Repository: omwteam/html2canvas
Branch: master
Commit: 9b94e05546b9
Files: 4
Total size: 163.1 KB
Directory structure:
gitextract_b39mv3ny/
├── README.md
├── demo.html
└── static/
└── js/
├── canvas2image.js
└── html2canvas.js
================================================
FILE CONTENTS
================================================
================================================
FILE: README.md
================================================
**html2canvas html截图插件图片放大清晰度解决方案，支持任意放大倍数，解决原插件图片偏移问题**
----------------------------------------------------
Author: Alias You (2016.12.6)
插件下载地址：https://github.com/niklasvh/html2canvas
1.首先引入html2canvas.js html2canvas 0.5.0-beta4 最新版即可
必要步骤1：修改插件的源码： （修改的地方有两处）
#### 1. 代码第 999 行 renderWindow 的方法中 修改判断条件 增加一个options.scale存在的条件：
源码：
```
if (options.type === "view") {
canvas = crop(renderer.canvas, {width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0});
} else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement || options.canvas != null) {
canvas = renderer.canvas;
} else {
canvas = crop(renderer.canvas, {width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 0, y: 0});
}
```
改为：
```
if (options.type === "view") {
canvas = crop(renderer.canvas, {width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0});
} else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement) {
canvas = renderer.canvas;
}else if(options.scale && options.canvas !=null){
log("放大canvas",options.canvas);
var scale = options.scale || 1;
canvas = crop(renderer.canvas, {width: bounds.width * scale, height:bounds.height * scale, top: bounds.top *scale, left: bounds.left *scale, x: 0, y: 0});
}
else {
canvas = crop(renderer.canvas, {width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 0, y: 0});
}
```
#### 2. 代码第 943 行 html2canvas 的方法中 修改width,height：
源码：
```
return renderDocument(node.ownerDocument, options, node.ownerDocument.defaultView.innerWidth, node.ownerDocument.defaultView.innerHeight, index).then(function(canvas) {
if (typeof(options.onrendered) === "function") {
log("options.onrendered is deprecated, html2canvas returns a Promise containing the canvas");
options.onrendered(canvas);
}
return canvas;
});
```
改为：
```
width = options.width != null ? options.width : node.ownerDocument.defaultView.innerWidth;
height = options.height != null ? options.height : node.ownerDocument.defaultView.innerHeight;
return renderDocument(node.ownerDocument, options, width, height, index).then(function(canvas) {
if (typeof(options.onrendered) === "function") {
log("options.onrendered is deprecated, html2canvas returns a Promise containing the canvas");
options.onrendered(canvas);
}
return canvas;
});
```
2.使用方式
```
var shareContent = document.getElementById("shareContent");//需要截图的包裹的（原生的）DOM 对象
var width = shareContent.offsetWidth; //获取dom 宽度
var height = shareContent.offsetHeight; //获取dom 高度
var canvas = document.createElement("canvas"); //创建一个canvas节点
var scale = 2; //定义任意放大倍数 支持小数
canvas.width = width * scale; //定义canvas 宽度 * 缩放
canvas.height = height * scale; //定义canvas高度 *缩放
canvas.getContext("2d").scale(scale,scale); //获取context,设置scale
var opts = {
scale:scale, // 添加的scale 参数
canvas:canvas, //自定义 canvas
logging: true, //日志开关
width:width, //dom 原始宽度
height:height //dom 原始高度
};
html2canvas(shareContent, opts).then(function (canvas) {
//如果想要生成图片 引入canvas2Image.js 下载地址：
//https://github.com/hongru/canvas2image/blob/master/canvas2image.js
var img = Canvas2Image.convertToImage(canvas, canvas.width, canvas.height);
console.log(img);
});
```
**2017.1.7 优化插件使用的方式，并附上demo （插件的改动还是按照上面的操作流程）**
-------------------------------------------------
（修复插件的使用方式上存在截图不完整的bug）
以下我总结了一些注意事项，在代码中注释了，仅供参考。
付：完整使用的demo ,如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<title>html2Canvas demo</title>
<script>
document.documentElement.style.fontSize = window.screen.width / 7.5 + 'px';
</script>
<style>
body,
html,
div,
p,
ul,
li,
a,
img,
span,
button,
header,
footer,
section {
padding: 0;
margin: 0;
}
*, :before, :after {
-webkit-tap-highlight-color: transparent;
-webkit-user-select: none;
outline: none;
box-sizing: border-box;
-webkit-box-sizing: border-box;
}
::-webkit-scrollbar {
width: 0;
opacity: 0;
}
button{
font-family: simsun,"microsoft yahei", arial, "Helvetica Neue", Helvetica, STHeiTi, sans-serif;
}
body {
font-family: "microsoft yahei", arial, "Helvetica Neue", Helvetica, STHeiTi, sans-serif;
color: #000;
background-color: #f5f5f5;
-webkit-overflow-scrolling: touch;
}
.share-container {
padding-top: 0.72rem;
width: 2.35rem;
margin: 0 auto;
}
.share-content {
padding-top: 0.72rem;
height:3rem;
background-color: blue;
border-radius: 5px;
width: 100%;
}
.text{
font-size: 0.36rem;
color: #f2f2f2;
}
.btn-share {
width: 64%;
height: 0.89rem;
background-color: #3baaff;
border-radius: 0.89rem;
border: 1px solid #3baaff;
color: white;
font-size: 0.36rem;
margin: 0.75rem 0 0.67rem;
}
.btn-share:active{
background-color: #1b96c8;
}
</style>
</head>
<body>
<section class="main-container">
<header class="share-container" id="shareContainer">
<div class="share-content" id="shareContent">
<div class="text">
<p>文字，图片等内容</p>
</div>
</div>
</header>
<footer class="footer-center">
<button class="btn-share" id="btnShare">截 图</button>
</footer>
</section>
<script src="static/js/html2canvas.js"></script>
<script>
//定义查找元素方法
function $(selector) {
return document.querySelector(selector);
}
var main = {
init:function(){
main.setListener();
},
//设置监听事件
setListener:function(){
var btnShare = document.getElementById("btnShare");
btnShare.onclick = function(){
main.html2Canvas();
}
},
//获取像素密度
getPixelRatio:function(context){
var backingStore = context.backingStorePixelRatio ||
context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
return (window.devicePixelRatio || 1) / backingStore;
},
//绘制dom 元素，生成截图canvas
html2Canvas: function () {
var shareContent = $("#shareContent");// 需要绘制的部分的 (原生）dom 对象 ，注意容器的宽度不要使用百分比，使用固定宽度，避免缩放问题
var width = shareContent.offsetWidth; // 获取(原生）dom 宽度
var height = shareContent.offsetHeight; // 获取(原生）dom 高
var offsetTop = shareContent.offsetTop; //元素距离顶部的偏移量
var canvas = document.createElement('canvas'); //创建canvas 对象
var context = canvas.getContext('2d');
var scaleBy = main.getPixelRatio(context); //获取像素密度的方法 (也可以采用自定义缩放比例)
canvas.width = width * scaleBy; //这里 由于绘制的dom 为固定宽度，居中，所以没有偏移
canvas.height = (height + offsetTop) * scaleBy; // 注意高度问题，由于顶部有个距离所以要加上顶部的距离，解决图像高度偏移问题
context.scale(scaleBy, scaleBy);
var opts = {
allowTaint:true,//允许加载跨域的图片
tainttest:true, //检测每张图片都已经加载完成
scale:scaleBy, // 添加的scale 参数
canvas:canvas, //自定义 canvas
logging: true, //日志开关，发布的时候记得改成false
width:width, //dom 原始宽度
height:height //dom 原始高度
};
html2canvas(shareContent, opts).then(function (canvas) {
console.log("html2canvas");
var body = document.getElementsByTagName("body");
body[0].appendChild(canvas);
});
}
};
//最后运行代码
main.init();
</script>
</body>
</html>
## 运行上面的demo 前有以下 **注意点**：
1. 前面的内容没看过,没下载过html2canvas.js 没按照插件改过说明操作的先改好再说
2. 注意元素的样式的使用：
外层元素width 不能使用百分比 ,避免导致图片与文字间缩放比例问题
错误使用方式如
.container {
width:50%;
margin: 0 auto;
}
需要改成如：
.container {
width:300px;
margin: 0 auto;
}
有疑问请在下方留言，可以在群里讨论和交流 QQ群：172270493，欢迎加入哦
================================================
FILE: demo.html
================================================
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<title>html2Canvas demo</title>
<script>
document.documentElement.style.fontSize = window.screen.width / 7.5 + 'px';
</script>
<style>
body,
html,
div,
p,
ul,
li,
a,
img,
span,
button,
header,
footer,
section {
padding: 0;
margin: 0;
}
*, :before, :after {
-webkit-tap-highlight-color: transparent;
-webkit-user-select: none;
outline: none;
box-sizing: border-box;
-webkit-box-sizing: border-box;
}
::-webkit-scrollbar {
width: 0;
opacity: 0;
}
button{
font-family: simsun,"microsoft yahei", arial, "Helvetica Neue", Helvetica, STHeiTi, sans-serif;
}
body {
font-family: "microsoft yahei", arial, "Helvetica Neue", Helvetica, STHeiTi, sans-serif;
color: #000;
background-color: #f5f5f5;
-webkit-overflow-scrolling: touch;
}
.share-container {
padding-top: 0.72rem;
width: 2.35rem;
margin: 0 auto;
}
.share-content {
padding-top: 0.72rem;
height:3rem;
background-color: blue;
border-radius: 5px;
width: 100%;
}
.text{
font-size: 0.36rem;
color: #f2f2f2;
}
.btn-share {
width: 64%;
height: 0.89rem;
background-color: #3baaff;
border-radius: 0.89rem;
border: 1px solid #3baaff;
color: white;
font-size: 0.36rem;
margin: 0.75rem 0 0.67rem;
}
.btn-share:active{
background-color: #1b96c8;
}
</style>
</head>
<body>
<section class="main-container">
<header class="share-container" id="shareContainer">
<div class="share-content" id="shareContent">
<div class="text">
<p>文字，图片等内容</p>
</div>
</div>
</header>
<footer class="footer-center">
<button class="btn-share" id="btnShare">截 图</button>
</footer>
</section>
<script src="static/js/html2canvas.js"></script>
<script>
//定义查找元素方法
function $(selector) {
return document.querySelector(selector);
}
var main = {
init:function(){
main.setListener();
},
//设置监听事件
setListener:function(){
var btnShare = document.getElementById("btnShare");
btnShare.onclick = function(){
main.html2Canvas();
}
},
//获取像素密度
getPixelRatio:function(context){
var backingStore = context.backingStorePixelRatio ||
context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
return (window.devicePixelRatio || 1) / backingStore;
},
//绘制dom 元素，生成截图canvas
html2Canvas: function () {
var shareContent = $("#shareContent");// 需要绘制的部分的 (原生）dom 对象 ，注意容器的宽度不要使用百分比，使用固定宽度，避免缩放问题
var width = shareContent.offsetWidth; // 获取(原生）dom 宽度
var height = shareContent.offsetHeight; // 获取(原生）dom 高
var offsetTop = shareContent.offsetTop; //元素距离顶部的偏移量
var canvas = document.createElement('canvas'); //创建canvas 对象
var context = canvas.getContext('2d');
var scaleBy = main.getPixelRatio(context); //获取像素密度的方法 (也可以采用自定义缩放比例)
canvas.width = width * scaleBy; //这里 由于绘制的dom 为固定宽度，居中，所以没有偏移
canvas.height = (height + offsetTop) * scaleBy; // 注意高度问题，由于顶部有个距离所以要加上顶部的距离，解决图像高度偏移问题
context.scale(scaleBy, scaleBy);
var opts = {
allowTaint:true,//允许加载跨域的图片
tainttest:true, //检测每张图片都已经加载完成
scale:scaleBy, // 添加的scale 参数
canvas:canvas, //自定义 canvas
logging: true, //日志开关，发布的时候记得改成false
width:width, //dom 原始宽度
height:height //dom 原始高度
};
html2canvas(shareContent, opts).then(function (canvas) {
console.log("html2canvas");
var body = document.getElementsByTagName("body");
body[0].appendChild(canvas);
});
}
};
//最后运行代码
main.init();
</script>
</body>
</html>
================================================
FILE: static/js/canvas2image.js
================================================
/**
* covert canvas to image
* and save the image file
*/
var Canvas2Image = function () {
// check if support sth.
var $support = function () {
var canvas = document.createElement('canvas'),
ctx = canvas.getContext('2d');
return {
canvas: !!ctx,
imageData: !!ctx.getImageData,
dataURL: !!canvas.toDataURL,
btoa: !!window.btoa
};
}();
var downloadMime = 'image/octet-stream';
function scaleCanvas (canvas, width, height) {
var w = canvas.width,
h = canvas.height;
if (width == undefined) {
width = w;
}
if (height == undefined) {
height = h;
}
var retCanvas = document.createElement('canvas');
var retCtx = retCanvas.getContext('2d');
retCanvas.width = width;
retCanvas.height = height;
retCtx.drawImage(canvas, 0, 0, w, h, 0, 0, width, height);
return retCanvas;
}
function getDataURL (canvas, type, width, height) {
canvas = scaleCanvas(canvas, width, height);
return canvas.toDataURL(type);
}
function saveFile (strData) {
document.location.href = strData;
}
function genImage(strData) {
var img = document.createElement('img');
img.src = strData;
return img;
}
function fixType (type) {
type = type.toLowerCase().replace(/jpg/i, 'jpeg');
var r = type.match(/png|jpeg|bmp|gif/)[0];
return 'image/' + r;
}
function encodeData (data) {
if (!window.btoa) { throw 'btoa undefined' }
var str = '';
if (typeof data == 'string') {
str = data;
} else {
for (var i = 0; i < data.length; i ++) {
str += String.fromCharCode(data[i]);
}
}
return btoa(str);
}
function getImageData (canvas) {
var w = canvas.width,
h = canvas.height;
return canvas.getContext('2d').getImageData(0, 0, w, h);
}
function makeURI (strData, type) {
return 'data:' + type + ';base64,' + strData;
}
/**
* create bitmap image
* 按照规则生成图片响应头和响应体
*/
var genBitmapImage = function (oData) {
//
// BITMAPFILEHEADER: http://msdn.microsoft.com/en-us/library/windows/desktop/dd183374(v=vs.85).aspx
// BITMAPINFOHEADER: http://msdn.microsoft.com/en-us/library/dd183376.aspx
//
var biWidth = oData.width;
var biHeight = oData.height;
var biSizeImage = biWidth * biHeight * 3;
var bfSize = biSizeImage + 54; // total header size = 54 bytes
//
// typedef struct tagBITMAPFILEHEADER {
// WORD bfType;
// DWORD bfSize;
// WORD bfReserved1;
// WORD bfReserved2;
// DWORD bfOffBits;
// } BITMAPFILEHEADER;
//
var BITMAPFILEHEADER = [
// WORD bfType -- The file type signature; must be "BM"
0x42, 0x4D,
// DWORD bfSize -- The size, in bytes, of the bitmap file
bfSize & 0xff, bfSize >> 8 & 0xff, bfSize >> 16 & 0xff, bfSize >> 24 & 0xff,
// WORD bfReserved1 -- Reserved; must be zero
0, 0,
// WORD bfReserved2 -- Reserved; must be zero
0, 0,
// DWORD bfOffBits -- The offset, in bytes, from the beginning of the BITMAPFILEHEADER structure to the bitmap bits.
54, 0, 0, 0
];
//
// typedef struct tagBITMAPINFOHEADER {
// DWORD biSize;
// LONG biWidth;
// LONG biHeight;
// WORD biPlanes;
// WORD biBitCount;
// DWORD biCompression;
// DWORD biSizeImage;
// LONG biXPelsPerMeter;
// LONG biYPelsPerMeter;
// DWORD biClrUsed;
// DWORD biClrImportant;
// } BITMAPINFOHEADER, *PBITMAPINFOHEADER;
//
var BITMAPINFOHEADER = [
// DWORD biSize -- The number of bytes required by the structure
40, 0, 0, 0,
// LONG biWidth -- The width of the bitmap, in pixels
biWidth & 0xff, biWidth >> 8 & 0xff, biWidth >> 16 & 0xff, biWidth >> 24 & 0xff,
// LONG biHeight -- The height of the bitmap, in pixels
biHeight & 0xff, biHeight >> 8 & 0xff, biHeight >> 16 & 0xff, biHeight >> 24 & 0xff,
// WORD biPlanes -- The number of planes for the target device. This value must be set to 1
1, 0,
// WORD biBitCount -- The number of bits-per-pixel, 24 bits-per-pixel -- the bitmap
// has a maximum of 2^24 colors (16777216, Truecolor)
24, 0,
// DWORD biCompression -- The type of compression, BI_RGB (code 0) -- uncompressed
0, 0, 0, 0,
// DWORD biSizeImage -- The size, in bytes, of the image. This may be set to zero for BI_RGB bitmaps
biSizeImage & 0xff, biSizeImage >> 8 & 0xff, biSizeImage >> 16 & 0xff, biSizeImage >> 24 & 0xff,
// LONG biXPelsPerMeter, unused
0,0,0,0,
// LONG biYPelsPerMeter, unused
0,0,0,0,
// DWORD biClrUsed, the number of color indexes of palette, unused
0,0,0,0,
// DWORD biClrImportant, unused
0,0,0,0
];
var iPadding = (4 - ((biWidth * 3) % 4)) % 4;
var aImgData = oData.data;
var strPixelData = '';
var biWidth4 = biWidth<<2;
var y = biHeight;
var fromCharCode = String.fromCharCode;
do {
var iOffsetY = biWidth4*(y-1);
var strPixelRow = '';
for (var x = 0; x < biWidth; x++) {
var iOffsetX = x<<2;
strPixelRow += fromCharCode(aImgData[iOffsetY+iOffsetX+2]) +
fromCharCode(aImgData[iOffsetY+iOffsetX+1]) +
fromCharCode(aImgData[iOffsetY+iOffsetX]);
}
for (var c = 0; c < iPadding; c++) {
strPixelRow += String.fromCharCode(0);
}
strPixelData += strPixelRow;
} while (--y);
var strEncoded = encodeData(BITMAPFILEHEADER.concat(BITMAPINFOHEADER)) + encodeData(strPixelData);
return strEncoded;
};
/**
* saveAsImage
* @param canvasElement
* @param {String} image type
* @param {Number} [optional] png width
* @param {Number} [optional] png height
*/
var saveAsImage = function (canvas, width, height, type) {
if ($support.canvas && $support.dataURL) {
if (typeof canvas == "string") { canvas = document.getElementById(canvas); }
if (type == undefined) { type = 'png'; }
type = fixType(type);
if (/bmp/.test(type)) {
var data = getImageData(scaleCanvas(canvas, width, height));
var strData = genBitmapImage(data);
saveFile(makeURI(strData, downloadMime));
} else {
var strData = getDataURL(canvas, type, width, height);
saveFile(strData.replace(type, downloadMime));
}
}
};
var getBase64Data = function(canvas, width, height, type){
if ($support.canvas && $support.dataURL) {
if (typeof canvas == "string") { canvas = document.getElementById(canvas); }
if (type == undefined) { type = 'png'; }
type = fixType(type);
var strData;
if (/bmp/.test(type)) {
var data = getImageData(scaleCanvas(canvas, width, height));
strData= genBitmapImage(data);
} else {
strData = getDataURL(canvas, type, width, height);
}
var base64;
var dataArray = strData.split("base64,");
if(dataArray && dataArray.length > 1){
base64 = dataArray[1];
}
return base64;
}
};
var convertToImage = function (canvas, width, height, type) {
if ($support.canvas && $support.dataURL) {
if (typeof canvas == "string") { canvas = document.getElementById(canvas); }
if (type == undefined) { type = 'png'; }
type = fixType(type);
if (/bmp/.test(type)) {
var data = getImageData(scaleCanvas(canvas, width, height));
var strData = genBitmapImage(data);
return genImage(makeURI(strData, 'image/bmp'));
} else {
var strData = getDataURL(canvas, type, width, height);
return genImage(strData);
}
}
};
return {
getBase64Data:getBase64Data,
saveAsImage: saveAsImage,
saveAsPNG: function (canvas, width, height) {
return saveAsImage(canvas, width, height, 'png');
},
saveAsJPEG: function (canvas, width, height) {
return saveAsImage(canvas, width, height, 'jpeg');
},
saveAsGIF: function (canvas, width, height) {
return saveAsImage(canvas, width, height, 'gif');
},
saveAsBMP: function (canvas, width, height) {
return saveAsImage(canvas, width, height, 'bmp');
},
convertToImage: convertToImage,
convertToPNG: function (canvas, width, height) {
return convertToImage(canvas, width, height, 'png');
},
convertToJPEG: function (canvas, width, height) {
return convertToImage(canvas, width, height, 'jpeg');
},
convertToGIF: function (canvas, width, height) {
return convertToImage(canvas, width, height, 'gif');
},
convertToBMP: function (canvas, width, height) {
return convertToImage(canvas, width, height, 'bmp');
}
};
}();
================================================
FILE: static/js/html2canvas.js
================================================
/*
html2canvas 0.5.0-beta3 <http://html2canvas.hertzen.com>
Copyright (c) 2016 Niklas von Hertzen
Released under License
*/
!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.html2canvas=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
(function (global){
/*! http://mths.be/punycode v1.2.4 by @mathias */
;(function(root) {
/** Detect free variables */
var freeExports = typeof exports == 'object' && exports;
var freeModule = typeof module == 'object' && module &&
module.exports == freeExports && module;
var freeGlobal = typeof global == 'object' && global;
if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
root = freeGlobal;
}
/**
* The `punycode` object.
* @name punycode
* @type Object
*/
var punycode,
/** Highest positive signed 32-bit float value */
maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1
/** Bootstring parameters */
base = 36,
tMin = 1,
tMax = 26,
skew = 38,
damp = 700,
initialBias = 72,
initialN = 128, // 0x80
delimiter = '-', // '\x2D'
/** Regular expressions */
regexPunycode = /^xn--/,
regexNonASCII = /[^ -~]/, // unprintable ASCII chars + non-ASCII chars
regexSeparators = /\x2E|\u3002|\uFF0E|\uFF61/g, // RFC 3490 separators
/** Error messages */
errors = {
'overflow': 'Overflow: input needs wider integers to process',
'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
'invalid-input': 'Invalid input'
},
/** Convenience shortcuts */
baseMinusTMin = base - tMin,
floor = Math.floor,
stringFromCharCode = String.fromCharCode,
/** Temporary variable */
key;
/*--------------------------------------------------------------------------*/
/**
* A generic error utility function.
* @private
* @param {String} type The error type.
* @returns {Error} Throws a `RangeError` with the applicable error message.
*/
function error(type) {
throw RangeError(errors[type]);
}
/**
* A generic `Array#map` utility function.
* @private
* @param {Array} array The array to iterate over.
* @param {Function} callback The function that gets called for every array
* item.
* @returns {Array} A new array of values returned by the callback function.
*/
function map(array, fn) {
var length = array.length;
while (length--) {
array[length] = fn(array[length]);
}
return array;
}
/**
* A simple `Array#map`-like wrapper to work with domain name strings.
* @private
* @param {String} domain The domain name.
* @param {Function} callback The function that gets called for every
* character.
* @returns {Array} A new string of characters returned by the callback
* function.
*/
function mapDomain(string, fn) {
return map(string.split(regexSeparators), fn).join('.');
}
/**
* Creates an array containing the numeric code points of each Unicode
* character in the string. While JavaScript uses UCS-2 internally,
* this function will convert a pair of surrogate halves (each of which
* UCS-2 exposes as separate characters) into a single code point,
* matching UTF-16.
* @see `punycode.ucs2.encode`
* @see <http://mathiasbynens.be/notes/javascript-encoding>
* @memberOf punycode.ucs2
* @name decode
* @param {String} string The Unicode input string (UCS-2).
* @returns {Array} The new array of code points.
*/
function ucs2decode(string) {
var output = [],
counter = 0,
length = string.length,
value,
extra;
while (counter < length) {
value = string.charCodeAt(counter++);
if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
// high surrogate, and there is a next character
extra = string.charCodeAt(counter++);
if ((extra & 0xFC00) == 0xDC00) { // low surrogate
output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
} else {
// unmatched surrogate; only append this code unit, in case the next
// code unit is the high surrogate of a surrogate pair
output.push(value);
counter--;
}
} else {
output.push(value);
}
}
return output;
}
/**
* Creates a string based on an array of numeric code points.
* @see `punycode.ucs2.decode`
* @memberOf punycode.ucs2
* @name encode
* @param {Array} codePoints The array of numeric code points.
* @returns {String} The new Unicode string (UCS-2).
*/
function ucs2encode(array) {
return map(array, function(value) {
var output = '';
if (value > 0xFFFF) {
value -= 0x10000;
output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
value = 0xDC00 | value & 0x3FF;
}
output += stringFromCharCode(value);
return output;
}).join('');
}
/**
* Converts a basic code point into a digit/integer.
* @see `digitToBasic()`
* @private
* @param {Number} codePoint The basic numeric code point value.
* @returns {Number} The numeric value of a basic code point (for use in
* representing integers) in the range `0` to `base - 1`, or `base` if
* the code point does not represent a value.
*/
function basicToDigit(codePoint) {
if (codePoint - 48 < 10) {
return codePoint - 22;
}
if (codePoint - 65 < 26) {
return codePoint - 65;
}
if (codePoint - 97 < 26) {
return codePoint - 97;
}
return base;
}
/**
* Converts a digit/integer into a basic code point.
* @see `basicToDigit()`
* @private
* @param {Number} digit The numeric value of a basic code point.
* @returns {Number} The basic code point whose value (when used for
* representing integers) is `digit`, which needs to be in the range
* `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
* used; else, the lowercase form is used. The behavior is undefined
* if `flag` is non-zero and `digit` has no uppercase form.
*/
function digitToBasic(digit, flag) {
// 0..25 map to ASCII a..z or A..Z
// 26..35 map to ASCII 0..9
return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
}
/**
* Bias adaptation function as per section 3.4 of RFC 3492.
* http://tools.ietf.org/html/rfc3492#section-3.4
* @private
*/
function adapt(delta, numPoints, firstTime) {
var k = 0;
delta = firstTime ? floor(delta / damp) : delta >> 1;
delta += floor(delta / numPoints);
for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
delta = floor(delta / baseMinusTMin);
}
return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
}
/**
* Converts a Punycode string of ASCII-only symbols to a string of Unicode
* symbols.
* @memberOf punycode
* @param {String} input The Punycode string of ASCII-only symbols.
* @returns {String} The resulting string of Unicode symbols.
*/
function decode(input) {
// Don't use UCS-2
var output = [],
inputLength = input.length,
out,
i = 0,
n = initialN,
bias = initialBias,
basic,
j,
index,
oldi,
w,
k,
digit,
t,
/** Cached calculation results */
baseMinusT;
// Handle the basic code points: let `basic` be the number of input code
// points before the last delimiter, or `0` if there is none, then copy
// the first basic code points to the output.
basic = input.lastIndexOf(delimiter);
if (basic < 0) {
basic = 0;
}
for (j = 0; j < basic; ++j) {
// if it's not a basic code point
if (input.charCodeAt(j) >= 0x80) {
error('not-basic');
}
output.push(input.charCodeAt(j));
}
// Main decoding loop: start just after the last delimiter if any basic code
// points were copied; start at the beginning otherwise.
for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {
// `index` is the index of the next character to be consumed.
// Decode a generalized variable-length integer into `delta`,
// which gets added to `i`. The overflow checking is easier
// if we increase `i` as we go, then subtract off its starting
// value at the end to obtain `delta`.
for (oldi = i, w = 1, k = base; /* no condition */; k += base) {
if (index >= inputLength) {
error('invalid-input');
}
digit = basicToDigit(input.charCodeAt(index++));
if (digit >= base || digit > floor((maxInt - i) / w)) {
error('overflow');
}
i += digit * w;
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (digit < t) {
break;
}
baseMinusT = base - t;
if (w > floor(maxInt / baseMinusT)) {
error('overflow');
}
w *= baseMinusT;
}
out = output.length + 1;
bias = adapt(i - oldi, out, oldi == 0);
// `i` was supposed to wrap around from `out` to `0`,
// incrementing `n` each time, so we'll fix that now:
if (floor(i / out) > maxInt - n) {
error('overflow');
}
n += floor(i / out);
i %= out;
// Insert `n` at position `i` of the output
output.splice(i++, 0, n);
}
return ucs2encode(output);
}
/**
* Converts a string of Unicode symbols to a Punycode string of ASCII-only
* symbols.
* @memberOf punycode
* @param {String} input The string of Unicode symbols.
* @returns {String} The resulting Punycode string of ASCII-only symbols.
*/
function encode(input) {
var n,
delta,
handledCPCount,
basicLength,
bias,
j,
m,
q,
k,
t,
currentValue,
output = [],
/** `inputLength` will hold the number of code points in `input`. */
inputLength,
/** Cached calculation results */
handledCPCountPlusOne,
baseMinusT,
qMinusT;
// Convert the input in UCS-2 to Unicode
input = ucs2decode(input);
// Cache the length
inputLength = input.length;
// Initialize the state
n = initialN;
delta = 0;
bias = initialBias;
// Handle the basic code points
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < 0x80) {
output.push(stringFromCharCode(currentValue));
}
}
handledCPCount = basicLength = output.length;
// `handledCPCount` is the number of code points that have been handled;
// `basicLength` is the number of basic code points.
// Finish the basic string - if it is not empty - with a delimiter
if (basicLength) {
output.push(delimiter);
}
// Main encoding loop:
while (handledCPCount < inputLength) {
// All non-basic code points < n have been handled already. Find the next
// larger one:
for (m = maxInt, j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue >= n && currentValue < m) {
m = currentValue;
}
}
// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
// but guard against overflow
handledCPCountPlusOne = handledCPCount + 1;
if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
error('overflow');
}
delta += (m - n) * handledCPCountPlusOne;
n = m;
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < n && ++delta > maxInt) {
error('overflow');
}
if (currentValue == n) {
// Represent delta as a generalized variable-length integer
for (q = delta, k = base; /* no condition */; k += base) {
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (q < t) {
break;
}
qMinusT = q - t;
baseMinusT = base - t;
output.push(
stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
);
q = floor(qMinusT / baseMinusT);
}
output.push(stringFromCharCode(digitToBasic(q, 0)));
bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
delta = 0;
++handledCPCount;
}
}
++delta;
++n;
}
return output.join('');
}
/**
* Converts a Punycode string representing a domain name to Unicode. Only the
* Punycoded parts of the domain name will be converted, i.e. it doesn't
* matter if you call it on a string that has already been converted to
* Unicode.
* @memberOf punycode
* @param {String} domain The Punycode domain name to convert to Unicode.
* @returns {String} The Unicode representation of the given Punycode
* string.
*/
function toUnicode(domain) {
return mapDomain(domain, function(string) {
return regexPunycode.test(string)
? decode(string.slice(4).toLowerCase())
: string;
});
}
/**
* Converts a Unicode string representing a domain name to Punycode. Only the
* non-ASCII parts of the domain name will be converted, i.e. it doesn't
* matter if you call it with a domain that's already in ASCII.
* @memberOf punycode
* @param {String} domain The domain name to convert, as a Unicode string.
* @returns {String} The Punycode representation of the given domain name.
*/
function toASCII(domain) {
return mapDomain(domain, function(string) {
return regexNonASCII.test(string)
? 'xn--' + encode(string)
: string;
});
}
/*--------------------------------------------------------------------------*/
/** Define the public API */
punycode = {
/**
* A string representing the current Punycode.js version number.
* @memberOf punycode
* @type String
*/
'version': '1.2.4',
/**
* An object of methods to convert from JavaScript's internal character
* representation (UCS-2) to Unicode code points, and back.
* @see <http://mathiasbynens.be/notes/javascript-encoding>
* @memberOf punycode
* @type Object
*/
'ucs2': {
'decode': ucs2decode,
'encode': ucs2encode
},
'decode': decode,
'encode': encode,
'toASCII': toASCII,
'toUnicode': toUnicode
};
/** Expose `punycode` */
// Some AMD build optimizers, like r.js, check for specific condition patterns
// like the following:
if (
typeof define == 'function' &&
typeof define.amd == 'object' &&
define.amd
) {
define('punycode', function() {
return punycode;
});
} else if (freeExports && !freeExports.nodeType) {
if (freeModule) { // in Node.js or RingoJS v0.8.0+
freeModule.exports = punycode;
} else { // in Narwhal or RingoJS v0.7.0-
for (key in punycode) {
punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
}
}
} else { // in Rhino or a web browser
root.punycode = punycode;
}
}(this));
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],2:[function(_dereq_,module,exports){
var log = _dereq_('./log');
function restoreOwnerScroll(ownerDocument, x, y) {
if (ownerDocument.defaultView && (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) {
ownerDocument.defaultView.scrollTo(x, y);
}
}
function cloneCanvasContents(canvas, clonedCanvas) {
try {
if (clonedCanvas) {
clonedCanvas.width = canvas.width;
clonedCanvas.height = canvas.height;
clonedCanvas.getContext("2d").putImageData(canvas.getContext("2d").getImageData(0, 0, canvas.width, canvas.height), 0, 0);
}
} catch(e) {
log("Unable to copy canvas content from", canvas, e);
}
}
function cloneNode(node, javascriptEnabled) {
var clone = node.nodeType === 3 ? document.createTextNode(node.nodeValue) : node.cloneNode(false);
var child = node.firstChild;
while(child) {
if (javascriptEnabled === true || child.nodeType !== 1 || child.nodeName !== 'SCRIPT') {
clone.appendChild(cloneNode(child, javascriptEnabled));
}
child = child.nextSibling;
}
if (node.nodeType === 1) {
clone._scrollTop = node.scrollTop;
clone._scrollLeft = node.scrollLeft;
if (node.nodeName === "CANVAS") {
cloneCanvasContents(node, clone);
} else if (node.nodeName === "TEXTAREA" || node.nodeName === "SELECT") {
clone.value = node.value;
}
}
return clone;
}
function initNode(node) {
if (node.nodeType === 1) {
node.scrollTop = node._scrollTop;
node.scrollLeft = node._scrollLeft;
var child = node.firstChild;
while(child) {
initNode(child);
child = child.nextSibling;
}
}
}
module.exports = function(ownerDocument, containerDocument, width, height, options, x ,y) {
var documentElement = cloneNode(ownerDocument.documentElement, options.javascriptEnabled);
var container = containerDocument.createElement("iframe");
container.className = "html2canvas-container";
container.style.visibility = "hidden";
container.style.position = "fixed";
container.style.left = "-10000px";
container.style.top = "0px";
container.style.border = "0";
container.width = width;
container.height = height;
container.scrolling = "no"; // ios won't scroll without it
containerDocument.body.appendChild(container);
return new Promise(function(resolve) {
var documentClone = container.contentWindow.document;
/* Chrome doesn't detect relative background-images assigned in inline <style> sheets when fetched through getComputedStyle
if window url is about:blank, we can assign the url to current by writing onto the document
*/
container.contentWindow.onload = container.onload = function() {
var interval = setInterval(function() {
if (documentClone.body.childNodes.length > 0) {
initNode(documentClone.documentElement);
clearInterval(interval);
if (options.type === "view") {
container.contentWindow.scrollTo(x, y);
if ((/(iPad|iPhone|iPod)/g).test(navigator.userAgent) && (container.contentWindow.scrollY !== y || container.contentWindow.scrollX !== x)) {
documentClone.documentElement.style.top = (-y) + "px";
documentClone.documentElement.style.left = (-x) + "px";
documentClone.documentElement.style.position = 'absolute';
}
}
resolve(container);
}
}, 50);
};
documentClone.open();
documentClone.write("<!DOCTYPE html><html></html>");
// Chrome scrolls the parent document for some reason after the write to the cloned window???
restoreOwnerScroll(ownerDocument, x, y);
documentClone.replaceChild(documentClone.adoptNode(documentElement), documentClone.documentElement);
documentClone.close();
});
};
},{"./log":13}],3:[function(_dereq_,module,exports){
// http://dev.w3.org/csswg/css-color/
function Color(value) {
this.r = 0;
this.g = 0;
this.b = 0;
this.a = null;
var result = this.fromArray(value) ||
this.namedColor(value) ||
this.rgb(value) ||
this.rgba(value) ||
this.hex6(value) ||
this.hex3(value);
}
Color.prototype.darken = function(amount) {
var a = 1 - amount;
return new Color([
Math.round(this.r * a),
Math.round(this.g * a),
Math.round(this.b * a),
this.a
]);
};
Color.prototype.isTransparent = function() {
return this.a === 0;
};
Color.prototype.isBlack = function() {
return this.r === 0 && this.g === 0 && this.b === 0;
};
Color.prototype.fromArray = function(array) {
if (Array.isArray(array)) {
this.r = Math.min(array[0], 255);
this.g = Math.min(array[1], 255);
this.b = Math.min(array[2], 255);
if (array.length > 3) {
this.a = array[3];
}
}
return (Array.isArray(array));
};
var _hex3 = /^#([a-f0-9]{3})$/i;
Color.prototype.hex3 = function(value) {
var match = null;
if ((match = value.match(_hex3)) !== null) {
this.r = parseInt(match[1][0] + match[1][0], 16);
this.g = parseInt(match[1][1] + match[1][1], 16);
this.b = parseInt(match[1][2] + match[1][2], 16);
}
return match !== null;
};
var _hex6 = /^#([a-f0-9]{6})$/i;
Color.prototype.hex6 = function(value) {
var match = null;
if ((match = value.match(_hex6)) !== null) {
this.r = parseInt(match[1].substring(0, 2), 16);
this.g = parseInt(match[1].substring(2, 4), 16);
this.b = parseInt(match[1].substring(4, 6), 16);
}
return match !== null;
};
var _rgb = /^rgb\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)$/;
Color.prototype.rgb = function(value) {
var match = null;
if ((match = value.match(_rgb)) !== null) {
this.r = Number(match[1]);
this.g = Number(match[2]);
this.b = Number(match[3]);
}
return match !== null;
};
var _rgba = /^rgba\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d?\.?\d+)\s*\)$/;
Color.prototype.rgba = function(value) {
var match = null;
if ((match = value.match(_rgba)) !== null) {
this.r = Number(match[1]);
this.g = Number(match[2]);
this.b = Number(match[3]);
this.a = Number(match[4]);
}
return match !== null;
};
Color.prototype.toString = function() {
return this.a !== null && this.a !== 1 ?
"rgba(" + [this.r, this.g, this.b, this.a].join(",") + ")" :
"rgb(" + [this.r, this.g, this.b].join(",") + ")";
};
Color.prototype.namedColor = function(value) {
value = value.toLowerCase();
var color = colors[value];
if (color) {
this.r = color[0];
this.g = color[1];
this.b = color[2];
} else if (value === "transparent") {
this.r = this.g = this.b = this.a = 0;
return true;
}
return !!color;
};
Color.prototype.isColor = true;
// JSON.stringify([].slice.call($$('.named-color-table tr'), 1).map(function(row) { return [row.childNodes[3].textContent, row.childNodes[5].textContent.trim().split(",").map(Number)] }).reduce(function(data, row) {data[row[0]] = row[1]; return data}, {}))
var colors = {
"aliceblue": [240, 248, 255],
"antiquewhite": [250, 235, 215],
"aqua": [0, 255, 255],
"aquamarine": [127, 255, 212],
"azure": [240, 255, 255],
"beige": [245, 245, 220],
"bisque": [255, 228, 196],
"black": [0, 0, 0],
"blanchedalmond": [255, 235, 205],
"blue": [0, 0, 255],
"blueviolet": [138, 43, 226],
"brown": [165, 42, 42],
"burlywood": [222, 184, 135],
"cadetblue": [95, 158, 160],
"chartreuse": [127, 255, 0],
"chocolate": [210, 105, 30],
"coral": [255, 127, 80],
"cornflowerblue": [100, 149, 237],
"cornsilk": [255, 248, 220],
"crimson": [220, 20, 60],
"cyan": [0, 255, 255],
"darkblue": [0, 0, 139],
"darkcyan": [0, 139, 139],
"darkgoldenrod": [184, 134, 11],
"darkgray": [169, 169, 169],
"darkgreen": [0, 100, 0],
"darkgrey": [169, 169, 169],
"darkkhaki": [189, 183, 107],
"darkmagenta": [139, 0, 139],
"darkolivegreen": [85, 107, 47],
"darkorange": [255, 140, 0],
"darkorchid": [153, 50, 204],
"darkred": [139, 0, 0],
"darksalmon": [233, 150, 122],
"darkseagreen": [143, 188, 143],
"darkslateblue": [72, 61, 139],
"darkslategray": [47, 79, 79],
"darkslategrey": [47, 79, 79],
"darkturquoise": [0, 206, 209],
"darkviolet": [148, 0, 211],
"deeppink": [255, 20, 147],
"deepskyblue": [0, 191, 255],
"dimgray": [105, 105, 105],
"dimgrey": [105, 105, 105],
"dodgerblue": [30, 144, 255],
"firebrick": [178, 34, 34],
"floralwhite": [255, 250, 240],
"forestgreen": [34, 139, 34],
"fuchsia": [255, 0, 255],
"gainsboro": [220, 220, 220],
"ghostwhite": [248, 248, 255],
"gold": [255, 215, 0],
"goldenrod": [218, 165, 32],
"gray": [128, 128, 128],
"green": [0, 128, 0],
"greenyellow": [173, 255, 47],
"grey": [128, 128, 128],
"honeydew": [240, 255, 240],
"hotpink": [255, 105, 180],
"indianred": [205, 92, 92],
"indigo": [75, 0, 130],
"ivory": [255, 255, 240],
"khaki": [240, 230, 140],
"lavender": [230, 230, 250],
"lavenderblush": [255, 240, 245],
"lawngreen": [124, 252, 0],
"lemonchiffon": [255, 250, 205],
"lightblue": [173, 216, 230],
"lightcoral": [240, 128, 128],
"lightcyan": [224, 255, 255],
"lightgoldenrodyellow": [250, 250, 210],
"lightgray": [211, 211, 211],
"lightgreen": [144, 238, 144],
"lightgrey": [211, 211, 211],
"lightpink": [255, 182, 193],
"lightsalmon": [255, 160, 122],
"lightseagreen": [32, 178, 170],
"lightskyblue": [135, 206, 250],
"lightslategray": [119, 136, 153],
"lightslategrey": [119, 136, 153],
"lightsteelblue": [176, 196, 222],
"lightyellow": [255, 255, 224],
"lime": [0, 255, 0],
"limegreen": [50, 205, 50],
"linen": [250, 240, 230],
"magenta": [255, 0, 255],
"maroon": [128, 0, 0],
"mediumaquamarine": [102, 205, 170],
"mediumblue": [0, 0, 205],
"mediumorchid": [186, 85, 211],
"mediumpurple": [147, 112, 219],
"mediumseagreen": [60, 179, 113],
"mediumslateblue": [123, 104, 238],
"mediumspringgreen": [0, 250, 154],
"mediumturquoise": [72, 209, 204],
"mediumvioletred": [199, 21, 133],
"midnightblue": [25, 25, 112],
"mintcream": [245, 255, 250],
"mistyrose": [255, 228, 225],
"moccasin": [255, 228, 181],
"navajowhite": [255, 222, 173],
"navy": [0, 0, 128],
"oldlace": [253, 245, 230],
"olive": [128, 128, 0],
"olivedrab": [107, 142, 35],
"orange": [255, 165, 0],
"orangered": [255, 69, 0],
"orchid": [218, 112, 214],
"palegoldenrod": [238, 232, 170],
"palegreen": [152, 251, 152],
"paleturquoise": [175, 238, 238],
"palevioletred": [219, 112, 147],
"papayawhip": [255, 239, 213],
"peachpuff": [255, 218, 185],
"peru": [205, 133, 63],
"pink": [255, 192, 203],
"plum": [221, 160, 221],
"powderblue": [176, 224, 230],
"purple": [128, 0, 128],
"rebeccapurple": [102, 51, 153],
"red": [255, 0, 0],
"rosybrown": [188, 143, 143],
"royalblue": [65, 105, 225],
"saddlebrown": [139, 69, 19],
"salmon": [250, 128, 114],
"sandybrown": [244, 164, 96],
"seagreen": [46, 139, 87],
"seashell": [255, 245, 238],
"sienna": [160, 82, 45],
"silver": [192, 192, 192],
"skyblue": [135, 206, 235],
"slateblue": [106, 90, 205],
"slategray": [112, 128, 144],
"slategrey": [112, 128, 144],
"snow": [255, 250, 250],
"springgreen": [0, 255, 127],
"steelblue": [70, 130, 180],
"tan": [210, 180, 140],
"teal": [0, 128, 128],
"thistle": [216, 191, 216],
"tomato": [255, 99, 71],
"turquoise": [64, 224, 208],
"violet": [238, 130, 238],
"wheat": [245, 222, 179],
"white": [255, 255, 255],
"whitesmoke": [245, 245, 245],
"yellow": [255, 255, 0],
"yellowgreen": [154, 205, 50]
};
module.exports = Color;
},{}],4:[function(_dereq_,module,exports){
var Support = _dereq_('./support');
var CanvasRenderer = _dereq_('./renderers/canvas');
var ImageLoader = _dereq_('./imageloader');
var NodeParser = _dereq_('./nodeparser');
var NodeContainer = _dereq_('./nodecontainer');
var log = _dereq_('./log');
var utils = _dereq_('./utils');
var createWindowClone = _dereq_('./clone');
var loadUrlDocument = _dereq_('./proxy').loadUrlDocument;
var getBounds = utils.getBounds;
var html2canvasNodeAttribute = "data-html2canvas-node";
var html2canvasCloneIndex = 0;
function html2canvas(nodeList, options) {
var index = html2canvasCloneIndex++;
options = options || {};
if (options.logging) {
log.options.logging = true;
log.options.start = Date.now();
}
options.async = typeof(options.async) === "undefined" ? true : options.async;
options.allowTaint = typeof(options.allowTaint) === "undefined" ? false : options.allowTaint;
options.removeContainer = typeof(options.removeContainer) === "undefined" ? true : options.removeContainer;
options.javascriptEnabled = typeof(options.javascriptEnabled) === "undefined" ? false : options.javascriptEnabled;
options.imageTimeout = typeof(options.imageTimeout) === "undefined" ? 10000 : options.imageTimeout;
options.renderer = typeof(options.renderer) === "function" ? options.renderer : CanvasRenderer;
options.strict = !!options.strict;
if (typeof(nodeList) === "string") {
if (typeof(options.proxy) !== "string") {
return Promise.reject("Proxy must be used when rendering url");
}
var width = options.width != null ? options.width : window.innerWidth;
var height = options.height != null ? options.height : window.innerHeight;
return loadUrlDocument(absoluteUrl(nodeList), options.proxy, document, width, height, options).then(function(container) {
return renderWindow(container.contentWindow.document.documentElement, container, options, width, height);
});
}
var node = ((nodeList === undefined) ? [document.documentElement] : ((nodeList.length) ? nodeList : [nodeList]))[0];
node.setAttribute(html2canvasNodeAttribute + index, index);
width = options.width != null ? options.width : node.ownerDocument.defaultView.innerWidth;
height = options.height != null ? options.height : node.ownerDocument.defaultView.innerHeight;
return renderDocument(node.ownerDocument, options, width, height, index).then(function(canvas) {
if (typeof(options.onrendered) === "function") {
log("options.onrendered is deprecated, html2canvas returns a Promise containing the canvas");
options.onrendered(canvas);
}
return canvas;
});
}
html2canvas.CanvasRenderer = CanvasRenderer;
html2canvas.NodeContainer = NodeContainer;
html2canvas.log = log;
html2canvas.utils = utils;
var html2canvasExport = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() {
return Promise.reject("No canvas support");
} : html2canvas;
module.exports = html2canvasExport;
if (typeof(define) === 'function' && define.amd) {
define('html2canvas', [], function() {
return html2canvasExport;
});
}
function renderDocument(document, options, windowWidth, windowHeight, html2canvasIndex) {
return createWindowClone(document, document, windowWidth, windowHeight, options, document.defaultView.pageXOffset, document.defaultView.pageYOffset).then(function(container) {
log("Document cloned");
var attributeName = html2canvasNodeAttribute + html2canvasIndex;
var selector = "[" + attributeName + "='" + html2canvasIndex + "']";
document.querySelector(selector).removeAttribute(attributeName);
var clonedWindow = container.contentWindow;
var node = clonedWindow.document.querySelector(selector);
var oncloneHandler = (typeof(options.onclone) === "function") ? Promise.resolve(options.onclone(clonedWindow.document)) : Promise.resolve(true);
return oncloneHandler.then(function() {
return renderWindow(node, container, options, windowWidth, windowHeight);
});
});
}
function renderWindow(node, container, options, windowWidth, windowHeight) {
var clonedWindow = container.contentWindow;
var support = new Support(clonedWindow.document);
var imageLoader = new ImageLoader(options, support);
var bounds = getBounds(node);
var width = options.type === "view" ? windowWidth : documentWidth(clonedWindow.document);
var height = options.type === "view" ? windowHeight : documentHeight(clonedWindow.document);
console.log()
var renderer = new options.renderer(width, height, imageLoader, options, node.ownerDocument);
var parser = new NodeParser(node, renderer, support, imageLoader, options);
return parser.ready.then(function() {
log("Finished rendering");
var canvas;
if (options.type === "view") {
canvas = crop(renderer.canvas, {width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0});
} else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement) {
canvas = renderer.canvas;
}else if(options.scale && options.canvas !=null){
log("放大canvas",options.canvas);
var scale = options.scale || 1;
console.log(bounds.top *scale)
canvas = crop(renderer.canvas, {width: bounds.width * scale, height:bounds.height * scale, top: bounds.top *scale, left: bounds.left *scale, x: 0, y: 0});
// console.log(canvas.width)
}else if (options.transform && options.transform.rotate ){
canvas = scaledCanvas(renderer, bounds, options.transform.rotate);
}
else {
canvas = crop(renderer.canvas, {width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 0, y: 0});
}
cleanupContainer(container, options);
return canvas;
});
}
function cleanupContainer(container, options) {
if (options.removeContainer) {
container.parentNode.removeChild(container);
log("Cleaned up container");
}
}
function crop(canvas, bounds) {
var croppedCanvas = document.createElement("canvas");
var x1 = Math.min(canvas.width - 1, Math.max(0, bounds.left));
var x2 = Math.min(canvas.width, Math.max(1, bounds.left + bounds.width));
var y1 = Math.min(canvas.height - 1, Math.max(0, bounds.top));
var y2 = Math.min(canvas.height, Math.max(1, bounds.top + bounds.height));
croppedCanvas.width = bounds.width;
croppedCanvas.height = bounds.height;
var width = x2-x1;
var height = y2-y1;
log("Cropping canvas at:", "left:", bounds.left, "top:", bounds.top, "width:", width, "height:", height);
log("Resulting crop with width", bounds.width, "and height", bounds.height, "with x", x1, "and y", y1);
croppedCanvas.getContext("2d").drawImage(canvas, x1, y1, width, height, bounds.x, bounds.y, width, height);
return croppedCanvas;
}
function documentWidth (doc) {
return Math.max(
Math.max(doc.body.scrollWidth, doc.documentElement.scrollWidth),
Math.max(doc.body.offsetWidth, doc.documentElement.offsetWidth),
Math.max(doc.body.clientWidth, doc.documentElement.clientWidth)
);
}
function documentHeight (doc) {
return Math.max(
Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight),
Math.max(doc.body.offsetHeight, doc.documentElement.offsetHeight),
Math.max(doc.body.clientHeight, doc.documentElement.clientHeight)
);
}
function absoluteUrl(url) {
var link = document.createElement("a");
link.href = url;
link.href = link.href;
return link;
}
},{"./clone":2,"./imageloader":11,"./log":13,"./nodecontainer":14,"./nodeparser":15,"./proxy":16,"./renderers/canvas":20,"./support":22,"./utils":26}],5:[function(_dereq_,module,exports){
var log = _dereq_('./log');
var smallImage = _dereq_('./utils').smallImage;
function DummyImageContainer(src) {
this.src = src;
log("DummyImageContainer for", src);
if (!this.promise || !this.image) {
log("Initiating DummyImageContainer");
DummyImageContainer.prototype.image = new Image();
var image = this.image;
DummyImageContainer.prototype.promise = new Promise(function(resolve, reject) {
image.onload = resolve;
image.onerror = reject;
image.src = smallImage();
if (image.complete === true) {
resolve(image);
}
});
}
}
module.exports = DummyImageContainer;
},{"./log":13,"./utils":26}],6:[function(_dereq_,module,exports){
var smallImage = _dereq_('./utils').smallImage;
function Font(family, size) {
var container = document.createElement('div'),
img = document.createElement('img'),
span = document.createElement('span'),
sampleText = 'Hidden Text',
baseline,
middle;
container.style.visibility = "hidden";
container.style.fontFamily = family;
container.style.fontSize = size;
container.style.margin = 0;
container.style.padding = 0;
document.body.appendChild(container);
img.src = smallImage();
img.width = 1;
img.height = 1;
img.style.margin = 0;
img.style.padding = 0;
img.style.verticalAlign = "baseline";
span.style.fontFamily = family;
span.style.fontSize = size;
span.style.margin = 0;
span.style.padding = 0;
span.appendChild(document.createTextNode(sampleText));
container.appendChild(span);
container.appendChild(img);
baseline = (img.offsetTop - span.offsetTop) + 1;
container.removeChild(span);
container.appendChild(document.createTextNode(sampleText));
container.style.lineHeight = "normal";
img.style.verticalAlign = "super";
middle = (img.offsetTop-container.offsetTop) + 1;
document.body.removeChild(container);
this.baseline = baseline;
this.lineWidth = 1;
this.middle = middle;
}
module.exports = Font;
},{"./utils":26}],7:[function(_dereq_,module,exports){
var Font = _dereq_('./font');
function FontMetrics() {
this.data = {};
}
FontMetrics.prototype.getMetrics = function(family, size) {
if (this.data[family + "-" + size] === undefined) {
this.data[family + "-" + size] = new Font(family, size);
}
return this.data[family + "-" + size];
};
module.exports = FontMetrics;
},{"./font":6}],8:[function(_dereq_,module,exports){
var utils = _dereq_('./utils');
var getBounds = utils.getBounds;
var loadUrlDocument = _dereq_('./proxy').loadUrlDocument;
function FrameContainer(container, sameOrigin, options) {
this.image = null;
this.src = container;
var self = this;
var bounds = getBounds(container);
this.promise = (!sameOrigin ? this.proxyLoad(options.proxy, bounds, options) : new Promise(function(resolve) {
if (container.contentWindow.document.URL === "about:blank" || container.contentWindow.document.documentElement == null) {
container.contentWindow.onload = container.onload = function() {
resolve(container);
};
} else {
resolve(container);
}
})).then(function(container) {
var html2canvas = _dereq_('./core');
return html2canvas(container.contentWindow.document.documentElement, {type: 'view', width: container.width, height: container.height, proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer, allowTaint: options.allowTaint, imageTimeout: options.imageTimeout / 2});
}).then(function(canvas) {
return self.image = canvas;
});
}
FrameContainer.prototype.proxyLoad = function(proxy, bounds, options) {
var container = this.src;
return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options);
};
module.exports = FrameContainer;
},{"./core":4,"./proxy":16,"./utils":26}],9:[function(_dereq_,module,exports){
function GradientContainer(imageData) {
this.src = imageData.value;
this.colorStops = [];
this.type = null;
this.x0 = 0.5;
this.y0 = 0.5;
this.x1 = 0.5;
this.y1 = 0.5;
this.promise = Promise.resolve(true);
}
GradientContainer.TYPES = {
LINEAR: 1,
RADIAL: 2
};
// TODO: support hsl[a], negative %/length values
// TODO: support <angle> (e.g. -?\d{1,3}(?:\.\d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle )
GradientContainer.REGEXP_COLORSTOP = /^\s*(rgba?\(\s*\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*[0-9\.]+)?\s*\)|[a-z]{3,20}|#[a-f0-9]{3,6})(?:\s+(\d{1,3}(?:\.\d+)?)(%|px)?)?(?:\s|$)/i;
module.exports = GradientContainer;
},{}],10:[function(_dereq_,module,exports){
function ImageContainer(src, cors) {
this.src = src;
this.image = new Image();
var self = this;
this.tainted = null;
this.promise = new Promise(function(resolve, reject) {
self.image.onload = resolve;
self.image.onerror = reject;
if (cors) {
self.image.crossOrigin = "anonymous";
}
self.image.src = src;
if (self.image.complete === true) {
resolve(self.image);
}
});
}
module.exports = ImageContainer;
},{}],11:[function(_dereq_,module,exports){
var log = _dereq_('./log');
var ImageContainer = _dereq_('./imagecontainer');
var DummyImageContainer = _dereq_('./dummyimagecontainer');
var ProxyImageContainer = _dereq_('./proxyimagecontainer');
var FrameContainer = _dereq_('./framecontainer');
var SVGContainer = _dereq_('./svgcontainer');
var SVGNodeContainer = _dereq_('./svgnodecontainer');
var LinearGradientContainer = _dereq_('./lineargradientcontainer');
var WebkitGradientContainer = _dereq_('./webkitgradientcontainer');
var bind = _dereq_('./utils').bind;
function ImageLoader(options, support) {
this.link = null;
this.options = options;
this.support = support;
this.origin = this.getOrigin(window.location.href);
}
ImageLoader.prototype.findImages = function(nodes) {
var images = [];
nodes.reduce(function(imageNodes, container) {
switch(container.node.nodeName) {
case "IMG":
return imageNodes.concat([{
args: [container.node.src],
method: "url"
}]);
case "svg":
case "IFRAME":
return imageNodes.concat([{
args: [container.node],
method: container.node.nodeName
}]);
}
return imageNodes;
}, []).forEach(this.addImage(images, this.loadImage), this);
return images;
};
ImageLoader.prototype.findBackgroundImage = function(images, container) {
container.parseBackgroundImages().filter(this.hasImageBackground).forEach(this.addImage(images, this.loadImage), this);
return images;
};
ImageLoader.prototype.addImage = function(images, callback) {
return function(newImage) {
newImage.args.forEach(function(image) {
if (!this.imageExists(images, image)) {
images.splice(0, 0, callback.call(this, newImage));
log('Added image #' + (images.length), typeof(image) === "string" ? image.substring(0, 100) : image);
}
}, this);
};
};
ImageLoader.prototype.hasImageBackground = function(imageData) {
return imageData.method !== "none";
};
ImageLoader.prototype.loadImage = function(imageData) {
if (imageData.method === "url") {
var src = imageData.args[0];
if (this.isSVG(src) && !this.support.svg && !this.options.allowTaint) {
return new SVGContainer(src);
} else if (src.match(/data:image\/.*;base64,/i)) {
return new ImageContainer(src.replace(/url\(['"]{0,}|['"]{0,}\)$/ig, ''), false);
} else if (this.isSameOrigin(src) || this.options.allowTaint === true || this.isSVG(src)) {
return new ImageContainer(src, false);
} else if (this.support.cors && !this.options.allowTaint && this.options.useCORS) {
return new ImageContainer(src, true);
} else if (this.options.proxy) {
return new ProxyImageContainer(src, this.options.proxy);
} else {
return new DummyImageContainer(src);
}
} else if (imageData.method === "linear-gradient") {
return new LinearGradientContainer(imageData);
} else if (imageData.method === "gradient") {
return new WebkitGradientContainer(imageData);
} else if (imageData.method === "svg") {
return new SVGNodeContainer(imageData.args[0], this.support.svg);
} else if (imageData.method === "IFRAME") {
return new FrameContainer(imageData.args[0], this.isSameOrigin(imageData.args[0].src), this.options);
} else {
return new DummyImageContainer(imageData);
}
};
ImageLoader.prototype.isSVG = function(src) {
return src.substring(src.length - 3).toLowerCase() === "svg" || SVGContainer.prototype.isInline(src);
};
ImageLoader.prototype.imageExists = function(images, src) {
return images.some(function(image) {
return image.src === src;
});
};
ImageLoader.prototype.isSameOrigin = function(url) {
return (this.getOrigin(url) === this.origin);
};
ImageLoader.prototype.getOrigin = function(url) {
var link = this.link || (this.link = document.createElement("a"));
link.href = url;
link.href = link.href; // IE9, LOL! - http://jsfiddle.net/niklasvh/2e48b/
return link.protocol + link.hostname + link.port;
};
ImageLoader.prototype.getPromise = function(container) {
return this.timeout(container, this.options.imageTimeout)['catch'](function() {
var dummy = new DummyImageContainer(container.src);
return dummy.promise.then(function(image) {
container.image = image;
});
});
};
ImageLoader.prototype.get = function(src) {
var found = null;
return this.images.some(function(img) {
return (found = img).src === src;
}) ? found : null;
};
ImageLoader.prototype.fetch = function(nodes) {
this.images = nodes.reduce(bind(this.findBackgroundImage, this), this.findImages(nodes));
this.images.forEach(function(image, index) {
image.promise.then(function() {
log("Succesfully loaded image #"+ (index+1), image);
}, function(e) {
log("Failed loading image #"+ (index+1), image, e);
});
});
this.ready = Promise.all(this.images.map(this.getPromise, this));
log("Finished searching images");
return this;
};
ImageLoader.prototype.timeout = function(container, timeout) {
var timer;
var promise = Promise.race([container.promise, new Promise(function(res, reject) {
timer = setTimeout(function() {
log("Timed out loading image", container);
reject(container);
}, timeout);
})]).then(function(container) {
clearTimeout(timer);
return container;
});
promise['catch'](function() {
clearTimeout(timer);
});
return promise;
};
module.exports = ImageLoader;
},{"./dummyimagecontainer":5,"./framecontainer":8,"./imagecontainer":10,"./lineargradientcontainer":12,"./log":13,"./proxyimagecontainer":17,"./svgcontainer":23,"./svgnodecontainer":24,"./utils":26,"./webkitgradientcontainer":27}],12:[function(_dereq_,module,exports){
var GradientContainer = _dereq_('./gradientcontainer');
var Color = _dereq_('./color');
function LinearGradientContainer(imageData) {
GradientContainer.apply(this, arguments);
this.type = GradientContainer.TYPES.LINEAR;
var hasDirection = LinearGradientContainer.REGEXP_DIRECTION.test( imageData.args[0] ) ||
!GradientContainer.REGEXP_COLORSTOP.test( imageData.args[0] );
if (hasDirection) {
imageData.args[0].split(/\s+/).reverse().forEach(function(position, index) {
switch(position) {
case "left":
this.x0 = 0;
this.x1 = 1;
break;
case "top":
this.y0 = 0;
this.y1 = 1;
break;
case "right":
this.x0 = 1;
this.x1 = 0;
break;
case "bottom":
this.y0 = 1;
this.y1 = 0;
break;
case "to":
var y0 = this.y0;
var x0 = this.x0;
this.y0 = this.y1;
this.x0 = this.x1;
this.x1 = x0;
this.y1 = y0;
break;
case "center":
break; // centered by default
// Firefox internally converts position keywords to percentages:
// http://www.w3.org/TR/2010/WD-CSS2-20101207/colors.html#propdef-background-position
default: // percentage or absolute length
// TODO: support absolute start point positions (e.g., use bounds to convert px to a ratio)
var ratio = parseFloat(position, 10) * 1e-2;
if (isNaN(ratio)) { // invalid or unhandled value
break;
}
if (index === 0) {
this.y0 = ratio;
this.y1 = 1 - this.y0;
} else {
this.x0 = ratio;
this.x1 = 1 - this.x0;
}
break;
}
}, this);
} else {
this.y0 = 0;
this.y1 = 1;
}
this.colorStops = imageData.args.slice(hasDirection ? 1 : 0).map(function(colorStop) {
var colorStopMatch = colorStop.match(GradientContainer.REGEXP_COLORSTOP);
var value = +colorStopMatch[2];
var unit = value === 0 ? "%" : colorStopMatch[3]; // treat "0" as "0%"
return {
color: new Color(colorStopMatch[1]),
// TODO: support absolute stop positions (e.g., compute gradient line length & convert px to ratio)
stop: unit === "%" ? value / 100 : null
};
});
if (this.colorStops[0].stop === null) {
this.colorStops[0].stop = 0;
}
if (this.colorStops[this.colorStops.length - 1].stop === null) {
this.colorStops[this.colorStops.length - 1].stop = 1;
}
// calculates and fills-in explicit stop positions when omitted from rule
this.colorStops.forEach(function(colorStop, index) {
if (colorStop.stop === null) {
this.colorStops.slice(index).some(function(find, count) {
if (find.stop !== null) {
colorStop.stop = ((find.stop - this.colorStops[index - 1].stop) / (count + 1)) + this.colorStops[index - 1].stop;
return true;
} else {
return false;
}
}, this);
}
}, this);
}
LinearGradientContainer.prototype = Object.create(GradientContainer.prototype);
// TODO: support <angle> (e.g. -?\d{1,3}(?:\.\d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle )
LinearGradientContainer.REGEXP_DIRECTION = /^\s*(?:to|left|right|top|bottom|center|\d{1,3}(?:\.\d+)?%?)(?:\s|$)/i;
module.exports = LinearGradientContainer;
},{"./color":3,"./gradientcontainer":9}],13:[function(_dereq_,module,exports){
var logger = function() {
if (logger.options.logging && window.console && window.console.log) {
Function.prototype.bind.call(window.console.log, (window.console)).apply(window.console, [(Date.now() - logger.options.start) + "ms", "html2canvas:"].concat([].slice.call(arguments, 0)));
}
};
logger.options = {logging: false};
module.exports = logger;
},{}],14:[function(_dereq_,module,exports){
var Color = _dereq_('./color');
var utils = _dereq_('./utils');
var getBounds = utils.getBounds;
var parseBackgrounds = utils.parseBackgrounds;
var offsetBounds = utils.offsetBounds;
function NodeContainer(node, parent) {
this.node = node;
this.parent = parent;
this.stack = null;
this.bounds = null;
this.borders = null;
this.clip = [];
this.backgroundClip = [];
this.offsetBounds = null;
this.visible = null;
this.computedStyles = null;
this.colors = {};
this.styles = {};
this.backgroundImages = null;
this.transformData = null;
this.transformMatrix = null;
this.isPseudoElement = false;
this.opacity = null;
}
NodeContainer.prototype.cloneTo = function(stack) {
stack.visible = this.visible;
stack.borders = this.borders;
stack.bounds = this.bounds;
stack.clip = this.clip;
stack.backgroundClip = this.backgroundClip;
stack.computedStyles = this.computedStyles;
stack.styles = this.styles;
stack.backgroundImages = this.backgroundImages;
stack.opacity = this.opacity;
};
NodeContainer.prototype.getOpacity = function() {
return this.opacity === null ? (this.opacity = this.cssFloat('opacity')) : this.opacity;
};
NodeContainer.prototype.assignStack = function(stack) {
this.stack = stack;
stack.children.push(this);
};
NodeContainer.prototype.isElementVisible = function() {
return this.node.nodeType === Node.TEXT_NODE ? this.parent.visible : (
this.css('display') !== "none" &&
this.css('visibility') !== "hidden" &&
!this.node.hasAttribute("data-html2canvas-ignore") &&
(this.node.nodeName !== "INPUT" || this.node.getAttribute("type") !== "hidden")
);
};
NodeContainer.prototype.css = function(attribute) {
if (!this.computedStyles) {
this.computedStyles = this.isPseudoElement ? this.parent.computedStyle(this.before ? ":before" : ":after") : this.computedStyle(null);
}
return this.styles[attribute] || (this.styles[attribute] = this.computedStyles[attribute]);
};
NodeContainer.prototype.prefixedCss = function(attribute) {
var prefixes = ["webkit", "moz", "ms", "o"];
var value = this.css(attribute);
if (value === undefined) {
prefixes.some(function(prefix) {
value = this.css(prefix + attribute.substr(0, 1).toUpperCase() + attribute.substr(1));
return value !== undefined;
}, this);
}
return value === undefined ? null : value;
};
NodeContainer.prototype.computedStyle = function(type) {
return this.node.ownerDocument.defaultView.getComputedStyle(this.node, type);
};
NodeContainer.prototype.cssInt = function(attribute) {
var value = parseInt(this.css(attribute), 10);
return (isNaN(value)) ? 0 : value; // borders in old IE are throwing 'medium' for demo.html
};
NodeContainer.prototype.color = function(attribute) {
return this.colors[attribute] || (this.colors[attribute] = new Color(this.css(attribute)));
};
NodeContainer.prototype.cssFloat = function(attribute) {
var value = parseFloat(this.css(attribute));
return (isNaN(value)) ? 0 : value;
};
NodeContainer.prototype.fontWeight = function() {
var weight = this.css("fontWeight");
switch(parseInt(weight, 10)){
case 401:
weight = "bold";
break;
case 400:
weight = "normal";
break;
}
return weight;
};
NodeContainer.prototype.parseClip = function() {
var matches = this.css('clip').match(this.CLIP);
if (matches) {
return {
top: parseInt(matches[1], 10),
right: parseInt(matches[2], 10),
bottom: parseInt(matches[3], 10),
left: parseInt(matches[4], 10)
};
}
return null;
};
NodeContainer.prototype.parseBackgroundImages = function() {
return this.backgroundImages || (this.backgroundImages = parseBackgrounds(this.css("backgroundImage")));
};
NodeContainer.prototype.cssList = function(property, index) {
var value = (this.css(property) || '').split(',');
value = value[index || 0] || value[0] || 'auto';
value = value.trim().split(' ');
if (value.length === 1) {
value = [value[0], isPercentage(value[0]) ? 'auto' : value[0]];
}
return value;
};
NodeContainer.prototype.parseBackgroundSize = function(bounds, image, index) {
var size = this.cssList("backgroundSize", index);
var width, height;
if (isPercentage(size[0])) {
width = bounds.width * parseFloat(size[0]) / 100;
} else if (/contain|cover/.test(size[0])) {
var targetRatio = bounds.width / bounds.height, currentRatio = image.width / image.height;
return (targetRatio < currentRatio ^ size[0] === 'contain') ? {width: bounds.height * currentRatio, height: bounds.height} : {width: bounds.width, height: bounds.width / currentRatio};
} else {
width = parseInt(size[0], 10);
}
if (size[0] === 'auto' && size[1] === 'auto') {
height = image.height;
} else if (size[1] === 'auto') {
height = width / image.width * image.height;
} else if (isPercentage(size[1])) {
height = bounds.height * parseFloat(size[1]) / 100;
} else {
height = parseInt(size[1], 10);
}
if (size[0] === 'auto') {
width = height / image.height * image.width;
}
return {width: width, height: height};
};
NodeContainer.prototype.parseBackgroundPosition = function(bounds, image, index, backgroundSize) {
var position = this.cssList('backgroundPosition', index);
var left, top;
if (isPercentage(position[0])){
left = (bounds.width - (backgroundSize || image).width) * (parseFloat(position[0]) / 100);
} else {
left = parseInt(position[0], 10);
}
if (position[1] === 'auto') {
top = left / image.width * image.height;
} else if (isPercentage(position[1])){
top = (bounds.height - (backgroundSize || image).height) * parseFloat(position[1]) / 100;
} else {
top = parseInt(position[1], 10);
}
if (position[0] === 'auto') {
left = top / image.height * image.width;
}
return {left: left, top: top};
};
NodeContainer.prototype.parseBackgroundRepeat = function(index) {
return this.cssList("backgroundRepeat", index)[0];
};
NodeContainer.prototype.parseTextShadows = function() {
var textShadow = this.css("textShadow");
var results = [];
if (textShadow && textShadow !== 'none') {
var shadows = textShadow.match(this.TEXT_SHADOW_PROPERTY);
for (var i = 0; shadows && (i < shadows.length); i++) {
var s = shadows[i].match(this.TEXT_SHADOW_VALUES);
results.push({
color: new Color(s[0]),
offsetX: s[1] ? parseFloat(s[1].replace('px', '')) : 0,
offsetY: s[2] ? parseFloat(s[2].replace('px', '')) : 0,
blur: s[3] ? s[3].replace('px', '') : 0
});
}
}
return results;
};
NodeContainer.prototype.parseTransform = function() {
if (!this.transformData) {
if (this.hasTransform()) {
var offset = this.parseBounds();
var origin = this.prefixedCss("transformOrigin").split(" ").map(removePx).map(asFloat);
origin[0] += offset.left;
origin[1] += offset.top;
this.transformData = {
origin: origin,
matrix: this.parseTransformMatrix()
};
} else {
this.transformData = {
origin: [0, 0],
matrix: [1, 0, 0, 1, 0, 0]
};
}
}
return this.transformData;
};
NodeContainer.prototype.parseTransformMatrix = function() {
if (!this.transformMatrix) {
var transform = this.prefixedCss("transform");
var matrix = transform ? parseMatrix(transform.match(this.MATRIX_PROPERTY)) : null;
this.transformMatrix = matrix ? matrix : [1, 0, 0, 1, 0, 0];
}
return this.transformMatrix;
};
NodeContainer.prototype.parseBounds = function() {
return this.bounds || (this.bounds = this.hasTransform() ? offsetBounds(this.node) : getBounds(this.node));
};
NodeContainer.prototype.hasTransform = function() {
return this.parseTransformMatrix().join(",") !== "1,0,0,1,0,0" || (this.parent && this.parent.hasTransform());
};
NodeContainer.prototype.getValue = function() {
var value = this.node.value || "";
if (this.node.tagName === "SELECT") {
value = selectionValue(this.node);
} else if (this.node.type === "password") {
value = Array(value.length + 1).join('\u2022'); // jshint ignore:line
}
return value.length === 0 ? (this.node.placeholder || "") : value;
};
NodeContainer.prototype.MATRIX_PROPERTY = /(matrix|matrix3d)\((.+)\)/;
NodeContainer.prototype.TEXT_SHADOW_PROPERTY = /((rgba|rgb)\([^\)]+\)(\s-?\d+px){0,})/g;
NodeContainer.prototype.TEXT_SHADOW_VALUES = /(-?\d+px)|(#.+)|(rgb\(.+\))|(rgba\(.+\))/g;
NodeContainer.prototype.CLIP = /^rect\((\d+)px,? (\d+)px,? (\d+)px,? (\d+)px\)$/;
function selectionValue(node) {
var option = node.options[node.selectedIndex || 0];
return option ? (option.text || "") : "";
}
function parseMatrix(match) {
if (match && match[1] === "matrix") {
return match[2].split(",").map(function(s) {
return parseFloat(s.trim());
});
} else if (match && match[1] === "matrix3d") {
var matrix3d = match[2].split(",").map(function(s) {
return parseFloat(s.trim());
});
return [matrix3d[0], matrix3d[1], matrix3d[4], matrix3d[5], matrix3d[12], matrix3d[13]];
}
}
function isPercentage(value) {
return value.toString().indexOf("%") !== -1;
}
function removePx(str) {
return str.replace("px", "");
}
function asFloat(str) {
return parseFloat(str);
}
module.exports = NodeContainer;
},{"./color":3,"./utils":26}],15:[function(_dereq_,module,exports){
var log = _dereq_('./log');
var punycode = _dereq_('punycode');
var NodeContainer = _dereq_('./nodecontainer');
var TextContainer = _dereq_('./textcontainer');
var PseudoElementContainer = _dereq_('./pseudoelementcontainer');
var FontMetrics = _dereq_('./fontmetrics');
var Color = _dereq_('./color');
var StackingContext = _dereq_('./stackingcontext');
var utils = _dereq_('./utils');
var bind = utils.bind;
var getBounds = utils.getBounds;
var parseBackgrounds = utils.parseBackgrounds;
var offsetBounds = utils.offsetBounds;
function NodeParser(element, renderer, support, imageLoader, options) {
log("Starting NodeParser");
this.renderer = renderer;
this.options = options;
this.range = null;
this.support = support;
this.renderQueue = [];
this.stack = new StackingContext(true, 1, element.ownerDocument, null);
var parent = new NodeContainer(element, null);
if (options.background) {
renderer.rectangle(0, 0, renderer.width, renderer.height, new Color(options.background));
}
if (element === element.ownerDocument.documentElement) {
// http://www.w3.org/TR/css3-background/#special-backgrounds
var canvasBackground = new NodeContainer(parent.color('backgroundColor').isTransparent() ? element.ownerDocument.body : element.ownerDocument.documentElement, null);
renderer.rectangle(0, 0, renderer.width, renderer.height, canvasBackground.color('backgroundColor'));
}
parent.visibile = parent.isElementVisible();
this.createPseudoHideStyles(element.ownerDocument);
this.disableAnimations(element.ownerDocument);
this.nodes = flatten([parent].concat(this.getChildren(parent)).filter(function(container) {
return container.visible = container.isElementVisible();
}).map(this.getPseudoElements, this));
this.fontMetrics = new FontMetrics();
log("Fetched nodes, total:", this.nodes.length);
log("Calculate overflow clips");
this.calculateOverflowClips();
log("Start fetching images");
this.images = imageLoader.fetch(this.nodes.filter(isElement));
this.ready = this.images.ready.then(bind(function() {
log("Images loaded, starting parsing");
log("Creating stacking contexts");
this.createStackingContexts();
log("Sorting stacking contexts");
this.sortStackingContexts(this.stack);
this.parse(this.stack);
log("Render queue created with " + this.renderQueue.length + " items");
return new Promise(bind(function(resolve) {
if (!options.async) {
this.renderQueue.forEach(this.paint, this);
resolve();
} else if (typeof(options.async) === "function") {
options.async.call(this, this.renderQueue, resolve);
} else if (this.renderQueue.length > 0){
this.renderIndex = 0;
this.asyncRenderer(this.renderQueue, resolve);
} else {
resolve();
}
}, this));
}, this));
}
NodeParser.prototype.calculateOverflowClips = function() {
this.nodes.forEach(function(container) {
if (isElement(container)) {
if (isPseudoElement(container)) {
container.appendToDOM();
}
container.borders = this.parseBorders(container);
var clip = (container.css('overflow') === "hidden") ? [container.borders.clip] : [];
var cssClip = container.parseClip();
if (cssClip && ["absolute", "fixed"].indexOf(container.css('position')) !== -1) {
clip.push([["rect",
container.bounds.left + cssClip.left,
container.bounds.top + cssClip.top,
cssClip.right - cssClip.left,
cssClip.bottom - cssClip.top
]]);
}
container.clip = hasParentClip(container) ? container.parent.clip.concat(clip) : clip;
container.backgroundClip = (container.css('overflow') !== "hidden") ? container.clip.concat([container.borders.clip]) : container.clip;
if (isPseudoElement(container)) {
container.cleanDOM();
}
} else if (isTextNode(container)) {
container.clip = hasParentClip(container) ? container.parent.clip : [];
}
if (!isPseudoElement(container)) {
container.bounds = null;
}
}, this);
};
function hasParentClip(container) {
return container.parent && container.parent.clip.length;
}
NodeParser.prototype.asyncRenderer = function(queue, resolve, asyncTimer) {
asyncTimer = asyncTimer || Date.now();
this.paint(queue[this.renderIndex++]);
if (queue.length === this.renderIndex) {
resolve();
} else if (asyncTimer + 20 > Date.now()) {
this.asyncRenderer(queue, resolve, asyncTimer);
} else {
setTimeout(bind(function() {
this.asyncRenderer(queue, resolve);
}, this), 0);
}
};
NodeParser.prototype.createPseudoHideStyles = function(document) {
this.createStyles(document, '.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + ':before { content: "" !important; display: none !important; }' +
'.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER + ':after { content: "" !important; display: none !important; }');
};
NodeParser.prototype.disableAnimations = function(document) {
this.createStyles(document, '* { -webkit-animation: none !important; -moz-animation: none !important; -o-animation: none !important; animation: none !important; ' +
'-webkit-transition: none !important; -moz-transition: none !important; -o-transition: none !important; transition: none !important;}');
};
NodeParser.prototype.createStyles = function(document, styles) {
var hidePseudoElements = document.createElement('style');
hidePseudoElements.innerHTML = styles;
document.body.appendChild(hidePseudoElements);
};
NodeParser.prototype.getPseudoElements = function(container) {
var nodes = [[container]];
if (container.node.nodeType === Node.ELEMENT_NODE) {
var before = this.getPseudoElement(container, ":before");
var after = this.getPseudoElement(container, ":after");
if (before) {
nodes.push(before);
}
if (after) {
nodes.push(after);
}
}
return flatten(nodes);
};
function toCamelCase(str) {
return str.replace(/(\-[a-z])/g, function(match){
return match.toUpperCase().replace('-','');
});
}
NodeParser.prototype.getPseudoElement = function(container, type) {
var style = container.computedStyle(type);
if(!style || !style.content || style.content === "none" || style.content === "-moz-alt-content" || style.display === "none") {
return null;
}
var content = stripQuotes(style.content);
var isImage = content.substr(0, 3) === 'url';
var pseudoNode = document.createElement(isImage ? 'img' : 'html2canvaspseudoelement');
var pseudoContainer = new PseudoElementContainer(pseudoNode, container, type);
for (var i = style.length-1; i >= 0; i--) {
var property = toCamelCase(style.item(i));
pseudoNode.style[property] = style[property];
}
pseudoNode.className = PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + " " + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER;
if (isImage) {
pseudoNode.src = parseBackgrounds(content)[0].args[0];
return [pseudoContainer];
} else {
var text = document.createTextNode(content);
pseudoNode.appendChild(text);
return [pseudoContainer, new TextContainer(text, pseudoContainer)];
}
};
NodeParser.prototype.getChildren = function(parentContainer) {
return flatten([].filter.call(parentContainer.node.childNodes, renderableNode).map(function(node) {
var container = [node.nodeType === Node.TEXT_NODE ? new TextContainer(node, parentContainer) : new NodeContainer(node, parentContainer)].filter(nonIgnoredElement);
return node.nodeType === Node.ELEMENT_NODE && container.length && node.tagName !== "TEXTAREA" ? (container[0].isElementVisible() ? container.concat(this.getChildren(container[0])) : []) : container;
}, this));
};
NodeParser.prototype.newStackingContext = function(container, hasOwnStacking) {
var stack = new StackingContext(hasOwnStacking, container.getOpacity(), container.node, container.parent);
container.cloneTo(stack);
var parentStack = hasOwnStacking ? stack.getParentStack(this) : stack.parent.stack;
parentStack.contexts.push(stack);
container.stack = stack;
};
NodeParser.prototype.createStackingContexts = function() {
this.nodes.forEach(function(container) {
if (isElement(container) && (this.isRootElement(container) || hasOpacity(container) || isPositionedForStacking(container) || this.isBodyWithTransparentRoot(container) || container.hasTransform())) {
this.newStackingContext(container, true);
} else if (isElement(container) && ((isPositioned(container) && zIndex0(container)) || isInlineBlock(container) || isFloating(container))) {
this.newStackingContext(container, false);
} else {
container.assignStack(container.parent.stack);
}
}, this);
};
NodeParser.prototype.isBodyWithTransparentRoot = function(container) {
return container.node.nodeName === "BODY" && container.parent.color('backgroundColor').isTransparent();
};
NodeParser.prototype.isRootElement = function(container) {
return container.parent === null;
};
NodeParser.prototype.sortStackingContexts = function(stack) {
stack.contexts.sort(zIndexSort(stack.contexts.slice(0)));
stack.contexts.forEach(this.sortStackingContexts, this);
};
NodeParser.prototype.parseTextBounds = function(container) {
return function(text, index, textList) {
if (container.parent.css("textDecoration").substr(0, 4) !== "none" || text.trim().length !== 0) {
if (this.support.rangeBounds && !container.parent.hasTransform()) {
var offset = textList.slice(0, index).join("").length;
return this.getRangeBounds(container.node, offset, text.length);
} else if (container.node && typeof(container.node.data) === "string") {
var replacementNode = container.node.splitText(text.length);
var bounds = this.getWrapperBounds(container.node, container.parent.hasTransform());
container.node = replacementNode;
return bounds;
}
} else if(!this.support.rangeBounds || container.parent.hasTransform()){
container.node = container.node.splitText(text.length);
}
return {};
};
};
NodeParser.prototype.getWrapperBounds = function(node, transform) {
var wrapper = node.ownerDocument.createElement('html2canvaswrapper');
var parent = node.parentNode,
backupText = node.cloneNode(true);
wrapper.appendChild(node.cloneNode(true));
parent.replaceChild(wrapper, node);
var bounds = transform ? offsetBounds(wrapper) : getBounds(wrapper);
parent.replaceChild(backupText, wrapper);
return bounds;
};
NodeParser.prototype.getRangeBounds = function(node, offset, length) {
var range = this.range || (this.range = node.ownerDocument.createRange());
range.setStart(node, offset);
range.setEnd(node, offset + length);
return range.getBoundingClientRect();
};
function ClearTransform() {}
NodeParser.prototype.parse = function(stack) {
// http://www.w3.org/TR/CSS21/visuren.html#z-index
var negativeZindex = stack.contexts.filter(negativeZIndex); // 2. the child stacking contexts with negative stack levels (most negative first).
var descendantElements = stack.children.filter(isElement);
var descendantNonFloats = descendantElements.filter(not(isFloating));
var nonInlineNonPositionedDescendants = descendantNonFloats.filter(not(isPositioned)).filter(not(inlineLevel)); // 3 the in-flow, non-inline-level, non-positioned descendants.
var nonPositionedFloats = descendantElements.filter(not(isPositioned)).filter(isFloating); // 4. the non-positioned floats.
var inFlow = descendantNonFloats.filter(not(isPositioned)).filter(inlineLevel); // 5. the in-flow, inline-level, non-positioned descendants, including inline tables and inline blocks.
var stackLevel0 = stack.contexts.concat(descendantNonFloats.filter(isPositioned)).filter(zIndex0); // 6. the child stacking contexts with stack level 0 and the positioned descendants with stack level 0.
var text = stack.children.filter(isTextNode).filter(hasText);
var positiveZindex = stack.contexts.filter(positiveZIndex); // 7. the child stacking contexts with positive stack levels (least positive first).
negativeZindex.concat(nonInlineNonPositionedDescendants).concat(nonPositionedFloats)
.concat(inFlow).concat(stackLevel0).concat(text).concat(positiveZindex).forEach(function(container) {
this.renderQueue.push(container);
if (isStackingContext(container)) {
this.parse(container);
this.renderQueue.push(new ClearTransform());
}
}, this);
};
NodeParser.prototype.paint = function(container) {
try {
if (container instanceof ClearTransform) {
this.renderer.ctx.restore();
} else if (isTextNode(container)) {
if (isPseudoElement(container.parent)) {
container.parent.appendToDOM();
}
this.paintText(container);
if (isPseudoElement(container.parent)) {
container.parent.cleanDOM();
}
} else {
this.paintNode(container);
}
} catch(e) {
log(e);
if (this.options.strict) {
throw e;
}
}
};
NodeParser.prototype.paintNode = function(container) {
if (isStackingContext(container)) {
this.renderer.setOpacity(container.opacity);
this.renderer.ctx.save();
if (container.hasTransform()) {
this.renderer.setTransform(container.parseTransform());
}
}
if (container.node.nodeName === "INPUT" && container.node.type === "checkbox") {
this.paintCheckbox(container);
} else if (container.node.nodeName === "INPUT" && container.node.type === "radio") {
this.paintRadio(container);
} else {
this.paintElement(container);
}
};
NodeParser.prototype.paintElement = function(container) {
var bounds = container.parseBounds();
this.renderer.clip(container.backgroundClip, function() {
this.renderer.renderBackground(container, bounds, container.borders.borders.map(getWidth));
}, this);
this.renderer.clip(container.clip, function() {
this.renderer.renderBorders(container.borders.borders);
}, this);
this.renderer.clip(container.backgroundClip, function() {
switch (container.node.nodeName) {
case "svg":
case "IFRAME":
var imgContainer = this.images.get(container.node);
if (imgContainer) {
this.renderer.renderImage(container, bounds, container.borders, imgContainer);
} else {
log("Error loading <" + container.node.nodeName + ">", container.node);
}
break;
case "IMG":
var imageContainer = this.images.get(container.node.src);
if (imageContainer) {
this.renderer.renderImage(container, bounds, container.borders, imageContainer);
} else {
log("Error loading <img>", container.node.src);
}
break;
case "CANVAS":
this.renderer.renderImage(container, bounds, container.borders, {image: container.node});
break;
case "SELECT":
case "INPUT":
case "TEXTAREA":
this.paintFormValue(container);
break;
}
}, this);
};
NodeParser.prototype.paintCheckbox = function(container) {
var b = container.parseBounds();
var size = Math.min(b.width, b.height);
var bounds = {width: size - 1, height: size - 1, top: b.top, left: b.left};
var r = [3, 3];
var radius = [r, r, r, r];
var borders = [1,1,1,1].map(function(w) {
return {color: new Color('#A5A5A5'), width: w};
});
var borderPoints = calculateCurvePoints(bounds, radius, borders);
this.renderer.clip(container.backgroundClip, function() {
this.renderer.rectangle(bounds.left + 1, bounds.top + 1, bounds.width - 2, bounds.height - 2, new Color("#DEDEDE"));
this.renderer.renderBorders(calculateBorders(borders, bounds, borderPoints, radius));
if (container.node.checked) {
this.renderer.font(new Color('#424242'), 'normal', 'normal', 'bold', (size - 3) + "px", 'arial');
this.renderer.text("\u2714", bounds.left + size / 6, bounds.top + size - 1);
}
}, this);
};
NodeParser.prototype.paintRadio = function(container) {
var bounds = container.parseBounds();
var size = Math.min(bounds.width, bounds.height) - 2;
this.renderer.clip(container.backgroundClip, function() {
this.renderer.circleStroke(bounds.left + 1, bounds.top + 1, size, new Color('#DEDEDE'), 1, new Color('#A5A5A5'));
if (container.node.checked) {
this.renderer.circle(Math.ceil(bounds.left + size / 4) + 1, Math.ceil(bounds.top + size / 4) + 1, Math.floor(size / 2), new Color('#424242'));
}
}, this);
};
NodeParser.prototype.paintFormValue = function(container) {
var value = container.getValue();
if (value.length > 0) {
var document = container.node.ownerDocument;
var wrapper = document.createElement('html2canvaswrapper');
var properties = ['lineHeight', 'textAlign', 'fontFamily', 'fontWeight', 'fontSize', 'color',
'paddingLeft', 'paddingTop', 'paddingRight', 'paddingBottom',
'width', 'height', 'borderLeftStyle', 'borderTopStyle', 'borderLeftWidth', 'borderTopWidth',
'boxSizing', 'whiteSpace', 'wordWrap'];
properties.forEach(function(property) {
try {
wrapper.style[property] = container.css(property);
} catch(e) {
// Older IE has issues with "border"
log("html2canvas: Parse: Exception caught in renderFormValue: " + e.message);
}
});
var bounds = container.parseBounds();
wrapper.style.position = "fixed";
wrapper.style.left = bounds.left + "px";
wrapper.style.top = bounds.top + "px";
wrapper.textContent = value;
document.body.appendChild(wrapper);
this.paintText(new TextContainer(wrapper.firstChild, container));
document.body.removeChild(wrapper);
}
};
NodeParser.prototype.paintText = function(container) {
container.applyTextTransform();
var characters = punycode.ucs2.decode(container.node.data);
var textList = (!this.options.letterRendering || noLetterSpacing(container)) && !hasUnicode(container.node.data) ? getWords(characters) : characters.map(function(character) {
return punycode.ucs2.encode([character]);
});
var weight = container.parent.fontWeight();
var size = container.parent.css('fontSize');
var family = container.parent.css('fontFamily');
var shadows = container.parent.parseTextShadows();
this.renderer.font(container.parent.color('color'), container.parent.css('fontStyle'), container.parent.css('fontVariant'), weight, size, family);
if (shadows.length) {
// TODO: support multiple text shadows
this.renderer.fontShadow(shadows[0].color, shadows[0].offsetX, shadows[0].offsetY, shadows[0].blur);
} else {
this.renderer.clearShadow();
}
this.renderer.clip(container.parent.clip, function() {
textList.map(this.parseTextBounds(container), this).forEach(function(bounds, index) {
if (bounds) {
this.renderer.text(textList[index], bounds.left, bounds.bottom);
this.renderTextDecoration(container.parent, bounds, this.fontMetrics.getMetrics(family, size));
}
}, this);
}, this);
};
NodeParser.prototype.renderTextDecoration = function(container, bounds, metrics) {
switch(container.css("textDecoration").split(" ")[0]) {
case "underline":
// Draws a line at the baseline of the font
// TODO As some browsers display the line as more than 1px if the font-size is big, need to take that into account both in position and size
this.renderer.rectangle(bounds.left, Math.round(bounds.top + metrics.baseline + metrics.lineWidth), bounds.width, 1, container.color("color"));
break;
case "overline":
this.renderer.rectangle(bounds.left, Math.round(bounds.top), bounds.width, 1, container.color("color"));
break;
case "line-through":
// TODO try and find exact position for line-through
this.renderer.rectangle(bounds.left, Math.ceil(bounds.top + metrics.middle + metrics.lineWidth), bounds.width, 1, container.color("color"));
break;
}
};
var borderColorTransforms = {
inset: [
["darken", 0.60],
["darken", 0.10],
["darken", 0.10],
["darken", 0.60]
]
};
NodeParser.prototype.parseBorders = function(container) {
var nodeBounds = container.parseBounds();
var radius = getBorderRadiusData(container);
var borders = ["Top", "Right", "Bottom", "Left"].map(function(side, index) {
var style = container.css('border' + side + 'Style');
var color = container.color('border' + side + 'Color');
if (style === "inset" && color.isBlack()) {
color = new Color([255, 255, 255, color.a]); // this is wrong, but
}
var colorTransform = borderColorTransforms[style] ? borderColorTransforms[style][index] : null;
return {
width: container.cssInt('border' + side + 'Width'),
color: colorTransform ? color[colorTransform[0]](colorTransform[1]) : color,
args: null
};
});
var borderPoints = calculateCurvePoints(nodeBounds, radius, borders);
return {
clip: this.parseBackgroundClip(container, borderPoints, borders, radius, nodeBounds),
borders: calculateBorders(borders, nodeBounds, borderPoints, radius)
};
};
function calculateBorders(borders, nodeBounds, borderPoints, radius) {
return borders.map(function(border, borderSide) {
if (border.width > 0) {
var bx = nodeBounds.left;
var by = nodeBounds.top;
var bw = nodeBounds.width;
var bh = nodeBounds.height - (borders[2].width);
switch(borderSide) {
case 0:
// top border
bh = borders[0].width;
border.args = drawSide({
c1: [bx, by],
c2: [bx + bw, by],
c3: [bx + bw - borders[1].width, by + bh],
c4: [bx + borders[3].width, by + bh]
}, radius[0], radius[1],
borderPoints.topLeftOuter, borderPoints.topLeftInner, borderPoints.topRightOuter, borderPoints.topRightInner);
break;
case 1:
// right border
bx = nodeBounds.left + nodeBounds.width - (borders[1].width);
bw = borders[1].width;
border.args = drawSide({
c1: [bx + bw, by],
c2: [bx + bw, by + bh + borders[2].width],
c3: [bx, by + bh],
c4: [bx, by + borders[0].width]
}, radius[1], radius[2],
borderPoints.topRightOuter, borderPoints.topRightInner, borderPoints.bottomRightOuter, borderPoints.bottomRightInner);
break;
case 2:
// bottom border
by = (by + nodeBounds.height) - (borders[2].width);
bh = borders[2].width;
border.args = drawSide({
c1: [bx + bw, by + bh],
c2: [bx, by + bh],
c3: [bx + borders[3].width, by],
c4: [bx + bw - borders[3].width, by]
}, radius[2], radius[3],
borderPoints.bottomRightOuter, borderPoints.bottomRightInner, borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner);
break;
case 3:
// left border
bw = borders[3].width;
border.args = drawSide({
c1: [bx, by + bh + borders[2].width],
c2: [bx, by],
c3: [bx + bw, by + borders[0].width],
c4: [bx + bw, by + bh]
}, radius[3], radius[0],
borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner, borderPoints.topLeftOuter, borderPoints.topLeftInner);
break;
}
}
return border;
});
}
NodeParser.prototype.parseBackgroundClip = function(container, borderPoints, borders, radius, bounds) {
var backgroundClip = container.css('backgroundClip'),
borderArgs = [];
switch(backgroundClip) {
case "content-box":
case "padding-box":
parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftInner, borderPoints.topRightInner, bounds.left + borders[3].width, bounds.top + borders[0].width);
parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightInner, borderPoints.bottomRightInner, bounds.left + bounds.width - borders[1].width, bounds.top + borders[0].width);
parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightInner, borderPoints.bottomLeftInner, bounds.left + bounds.width - borders[1].width, bounds.top + bounds.height - borders[2].width);
parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftInner, borderPoints.topLeftInner, bounds.left + borders[3].width, bounds.top + bounds.height - borders[2].width);
break;
default:
parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftOuter, borderPoints.topRightOuter, bounds.left, bounds.top);
parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightOuter, borderPoints.bottomRightOuter, bounds.left + bounds.width, bounds.top);
parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightOuter, borderPoints.bottomLeftOuter, bounds.left + bounds.width, bounds.top + bounds.height);
parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftOuter, borderPoints.topLeftOuter, bounds.left, bounds.top + bounds.height);
break;
}
return borderArgs;
};
function getCurvePoints(x, y, r1, r2) {
var kappa = 4 * ((Math.sqrt(2) - 1) / 3);
var ox = (r1) * kappa, // control point offset horizontal
oy = (r2) * kappa, // control point offset vertical
xm = x + r1, // x-middle
ym = y + r2; // y-middle
return {
topLeft: bezierCurve({x: x, y: ym}, {x: x, y: ym - oy}, {x: xm - ox, y: y}, {x: xm, y: y}),
topRight: bezierCurve({x: x, y: y}, {x: x + ox,y: y}, {x: xm, y: ym - oy}, {x: xm, y: ym}),
bottomRight: bezierCurve({x: xm, y: y}, {x: xm, y: y + oy}, {x: x + ox, y: ym}, {x: x, y: ym}),
bottomLeft: bezierCurve({x: xm, y: ym}, {x: xm - ox, y: ym}, {x: x, y: y + oy}, {x: x, y:y})
};
}
function calculateCurvePoints(bounds, borderRadius, borders) {
var x = bounds.left,
y = bounds.top,
width = bounds.width,
height = bounds.height,
tlh = borderRadius[0][0] < width / 2 ? borderRadius[0][0] : width / 2,
tlv = borderRadius[0][1] < height / 2 ? borderRadius[0][1] : height / 2,
trh = borderRadius[1][0] < width / 2 ? borderRadius[1][0] : width / 2,
trv = borderRadius[1][1] < height / 2 ? borderRadius[1][1] : height / 2,
brh = borderRadius[2][0] < width / 2 ? borderRadius[2][0] : width / 2,
brv = borderRadius[2][1] < height / 2 ? borderRadius[2][1] : height / 2,
blh = borderRadius[3][0] < width / 2 ? borderRadius[3][0] : width / 2,
blv = borderRadius[3][1] < height / 2 ? borderRadius[3][1] : height / 2;
var topWidth = width - trh,
rightHeight = height - brv,
bottomWidth = width - brh,
leftHeight = height - blv;
return {
topLeftOuter: getCurvePoints(x, y, tlh, tlv).topLeft.subdivide(0.5),
topLeftInner: getCurvePoints(x + borders[3].width, y + borders[0].width, Math.max(0, tlh - borders[3].width), Math.max(0, tlv - borders[0].width)).topLeft.subdivide(0.5),
topRightOuter: getCurvePoints(x + topWidth, y, trh, trv).topRight.subdivide(0.5),
topRightInner: getCurvePoints(x + Math.min(topWidth, width + borders[3].width), y + borders[0].width, (topWidth > width + borders[3].width) ? 0 :trh - borders[3].width, trv - borders[0].width).topRight.subdivide(0.5),
bottomRightOuter: getCurvePoints(x + bottomWidth, y + rightHeight, brh, brv).bottomRight.subdivide(0.5),
bottomRightInner: getCurvePoints(x + Math.min(bottomWidth, width - borders[3].width), y + Math.min(rightHeight, height + borders[0].width), Math.max(0, brh - borders[1].width), brv - borders[2].width).bottomRight.subdivide(0.5),
bottomLeftOuter: getCurvePoints(x, y + leftHeight, blh, blv).bottomLeft.subdivide(0.5),
bottomLeftInner: getCurvePoints(x + borders[3].width, y + leftHeight, Math.max(0, blh - borders[3].width), blv - borders[2].width).bottomLeft.subdivide(0.5)
};
}
function bezierCurve(start, startControl, endControl, end) {
var lerp = function (a, b, t) {
return {
x: a.x + (b.x - a.x) * t,
y: a.y + (b.y - a.y) * t
};
};
return {
start: start,
startControl: startControl,
endControl: endControl,
end: end,
subdivide: function(t) {
var ab = lerp(start, startControl, t),
bc = lerp(startControl, endControl, t),
cd = lerp(endControl, end, t),
abbc = lerp(ab, bc, t),
bccd = lerp(bc, cd, t),
dest = lerp(abbc, bccd, t);
return [bezierCurve(start, ab, abbc, dest), bezierCurve(dest, bccd, cd, end)];
},
curveTo: function(borderArgs) {
borderArgs.push(["bezierCurve", startControl.x, startControl.y, endControl.x, endControl.y, end.x, end.y]);
},
curveToReversed: function(borderArgs) {
borderArgs.push(["bezierCurve", endControl.x, endControl.y, startControl.x, startControl.y, start.x, start.y]);
}
};
}
function drawSide(borderData, radius1, radius2, outer1, inner1, outer2, inner2) {
var borderArgs = [];
if (radius1[0] > 0 || radius1[1] > 0) {
borderArgs.push(["line", outer1[1].start.x, outer1[1].start.y]);
outer1[1].curveTo(borderArgs);
} else {
borderArgs.push([ "line", borderData.c1[0], borderData.c1[1]]);
}
if (radius2[0] > 0 || radius2[1] > 0) {
borderArgs.push(["line", outer2[0].start.x, outer2[0].start.y]);
outer2[0].curveTo(borderArgs);
borderArgs.push(["line", inner2[0].end.x, inner2[0].end.y]);
inner2[0].curveToReversed(borderArgs);
} else {
borderArgs.push(["line", borderData.c2[0], borderData.c2[1]]);
borderArgs.push(["line", borderData.c3[0], borderData.c3[1]]);
}
if (radius1[0] > 0 || radius1[1] > 0) {
borderArgs.push(["line", inner1[1].end.x, inner1[1].end.y]);
inner1[1].curveToReversed(borderArgs);
} else {
borderArgs.push(["line", borderData.c4[0], borderData.c4[1]]);
}
return borderArgs;
}
function parseCorner(borderArgs, radius1, radius2, corner1, corner2, x, y) {
if (radius1[0] > 0 || radius1[1] > 0) {
borderArgs.push(["line", corner1[0].start.x, corner1[0].start.y]);
corner1[0].curveTo(borderArgs);
corner1[1].curveTo(borderArgs);
} else {
borderArgs.push(["line", x, y]);
}
if (radius2[0] > 0 || radius2[1] > 0) {
borderArgs.push(["line", corner2[0].start.x, corner2[0].start.y]);
}
}
function negativeZIndex(container) {
return container.cssInt("zIndex") < 0;
}
function positiveZIndex(container) {
return container.cssInt("zIndex") > 0;
}
function zIndex0(container) {
return container.cssInt("zIndex") === 0;
}
function inlineLevel(container) {
return ["inline", "inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
}
function isStackingContext(container) {
return (container instanceof StackingContext);
}
function hasText(container) {
return container.node.data.trim().length > 0;
}
function noLetterSpacing(container) {
return (/^(normal|none|0px)$/.test(container.parent.css("letterSpacing")));
}
function getBorderRadiusData(container) {
return ["TopLeft", "TopRight", "BottomRight", "BottomLeft"].map(function(side) {
var value = container.css('border' + side + 'Radius');
var arr = value.split(" ");
if (arr.length <= 1) {
arr[1] = arr[0];
}
return arr.map(asInt);
});
}
function renderableNode(node) {
return (node.nodeType === Node.TEXT_NODE || node.nodeType === Node.ELEMENT_NODE);
}
function isPositionedForStacking(container) {
var position = container.css("position");
var zIndex = (["absolute", "relative", "fixed"].indexOf(position) !== -1) ? container.css("zIndex") : "auto";
return zIndex !== "auto";
}
function isPositioned(container) {
return container.css("position") !== "static";
}
function isFloating(container) {
return container.css("float") !== "none";
}
function isInlineBlock(container) {
return ["inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
}
function not(callback) {
var context = this;
return function() {
return !callback.apply(context, arguments);
};
}
function isElement(container) {
return container.node.nodeType === Node.ELEMENT_NODE;
}
function isPseudoElement(container) {
return container.isPseudoElement === true;
}
function isTextNode(container) {
return container.node.nodeType === Node.TEXT_NODE;
}
function zIndexSort(contexts) {
return function(a, b) {
return (a.cssInt("zIndex") + (contexts.indexOf(a) / contexts.length)) - (b.cssInt("zIndex") + (contexts.indexOf(b) / contexts.length));
};
}
function hasOpacity(container) {
return container.getOpacity() < 1;
}
function asInt(value) {
return parseInt(value, 10);
}
function getWidth(border) {
return border.width;
}
function nonIgnoredElement(nodeContainer) {
return (nodeContainer.node.nodeType !== Node.ELEMENT_NODE || ["SCRIPT", "HEAD", "TITLE", "OBJECT", "BR", "OPTION"].indexOf(nodeContainer.node.nodeName) === -1);
}
function flatten(arrays) {
return [].concat.apply([], arrays);
}
function stripQuotes(content) {
var first = content.substr(0, 1);
return (first === content.substr(content.length - 1) && first.match(/'|"/)) ? content.substr(1, content.length - 2) : content;
}
function getWords(characters) {
var words = [], i = 0, onWordBoundary = false, word;
while(characters.length) {
if (isWordBoundary(characters[i]) === onWordBoundary) {
word = characters.splice(0, i);
if (word.length) {
words.push(punycode.ucs2.encode(word));
}
onWordBoundary =! onWordBoundary;
i = 0;
} else {
i++;
}
if (i >= characters.length) {
word = characters.splice(0, i);
if (word.length) {
words.push(punycode.ucs2.encode(word));
}
}
}
return words;
}
function isWordBoundary(characterCode) {
return [
32, // <space>
13, // \r
10, // \n
9, // \t
45 // -
].indexOf(characterCode) !== -1;
}
function hasUnicode(string) {
return (/[^\u0000-\u00ff]/).test(string);
}
module.exports = NodeParser;
},{"./color":3,"./fontmetrics":7,"./log":13,"./nodecontainer":14,"./pseudoelementcontainer":18,"./stackingcontext":21,"./textcontainer":25,"./utils":26,"punycode":1}],16:[function(_dereq_,module,exports){
var XHR = _dereq_('./xhr');
var utils = _dereq_('./utils');
var log = _dereq_('./log');
var createWindowClone = _dereq_('./clone');
var decode64 = utils.decode64;
function Proxy(src, proxyUrl, document) {
var supportsCORS = ('withCredentials' in new XMLHttpRequest());
if (!proxyUrl) {
return Promise.reject("No proxy configured");
}
var callback = createCallback(supportsCORS);
var url = createProxyUrl(proxyUrl, src, callback);
return supportsCORS ? XHR(url) : (jsonp(document, url, callback).then(function(response) {
return decode64(response.content);
}));
}
var proxyCount = 0;
function ProxyURL(src, proxyUrl, document) {
var supportsCORSImage = ('crossOrigin' in new Image());
var callback = createCallback(supportsCORSImage);
var url = createProxyUrl(proxyUrl, src, callback);
return (supportsCORSImage ? Promise.resolve(url) : jsonp(document, url, callback).then(function(response) {
return "data:" + response.type + ";base64," + response.content;
}));
}
function jsonp(document, url, callback) {
return new Promise(function(resolve, reject) {
var s = document.createElement("script");
var cleanup = function() {
delete window.html2canvas.proxy[callback];
document.body.removeChild(s);
};
window.html2canvas.proxy[callback] = function(response) {
cleanup();
resolve(response);
};
s.src = url;
s.onerror = function(e) {
cleanup();
reject(e);
};
document.body.appendChild(s);
});
}
function createCallback(useCORS) {
return !useCORS ? "html2canvas_" + Date.now() + "_" + (++proxyCount) + "_" + Math.round(Math.random() * 100000) : "";
}
function createProxyUrl(proxyUrl, src, callback) {
return proxyUrl + "?url=" + encodeURIComponent(src) + (callback.length ? "&callback=html2canvas.proxy." + callback : "");
}
function documentFromHTML(src) {
return function(html) {
var parser = new DOMParser(), doc;
try {
doc = parser.parseFromString(html, "text/html");
} catch(e) {
log("DOMParser not supported, falling back to createHTMLDocument");
doc = document.implementation.createHTMLDocument("");
try {
doc.open();
doc.write(html);
doc.close();
} catch(ee) {
log("createHTMLDocument write not supported, falling back to document.body.innerHTML");
doc.body.innerHTML = html; // ie9 doesnt support writing to documentElement
}
}
var b = doc.querySelector("base");
if (!b || !b.href.host) {
var base = doc.createElement("base");
base.href = src;
doc.head.insertBefore(base, doc.head.firstChild);
}
return doc;
};
}
function loadUrlDocument(src, proxy, document, width, height, options) {
return new Proxy(src, proxy, window.document).then(documentFromHTML(src)).then(function(doc) {
return createWindowClone(doc, document, width, height, options, 0, 0);
});
}
exports.Proxy = Proxy;
exports.ProxyURL = ProxyURL;
exports.loadUrlDocument = loadUrlDocument;
},{"./clone":2,"./log":13,"./utils":26,"./xhr":28}],17:[function(_dereq_,module,exports){
var ProxyURL = _dereq_('./proxy').ProxyURL;
function ProxyImageContainer(src, proxy) {
var link = document.createElement("a");
link.href = src;
src = link.href;
this.src = src;
this.image = new Image();
var self = this;
this.promise = new Promise(function(resolve, reject) {
self.image.crossOrigin = "Anonymous";
self.image.onload = resolve;
self.image.onerror = reject;
new ProxyURL(src, proxy, document).then(function(url) {
self.image.src = url;
})['catch'](reject);
});
}
module.exports = ProxyImageContainer;
},{"./proxy":16}],18:[function(_dereq_,module,exports){
var NodeContainer = _dereq_('./nodecontainer');
function PseudoElementContainer(node, parent, type) {
NodeContainer.call(this, node, parent);
this.isPseudoElement = true;
this.before = type === ":before";
}
PseudoElementContainer.prototype.cloneTo = function(stack) {
PseudoElementContainer.prototype.cloneTo.call(this, stack);
stack.isPseudoElement = true;
stack.before = this.before;
};
PseudoElementContainer.prototype = Object.create(NodeContainer.prototype);
PseudoElementContainer.prototype.appendToDOM = function() {
if (this.before) {
this.parent.node.insertBefore(this.node, this.parent.node.firstChild);
} else {
this.parent.node.appendChild(this.node);
}
this.parent.node.className += " " + this.getHideClass();
};
PseudoElementContainer.prototype.cleanDOM = function() {
this.node.parentNode.removeChild(this.node);
this.parent.node.className = this.parent.node.className.replace(this.getHideClass(), "");
};
PseudoElementContainer.prototype.getHideClass = function() {
return this["PSEUDO_HIDE_ELEMENT_CLASS_" + (this.before ? "BEFORE" : "AFTER")];
};
PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE = "___html2canvas___pseudoelement_before";
PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER = "___html2canvas___pseudoelement_after";
module.exports = PseudoElementContainer;
},{"./nodecontainer":14}],19:[function(_dereq_,module,exports){
var log = _dereq_('./log');
function Renderer(width, height, images, options, document) {
this.width = width;
this.height = height;
this.images = images;
this.options = options;
this.document = document;
}
Renderer.prototype.renderImage = function(container, bounds, borderData, imageContainer) {
var paddingLeft = container.cssInt('paddingLeft'),
paddingTop = container.cssInt('paddingTop'),
paddingRight = container.cssInt('paddingRight'),
paddingBottom = container.cssInt('paddingBottom'),
borders = borderData.borders;
var width = bounds.width - (borders[1].width + borders[3].width + paddingLeft + paddingRight);
var height = bounds.height - (borders[0].width + borders[2].width + paddingTop + paddingBottom);
this.drawImage(
imageContainer,
0,
0,
imageContainer.image.width || width,
imageContainer.image.height || height,
bounds.left + paddingLeft + borders[3].width,
bounds.top + paddingTop + borders[0].width,
width,
height
);
};
Renderer.prototype.renderBackground = function(container, bounds, borderData) {
if (bounds.height > 0 && bounds.width > 0) {
this.renderBackgroundColor(container, bounds);
this.renderBackgroundImage(container, bounds, borderData);
}
};
Renderer.prototype.renderBackgroundColor = function(container, bounds) {
var color = container.color("backgroundColor");
if (!color.isTransparent()) {
this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, color);
}
};
Renderer.prototype.renderBorders = function(borders) {
borders.forEach(this.renderBorder, this);
};
Renderer.prototype.renderBorder = function(data) {
if (!data.color.isTransparent() && data.args !== null) {
this.drawShape(data.args, data.color);
}
};
Renderer.prototype.renderBackgroundImage = function(container, bounds, borderData) {
var backgroundImages = container.parseBackgroundImages();
backgroundImages.reverse().forEach(function(backgroundImage, index, arr) {
switch(backgroundImage.method) {
case "url":
var image = this.images.get(backgroundImage.args[0]);
if (image) {
this.renderBackgroundRepeating(container, bounds, image, arr.length - (index+1), borderData);
} else {
log("Error loading background-image", backgroundImage.args[0]);
}
break;
case "linear-gradient":
case "gradient":
var gradientImage = this.images.get(backgroundImage.value);
if (gradientImage) {
this.renderBackgroundGradient(gradientImage, bounds, borderData);
} else {
log("Error loading background-image", backgroundImage.args[0]);
}
break;
case "none":
break;
default:
log("Unknown background-image type", backgroundImage.args[0]);
}
}, this);
};
Renderer.prototype.renderBackgroundRepeating = function(container, bounds, imageContainer, index, borderData) {
var size = container.parseBackgroundSize(bounds, imageContainer.image, index);
var position = container.parseBackgroundPosition(bounds, imageContainer.image, index, size);
var repeat = container.parseBackgroundRepeat(index);
switch (repeat) {
case "repeat-x":
case "repeat no-repeat":
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + borderData[3], bounds.top + position.top + borderData[0], 99999, size.height, borderData);
break;
case "repeat-y":
case "no-repeat repeat":
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + borderData[0], size.width, 99999, borderData);
break;
case "no-repeat":
this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + position.top + borderData[0], size.width, size.height, borderData);
break;
default:
this.renderBackgroundRepeat(imageContainer, position, size, {top: bounds.top, left: bounds.left}, borderData[3], borderData[0]);
break;
}
};
module.exports = Renderer;
},{"./log":13}],20:[function(_dereq_,module,exports){
var Renderer = _dereq_('../renderer');
var LinearGradientContainer = _dereq_('../lineargradientcontainer');
var log = _dereq_('../log');
function CanvasRenderer(width, height) {
Renderer.apply(this, arguments);
this.canvas = this.options.canvas || this.document.createElement("canvas");
if (!this.options.canvas) {
this.canvas.width = width;
this.canvas.height = height;
}
this.ctx = this.canvas.getContext("2d");
this.taintCtx = this.document.createElement("canvas").getContext("2d");
this.ctx.textBaseline = "bottom";
this.variables = {};
log("Initialized CanvasRenderer with size", width, "x", height);
}
CanvasRenderer.prototype = Object.create(Renderer.prototype);
CanvasRenderer.prototype.setFillStyle = function(fillStyle) {
this.ctx.fillStyle = typeof(fillStyle) === "object" && !!fillStyle.isColor ? fillStyle.toString() : fillStyle;
return this.ctx;
};
CanvasRenderer.prototype.rectangle = function(left, top, width, height, color) {
this.setFillStyle(color).fillRect(left, top, width, height);
};
CanvasRenderer.prototype.circle = function(left, top, size, color) {
this.setFillStyle(color);
this.ctx.beginPath();
this.ctx.arc(left + size / 2, top + size / 2, size / 2, 0, Math.PI*2, true);
this.ctx.closePath();
this.ctx.fill();
};
CanvasRenderer.prototype.circleStroke = function(left, top, size, color, stroke, strokeColor) {
this.circle(left, top, size, color);
this.ctx.strokeStyle = strokeColor.toString();
this.ctx.stroke();
};
CanvasRenderer.prototype.drawShape = function(shape, color) {
this.shape(shape);
this.setFillStyle(color).fill();
};
CanvasRenderer.prototype.taints = function(imageContainer) {
if (imageContainer.tainted === null) {
this.taintCtx.drawImage(imageContainer.image, 0, 0);
try {
this.taintCtx.getImageData(0, 0, 1, 1);
imageContainer.tainted = false;
} catch(e) {
this.taintCtx = document.createElement("canvas").getContext("2d");
imageContainer.tainted = true;
}
}
return imageContainer.tainted;
};
CanvasRenderer.prototype.drawImage = function(imageContainer, sx, sy, sw, sh, dx, dy, dw, dh) {
if (!this.taints(imageContainer) || this.options.allowTaint) {
this.ctx.drawImage(imageContainer.image, sx, sy, sw, sh, dx, dy, dw, dh);
}
};
CanvasRenderer.prototype.clip = function(shapes, callback, context) {
this.ctx.save();
shapes.filter(hasEntries).forEach(function(shape) {
this.shape(shape).clip();
}, this);
callback.call(context);
this.ctx.restore();
};
CanvasRenderer.prototype.shape = function(shape) {
this.ctx.beginPath();
shape.forEach(function(point, index) {
if (point[0] === "rect") {
this.ctx.rect.apply(this.ctx, point.slice(1));
} else {
this.ctx[(index === 0) ? "moveTo" : point[0] + "To" ].apply(this.ctx, point.slice(1));
}
}, this);
this.ctx.closePath();
return this.ctx;
};
CanvasRenderer.prototype.font = function(color, style, variant, weight, size, family) {
this.setFillStyle(color).font = [style, variant, weight, size, family].join(" ").split(",")[0];
};
CanvasRenderer.prototype.fontShadow = function(color, offsetX, offsetY, blur) {
this.setVariable("shadowColor", color.toString())
.setVariable("shadowOffsetY", offsetX)
.setVariable("shadowOffsetX", offsetY)
.setVariable("shadowBlur", blur);
};
CanvasRenderer.prototype.clearShadow = function() {
this.setVariable("shadowColor", "rgba(0,0,0,0)");
};
CanvasRenderer.prototype.setOpacity = function(opacity) {
this.ctx.globalAlpha = opacity;
};
CanvasRenderer.prototype.setTransform = function(transform) {
this.ctx.translate(transform.origin[0], transform.origin[1]);
this.ctx.transform.apply(this.ctx, transform.matrix);
this.ctx.translate(-transform.origin[0], -transform.origin[1]);
};
CanvasRenderer.prototype.setVariable = function(property, value) {
if (this.variables[property] !== value) {
this.variables[property] = this.ctx[property] = value;
}
return this;
};
CanvasRenderer.prototype.text = function(text, left, bottom) {
this.ctx.fillText(text, left, bottom);
};
CanvasRenderer.prototype.backgroundRepeatShape = function(imageContainer, backgroundPosition, size, bounds, left, top, width, height, borderData) {
var shape = [
["line", Math.round(left), Math.round(top)],
["line", Math.round(left + width), Math.round(top)],
["line", Math.round(left + width), Math.round(height + top)],
["line", Math.round(left), Math.round(height + top)]
];
this.clip([shape], function() {
this.renderBackgroundRepeat(imageContainer, backgroundPosition, size, bounds, borderData[3], borderData[0]);
}, this);
};
CanvasRenderer.prototype.renderBackgroundRepeat = function(imageContainer, backgroundPosition, size, bounds, borderLeft, borderTop) {
var offsetX = Math.round(bounds.left + backgroundPosition.left + borderLeft), offsetY = Math.round(bounds.top + backgroundPosition.top + borderTop);
this.setFillStyle(this.ctx.createPattern(this.resizeImage(imageContainer, size), "repeat"));
this.ctx.translate(offsetX, offsetY);
this.ctx.fill();
this.ctx.translate(-offsetX, -offsetY);
};
CanvasRenderer.prototype.renderBackgroundGradient = function(gradientImage, bounds) {
if (gradientImage instanceof LinearGradientContainer) {
var gradient = this.ctx.createLinearGradient(
bounds.left + bounds.width * gradientImage.x0,
bounds.top + bounds.height * gradientImage.y0,
bounds.left + bounds.width * gradientImage.x1,
bounds.top + bounds.height * gradientImage.y1);
gradientImage.colorStops.forEach(function(colorStop) {
gradient.addColorStop(colorStop.stop, colorStop.color.toString());
});
this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, gradient);
}
};
CanvasRenderer.prototype.resizeImage = function(imageContainer, size) {
var image = imageContainer.image;
if(image.width === size.width && image.height === size.height) {
return image;
}
var ctx, canvas = document.createElement('canvas');
canvas.width = size.width;
canvas.height = size.height;
ctx = canvas.getContext("2d");
ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, size.width, size.height );
return canvas;
};
function hasEntries(array) {
return array.length > 0;
}
module.exports = CanvasRenderer;
},{"../lineargradientcontainer":12,"../log":13,"../renderer":19}],21:[function(_dereq_,module,exports){
var NodeContainer = _dereq_('./nodecontainer');
function StackingContext(hasOwnStacking, opacity, element, parent) {
NodeContainer.call(this, element, parent);
this.ownStacking = hasOwnStacking;
this.contexts = [];
this.children = [];
this.opacity = (this.parent ? this.parent.stack.opacity : 1) * opacity;
}
StackingContext.prototype = Object.create(NodeContainer.prototype);
StackingContext.prototype.getParentStack = function(context) {
var parentStack = (this.parent) ? this.parent.stack : null;
return parentStack ? (parentStack.ownStacking ? parentStack : parentStack.getParentStack(context)) : context.stack;
};
module.exports = StackingContext;
},{"./nodecontainer":14}],22:[function(_dereq_,module,exports){
function Support(document) {
this.rangeBounds = this.testRangeBounds(document);
this.cors = this.testCORS();
this.svg = this.testSVG();
}
Support.prototype.testRangeBounds = function(document) {
var range, testElement, rangeBounds, rangeHeight, support = false;
if (document.createRange) {
range = document.createRange();
if (range.getBoundingClientRect) {
testElement = document.createElement('boundtest');
testElement.style.height = "123px";
testElement.style.display = "block";
document.body.appendChild(testElement);
range.selectNode(testElement);
rangeBounds = range.getBoundingClientRect();
rangeHeight = rangeBounds.height;
if (rangeHeight === 123) {
support = true;
}
document.body.removeChild(testElement);
}
}
return support;
};
Support.prototype.testCORS = function() {
return typeof((new Image()).crossOrigin) !== "undefined";
};
Support.prototype.testSVG = function() {
var img = new Image();
var canvas = document.createElement("canvas");
var ctx = canvas.getContext("2d");
img.src = "data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'></svg>";
try {
ctx.drawImage(img, 0, 0);
canvas.toDataURL();
} catch(e) {
return false;
}
return true;
};
module.exports = Support;
},{}],23:[function(_dereq_,module,exports){
var XHR = _dereq_('./xhr');
var decode64 = _dereq_('./utils').decode64;
function SVGContainer(src) {
this.src = src;
this.image = null;
var self = this;
this.promise = this.hasFabric().then(function() {
return (self.isInline(src) ? Promise.resolve(self.inlineFormatting(src)) : XHR(src));
}).then(function(svg) {
return new Promise(function(resolve) {
window.html2canvas.svg.fabric.loadSVGFromString(svg, self.createCanvas.call(self, resolve));
});
});
}
SVGContainer.prototype.hasFabric = function() {
return !window.html2canvas.svg || !window.html2canvas.svg.fabric ? Promise.reject(new Error("html2canvas.svg.js is not loaded, cannot render svg")) : Promise.resolve();
};
SVGContainer.prototype.inlineFormatting = function(src) {
return (/^data:image\/svg\+xml;base64,/.test(src)) ? this.decode64(this.removeContentType(src)) : this.removeContentType(src);
};
SVGContainer.prototype.removeContentType = function(src) {
return src.replace(/^data:image\/svg\+xml(;base64)?,/,'');
};
SVGContainer.prototype.isInline = function(src) {
return (/^data:image\/svg\+xml/i.test(src));
};
SVGContainer.prototype.createCanvas = function(resolve) {
var self = this;
return function (objects, options) {
var canvas = new window.html2canvas.svg.fabric.StaticCanvas('c');
self.image = canvas.lowerCanvasEl;
canvas
.setWidth(options.width)
.setHeight(options.height)
.add(window.html2canvas.svg.fabric.util.groupSVGElements(objects, options))
.renderAll();
resolve(canvas.lowerCanvasEl);
};
};
SVGContainer.prototype.decode64 = function(str) {
return (typeof(window.atob) === "function") ? window.atob(str) : decode64(str);
};
module.exports = SVGContainer;
},{"./utils":26,"./xhr":28}],24:[function(_dereq_,module,exports){
var SVGContainer = _dereq_('./svgcontainer');
function SVGNodeContainer(node, _native) {
this.src = node;
this.image = null;
var self = this;
this.promise = _native ? new Promise(function(resolve, reject) {
self.image = new Image();
self.image.onload = resolve;
self.image.onerror = reject;
self.image.src = "data:image/svg+xml," + (new XMLSerializer()).serializeToString(node);
if (self.image.complete === true) {
resolve(self.image);
}
}) : this.hasFabric().then(function() {
return new Promise(function(resolve) {
window.html2canvas.svg.fabric.parseSVGDocument(node, self.createCanvas.call(self, resolve));
});
});
}
SVGNodeContainer.prototype = Object.create(SVGContainer.prototype);
module.exports = SVGNodeContainer;
},{"./svgcontainer":23}],25:[function(_dereq_,module,exports){
var NodeContainer = _dereq_('./nodecontainer');
function TextContainer(node, parent) {
NodeContainer.call(this, node, parent);
}
TextContainer.prototype = Object.create(NodeContainer.prototype);
TextContainer.prototype.applyTextTransform = function() {
this.node.data = this.transform(this.parent.css("textTransform"));
};
TextContainer.prototype.transform = function(transform) {
var text = this.node.data;
switch(transform){
case "lowercase":
return text.toLowerCase();
case "capitalize":
return text.replace(/(^|\s|:|-|\(|\))([a-z])/g, capitalize);
case "uppercase":
return text.toUpperCase();
default:
return text;
}
};
function capitalize(m, p1, p2) {
if (m.length > 0) {
return p1 + p2.toUpperCase();
}
}
module.exports = TextContainer;
},{"./nodecontainer":14}],26:[function(_dereq_,module,exports){
exports.smallImage = function smallImage() {
return "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
};
exports.bind = function(callback, context) {
return function() {
return callback.apply(context, arguments);
};
};
/*
* base64-arraybuffer
* https://github.com/niklasvh/base64-arraybuffer
*
* Copyright (c) 2012 Niklas von Hertzen
* Licensed under the MIT license.
*/
exports.decode64 = function(base64) {
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var len = base64.length, i, encoded1, encoded2, encoded3, encoded4, byte1, byte2, byte3;
var output = "";
for (i = 0; i < len; i+=4) {
encoded1 = chars.indexOf(base64[i]);
encoded2 = chars.indexOf(base64[i+1]);
encoded3 = chars.indexOf(base64[i+2]);
encoded4 = chars.indexOf(base64[i+3]);
byte1 = (encoded1 << 2) | (encoded2 >> 4);
byte2 = ((encoded2 & 15) << 4) | (encoded3 >> 2);
byte3 = ((encoded3 & 3) << 6) | encoded4;
if (encoded3 === 64) {
output += String.fromCharCode(byte1);
} else if (encoded4 === 64 || encoded4 === -1) {
output += String.fromCharCode(byte1, byte2);
} else{
output += String.fromCharCode(byte1, byte2, byte3);
}
}
return output;
};
exports.getBounds = function(node) {
if (node.getBoundingClientRect) {
var clientRect = node.getBoundingClientRect();
var width = node.offsetWidth == null ? clientRect.width : node.offsetWidth;
return {
top: clientRect.top,
bottom: clientRect.bottom || (clientRect.top + clientRect.height),
right: clientRect.left + width,
left: clientRect.left,
width: width,
height: node.offsetHeight == null ? clientRect.height : node.offsetHeight
};
}
return {};
};
exports.offsetBounds = function(node) {
var parent = node.offsetParent ? exports.offsetBounds(node.offsetParent) : {top: 0, left: 0};
return {
top: node.offsetTop + parent.top,
bottom: node.offsetTop + node.offsetHeight + parent.top,
right: node.offsetLeft + parent.left + node.offsetWidth,
left: node.offsetLeft + parent.left,
width: node.offsetWidth,
height: node.offsetHeight
};
};
exports.parseBackgrounds = function(backgroundImage) {
var whitespace = ' \r\n\t',
method, definition, prefix, prefix_i, block, results = [],
mode = 0, numParen = 0, quote, args;
var appendResult = function() {
if(method) {
if (definition.substr(0, 1) === '"') {
definition = definition.substr(1, definition.length - 2);
}
if (definition) {
args.push(definition);
}
if (method.substr(0, 1) === '-' && (prefix_i = method.indexOf('-', 1 ) + 1) > 0) {
prefix = method.substr(0, prefix_i);
method = method.substr(prefix_i);
}
results.push({
prefix: prefix,
method: method.toLowerCase(),
value: block,
args: args,
image: null
});
}
args = [];
method = prefix = definition = block = '';
};
args = [];
method = prefix = definition = block = '';
backgroundImage.split("").forEach(function(c) {
if (mode === 0 && whitespace.indexOf(c) > -1) {
return;
}
switch(c) {
case '"':
if(!quote) {
quote = c;
} else if(quote === c) {
quote = null;
}
break;
case '(':
if(quote) {
break;
} else if(mode === 0) {
mode = 1;
block += c;
return;
} else {
numParen++;
}
break;
case ')':
if (quote) {
break;
} else if(mode === 1) {
if(numParen === 0) {
mode = 0;
block += c;
appendResult();
return;
} else {
numParen--;
}
}
break;
case ',':
if (quote) {
break;
} else if(mode === 0) {
appendResult();
return;
} else if (mode === 1) {
if (numParen === 0 && !method.match(/^url$/i)) {
args.push(definition);
definition = '';
block += c;
return;
}
}
break;
}
block += c;
if (mode === 0) {
method += c;
} else {
definition += c;
}
});
appendResult();
return results;
};
},{}],27:[function(_dereq_,module,exports){
var GradientContainer = _dereq_('./gradientcontainer');
function WebkitGradientContainer(imageData) {
GradientContainer.apply(this, arguments);
this.type = imageData.args[0] === "linear" ? GradientContainer.TYPES.LINEAR : GradientContainer.TYPES.RADIAL;
}
WebkitGradientContainer.prototype = Object.create(GradientContainer.prototype);
module.exports = WebkitGradientContainer;
},{"./gradientcontainer":9}],28:[function(_dereq_,module,exports){
function XHR(url) {
return new Promise(function(resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.onload = function() {
if (xhr.status === 200) {
resolve(xhr.responseText);
} else {
reject(new Error(xhr.statusText));
}
};
xhr.onerror = function() {
reject(new Error("Network Error"));
};
xhr.send();
});
}
module.exports = XHR;
},{}]},{},[4])(4)
});
gitextract_b39mv3ny/
├── README.md
├── demo.html
└── static/
└── js/
├── canvas2image.js
└── html2canvas.js
SYMBOL INDEX (105 symbols across 2 files)
FILE: static/js/canvas2image.js
function scaleCanvas (line 23) | function scaleCanvas (canvas, width, height) {
function getDataURL (line 41) | function getDataURL (canvas, type, width, height) {
function saveFile (line 46) | function saveFile (strData) {
function genImage (line 50) | function genImage(strData) {
function fixType (line 55) | function fixType (type) {
function encodeData (line 60) | function encodeData (data) {
function getImageData (line 73) | function getImageData (canvas) {
function makeURI (line 78) | function makeURI (strData, type) {
FILE: static/js/html2canvas.js
function s (line 8) | function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&re...
function error (line 70) | function error(type) {
function map (line 82) | function map(array, fn) {
function mapDomain (line 99) | function mapDomain(string, fn) {
function ucs2decode (line 116) | function ucs2decode(string) {
function ucs2encode (line 150) | function ucs2encode(array) {
function basicToDigit (line 172) | function basicToDigit(codePoint) {
function digitToBasic (line 196) | function digitToBasic(digit, flag) {
function adapt (line 207) | function adapt(delta, numPoints, firstTime) {
function decode (line 224) | function decode(input) {
function encode (line 325) | function encode(input) {
function toUnicode (line 442) | function toUnicode(domain) {
function toASCII (line 458) | function toASCII(domain) {
function restoreOwnerScroll (line 522) | function restoreOwnerScroll(ownerDocument, x, y) {
function cloneCanvasContents (line 528) | function cloneCanvasContents(canvas, clonedCanvas) {
function cloneNode (line 540) | function cloneNode(node, javascriptEnabled) {
function initNode (line 564) | function initNode(node) {
function Color (line 628) | function Color(value) {
function html2canvas (line 914) | function html2canvas(nodeList, options) {
function renderDocument (line 971) | function renderDocument(document, options, windowWidth, windowHeight, ht...
function renderWindow (line 987) | function renderWindow(node, container, options, windowWidth, windowHeigh...
function cleanupContainer (line 1023) | function cleanupContainer(container, options) {
function crop (line 1030) | function crop(canvas, bounds) {
function documentWidth (line 1047) | function documentWidth (doc) {
function documentHeight (line 1055) | function documentHeight (doc) {
function absoluteUrl (line 1063) | function absoluteUrl(url) {
function DummyImageContainer (line 1074) | function DummyImageContainer(src) {
function Font (line 1097) | function Font(family, size) {
function FontMetrics (line 1151) | function FontMetrics() {
function FrameContainer (line 1169) | function FrameContainer(container, sameOrigin, options) {
function GradientContainer (line 1198) | function GradientContainer(imageData) {
function ImageContainer (line 1221) | function ImageContainer(src, cors) {
function ImageLoader (line 1253) | function ImageLoader(options, support) {
function LinearGradientContainer (line 1404) | function LinearGradientContainer(imageData) {
function NodeContainer (line 1521) | function NodeContainer(node, parent) {
function selectionValue (line 1780) | function selectionValue(node) {
function parseMatrix (line 1785) | function parseMatrix(match) {
function isPercentage (line 1798) | function isPercentage(value) {
function removePx (line 1802) | function removePx(str) {
function asFloat (line 1806) | function asFloat(str) {
function NodeParser (line 1827) | function NodeParser(element, renderer, support, imageLoader, options) {
function hasParentClip (line 1911) | function hasParentClip(container) {
function toCamelCase (line 1962) | function toCamelCase(str) {
function ClearTransform (line 2075) | function ClearTransform() {}
function calculateBorders (line 2325) | function calculateBorders(borders, nodeBounds, borderPoints, radius) {
function getCurvePoints (line 2411) | function getCurvePoints(x, y, r1, r2) {
function calculateCurvePoints (line 2425) | function calculateCurvePoints(bounds, borderRadius, borders) {
function bezierCurve (line 2457) | function bezierCurve(start, startControl, endControl, end) {
function drawSide (line 2488) | function drawSide(borderData, radius1, radius2, outer1, inner1, outer2, ...
function parseCorner (line 2518) | function parseCorner(borderArgs, radius1, radius2, corner1, corner2, x, ...
function negativeZIndex (line 2532) | function negativeZIndex(container) {
function positiveZIndex (line 2536) | function positiveZIndex(container) {
function zIndex0 (line 2540) | function zIndex0(container) {
function inlineLevel (line 2544) | function inlineLevel(container) {
function isStackingContext (line 2548) | function isStackingContext(container) {
function hasText (line 2552) | function hasText(container) {
function noLetterSpacing (line 2556) | function noLetterSpacing(container) {
function getBorderRadiusData (line 2560) | function getBorderRadiusData(container) {
function renderableNode (line 2571) | function renderableNode(node) {
function isPositionedForStacking (line 2575) | function isPositionedForStacking(container) {
function isPositioned (line 2581) | function isPositioned(container) {
function isFloating (line 2585) | function isFloating(container) {
function isInlineBlock (line 2589) | function isInlineBlock(container) {
function not (line 2593) | function not(callback) {
function isElement (line 2600) | function isElement(container) {
function isPseudoElement (line 2604) | function isPseudoElement(container) {
function isTextNode (line 2608) | function isTextNode(container) {
function zIndexSort (line 2612) | function zIndexSort(contexts) {
function hasOpacity (line 2618) | function hasOpacity(container) {
function asInt (line 2622) | function asInt(value) {
function getWidth (line 2626) | function getWidth(border) {
function nonIgnoredElement (line 2630) | function nonIgnoredElement(nodeContainer) {
function flatten (line 2634) | function flatten(arrays) {
function stripQuotes (line 2638) | function stripQuotes(content) {
function getWords (line 2643) | function getWords(characters) {
function isWordBoundary (line 2667) | function isWordBoundary(characterCode) {
function hasUnicode (line 2677) | function hasUnicode(string) {
function Proxy (line 2690) | function Proxy(src, proxyUrl, document) {
function ProxyURL (line 2704) | function ProxyURL(src, proxyUrl, document) {
function jsonp (line 2713) | function jsonp(document, url, callback) {
function createCallback (line 2733) | function createCallback(useCORS) {
function createProxyUrl (line 2737) | function createProxyUrl(proxyUrl, src, callback) {
function documentFromHTML (line 2741) | function documentFromHTML(src) {
function loadUrlDocument (line 2770) | function loadUrlDocument(src, proxy, document, width, height, options) {
function ProxyImageContainer (line 2783) | function ProxyImageContainer(src, proxy) {
function PseudoElementContainer (line 2806) | function PseudoElementContainer(node, parent, type) {
function Renderer (line 2846) | function Renderer(width, height, images, options, document) {
function CanvasRenderer (line 2958) | function CanvasRenderer(width, height) {
function hasEntries (line 3130) | function hasEntries(array) {
function StackingContext (line 3139) | function StackingContext(hasOwnStacking, opacity, element, parent) {
function Support (line 3157) | function Support(document) {
function SVGContainer (line 3213) | function SVGContainer(src) {
function SVGNodeContainer (line 3266) | function SVGNodeContainer(node, _native) {
function TextContainer (line 3293) | function TextContainer(node, parent) {
function capitalize (line 3317) | function capitalize(m, p1, p2) {
function WebkitGradientContainer (line 3499) | function WebkitGradientContainer(imageData) {
function XHR (line 3509) | function XHR(url) {
Condensed preview — 4 files, each showing path, character count, and a content snippet. Download the .json file or copy for the full structured content (175K chars).
[
{
"path": "README.md",
"chars": 8568,
"preview": "**html2canvas html截图插件图片放大清晰度解决方案，支持任意放大倍数，解决原插件图片偏移问题**\n----------------------------------------------------\n\nAuthor: A"
},
{
"path": "demo.html",
"chars": 5043,
"preview": "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\"\n content=\"width=de"
},
{
"path": "static/js/canvas2image.js",
"chars": 8791,
"preview": "/**\n * covert canvas to image\n * and save the image file\n */\n\nvar Canvas2Image = function () {\n\n // check if support st"
},
{
"path": "static/js/html2canvas.js",
"chars": 144642,
"preview": "/*\n html2canvas 0.5.0-beta3 <http://html2canvas.hertzen.com>\n Copyright (c) 2016 Niklas von Hertzen\n\n Released under Li"
}
]
About this extraction
This page contains the full source code of the omwteam/html2canvas GitHub repository, extracted and formatted as plain text for AI agents and large language models (LLMs). The extraction includes 4 files (163.1 KB), approximately 38.6k tokens, and a symbol index with 105 extracted functions, classes, methods, constants, and types. Use this with OpenClaw, Claude, ChatGPT, Cursor, Windsurf, or any other AI tool that accepts text input. You can copy the full output to your clipboard or download it as a .txt file.
Extracted by GitExtract — free GitHub repo to text converter for AI. Built by Nikandr Surkov.