Repository: fluttercandies/flutter-interactive-chart
Branch: master
Commit: fde2923f1d45
Files: 25
Total size: 86.1 KB
Directory structure:
gitextract_944_aqv9/
├── .github/
│ └── workflows/
│ ├── publish.yml
│ ├── publishable.yml
│ └── runnable.yml
├── .gitignore
├── .metadata
├── CHANGELOG.md
├── CODEOWNERS
├── LICENSE
├── README.md
├── example/
│ ├── .gitignore
│ ├── .metadata
│ ├── README.md
│ ├── analysis_options.yaml
│ ├── lib/
│ │ ├── main.dart
│ │ └── mock_data.dart
│ ├── pubspec.yaml
│ └── web/
│ ├── index.html
│ └── manifest.json
├── lib/
│ ├── interactive_chart.dart
│ └── src/
│ ├── candle_data.dart
│ ├── chart_painter.dart
│ ├── chart_style.dart
│ ├── interactive_chart.dart
│ └── painter_params.dart
└── pubspec.yaml
================================================
FILE CONTENTS
================================================
================================================
FILE: .github/workflows/publish.yml
================================================
name: Publish
on:
release:
types: [ published ]
workflow_dispatch:
jobs:
publish:
runs-on: ubuntu-latest
steps:
- name: Checkout repo
uses: actions/checkout@v4
- name: Publish
uses: k-paxian/dart-package-publisher@master
with:
credentialJson: ${{ secrets.CREDENTIAL_JSON }}
flutter: true
skipTests: true
================================================
FILE: .github/workflows/publishable.yml
================================================
name: Publishable
on:
push:
branches:
- main
- master
pull_request:
branches:
- main
- master
paths:
- "**.md"
- "**.yaml"
- "**.yml"
jobs:
publish-dry-run:
name: Publish dry-run with packages
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: k-paxian/dart-package-publisher@master
with:
credentialJson: 'MockCredentialJson'
flutter: true
dryRunOnly: true
skipTests: true
================================================
FILE: .github/workflows/runnable.yml
================================================
name: Runnable (stable)
on:
push:
branches:
- main
- master
paths-ignore:
- "**.md"
pull_request:
branches:
- main
- master
paths-ignore:
- "**.md"
jobs:
run:
name: Analyze on ${{ matrix.os }}
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ macos-latest ]
steps:
- uses: actions/checkout@v4
- uses: subosito/flutter-action@v2
with:
channel: 'stable'
- name: Log Dart/Flutter versions
run: |
dart --version
flutter --version
- name: Prepare dependencies
run: flutter pub get
- name: Check Dart code formatting
run: dart format lib -o none --set-exit-if-changed
- name: Analyze Dart code
run: flutter analyze lib
- run: flutter pub get
- name: Build Example (Web)
run: cd example; flutter build web
================================================
FILE: .gitignore
================================================
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
build/
pubspec.lock
# Android related
**/android/**/gradle-wrapper.jar
**/android/.gradle
**/android/captures/
**/android/gradlew
**/android/gradlew.bat
**/android/local.properties
**/android/**/GeneratedPluginRegistrant.java
# iOS/XCode related
**/ios/**/*.mode1v3
**/ios/**/*.mode2v3
**/ios/**/*.moved-aside
**/ios/**/*.pbxuser
**/ios/**/*.perspectivev3
**/ios/**/*sync/
**/ios/**/.sconsign.dblite
**/ios/**/.tags*
**/ios/**/.vagrant/
**/ios/**/DerivedData/
**/ios/**/Icon?
**/ios/**/Pods/
**/ios/**/.symlinks/
**/ios/**/profile
**/ios/**/xcuserdata
**/ios/.generated/
**/ios/Flutter/App.framework
**/ios/Flutter/Flutter.framework
**/ios/Flutter/Flutter.podspec
**/ios/Flutter/Generated.xcconfig
**/ios/Flutter/ephemeral
**/ios/Flutter/app.flx
**/ios/Flutter/app.zip
**/ios/Flutter/flutter_assets/
**/ios/Flutter/flutter_export_environment.sh
**/ios/ServiceDefinitions.json
**/ios/Runner/GeneratedPluginRegistrant.*
# Exceptions to above rules.
!**/ios/**/default.mode1v3
!**/ios/**/default.mode2v3
!**/ios/**/default.pbxuser
!**/ios/**/default.perspectivev3
================================================
FILE: .metadata
================================================
# This file tracks properties of this Flutter project.
# Used by Flutter tool to assess capabilities and perform upgrades etc.
#
# This file should be version controlled and should not be manually edited.
version:
revision: 02c026b03cd31dd3f867e5faeb7e104cce174c5f
channel: stable
project_type: package
================================================
FILE: CHANGELOG.md
================================================
## 0.3.6
* Update dependency: intl to ^0.20.0.
## 0.3.5
* Update dependency: intl to ^0.19.0.
## 0.3.4
* Fix a potential crash if volume numbers are null.
## 0.3.3
* Fix an issue where `onTap` event was not firing. [(Issue #8)](https://github.com/fluttercandies/flutter-interactive-chart/issues/8)
## 0.3.2
* Add `initialVisibleCandleCount` parameter for setting a default zoom level. [(Issue #6)](https://github.com/fluttercandies/flutter-interactive-chart/issues/6)
## 0.3.1
* Allow web and desktop users to zoom the chart with mouse scroll wheel. [(Issue #4)](https://github.com/fluttercandies/flutter-interactive-chart/issues/4)
## 0.3.0
* BREAKING: Add support for multiple trend lines. [(Issue #2)](https://github.com/fluttercandies/flutter-interactive-chart/issues/2)
* The old `trend` property is changed to `trends`, to support multiple data points per `CandleData`.
* The old `trendLineColor` property is changed to `trendLineStyles`.
* The `CandleData.computeMA` helper function no longer modifies data in-place. To migrate,
change `CandleData.computeMA(data)` to the following two lines:
`final ma = CandleData.computeMA(data); ` and
`for (int i = 0; i < data.length; i++) { data[i].trends = [ma[i]]; }`.
* Update example project to reflect above changes.
## 0.2.1
* Add `onTap` event and `onCandleResize` event.
* Allow `overlayInfo` to return an empty object.
* Update example project.
## 0.2.0
* BREAKING: Organize folder structures, now you only need to
import `package:interactive_chart/interactive_chart.dart`.
* BREAKING: Change CandleData `timestamp` to milliseconds, you might need to multiply your data by
1000 when creating CandleData objects.
* Fix an issue where zooming was occasionally not smooth.
* Fix an issue where overlay panel was occasionally clipped.
## 0.1.1
* Improve performance.
* Allow `high` and `low` prices to be optional.
* Align date/time labels towards vertical bottom.
## 0.1.0
* Initial Open Source release.
================================================
FILE: CODEOWNERS
================================================
* @h65wang
================================================
FILE: LICENSE
================================================
MIT License
Copyright (c) 2021 h65wang
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
================================================
FILE: README.md
================================================
# interactive_chart
A candlestick chart that supports pinch-to-zoom and panning.
## Dark mode
## Pan
## Pinch-to-zoom
## Overlay
## Customize styles
================================================
FILE: example/.gitignore
================================================
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/
pubspec.lock
# Web related
lib/generated_plugin_registrant.dart
# Symbolication related
app.*.symbols
# Obfuscation related
app.*.map.json
# Android Studio will place build artifacts here
/android/app/debug
/android/app/profile
/android/app/release
================================================
FILE: example/.metadata
================================================
# This file tracks properties of this Flutter project.
# Used by Flutter tool to assess capabilities and perform upgrades etc.
#
# This file should be version controlled and should not be manually edited.
version:
revision: "8defaa71a77c16e8547abdbfad2053ce3a6e2d5b"
channel: "stable"
project_type: app
# Tracks metadata for the flutter migrate command
migration:
platforms:
- platform: root
create_revision: 8defaa71a77c16e8547abdbfad2053ce3a6e2d5b
base_revision: 8defaa71a77c16e8547abdbfad2053ce3a6e2d5b
- platform: web
create_revision: 8defaa71a77c16e8547abdbfad2053ce3a6e2d5b
base_revision: 8defaa71a77c16e8547abdbfad2053ce3a6e2d5b
# User provided section
# List of Local paths (relative to this file) that should be
# ignored by the migrate tool.
#
# Files that are not part of the templates will be ignored by default.
unmanaged_files:
- 'lib/main.dart'
- 'ios/Runner.xcodeproj/project.pbxproj'
================================================
FILE: example/README.md
================================================
# example
A new Flutter project.
## Getting Started
This project is a starting point for a Flutter application.
A few resources to get you started if this is your first Flutter project:
- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
For help getting started with Flutter, view our
[online documentation](https://flutter.dev/docs), which offers tutorials,
samples, guidance on mobile development, and a full API reference.
================================================
FILE: example/analysis_options.yaml
================================================
# This file configures the analyzer, which statically analyzes Dart code to
# check for errors, warnings, and lints.
#
# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
# invoked from the command line by running `flutter analyze`.
# The following line activates a set of recommended lints for Flutter apps,
# packages, and plugins designed to encourage good coding practices.
include: package:flutter_lints/flutter.yaml
linter:
# The lint rules applied to this project can be customized in the
# section below to disable rules from the `package:flutter_lints/flutter.yaml`
# included above or to enable additional rules. A list of all available lints
# and their documentation is published at https://dart.dev/lints.
#
# Instead of disabling a lint rule for the entire project in the
# section below, it can also be suppressed for a single line of code
# or a specific dart file by using the `// ignore: name_of_lint` and
# `// ignore_for_file: name_of_lint` syntax on the line or in the file
# producing the lint.
rules:
# avoid_print: false # Uncomment to disable the `avoid_print` rule
# prefer_single_quotes: true # Uncomment to enable the `prefer_single_quotes` rule
# Additional information about this file can be found at
# https://dart.dev/guides/language/analysis-options
================================================
FILE: example/lib/main.dart
================================================
import 'package:flutter/material.dart';
import 'package:interactive_chart/interactive_chart.dart';
import 'mock_data.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final List<CandleData> _data = MockDataTesla.candles;
bool _darkMode = true;
bool _showAverage = false;
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
brightness: _darkMode ? Brightness.dark : Brightness.light,
),
home: Scaffold(
appBar: AppBar(
title: const Text("Interactive Chart Demo"),
actions: [
IconButton(
icon: Icon(_darkMode ? Icons.dark_mode : Icons.light_mode),
onPressed: () => setState(() => _darkMode = !_darkMode),
),
IconButton(
icon: Icon(
_showAverage ? Icons.show_chart : Icons.bar_chart_outlined,
),
onPressed: () {
setState(() => _showAverage = !_showAverage);
if (_showAverage) {
_computeTrendLines();
} else {
_removeTrendLines();
}
},
),
],
),
body: SafeArea(
minimum: const EdgeInsets.all(24.0),
child: InteractiveChart(
/** Only [candles] is required */
candles: _data,
/** Uncomment the following for examples on optional parameters */
/** Example styling */
// style: ChartStyle(
// priceGainColor: Colors.teal[200]!,
// priceLossColor: Colors.blueGrey,
// volumeColor: Colors.teal.withOpacity(0.8),
// trendLineStyles: [
// Paint()
// ..strokeWidth = 2.0
// ..strokeCap = StrokeCap.round
// ..color = Colors.deepOrange,
// Paint()
// ..strokeWidth = 4.0
// ..strokeCap = StrokeCap.round
// ..color = Colors.orange,
// ],
// priceGridLineColor: Colors.blue[200]!,
// priceLabelStyle: TextStyle(color: Colors.blue[200]),
// timeLabelStyle: TextStyle(color: Colors.blue[200]),
// selectionHighlightColor: Colors.red.withOpacity(0.2),
// overlayBackgroundColor: Colors.red[900]!.withOpacity(0.6),
// overlayTextStyle: TextStyle(color: Colors.red[100]),
// timeLabelHeight: 32,
// volumeHeightFactor: 0.2, // volume area is 20% of total height
// ),
/** Customize axis labels */
// timeLabel: (timestamp, visibleDataCount) => "📅",
// priceLabel: (price) => "${price.round()} 💎",
/** Customize overlay (tap and hold to see it)
** Or return an empty object to disable overlay info. */
// overlayInfo: (candle) => {
// "💎": "🤚 ",
// "Hi": "${candle.high?.toStringAsFixed(2)}",
// "Lo": "${candle.low?.toStringAsFixed(2)}",
// },
/** Callbacks */
// onTap: (candle) => print("user tapped on $candle"),
// onCandleResize: (width) => print("each candle is $width wide"),
),
),
),
);
}
void _computeTrendLines() {
final ma7 = CandleData.computeMA(_data, 7);
final ma30 = CandleData.computeMA(_data, 30);
final ma90 = CandleData.computeMA(_data, 90);
for (int i = 0; i < _data.length; i++) {
_data[i].trends = [ma7[i], ma30[i], ma90[i]];
}
}
void _removeTrendLines() {
for (final data in _data) {
data.trends = [];
}
}
}
================================================
FILE: example/lib/mock_data.dart
================================================
import 'package:interactive_chart/interactive_chart.dart';
class MockDataTesla {
static const List<dynamic> _rawData = [
// (Price data for Tesla Inc, taken from Yahoo Finance)
// timestamp, open, high, low, close, volume
[1555939800, 53.80, 53.94, 52.50, 52.55, 60735500],
[1556026200, 52.03, 53.12, 51.15, 52.78, 54719500],
[1556112600, 52.77, 53.06, 51.60, 51.73, 53637500],
[1556199000, 51.00, 51.80, 49.21, 49.53, 109247000],
[1556285400, 49.30, 49.34, 46.23, 47.03, 111803500],
[1556544600, 47.17, 48.80, 46.43, 48.29, 83572500],
[1556631000, 48.41, 48.84, 47.40, 47.74, 47323000],
[1556717400, 47.77, 48.00, 46.30, 46.80, 53522000],
[1556803800, 49.10, 49.43, 47.54, 48.82, 90796500],
[1556890200, 48.77, 51.32, 48.70, 51.01, 118534000],
[1557149400, 50.00, 51.67, 49.70, 51.07, 54169500],
[1557235800, 51.36, 51.44, 49.02, 49.41, 50657000],
[1557322200, 49.39, 50.12, 48.84, 48.97, 30882000],
[1557408600, 48.40, 48.74, 47.39, 48.40, 33557000],
[1557495000, 47.95, 48.40, 47.20, 47.90, 35041500],
[1557754200, 46.40, 46.49, 44.90, 45.40, 54174000],
[1557840600, 45.86, 46.90, 45.60, 46.46, 36262000],
[1557927000, 45.86, 46.49, 45.05, 46.39, 36480000],
[1558013400, 45.90, 46.20, 45.30, 45.67, 37416500],
[1558099800, 44.39, 44.45, 41.78, 42.21, 88933500],
[1558359000, 40.56, 41.20, 39.05, 41.07, 102631000],
[1558445400, 39.55, 41.48, 39.21, 41.02, 90019500],
[1558531800, 39.82, 40.79, 38.36, 38.55, 93426000],
[1558618200, 38.87, 39.89, 37.24, 39.10, 132735500],
[1558704600, 39.97, 40.00, 37.75, 38.13, 70683000],
[1559050200, 38.24, 39.00, 37.57, 37.74, 51564500],
[1559136600, 37.42, 38.48, 37.01, 37.97, 59843000],
[1559223000, 37.75, 38.45, 37.40, 37.64, 39632500],
[1559309400, 37.02, 37.98, 36.82, 37.03, 52033500],
[1559568600, 37.10, 37.34, 35.40, 35.79, 65322000],
[1559655000, 36.22, 38.80, 35.92, 38.72, 69037500],
[1559741400, 39.74, 40.26, 38.37, 39.32, 67554000],
[1559827800, 40.89, 42.20, 40.36, 41.19, 101211000],
[1559914200, 41.00, 42.17, 40.70, 40.90, 80017500],
[1560173400, 42.05, 43.39, 41.80, 42.58, 52925000],
[1560259800, 43.83, 44.18, 42.70, 43.42, 58267500],
[1560346200, 44.59, 44.68, 41.80, 41.85, 75987500],
[1560432600, 42.08, 42.98, 41.50, 42.78, 40841500],
[1560519000, 42.25, 43.33, 42.08, 42.98, 37167000],
[1560778200, 43.10, 45.40, 42.85, 45.01, 61584000],
[1560864600, 45.74, 46.95, 44.51, 44.95, 63579000],
[1560951000, 45.02, 45.55, 44.21, 45.29, 32875500],
[1561037400, 44.60, 45.38, 43.27, 43.92, 59317500],
[1561123800, 43.24, 44.44, 43.10, 44.37, 41010500],
[1561383000, 44.65, 45.17, 44.20, 44.73, 28754000],
[1561469400, 44.88, 45.07, 43.90, 43.95, 30910500],
[1561555800, 44.06, 45.45, 43.62, 43.85, 42536000],
[1561642200, 43.89, 44.58, 43.47, 44.57, 31698500],
[1561728600, 44.20, 45.03, 44.16, 44.69, 34257000],
[1561987800, 46.04, 46.62, 45.26, 45.43, 41067000],
[1562074200, 45.78, 45.83, 44.44, 44.91, 46295000],
[1562160600, 47.88, 48.31, 46.90, 46.98, 71005500],
[1562333400, 46.91, 47.09, 46.16, 46.62, 35328500],
[1562592600, 46.25, 46.45, 45.73, 46.07, 29402500],
[1562679000, 45.79, 46.20, 45.46, 46.01, 30954000],
[1562765400, 46.83, 47.79, 46.63, 47.78, 45728500],
[1562851800, 47.63, 48.30, 47.16, 47.72, 37572000],
[1562938200, 47.95, 49.08, 47.94, 49.02, 46002500],
[1563197400, 49.60, 50.88, 48.97, 50.70, 55000500],
[1563283800, 49.86, 50.71, 49.59, 50.48, 40745000],
[1563370200, 51.13, 51.66, 50.67, 50.97, 48823500],
[1563456600, 51.01, 51.15, 50.38, 50.71, 23793000],
[1563543000, 51.14, 51.99, 50.92, 51.64, 35242000],
[1563802200, 51.75, 52.43, 50.84, 51.14, 34212000],
[1563888600, 51.34, 52.10, 50.90, 52.03, 25115500],
[1563975000, 51.83, 53.21, 51.63, 52.98, 55364000],
[1564061400, 46.70, 46.90, 45.11, 45.76, 112091500],
[1564147800, 45.38, 46.05, 44.45, 45.61, 50138500],
[1564407000, 45.42, 47.19, 45.21, 47.15, 46366500],
[1564493400, 46.58, 48.67, 46.44, 48.45, 40545000],
[1564579800, 48.60, 49.34, 47.33, 48.32, 45891000],
[1564666200, 48.53, 48.90, 46.35, 46.77, 41297500],
[1564752600, 46.27, 47.25, 45.85, 46.87, 30682500],
[1565011800, 45.92, 46.27, 45.16, 45.66, 35141500],
[1565098200, 46.38, 46.50, 45.15, 46.15, 27821000],
[1565184600, 45.30, 46.71, 45.16, 46.68, 23882500],
[1565271000, 46.89, 47.96, 46.53, 47.66, 26371500],
[1565357400, 47.21, 47.79, 46.76, 47.00, 19491000],
[1565616600, 46.60, 47.15, 45.75, 45.80, 23319500],
[1565703000, 45.76, 47.20, 45.51, 47.00, 24240500],
[1565789400, 46.24, 46.30, 43.34, 43.92, 47813000],
[1565875800, 44.17, 44.31, 42.31, 43.13, 40798000],
[1565962200, 43.33, 44.45, 43.20, 43.99, 25492500],
[1566221400, 44.84, 45.57, 44.34, 45.37, 26548000],
[1566307800, 45.52, 45.82, 44.91, 45.17, 20626000],
[1566394200, 44.40, 44.64, 43.52, 44.17, 38971500],
[1566480600, 44.56, 45.08, 43.64, 44.43, 32795000],
[1566567000, 43.99, 44.23, 42.20, 42.28, 42693000],
[1566826200, 42.72, 43.00, 42.31, 43.00, 25259500],
[1566912600, 43.15, 43.76, 42.41, 42.82, 27081000],
[1566999000, 42.74, 43.45, 42.46, 43.12, 16127500],
[1567085400, 43.80, 44.68, 43.60, 44.34, 25897500],
[1567171800, 45.83, 46.49, 44.84, 45.12, 46603000],
[1567517400, 44.82, 45.79, 44.63, 45.00, 26770500],
[1567603800, 45.38, 45.69, 43.84, 44.14, 28805000],
[1567690200, 44.50, 45.96, 44.17, 45.92, 36976500],
[1567776600, 45.44, 45.93, 45.03, 45.49, 20947000],
[1568035800, 46.00, 46.75, 45.85, 46.36, 24013500],
[1568122200, 46.16, 47.11, 45.79, 47.11, 24418500],
[1568208600, 47.48, 49.63, 47.20, 49.42, 50214000],
[1568295000, 49.54, 50.70, 48.88, 49.17, 42906000],
[1568381400, 49.39, 49.69, 48.97, 49.04, 26565500],
[1568640600, 49.20, 49.49, 48.23, 48.56, 23640500],
[1568727000, 48.49, 49.12, 48.07, 48.96, 19327000],
[1568813400, 49.00, 49.63, 48.47, 48.70, 20851000],
[1568899800, 49.20, 49.59, 48.97, 49.32, 23979000],
[1568986200, 49.30, 49.39, 47.63, 48.12, 31765000],
[1569245400, 48.00, 49.04, 47.84, 48.25, 21701000],
[1569331800, 48.30, 48.40, 44.52, 44.64, 64457500],
[1569418200, 44.91, 45.80, 43.67, 45.74, 47135500],
[1569504600, 46.13, 48.66, 45.48, 48.51, 59422500],
[1569591000, 48.44, 49.74, 47.75, 48.43, 55582000],
[1569850200, 48.60, 48.80, 47.22, 48.17, 29399000],
[1569936600, 48.30, 49.19, 47.83, 48.94, 30813000],
[1570023000, 48.66, 48.93, 47.89, 48.63, 28157000],
[1570109400, 46.37, 46.90, 44.86, 46.61, 75422500],
[1570195800, 46.32, 46.96, 45.61, 46.29, 39975000],
[1570455000, 45.96, 47.71, 45.71, 47.54, 40321000],
[1570541400, 47.17, 48.79, 46.90, 48.01, 43391000],
[1570627800, 48.26, 49.46, 48.13, 48.91, 34472000],
[1570714200, 49.06, 49.86, 48.32, 48.95, 31416500],
[1570800600, 49.43, 50.22, 49.36, 49.58, 42377000],
[1571059800, 49.58, 51.71, 49.43, 51.39, 51025000],
[1571146200, 51.54, 52.00, 50.82, 51.58, 32164000],
[1571232600, 51.48, 52.42, 51.38, 51.95, 33420500],
[1571319000, 52.50, 52.96, 52.03, 52.39, 23846500],
[1571405400, 52.14, 52.56, 51.02, 51.39, 28749000],
[1571664600, 51.67, 51.90, 50.04, 50.70, 25101500],
[1571751000, 50.86, 51.67, 50.17, 51.12, 23004000],
[1571837400, 50.90, 51.23, 50.27, 50.94, 26305500],
[1571923800, 59.67, 60.99, 57.84, 59.94, 148604500],
[1572010200, 59.54, 66.00, 59.22, 65.63, 150030500],
[1572269400, 65.51, 68.17, 64.52, 65.54, 94351500],
[1572355800, 64.00, 64.86, 62.95, 63.24, 63421500],
[1572442200, 62.60, 63.76, 61.99, 63.00, 48209000],
[1572528600, 62.62, 63.80, 62.60, 62.98, 25335000],
[1572615000, 63.26, 63.30, 61.96, 62.66, 31919500],
[1572877800, 62.96, 64.39, 61.85, 63.49, 43935000],
[1572964200, 63.92, 64.70, 63.22, 63.44, 34717000],
[1573050600, 63.60, 65.34, 62.90, 65.32, 39704500],
[1573137000, 65.83, 68.30, 65.60, 67.11, 72336500],
[1573223400, 66.90, 67.49, 66.50, 67.43, 30346000],
[1573482600, 68.79, 69.84, 68.40, 69.02, 49933500],
[1573569000, 69.38, 70.07, 68.81, 69.99, 36797000],
[1573655400, 71.00, 71.27, 69.04, 69.22, 42100500],
[1573741800, 69.22, 70.77, 68.58, 69.87, 32324500],
[1573828200, 70.13, 70.56, 69.67, 70.43, 24045000],
[1574087400, 70.58, 70.63, 69.22, 70.00, 22002000],
[1574173800, 70.35, 72.00, 69.56, 71.90, 38624000],
[1574260200, 72.00, 72.24, 69.91, 70.44, 33625500],
[1574346600, 70.90, 72.17, 70.80, 70.97, 30550000],
[1574433000, 68.03, 68.20, 66.00, 66.61, 84353000],
[1574692200, 68.86, 68.91, 66.89, 67.27, 61697500],
[1574778600, 67.05, 67.10, 65.42, 65.78, 39737000],
[1574865000, 66.22, 66.79, 65.71, 66.26, 27778000],
[1575037800, 66.22, 66.25, 65.50, 65.99, 12328000],
[1575297000, 65.88, 67.28, 65.74, 66.97, 30372500],
[1575383400, 66.52, 67.58, 66.44, 67.24, 32868500],
[1575469800, 67.55, 67.57, 66.57, 66.61, 27665000],
[1575556200, 66.57, 66.88, 65.45, 66.07, 18623000],
[1575642600, 67.00, 67.77, 66.95, 67.18, 38062000],
[1575901800, 67.32, 68.89, 67.02, 67.91, 45115500],
[1575988200, 67.99, 70.15, 67.86, 69.77, 44141500],
[1576074600, 70.38, 71.44, 70.22, 70.54, 34489000],
[1576161000, 70.98, 72.55, 70.65, 71.94, 38819500],
[1576247400, 72.21, 73.04, 70.93, 71.68, 32854500],
[1576506600, 72.51, 76.72, 72.50, 76.30, 90871000],
[1576593000, 75.80, 77.10, 75.18, 75.80, 42484000],
[1576679400, 76.13, 79.04, 76.12, 78.63, 70605000],
[1576765800, 79.46, 81.37, 79.30, 80.81, 90535500],
[1576852200, 82.06, 82.60, 80.04, 81.12, 73763500],
[1577111400, 82.36, 84.40, 82.00, 83.84, 66598000],
[1577197800, 83.67, 85.09, 82.54, 85.05, 40273500],
[1577370600, 85.58, 86.70, 85.27, 86.19, 53169500],
[1577457000, 87.00, 87.06, 85.22, 86.08, 49728500],
[1577716200, 85.76, 85.80, 81.85, 82.94, 62932000],
[1577802600, 81.00, 84.26, 80.42, 83.67, 51428500],
[1577975400, 84.90, 86.14, 84.34, 86.05, 47660500],
[1578061800, 88.10, 90.80, 87.38, 88.60, 88892500],
[1578321000, 88.09, 90.31, 88.00, 90.31, 50665000],
[1578407400, 92.28, 94.33, 90.67, 93.81, 89410500],
[1578493800, 94.74, 99.70, 93.65, 98.43, 155721500],
[1578580200, 99.42, 99.76, 94.57, 96.27, 142202000],
[1578666600, 96.36, 96.99, 94.74, 95.63, 64797500],
[1578925800, 98.70, 105.13, 98.40, 104.97, 132588000],
[1579012200, 108.85, 109.48, 104.98, 107.58, 144981000],
[1579098600, 105.95, 107.57, 103.36, 103.70, 86844000],
[1579185000, 98.75, 102.89, 98.43, 102.70, 108683500],
[1579271400, 101.52, 103.13, 100.63, 102.10, 68145500],
[1579617000, 106.05, 109.72, 105.68, 109.44, 89017500],
[1579703400, 114.38, 118.90, 111.82, 113.91, 156845000],
[1579789800, 112.85, 116.40, 111.12, 114.44, 98255000],
[1579876200, 114.13, 114.77, 110.85, 112.96, 71768000],
[1580135400, 108.40, 112.89, 107.86, 111.60, 68040500],
[1580221800, 113.70, 115.36, 111.62, 113.38, 58942500],
[1580308200, 115.14, 117.96, 113.49, 116.20, 89007500],
[1580394600, 126.48, 130.18, 123.60, 128.16, 145028500],
[1580481000, 128.00, 130.60, 126.50, 130.11, 78596500],
[1580740200, 134.74, 157.23, 134.70, 156.00, 235325000],
[1580826600, 176.59, 193.80, 166.78, 177.41, 304694000],
[1580913000, 164.65, 169.20, 140.82, 146.94, 242119000],
[1580999400, 139.98, 159.17, 137.40, 149.79, 199404000],
[1581085800, 146.11, 153.95, 146.00, 149.61, 85317500],
[1581345000, 160.00, 164.00, 150.48, 154.26, 123446000],
[1581431400, 153.76, 156.70, 151.60, 154.88, 58487500],
[1581517800, 155.57, 157.95, 152.67, 153.46, 60112500],
[1581604200, 148.37, 163.60, 147.00, 160.80, 131446500],
[1581690600, 157.44, 162.59, 157.10, 160.01, 78468500],
[1582036200, 168.32, 172.00, 166.47, 171.68, 81908500],
[1582122600, 184.70, 188.96, 180.20, 183.48, 127115000],
[1582209000, 182.39, 182.40, 171.99, 179.88, 88174500],
[1582295400, 181.40, 182.61, 176.09, 180.20, 71574000],
[1582554600, 167.80, 172.70, 164.44, 166.76, 75961000],
[1582641000, 169.80, 171.32, 157.40, 159.98, 86452500],
[1582727400, 156.50, 162.66, 155.22, 155.76, 70427500],
[1582813800, 146.00, 147.95, 133.80, 135.80, 121386000],
[1582900200, 125.94, 138.10, 122.30, 133.60, 121114500],
[1583159400, 142.25, 148.74, 137.33, 148.72, 100975000],
[1583245800, 161.00, 161.40, 143.22, 149.10, 128920000],
[1583332200, 152.79, 153.30, 144.95, 149.90, 75245000],
[1583418600, 144.75, 149.15, 143.61, 144.91, 54263500],
[1583505000, 138.00, 141.40, 136.85, 140.70, 63314500],
[1583760600, 121.08, 132.60, 121.00, 121.60, 85368500],
[1583847000, 131.89, 133.60, 121.60, 129.07, 77972000],
[1583933400, 128.04, 130.72, 122.60, 126.85, 66612500],
[1584019800, 116.18, 118.90, 109.25, 112.11, 94545500],
[1584106200, 119.00, 121.51, 100.40, 109.32, 113201500],
[1584365400, 93.90, 98.97, 88.43, 89.01, 102447500],
[1584451800, 88.00, 94.37, 79.20, 86.04, 119973000],
[1584538200, 77.80, 80.97, 70.10, 72.24, 118931000],
[1584624600, 74.94, 90.40, 71.69, 85.53, 150977500],
[1584711000, 87.64, 95.40, 85.16, 85.51, 141427500],
[1584970200, 86.72, 88.40, 82.10, 86.86, 82272500],
[1585056600, 95.46, 102.74, 94.80, 101.00, 114476000],
[1585143000, 109.05, 111.40, 102.22, 107.85, 106113500],
[1585229400, 109.48, 112.00, 102.45, 105.63, 86903500],
[1585315800, 101.00, 105.16, 98.81, 102.87, 71887000],
[1585575000, 102.05, 103.33, 98.25, 100.43, 59990500],
[1585661400, 100.25, 108.59, 99.40, 104.80, 88857500],
[1585747800, 100.80, 102.79, 95.02, 96.31, 66766000],
[1585834200, 96.21, 98.85, 89.28, 90.89, 99292000],
[1585920600, 101.90, 103.10, 93.68, 96.00, 112810500],
[1586179800, 102.24, 104.20, 99.59, 103.25, 74509000],
[1586266200, 109.00, 113.00, 106.47, 109.09, 89599000],
[1586352600, 110.84, 111.44, 106.67, 109.77, 63280000],
[1586439000, 112.42, 115.04, 111.42, 114.60, 68250000],
[1586784600, 118.03, 130.40, 116.11, 130.19, 112377000],
[1586871000, 139.79, 148.38, 138.49, 141.98, 152882500],
[1586957400, 148.40, 150.63, 142.00, 145.97, 117885000],
[1587043800, 143.39, 151.89, 141.34, 149.04, 103289500],
[1587130200, 154.46, 154.99, 149.53, 150.78, 65641000],
[1587389400, 146.54, 153.11, 142.44, 149.27, 73733000],
[1587475800, 146.02, 150.67, 134.76, 137.34, 101045500],
[1587562200, 140.80, 146.80, 137.74, 146.42, 70827500],
[1587648600, 145.52, 146.80, 140.63, 141.13, 66183500],
[1587735000, 142.16, 146.15, 139.64, 145.03, 66060000],
[1587994200, 147.52, 159.90, 147.00, 159.75, 103407000],
[1588080600, 159.13, 161.00, 151.34, 153.82, 76110000],
[1588167000, 158.03, 160.64, 156.63, 160.10, 81080000],
[1588253400, 171.04, 173.96, 152.70, 156.38, 142359500],
[1588339800, 151.00, 154.55, 136.61, 140.26, 162659000],
[1588599000, 140.20, 152.40, 139.60, 152.24, 96185500],
[1588685400, 157.96, 159.78, 152.44, 153.64, 84958500],
[1588771800, 155.30, 157.96, 152.22, 156.52, 55616000],
[1588858200, 155.44, 159.28, 154.47, 156.01, 57638500],
[1588944600, 158.75, 164.80, 157.40, 163.88, 80432500],
[1589203800, 158.10, 164.80, 157.00, 162.26, 82598000],
[1589290200, 165.40, 168.66, 161.60, 161.88, 79534500],
[1589376600, 164.17, 165.20, 152.66, 158.19, 95327500],
[1589463000, 156.00, 160.67, 152.80, 160.67, 68411000],
[1589549400, 158.07, 161.01, 157.31, 159.83, 52592000],
[1589808600, 165.56, 166.94, 160.78, 162.73, 58329000],
[1589895000, 163.03, 164.41, 161.22, 161.60, 48182500],
[1589981400, 164.10, 165.20, 162.36, 163.11, 36546500],
[1590067800, 163.20, 166.50, 159.20, 165.52, 61273000],
[1590154200, 164.43, 166.36, 162.40, 163.38, 49937500],
[1590499800, 166.90, 166.92, 163.14, 163.77, 40448500],
[1590586200, 164.17, 165.54, 157.00, 164.05, 57747500],
[1590672600, 162.70, 164.95, 160.34, 161.16, 36278000],
[1590759000, 161.75, 167.00, 160.84, 167.00, 58822500],
[1591018200, 171.60, 179.80, 170.82, 179.62, 74697500],
[1591104600, 178.94, 181.73, 174.20, 176.31, 67828000],
[1591191000, 177.62, 179.59, 176.02, 176.59, 39747500],
[1591277400, 177.98, 179.15, 171.69, 172.88, 44438500],
[1591363800, 175.57, 177.30, 173.24, 177.13, 39059500],
[1591623000, 183.80, 190.00, 181.83, 189.98, 70873500],
[1591709400, 188.00, 190.89, 184.79, 188.13, 56941000],
[1591795800, 198.38, 205.50, 196.50, 205.01, 92817000],
[1591882200, 198.04, 203.79, 194.40, 194.57, 79582500],
[1591968600, 196.00, 197.60, 182.52, 187.06, 83817000],
[1592227800, 183.56, 199.77, 181.70, 198.18, 78486000],
[1592314200, 202.37, 202.58, 192.48, 196.43, 70255500],
[1592400600, 197.54, 201.00, 196.51, 198.36, 49454000],
[1592487000, 200.60, 203.84, 198.89, 200.79, 48759500],
[1592573400, 202.56, 203.19, 198.27, 200.18, 43398500],
[1592832600, 199.99, 201.78, 198.00, 198.86, 31812000],
[1592919000, 199.78, 202.40, 198.80, 200.36, 31826500],
[1593005400, 198.82, 200.18, 190.63, 192.17, 54798000],
[1593091800, 190.85, 197.20, 187.43, 197.20, 46272500],
[1593178200, 198.96, 199.00, 190.97, 191.95, 44274500],
[1593437400, 193.80, 202.00, 189.70, 201.87, 45132000],
[1593523800, 201.30, 217.54, 200.75, 215.96, 84592500],
[1593610200, 216.60, 227.07, 216.10, 223.93, 66634500],
[1593696600, 244.30, 245.60, 237.12, 241.73, 86250500],
[1594042200, 255.34, 275.56, 253.21, 274.32, 102849500],
[1594128600, 281.00, 285.90, 267.34, 277.97, 107448500],
[1594215000, 281.00, 283.45, 262.27, 273.18, 81556500],
[1594301400, 279.40, 281.71, 270.26, 278.86, 58588000],
[1594387800, 279.20, 309.78, 275.20, 308.93, 116688000],
[1594647000, 331.80, 359.00, 294.22, 299.41, 194927000],
[1594733400, 311.20, 318.00, 286.20, 303.36, 117090500],
[1594819800, 308.60, 310.00, 291.40, 309.20, 81839000],
[1594906200, 295.43, 306.34, 293.20, 300.13, 71504000],
[1594992600, 302.69, 307.50, 298.00, 300.17, 46650000],
[1595251800, 303.80, 330.00, 297.60, 328.60, 85607000],
[1595338200, 327.99, 335.00, 311.60, 313.67, 80536000],
[1595424600, 319.80, 325.28, 312.40, 318.47, 70805500],
[1595511000, 335.79, 337.80, 296.15, 302.61, 121642500],
[1595597400, 283.20, 293.00, 273.31, 283.40, 96983000],
[1595856600, 287.00, 309.59, 282.60, 307.92, 80243500],
[1595943000, 300.80, 312.94, 294.88, 295.30, 79043500],
[1596029400, 300.20, 306.96, 297.40, 299.82, 47134500],
[1596115800, 297.60, 302.65, 294.20, 297.50, 38105000],
[1596202200, 303.00, 303.41, 284.20, 286.15, 61041000],
[1596461400, 289.84, 301.96, 288.88, 297.00, 44046500],
[1596547800, 299.00, 305.48, 292.40, 297.40, 42075000],
[1596634200, 298.60, 299.97, 293.66, 297.00, 24739000],
[1596720600, 298.17, 303.46, 295.45, 297.92, 29961500],
[1596807000, 299.91, 299.95, 283.00, 290.54, 44482000],
[1597066200, 289.60, 291.50, 277.17, 283.71, 37611500],
[1597152600, 279.20, 284.00, 273.00, 274.88, 43129000],
[1597239000, 294.00, 317.00, 287.00, 310.95, 109147000],
[1597325400, 322.20, 330.24, 313.45, 324.20, 102126500],
[1597411800, 333.00, 333.76, 325.33, 330.14, 62888000],
[1597671000, 335.40, 369.17, 334.57, 367.13, 101211500],
[1597757400, 379.80, 384.78, 369.02, 377.42, 82372500],
[1597843800, 373.00, 382.20, 368.24, 375.71, 61026500],
[1597930200, 372.14, 404.40, 371.41, 400.37, 103059000],
[1598016600, 408.95, 419.10, 405.01, 410.00, 107448000],
[1598275800, 425.26, 425.80, 385.50, 402.84, 100318000],
[1598362200, 394.98, 405.59, 393.60, 404.67, 53294500],
[1598448600, 412.00, 433.20, 410.73, 430.63, 71197000],
[1598535000, 436.09, 459.12, 428.50, 447.75, 118465000],
[1598621400, 459.02, 463.70, 437.30, 442.68, 100406000],
[1598880600, 444.61, 500.14, 440.11, 498.32, 118374400],
[1598967000, 502.14, 502.49, 470.51, 475.05, 89841100],
[1599053400, 478.99, 479.04, 405.12, 447.37, 96176100],
[1599139800, 407.23, 431.80, 402.00, 407.00, 87596100],
[1599226200, 402.81, 428.00, 372.02, 418.32, 110321900],
[1599571800, 356.00, 368.74, 329.88, 330.21, 115465700],
[1599658200, 356.60, 369.00, 341.51, 366.28, 79465800],
[1599744600, 386.21, 398.99, 360.56, 371.34, 84930600],
[1599831000, 381.94, 382.50, 360.50, 372.72, 60717500],
[1600090200, 380.95, 420.00, 373.30, 419.62, 83020600],
[1600176600, 436.56, 461.94, 430.70, 449.76, 97298200],
[1600263000, 439.87, 457.79, 435.31, 441.76, 72279300],
[1600349400, 415.60, 437.79, 408.00, 423.43, 76779200],
[1600435800, 447.94, 451.00, 428.80, 442.15, 86406800],
[1600695000, 453.13, 455.68, 407.07, 449.39, 109476800],
[1600781400, 429.60, 437.76, 417.60, 424.23, 79580800],
[1600867800, 405.16, 412.15, 375.88, 380.36, 95074200],
[1600954200, 363.80, 399.50, 351.30, 387.79, 96561100],
[1601040600, 393.47, 408.73, 391.30, 407.34, 67208500],
[1601299800, 424.62, 428.08, 415.55, 421.20, 49719600],
[1601386200, 416.00, 428.50, 411.60, 419.07, 50219300],
[1601472600, 421.32, 433.93, 420.47, 429.01, 48145600],
[1601559000, 440.76, 448.88, 434.42, 448.16, 50741500],
[1601645400, 421.39, 439.13, 415.00, 415.09, 71430000],
[1601904600, 423.35, 433.64, 419.33, 425.68, 44722800],
[1601991000, 423.79, 428.78, 406.05, 413.98, 49146300],
[1602077400, 419.87, 429.90, 413.85, 425.30, 43127700],
[1602163800, 438.44, 439.00, 425.30, 425.92, 40421100],
[1602250200, 430.13, 434.59, 426.46, 434.00, 28925700],
[1602509400, 442.00, 448.74, 438.58, 442.30, 38791100],
[1602595800, 443.35, 448.89, 436.60, 446.65, 34463700],
[1602682200, 449.78, 465.90, 447.35, 461.30, 47879700],
[1602768600, 450.31, 456.57, 442.50, 448.88, 35672400],
[1602855000, 454.44, 455.95, 438.85, 439.67, 32775900],
[1603114200, 446.24, 447.00, 428.87, 430.83, 36287800],
[1603200600, 431.75, 431.75, 419.05, 421.94, 31656300],
[1603287000, 422.70, 432.95, 421.25, 422.64, 32370500],
[1603373400, 441.92, 445.23, 424.51, 425.79, 39993200],
[1603459800, 421.84, 422.89, 407.38, 420.63, 33717000],
[1603719000, 411.63, 425.76, 410.00, 420.28, 28239200],
[1603805400, 423.76, 430.50, 420.10, 424.68, 22686500],
[1603891800, 416.48, 418.60, 406.00, 406.02, 25451400],
[1603978200, 409.96, 418.06, 406.46, 410.83, 22655300],
[1604064600, 406.90, 407.59, 379.11, 388.04, 42511300],
[1604327400, 394.00, 406.98, 392.30, 400.51, 29021100],
[1604413800, 409.73, 427.77, 406.69, 423.90, 34351700],
[1604500200, 430.62, 435.40, 417.10, 420.98, 32143100],
[1604586600, 428.30, 440.00, 424.00, 438.09, 28414500],
[1604673000, 436.10, 436.57, 424.28, 429.95, 21706000],
[1604932200, 439.50, 452.50, 421.00, 421.26, 34833000],
[1605018600, 420.09, 420.09, 396.03, 410.36, 30284200],
[1605105000, 416.45, 418.70, 410.58, 417.13, 17357700],
[1605191400, 415.05, 423.00, 409.52, 411.76, 19855100],
[1605277800, 410.85, 412.53, 401.66, 408.50, 19771100],
[1605537000, 408.93, 412.45, 404.09, 408.09, 26838600],
[1605623400, 460.17, 462.00, 433.01, 441.61, 61188300],
[1605709800, 448.35, 496.00, 443.50, 486.64, 78044000],
[1605796200, 492.00, 508.61, 487.57, 499.27, 62475300],
[1605882600, 497.99, 502.50, 489.06, 489.61, 32911900],
[1606141800, 503.50, 526.00, 501.79, 521.85, 50260300],
[1606228200, 540.40, 559.99, 526.20, 555.38, 53648500],
[1606314600, 550.06, 574.00, 545.37, 574.00, 48930200],
[1606487400, 581.16, 598.78, 578.45, 585.76, 37561100],
[1606746600, 602.21, 607.80, 554.51, 567.60, 63003100],
[1606833000, 597.59, 597.85, 572.05, 584.76, 40103500],
[1606919400, 556.44, 571.54, 541.21, 568.82, 47775700],
[1607005800, 590.02, 598.97, 582.43, 593.38, 42552000],
[1607092200, 591.01, 599.04, 585.50, 599.04, 29401300],
[1607351400, 604.92, 648.79, 603.05, 641.76, 56309700],
[1607437800, 625.51, 651.28, 618.50, 649.88, 64265000],
[1607524200, 653.69, 654.32, 588.00, 604.48, 71291200],
[1607610600, 574.37, 627.75, 566.34, 627.07, 67083200],
[1607697000, 615.01, 624.00, 596.80, 609.99, 46475000],
[1607956200, 619.00, 642.75, 610.20, 639.83, 52040600],
[1608042600, 643.28, 646.90, 623.80, 633.25, 45071500],
[1608129000, 628.23, 632.50, 605.00, 622.77, 42095800],
[1608215400, 628.19, 658.82, 619.50, 655.90, 56270100],
[1608301800, 668.90, 695.00, 628.54, 695.00, 222126200],
[1608561000, 666.24, 668.50, 646.07, 649.86, 58045300],
[1608647400, 648.00, 649.88, 614.23, 640.34, 51716000],
[1608733800, 632.20, 651.50, 622.57, 645.98, 33173000],
[1608820200, 642.99, 666.09, 641.00, 661.77, 22865600],
[1609165800, 674.51, 681.40, 660.80, 663.69, 32278600],
[1609252200, 661.00, 669.90, 655.00, 665.99, 22910800],
[1609338600, 672.00, 696.60, 668.36, 694.78, 42846000],
[1609425000, 699.99, 718.72, 691.12, 705.67, 49649900],
[1609770600, 719.46, 744.49, 717.19, 729.77, 48638200],
[1609857000, 723.66, 740.84, 719.20, 735.11, 32245200],
[1609943400, 758.49, 774.00, 749.10, 755.98, 44700000],
[1610029800, 777.63, 816.99, 775.20, 816.04, 51498900],
[1610116200, 856.00, 884.49, 838.39, 880.02, 75055500],
[1610375400, 849.40, 854.43, 803.62, 811.19, 59301600],
[1610461800, 831.00, 868.00, 827.34, 849.44, 46270700],
[1610548200, 852.76, 860.47, 832.00, 854.41, 33312500],
[1610634600, 843.39, 863.00, 838.75, 845.00, 31266300],
[1610721000, 852.00, 859.90, 819.10, 826.16, 38777600],
[1611066600, 837.80, 850.00, 833.00, 844.55, 25367000],
[1611153000, 858.74, 859.50, 837.28, 850.45, 25665900],
[1611239400, 855.00, 855.72, 841.42, 844.99, 20521100],
[1611325800, 834.31, 848.00, 828.62, 846.64, 20066500],
[1611585000, 855.00, 900.40, 838.82, 880.80, 41173400],
[1611671400, 891.38, 895.90, 871.60, 883.09, 23131600],
[1611757800, 870.35, 891.50, 858.66, 864.16, 27334000],
[1611844200, 820.00, 848.00, 801.00, 835.43, 26378000],
[1611930600, 830.00, 842.41, 780.10, 793.53, 34990800],
[1612189800, 814.29, 842.00, 795.56, 839.81, 25391400],
[1612276200, 844.68, 880.50, 842.20, 872.79, 24346200],
[1612362600, 877.02, 878.08, 853.06, 854.69, 18343500],
[1612449000, 855.00, 856.50, 833.42, 849.99, 15812700],
[1612535400, 845.00, 864.77, 838.97, 852.23, 18566600],
[1612794600, 869.67, 877.77, 854.75, 863.42, 20161700],
[1612881000, 855.12, 859.80, 841.75, 849.46, 15157700],
[1612967400, 843.64, 844.82, 800.02, 804.82, 36216100],
[1613053800, 812.44, 829.88, 801.73, 811.66, 21622800],
[1613140200, 801.26, 817.33, 785.33, 816.12, 23768300],
[1613485800, 818.00, 821.00, 792.44, 796.22, 19802300],
[1613572200, 779.09, 799.84, 762.01, 798.15, 25996500],
[1613658600, 780.90, 794.69, 776.27, 787.38, 17957100],
[1613745000, 795.00, 796.79, 777.37, 781.30, 18958300],
[1614004200, 762.64, 768.50, 710.20, 714.50, 37269700],
[1614090600, 662.13, 713.61, 619.00, 698.84, 66606900],
[1614177000, 711.85, 745.00, 694.17, 742.02, 36767000],
[1614263400, 726.15, 737.21, 670.58, 682.22, 39023900],
[1614349800, 700.00, 706.70, 659.51, 675.50, 41089200],
[1614609000, 690.11, 719.00, 685.05, 718.43, 27136200],
[1614695400, 718.28, 721.11, 685.00, 686.44, 23732200],
[1614781800, 687.99, 700.70, 651.71, 653.20, 30208000],
[1614868200, 655.80, 668.45, 600.00, 621.44, 65919500],
[1614954600, 626.06, 627.84, 539.49, 597.95, 89396500],
[1615213800, 600.55, 620.13, 558.79, 563.00, 51787000],
[1615300200, 608.18, 678.09, 595.21, 673.58, 67523300],
[1615386600, 700.30, 717.85, 655.06, 668.06, 60605700],
[1615473000, 699.40, 702.50, 677.18, 699.60, 36253900],
[1615559400, 670.00, 694.88, 666.14, 693.73, 33583800],
[1615815000, 694.09, 713.18, 684.04, 707.94, 29335600],
[1615901400, 703.35, 707.92, 671.00, 676.88, 32195700],
[1615987800, 656.87, 703.73, 651.01, 701.81, 40372500],
[1616074200, 684.29, 689.23, 652.00, 653.16, 33224800],
[1616160600, 646.60, 657.23, 624.62, 654.87, 42894000],
[1616419800, 684.59, 699.62, 668.75, 670.00, 39512200],
[1616506200, 675.77, 677.80, 657.51, 662.16, 30491900],
[1616592600, 667.91, 668.02, 630.11, 630.27, 33795200],
[1616679000, 613.00, 645.50, 609.50, 640.39, 39224900],
[1616765400, 641.87, 643.82, 599.89, 618.71, 33852800],
[1617024600, 615.64, 616.48, 596.02, 611.29, 28637000],
[1617111000, 601.75, 637.66, 591.01, 635.62, 39432400],
[1617197400, 646.62, 672.00, 641.11, 667.93, 33337300],
[1617283800, 688.37, 692.42, 659.42, 661.75, 35298400],
[1617629400, 707.71, 708.16, 684.70, 691.05, 41842800],
[1617715800, 690.30, 696.55, 681.37, 691.62, 28271800],
[1617802200, 687.00, 691.38, 667.84, 670.97, 26309400],
[1617888600, 677.38, 689.55, 671.65, 683.80, 23924300],
[1617975000, 677.77, 680.97, 669.43, 677.02, 21437100],
[1618234200, 685.70, 704.80, 682.09, 701.98, 29135700],
[1618320600, 712.70, 763.00, 710.66, 762.32, 44652800],
[1618407000, 770.70, 780.79, 728.03, 732.23, 49017400],
[1618493400, 743.10, 743.69, 721.31, 738.85, 27848900],
[1618579800, 728.65, 749.41, 724.60, 739.78, 27979500],
[1618839000, 719.60, 725.40, 691.80, 714.63, 39686200],
[1618925400, 717.42, 737.25, 710.69, 718.99, 35609000],
[1619011800, 704.77, 744.84, 698.00, 744.12, 31215500],
[1619098200, 741.50, 753.77, 718.04, 719.69, 35590300],
[1619184600, 719.80, 737.36, 715.46, 729.40, 28370000],
[1619443800, 741.00, 749.30, 732.61, 738.20, 31038500],
[1619530200, 717.96, 724.00, 703.35, 704.74, 29437000],
[1619616600, 696.41, 708.50, 693.60, 694.40, 22271000],
[1619703000, 699.51, 702.25, 668.50, 677.00, 28845400],
[1619789400, 667.59, 715.47, 666.14, 709.44, 40758700],
[1620048600, 703.80, 706.00, 680.50, 684.90, 27043100],
[1620135000, 678.94, 683.45, 657.70, 673.60, 29739300],
[1620221400, 681.06, 685.30, 667.34, 670.94, 21901900],
[1620307800, 680.76, 681.02, 650.00, 663.54, 27784600],
[1620394200, 665.80, 690.00, 660.22, 672.37, 23469200],
[1620653400, 664.90, 665.05, 627.61, 629.04, 31392400],
[1620739800, 599.24, 627.10, 595.60, 617.20, 46503900],
[1620826200, 602.49, 620.41, 586.77, 589.89, 33823600],
[1620912600, 601.54, 606.46, 559.65, 571.69, 44184900],
[1620999000, 583.41, 592.87, 570.46, 589.74, 33370900],
[1621258200, 575.55, 589.73, 561.20, 576.83, 32390400],
[1621344600, 568.00, 596.25, 563.38, 577.87, 36830600],
[1621431000, 552.55, 566.21, 546.98, 563.46, 39578400],
[1621517400, 575.00, 588.85, 571.07, 586.78, 30821100],
[1621603800, 596.11, 596.68, 580.00, 580.88, 26030600],
[1621863000, 581.60, 614.48, 573.65, 606.44, 34558100],
[1621949400, 607.31, 613.99, 595.71, 604.69, 28005900],
[1622035800, 607.56, 626.17, 601.50, 619.13, 28639300],
[1622122200, 620.24, 631.13, 616.21, 630.85, 26370600],
[1622208600, 628.50, 635.59, 622.38, 625.22, 22737000],
[1622554200, 627.80, 633.80, 620.55, 623.90, 18084900],
[1622640600, 620.13, 623.36, 599.14, 605.12, 23302800],
[1622727000, 601.80, 604.55, 571.22, 572.84, 30111900],
[1622813400, 579.71, 600.61, 577.20, 599.05, 24036900],
[1623072600, 591.83, 610.00, 582.88, 605.13, 22543700],
[1623159000, 623.01, 623.09, 595.50, 603.59, 26053400],
[1623245400, 602.17, 611.79, 597.63, 598.78, 16584600],
[1623331800, 603.88, 616.59, 600.50, 610.12, 23919600],
[1623418200, 610.23, 612.56, 601.52, 609.89, 16205300],
[1623677400, 612.23, 625.49, 609.18, 617.69, 20424000],
[1623763800, 616.69, 616.79, 598.23, 599.36, 17764100],
[1623850200, 597.54, 608.50, 593.50, 604.87, 22144100],
[1623936600, 601.89, 621.47, 601.34, 616.60, 22701400],
[1624023000, 613.37, 628.35, 611.80, 623.31, 24560900],
[1624282200, 624.48, 631.39, 608.88, 620.83, 24812700],
[1624368600, 618.25, 628.57, 615.50, 623.71, 19158900],
[1624455000, 632.00, 657.20, 630.04, 656.57, 31099200],
[1624541400, 674.99, 697.62, 667.61, 679.82, 45982400],
[1624627800, 689.58, 693.81, 668.70, 671.87, 32496700],
[1624887000, 671.64, 694.70, 670.32, 688.72, 21628200],
[1624973400, 684.65, 687.51, 675.89, 680.76, 17381300],
[1625059800, 679.77, 692.81, 678.14, 679.70, 18924900],
[1625146200, 683.92, 687.99, 672.80, 677.92, 18634500],
[1625232600, 678.98, 700.00, 673.26, 678.90, 27054500],
[1625578200, 681.71, 684.00, 651.40, 659.58, 23284500],
[1625664600, 664.27, 665.70, 638.32, 644.65, 18792000],
[1625751000, 628.37, 654.43, 620.46, 652.81, 22773300],
[1625837400, 653.18, 658.91, 644.69, 656.95, 18140500],
[1626096600, 662.20, 687.24, 662.16, 685.70, 25927000],
[1626183000, 686.32, 693.28, 666.30, 668.54, 20966100],
[1626269400, 670.75, 678.61, 652.84, 653.38, 21641200],
[1626355800, 658.39, 666.14, 637.88, 650.60, 20209600],
[1626442200, 654.68, 656.70, 642.20, 644.22, 16371000],
[1626701400, 629.89, 647.20, 621.29, 646.22, 21297100],
[1626787800, 651.99, 662.39, 640.50, 660.50, 15487100],
[1626874200, 659.61, 664.86, 650.29, 655.29, 13953300],
[1626960600, 656.44, 662.17, 644.60, 649.26, 15105700],
[1627047000, 646.36, 648.80, 637.30, 643.38, 14604900],
[1627306200, 650.97, 668.20, 647.11, 657.62, 25336600],
[1627392600, 663.40, 666.50, 627.24, 644.78, 32813300],
[1627479000, 647.00, 654.97, 639.40, 646.98, 16006600],
[1627565400, 649.79, 683.69, 648.80, 677.35, 30394600],
[1627651800, 671.76, 697.53, 669.00, 687.20, 29600500],
[1627911000, 700.00, 726.94, 698.40, 709.67, 33615800],
[1627997400, 719.00, 722.65, 701.01, 709.74, 21620300],
[1628083800, 711.00, 724.90, 708.93, 710.92, 17002600],
[1628170200, 716.00, 720.95, 711.41, 714.63, 12919600],
[1628256600, 711.90, 716.33, 697.63, 699.10, 15576200],
[1628515800, 710.17, 719.03, 705.13, 713.76, 14715300],
[1628602200, 713.99, 716.59, 701.88, 709.99, 13432300],
[1628688600, 712.71, 715.18, 704.21, 707.82, 9800600],
[1628775000, 706.34, 722.80, 699.40, 722.25, 17459100],
[1628861400, 723.71, 729.90, 714.34, 717.17, 16698900],
[1629120600, 705.07, 709.50, 676.40, 686.17, 22677400],
[1629207000, 672.66, 674.58, 648.84, 665.71, 23721300],
[1629293400, 669.75, 695.77, 669.35, 688.99, 20349400],
[1629379800, 678.21, 686.55, 667.59, 673.47, 14313500],
[1629466200, 682.85, 692.13, 673.70, 680.26, 14781800],
[1629725400, 685.44, 712.13, 680.75, 706.30, 20264900],
[1629811800, 710.68, 715.22, 702.64, 708.49, 13083100],
[1629898200, 707.03, 716.97, 704.00, 711.20, 12645600],
[1629984600, 708.31, 715.40, 697.62, 701.16, 13214300],
[1630071000, 705.00, 715.00, 702.10, 711.92, 13762100],
[1630330200, 714.72, 731.00, 712.73, 730.91, 18604200],
[1630416600, 733.00, 740.39, 726.44, 735.72, 20855400],
[1630503000, 734.08, 741.99, 731.27, 734.09, 13204300],
[1630589400, 734.50, 740.97, 730.54, 732.39, 12777300],
[1630675800, 732.25, 734.00, 724.20, 733.57, 15246100],
[1631021400, 740.00, 760.20, 739.26, 752.92, 20039800],
[1631107800, 761.58, 764.45, 740.77, 753.87, 18793000],
[1631194200, 753.41, 762.10, 751.63, 754.86, 14077700],
[1631280600, 759.60, 762.61, 734.52, 736.27, 15114300],
[1631539800, 740.21, 744.78, 708.85, 743.00, 22952500],
[1631626200, 742.57, 754.47, 736.40, 744.49, 18524900],
[1631712600, 745.00, 756.86, 738.36, 755.83, 15357700],
[1631799000, 752.83, 758.91, 747.61, 756.99, 13923400],
[1631885400, 757.15, 761.04, 750.00, 759.49, 28204200],
[1632144600, 734.56, 742.00, 718.62, 730.17, 24757700],
[1632231000, 734.79, 744.74, 730.44, 739.38, 16330700],
[1632317400, 743.53, 753.67, 739.12, 751.94, 15126300],
[1632403800, 755.00, 758.20, 747.92, 753.64, 11947500],
[1632490200, 745.89, 774.80, 744.56, 774.39, 21373000],
[1632749400, 773.12, 799.00, 769.31, 791.36, 28070700],
[1632835800, 787.20, 795.64, 766.18, 777.56, 25381400],
[1632922200, 779.80, 793.50, 770.68, 781.31, 20942900],
[1633008600, 781.00, 789.13, 775.00, 775.48, 17956000],
[1633095000, 778.40, 780.78, 763.59, 775.22, 17031400],
[1633354200, 796.50, 806.97, 776.12, 781.53, 30483300],
[1633440600, 784.80, 797.31, 774.20, 780.59, 18432600],
[1633527000, 776.20, 786.66, 773.22, 782.75, 14632800],
[1633613400, 785.46, 805.00, 783.38, 793.61, 19195800],
[1633699800, 796.21, 796.38, 780.91, 785.49, 16711100],
[1633959000, 787.65, 801.24, 785.50, 791.94, 14175800],
[1634064472, 800.93, 812.32, 796.57, 811.41, 17289281],
];
static List<CandleData> get candles => _rawData
.map((row) => CandleData(
timestamp: row[0] * 1000,
open: row[1]?.toDouble(),
high: row[2]?.toDouble(),
low: row[3]?.toDouble(),
close: row[4]?.toDouble(),
volume: row[5]?.toDouble(),
))
.toList();
}
================================================
FILE: example/pubspec.yaml
================================================
name: example
description: A new Flutter project.
publish_to: 'none'
environment:
sdk: ^3.0.0
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^1.0.2
interactive_chart:
path: ../
dev_dependencies:
flutter_lints:
flutter:
uses-material-design: true
================================================
FILE: example/web/index.html
================================================
<!DOCTYPE html>
<html>
<head>
<!--
If you are serving your web app in a path other than the root, change the
href value below to reflect the base path you are serving from.
The path provided below has to start and end with a slash "/" in order for
it to work correctly.
For more details:
* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
This is a placeholder for base href that will be replaced by the value of
the `--base-href` argument provided to `flutter build`.
-->
<base href="$FLUTTER_BASE_HREF">
<meta charset="UTF-8">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
<meta name="description" content="A new Flutter project.">
<!-- iOS meta tags & icons -->
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="example">
<link rel="apple-touch-icon" href="icons/Icon-192.png">
<!-- Favicon -->
<link rel="icon" type="image/png" href="favicon.png"/>
<title>example</title>
<link rel="manifest" href="manifest.json">
</head>
<body>
<script src="flutter_bootstrap.js" async></script>
</body>
</html>
================================================
FILE: example/web/manifest.json
================================================
{
"name": "example",
"short_name": "example",
"start_url": ".",
"display": "standalone",
"background_color": "#0175C2",
"theme_color": "#0175C2",
"description": "A new Flutter project.",
"orientation": "portrait-primary",
"prefer_related_applications": false,
"icons": [
{
"src": "icons/Icon-192.png",
"sizes": "192x192",
"type": "image/png"
},
{
"src": "icons/Icon-512.png",
"sizes": "512x512",
"type": "image/png"
},
{
"src": "icons/Icon-maskable-192.png",
"sizes": "192x192",
"type": "image/png",
"purpose": "maskable"
},
{
"src": "icons/Icon-maskable-512.png",
"sizes": "512x512",
"type": "image/png",
"purpose": "maskable"
}
]
}
================================================
FILE: lib/interactive_chart.dart
================================================
export 'src/candle_data.dart';
export 'src/interactive_chart.dart';
export 'src/chart_style.dart';
================================================
FILE: lib/src/candle_data.dart
================================================
class CandleData {
/// The timestamp of this data point, in milliseconds since epoch.
final int timestamp;
/// The "open" price of this data point. It's acceptable to have null here for
/// a few data points, but they must not all be null. If either [open] or
/// [close] is null for a data point, it will appear as a gap in the chart.
final double? open;
/// The "high" price. If either one of [high] or [low] is null, we won't
/// draw the narrow part of the candlestick for that data point.
final double? high;
/// The "low" price. If either one of [high] or [low] is null, we won't
/// draw the narrow part of the candlestick for that data point.
final double? low;
/// The "close" price of this data point. It's acceptable to have null here
/// for a few data points, but they must not all be null. If either [open] or
/// [close] is null for a data point, it will appear as a gap in the chart.
final double? close;
/// The volume information of this data point.
final double? volume;
/// Data holder for additional trend lines, for this data point.
///
/// For a single trend line, we can assign it as a list with a single element.
/// For example if we want "7 days moving average", do something like
/// `trends = [ma7]`. If there are multiple tread lines, we can assign a list
/// with multiple elements, like `trends = [ma7, ma30]`.
/// If we don't want any trend lines, we can assign an empty list.
///
/// This should be an unmodifiable list, so please do not use `add`
/// or `clear` methods on the list. Always assign a new list if values
/// are changed. Otherwise the UI might not be updated.
List<double?> trends;
CandleData({
required this.timestamp,
required this.open,
required this.close,
required this.volume,
this.high,
this.low,
List<double?>? trends,
}) : this.trends = List.unmodifiable(trends ?? []);
static List<double?> computeMA(List<CandleData> data, [int period = 7]) {
// If data is not at least twice as long as the period, return nulls.
if (data.length < period * 2) return List.filled(data.length, null);
final List<double?> result = [];
// Skip the first [period] data points. For example, skip 7 data points.
final firstPeriod =
data.take(period).map((d) => d.close).whereType<double>();
double ma = firstPeriod.reduce((a, b) => a + b) / firstPeriod.length;
result.addAll(List.filled(period, null));
// Compute the moving average for the rest of the data points.
for (int i = period; i < data.length; i++) {
final curr = data[i].close;
final prev = data[i - period].close;
if (curr != null && prev != null) {
ma = (ma * period + curr - prev) / period;
result.add(ma);
} else {
result.add(null);
}
}
return result;
}
@override
String toString() => "<CandleData ($timestamp: $close)>";
}
================================================
FILE: lib/src/chart_painter.dart
================================================
import 'dart:math';
import 'package:flutter/material.dart';
import 'candle_data.dart';
import 'painter_params.dart';
typedef TimeLabelGetter = String Function(int timestamp, int visibleDataCount);
typedef PriceLabelGetter = String Function(double price);
typedef OverlayInfoGetter = Map<String, String> Function(CandleData candle);
class ChartPainter extends CustomPainter {
final PainterParams params;
final TimeLabelGetter getTimeLabel;
final PriceLabelGetter getPriceLabel;
final OverlayInfoGetter getOverlayInfo;
ChartPainter({
required this.params,
required this.getTimeLabel,
required this.getPriceLabel,
required this.getOverlayInfo,
});
@override
void paint(Canvas canvas, Size size) {
// Draw time labels (dates) & price labels
_drawTimeLabels(canvas, params);
_drawPriceGridAndLabels(canvas, params);
// Draw prices, volumes & trend line
canvas.save();
canvas.clipRect(Offset.zero & Size(params.chartWidth, params.chartHeight));
// canvas.drawRect(
// // apply yellow tint to clipped area (for debugging)
// Offset.zero & Size(params.chartWidth, params.chartHeight),
// Paint()..color = Colors.yellow[100]!,
// );
canvas.translate(params.xShift, 0);
for (int i = 0; i < params.candles.length; i++) {
_drawSingleDay(canvas, params, i);
}
canvas.restore();
// Draw tap highlight & overlay
if (params.tapPosition != null) {
if (params.tapPosition!.dx < params.chartWidth) {
_drawTapHighlightAndOverlay(canvas, params);
}
}
}
void _drawTimeLabels(canvas, PainterParams params) {
// We draw one time label per 90 pixels of screen width
final lineCount = params.chartWidth ~/ 90;
final gap = 1 / (lineCount + 1);
for (int i = 1; i <= lineCount; i++) {
double x = i * gap * params.chartWidth;
final index = params.getCandleIndexFromOffset(x);
if (index < params.candles.length) {
final candle = params.candles[index];
final visibleDataCount = params.candles.length;
final timeTp = TextPainter(
text: TextSpan(
text: getTimeLabel(candle.timestamp, visibleDataCount),
style: params.style.timeLabelStyle,
),
)
..textDirection = TextDirection.ltr
..layout();
// Align texts towards vertical bottom
final topPadding = params.style.timeLabelHeight - timeTp.height;
timeTp.paint(
canvas,
Offset(x - timeTp.width / 2, params.chartHeight + topPadding),
);
}
}
}
void _drawPriceGridAndLabels(canvas, PainterParams params) {
[0.0, 0.25, 0.5, 0.75, 1.0]
.map((v) => ((params.maxPrice - params.minPrice) * v) + params.minPrice)
.forEach((y) {
canvas.drawLine(
Offset(0, params.fitPrice(y)),
Offset(params.chartWidth, params.fitPrice(y)),
Paint()
..strokeWidth = 0.5
..color = params.style.priceGridLineColor,
);
final priceTp = TextPainter(
text: TextSpan(
text: getPriceLabel(y),
style: params.style.priceLabelStyle,
),
)
..textDirection = TextDirection.ltr
..layout();
priceTp.paint(
canvas,
Offset(
params.chartWidth + 4,
params.fitPrice(y) - priceTp.height / 2,
));
});
}
void _drawSingleDay(canvas, PainterParams params, int i) {
final candle = params.candles[i];
final x = i * params.candleWidth;
final thickWidth = max(params.candleWidth * 0.8, 0.8);
final thinWidth = max(params.candleWidth * 0.2, 0.2);
// Draw price bar
final open = candle.open;
final close = candle.close;
final high = candle.high;
final low = candle.low;
if (open != null && close != null) {
final color = open > close
? params.style.priceLossColor
: params.style.priceGainColor;
canvas.drawLine(
Offset(x, params.fitPrice(open)),
Offset(x, params.fitPrice(close)),
Paint()
..strokeWidth = thickWidth
..color = color,
);
if (high != null && low != null) {
canvas.drawLine(
Offset(x, params.fitPrice(high)),
Offset(x, params.fitPrice(low)),
Paint()
..strokeWidth = thinWidth
..color = color,
);
}
}
// Draw volume bar
final volume = candle.volume;
if (volume != null) {
canvas.drawLine(
Offset(x, params.chartHeight),
Offset(x, params.fitVolume(volume)),
Paint()
..strokeWidth = thickWidth
..color = params.style.volumeColor,
);
}
// Draw trend line
for (int j = 0; j < candle.trends.length; j++) {
final trendLinePaint = params.style.trendLineStyles.at(j) ??
(Paint()
..strokeWidth = 2.0
..strokeCap = StrokeCap.round
..color = Colors.blue);
final pt = candle.trends.at(j); // current data point
final prevPt = params.candles.at(i - 1)?.trends.at(j);
if (pt != null && prevPt != null) {
canvas.drawLine(
Offset(x - params.candleWidth, params.fitPrice(prevPt)),
Offset(x, params.fitPrice(pt)),
trendLinePaint,
);
}
if (i == 0) {
// In the front, draw an extra line connecting to out-of-window data
if (pt != null && params.leadingTrends?.at(j) != null) {
canvas.drawLine(
Offset(x - params.candleWidth,
params.fitPrice(params.leadingTrends!.at(j)!)),
Offset(x, params.fitPrice(pt)),
trendLinePaint,
);
}
} else if (i == params.candles.length - 1) {
// At the end, draw an extra line connecting to out-of-window data
if (pt != null && params.trailingTrends?.at(j) != null) {
canvas.drawLine(
Offset(x, params.fitPrice(pt)),
Offset(
x + params.candleWidth,
params.fitPrice(params.trailingTrends!.at(j)!),
),
trendLinePaint,
);
}
}
}
}
void _drawTapHighlightAndOverlay(canvas, PainterParams params) {
final pos = params.tapPosition!;
final i = params.getCandleIndexFromOffset(pos.dx);
final candle = params.candles[i];
canvas.save();
canvas.translate(params.xShift, 0.0);
// Draw highlight bar (selection box)
canvas.drawLine(
Offset(i * params.candleWidth, 0.0),
Offset(i * params.candleWidth, params.chartHeight),
Paint()
..strokeWidth = max(params.candleWidth * 0.88, 1.0)
..color = params.style.selectionHighlightColor);
canvas.restore();
// Draw info pane
_drawTapInfoOverlay(canvas, params, candle);
}
void _drawTapInfoOverlay(canvas, PainterParams params, CandleData candle) {
final xGap = 8.0;
final yGap = 4.0;
TextPainter makeTP(String text) => TextPainter(
text: TextSpan(
text: text,
style: params.style.overlayTextStyle,
),
)
..textDirection = TextDirection.ltr
..layout();
final info = getOverlayInfo(candle);
if (info.isEmpty) return;
final labels = info.keys.map((text) => makeTP(text)).toList();
final values = info.values.map((text) => makeTP(text)).toList();
final labelsMaxWidth = labels.map((tp) => tp.width).reduce(max);
final valuesMaxWidth = values.map((tp) => tp.width).reduce(max);
final panelWidth = labelsMaxWidth + valuesMaxWidth + xGap * 3;
final panelHeight = max(
labels.map((tp) => tp.height).reduce((a, b) => a + b),
values.map((tp) => tp.height).reduce((a, b) => a + b),
) +
yGap * (values.length + 1);
// Shift the canvas, so the overlay panel can appear near touch position.
canvas.save();
final pos = params.tapPosition!;
final fingerSize = 32.0; // leave some margin around user's finger
double dx, dy;
assert(params.size.width >= panelWidth, "Overlay panel is too wide.");
if (pos.dx <= params.size.width / 2) {
// If user touches the left-half of the screen,
// we show the overlay panel near finger touch position, on the right.
dx = pos.dx + fingerSize;
} else {
// Otherwise we show panel on the left of the finger touch position.
dx = pos.dx - panelWidth - fingerSize;
}
dx = dx.clamp(0, params.size.width - panelWidth);
dy = pos.dy - panelHeight - fingerSize;
if (dy < 0) dy = 0.0;
canvas.translate(dx, dy);
// Draw the background for overlay panel
canvas.drawRRect(
RRect.fromRectAndRadius(
Offset.zero & Size(panelWidth, panelHeight),
Radius.circular(8),
),
Paint()..color = params.style.overlayBackgroundColor);
// Draw texts
var y = 0.0;
for (int i = 0; i < labels.length; i++) {
y += yGap;
final rowHeight = max(labels[i].height, values[i].height);
// Draw labels (left align, vertical center)
final labelY = y + (rowHeight - labels[i].height) / 2; // vertical center
labels[i].paint(canvas, Offset(xGap, labelY));
// Draw values (right align, vertical center)
final leading = valuesMaxWidth - values[i].width; // right align
final valueY = y + (rowHeight - values[i].height) / 2; // vertical center
values[i].paint(
canvas,
Offset(labelsMaxWidth + xGap * 2 + leading, valueY),
);
y += rowHeight;
}
canvas.restore();
}
@override
bool shouldRepaint(ChartPainter oldDelegate) =>
params.shouldRepaint(oldDelegate.params);
}
extension ElementAtOrNull<E> on List<E> {
E? at(int index) {
if (index < 0 || index >= length) return null;
return elementAt(index);
}
}
================================================
FILE: lib/src/chart_style.dart
================================================
import 'package:flutter/material.dart';
class ChartStyle {
/// The percentage height of volume.
///
/// Defaults to 0.2, which means volume bars will be 20% of total height,
/// thus leaving price bars to be 80% of the total height.
final double volumeHeightFactor;
/// The padding on the right-side of the chart.
final double priceLabelWidth;
/// The padding on the bottom-side of the chart.
///
/// Defaults to 24.0, date/time labels is drawn vertically bottom-aligned,
/// thus adjusting this value would also control the padding between
/// the chart and the date/time labels.
final double timeLabelHeight;
/// The style of date/time labels (on the bottom of the chart).
final TextStyle timeLabelStyle;
/// The style of price labels (on the right of the chart).
final TextStyle priceLabelStyle;
/// The style of overlay texts. These texts are drawn on top of the
/// background color specified in [overlayBackgroundColor].
///
/// This appears when user clicks on the chart.
final TextStyle overlayTextStyle;
/// The color to use when the `close` price is higher than `open` price.
final Color priceGainColor;
/// The color to use when the `close` price is lower than `open` price.
final Color priceLossColor;
/// The color of the `volume` bars.
final Color volumeColor;
/// The style of trend lines. If there are multiple lines, their styles will
/// be chosen in the order of appearance in this list. If this list is shorter
/// than the number of trend lines, a default blue paint will be applied.
final List<Paint> trendLineStyles;
/// The color of the price grid line.
final Color priceGridLineColor;
/// The highlight color. This appears when user clicks on the chart.
final Color selectionHighlightColor;
/// The background color of the overlay.
///
/// This appears when user clicks on the chart.
final Color overlayBackgroundColor;
const ChartStyle({
this.volumeHeightFactor = 0.2,
this.priceLabelWidth = 48.0,
this.timeLabelHeight = 24.0,
this.timeLabelStyle = const TextStyle(
fontSize: 16,
color: Colors.grey,
),
this.priceLabelStyle = const TextStyle(
fontSize: 12,
color: Colors.grey,
),
this.overlayTextStyle = const TextStyle(
fontSize: 16,
color: Colors.white,
),
this.priceGainColor = Colors.green,
this.priceLossColor = Colors.red,
this.volumeColor = Colors.grey,
this.trendLineStyles = const [],
this.priceGridLineColor = Colors.grey,
this.selectionHighlightColor = const Color(0x33757575),
this.overlayBackgroundColor = const Color(0xEE757575),
});
}
================================================
FILE: lib/src/interactive_chart.dart
================================================
import 'dart:math';
import 'package:flutter/gestures.dart';
import 'package:flutter/widgets.dart';
import 'package:intl/intl.dart' as intl;
import 'candle_data.dart';
import 'chart_painter.dart';
import 'chart_style.dart';
import 'painter_params.dart';
class InteractiveChart extends StatefulWidget {
/// The full list of [CandleData] to be used for this chart.
///
/// It needs to have at least 3 data points. If data is sufficiently large,
/// the chart will default to display the most recent 90 data points when
/// first opened (configurable with [initialVisibleCandleCount] parameter),
/// and allow users to freely zoom and pan however they like.
final List<CandleData> candles;
/// The default number of data points to be displayed when the chart is first
/// opened. The default value is 90. If [CandleData] does not have enough data
/// points, the chart will display all of them.
final int initialVisibleCandleCount;
/// If non-null, the style to use for this chart.
final ChartStyle style;
/// How the date/time label at the bottom are displayed.
///
/// If null, it defaults to use yyyy-mm format if more than 20 data points
/// are visible in the current chart window, otherwise it uses mm-dd format.
final TimeLabelGetter? timeLabel;
/// How the price labels on the right are displayed.
///
/// If null, it defaults to show 2 digits after the decimal point.
final PriceLabelGetter? priceLabel;
/// How the overlay info are displayed, when user touches the chart.
///
/// If null, it defaults to display `date`, `open`, `high`, `low`, `close`
/// and `volume` fields when user selects a data point in the chart.
///
/// To customize it, pass in a function that returns a Map<String,String>:
/// ```dart
/// return {
/// "Date": "Customized date string goes here",
/// "Open": candle.open?.toStringAsFixed(2) ?? "-",
/// "Close": candle.close?.toStringAsFixed(2) ?? "-",
/// };
/// ```
final OverlayInfoGetter? overlayInfo;
/// An optional event, fired when the user clicks on a candlestick.
final ValueChanged<CandleData>? onTap;
/// An optional event, fired when user zooms in/out.
///
/// This provides the width of a candlestick at the current zoom level.
final ValueChanged<double>? onCandleResize;
const InteractiveChart({
Key? key,
required this.candles,
this.initialVisibleCandleCount = 90,
ChartStyle? style,
this.timeLabel,
this.priceLabel,
this.overlayInfo,
this.onTap,
this.onCandleResize,
}) : this.style = style ?? const ChartStyle(),
assert(candles.length >= 3,
"InteractiveChart requires 3 or more CandleData"),
assert(initialVisibleCandleCount >= 3,
"initialVisibleCandleCount must be more 3 or more"),
super(key: key);
@override
_InteractiveChartState createState() => _InteractiveChartState();
}
class _InteractiveChartState extends State<InteractiveChart> {
// The width of an individual bar in the chart.
late double _candleWidth;
// The x offset (in px) of current visible chart window,
// measured against the beginning of the chart.
// i.e. a value of 0.0 means we are displaying data for the very first day,
// and a value of 20 * _candleWidth would be skipping the first 20 days.
late double _startOffset;
// The position that user is currently tapping, null if user let go.
Offset? _tapPosition;
double? _prevChartWidth; // used by _handleResize
late double _prevCandleWidth;
late double _prevStartOffset;
late Offset _initialFocalPoint;
PainterParams? _prevParams; // used in onTapUp event
@override
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints constraints) {
final size = constraints.biggest;
final w = size.width - widget.style.priceLabelWidth;
_handleResize(w);
// Find the visible data range
final int start = (_startOffset / _candleWidth).floor();
final int count = (w / _candleWidth).ceil();
final int end = (start + count).clamp(start, widget.candles.length);
final candlesInRange = widget.candles.getRange(start, end).toList();
if (end < widget.candles.length) {
// Put in an extra item, since it can become visible when scrolling
final nextItem = widget.candles[end];
candlesInRange.add(nextItem);
}
// If possible, find neighbouring trend line data,
// so the chart could draw better-connected lines
final leadingTrends = widget.candles.at(start - 1)?.trends;
final trailingTrends = widget.candles.at(end + 1)?.trends;
// Find the horizontal shift needed when drawing the candles.
// First, always shift the chart by half a candle, because when we
// draw a line using a thick paint, it spreads to both sides.
// Then, we find out how much "fraction" of a candle is visible, since
// when users scroll, they don't always stop at exact intervals.
final halfCandle = _candleWidth / 2;
final fractionCandle = _startOffset - start * _candleWidth;
final xShift = halfCandle - fractionCandle;
// Calculate min and max among the visible data
double? highest(CandleData c) {
if (c.high != null) return c.high;
if (c.open != null && c.close != null) return max(c.open!, c.close!);
return c.open ?? c.close;
}
double? lowest(CandleData c) {
if (c.low != null) return c.low;
if (c.open != null && c.close != null) return min(c.open!, c.close!);
return c.open ?? c.close;
}
final maxPrice =
candlesInRange.map(highest).whereType<double>().reduce(max);
final minPrice =
candlesInRange.map(lowest).whereType<double>().reduce(min);
final maxVol = candlesInRange
.map((c) => c.volume)
.whereType<double>()
.fold(double.negativeInfinity, max);
final minVol = candlesInRange
.map((c) => c.volume)
.whereType<double>()
.fold(double.infinity, min);
final child = TweenAnimationBuilder(
tween: PainterParamsTween(
end: PainterParams(
candles: candlesInRange,
style: widget.style,
size: size,
candleWidth: _candleWidth,
startOffset: _startOffset,
maxPrice: maxPrice,
minPrice: minPrice,
maxVol: maxVol,
minVol: minVol,
xShift: xShift,
tapPosition: _tapPosition,
leadingTrends: leadingTrends,
trailingTrends: trailingTrends,
),
),
duration: Duration(milliseconds: 300),
curve: Curves.easeOut,
builder: (_, PainterParams params, __) {
_prevParams = params;
return RepaintBoundary(
child: CustomPaint(
size: size,
painter: ChartPainter(
params: params,
getTimeLabel: widget.timeLabel ?? defaultTimeLabel,
getPriceLabel: widget.priceLabel ?? defaultPriceLabel,
getOverlayInfo: widget.overlayInfo ?? defaultOverlayInfo,
),
),
);
},
);
return Listener(
onPointerSignal: (signal) {
if (signal is PointerScrollEvent) {
final dy = signal.scrollDelta.dy;
if (dy.abs() > 0) {
_onScaleStart(signal.position);
_onScaleUpdate(
dy > 0 ? 0.9 : 1.1,
signal.position,
w,
);
}
}
},
child: GestureDetector(
// Tap and hold to view candle details
onTapDown: (details) => setState(() {
_tapPosition = details.localPosition;
}),
onTapCancel: () => setState(() => _tapPosition = null),
onTapUp: (_) {
// Fire callback event and reset _tapPosition
if (widget.onTap != null) _fireOnTapEvent();
setState(() => _tapPosition = null);
},
// Pan and zoom
onScaleStart: (details) => _onScaleStart(details.localFocalPoint),
onScaleUpdate: (details) =>
_onScaleUpdate(details.scale, details.localFocalPoint, w),
child: child,
),
);
},
);
}
_onScaleStart(Offset focalPoint) {
_prevCandleWidth = _candleWidth;
_prevStartOffset = _startOffset;
_initialFocalPoint = focalPoint;
}
_onScaleUpdate(double scale, Offset focalPoint, double w) {
// Handle zoom
final candleWidth = (_prevCandleWidth * scale)
.clamp(_getMinCandleWidth(w), _getMaxCandleWidth(w));
final clampedScale = candleWidth / _prevCandleWidth;
var startOffset = _prevStartOffset * clampedScale;
// Handle pan
final dx = (focalPoint - _initialFocalPoint).dx * -1;
startOffset += dx;
// Adjust pan when zooming
final double prevCount = w / _prevCandleWidth;
final double currCount = w / candleWidth;
final zoomAdjustment = (currCount - prevCount) * candleWidth;
final focalPointFactor = focalPoint.dx / w;
startOffset -= zoomAdjustment * focalPointFactor;
startOffset = startOffset.clamp(0, _getMaxStartOffset(w, candleWidth));
// Fire candle width resize event
if (candleWidth != _candleWidth) {
widget.onCandleResize?.call(candleWidth);
}
// Apply changes
setState(() {
_candleWidth = candleWidth;
_startOffset = startOffset;
});
}
_handleResize(double w) {
if (w == _prevChartWidth) return;
if (_prevChartWidth != null) {
// Re-clamp when size changes (e.g. screen rotation)
_candleWidth = _candleWidth.clamp(
_getMinCandleWidth(w),
_getMaxCandleWidth(w),
);
_startOffset = _startOffset.clamp(
0,
_getMaxStartOffset(w, _candleWidth),
);
} else {
// Default zoom level. Defaults to a 90 day chart, but configurable.
// If data is shorter, we use the whole range.
final count = min(
widget.candles.length,
widget.initialVisibleCandleCount,
);
_candleWidth = w / count;
// Default show the latest available data, e.g. the most recent 90 days.
_startOffset = (widget.candles.length - count) * _candleWidth;
}
_prevChartWidth = w;
}
// The narrowest candle width, i.e. when drawing all available data points.
double _getMinCandleWidth(double w) => w / widget.candles.length;
// The widest candle width, e.g. when drawing 14 day chart
double _getMaxCandleWidth(double w) => w / min(14, widget.candles.length);
// Max start offset: how far can we scroll towards the end of the chart
double _getMaxStartOffset(double w, double candleWidth) {
final count = w / candleWidth; // visible candles in the window
final start = widget.candles.length - count;
return max(0, candleWidth * start);
}
String defaultTimeLabel(int timestamp, int visibleDataCount) {
final date = DateTime.fromMillisecondsSinceEpoch(timestamp)
.toIso8601String()
.split("T")
.first
.split("-");
if (visibleDataCount > 20) {
// If more than 20 data points are visible, we should show year and month.
return "${date[0]}-${date[1]}"; // yyyy-mm
} else {
// Otherwise, we should show month and date.
return "${date[1]}-${date[2]}"; // mm-dd
}
}
String defaultPriceLabel(double price) => price.toStringAsFixed(2);
Map<String, String> defaultOverlayInfo(CandleData candle) {
final date = intl.DateFormat.yMMMd()
.format(DateTime.fromMillisecondsSinceEpoch(candle.timestamp));
return {
"Date": date,
"Open": candle.open?.toStringAsFixed(2) ?? "-",
"High": candle.high?.toStringAsFixed(2) ?? "-",
"Low": candle.low?.toStringAsFixed(2) ?? "-",
"Close": candle.close?.toStringAsFixed(2) ?? "-",
"Volume": candle.volume?.asAbbreviated() ?? "-",
};
}
void _fireOnTapEvent() {
if (_prevParams == null || _tapPosition == null) return;
final params = _prevParams!;
final dx = _tapPosition!.dx;
final selected = params.getCandleIndexFromOffset(dx);
final candle = params.candles[selected];
widget.onTap?.call(candle);
}
}
extension Formatting on double {
String asPercent() {
final format = this < 100 ? "##0.00" : "#,###";
final v = intl.NumberFormat(format, "en_US").format(this);
return "${this >= 0 ? '+' : ''}$v%";
}
String asAbbreviated() {
if (this < 1000) return this.toStringAsFixed(3);
if (this >= 1e18) return this.toStringAsExponential(3);
final s = intl.NumberFormat("#,###", "en_US").format(this).split(",");
const suffixes = ["K", "M", "B", "T", "Q"];
return "${s[0]}.${s[1]}${suffixes[s.length - 2]}";
}
}
================================================
FILE: lib/src/painter_params.dart
================================================
import 'dart:ui';
import 'package:flutter/widgets.dart';
import 'chart_style.dart';
import 'candle_data.dart';
class PainterParams {
final List<CandleData> candles;
final ChartStyle style;
final Size size;
final double candleWidth;
final double startOffset;
final double maxPrice;
final double minPrice;
final double maxVol;
final double minVol;
final double xShift;
final Offset? tapPosition;
final List<double?>? leadingTrends;
final List<double?>? trailingTrends;
PainterParams({
required this.candles,
required this.style,
required this.size,
required this.candleWidth,
required this.startOffset,
required this.maxPrice,
required this.minPrice,
required this.maxVol,
required this.minVol,
required this.xShift,
required this.tapPosition,
required this.leadingTrends,
required this.trailingTrends,
});
double get chartWidth => // width without price labels
size.width - style.priceLabelWidth;
double get chartHeight => // height without time labels
size.height - style.timeLabelHeight;
double get volumeHeight => chartHeight * style.volumeHeightFactor;
double get priceHeight => chartHeight - volumeHeight;
int getCandleIndexFromOffset(double x) {
final adjustedPos = x - xShift + candleWidth / 2;
final i = adjustedPos ~/ candleWidth;
return i;
}
double fitPrice(double y) =>
priceHeight * (maxPrice - y) / (maxPrice - minPrice);
double fitVolume(double y) {
final gap = 12; // the gap between price bars and volume bars
final baseAmount = 2; // display at least "something" for the lowest volume
if (maxVol == minVol) {
// Apparently max and min values (in the current visible range, at least)
// are the same. It's likely they passed in a bunch of zeroes, because
// they don't have real volume data or don't want to draw volumes.
assert(() {
if (style.volumeHeightFactor != 0) {
print('If you do not want to show volumes, '
'make sure to set `volumeHeightFactor` (ChartStyle) to zero.');
}
return true;
}());
// Since they are equal, we just draw all volume bars as half height.
return priceHeight + volumeHeight / 2;
}
final volGridSize = (volumeHeight - baseAmount - gap) / (maxVol - minVol);
final vol = (y - minVol) * volGridSize;
return volumeHeight - vol + priceHeight - baseAmount;
}
static PainterParams lerp(PainterParams a, PainterParams b, double t) {
double lerpField(double getField(PainterParams p)) =>
lerpDouble(getField(a), getField(b), t)!;
return PainterParams(
candles: b.candles,
style: b.style,
size: b.size,
candleWidth: b.candleWidth,
startOffset: b.startOffset,
maxPrice: lerpField((p) => p.maxPrice),
minPrice: lerpField((p) => p.minPrice),
maxVol: lerpField((p) => p.maxVol),
minVol: lerpField((p) => p.minVol),
xShift: b.xShift,
tapPosition: b.tapPosition,
leadingTrends: b.leadingTrends,
trailingTrends: b.trailingTrends,
);
}
bool shouldRepaint(PainterParams other) {
if (candles.length != other.candles.length) return true;
if (size != other.size ||
candleWidth != other.candleWidth ||
startOffset != other.startOffset ||
xShift != other.xShift) return true;
if (maxPrice != other.maxPrice ||
minPrice != other.minPrice ||
maxVol != other.maxVol ||
minVol != other.minVol) return true;
if (tapPosition != other.tapPosition) return true;
if (leadingTrends != other.leadingTrends ||
trailingTrends != other.trailingTrends) return true;
if (style != other.style) return true;
return false;
}
}
class PainterParamsTween extends Tween<PainterParams> {
PainterParamsTween({
PainterParams? begin,
required PainterParams end,
}) : super(begin: begin, end: end);
@override
PainterParams lerp(double t) => PainterParams.lerp(begin ?? end!, end!, t);
}
================================================
FILE: pubspec.yaml
================================================
name: interactive_chart
description: A candlestick chart that supports hand gestures such as pinch-to-zoom and panning.
version: 0.3.6
homepage: https://github.com/h65wang/flutter-interactive-chart
environment:
sdk: ">=2.12.0 <4.0.0"
flutter: ">=2.0.0"
dependencies:
flutter:
sdk: flutter
intl: ">=0.17.0 <0.21.0"
dev_dependencies:
flutter_lints:
flutter_test:
sdk: flutter
gitextract_944_aqv9/ ├── .github/ │ └── workflows/ │ ├── publish.yml │ ├── publishable.yml │ └── runnable.yml ├── .gitignore ├── .metadata ├── CHANGELOG.md ├── CODEOWNERS ├── LICENSE ├── README.md ├── example/ │ ├── .gitignore │ ├── .metadata │ ├── README.md │ ├── analysis_options.yaml │ ├── lib/ │ │ ├── main.dart │ │ └── mock_data.dart │ ├── pubspec.yaml │ └── web/ │ ├── index.html │ └── manifest.json ├── lib/ │ ├── interactive_chart.dart │ └── src/ │ ├── candle_data.dart │ ├── chart_painter.dart │ ├── chart_style.dart │ ├── interactive_chart.dart │ └── painter_params.dart └── pubspec.yaml
SYMBOL INDEX (49 symbols across 7 files)
FILE: example/lib/main.dart
function main (line 6) | void main()
class MyApp (line 10) | class MyApp extends StatefulWidget {
method createState (line 14) | State<MyApp> createState()
class _MyAppState (line 17) | class _MyAppState extends State<MyApp> {
method build (line 23) | Widget build(BuildContext context)
method _computeTrendLines (line 102) | void _computeTrendLines()
method _removeTrendLines (line 112) | void _removeTrendLines()
FILE: example/lib/mock_data.dart
class MockDataTesla (line 3) | class MockDataTesla {
FILE: lib/src/candle_data.dart
class CandleData (line 1) | class CandleData {
method computeMA (line 49) | List<double?> computeMA(List<CandleData> data, [int period = 7])
method toString (line 75) | String toString()
FILE: lib/src/chart_painter.dart
type TimeLabelGetter (line 8) | typedef TimeLabelGetter = String Function(int timestamp, int visibleData...
type PriceLabelGetter (line 9) | typedef PriceLabelGetter = String Function(double price);
type OverlayInfoGetter (line 10) | typedef OverlayInfoGetter = Map<String, String> Function(CandleData cand...
class ChartPainter (line 12) | class ChartPainter extends CustomPainter {
method paint (line 26) | void paint(Canvas canvas, Size size)
method _drawTimeLabels (line 53) | void _drawTimeLabels(canvas, PainterParams params)
method _drawPriceGridAndLabels (line 82) | void _drawPriceGridAndLabels(canvas, PainterParams params)
method _drawSingleDay (line 110) | void _drawSingleDay(canvas, PainterParams params, int i)
method _drawTapHighlightAndOverlay (line 195) | void _drawTapHighlightAndOverlay(canvas, PainterParams params)
method _drawTapInfoOverlay (line 213) | void _drawTapInfoOverlay(canvas, PainterParams params, CandleData candle)
method makeTP (line 217) | TextPainter makeTP(String text)
method shouldRepaint (line 290) | bool shouldRepaint(ChartPainter oldDelegate)
function at (line 295) | E? at(int index)
FILE: lib/src/chart_style.dart
class ChartStyle (line 3) | class ChartStyle {
FILE: lib/src/interactive_chart.dart
class InteractiveChart (line 12) | class InteractiveChart extends StatefulWidget {
method createState (line 81) | _InteractiveChartState createState()
class _InteractiveChartState (line 84) | class _InteractiveChartState extends State<InteractiveChart> {
method build (line 104) | Widget build(BuildContext context)
method highest (line 137) | double? highest(CandleData c)
method lowest (line 143) | double? lowest(CandleData c)
method _getMinCandleWidth (line 294) | double _getMinCandleWidth(double w)
method _getMaxCandleWidth (line 297) | double _getMaxCandleWidth(double w)
method _getMaxStartOffset (line 300) | double _getMaxStartOffset(double w, double candleWidth)
method defaultTimeLabel (line 306) | String defaultTimeLabel(int timestamp, int visibleDataCount)
method defaultPriceLabel (line 322) | String defaultPriceLabel(double price)
method defaultOverlayInfo (line 324) | Map<String, String> defaultOverlayInfo(CandleData candle)
method _fireOnTapEvent (line 337) | void _fireOnTapEvent()
function asPercent (line 348) | String asPercent()
function asAbbreviated (line 354) | String asAbbreviated()
FILE: lib/src/painter_params.dart
class PainterParams (line 7) | class PainterParams {
method getCandleIndexFromOffset (line 50) | int getCandleIndexFromOffset(double x)
method fitPrice (line 56) | double fitPrice(double y)
method fitVolume (line 59) | double fitVolume(double y)
method lerp (line 83) | PainterParams lerp(PainterParams a, PainterParams b, double t)
method lerpField (line 84) | double lerpField(double getField(PainterParams p))
method shouldRepaint (line 103) | bool shouldRepaint(PainterParams other)
class PainterParamsTween (line 127) | class PainterParamsTween extends Tween<PainterParams> {
method lerp (line 134) | PainterParams lerp(double t)
Condensed preview — 25 files, each showing path, character count, and a content snippet. Download the .json file or copy for the full structured content (92K chars).
[
{
"path": ".github/workflows/publish.yml",
"chars": 390,
"preview": "name: Publish\n\non:\n release:\n types: [ published ]\n workflow_dispatch:\n\njobs:\n publish:\n runs-on: ubuntu-latest"
},
{
"path": ".github/workflows/publishable.yml",
"chars": 522,
"preview": "name: Publishable\n\non:\n push:\n branches:\n - main\n - master\n pull_request:\n branches:\n - main\n "
},
{
"path": ".github/workflows/runnable.yml",
"chars": 915,
"preview": "name: Runnable (stable)\n\non:\n push:\n branches:\n - main\n - master\n paths-ignore:\n - \"**.md\"\n pull_"
},
{
"path": ".gitignore",
"chars": 1518,
"preview": "# Miscellaneous\n*.class\n*.log\n*.pyc\n*.swp\n.DS_Store\n.atom/\n.buildlog/\n.history\n.svn/\n\n# IntelliJ related\n*.iml\n*.ipr\n*.i"
},
{
"path": ".metadata",
"chars": 309,
"preview": "# This file tracks properties of this Flutter project.\n# Used by Flutter tool to assess capabilities and perform upgrade"
},
{
"path": "CHANGELOG.md",
"chars": 1987,
"preview": "## 0.3.6\n\n* Update dependency: intl to ^0.20.0.\n\n## 0.3.5\n\n* Update dependency: intl to ^0.19.0.\n\n## 0.3.4\n\n* Fix a pote"
},
{
"path": "CODEOWNERS",
"chars": 11,
"preview": "* @h65wang\n"
},
{
"path": "LICENSE",
"chars": 1064,
"preview": "MIT License\n\nCopyright (c) 2021 h65wang\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof"
},
{
"path": "README.md",
"chars": 756,
"preview": "# interactive_chart\n\nA candlestick chart that supports pinch-to-zoom and panning.\n\n## Dark mode\n\n![pan](https://raw.gith"
},
{
"path": "example/.gitignore",
"chars": 745,
"preview": "# Miscellaneous\n*.class\n*.log\n*.pyc\n*.swp\n.DS_Store\n.atom/\n.buildlog/\n.history\n.svn/\n\n# IntelliJ related\n*.iml\n*.ipr\n*.i"
},
{
"path": "example/.metadata",
"chars": 964,
"preview": "# This file tracks properties of this Flutter project.\n# Used by Flutter tool to assess capabilities and perform upgrade"
},
{
"path": "example/README.md",
"chars": 537,
"preview": "# example\n\nA new Flutter project.\n\n## Getting Started\n\nThis project is a starting point for a Flutter application.\n\nA fe"
},
{
"path": "example/analysis_options.yaml",
"chars": 1420,
"preview": "# This file configures the analyzer, which statically analyzes Dart code to\n# check for errors, warnings, and lints.\n#\n#"
},
{
"path": "example/lib/main.dart",
"chars": 3976,
"preview": "import 'package:flutter/material.dart';\nimport 'package:interactive_chart/interactive_chart.dart';\n\nimport 'mock_data.da"
},
{
"path": "example/lib/mock_data.dart",
"chars": 37427,
"preview": "import 'package:interactive_chart/interactive_chart.dart';\n\nclass MockDataTesla {\n static const List<dynamic> _rawData "
},
{
"path": "example/pubspec.yaml",
"chars": 277,
"preview": "name: example\ndescription: A new Flutter project.\npublish_to: 'none'\n\nenvironment:\n sdk: ^3.0.0\n\ndependencies:\n flutte"
},
{
"path": "example/web/index.html",
"chars": 1212,
"preview": "<!DOCTYPE html>\n<html>\n<head>\n <!--\n If you are serving your web app in a path other than the root, change the\n h"
},
{
"path": "example/web/manifest.json",
"chars": 910,
"preview": "{\n \"name\": \"example\",\n \"short_name\": \"example\",\n \"start_url\": \".\",\n \"display\": \"standalone\",\n \"background"
},
{
"path": "lib/interactive_chart.dart",
"chars": 99,
"preview": "export 'src/candle_data.dart';\nexport 'src/interactive_chart.dart';\nexport 'src/chart_style.dart';\n"
},
{
"path": "lib/src/candle_data.dart",
"chars": 2941,
"preview": "class CandleData {\n /// The timestamp of this data point, in milliseconds since epoch.\n final int timestamp;\n\n /// Th"
},
{
"path": "lib/src/chart_painter.dart",
"chars": 9895,
"preview": "import 'dart:math';\n\nimport 'package:flutter/material.dart';\n\nimport 'candle_data.dart';\nimport 'painter_params.dart';\n\n"
},
{
"path": "lib/src/chart_style.dart",
"chars": 2674,
"preview": "import 'package:flutter/material.dart';\n\nclass ChartStyle {\n /// The percentage height of volume.\n ///\n /// Defaults "
},
{
"path": "lib/src/interactive_chart.dart",
"chars": 13177,
"preview": "import 'dart:math';\n\nimport 'package:flutter/gestures.dart';\nimport 'package:flutter/widgets.dart';\nimport 'package:intl"
},
{
"path": "lib/src/painter_params.dart",
"chars": 4058,
"preview": "import 'dart:ui';\nimport 'package:flutter/widgets.dart';\n\nimport 'chart_style.dart';\nimport 'candle_data.dart';\n\nclass P"
},
{
"path": "pubspec.yaml",
"chars": 397,
"preview": "name: interactive_chart\ndescription: A candlestick chart that supports hand gestures such as pinch-to-zoom and panning.\n"
}
]
About this extraction
This page contains the full source code of the fluttercandies/flutter-interactive-chart GitHub repository, extracted and formatted as plain text for AI agents and large language models (LLMs). The extraction includes 25 files (86.1 KB), approximately 33.5k tokens, and a symbol index with 49 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.