if (!edit->active) edit->mode = NK_TEXT_EDIT_MODE_VIEW; if (flags & NK_EDIT_READ_ONLY) edit->mode = NK_TEXT_EDIT_MODE_VIEW; else if (flags & NK_EDIT_ALWAYS_INSERT_MODE) edit->mode = NK_TEXT_EDIT_MODE_INSERT; ret = (edit->active) ? NK_EDIT_ACTIVE: NK_EDIT_INACTIVE; if (prev_state != edit->active) ret |= (edit->active) ? NK_EDIT_ACTIVATED: NK_EDIT_DEACTIVATED; /* handle user input */ if (edit->active && in) { int shift_mod = in->keyboard.keys[NK_KEY_SHIFT].down; const float mouse_x = (in->mouse.pos.x - area.x) + edit->scrollbar.x; const float mouse_y = (in->mouse.pos.y - area.y) + edit->scrollbar.y; /* mouse click handler */ is_hovered = (char)nk_input_is_mouse_hovering_rect(in, area); if (select_all) { nk_textedit_select_all(edit); } else if (is_hovered && in->mouse.buttons[NK_BUTTON_LEFT].down && in->mouse.buttons[NK_BUTTON_LEFT].clicked) { nk_textedit_click(edit, mouse_x, mouse_y, font, row_height); } else if (is_hovered && in->mouse.buttons[NK_BUTTON_LEFT].down && (in->mouse.delta.x != 0.0f || in->mouse.delta.y != 0.0f)) { nk_textedit_drag(edit, mouse_x, mouse_y, font, row_height); cursor_follow = nk_true; } else if (is_hovered && in->mouse.buttons[NK_BUTTON_RIGHT].clicked && in->mouse.buttons[NK_BUTTON_RIGHT].down) { nk_textedit_key(edit, NK_KEY_TEXT_WORD_LEFT, nk_false, font, row_height); nk_textedit_key(edit, NK_KEY_TEXT_WORD_RIGHT, nk_true, font, row_height); cursor_follow = nk_true; } {int i; /* keyboard input */ int old_mode = edit->mode; for (i = 0; i < NK_KEY_MAX; ++i) { if (i == NK_KEY_ENTER || i == NK_KEY_TAB) continue; /* special case */ if (nk_input_is_key_pressed(in, (enum nk_keys)i)) { nk_textedit_key(edit, (enum nk_keys)i, shift_mod, font, row_height); cursor_follow = nk_true; } } if (old_mode != edit->mode) { in->keyboard.text_len = 0; }} /* text input */ edit->filter = filter; if (in->keyboard.text_len) { nk_textedit_text(edit, in->keyboard.text, in->keyboard.text_len); cursor_follow = nk_true; in->keyboard.text_len = 0; } /* enter key handler */ if (nk_input_is_key_pressed(in, NK_KEY_ENTER)) { cursor_follow = nk_true; if (flags & NK_EDIT_CTRL_ENTER_NEWLINE && shift_mod) nk_textedit_text(edit, "\n", 1); else if (flags & NK_EDIT_SIG_ENTER) ret |= NK_EDIT_COMMITED; else nk_textedit_text(edit, "\n", 1); } /* cut & copy handler */ {int copy= nk_input_is_key_pressed(in, NK_KEY_COPY); int cut = nk_input_is_key_pressed(in, NK_KEY_CUT); if ((copy || cut) && (flags & NK_EDIT_CLIPBOARD)) { int glyph_len; nk_rune unicode; const char *text; int b = edit->select_start; int e = edit->select_end; int begin = NK_MIN(b, e); int end = NK_MAX(b, e); text = nk_str_at_const(&edit->string, begin, &unicode, &glyph_len); if (edit->clip.copy) edit->clip.copy(edit->clip.userdata, text, end - begin); if (cut && !(flags & NK_EDIT_READ_ONLY)){ nk_textedit_cut(edit); cursor_follow = nk_true; } }} /* paste handler */ {int paste = nk_input_is_key_pressed(in, NK_KEY_PASTE); if (paste && (flags & NK_EDIT_CLIPBOARD) && edit->clip.paste) { edit->clip.paste(edit->clip.userdata, edit); cursor_follow = nk_true; }} /* tab handler */ {int tab = nk_input_is_key_pressed(in, NK_KEY_TAB); if (tab && (flags & NK_EDIT_ALLOW_TAB)) { nk_textedit_text(edit, " ", 4); cursor_follow = nk_true; }} } /* set widget state */ if (edit->active) *state = NK_WIDGET_STATE_ACTIVE; else nk_widget_state_reset(state); if (is_hovered) *state |= NK_WIDGET_STATE_HOVERED; /* DRAW EDIT */ {const char *text = nk_str_get_const(&edit->string); int len = nk_str_len_char(&edit->string); {/* select background colors/images */ const struct nk_style_item *background; if (*state & NK_WIDGET_STATE_ACTIVED) background = &style->active; else if (*state & NK_WIDGET_STATE_HOVER) background = &style->hover; else background = &style->normal; /* draw background frame */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_stroke_rect(out, bounds, style->rounding, style->border, style->border_color); nk_fill_rect(out, bounds, style->rounding, background->data.color); } else nk_draw_image(out, bounds, &background->data.image, nk_white);} area.w = NK_MAX(0, area.w - style->cursor_size); if (edit->active) { int total_lines = 1; struct nk_vec2 text_size = nk_vec2(0,0); /* text pointer positions */ const char *cursor_ptr = 0; const char *select_begin_ptr = 0; const char *select_end_ptr = 0; /* 2D pixel positions */ struct nk_vec2 cursor_pos = nk_vec2(0,0); struct nk_vec2 selection_offset_start = nk_vec2(0,0); struct nk_vec2 selection_offset_end = nk_vec2(0,0); int selection_begin = NK_MIN(edit->select_start, edit->select_end); int selection_end = NK_MAX(edit->select_start, edit->select_end); /* calculate total line count + total space + cursor/selection position */ float line_width = 0.0f; if (text && len) { /* utf8 encoding */ float glyph_width; int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; int glyphs = 0; int row_begin = 0; glyph_len = nk_utf_decode(text, &unicode, len); glyph_width = font->width(font->userdata, font->height, text, glyph_len); line_width = 0; /* iterate all lines */ while ((text_len < len) && glyph_len) { /* set cursor 2D position and line */ if (!cursor_ptr && glyphs == edit->cursor) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ cursor_pos.y = (float)(total_lines-1) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); cursor_pos.x = row_size.x; cursor_ptr = text + text_len; } /* set start selection 2D position and line */ if (!select_begin_ptr && edit->select_start != edit->select_end && glyphs == selection_begin) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ selection_offset_start.y = (float)(NK_MAX(total_lines-1,0)) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); selection_offset_start.x = row_size.x; select_begin_ptr = text + text_len; } /* set end selection 2D position and line */ if (!select_end_ptr && edit->select_start != edit->select_end && glyphs == selection_end) { int glyph_offset; struct nk_vec2 out_offset; struct nk_vec2 row_size; const char *remaining; /* calculate 2d position */ selection_offset_end.y = (float)(total_lines-1) * row_height; row_size = nk_text_calculate_text_bounds(font, text+row_begin, text_len-row_begin, row_height, &remaining, &out_offset, &glyph_offset, NK_STOP_ON_NEW_LINE); selection_offset_end.x = row_size.x; select_end_ptr = text + text_len; } if (unicode == '\n') { text_size.x = NK_MAX(text_size.x, line_width); total_lines++; line_width = 0; text_len++; glyphs++; row_begin = text_len; glyph_len = nk_utf_decode(text + text_len, &unicode, len-text_len); glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); continue; } glyphs++; text_len += glyph_len; line_width += (float)glyph_width; glyph_len = nk_utf_decode(text + text_len, &unicode, len-text_len); glyph_width = font->width(font->userdata, font->height, text+text_len, glyph_len); continue; } text_size.y = (float)total_lines * row_height; /* handle case when cursor is at end of text buffer */ if (!cursor_ptr && edit->cursor == edit->string.len) { cursor_pos.x = line_width; cursor_pos.y = text_size.y - row_height; } } { /* scrollbar */ if (cursor_follow) { /* update scrollbar to follow cursor */ if (!(flags & NK_EDIT_NO_HORIZONTAL_SCROLL)) { /* horizontal scroll */ const float scroll_increment = area.w * 0.25f; if (cursor_pos.x < edit->scrollbar.x) edit->scrollbar.x = (float)(int)NK_MAX(0.0f, cursor_pos.x - scroll_increment); if (cursor_pos.x >= edit->scrollbar.x + area.w) edit->scrollbar.x = (float)(int)NK_MAX(0.0f, edit->scrollbar.x + scroll_increment); } else edit->scrollbar.x = 0; if (flags & NK_EDIT_MULTILINE) { /* vertical scroll */ if (cursor_pos.y < edit->scrollbar.y) edit->scrollbar.y = NK_MAX(0.0f, cursor_pos.y - row_height); if (cursor_pos.y >= edit->scrollbar.y + area.h) edit->scrollbar.y = edit->scrollbar.y + row_height; } else edit->scrollbar.y = 0; } /* scrollbar widget */ if (flags & NK_EDIT_MULTILINE) { nk_flags ws; struct nk_rect scroll; float scroll_target; float scroll_offset; float scroll_step; float scroll_inc; scroll = area; scroll.x = (bounds.x + bounds.w - style->border) - style->scrollbar_size.x; scroll.w = style->scrollbar_size.x; scroll_offset = edit->scrollbar.y; scroll_step = scroll.h * 0.10f; scroll_inc = scroll.h * 0.01f; scroll_target = text_size.y; edit->scrollbar.y = nk_do_scrollbarv(&ws, out, scroll, 0, scroll_offset, scroll_target, scroll_step, scroll_inc, &style->scrollbar, in, font); } } /* draw text */ {struct nk_color background_color; struct nk_color text_color; struct nk_color sel_background_color; struct nk_color sel_text_color; struct nk_color cursor_color; struct nk_color cursor_text_color; const struct nk_style_item *background; nk_push_scissor(out, clip); /* select correct colors to draw */ if (*state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text_color = style->text_active; sel_text_color = style->selected_text_hover; sel_background_color = style->selected_hover; cursor_color = style->cursor_hover; cursor_text_color = style->cursor_text_hover; } else if (*state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text_color = style->text_hover; sel_text_color = style->selected_text_hover; sel_background_color = style->selected_hover; cursor_text_color = style->cursor_text_hover; cursor_color = style->cursor_hover; } else { background = &style->normal; text_color = style->text_normal; sel_text_color = style->selected_text_normal; sel_background_color = style->selected_normal; cursor_color = style->cursor_normal; cursor_text_color = style->cursor_text_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) background_color = nk_rgba(0,0,0,0); else background_color = background->data.color; if (edit->select_start == edit->select_end) { /* no selection so just draw the complete text */ const char *begin = nk_str_get_const(&edit->string); int l = nk_str_len_char(&edit->string); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, background_color, text_color, nk_false); } else { /* edit has selection so draw 1-3 text chunks */ if (edit->select_start != edit->select_end && selection_begin > 0){ /* draw unselected text before selection */ const char *begin = nk_str_get_const(&edit->string); NK_ASSERT(select_begin_ptr); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, (int)(select_begin_ptr - begin), row_height, font, background_color, text_color, nk_false); } if (edit->select_start != edit->select_end) { /* draw selected text */ NK_ASSERT(select_begin_ptr); if (!select_end_ptr) { const char *begin = nk_str_get_const(&edit->string); select_end_ptr = begin + nk_str_len_char(&edit->string); } nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y + selection_offset_start.y - edit->scrollbar.y, selection_offset_start.x, select_begin_ptr, (int)(select_end_ptr - select_begin_ptr), row_height, font, sel_background_color, sel_text_color, nk_true); } if ((edit->select_start != edit->select_end && selection_end < edit->string.len)) { /* draw unselected text after selected text */ const char *begin = select_end_ptr; const char *end = nk_str_get_const(&edit->string) + nk_str_len_char(&edit->string); NK_ASSERT(select_end_ptr); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y + selection_offset_end.y - edit->scrollbar.y, selection_offset_end.x, begin, (int)(end - begin), row_height, font, background_color, text_color, nk_true); } } /* cursor */ if (edit->select_start == edit->select_end) { if (edit->cursor >= nk_str_len(&edit->string) || (cursor_ptr && *cursor_ptr == '\n')) { /* draw cursor at end of line */ struct nk_rect cursor; cursor.w = style->cursor_size; cursor.h = font->height; cursor.x = area.x + cursor_pos.x - edit->scrollbar.x; cursor.y = area.y + cursor_pos.y + row_height/2.0f - cursor.h/2.0f; cursor.y -= edit->scrollbar.y; nk_fill_rect(out, cursor, 0, cursor_color); } else { /* draw cursor inside text */ int glyph_len; struct nk_rect label; struct nk_text txt; nk_rune unicode; NK_ASSERT(cursor_ptr); glyph_len = nk_utf_decode(cursor_ptr, &unicode, 4); label.x = area.x + cursor_pos.x - edit->scrollbar.x; label.y = area.y + cursor_pos.y - edit->scrollbar.y; label.w = font->width(font->userdata, font->height, cursor_ptr, glyph_len); label.h = row_height; txt.padding = nk_vec2(0,0); txt.background = cursor_color;; txt.text = cursor_text_color; nk_fill_rect(out, label, 0, cursor_color); nk_widget_text(out, label, cursor_ptr, glyph_len, &txt, NK_TEXT_LEFT, font); } }} } else { /* not active so just draw text */ int l = nk_str_len_char(&edit->string); const char *begin = nk_str_get_const(&edit->string); const struct nk_style_item *background; struct nk_color background_color; struct nk_color text_color; nk_push_scissor(out, clip); if (*state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text_color = style->text_active; } else if (*state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text_color = style->text_hover; } else { background = &style->normal; text_color = style->text_normal; } if (background->type == NK_STYLE_ITEM_IMAGE) background_color = nk_rgba(0,0,0,0); else background_color = background->data.color; nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, background_color, text_color, nk_false); } nk_push_scissor(out, old_clip);} return ret; } NK_API void nk_edit_focus(struct nk_context *ctx, nk_flags flags) { nk_hash hash; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; hash = win->edit.seq; win->edit.active = nk_true; win->edit.name = hash; if (flags & NK_EDIT_ALWAYS_INSERT_MODE) win->edit.mode = NK_TEXT_EDIT_MODE_INSERT; } NK_API void nk_edit_unfocus(struct nk_context *ctx) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; win->edit.active = nk_false; win->edit.name = 0; } NK_API nk_flags nk_edit_string(struct nk_context *ctx, nk_flags flags, char *memory, int *len, int max, nk_plugin_filter filter) { nk_hash hash; nk_flags state; struct nk_text_edit *edit; struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(memory); NK_ASSERT(len); if (!ctx || !memory || !len) return 0; filter = (!filter) ? nk_filter_default: filter; win = ctx->current; hash = win->edit.seq; edit = &ctx->text_edit; nk_textedit_clear_state(&ctx->text_edit, (flags & NK_EDIT_MULTILINE)? NK_TEXT_EDIT_MULTI_LINE: NK_TEXT_EDIT_SINGLE_LINE, filter); if (win->edit.active && hash == win->edit.name) { if (flags & NK_EDIT_NO_CURSOR) edit->cursor = nk_utf_len(memory, *len); else edit->cursor = win->edit.cursor; if (!(flags & NK_EDIT_SELECTABLE)) { edit->select_start = win->edit.cursor; edit->select_end = win->edit.cursor; } else { edit->select_start = win->edit.sel_start; edit->select_end = win->edit.sel_end; } edit->mode = win->edit.mode; edit->scrollbar.x = (float)win->edit.scrollbar.x; edit->scrollbar.y = (float)win->edit.scrollbar.y; edit->active = nk_true; } else edit->active = nk_false; max = NK_MAX(1, max); *len = NK_MIN(*len, max-1); nk_str_init_fixed(&edit->string, memory, (nk_size)max); edit->string.buffer.allocated = (nk_size)*len; edit->string.len = nk_utf_len(memory, *len); state = nk_edit_buffer(ctx, flags, edit, filter); *len = (int)edit->string.buffer.allocated; if (edit->active) { win->edit.cursor = edit->cursor; win->edit.sel_start = edit->select_start; win->edit.sel_end = edit->select_end; win->edit.mode = edit->mode; win->edit.scrollbar.x = (nk_uint)edit->scrollbar.x; win->edit.scrollbar.y = (nk_uint)edit->scrollbar.y; } return state; } NK_API nk_flags nk_edit_buffer(struct nk_context *ctx, nk_flags flags, struct nk_text_edit *edit, nk_plugin_filter filter) { struct nk_window *win; struct nk_style *style; struct nk_input *in; enum nk_widget_layout_states state; struct nk_rect bounds; nk_flags ret_flags = 0; unsigned char prev_state; nk_hash hash; /* make sure correct values */ NK_ASSERT(ctx); NK_ASSERT(edit); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return state; in = (win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; /* check if edit is currently hot item */ hash = win->edit.seq++; if (win->edit.active && hash == win->edit.name) { if (flags & NK_EDIT_NO_CURSOR) edit->cursor = edit->string.len; if (!(flags & NK_EDIT_SELECTABLE)) { edit->select_start = edit->cursor; edit->select_end = edit->cursor; } if (flags & NK_EDIT_CLIPBOARD) edit->clip = ctx->clip; edit->active = (unsigned char)win->edit.active; } else edit->active = nk_false; edit->mode = win->edit.mode; filter = (!filter) ? nk_filter_default: filter; prev_state = (unsigned char)edit->active; in = (flags & NK_EDIT_READ_ONLY) ? 0: in; ret_flags = nk_do_edit(&ctx->last_widget_state, &win->buffer, bounds, flags, filter, edit, &style->edit, in, style->font); if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_TEXT]; if (edit->active && prev_state != edit->active) { /* current edit is now hot */ win->edit.active = nk_true; win->edit.name = hash; } else if (prev_state && !edit->active) { /* current edit is now cold */ win->edit.active = nk_false; } return ret_flags; } NK_API nk_flags nk_edit_string_zero_terminated(struct nk_context *ctx, nk_flags flags, char *buffer, int max, nk_plugin_filter filter) { nk_flags result; int len = nk_strlen(buffer); result = nk_edit_string(ctx, flags, buffer, &len, max, filter); buffer[NK_MIN(NK_MAX(max-1,0), len)] = '\0'; return result; } ================================================ FILE: src/nuklear_font.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" #ifdef NK_INCLUDE_FONT_BAKING /* ------------------------------------------------------------- * * RECT PACK * * --------------------------------------------------------------*/ /* stb_rect_pack.h - v0.05 - public domain - rectangle packing */ /* Sean Barrett 2014 */ #define NK_RP__MAXVAL 0xffff typedef unsigned short nk_rp_coord; struct nk_rp_rect { /* reserved for your use: */ int id; /* input: */ nk_rp_coord w, h; /* output: */ nk_rp_coord x, y; int was_packed; /* non-zero if valid packing */ }; /* 16 bytes, nominally */ struct nk_rp_node { nk_rp_coord x,y; struct nk_rp_node *next; }; struct nk_rp_context { int width; int height; int align; int init_mode; int heuristic; int num_nodes; struct nk_rp_node *active_head; struct nk_rp_node *free_head; struct nk_rp_node extra[2]; /* we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2' */ }; struct nk_rp__findresult { int x,y; struct nk_rp_node **prev_link; }; enum NK_RP_HEURISTIC { NK_RP_HEURISTIC_Skyline_default=0, NK_RP_HEURISTIC_Skyline_BL_sortHeight = NK_RP_HEURISTIC_Skyline_default, NK_RP_HEURISTIC_Skyline_BF_sortHeight }; enum NK_RP_INIT_STATE{NK_RP__INIT_skyline = 1}; NK_INTERN void nk_rp_setup_allow_out_of_mem(struct nk_rp_context *context, int allow_out_of_mem) { if (allow_out_of_mem) /* if it's ok to run out of memory, then don't bother aligning them; */ /* this gives better packing, but may fail due to OOM (even though */ /* the rectangles easily fit). @TODO a smarter approach would be to only */ /* quantize once we've hit OOM, then we could get rid of this parameter. */ context->align = 1; else { /* if it's not ok to run out of memory, then quantize the widths */ /* so that num_nodes is always enough nodes. */ /* */ /* I.e. num_nodes * align >= width */ /* align >= width / num_nodes */ /* align = ceil(width/num_nodes) */ context->align = (context->width + context->num_nodes-1) / context->num_nodes; } } NK_INTERN void nk_rp_init_target(struct nk_rp_context *context, int width, int height, struct nk_rp_node *nodes, int num_nodes) { int i; #ifndef STBRP_LARGE_RECTS NK_ASSERT(width <= 0xffff && height <= 0xffff); #endif for (i=0; i < num_nodes-1; ++i) nodes[i].next = &nodes[i+1]; nodes[i].next = 0; context->init_mode = NK_RP__INIT_skyline; context->heuristic = NK_RP_HEURISTIC_Skyline_default; context->free_head = &nodes[0]; context->active_head = &context->extra[0]; context->width = width; context->height = height; context->num_nodes = num_nodes; nk_rp_setup_allow_out_of_mem(context, 0); /* node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly) */ context->extra[0].x = 0; context->extra[0].y = 0; context->extra[0].next = &context->extra[1]; context->extra[1].x = (nk_rp_coord) width; context->extra[1].y = 65535; context->extra[1].next = 0; } /* find minimum y position if it starts at x1 */ NK_INTERN int nk_rp__skyline_find_min_y(struct nk_rp_context *c, struct nk_rp_node *first, int x0, int width, int *pwaste) { struct nk_rp_node *node = first; int x1 = x0 + width; int min_y, visited_width, waste_area; NK_ASSERT(first->x <= x0); NK_UNUSED(c); NK_ASSERT(node->next->x > x0); /* we ended up handling this in the caller for efficiency */ NK_ASSERT(node->x <= x0); min_y = 0; waste_area = 0; visited_width = 0; while (node->x < x1) { if (node->y > min_y) { /* raise min_y higher. */ /* we've accounted for all waste up to min_y, */ /* but we'll now add more waste for everything we've visited */ waste_area += visited_width * (node->y - min_y); min_y = node->y; /* the first time through, visited_width might be reduced */ if (node->x < x0) visited_width += node->next->x - x0; else visited_width += node->next->x - node->x; } else { /* add waste area */ int under_width = node->next->x - node->x; if (under_width + visited_width > width) under_width = width - visited_width; waste_area += under_width * (min_y - node->y); visited_width += under_width; } node = node->next; } *pwaste = waste_area; return min_y; } NK_INTERN struct nk_rp__findresult nk_rp__skyline_find_best_pos(struct nk_rp_context *c, int width, int height) { int best_waste = (1<<30), best_x, best_y = (1 << 30); struct nk_rp__findresult fr; struct nk_rp_node **prev, *node, *tail, **best = 0; /* align to multiple of c->align */ width = (width + c->align - 1); width -= width % c->align; NK_ASSERT(width % c->align == 0); node = c->active_head; prev = &c->active_head; while (node->x + width <= c->width) { int y,waste; y = nk_rp__skyline_find_min_y(c, node, node->x, width, &waste); /* actually just want to test BL */ if (c->heuristic == NK_RP_HEURISTIC_Skyline_BL_sortHeight) { /* bottom left */ if (y < best_y) { best_y = y; best = prev; } } else { /* best-fit */ if (y + height <= c->height) { /* can only use it if it first vertically */ if (y < best_y || (y == best_y && waste < best_waste)) { best_y = y; best_waste = waste; best = prev; } } } prev = &node->next; node = node->next; } best_x = (best == 0) ? 0 : (*best)->x; /* if doing best-fit (BF), we also have to try aligning right edge to each node position */ /* */ /* e.g, if fitting */ /* */ /* ____________________ */ /* |____________________| */ /* */ /* into */ /* */ /* | | */ /* | ____________| */ /* |____________| */ /* */ /* then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned */ /* */ /* This makes BF take about 2x the time */ if (c->heuristic == NK_RP_HEURISTIC_Skyline_BF_sortHeight) { tail = c->active_head; node = c->active_head; prev = &c->active_head; /* find first node that's admissible */ while (tail->x < width) tail = tail->next; while (tail) { int xpos = tail->x - width; int y,waste; NK_ASSERT(xpos >= 0); /* find the left position that matches this */ while (node->next->x <= xpos) { prev = &node->next; node = node->next; } NK_ASSERT(node->next->x > xpos && node->x <= xpos); y = nk_rp__skyline_find_min_y(c, node, xpos, width, &waste); if (y + height < c->height) { if (y <= best_y) { if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) { best_x = xpos; NK_ASSERT(y <= best_y); best_y = y; best_waste = waste; best = prev; } } } tail = tail->next; } } fr.prev_link = best; fr.x = best_x; fr.y = best_y; return fr; } NK_INTERN struct nk_rp__findresult nk_rp__skyline_pack_rectangle(struct nk_rp_context *context, int width, int height) { /* find best position according to heuristic */ struct nk_rp__findresult res = nk_rp__skyline_find_best_pos(context, width, height); struct nk_rp_node *node, *cur; /* bail if: */ /* 1. it failed */ /* 2. the best node doesn't fit (we don't always check this) */ /* 3. we're out of memory */ if (res.prev_link == 0 || res.y + height > context->height || context->free_head == 0) { res.prev_link = 0; return res; } /* on success, create new node */ node = context->free_head; node->x = (nk_rp_coord) res.x; node->y = (nk_rp_coord) (res.y + height); context->free_head = node->next; /* insert the new node into the right starting point, and */ /* let 'cur' point to the remaining nodes needing to be */ /* stitched back in */ cur = *res.prev_link; if (cur->x < res.x) { /* preserve the existing one, so start testing with the next one */ struct nk_rp_node *next = cur->next; cur->next = node; cur = next; } else { *res.prev_link = node; } /* from here, traverse cur and free the nodes, until we get to one */ /* that shouldn't be freed */ while (cur->next && cur->next->x <= res.x + width) { struct nk_rp_node *next = cur->next; /* move the current node to the free list */ cur->next = context->free_head; context->free_head = cur; cur = next; } /* stitch the list back in */ node->next = cur; if (cur->x < res.x + width) cur->x = (nk_rp_coord) (res.x + width); return res; } NK_INTERN int nk_rect_height_compare(const void *a, const void *b) { const struct nk_rp_rect *p = (const struct nk_rp_rect *) a; const struct nk_rp_rect *q = (const struct nk_rp_rect *) b; if (p->h > q->h) return -1; if (p->h < q->h) return 1; return (p->w > q->w) ? -1 : (p->w < q->w); } NK_INTERN int nk_rect_original_order(const void *a, const void *b) { const struct nk_rp_rect *p = (const struct nk_rp_rect *) a; const struct nk_rp_rect *q = (const struct nk_rp_rect *) b; return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed); } NK_INTERN void nk_rp_qsort(struct nk_rp_rect *array, unsigned int len, int(*cmp)(const void*,const void*)) { /* iterative quick sort */ #define NK_MAX_SORT_STACK 64 unsigned right, left = 0, stack[NK_MAX_SORT_STACK], pos = 0; unsigned seed = len/2 * 69069+1; for (;;) { for (; left+1 < len; len++) { struct nk_rp_rect pivot, tmp; if (pos == NK_MAX_SORT_STACK) len = stack[pos = 0]; pivot = array[left+seed%(len-left)]; seed = seed * 69069 + 1; stack[pos++] = len; for (right = left-1;;) { while (cmp(&array[++right], &pivot) < 0); while (cmp(&pivot, &array[--len]) < 0); if (right >= len) break; tmp = array[right]; array[right] = array[len]; array[len] = tmp; } } if (pos == 0) break; left = len; len = stack[--pos]; } #undef NK_MAX_SORT_STACK } NK_INTERN void nk_rp_pack_rects(struct nk_rp_context *context, struct nk_rp_rect *rects, int num_rects) { int i; /* we use the 'was_packed' field internally to allow sorting/unsorting */ for (i=0; i < num_rects; ++i) { rects[i].was_packed = i; } /* sort according to heuristic */ nk_rp_qsort(rects, (unsigned)num_rects, nk_rect_height_compare); for (i=0; i < num_rects; ++i) { struct nk_rp__findresult fr = nk_rp__skyline_pack_rectangle(context, rects[i].w, rects[i].h); if (fr.prev_link) { rects[i].x = (nk_rp_coord) fr.x; rects[i].y = (nk_rp_coord) fr.y; } else { rects[i].x = rects[i].y = NK_RP__MAXVAL; } } /* unsort */ nk_rp_qsort(rects, (unsigned)num_rects, nk_rect_original_order); /* set was_packed flags */ for (i=0; i < num_rects; ++i) rects[i].was_packed = !(rects[i].x == NK_RP__MAXVAL && rects[i].y == NK_RP__MAXVAL); } /* * ============================================================== * * TRUETYPE * * =============================================================== */ /* stb_truetype.h - v1.07 - public domain */ #define NK_TT_MAX_OVERSAMPLE 8 #define NK_TT__OVER_MASK (NK_TT_MAX_OVERSAMPLE-1) struct nk_tt_bakedchar { unsigned short x0,y0,x1,y1; /* coordinates of bbox in bitmap */ float xoff,yoff,xadvance; }; struct nk_tt_aligned_quad{ float x0,y0,s0,t0; /* top-left */ float x1,y1,s1,t1; /* bottom-right */ }; struct nk_tt_packedchar { unsigned short x0,y0,x1,y1; /* coordinates of bbox in bitmap */ float xoff,yoff,xadvance; float xoff2,yoff2; }; struct nk_tt_pack_range { float font_size; int first_unicode_codepoint_in_range; /* if non-zero, then the chars are continuous, and this is the first codepoint */ int *array_of_unicode_codepoints; /* if non-zero, then this is an array of unicode codepoints */ int num_chars; struct nk_tt_packedchar *chardata_for_range; /* output */ unsigned char h_oversample, v_oversample; /* don't set these, they're used internally */ }; struct nk_tt_pack_context { void *pack_info; int width; int height; int stride_in_bytes; int padding; unsigned int h_oversample, v_oversample; unsigned char *pixels; void *nodes; }; struct nk_tt_fontinfo { const unsigned char* data; /* pointer to .ttf file */ int fontstart;/* offset of start of font */ int numGlyphs;/* number of glyphs, needed for range checking */ int loca,head,glyf,hhea,hmtx,kern; /* table locations as offset from start of .ttf */ int index_map; /* a cmap mapping for our chosen character encoding */ int indexToLocFormat; /* format needed to map from glyph index to glyph */ }; enum { NK_TT_vmove=1, NK_TT_vline, NK_TT_vcurve }; struct nk_tt_vertex { short x,y,cx,cy; unsigned char type,padding; }; struct nk_tt__bitmap{ int w,h,stride; unsigned char *pixels; }; struct nk_tt__hheap_chunk { struct nk_tt__hheap_chunk *next; }; struct nk_tt__hheap { struct nk_allocator alloc; struct nk_tt__hheap_chunk *head; void *first_free; int num_remaining_in_head_chunk; }; struct nk_tt__edge { float x0,y0, x1,y1; int invert; }; struct nk_tt__active_edge { struct nk_tt__active_edge *next; float fx,fdx,fdy; float direction; float sy; float ey; }; struct nk_tt__point {float x,y;}; #define NK_TT_MACSTYLE_DONTCARE 0 #define NK_TT_MACSTYLE_BOLD 1 #define NK_TT_MACSTYLE_ITALIC 2 #define NK_TT_MACSTYLE_UNDERSCORE 4 #define NK_TT_MACSTYLE_NONE 8 /* <= not same as 0, this makes us check the bitfield is 0 */ enum { /* platformID */ NK_TT_PLATFORM_ID_UNICODE =0, NK_TT_PLATFORM_ID_MAC =1, NK_TT_PLATFORM_ID_ISO =2, NK_TT_PLATFORM_ID_MICROSOFT =3 }; enum { /* encodingID for NK_TT_PLATFORM_ID_UNICODE */ NK_TT_UNICODE_EID_UNICODE_1_0 =0, NK_TT_UNICODE_EID_UNICODE_1_1 =1, NK_TT_UNICODE_EID_ISO_10646 =2, NK_TT_UNICODE_EID_UNICODE_2_0_BMP=3, NK_TT_UNICODE_EID_UNICODE_2_0_FULL=4 }; enum { /* encodingID for NK_TT_PLATFORM_ID_MICROSOFT */ NK_TT_MS_EID_SYMBOL =0, NK_TT_MS_EID_UNICODE_BMP =1, NK_TT_MS_EID_SHIFTJIS =2, NK_TT_MS_EID_UNICODE_FULL =10 }; enum { /* encodingID for NK_TT_PLATFORM_ID_MAC; same as Script Manager codes */ NK_TT_MAC_EID_ROMAN =0, NK_TT_MAC_EID_ARABIC =4, NK_TT_MAC_EID_JAPANESE =1, NK_TT_MAC_EID_HEBREW =5, NK_TT_MAC_EID_CHINESE_TRAD =2, NK_TT_MAC_EID_GREEK =6, NK_TT_MAC_EID_KOREAN =3, NK_TT_MAC_EID_RUSSIAN =7 }; enum { /* languageID for NK_TT_PLATFORM_ID_MICROSOFT; same as LCID... */ /* problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs */ NK_TT_MS_LANG_ENGLISH =0x0409, NK_TT_MS_LANG_ITALIAN =0x0410, NK_TT_MS_LANG_CHINESE =0x0804, NK_TT_MS_LANG_JAPANESE =0x0411, NK_TT_MS_LANG_DUTCH =0x0413, NK_TT_MS_LANG_KOREAN =0x0412, NK_TT_MS_LANG_FRENCH =0x040c, NK_TT_MS_LANG_RUSSIAN =0x0419, NK_TT_MS_LANG_GERMAN =0x0407, NK_TT_MS_LANG_SPANISH =0x0409, NK_TT_MS_LANG_HEBREW =0x040d, NK_TT_MS_LANG_SWEDISH =0x041D }; enum { /* languageID for NK_TT_PLATFORM_ID_MAC */ NK_TT_MAC_LANG_ENGLISH =0 , NK_TT_MAC_LANG_JAPANESE =11, NK_TT_MAC_LANG_ARABIC =12, NK_TT_MAC_LANG_KOREAN =23, NK_TT_MAC_LANG_DUTCH =4 , NK_TT_MAC_LANG_RUSSIAN =32, NK_TT_MAC_LANG_FRENCH =1 , NK_TT_MAC_LANG_SPANISH =6 , NK_TT_MAC_LANG_GERMAN =2 , NK_TT_MAC_LANG_SWEDISH =5 , NK_TT_MAC_LANG_HEBREW =10, NK_TT_MAC_LANG_CHINESE_SIMPLIFIED =33, NK_TT_MAC_LANG_ITALIAN =3 , NK_TT_MAC_LANG_CHINESE_TRAD =19 }; #define nk_ttBYTE(p) (* (const nk_byte *) (p)) #define nk_ttCHAR(p) (* (const char *) (p)) #if defined(NK_BIGENDIAN) && !defined(NK_ALLOW_UNALIGNED_TRUETYPE) #define nk_ttUSHORT(p) (* (nk_ushort *) (p)) #define nk_ttSHORT(p) (* (nk_short *) (p)) #define nk_ttULONG(p) (* (nk_uint *) (p)) #define nk_ttLONG(p) (* (nk_int *) (p)) #else static nk_ushort nk_ttUSHORT(const nk_byte *p) { return (nk_ushort)(p[0]*256 + p[1]); } static nk_short nk_ttSHORT(const nk_byte *p) { return (nk_short)(p[0]*256 + p[1]); } static nk_uint nk_ttULONG(const nk_byte *p) { return (nk_uint)((p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]); } #endif #define nk_tt_tag4(p,c0,c1,c2,c3)\ ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3)) #define nk_tt_tag(p,str) nk_tt_tag4(p,str[0],str[1],str[2],str[3]) NK_INTERN int nk_tt_GetGlyphShape(const struct nk_tt_fontinfo *info, struct nk_allocator *alloc, int glyph_index, struct nk_tt_vertex **pvertices); NK_INTERN nk_uint nk_tt__find_table(const nk_byte *data, nk_uint fontstart, const char *tag) { /* @OPTIMIZE: binary search */ nk_int num_tables = nk_ttUSHORT(data+fontstart+4); nk_uint tabledir = fontstart + 12; nk_int i; for (i = 0; i < num_tables; ++i) { nk_uint loc = tabledir + (nk_uint)(16*i); if (nk_tt_tag(data+loc+0, tag)) return nk_ttULONG(data+loc+8); } return 0; } NK_INTERN int nk_tt_InitFont(struct nk_tt_fontinfo *info, const unsigned char *data2, int fontstart) { nk_uint cmap, t; nk_int i,numTables; const nk_byte *data = (const nk_byte *) data2; info->data = data; info->fontstart = fontstart; cmap = nk_tt__find_table(data, (nk_uint)fontstart, "cmap"); /* required */ info->loca = (int)nk_tt__find_table(data, (nk_uint)fontstart, "loca"); /* required */ info->head = (int)nk_tt__find_table(data, (nk_uint)fontstart, "head"); /* required */ info->glyf = (int)nk_tt__find_table(data, (nk_uint)fontstart, "glyf"); /* required */ info->hhea = (int)nk_tt__find_table(data, (nk_uint)fontstart, "hhea"); /* required */ info->hmtx = (int)nk_tt__find_table(data, (nk_uint)fontstart, "hmtx"); /* required */ info->kern = (int)nk_tt__find_table(data, (nk_uint)fontstart, "kern"); /* not required */ if (!cmap || !info->loca || !info->head || !info->glyf || !info->hhea || !info->hmtx) return 0; t = nk_tt__find_table(data, (nk_uint)fontstart, "maxp"); if (t) info->numGlyphs = nk_ttUSHORT(data+t+4); else info->numGlyphs = 0xffff; /* find a cmap encoding table we understand *now* to avoid searching */ /* later. (todo: could make this installable) */ /* the same regardless of glyph. */ numTables = nk_ttUSHORT(data + cmap + 2); info->index_map = 0; for (i=0; i < numTables; ++i) { nk_uint encoding_record = cmap + 4 + 8 * (nk_uint)i; /* find an encoding we understand: */ switch(nk_ttUSHORT(data+encoding_record)) { case NK_TT_PLATFORM_ID_MICROSOFT: switch (nk_ttUSHORT(data+encoding_record+2)) { case NK_TT_MS_EID_UNICODE_BMP: case NK_TT_MS_EID_UNICODE_FULL: /* MS/Unicode */ info->index_map = (int)(cmap + nk_ttULONG(data+encoding_record+4)); break; default: break; } break; case NK_TT_PLATFORM_ID_UNICODE: /* Mac/iOS has these */ /* all the encodingIDs are unicode, so we don't bother to check it */ info->index_map = (int)(cmap + nk_ttULONG(data+encoding_record+4)); break; default: break; } } if (info->index_map == 0) return 0; info->indexToLocFormat = nk_ttUSHORT(data+info->head + 50); return 1; } NK_INTERN int nk_tt_FindGlyphIndex(const struct nk_tt_fontinfo *info, int unicode_codepoint) { const nk_byte *data = info->data; nk_uint index_map = (nk_uint)info->index_map; nk_ushort format = nk_ttUSHORT(data + index_map + 0); if (format == 0) { /* apple byte encoding */ nk_int bytes = nk_ttUSHORT(data + index_map + 2); if (unicode_codepoint < bytes-6) return nk_ttBYTE(data + index_map + 6 + unicode_codepoint); return 0; } else if (format == 6) { nk_uint first = nk_ttUSHORT(data + index_map + 6); nk_uint count = nk_ttUSHORT(data + index_map + 8); if ((nk_uint) unicode_codepoint >= first && (nk_uint) unicode_codepoint < first+count) return nk_ttUSHORT(data + index_map + 10 + (unicode_codepoint - (int)first)*2); return 0; } else if (format == 2) { NK_ASSERT(0); /* @TODO: high-byte mapping for japanese/chinese/korean */ return 0; } else if (format == 4) { /* standard mapping for windows fonts: binary search collection of ranges */ nk_ushort segcount = nk_ttUSHORT(data+index_map+6) >> 1; nk_ushort searchRange = nk_ttUSHORT(data+index_map+8) >> 1; nk_ushort entrySelector = nk_ttUSHORT(data+index_map+10); nk_ushort rangeShift = nk_ttUSHORT(data+index_map+12) >> 1; /* do a binary search of the segments */ nk_uint endCount = index_map + 14; nk_uint search = endCount; if (unicode_codepoint > 0xffff) return 0; /* they lie from endCount .. endCount + segCount */ /* but searchRange is the nearest power of two, so... */ if (unicode_codepoint >= nk_ttUSHORT(data + search + rangeShift*2)) search += (nk_uint)(rangeShift*2); /* now decrement to bias correctly to find smallest */ search -= 2; while (entrySelector) { nk_ushort end; searchRange >>= 1; end = nk_ttUSHORT(data + search + searchRange*2); if (unicode_codepoint > end) search += (nk_uint)(searchRange*2); --entrySelector; } search += 2; { nk_ushort offset, start; nk_ushort item = (nk_ushort) ((search - endCount) >> 1); NK_ASSERT(unicode_codepoint <= nk_ttUSHORT(data + endCount + 2*item)); start = nk_ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item); if (unicode_codepoint < start) return 0; offset = nk_ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item); if (offset == 0) return (nk_ushort) (unicode_codepoint + nk_ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item)); return nk_ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item); } } else if (format == 12 || format == 13) { nk_uint ngroups = nk_ttULONG(data+index_map+12); nk_int low,high; low = 0; high = (nk_int)ngroups; /* Binary search the right group. */ while (low < high) { nk_int mid = low + ((high-low) >> 1); /* rounds down, so low <= mid < high */ nk_uint start_char = nk_ttULONG(data+index_map+16+mid*12); nk_uint end_char = nk_ttULONG(data+index_map+16+mid*12+4); if ((nk_uint) unicode_codepoint < start_char) high = mid; else if ((nk_uint) unicode_codepoint > end_char) low = mid+1; else { nk_uint start_glyph = nk_ttULONG(data+index_map+16+mid*12+8); if (format == 12) return (int)start_glyph + (int)unicode_codepoint - (int)start_char; else /* format == 13 */ return (int)start_glyph; } } return 0; /* not found */ } /* @TODO */ NK_ASSERT(0); return 0; } NK_INTERN void nk_tt_setvertex(struct nk_tt_vertex *v, nk_byte type, nk_int x, nk_int y, nk_int cx, nk_int cy) { v->type = type; v->x = (nk_short) x; v->y = (nk_short) y; v->cx = (nk_short) cx; v->cy = (nk_short) cy; } NK_INTERN int nk_tt__GetGlyfOffset(const struct nk_tt_fontinfo *info, int glyph_index) { int g1,g2; if (glyph_index >= info->numGlyphs) return -1; /* glyph index out of range */ if (info->indexToLocFormat >= 2) return -1; /* unknown index->glyph map format */ if (info->indexToLocFormat == 0) { g1 = info->glyf + nk_ttUSHORT(info->data + info->loca + glyph_index * 2) * 2; g2 = info->glyf + nk_ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2; } else { g1 = info->glyf + (int)nk_ttULONG (info->data + info->loca + glyph_index * 4); g2 = info->glyf + (int)nk_ttULONG (info->data + info->loca + glyph_index * 4 + 4); } return g1==g2 ? -1 : g1; /* if length is 0, return -1 */ } NK_INTERN int nk_tt_GetGlyphBox(const struct nk_tt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) { int g = nk_tt__GetGlyfOffset(info, glyph_index); if (g < 0) return 0; if (x0) *x0 = nk_ttSHORT(info->data + g + 2); if (y0) *y0 = nk_ttSHORT(info->data + g + 4); if (x1) *x1 = nk_ttSHORT(info->data + g + 6); if (y1) *y1 = nk_ttSHORT(info->data + g + 8); return 1; } NK_INTERN int nk_tt__close_shape(struct nk_tt_vertex *vertices, int num_vertices, int was_off, int start_off, nk_int sx, nk_int sy, nk_int scx, nk_int scy, nk_int cx, nk_int cy) { if (start_off) { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy); nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, sx,sy,scx,scy); } else { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve,sx,sy,cx,cy); else nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vline,sx,sy,0,0); } return num_vertices; } NK_INTERN int nk_tt_GetGlyphShape(const struct nk_tt_fontinfo *info, struct nk_allocator *alloc, int glyph_index, struct nk_tt_vertex **pvertices) { nk_short numberOfContours; const nk_byte *endPtsOfContours; const nk_byte *data = info->data; struct nk_tt_vertex *vertices=0; int num_vertices=0; int g = nk_tt__GetGlyfOffset(info, glyph_index); *pvertices = 0; if (g < 0) return 0; numberOfContours = nk_ttSHORT(data + g); if (numberOfContours > 0) { nk_byte flags=0,flagcount; nk_int ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0; nk_int x,y,cx,cy,sx,sy, scx,scy; const nk_byte *points; endPtsOfContours = (data + g + 10); ins = nk_ttUSHORT(data + g + 10 + numberOfContours * 2); points = data + g + 10 + numberOfContours * 2 + 2 + ins; n = 1+nk_ttUSHORT(endPtsOfContours + numberOfContours*2-2); m = n + 2*numberOfContours; /* a loose bound on how many vertices we might need */ vertices = (struct nk_tt_vertex *)alloc->alloc(alloc->userdata, 0, (nk_size)m * sizeof(vertices[0])); if (vertices == 0) return 0; next_move = 0; flagcount=0; /* in first pass, we load uninterpreted data into the allocated array */ /* above, shifted to the end of the array so we won't overwrite it when */ /* we create our final data starting from the front */ off = m - n; /* starting offset for uninterpreted data, regardless of how m ends up being calculated */ /* first load flags */ for (i=0; i < n; ++i) { if (flagcount == 0) { flags = *points++; if (flags & 8) flagcount = *points++; } else --flagcount; vertices[off+i].type = flags; } /* now load x coordinates */ x=0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; if (flags & 2) { nk_short dx = *points++; x += (flags & 16) ? dx : -dx; /* ??? */ } else { if (!(flags & 16)) { x = x + (nk_short) (points[0]*256 + points[1]); points += 2; } } vertices[off+i].x = (nk_short) x; } /* now load y coordinates */ y=0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; if (flags & 4) { nk_short dy = *points++; y += (flags & 32) ? dy : -dy; /* ??? */ } else { if (!(flags & 32)) { y = y + (nk_short) (points[0]*256 + points[1]); points += 2; } } vertices[off+i].y = (nk_short) y; } /* now convert them to our format */ num_vertices=0; sx = sy = cx = cy = scx = scy = 0; for (i=0; i < n; ++i) { flags = vertices[off+i].type; x = (nk_short) vertices[off+i].x; y = (nk_short) vertices[off+i].y; if (next_move == i) { if (i != 0) num_vertices = nk_tt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); /* now start the new one */ start_off = !(flags & 1); if (start_off) { /* if we start off with an off-curve point, then when we need to find a point on the curve */ /* where we can start, and we need to save some state for when we wraparound. */ scx = x; scy = y; if (!(vertices[off+i+1].type & 1)) { /* next point is also a curve point, so interpolate an on-point curve */ sx = (x + (nk_int) vertices[off+i+1].x) >> 1; sy = (y + (nk_int) vertices[off+i+1].y) >> 1; } else { /* otherwise just use the next point as our start point */ sx = (nk_int) vertices[off+i+1].x; sy = (nk_int) vertices[off+i+1].y; ++i; /* we're using point i+1 as the starting point, so skip it */ } } else { sx = x; sy = y; } nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vmove,sx,sy,0,0); was_off = 0; next_move = 1 + nk_ttUSHORT(endPtsOfContours+j*2); ++j; } else { if (!(flags & 1)) { /* if it's a curve */ if (was_off) /* two off-curve control points in a row means interpolate an on-curve midpoint */ nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy); cx = x; cy = y; was_off = 1; } else { if (was_off) nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vcurve, x,y, cx, cy); else nk_tt_setvertex(&vertices[num_vertices++], NK_TT_vline, x,y,0,0); was_off = 0; } } } num_vertices = nk_tt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); } else if (numberOfContours == -1) { /* Compound shapes. */ int more = 1; const nk_byte *comp = data + g + 10; num_vertices = 0; vertices = 0; while (more) { nk_ushort flags, gidx; int comp_num_verts = 0, i; struct nk_tt_vertex *comp_verts = 0, *tmp = 0; float mtx[6] = {1,0,0,1,0,0}, m, n; flags = (nk_ushort)nk_ttSHORT(comp); comp+=2; gidx = (nk_ushort)nk_ttSHORT(comp); comp+=2; if (flags & 2) { /* XY values */ if (flags & 1) { /* shorts */ mtx[4] = nk_ttSHORT(comp); comp+=2; mtx[5] = nk_ttSHORT(comp); comp+=2; } else { mtx[4] = nk_ttCHAR(comp); comp+=1; mtx[5] = nk_ttCHAR(comp); comp+=1; } } else { /* @TODO handle matching point */ NK_ASSERT(0); } if (flags & (1<<3)) { /* WE_HAVE_A_SCALE */ mtx[0] = mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = mtx[2] = 0; } else if (flags & (1<<6)) { /* WE_HAVE_AN_X_AND_YSCALE */ mtx[0] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = mtx[2] = 0; mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; } else if (flags & (1<<7)) { /* WE_HAVE_A_TWO_BY_TWO */ mtx[0] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[1] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[2] = nk_ttSHORT(comp)/16384.0f; comp+=2; mtx[3] = nk_ttSHORT(comp)/16384.0f; comp+=2; } /* Find transformation scales. */ m = (float) NK_SQRT(mtx[0]*mtx[0] + mtx[1]*mtx[1]); n = (float) NK_SQRT(mtx[2]*mtx[2] + mtx[3]*mtx[3]); /* Get indexed glyph. */ comp_num_verts = nk_tt_GetGlyphShape(info, alloc, gidx, &comp_verts); if (comp_num_verts > 0) { /* Transform vertices. */ for (i = 0; i < comp_num_verts; ++i) { struct nk_tt_vertex* v = &comp_verts[i]; short x,y; x=v->x; y=v->y; v->x = (short)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); v->y = (short)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); x=v->cx; y=v->cy; v->cx = (short)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); v->cy = (short)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); } /* Append vertices. */ tmp = (struct nk_tt_vertex*)alloc->alloc(alloc->userdata, 0, (nk_size)(num_vertices+comp_num_verts)*sizeof(struct nk_tt_vertex)); if (!tmp) { if (vertices) alloc->free(alloc->userdata, vertices); if (comp_verts) alloc->free(alloc->userdata, comp_verts); return 0; } if (num_vertices > 0) NK_MEMCPY(tmp, vertices, (nk_size)num_vertices*sizeof(struct nk_tt_vertex)); NK_MEMCPY(tmp+num_vertices, comp_verts, (nk_size)comp_num_verts*sizeof(struct nk_tt_vertex)); if (vertices) alloc->free(alloc->userdata,vertices); vertices = tmp; alloc->free(alloc->userdata,comp_verts); num_vertices += comp_num_verts; } /* More components ? */ more = flags & (1<<5); } } else if (numberOfContours < 0) { /* @TODO other compound variations? */ NK_ASSERT(0); } else { /* numberOfCounters == 0, do nothing */ } *pvertices = vertices; return num_vertices; } NK_INTERN void nk_tt_GetGlyphHMetrics(const struct nk_tt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing) { nk_ushort numOfLongHorMetrics = nk_ttUSHORT(info->data+info->hhea + 34); if (glyph_index < numOfLongHorMetrics) { if (advanceWidth) *advanceWidth = nk_ttSHORT(info->data + info->hmtx + 4*glyph_index); if (leftSideBearing) *leftSideBearing = nk_ttSHORT(info->data + info->hmtx + 4*glyph_index + 2); } else { if (advanceWidth) *advanceWidth = nk_ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1)); if (leftSideBearing) *leftSideBearing = nk_ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics)); } } NK_INTERN void nk_tt_GetFontVMetrics(const struct nk_tt_fontinfo *info, int *ascent, int *descent, int *lineGap) { if (ascent ) *ascent = nk_ttSHORT(info->data+info->hhea + 4); if (descent) *descent = nk_ttSHORT(info->data+info->hhea + 6); if (lineGap) *lineGap = nk_ttSHORT(info->data+info->hhea + 8); } NK_INTERN float nk_tt_ScaleForPixelHeight(const struct nk_tt_fontinfo *info, float height) { int fheight = nk_ttSHORT(info->data + info->hhea + 4) - nk_ttSHORT(info->data + info->hhea + 6); return (float) height / (float)fheight; } NK_INTERN float nk_tt_ScaleForMappingEmToPixels(const struct nk_tt_fontinfo *info, float pixels) { int unitsPerEm = nk_ttUSHORT(info->data + info->head + 18); return pixels / (float)unitsPerEm; } /*------------------------------------------------------------- * antialiasing software rasterizer * --------------------------------------------------------------*/ NK_INTERN void nk_tt_GetGlyphBitmapBoxSubpixel(const struct nk_tt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) { int x0,y0,x1,y1; if (!nk_tt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) { /* e.g. space character */ if (ix0) *ix0 = 0; if (iy0) *iy0 = 0; if (ix1) *ix1 = 0; if (iy1) *iy1 = 0; } else { /* move to integral bboxes (treating pixels as little squares, what pixels get touched)? */ if (ix0) *ix0 = nk_ifloorf((float)x0 * scale_x + shift_x); if (iy0) *iy0 = nk_ifloorf((float)-y1 * scale_y + shift_y); if (ix1) *ix1 = nk_iceilf ((float)x1 * scale_x + shift_x); if (iy1) *iy1 = nk_iceilf ((float)-y0 * scale_y + shift_y); } } NK_INTERN void nk_tt_GetGlyphBitmapBox(const struct nk_tt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) { nk_tt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1); } /*------------------------------------------------------------- * Rasterizer * --------------------------------------------------------------*/ NK_INTERN void* nk_tt__hheap_alloc(struct nk_tt__hheap *hh, nk_size size) { if (hh->first_free) { void *p = hh->first_free; hh->first_free = * (void **) p; return p; } else { if (hh->num_remaining_in_head_chunk == 0) { int count = (size < 32 ? 2000 : size < 128 ? 800 : 100); struct nk_tt__hheap_chunk *c = (struct nk_tt__hheap_chunk *) hh->alloc.alloc(hh->alloc.userdata, 0, sizeof(struct nk_tt__hheap_chunk) + size * (nk_size)count); if (c == 0) return 0; c->next = hh->head; hh->head = c; hh->num_remaining_in_head_chunk = count; } --hh->num_remaining_in_head_chunk; return (char *) (hh->head) + size * (nk_size)hh->num_remaining_in_head_chunk; } } NK_INTERN void nk_tt__hheap_free(struct nk_tt__hheap *hh, void *p) { *(void **) p = hh->first_free; hh->first_free = p; } NK_INTERN void nk_tt__hheap_cleanup(struct nk_tt__hheap *hh) { struct nk_tt__hheap_chunk *c = hh->head; while (c) { struct nk_tt__hheap_chunk *n = c->next; hh->alloc.free(hh->alloc.userdata, c); c = n; } } NK_INTERN struct nk_tt__active_edge* nk_tt__new_active(struct nk_tt__hheap *hh, struct nk_tt__edge *e, int off_x, float start_point) { struct nk_tt__active_edge *z = (struct nk_tt__active_edge *) nk_tt__hheap_alloc(hh, sizeof(*z)); float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); /*STBTT_assert(e->y0 <= start_point); */ if (!z) return z; z->fdx = dxdy; z->fdy = (dxdy != 0) ? (1/dxdy): 0; z->fx = e->x0 + dxdy * (start_point - e->y0); z->fx -= (float)off_x; z->direction = e->invert ? 1.0f : -1.0f; z->sy = e->y0; z->ey = e->y1; z->next = 0; return z; } NK_INTERN void nk_tt__handle_clipped_edge(float *scanline, int x, struct nk_tt__active_edge *e, float x0, float y0, float x1, float y1) { if (y0 == y1) return; NK_ASSERT(y0 < y1); NK_ASSERT(e->sy <= e->ey); if (y0 > e->ey) return; if (y1 < e->sy) return; if (y0 < e->sy) { x0 += (x1-x0) * (e->sy - y0) / (y1-y0); y0 = e->sy; } if (y1 > e->ey) { x1 += (x1-x0) * (e->ey - y1) / (y1-y0); y1 = e->ey; } if (x0 == x) NK_ASSERT(x1 <= x+1); else if (x0 == x+1) NK_ASSERT(x1 >= x); else if (x0 <= x) NK_ASSERT(x1 <= x); else if (x0 >= x+1) NK_ASSERT(x1 >= x+1); else NK_ASSERT(x1 >= x && x1 <= x+1); if (x0 <= x && x1 <= x) scanline[x] += e->direction * (y1-y0); else if (x0 >= x+1 && x1 >= x+1); else { NK_ASSERT(x0 >= x && x0 <= x+1 && x1 >= x && x1 <= x+1); /* coverage = 1 - average x position */ scanline[x] += (float)e->direction * (float)(y1-y0) * (1.0f-((x0-(float)x)+(x1-(float)x))/2.0f); } } NK_INTERN void nk_tt__fill_active_edges_new(float *scanline, float *scanline_fill, int len, struct nk_tt__active_edge *e, float y_top) { float y_bottom = y_top+1; while (e) { /* brute force every pixel */ /* compute intersection points with top & bottom */ NK_ASSERT(e->ey >= y_top); if (e->fdx == 0) { float x0 = e->fx; if (x0 < len) { if (x0 >= 0) { nk_tt__handle_clipped_edge(scanline,(int) x0,e, x0,y_top, x0,y_bottom); nk_tt__handle_clipped_edge(scanline_fill-1,(int) x0+1,e, x0,y_top, x0,y_bottom); } else { nk_tt__handle_clipped_edge(scanline_fill-1,0,e, x0,y_top, x0,y_bottom); } } } else { float x0 = e->fx; float dx = e->fdx; float xb = x0 + dx; float x_top, x_bottom; float y0,y1; float dy = e->fdy; NK_ASSERT(e->sy <= y_bottom && e->ey >= y_top); /* compute endpoints of line segment clipped to this scanline (if the */ /* line segment starts on this scanline. x0 is the intersection of the */ /* line with y_top, but that may be off the line segment. */ if (e->sy > y_top) { x_top = x0 + dx * (e->sy - y_top); y0 = e->sy; } else { x_top = x0; y0 = y_top; } if (e->ey < y_bottom) { x_bottom = x0 + dx * (e->ey - y_top); y1 = e->ey; } else { x_bottom = xb; y1 = y_bottom; } if (x_top >= 0 && x_bottom >= 0 && x_top < len && x_bottom < len) { /* from here on, we don't have to range check x values */ if ((int) x_top == (int) x_bottom) { float height; /* simple case, only spans one pixel */ int x = (int) x_top; height = y1 - y0; NK_ASSERT(x >= 0 && x < len); scanline[x] += e->direction * (1.0f-(((float)x_top - (float)x) + ((float)x_bottom-(float)x))/2.0f) * (float)height; scanline_fill[x] += e->direction * (float)height; /* everything right of this pixel is filled */ } else { int x,x1,x2; float y_crossing, step, sign, area; /* covers 2+ pixels */ if (x_top > x_bottom) { /* flip scanline vertically; signed area is the same */ float t; y0 = y_bottom - (y0 - y_top); y1 = y_bottom - (y1 - y_top); t = y0; y0 = y1; y1 = t; t = x_bottom; x_bottom = x_top; x_top = t; dx = -dx; dy = -dy; t = x0; x0 = xb; xb = t; } x1 = (int) x_top; x2 = (int) x_bottom; /* compute intersection with y axis at x1+1 */ y_crossing = ((float)x1+1 - (float)x0) * (float)dy + (float)y_top; sign = e->direction; /* area of the rectangle covered from y0..y_crossing */ area = sign * (y_crossing-y0); /* area of the triangle (x_top,y0), (x+1,y0), (x+1,y_crossing) */ scanline[x1] += area * (1.0f-((float)((float)x_top - (float)x1)+(float)(x1+1-x1))/2.0f); step = sign * dy; for (x = x1+1; x < x2; ++x) { scanline[x] += area + step/2; area += step; } y_crossing += (float)dy * (float)(x2 - (x1+1)); scanline[x2] += area + sign * (1.0f-((float)(x2-x2)+((float)x_bottom-(float)x2))/2.0f) * (y1-y_crossing); scanline_fill[x2] += sign * (y1-y0); } } else { /* if edge goes outside of box we're drawing, we require */ /* clipping logic. since this does not match the intended use */ /* of this library, we use a different, very slow brute */ /* force implementation */ int x; for (x=0; x < len; ++x) { /* cases: */ /* */ /* there can be up to two intersections with the pixel. any intersection */ /* with left or right edges can be handled by splitting into two (or three) */ /* regions. intersections with top & bottom do not necessitate case-wise logic. */ /* */ /* the old way of doing this found the intersections with the left & right edges, */ /* then used some simple logic to produce up to three segments in sorted order */ /* from top-to-bottom. however, this had a problem: if an x edge was epsilon */ /* across the x border, then the corresponding y position might not be distinct */ /* from the other y segment, and it might ignored as an empty segment. to avoid */ /* that, we need to explicitly produce segments based on x positions. */ /* rename variables to clear pairs */ float ya = y_top; float x1 = (float) (x); float x2 = (float) (x+1); float x3 = xb; float y3 = y_bottom; float yb,y2; yb = ((float)x - x0) / dx + y_top; y2 = ((float)x+1 - x0) / dx + y_top; if (x0 < x1 && x3 > x2) { /* three segments descending down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else if (x3 < x1 && x0 > x2) { /* three segments descending down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x0 < x1 && x3 > x1) { /* two segments across x, down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x3 < x1 && x0 > x1) { /* two segments across x, down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x1,yb); nk_tt__handle_clipped_edge(scanline,x,e, x1,yb, x3,y3); } else if (x0 < x2 && x3 > x2) { /* two segments across x+1, down-right */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else if (x3 < x2 && x0 > x2) { /* two segments across x+1, down-left */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x2,y2); nk_tt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); } else { /* one segment */ nk_tt__handle_clipped_edge(scanline,x,e, x0,ya, x3,y3); } } } } e = e->next; } } NK_INTERN void nk_tt__rasterize_sorted_edges(struct nk_tt__bitmap *result, struct nk_tt__edge *e, int n, int vsubsample, int off_x, int off_y, struct nk_allocator *alloc) { /* directly AA rasterize edges w/o supersampling */ struct nk_tt__hheap hh; struct nk_tt__active_edge *active = 0; int y,j=0, i; float scanline_data[129], *scanline, *scanline2; NK_UNUSED(vsubsample); nk_zero_struct(hh); hh.alloc = *alloc; if (result->w > 64) scanline = (float *) alloc->alloc(alloc->userdata,0, (nk_size)(result->w*2+1) * sizeof(float)); else scanline = scanline_data; scanline2 = scanline + result->w; y = off_y; e[n].y0 = (float) (off_y + result->h) + 1; while (j < result->h) { /* find center of pixel for this scanline */ float scan_y_top = (float)y + 0.0f; float scan_y_bottom = (float)y + 1.0f; struct nk_tt__active_edge **step = &active; NK_MEMSET(scanline , 0, (nk_size)result->w*sizeof(scanline[0])); NK_MEMSET(scanline2, 0, (nk_size)(result->w+1)*sizeof(scanline[0])); /* update all active edges; */ /* remove all active edges that terminate before the top of this scanline */ while (*step) { struct nk_tt__active_edge * z = *step; if (z->ey <= scan_y_top) { *step = z->next; /* delete from list */ NK_ASSERT(z->direction); z->direction = 0; nk_tt__hheap_free(&hh, z); } else { step = &((*step)->next); /* advance through list */ } } /* insert all edges that start before the bottom of this scanline */ while (e->y0 <= scan_y_bottom) { if (e->y0 != e->y1) { struct nk_tt__active_edge *z = nk_tt__new_active(&hh, e, off_x, scan_y_top); if (z != 0) { NK_ASSERT(z->ey >= scan_y_top); /* insert at front */ z->next = active; active = z; } } ++e; } /* now process all active edges */ if (active) nk_tt__fill_active_edges_new(scanline, scanline2+1, result->w, active, scan_y_top); { float sum = 0; for (i=0; i < result->w; ++i) { float k; int m; sum += scanline2[i]; k = scanline[i] + sum; k = (float) NK_ABS(k) * 255.0f + 0.5f; m = (int) k; if (m > 255) m = 255; result->pixels[j*result->stride + i] = (unsigned char) m; } } /* advance all the edges */ step = &active; while (*step) { struct nk_tt__active_edge *z = *step; z->fx += z->fdx; /* advance to position for current scanline */ step = &((*step)->next); /* advance through list */ } ++y; ++j; } nk_tt__hheap_cleanup(&hh); if (scanline != scanline_data) alloc->free(alloc->userdata, scanline); } NK_INTERN void nk_tt__sort_edges_ins_sort(struct nk_tt__edge *p, int n) { int i,j; #define NK_TT__COMPARE(a,b) ((a)->y0 < (b)->y0) for (i=1; i < n; ++i) { struct nk_tt__edge t = p[i], *a = &t; j = i; while (j > 0) { struct nk_tt__edge *b = &p[j-1]; int c = NK_TT__COMPARE(a,b); if (!c) break; p[j] = p[j-1]; --j; } if (i != j) p[j] = t; } } NK_INTERN void nk_tt__sort_edges_quicksort(struct nk_tt__edge *p, int n) { /* threshold for transitioning to insertion sort */ while (n > 12) { struct nk_tt__edge t; int c01,c12,c,m,i,j; /* compute median of three */ m = n >> 1; c01 = NK_TT__COMPARE(&p[0],&p[m]); c12 = NK_TT__COMPARE(&p[m],&p[n-1]); /* if 0 >= mid >= end, or 0 < mid < end, then use mid */ if (c01 != c12) { /* otherwise, we'll need to swap something else to middle */ int z; c = NK_TT__COMPARE(&p[0],&p[n-1]); /* 0>mid && midn => n; 0 0 */ /* 0n: 0>n => 0; 0 n */ z = (c == c12) ? 0 : n-1; t = p[z]; p[z] = p[m]; p[m] = t; } /* now p[m] is the median-of-three */ /* swap it to the beginning so it won't move around */ t = p[0]; p[0] = p[m]; p[m] = t; /* partition loop */ i=1; j=n-1; for(;;) { /* handling of equality is crucial here */ /* for sentinels & efficiency with duplicates */ for (;;++i) { if (!NK_TT__COMPARE(&p[i], &p[0])) break; } for (;;--j) { if (!NK_TT__COMPARE(&p[0], &p[j])) break; } /* make sure we haven't crossed */ if (i >= j) break; t = p[i]; p[i] = p[j]; p[j] = t; ++i; --j; } /* recurse on smaller side, iterate on larger */ if (j < (n-i)) { nk_tt__sort_edges_quicksort(p,j); p = p+i; n = n-i; } else { nk_tt__sort_edges_quicksort(p+i, n-i); n = j; } } } NK_INTERN void nk_tt__sort_edges(struct nk_tt__edge *p, int n) { nk_tt__sort_edges_quicksort(p, n); nk_tt__sort_edges_ins_sort(p, n); } NK_INTERN void nk_tt__rasterize(struct nk_tt__bitmap *result, struct nk_tt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, struct nk_allocator *alloc) { float y_scale_inv = invert ? -scale_y : scale_y; struct nk_tt__edge *e; int n,i,j,k,m; int vsubsample = 1; /* vsubsample should divide 255 evenly; otherwise we won't reach full opacity */ /* now we have to blow out the windings into explicit edge lists */ n = 0; for (i=0; i < windings; ++i) n += wcount[i]; e = (struct nk_tt__edge*) alloc->alloc(alloc->userdata, 0,(sizeof(*e) * (nk_size)(n+1))); if (e == 0) return; n = 0; m=0; for (i=0; i < windings; ++i) { struct nk_tt__point *p = pts + m; m += wcount[i]; j = wcount[i]-1; for (k=0; k < wcount[i]; j=k++) { int a=k,b=j; /* skip the edge if horizontal */ if (p[j].y == p[k].y) continue; /* add edge from j to k to the list */ e[n].invert = 0; if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) { e[n].invert = 1; a=j,b=k; } e[n].x0 = p[a].x * scale_x + shift_x; e[n].y0 = (p[a].y * y_scale_inv + shift_y) * (float)vsubsample; e[n].x1 = p[b].x * scale_x + shift_x; e[n].y1 = (p[b].y * y_scale_inv + shift_y) * (float)vsubsample; ++n; } } /* now sort the edges by their highest point (should snap to integer, and then by x) */ /*STBTT_sort(e, n, sizeof(e[0]), nk_tt__edge_compare); */ nk_tt__sort_edges(e, n); /* now, traverse the scanlines and find the intersections on each scanline, use xor winding rule */ nk_tt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, alloc); alloc->free(alloc->userdata, e); } NK_INTERN void nk_tt__add_point(struct nk_tt__point *points, int n, float x, float y) { if (!points) return; /* during first pass, it's unallocated */ points[n].x = x; points[n].y = y; } NK_INTERN int nk_tt__tesselate_curve(struct nk_tt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n) { /* tesselate until threshold p is happy... * @TODO warped to compensate for non-linear stretching */ /* midpoint */ float mx = (x0 + 2*x1 + x2)/4; float my = (y0 + 2*y1 + y2)/4; /* versus directly drawn line */ float dx = (x0+x2)/2 - mx; float dy = (y0+y2)/2 - my; if (n > 16) /* 65536 segments on one curve better be enough! */ return 1; /* half-pixel error allowed... need to be smaller if AA */ if (dx*dx+dy*dy > objspace_flatness_squared) { nk_tt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1); nk_tt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1); } else { nk_tt__add_point(points, *num_points,x2,y2); *num_points = *num_points+1; } return 1; } NK_INTERN struct nk_tt__point* nk_tt_FlattenCurves(struct nk_tt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, struct nk_allocator *alloc) { /* returns number of contours */ struct nk_tt__point *points=0; int num_points=0; float objspace_flatness_squared = objspace_flatness * objspace_flatness; int i; int n=0; int start=0; int pass; /* count how many "moves" there are to get the contour count */ for (i=0; i < num_verts; ++i) if (vertices[i].type == NK_TT_vmove) ++n; *num_contours = n; if (n == 0) return 0; *contour_lengths = (int *) alloc->alloc(alloc->userdata,0, (sizeof(**contour_lengths) * (nk_size)n)); if (*contour_lengths == 0) { *num_contours = 0; return 0; } /* make two passes through the points so we don't need to realloc */ for (pass=0; pass < 2; ++pass) { float x=0,y=0; if (pass == 1) { points = (struct nk_tt__point *) alloc->alloc(alloc->userdata,0, (nk_size)num_points * sizeof(points[0])); if (points == 0) goto error; } num_points = 0; n= -1; for (i=0; i < num_verts; ++i) { switch (vertices[i].type) { case NK_TT_vmove: /* start the next contour */ if (n >= 0) (*contour_lengths)[n] = num_points - start; ++n; start = num_points; x = vertices[i].x, y = vertices[i].y; nk_tt__add_point(points, num_points++, x,y); break; case NK_TT_vline: x = vertices[i].x, y = vertices[i].y; nk_tt__add_point(points, num_points++, x, y); break; case NK_TT_vcurve: nk_tt__tesselate_curve(points, &num_points, x,y, vertices[i].cx, vertices[i].cy, vertices[i].x, vertices[i].y, objspace_flatness_squared, 0); x = vertices[i].x, y = vertices[i].y; break; default: break; } } (*contour_lengths)[n] = num_points - start; } return points; error: alloc->free(alloc->userdata, points); alloc->free(alloc->userdata, *contour_lengths); *contour_lengths = 0; *num_contours = 0; return 0; } NK_INTERN void nk_tt_Rasterize(struct nk_tt__bitmap *result, float flatness_in_pixels, struct nk_tt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, struct nk_allocator *alloc) { float scale = scale_x > scale_y ? scale_y : scale_x; int winding_count, *winding_lengths; struct nk_tt__point *windings = nk_tt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, alloc); NK_ASSERT(alloc); if (windings) { nk_tt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, alloc); alloc->free(alloc->userdata, winding_lengths); alloc->free(alloc->userdata, windings); } } NK_INTERN void nk_tt_MakeGlyphBitmapSubpixel(const struct nk_tt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, struct nk_allocator *alloc) { int ix0,iy0; struct nk_tt_vertex *vertices; int num_verts = nk_tt_GetGlyphShape(info, alloc, glyph, &vertices); struct nk_tt__bitmap gbm; nk_tt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0); gbm.pixels = output; gbm.w = out_w; gbm.h = out_h; gbm.stride = out_stride; if (gbm.w && gbm.h) nk_tt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, alloc); alloc->free(alloc->userdata, vertices); } /*------------------------------------------------------------- * Bitmap baking * --------------------------------------------------------------*/ NK_INTERN int nk_tt_PackBegin(struct nk_tt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, struct nk_allocator *alloc) { int num_nodes = pw - padding; struct nk_rp_context *context = (struct nk_rp_context *) alloc->alloc(alloc->userdata,0, sizeof(*context)); struct nk_rp_node *nodes = (struct nk_rp_node*) alloc->alloc(alloc->userdata,0, (sizeof(*nodes ) * (nk_size)num_nodes)); if (context == 0 || nodes == 0) { if (context != 0) alloc->free(alloc->userdata, context); if (nodes != 0) alloc->free(alloc->userdata, nodes); return 0; } spc->width = pw; spc->height = ph; spc->pixels = pixels; spc->pack_info = context; spc->nodes = nodes; spc->padding = padding; spc->stride_in_bytes = (stride_in_bytes != 0) ? stride_in_bytes : pw; spc->h_oversample = 1; spc->v_oversample = 1; nk_rp_init_target(context, pw-padding, ph-padding, nodes, num_nodes); if (pixels) NK_MEMSET(pixels, 0, (nk_size)(pw*ph)); /* background of 0 around pixels */ return 1; } NK_INTERN void nk_tt_PackEnd(struct nk_tt_pack_context *spc, struct nk_allocator *alloc) { alloc->free(alloc->userdata, spc->nodes); alloc->free(alloc->userdata, spc->pack_info); } NK_INTERN void nk_tt_PackSetOversampling(struct nk_tt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample) { NK_ASSERT(h_oversample <= NK_TT_MAX_OVERSAMPLE); NK_ASSERT(v_oversample <= NK_TT_MAX_OVERSAMPLE); if (h_oversample <= NK_TT_MAX_OVERSAMPLE) spc->h_oversample = h_oversample; if (v_oversample <= NK_TT_MAX_OVERSAMPLE) spc->v_oversample = v_oversample; } NK_INTERN void nk_tt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, int kernel_width) { unsigned char buffer[NK_TT_MAX_OVERSAMPLE]; int safe_w = w - kernel_width; int j; for (j=0; j < h; ++j) { int i; unsigned int total; NK_MEMSET(buffer, 0, (nk_size)kernel_width); total = 0; /* make kernel_width a constant in common cases so compiler can optimize out the divide */ switch (kernel_width) { case 2: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 2); } break; case 3: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 3); } break; case 4: for (i=0; i <= safe_w; ++i) { total += (unsigned int)pixels[i] - buffer[i & NK_TT__OVER_MASK]; buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 4); } break; case 5: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / 5); } break; default: for (i=0; i <= safe_w; ++i) { total += (unsigned int)(pixels[i] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i]; pixels[i] = (unsigned char) (total / (unsigned int)kernel_width); } break; } for (; i < w; ++i) { NK_ASSERT(pixels[i] == 0); total -= (unsigned int)(buffer[i & NK_TT__OVER_MASK]); pixels[i] = (unsigned char) (total / (unsigned int)kernel_width); } pixels += stride_in_bytes; } } NK_INTERN void nk_tt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, int kernel_width) { unsigned char buffer[NK_TT_MAX_OVERSAMPLE]; int safe_h = h - kernel_width; int j; for (j=0; j < w; ++j) { int i; unsigned int total; NK_MEMSET(buffer, 0, (nk_size)kernel_width); total = 0; /* make kernel_width a constant in common cases so compiler can optimize out the divide */ switch (kernel_width) { case 2: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 2); } break; case 3: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 3); } break; case 4: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 4); } break; case 5: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / 5); } break; default: for (i=0; i <= safe_h; ++i) { total += (unsigned int)(pixels[i*stride_in_bytes] - buffer[i & NK_TT__OVER_MASK]); buffer[(i+kernel_width) & NK_TT__OVER_MASK] = pixels[i*stride_in_bytes]; pixels[i*stride_in_bytes] = (unsigned char) (total / (unsigned int)kernel_width); } break; } for (; i < h; ++i) { NK_ASSERT(pixels[i*stride_in_bytes] == 0); total -= (unsigned int)(buffer[i & NK_TT__OVER_MASK]); pixels[i*stride_in_bytes] = (unsigned char) (total / (unsigned int)kernel_width); } pixels += 1; } } NK_INTERN float nk_tt__oversample_shift(int oversample) { if (!oversample) return 0.0f; /* The prefilter is a box filter of width "oversample", */ /* which shifts phase by (oversample - 1)/2 pixels in */ /* oversampled space. We want to shift in the opposite */ /* direction to counter this. */ return (float)-(oversample - 1) / (2.0f * (float)oversample); } NK_INTERN int nk_tt_PackFontRangesGatherRects(struct nk_tt_pack_context *spc, struct nk_tt_fontinfo *info, struct nk_tt_pack_range *ranges, int num_ranges, struct nk_rp_rect *rects) { /* rects array must be big enough to accommodate all characters in the given ranges */ int i,j,k; k = 0; for (i=0; i < num_ranges; ++i) { float fh = ranges[i].font_size; float scale = (fh > 0) ? nk_tt_ScaleForPixelHeight(info, fh): nk_tt_ScaleForMappingEmToPixels(info, -fh); ranges[i].h_oversample = (unsigned char) spc->h_oversample; ranges[i].v_oversample = (unsigned char) spc->v_oversample; for (j=0; j < ranges[i].num_chars; ++j) { int x0,y0,x1,y1; int codepoint = ranges[i].first_unicode_codepoint_in_range ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; int glyph = nk_tt_FindGlyphIndex(info, codepoint); nk_tt_GetGlyphBitmapBoxSubpixel(info,glyph, scale * (float)spc->h_oversample, scale * (float)spc->v_oversample, 0,0, &x0,&y0,&x1,&y1); rects[k].w = (nk_rp_coord) (x1-x0 + spc->padding + (int)spc->h_oversample-1); rects[k].h = (nk_rp_coord) (y1-y0 + spc->padding + (int)spc->v_oversample-1); ++k; } } return k; } NK_INTERN int nk_tt_PackFontRangesRenderIntoRects(struct nk_tt_pack_context *spc, struct nk_tt_fontinfo *info, struct nk_tt_pack_range *ranges, int num_ranges, struct nk_rp_rect *rects, struct nk_allocator *alloc) { int i,j,k, return_value = 1; /* save current values */ int old_h_over = (int)spc->h_oversample; int old_v_over = (int)spc->v_oversample; /* rects array must be big enough to accommodate all characters in the given ranges */ k = 0; for (i=0; i < num_ranges; ++i) { float fh = ranges[i].font_size; float recip_h,recip_v,sub_x,sub_y; float scale = fh > 0 ? nk_tt_ScaleForPixelHeight(info, fh): nk_tt_ScaleForMappingEmToPixels(info, -fh); spc->h_oversample = ranges[i].h_oversample; spc->v_oversample = ranges[i].v_oversample; recip_h = 1.0f / (float)spc->h_oversample; recip_v = 1.0f / (float)spc->v_oversample; sub_x = nk_tt__oversample_shift((int)spc->h_oversample); sub_y = nk_tt__oversample_shift((int)spc->v_oversample); for (j=0; j < ranges[i].num_chars; ++j) { struct nk_rp_rect *r = &rects[k]; if (r->was_packed) { struct nk_tt_packedchar *bc = &ranges[i].chardata_for_range[j]; int advance, lsb, x0,y0,x1,y1; int codepoint = ranges[i].first_unicode_codepoint_in_range ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; int glyph = nk_tt_FindGlyphIndex(info, codepoint); nk_rp_coord pad = (nk_rp_coord) spc->padding; /* pad on left and top */ r->x = (nk_rp_coord)((int)r->x + (int)pad); r->y = (nk_rp_coord)((int)r->y + (int)pad); r->w = (nk_rp_coord)((int)r->w - (int)pad); r->h = (nk_rp_coord)((int)r->h - (int)pad); nk_tt_GetGlyphHMetrics(info, glyph, &advance, &lsb); nk_tt_GetGlyphBitmapBox(info, glyph, scale * (float)spc->h_oversample, (scale * (float)spc->v_oversample), &x0,&y0,&x1,&y1); nk_tt_MakeGlyphBitmapSubpixel(info, spc->pixels + r->x + r->y*spc->stride_in_bytes, (int)(r->w - spc->h_oversample+1), (int)(r->h - spc->v_oversample+1), spc->stride_in_bytes, scale * (float)spc->h_oversample, scale * (float)spc->v_oversample, 0,0, glyph, alloc); if (spc->h_oversample > 1) nk_tt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, r->w, r->h, spc->stride_in_bytes, (int)spc->h_oversample); if (spc->v_oversample > 1) nk_tt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, r->w, r->h, spc->stride_in_bytes, (int)spc->v_oversample); bc->x0 = (nk_ushort) r->x; bc->y0 = (nk_ushort) r->y; bc->x1 = (nk_ushort) (r->x + r->w); bc->y1 = (nk_ushort) (r->y + r->h); bc->xadvance = scale * (float)advance; bc->xoff = (float) x0 * recip_h + sub_x; bc->yoff = (float) y0 * recip_v + sub_y; bc->xoff2 = ((float)x0 + r->w) * recip_h + sub_x; bc->yoff2 = ((float)y0 + r->h) * recip_v + sub_y; } else { return_value = 0; /* if any fail, report failure */ } ++k; } } /* restore original values */ spc->h_oversample = (unsigned int)old_h_over; spc->v_oversample = (unsigned int)old_v_over; return return_value; } NK_INTERN void nk_tt_GetPackedQuad(struct nk_tt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, struct nk_tt_aligned_quad *q, int align_to_integer) { float ipw = 1.0f / (float)pw, iph = 1.0f / (float)ph; struct nk_tt_packedchar *b = (struct nk_tt_packedchar*)(chardata + char_index); if (align_to_integer) { int tx = nk_ifloorf((*xpos + b->xoff) + 0.5f); int ty = nk_ifloorf((*ypos + b->yoff) + 0.5f); float x = (float)tx; float y = (float)ty; q->x0 = x; q->y0 = y; q->x1 = x + b->xoff2 - b->xoff; q->y1 = y + b->yoff2 - b->yoff; } else { q->x0 = *xpos + b->xoff; q->y0 = *ypos + b->yoff; q->x1 = *xpos + b->xoff2; q->y1 = *ypos + b->yoff2; } q->s0 = b->x0 * ipw; q->t0 = b->y0 * iph; q->s1 = b->x1 * ipw; q->t1 = b->y1 * iph; *xpos += b->xadvance; } /* ------------------------------------------------------------- * * FONT BAKING * * --------------------------------------------------------------*/ struct nk_font_bake_data { struct nk_tt_fontinfo info; struct nk_rp_rect *rects; struct nk_tt_pack_range *ranges; nk_rune range_count; }; struct nk_font_baker { struct nk_allocator alloc; struct nk_tt_pack_context spc; struct nk_font_bake_data *build; struct nk_tt_packedchar *packed_chars; struct nk_rp_rect *rects; struct nk_tt_pack_range *ranges; }; NK_GLOBAL const nk_size nk_rect_align = NK_ALIGNOF(struct nk_rp_rect); NK_GLOBAL const nk_size nk_range_align = NK_ALIGNOF(struct nk_tt_pack_range); NK_GLOBAL const nk_size nk_char_align = NK_ALIGNOF(struct nk_tt_packedchar); NK_GLOBAL const nk_size nk_build_align = NK_ALIGNOF(struct nk_font_bake_data); NK_GLOBAL const nk_size nk_baker_align = NK_ALIGNOF(struct nk_font_baker); NK_INTERN int nk_range_count(const nk_rune *range) { const nk_rune *iter = range; NK_ASSERT(range); if (!range) return 0; while (*(iter++) != 0); return (iter == range) ? 0 : (int)((iter - range)/2); } NK_INTERN int nk_range_glyph_count(const nk_rune *range, int count) { int i = 0; int total_glyphs = 0; for (i = 0; i < count; ++i) { int diff; nk_rune f = range[(i*2)+0]; nk_rune t = range[(i*2)+1]; NK_ASSERT(t >= f); diff = (int)((t - f) + 1); total_glyphs += diff; } return total_glyphs; } NK_API const nk_rune* nk_font_default_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = {0x0020, 0x00FF, 0}; return ranges; } NK_API const nk_rune* nk_font_chinese_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x3000, 0x30FF, 0x31F0, 0x31FF, 0xFF00, 0xFFEF, 0x4e00, 0x9FAF, 0 }; return ranges; } NK_API const nk_rune* nk_font_cyrillic_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x0400, 0x052F, 0x2DE0, 0x2DFF, 0xA640, 0xA69F, 0 }; return ranges; } NK_API const nk_rune* nk_font_korean_glyph_ranges(void) { NK_STORAGE const nk_rune ranges[] = { 0x0020, 0x00FF, 0x3131, 0x3163, 0xAC00, 0xD79D, 0 }; return ranges; } NK_INTERN void nk_font_baker_memory(nk_size *temp, int *glyph_count, struct nk_font_config *config_list, int count) { int range_count = 0; int total_range_count = 0; struct nk_font_config *iter, *i; NK_ASSERT(config_list); NK_ASSERT(glyph_count); if (!config_list) { *temp = 0; *glyph_count = 0; return; } *glyph_count = 0; for (iter = config_list; iter; iter = iter->next) { i = iter; do {if (!i->range) iter->range = nk_font_default_glyph_ranges(); range_count = nk_range_count(i->range); total_range_count += range_count; *glyph_count += nk_range_glyph_count(i->range, range_count); } while ((i = i->n) != iter); } *temp = (nk_size)*glyph_count * sizeof(struct nk_rp_rect); *temp += (nk_size)total_range_count * sizeof(struct nk_tt_pack_range); *temp += (nk_size)*glyph_count * sizeof(struct nk_tt_packedchar); *temp += (nk_size)count * sizeof(struct nk_font_bake_data); *temp += sizeof(struct nk_font_baker); *temp += nk_rect_align + nk_range_align + nk_char_align; *temp += nk_build_align + nk_baker_align; } NK_INTERN struct nk_font_baker* nk_font_baker(void *memory, int glyph_count, int count, struct nk_allocator *alloc) { struct nk_font_baker *baker; if (!memory) return 0; /* setup baker inside a memory block */ baker = (struct nk_font_baker*)NK_ALIGN_PTR(memory, nk_baker_align); baker->build = (struct nk_font_bake_data*)NK_ALIGN_PTR((baker + 1), nk_build_align); baker->packed_chars = (struct nk_tt_packedchar*)NK_ALIGN_PTR((baker->build + count), nk_char_align); baker->rects = (struct nk_rp_rect*)NK_ALIGN_PTR((baker->packed_chars + glyph_count), nk_rect_align); baker->ranges = (struct nk_tt_pack_range*)NK_ALIGN_PTR((baker->rects + glyph_count), nk_range_align); baker->alloc = *alloc; return baker; } NK_INTERN int nk_font_bake_pack(struct nk_font_baker *baker, nk_size *image_memory, int *width, int *height, struct nk_recti *custom, const struct nk_font_config *config_list, int count, struct nk_allocator *alloc) { NK_STORAGE const nk_size max_height = 1024 * 32; const struct nk_font_config *config_iter, *it; int total_glyph_count = 0; int total_range_count = 0; int range_count = 0; int i = 0; NK_ASSERT(image_memory); NK_ASSERT(width); NK_ASSERT(height); NK_ASSERT(config_list); NK_ASSERT(count); NK_ASSERT(alloc); if (!image_memory || !width || !height || !config_list || !count) return nk_false; for (config_iter = config_list; config_iter; config_iter = config_iter->next) { it = config_iter; do {range_count = nk_range_count(it->range); total_range_count += range_count; total_glyph_count += nk_range_glyph_count(it->range, range_count); } while ((it = it->n) != config_iter); } /* setup font baker from temporary memory */ for (config_iter = config_list; config_iter; config_iter = config_iter->next) { it = config_iter; do {if (!nk_tt_InitFont(&baker->build[i++].info, (const unsigned char*)it->ttf_blob, 0)) return nk_false; } while ((it = it->n) != config_iter); } *height = 0; *width = (total_glyph_count > 1000) ? 1024 : 512; nk_tt_PackBegin(&baker->spc, 0, (int)*width, (int)max_height, 0, 1, alloc); { int input_i = 0; int range_n = 0; int rect_n = 0; int char_n = 0; if (custom) { /* pack custom user data first so it will be in the upper left corner*/ struct nk_rp_rect custom_space; nk_zero(&custom_space, sizeof(custom_space)); custom_space.w = (nk_rp_coord)(custom->w); custom_space.h = (nk_rp_coord)(custom->h); nk_tt_PackSetOversampling(&baker->spc, 1, 1); nk_rp_pack_rects((struct nk_rp_context*)baker->spc.pack_info, &custom_space, 1); *height = NK_MAX(*height, (int)(custom_space.y + custom_space.h)); custom->x = (short)custom_space.x; custom->y = (short)custom_space.y; custom->w = (short)custom_space.w; custom->h = (short)custom_space.h; } /* first font pass: pack all glyphs */ for (input_i = 0, config_iter = config_list; input_i < count && config_iter; config_iter = config_iter->next) { it = config_iter; do {int n = 0; int glyph_count; const nk_rune *in_range; const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; /* count glyphs + ranges in current font */ glyph_count = 0; range_count = 0; for (in_range = cfg->range; in_range[0] && in_range[1]; in_range += 2) { glyph_count += (int)(in_range[1] - in_range[0]) + 1; range_count++; } /* setup ranges */ tmp->ranges = baker->ranges + range_n; tmp->range_count = (nk_rune)range_count; range_n += range_count; for (i = 0; i < range_count; ++i) { in_range = &cfg->range[i * 2]; tmp->ranges[i].font_size = cfg->size; tmp->ranges[i].first_unicode_codepoint_in_range = (int)in_range[0]; tmp->ranges[i].num_chars = (int)(in_range[1]- in_range[0]) + 1; tmp->ranges[i].chardata_for_range = baker->packed_chars + char_n; char_n += tmp->ranges[i].num_chars; } /* pack */ tmp->rects = baker->rects + rect_n; rect_n += glyph_count; nk_tt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v); n = nk_tt_PackFontRangesGatherRects(&baker->spc, &tmp->info, tmp->ranges, (int)tmp->range_count, tmp->rects); nk_rp_pack_rects((struct nk_rp_context*)baker->spc.pack_info, tmp->rects, (int)n); /* texture height */ for (i = 0; i < n; ++i) { if (tmp->rects[i].was_packed) *height = NK_MAX(*height, tmp->rects[i].y + tmp->rects[i].h); } } while ((it = it->n) != config_iter); } NK_ASSERT(rect_n == total_glyph_count); NK_ASSERT(char_n == total_glyph_count); NK_ASSERT(range_n == total_range_count); } *height = (int)nk_round_up_pow2((nk_uint)*height); *image_memory = (nk_size)(*width) * (nk_size)(*height); return nk_true; } NK_INTERN void nk_font_bake(struct nk_font_baker *baker, void *image_memory, int width, int height, struct nk_font_glyph *glyphs, int glyphs_count, const struct nk_font_config *config_list, int font_count) { int input_i = 0; nk_rune glyph_n = 0; const struct nk_font_config *config_iter; const struct nk_font_config *it; NK_ASSERT(image_memory); NK_ASSERT(width); NK_ASSERT(height); NK_ASSERT(config_list); NK_ASSERT(baker); NK_ASSERT(font_count); NK_ASSERT(glyphs_count); if (!image_memory || !width || !height || !config_list || !font_count || !glyphs || !glyphs_count) return; /* second font pass: render glyphs */ nk_zero(image_memory, (nk_size)((nk_size)width * (nk_size)height)); baker->spc.pixels = (unsigned char*)image_memory; baker->spc.height = (int)height; for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter; config_iter = config_iter->next) { it = config_iter; do {const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; nk_tt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v); nk_tt_PackFontRangesRenderIntoRects(&baker->spc, &tmp->info, tmp->ranges, (int)tmp->range_count, tmp->rects, &baker->alloc); } while ((it = it->n) != config_iter); } nk_tt_PackEnd(&baker->spc, &baker->alloc); /* third pass: setup font and glyphs */ for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter; config_iter = config_iter->next) { it = config_iter; do {nk_size i = 0; int char_idx = 0; nk_rune glyph_count = 0; const struct nk_font_config *cfg = it; struct nk_font_bake_data *tmp = &baker->build[input_i++]; struct nk_baked_font *dst_font = cfg->font; float font_scale = nk_tt_ScaleForPixelHeight(&tmp->info, cfg->size); int unscaled_ascent, unscaled_descent, unscaled_line_gap; nk_tt_GetFontVMetrics(&tmp->info, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap); /* fill baked font */ if (!cfg->merge_mode) { dst_font->ranges = cfg->range; dst_font->height = cfg->size; dst_font->ascent = ((float)unscaled_ascent * font_scale); dst_font->descent = ((float)unscaled_descent * font_scale); dst_font->glyph_offset = glyph_n; // Need to zero this, or it will carry over from a previous // bake, and cause a segfault when accessing glyphs[]. dst_font->glyph_count = 0; } /* fill own baked font glyph array */ for (i = 0; i < tmp->range_count; ++i) { struct nk_tt_pack_range *range = &tmp->ranges[i]; for (char_idx = 0; char_idx < range->num_chars; char_idx++) { nk_rune codepoint = 0; float dummy_x = 0, dummy_y = 0; struct nk_tt_aligned_quad q; struct nk_font_glyph *glyph; /* query glyph bounds from stb_truetype */ const struct nk_tt_packedchar *pc = &range->chardata_for_range[char_idx]; if (!pc->x0 && !pc->x1 && !pc->y0 && !pc->y1) continue; codepoint = (nk_rune)(range->first_unicode_codepoint_in_range + char_idx); nk_tt_GetPackedQuad(range->chardata_for_range, (int)width, (int)height, char_idx, &dummy_x, &dummy_y, &q, 0); /* fill own glyph type with data */ glyph = &glyphs[dst_font->glyph_offset + dst_font->glyph_count + (unsigned int)glyph_count]; glyph->codepoint = codepoint; glyph->x0 = q.x0; glyph->y0 = q.y0; glyph->x1 = q.x1; glyph->y1 = q.y1; glyph->y0 += (dst_font->ascent + 0.5f); glyph->y1 += (dst_font->ascent + 0.5f); glyph->w = glyph->x1 - glyph->x0 + 0.5f; glyph->h = glyph->y1 - glyph->y0; if (cfg->coord_type == NK_COORD_PIXEL) { glyph->u0 = q.s0 * (float)width; glyph->v0 = q.t0 * (float)height; glyph->u1 = q.s1 * (float)width; glyph->v1 = q.t1 * (float)height; } else { glyph->u0 = q.s0; glyph->v0 = q.t0; glyph->u1 = q.s1; glyph->v1 = q.t1; } glyph->xadvance = (pc->xadvance + cfg->spacing.x); if (cfg->pixel_snap) glyph->xadvance = (float)(int)(glyph->xadvance + 0.5f); glyph_count++; } } dst_font->glyph_count += glyph_count; glyph_n += glyph_count; } while ((it = it->n) != config_iter); } } NK_INTERN void nk_font_bake_custom_data(void *img_memory, int img_width, int img_height, struct nk_recti img_dst, const char *texture_data_mask, int tex_width, int tex_height, char white, char black) { nk_byte *pixels; int y = 0; int x = 0; int n = 0; NK_ASSERT(img_memory); NK_ASSERT(img_width); NK_ASSERT(img_height); NK_ASSERT(texture_data_mask); NK_UNUSED(tex_height); if (!img_memory || !img_width || !img_height || !texture_data_mask) return; pixels = (nk_byte*)img_memory; for (y = 0, n = 0; y < tex_height; ++y) { for (x = 0; x < tex_width; ++x, ++n) { const int off0 = ((img_dst.x + x) + (img_dst.y + y) * img_width); const int off1 = off0 + 1 + tex_width; pixels[off0] = (texture_data_mask[n] == white) ? 0xFF : 0x00; pixels[off1] = (texture_data_mask[n] == black) ? 0xFF : 0x00; } } } NK_INTERN void nk_font_bake_convert(void *out_memory, int img_width, int img_height, const void *in_memory) { int n = 0; nk_rune *dst; const nk_byte *src; NK_ASSERT(out_memory); NK_ASSERT(in_memory); NK_ASSERT(img_width); NK_ASSERT(img_height); if (!out_memory || !in_memory || !img_height || !img_width) return; dst = (nk_rune*)out_memory; src = (const nk_byte*)in_memory; for (n = (int)(img_width * img_height); n > 0; n--) *dst++ = ((nk_rune)(*src++) << 24) | 0x00FFFFFF; } /* ------------------------------------------------------------- * * FONT * * --------------------------------------------------------------*/ NK_INTERN float nk_font_text_width(nk_handle handle, float height, const char *text, int len) { nk_rune unicode; int text_len = 0; float text_width = 0; int glyph_len = 0; float scale = 0; struct nk_font *font = (struct nk_font*)handle.ptr; NK_ASSERT(font); NK_ASSERT(font->glyphs); if (!font || !text || !len) return 0; scale = height/font->info.height; glyph_len = text_len = nk_utf_decode(text, &unicode, (int)len); if (!glyph_len) return 0; while (text_len <= (int)len && glyph_len) { const struct nk_font_glyph *g; if (unicode == NK_UTF_INVALID) break; /* query currently drawn glyph information */ g = nk_font_find_glyph(font, unicode); text_width += g->xadvance * scale; /* offset next glyph */ glyph_len = nk_utf_decode(text + text_len, &unicode, (int)len - text_len); text_len += glyph_len; } return text_width; } #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT NK_INTERN void nk_font_query_font_glyph(nk_handle handle, float height, struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint) { float scale; const struct nk_font_glyph *g; struct nk_font *font; NK_ASSERT(glyph); NK_UNUSED(next_codepoint); font = (struct nk_font*)handle.ptr; NK_ASSERT(font); NK_ASSERT(font->glyphs); if (!font || !glyph) return; scale = height/font->info.height; g = nk_font_find_glyph(font, codepoint); glyph->width = (g->x1 - g->x0) * scale; glyph->height = (g->y1 - g->y0) * scale; glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale); glyph->xadvance = (g->xadvance * scale); glyph->uv[0] = nk_vec2(g->u0, g->v0); glyph->uv[1] = nk_vec2(g->u1, g->v1); } #endif NK_API const struct nk_font_glyph* nk_font_find_glyph(struct nk_font *font, nk_rune unicode) { int i = 0; int count; int total_glyphs = 0; const struct nk_font_glyph *glyph = 0; const struct nk_font_config *iter = 0; NK_ASSERT(font); NK_ASSERT(font->glyphs); NK_ASSERT(font->info.ranges); if (!font || !font->glyphs) return 0; glyph = font->fallback; iter = font->config; do {count = nk_range_count(iter->range); for (i = 0; i < count; ++i) { nk_rune f = iter->range[(i*2)+0]; nk_rune t = iter->range[(i*2)+1]; int diff = (int)((t - f) + 1); if (unicode >= f && unicode <= t) return &font->glyphs[((nk_rune)total_glyphs + (unicode - f))]; total_glyphs += diff; } } while ((iter = iter->n) != font->config); return glyph; } NK_INTERN void nk_font_init(struct nk_font *font, float pixel_height, nk_rune fallback_codepoint, struct nk_font_glyph *glyphs, const struct nk_baked_font *baked_font, nk_handle atlas) { struct nk_baked_font baked; NK_ASSERT(font); NK_ASSERT(glyphs); NK_ASSERT(baked_font); if (!font || !glyphs || !baked_font) return; baked = *baked_font; font->fallback = 0; font->info = baked; font->scale = (float)pixel_height / (float)font->info.height; font->glyphs = &glyphs[baked_font->glyph_offset]; font->texture = atlas; font->fallback_codepoint = fallback_codepoint; font->fallback = nk_font_find_glyph(font, fallback_codepoint); font->handle.height = font->info.height * font->scale; font->handle.width = nk_font_text_width; font->handle.userdata.ptr = font; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT font->handle.query = nk_font_query_font_glyph; font->handle.texture = font->texture; #endif } /* --------------------------------------------------------------------------- * * DEFAULT FONT * * ProggyClean.ttf * Copyright (c) 2004, 2005 Tristan Grimmer * MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip) * Download and more information at http://upperbounds.net *-----------------------------------------------------------------------------*/ #ifdef __clang__ #pragma clang diagnostic push #pragma clang diagnostic ignored "-Woverlength-strings" #elif defined(__GNUC__) || defined(__GNUG__) #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Woverlength-strings" #endif #ifdef NK_INCLUDE_DEFAULT_FONT NK_GLOBAL const char nk_proggy_clean_ttf_compressed_data_base85[11980+1] = "7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/" "2*>]b(MC;$jPfY.;h^`IWM9Qo#t'X#(v#Y9w0#1D$CIf;W'#pWUPXOuxXuU(H9M(1=Ke$$'5F%)]0^#0X@U.a$FBjVQTSDgEKnIS7EM9>ZY9w0#L;>>#Mx&4Mvt//L[MkA#W@lK.N'[0#7RL_&#w+F%HtG9M#XL`N&.,GM4Pg;--VsM.M0rJfLH2eTM`*oJMHRC`N" "kfimM2J,W-jXS:)r0wK#@Fge$U>`w'N7G#$#fB#$E^$#:9:hk+eOe--6x)F7*E%?76%^GMHePW-Z5l'&GiF#$956:rS?dA#fiK:)Yr+`�j@'DbG&#^$PG.Ll+DNa&VZ>1i%h1S9u5o@YaaW$e+bROPOpxTO7Stwi1::iB1q)C_=dV26J;2,]7op$]uQr@_V7$q^%lQwtuHY]=DX,n3L#0PHDO4f9>dC@O>HBuKPpP*E,N+b3L#lpR/MrTEH.IAQk.a>D[.e;mc." 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"URQ##V^Fv-XFbGM7Fl(N<3DhLGF%q.1rC$#:T__&Pi68%0xi_&[qFJ(77j_&JWoF.V735&T,[R*:xFR*K5>>#`bW-?4Ne_&6Ne_&6Ne_&n`kr-#GJcM6X;uM6X;uM(.a..^2TkL%oR(#" ";u.T%fAr%4tJ8&><1=GHZ_+m9/#H1F^R#SC#*N=BA9(D?v[UiFY>>^8p,KKF.W]L29uLkLlu/+4T" "w$)F./^n3+rlo+DB;5sIYGNk+i1t-69Jg--0pao7Sm#K)pdHW&;LuDNH@H>#/X-TI(;P>#,Gc>#0Su>#4`1?#8lC?#xL$#B.`$#F:r$#JF.%#NR@%#R_R%#Vke%#Zww%#_-4^Rh%Sflr-k'MS.o?.5/sWel/wpEM0%3'/1)K^f1-d>G21&v(35>V`39V7A4=onx4" "A1OY5EI0;6Ibgr6M$HS7Q<)58C5w,;WoA*#[%T*#`1g*#d=#+#hI5+#lUG+#pbY+#tnl+#x$),#&1;,#*=M,#.I`,#2Ur,#6b.-#;w[H#iQtA#m^0B#qjBB#uvTB##-hB#'9$C#+E6C#" "/QHC#3^ZC#7jmC#;v)D#?,)4kMYD4lVu`4m`:&5niUA5@(A5BA1]PBB:xlBCC=2CDLXMCEUtiCf&0g2'tN?PGT4CPGT4CPGT4CPGT4CPGT4CPGT4CPGT4CP" "GT4CPGT4CPGT4CPGT4CPGT4CPGT4CP-qekC`.9kEg^+F$kwViFJTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5o,^<-28ZI'O?;xp" "O?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xp;7q-#lLYI:xvD=#"; #endif /* NK_INCLUDE_DEFAULT_FONT */ #define NK_CURSOR_DATA_W 90 #define NK_CURSOR_DATA_H 27 NK_GLOBAL const char nk_custom_cursor_data[NK_CURSOR_DATA_W * NK_CURSOR_DATA_H + 1] = { "..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX" "..- -X.....X- X.X - X.X -X.....X - X.....X" "--- -XXX.XXX- X...X - X...X -X....X - X....X" "X - X.X - X.....X - X.....X -X...X - X...X" "XX - X.X -X.......X- X.......X -X..X.X - X.X..X" "X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X" "X..X - X.X - X.X - X.X -XX X.X - X.X XX" "X...X - X.X - X.X - XX X.X XX - X.X - X.X " "X....X - X.X - X.X - X.X X.X X.X - X.X - X.X " "X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X " "X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X " "X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X " "X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X " "X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X " "X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X " "X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X " "X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX " "X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------" "X.X X..X - -X.......X- X.......X - XX XX - " "XX X..X - - X.....X - X.....X - X.X X.X - " " X..X - X...X - X...X - X..X X..X - " " XX - X.X - X.X - X...XXXXXXXXXXXXX...X - " "------------ - X - X -X.....................X- " " ----------------------------------- X...XXXXXXXXXXXXX...X - " " - X..X X..X - " " - X.X X.X - " " - XX XX - " }; #ifdef __clang__ #pragma clang diagnostic pop #elif defined(__GNUC__) || defined(__GNUG__) #pragma GCC diagnostic pop #endif NK_GLOBAL unsigned char *nk__barrier; NK_GLOBAL unsigned char *nk__barrier2; NK_GLOBAL unsigned char *nk__barrier3; NK_GLOBAL unsigned char *nk__barrier4; NK_GLOBAL unsigned char *nk__dout; NK_INTERN unsigned int nk_decompress_length(unsigned char *input) { return (unsigned int)((input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11]); } NK_INTERN void nk__match(unsigned char *data, unsigned int length) { /* INVERSE of memmove... write each byte before copying the next...*/ NK_ASSERT (nk__dout + length <= nk__barrier); if (nk__dout + length > nk__barrier) { nk__dout += length; return; } if (data < nk__barrier4) { nk__dout = nk__barrier+1; return; } while (length--) *nk__dout++ = *data++; } NK_INTERN void nk__lit(unsigned char *data, unsigned int length) { NK_ASSERT (nk__dout + length <= nk__barrier); if (nk__dout + length > nk__barrier) { nk__dout += length; return; } if (data < nk__barrier2) { nk__dout = nk__barrier+1; return; } NK_MEMCPY(nk__dout, data, length); nk__dout += length; } NK_INTERN unsigned char* nk_decompress_token(unsigned char *i) { #define nk__in2(x) ((i[x] << 8) + i[(x)+1]) #define nk__in3(x) ((i[x] << 16) + nk__in2((x)+1)) #define nk__in4(x) ((i[x] << 24) + nk__in3((x)+1)) if (*i >= 0x20) { /* use fewer if's for cases that expand small */ if (*i >= 0x80) nk__match(nk__dout-i[1]-1, (unsigned int)i[0] - 0x80 + 1), i += 2; else if (*i >= 0x40) nk__match(nk__dout-(nk__in2(0) - 0x4000 + 1), (unsigned int)i[2]+1), i += 3; else /* *i >= 0x20 */ nk__lit(i+1, (unsigned int)i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1); } else { /* more ifs for cases that expand large, since overhead is amortized */ if (*i >= 0x18) nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x180000 + 1), (unsigned int)i[3]+1), i += 4; else if (*i >= 0x10) nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x100000 + 1), (unsigned int)nk__in2(3)+1), i += 5; else if (*i >= 0x08) nk__lit(i+2, (unsigned int)nk__in2(0) - 0x0800 + 1), i += 2 + (nk__in2(0) - 0x0800 + 1); else if (*i == 0x07) nk__lit(i+3, (unsigned int)nk__in2(1) + 1), i += 3 + (nk__in2(1) + 1); else if (*i == 0x06) nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), i[4]+1u), i += 5; else if (*i == 0x04) nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), (unsigned int)nk__in2(4)+1u), i += 6; } return i; } NK_INTERN unsigned int nk_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen) { const unsigned long ADLER_MOD = 65521; unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; unsigned long blocklen, i; blocklen = buflen % 5552; while (buflen) { for (i=0; i + 7 < blocklen; i += 8) { s1 += buffer[0]; s2 += s1; s1 += buffer[1]; s2 += s1; s1 += buffer[2]; s2 += s1; s1 += buffer[3]; s2 += s1; s1 += buffer[4]; s2 += s1; s1 += buffer[5]; s2 += s1; s1 += buffer[6]; s2 += s1; s1 += buffer[7]; s2 += s1; buffer += 8; } for (; i < blocklen; ++i) { s1 += *buffer++; s2 += s1; } s1 %= ADLER_MOD; s2 %= ADLER_MOD; buflen -= (unsigned int)blocklen; blocklen = 5552; } return (unsigned int)(s2 << 16) + (unsigned int)s1; } NK_INTERN unsigned int nk_decompress(unsigned char *output, unsigned char *i, unsigned int length) { unsigned int olen; if (nk__in4(0) != 0x57bC0000) return 0; if (nk__in4(4) != 0) return 0; /* error! stream is > 4GB */ olen = nk_decompress_length(i); nk__barrier2 = i; nk__barrier3 = i+length; nk__barrier = output + olen; nk__barrier4 = output; i += 16; nk__dout = output; for (;;) { unsigned char *old_i = i; i = nk_decompress_token(i); if (i == old_i) { if (*i == 0x05 && i[1] == 0xfa) { NK_ASSERT(nk__dout == output + olen); if (nk__dout != output + olen) return 0; if (nk_adler32(1, output, olen) != (unsigned int) nk__in4(2)) return 0; return olen; } else { NK_ASSERT(0); /* NOTREACHED */ return 0; } } NK_ASSERT(nk__dout <= output + olen); if (nk__dout > output + olen) return 0; } } NK_INTERN unsigned int nk_decode_85_byte(char c) { return (unsigned int)((c >= '\\') ? c-36 : c-35); } NK_INTERN void nk_decode_85(unsigned char* dst, const unsigned char* src) { while (*src) { unsigned int tmp = nk_decode_85_byte((char)src[0]) + 85 * (nk_decode_85_byte((char)src[1]) + 85 * (nk_decode_85_byte((char)src[2]) + 85 * (nk_decode_85_byte((char)src[3]) + 85 * nk_decode_85_byte((char)src[4])))); /* we can't assume little-endianess. */ dst[0] = (unsigned char)((tmp >> 0) & 0xFF); dst[1] = (unsigned char)((tmp >> 8) & 0xFF); dst[2] = (unsigned char)((tmp >> 16) & 0xFF); dst[3] = (unsigned char)((tmp >> 24) & 0xFF); src += 5; dst += 4; } } /* ------------------------------------------------------------- * * FONT ATLAS * * --------------------------------------------------------------*/ NK_API struct nk_font_config nk_font_config(float pixel_height) { struct nk_font_config cfg; nk_zero_struct(cfg); cfg.ttf_blob = 0; cfg.ttf_size = 0; cfg.ttf_data_owned_by_atlas = 0; cfg.size = pixel_height; cfg.oversample_h = 3; cfg.oversample_v = 1; cfg.pixel_snap = 0; cfg.coord_type = NK_COORD_UV; cfg.spacing = nk_vec2(0,0); cfg.range = nk_font_default_glyph_ranges(); cfg.merge_mode = 0; cfg.fallback_glyph = '?'; cfg.font = 0; cfg.n = 0; return cfg; } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_font_atlas_init_default(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); if (!atlas) return; nk_zero_struct(*atlas); atlas->temporary.userdata.ptr = 0; atlas->temporary.alloc = nk_malloc; atlas->temporary.free = nk_mfree; atlas->permanent.userdata.ptr = 0; atlas->permanent.alloc = nk_malloc; atlas->permanent.free = nk_mfree; } #endif NK_API void nk_font_atlas_init(struct nk_font_atlas *atlas, struct nk_allocator *alloc) { NK_ASSERT(atlas); NK_ASSERT(alloc); if (!atlas || !alloc) return; nk_zero_struct(*atlas); atlas->permanent = *alloc; atlas->temporary = *alloc; } NK_API void nk_font_atlas_init_custom(struct nk_font_atlas *atlas, struct nk_allocator *permanent, struct nk_allocator *temporary) { NK_ASSERT(atlas); NK_ASSERT(permanent); NK_ASSERT(temporary); if (!atlas || !permanent || !temporary) return; nk_zero_struct(*atlas); atlas->permanent = *permanent; atlas->temporary = *temporary; } NK_API void nk_font_atlas_begin(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc && atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc && atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free || !atlas->temporary.alloc || !atlas->temporary.free) return; if (atlas->glyphs) { atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); atlas->glyphs = 0; } if (atlas->pixel) { atlas->permanent.free(atlas->permanent.userdata, atlas->pixel); atlas->pixel = 0; } } NK_API struct nk_font* nk_font_atlas_add(struct nk_font_atlas *atlas, const struct nk_font_config *config) { struct nk_font *font = 0; struct nk_font_config *cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(config); NK_ASSERT(config->ttf_blob); NK_ASSERT(config->ttf_size); NK_ASSERT(config->size > 0.0f); if (!atlas || !config || !config->ttf_blob || !config->ttf_size || config->size <= 0.0f|| !atlas->permanent.alloc || !atlas->permanent.free || !atlas->temporary.alloc || !atlas->temporary.free) return 0; /* allocate font config */ cfg = (struct nk_font_config*) atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font_config)); NK_MEMCPY(cfg, config, sizeof(*config)); cfg->n = cfg; cfg->p = cfg; if (!config->merge_mode) { /* insert font config into list */ if (!atlas->config) { atlas->config = cfg; cfg->next = 0; } else { struct nk_font_config *i = atlas->config; while (i->next) i = i->next; i->next = cfg; cfg->next = 0; } /* allocate new font */ font = (struct nk_font*) atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font)); NK_ASSERT(font); nk_zero(font, sizeof(*font)); if (!font) return 0; font->config = cfg; /* insert font into list */ if (!atlas->fonts) { atlas->fonts = font; font->next = 0; } else { struct nk_font *i = atlas->fonts; while (i->next) i = i->next; i->next = font; font->next = 0; } cfg->font = &font->info; } else { /* extend previously added font */ struct nk_font *f = 0; struct nk_font_config *c = 0; NK_ASSERT(atlas->font_num); f = atlas->fonts; c = f->config; cfg->font = &f->info; cfg->n = c; cfg->p = c->p; c->p->n = cfg; c->p = cfg; } /* create own copy of .TTF font blob */ if (!config->ttf_data_owned_by_atlas) { cfg->ttf_blob = atlas->permanent.alloc(atlas->permanent.userdata,0, cfg->ttf_size); NK_ASSERT(cfg->ttf_blob); if (!cfg->ttf_blob) { atlas->font_num++; return 0; } NK_MEMCPY(cfg->ttf_blob, config->ttf_blob, cfg->ttf_size); cfg->ttf_data_owned_by_atlas = 1; } atlas->font_num++; return font; } NK_API struct nk_font* nk_font_atlas_add_from_memory(struct nk_font_atlas *atlas, void *memory, nk_size size, float height, const struct nk_font_config *config) { struct nk_font_config cfg; NK_ASSERT(memory); NK_ASSERT(size); NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->temporary.alloc || !atlas->temporary.free || !memory || !size || !atlas->permanent.alloc || !atlas->permanent.free) return 0; cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = memory; cfg.ttf_size = size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 0; return nk_font_atlas_add(atlas, &cfg); } #ifdef NK_INCLUDE_STANDARD_IO NK_API struct nk_font* nk_font_atlas_add_from_file(struct nk_font_atlas *atlas, const char *file_path, float height, const struct nk_font_config *config) { nk_size size; char *memory; struct nk_font_config cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !file_path) return 0; memory = nk_file_load(file_path, &size, &atlas->permanent); if (!memory) return 0; cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = memory; cfg.ttf_size = size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 1; return nk_font_atlas_add(atlas, &cfg); } #endif NK_API struct nk_font* nk_font_atlas_add_compressed(struct nk_font_atlas *atlas, void *compressed_data, nk_size compressed_size, float height, const struct nk_font_config *config) { unsigned int decompressed_size; void *decompressed_data; struct nk_font_config cfg; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(compressed_data); NK_ASSERT(compressed_size); if (!atlas || !compressed_data || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; decompressed_size = nk_decompress_length((unsigned char*)compressed_data); decompressed_data = atlas->permanent.alloc(atlas->permanent.userdata,0,decompressed_size); NK_ASSERT(decompressed_data); if (!decompressed_data) return 0; nk_decompress((unsigned char*)decompressed_data, (unsigned char*)compressed_data, (unsigned int)compressed_size); cfg = (config) ? *config: nk_font_config(height); cfg.ttf_blob = decompressed_data; cfg.ttf_size = decompressed_size; cfg.size = height; cfg.ttf_data_owned_by_atlas = 1; return nk_font_atlas_add(atlas, &cfg); } NK_API struct nk_font* nk_font_atlas_add_compressed_base85(struct nk_font_atlas *atlas, const char *data_base85, float height, const struct nk_font_config *config) { int compressed_size; void *compressed_data; struct nk_font *font; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(data_base85); if (!atlas || !data_base85 || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; compressed_size = (((int)nk_strlen(data_base85) + 4) / 5) * 4; compressed_data = atlas->temporary.alloc(atlas->temporary.userdata,0, (nk_size)compressed_size); NK_ASSERT(compressed_data); if (!compressed_data) return 0; nk_decode_85((unsigned char*)compressed_data, (const unsigned char*)data_base85); font = nk_font_atlas_add_compressed(atlas, compressed_data, (nk_size)compressed_size, height, config); atlas->temporary.free(atlas->temporary.userdata, compressed_data); return font; } #ifdef NK_INCLUDE_DEFAULT_FONT NK_API struct nk_font* nk_font_atlas_add_default(struct nk_font_atlas *atlas, float pixel_height, const struct nk_font_config *config) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); return nk_font_atlas_add_compressed_base85(atlas, nk_proggy_clean_ttf_compressed_data_base85, pixel_height, config); } #endif NK_API const void* nk_font_atlas_bake(struct nk_font_atlas *atlas, int *width, int *height, enum nk_font_atlas_format fmt) { int i = 0; void *tmp = 0; nk_size tmp_size, img_size; struct nk_font *font_iter; struct nk_font_baker *baker; NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); NK_ASSERT(width); NK_ASSERT(height); if (!atlas || !width || !height || !atlas->temporary.alloc || !atlas->temporary.free || !atlas->permanent.alloc || !atlas->permanent.free) return 0; #ifdef NK_INCLUDE_DEFAULT_FONT /* no font added so just use default font */ if (!atlas->font_num) atlas->default_font = nk_font_atlas_add_default(atlas, 13.0f, 0); #endif NK_ASSERT(atlas->font_num); if (!atlas->font_num) return 0; /* allocate temporary baker memory required for the baking process */ nk_font_baker_memory(&tmp_size, &atlas->glyph_count, atlas->config, atlas->font_num); tmp = atlas->temporary.alloc(atlas->temporary.userdata,0, tmp_size); NK_ASSERT(tmp); if (!tmp) goto failed; /* allocate glyph memory for all fonts */ baker = nk_font_baker(tmp, atlas->glyph_count, atlas->font_num, &atlas->temporary); atlas->glyphs = (struct nk_font_glyph*)atlas->permanent.alloc( atlas->permanent.userdata,0, sizeof(struct nk_font_glyph)*(nk_size)atlas->glyph_count); NK_ASSERT(atlas->glyphs); if (!atlas->glyphs) goto failed; /* pack all glyphs into a tight fit space */ atlas->custom.w = (NK_CURSOR_DATA_W*2)+1; atlas->custom.h = NK_CURSOR_DATA_H + 1; if (!nk_font_bake_pack(baker, &img_size, width, height, &atlas->custom, atlas->config, atlas->font_num, &atlas->temporary)) goto failed; /* allocate memory for the baked image font atlas */ atlas->pixel = atlas->temporary.alloc(atlas->temporary.userdata,0, img_size); NK_ASSERT(atlas->pixel); if (!atlas->pixel) goto failed; /* bake glyphs and custom white pixel into image */ nk_font_bake(baker, atlas->pixel, *width, *height, atlas->glyphs, atlas->glyph_count, atlas->config, atlas->font_num); nk_font_bake_custom_data(atlas->pixel, *width, *height, atlas->custom, nk_custom_cursor_data, NK_CURSOR_DATA_W, NK_CURSOR_DATA_H, '.', 'X'); if (fmt == NK_FONT_ATLAS_RGBA32) { /* convert alpha8 image into rgba32 image */ void *img_rgba = atlas->temporary.alloc(atlas->temporary.userdata,0, (nk_size)(*width * *height * 4)); NK_ASSERT(img_rgba); if (!img_rgba) goto failed; nk_font_bake_convert(img_rgba, *width, *height, atlas->pixel); atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = img_rgba; } atlas->tex_width = *width; atlas->tex_height = *height; /* initialize each font */ for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) { struct nk_font *font = font_iter; struct nk_font_config *config = font->config; nk_font_init(font, config->size, config->fallback_glyph, atlas->glyphs, config->font, nk_handle_ptr(0)); } /* initialize each cursor */ {NK_STORAGE const struct nk_vec2 nk_cursor_data[NK_CURSOR_COUNT][3] = { /* Pos Size Offset */ {{ 0, 3}, {12,19}, { 0, 0}}, {{13, 0}, { 7,16}, { 4, 8}}, {{31, 0}, {23,23}, {11,11}}, {{21, 0}, { 9, 23}, { 5,11}}, {{55,18}, {23, 9}, {11, 5}}, {{73, 0}, {17,17}, { 9, 9}}, {{55, 0}, {17,17}, { 9, 9}} }; for (i = 0; i < NK_CURSOR_COUNT; ++i) { struct nk_cursor *cursor = &atlas->cursors[i]; cursor->img.w = (unsigned short)*width; cursor->img.h = (unsigned short)*height; cursor->img.region[0] = (unsigned short)(atlas->custom.x + nk_cursor_data[i][0].x); cursor->img.region[1] = (unsigned short)(atlas->custom.y + nk_cursor_data[i][0].y); cursor->img.region[2] = (unsigned short)nk_cursor_data[i][1].x; cursor->img.region[3] = (unsigned short)nk_cursor_data[i][1].y; cursor->size = nk_cursor_data[i][1]; cursor->offset = nk_cursor_data[i][2]; }} /* free temporary memory */ atlas->temporary.free(atlas->temporary.userdata, tmp); return atlas->pixel; failed: /* error so cleanup all memory */ if (tmp) atlas->temporary.free(atlas->temporary.userdata, tmp); if (atlas->glyphs) { atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); atlas->glyphs = 0; } if (atlas->pixel) { atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = 0; } return 0; } NK_API void nk_font_atlas_end(struct nk_font_atlas *atlas, nk_handle texture, struct nk_draw_null_texture *null) { int i = 0; struct nk_font *font_iter; NK_ASSERT(atlas); if (!atlas) { if (!null) return; null->texture = texture; null->uv = nk_vec2(0.5f,0.5f); } if (null) { null->texture = texture; null->uv.x = (atlas->custom.x + 0.5f)/(float)atlas->tex_width; null->uv.y = (atlas->custom.y + 0.5f)/(float)atlas->tex_height; } for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) { font_iter->texture = texture; #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT font_iter->handle.texture = texture; #endif } for (i = 0; i < NK_CURSOR_COUNT; ++i) atlas->cursors[i].img.handle = texture; atlas->temporary.free(atlas->temporary.userdata, atlas->pixel); atlas->pixel = 0; atlas->tex_width = 0; atlas->tex_height = 0; atlas->custom.x = 0; atlas->custom.y = 0; atlas->custom.w = 0; atlas->custom.h = 0; } NK_API void nk_font_atlas_cleanup(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return; if (atlas->config) { struct nk_font_config *iter; for (iter = atlas->config; iter; iter = iter->next) { struct nk_font_config *i; for (i = iter->n; i != iter; i = i->n) { atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob); i->ttf_blob = 0; } atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob); iter->ttf_blob = 0; } } } NK_API void nk_font_atlas_clear(struct nk_font_atlas *atlas) { NK_ASSERT(atlas); NK_ASSERT(atlas->temporary.alloc); NK_ASSERT(atlas->temporary.free); NK_ASSERT(atlas->permanent.alloc); NK_ASSERT(atlas->permanent.free); if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return; if (atlas->config) { struct nk_font_config *iter, *next; for (iter = atlas->config; iter; iter = next) { struct nk_font_config *i, *n; for (i = iter->n; i != iter; i = n) { n = i->n; if (i->ttf_blob) atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob); atlas->permanent.free(atlas->permanent.userdata, i); } next = iter->next; if (i->ttf_blob) atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob); atlas->permanent.free(atlas->permanent.userdata, iter); } atlas->config = 0; } if (atlas->fonts) { struct nk_font *iter, *next; for (iter = atlas->fonts; iter; iter = next) { next = iter->next; atlas->permanent.free(atlas->permanent.userdata, iter); } atlas->fonts = 0; } if (atlas->glyphs) atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs); nk_zero_struct(*atlas); } #endif ================================================ FILE: src/nuklear_group.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * GROUP * * ===============================================================*/ NK_API int nk_group_scrolled_offset_begin(struct nk_context *ctx, nk_uint *x_offset, nk_uint *y_offset, const char *title, nk_flags flags) { struct nk_rect bounds; struct nk_window panel; struct nk_window *win; win = ctx->current; nk_panel_alloc_space(&bounds, ctx); {const struct nk_rect *c = &win->layout->clip; if (!NK_INTERSECT(c->x, c->y, c->w, c->h, bounds.x, bounds.y, bounds.w, bounds.h) && !(flags & NK_WINDOW_MOVABLE)) { return 0; }} if (win->flags & NK_WINDOW_ROM) flags |= NK_WINDOW_ROM; /* initialize a fake window to create the panel from */ nk_zero(&panel, sizeof(panel)); panel.bounds = bounds; panel.flags = flags; panel.scrollbar.x = *x_offset; panel.scrollbar.y = *y_offset; panel.buffer = win->buffer; panel.layout = (struct nk_panel*)nk_create_panel(ctx); ctx->current = &panel; nk_panel_begin(ctx, (flags & NK_WINDOW_TITLE) ? title: 0, NK_PANEL_GROUP); win->buffer = panel.buffer; win->buffer.clip = panel.layout->clip; panel.layout->offset_x = x_offset; panel.layout->offset_y = y_offset; panel.layout->parent = win->layout; win->layout = panel.layout; ctx->current = win; if ((panel.layout->flags & NK_WINDOW_CLOSED) || (panel.layout->flags & NK_WINDOW_MINIMIZED)) { nk_flags f = panel.layout->flags; nk_group_scrolled_end(ctx); if (f & NK_WINDOW_CLOSED) return NK_WINDOW_CLOSED; if (f & NK_WINDOW_MINIMIZED) return NK_WINDOW_MINIMIZED; } return 1; } NK_API void nk_group_scrolled_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *parent; struct nk_panel *g; struct nk_rect clip; struct nk_window pan; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; /* make sure nk_group_begin was called correctly */ NK_ASSERT(ctx->current); win = ctx->current; NK_ASSERT(win->layout); g = win->layout; NK_ASSERT(g->parent); parent = g->parent; /* dummy window */ nk_zero_struct(pan); panel_padding = nk_panel_get_padding(&ctx->style, NK_PANEL_GROUP); pan.bounds.y = g->bounds.y - (g->header_height + g->menu.h); pan.bounds.x = g->bounds.x - panel_padding.x; pan.bounds.w = g->bounds.w + 2 * panel_padding.x; pan.bounds.h = g->bounds.h + g->header_height + g->menu.h; if (g->flags & NK_WINDOW_BORDER) { pan.bounds.x -= g->border; pan.bounds.y -= g->border; pan.bounds.w += 2*g->border; pan.bounds.h += 2*g->border; } if (!(g->flags & NK_WINDOW_NO_SCROLLBAR)) { pan.bounds.w += ctx->style.window.scrollbar_size.x; pan.bounds.h += ctx->style.window.scrollbar_size.y; } pan.scrollbar.x = *g->offset_x; pan.scrollbar.y = *g->offset_y; pan.flags = g->flags; pan.buffer = win->buffer; pan.layout = g; pan.parent = win; ctx->current = &pan; /* make sure group has correct clipping rectangle */ nk_unify(&clip, &parent->clip, pan.bounds.x, pan.bounds.y, pan.bounds.x + pan.bounds.w, pan.bounds.y + pan.bounds.h + panel_padding.x); nk_push_scissor(&pan.buffer, clip); nk_end(ctx); win->buffer = pan.buffer; nk_push_scissor(&win->buffer, parent->clip); ctx->current = win; win->layout = parent; g->bounds = pan.bounds; return; } NK_API int nk_group_scrolled_begin(struct nk_context *ctx, struct nk_scroll *scroll, const char *title, nk_flags flags) { return nk_group_scrolled_offset_begin(ctx, &scroll->x, &scroll->y, title, flags); } NK_API int nk_group_begin_titled(struct nk_context *ctx, const char *id, const char *title, nk_flags flags) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset; nk_uint *y_offset; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return 0; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset = nk_find_value(win, id_hash); if (!x_offset) { x_offset = nk_add_value(ctx, win, id_hash, 0); y_offset = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset); NK_ASSERT(y_offset); if (!x_offset || !y_offset) return 0; *x_offset = *y_offset = 0; } else y_offset = nk_find_value(win, id_hash+1); return nk_group_scrolled_offset_begin(ctx, x_offset, y_offset, title, flags); } NK_API int nk_group_begin(struct nk_context *ctx, const char *title, nk_flags flags) { return nk_group_begin_titled(ctx, title, title, flags); } NK_API void nk_group_end(struct nk_context *ctx) { nk_group_scrolled_end(ctx); } NK_API void nk_group_get_scroll(struct nk_context *ctx, const char *id, nk_uint *x_offset, nk_uint *y_offset) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset_ptr; nk_uint *y_offset_ptr; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset_ptr = nk_find_value(win, id_hash); if (!x_offset_ptr) { x_offset_ptr = nk_add_value(ctx, win, id_hash, 0); y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset_ptr); NK_ASSERT(y_offset_ptr); if (!x_offset_ptr || !y_offset_ptr) return; *x_offset_ptr = *y_offset_ptr = 0; } else y_offset_ptr = nk_find_value(win, id_hash+1); if (x_offset) *x_offset = *x_offset_ptr; if (y_offset) *y_offset = *y_offset_ptr; } NK_API void nk_group_set_scroll(struct nk_context *ctx, const char *id, nk_uint x_offset, nk_uint y_offset) { int id_len; nk_hash id_hash; struct nk_window *win; nk_uint *x_offset_ptr; nk_uint *y_offset_ptr; NK_ASSERT(ctx); NK_ASSERT(id); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !id) return; /* find persistent group scrollbar value */ win = ctx->current; id_len = (int)nk_strlen(id); id_hash = nk_murmur_hash(id, (int)id_len, NK_PANEL_GROUP); x_offset_ptr = nk_find_value(win, id_hash); if (!x_offset_ptr) { x_offset_ptr = nk_add_value(ctx, win, id_hash, 0); y_offset_ptr = nk_add_value(ctx, win, id_hash+1, 0); NK_ASSERT(x_offset_ptr); NK_ASSERT(y_offset_ptr); if (!x_offset_ptr || !y_offset_ptr) return; *x_offset_ptr = *y_offset_ptr = 0; } else y_offset_ptr = nk_find_value(win, id_hash+1); *x_offset_ptr = x_offset; *y_offset_ptr = y_offset; } ================================================ FILE: src/nuklear_image.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * IMAGE * * ===============================================================*/ NK_API nk_handle nk_handle_ptr(void *ptr) { nk_handle handle = {0}; handle.ptr = ptr; return handle; } NK_API nk_handle nk_handle_id(int id) { nk_handle handle; nk_zero_struct(handle); handle.id = id; return handle; } NK_API struct nk_image nk_subimage_ptr(void *ptr, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.ptr = ptr; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_subimage_id(int id, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.id = id; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_subimage_handle(nk_handle handle, unsigned short w, unsigned short h, struct nk_rect r) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle = handle; s.w = w; s.h = h; s.region[0] = (unsigned short)r.x; s.region[1] = (unsigned short)r.y; s.region[2] = (unsigned short)r.w; s.region[3] = (unsigned short)r.h; return s; } NK_API struct nk_image nk_image_handle(nk_handle handle) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle = handle; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API struct nk_image nk_image_ptr(void *ptr) { struct nk_image s; nk_zero(&s, sizeof(s)); NK_ASSERT(ptr); s.handle.ptr = ptr; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API struct nk_image nk_image_id(int id) { struct nk_image s; nk_zero(&s, sizeof(s)); s.handle.id = id; s.w = 0; s.h = 0; s.region[0] = 0; s.region[1] = 0; s.region[2] = 0; s.region[3] = 0; return s; } NK_API int nk_image_is_subimage(const struct nk_image* img) { NK_ASSERT(img); return !(img->w == 0 && img->h == 0); } NK_API void nk_image(struct nk_context *ctx, struct nk_image img) { struct nk_window *win; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; if (!nk_widget(&bounds, ctx)) return; nk_draw_image(&win->buffer, bounds, &img, nk_white); } NK_API void nk_image_color(struct nk_context *ctx, struct nk_image img, struct nk_color col) { struct nk_window *win; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; if (!nk_widget(&bounds, ctx)) return; nk_draw_image(&win->buffer, bounds, &img, col); } ================================================ FILE: src/nuklear_input.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * INPUT * * ===============================================================*/ NK_API void nk_input_begin(struct nk_context *ctx) { int i; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; for (i = 0; i < NK_BUTTON_MAX; ++i) in->mouse.buttons[i].clicked = 0; in->keyboard.text_len = 0; in->mouse.scroll_delta = nk_vec2(0,0); in->mouse.prev.x = in->mouse.pos.x; in->mouse.prev.y = in->mouse.pos.y; in->mouse.delta.x = 0; in->mouse.delta.y = 0; for (i = 0; i < NK_KEY_MAX; i++) in->keyboard.keys[i].clicked = 0; } NK_API void nk_input_end(struct nk_context *ctx) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; if (in->mouse.grab) in->mouse.grab = 0; if (in->mouse.ungrab) { in->mouse.grabbed = 0; in->mouse.ungrab = 0; in->mouse.grab = 0; } } NK_API void nk_input_motion(struct nk_context *ctx, int x, int y) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; in->mouse.pos.x = (float)x; in->mouse.pos.y = (float)y; in->mouse.delta.x = in->mouse.pos.x - in->mouse.prev.x; in->mouse.delta.y = in->mouse.pos.y - in->mouse.prev.y; } NK_API void nk_input_key(struct nk_context *ctx, enum nk_keys key, int down) { struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; #ifdef NK_KEYSTATE_BASED_INPUT if (in->keyboard.keys[key].down != down) in->keyboard.keys[key].clicked++; #else in->keyboard.keys[key].clicked++; #endif in->keyboard.keys[key].down = down; } NK_API void nk_input_button(struct nk_context *ctx, enum nk_buttons id, int x, int y, int down) { struct nk_mouse_button *btn; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; if (in->mouse.buttons[id].down == down) return; btn = &in->mouse.buttons[id]; btn->clicked_pos.x = (float)x; btn->clicked_pos.y = (float)y; btn->down = down; btn->clicked++; } NK_API void nk_input_scroll(struct nk_context *ctx, struct nk_vec2 val) { NK_ASSERT(ctx); if (!ctx) return; ctx->input.mouse.scroll_delta.x += val.x; ctx->input.mouse.scroll_delta.y += val.y; } NK_API void nk_input_glyph(struct nk_context *ctx, const nk_glyph glyph) { int len = 0; nk_rune unicode; struct nk_input *in; NK_ASSERT(ctx); if (!ctx) return; in = &ctx->input; len = nk_utf_decode(glyph, &unicode, NK_UTF_SIZE); if (len && ((in->keyboard.text_len + len) < NK_INPUT_MAX)) { nk_utf_encode(unicode, &in->keyboard.text[in->keyboard.text_len], NK_INPUT_MAX - in->keyboard.text_len); in->keyboard.text_len += len; } } NK_API void nk_input_char(struct nk_context *ctx, char c) { nk_glyph glyph; NK_ASSERT(ctx); if (!ctx) return; glyph[0] = c; nk_input_glyph(ctx, glyph); } NK_API void nk_input_unicode(struct nk_context *ctx, nk_rune unicode) { nk_glyph rune; NK_ASSERT(ctx); if (!ctx) return; nk_utf_encode(unicode, rune, NK_UTF_SIZE); nk_input_glyph(ctx, rune); } NK_API int nk_input_has_mouse_click(const struct nk_input *i, enum nk_buttons id) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (btn->clicked && btn->down == nk_false) ? nk_true : nk_false; } NK_API int nk_input_has_mouse_click_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; if (!NK_INBOX(btn->clicked_pos.x,btn->clicked_pos.y,b.x,b.y,b.w,b.h)) return nk_false; return nk_true; } NK_API int nk_input_has_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return nk_input_has_mouse_click_in_rect(i, id, b) && (btn->down == down); } NK_API int nk_input_is_mouse_click_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (nk_input_has_mouse_click_down_in_rect(i, id, b, nk_false) && btn->clicked) ? nk_true : nk_false; } NK_API int nk_input_is_mouse_click_down_in_rect(const struct nk_input *i, enum nk_buttons id, struct nk_rect b, int down) { const struct nk_mouse_button *btn; if (!i) return nk_false; btn = &i->mouse.buttons[id]; return (nk_input_has_mouse_click_down_in_rect(i, id, b, down) && btn->clicked) ? nk_true : nk_false; } NK_API int nk_input_any_mouse_click_in_rect(const struct nk_input *in, struct nk_rect b) { int i, down = 0; for (i = 0; i < NK_BUTTON_MAX; ++i) down = down || nk_input_is_mouse_click_in_rect(in, (enum nk_buttons)i, b); return down; } NK_API int nk_input_is_mouse_hovering_rect(const struct nk_input *i, struct nk_rect rect) { if (!i) return nk_false; return NK_INBOX(i->mouse.pos.x, i->mouse.pos.y, rect.x, rect.y, rect.w, rect.h); } NK_API int nk_input_is_mouse_prev_hovering_rect(const struct nk_input *i, struct nk_rect rect) { if (!i) return nk_false; return NK_INBOX(i->mouse.prev.x, i->mouse.prev.y, rect.x, rect.y, rect.w, rect.h); } NK_API int nk_input_mouse_clicked(const struct nk_input *i, enum nk_buttons id, struct nk_rect rect) { if (!i) return nk_false; if (!nk_input_is_mouse_hovering_rect(i, rect)) return nk_false; return nk_input_is_mouse_click_in_rect(i, id, rect); } NK_API int nk_input_is_mouse_down(const struct nk_input *i, enum nk_buttons id) { if (!i) return nk_false; return i->mouse.buttons[id].down; } NK_API int nk_input_is_mouse_pressed(const struct nk_input *i, enum nk_buttons id) { const struct nk_mouse_button *b; if (!i) return nk_false; b = &i->mouse.buttons[id]; if (b->down && b->clicked) return nk_true; return nk_false; } NK_API int nk_input_is_mouse_released(const struct nk_input *i, enum nk_buttons id) { if (!i) return nk_false; return (!i->mouse.buttons[id].down && i->mouse.buttons[id].clicked); } NK_API int nk_input_is_key_pressed(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if ((k->down && k->clicked) || (!k->down && k->clicked >= 2)) return nk_true; return nk_false; } NK_API int nk_input_is_key_released(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if ((!k->down && k->clicked) || (k->down && k->clicked >= 2)) return nk_true; return nk_false; } NK_API int nk_input_is_key_down(const struct nk_input *i, enum nk_keys key) { const struct nk_key *k; if (!i) return nk_false; k = &i->keyboard.keys[key]; if (k->down) return nk_true; return nk_false; } ================================================ FILE: src/nuklear_internal.h ================================================ #ifndef NK_INTERNAL_H #define NK_INTERNAL_H #ifndef NK_POOL_DEFAULT_CAPACITY #define NK_POOL_DEFAULT_CAPACITY 16 #endif #ifndef NK_DEFAULT_COMMAND_BUFFER_SIZE #define NK_DEFAULT_COMMAND_BUFFER_SIZE (4*1024) #endif #ifndef NK_BUFFER_DEFAULT_INITIAL_SIZE #define NK_BUFFER_DEFAULT_INITIAL_SIZE (4*1024) #endif /* standard library headers */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR #include /* malloc, free */ #endif #ifdef NK_INCLUDE_STANDARD_IO #include /* fopen, fclose,... */ #endif #ifdef NK_INCLUDE_STANDARD_VARARGS #include /* valist, va_start, va_end, ... */ #endif #ifndef NK_ASSERT #include #define NK_ASSERT(expr) assert(expr) #endif #ifndef NK_MEMSET #define NK_MEMSET nk_memset #endif #ifndef NK_MEMCPY #define NK_MEMCPY nk_memcopy #endif #ifndef NK_SQRT #define NK_SQRT nk_sqrt #endif #ifndef NK_SIN #define NK_SIN nk_sin #endif #ifndef NK_COS #define NK_COS nk_cos #endif #ifndef NK_STRTOD #define NK_STRTOD nk_strtod #endif #ifndef NK_DTOA #define NK_DTOA nk_dtoa #endif #define NK_DEFAULT (-1) #ifndef NK_VSNPRINTF /* If your compiler does support `vsnprintf` I would highly recommend * defining this to vsnprintf instead since `vsprintf` is basically * unbelievable unsafe and should *NEVER* be used. But I have to support * it since C89 only provides this unsafe version. */ #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) ||\ (defined(__cplusplus) && (__cplusplus >= 201103L)) || \ (defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L)) ||\ (defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 500)) ||\ defined(_ISOC99_SOURCE) || defined(_BSD_SOURCE) #define NK_VSNPRINTF(s,n,f,a) vsnprintf(s,n,f,a) #else #define NK_VSNPRINTF(s,n,f,a) vsprintf(s,f,a) #endif #endif #define NK_SCHAR_MIN (-127) #define NK_SCHAR_MAX 127 #define NK_UCHAR_MIN 0 #define NK_UCHAR_MAX 256 #define NK_SSHORT_MIN (-32767) #define NK_SSHORT_MAX 32767 #define NK_USHORT_MIN 0 #define NK_USHORT_MAX 65535 #define NK_SINT_MIN (-2147483647) #define NK_SINT_MAX 2147483647 #define NK_UINT_MIN 0 #define NK_UINT_MAX 4294967295u /* Make sure correct type size: * This will fire with a negative subscript error if the type sizes * are set incorrectly by the compiler, and compile out if not */ NK_STATIC_ASSERT(sizeof(nk_size) >= sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_ptr) == sizeof(void*)); NK_STATIC_ASSERT(sizeof(nk_flags) >= 4); NK_STATIC_ASSERT(sizeof(nk_rune) >= 4); NK_STATIC_ASSERT(sizeof(nk_ushort) == 2); NK_STATIC_ASSERT(sizeof(nk_short) == 2); NK_STATIC_ASSERT(sizeof(nk_uint) == 4); NK_STATIC_ASSERT(sizeof(nk_int) == 4); NK_STATIC_ASSERT(sizeof(nk_byte) == 1); NK_GLOBAL const struct nk_rect nk_null_rect = {-8192.0f, -8192.0f, 16384, 16384}; #define NK_FLOAT_PRECISION 0.00000000000001 NK_GLOBAL const struct nk_color nk_red = {255,0,0,255}; NK_GLOBAL const struct nk_color nk_green = {0,255,0,255}; NK_GLOBAL const struct nk_color nk_blue = {0,0,255,255}; NK_GLOBAL const struct nk_color nk_white = {255,255,255,255}; NK_GLOBAL const struct nk_color nk_black = {0,0,0,255}; NK_GLOBAL const struct nk_color nk_yellow = {255,255,0,255}; /* widget */ #define nk_widget_state_reset(s)\ if ((*(s)) & NK_WIDGET_STATE_MODIFIED)\ (*(s)) = NK_WIDGET_STATE_INACTIVE|NK_WIDGET_STATE_MODIFIED;\ else (*(s)) = NK_WIDGET_STATE_INACTIVE; /* math */ NK_LIB float nk_inv_sqrt(float n); NK_LIB float nk_sqrt(float x); NK_LIB float nk_sin(float x); NK_LIB float nk_cos(float x); NK_LIB nk_uint nk_round_up_pow2(nk_uint v); NK_LIB struct nk_rect nk_shrink_rect(struct nk_rect r, float amount); NK_LIB struct nk_rect nk_pad_rect(struct nk_rect r, struct nk_vec2 pad); NK_LIB void nk_unify(struct nk_rect *clip, const struct nk_rect *a, float x0, float y0, float x1, float y1); NK_LIB double nk_pow(double x, int n); NK_LIB int nk_ifloord(double x); NK_LIB int nk_ifloorf(float x); NK_LIB int nk_iceilf(float x); NK_LIB int nk_log10(double n); /* util */ enum {NK_DO_NOT_STOP_ON_NEW_LINE, NK_STOP_ON_NEW_LINE}; NK_LIB int nk_is_lower(int c); NK_LIB int nk_is_upper(int c); NK_LIB int nk_to_upper(int c); NK_LIB int nk_to_lower(int c); NK_LIB void* nk_memcopy(void *dst, const void *src, nk_size n); NK_LIB void nk_memset(void *ptr, int c0, nk_size size); NK_LIB void nk_zero(void *ptr, nk_size size); NK_LIB char *nk_itoa(char *s, long n); NK_LIB int nk_string_float_limit(char *string, int prec); NK_LIB char *nk_dtoa(char *s, double n); NK_LIB int nk_text_clamp(const struct nk_user_font *font, const char *text, int text_len, float space, int *glyphs, float *text_width, nk_rune *sep_list, int sep_count); NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *font, const char *begin, int byte_len, float row_height, const char **remaining, struct nk_vec2 *out_offset, int *glyphs, int op); #ifdef NK_INCLUDE_STANDARD_VARARGS NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args); #endif #ifdef NK_INCLUDE_STANDARD_IO NK_LIB char *nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc); #endif /* buffer */ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_LIB void* nk_malloc(nk_handle unused, void *old,nk_size size); NK_LIB void nk_mfree(nk_handle unused, void *ptr); #endif NK_LIB void* nk_buffer_align(void *unaligned, nk_size align, nk_size *alignment, enum nk_buffer_allocation_type type); NK_LIB void* nk_buffer_alloc(struct nk_buffer *b, enum nk_buffer_allocation_type type, nk_size size, nk_size align); NK_LIB void* nk_buffer_realloc(struct nk_buffer *b, nk_size capacity, nk_size *size); /* draw */ NK_LIB void nk_command_buffer_init(struct nk_command_buffer *cb, struct nk_buffer *b, enum nk_command_clipping clip); NK_LIB void nk_command_buffer_reset(struct nk_command_buffer *b); NK_LIB void* nk_command_buffer_push(struct nk_command_buffer* b, enum nk_command_type t, nk_size size); NK_LIB void nk_draw_symbol(struct nk_command_buffer *out, enum nk_symbol_type type, struct nk_rect content, struct nk_color background, struct nk_color foreground, float border_width, const struct nk_user_font *font); /* buffering */ NK_LIB void nk_start_buffer(struct nk_context *ctx, struct nk_command_buffer *b); NK_LIB void nk_start(struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_start_popup(struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_finish_popup(struct nk_context *ctx, struct nk_window*); NK_LIB void nk_finish_buffer(struct nk_context *ctx, struct nk_command_buffer *b); NK_LIB void nk_finish(struct nk_context *ctx, struct nk_window *w); NK_LIB void nk_build(struct nk_context *ctx); /* text editor */ NK_LIB void nk_textedit_clear_state(struct nk_text_edit *state, enum nk_text_edit_type type, nk_plugin_filter filter); NK_LIB void nk_textedit_click(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height); NK_LIB void nk_textedit_drag(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height); NK_LIB void nk_textedit_key(struct nk_text_edit *state, enum nk_keys key, int shift_mod, const struct nk_user_font *font, float row_height); /* window */ enum nk_window_insert_location { NK_INSERT_BACK, /* inserts window into the back of list (front of screen) */ NK_INSERT_FRONT /* inserts window into the front of list (back of screen) */ }; NK_LIB void *nk_create_window(struct nk_context *ctx); NK_LIB void nk_remove_window(struct nk_context*, struct nk_window*); NK_LIB void nk_free_window(struct nk_context *ctx, struct nk_window *win); NK_LIB struct nk_window *nk_find_window(struct nk_context *ctx, nk_hash hash, const char *name); NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc); /* pool */ NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity); NK_LIB void nk_pool_free(struct nk_pool *pool); NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size); NK_LIB struct nk_page_element *nk_pool_alloc(struct nk_pool *pool); /* page-element */ NK_LIB struct nk_page_element* nk_create_page_element(struct nk_context *ctx); NK_LIB void nk_link_page_element_into_freelist(struct nk_context *ctx, struct nk_page_element *elem); NK_LIB void nk_free_page_element(struct nk_context *ctx, struct nk_page_element *elem); /* table */ NK_LIB struct nk_table* nk_create_table(struct nk_context *ctx); NK_LIB void nk_remove_table(struct nk_window *win, struct nk_table *tbl); NK_LIB void nk_free_table(struct nk_context *ctx, struct nk_table *tbl); NK_LIB void nk_push_table(struct nk_window *win, struct nk_table *tbl); NK_LIB nk_uint *nk_add_value(struct nk_context *ctx, struct nk_window *win, nk_hash name, nk_uint value); NK_LIB nk_uint *nk_find_value(struct nk_window *win, nk_hash name); /* panel */ NK_LIB void *nk_create_panel(struct nk_context *ctx); NK_LIB void nk_free_panel(struct nk_context*, struct nk_panel *pan); NK_LIB int nk_panel_has_header(nk_flags flags, const char *title); NK_LIB struct nk_vec2 nk_panel_get_padding(const struct nk_style *style, enum nk_panel_type type); NK_LIB float nk_panel_get_border(const struct nk_style *style, nk_flags flags, enum nk_panel_type type); NK_LIB struct nk_color nk_panel_get_border_color(const struct nk_style *style, enum nk_panel_type type); NK_LIB int nk_panel_is_sub(enum nk_panel_type type); NK_LIB int nk_panel_is_nonblock(enum nk_panel_type type); NK_LIB int nk_panel_begin(struct nk_context *ctx, const char *title, enum nk_panel_type panel_type); NK_LIB void nk_panel_end(struct nk_context *ctx); /* layout */ NK_LIB float nk_layout_row_calculate_usable_space(const struct nk_style *style, enum nk_panel_type type, float total_space, int columns); NK_LIB void nk_panel_layout(const struct nk_context *ctx, struct nk_window *win, float height, int cols); NK_LIB void nk_row_layout(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, int width); NK_LIB void nk_panel_alloc_row(const struct nk_context *ctx, struct nk_window *win); NK_LIB void nk_layout_widget_space(struct nk_rect *bounds, const struct nk_context *ctx, struct nk_window *win, int modify); NK_LIB void nk_panel_alloc_space(struct nk_rect *bounds, const struct nk_context *ctx); NK_LIB void nk_layout_peek(struct nk_rect *bounds, struct nk_context *ctx); /* popup */ NK_LIB int nk_nonblock_begin(struct nk_context *ctx, nk_flags flags, struct nk_rect body, struct nk_rect header, enum nk_panel_type panel_type); /* text */ struct nk_text { struct nk_vec2 padding; struct nk_color background; struct nk_color text; }; NK_LIB void nk_widget_text(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, nk_flags a, const struct nk_user_font *f); NK_LIB void nk_widget_text_wrap(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, const struct nk_user_font *f); /* button */ NK_LIB int nk_button_behavior(nk_flags *state, struct nk_rect r, const struct nk_input *i, enum nk_button_behavior behavior); NK_LIB const struct nk_style_item* nk_draw_button(struct nk_command_buffer *out, const struct nk_rect *bounds, nk_flags state, const struct nk_style_button *style); NK_LIB int nk_do_button(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, const struct nk_style_button *style, const struct nk_input *in, enum nk_button_behavior behavior, struct nk_rect *content); NK_LIB void nk_draw_button_text(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const char *txt, int len, nk_flags text_alignment, const struct nk_user_font *font); NK_LIB int nk_do_button_text(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *string, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB void nk_draw_button_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, enum nk_symbol_type type, const struct nk_user_font *font); NK_LIB int nk_do_button_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB void nk_draw_button_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *content, nk_flags state, const struct nk_style_button *style, const struct nk_image *img); NK_LIB int nk_do_button_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, enum nk_button_behavior b, const struct nk_style_button *style, const struct nk_input *in); NK_LIB void nk_draw_button_text_symbol(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *symbol, nk_flags state, const struct nk_style_button *style, const char *str, int len, enum nk_symbol_type type, const struct nk_user_font *font); NK_LIB int nk_do_button_text_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, enum nk_symbol_type symbol, const char *str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in); NK_LIB void nk_draw_button_text_image(struct nk_command_buffer *out, const struct nk_rect *bounds, const struct nk_rect *label, const struct nk_rect *image, nk_flags state, const struct nk_style_button *style, const char *str, int len, const struct nk_user_font *font, const struct nk_image *img); NK_LIB int nk_do_button_text_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, struct nk_image img, const char* str, int len, nk_flags align, enum nk_button_behavior behavior, const struct nk_style_button *style, const struct nk_user_font *font, const struct nk_input *in); /* toggle */ enum nk_toggle_type { NK_TOGGLE_CHECK, NK_TOGGLE_OPTION }; NK_LIB int nk_toggle_behavior(const struct nk_input *in, struct nk_rect select, nk_flags *state, int active); NK_LIB void nk_draw_checkbox(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font); NK_LIB void nk_draw_option(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font); NK_LIB int nk_do_toggle(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, int *active, const char *str, int len, enum nk_toggle_type type, const struct nk_style_toggle *style, const struct nk_input *in, const struct nk_user_font *font); /* progress */ NK_LIB nk_size nk_progress_behavior(nk_flags *state, struct nk_input *in, struct nk_rect r, struct nk_rect cursor, nk_size max, nk_size value, int modifiable); NK_LIB void nk_draw_progress(struct nk_command_buffer *out, nk_flags state, const struct nk_style_progress *style, const struct nk_rect *bounds, const struct nk_rect *scursor, nk_size value, nk_size max); NK_LIB nk_size nk_do_progress(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_size value, nk_size max, int modifiable, const struct nk_style_progress *style, struct nk_input *in); /* slider */ NK_LIB float nk_slider_behavior(nk_flags *state, struct nk_rect *logical_cursor, struct nk_rect *visual_cursor, struct nk_input *in, struct nk_rect bounds, float slider_min, float slider_max, float slider_value, float slider_step, float slider_steps); NK_LIB void nk_draw_slider(struct nk_command_buffer *out, nk_flags state, const struct nk_style_slider *style, const struct nk_rect *bounds, const struct nk_rect *visual_cursor, float min, float value, float max); NK_LIB float nk_do_slider(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, float min, float val, float max, float step, const struct nk_style_slider *style, struct nk_input *in, const struct nk_user_font *font); /* scrollbar */ NK_LIB float nk_scrollbar_behavior(nk_flags *state, struct nk_input *in, int has_scrolling, const struct nk_rect *scroll, const struct nk_rect *cursor, const struct nk_rect *empty0, const struct nk_rect *empty1, float scroll_offset, float target, float scroll_step, enum nk_orientation o); NK_LIB void nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state, const struct nk_style_scrollbar *style, const struct nk_rect *bounds, const struct nk_rect *scroll); NK_LIB float nk_do_scrollbarv(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font); NK_LIB float nk_do_scrollbarh(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font); /* selectable */ NK_LIB void nk_draw_selectable(struct nk_command_buffer *out, nk_flags state, const struct nk_style_selectable *style, int active, const struct nk_rect *bounds, const struct nk_rect *icon, const struct nk_image *img, enum nk_symbol_type sym, const char *string, int len, nk_flags align, const struct nk_user_font *font); NK_LIB int nk_do_selectable(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font); NK_LIB int nk_do_selectable_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_image *img, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font); /* edit */ NK_LIB void nk_edit_draw_text(struct nk_command_buffer *out, const struct nk_style_edit *style, float pos_x, float pos_y, float x_offset, const char *text, int byte_len, float row_height, const struct nk_user_font *font, struct nk_color background, struct nk_color foreground, int is_selected); NK_LIB nk_flags nk_do_edit(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_flags flags, nk_plugin_filter filter, struct nk_text_edit *edit, const struct nk_style_edit *style, struct nk_input *in, const struct nk_user_font *font); /* color-picker */ NK_LIB int nk_color_picker_behavior(nk_flags *state, const struct nk_rect *bounds, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf *color, const struct nk_input *in); NK_LIB void nk_draw_color_picker(struct nk_command_buffer *o, const struct nk_rect *matrix, const struct nk_rect *hue_bar, const struct nk_rect *alpha_bar, struct nk_colorf col); NK_LIB int nk_do_color_picker(nk_flags *state, struct nk_command_buffer *out, struct nk_colorf *col, enum nk_color_format fmt, struct nk_rect bounds, struct nk_vec2 padding, const struct nk_input *in, const struct nk_user_font *font); /* property */ enum nk_property_status { NK_PROPERTY_DEFAULT, NK_PROPERTY_EDIT, NK_PROPERTY_DRAG }; enum nk_property_filter { NK_FILTER_INT, NK_FILTER_FLOAT }; enum nk_property_kind { NK_PROPERTY_INT, NK_PROPERTY_FLOAT, NK_PROPERTY_DOUBLE }; union nk_property { int i; float f; double d; }; struct nk_property_variant { enum nk_property_kind kind; union nk_property value; union nk_property min_value; union nk_property max_value; union nk_property step; }; NK_LIB struct nk_property_variant nk_property_variant_int(int value, int min_value, int max_value, int step); NK_LIB struct nk_property_variant nk_property_variant_float(float value, float min_value, float max_value, float step); NK_LIB struct nk_property_variant nk_property_variant_double(double value, double min_value, double max_value, double step); NK_LIB void nk_drag_behavior(nk_flags *state, const struct nk_input *in, struct nk_rect drag, struct nk_property_variant *variant, float inc_per_pixel); NK_LIB void nk_property_behavior(nk_flags *ws, const struct nk_input *in, struct nk_rect property, struct nk_rect label, struct nk_rect edit, struct nk_rect empty, int *state, struct nk_property_variant *variant, float inc_per_pixel); NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_style_property *style, const struct nk_rect *bounds, const struct nk_rect *label, nk_flags state, const char *name, int len, const struct nk_user_font *font); NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior); NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter); #endif ================================================ FILE: src/nuklear_layout.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * LAYOUT * * ===============================================================*/ NK_API void nk_layout_set_min_row_height(struct nk_context *ctx, float height) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.min_height = height; } NK_API void nk_layout_reset_min_row_height(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.min_height = ctx->style.font->height; layout->row.min_height += ctx->style.text.padding.y*2; layout->row.min_height += ctx->style.window.min_row_height_padding*2; } NK_LIB float nk_layout_row_calculate_usable_space(const struct nk_style *style, enum nk_panel_type type, float total_space, int columns) { float panel_padding; float panel_spacing; float panel_space; struct nk_vec2 spacing; struct nk_vec2 padding; spacing = style->window.spacing; padding = nk_panel_get_padding(style, type); /* calculate the usable panel space */ panel_padding = 2 * padding.x; panel_spacing = (float)NK_MAX(columns - 1, 0) * spacing.x; panel_space = total_space - panel_padding - panel_spacing; return panel_space; } NK_LIB void nk_panel_layout(const struct nk_context *ctx, struct nk_window *win, float height, int cols) { struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; struct nk_vec2 item_spacing; struct nk_color color; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* prefetch some configuration data */ layout = win->layout; style = &ctx->style; out = &win->buffer; color = style->window.background; item_spacing = style->window.spacing; /* if one of these triggers you forgot to add an `if` condition around either a window, group, popup, combobox or contextual menu `begin` and `end` block. Example: if (nk_begin(...) {...} nk_end(...); or if (nk_group_begin(...) { nk_group_end(...);} */ NK_ASSERT(!(layout->flags & NK_WINDOW_MINIMIZED)); NK_ASSERT(!(layout->flags & NK_WINDOW_HIDDEN)); NK_ASSERT(!(layout->flags & NK_WINDOW_CLOSED)); /* update the current row and set the current row layout */ layout->row.index = 0; layout->at_y += layout->row.height; layout->row.columns = cols; if (height == 0.0f) layout->row.height = NK_MAX(height, layout->row.min_height) + item_spacing.y; else layout->row.height = height + item_spacing.y; layout->row.item_offset = 0; if (layout->flags & NK_WINDOW_DYNAMIC) { /* draw background for dynamic panels */ struct nk_rect background; background.x = win->bounds.x; background.w = win->bounds.w; background.y = layout->at_y - 1.0f; background.h = layout->row.height + 1.0f; nk_fill_rect(out, background, 0, color); } } NK_LIB void nk_row_layout(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, int width) { /* update the current row and set the current row layout */ struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; nk_panel_layout(ctx, win, height, cols); if (fmt == NK_DYNAMIC) win->layout->row.type = NK_LAYOUT_DYNAMIC_FIXED; else win->layout->row.type = NK_LAYOUT_STATIC_FIXED; win->layout->row.ratio = 0; win->layout->row.filled = 0; win->layout->row.item_offset = 0; win->layout->row.item_width = (float)width; } NK_API float nk_layout_ratio_from_pixel(struct nk_context *ctx, float pixel_width) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(pixel_width); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; return NK_CLAMP(0.0f, pixel_width/win->bounds.x, 1.0f); } NK_API void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols) { nk_row_layout(ctx, NK_DYNAMIC, height, cols, 0); } NK_API void nk_layout_row_static(struct nk_context *ctx, float height, int item_width, int cols) { nk_row_layout(ctx, NK_STATIC, height, cols, item_width); } NK_API void nk_layout_row_begin(struct nk_context *ctx, enum nk_layout_format fmt, float row_height, int cols) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, row_height, cols); if (fmt == NK_DYNAMIC) layout->row.type = NK_LAYOUT_DYNAMIC_ROW; else layout->row.type = NK_LAYOUT_STATIC_ROW; layout->row.ratio = 0; layout->row.filled = 0; layout->row.item_width = 0; layout->row.item_offset = 0; layout->row.columns = cols; } NK_API void nk_layout_row_push(struct nk_context *ctx, float ratio_or_width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_STATIC_ROW || layout->row.type == NK_LAYOUT_DYNAMIC_ROW); if (layout->row.type != NK_LAYOUT_STATIC_ROW && layout->row.type != NK_LAYOUT_DYNAMIC_ROW) return; if (layout->row.type == NK_LAYOUT_DYNAMIC_ROW) { float ratio = ratio_or_width; if ((ratio + layout->row.filled) > 1.0f) return; if (ratio > 0.0f) layout->row.item_width = NK_SATURATE(ratio); else layout->row.item_width = 1.0f - layout->row.filled; } else layout->row.item_width = ratio_or_width; } NK_API void nk_layout_row_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_STATIC_ROW || layout->row.type == NK_LAYOUT_DYNAMIC_ROW); if (layout->row.type != NK_LAYOUT_STATIC_ROW && layout->row.type != NK_LAYOUT_DYNAMIC_ROW) return; layout->row.item_width = 0; layout->row.item_offset = 0; } NK_API void nk_layout_row(struct nk_context *ctx, enum nk_layout_format fmt, float height, int cols, const float *ratio) { int i; int n_undef = 0; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, cols); if (fmt == NK_DYNAMIC) { /* calculate width of undefined widget ratios */ float r = 0; layout->row.ratio = ratio; for (i = 0; i < cols; ++i) { if (ratio[i] < 0.0f) n_undef++; else r += ratio[i]; } r = NK_SATURATE(1.0f - r); layout->row.type = NK_LAYOUT_DYNAMIC; layout->row.item_width = (r > 0 && n_undef > 0) ? (r / (float)n_undef):0; } else { layout->row.ratio = ratio; layout->row.type = NK_LAYOUT_STATIC; layout->row.item_width = 0; layout->row.item_offset = 0; } layout->row.item_offset = 0; layout->row.filled = 0; } NK_API void nk_layout_row_template_begin(struct nk_context *ctx, float height) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, 1); layout->row.type = NK_LAYOUT_TEMPLATE; layout->row.columns = 0; layout->row.ratio = 0; layout->row.item_width = 0; layout->row.item_height = 0; layout->row.item_offset = 0; layout->row.filled = 0; layout->row.item.x = 0; layout->row.item.y = 0; layout->row.item.w = 0; layout->row.item.h = 0; } NK_API void nk_layout_row_template_push_dynamic(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = -1.0f; } NK_API void nk_layout_row_template_push_variable(struct nk_context *ctx, float min_width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = -min_width; } NK_API void nk_layout_row_template_push_static(struct nk_context *ctx, float width) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); NK_ASSERT(layout->row.columns < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; if (layout->row.columns >= NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS) return; layout->row.templates[layout->row.columns++] = width; } NK_API void nk_layout_row_template_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; int i = 0; int variable_count = 0; int min_variable_count = 0; float min_fixed_width = 0.0f; float total_fixed_width = 0.0f; float max_variable_width = 0.0f; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; NK_ASSERT(layout->row.type == NK_LAYOUT_TEMPLATE); if (layout->row.type != NK_LAYOUT_TEMPLATE) return; for (i = 0; i < layout->row.columns; ++i) { float width = layout->row.templates[i]; if (width >= 0.0f) { total_fixed_width += width; min_fixed_width += width; } else if (width < -1.0f) { width = -width; total_fixed_width += width; max_variable_width = NK_MAX(max_variable_width, width); variable_count++; } else { min_variable_count++; variable_count++; } } if (variable_count) { float space = nk_layout_row_calculate_usable_space(&ctx->style, layout->type, layout->bounds.w, layout->row.columns); float var_width = (NK_MAX(space-min_fixed_width,0.0f)) / (float)variable_count; int enough_space = var_width >= max_variable_width; if (!enough_space) var_width = (NK_MAX(space-total_fixed_width,0)) / (float)min_variable_count; for (i = 0; i < layout->row.columns; ++i) { float *width = &layout->row.templates[i]; *width = (*width >= 0.0f)? *width: (*width < -1.0f && !enough_space)? -(*width): var_width; } } } NK_API void nk_layout_space_begin(struct nk_context *ctx, enum nk_layout_format fmt, float height, int widget_count) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; nk_panel_layout(ctx, win, height, widget_count); if (fmt == NK_STATIC) layout->row.type = NK_LAYOUT_STATIC_FREE; else layout->row.type = NK_LAYOUT_DYNAMIC_FREE; layout->row.ratio = 0; layout->row.filled = 0; layout->row.item_width = 0; layout->row.item_offset = 0; } NK_API void nk_layout_space_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.item_width = 0; layout->row.item_height = 0; layout->row.item_offset = 0; nk_zero(&layout->row.item, sizeof(layout->row.item)); } NK_API void nk_layout_space_push(struct nk_context *ctx, struct nk_rect rect) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->row.item = rect; } NK_API struct nk_rect nk_layout_space_bounds(struct nk_context *ctx) { struct nk_rect ret; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x = layout->clip.x; ret.y = layout->clip.y; ret.w = layout->clip.w; ret.h = layout->row.height; return ret; } NK_API struct nk_rect nk_layout_widget_bounds(struct nk_context *ctx) { struct nk_rect ret; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x = layout->at_x; ret.y = layout->at_y; ret.w = layout->bounds.w - NK_MAX(layout->at_x - layout->bounds.x,0); ret.h = layout->row.height; return ret; } NK_API struct nk_vec2 nk_layout_space_to_screen(struct nk_context *ctx, struct nk_vec2 ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += layout->at_x - (float)*layout->offset_x; ret.y += layout->at_y - (float)*layout->offset_y; return ret; } NK_API struct nk_vec2 nk_layout_space_to_local(struct nk_context *ctx, struct nk_vec2 ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += -layout->at_x + (float)*layout->offset_x; ret.y += -layout->at_y + (float)*layout->offset_y; return ret; } NK_API struct nk_rect nk_layout_space_rect_to_screen(struct nk_context *ctx, struct nk_rect ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += layout->at_x - (float)*layout->offset_x; ret.y += layout->at_y - (float)*layout->offset_y; return ret; } NK_API struct nk_rect nk_layout_space_rect_to_local(struct nk_context *ctx, struct nk_rect ret) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); win = ctx->current; layout = win->layout; ret.x += -layout->at_x + (float)*layout->offset_x; ret.y += -layout->at_y + (float)*layout->offset_y; return ret; } NK_LIB void nk_panel_alloc_row(const struct nk_context *ctx, struct nk_window *win) { struct nk_panel *layout = win->layout; struct nk_vec2 spacing = ctx->style.window.spacing; const float row_height = layout->row.height - spacing.y; nk_panel_layout(ctx, win, row_height, layout->row.columns); } NK_LIB void nk_layout_widget_space(struct nk_rect *bounds, const struct nk_context *ctx, struct nk_window *win, int modify) { struct nk_panel *layout; const struct nk_style *style; struct nk_vec2 spacing; struct nk_vec2 padding; float item_offset = 0; float item_width = 0; float item_spacing = 0; float panel_space = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; style = &ctx->style; NK_ASSERT(bounds); spacing = style->window.spacing; padding = nk_panel_get_padding(style, layout->type); panel_space = nk_layout_row_calculate_usable_space(&ctx->style, layout->type, layout->bounds.w, layout->row.columns); #define NK_FRAC(x) (x - (int)x) /* will be used to remove fookin gaps */ /* calculate the width of one item inside the current layout space */ switch (layout->row.type) { case NK_LAYOUT_DYNAMIC_FIXED: { /* scaling fixed size widgets item width */ float w = NK_MAX(1.0f,panel_space) / (float)layout->row.columns; item_offset = (float)layout->row.index * w; item_width = w + NK_FRAC(item_offset); item_spacing = (float)layout->row.index * spacing.x; } break; case NK_LAYOUT_DYNAMIC_ROW: { /* scaling single ratio widget width */ float w = layout->row.item_width * panel_space; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); item_spacing = 0; if (modify) { layout->row.item_offset += w + spacing.x; layout->row.filled += layout->row.item_width; layout->row.index = 0; } } break; case NK_LAYOUT_DYNAMIC_FREE: { /* panel width depended free widget placing */ bounds->x = layout->at_x + (layout->bounds.w * layout->row.item.x); bounds->x -= (float)*layout->offset_x; bounds->y = layout->at_y + (layout->row.height * layout->row.item.y); bounds->y -= (float)*layout->offset_y; bounds->w = layout->bounds.w * layout->row.item.w + NK_FRAC(bounds->x); bounds->h = layout->row.height * layout->row.item.h + NK_FRAC(bounds->y); return; } case NK_LAYOUT_DYNAMIC: { /* scaling arrays of panel width ratios for every widget */ float ratio, w; NK_ASSERT(layout->row.ratio); ratio = (layout->row.ratio[layout->row.index] < 0) ? layout->row.item_width : layout->row.ratio[layout->row.index]; w = (ratio * panel_space); item_spacing = (float)layout->row.index * spacing.x; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); if (modify) { layout->row.item_offset += w; layout->row.filled += ratio; } } break; case NK_LAYOUT_STATIC_FIXED: { /* non-scaling fixed widgets item width */ item_width = layout->row.item_width; item_offset = (float)layout->row.index * item_width; item_spacing = (float)layout->row.index * spacing.x; } break; case NK_LAYOUT_STATIC_ROW: { /* scaling single ratio widget width */ item_width = layout->row.item_width; item_offset = layout->row.item_offset; item_spacing = (float)layout->row.index * spacing.x; if (modify) layout->row.item_offset += item_width; } break; case NK_LAYOUT_STATIC_FREE: { /* free widget placing */ bounds->x = layout->at_x + layout->row.item.x; bounds->w = layout->row.item.w; if (((bounds->x + bounds->w) > layout->max_x) && modify) layout->max_x = (bounds->x + bounds->w); bounds->x -= (float)*layout->offset_x; bounds->y = layout->at_y + layout->row.item.y; bounds->y -= (float)*layout->offset_y; bounds->h = layout->row.item.h; return; } case NK_LAYOUT_STATIC: { /* non-scaling array of panel pixel width for every widget */ item_spacing = (float)layout->row.index * spacing.x; item_width = layout->row.ratio[layout->row.index]; item_offset = layout->row.item_offset; if (modify) layout->row.item_offset += item_width; } break; case NK_LAYOUT_TEMPLATE: { /* stretchy row layout with combined dynamic/static widget width*/ float w; NK_ASSERT(layout->row.index < layout->row.columns); NK_ASSERT(layout->row.index < NK_MAX_LAYOUT_ROW_TEMPLATE_COLUMNS); w = layout->row.templates[layout->row.index]; item_offset = layout->row.item_offset; item_width = w + NK_FRAC(item_offset); item_spacing = (float)layout->row.index * spacing.x; if (modify) layout->row.item_offset += w; } break; #undef NK_FRAC default: NK_ASSERT(0); break; }; /* set the bounds of the newly allocated widget */ bounds->w = item_width; bounds->h = layout->row.height - spacing.y; bounds->y = layout->at_y - (float)*layout->offset_y; bounds->x = layout->at_x + item_offset + item_spacing + padding.x; if (((bounds->x + bounds->w) > layout->max_x) && modify) layout->max_x = bounds->x + bounds->w; bounds->x -= (float)*layout->offset_x; } NK_LIB void nk_panel_alloc_space(struct nk_rect *bounds, const struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* check if the end of the row has been hit and begin new row if so */ win = ctx->current; layout = win->layout; if (layout->row.index >= layout->row.columns) nk_panel_alloc_row(ctx, win); /* calculate widget position and size */ nk_layout_widget_space(bounds, ctx, win, nk_true); layout->row.index++; } NK_LIB void nk_layout_peek(struct nk_rect *bounds, struct nk_context *ctx) { float y; int index; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; y = layout->at_y; index = layout->row.index; if (layout->row.index >= layout->row.columns) { layout->at_y += layout->row.height; layout->row.index = 0; } nk_layout_widget_space(bounds, ctx, win, nk_false); if (!layout->row.index) { bounds->x -= layout->row.item_offset; } layout->at_y = y; layout->row.index = index; } ================================================ FILE: src/nuklear_list_view.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * LIST VIEW * * ===============================================================*/ NK_API int nk_list_view_begin(struct nk_context *ctx, struct nk_list_view *view, const char *title, nk_flags flags, int row_height, int row_count) { int title_len; nk_hash title_hash; nk_uint *x_offset; nk_uint *y_offset; int result; struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_vec2 item_spacing; NK_ASSERT(ctx); NK_ASSERT(view); NK_ASSERT(title); if (!ctx || !view || !title) return 0; win = ctx->current; style = &ctx->style; item_spacing = style->window.spacing; row_height += NK_MAX(0, (int)item_spacing.y); /* find persistent list view scrollbar offset */ title_len = (int)nk_strlen(title); title_hash = nk_murmur_hash(title, (int)title_len, NK_PANEL_GROUP); x_offset = nk_find_value(win, title_hash); if (!x_offset) { x_offset = nk_add_value(ctx, win, title_hash, 0); y_offset = nk_add_value(ctx, win, title_hash+1, 0); NK_ASSERT(x_offset); NK_ASSERT(y_offset); if (!x_offset || !y_offset) return 0; *x_offset = *y_offset = 0; } else y_offset = nk_find_value(win, title_hash+1); view->scroll_value = *y_offset; view->scroll_pointer = y_offset; *y_offset = 0; result = nk_group_scrolled_offset_begin(ctx, x_offset, y_offset, title, flags); win = ctx->current; layout = win->layout; view->total_height = row_height * NK_MAX(row_count,1); view->begin = (int)NK_MAX(((float)view->scroll_value / (float)row_height), 0.0f); view->count = (int)NK_MAX(nk_iceilf((layout->clip.h)/(float)row_height),0); view->count = NK_MIN(view->count, row_count - view->begin); view->end = view->begin + view->count; view->ctx = ctx; return result; } NK_API void nk_list_view_end(struct nk_list_view *view) { struct nk_context *ctx; struct nk_window *win; struct nk_panel *layout; NK_ASSERT(view); NK_ASSERT(view->ctx); NK_ASSERT(view->scroll_pointer); if (!view || !view->ctx) return; ctx = view->ctx; win = ctx->current; layout = win->layout; layout->at_y = layout->bounds.y + (float)view->total_height; *view->scroll_pointer = *view->scroll_pointer + view->scroll_value; nk_group_end(view->ctx); } ================================================ FILE: src/nuklear_math.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * MATH * * ===============================================================*/ /* Since nuklear is supposed to work on all systems providing floating point math without any dependencies I also had to implement my own math functions for sqrt, sin and cos. Since the actual highly accurate implementations for the standard library functions are quite complex and I do not need high precision for my use cases I use approximations. Sqrt ---- For square root nuklear uses the famous fast inverse square root: https://en.wikipedia.org/wiki/Fast_inverse_square_root with slightly tweaked magic constant. While on today's hardware it is probably not faster it is still fast and accurate enough for nuklear's use cases. IMPORTANT: this requires float format IEEE 754 Sine/Cosine ----------- All constants inside both function are generated Remez's minimax approximations for value range 0...2*PI. The reason why I decided to approximate exactly that range is that nuklear only needs sine and cosine to generate circles which only requires that exact range. In addition I used Remez instead of Taylor for additional precision: www.lolengine.net/blog/2011/12/21/better-function-approximations. The tool I used to generate constants for both sine and cosine (it can actually approximate a lot more functions) can be found here: www.lolengine.net/wiki/oss/lolremez */ NK_LIB float nk_inv_sqrt(float n) { float x2; const float threehalfs = 1.5f; union {nk_uint i; float f;} conv = {0}; conv.f = n; x2 = n * 0.5f; conv.i = 0x5f375A84 - (conv.i >> 1); conv.f = conv.f * (threehalfs - (x2 * conv.f * conv.f)); return conv.f; } NK_LIB float nk_sqrt(float x) { return x * nk_inv_sqrt(x); } NK_LIB float nk_sin(float x) { NK_STORAGE const float a0 = +1.91059300966915117e-31f; NK_STORAGE const float a1 = +1.00086760103908896f; NK_STORAGE const float a2 = -1.21276126894734565e-2f; NK_STORAGE const float a3 = -1.38078780785773762e-1f; NK_STORAGE const float a4 = -2.67353392911981221e-2f; NK_STORAGE const float a5 = +2.08026600266304389e-2f; NK_STORAGE const float a6 = -3.03996055049204407e-3f; NK_STORAGE const float a7 = +1.38235642404333740e-4f; return a0 + x*(a1 + x*(a2 + x*(a3 + x*(a4 + x*(a5 + x*(a6 + x*a7)))))); } NK_LIB float nk_cos(float x) { // New implementation. Also generated using lolremez. // Old version significantly deviated from expected results. NK_STORAGE const float a0 = 9.9995999154986614e-1f; NK_STORAGE const float a1 = 1.2548995793001028e-3f; NK_STORAGE const float a2 = -5.0648546280678015e-1f; NK_STORAGE const float a3 = 1.2942246466519995e-2f; NK_STORAGE const float a4 = 2.8668384702547972e-2f; NK_STORAGE const float a5 = 7.3726485210586547e-3f; NK_STORAGE const float a6 = -3.8510875386947414e-3f; NK_STORAGE const float a7 = 4.7196604604366623e-4f; NK_STORAGE const float a8 = -1.8776444013090451e-5f; return a0 + x*(a1 + x*(a2 + x*(a3 + x*(a4 + x*(a5 + x*(a6 + x*(a7 + x*a8))))))); } NK_LIB nk_uint nk_round_up_pow2(nk_uint v) { v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; return v; } NK_LIB double nk_pow(double x, int n) { /* check the sign of n */ double r = 1; int plus = n >= 0; n = (plus) ? n : -n; while (n > 0) { if ((n & 1) == 1) r *= x; n /= 2; x *= x; } return plus ? r : 1.0 / r; } NK_LIB int nk_ifloord(double x) { x = (double)((int)x - ((x < 0.0) ? 1 : 0)); return (int)x; } NK_LIB int nk_ifloorf(float x) { x = (float)((int)x - ((x < 0.0f) ? 1 : 0)); return (int)x; } NK_LIB int nk_iceilf(float x) { if (x >= 0) { int i = (int)x; return (x > i) ? i+1: i; } else { int t = (int)x; float r = x - (float)t; return (r > 0.0f) ? t+1: t; } } NK_LIB int nk_log10(double n) { int neg; int ret; int exp = 0; neg = (n < 0) ? 1 : 0; ret = (neg) ? (int)-n : (int)n; while ((ret / 10) > 0) { ret /= 10; exp++; } if (neg) exp = -exp; return exp; } NK_API struct nk_rect nk_get_null_rect(void) { return nk_null_rect; } NK_API struct nk_rect nk_rect(float x, float y, float w, float h) { struct nk_rect r; r.x = x; r.y = y; r.w = w; r.h = h; return r; } NK_API struct nk_rect nk_recti(int x, int y, int w, int h) { struct nk_rect r; r.x = (float)x; r.y = (float)y; r.w = (float)w; r.h = (float)h; return r; } NK_API struct nk_rect nk_recta(struct nk_vec2 pos, struct nk_vec2 size) { return nk_rect(pos.x, pos.y, size.x, size.y); } NK_API struct nk_rect nk_rectv(const float *r) { return nk_rect(r[0], r[1], r[2], r[3]); } NK_API struct nk_rect nk_rectiv(const int *r) { return nk_recti(r[0], r[1], r[2], r[3]); } NK_API struct nk_vec2 nk_rect_pos(struct nk_rect r) { struct nk_vec2 ret; ret.x = r.x; ret.y = r.y; return ret; } NK_API struct nk_vec2 nk_rect_size(struct nk_rect r) { struct nk_vec2 ret; ret.x = r.w; ret.y = r.h; return ret; } NK_LIB struct nk_rect nk_shrink_rect(struct nk_rect r, float amount) { struct nk_rect res; r.w = NK_MAX(r.w, 2 * amount); r.h = NK_MAX(r.h, 2 * amount); res.x = r.x + amount; res.y = r.y + amount; res.w = r.w - 2 * amount; res.h = r.h - 2 * amount; return res; } NK_LIB struct nk_rect nk_pad_rect(struct nk_rect r, struct nk_vec2 pad) { r.w = NK_MAX(r.w, 2 * pad.x); r.h = NK_MAX(r.h, 2 * pad.y); r.x += pad.x; r.y += pad.y; r.w -= 2 * pad.x; r.h -= 2 * pad.y; return r; } NK_API struct nk_vec2 nk_vec2(float x, float y) { struct nk_vec2 ret; ret.x = x; ret.y = y; return ret; } NK_API struct nk_vec2 nk_vec2i(int x, int y) { struct nk_vec2 ret; ret.x = (float)x; ret.y = (float)y; return ret; } NK_API struct nk_vec2 nk_vec2v(const float *v) { return nk_vec2(v[0], v[1]); } NK_API struct nk_vec2 nk_vec2iv(const int *v) { return nk_vec2i(v[0], v[1]); } NK_LIB void nk_unify(struct nk_rect *clip, const struct nk_rect *a, float x0, float y0, float x1, float y1) { NK_ASSERT(a); NK_ASSERT(clip); clip->x = NK_MAX(a->x, x0); clip->y = NK_MAX(a->y, y0); clip->w = NK_MIN(a->x + a->w, x1) - clip->x; clip->h = NK_MIN(a->y + a->h, y1) - clip->y; clip->w = NK_MAX(0, clip->w); clip->h = NK_MAX(0, clip->h); } NK_API void nk_triangle_from_direction(struct nk_vec2 *result, struct nk_rect r, float pad_x, float pad_y, enum nk_heading direction) { float w_half, h_half; NK_ASSERT(result); r.w = NK_MAX(2 * pad_x, r.w); r.h = NK_MAX(2 * pad_y, r.h); r.w = r.w - 2 * pad_x; r.h = r.h - 2 * pad_y; r.x = r.x + pad_x; r.y = r.y + pad_y; w_half = r.w / 2.0f; h_half = r.h / 2.0f; if (direction == NK_UP) { result[0] = nk_vec2(r.x + w_half, r.y); result[1] = nk_vec2(r.x + r.w, r.y + r.h); result[2] = nk_vec2(r.x, r.y + r.h); } else if (direction == NK_RIGHT) { result[0] = nk_vec2(r.x, r.y); result[1] = nk_vec2(r.x + r.w, r.y + h_half); result[2] = nk_vec2(r.x, r.y + r.h); } else if (direction == NK_DOWN) { result[0] = nk_vec2(r.x, r.y); result[1] = nk_vec2(r.x + r.w, r.y); result[2] = nk_vec2(r.x + w_half, r.y + r.h); } else { result[0] = nk_vec2(r.x, r.y + h_half); result[1] = nk_vec2(r.x + r.w, r.y); result[2] = nk_vec2(r.x + r.w, r.y + r.h); } } ================================================ FILE: src/nuklear_menu.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * MENU * * ===============================================================*/ NK_API void nk_menubar_begin(struct nk_context *ctx) { struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; layout = ctx->current->layout; NK_ASSERT(layout->at_y == layout->bounds.y); /* if this assert triggers you allocated space between nk_begin and nk_menubar_begin. If you want a menubar the first nuklear function after `nk_begin` has to be a `nk_menubar_begin` call. Inside the menubar you then have to allocate space for widgets (also supports multiple rows). Example: if (nk_begin(...)) { nk_menubar_begin(...); nk_layout_xxxx(...); nk_button(...); nk_layout_xxxx(...); nk_button(...); nk_menubar_end(...); } nk_end(...); */ if (layout->flags & NK_WINDOW_HIDDEN || layout->flags & NK_WINDOW_MINIMIZED) return; layout->menu.x = layout->at_x; layout->menu.y = layout->at_y + layout->row.height; layout->menu.w = layout->bounds.w; layout->menu.offset.x = *layout->offset_x; layout->menu.offset.y = *layout->offset_y; *layout->offset_y = 0; } NK_API void nk_menubar_end(struct nk_context *ctx) { struct nk_window *win; struct nk_panel *layout; struct nk_command_buffer *out; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; out = &win->buffer; layout = win->layout; if (layout->flags & NK_WINDOW_HIDDEN || layout->flags & NK_WINDOW_MINIMIZED) return; layout->menu.h = layout->at_y - layout->menu.y; layout->bounds.y += layout->menu.h + ctx->style.window.spacing.y + layout->row.height; layout->bounds.h -= layout->menu.h + ctx->style.window.spacing.y + layout->row.height; *layout->offset_x = layout->menu.offset.x; *layout->offset_y = layout->menu.offset.y; layout->at_y = layout->bounds.y - layout->row.height; layout->clip.y = layout->bounds.y; layout->clip.h = layout->bounds.h; nk_push_scissor(out, layout->clip); } NK_INTERN int nk_menu_begin(struct nk_context *ctx, struct nk_window *win, const char *id, int is_clicked, struct nk_rect header, struct nk_vec2 size) { int is_open = 0; int is_active = 0; struct nk_rect body; struct nk_window *popup; nk_hash hash = nk_murmur_hash(id, (int)nk_strlen(id), NK_PANEL_MENU); NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; body.x = header.x; body.w = size.x; body.y = header.y + header.h; body.h = size.y; popup = win->popup.win; is_open = popup ? nk_true : nk_false; is_active = (popup && (win->popup.name == hash) && win->popup.type == NK_PANEL_MENU); if ((is_clicked && is_open && !is_active) || (is_open && !is_active) || (!is_open && !is_active && !is_clicked)) return 0; if (!nk_nonblock_begin(ctx, NK_WINDOW_NO_SCROLLBAR, body, header, NK_PANEL_MENU)) return 0; win->popup.type = NK_PANEL_MENU; win->popup.name = hash; return 1; } NK_API int nk_menu_begin_text(struct nk_context *ctx, const char *title, int len, nk_flags align, struct nk_vec2 size) { struct nk_window *win; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text(&ctx->last_widget_state, &win->buffer, header, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in, ctx->style.font)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_label(struct nk_context *ctx, const char *text, nk_flags align, struct nk_vec2 size) { return nk_menu_begin_text(ctx, text, nk_strlen(text), align, size); } NK_API int nk_menu_begin_image(struct nk_context *ctx, const char *id, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_image(&ctx->last_widget_state, &win->buffer, header, img, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, id, is_clicked, header, size); } NK_API int nk_menu_begin_symbol(struct nk_context *ctx, const char *id, enum nk_symbol_type sym, struct nk_vec2 size) { struct nk_window *win; const struct nk_input *in; struct nk_rect header; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_symbol(&ctx->last_widget_state, &win->buffer, header, sym, NK_BUTTON_DEFAULT, &ctx->style.menu_button, in, ctx->style.font)) is_clicked = nk_true; return nk_menu_begin(ctx, win, id, is_clicked, header, size); } NK_API int nk_menu_begin_image_text(struct nk_context *ctx, const char *title, int len, nk_flags align, struct nk_image img, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_image(&ctx->last_widget_state, &win->buffer, header, img, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, ctx->style.font, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_image_label(struct nk_context *ctx, const char *title, nk_flags align, struct nk_image img, struct nk_vec2 size) { return nk_menu_begin_image_text(ctx, title, nk_strlen(title), align, img, size); } NK_API int nk_menu_begin_symbol_text(struct nk_context *ctx, const char *title, int len, nk_flags align, enum nk_symbol_type sym, struct nk_vec2 size) { struct nk_window *win; struct nk_rect header; const struct nk_input *in; int is_clicked = nk_false; nk_flags state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; state = nk_widget(&header, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || win->layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; if (nk_do_button_text_symbol(&ctx->last_widget_state, &win->buffer, header, sym, title, len, align, NK_BUTTON_DEFAULT, &ctx->style.menu_button, ctx->style.font, in)) is_clicked = nk_true; return nk_menu_begin(ctx, win, title, is_clicked, header, size); } NK_API int nk_menu_begin_symbol_label(struct nk_context *ctx, const char *title, nk_flags align, enum nk_symbol_type sym, struct nk_vec2 size ) { return nk_menu_begin_symbol_text(ctx, title, nk_strlen(title), align,sym,size); } NK_API int nk_menu_item_text(struct nk_context *ctx, const char *title, int len, nk_flags align) { return nk_contextual_item_text(ctx, title, len, align); } NK_API int nk_menu_item_label(struct nk_context *ctx, const char *label, nk_flags align) { return nk_contextual_item_label(ctx, label, align); } NK_API int nk_menu_item_image_label(struct nk_context *ctx, struct nk_image img, const char *label, nk_flags align) { return nk_contextual_item_image_label(ctx, img, label, align); } NK_API int nk_menu_item_image_text(struct nk_context *ctx, struct nk_image img, const char *text, int len, nk_flags align) { return nk_contextual_item_image_text(ctx, img, text, len, align); } NK_API int nk_menu_item_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *text, int len, nk_flags align) { return nk_contextual_item_symbol_text(ctx, sym, text, len, align); } NK_API int nk_menu_item_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *label, nk_flags align) { return nk_contextual_item_symbol_label(ctx, sym, label, align); } NK_API void nk_menu_close(struct nk_context *ctx) { nk_contextual_close(ctx); } NK_API void nk_menu_end(struct nk_context *ctx) { nk_contextual_end(ctx); } ================================================ FILE: src/nuklear_page_element.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * PAGE ELEMENT * * ===============================================================*/ NK_LIB struct nk_page_element* nk_create_page_element(struct nk_context *ctx) { struct nk_page_element *elem; if (ctx->freelist) { /* unlink page element from free list */ elem = ctx->freelist; ctx->freelist = elem->next; } else if (ctx->use_pool) { /* allocate page element from memory pool */ elem = nk_pool_alloc(&ctx->pool); NK_ASSERT(elem); if (!elem) return 0; } else { /* allocate new page element from back of fixed size memory buffer */ NK_STORAGE const nk_size size = sizeof(struct nk_page_element); NK_STORAGE const nk_size align = NK_ALIGNOF(struct nk_page_element); elem = (struct nk_page_element*)nk_buffer_alloc(&ctx->memory, NK_BUFFER_BACK, size, align); NK_ASSERT(elem); if (!elem) return 0; } nk_zero_struct(*elem); elem->next = 0; elem->prev = 0; return elem; } NK_LIB void nk_link_page_element_into_freelist(struct nk_context *ctx, struct nk_page_element *elem) { /* link table into freelist */ if (!ctx->freelist) { ctx->freelist = elem; } else { elem->next = ctx->freelist; ctx->freelist = elem; } } NK_LIB void nk_free_page_element(struct nk_context *ctx, struct nk_page_element *elem) { /* we have a pool so just add to free list */ if (ctx->use_pool) { nk_link_page_element_into_freelist(ctx, elem); return; } /* if possible remove last element from back of fixed memory buffer */ {void *elem_end = (void*)(elem + 1); void *buffer_end = (nk_byte*)ctx->memory.memory.ptr + ctx->memory.size; if (elem_end == buffer_end) ctx->memory.size -= sizeof(struct nk_page_element); else nk_link_page_element_into_freelist(ctx, elem);} } ================================================ FILE: src/nuklear_panel.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * PANEL * * ===============================================================*/ NK_LIB void* nk_create_panel(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; nk_zero_struct(*elem); return &elem->data.pan; } NK_LIB void nk_free_panel(struct nk_context *ctx, struct nk_panel *pan) { union nk_page_data *pd = NK_CONTAINER_OF(pan, union nk_page_data, pan); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe); } NK_LIB int nk_panel_has_header(nk_flags flags, const char *title) { int active = 0; active = (flags & (NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE)); active = active || (flags & NK_WINDOW_TITLE); active = active && !(flags & NK_WINDOW_HIDDEN) && title; return active; } NK_LIB struct nk_vec2 nk_panel_get_padding(const struct nk_style *style, enum nk_panel_type type) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.padding; case NK_PANEL_GROUP: return style->window.group_padding; case NK_PANEL_POPUP: return style->window.popup_padding; case NK_PANEL_CONTEXTUAL: return style->window.contextual_padding; case NK_PANEL_COMBO: return style->window.combo_padding; case NK_PANEL_MENU: return style->window.menu_padding; case NK_PANEL_TOOLTIP: return style->window.menu_padding;} } NK_LIB float nk_panel_get_border(const struct nk_style *style, nk_flags flags, enum nk_panel_type type) { if (flags & NK_WINDOW_BORDER) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.border; case NK_PANEL_GROUP: return style->window.group_border; case NK_PANEL_POPUP: return style->window.popup_border; case NK_PANEL_CONTEXTUAL: return style->window.contextual_border; case NK_PANEL_COMBO: return style->window.combo_border; case NK_PANEL_MENU: return style->window.menu_border; case NK_PANEL_TOOLTIP: return style->window.menu_border; }} else return 0; } NK_LIB struct nk_color nk_panel_get_border_color(const struct nk_style *style, enum nk_panel_type type) { switch (type) { default: case NK_PANEL_WINDOW: return style->window.border_color; case NK_PANEL_GROUP: return style->window.group_border_color; case NK_PANEL_POPUP: return style->window.popup_border_color; case NK_PANEL_CONTEXTUAL: return style->window.contextual_border_color; case NK_PANEL_COMBO: return style->window.combo_border_color; case NK_PANEL_MENU: return style->window.menu_border_color; case NK_PANEL_TOOLTIP: return style->window.menu_border_color;} } NK_LIB int nk_panel_is_sub(enum nk_panel_type type) { return (type & NK_PANEL_SET_SUB)?1:0; } NK_LIB int nk_panel_is_nonblock(enum nk_panel_type type) { return (type & NK_PANEL_SET_NONBLOCK)?1:0; } NK_LIB int nk_panel_begin(struct nk_context *ctx, const char *title, enum nk_panel_type panel_type) { struct nk_input *in; struct nk_window *win; struct nk_panel *layout; struct nk_command_buffer *out; const struct nk_style *style; const struct nk_user_font *font; struct nk_vec2 scrollbar_size; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; nk_zero(ctx->current->layout, sizeof(*ctx->current->layout)); if ((ctx->current->flags & NK_WINDOW_HIDDEN) || (ctx->current->flags & NK_WINDOW_CLOSED)) { nk_zero(ctx->current->layout, sizeof(struct nk_panel)); ctx->current->layout->type = panel_type; return 0; } /* pull state into local stack */ style = &ctx->style; font = style->font; win = ctx->current; layout = win->layout; out = &win->buffer; in = (win->flags & NK_WINDOW_NO_INPUT) ? 0: &ctx->input; #ifdef NK_INCLUDE_COMMAND_USERDATA win->buffer.userdata = ctx->userdata; #endif /* pull style configuration into local stack */ scrollbar_size = style->window.scrollbar_size; panel_padding = nk_panel_get_padding(style, panel_type); /* window movement */ if ((win->flags & NK_WINDOW_MOVABLE) && !(win->flags & NK_WINDOW_ROM)) { int left_mouse_down; int left_mouse_clicked; int left_mouse_click_in_cursor; /* calculate draggable window space */ struct nk_rect header; header.x = win->bounds.x; header.y = win->bounds.y; header.w = win->bounds.w; if (nk_panel_has_header(win->flags, title)) { header.h = font->height + 2.0f * style->window.header.padding.y; header.h += 2.0f * style->window.header.label_padding.y; } else header.h = panel_padding.y; /* window movement by dragging */ left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_clicked = (int)in->mouse.buttons[NK_BUTTON_LEFT].clicked; left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, header, nk_true); if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) { win->bounds.x = win->bounds.x + in->mouse.delta.x; win->bounds.y = win->bounds.y + in->mouse.delta.y; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x += in->mouse.delta.x; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y += in->mouse.delta.y; ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_MOVE]; } } /* setup panel */ layout->type = panel_type; layout->flags = win->flags; layout->bounds = win->bounds; layout->bounds.x += panel_padding.x; layout->bounds.w -= 2*panel_padding.x; if (win->flags & NK_WINDOW_BORDER) { layout->border = nk_panel_get_border(style, win->flags, panel_type); layout->bounds = nk_shrink_rect(layout->bounds, layout->border); } else layout->border = 0; layout->at_y = layout->bounds.y; layout->at_x = layout->bounds.x; layout->max_x = 0; layout->header_height = 0; layout->footer_height = 0; nk_layout_reset_min_row_height(ctx); layout->row.index = 0; layout->row.columns = 0; layout->row.ratio = 0; layout->row.item_width = 0; layout->row.tree_depth = 0; layout->row.height = panel_padding.y; layout->has_scrolling = nk_true; if (!(win->flags & NK_WINDOW_NO_SCROLLBAR)) layout->bounds.w -= scrollbar_size.x; if (!nk_panel_is_nonblock(panel_type)) { layout->footer_height = 0; if (!(win->flags & NK_WINDOW_NO_SCROLLBAR) || win->flags & NK_WINDOW_SCALABLE) layout->footer_height = scrollbar_size.y; layout->bounds.h -= layout->footer_height; } /* panel header */ if (nk_panel_has_header(win->flags, title)) { struct nk_text text; struct nk_rect header; const struct nk_style_item *background = 0; /* calculate header bounds */ header.x = win->bounds.x; header.y = win->bounds.y; header.w = win->bounds.w; header.h = font->height + 2.0f * style->window.header.padding.y; header.h += (2.0f * style->window.header.label_padding.y); /* shrink panel by header */ layout->header_height = header.h; layout->bounds.y += header.h; layout->bounds.h -= header.h; layout->at_y += header.h; /* select correct header background and text color */ if (ctx->active == win) { background = &style->window.header.active; text.text = style->window.header.label_active; } else if (nk_input_is_mouse_hovering_rect(&ctx->input, header)) { background = &style->window.header.hover; text.text = style->window.header.label_hover; } else { background = &style->window.header.normal; text.text = style->window.header.label_normal; } /* draw header background */ header.h += 1.0f; if (background->type == NK_STYLE_ITEM_IMAGE) { text.background = nk_rgba(0,0,0,0); nk_draw_image(&win->buffer, header, &background->data.image, nk_white); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, background->data.color); } /* window close button */ {struct nk_rect button; button.y = header.y + style->window.header.padding.y; button.h = header.h - 2 * style->window.header.padding.y; button.w = button.h; if (win->flags & NK_WINDOW_CLOSABLE) { nk_flags ws = 0; if (style->window.header.align == NK_HEADER_RIGHT) { button.x = (header.w + header.x) - (button.w + style->window.header.padding.x); header.w -= button.w + style->window.header.spacing.x + style->window.header.padding.x; } else { button.x = header.x + style->window.header.padding.x; header.x += button.w + style->window.header.spacing.x + style->window.header.padding.x; } if (nk_do_button_symbol(&ws, &win->buffer, button, style->window.header.close_symbol, NK_BUTTON_DEFAULT, &style->window.header.close_button, in, style->font) && !(win->flags & NK_WINDOW_ROM)) { layout->flags |= NK_WINDOW_HIDDEN; layout->flags &= (nk_flags)~NK_WINDOW_MINIMIZED; } } /* window minimize button */ if (win->flags & NK_WINDOW_MINIMIZABLE) { nk_flags ws = 0; if (style->window.header.align == NK_HEADER_RIGHT) { button.x = (header.w + header.x) - button.w; if (!(win->flags & NK_WINDOW_CLOSABLE)) { button.x -= style->window.header.padding.x; header.w -= style->window.header.padding.x; } header.w -= button.w + style->window.header.spacing.x; } else { button.x = header.x; header.x += button.w + style->window.header.spacing.x + style->window.header.padding.x; } if (nk_do_button_symbol(&ws, &win->buffer, button, (layout->flags & NK_WINDOW_MINIMIZED)? style->window.header.maximize_symbol: style->window.header.minimize_symbol, NK_BUTTON_DEFAULT, &style->window.header.minimize_button, in, style->font) && !(win->flags & NK_WINDOW_ROM)) layout->flags = (layout->flags & NK_WINDOW_MINIMIZED) ? layout->flags & (nk_flags)~NK_WINDOW_MINIMIZED: layout->flags | NK_WINDOW_MINIMIZED; }} {/* window header title */ int text_len = nk_strlen(title); struct nk_rect label = {0,0,0,0}; float t = font->width(font->userdata, font->height, title, text_len); text.padding = nk_vec2(0,0); label.x = header.x + style->window.header.padding.x; label.x += style->window.header.label_padding.x; label.y = header.y + style->window.header.label_padding.y; label.h = font->height + 2 * style->window.header.label_padding.y; label.w = t + 2 * style->window.header.spacing.x; label.w = NK_CLAMP(0, label.w, header.x + header.w - label.x); nk_widget_text(out, label,(const char*)title, text_len, &text, NK_TEXT_LEFT, font);} } /* draw window background */ if (!(layout->flags & NK_WINDOW_MINIMIZED) && !(layout->flags & NK_WINDOW_DYNAMIC)) { struct nk_rect body; body.x = win->bounds.x; body.w = win->bounds.w; body.y = (win->bounds.y + layout->header_height); body.h = (win->bounds.h - layout->header_height); if (style->window.fixed_background.type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, body, &style->window.fixed_background.data.image, nk_white); else nk_fill_rect(out, body, 0, style->window.fixed_background.data.color); } /* set clipping rectangle */ {struct nk_rect clip; layout->clip = layout->bounds; nk_unify(&clip, &win->buffer.clip, layout->clip.x, layout->clip.y, layout->clip.x + layout->clip.w, layout->clip.y + layout->clip.h); nk_push_scissor(out, clip); layout->clip = clip;} return !(layout->flags & NK_WINDOW_HIDDEN) && !(layout->flags & NK_WINDOW_MINIMIZED); } NK_LIB void nk_panel_end(struct nk_context *ctx) { struct nk_input *in; struct nk_window *window; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; struct nk_vec2 scrollbar_size; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; window = ctx->current; layout = window->layout; style = &ctx->style; out = &window->buffer; in = (layout->flags & NK_WINDOW_ROM || layout->flags & NK_WINDOW_NO_INPUT) ? 0 :&ctx->input; if (!nk_panel_is_sub(layout->type)) nk_push_scissor(out, nk_null_rect); /* cache configuration data */ scrollbar_size = style->window.scrollbar_size; panel_padding = nk_panel_get_padding(style, layout->type); /* update the current cursor Y-position to point over the last added widget */ layout->at_y += layout->row.height; /* dynamic panels */ if (layout->flags & NK_WINDOW_DYNAMIC && !(layout->flags & NK_WINDOW_MINIMIZED)) { /* update panel height to fit dynamic growth */ struct nk_rect empty_space; if (layout->at_y < (layout->bounds.y + layout->bounds.h)) layout->bounds.h = layout->at_y - layout->bounds.y; /* fill top empty space */ empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y; empty_space.h = panel_padding.y; empty_space.w = window->bounds.w; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill left empty space */ empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y; empty_space.w = panel_padding.x + layout->border; empty_space.h = layout->bounds.h; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill right empty space */ empty_space.x = layout->bounds.x + layout->bounds.w; empty_space.y = layout->bounds.y; empty_space.w = panel_padding.x + layout->border; empty_space.h = layout->bounds.h; if (*layout->offset_y == 0 && !(layout->flags & NK_WINDOW_NO_SCROLLBAR)) empty_space.w += scrollbar_size.x; nk_fill_rect(out, empty_space, 0, style->window.background); /* fill bottom empty space */ if (layout->footer_height > 0) { empty_space.x = window->bounds.x; empty_space.y = layout->bounds.y + layout->bounds.h; empty_space.w = window->bounds.w; empty_space.h = layout->footer_height; nk_fill_rect(out, empty_space, 0, style->window.background); } } /* scrollbars */ if (!(layout->flags & NK_WINDOW_NO_SCROLLBAR) && !(layout->flags & NK_WINDOW_MINIMIZED) && window->scrollbar_hiding_timer < NK_SCROLLBAR_HIDING_TIMEOUT) { struct nk_rect scroll; int scroll_has_scrolling; float scroll_target; float scroll_offset; float scroll_step; float scroll_inc; /* mouse wheel scrolling */ if (nk_panel_is_sub(layout->type)) { /* sub-window mouse wheel scrolling */ struct nk_window *root_window = window; struct nk_panel *root_panel = window->layout; while (root_panel->parent) root_panel = root_panel->parent; while (root_window->parent) root_window = root_window->parent; /* only allow scrolling if parent window is active */ scroll_has_scrolling = 0; if ((root_window == ctx->active) && layout->has_scrolling) { /* and panel is being hovered and inside clip rect*/ if (nk_input_is_mouse_hovering_rect(in, layout->bounds) && NK_INTERSECT(layout->bounds.x, layout->bounds.y, layout->bounds.w, layout->bounds.h, root_panel->clip.x, root_panel->clip.y, root_panel->clip.w, root_panel->clip.h)) { /* deactivate all parent scrolling */ root_panel = window->layout; while (root_panel->parent) { root_panel->has_scrolling = nk_false; root_panel = root_panel->parent; } root_panel->has_scrolling = nk_false; scroll_has_scrolling = nk_true; } } } else if (!nk_panel_is_sub(layout->type)) { /* window mouse wheel scrolling */ scroll_has_scrolling = (window == ctx->active) && layout->has_scrolling; if (in && (in->mouse.scroll_delta.y > 0 || in->mouse.scroll_delta.x > 0) && scroll_has_scrolling) window->scrolled = nk_true; else window->scrolled = nk_false; } else scroll_has_scrolling = nk_false; { /* vertical scrollbar */ nk_flags state = 0; scroll.x = layout->bounds.x + layout->bounds.w + panel_padding.x; scroll.y = layout->bounds.y; scroll.w = scrollbar_size.x; scroll.h = layout->bounds.h; scroll_offset = (float)*layout->offset_y; scroll_step = scroll.h * 0.10f; scroll_inc = scroll.h * 0.01f; scroll_target = (float)(int)(layout->at_y - scroll.y); scroll_offset = nk_do_scrollbarv(&state, out, scroll, scroll_has_scrolling, scroll_offset, scroll_target, scroll_step, scroll_inc, &ctx->style.scrollv, in, style->font); *layout->offset_y = (nk_uint)scroll_offset; if (in && scroll_has_scrolling) in->mouse.scroll_delta.y = 0; } { /* horizontal scrollbar */ nk_flags state = 0; scroll.x = layout->bounds.x; scroll.y = layout->bounds.y + layout->bounds.h; scroll.w = layout->bounds.w; scroll.h = scrollbar_size.y; scroll_offset = (float)*layout->offset_x; scroll_target = (float)(int)(layout->max_x - scroll.x); scroll_step = layout->max_x * 0.05f; scroll_inc = layout->max_x * 0.005f; scroll_offset = nk_do_scrollbarh(&state, out, scroll, scroll_has_scrolling, scroll_offset, scroll_target, scroll_step, scroll_inc, &ctx->style.scrollh, in, style->font); *layout->offset_x = (nk_uint)scroll_offset; } } /* hide scroll if no user input */ if (window->flags & NK_WINDOW_SCROLL_AUTO_HIDE) { int has_input = ctx->input.mouse.delta.x != 0 || ctx->input.mouse.delta.y != 0 || ctx->input.mouse.scroll_delta.y != 0; int is_window_hovered = nk_window_is_hovered(ctx); int any_item_active = (ctx->last_widget_state & NK_WIDGET_STATE_MODIFIED); if ((!has_input && is_window_hovered) || (!is_window_hovered && !any_item_active)) window->scrollbar_hiding_timer += ctx->delta_time_seconds; else window->scrollbar_hiding_timer = 0; } else window->scrollbar_hiding_timer = 0; /* window border */ if (layout->flags & NK_WINDOW_BORDER) { struct nk_color border_color = nk_panel_get_border_color(style, layout->type); const float padding_y = (layout->flags & NK_WINDOW_MINIMIZED) ? (style->window.border + window->bounds.y + layout->header_height) : ((layout->flags & NK_WINDOW_DYNAMIC) ? (layout->bounds.y + layout->bounds.h + layout->footer_height) : (window->bounds.y + window->bounds.h)); struct nk_rect b = window->bounds; b.h = padding_y - window->bounds.y; nk_stroke_rect(out, b, 0, layout->border, border_color); } /* scaler */ if ((layout->flags & NK_WINDOW_SCALABLE) && in && !(layout->flags & NK_WINDOW_MINIMIZED)) { /* calculate scaler bounds */ struct nk_rect scaler; scaler.w = scrollbar_size.x; scaler.h = scrollbar_size.y; scaler.y = layout->bounds.y + layout->bounds.h; if (layout->flags & NK_WINDOW_SCALE_LEFT) scaler.x = layout->bounds.x - panel_padding.x * 0.5f; else scaler.x = layout->bounds.x + layout->bounds.w + panel_padding.x; if (layout->flags & NK_WINDOW_NO_SCROLLBAR) scaler.x -= scaler.w; /* draw scaler */ {const struct nk_style_item *item = &style->window.scaler; if (item->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, scaler, &item->data.image, nk_white); else { if (layout->flags & NK_WINDOW_SCALE_LEFT) { nk_fill_triangle(out, scaler.x, scaler.y, scaler.x, scaler.y + scaler.h, scaler.x + scaler.w, scaler.y + scaler.h, item->data.color); } else { nk_fill_triangle(out, scaler.x + scaler.w, scaler.y, scaler.x + scaler.w, scaler.y + scaler.h, scaler.x, scaler.y + scaler.h, item->data.color); } }} /* do window scaling */ if (!(window->flags & NK_WINDOW_ROM)) { struct nk_vec2 window_size = style->window.min_size; int left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; int left_mouse_click_in_scaler = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, scaler, nk_true); if (left_mouse_down && left_mouse_click_in_scaler) { float delta_x = in->mouse.delta.x; if (layout->flags & NK_WINDOW_SCALE_LEFT) { delta_x = -delta_x; window->bounds.x += in->mouse.delta.x; } /* dragging in x-direction */ if (window->bounds.w + delta_x >= window_size.x) { if ((delta_x < 0) || (delta_x > 0 && in->mouse.pos.x >= scaler.x)) { window->bounds.w = window->bounds.w + delta_x; scaler.x += in->mouse.delta.x; } } /* dragging in y-direction (only possible if static window) */ if (!(layout->flags & NK_WINDOW_DYNAMIC)) { if (window_size.y < window->bounds.h + in->mouse.delta.y) { if ((in->mouse.delta.y < 0) || (in->mouse.delta.y > 0 && in->mouse.pos.y >= scaler.y)) { window->bounds.h = window->bounds.h + in->mouse.delta.y; scaler.y += in->mouse.delta.y; } } } ctx->style.cursor_active = ctx->style.cursors[NK_CURSOR_RESIZE_TOP_RIGHT_DOWN_LEFT]; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = scaler.x + scaler.w/2.0f; in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y = scaler.y + scaler.h/2.0f; } } } if (!nk_panel_is_sub(layout->type)) { /* window is hidden so clear command buffer */ if (layout->flags & NK_WINDOW_HIDDEN) nk_command_buffer_reset(&window->buffer); /* window is visible and not tab */ else nk_finish(ctx, window); } /* NK_WINDOW_REMOVE_ROM flag was set so remove NK_WINDOW_ROM */ if (layout->flags & NK_WINDOW_REMOVE_ROM) { layout->flags &= ~(nk_flags)NK_WINDOW_ROM; layout->flags &= ~(nk_flags)NK_WINDOW_REMOVE_ROM; } window->flags = layout->flags; /* property garbage collector */ if (window->property.active && window->property.old != window->property.seq && window->property.active == window->property.prev) { nk_zero(&window->property, sizeof(window->property)); } else { window->property.old = window->property.seq; window->property.prev = window->property.active; window->property.seq = 0; } /* edit garbage collector */ if (window->edit.active && window->edit.old != window->edit.seq && window->edit.active == window->edit.prev) { nk_zero(&window->edit, sizeof(window->edit)); } else { window->edit.old = window->edit.seq; window->edit.prev = window->edit.active; window->edit.seq = 0; } /* contextual garbage collector */ if (window->popup.active_con && window->popup.con_old != window->popup.con_count) { window->popup.con_count = 0; window->popup.con_old = 0; window->popup.active_con = 0; } else { window->popup.con_old = window->popup.con_count; window->popup.con_count = 0; } window->popup.combo_count = 0; /* helper to make sure you have a 'nk_tree_push' for every 'nk_tree_pop' */ NK_ASSERT(!layout->row.tree_depth); } ================================================ FILE: src/nuklear_pool.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * POOL * * ===============================================================*/ NK_LIB void nk_pool_init(struct nk_pool *pool, struct nk_allocator *alloc, unsigned int capacity) { nk_zero(pool, sizeof(*pool)); pool->alloc = *alloc; pool->capacity = capacity; pool->type = NK_BUFFER_DYNAMIC; pool->pages = 0; } NK_LIB void nk_pool_free(struct nk_pool *pool) { struct nk_page *iter = pool->pages; if (!pool) return; if (pool->type == NK_BUFFER_FIXED) return; while (iter) { struct nk_page *next = iter->next; pool->alloc.free(pool->alloc.userdata, iter); iter = next; } } NK_LIB void nk_pool_init_fixed(struct nk_pool *pool, void *memory, nk_size size) { nk_zero(pool, sizeof(*pool)); NK_ASSERT(size >= sizeof(struct nk_page)); if (size < sizeof(struct nk_page)) return; pool->capacity = (unsigned)(size - sizeof(struct nk_page)) / sizeof(struct nk_page_element); pool->pages = (struct nk_page*)memory; pool->type = NK_BUFFER_FIXED; pool->size = size; } NK_LIB struct nk_page_element* nk_pool_alloc(struct nk_pool *pool) { if (!pool->pages || pool->pages->size >= pool->capacity) { /* allocate new page */ struct nk_page *page; if (pool->type == NK_BUFFER_FIXED) { NK_ASSERT(pool->pages); if (!pool->pages) return 0; NK_ASSERT(pool->pages->size < pool->capacity); return 0; } else { nk_size size = sizeof(struct nk_page); size += NK_POOL_DEFAULT_CAPACITY * sizeof(union nk_page_data); page = (struct nk_page*)pool->alloc.alloc(pool->alloc.userdata,0, size); page->next = pool->pages; pool->pages = page; page->size = 0; } } return &pool->pages->win[pool->pages->size++]; } ================================================ FILE: src/nuklear_popup.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * POPUP * * ===============================================================*/ NK_API int nk_popup_begin(struct nk_context *ctx, enum nk_popup_type type, const char *title, nk_flags flags, struct nk_rect rect) { struct nk_window *popup; struct nk_window *win; struct nk_panel *panel; int title_len; nk_hash title_hash; nk_size allocated; NK_ASSERT(ctx); NK_ASSERT(title); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; win = ctx->current; panel = win->layout; NK_ASSERT(!(panel->type & NK_PANEL_SET_POPUP) && "popups are not allowed to have popups"); (void)panel; title_len = (int)nk_strlen(title); title_hash = nk_murmur_hash(title, (int)title_len, NK_PANEL_POPUP); popup = win->popup.win; if (!popup) { popup = (struct nk_window*)nk_create_window(ctx); popup->parent = win; win->popup.win = popup; win->popup.active = 0; win->popup.type = NK_PANEL_POPUP; } /* make sure we have correct popup */ if (win->popup.name != title_hash) { if (!win->popup.active) { nk_zero(popup, sizeof(*popup)); win->popup.name = title_hash; win->popup.active = 1; win->popup.type = NK_PANEL_POPUP; } else return 0; } /* popup position is local to window */ ctx->current = popup; rect.x += win->layout->clip.x; rect.y += win->layout->clip.y; /* setup popup data */ popup->parent = win; popup->bounds = rect; popup->seq = ctx->seq; popup->layout = (struct nk_panel*)nk_create_panel(ctx); popup->flags = flags; popup->flags |= NK_WINDOW_BORDER; if (type == NK_POPUP_DYNAMIC) popup->flags |= NK_WINDOW_DYNAMIC; popup->buffer = win->buffer; nk_start_popup(ctx, win); allocated = ctx->memory.allocated; nk_push_scissor(&popup->buffer, nk_null_rect); if (nk_panel_begin(ctx, title, NK_PANEL_POPUP)) { /* popup is running therefore invalidate parent panels */ struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_ROM; root->flags &= ~(nk_flags)NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.active = 1; popup->layout->offset_x = &popup->scrollbar.x; popup->layout->offset_y = &popup->scrollbar.y; popup->layout->parent = win->layout; return 1; } else { /* popup was closed/is invalid so cleanup */ struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.buf.active = 0; win->popup.active = 0; ctx->memory.allocated = allocated; ctx->current = win; nk_free_panel(ctx, popup->layout); popup->layout = 0; return 0; } } NK_LIB int nk_nonblock_begin(struct nk_context *ctx, nk_flags flags, struct nk_rect body, struct nk_rect header, enum nk_panel_type panel_type) { struct nk_window *popup; struct nk_window *win; struct nk_panel *panel; int is_active = nk_true; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* popups cannot have popups */ win = ctx->current; panel = win->layout; NK_ASSERT(!(panel->type & NK_PANEL_SET_POPUP)); (void)panel; popup = win->popup.win; if (!popup) { /* create window for nonblocking popup */ popup = (struct nk_window*)nk_create_window(ctx); popup->parent = win; win->popup.win = popup; win->popup.type = panel_type; nk_command_buffer_init(&popup->buffer, &ctx->memory, NK_CLIPPING_ON); } else { /* close the popup if user pressed outside or in the header */ int pressed, in_body, in_header; #ifdef NK_BUTTON_TRIGGER_ON_RELEASE pressed = nk_input_is_mouse_released(&ctx->input, NK_BUTTON_LEFT); #else pressed = nk_input_is_mouse_pressed(&ctx->input, NK_BUTTON_LEFT); #endif in_body = nk_input_is_mouse_hovering_rect(&ctx->input, body); in_header = nk_input_is_mouse_hovering_rect(&ctx->input, header); if (pressed && (!in_body || in_header)) is_active = nk_false; } win->popup.header = header; if (!is_active) { /* remove read only mode from all parent panels */ struct nk_panel *root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } return is_active; } popup->bounds = body; popup->parent = win; popup->layout = (struct nk_panel*)nk_create_panel(ctx); popup->flags = flags; popup->flags |= NK_WINDOW_BORDER; popup->flags |= NK_WINDOW_DYNAMIC; popup->seq = ctx->seq; win->popup.active = 1; NK_ASSERT(popup->layout); nk_start_popup(ctx, win); popup->buffer = win->buffer; nk_push_scissor(&popup->buffer, nk_null_rect); ctx->current = popup; nk_panel_begin(ctx, 0, panel_type); win->buffer = popup->buffer; popup->layout->parent = win->layout; popup->layout->offset_x = &popup->scrollbar.x; popup->layout->offset_y = &popup->scrollbar.y; /* set read only mode to all parent panels */ {struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_ROM; root = root->parent; }} return is_active; } NK_API void nk_popup_close(struct nk_context *ctx) { struct nk_window *popup; NK_ASSERT(ctx); if (!ctx || !ctx->current) return; popup = ctx->current; NK_ASSERT(popup->parent); NK_ASSERT(popup->layout->type & NK_PANEL_SET_POPUP); popup->flags |= NK_WINDOW_HIDDEN; } NK_API void nk_popup_end(struct nk_context *ctx) { struct nk_window *win; struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; if (!popup->parent) return; win = popup->parent; if (popup->flags & NK_WINDOW_HIDDEN) { struct nk_panel *root; root = win->layout; while (root) { root->flags |= NK_WINDOW_REMOVE_ROM; root = root->parent; } win->popup.active = 0; } nk_push_scissor(&popup->buffer, nk_null_rect); nk_end(ctx); win->buffer = popup->buffer; nk_finish_popup(ctx, win); ctx->current = win; nk_push_scissor(&win->buffer, win->layout->clip); } NK_API void nk_popup_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y) { struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; if (offset_x) *offset_x = popup->scrollbar.x; if (offset_y) *offset_y = popup->scrollbar.y; } NK_API void nk_popup_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y) { struct nk_window *popup; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; popup = ctx->current; popup->scrollbar.x = offset_x; popup->scrollbar.y = offset_y; } ================================================ FILE: src/nuklear_progress.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * PROGRESS * * ===============================================================*/ NK_LIB nk_size nk_progress_behavior(nk_flags *state, struct nk_input *in, struct nk_rect r, struct nk_rect cursor, nk_size max, nk_size value, int modifiable) { int left_mouse_down = 0; int left_mouse_click_in_cursor = 0; nk_widget_state_reset(state); if (!in || !modifiable) return value; left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, cursor, nk_true); if (nk_input_is_mouse_hovering_rect(in, r)) *state = NK_WIDGET_STATE_HOVERED; if (in && left_mouse_down && left_mouse_click_in_cursor) { if (left_mouse_down && left_mouse_click_in_cursor) { float ratio = NK_MAX(0, (float)(in->mouse.pos.x - cursor.x)) / (float)cursor.w; value = (nk_size)NK_CLAMP(0, (float)max * ratio, (float)max); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = cursor.x + cursor.w/2.0f; *state |= NK_WIDGET_STATE_ACTIVE; } } /* set progressbar widget state */ if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, r)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, r)) *state |= NK_WIDGET_STATE_LEFT; return value; } NK_LIB void nk_draw_progress(struct nk_command_buffer *out, nk_flags state, const struct nk_style_progress *style, const struct nk_rect *bounds, const struct nk_rect *scursor, nk_size value, nk_size max) { const struct nk_style_item *background; const struct nk_style_item *cursor; NK_UNUSED(max); NK_UNUSED(value); /* select correct colors/images to draw */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER){ background = &style->hover; cursor = &style->cursor_hover; } else { background = &style->normal; cursor = &style->cursor_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } else nk_draw_image(out, *bounds, &background->data.image, nk_white); /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *scursor, style->rounding, cursor->data.color); nk_stroke_rect(out, *scursor, style->rounding, style->border, style->border_color); } else nk_draw_image(out, *scursor, &cursor->data.image, nk_white); } NK_LIB nk_size nk_do_progress(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_size value, nk_size max, int modifiable, const struct nk_style_progress *style, struct nk_input *in) { float prog_scale; nk_size prog_value; struct nk_rect cursor; NK_ASSERT(style); NK_ASSERT(out); if (!out || !style) return 0; /* calculate progressbar cursor */ cursor.w = NK_MAX(bounds.w, 2 * style->padding.x + 2 * style->border); cursor.h = NK_MAX(bounds.h, 2 * style->padding.y + 2 * style->border); cursor = nk_pad_rect(bounds, nk_vec2(style->padding.x + style->border, style->padding.y + style->border)); prog_scale = (float)value / (float)max; /* update progressbar */ prog_value = NK_MIN(value, max); prog_value = nk_progress_behavior(state, in, bounds, cursor,max, prog_value, modifiable); cursor.w = cursor.w * prog_scale; /* draw progressbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_progress(out, *state, style, &bounds, &cursor, value, max); if (style->draw_end) style->draw_end(out, style->userdata); return prog_value; } NK_API int nk_progress(struct nk_context *ctx, nk_size *cur, nk_size max, int is_modifyable) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_input *in; struct nk_rect bounds; enum nk_widget_layout_states state; nk_size old_value; NK_ASSERT(ctx); NK_ASSERT(cur); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !cur) return 0; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; old_value = *cur; *cur = nk_do_progress(&ctx->last_widget_state, &win->buffer, bounds, *cur, max, is_modifyable, &style->progress, in); return (*cur != old_value); } NK_API nk_size nk_prog(struct nk_context *ctx, nk_size cur, nk_size max, int modifyable) { nk_progress(ctx, &cur, max, modifyable); return cur; } ================================================ FILE: src/nuklear_property.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * PROPERTY * * ===============================================================*/ NK_LIB void nk_drag_behavior(nk_flags *state, const struct nk_input *in, struct nk_rect drag, struct nk_property_variant *variant, float inc_per_pixel) { int left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; int left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, drag, nk_true); nk_widget_state_reset(state); if (nk_input_is_mouse_hovering_rect(in, drag)) *state = NK_WIDGET_STATE_HOVERED; if (left_mouse_down && left_mouse_click_in_cursor) { float delta, pixels; pixels = in->mouse.delta.x; delta = pixels * inc_per_pixel; switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = variant->value.i + (int)delta; variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = variant->value.f + (float)delta; variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = variant->value.d + (double)delta; variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d, variant->max_value.d); break; } *state = NK_WIDGET_STATE_ACTIVE; } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, drag)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, drag)) *state |= NK_WIDGET_STATE_LEFT; } NK_LIB void nk_property_behavior(nk_flags *ws, const struct nk_input *in, struct nk_rect property, struct nk_rect label, struct nk_rect edit, struct nk_rect empty, int *state, struct nk_property_variant *variant, float inc_per_pixel) { if (in && *state == NK_PROPERTY_DEFAULT) { if (nk_button_behavior(ws, edit, in, NK_BUTTON_DEFAULT)) *state = NK_PROPERTY_EDIT; else if (nk_input_is_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, label, nk_true)) *state = NK_PROPERTY_DRAG; else if (nk_input_is_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, empty, nk_true)) *state = NK_PROPERTY_DRAG; } if (*state == NK_PROPERTY_DRAG) { nk_drag_behavior(ws, in, property, variant, inc_per_pixel); if (!(*ws & NK_WIDGET_STATE_ACTIVED)) *state = NK_PROPERTY_DEFAULT; } } NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_style_property *style, const struct nk_rect *bounds, const struct nk_rect *label, nk_flags state, const char *name, int len, const struct nk_user_font *font) { struct nk_text text; const struct nk_style_item *background; /* select correct background and text color */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; text.text = style->label_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text.text = style->label_hover; } else { background = &style->normal; text.text = style->label_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, background->data.color); } /* draw label */ text.padding = nk_vec2(0,0); nk_widget_text(out, *label, name, len, &text, NK_TEXT_CENTERED, font); } NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior) { const nk_plugin_filter filters[] = { nk_filter_decimal, nk_filter_float }; int active, old; int num_len, name_len; char string[NK_MAX_NUMBER_BUFFER]; float size; char *dst = 0; int *length; struct nk_rect left; struct nk_rect right; struct nk_rect label; struct nk_rect edit; struct nk_rect empty; /* left decrement button */ left.h = font->height/2; left.w = left.h; left.x = property.x + style->border + style->padding.x; left.y = property.y + style->border + property.h/2.0f - left.h/2; /* text label */ name_len = nk_strlen(name); size = font->width(font->userdata, font->height, name, name_len); label.x = left.x + left.w + style->padding.x; label.w = (float)size + 2 * style->padding.x; label.y = property.y + style->border + style->padding.y; label.h = property.h - (2 * style->border + 2 * style->padding.y); /* right increment button */ right.y = left.y; right.w = left.w; right.h = left.h; right.x = property.x + property.w - (right.w + style->padding.x); /* edit */ if (*state == NK_PROPERTY_EDIT) { size = font->width(font->userdata, font->height, buffer, *len); size += style->edit.cursor_size; length = len; dst = buffer; } else { switch (variant->kind) { default: break; case NK_PROPERTY_INT: nk_itoa(string, variant->value.i); num_len = nk_strlen(string); break; case NK_PROPERTY_FLOAT: NK_DTOA(string, (double)variant->value.f); num_len = nk_string_float_limit(string, NK_MAX_FLOAT_PRECISION); break; case NK_PROPERTY_DOUBLE: NK_DTOA(string, variant->value.d); num_len = nk_string_float_limit(string, NK_MAX_FLOAT_PRECISION); break; } size = font->width(font->userdata, font->height, string, num_len); dst = string; length = &num_len; } edit.w = (float)size + 2 * style->padding.x; edit.w = NK_MIN(edit.w, right.x - (label.x + label.w)); edit.x = right.x - (edit.w + style->padding.x); edit.y = property.y + style->border; edit.h = property.h - (2 * style->border); /* empty left space activator */ empty.w = edit.x - (label.x + label.w); empty.x = label.x + label.w; empty.y = property.y; empty.h = property.h; /* update property */ old = (*state == NK_PROPERTY_EDIT); nk_property_behavior(ws, in, property, label, edit, empty, state, variant, inc_per_pixel); /* draw property */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_property(out, style, &property, &label, *ws, name, name_len, font); if (style->draw_end) style->draw_end(out, style->userdata); /* execute right button */ if (nk_do_button_symbol(ws, out, left, style->sym_left, behavior, &style->dec_button, in, font)) { switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i - variant->step.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f - variant->step.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d - variant->step.d, variant->max_value.d); break; } } /* execute left button */ if (nk_do_button_symbol(ws, out, right, style->sym_right, behavior, &style->inc_button, in, font)) { switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i + variant->step.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f + variant->step.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d + variant->step.d, variant->max_value.d); break; } } if (old != NK_PROPERTY_EDIT && (*state == NK_PROPERTY_EDIT)) { /* property has been activated so setup buffer */ NK_MEMCPY(buffer, dst, (nk_size)*length); *cursor = nk_utf_len(buffer, *length); *len = *length; length = len; dst = buffer; active = 0; } else active = (*state == NK_PROPERTY_EDIT); /* execute and run text edit field */ nk_textedit_clear_state(text_edit, NK_TEXT_EDIT_SINGLE_LINE, filters[filter]); text_edit->active = (unsigned char)active; text_edit->string.len = *length; text_edit->cursor = NK_CLAMP(0, *cursor, *length); text_edit->select_start = NK_CLAMP(0,*select_begin, *length); text_edit->select_end = NK_CLAMP(0,*select_end, *length); text_edit->string.buffer.allocated = (nk_size)*length; text_edit->string.buffer.memory.size = NK_MAX_NUMBER_BUFFER; text_edit->string.buffer.memory.ptr = dst; text_edit->string.buffer.size = NK_MAX_NUMBER_BUFFER; text_edit->mode = NK_TEXT_EDIT_MODE_INSERT; nk_do_edit(ws, out, edit, NK_EDIT_FIELD|NK_EDIT_AUTO_SELECT, filters[filter], text_edit, &style->edit, (*state == NK_PROPERTY_EDIT) ? in: 0, font); *length = text_edit->string.len; *cursor = text_edit->cursor; *select_begin = text_edit->select_start; *select_end = text_edit->select_end; if (text_edit->active && nk_input_is_key_pressed(in, NK_KEY_ENTER)) text_edit->active = nk_false; if (active && !text_edit->active) { /* property is now not active so convert edit text to value*/ *state = NK_PROPERTY_DEFAULT; buffer[*len] = '\0'; switch (variant->kind) { default: break; case NK_PROPERTY_INT: variant->value.i = nk_strtoi(buffer, 0); variant->value.i = NK_CLAMP(variant->min_value.i, variant->value.i, variant->max_value.i); break; case NK_PROPERTY_FLOAT: nk_string_float_limit(buffer, NK_MAX_FLOAT_PRECISION); variant->value.f = nk_strtof(buffer, 0); variant->value.f = NK_CLAMP(variant->min_value.f, variant->value.f, variant->max_value.f); break; case NK_PROPERTY_DOUBLE: nk_string_float_limit(buffer, NK_MAX_FLOAT_PRECISION); variant->value.d = nk_strtod(buffer, 0); variant->value.d = NK_CLAMP(variant->min_value.d, variant->value.d, variant->max_value.d); break; } } } NK_LIB struct nk_property_variant nk_property_variant_int(int value, int min_value, int max_value, int step) { struct nk_property_variant result; result.kind = NK_PROPERTY_INT; result.value.i = value; result.min_value.i = min_value; result.max_value.i = max_value; result.step.i = step; return result; } NK_LIB struct nk_property_variant nk_property_variant_float(float value, float min_value, float max_value, float step) { struct nk_property_variant result; result.kind = NK_PROPERTY_FLOAT; result.value.f = value; result.min_value.f = min_value; result.max_value.f = max_value; result.step.f = step; return result; } NK_LIB struct nk_property_variant nk_property_variant_double(double value, double min_value, double max_value, double step) { struct nk_property_variant result; result.kind = NK_PROPERTY_DOUBLE; result.value.d = value; result.min_value.d = min_value; result.max_value.d = max_value; result.step.d = step; return result; } NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter) { struct nk_window *win; struct nk_panel *layout; struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states s; int *state = 0; nk_hash hash = 0; char *buffer = 0; int *len = 0; int *cursor = 0; int *select_begin = 0; int *select_end = 0; int old_state; char dummy_buffer[NK_MAX_NUMBER_BUFFER]; int dummy_state = NK_PROPERTY_DEFAULT; int dummy_length = 0; int dummy_cursor = 0; int dummy_select_begin = 0; int dummy_select_end = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; style = &ctx->style; s = nk_widget(&bounds, ctx); if (!s) return; /* calculate hash from name */ if (name[0] == '#') { hash = nk_murmur_hash(name, (int)nk_strlen(name), win->property.seq++); name++; /* special number hash */ } else hash = nk_murmur_hash(name, (int)nk_strlen(name), 42); /* check if property is currently hot item */ if (win->property.active && hash == win->property.name) { buffer = win->property.buffer; len = &win->property.length; cursor = &win->property.cursor; state = &win->property.state; select_begin = &win->property.select_start; select_end = &win->property.select_end; } else { buffer = dummy_buffer; len = &dummy_length; cursor = &dummy_cursor; state = &dummy_state; select_begin = &dummy_select_begin; select_end = &dummy_select_end; } /* execute property widget */ old_state = *state; ctx->text_edit.clip = ctx->clip; in = ((s == NK_WIDGET_ROM && !win->property.active) || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_property(&ctx->last_widget_state, &win->buffer, bounds, name, variant, inc_per_pixel, buffer, len, state, cursor, select_begin, select_end, &style->property, filter, in, style->font, &ctx->text_edit, ctx->button_behavior); if (in && *state != NK_PROPERTY_DEFAULT && !win->property.active) { /* current property is now hot */ win->property.active = 1; NK_MEMCPY(win->property.buffer, buffer, (nk_size)*len); win->property.length = *len; win->property.cursor = *cursor; win->property.state = *state; win->property.name = hash; win->property.select_start = *select_begin; win->property.select_end = *select_end; if (*state == NK_PROPERTY_DRAG) { ctx->input.mouse.grab = nk_true; ctx->input.mouse.grabbed = nk_true; } } /* check if previously active property is now inactive */ if (*state == NK_PROPERTY_DEFAULT && old_state != NK_PROPERTY_DEFAULT) { if (old_state == NK_PROPERTY_DRAG) { ctx->input.mouse.grab = nk_false; ctx->input.mouse.grabbed = nk_false; ctx->input.mouse.ungrab = nk_true; } win->property.select_start = 0; win->property.select_end = 0; win->property.active = 0; } } NK_API void nk_property_int(struct nk_context *ctx, const char *name, int min, int *val, int max, int step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_int(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_INT); *val = variant.value.i; } NK_API void nk_property_float(struct nk_context *ctx, const char *name, float min, float *val, float max, float step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_float(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); *val = variant.value.f; } NK_API void nk_property_double(struct nk_context *ctx, const char *name, double min, double *val, double max, double step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(val); if (!ctx || !ctx->current || !name || !val) return; variant = nk_property_variant_double(*val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); *val = variant.value.d; } NK_API int nk_propertyi(struct nk_context *ctx, const char *name, int min, int val, int max, int step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_int(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_INT); val = variant.value.i; return val; } NK_API float nk_propertyf(struct nk_context *ctx, const char *name, float min, float val, float max, float step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_float(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); val = variant.value.f; return val; } NK_API double nk_propertyd(struct nk_context *ctx, const char *name, double min, double val, double max, double step, float inc_per_pixel) { struct nk_property_variant variant; NK_ASSERT(ctx); NK_ASSERT(name); if (!ctx || !ctx->current || !name) return val; variant = nk_property_variant_double(val, min, max, step); nk_property(ctx, name, &variant, inc_per_pixel, NK_FILTER_FLOAT); val = variant.value.d; return val; } ================================================ FILE: src/nuklear_scrollbar.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * SCROLLBAR * * ===============================================================*/ NK_LIB float nk_scrollbar_behavior(nk_flags *state, struct nk_input *in, int has_scrolling, const struct nk_rect *scroll, const struct nk_rect *cursor, const struct nk_rect *empty0, const struct nk_rect *empty1, float scroll_offset, float target, float scroll_step, enum nk_orientation o) { nk_flags ws = 0; int left_mouse_down; int left_mouse_clicked; int left_mouse_click_in_cursor; float scroll_delta; nk_widget_state_reset(state); if (!in) return scroll_offset; left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_clicked = in->mouse.buttons[NK_BUTTON_LEFT].clicked; left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, *cursor, nk_true); if (nk_input_is_mouse_hovering_rect(in, *scroll)) *state = NK_WIDGET_STATE_HOVERED; scroll_delta = (o == NK_VERTICAL) ? in->mouse.scroll_delta.y: in->mouse.scroll_delta.x; if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) { /* update cursor by mouse dragging */ float pixel, delta; *state = NK_WIDGET_STATE_ACTIVE; if (o == NK_VERTICAL) { float cursor_y; pixel = in->mouse.delta.y; delta = (pixel / scroll->h) * target; scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll->h); cursor_y = scroll->y + ((scroll_offset/target) * scroll->h); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y = cursor_y + cursor->h/2.0f; } else { float cursor_x; pixel = in->mouse.delta.x; delta = (pixel / scroll->w) * target; scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll->w); cursor_x = scroll->x + ((scroll_offset/target) * scroll->w); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = cursor_x + cursor->w/2.0f; } } else if ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_UP) && o == NK_VERTICAL && has_scrolling)|| nk_button_behavior(&ws, *empty0, in, NK_BUTTON_DEFAULT)) { /* scroll page up by click on empty space or shortcut */ if (o == NK_VERTICAL) scroll_offset = NK_MAX(0, scroll_offset - scroll->h); else scroll_offset = NK_MAX(0, scroll_offset - scroll->w); } else if ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_DOWN) && o == NK_VERTICAL && has_scrolling) || nk_button_behavior(&ws, *empty1, in, NK_BUTTON_DEFAULT)) { /* scroll page down by click on empty space or shortcut */ if (o == NK_VERTICAL) scroll_offset = NK_MIN(scroll_offset + scroll->h, target - scroll->h); else scroll_offset = NK_MIN(scroll_offset + scroll->w, target - scroll->w); } else if (has_scrolling) { if ((scroll_delta < 0 || (scroll_delta > 0))) { /* update cursor by mouse scrolling */ scroll_offset = scroll_offset + scroll_step * (-scroll_delta); if (o == NK_VERTICAL) scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll->h); else scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll->w); } else if (nk_input_is_key_pressed(in, NK_KEY_SCROLL_START)) { /* update cursor to the beginning */ if (o == NK_VERTICAL) scroll_offset = 0; } else if (nk_input_is_key_pressed(in, NK_KEY_SCROLL_END)) { /* update cursor to the end */ if (o == NK_VERTICAL) scroll_offset = target - scroll->h; } } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, *scroll)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, *scroll)) *state |= NK_WIDGET_STATE_LEFT; return scroll_offset; } NK_LIB void nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state, const struct nk_style_scrollbar *style, const struct nk_rect *bounds, const struct nk_rect *scroll) { const struct nk_style_item *background; const struct nk_style_item *cursor; /* select correct colors/images to draw */ if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; } else { background = &style->normal; cursor = &style->cursor_normal; } /* draw background */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } else { nk_draw_image(out, *bounds, &background->data.image, nk_white); } /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *scroll, style->rounding_cursor, cursor->data.color); nk_stroke_rect(out, *scroll, style->rounding_cursor, style->border_cursor, style->cursor_border_color); } else nk_draw_image(out, *scroll, &cursor->data.image, nk_white); } NK_LIB float nk_do_scrollbarv(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect empty_north; struct nk_rect empty_south; struct nk_rect cursor; float scroll_step; float scroll_offset; float scroll_off; float scroll_ratio; NK_ASSERT(out); NK_ASSERT(style); NK_ASSERT(state); if (!out || !style) return 0; scroll.w = NK_MAX(scroll.w, 1); scroll.h = NK_MAX(scroll.h, 0); if (target <= scroll.h) return 0; /* optional scrollbar buttons */ if (style->show_buttons) { nk_flags ws; float scroll_h; struct nk_rect button; button.x = scroll.x; button.w = scroll.w; button.h = scroll.w; scroll_h = NK_MAX(scroll.h - 2 * button.h,0); scroll_step = NK_MIN(step, button_pixel_inc); /* decrement button */ button.y = scroll.y; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_REPEATER, &style->dec_button, in, font)) offset = offset - scroll_step; /* increment button */ button.y = scroll.y + scroll.h - button.h; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_REPEATER, &style->inc_button, in, font)) offset = offset + scroll_step; scroll.y = scroll.y + button.h; scroll.h = scroll_h; } /* calculate scrollbar constants */ scroll_step = NK_MIN(step, scroll.h); scroll_offset = NK_CLAMP(0, offset, target - scroll.h); scroll_ratio = scroll.h / target; scroll_off = scroll_offset / target; /* calculate scrollbar cursor bounds */ cursor.h = NK_MAX((scroll_ratio * scroll.h) - (2*style->border + 2*style->padding.y), 0); cursor.y = scroll.y + (scroll_off * scroll.h) + style->border + style->padding.y; cursor.w = scroll.w - (2 * style->border + 2 * style->padding.x); cursor.x = scroll.x + style->border + style->padding.x; /* calculate empty space around cursor */ empty_north.x = scroll.x; empty_north.y = scroll.y; empty_north.w = scroll.w; empty_north.h = NK_MAX(cursor.y - scroll.y, 0); empty_south.x = scroll.x; empty_south.y = cursor.y + cursor.h; empty_south.w = scroll.w; empty_south.h = NK_MAX((scroll.y + scroll.h) - (cursor.y + cursor.h), 0); /* update scrollbar */ scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &scroll, &cursor, &empty_north, &empty_south, scroll_offset, target, scroll_step, NK_VERTICAL); scroll_off = scroll_offset / target; cursor.y = scroll.y + (scroll_off * scroll.h) + style->border_cursor + style->padding.y; /* draw scrollbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_scrollbar(out, *state, style, &scroll, &cursor); if (style->draw_end) style->draw_end(out, style->userdata); return scroll_offset; } NK_LIB float nk_do_scrollbarh(nk_flags *state, struct nk_command_buffer *out, struct nk_rect scroll, int has_scrolling, float offset, float target, float step, float button_pixel_inc, const struct nk_style_scrollbar *style, struct nk_input *in, const struct nk_user_font *font) { struct nk_rect cursor; struct nk_rect empty_west; struct nk_rect empty_east; float scroll_step; float scroll_offset; float scroll_off; float scroll_ratio; NK_ASSERT(out); NK_ASSERT(style); if (!out || !style) return 0; /* scrollbar background */ scroll.h = NK_MAX(scroll.h, 1); scroll.w = NK_MAX(scroll.w, 2 * scroll.h); if (target <= scroll.w) return 0; /* optional scrollbar buttons */ if (style->show_buttons) { nk_flags ws; float scroll_w; struct nk_rect button; button.y = scroll.y; button.w = scroll.h; button.h = scroll.h; scroll_w = scroll.w - 2 * button.w; scroll_step = NK_MIN(step, button_pixel_inc); /* decrement button */ button.x = scroll.x; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_REPEATER, &style->dec_button, in, font)) offset = offset - scroll_step; /* increment button */ button.x = scroll.x + scroll.w - button.w; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_REPEATER, &style->inc_button, in, font)) offset = offset + scroll_step; scroll.x = scroll.x + button.w; scroll.w = scroll_w; } /* calculate scrollbar constants */ scroll_step = NK_MIN(step, scroll.w); scroll_offset = NK_CLAMP(0, offset, target - scroll.w); scroll_ratio = scroll.w / target; scroll_off = scroll_offset / target; /* calculate cursor bounds */ cursor.w = (scroll_ratio * scroll.w) - (2*style->border + 2*style->padding.x); cursor.x = scroll.x + (scroll_off * scroll.w) + style->border + style->padding.x; cursor.h = scroll.h - (2 * style->border + 2 * style->padding.y); cursor.y = scroll.y + style->border + style->padding.y; /* calculate empty space around cursor */ empty_west.x = scroll.x; empty_west.y = scroll.y; empty_west.w = cursor.x - scroll.x; empty_west.h = scroll.h; empty_east.x = cursor.x + cursor.w; empty_east.y = scroll.y; empty_east.w = (scroll.x + scroll.w) - (cursor.x + cursor.w); empty_east.h = scroll.h; /* update scrollbar */ scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &scroll, &cursor, &empty_west, &empty_east, scroll_offset, target, scroll_step, NK_HORIZONTAL); scroll_off = scroll_offset / target; cursor.x = scroll.x + (scroll_off * scroll.w); /* draw scrollbar */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_scrollbar(out, *state, style, &scroll, &cursor); if (style->draw_end) style->draw_end(out, style->userdata); return scroll_offset; } ================================================ FILE: src/nuklear_selectable.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * SELECTABLE * * ===============================================================*/ NK_LIB void nk_draw_selectable(struct nk_command_buffer *out, nk_flags state, const struct nk_style_selectable *style, int active, const struct nk_rect *bounds, const struct nk_rect *icon, const struct nk_image *img, enum nk_symbol_type sym, const char *string, int len, nk_flags align, const struct nk_user_font *font) { const struct nk_style_item *background; struct nk_text text; text.padding = style->padding; /* select correct colors/images */ if (!active) { if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->pressed; text.text = style->text_pressed; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; text.text = style->text_hover; } else { background = &style->normal; text.text = style->text_normal; } } else { if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->pressed_active; text.text = style->text_pressed_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover_active; text.text = style->text_hover_active; } else { background = &style->normal_active; text.text = style->text_normal_active; } } /* draw selectable background and text */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); text.background = background->data.color; } if (icon) { if (img) nk_draw_image(out, *icon, img, nk_white); else nk_draw_symbol(out, sym, *icon, text.background, text.text, 1, font); } nk_widget_text(out, *bounds, string, len, &text, align, font); } NK_LIB int nk_do_selectable(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* remove padding */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; /* update button */ if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, 0,0,NK_SYMBOL_NONE, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_LIB int nk_do_selectable_image(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, const struct nk_image *img, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; struct nk_rect icon; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* toggle behavior */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, &icon, img, NK_SYMBOL_NONE, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_LIB int nk_do_selectable_symbol(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, const char *str, int len, nk_flags align, int *value, enum nk_symbol_type sym, const struct nk_style_selectable *style, const struct nk_input *in, const struct nk_user_font *font) { int old_value; struct nk_rect touch; struct nk_rect icon; NK_ASSERT(state); NK_ASSERT(out); NK_ASSERT(str); NK_ASSERT(len); NK_ASSERT(value); NK_ASSERT(style); NK_ASSERT(font); if (!state || !out || !str || !len || !value || !style || !font) return 0; old_value = *value; /* toggle behavior */ touch.x = bounds.x - style->touch_padding.x; touch.y = bounds.y - style->touch_padding.y; touch.w = bounds.w + style->touch_padding.x * 2; touch.h = bounds.h + style->touch_padding.y * 2; if (nk_button_behavior(state, touch, in, NK_BUTTON_DEFAULT)) *value = !(*value); icon.y = bounds.y + style->padding.y; icon.w = icon.h = bounds.h - 2 * style->padding.y; if (align & NK_TEXT_ALIGN_LEFT) { icon.x = (bounds.x + bounds.w) - (2 * style->padding.x + icon.w); icon.x = NK_MAX(icon.x, 0); } else icon.x = bounds.x + 2 * style->padding.x; icon.x += style->image_padding.x; icon.y += style->image_padding.y; icon.w -= 2 * style->image_padding.x; icon.h -= 2 * style->image_padding.y; /* draw selectable */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_selectable(out, *state, style, *value, &bounds, &icon, 0, sym, str, len, align, font); if (style->draw_end) style->draw_end(out, style->userdata); return old_value != *value; } NK_API int nk_selectable_text(struct nk_context *ctx, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, &style->selectable, in, style->font); } NK_API int nk_selectable_image_text(struct nk_context *ctx, struct nk_image img, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable_image(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, &img, &style->selectable, in, style->font); } NK_API int nk_selectable_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *str, int len, nk_flags align, int *value) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; enum nk_widget_layout_states state; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(value); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout || !value) return 0; win = ctx->current; layout = win->layout; style = &ctx->style; state = nk_widget(&bounds, ctx); if (!state) return 0; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; return nk_do_selectable_symbol(&ctx->last_widget_state, &win->buffer, bounds, str, len, align, value, sym, &style->selectable, in, style->font); } NK_API int nk_selectable_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, nk_flags align, int *value) { return nk_selectable_symbol_text(ctx, sym, title, nk_strlen(title), align, value); } NK_API int nk_select_text(struct nk_context *ctx, const char *str, int len, nk_flags align, int value) { nk_selectable_text(ctx, str, len, align, &value);return value; } NK_API int nk_selectable_label(struct nk_context *ctx, const char *str, nk_flags align, int *value) { return nk_selectable_text(ctx, str, nk_strlen(str), align, value); } NK_API int nk_selectable_image_label(struct nk_context *ctx,struct nk_image img, const char *str, nk_flags align, int *value) { return nk_selectable_image_text(ctx, img, str, nk_strlen(str), align, value); } NK_API int nk_select_label(struct nk_context *ctx, const char *str, nk_flags align, int value) { nk_selectable_text(ctx, str, nk_strlen(str), align, &value);return value; } NK_API int nk_select_image_label(struct nk_context *ctx, struct nk_image img, const char *str, nk_flags align, int value) { nk_selectable_image_text(ctx, img, str, nk_strlen(str), align, &value);return value; } NK_API int nk_select_image_text(struct nk_context *ctx, struct nk_image img, const char *str, int len, nk_flags align, int value) { nk_selectable_image_text(ctx, img, str, len, align, &value);return value; } NK_API int nk_select_symbol_text(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, int title_len, nk_flags align, int value) { nk_selectable_symbol_text(ctx, sym, title, title_len, align, &value);return value; } NK_API int nk_select_symbol_label(struct nk_context *ctx, enum nk_symbol_type sym, const char *title, nk_flags align, int value) { return nk_select_symbol_text(ctx, sym, title, nk_strlen(title), align, value); } ================================================ FILE: src/nuklear_slider.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * SLIDER * * ===============================================================*/ NK_LIB float nk_slider_behavior(nk_flags *state, struct nk_rect *logical_cursor, struct nk_rect *visual_cursor, struct nk_input *in, struct nk_rect bounds, float slider_min, float slider_max, float slider_value, float slider_step, float slider_steps) { int left_mouse_down; int left_mouse_click_in_cursor; /* check if visual cursor is being dragged */ nk_widget_state_reset(state); left_mouse_down = in && in->mouse.buttons[NK_BUTTON_LEFT].down; left_mouse_click_in_cursor = in && nk_input_has_mouse_click_down_in_rect(in, NK_BUTTON_LEFT, *visual_cursor, nk_true); if (left_mouse_down && left_mouse_click_in_cursor) { float ratio = 0; const float d = in->mouse.pos.x - (visual_cursor->x+visual_cursor->w*0.5f); const float pxstep = bounds.w / slider_steps; /* only update value if the next slider step is reached */ *state = NK_WIDGET_STATE_ACTIVE; if (NK_ABS(d) >= pxstep) { const float steps = (float)((int)(NK_ABS(d) / pxstep)); slider_value += (d > 0) ? (slider_step*steps) : -(slider_step*steps); slider_value = NK_CLAMP(slider_min, slider_value, slider_max); ratio = (slider_value - slider_min)/slider_step; logical_cursor->x = bounds.x + (logical_cursor->w * ratio); in->mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = logical_cursor->x; } } /* slider widget state */ if (nk_input_is_mouse_hovering_rect(in, bounds)) *state = NK_WIDGET_STATE_HOVERED; if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, bounds)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, bounds)) *state |= NK_WIDGET_STATE_LEFT; return slider_value; } NK_LIB void nk_draw_slider(struct nk_command_buffer *out, nk_flags state, const struct nk_style_slider *style, const struct nk_rect *bounds, const struct nk_rect *visual_cursor, float min, float value, float max) { struct nk_rect fill; struct nk_rect bar; const struct nk_style_item *background; /* select correct slider images/colors */ struct nk_color bar_color; const struct nk_style_item *cursor; NK_UNUSED(min); NK_UNUSED(max); NK_UNUSED(value); if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->active; bar_color = style->bar_active; cursor = &style->cursor_active; } else if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; bar_color = style->bar_hover; cursor = &style->cursor_hover; } else { background = &style->normal; bar_color = style->bar_normal; cursor = &style->cursor_normal; } /* calculate slider background bar */ bar.x = bounds->x; bar.y = (visual_cursor->y + visual_cursor->h/2) - bounds->h/12; bar.w = bounds->w; bar.h = bounds->h/6; /* filled background bar style */ fill.w = (visual_cursor->x + (visual_cursor->w/2.0f)) - bar.x; fill.x = bar.x; fill.y = bar.y; fill.h = bar.h; /* draw background */ if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, *bounds, &background->data.image, nk_white); } else { nk_fill_rect(out, *bounds, style->rounding, background->data.color); nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color); } /* draw slider bar */ nk_fill_rect(out, bar, style->rounding, bar_color); nk_fill_rect(out, fill, style->rounding, style->bar_filled); /* draw cursor */ if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *visual_cursor, &cursor->data.image, nk_white); else nk_fill_circle(out, *visual_cursor, cursor->data.color); } NK_LIB float nk_do_slider(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, float min, float val, float max, float step, const struct nk_style_slider *style, struct nk_input *in, const struct nk_user_font *font) { float slider_range; float slider_min; float slider_max; float slider_value; float slider_steps; float cursor_offset; struct nk_rect visual_cursor; struct nk_rect logical_cursor; NK_ASSERT(style); NK_ASSERT(out); if (!out || !style) return 0; /* remove padding from slider bounds */ bounds.x = bounds.x + style->padding.x; bounds.y = bounds.y + style->padding.y; bounds.h = NK_MAX(bounds.h, 2*style->padding.y); bounds.w = NK_MAX(bounds.w, 2*style->padding.x + style->cursor_size.x); bounds.w -= 2 * style->padding.x; bounds.h -= 2 * style->padding.y; /* optional buttons */ if (style->show_buttons) { nk_flags ws; struct nk_rect button; button.y = bounds.y; button.w = bounds.h; button.h = bounds.h; /* decrement button */ button.x = bounds.x; if (nk_do_button_symbol(&ws, out, button, style->dec_symbol, NK_BUTTON_DEFAULT, &style->dec_button, in, font)) val -= step; /* increment button */ button.x = (bounds.x + bounds.w) - button.w; if (nk_do_button_symbol(&ws, out, button, style->inc_symbol, NK_BUTTON_DEFAULT, &style->inc_button, in, font)) val += step; bounds.x = bounds.x + button.w + style->spacing.x; bounds.w = bounds.w - (2*button.w + 2*style->spacing.x); } /* remove one cursor size to support visual cursor */ bounds.x += style->cursor_size.x*0.5f; bounds.w -= style->cursor_size.x; /* make sure the provided values are correct */ slider_max = NK_MAX(min, max); slider_min = NK_MIN(min, max); slider_value = NK_CLAMP(slider_min, val, slider_max); slider_range = slider_max - slider_min; slider_steps = slider_range / step; cursor_offset = (slider_value - slider_min) / step; /* calculate cursor Basically you have two cursors. One for visual representation and interaction and one for updating the actual cursor value. */ logical_cursor.h = bounds.h; logical_cursor.w = bounds.w / slider_steps; logical_cursor.x = bounds.x + (logical_cursor.w * cursor_offset); logical_cursor.y = bounds.y; visual_cursor.h = style->cursor_size.y; visual_cursor.w = style->cursor_size.x; visual_cursor.y = (bounds.y + bounds.h*0.5f) - visual_cursor.h*0.5f; visual_cursor.x = logical_cursor.x - visual_cursor.w*0.5f; slider_value = nk_slider_behavior(state, &logical_cursor, &visual_cursor, in, bounds, slider_min, slider_max, slider_value, step, slider_steps); visual_cursor.x = logical_cursor.x - visual_cursor.w*0.5f; /* draw slider */ if (style->draw_begin) style->draw_begin(out, style->userdata); nk_draw_slider(out, *state, style, &bounds, &visual_cursor, slider_min, slider_value, slider_max); if (style->draw_end) style->draw_end(out, style->userdata); return slider_value; } NK_API int nk_slider_float(struct nk_context *ctx, float min_value, float *value, float max_value, float value_step) { struct nk_window *win; struct nk_panel *layout; struct nk_input *in; const struct nk_style *style; int ret = 0; float old_value; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(value); if (!ctx || !ctx->current || !ctx->current->layout || !value) return ret; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return ret; in = (/*state == NK_WIDGET_ROM || */ layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; old_value = *value; *value = nk_do_slider(&ctx->last_widget_state, &win->buffer, bounds, min_value, old_value, max_value, value_step, &style->slider, in, style->font); return (old_value > *value || old_value < *value); } NK_API float nk_slide_float(struct nk_context *ctx, float min, float val, float max, float step) { nk_slider_float(ctx, min, &val, max, step); return val; } NK_API int nk_slide_int(struct nk_context *ctx, int min, int val, int max, int step) { float value = (float)val; nk_slider_float(ctx, (float)min, &value, (float)max, (float)step); return (int)value; } NK_API int nk_slider_int(struct nk_context *ctx, int min, int *val, int max, int step) { int ret; float value = (float)*val; ret = nk_slider_float(ctx, (float)min, &value, (float)max, (float)step); *val = (int)value; return ret; } ================================================ FILE: src/nuklear_string.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * STRING * * ===============================================================*/ #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_str_init_default(struct nk_str *str) { struct nk_allocator alloc; alloc.userdata.ptr = 0; alloc.alloc = nk_malloc; alloc.free = nk_mfree; nk_buffer_init(&str->buffer, &alloc, 32); str->len = 0; } #endif NK_API void nk_str_init(struct nk_str *str, const struct nk_allocator *alloc, nk_size size) { nk_buffer_init(&str->buffer, alloc, size); str->len = 0; } NK_API void nk_str_init_fixed(struct nk_str *str, void *memory, nk_size size) { nk_buffer_init_fixed(&str->buffer, memory, size); str->len = 0; } NK_API int nk_str_append_text_char(struct nk_str *s, const char *str, int len) { char *mem; NK_ASSERT(s); NK_ASSERT(str); if (!s || !str || !len) return 0; mem = (char*)nk_buffer_alloc(&s->buffer, NK_BUFFER_FRONT, (nk_size)len * sizeof(char), 0); if (!mem) return 0; NK_MEMCPY(mem, str, (nk_size)len * sizeof(char)); s->len += nk_utf_len(str, len); return len; } NK_API int nk_str_append_str_char(struct nk_str *s, const char *str) { return nk_str_append_text_char(s, str, nk_strlen(str)); } NK_API int nk_str_append_text_utf8(struct nk_str *str, const char *text, int len) { int i = 0; int byte_len = 0; nk_rune unicode; if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) byte_len += nk_utf_decode(text+byte_len, &unicode, 4); nk_str_append_text_char(str, text, byte_len); return len; } NK_API int nk_str_append_str_utf8(struct nk_str *str, const char *text) { int runes = 0; int byte_len = 0; int num_runes = 0; int glyph_len = 0; nk_rune unicode; if (!str || !text) return 0; glyph_len = byte_len = nk_utf_decode(text+byte_len, &unicode, 4); while (unicode != '\0' && glyph_len) { glyph_len = nk_utf_decode(text+byte_len, &unicode, 4); byte_len += glyph_len; num_runes++; } nk_str_append_text_char(str, text, byte_len); return runes; } NK_API int nk_str_append_text_runes(struct nk_str *str, const nk_rune *text, int len) { int i = 0; int byte_len = 0; nk_glyph glyph; NK_ASSERT(str); if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) { byte_len = nk_utf_encode(text[i], glyph, NK_UTF_SIZE); if (!byte_len) break; nk_str_append_text_char(str, glyph, byte_len); } return len; } NK_API int nk_str_append_str_runes(struct nk_str *str, const nk_rune *runes) { int i = 0; nk_glyph glyph; int byte_len; NK_ASSERT(str); if (!str || !runes) return 0; while (runes[i] != '\0') { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); nk_str_append_text_char(str, glyph, byte_len); i++; } return i; } NK_API int nk_str_insert_at_char(struct nk_str *s, int pos, const char *str, int len) { int i; void *mem; char *src; char *dst; int copylen; NK_ASSERT(s); NK_ASSERT(str); NK_ASSERT(len >= 0); if (!s || !str || !len || (nk_size)pos > s->buffer.allocated) return 0; if ((s->buffer.allocated + (nk_size)len >= s->buffer.memory.size) && (s->buffer.type == NK_BUFFER_FIXED)) return 0; copylen = (int)s->buffer.allocated - pos; if (!copylen) { nk_str_append_text_char(s, str, len); return 1; } mem = nk_buffer_alloc(&s->buffer, NK_BUFFER_FRONT, (nk_size)len * sizeof(char), 0); if (!mem) return 0; /* memmove */ NK_ASSERT(((int)pos + (int)len + ((int)copylen - 1)) >= 0); NK_ASSERT(((int)pos + ((int)copylen - 1)) >= 0); dst = nk_ptr_add(char, s->buffer.memory.ptr, pos + len + (copylen - 1)); src = nk_ptr_add(char, s->buffer.memory.ptr, pos + (copylen-1)); for (i = 0; i < copylen; ++i) *dst-- = *src--; mem = nk_ptr_add(void, s->buffer.memory.ptr, pos); NK_MEMCPY(mem, str, (nk_size)len * sizeof(char)); s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); return 1; } NK_API int nk_str_insert_at_rune(struct nk_str *str, int pos, const char *cstr, int len) { int glyph_len; nk_rune unicode; const char *begin; const char *buffer; NK_ASSERT(str); NK_ASSERT(cstr); NK_ASSERT(len); if (!str || !cstr || !len) return 0; begin = nk_str_at_rune(str, pos, &unicode, &glyph_len); if (!str->len) return nk_str_append_text_char(str, cstr, len); buffer = nk_str_get_const(str); if (!begin) return 0; return nk_str_insert_at_char(str, (int)(begin - buffer), cstr, len); } NK_API int nk_str_insert_text_char(struct nk_str *str, int pos, const char *text, int len) { return nk_str_insert_text_utf8(str, pos, text, len); } NK_API int nk_str_insert_str_char(struct nk_str *str, int pos, const char *text) { return nk_str_insert_text_utf8(str, pos, text, nk_strlen(text)); } NK_API int nk_str_insert_text_utf8(struct nk_str *str, int pos, const char *text, int len) { int i = 0; int byte_len = 0; nk_rune unicode; NK_ASSERT(str); NK_ASSERT(text); if (!str || !text || !len) return 0; for (i = 0; i < len; ++i) byte_len += nk_utf_decode(text+byte_len, &unicode, 4); nk_str_insert_at_rune(str, pos, text, byte_len); return len; } NK_API int nk_str_insert_str_utf8(struct nk_str *str, int pos, const char *text) { int runes = 0; int byte_len = 0; int num_runes = 0; int glyph_len = 0; nk_rune unicode; if (!str || !text) return 0; glyph_len = byte_len = nk_utf_decode(text+byte_len, &unicode, 4); while (unicode != '\0' && glyph_len) { glyph_len = nk_utf_decode(text+byte_len, &unicode, 4); byte_len += glyph_len; num_runes++; } nk_str_insert_at_rune(str, pos, text, byte_len); return runes; } NK_API int nk_str_insert_text_runes(struct nk_str *str, int pos, const nk_rune *runes, int len) { int i = 0; int byte_len = 0; nk_glyph glyph; NK_ASSERT(str); if (!str || !runes || !len) return 0; for (i = 0; i < len; ++i) { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); if (!byte_len) break; nk_str_insert_at_rune(str, pos+i, glyph, byte_len); } return len; } NK_API int nk_str_insert_str_runes(struct nk_str *str, int pos, const nk_rune *runes) { int i = 0; nk_glyph glyph; int byte_len; NK_ASSERT(str); if (!str || !runes) return 0; while (runes[i] != '\0') { byte_len = nk_utf_encode(runes[i], glyph, NK_UTF_SIZE); nk_str_insert_at_rune(str, pos+i, glyph, byte_len); i++; } return i; } NK_API void nk_str_remove_chars(struct nk_str *s, int len) { NK_ASSERT(s); NK_ASSERT(len >= 0); if (!s || len < 0 || (nk_size)len > s->buffer.allocated) return; NK_ASSERT(((int)s->buffer.allocated - (int)len) >= 0); s->buffer.allocated -= (nk_size)len; s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); } NK_API void nk_str_remove_runes(struct nk_str *str, int len) { int index; const char *begin; const char *end; nk_rune unicode; NK_ASSERT(str); NK_ASSERT(len >= 0); if (!str || len < 0) return; if (len >= str->len) { str->len = 0; return; } index = str->len - len; begin = nk_str_at_rune(str, index, &unicode, &len); end = (const char*)str->buffer.memory.ptr + str->buffer.allocated; nk_str_remove_chars(str, (int)(end-begin)+1); } NK_API void nk_str_delete_chars(struct nk_str *s, int pos, int len) { NK_ASSERT(s); if (!s || !len || (nk_size)pos > s->buffer.allocated || (nk_size)(pos + len) > s->buffer.allocated) return; if ((nk_size)(pos + len) < s->buffer.allocated) { /* memmove */ char *dst = nk_ptr_add(char, s->buffer.memory.ptr, pos); char *src = nk_ptr_add(char, s->buffer.memory.ptr, pos + len); NK_MEMCPY(dst, src, s->buffer.allocated - (nk_size)(pos + len)); NK_ASSERT(((int)s->buffer.allocated - (int)len) >= 0); s->buffer.allocated -= (nk_size)len; } else nk_str_remove_chars(s, len); s->len = nk_utf_len((char *)s->buffer.memory.ptr, (int)s->buffer.allocated); } NK_API void nk_str_delete_runes(struct nk_str *s, int pos, int len) { char *temp; nk_rune unicode; char *begin; char *end; int unused; NK_ASSERT(s); NK_ASSERT(s->len >= pos + len); if (s->len < pos + len) len = NK_CLAMP(0, (s->len - pos), s->len); if (!len) return; temp = (char *)s->buffer.memory.ptr; begin = nk_str_at_rune(s, pos, &unicode, &unused); if (!begin) return; s->buffer.memory.ptr = begin; end = nk_str_at_rune(s, len, &unicode, &unused); s->buffer.memory.ptr = temp; if (!end) return; nk_str_delete_chars(s, (int)(begin - temp), (int)(end - begin)); } NK_API char* nk_str_at_char(struct nk_str *s, int pos) { NK_ASSERT(s); if (!s || pos > (int)s->buffer.allocated) return 0; return nk_ptr_add(char, s->buffer.memory.ptr, pos); } NK_API char* nk_str_at_rune(struct nk_str *str, int pos, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; char *text; int text_len; NK_ASSERT(str); NK_ASSERT(unicode); NK_ASSERT(len); if (!str || !unicode || !len) return 0; if (pos < 0) { *unicode = 0; *len = 0; return 0; } text = (char*)str->buffer.memory.ptr; text_len = (int)str->buffer.allocated; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == pos) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != pos) return 0; return text + src_len; } NK_API const char* nk_str_at_char_const(const struct nk_str *s, int pos) { NK_ASSERT(s); if (!s || pos > (int)s->buffer.allocated) return 0; return nk_ptr_add(char, s->buffer.memory.ptr, pos); } NK_API const char* nk_str_at_const(const struct nk_str *str, int pos, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; char *text; int text_len; NK_ASSERT(str); NK_ASSERT(unicode); NK_ASSERT(len); if (!str || !unicode || !len) return 0; if (pos < 0) { *unicode = 0; *len = 0; return 0; } text = (char*)str->buffer.memory.ptr; text_len = (int)str->buffer.allocated; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == pos) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != pos) return 0; return text + src_len; } NK_API nk_rune nk_str_rune_at(const struct nk_str *str, int pos) { int len; nk_rune unicode = 0; nk_str_at_const(str, pos, &unicode, &len); return unicode; } NK_API char* nk_str_get(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (char*)s->buffer.memory.ptr; } NK_API const char* nk_str_get_const(const struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (const char*)s->buffer.memory.ptr; } NK_API int nk_str_len(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return s->len; } NK_API int nk_str_len_char(struct nk_str *s) { NK_ASSERT(s); if (!s || !s->len || !s->buffer.allocated) return 0; return (int)s->buffer.allocated; } NK_API void nk_str_clear(struct nk_str *str) { NK_ASSERT(str); nk_buffer_clear(&str->buffer); str->len = 0; } NK_API void nk_str_free(struct nk_str *str) { NK_ASSERT(str); nk_buffer_free(&str->buffer); str->len = 0; } ================================================ FILE: src/nuklear_style.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * STYLE * * ===============================================================*/ NK_API void nk_style_default(struct nk_context *ctx){nk_style_from_table(ctx, 0);} #define NK_COLOR_MAP(NK_COLOR)\ NK_COLOR(NK_COLOR_TEXT, 175,175,175,255) \ NK_COLOR(NK_COLOR_WINDOW, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_HEADER, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_BORDER, 65, 65, 65, 255) \ NK_COLOR(NK_COLOR_BUTTON, 50, 50, 50, 255) \ NK_COLOR(NK_COLOR_BUTTON_HOVER, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_BUTTON_ACTIVE, 35, 35, 35, 255) \ NK_COLOR(NK_COLOR_TOGGLE, 100,100,100,255) \ NK_COLOR(NK_COLOR_TOGGLE_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_TOGGLE_CURSOR, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_SELECT, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_SELECT_ACTIVE, 35, 35, 35,255) \ NK_COLOR(NK_COLOR_SLIDER, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR, 100,100,100,255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_SLIDER_CURSOR_ACTIVE, 150,150,150,255) \ NK_COLOR(NK_COLOR_PROPERTY, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_EDIT, 38, 38, 38, 255) \ NK_COLOR(NK_COLOR_EDIT_CURSOR, 175,175,175,255) \ NK_COLOR(NK_COLOR_COMBO, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_CHART, 120,120,120,255) \ NK_COLOR(NK_COLOR_CHART_COLOR, 45, 45, 45, 255) \ NK_COLOR(NK_COLOR_CHART_COLOR_HIGHLIGHT, 255, 0, 0, 255) \ NK_COLOR(NK_COLOR_SCROLLBAR, 40, 40, 40, 255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR, 100,100,100,255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR_HOVER, 120,120,120,255) \ NK_COLOR(NK_COLOR_SCROLLBAR_CURSOR_ACTIVE, 150,150,150,255) \ NK_COLOR(NK_COLOR_TAB_HEADER, 40, 40, 40,255) NK_GLOBAL const struct nk_color nk_default_color_style[NK_COLOR_COUNT] = { #define NK_COLOR(a,b,c,d,e) {b,c,d,e}, NK_COLOR_MAP(NK_COLOR) #undef NK_COLOR }; NK_GLOBAL const char *nk_color_names[NK_COLOR_COUNT] = { #define NK_COLOR(a,b,c,d,e) #a, NK_COLOR_MAP(NK_COLOR) #undef NK_COLOR }; NK_API const char* nk_style_get_color_by_name(enum nk_style_colors c) { return nk_color_names[c]; } NK_API struct nk_style_item nk_style_item_image(struct nk_image img) { struct nk_style_item i; i.type = NK_STYLE_ITEM_IMAGE; i.data.image = img; return i; } NK_API struct nk_style_item nk_style_item_color(struct nk_color col) { struct nk_style_item i; i.type = NK_STYLE_ITEM_COLOR; i.data.color = col; return i; } NK_API struct nk_style_item nk_style_item_hide(void) { struct nk_style_item i; i.type = NK_STYLE_ITEM_COLOR; i.data.color = nk_rgba(0,0,0,0); return i; } NK_API void nk_style_from_table(struct nk_context *ctx, const struct nk_color *table) { struct nk_style *style; struct nk_style_text *text; struct nk_style_button *button; struct nk_style_toggle *toggle; struct nk_style_selectable *select; struct nk_style_slider *slider; struct nk_style_progress *prog; struct nk_style_scrollbar *scroll; struct nk_style_edit *edit; struct nk_style_property *property; struct nk_style_combo *combo; struct nk_style_chart *chart; struct nk_style_tab *tab; struct nk_style_window *win; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; table = (!table) ? nk_default_color_style: table; /* default text */ text = &style->text; text->color = table[NK_COLOR_TEXT]; text->padding = nk_vec2(0,0); /* default button */ button = &style->button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_BUTTON]); button->hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]); button->active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]); button->border_color = table[NK_COLOR_BORDER]; button->text_background = table[NK_COLOR_BUTTON]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->image_padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f, 0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 4.0f; button->draw_begin = 0; button->draw_end = 0; /* contextual button */ button = &style->contextual_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]); button->active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]); button->border_color = table[NK_COLOR_WINDOW]; button->text_background = table[NK_COLOR_WINDOW]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* menu button */ button = &style->menu_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_WINDOW]); button->active = nk_style_item_color(table[NK_COLOR_WINDOW]); button->border_color = table[NK_COLOR_WINDOW]; button->text_background = table[NK_COLOR_WINDOW]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 1.0f; button->draw_begin = 0; button->draw_end = 0; /* checkbox toggle */ toggle = &style->checkbox; nk_zero_struct(*toggle); toggle->normal = nk_style_item_color(table[NK_COLOR_TOGGLE]); toggle->hover = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->active = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->cursor_normal = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->cursor_hover = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->userdata = nk_handle_ptr(0); toggle->text_background = table[NK_COLOR_WINDOW]; toggle->text_normal = table[NK_COLOR_TEXT]; toggle->text_hover = table[NK_COLOR_TEXT]; toggle->text_active = table[NK_COLOR_TEXT]; toggle->padding = nk_vec2(2.0f, 2.0f); toggle->touch_padding = nk_vec2(0,0); toggle->border_color = nk_rgba(0,0,0,0); toggle->border = 0.0f; toggle->spacing = 4; /* option toggle */ toggle = &style->option; nk_zero_struct(*toggle); toggle->normal = nk_style_item_color(table[NK_COLOR_TOGGLE]); toggle->hover = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->active = nk_style_item_color(table[NK_COLOR_TOGGLE_HOVER]); toggle->cursor_normal = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->cursor_hover = nk_style_item_color(table[NK_COLOR_TOGGLE_CURSOR]); toggle->userdata = nk_handle_ptr(0); toggle->text_background = table[NK_COLOR_WINDOW]; toggle->text_normal = table[NK_COLOR_TEXT]; toggle->text_hover = table[NK_COLOR_TEXT]; toggle->text_active = table[NK_COLOR_TEXT]; toggle->padding = nk_vec2(3.0f, 3.0f); toggle->touch_padding = nk_vec2(0,0); toggle->border_color = nk_rgba(0,0,0,0); toggle->border = 0.0f; toggle->spacing = 4; /* selectable */ select = &style->selectable; nk_zero_struct(*select); select->normal = nk_style_item_color(table[NK_COLOR_SELECT]); select->hover = nk_style_item_color(table[NK_COLOR_SELECT]); select->pressed = nk_style_item_color(table[NK_COLOR_SELECT]); select->normal_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->hover_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->pressed_active = nk_style_item_color(table[NK_COLOR_SELECT_ACTIVE]); select->text_normal = table[NK_COLOR_TEXT]; select->text_hover = table[NK_COLOR_TEXT]; select->text_pressed = table[NK_COLOR_TEXT]; select->text_normal_active = table[NK_COLOR_TEXT]; select->text_hover_active = table[NK_COLOR_TEXT]; select->text_pressed_active = table[NK_COLOR_TEXT]; select->padding = nk_vec2(2.0f,2.0f); select->image_padding = nk_vec2(2.0f,2.0f); select->touch_padding = nk_vec2(0,0); select->userdata = nk_handle_ptr(0); select->rounding = 0.0f; select->draw_begin = 0; select->draw_end = 0; /* slider */ slider = &style->slider; nk_zero_struct(*slider); slider->normal = nk_style_item_hide(); slider->hover = nk_style_item_hide(); slider->active = nk_style_item_hide(); slider->bar_normal = table[NK_COLOR_SLIDER]; slider->bar_hover = table[NK_COLOR_SLIDER]; slider->bar_active = table[NK_COLOR_SLIDER]; slider->bar_filled = table[NK_COLOR_SLIDER_CURSOR]; slider->cursor_normal = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR]); slider->cursor_hover = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_HOVER]); slider->cursor_active = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_ACTIVE]); slider->inc_symbol = NK_SYMBOL_TRIANGLE_RIGHT; slider->dec_symbol = NK_SYMBOL_TRIANGLE_LEFT; slider->cursor_size = nk_vec2(16,16); slider->padding = nk_vec2(2,2); slider->spacing = nk_vec2(2,2); slider->userdata = nk_handle_ptr(0); slider->show_buttons = nk_false; slider->bar_height = 8; slider->rounding = 0; slider->draw_begin = 0; slider->draw_end = 0; /* slider buttons */ button = &style->slider.inc_button; button->normal = nk_style_item_color(nk_rgb(40,40,40)); button->hover = nk_style_item_color(nk_rgb(42,42,42)); button->active = nk_style_item_color(nk_rgb(44,44,44)); button->border_color = nk_rgb(65,65,65); button->text_background = nk_rgb(40,40,40); button->text_normal = nk_rgb(175,175,175); button->text_hover = nk_rgb(175,175,175); button->text_active = nk_rgb(175,175,175); button->padding = nk_vec2(8.0f,8.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->slider.dec_button = style->slider.inc_button; /* progressbar */ prog = &style->progress; nk_zero_struct(*prog); prog->normal = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->hover = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->active = nk_style_item_color(table[NK_COLOR_SLIDER]); prog->cursor_normal = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR]); prog->cursor_hover = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_HOVER]); prog->cursor_active = nk_style_item_color(table[NK_COLOR_SLIDER_CURSOR_ACTIVE]); prog->border_color = nk_rgba(0,0,0,0); prog->cursor_border_color = nk_rgba(0,0,0,0); prog->userdata = nk_handle_ptr(0); prog->padding = nk_vec2(4,4); prog->rounding = 0; prog->border = 0; prog->cursor_rounding = 0; prog->cursor_border = 0; prog->draw_begin = 0; prog->draw_end = 0; /* scrollbars */ scroll = &style->scrollh; nk_zero_struct(*scroll); scroll->normal = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->hover = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->active = nk_style_item_color(table[NK_COLOR_SCROLLBAR]); scroll->cursor_normal = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR]); scroll->cursor_hover = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR_HOVER]); scroll->cursor_active = nk_style_item_color(table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE]); scroll->dec_symbol = NK_SYMBOL_CIRCLE_SOLID; scroll->inc_symbol = NK_SYMBOL_CIRCLE_SOLID; scroll->userdata = nk_handle_ptr(0); scroll->border_color = table[NK_COLOR_SCROLLBAR]; scroll->cursor_border_color = table[NK_COLOR_SCROLLBAR]; scroll->padding = nk_vec2(0,0); scroll->show_buttons = nk_false; scroll->border = 0; scroll->rounding = 0; scroll->border_cursor = 0; scroll->rounding_cursor = 0; scroll->draw_begin = 0; scroll->draw_end = 0; style->scrollv = style->scrollh; /* scrollbars buttons */ button = &style->scrollh.inc_button; button->normal = nk_style_item_color(nk_rgb(40,40,40)); button->hover = nk_style_item_color(nk_rgb(42,42,42)); button->active = nk_style_item_color(nk_rgb(44,44,44)); button->border_color = nk_rgb(65,65,65); button->text_background = nk_rgb(40,40,40); button->text_normal = nk_rgb(175,175,175); button->text_hover = nk_rgb(175,175,175); button->text_active = nk_rgb(175,175,175); button->padding = nk_vec2(4.0f,4.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 1.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->scrollh.dec_button = style->scrollh.inc_button; style->scrollv.inc_button = style->scrollh.inc_button; style->scrollv.dec_button = style->scrollh.inc_button; /* edit */ edit = &style->edit; nk_zero_struct(*edit); edit->normal = nk_style_item_color(table[NK_COLOR_EDIT]); edit->hover = nk_style_item_color(table[NK_COLOR_EDIT]); edit->active = nk_style_item_color(table[NK_COLOR_EDIT]); edit->cursor_normal = table[NK_COLOR_TEXT]; edit->cursor_hover = table[NK_COLOR_TEXT]; edit->cursor_text_normal= table[NK_COLOR_EDIT]; edit->cursor_text_hover = table[NK_COLOR_EDIT]; edit->border_color = table[NK_COLOR_BORDER]; edit->text_normal = table[NK_COLOR_TEXT]; edit->text_hover = table[NK_COLOR_TEXT]; edit->text_active = table[NK_COLOR_TEXT]; edit->selected_normal = table[NK_COLOR_TEXT]; edit->selected_hover = table[NK_COLOR_TEXT]; edit->selected_text_normal = table[NK_COLOR_EDIT]; edit->selected_text_hover = table[NK_COLOR_EDIT]; edit->scrollbar_size = nk_vec2(10,10); edit->scrollbar = style->scrollv; edit->padding = nk_vec2(4,4); edit->row_padding = 2; edit->cursor_size = 4; edit->border = 1; edit->rounding = 0; /* property */ property = &style->property; nk_zero_struct(*property); property->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); property->border_color = table[NK_COLOR_BORDER]; property->label_normal = table[NK_COLOR_TEXT]; property->label_hover = table[NK_COLOR_TEXT]; property->label_active = table[NK_COLOR_TEXT]; property->sym_left = NK_SYMBOL_TRIANGLE_LEFT; property->sym_right = NK_SYMBOL_TRIANGLE_RIGHT; property->userdata = nk_handle_ptr(0); property->padding = nk_vec2(4,4); property->border = 1; property->rounding = 10; property->draw_begin = 0; property->draw_end = 0; /* property buttons */ button = &style->property.dec_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_PROPERTY]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->property.inc_button = style->property.dec_button; /* property edit */ edit = &style->property.edit; nk_zero_struct(*edit); edit->normal = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->hover = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->active = nk_style_item_color(table[NK_COLOR_PROPERTY]); edit->border_color = nk_rgba(0,0,0,0); edit->cursor_normal = table[NK_COLOR_TEXT]; edit->cursor_hover = table[NK_COLOR_TEXT]; edit->cursor_text_normal= table[NK_COLOR_EDIT]; edit->cursor_text_hover = table[NK_COLOR_EDIT]; edit->text_normal = table[NK_COLOR_TEXT]; edit->text_hover = table[NK_COLOR_TEXT]; edit->text_active = table[NK_COLOR_TEXT]; edit->selected_normal = table[NK_COLOR_TEXT]; edit->selected_hover = table[NK_COLOR_TEXT]; edit->selected_text_normal = table[NK_COLOR_EDIT]; edit->selected_text_hover = table[NK_COLOR_EDIT]; edit->padding = nk_vec2(0,0); edit->cursor_size = 8; edit->border = 0; edit->rounding = 0; /* chart */ chart = &style->chart; nk_zero_struct(*chart); chart->background = nk_style_item_color(table[NK_COLOR_CHART]); chart->border_color = table[NK_COLOR_BORDER]; chart->selected_color = table[NK_COLOR_CHART_COLOR_HIGHLIGHT]; chart->color = table[NK_COLOR_CHART_COLOR]; chart->padding = nk_vec2(4,4); chart->border = 0; chart->rounding = 0; /* combo */ combo = &style->combo; combo->normal = nk_style_item_color(table[NK_COLOR_COMBO]); combo->hover = nk_style_item_color(table[NK_COLOR_COMBO]); combo->active = nk_style_item_color(table[NK_COLOR_COMBO]); combo->border_color = table[NK_COLOR_BORDER]; combo->label_normal = table[NK_COLOR_TEXT]; combo->label_hover = table[NK_COLOR_TEXT]; combo->label_active = table[NK_COLOR_TEXT]; combo->sym_normal = NK_SYMBOL_TRIANGLE_DOWN; combo->sym_hover = NK_SYMBOL_TRIANGLE_DOWN; combo->sym_active = NK_SYMBOL_TRIANGLE_DOWN; combo->content_padding = nk_vec2(4,4); combo->button_padding = nk_vec2(0,4); combo->spacing = nk_vec2(4,0); combo->border = 1; combo->rounding = 0; /* combo button */ button = &style->combo.button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_COMBO]); button->hover = nk_style_item_color(table[NK_COLOR_COMBO]); button->active = nk_style_item_color(table[NK_COLOR_COMBO]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_COMBO]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* tab */ tab = &style->tab; tab->background = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); tab->border_color = table[NK_COLOR_BORDER]; tab->text = table[NK_COLOR_TEXT]; tab->sym_minimize = NK_SYMBOL_TRIANGLE_RIGHT; tab->sym_maximize = NK_SYMBOL_TRIANGLE_DOWN; tab->padding = nk_vec2(4,4); tab->spacing = nk_vec2(4,4); tab->indent = 10.0f; tab->border = 1; tab->rounding = 0; /* tab button */ button = &style->tab.tab_minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_TAB_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_TAB_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->tab.tab_maximize_button =*button; /* node button */ button = &style->tab.node_minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_WINDOW]); button->hover = nk_style_item_color(table[NK_COLOR_WINDOW]); button->active = nk_style_item_color(table[NK_COLOR_WINDOW]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_TAB_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(2.0f,2.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; style->tab.node_maximize_button =*button; /* window header */ win = &style->window; win->header.align = NK_HEADER_RIGHT; win->header.close_symbol = NK_SYMBOL_X; win->header.minimize_symbol = NK_SYMBOL_MINUS; win->header.maximize_symbol = NK_SYMBOL_PLUS; win->header.normal = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.hover = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.active = nk_style_item_color(table[NK_COLOR_HEADER]); win->header.label_normal = table[NK_COLOR_TEXT]; win->header.label_hover = table[NK_COLOR_TEXT]; win->header.label_active = table[NK_COLOR_TEXT]; win->header.label_padding = nk_vec2(4,4); win->header.padding = nk_vec2(4,4); win->header.spacing = nk_vec2(0,0); /* window header close button */ button = &style->window.header.close_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* window header minimize button */ button = &style->window.header.minimize_button; nk_zero_struct(*button); button->normal = nk_style_item_color(table[NK_COLOR_HEADER]); button->hover = nk_style_item_color(table[NK_COLOR_HEADER]); button->active = nk_style_item_color(table[NK_COLOR_HEADER]); button->border_color = nk_rgba(0,0,0,0); button->text_background = table[NK_COLOR_HEADER]; button->text_normal = table[NK_COLOR_TEXT]; button->text_hover = table[NK_COLOR_TEXT]; button->text_active = table[NK_COLOR_TEXT]; button->padding = nk_vec2(0.0f,0.0f); button->touch_padding = nk_vec2(0.0f,0.0f); button->userdata = nk_handle_ptr(0); button->text_alignment = NK_TEXT_CENTERED; button->border = 0.0f; button->rounding = 0.0f; button->draw_begin = 0; button->draw_end = 0; /* window */ win->background = table[NK_COLOR_WINDOW]; win->fixed_background = nk_style_item_color(table[NK_COLOR_WINDOW]); win->border_color = table[NK_COLOR_BORDER]; win->popup_border_color = table[NK_COLOR_BORDER]; win->combo_border_color = table[NK_COLOR_BORDER]; win->contextual_border_color = table[NK_COLOR_BORDER]; win->menu_border_color = table[NK_COLOR_BORDER]; win->group_border_color = table[NK_COLOR_BORDER]; win->tooltip_border_color = table[NK_COLOR_BORDER]; win->scaler = nk_style_item_color(table[NK_COLOR_TEXT]); win->rounding = 0.0f; win->spacing = nk_vec2(4,4); win->scrollbar_size = nk_vec2(10,10); win->min_size = nk_vec2(64,64); win->combo_border = 1.0f; win->contextual_border = 1.0f; win->menu_border = 1.0f; win->group_border = 1.0f; win->tooltip_border = 1.0f; win->popup_border = 1.0f; win->border = 2.0f; win->min_row_height_padding = 8; win->padding = nk_vec2(4,4); win->group_padding = nk_vec2(4,4); win->popup_padding = nk_vec2(4,4); win->combo_padding = nk_vec2(4,4); win->contextual_padding = nk_vec2(4,4); win->menu_padding = nk_vec2(4,4); win->tooltip_padding = nk_vec2(4,4); } NK_API void nk_style_set_font(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; style->font = font; ctx->stacks.fonts.head = 0; if (ctx->current) nk_layout_reset_min_row_height(ctx); } NK_API int nk_style_push_font(struct nk_context *ctx, const struct nk_user_font *font) { struct nk_config_stack_user_font *font_stack; struct nk_config_stack_user_font_element *element; NK_ASSERT(ctx); if (!ctx) return 0; font_stack = &ctx->stacks.fonts; NK_ASSERT(font_stack->head < (int)NK_LEN(font_stack->elements)); if (font_stack->head >= (int)NK_LEN(font_stack->elements)) return 0; element = &font_stack->elements[font_stack->head++]; element->address = &ctx->style.font; element->old_value = ctx->style.font; ctx->style.font = font; return 1; } NK_API int nk_style_pop_font(struct nk_context *ctx) { struct nk_config_stack_user_font *font_stack; struct nk_config_stack_user_font_element *element; NK_ASSERT(ctx); if (!ctx) return 0; font_stack = &ctx->stacks.fonts; NK_ASSERT(font_stack->head > 0); if (font_stack->head < 1) return 0; element = &font_stack->elements[--font_stack->head]; *element->address = element->old_value; return 1; } #define NK_STYLE_PUSH_IMPLEMENATION(prefix, type, stack) \ nk_style_push_##type(struct nk_context *ctx, prefix##_##type *address, prefix##_##type value)\ {\ struct nk_config_stack_##type * type_stack;\ struct nk_config_stack_##type##_element *element;\ NK_ASSERT(ctx);\ if (!ctx) return 0;\ type_stack = &ctx->stacks.stack;\ NK_ASSERT(type_stack->head < (int)NK_LEN(type_stack->elements));\ if (type_stack->head >= (int)NK_LEN(type_stack->elements))\ return 0;\ element = &type_stack->elements[type_stack->head++];\ element->address = address;\ element->old_value = *address;\ *address = value;\ return 1;\ } #define NK_STYLE_POP_IMPLEMENATION(type, stack) \ nk_style_pop_##type(struct nk_context *ctx)\ {\ struct nk_config_stack_##type *type_stack;\ struct nk_config_stack_##type##_element *element;\ NK_ASSERT(ctx);\ if (!ctx) return 0;\ type_stack = &ctx->stacks.stack;\ NK_ASSERT(type_stack->head > 0);\ if (type_stack->head < 1)\ return 0;\ element = &type_stack->elements[--type_stack->head];\ *element->address = element->old_value;\ return 1;\ } NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk, style_item, style_items) NK_API int NK_STYLE_PUSH_IMPLEMENATION(nk,float, floats) NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk, vec2, vectors) NK_API int NK_STYLE_PUSH_IMPLEMENATION(nk,flags, flags) NK_API int NK_STYLE_PUSH_IMPLEMENATION(struct nk,color, colors) NK_API int NK_STYLE_POP_IMPLEMENATION(style_item, style_items) NK_API int NK_STYLE_POP_IMPLEMENATION(float,floats) NK_API int NK_STYLE_POP_IMPLEMENATION(vec2, vectors) NK_API int NK_STYLE_POP_IMPLEMENATION(flags,flags) NK_API int NK_STYLE_POP_IMPLEMENATION(color,colors) NK_API int nk_style_set_cursor(struct nk_context *ctx, enum nk_style_cursor c) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return 0; style = &ctx->style; if (style->cursors[c]) { style->cursor_active = style->cursors[c]; return 1; } return 0; } NK_API void nk_style_show_cursor(struct nk_context *ctx) { ctx->style.cursor_visible = nk_true; } NK_API void nk_style_hide_cursor(struct nk_context *ctx) { ctx->style.cursor_visible = nk_false; } NK_API void nk_style_load_cursor(struct nk_context *ctx, enum nk_style_cursor cursor, const struct nk_cursor *c) { struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; style->cursors[cursor] = c; } NK_API void nk_style_load_all_cursors(struct nk_context *ctx, struct nk_cursor *cursors) { int i = 0; struct nk_style *style; NK_ASSERT(ctx); if (!ctx) return; style = &ctx->style; for (i = 0; i < NK_CURSOR_COUNT; ++i) style->cursors[i] = &cursors[i]; style->cursor_visible = nk_true; } ================================================ FILE: src/nuklear_table.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TABLE * * ===============================================================*/ NK_LIB struct nk_table* nk_create_table(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; nk_zero_struct(*elem); return &elem->data.tbl; } NK_LIB void nk_free_table(struct nk_context *ctx, struct nk_table *tbl) { union nk_page_data *pd = NK_CONTAINER_OF(tbl, union nk_page_data, tbl); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe); } NK_LIB void nk_push_table(struct nk_window *win, struct nk_table *tbl) { if (!win->tables) { win->tables = tbl; tbl->next = 0; tbl->prev = 0; tbl->size = 0; win->table_count = 1; return; } win->tables->prev = tbl; tbl->next = win->tables; tbl->prev = 0; tbl->size = 0; win->tables = tbl; win->table_count++; } NK_LIB void nk_remove_table(struct nk_window *win, struct nk_table *tbl) { if (win->tables == tbl) win->tables = tbl->next; if (tbl->next) tbl->next->prev = tbl->prev; if (tbl->prev) tbl->prev->next = tbl->next; tbl->next = 0; tbl->prev = 0; } NK_LIB nk_uint* nk_add_value(struct nk_context *ctx, struct nk_window *win, nk_hash name, nk_uint value) { NK_ASSERT(ctx); NK_ASSERT(win); if (!win || !ctx) return 0; if (!win->tables || win->tables->size >= NK_VALUE_PAGE_CAPACITY) { struct nk_table *tbl = nk_create_table(ctx); NK_ASSERT(tbl); if (!tbl) return 0; nk_push_table(win, tbl); } win->tables->seq = win->seq; win->tables->keys[win->tables->size] = name; win->tables->values[win->tables->size] = value; return &win->tables->values[win->tables->size++]; } NK_LIB nk_uint* nk_find_value(struct nk_window *win, nk_hash name) { struct nk_table *iter = win->tables; while (iter) { unsigned int i = 0; unsigned int size = iter->size; for (i = 0; i < size; ++i) { if (iter->keys[i] == name) { iter->seq = win->seq; return &iter->values[i]; } } size = NK_VALUE_PAGE_CAPACITY; iter = iter->next; } return 0; } ================================================ FILE: src/nuklear_text.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TEXT * * ===============================================================*/ NK_LIB void nk_widget_text(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, nk_flags a, const struct nk_user_font *f) { struct nk_rect label; float text_width; NK_ASSERT(o); NK_ASSERT(t); if (!o || !t) return; b.h = NK_MAX(b.h, 2 * t->padding.y); label.x = 0; label.w = 0; label.y = b.y + t->padding.y; label.h = NK_MIN(f->height, b.h - 2 * t->padding.y); text_width = f->width(f->userdata, f->height, (const char*)string, len); text_width += (2.0f * t->padding.x); /* align in x-axis */ if (a & NK_TEXT_ALIGN_LEFT) { label.x = b.x + t->padding.x; label.w = NK_MAX(0, b.w - 2 * t->padding.x); } else if (a & NK_TEXT_ALIGN_CENTERED) { label.w = NK_MAX(1, 2 * t->padding.x + (float)text_width); label.x = (b.x + t->padding.x + ((b.w - 2 * t->padding.x) - label.w) / 2); label.x = NK_MAX(b.x + t->padding.x, label.x); label.w = NK_MIN(b.x + b.w, label.x + label.w); if (label.w >= label.x) label.w -= label.x; } else if (a & NK_TEXT_ALIGN_RIGHT) { label.x = NK_MAX(b.x + t->padding.x, (b.x + b.w) - (2 * t->padding.x + (float)text_width)); label.w = (float)text_width + 2 * t->padding.x; } else return; /* align in y-axis */ if (a & NK_TEXT_ALIGN_MIDDLE) { label.y = b.y + b.h/2.0f - (float)f->height/2.0f; label.h = NK_MAX(b.h/2.0f, b.h - (b.h/2.0f + f->height/2.0f)); } else if (a & NK_TEXT_ALIGN_BOTTOM) { label.y = b.y + b.h - f->height; label.h = f->height; } nk_draw_text(o, label, (const char*)string, len, f, t->background, t->text); } NK_LIB void nk_widget_text_wrap(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, const struct nk_user_font *f) { float width; int glyphs = 0; int fitting = 0; int done = 0; struct nk_rect line; struct nk_text text; NK_INTERN nk_rune seperator[] = {' '}; NK_ASSERT(o); NK_ASSERT(t); if (!o || !t) return; text.padding = nk_vec2(0,0); text.background = t->background; text.text = t->text; b.w = NK_MAX(b.w, 2 * t->padding.x); b.h = NK_MAX(b.h, 2 * t->padding.y); b.h = b.h - 2 * t->padding.y; line.x = b.x + t->padding.x; line.y = b.y + t->padding.y; line.w = b.w - 2 * t->padding.x; line.h = 2 * t->padding.y + f->height; fitting = nk_text_clamp(f, string, len, line.w, &glyphs, &width, seperator,NK_LEN(seperator)); while (done < len) { if (!fitting || line.y + line.h >= (b.y + b.h)) break; nk_widget_text(o, line, &string[done], fitting, &text, NK_TEXT_LEFT, f); done += fitting; line.y += f->height + 2 * t->padding.y; fitting = nk_text_clamp(f, &string[done], len - done, line.w, &glyphs, &width, seperator,NK_LEN(seperator)); } } NK_API void nk_text_colored(struct nk_context *ctx, const char *str, int len, nk_flags alignment, struct nk_color color) { struct nk_window *win; const struct nk_style *style; struct nk_vec2 item_padding; struct nk_rect bounds; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; style = &ctx->style; nk_panel_alloc_space(&bounds, ctx); item_padding = style->text.padding; text.padding.x = item_padding.x; text.padding.y = item_padding.y; text.background = style->window.background; text.text = color; nk_widget_text(&win->buffer, bounds, str, len, &text, alignment, style->font); } NK_API void nk_text_wrap_colored(struct nk_context *ctx, const char *str, int len, struct nk_color color) { struct nk_window *win; const struct nk_style *style; struct nk_vec2 item_padding; struct nk_rect bounds; struct nk_text text; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; style = &ctx->style; nk_panel_alloc_space(&bounds, ctx); item_padding = style->text.padding; text.padding.x = item_padding.x; text.padding.y = item_padding.y; text.background = style->window.background; text.text = color; nk_widget_text_wrap(&win->buffer, bounds, str, len, &text, style->font); } #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_labelf_colored(struct nk_context *ctx, nk_flags flags, struct nk_color color, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv_colored(ctx, flags, color, fmt, args); va_end(args); } NK_API void nk_labelf_colored_wrap(struct nk_context *ctx, struct nk_color color, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv_colored_wrap(ctx, color, fmt, args); va_end(args); } NK_API void nk_labelf(struct nk_context *ctx, nk_flags flags, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_labelfv(ctx, flags, fmt, args); va_end(args); } NK_API void nk_labelf_wrap(struct nk_context *ctx, const char *fmt,...) { va_list args; va_start(args, fmt); nk_labelfv_wrap(ctx, fmt, args); va_end(args); } NK_API void nk_labelfv_colored(struct nk_context *ctx, nk_flags flags, struct nk_color color, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_colored(ctx, buf, flags, color); } NK_API void nk_labelfv_colored_wrap(struct nk_context *ctx, struct nk_color color, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_colored_wrap(ctx, buf, color); } NK_API void nk_labelfv(struct nk_context *ctx, nk_flags flags, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label(ctx, buf, flags); } NK_API void nk_labelfv_wrap(struct nk_context *ctx, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_label_wrap(ctx, buf); } NK_API void nk_value_bool(struct nk_context *ctx, const char *prefix, int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %s", prefix, ((value) ? "true": "false")); } NK_API void nk_value_int(struct nk_context *ctx, const char *prefix, int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %d", prefix, value); } NK_API void nk_value_uint(struct nk_context *ctx, const char *prefix, unsigned int value) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: %u", prefix, value); } NK_API void nk_value_float(struct nk_context *ctx, const char *prefix, float value) { double double_value = (double)value; nk_labelf(ctx, NK_TEXT_LEFT, "%s: %.3f", prefix, double_value); } NK_API void nk_value_color_byte(struct nk_context *ctx, const char *p, struct nk_color c) { nk_labelf(ctx, NK_TEXT_LEFT, "%s: (%d, %d, %d, %d)", p, c.r, c.g, c.b, c.a); } NK_API void nk_value_color_float(struct nk_context *ctx, const char *p, struct nk_color color) { double c[4]; nk_color_dv(c, color); nk_labelf(ctx, NK_TEXT_LEFT, "%s: (%.2f, %.2f, %.2f, %.2f)", p, c[0], c[1], c[2], c[3]); } NK_API void nk_value_color_hex(struct nk_context *ctx, const char *prefix, struct nk_color color) { char hex[16]; nk_color_hex_rgba(hex, color); nk_labelf(ctx, NK_TEXT_LEFT, "%s: %s", prefix, hex); } #endif NK_API void nk_text(struct nk_context *ctx, const char *str, int len, nk_flags alignment) { NK_ASSERT(ctx); if (!ctx) return; nk_text_colored(ctx, str, len, alignment, ctx->style.text.color); } NK_API void nk_text_wrap(struct nk_context *ctx, const char *str, int len) { NK_ASSERT(ctx); if (!ctx) return; nk_text_wrap_colored(ctx, str, len, ctx->style.text.color); } NK_API void nk_label(struct nk_context *ctx, const char *str, nk_flags alignment) { nk_text(ctx, str, nk_strlen(str), alignment); } NK_API void nk_label_colored(struct nk_context *ctx, const char *str, nk_flags align, struct nk_color color) { nk_text_colored(ctx, str, nk_strlen(str), align, color); } NK_API void nk_label_wrap(struct nk_context *ctx, const char *str) { nk_text_wrap(ctx, str, nk_strlen(str)); } NK_API void nk_label_colored_wrap(struct nk_context *ctx, const char *str, struct nk_color color) { nk_text_wrap_colored(ctx, str, nk_strlen(str), color); } ================================================ FILE: src/nuklear_text_editor.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TEXT EDITOR * * ===============================================================*/ /* stb_textedit.h - v1.8 - public domain - Sean Barrett */ struct nk_text_find { float x,y; /* position of n'th character */ float height; /* height of line */ int first_char, length; /* first char of row, and length */ int prev_first; /*_ first char of previous row */ }; struct nk_text_edit_row { float x0,x1; /* starting x location, end x location (allows for align=right, etc) */ float baseline_y_delta; /* position of baseline relative to previous row's baseline*/ float ymin,ymax; /* height of row above and below baseline */ int num_chars; }; /* forward declarations */ NK_INTERN void nk_textedit_makeundo_delete(struct nk_text_edit*, int, int); NK_INTERN void nk_textedit_makeundo_insert(struct nk_text_edit*, int, int); NK_INTERN void nk_textedit_makeundo_replace(struct nk_text_edit*, int, int, int); #define NK_TEXT_HAS_SELECTION(s) ((s)->select_start != (s)->select_end) NK_INTERN float nk_textedit_get_width(const struct nk_text_edit *edit, int line_start, int char_id, const struct nk_user_font *font) { int len = 0; nk_rune unicode = 0; const char *str = nk_str_at_const(&edit->string, line_start + char_id, &unicode, &len); return font->width(font->userdata, font->height, str, len); } NK_INTERN void nk_textedit_layout_row(struct nk_text_edit_row *r, struct nk_text_edit *edit, int line_start_id, float row_height, const struct nk_user_font *font) { int l; int glyphs = 0; nk_rune unicode; const char *remaining; int len = nk_str_len_char(&edit->string); const char *end = nk_str_get_const(&edit->string) + len; const char *text = nk_str_at_const(&edit->string, line_start_id, &unicode, &l); const struct nk_vec2 size = nk_text_calculate_text_bounds(font, text, (int)(end - text), row_height, &remaining, 0, &glyphs, NK_STOP_ON_NEW_LINE); r->x0 = 0.0f; r->x1 = size.x; r->baseline_y_delta = size.y; r->ymin = 0.0f; r->ymax = size.y; r->num_chars = glyphs; } NK_INTERN int nk_textedit_locate_coord(struct nk_text_edit *edit, float x, float y, const struct nk_user_font *font, float row_height) { struct nk_text_edit_row r; int n = edit->string.len; float base_y = 0, prev_x; int i=0, k; r.x0 = r.x1 = 0; r.ymin = r.ymax = 0; r.num_chars = 0; /* search rows to find one that straddles 'y' */ while (i < n) { nk_textedit_layout_row(&r, edit, i, row_height, font); if (r.num_chars <= 0) return n; if (i==0 && y < base_y + r.ymin) return 0; if (y < base_y + r.ymax) break; i += r.num_chars; base_y += r.baseline_y_delta; } /* below all text, return 'after' last character */ if (i >= n) return n; /* check if it's before the beginning of the line */ if (x < r.x0) return i; /* check if it's before the end of the line */ if (x < r.x1) { /* search characters in row for one that straddles 'x' */ k = i; prev_x = r.x0; for (i=0; i < r.num_chars; ++i) { float w = nk_textedit_get_width(edit, k, i, font); if (x < prev_x+w) { if (x < prev_x+w/2) return k+i; else return k+i+1; } prev_x += w; } /* shouldn't happen, but if it does, fall through to end-of-line case */ } /* if the last character is a newline, return that. * otherwise return 'after' the last character */ if (nk_str_rune_at(&edit->string, i+r.num_chars-1) == '\n') return i+r.num_chars-1; else return i+r.num_chars; } NK_LIB void nk_textedit_click(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height) { /* API click: on mouse down, move the cursor to the clicked location, * and reset the selection */ state->cursor = nk_textedit_locate_coord(state, x, y, font, row_height); state->select_start = state->cursor; state->select_end = state->cursor; state->has_preferred_x = 0; } NK_LIB void nk_textedit_drag(struct nk_text_edit *state, float x, float y, const struct nk_user_font *font, float row_height) { /* API drag: on mouse drag, move the cursor and selection endpoint * to the clicked location */ int p = nk_textedit_locate_coord(state, x, y, font, row_height); if (state->select_start == state->select_end) state->select_start = state->cursor; state->cursor = state->select_end = p; } NK_INTERN void nk_textedit_find_charpos(struct nk_text_find *find, struct nk_text_edit *state, int n, int single_line, const struct nk_user_font *font, float row_height) { /* find the x/y location of a character, and remember info about the previous * row in case we get a move-up event (for page up, we'll have to rescan) */ struct nk_text_edit_row r; int prev_start = 0; int z = state->string.len; int i=0, first; nk_zero_struct(r); if (n == z) { /* if it's at the end, then find the last line -- simpler than trying to explicitly handle this case in the regular code */ nk_textedit_layout_row(&r, state, 0, row_height, font); if (single_line) { find->first_char = 0; find->length = z; } else { while (i < z) { prev_start = i; i += r.num_chars; nk_textedit_layout_row(&r, state, i, row_height, font); } find->first_char = i; find->length = r.num_chars; } find->x = r.x1; find->y = r.ymin; find->height = r.ymax - r.ymin; find->prev_first = prev_start; return; } /* search rows to find the one that straddles character n */ find->y = 0; for(;;) { nk_textedit_layout_row(&r, state, i, row_height, font); if (n < i + r.num_chars) break; prev_start = i; i += r.num_chars; find->y += r.baseline_y_delta; } find->first_char = first = i; find->length = r.num_chars; find->height = r.ymax - r.ymin; find->prev_first = prev_start; /* now scan to find xpos */ find->x = r.x0; for (i=0; first+i < n; ++i) find->x += nk_textedit_get_width(state, first, i, font); } NK_INTERN void nk_textedit_clamp(struct nk_text_edit *state) { /* make the selection/cursor state valid if client altered the string */ int n = state->string.len; if (NK_TEXT_HAS_SELECTION(state)) { if (state->select_start > n) state->select_start = n; if (state->select_end > n) state->select_end = n; /* if clamping forced them to be equal, move the cursor to match */ if (state->select_start == state->select_end) state->cursor = state->select_start; } if (state->cursor > n) state->cursor = n; } NK_API void nk_textedit_delete(struct nk_text_edit *state, int where, int len) { /* delete characters while updating undo */ nk_textedit_makeundo_delete(state, where, len); nk_str_delete_runes(&state->string, where, len); state->has_preferred_x = 0; } NK_API void nk_textedit_delete_selection(struct nk_text_edit *state) { /* delete the section */ nk_textedit_clamp(state); if (NK_TEXT_HAS_SELECTION(state)) { if (state->select_start < state->select_end) { nk_textedit_delete(state, state->select_start, state->select_end - state->select_start); state->select_end = state->cursor = state->select_start; } else { nk_textedit_delete(state, state->select_end, state->select_start - state->select_end); state->select_start = state->cursor = state->select_end; } state->has_preferred_x = 0; } } NK_INTERN void nk_textedit_sortselection(struct nk_text_edit *state) { /* canonicalize the selection so start <= end */ if (state->select_end < state->select_start) { int temp = state->select_end; state->select_end = state->select_start; state->select_start = temp; } } NK_INTERN void nk_textedit_move_to_first(struct nk_text_edit *state) { /* move cursor to first character of selection */ if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_sortselection(state); state->cursor = state->select_start; state->select_end = state->select_start; state->has_preferred_x = 0; } } NK_INTERN void nk_textedit_move_to_last(struct nk_text_edit *state) { /* move cursor to last character of selection */ if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_sortselection(state); nk_textedit_clamp(state); state->cursor = state->select_end; state->select_start = state->select_end; state->has_preferred_x = 0; } } NK_INTERN int nk_is_word_boundary( struct nk_text_edit *state, int idx) { int len; nk_rune c; if (idx <= 0) return 1; if (!nk_str_at_rune(&state->string, idx, &c, &len)) return 1; return (c == ' ' || c == '\t' ||c == 0x3000 || c == ',' || c == ';' || c == '(' || c == ')' || c == '{' || c == '}' || c == '[' || c == ']' || c == '|'); } NK_INTERN int nk_textedit_move_to_word_previous(struct nk_text_edit *state) { int c = state->cursor - 1; while( c >= 0 && !nk_is_word_boundary(state, c)) --c; if( c < 0 ) c = 0; return c; } NK_INTERN int nk_textedit_move_to_word_next(struct nk_text_edit *state) { const int len = state->string.len; int c = state->cursor+1; while( c < len && !nk_is_word_boundary(state, c)) ++c; if( c > len ) c = len; return c; } NK_INTERN void nk_textedit_prep_selection_at_cursor(struct nk_text_edit *state) { /* update selection and cursor to match each other */ if (!NK_TEXT_HAS_SELECTION(state)) state->select_start = state->select_end = state->cursor; else state->cursor = state->select_end; } NK_API int nk_textedit_cut(struct nk_text_edit *state) { /* API cut: delete selection */ if (state->mode == NK_TEXT_EDIT_MODE_VIEW) return 0; if (NK_TEXT_HAS_SELECTION(state)) { nk_textedit_delete_selection(state); /* implicitly clamps */ state->has_preferred_x = 0; return 1; } return 0; } NK_API int nk_textedit_paste(struct nk_text_edit *state, char const *ctext, int len) { /* API paste: replace existing selection with passed-in text */ int glyphs; const char *text = (const char *) ctext; if (state->mode == NK_TEXT_EDIT_MODE_VIEW) return 0; /* if there's a selection, the paste should delete it */ nk_textedit_clamp(state); nk_textedit_delete_selection(state); /* try to insert the characters */ glyphs = nk_utf_len(ctext, len); if (nk_str_insert_text_char(&state->string, state->cursor, text, len)) { nk_textedit_makeundo_insert(state, state->cursor, glyphs); state->cursor += len; state->has_preferred_x = 0; return 1; } /* remove the undo since we didn't actually insert the characters */ if (state->undo.undo_point) --state->undo.undo_point; return 0; } NK_API void nk_textedit_text(struct nk_text_edit *state, const char *text, int total_len) { nk_rune unicode; int glyph_len; int text_len = 0; NK_ASSERT(state); NK_ASSERT(text); if (!text || !total_len || state->mode == NK_TEXT_EDIT_MODE_VIEW) return; glyph_len = nk_utf_decode(text, &unicode, total_len); while ((text_len < total_len) && glyph_len) { /* don't insert a backward delete, just process the event */ if (unicode == 127) goto next; /* can't add newline in single-line mode */ if (unicode == '\n' && state->single_line) goto next; /* filter incoming text */ if (state->filter && !state->filter(state, unicode)) goto next; if (!NK_TEXT_HAS_SELECTION(state) && state->cursor < state->string.len) { if (state->mode == NK_TEXT_EDIT_MODE_REPLACE) { nk_textedit_makeundo_replace(state, state->cursor, 1, 1); nk_str_delete_runes(&state->string, state->cursor, 1); } if (nk_str_insert_text_utf8(&state->string, state->cursor, text+text_len, 1)) { ++state->cursor; state->has_preferred_x = 0; } } else { nk_textedit_delete_selection(state); /* implicitly clamps */ if (nk_str_insert_text_utf8(&state->string, state->cursor, text+text_len, 1)) { nk_textedit_makeundo_insert(state, state->cursor, 1); ++state->cursor; state->has_preferred_x = 0; } } next: text_len += glyph_len; glyph_len = nk_utf_decode(text + text_len, &unicode, total_len-text_len); } } NK_LIB void nk_textedit_key(struct nk_text_edit *state, enum nk_keys key, int shift_mod, const struct nk_user_font *font, float row_height) { retry: switch (key) { case NK_KEY_NONE: case NK_KEY_CTRL: case NK_KEY_ENTER: case NK_KEY_SHIFT: case NK_KEY_TAB: case NK_KEY_COPY: case NK_KEY_CUT: case NK_KEY_PASTE: case NK_KEY_MAX: default: break; case NK_KEY_TEXT_UNDO: nk_textedit_undo(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_REDO: nk_textedit_redo(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_SELECT_ALL: nk_textedit_select_all(state); state->has_preferred_x = 0; break; case NK_KEY_TEXT_INSERT_MODE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) state->mode = NK_TEXT_EDIT_MODE_INSERT; break; case NK_KEY_TEXT_REPLACE_MODE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) state->mode = NK_TEXT_EDIT_MODE_REPLACE; break; case NK_KEY_TEXT_RESET_MODE: if (state->mode == NK_TEXT_EDIT_MODE_INSERT || state->mode == NK_TEXT_EDIT_MODE_REPLACE) state->mode = NK_TEXT_EDIT_MODE_VIEW; break; case NK_KEY_LEFT: if (shift_mod) { nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); /* move selection left */ if (state->select_end > 0) --state->select_end; state->cursor = state->select_end; state->has_preferred_x = 0; } else { /* if currently there's a selection, * move cursor to start of selection */ if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); else if (state->cursor > 0) --state->cursor; state->has_preferred_x = 0; } break; case NK_KEY_RIGHT: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); /* move selection right */ ++state->select_end; nk_textedit_clamp(state); state->cursor = state->select_end; state->has_preferred_x = 0; } else { /* if currently there's a selection, * move cursor to end of selection */ if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); else ++state->cursor; nk_textedit_clamp(state); state->has_preferred_x = 0; } break; case NK_KEY_TEXT_WORD_LEFT: if (shift_mod) { if( !NK_TEXT_HAS_SELECTION( state ) ) nk_textedit_prep_selection_at_cursor(state); state->cursor = nk_textedit_move_to_word_previous(state); state->select_end = state->cursor; nk_textedit_clamp(state ); } else { if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); else { state->cursor = nk_textedit_move_to_word_previous(state); nk_textedit_clamp(state ); } } break; case NK_KEY_TEXT_WORD_RIGHT: if (shift_mod) { if( !NK_TEXT_HAS_SELECTION( state ) ) nk_textedit_prep_selection_at_cursor(state); state->cursor = nk_textedit_move_to_word_next(state); state->select_end = state->cursor; nk_textedit_clamp(state); } else { if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); else { state->cursor = nk_textedit_move_to_word_next(state); nk_textedit_clamp(state ); } } break; case NK_KEY_DOWN: { struct nk_text_find find; struct nk_text_edit_row row; int i, sel = shift_mod; if (state->single_line) { /* on windows, up&down in single-line behave like left&right */ key = NK_KEY_RIGHT; goto retry; } if (sel) nk_textedit_prep_selection_at_cursor(state); else if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_last(state); /* compute current position of cursor point */ nk_textedit_clamp(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); /* now find character position down a row */ if (find.length) { float x; float goal_x = state->has_preferred_x ? state->preferred_x : find.x; int start = find.first_char + find.length; state->cursor = start; nk_textedit_layout_row(&row, state, state->cursor, row_height, font); x = row.x0; for (i=0; i < row.num_chars && x < row.x1; ++i) { float dx = nk_textedit_get_width(state, start, i, font); x += dx; if (x > goal_x) break; ++state->cursor; } nk_textedit_clamp(state); state->has_preferred_x = 1; state->preferred_x = goal_x; if (sel) state->select_end = state->cursor; } } break; case NK_KEY_UP: { struct nk_text_find find; struct nk_text_edit_row row; int i, sel = shift_mod; if (state->single_line) { /* on windows, up&down become left&right */ key = NK_KEY_LEFT; goto retry; } if (sel) nk_textedit_prep_selection_at_cursor(state); else if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_move_to_first(state); /* compute current position of cursor point */ nk_textedit_clamp(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); /* can only go up if there's a previous row */ if (find.prev_first != find.first_char) { /* now find character position up a row */ float x; float goal_x = state->has_preferred_x ? state->preferred_x : find.x; state->cursor = find.prev_first; nk_textedit_layout_row(&row, state, state->cursor, row_height, font); x = row.x0; for (i=0; i < row.num_chars && x < row.x1; ++i) { float dx = nk_textedit_get_width(state, find.prev_first, i, font); x += dx; if (x > goal_x) break; ++state->cursor; } nk_textedit_clamp(state); state->has_preferred_x = 1; state->preferred_x = goal_x; if (sel) state->select_end = state->cursor; } } break; case NK_KEY_DEL: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) break; if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_delete_selection(state); else { int n = state->string.len; if (state->cursor < n) nk_textedit_delete(state, state->cursor, 1); } state->has_preferred_x = 0; break; case NK_KEY_BACKSPACE: if (state->mode == NK_TEXT_EDIT_MODE_VIEW) break; if (NK_TEXT_HAS_SELECTION(state)) nk_textedit_delete_selection(state); else { nk_textedit_clamp(state); if (state->cursor > 0) { nk_textedit_delete(state, state->cursor-1, 1); --state->cursor; } } state->has_preferred_x = 0; break; case NK_KEY_TEXT_START: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); state->cursor = state->select_end = 0; state->has_preferred_x = 0; } else { state->cursor = state->select_start = state->select_end = 0; state->has_preferred_x = 0; } break; case NK_KEY_TEXT_END: if (shift_mod) { nk_textedit_prep_selection_at_cursor(state); state->cursor = state->select_end = state->string.len; state->has_preferred_x = 0; } else { state->cursor = state->string.len; state->select_start = state->select_end = 0; state->has_preferred_x = 0; } break; case NK_KEY_TEXT_LINE_START: { if (shift_mod) { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); if (state->string.len && state->cursor == state->string.len) --state->cursor; nk_textedit_find_charpos(&find, state,state->cursor, state->single_line, font, row_height); state->cursor = state->select_end = find.first_char; state->has_preferred_x = 0; } else { struct nk_text_find find; if (state->string.len && state->cursor == state->string.len) --state->cursor; nk_textedit_clamp(state); nk_textedit_move_to_first(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->cursor = find.first_char; state->has_preferred_x = 0; } } break; case NK_KEY_TEXT_LINE_END: { if (shift_mod) { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_prep_selection_at_cursor(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->has_preferred_x = 0; state->cursor = find.first_char + find.length; if (find.length > 0 && nk_str_rune_at(&state->string, state->cursor-1) == '\n') --state->cursor; state->select_end = state->cursor; } else { struct nk_text_find find; nk_textedit_clamp(state); nk_textedit_move_to_first(state); nk_textedit_find_charpos(&find, state, state->cursor, state->single_line, font, row_height); state->has_preferred_x = 0; state->cursor = find.first_char + find.length; if (find.length > 0 && nk_str_rune_at(&state->string, state->cursor-1) == '\n') --state->cursor; }} break; } } NK_INTERN void nk_textedit_flush_redo(struct nk_text_undo_state *state) { state->redo_point = NK_TEXTEDIT_UNDOSTATECOUNT; state->redo_char_point = NK_TEXTEDIT_UNDOCHARCOUNT; } NK_INTERN void nk_textedit_discard_undo(struct nk_text_undo_state *state) { /* discard the oldest entry in the undo list */ if (state->undo_point > 0) { /* if the 0th undo state has characters, clean those up */ if (state->undo_rec[0].char_storage >= 0) { int n = state->undo_rec[0].insert_length, i; /* delete n characters from all other records */ state->undo_char_point = (short)(state->undo_char_point - n); NK_MEMCPY(state->undo_char, state->undo_char + n, (nk_size)state->undo_char_point*sizeof(nk_rune)); for (i=0; i < state->undo_point; ++i) { if (state->undo_rec[i].char_storage >= 0) state->undo_rec[i].char_storage = (short) (state->undo_rec[i].char_storage - n); } } --state->undo_point; NK_MEMCPY(state->undo_rec, state->undo_rec+1, (nk_size)((nk_size)state->undo_point * sizeof(state->undo_rec[0]))); } } NK_INTERN void nk_textedit_discard_redo(struct nk_text_undo_state *state) { /* discard the oldest entry in the redo list--it's bad if this ever happens, but because undo & redo have to store the actual characters in different cases, the redo character buffer can fill up even though the undo buffer didn't */ nk_size num; int k = NK_TEXTEDIT_UNDOSTATECOUNT-1; if (state->redo_point <= k) { /* if the k'th undo state has characters, clean those up */ if (state->undo_rec[k].char_storage >= 0) { int n = state->undo_rec[k].insert_length, i; /* delete n characters from all other records */ state->redo_char_point = (short)(state->redo_char_point + n); num = (nk_size)(NK_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point); NK_MEMCPY(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, num * sizeof(char)); for (i = state->redo_point; i < k; ++i) { if (state->undo_rec[i].char_storage >= 0) { state->undo_rec[i].char_storage = (short) (state->undo_rec[i].char_storage + n); } } } ++state->redo_point; num = (nk_size)(NK_TEXTEDIT_UNDOSTATECOUNT - state->redo_point); if (num) NK_MEMCPY(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, num * sizeof(state->undo_rec[0])); } } NK_INTERN struct nk_text_undo_record* nk_textedit_create_undo_record(struct nk_text_undo_state *state, int numchars) { /* any time we create a new undo record, we discard redo*/ nk_textedit_flush_redo(state); /* if we have no free records, we have to make room, * by sliding the existing records down */ if (state->undo_point == NK_TEXTEDIT_UNDOSTATECOUNT) nk_textedit_discard_undo(state); /* if the characters to store won't possibly fit in the buffer, * we can't undo */ if (numchars > NK_TEXTEDIT_UNDOCHARCOUNT) { state->undo_point = 0; state->undo_char_point = 0; return 0; } /* if we don't have enough free characters in the buffer, * we have to make room */ while (state->undo_char_point + numchars > NK_TEXTEDIT_UNDOCHARCOUNT) nk_textedit_discard_undo(state); return &state->undo_rec[state->undo_point++]; } NK_INTERN nk_rune* nk_textedit_createundo(struct nk_text_undo_state *state, int pos, int insert_len, int delete_len) { struct nk_text_undo_record *r = nk_textedit_create_undo_record(state, insert_len); if (r == 0) return 0; r->where = pos; r->insert_length = (short) insert_len; r->delete_length = (short) delete_len; if (insert_len == 0) { r->char_storage = -1; return 0; } else { r->char_storage = state->undo_char_point; state->undo_char_point = (short)(state->undo_char_point + insert_len); return &state->undo_char[r->char_storage]; } } NK_API void nk_textedit_undo(struct nk_text_edit *state) { struct nk_text_undo_state *s = &state->undo; struct nk_text_undo_record u, *r; if (s->undo_point == 0) return; /* we need to do two things: apply the undo record, and create a redo record */ u = s->undo_rec[s->undo_point-1]; r = &s->undo_rec[s->redo_point-1]; r->char_storage = -1; r->insert_length = u.delete_length; r->delete_length = u.insert_length; r->where = u.where; if (u.delete_length) { /* if the undo record says to delete characters, then the redo record will need to re-insert the characters that get deleted, so we need to store them. there are three cases: - there's enough room to store the characters - characters stored for *redoing* don't leave room for redo - characters stored for *undoing* don't leave room for redo if the last is true, we have to bail */ if (s->undo_char_point + u.delete_length >= NK_TEXTEDIT_UNDOCHARCOUNT) { /* the undo records take up too much character space; there's no space * to store the redo characters */ r->insert_length = 0; } else { int i; /* there's definitely room to store the characters eventually */ while (s->undo_char_point + u.delete_length > s->redo_char_point) { /* there's currently not enough room, so discard a redo record */ nk_textedit_discard_redo(s); /* should never happen: */ if (s->redo_point == NK_TEXTEDIT_UNDOSTATECOUNT) return; } r = &s->undo_rec[s->redo_point-1]; r->char_storage = (short)(s->redo_char_point - u.delete_length); s->redo_char_point = (short)(s->redo_char_point - u.delete_length); /* now save the characters */ for (i=0; i < u.delete_length; ++i) s->undo_char[r->char_storage + i] = nk_str_rune_at(&state->string, u.where + i); } /* now we can carry out the deletion */ nk_str_delete_runes(&state->string, u.where, u.delete_length); } /* check type of recorded action: */ if (u.insert_length) { /* easy case: was a deletion, so we need to insert n characters */ nk_str_insert_text_runes(&state->string, u.where, &s->undo_char[u.char_storage], u.insert_length); s->undo_char_point = (short)(s->undo_char_point - u.insert_length); } state->cursor = (short)(u.where + u.insert_length); s->undo_point--; s->redo_point--; } NK_API void nk_textedit_redo(struct nk_text_edit *state) { struct nk_text_undo_state *s = &state->undo; struct nk_text_undo_record *u, r; if (s->redo_point == NK_TEXTEDIT_UNDOSTATECOUNT) return; /* we need to do two things: apply the redo record, and create an undo record */ u = &s->undo_rec[s->undo_point]; r = s->undo_rec[s->redo_point]; /* we KNOW there must be room for the undo record, because the redo record was derived from an undo record */ u->delete_length = r.insert_length; u->insert_length = r.delete_length; u->where = r.where; u->char_storage = -1; if (r.delete_length) { /* the redo record requires us to delete characters, so the undo record needs to store the characters */ if (s->undo_char_point + u->insert_length > s->redo_char_point) { u->insert_length = 0; u->delete_length = 0; } else { int i; u->char_storage = s->undo_char_point; s->undo_char_point = (short)(s->undo_char_point + u->insert_length); /* now save the characters */ for (i=0; i < u->insert_length; ++i) { s->undo_char[u->char_storage + i] = nk_str_rune_at(&state->string, u->where + i); } } nk_str_delete_runes(&state->string, r.where, r.delete_length); } if (r.insert_length) { /* easy case: need to insert n characters */ nk_str_insert_text_runes(&state->string, r.where, &s->undo_char[r.char_storage], r.insert_length); } state->cursor = r.where + r.insert_length; s->undo_point++; s->redo_point++; } NK_INTERN void nk_textedit_makeundo_insert(struct nk_text_edit *state, int where, int length) { nk_textedit_createundo(&state->undo, where, 0, length); } NK_INTERN void nk_textedit_makeundo_delete(struct nk_text_edit *state, int where, int length) { int i; nk_rune *p = nk_textedit_createundo(&state->undo, where, length, 0); if (p) { for (i=0; i < length; ++i) p[i] = nk_str_rune_at(&state->string, where+i); } } NK_INTERN void nk_textedit_makeundo_replace(struct nk_text_edit *state, int where, int old_length, int new_length) { int i; nk_rune *p = nk_textedit_createundo(&state->undo, where, old_length, new_length); if (p) { for (i=0; i < old_length; ++i) p[i] = nk_str_rune_at(&state->string, where+i); } } NK_LIB void nk_textedit_clear_state(struct nk_text_edit *state, enum nk_text_edit_type type, nk_plugin_filter filter) { /* reset the state to default */ state->undo.undo_point = 0; state->undo.undo_char_point = 0; state->undo.redo_point = NK_TEXTEDIT_UNDOSTATECOUNT; state->undo.redo_char_point = NK_TEXTEDIT_UNDOCHARCOUNT; state->select_end = state->select_start = 0; state->cursor = 0; state->has_preferred_x = 0; state->preferred_x = 0; state->cursor_at_end_of_line = 0; state->initialized = 1; state->single_line = (unsigned char)(type == NK_TEXT_EDIT_SINGLE_LINE); state->mode = NK_TEXT_EDIT_MODE_VIEW; state->filter = filter; state->scrollbar = nk_vec2(0,0); } NK_API void nk_textedit_init_fixed(struct nk_text_edit *state, void *memory, nk_size size) { NK_ASSERT(state); NK_ASSERT(memory); if (!state || !memory || !size) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init_fixed(&state->string, memory, size); } NK_API void nk_textedit_init(struct nk_text_edit *state, struct nk_allocator *alloc, nk_size size) { NK_ASSERT(state); NK_ASSERT(alloc); if (!state || !alloc) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init(&state->string, alloc, size); } #ifdef NK_INCLUDE_DEFAULT_ALLOCATOR NK_API void nk_textedit_init_default(struct nk_text_edit *state) { NK_ASSERT(state); if (!state) return; NK_MEMSET(state, 0, sizeof(struct nk_text_edit)); nk_textedit_clear_state(state, NK_TEXT_EDIT_SINGLE_LINE, 0); nk_str_init_default(&state->string); } #endif NK_API void nk_textedit_select_all(struct nk_text_edit *state) { NK_ASSERT(state); state->select_start = 0; state->select_end = state->string.len; } NK_API void nk_textedit_free(struct nk_text_edit *state) { NK_ASSERT(state); if (!state) return; nk_str_free(&state->string); } ================================================ FILE: src/nuklear_toggle.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TOGGLE * * ===============================================================*/ NK_LIB int nk_toggle_behavior(const struct nk_input *in, struct nk_rect select, nk_flags *state, int active) { nk_widget_state_reset(state); if (nk_button_behavior(state, select, in, NK_BUTTON_DEFAULT)) { *state = NK_WIDGET_STATE_ACTIVE; active = !active; } if (*state & NK_WIDGET_STATE_HOVER && !nk_input_is_mouse_prev_hovering_rect(in, select)) *state |= NK_WIDGET_STATE_ENTERED; else if (nk_input_is_mouse_prev_hovering_rect(in, select)) *state |= NK_WIDGET_STATE_LEFT; return active; } NK_LIB void nk_draw_checkbox(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font) { const struct nk_style_item *background; const struct nk_style_item *cursor; struct nk_text text; /* select correct colors/images */ if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_active; } else { background = &style->normal; cursor = &style->cursor_normal; text.text = style->text_normal; } /* draw background and cursor */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_rect(out, *selector, 0, style->border_color); nk_fill_rect(out, nk_shrink_rect(*selector, style->border), 0, background->data.color); } else nk_draw_image(out, *selector, &background->data.image, nk_white); if (active) { if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *cursors, &cursor->data.image, nk_white); else nk_fill_rect(out, *cursors, 0, cursor->data.color); } text.padding.x = 0; text.padding.y = 0; text.background = style->text_background; nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font); } NK_LIB void nk_draw_option(struct nk_command_buffer *out, nk_flags state, const struct nk_style_toggle *style, int active, const struct nk_rect *label, const struct nk_rect *selector, const struct nk_rect *cursors, const char *string, int len, const struct nk_user_font *font) { const struct nk_style_item *background; const struct nk_style_item *cursor; struct nk_text text; /* select correct colors/images */ if (state & NK_WIDGET_STATE_HOVER) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_hover; } else if (state & NK_WIDGET_STATE_ACTIVED) { background = &style->hover; cursor = &style->cursor_hover; text.text = style->text_active; } else { background = &style->normal; cursor = &style->cursor_normal; text.text = style->text_normal; } /* draw background and cursor */ if (background->type == NK_STYLE_ITEM_COLOR) { nk_fill_circle(out, *selector, style->border_color); nk_fill_circle(out, nk_shrink_rect(*selector, style->border), background->data.color); } else nk_draw_image(out, *selector, &background->data.image, nk_white); if (active) { if (cursor->type == NK_STYLE_ITEM_IMAGE) nk_draw_image(out, *cursors, &cursor->data.image, nk_white); else nk_fill_circle(out, *cursors, cursor->data.color); } text.padding.x = 0; text.padding.y = 0; text.background = style->text_background; nk_widget_text(out, *label, string, len, &text, NK_TEXT_LEFT, font); } NK_LIB int nk_do_toggle(nk_flags *state, struct nk_command_buffer *out, struct nk_rect r, int *active, const char *str, int len, enum nk_toggle_type type, const struct nk_style_toggle *style, const struct nk_input *in, const struct nk_user_font *font) { int was_active; struct nk_rect bounds; struct nk_rect select; struct nk_rect cursor; struct nk_rect label; NK_ASSERT(style); NK_ASSERT(out); NK_ASSERT(font); if (!out || !style || !font || !active) return 0; r.w = NK_MAX(r.w, font->height + 2 * style->padding.x); r.h = NK_MAX(r.h, font->height + 2 * style->padding.y); /* add additional touch padding for touch screen devices */ bounds.x = r.x - style->touch_padding.x; bounds.y = r.y - style->touch_padding.y; bounds.w = r.w + 2 * style->touch_padding.x; bounds.h = r.h + 2 * style->touch_padding.y; /* calculate the selector space */ select.w = font->height; select.h = select.w; select.y = r.y + r.h/2.0f - select.h/2.0f; select.x = r.x; /* calculate the bounds of the cursor inside the selector */ cursor.x = select.x + style->padding.x + style->border; cursor.y = select.y + style->padding.y + style->border; cursor.w = select.w - (2 * style->padding.x + 2 * style->border); cursor.h = select.h - (2 * style->padding.y + 2 * style->border); /* label behind the selector */ label.x = select.x + select.w + style->spacing; label.y = select.y; label.w = NK_MAX(r.x + r.w, label.x) - label.x; label.h = select.w; /* update selector */ was_active = *active; *active = nk_toggle_behavior(in, bounds, state, *active); /* draw selector */ if (style->draw_begin) style->draw_begin(out, style->userdata); if (type == NK_TOGGLE_CHECK) { nk_draw_checkbox(out, *state, style, *active, &label, &select, &cursor, str, len, font); } else { nk_draw_option(out, *state, style, *active, &label, &select, &cursor, str, len, font); } if (style->draw_end) style->draw_end(out, style->userdata); return (was_active != *active); } /*---------------------------------------------------------------- * * CHECKBOX * * --------------------------------------------------------------*/ NK_API int nk_check_text(struct nk_context *ctx, const char *text, int len, int active) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return active; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return active; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &active, text, len, NK_TOGGLE_CHECK, &style->checkbox, in, style->font); return active; } NK_API unsigned int nk_check_flags_text(struct nk_context *ctx, const char *text, int len, unsigned int flags, unsigned int value) { int old_active; NK_ASSERT(ctx); NK_ASSERT(text); if (!ctx || !text) return flags; old_active = (int)((flags & value) & value); if (nk_check_text(ctx, text, len, old_active)) flags |= value; else flags &= ~value; return flags; } NK_API int nk_checkbox_text(struct nk_context *ctx, const char *text, int len, int *active) { int old_val; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(active); if (!ctx || !text || !active) return 0; old_val = *active; *active = nk_check_text(ctx, text, len, *active); return old_val != *active; } NK_API int nk_checkbox_flags_text(struct nk_context *ctx, const char *text, int len, unsigned int *flags, unsigned int value) { int active; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(flags); if (!ctx || !text || !flags) return 0; active = (int)((*flags & value) & value); if (nk_checkbox_text(ctx, text, len, &active)) { if (active) *flags |= value; else *flags &= ~value; return 1; } return 0; } NK_API int nk_check_label(struct nk_context *ctx, const char *label, int active) { return nk_check_text(ctx, label, nk_strlen(label), active); } NK_API unsigned int nk_check_flags_label(struct nk_context *ctx, const char *label, unsigned int flags, unsigned int value) { return nk_check_flags_text(ctx, label, nk_strlen(label), flags, value); } NK_API int nk_checkbox_label(struct nk_context *ctx, const char *label, int *active) { return nk_checkbox_text(ctx, label, nk_strlen(label), active); } NK_API int nk_checkbox_flags_label(struct nk_context *ctx, const char *label, unsigned int *flags, unsigned int value) { return nk_checkbox_flags_text(ctx, label, nk_strlen(label), flags, value); } /*---------------------------------------------------------------- * * OPTION * * --------------------------------------------------------------*/ NK_API int nk_option_text(struct nk_context *ctx, const char *text, int len, int is_active) { struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; const struct nk_style *style; struct nk_rect bounds; enum nk_widget_layout_states state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return is_active; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(&bounds, ctx); if (!state) return (int)state; in = (state == NK_WIDGET_ROM || layout->flags & NK_WINDOW_ROM) ? 0 : &ctx->input; nk_do_toggle(&ctx->last_widget_state, &win->buffer, bounds, &is_active, text, len, NK_TOGGLE_OPTION, &style->option, in, style->font); return is_active; } NK_API int nk_radio_text(struct nk_context *ctx, const char *text, int len, int *active) { int old_value; NK_ASSERT(ctx); NK_ASSERT(text); NK_ASSERT(active); if (!ctx || !text || !active) return 0; old_value = *active; *active = nk_option_text(ctx, text, len, old_value); return old_value != *active; } NK_API int nk_option_label(struct nk_context *ctx, const char *label, int active) { return nk_option_text(ctx, label, nk_strlen(label), active); } NK_API int nk_radio_label(struct nk_context *ctx, const char *label, int *active) { return nk_radio_text(ctx, label, nk_strlen(label), active); } ================================================ FILE: src/nuklear_tooltip.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TOOLTIP * * ===============================================================*/ NK_API int nk_tooltip_begin(struct nk_context *ctx, float width) { int x,y,w,h; struct nk_window *win; const struct nk_input *in; struct nk_rect bounds; int ret; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* make sure that no nonblocking popup is currently active */ win = ctx->current; in = &ctx->input; if (win->popup.win && (win->popup.type & NK_PANEL_SET_NONBLOCK)) return 0; w = nk_iceilf(width); h = nk_iceilf(nk_null_rect.h); x = nk_ifloorf(in->mouse.pos.x + 1) - (int)win->layout->clip.x; y = nk_ifloorf(in->mouse.pos.y + 1) - (int)win->layout->clip.y; bounds.x = (float)x; bounds.y = (float)y; bounds.w = (float)w; bounds.h = (float)h; ret = nk_popup_begin(ctx, NK_POPUP_DYNAMIC, "__##Tooltip##__", NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER, bounds); if (ret) win->layout->flags &= ~(nk_flags)NK_WINDOW_ROM; win->popup.type = NK_PANEL_TOOLTIP; ctx->current->layout->type = NK_PANEL_TOOLTIP; return ret; } NK_API void nk_tooltip_end(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; ctx->current->seq--; nk_popup_close(ctx); nk_popup_end(ctx); } NK_API void nk_tooltip(struct nk_context *ctx, const char *text) { const struct nk_style *style; struct nk_vec2 padding; int text_len; float text_width; float text_height; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); NK_ASSERT(text); if (!ctx || !ctx->current || !ctx->current->layout || !text) return; /* fetch configuration data */ style = &ctx->style; padding = style->window.padding; /* calculate size of the text and tooltip */ text_len = nk_strlen(text); text_width = style->font->width(style->font->userdata, style->font->height, text, text_len); text_width += (4 * padding.x); text_height = (style->font->height + 2 * padding.y); /* execute tooltip and fill with text */ if (nk_tooltip_begin(ctx, (float)text_width)) { nk_layout_row_dynamic(ctx, (float)text_height, 1); nk_text(ctx, text, text_len, NK_TEXT_LEFT); nk_tooltip_end(ctx); } } #ifdef NK_INCLUDE_STANDARD_VARARGS NK_API void nk_tooltipf(struct nk_context *ctx, const char *fmt, ...) { va_list args; va_start(args, fmt); nk_tooltipfv(ctx, fmt, args); va_end(args); } NK_API void nk_tooltipfv(struct nk_context *ctx, const char *fmt, va_list args) { char buf[256]; nk_strfmt(buf, NK_LEN(buf), fmt, args); nk_tooltip(ctx, buf); } #endif ================================================ FILE: src/nuklear_tree.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * TREE * * ===============================================================*/ NK_INTERN int nk_tree_state_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states *state) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; const struct nk_input *in; const struct nk_style_button *button; enum nk_symbol_type symbol; float row_height; struct nk_vec2 item_spacing; struct nk_rect header = {0,0,0,0}; struct nk_rect sym = {0,0,0,0}; struct nk_text text; nk_flags ws = 0; enum nk_widget_layout_states widget_state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* cache some data */ win = ctx->current; layout = win->layout; out = &win->buffer; style = &ctx->style; item_spacing = style->window.spacing; /* calculate header bounds and draw background */ row_height = style->font->height + 2 * style->tab.padding.y; nk_layout_set_min_row_height(ctx, row_height); nk_layout_row_dynamic(ctx, row_height, 1); nk_layout_reset_min_row_height(ctx); widget_state = nk_widget(&header, ctx); if (type == NK_TREE_TAB) { const struct nk_style_item *background = &style->tab.background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, header, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, style->tab.border_color); nk_fill_rect(out, nk_shrink_rect(header, style->tab.border), style->tab.rounding, background->data.color); } } else text.background = style->window.background; /* update node state */ in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0; in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0; if (nk_button_behavior(&ws, header, in, NK_BUTTON_DEFAULT)) *state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED; /* select correct button style */ if (*state == NK_MAXIMIZED) { symbol = style->tab.sym_maximize; if (type == NK_TREE_TAB) button = &style->tab.tab_maximize_button; else button = &style->tab.node_maximize_button; } else { symbol = style->tab.sym_minimize; if (type == NK_TREE_TAB) button = &style->tab.tab_minimize_button; else button = &style->tab.node_minimize_button; } {/* draw triangle button */ sym.w = sym.h = style->font->height; sym.y = header.y + style->tab.padding.y; sym.x = header.x + style->tab.padding.x; nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT, button, 0, style->font); if (img) { /* draw optional image icon */ sym.x = sym.x + sym.w + 4 * item_spacing.x; nk_draw_image(&win->buffer, sym, img, nk_white); sym.w = style->font->height + style->tab.spacing.x;} } {/* draw label */ struct nk_rect label; header.w = NK_MAX(header.w, sym.w + item_spacing.x); label.x = sym.x + sym.w + item_spacing.x; label.y = sym.y; label.w = header.w - (sym.w + item_spacing.y + style->tab.indent); label.h = style->font->height; text.text = style->tab.text; text.padding = nk_vec2(0,0); nk_widget_text(out, label, title, nk_strlen(title), &text, NK_TEXT_LEFT, style->font);} /* increase x-axis cursor widget position pointer */ if (*state == NK_MAXIMIZED) { layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent; layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent); layout->bounds.w -= (style->tab.indent + style->window.padding.x); layout->row.tree_depth++; return nk_true; } else return nk_false; } NK_INTERN int nk_tree_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states initial_state, const char *hash, int len, int line) { struct nk_window *win = ctx->current; int title_len = 0; nk_hash tree_hash = 0; nk_uint *state = 0; /* retrieve tree state from internal widget state tables */ if (!hash) { title_len = (int)nk_strlen(title); tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line); } else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line); state = nk_find_value(win, tree_hash); if (!state) { state = nk_add_value(ctx, win, tree_hash, 0); *state = initial_state; } return nk_tree_state_base(ctx, type, img, title, (enum nk_collapse_states*)state); } NK_API int nk_tree_state_push(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states *state) { return nk_tree_state_base(ctx, type, 0, title, state); } NK_API int nk_tree_state_image_push(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states *state) { return nk_tree_state_base(ctx, type, &img, title, state); } NK_API void nk_tree_state_pop(struct nk_context *ctx) { struct nk_window *win = 0; struct nk_panel *layout = 0; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; win = ctx->current; layout = win->layout; layout->at_x -= ctx->style.tab.indent + ctx->style.window.padding.x; layout->bounds.w += ctx->style.tab.indent + ctx->style.window.padding.x; NK_ASSERT(layout->row.tree_depth); layout->row.tree_depth--; } NK_API int nk_tree_push_hashed(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states initial_state, const char *hash, int len, int line) { return nk_tree_base(ctx, type, 0, title, initial_state, hash, len, line); } NK_API int nk_tree_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states initial_state, const char *hash, int len,int seed) { return nk_tree_base(ctx, type, &img, title, initial_state, hash, len, seed); } NK_API void nk_tree_pop(struct nk_context *ctx) { nk_tree_state_pop(ctx); } NK_INTERN int nk_tree_element_image_push_hashed_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, int title_len, enum nk_collapse_states *state, int *selected) { struct nk_window *win; struct nk_panel *layout; const struct nk_style *style; struct nk_command_buffer *out; const struct nk_input *in; const struct nk_style_button *button; enum nk_symbol_type symbol; float row_height; struct nk_vec2 padding; int text_len; float text_width; struct nk_vec2 item_spacing; struct nk_rect header = {0,0,0,0}; struct nk_rect sym = {0,0,0,0}; struct nk_text text; nk_flags ws = 0; enum nk_widget_layout_states widget_state; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return 0; /* cache some data */ win = ctx->current; layout = win->layout; out = &win->buffer; style = &ctx->style; item_spacing = style->window.spacing; padding = style->selectable.padding; /* calculate header bounds and draw background */ row_height = style->font->height + 2 * style->tab.padding.y; nk_layout_set_min_row_height(ctx, row_height); nk_layout_row_dynamic(ctx, row_height, 1); nk_layout_reset_min_row_height(ctx); widget_state = nk_widget(&header, ctx); if (type == NK_TREE_TAB) { const struct nk_style_item *background = &style->tab.background; if (background->type == NK_STYLE_ITEM_IMAGE) { nk_draw_image(out, header, &background->data.image, nk_white); text.background = nk_rgba(0,0,0,0); } else { text.background = background->data.color; nk_fill_rect(out, header, 0, style->tab.border_color); nk_fill_rect(out, nk_shrink_rect(header, style->tab.border), style->tab.rounding, background->data.color); } } else text.background = style->window.background; in = (!(layout->flags & NK_WINDOW_ROM)) ? &ctx->input: 0; in = (in && widget_state == NK_WIDGET_VALID) ? &ctx->input : 0; /* select correct button style */ if (*state == NK_MAXIMIZED) { symbol = style->tab.sym_maximize; if (type == NK_TREE_TAB) button = &style->tab.tab_maximize_button; else button = &style->tab.node_maximize_button; } else { symbol = style->tab.sym_minimize; if (type == NK_TREE_TAB) button = &style->tab.tab_minimize_button; else button = &style->tab.node_minimize_button; } {/* draw triangle button */ sym.w = sym.h = style->font->height; sym.y = header.y + style->tab.padding.y; sym.x = header.x + style->tab.padding.x; if (nk_do_button_symbol(&ws, &win->buffer, sym, symbol, NK_BUTTON_DEFAULT, button, in, style->font)) *state = (*state == NK_MAXIMIZED) ? NK_MINIMIZED : NK_MAXIMIZED;} /* draw label */ {nk_flags dummy = 0; struct nk_rect label; /* calculate size of the text and tooltip */ text_len = nk_strlen(title); text_width = style->font->width(style->font->userdata, style->font->height, title, text_len); text_width += (4 * padding.x); header.w = NK_MAX(header.w, sym.w + item_spacing.x); label.x = sym.x + sym.w + item_spacing.x; label.y = sym.y; label.w = NK_MIN(header.w - (sym.w + item_spacing.y + style->tab.indent), text_width); label.h = style->font->height; if (img) { nk_do_selectable_image(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT, selected, img, &style->selectable, in, style->font); } else nk_do_selectable(&dummy, &win->buffer, label, title, title_len, NK_TEXT_LEFT, selected, &style->selectable, in, style->font); } /* increase x-axis cursor widget position pointer */ if (*state == NK_MAXIMIZED) { layout->at_x = header.x + (float)*layout->offset_x + style->tab.indent; layout->bounds.w = NK_MAX(layout->bounds.w, style->tab.indent); layout->bounds.w -= (style->tab.indent + style->window.padding.x); layout->row.tree_depth++; return nk_true; } else return nk_false; } NK_INTERN int nk_tree_element_base(struct nk_context *ctx, enum nk_tree_type type, struct nk_image *img, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int line) { struct nk_window *win = ctx->current; int title_len = 0; nk_hash tree_hash = 0; nk_uint *state = 0; /* retrieve tree state from internal widget state tables */ if (!hash) { title_len = (int)nk_strlen(title); tree_hash = nk_murmur_hash(title, (int)title_len, (nk_hash)line); } else tree_hash = nk_murmur_hash(hash, len, (nk_hash)line); state = nk_find_value(win, tree_hash); if (!state) { state = nk_add_value(ctx, win, tree_hash, 0); *state = initial_state; } return nk_tree_element_image_push_hashed_base(ctx, type, img, title, nk_strlen(title), (enum nk_collapse_states*)state, selected); } NK_API int nk_tree_element_push_hashed(struct nk_context *ctx, enum nk_tree_type type, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len, int seed) { return nk_tree_element_base(ctx, type, 0, title, initial_state, selected, hash, len, seed); } NK_API int nk_tree_element_image_push_hashed(struct nk_context *ctx, enum nk_tree_type type, struct nk_image img, const char *title, enum nk_collapse_states initial_state, int *selected, const char *hash, int len,int seed) { return nk_tree_element_base(ctx, type, &img, title, initial_state, selected, hash, len, seed); } NK_API void nk_tree_element_pop(struct nk_context *ctx) { nk_tree_state_pop(ctx); } ================================================ FILE: src/nuklear_utf8.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * UTF-8 * * ===============================================================*/ NK_GLOBAL const nk_byte nk_utfbyte[NK_UTF_SIZE+1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; NK_GLOBAL const nk_byte nk_utfmask[NK_UTF_SIZE+1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; NK_GLOBAL const nk_uint nk_utfmin[NK_UTF_SIZE+1] = {0, 0, 0x80, 0x800, 0x10000}; NK_GLOBAL const nk_uint nk_utfmax[NK_UTF_SIZE+1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; NK_INTERN int nk_utf_validate(nk_rune *u, int i) { NK_ASSERT(u); if (!u) return 0; if (!NK_BETWEEN(*u, nk_utfmin[i], nk_utfmax[i]) || NK_BETWEEN(*u, 0xD800, 0xDFFF)) *u = NK_UTF_INVALID; for (i = 1; *u > nk_utfmax[i]; ++i); return i; } NK_INTERN nk_rune nk_utf_decode_byte(char c, int *i) { NK_ASSERT(i); if (!i) return 0; for(*i = 0; *i < (int)NK_LEN(nk_utfmask); ++(*i)) { if (((nk_byte)c & nk_utfmask[*i]) == nk_utfbyte[*i]) return (nk_byte)(c & ~nk_utfmask[*i]); } return 0; } NK_API int nk_utf_decode(const char *c, nk_rune *u, int clen) { int i, j, len, type=0; nk_rune udecoded; NK_ASSERT(c); NK_ASSERT(u); if (!c || !u) return 0; if (!clen) return 0; *u = NK_UTF_INVALID; udecoded = nk_utf_decode_byte(c[0], &len); if (!NK_BETWEEN(len, 1, NK_UTF_SIZE)) return 1; for (i = 1, j = 1; i < clen && j < len; ++i, ++j) { udecoded = (udecoded << 6) | nk_utf_decode_byte(c[i], &type); if (type != 0) return j; } if (j < len) return 0; *u = udecoded; nk_utf_validate(u, len); return len; } NK_INTERN char nk_utf_encode_byte(nk_rune u, int i) { return (char)((nk_utfbyte[i]) | ((nk_byte)u & ~nk_utfmask[i])); } NK_API int nk_utf_encode(nk_rune u, char *c, int clen) { int len, i; len = nk_utf_validate(&u, 0); if (clen < len || !len || len > NK_UTF_SIZE) return 0; for (i = len - 1; i != 0; --i) { c[i] = nk_utf_encode_byte(u, 0); u >>= 6; } c[0] = nk_utf_encode_byte(u, len); return len; } NK_API int nk_utf_len(const char *str, int len) { const char *text; int glyphs = 0; int text_len; int glyph_len; int src_len = 0; nk_rune unicode; NK_ASSERT(str); if (!str || !len) return 0; text = str; text_len = len; glyph_len = nk_utf_decode(text, &unicode, text_len); while (glyph_len && src_len < len) { glyphs++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, &unicode, text_len - src_len); } return glyphs; } NK_API const char* nk_utf_at(const char *buffer, int length, int index, nk_rune *unicode, int *len) { int i = 0; int src_len = 0; int glyph_len = 0; const char *text; int text_len; NK_ASSERT(buffer); NK_ASSERT(unicode); NK_ASSERT(len); if (!buffer || !unicode || !len) return 0; if (index < 0) { *unicode = NK_UTF_INVALID; *len = 0; return 0; } text = buffer; text_len = length; glyph_len = nk_utf_decode(text, unicode, text_len); while (glyph_len) { if (i == index) { *len = glyph_len; break; } i++; src_len = src_len + glyph_len; glyph_len = nk_utf_decode(text + src_len, unicode, text_len - src_len); } if (i != index) return 0; return buffer + src_len; } ================================================ FILE: src/nuklear_util.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * UTIL * * ===============================================================*/ NK_INTERN int nk_str_match_here(const char *regexp, const char *text); NK_INTERN int nk_str_match_star(int c, const char *regexp, const char *text); NK_LIB int nk_is_lower(int c) {return (c >= 'a' && c <= 'z') || (c >= 0xE0 && c <= 0xFF);} NK_LIB int nk_is_upper(int c){return (c >= 'A' && c <= 'Z') || (c >= 0xC0 && c <= 0xDF);} NK_LIB int nk_to_upper(int c) {return (c >= 'a' && c <= 'z') ? (c - ('a' - 'A')) : c;} NK_LIB int nk_to_lower(int c) {return (c >= 'A' && c <= 'Z') ? (c - ('a' + 'A')) : c;} NK_LIB void* nk_memcopy(void *dst0, const void *src0, nk_size length) { nk_ptr t; char *dst = (char*)dst0; const char *src = (const char*)src0; if (length == 0 || dst == src) goto done; #define nk_word int #define nk_wsize sizeof(nk_word) #define nk_wmask (nk_wsize-1) #define NK_TLOOP(s) if (t) NK_TLOOP1(s) #define NK_TLOOP1(s) do { s; } while (--t) if (dst < src) { t = (nk_ptr)src; /* only need low bits */ if ((t | (nk_ptr)dst) & nk_wmask) { if ((t ^ (nk_ptr)dst) & nk_wmask || length < nk_wsize) t = length; else t = nk_wsize - (t & nk_wmask); length -= t; NK_TLOOP1(*dst++ = *src++); } t = length / nk_wsize; NK_TLOOP(*(nk_word*)(void*)dst = *(const nk_word*)(const void*)src; src += nk_wsize; dst += nk_wsize); t = length & nk_wmask; NK_TLOOP(*dst++ = *src++); } else { src += length; dst += length; t = (nk_ptr)src; if ((t | (nk_ptr)dst) & nk_wmask) { if ((t ^ (nk_ptr)dst) & nk_wmask || length <= nk_wsize) t = length; else t &= nk_wmask; length -= t; NK_TLOOP1(*--dst = *--src); } t = length / nk_wsize; NK_TLOOP(src -= nk_wsize; dst -= nk_wsize; *(nk_word*)(void*)dst = *(const nk_word*)(const void*)src); t = length & nk_wmask; NK_TLOOP(*--dst = *--src); } #undef nk_word #undef nk_wsize #undef nk_wmask #undef NK_TLOOP #undef NK_TLOOP1 done: return (dst0); } NK_LIB void nk_memset(void *ptr, int c0, nk_size size) { #define nk_word unsigned #define nk_wsize sizeof(nk_word) #define nk_wmask (nk_wsize - 1) nk_byte *dst = (nk_byte*)ptr; unsigned c = 0; nk_size t = 0; if ((c = (nk_byte)c0) != 0) { c = (c << 8) | c; /* at least 16-bits */ if (sizeof(unsigned int) > 2) c = (c << 16) | c; /* at least 32-bits*/ } /* too small of a word count */ dst = (nk_byte*)ptr; if (size < 3 * nk_wsize) { while (size--) *dst++ = (nk_byte)c0; return; } /* align destination */ if ((t = NK_PTR_TO_UINT(dst) & nk_wmask) != 0) { t = nk_wsize -t; size -= t; do { *dst++ = (nk_byte)c0; } while (--t != 0); } /* fill word */ t = size / nk_wsize; do { *(nk_word*)((void*)dst) = c; dst += nk_wsize; } while (--t != 0); /* fill trailing bytes */ t = (size & nk_wmask); if (t != 0) { do { *dst++ = (nk_byte)c0; } while (--t != 0); } #undef nk_word #undef nk_wsize #undef nk_wmask } NK_LIB void nk_zero(void *ptr, nk_size size) { NK_ASSERT(ptr); NK_MEMSET(ptr, 0, size); } NK_API int nk_strlen(const char *str) { int siz = 0; NK_ASSERT(str); while (str && *str++ != '\0') siz++; return siz; } NK_API int nk_strtoi(const char *str, const char **endptr) { int neg = 1; const char *p = str; int value = 0; NK_ASSERT(str); if (!str) return 0; /* skip whitespace */ while (*p == ' ') p++; if (*p == '-') { neg = -1; p++; } while (*p && *p >= '0' && *p <= '9') { value = value * 10 + (int) (*p - '0'); p++; } if (endptr) *endptr = p; return neg*value; } NK_API double nk_strtod(const char *str, const char **endptr) { double m; double neg = 1.0; const char *p = str; double value = 0; double number = 0; NK_ASSERT(str); if (!str) return 0; /* skip whitespace */ while (*p == ' ') p++; if (*p == '-') { neg = -1.0; p++; } while (*p && *p != '.' && *p != 'e') { value = value * 10.0 + (double) (*p - '0'); p++; } if (*p == '.') { p++; for(m = 0.1; *p && *p != 'e'; p++ ) { value = value + (double) (*p - '0') * m; m *= 0.1; } } if (*p == 'e') { int i, pow, div; p++; if (*p == '-') { div = nk_true; p++; } else if (*p == '+') { div = nk_false; p++; } else div = nk_false; for (pow = 0; *p; p++) pow = pow * 10 + (int) (*p - '0'); for (m = 1.0, i = 0; i < pow; i++) m *= 10.0; if (div) value /= m; else value *= m; } number = value * neg; if (endptr) *endptr = p; return number; } NK_API float nk_strtof(const char *str, const char **endptr) { float float_value; double double_value; double_value = NK_STRTOD(str, endptr); float_value = (float)double_value; return float_value; } NK_API int nk_stricmp(const char *s1, const char *s2) { nk_int c1,c2,d; do { c1 = *s1++; c2 = *s2++; d = c1 - c2; while (d) { if (c1 <= 'Z' && c1 >= 'A') { d += ('a' - 'A'); if (!d) break; } if (c2 <= 'Z' && c2 >= 'A') { d -= ('a' - 'A'); if (!d) break; } return ((d >= 0) << 1) - 1; } } while (c1); return 0; } NK_API int nk_stricmpn(const char *s1, const char *s2, int n) { int c1,c2,d; NK_ASSERT(n >= 0); do { c1 = *s1++; c2 = *s2++; if (!n--) return 0; d = c1 - c2; while (d) { if (c1 <= 'Z' && c1 >= 'A') { d += ('a' - 'A'); if (!d) break; } if (c2 <= 'Z' && c2 >= 'A') { d -= ('a' - 'A'); if (!d) break; } return ((d >= 0) << 1) - 1; } } while (c1); return 0; } NK_INTERN int nk_str_match_here(const char *regexp, const char *text) { if (regexp[0] == '\0') return 1; if (regexp[1] == '*') return nk_str_match_star(regexp[0], regexp+2, text); if (regexp[0] == '$' && regexp[1] == '\0') return *text == '\0'; if (*text!='\0' && (regexp[0]=='.' || regexp[0]==*text)) return nk_str_match_here(regexp+1, text+1); return 0; } NK_INTERN int nk_str_match_star(int c, const char *regexp, const char *text) { do {/* a '* matches zero or more instances */ if (nk_str_match_here(regexp, text)) return 1; } while (*text != '\0' && (*text++ == c || c == '.')); return 0; } NK_API int nk_strfilter(const char *text, const char *regexp) { /* c matches any literal character c . matches any single character ^ matches the beginning of the input string $ matches the end of the input string * matches zero or more occurrences of the previous character*/ if (regexp[0] == '^') return nk_str_match_here(regexp+1, text); do { /* must look even if string is empty */ if (nk_str_match_here(regexp, text)) return 1; } while (*text++ != '\0'); return 0; } NK_API int nk_strmatch_fuzzy_text(const char *str, int str_len, const char *pattern, int *out_score) { /* Returns true if each character in pattern is found sequentially within str * if found then out_score is also set. Score value has no intrinsic meaning. * Range varies with pattern. Can only compare scores with same search pattern. */ /* bonus for adjacent matches */ #define NK_ADJACENCY_BONUS 5 /* bonus if match occurs after a separator */ #define NK_SEPARATOR_BONUS 10 /* bonus if match is uppercase and prev is lower */ #define NK_CAMEL_BONUS 10 /* penalty applied for every letter in str before the first match */ #define NK_LEADING_LETTER_PENALTY (-3) /* maximum penalty for leading letters */ #define NK_MAX_LEADING_LETTER_PENALTY (-9) /* penalty for every letter that doesn't matter */ #define NK_UNMATCHED_LETTER_PENALTY (-1) /* loop variables */ int score = 0; char const * pattern_iter = pattern; int str_iter = 0; int prev_matched = nk_false; int prev_lower = nk_false; /* true so if first letter match gets separator bonus*/ int prev_separator = nk_true; /* use "best" matched letter if multiple string letters match the pattern */ char const * best_letter = 0; int best_letter_score = 0; /* loop over strings */ NK_ASSERT(str); NK_ASSERT(pattern); if (!str || !str_len || !pattern) return 0; while (str_iter < str_len) { const char pattern_letter = *pattern_iter; const char str_letter = str[str_iter]; int next_match = *pattern_iter != '\0' && nk_to_lower(pattern_letter) == nk_to_lower(str_letter); int rematch = best_letter && nk_to_upper(*best_letter) == nk_to_upper(str_letter); int advanced = next_match && best_letter; int pattern_repeat = best_letter && *pattern_iter != '\0'; pattern_repeat = pattern_repeat && nk_to_lower(*best_letter) == nk_to_lower(pattern_letter); if (advanced || pattern_repeat) { score += best_letter_score; best_letter = 0; best_letter_score = 0; } if (next_match || rematch) { int new_score = 0; /* Apply penalty for each letter before the first pattern match */ if (pattern_iter == pattern) { int count = (int)(&str[str_iter] - str); int penalty = NK_LEADING_LETTER_PENALTY * count; if (penalty < NK_MAX_LEADING_LETTER_PENALTY) penalty = NK_MAX_LEADING_LETTER_PENALTY; score += penalty; } /* apply bonus for consecutive bonuses */ if (prev_matched) new_score += NK_ADJACENCY_BONUS; /* apply bonus for matches after a separator */ if (prev_separator) new_score += NK_SEPARATOR_BONUS; /* apply bonus across camel case boundaries */ if (prev_lower && nk_is_upper(str_letter)) new_score += NK_CAMEL_BONUS; /* update pattern iter IFF the next pattern letter was matched */ if (next_match) ++pattern_iter; /* update best letter in str which may be for a "next" letter or a rematch */ if (new_score >= best_letter_score) { /* apply penalty for now skipped letter */ if (best_letter != 0) score += NK_UNMATCHED_LETTER_PENALTY; best_letter = &str[str_iter]; best_letter_score = new_score; } prev_matched = nk_true; } else { score += NK_UNMATCHED_LETTER_PENALTY; prev_matched = nk_false; } /* separators should be more easily defined */ prev_lower = nk_is_lower(str_letter) != 0; prev_separator = str_letter == '_' || str_letter == ' '; ++str_iter; } /* apply score for last match */ if (best_letter) score += best_letter_score; /* did not match full pattern */ if (*pattern_iter != '\0') return nk_false; if (out_score) *out_score = score; return nk_true; } NK_API int nk_strmatch_fuzzy_string(char const *str, char const *pattern, int *out_score) { return nk_strmatch_fuzzy_text(str, nk_strlen(str), pattern, out_score); } NK_LIB int nk_string_float_limit(char *string, int prec) { int dot = 0; char *c = string; while (*c) { if (*c == '.') { dot = 1; c++; continue; } if (dot == (prec+1)) { *c = 0; break; } if (dot > 0) dot++; c++; } return (int)(c - string); } NK_INTERN void nk_strrev_ascii(char *s) { int len = nk_strlen(s); int end = len / 2; int i = 0; char t; for (; i < end; ++i) { t = s[i]; s[i] = s[len - 1 - i]; s[len -1 - i] = t; } } NK_LIB char* nk_itoa(char *s, long n) { long i = 0; if (n == 0) { s[i++] = '0'; s[i] = 0; return s; } if (n < 0) { s[i++] = '-'; n = -n; } while (n > 0) { s[i++] = (char)('0' + (n % 10)); n /= 10; } s[i] = 0; if (s[0] == '-') ++s; nk_strrev_ascii(s); return s; } NK_LIB char* nk_dtoa(char *s, double n) { int useExp = 0; int digit = 0, m = 0, m1 = 0; char *c = s; int neg = 0; NK_ASSERT(s); if (!s) return 0; if (n == 0.0) { s[0] = '0'; s[1] = '\0'; return s; } neg = (n < 0); if (neg) n = -n; /* calculate magnitude */ m = nk_log10(n); useExp = (m >= 14 || (neg && m >= 9) || m <= -9); if (neg) *(c++) = '-'; /* set up for scientific notation */ if (useExp) { if (m < 0) m -= 1; n = n / (double)nk_pow(10.0, m); m1 = m; m = 0; } if (m < 1.0) { m = 0; } /* convert the number */ while (n > NK_FLOAT_PRECISION || m >= 0) { double weight = nk_pow(10.0, m); if (weight > 0) { double t = (double)n / weight; digit = nk_ifloord(t); n -= ((double)digit * weight); *(c++) = (char)('0' + (char)digit); } if (m == 0 && n > 0) *(c++) = '.'; m--; } if (useExp) { /* convert the exponent */ int i, j; *(c++) = 'e'; if (m1 > 0) { *(c++) = '+'; } else { *(c++) = '-'; m1 = -m1; } m = 0; while (m1 > 0) { *(c++) = (char)('0' + (char)(m1 % 10)); m1 /= 10; m++; } c -= m; for (i = 0, j = m-1; i= buf_size) break; iter++; /* flag arguments */ while (*iter) { if (*iter == '-') flag |= NK_ARG_FLAG_LEFT; else if (*iter == '+') flag |= NK_ARG_FLAG_PLUS; else if (*iter == ' ') flag |= NK_ARG_FLAG_SPACE; else if (*iter == '#') flag |= NK_ARG_FLAG_NUM; else if (*iter == '0') flag |= NK_ARG_FLAG_ZERO; else break; iter++; } /* width argument */ width = NK_DEFAULT; if (*iter >= '1' && *iter <= '9') { const char *end; width = nk_strtoi(iter, &end); if (end == iter) width = -1; else iter = end; } else if (*iter == '*') { width = va_arg(args, int); iter++; } /* precision argument */ precision = NK_DEFAULT; if (*iter == '.') { iter++; if (*iter == '*') { precision = va_arg(args, int); iter++; } else { const char *end; precision = nk_strtoi(iter, &end); if (end == iter) precision = -1; else iter = end; } } /* length modifier */ if (*iter == 'h') { if (*(iter+1) == 'h') { arg_type = NK_ARG_TYPE_CHAR; iter++; } else arg_type = NK_ARG_TYPE_SHORT; iter++; } else if (*iter == 'l') { arg_type = NK_ARG_TYPE_LONG; iter++; } else arg_type = NK_ARG_TYPE_DEFAULT; /* specifier */ if (*iter == '%') { NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (len < buf_size) buf[len++] = '%'; } else if (*iter == 's') { /* string */ const char *str = va_arg(args, const char*); NK_ASSERT(str != buf && "buffer and argument are not allowed to overlap!"); NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (str == buf) return -1; while (str && *str && len < buf_size) buf[len++] = *str++; } else if (*iter == 'n') { /* current length callback */ signed int *n = va_arg(args, int*); NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_ASSERT(precision == NK_DEFAULT); NK_ASSERT(width == NK_DEFAULT); if (n) *n = len; } else if (*iter == 'c' || *iter == 'i' || *iter == 'd') { /* signed integer */ long value = 0; const char *num_iter; int num_len, num_print, padding; int cur_precision = NK_MAX(precision, 1); int cur_width = NK_MAX(width, 0); /* retrieve correct value type */ if (arg_type == NK_ARG_TYPE_CHAR) value = (signed char)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_SHORT) value = (signed short)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_LONG) value = va_arg(args, signed long); else if (*iter == 'c') value = (unsigned char)va_arg(args, int); else value = va_arg(args, signed int); /* convert number to string */ nk_itoa(number_buffer, value); num_len = nk_strlen(number_buffer); padding = NK_MAX(cur_width - NK_MAX(cur_precision, num_len), 0); if ((flag & NK_ARG_FLAG_PLUS) || (flag & NK_ARG_FLAG_SPACE)) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while (padding-- > 0 && (len < buf_size)) { if ((flag & NK_ARG_FLAG_ZERO) && (precision == NK_DEFAULT)) buf[len++] = '0'; else buf[len++] = ' '; } } /* copy string value representation into buffer */ if ((flag & NK_ARG_FLAG_PLUS) && value >= 0 && len < buf_size) buf[len++] = '+'; else if ((flag & NK_ARG_FLAG_SPACE) && value >= 0 && len < buf_size) buf[len++] = ' '; /* fill up to precision number of digits with '0' */ num_print = NK_MAX(cur_precision, num_len); while (precision && (num_print > num_len) && (len < buf_size)) { buf[len++] = '0'; num_print--; } /* copy string value representation into buffer */ num_iter = number_buffer; while (precision && *num_iter && len < buf_size) buf[len++] = *num_iter++; /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else if (*iter == 'o' || *iter == 'x' || *iter == 'X' || *iter == 'u') { /* unsigned integer */ unsigned long value = 0; int num_len = 0, num_print, padding = 0; int cur_precision = NK_MAX(precision, 1); int cur_width = NK_MAX(width, 0); unsigned int base = (*iter == 'o') ? 8: (*iter == 'u')? 10: 16; /* print oct/hex/dec value */ const char *upper_output_format = "0123456789ABCDEF"; const char *lower_output_format = "0123456789abcdef"; const char *output_format = (*iter == 'x') ? lower_output_format: upper_output_format; /* retrieve correct value type */ if (arg_type == NK_ARG_TYPE_CHAR) value = (unsigned char)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_SHORT) value = (unsigned short)va_arg(args, int); else if (arg_type == NK_ARG_TYPE_LONG) value = va_arg(args, unsigned long); else value = va_arg(args, unsigned int); do { /* convert decimal number into hex/oct number */ int digit = output_format[value % base]; if (num_len < NK_MAX_NUMBER_BUFFER) number_buffer[num_len++] = (char)digit; value /= base; } while (value > 0); num_print = NK_MAX(cur_precision, num_len); padding = NK_MAX(cur_width - NK_MAX(cur_precision, num_len), 0); if (flag & NK_ARG_FLAG_NUM) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while ((padding-- > 0) && (len < buf_size)) { if ((flag & NK_ARG_FLAG_ZERO) && (precision == NK_DEFAULT)) buf[len++] = '0'; else buf[len++] = ' '; } } /* fill up to precision number of digits */ if (num_print && (flag & NK_ARG_FLAG_NUM)) { if ((*iter == 'o') && (len < buf_size)) { buf[len++] = '0'; } else if ((*iter == 'x') && ((len+1) < buf_size)) { buf[len++] = '0'; buf[len++] = 'x'; } else if ((*iter == 'X') && ((len+1) < buf_size)) { buf[len++] = '0'; buf[len++] = 'X'; } } while (precision && (num_print > num_len) && (len < buf_size)) { buf[len++] = '0'; num_print--; } /* reverse number direction */ while (num_len > 0) { if (precision && (len < buf_size)) buf[len++] = number_buffer[num_len-1]; num_len--; } /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else if (*iter == 'f') { /* floating point */ const char *num_iter; int cur_precision = (precision < 0) ? 6: precision; int prefix, cur_width = NK_MAX(width, 0); double value = va_arg(args, double); int num_len = 0, frac_len = 0, dot = 0; int padding = 0; NK_ASSERT(arg_type == NK_ARG_TYPE_DEFAULT); NK_DTOA(number_buffer, value); num_len = nk_strlen(number_buffer); /* calculate padding */ num_iter = number_buffer; while (*num_iter && *num_iter != '.') num_iter++; prefix = (*num_iter == '.')?(int)(num_iter - number_buffer)+1:0; padding = NK_MAX(cur_width - (prefix + NK_MIN(cur_precision, num_len - prefix)) , 0); if ((flag & NK_ARG_FLAG_PLUS) || (flag & NK_ARG_FLAG_SPACE)) padding = NK_MAX(padding-1, 0); /* fill left padding up to a total of `width` characters */ if (!(flag & NK_ARG_FLAG_LEFT)) { while (padding-- > 0 && (len < buf_size)) { if (flag & NK_ARG_FLAG_ZERO) buf[len++] = '0'; else buf[len++] = ' '; } } /* copy string value representation into buffer */ num_iter = number_buffer; if ((flag & NK_ARG_FLAG_PLUS) && (value >= 0) && (len < buf_size)) buf[len++] = '+'; else if ((flag & NK_ARG_FLAG_SPACE) && (value >= 0) && (len < buf_size)) buf[len++] = ' '; while (*num_iter) { if (dot) frac_len++; if (len < buf_size) buf[len++] = *num_iter; if (*num_iter == '.') dot = 1; if (frac_len >= cur_precision) break; num_iter++; } /* fill number up to precision */ while (frac_len < cur_precision) { if (!dot && len < buf_size) { buf[len++] = '.'; dot = 1; } if (len < buf_size) buf[len++] = '0'; frac_len++; } /* fill right padding up to width characters */ if (flag & NK_ARG_FLAG_LEFT) { while ((padding-- > 0) && (len < buf_size)) buf[len++] = ' '; } } else { /* Specifier not supported: g,G,e,E,p,z */ NK_ASSERT(0 && "specifier is not supported!"); return result; } } buf[(len >= buf_size)?(buf_size-1):len] = 0; result = (len >= buf_size)?-1:len; return result; } #endif NK_LIB int nk_strfmt(char *buf, int buf_size, const char *fmt, va_list args) { int result = -1; NK_ASSERT(buf); NK_ASSERT(buf_size); if (!buf || !buf_size || !fmt) return 0; #ifdef NK_INCLUDE_STANDARD_IO result = NK_VSNPRINTF(buf, (nk_size)buf_size, fmt, args); result = (result >= buf_size) ? -1: result; buf[buf_size-1] = 0; #else result = nk_vsnprintf(buf, buf_size, fmt, args); #endif return result; } #endif NK_API nk_hash nk_murmur_hash(const void * key, int len, nk_hash seed) { /* 32-Bit MurmurHash3: https://code.google.com/p/smhasher/wiki/MurmurHash3*/ #define NK_ROTL(x,r) ((x) << (r) | ((x) >> (32 - r))) nk_uint h1 = seed; nk_uint k1; const nk_byte *data = (const nk_byte*)key; const nk_byte *keyptr = data; nk_byte *k1ptr; const int bsize = sizeof(k1); const int nblocks = len/4; const nk_uint c1 = 0xcc9e2d51; const nk_uint c2 = 0x1b873593; const nk_byte *tail; int i; /* body */ if (!key) return 0; for (i = 0; i < nblocks; ++i, keyptr += bsize) { k1ptr = (nk_byte*)&k1; k1ptr[0] = keyptr[0]; k1ptr[1] = keyptr[1]; k1ptr[2] = keyptr[2]; k1ptr[3] = keyptr[3]; k1 *= c1; k1 = NK_ROTL(k1,15); k1 *= c2; h1 ^= k1; h1 = NK_ROTL(h1,13); h1 = h1*5+0xe6546b64; } /* tail */ tail = (const nk_byte*)(data + nblocks*4); k1 = 0; switch (len & 3) { case 3: k1 ^= (nk_uint)(tail[2] << 16); /* fallthrough */ case 2: k1 ^= (nk_uint)(tail[1] << 8u); /* fallthrough */ case 1: k1 ^= tail[0]; k1 *= c1; k1 = NK_ROTL(k1,15); k1 *= c2; h1 ^= k1; break; default: break; } /* finalization */ h1 ^= (nk_uint)len; /* fmix32 */ h1 ^= h1 >> 16; h1 *= 0x85ebca6b; h1 ^= h1 >> 13; h1 *= 0xc2b2ae35; h1 ^= h1 >> 16; #undef NK_ROTL return h1; } #ifdef NK_INCLUDE_STANDARD_IO NK_LIB char* nk_file_load(const char* path, nk_size* siz, struct nk_allocator *alloc) { char *buf; FILE *fd; long ret; NK_ASSERT(path); NK_ASSERT(siz); NK_ASSERT(alloc); if (!path || !siz || !alloc) return 0; fd = fopen(path, "rb"); if (!fd) return 0; fseek(fd, 0, SEEK_END); ret = ftell(fd); if (ret < 0) { fclose(fd); return 0; } *siz = (nk_size)ret; fseek(fd, 0, SEEK_SET); buf = (char*)alloc->alloc(alloc->userdata,0, *siz); NK_ASSERT(buf); if (!buf) { fclose(fd); return 0; } *siz = (nk_size)fread(buf, 1,*siz, fd); fclose(fd); return buf; } #endif NK_LIB int nk_text_clamp(const struct nk_user_font *font, const char *text, int text_len, float space, int *glyphs, float *text_width, nk_rune *sep_list, int sep_count) { int i = 0; int glyph_len = 0; float last_width = 0; nk_rune unicode = 0; float width = 0; int len = 0; int g = 0; float s; int sep_len = 0; int sep_g = 0; float sep_width = 0; sep_count = NK_MAX(sep_count,0); glyph_len = nk_utf_decode(text, &unicode, text_len); while (glyph_len && (width < space) && (len < text_len)) { len += glyph_len; s = font->width(font->userdata, font->height, text, len); for (i = 0; i < sep_count; ++i) { if (unicode != sep_list[i]) continue; sep_width = last_width = width; sep_g = g+1; sep_len = len; break; } if (i == sep_count){ last_width = sep_width = width; sep_g = g+1; } width = s; glyph_len = nk_utf_decode(&text[len], &unicode, text_len - len); g++; } if (len >= text_len) { *glyphs = g; *text_width = last_width; return len; } else { *glyphs = sep_g; *text_width = sep_width; return (!sep_len) ? len: sep_len; } } NK_LIB struct nk_vec2 nk_text_calculate_text_bounds(const struct nk_user_font *font, const char *begin, int byte_len, float row_height, const char **remaining, struct nk_vec2 *out_offset, int *glyphs, int op) { float line_height = row_height; struct nk_vec2 text_size = nk_vec2(0,0); float line_width = 0.0f; float glyph_width; int glyph_len = 0; nk_rune unicode = 0; int text_len = 0; if (!begin || byte_len <= 0 || !font) return nk_vec2(0,row_height); glyph_len = nk_utf_decode(begin, &unicode, byte_len); if (!glyph_len) return text_size; glyph_width = font->width(font->userdata, font->height, begin, glyph_len); *glyphs = 0; while ((text_len < byte_len) && glyph_len) { if (unicode == '\n') { text_size.x = NK_MAX(text_size.x, line_width); text_size.y += line_height; line_width = 0; *glyphs+=1; if (op == NK_STOP_ON_NEW_LINE) break; text_len++; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); continue; } if (unicode == '\r') { text_len++; *glyphs+=1; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); continue; } *glyphs = *glyphs + 1; text_len += glyph_len; line_width += (float)glyph_width; glyph_len = nk_utf_decode(begin + text_len, &unicode, byte_len-text_len); glyph_width = font->width(font->userdata, font->height, begin+text_len, glyph_len); continue; } if (text_size.x < line_width) text_size.x = line_width; if (out_offset) *out_offset = nk_vec2(line_width, text_size.y + line_height); if (line_width > 0 || text_size.y == 0.0f) text_size.y += line_height; if (remaining) *remaining = begin+text_len; return text_size; } ================================================ FILE: src/nuklear_vertex.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * VERTEX * * ===============================================================*/ #ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT NK_API void nk_draw_list_init(struct nk_draw_list *list) { nk_size i = 0; NK_ASSERT(list); if (!list) return; nk_zero(list, sizeof(*list)); for (i = 0; i < NK_LEN(list->circle_vtx); ++i) { const float a = ((float)i / (float)NK_LEN(list->circle_vtx)) * 2 * NK_PI; list->circle_vtx[i].x = (float)NK_COS(a); list->circle_vtx[i].y = (float)NK_SIN(a); } } NK_API void nk_draw_list_setup(struct nk_draw_list *canvas, const struct nk_convert_config *config, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, enum nk_anti_aliasing line_aa, enum nk_anti_aliasing shape_aa) { NK_ASSERT(canvas); NK_ASSERT(config); NK_ASSERT(cmds); NK_ASSERT(vertices); NK_ASSERT(elements); if (!canvas || !config || !cmds || !vertices || !elements) return; canvas->buffer = cmds; canvas->config = *config; canvas->elements = elements; canvas->vertices = vertices; canvas->line_AA = line_aa; canvas->shape_AA = shape_aa; canvas->clip_rect = nk_null_rect; canvas->cmd_offset = 0; canvas->element_count = 0; canvas->vertex_count = 0; canvas->cmd_offset = 0; canvas->cmd_count = 0; canvas->path_count = 0; } NK_API const struct nk_draw_command* nk__draw_list_begin(const struct nk_draw_list *canvas, const struct nk_buffer *buffer) { nk_byte *memory; nk_size offset; const struct nk_draw_command *cmd; NK_ASSERT(buffer); if (!buffer || !buffer->size || !canvas->cmd_count) return 0; memory = (nk_byte*)buffer->memory.ptr; offset = buffer->memory.size - canvas->cmd_offset; cmd = nk_ptr_add(const struct nk_draw_command, memory, offset); return cmd; } NK_API const struct nk_draw_command* nk__draw_list_end(const struct nk_draw_list *canvas, const struct nk_buffer *buffer) { nk_size size; nk_size offset; nk_byte *memory; const struct nk_draw_command *end; NK_ASSERT(buffer); NK_ASSERT(canvas); if (!buffer || !canvas) return 0; memory = (nk_byte*)buffer->memory.ptr; size = buffer->memory.size; offset = size - canvas->cmd_offset; end = nk_ptr_add(const struct nk_draw_command, memory, offset); end -= (canvas->cmd_count-1); return end; } NK_API const struct nk_draw_command* nk__draw_list_next(const struct nk_draw_command *cmd, const struct nk_buffer *buffer, const struct nk_draw_list *canvas) { const struct nk_draw_command *end; NK_ASSERT(buffer); NK_ASSERT(canvas); if (!cmd || !buffer || !canvas) return 0; end = nk__draw_list_end(canvas, buffer); if (cmd <= end) return 0; return (cmd-1); } NK_INTERN struct nk_vec2* nk_draw_list_alloc_path(struct nk_draw_list *list, int count) { struct nk_vec2 *points; NK_STORAGE const nk_size point_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size point_size = sizeof(struct nk_vec2); points = (struct nk_vec2*) nk_buffer_alloc(list->buffer, NK_BUFFER_FRONT, point_size * (nk_size)count, point_align); if (!points) return 0; if (!list->path_offset) { void *memory = nk_buffer_memory(list->buffer); list->path_offset = (unsigned int)((nk_byte*)points - (nk_byte*)memory); } list->path_count += (unsigned int)count; return points; } NK_INTERN struct nk_vec2 nk_draw_list_path_last(struct nk_draw_list *list) { void *memory; struct nk_vec2 *point; NK_ASSERT(list->path_count); memory = nk_buffer_memory(list->buffer); point = nk_ptr_add(struct nk_vec2, memory, list->path_offset); point += (list->path_count-1); return *point; } NK_INTERN struct nk_draw_command* nk_draw_list_push_command(struct nk_draw_list *list, struct nk_rect clip, nk_handle texture) { NK_STORAGE const nk_size cmd_align = NK_ALIGNOF(struct nk_draw_command); NK_STORAGE const nk_size cmd_size = sizeof(struct nk_draw_command); struct nk_draw_command *cmd; NK_ASSERT(list); cmd = (struct nk_draw_command*) nk_buffer_alloc(list->buffer, NK_BUFFER_BACK, cmd_size, cmd_align); if (!cmd) return 0; if (!list->cmd_count) { nk_byte *memory = (nk_byte*)nk_buffer_memory(list->buffer); nk_size total = nk_buffer_total(list->buffer); memory = nk_ptr_add(nk_byte, memory, total); list->cmd_offset = (nk_size)(memory - (nk_byte*)cmd); } cmd->elem_count = 0; cmd->clip_rect = clip; cmd->texture = texture; #ifdef NK_INCLUDE_COMMAND_USERDATA cmd->userdata = list->userdata; #endif list->cmd_count++; list->clip_rect = clip; return cmd; } NK_INTERN struct nk_draw_command* nk_draw_list_command_last(struct nk_draw_list *list) { void *memory; nk_size size; struct nk_draw_command *cmd; NK_ASSERT(list->cmd_count); memory = nk_buffer_memory(list->buffer); size = nk_buffer_total(list->buffer); cmd = nk_ptr_add(struct nk_draw_command, memory, size - list->cmd_offset); return (cmd - (list->cmd_count-1)); } NK_INTERN void nk_draw_list_add_clip(struct nk_draw_list *list, struct nk_rect rect) { NK_ASSERT(list); if (!list) return; if (!list->cmd_count) { nk_draw_list_push_command(list, rect, list->config.null.texture); } else { struct nk_draw_command *prev = nk_draw_list_command_last(list); if (prev->elem_count == 0) prev->clip_rect = rect; nk_draw_list_push_command(list, rect, prev->texture); } } NK_INTERN void nk_draw_list_push_image(struct nk_draw_list *list, nk_handle texture) { NK_ASSERT(list); if (!list) return; if (!list->cmd_count) { nk_draw_list_push_command(list, nk_null_rect, texture); } else { struct nk_draw_command *prev = nk_draw_list_command_last(list); if (prev->elem_count == 0) { prev->texture = texture; #ifdef NK_INCLUDE_COMMAND_USERDATA prev->userdata = list->userdata; #endif } else if (prev->texture.id != texture.id #ifdef NK_INCLUDE_COMMAND_USERDATA || prev->userdata.id != list->userdata.id #endif ) nk_draw_list_push_command(list, prev->clip_rect, texture); } } #ifdef NK_INCLUDE_COMMAND_USERDATA NK_API void nk_draw_list_push_userdata(struct nk_draw_list *list, nk_handle userdata) { list->userdata = userdata; } #endif NK_INTERN void* nk_draw_list_alloc_vertices(struct nk_draw_list *list, nk_size count) { void *vtx; NK_ASSERT(list); if (!list) return 0; vtx = nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, list->config.vertex_size*count, list->config.vertex_alignment); if (!vtx) return 0; list->vertex_count += (unsigned int)count; /* This assert triggers because your are drawing a lot of stuff and nuklear * defined `nk_draw_index` as `nk_ushort` to safe space be default. * * So you reached the maximum number of indicies or rather vertexes. * To solve this issue please change typdef `nk_draw_index` to `nk_uint` * and don't forget to specify the new element size in your drawing * backend (OpenGL, DirectX, ...). For example in OpenGL for `glDrawElements` * instead of specifing `GL_UNSIGNED_SHORT` you have to define `GL_UNSIGNED_INT`. * Sorry for the inconvenience. */ if(sizeof(nk_draw_index)==2) NK_ASSERT((list->vertex_count < NK_USHORT_MAX && "To many verticies for 16-bit vertex indicies. Please read comment above on how to solve this problem")); return vtx; } NK_INTERN nk_draw_index* nk_draw_list_alloc_elements(struct nk_draw_list *list, nk_size count) { nk_draw_index *ids; struct nk_draw_command *cmd; NK_STORAGE const nk_size elem_align = NK_ALIGNOF(nk_draw_index); NK_STORAGE const nk_size elem_size = sizeof(nk_draw_index); NK_ASSERT(list); if (!list) return 0; ids = (nk_draw_index*) nk_buffer_alloc(list->elements, NK_BUFFER_FRONT, elem_size*count, elem_align); if (!ids) return 0; cmd = nk_draw_list_command_last(list); list->element_count += (unsigned int)count; cmd->elem_count += (unsigned int)count; return ids; } NK_INTERN int nk_draw_vertex_layout_element_is_end_of_layout( const struct nk_draw_vertex_layout_element *element) { return (element->attribute == NK_VERTEX_ATTRIBUTE_COUNT || element->format == NK_FORMAT_COUNT); } NK_INTERN void nk_draw_vertex_color(void *attr, const float *vals, enum nk_draw_vertex_layout_format format) { /* if this triggers you tried to provide a value format for a color */ float val[4]; NK_ASSERT(format >= NK_FORMAT_COLOR_BEGIN); NK_ASSERT(format <= NK_FORMAT_COLOR_END); if (format < NK_FORMAT_COLOR_BEGIN || format > NK_FORMAT_COLOR_END) return; val[0] = NK_SATURATE(vals[0]); val[1] = NK_SATURATE(vals[1]); val[2] = NK_SATURATE(vals[2]); val[3] = NK_SATURATE(vals[3]); switch (format) { default: NK_ASSERT(0 && "Invalid vertex layout color format"); break; case NK_FORMAT_R8G8B8A8: case NK_FORMAT_R8G8B8: { struct nk_color col = nk_rgba_fv(val); NK_MEMCPY(attr, &col.r, sizeof(col)); } break; case NK_FORMAT_B8G8R8A8: { struct nk_color col = nk_rgba_fv(val); struct nk_color bgra = nk_rgba(col.b, col.g, col.r, col.a); NK_MEMCPY(attr, &bgra, sizeof(bgra)); } break; case NK_FORMAT_R16G15B16: { nk_ushort col[3]; col[0] = (nk_ushort)(val[0]*(float)NK_USHORT_MAX); col[1] = (nk_ushort)(val[1]*(float)NK_USHORT_MAX); col[2] = (nk_ushort)(val[2]*(float)NK_USHORT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R16G15B16A16: { nk_ushort col[4]; col[0] = (nk_ushort)(val[0]*(float)NK_USHORT_MAX); col[1] = (nk_ushort)(val[1]*(float)NK_USHORT_MAX); col[2] = (nk_ushort)(val[2]*(float)NK_USHORT_MAX); col[3] = (nk_ushort)(val[3]*(float)NK_USHORT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32: { nk_uint col[3]; col[0] = (nk_uint)(val[0]*(float)NK_UINT_MAX); col[1] = (nk_uint)(val[1]*(float)NK_UINT_MAX); col[2] = (nk_uint)(val[2]*(float)NK_UINT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32A32: { nk_uint col[4]; col[0] = (nk_uint)(val[0]*(float)NK_UINT_MAX); col[1] = (nk_uint)(val[1]*(float)NK_UINT_MAX); col[2] = (nk_uint)(val[2]*(float)NK_UINT_MAX); col[3] = (nk_uint)(val[3]*(float)NK_UINT_MAX); NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_R32G32B32A32_FLOAT: NK_MEMCPY(attr, val, sizeof(float)*4); break; case NK_FORMAT_R32G32B32A32_DOUBLE: { double col[4]; col[0] = (double)val[0]; col[1] = (double)val[1]; col[2] = (double)val[2]; col[3] = (double)val[3]; NK_MEMCPY(attr, col, sizeof(col)); } break; case NK_FORMAT_RGB32: case NK_FORMAT_RGBA32: { struct nk_color col = nk_rgba_fv(val); nk_uint color = nk_color_u32(col); NK_MEMCPY(attr, &color, sizeof(color)); } break; } } NK_INTERN void nk_draw_vertex_element(void *dst, const float *values, int value_count, enum nk_draw_vertex_layout_format format) { int value_index; void *attribute = dst; /* if this triggers you tried to provide a color format for a value */ NK_ASSERT(format < NK_FORMAT_COLOR_BEGIN); if (format >= NK_FORMAT_COLOR_BEGIN && format <= NK_FORMAT_COLOR_END) return; for (value_index = 0; value_index < value_count; ++value_index) { switch (format) { default: NK_ASSERT(0 && "invalid vertex layout format"); break; case NK_FORMAT_SCHAR: { char value = (char)NK_CLAMP((float)NK_SCHAR_MIN, values[value_index], (float)NK_SCHAR_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(char)); } break; case NK_FORMAT_SSHORT: { nk_short value = (nk_short)NK_CLAMP((float)NK_SSHORT_MIN, values[value_index], (float)NK_SSHORT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(value)); } break; case NK_FORMAT_SINT: { nk_int value = (nk_int)NK_CLAMP((float)NK_SINT_MIN, values[value_index], (float)NK_SINT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(nk_int)); } break; case NK_FORMAT_UCHAR: { unsigned char value = (unsigned char)NK_CLAMP((float)NK_UCHAR_MIN, values[value_index], (float)NK_UCHAR_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(unsigned char)); } break; case NK_FORMAT_USHORT: { nk_ushort value = (nk_ushort)NK_CLAMP((float)NK_USHORT_MIN, values[value_index], (float)NK_USHORT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(value)); } break; case NK_FORMAT_UINT: { nk_uint value = (nk_uint)NK_CLAMP((float)NK_UINT_MIN, values[value_index], (float)NK_UINT_MAX); NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(nk_uint)); } break; case NK_FORMAT_FLOAT: NK_MEMCPY(attribute, &values[value_index], sizeof(values[value_index])); attribute = (void*)((char*)attribute + sizeof(float)); break; case NK_FORMAT_DOUBLE: { double value = (double)values[value_index]; NK_MEMCPY(attribute, &value, sizeof(value)); attribute = (void*)((char*)attribute + sizeof(double)); } break; } } } NK_INTERN void* nk_draw_vertex(void *dst, const struct nk_convert_config *config, struct nk_vec2 pos, struct nk_vec2 uv, struct nk_colorf color) { void *result = (void*)((char*)dst + config->vertex_size); const struct nk_draw_vertex_layout_element *elem_iter = config->vertex_layout; while (!nk_draw_vertex_layout_element_is_end_of_layout(elem_iter)) { void *address = (void*)((char*)dst + elem_iter->offset); switch (elem_iter->attribute) { case NK_VERTEX_ATTRIBUTE_COUNT: default: NK_ASSERT(0 && "wrong element attribute"); break; case NK_VERTEX_POSITION: nk_draw_vertex_element(address, &pos.x, 2, elem_iter->format); break; case NK_VERTEX_TEXCOORD: nk_draw_vertex_element(address, &uv.x, 2, elem_iter->format); break; case NK_VERTEX_COLOR: nk_draw_vertex_color(address, &color.r, elem_iter->format); break; } elem_iter++; } return result; } NK_API void nk_draw_list_stroke_poly_line(struct nk_draw_list *list, const struct nk_vec2 *points, const unsigned int points_count, struct nk_color color, enum nk_draw_list_stroke closed, float thickness, enum nk_anti_aliasing aliasing) { nk_size count; int thick_line; struct nk_colorf col; struct nk_colorf col_trans; NK_ASSERT(list); if (!list || points_count < 2) return; color.a = (nk_byte)((float)color.a * list->config.global_alpha); count = points_count; if (!closed) count = points_count-1; thick_line = thickness > 1.0f; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_draw_list_push_userdata(list, list->userdata); #endif color.a = (nk_byte)((float)color.a * list->config.global_alpha); nk_color_fv(&col.r, color); col_trans = col; col_trans.a = 0; if (aliasing == NK_ANTI_ALIASING_ON) { /* ANTI-ALIASED STROKE */ const float AA_SIZE = 1.0f; NK_STORAGE const nk_size pnt_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size pnt_size = sizeof(struct nk_vec2); /* allocate vertices and elements */ nk_size i1 = 0; nk_size vertex_offset; nk_size index = list->vertex_count; const nk_size idx_count = (thick_line) ? (count * 18) : (count * 12); const nk_size vtx_count = (thick_line) ? (points_count * 4): (points_count *3); void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); nk_size size; struct nk_vec2 *normals, *temp; if (!vtx || !ids) return; /* temporary allocate normals + points */ vertex_offset = (nk_size)((nk_byte*)vtx - (nk_byte*)list->vertices->memory.ptr); nk_buffer_mark(list->vertices, NK_BUFFER_FRONT); size = pnt_size * ((thick_line) ? 5 : 3) * points_count; normals = (struct nk_vec2*) nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, size, pnt_align); if (!normals) return; temp = normals + points_count; /* make sure vertex pointer is still correct */ vtx = (void*)((nk_byte*)list->vertices->memory.ptr + vertex_offset); /* calculate normals */ for (i1 = 0; i1 < count; ++i1) { const nk_size i2 = ((i1 + 1) == points_count) ? 0 : (i1 + 1); struct nk_vec2 diff = nk_vec2_sub(points[i2], points[i1]); float len; /* vec2 inverted length */ len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); normals[i1].x = diff.y; normals[i1].y = -diff.x; } if (!closed) normals[points_count-1] = normals[points_count-2]; if (!thick_line) { nk_size idx1, i; if (!closed) { struct nk_vec2 d; temp[0] = nk_vec2_add(points[0], nk_vec2_muls(normals[0], AA_SIZE)); temp[1] = nk_vec2_sub(points[0], nk_vec2_muls(normals[0], AA_SIZE)); d = nk_vec2_muls(normals[points_count-1], AA_SIZE); temp[(points_count-1) * 2 + 0] = nk_vec2_add(points[points_count-1], d); temp[(points_count-1) * 2 + 1] = nk_vec2_sub(points[points_count-1], d); } /* fill elements */ idx1 = index; for (i1 = 0; i1 < count; i1++) { struct nk_vec2 dm; float dmr2; nk_size i2 = ((i1 + 1) == points_count) ? 0 : (i1 + 1); nk_size idx2 = ((i1+1) == points_count) ? index: (idx1 + 3); /* average normals */ dm = nk_vec2_muls(nk_vec2_add(normals[i1], normals[i2]), 0.5f); dmr2 = dm.x * dm.x + dm.y* dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f/dmr2; scale = NK_MIN(100.0f, scale); dm = nk_vec2_muls(dm, scale); } dm = nk_vec2_muls(dm, AA_SIZE); temp[i2*2+0] = nk_vec2_add(points[i2], dm); temp[i2*2+1] = nk_vec2_sub(points[i2], dm); ids[0] = (nk_draw_index)(idx2 + 0); ids[1] = (nk_draw_index)(idx1+0); ids[2] = (nk_draw_index)(idx1 + 2); ids[3] = (nk_draw_index)(idx1+2); ids[4] = (nk_draw_index)(idx2 + 2); ids[5] = (nk_draw_index)(idx2+0); ids[6] = (nk_draw_index)(idx2 + 1); ids[7] = (nk_draw_index)(idx1+1); ids[8] = (nk_draw_index)(idx1 + 0); ids[9] = (nk_draw_index)(idx1+0); ids[10]= (nk_draw_index)(idx2 + 0); ids[11]= (nk_draw_index)(idx2+1); ids += 12; idx1 = idx2; } /* fill vertices */ for (i = 0; i < points_count; ++i) { const struct nk_vec2 uv = list->config.null.uv; vtx = nk_draw_vertex(vtx, &list->config, points[i], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*2+0], uv, col_trans); vtx = nk_draw_vertex(vtx, &list->config, temp[i*2+1], uv, col_trans); } } else { nk_size idx1, i; const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f; if (!closed) { struct nk_vec2 d1 = nk_vec2_muls(normals[0], half_inner_thickness + AA_SIZE); struct nk_vec2 d2 = nk_vec2_muls(normals[0], half_inner_thickness); temp[0] = nk_vec2_add(points[0], d1); temp[1] = nk_vec2_add(points[0], d2); temp[2] = nk_vec2_sub(points[0], d2); temp[3] = nk_vec2_sub(points[0], d1); d1 = nk_vec2_muls(normals[points_count-1], half_inner_thickness + AA_SIZE); d2 = nk_vec2_muls(normals[points_count-1], half_inner_thickness); temp[(points_count-1)*4+0] = nk_vec2_add(points[points_count-1], d1); temp[(points_count-1)*4+1] = nk_vec2_add(points[points_count-1], d2); temp[(points_count-1)*4+2] = nk_vec2_sub(points[points_count-1], d2); temp[(points_count-1)*4+3] = nk_vec2_sub(points[points_count-1], d1); } /* add all elements */ idx1 = index; for (i1 = 0; i1 < count; ++i1) { struct nk_vec2 dm_out, dm_in; const nk_size i2 = ((i1+1) == points_count) ? 0: (i1 + 1); nk_size idx2 = ((i1+1) == points_count) ? index: (idx1 + 4); /* average normals */ struct nk_vec2 dm = nk_vec2_muls(nk_vec2_add(normals[i1], normals[i2]), 0.5f); float dmr2 = dm.x * dm.x + dm.y* dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f/dmr2; scale = NK_MIN(100.0f, scale); dm = nk_vec2_muls(dm, scale); } dm_out = nk_vec2_muls(dm, ((half_inner_thickness) + AA_SIZE)); dm_in = nk_vec2_muls(dm, half_inner_thickness); temp[i2*4+0] = nk_vec2_add(points[i2], dm_out); temp[i2*4+1] = nk_vec2_add(points[i2], dm_in); temp[i2*4+2] = nk_vec2_sub(points[i2], dm_in); temp[i2*4+3] = nk_vec2_sub(points[i2], dm_out); /* add indexes */ ids[0] = (nk_draw_index)(idx2 + 1); ids[1] = (nk_draw_index)(idx1+1); ids[2] = (nk_draw_index)(idx1 + 2); ids[3] = (nk_draw_index)(idx1+2); ids[4] = (nk_draw_index)(idx2 + 2); ids[5] = (nk_draw_index)(idx2+1); ids[6] = (nk_draw_index)(idx2 + 1); ids[7] = (nk_draw_index)(idx1+1); ids[8] = (nk_draw_index)(idx1 + 0); ids[9] = (nk_draw_index)(idx1+0); ids[10]= (nk_draw_index)(idx2 + 0); ids[11] = (nk_draw_index)(idx2+1); ids[12]= (nk_draw_index)(idx2 + 2); ids[13] = (nk_draw_index)(idx1+2); ids[14]= (nk_draw_index)(idx1 + 3); ids[15] = (nk_draw_index)(idx1+3); ids[16]= (nk_draw_index)(idx2 + 3); ids[17] = (nk_draw_index)(idx2+2); ids += 18; idx1 = idx2; } /* add vertices */ for (i = 0; i < points_count; ++i) { const struct nk_vec2 uv = list->config.null.uv; vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+0], uv, col_trans); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+1], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+2], uv, col); vtx = nk_draw_vertex(vtx, &list->config, temp[i*4+3], uv, col_trans); } } /* free temporary normals + points */ nk_buffer_reset(list->vertices, NK_BUFFER_FRONT); } else { /* NON ANTI-ALIASED STROKE */ nk_size i1 = 0; nk_size idx = list->vertex_count; const nk_size idx_count = count * 6; const nk_size vtx_count = count * 4; void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); if (!vtx || !ids) return; for (i1 = 0; i1 < count; ++i1) { float dx, dy; const struct nk_vec2 uv = list->config.null.uv; const nk_size i2 = ((i1+1) == points_count) ? 0 : i1 + 1; const struct nk_vec2 p1 = points[i1]; const struct nk_vec2 p2 = points[i2]; struct nk_vec2 diff = nk_vec2_sub(p2, p1); float len; /* vec2 inverted length */ len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); /* add vertices */ dx = diff.x * (thickness * 0.5f); dy = diff.y * (thickness * 0.5f); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p1.x + dy, p1.y - dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p2.x + dy, p2.y - dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p2.x - dy, p2.y + dx), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(p1.x - dy, p1.y + dx), uv, col); ids[0] = (nk_draw_index)(idx+0); ids[1] = (nk_draw_index)(idx+1); ids[2] = (nk_draw_index)(idx+2); ids[3] = (nk_draw_index)(idx+0); ids[4] = (nk_draw_index)(idx+2); ids[5] = (nk_draw_index)(idx+3); ids += 6; idx += 4; } } } NK_API void nk_draw_list_fill_poly_convex(struct nk_draw_list *list, const struct nk_vec2 *points, const unsigned int points_count, struct nk_color color, enum nk_anti_aliasing aliasing) { struct nk_colorf col; struct nk_colorf col_trans; NK_STORAGE const nk_size pnt_align = NK_ALIGNOF(struct nk_vec2); NK_STORAGE const nk_size pnt_size = sizeof(struct nk_vec2); NK_ASSERT(list); if (!list || points_count < 3) return; #ifdef NK_INCLUDE_COMMAND_USERDATA nk_draw_list_push_userdata(list, list->userdata); #endif color.a = (nk_byte)((float)color.a * list->config.global_alpha); nk_color_fv(&col.r, color); col_trans = col; col_trans.a = 0; if (aliasing == NK_ANTI_ALIASING_ON) { nk_size i = 0; nk_size i0 = 0; nk_size i1 = 0; const float AA_SIZE = 1.0f; nk_size vertex_offset = 0; nk_size index = list->vertex_count; const nk_size idx_count = (points_count-2)*3 + points_count*6; const nk_size vtx_count = (points_count*2); void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); nk_size size = 0; struct nk_vec2 *normals = 0; unsigned int vtx_inner_idx = (unsigned int)(index + 0); unsigned int vtx_outer_idx = (unsigned int)(index + 1); if (!vtx || !ids) return; /* temporary allocate normals */ vertex_offset = (nk_size)((nk_byte*)vtx - (nk_byte*)list->vertices->memory.ptr); nk_buffer_mark(list->vertices, NK_BUFFER_FRONT); size = pnt_size * points_count; normals = (struct nk_vec2*) nk_buffer_alloc(list->vertices, NK_BUFFER_FRONT, size, pnt_align); if (!normals) return; vtx = (void*)((nk_byte*)list->vertices->memory.ptr + vertex_offset); /* add elements */ for (i = 2; i < points_count; i++) { ids[0] = (nk_draw_index)(vtx_inner_idx); ids[1] = (nk_draw_index)(vtx_inner_idx + ((i-1) << 1)); ids[2] = (nk_draw_index)(vtx_inner_idx + (i << 1)); ids += 3; } /* compute normals */ for (i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++) { struct nk_vec2 p0 = points[i0]; struct nk_vec2 p1 = points[i1]; struct nk_vec2 diff = nk_vec2_sub(p1, p0); /* vec2 inverted length */ float len = nk_vec2_len_sqr(diff); if (len != 0.0f) len = nk_inv_sqrt(len); else len = 1.0f; diff = nk_vec2_muls(diff, len); normals[i0].x = diff.y; normals[i0].y = -diff.x; } /* add vertices + indexes */ for (i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++) { const struct nk_vec2 uv = list->config.null.uv; struct nk_vec2 n0 = normals[i0]; struct nk_vec2 n1 = normals[i1]; struct nk_vec2 dm = nk_vec2_muls(nk_vec2_add(n0, n1), 0.5f); float dmr2 = dm.x*dm.x + dm.y*dm.y; if (dmr2 > 0.000001f) { float scale = 1.0f / dmr2; scale = NK_MIN(scale, 100.0f); dm = nk_vec2_muls(dm, scale); } dm = nk_vec2_muls(dm, AA_SIZE * 0.5f); /* add vertices */ vtx = nk_draw_vertex(vtx, &list->config, nk_vec2_sub(points[i1], dm), uv, col); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2_add(points[i1], dm), uv, col_trans); /* add indexes */ ids[0] = (nk_draw_index)(vtx_inner_idx+(i1<<1)); ids[1] = (nk_draw_index)(vtx_inner_idx+(i0<<1)); ids[2] = (nk_draw_index)(vtx_outer_idx+(i0<<1)); ids[3] = (nk_draw_index)(vtx_outer_idx+(i0<<1)); ids[4] = (nk_draw_index)(vtx_outer_idx+(i1<<1)); ids[5] = (nk_draw_index)(vtx_inner_idx+(i1<<1)); ids += 6; } /* free temporary normals + points */ nk_buffer_reset(list->vertices, NK_BUFFER_FRONT); } else { nk_size i = 0; nk_size index = list->vertex_count; const nk_size idx_count = (points_count-2)*3; const nk_size vtx_count = points_count; void *vtx = nk_draw_list_alloc_vertices(list, vtx_count); nk_draw_index *ids = nk_draw_list_alloc_elements(list, idx_count); if (!vtx || !ids) return; for (i = 0; i < vtx_count; ++i) vtx = nk_draw_vertex(vtx, &list->config, points[i], list->config.null.uv, col); for (i = 2; i < points_count; ++i) { ids[0] = (nk_draw_index)index; ids[1] = (nk_draw_index)(index+ i - 1); ids[2] = (nk_draw_index)(index+i); ids += 3; } } } NK_API void nk_draw_list_path_clear(struct nk_draw_list *list) { NK_ASSERT(list); if (!list) return; nk_buffer_reset(list->buffer, NK_BUFFER_FRONT); list->path_count = 0; list->path_offset = 0; } NK_API void nk_draw_list_path_line_to(struct nk_draw_list *list, struct nk_vec2 pos) { struct nk_vec2 *points = 0; struct nk_draw_command *cmd = 0; NK_ASSERT(list); if (!list) return; if (!list->cmd_count) nk_draw_list_add_clip(list, nk_null_rect); cmd = nk_draw_list_command_last(list); if (cmd && cmd->texture.ptr != list->config.null.texture.ptr) nk_draw_list_push_image(list, list->config.null.texture); points = nk_draw_list_alloc_path(list, 1); if (!points) return; points[0] = pos; } NK_API void nk_draw_list_path_arc_to_fast(struct nk_draw_list *list, struct nk_vec2 center, float radius, int a_min, int a_max) { int a = 0; NK_ASSERT(list); if (!list) return; if (a_min <= a_max) { for (a = a_min; a <= a_max; a++) { const struct nk_vec2 c = list->circle_vtx[(nk_size)a % NK_LEN(list->circle_vtx)]; const float x = center.x + c.x * radius; const float y = center.y + c.y * radius; nk_draw_list_path_line_to(list, nk_vec2(x, y)); } } } NK_API void nk_draw_list_path_arc_to(struct nk_draw_list *list, struct nk_vec2 center, float radius, float a_min, float a_max, unsigned int segments) { unsigned int i = 0; NK_ASSERT(list); if (!list) return; if (radius == 0.0f) return; /* This algorithm for arc drawing relies on these two trigonometric identities[1]: sin(a + b) = sin(a) * cos(b) + cos(a) * sin(b) cos(a + b) = cos(a) * cos(b) - sin(a) * sin(b) Two coordinates (x, y) of a point on a circle centered on the origin can be written in polar form as: x = r * cos(a) y = r * sin(a) where r is the radius of the circle, a is the angle between (x, y) and the origin. This allows us to rotate the coordinates around the origin by an angle b using the following transformation: x' = r * cos(a + b) = x * cos(b) - y * sin(b) y' = r * sin(a + b) = y * cos(b) + x * sin(b) [1] https://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities */ {const float d_angle = (a_max - a_min) / (float)segments; const float sin_d = (float)NK_SIN(d_angle); const float cos_d = (float)NK_COS(d_angle); float cx = (float)NK_COS(a_min) * radius; float cy = (float)NK_SIN(a_min) * radius; for(i = 0; i <= segments; ++i) { float new_cx, new_cy; const float x = center.x + cx; const float y = center.y + cy; nk_draw_list_path_line_to(list, nk_vec2(x, y)); new_cx = cx * cos_d - cy * sin_d; new_cy = cy * cos_d + cx * sin_d; cx = new_cx; cy = new_cy; }} } NK_API void nk_draw_list_path_rect_to(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, float rounding) { float r; NK_ASSERT(list); if (!list) return; r = rounding; r = NK_MIN(r, ((b.x-a.x) < 0) ? -(b.x-a.x): (b.x-a.x)); r = NK_MIN(r, ((b.y-a.y) < 0) ? -(b.y-a.y): (b.y-a.y)); if (r == 0.0f) { nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, nk_vec2(b.x,a.y)); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, nk_vec2(a.x,b.y)); } else { nk_draw_list_path_arc_to_fast(list, nk_vec2(a.x + r, a.y + r), r, 6, 9); nk_draw_list_path_arc_to_fast(list, nk_vec2(b.x - r, a.y + r), r, 9, 12); nk_draw_list_path_arc_to_fast(list, nk_vec2(b.x - r, b.y - r), r, 0, 3); nk_draw_list_path_arc_to_fast(list, nk_vec2(a.x + r, b.y - r), r, 3, 6); } } NK_API void nk_draw_list_path_curve_to(struct nk_draw_list *list, struct nk_vec2 p2, struct nk_vec2 p3, struct nk_vec2 p4, unsigned int num_segments) { float t_step; unsigned int i_step; struct nk_vec2 p1; NK_ASSERT(list); NK_ASSERT(list->path_count); if (!list || !list->path_count) return; num_segments = NK_MAX(num_segments, 1); p1 = nk_draw_list_path_last(list); t_step = 1.0f/(float)num_segments; for (i_step = 1; i_step <= num_segments; ++i_step) { float t = t_step * (float)i_step; float u = 1.0f - t; float w1 = u*u*u; float w2 = 3*u*u*t; float w3 = 3*u*t*t; float w4 = t * t *t; float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; nk_draw_list_path_line_to(list, nk_vec2(x,y)); } } NK_API void nk_draw_list_path_fill(struct nk_draw_list *list, struct nk_color color) { struct nk_vec2 *points; NK_ASSERT(list); if (!list) return; points = (struct nk_vec2*)nk_buffer_memory(list->buffer); nk_draw_list_fill_poly_convex(list, points, list->path_count, color, list->config.shape_AA); nk_draw_list_path_clear(list); } NK_API void nk_draw_list_path_stroke(struct nk_draw_list *list, struct nk_color color, enum nk_draw_list_stroke closed, float thickness) { struct nk_vec2 *points; NK_ASSERT(list); if (!list) return; points = (struct nk_vec2*)nk_buffer_memory(list->buffer); nk_draw_list_stroke_poly_line(list, points, list->path_count, color, closed, thickness, list->config.line_AA); nk_draw_list_path_clear(list); } NK_API void nk_draw_list_stroke_line(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_color col, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); } else { nk_draw_list_path_line_to(list, nk_vec2_sub(a,nk_vec2(0.5f,0.5f))); nk_draw_list_path_line_to(list, nk_vec2_sub(b,nk_vec2(0.5f,0.5f))); } nk_draw_list_path_stroke(list, col, NK_STROKE_OPEN, thickness); } NK_API void nk_draw_list_fill_rect(struct nk_draw_list *list, struct nk_rect rect, struct nk_color col, float rounding) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_rect_to(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } else { nk_draw_list_path_rect_to(list, nk_vec2(rect.x-0.5f, rect.y-0.5f), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_rect(struct nk_draw_list *list, struct nk_rect rect, struct nk_color col, float rounding, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; if (list->line_AA == NK_ANTI_ALIASING_ON) { nk_draw_list_path_rect_to(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } else { nk_draw_list_path_rect_to(list, nk_vec2(rect.x-0.5f, rect.y-0.5f), nk_vec2(rect.x + rect.w, rect.y + rect.h), rounding); } nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_fill_rect_multi_color(struct nk_draw_list *list, struct nk_rect rect, struct nk_color left, struct nk_color top, struct nk_color right, struct nk_color bottom) { void *vtx; struct nk_colorf col_left, col_top; struct nk_colorf col_right, col_bottom; nk_draw_index *idx; nk_draw_index index; nk_color_fv(&col_left.r, left); nk_color_fv(&col_right.r, right); nk_color_fv(&col_top.r, top); nk_color_fv(&col_bottom.r, bottom); NK_ASSERT(list); if (!list) return; nk_draw_list_push_image(list, list->config.null.texture); index = (nk_draw_index)list->vertex_count; vtx = nk_draw_list_alloc_vertices(list, 4); idx = nk_draw_list_alloc_elements(list, 6); if (!vtx || !idx) return; idx[0] = (nk_draw_index)(index+0); idx[1] = (nk_draw_index)(index+1); idx[2] = (nk_draw_index)(index+2); idx[3] = (nk_draw_index)(index+0); idx[4] = (nk_draw_index)(index+2); idx[5] = (nk_draw_index)(index+3); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x, rect.y), list->config.null.uv, col_left); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x + rect.w, rect.y), list->config.null.uv, col_top); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x + rect.w, rect.y + rect.h), list->config.null.uv, col_right); vtx = nk_draw_vertex(vtx, &list->config, nk_vec2(rect.x, rect.y + rect.h), list->config.null.uv, col_bottom); } NK_API void nk_draw_list_fill_triangle(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color col) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, c); nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_triangle(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 b, struct nk_vec2 c, struct nk_color col, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, a); nk_draw_list_path_line_to(list, b); nk_draw_list_path_line_to(list, c); nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_fill_circle(struct nk_draw_list *list, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs) { float a_max; NK_ASSERT(list); if (!list || !col.a) return; a_max = NK_PI * 2.0f * ((float)segs - 1.0f) / (float)segs; nk_draw_list_path_arc_to(list, center, radius, 0.0f, a_max, segs); nk_draw_list_path_fill(list, col); } NK_API void nk_draw_list_stroke_circle(struct nk_draw_list *list, struct nk_vec2 center, float radius, struct nk_color col, unsigned int segs, float thickness) { float a_max; NK_ASSERT(list); if (!list || !col.a) return; a_max = NK_PI * 2.0f * ((float)segs - 1.0f) / (float)segs; nk_draw_list_path_arc_to(list, center, radius, 0.0f, a_max, segs); nk_draw_list_path_stroke(list, col, NK_STROKE_CLOSED, thickness); } NK_API void nk_draw_list_stroke_curve(struct nk_draw_list *list, struct nk_vec2 p0, struct nk_vec2 cp0, struct nk_vec2 cp1, struct nk_vec2 p1, struct nk_color col, unsigned int segments, float thickness) { NK_ASSERT(list); if (!list || !col.a) return; nk_draw_list_path_line_to(list, p0); nk_draw_list_path_curve_to(list, cp0, cp1, p1, segments); nk_draw_list_path_stroke(list, col, NK_STROKE_OPEN, thickness); } NK_INTERN void nk_draw_list_push_rect_uv(struct nk_draw_list *list, struct nk_vec2 a, struct nk_vec2 c, struct nk_vec2 uva, struct nk_vec2 uvc, struct nk_color color) { void *vtx; struct nk_vec2 uvb; struct nk_vec2 uvd; struct nk_vec2 b; struct nk_vec2 d; struct nk_colorf col; nk_draw_index *idx; nk_draw_index index; NK_ASSERT(list); if (!list) return; nk_color_fv(&col.r, color); uvb = nk_vec2(uvc.x, uva.y); uvd = nk_vec2(uva.x, uvc.y); b = nk_vec2(c.x, a.y); d = nk_vec2(a.x, c.y); index = (nk_draw_index)list->vertex_count; vtx = nk_draw_list_alloc_vertices(list, 4); idx = nk_draw_list_alloc_elements(list, 6); if (!vtx || !idx) return; idx[0] = (nk_draw_index)(index+0); idx[1] = (nk_draw_index)(index+1); idx[2] = (nk_draw_index)(index+2); idx[3] = (nk_draw_index)(index+0); idx[4] = (nk_draw_index)(index+2); idx[5] = (nk_draw_index)(index+3); vtx = nk_draw_vertex(vtx, &list->config, a, uva, col); vtx = nk_draw_vertex(vtx, &list->config, b, uvb, col); vtx = nk_draw_vertex(vtx, &list->config, c, uvc, col); vtx = nk_draw_vertex(vtx, &list->config, d, uvd, col); } NK_API void nk_draw_list_add_image(struct nk_draw_list *list, struct nk_image texture, struct nk_rect rect, struct nk_color color) { NK_ASSERT(list); if (!list) return; /* push new command with given texture */ nk_draw_list_push_image(list, texture.handle); if (nk_image_is_subimage(&texture)) { /* add region inside of the texture */ struct nk_vec2 uv[2]; uv[0].x = (float)texture.region[0]/(float)texture.w; uv[0].y = (float)texture.region[1]/(float)texture.h; uv[1].x = (float)(texture.region[0] + texture.region[2])/(float)texture.w; uv[1].y = (float)(texture.region[1] + texture.region[3])/(float)texture.h; nk_draw_list_push_rect_uv(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), uv[0], uv[1], color); } else nk_draw_list_push_rect_uv(list, nk_vec2(rect.x, rect.y), nk_vec2(rect.x + rect.w, rect.y + rect.h), nk_vec2(0.0f, 0.0f), nk_vec2(1.0f, 1.0f),color); } NK_API void nk_draw_list_add_text(struct nk_draw_list *list, const struct nk_user_font *font, struct nk_rect rect, const char *text, int len, float font_height, struct nk_color fg) { float x = 0; int text_len = 0; nk_rune unicode = 0; nk_rune next = 0; int glyph_len = 0; int next_glyph_len = 0; struct nk_user_font_glyph g; NK_ASSERT(list); if (!list || !len || !text) return; if (!NK_INTERSECT(rect.x, rect.y, rect.w, rect.h, list->clip_rect.x, list->clip_rect.y, list->clip_rect.w, list->clip_rect.h)) return; nk_draw_list_push_image(list, font->texture); x = rect.x; glyph_len = nk_utf_decode(text, &unicode, len); if (!glyph_len) return; /* draw every glyph image */ fg.a = (nk_byte)((float)fg.a * list->config.global_alpha); while (text_len < len && glyph_len) { float gx, gy, gh, gw; float char_width = 0; if (unicode == NK_UTF_INVALID) break; /* query currently drawn glyph information */ next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len); font->query(font->userdata, font_height, &g, unicode, (next == NK_UTF_INVALID) ? '\0' : next); /* calculate and draw glyph drawing rectangle and image */ gx = x + g.offset.x; gy = rect.y + g.offset.y; gw = g.width; gh = g.height; char_width = g.xadvance; nk_draw_list_push_rect_uv(list, nk_vec2(gx,gy), nk_vec2(gx + gw, gy+ gh), g.uv[0], g.uv[1], fg); /* offset next glyph */ text_len += glyph_len; x += char_width; glyph_len = next_glyph_len; unicode = next; } } NK_API nk_flags nk_convert(struct nk_context *ctx, struct nk_buffer *cmds, struct nk_buffer *vertices, struct nk_buffer *elements, const struct nk_convert_config *config) { nk_flags res = NK_CONVERT_SUCCESS; const struct nk_command *cmd; NK_ASSERT(ctx); NK_ASSERT(cmds); NK_ASSERT(vertices); NK_ASSERT(elements); NK_ASSERT(config); NK_ASSERT(config->vertex_layout); NK_ASSERT(config->vertex_size); if (!ctx || !cmds || !vertices || !elements || !config || !config->vertex_layout) return NK_CONVERT_INVALID_PARAM; nk_draw_list_setup(&ctx->draw_list, config, cmds, vertices, elements, config->line_AA, config->shape_AA); nk_foreach(cmd, ctx) { #ifdef NK_INCLUDE_COMMAND_USERDATA ctx->draw_list.userdata = cmd->userdata; #endif switch (cmd->type) { case NK_COMMAND_NOP: break; case NK_COMMAND_SCISSOR: { const struct nk_command_scissor *s = (const struct nk_command_scissor*)cmd; nk_draw_list_add_clip(&ctx->draw_list, nk_rect(s->x, s->y, s->w, s->h)); } break; case NK_COMMAND_LINE: { const struct nk_command_line *l = (const struct nk_command_line*)cmd; nk_draw_list_stroke_line(&ctx->draw_list, nk_vec2(l->begin.x, l->begin.y), nk_vec2(l->end.x, l->end.y), l->color, l->line_thickness); } break; case NK_COMMAND_CURVE: { const struct nk_command_curve *q = (const struct nk_command_curve*)cmd; nk_draw_list_stroke_curve(&ctx->draw_list, nk_vec2(q->begin.x, q->begin.y), nk_vec2(q->ctrl[0].x, q->ctrl[0].y), nk_vec2(q->ctrl[1].x, q->ctrl[1].y), nk_vec2(q->end.x, q->end.y), q->color, config->curve_segment_count, q->line_thickness); } break; case NK_COMMAND_RECT: { const struct nk_command_rect *r = (const struct nk_command_rect*)cmd; nk_draw_list_stroke_rect(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->color, (float)r->rounding, r->line_thickness); } break; case NK_COMMAND_RECT_FILLED: { const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled*)cmd; nk_draw_list_fill_rect(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->color, (float)r->rounding); } break; case NK_COMMAND_RECT_MULTI_COLOR: { const struct nk_command_rect_multi_color *r = (const struct nk_command_rect_multi_color*)cmd; nk_draw_list_fill_rect_multi_color(&ctx->draw_list, nk_rect(r->x, r->y, r->w, r->h), r->left, r->top, r->right, r->bottom); } break; case NK_COMMAND_CIRCLE: { const struct nk_command_circle *c = (const struct nk_command_circle*)cmd; nk_draw_list_stroke_circle(&ctx->draw_list, nk_vec2((float)c->x + (float)c->w/2, (float)c->y + (float)c->h/2), (float)c->w/2, c->color, config->circle_segment_count, c->line_thickness); } break; case NK_COMMAND_CIRCLE_FILLED: { const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; nk_draw_list_fill_circle(&ctx->draw_list, nk_vec2((float)c->x + (float)c->w/2, (float)c->y + (float)c->h/2), (float)c->w/2, c->color, config->circle_segment_count); } break; case NK_COMMAND_ARC: { const struct nk_command_arc *c = (const struct nk_command_arc*)cmd; nk_draw_list_path_line_to(&ctx->draw_list, nk_vec2(c->cx, c->cy)); nk_draw_list_path_arc_to(&ctx->draw_list, nk_vec2(c->cx, c->cy), c->r, c->a[0], c->a[1], config->arc_segment_count); nk_draw_list_path_stroke(&ctx->draw_list, c->color, NK_STROKE_CLOSED, c->line_thickness); } break; case NK_COMMAND_ARC_FILLED: { const struct nk_command_arc_filled *c = (const struct nk_command_arc_filled*)cmd; nk_draw_list_path_line_to(&ctx->draw_list, nk_vec2(c->cx, c->cy)); nk_draw_list_path_arc_to(&ctx->draw_list, nk_vec2(c->cx, c->cy), c->r, c->a[0], c->a[1], config->arc_segment_count); nk_draw_list_path_fill(&ctx->draw_list, c->color); } break; case NK_COMMAND_TRIANGLE: { const struct nk_command_triangle *t = (const struct nk_command_triangle*)cmd; nk_draw_list_stroke_triangle(&ctx->draw_list, nk_vec2(t->a.x, t->a.y), nk_vec2(t->b.x, t->b.y), nk_vec2(t->c.x, t->c.y), t->color, t->line_thickness); } break; case NK_COMMAND_TRIANGLE_FILLED: { const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled*)cmd; nk_draw_list_fill_triangle(&ctx->draw_list, nk_vec2(t->a.x, t->a.y), nk_vec2(t->b.x, t->b.y), nk_vec2(t->c.x, t->c.y), t->color); } break; case NK_COMMAND_POLYGON: { int i; const struct nk_command_polygon*p = (const struct nk_command_polygon*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_stroke(&ctx->draw_list, p->color, NK_STROKE_CLOSED, p->line_thickness); } break; case NK_COMMAND_POLYGON_FILLED: { int i; const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_fill(&ctx->draw_list, p->color); } break; case NK_COMMAND_POLYLINE: { int i; const struct nk_command_polyline *p = (const struct nk_command_polyline*)cmd; for (i = 0; i < p->point_count; ++i) { struct nk_vec2 pnt = nk_vec2((float)p->points[i].x, (float)p->points[i].y); nk_draw_list_path_line_to(&ctx->draw_list, pnt); } nk_draw_list_path_stroke(&ctx->draw_list, p->color, NK_STROKE_OPEN, p->line_thickness); } break; case NK_COMMAND_TEXT: { const struct nk_command_text *t = (const struct nk_command_text*)cmd; nk_draw_list_add_text(&ctx->draw_list, t->font, nk_rect(t->x, t->y, t->w, t->h), t->string, t->length, t->height, t->foreground); } break; case NK_COMMAND_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image*)cmd; nk_draw_list_add_image(&ctx->draw_list, i->img, nk_rect(i->x, i->y, i->w, i->h), i->col); } break; case NK_COMMAND_CUSTOM: { const struct nk_command_custom *c = (const struct nk_command_custom*)cmd; c->callback(&ctx->draw_list, c->x, c->y, c->w, c->h, c->callback_data); } break; default: break; } } res |= (cmds->needed > cmds->allocated + (cmds->memory.size - cmds->size)) ? NK_CONVERT_COMMAND_BUFFER_FULL: 0; res |= (vertices->needed > vertices->allocated) ? NK_CONVERT_VERTEX_BUFFER_FULL: 0; res |= (elements->needed > elements->allocated) ? NK_CONVERT_ELEMENT_BUFFER_FULL: 0; return res; } NK_API const struct nk_draw_command* nk__draw_begin(const struct nk_context *ctx, const struct nk_buffer *buffer) { return nk__draw_list_begin(&ctx->draw_list, buffer); } NK_API const struct nk_draw_command* nk__draw_end(const struct nk_context *ctx, const struct nk_buffer *buffer) { return nk__draw_list_end(&ctx->draw_list, buffer); } NK_API const struct nk_draw_command* nk__draw_next(const struct nk_draw_command *cmd, const struct nk_buffer *buffer, const struct nk_context *ctx) { return nk__draw_list_next(cmd, buffer, &ctx->draw_list); } #endif ================================================ FILE: src/nuklear_widget.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * WIDGET * * ===============================================================*/ NK_API struct nk_rect nk_widget_bounds(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); nk_layout_peek(&bounds, ctx); return bounds; } NK_API struct nk_vec2 nk_widget_position(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); nk_layout_peek(&bounds, ctx); return nk_vec2(bounds.x, bounds.y); } NK_API struct nk_vec2 nk_widget_size(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); nk_layout_peek(&bounds, ctx); return nk_vec2(bounds.w, bounds.h); } NK_API float nk_widget_width(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; nk_layout_peek(&bounds, ctx); return bounds.w; } NK_API float nk_widget_height(struct nk_context *ctx) { struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; nk_layout_peek(&bounds, ctx); return bounds.h; } NK_API int nk_widget_is_hovered(struct nk_context *ctx) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_is_mouse_hovering_rect(&ctx->input, bounds); } NK_API int nk_widget_is_mouse_clicked(struct nk_context *ctx, enum nk_buttons btn) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_mouse_clicked(&ctx->input, btn, bounds); } NK_API int nk_widget_has_mouse_click_down(struct nk_context *ctx, enum nk_buttons btn, int down) { struct nk_rect c, v; struct nk_rect bounds; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current || ctx->active != ctx->current) return 0; c = ctx->current->layout->clip; c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_layout_peek(&bounds, ctx); nk_unify(&v, &c, bounds.x, bounds.y, bounds.x + bounds.w, bounds.y + bounds.h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds.x, bounds.y, bounds.w, bounds.h)) return 0; return nk_input_has_mouse_click_down_in_rect(&ctx->input, btn, bounds, down); } NK_API enum nk_widget_layout_states nk_widget(struct nk_rect *bounds, const struct nk_context *ctx) { struct nk_rect c, v; struct nk_window *win; struct nk_panel *layout; const struct nk_input *in; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return NK_WIDGET_INVALID; /* allocate space and check if the widget needs to be updated and drawn */ nk_panel_alloc_space(bounds, ctx); win = ctx->current; layout = win->layout; in = &ctx->input; c = layout->clip; /* if one of these triggers you forgot to add an `if` condition around either a window, group, popup, combobox or contextual menu `begin` and `end` block. Example: if (nk_begin(...) {...} nk_end(...); or if (nk_group_begin(...) { nk_group_end(...);} */ NK_ASSERT(!(layout->flags & NK_WINDOW_MINIMIZED)); NK_ASSERT(!(layout->flags & NK_WINDOW_HIDDEN)); NK_ASSERT(!(layout->flags & NK_WINDOW_CLOSED)); /* need to convert to int here to remove floating point errors */ bounds->x = (float)((int)bounds->x); bounds->y = (float)((int)bounds->y); bounds->w = (float)((int)bounds->w); bounds->h = (float)((int)bounds->h); c.x = (float)((int)c.x); c.y = (float)((int)c.y); c.w = (float)((int)c.w); c.h = (float)((int)c.h); nk_unify(&v, &c, bounds->x, bounds->y, bounds->x + bounds->w, bounds->y + bounds->h); if (!NK_INTERSECT(c.x, c.y, c.w, c.h, bounds->x, bounds->y, bounds->w, bounds->h)) return NK_WIDGET_INVALID; if (!NK_INBOX(in->mouse.pos.x, in->mouse.pos.y, v.x, v.y, v.w, v.h)) return NK_WIDGET_ROM; return NK_WIDGET_VALID; } NK_API enum nk_widget_layout_states nk_widget_fitting(struct nk_rect *bounds, struct nk_context *ctx, struct nk_vec2 item_padding) { /* update the bounds to stand without padding */ struct nk_window *win; struct nk_style *style; struct nk_panel *layout; enum nk_widget_layout_states state; struct nk_vec2 panel_padding; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return NK_WIDGET_INVALID; win = ctx->current; style = &ctx->style; layout = win->layout; state = nk_widget(bounds, ctx); panel_padding = nk_panel_get_padding(style, layout->type); if (layout->row.index == 1) { bounds->w += panel_padding.x; bounds->x -= panel_padding.x; } else bounds->x -= item_padding.x; if (layout->row.index == layout->row.columns) bounds->w += panel_padding.x; else bounds->w += item_padding.x; return state; } NK_API void nk_spacing(struct nk_context *ctx, int cols) { struct nk_window *win; struct nk_panel *layout; struct nk_rect none; int i, index, rows; NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current || !ctx->current->layout) return; /* spacing over row boundaries */ win = ctx->current; layout = win->layout; index = (layout->row.index + cols) % layout->row.columns; rows = (layout->row.index + cols) / layout->row.columns; if (rows) { for (i = 0; i < rows; ++i) nk_panel_alloc_row(ctx, win); cols = index; } /* non table layout need to allocate space */ if (layout->row.type != NK_LAYOUT_DYNAMIC_FIXED && layout->row.type != NK_LAYOUT_STATIC_FIXED) { for (i = 0; i < cols; ++i) nk_panel_alloc_space(&none, ctx); } layout->row.index = index; } ================================================ FILE: src/nuklear_window.c ================================================ #include "nuklear.h" #include "nuklear_internal.h" /* =============================================================== * * WINDOW * * ===============================================================*/ NK_LIB void* nk_create_window(struct nk_context *ctx) { struct nk_page_element *elem; elem = nk_create_page_element(ctx); if (!elem) return 0; elem->data.win.seq = ctx->seq; return &elem->data.win; } NK_LIB void nk_free_window(struct nk_context *ctx, struct nk_window *win) { /* unlink windows from list */ struct nk_table *it = win->tables; if (win->popup.win) { nk_free_window(ctx, win->popup.win); win->popup.win = 0; } win->next = 0; win->prev = 0; while (it) { /*free window state tables */ struct nk_table *n = it->next; nk_remove_table(win, it); nk_free_table(ctx, it); if (it == win->tables) win->tables = n; it = n; } /* link windows into freelist */ {union nk_page_data *pd = NK_CONTAINER_OF(win, union nk_page_data, win); struct nk_page_element *pe = NK_CONTAINER_OF(pd, struct nk_page_element, data); nk_free_page_element(ctx, pe);} } NK_LIB struct nk_window* nk_find_window(struct nk_context *ctx, nk_hash hash, const char *name) { struct nk_window *iter; iter = ctx->begin; while (iter) { NK_ASSERT(iter != iter->next); if (iter->name == hash) { int max_len = nk_strlen(iter->name_string); if (!nk_stricmpn(iter->name_string, name, max_len)) return iter; } iter = iter->next; } return 0; } NK_LIB void nk_insert_window(struct nk_context *ctx, struct nk_window *win, enum nk_window_insert_location loc) { const struct nk_window *iter; NK_ASSERT(ctx); NK_ASSERT(win); if (!win || !ctx) return; iter = ctx->begin; while (iter) { NK_ASSERT(iter != iter->next); NK_ASSERT(iter != win); if (iter == win) return; iter = iter->next; } if (!ctx->begin) { win->next = 0; win->prev = 0; ctx->begin = win; ctx->end = win; ctx->count = 1; return; } if (loc == NK_INSERT_BACK) { struct nk_window *end; end = ctx->end; end->flags |= NK_WINDOW_ROM; end->next = win; win->prev = ctx->end; win->next = 0; ctx->end = win; ctx->active = ctx->end; ctx->end->flags &= ~(nk_flags)NK_WINDOW_ROM; } else { /*ctx->end->flags |= NK_WINDOW_ROM;*/ ctx->begin->prev = win; win->next = ctx->begin; win->prev = 0; ctx->begin = win; ctx->begin->flags &= ~(nk_flags)NK_WINDOW_ROM; } ctx->count++; } NK_LIB void nk_remove_window(struct nk_context *ctx, struct nk_window *win) { if (win == ctx->begin || win == ctx->end) { if (win == ctx->begin) { ctx->begin = win->next; if (win->next) win->next->prev = 0; } if (win == ctx->end) { ctx->end = win->prev; if (win->prev) win->prev->next = 0; } } else { if (win->next) win->next->prev = win->prev; if (win->prev) win->prev->next = win->next; } if (win == ctx->active || !ctx->active) { ctx->active = ctx->end; if (ctx->end) ctx->end->flags &= ~(nk_flags)NK_WINDOW_ROM; } win->next = 0; win->prev = 0; ctx->count--; } NK_API int nk_begin(struct nk_context *ctx, const char *title, struct nk_rect bounds, nk_flags flags) { return nk_begin_titled(ctx, title, title, bounds, flags); } NK_API int nk_begin_titled(struct nk_context *ctx, const char *name, const char *title, struct nk_rect bounds, nk_flags flags) { struct nk_window *win; struct nk_style *style; nk_hash name_hash; int name_len; int ret = 0; NK_ASSERT(ctx); NK_ASSERT(name); NK_ASSERT(title); NK_ASSERT(ctx->style.font && ctx->style.font->width && "if this triggers you forgot to add a font"); NK_ASSERT(!ctx->current && "if this triggers you missed a `nk_end` call"); if (!ctx || ctx->current || !title || !name) return 0; /* find or create window */ style = &ctx->style; name_len = (int)nk_strlen(name); name_hash = nk_murmur_hash(name, (int)name_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, name_hash, name); if (!win) { /* create new window */ nk_size name_length = (nk_size)name_len; win = (struct nk_window*)nk_create_window(ctx); NK_ASSERT(win); if (!win) return 0; if (flags & NK_WINDOW_BACKGROUND) nk_insert_window(ctx, win, NK_INSERT_FRONT); else nk_insert_window(ctx, win, NK_INSERT_BACK); nk_command_buffer_init(&win->buffer, &ctx->memory, NK_CLIPPING_ON); win->flags = flags; win->bounds = bounds; win->name = name_hash; name_length = NK_MIN(name_length, NK_WINDOW_MAX_NAME-1); NK_MEMCPY(win->name_string, name, name_length); win->name_string[name_length] = 0; win->popup.win = 0; if (!ctx->active) ctx->active = win; } else { /* update window */ win->flags &= ~(nk_flags)(NK_WINDOW_PRIVATE-1); win->flags |= flags; if (!(win->flags & (NK_WINDOW_MOVABLE | NK_WINDOW_SCALABLE))) win->bounds = bounds; /* If this assert triggers you either: * * I.) Have more than one window with the same name or * II.) You forgot to actually draw the window. * More specific you did not call `nk_clear` (nk_clear will be * automatically called for you if you are using one of the * provided demo backends). */ NK_ASSERT(win->seq != ctx->seq); win->seq = ctx->seq; if (!ctx->active && !(win->flags & NK_WINDOW_HIDDEN)) { ctx->active = win; ctx->end = win; } } if (win->flags & NK_WINDOW_HIDDEN) { ctx->current = win; win->layout = 0; return 0; } else nk_start(ctx, win); /* window overlapping */ if (!(win->flags & NK_WINDOW_HIDDEN) && !(win->flags & NK_WINDOW_NO_INPUT)) { int inpanel, ishovered; struct nk_window *iter = win; float h = ctx->style.font->height + 2.0f * style->window.header.padding.y + (2.0f * style->window.header.label_padding.y); struct nk_rect win_bounds = (!(win->flags & NK_WINDOW_MINIMIZED))? win->bounds: nk_rect(win->bounds.x, win->bounds.y, win->bounds.w, h); /* activate window if hovered and no other window is overlapping this window */ inpanel = nk_input_has_mouse_click_down_in_rect(&ctx->input, NK_BUTTON_LEFT, win_bounds, nk_true); inpanel = inpanel && ctx->input.mouse.buttons[NK_BUTTON_LEFT].clicked; ishovered = nk_input_is_mouse_hovering_rect(&ctx->input, win_bounds); if ((win != ctx->active) && ishovered && !ctx->input.mouse.buttons[NK_BUTTON_LEFT].down) { iter = win->next; while (iter) { struct nk_rect iter_bounds = (!(iter->flags & NK_WINDOW_MINIMIZED))? iter->bounds: nk_rect(iter->bounds.x, iter->bounds.y, iter->bounds.w, h); if (NK_INTERSECT(win_bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter_bounds.x, iter_bounds.y, iter_bounds.w, iter_bounds.h) && (!(iter->flags & NK_WINDOW_HIDDEN))) break; if (iter->popup.win && iter->popup.active && !(iter->flags & NK_WINDOW_HIDDEN) && NK_INTERSECT(win->bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter->popup.win->bounds.x, iter->popup.win->bounds.y, iter->popup.win->bounds.w, iter->popup.win->bounds.h)) break; iter = iter->next; } } /* activate window if clicked */ if (iter && inpanel && (win != ctx->end)) { iter = win->next; while (iter) { /* try to find a panel with higher priority in the same position */ struct nk_rect iter_bounds = (!(iter->flags & NK_WINDOW_MINIMIZED))? iter->bounds: nk_rect(iter->bounds.x, iter->bounds.y, iter->bounds.w, h); if (NK_INBOX(ctx->input.mouse.pos.x, ctx->input.mouse.pos.y, iter_bounds.x, iter_bounds.y, iter_bounds.w, iter_bounds.h) && !(iter->flags & NK_WINDOW_HIDDEN)) break; if (iter->popup.win && iter->popup.active && !(iter->flags & NK_WINDOW_HIDDEN) && NK_INTERSECT(win_bounds.x, win_bounds.y, win_bounds.w, win_bounds.h, iter->popup.win->bounds.x, iter->popup.win->bounds.y, iter->popup.win->bounds.w, iter->popup.win->bounds.h)) break; iter = iter->next; } } if (iter && !(win->flags & NK_WINDOW_ROM) && (win->flags & NK_WINDOW_BACKGROUND)) { win->flags |= (nk_flags)NK_WINDOW_ROM; iter->flags &= ~(nk_flags)NK_WINDOW_ROM; ctx->active = iter; if (!(iter->flags & NK_WINDOW_BACKGROUND)) { /* current window is active in that position so transfer to top * at the highest priority in stack */ nk_remove_window(ctx, iter); nk_insert_window(ctx, iter, NK_INSERT_BACK); } } else { if (!iter && ctx->end != win) { if (!(win->flags & NK_WINDOW_BACKGROUND)) { /* current window is active in that position so transfer to top * at the highest priority in stack */ nk_remove_window(ctx, win); nk_insert_window(ctx, win, NK_INSERT_BACK); } win->flags &= ~(nk_flags)NK_WINDOW_ROM; ctx->active = win; } if (ctx->end != win && !(win->flags & NK_WINDOW_BACKGROUND)) win->flags |= NK_WINDOW_ROM; } } win->layout = (struct nk_panel*)nk_create_panel(ctx); ctx->current = win; ret = nk_panel_begin(ctx, title, NK_PANEL_WINDOW); win->layout->offset_x = &win->scrollbar.x; win->layout->offset_y = &win->scrollbar.y; return ret; } NK_API void nk_end(struct nk_context *ctx) { struct nk_panel *layout; NK_ASSERT(ctx); NK_ASSERT(ctx->current && "if this triggers you forgot to call `nk_begin`"); if (!ctx || !ctx->current) return; layout = ctx->current->layout; if (!layout || (layout->type == NK_PANEL_WINDOW && (ctx->current->flags & NK_WINDOW_HIDDEN))) { ctx->current = 0; return; } nk_panel_end(ctx); nk_free_panel(ctx, ctx->current->layout); ctx->current = 0; } NK_API struct nk_rect nk_window_get_bounds(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); return ctx->current->bounds; } NK_API struct nk_vec2 nk_window_get_position(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->bounds.x, ctx->current->bounds.y); } NK_API struct nk_vec2 nk_window_get_size(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->bounds.w, ctx->current->bounds.h); } NK_API float nk_window_get_width(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->bounds.w; } NK_API float nk_window_get_height(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->bounds.h; } NK_API struct nk_rect nk_window_get_content_region(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return nk_rect(0,0,0,0); return ctx->current->layout->clip; } NK_API struct nk_vec2 nk_window_get_content_region_min(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.x, ctx->current->layout->clip.y); } NK_API struct nk_vec2 nk_window_get_content_region_max(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.x + ctx->current->layout->clip.w, ctx->current->layout->clip.y + ctx->current->layout->clip.h); } NK_API struct nk_vec2 nk_window_get_content_region_size(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return nk_vec2(0,0); return nk_vec2(ctx->current->layout->clip.w, ctx->current->layout->clip.h); } NK_API struct nk_command_buffer* nk_window_get_canvas(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return 0; return &ctx->current->buffer; } NK_API struct nk_panel* nk_window_get_panel(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; return ctx->current->layout; } NK_API void nk_window_get_scroll(struct nk_context *ctx, nk_uint *offset_x, nk_uint *offset_y) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return ; win = ctx->current; if (offset_x) *offset_x = win->scrollbar.x; if (offset_y) *offset_y = win->scrollbar.y; } NK_API int nk_window_has_focus(const struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); NK_ASSERT(ctx->current->layout); if (!ctx || !ctx->current) return 0; return ctx->current == ctx->active; } NK_API int nk_window_is_hovered(struct nk_context *ctx) { NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return 0; if(ctx->current->flags & NK_WINDOW_HIDDEN) return 0; return nk_input_is_mouse_hovering_rect(&ctx->input, ctx->current->bounds); } NK_API int nk_window_is_any_hovered(struct nk_context *ctx) { struct nk_window *iter; NK_ASSERT(ctx); if (!ctx) return 0; iter = ctx->begin; while (iter) { /* check if window is being hovered */ if(!(iter->flags & NK_WINDOW_HIDDEN)) { /* check if window popup is being hovered */ if (iter->popup.active && iter->popup.win && nk_input_is_mouse_hovering_rect(&ctx->input, iter->popup.win->bounds)) return 1; if (iter->flags & NK_WINDOW_MINIMIZED) { struct nk_rect header = iter->bounds; header.h = ctx->style.font->height + 2 * ctx->style.window.header.padding.y; if (nk_input_is_mouse_hovering_rect(&ctx->input, header)) return 1; } else if (nk_input_is_mouse_hovering_rect(&ctx->input, iter->bounds)) { return 1; } } iter = iter->next; } return 0; } NK_API int nk_item_is_any_active(struct nk_context *ctx) { int any_hovered = nk_window_is_any_hovered(ctx); int any_active = (ctx->last_widget_state & NK_WIDGET_STATE_MODIFIED); return any_hovered || any_active; } NK_API int nk_window_is_collapsed(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 0; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 0; return win->flags & NK_WINDOW_MINIMIZED; } NK_API int nk_window_is_closed(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 1; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 1; return (win->flags & NK_WINDOW_CLOSED); } NK_API int nk_window_is_hidden(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 1; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 1; return (win->flags & NK_WINDOW_HIDDEN); } NK_API int nk_window_is_active(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return 0; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return 0; return win == ctx->active; } NK_API struct nk_window* nk_window_find(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); return nk_find_window(ctx, title_hash, name); } NK_API void nk_window_close(struct nk_context *ctx, const char *name) { struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; win = nk_window_find(ctx, name); if (!win) return; NK_ASSERT(ctx->current != win && "You cannot close a currently active window"); if (ctx->current == win) return; win->flags |= NK_WINDOW_HIDDEN; win->flags |= NK_WINDOW_CLOSED; } NK_API void nk_window_set_bounds(struct nk_context *ctx, const char *name, struct nk_rect bounds) { struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; win = nk_window_find(ctx, name); if (!win) return; NK_ASSERT(ctx->current != win && "You cannot update a currently in procecss window"); win->bounds = bounds; } NK_API void nk_window_set_position(struct nk_context *ctx, const char *name, struct nk_vec2 pos) { struct nk_window *win = nk_window_find(ctx, name); if (!win) return; win->bounds.x = pos.x; win->bounds.y = pos.y; } NK_API void nk_window_set_size(struct nk_context *ctx, const char *name, struct nk_vec2 size) { struct nk_window *win = nk_window_find(ctx, name); if (!win) return; win->bounds.w = size.x; win->bounds.h = size.y; } NK_API void nk_window_set_scroll(struct nk_context *ctx, nk_uint offset_x, nk_uint offset_y) { struct nk_window *win; NK_ASSERT(ctx); NK_ASSERT(ctx->current); if (!ctx || !ctx->current) return; win = ctx->current; win->scrollbar.x = offset_x; win->scrollbar.y = offset_y; } NK_API void nk_window_collapse(struct nk_context *ctx, const char *name, enum nk_collapse_states c) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return; if (c == NK_MINIMIZED) win->flags |= NK_WINDOW_MINIMIZED; else win->flags &= ~(nk_flags)NK_WINDOW_MINIMIZED; } NK_API void nk_window_collapse_if(struct nk_context *ctx, const char *name, enum nk_collapse_states c, int cond) { NK_ASSERT(ctx); if (!ctx || !cond) return; nk_window_collapse(ctx, name, c); } NK_API void nk_window_show(struct nk_context *ctx, const char *name, enum nk_show_states s) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (!win) return; if (s == NK_HIDDEN) { win->flags |= NK_WINDOW_HIDDEN; } else win->flags &= ~(nk_flags)NK_WINDOW_HIDDEN; } NK_API void nk_window_show_if(struct nk_context *ctx, const char *name, enum nk_show_states s, int cond) { NK_ASSERT(ctx); if (!ctx || !cond) return; nk_window_show(ctx, name, s); } NK_API void nk_window_set_focus(struct nk_context *ctx, const char *name) { int title_len; nk_hash title_hash; struct nk_window *win; NK_ASSERT(ctx); if (!ctx) return; title_len = (int)nk_strlen(name); title_hash = nk_murmur_hash(name, (int)title_len, NK_WINDOW_TITLE); win = nk_find_window(ctx, title_hash, name); if (win && ctx->end != win) { nk_remove_window(ctx, win); nk_insert_window(ctx, win, NK_INSERT_BACK); } ctx->active = win; } ================================================ FILE: src/paq.sh ================================================ #!/bin/sh python build.py --macro NK --intro HEADER --pub nuklear.h --priv nuklear_internal.h,nuklear_math.c,nuklear_util.c,nuklear_color.c,nuklear_utf8.c,nuklear_buffer.c,nuklear_string.c,nuklear_draw.c,nuklear_vertex.c,nuklear_font.c,nuklear_input.c,nuklear_style.c,nuklear_context.c,nuklear_pool.c,nuklear_page_element.c,nuklear_table.c,nuklear_panel.c,nuklear_window.c,nuklear_popup.c,nuklear_contextual.c,nuklear_menu.c,nuklear_layout.c,nuklear_tree.c,nuklear_group.c,nuklear_list_view.c,nuklear_widget.c,nuklear_text.c,nuklear_image.c,nuklear_button.c,nuklear_toggle.c,nuklear_selectable.c,nuklear_slider.c,nuklear_progress.c,nuklear_scrollbar.c,nuklear_text_editor.c,nuklear_edit.c,nuklear_property.c,nuklear_chart.c,nuklear_color_picker.c,nuklear_combo.c,nuklear_tooltip.c --outro LICENSE,CHANGELOG,CREDITS