├── .gitignore ├── .metadata ├── CHANGELOG.md ├── LICENSE ├── README.md ├── example ├── .gitignore ├── .metadata ├── README.md ├── android │ ├── .gitignore │ ├── app │ │ ├── build.gradle │ │ └── src │ │ │ ├── debug │ │ │ └── AndroidManifest.xml │ │ │ ├── main │ │ │ ├── AndroidManifest.xml │ │ │ ├── kotlin │ │ │ │ └── com │ │ │ │ │ └── textcompositionexample │ │ │ │ │ └── example │ │ │ │ │ └── MainActivity.kt │ │ │ └── res │ │ │ │ ├── drawable-v21 │ │ │ │ └── launch_background.xml │ │ │ │ ├── drawable │ │ │ │ └── launch_background.xml │ │ │ │ ├── mipmap-hdpi │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-mdpi │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xhdpi │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xxhdpi │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xxxhdpi │ │ │ │ └── ic_launcher.png │ │ │ │ ├── values-night │ │ │ │ └── styles.xml │ │ │ │ └── values │ │ │ │ └── styles.xml │ │ │ └── profile │ │ │ └── AndroidManifest.xml │ ├── build.gradle │ ├── gradle.properties │ ├── gradle │ │ └── wrapper │ │ │ └── gradle-wrapper.properties │ └── settings.gradle ├── ios │ ├── .gitignore │ ├── Flutter │ │ ├── AppFrameworkInfo.plist │ │ ├── Debug.xcconfig │ │ └── Release.xcconfig │ ├── Runner.xcodeproj │ │ ├── project.pbxproj │ │ ├── project.xcworkspace │ │ │ ├── contents.xcworkspacedata │ │ │ └── xcshareddata │ │ │ │ ├── IDEWorkspaceChecks.plist │ │ │ │ └── WorkspaceSettings.xcsettings │ │ └── xcshareddata │ │ │ └── xcschemes │ │ │ └── Runner.xcscheme │ ├── Runner.xcworkspace │ │ ├── contents.xcworkspacedata │ │ └── xcshareddata │ │ │ ├── IDEWorkspaceChecks.plist │ │ │ └── WorkspaceSettings.xcsettings │ └── Runner │ │ ├── AppDelegate.swift │ │ ├── Assets.xcassets │ │ ├── AppIcon.appiconset │ │ │ ├── Contents.json │ │ │ ├── Icon-App-1024x1024@1x.png │ │ │ ├── Icon-App-20x20@1x.png │ │ │ ├── Icon-App-20x20@2x.png │ │ │ ├── Icon-App-20x20@3x.png │ │ │ ├── Icon-App-29x29@1x.png │ │ │ ├── Icon-App-29x29@2x.png │ │ │ ├── Icon-App-29x29@3x.png │ │ │ ├── Icon-App-40x40@1x.png │ │ │ ├── Icon-App-40x40@2x.png │ │ │ ├── Icon-App-40x40@3x.png │ │ │ ├── Icon-App-60x60@2x.png │ │ │ ├── Icon-App-60x60@3x.png │ │ │ ├── Icon-App-76x76@1x.png │ │ │ ├── Icon-App-76x76@2x.png │ │ │ └── Icon-App-83.5x83.5@2x.png │ │ └── LaunchImage.imageset │ │ │ ├── Contents.json │ │ │ ├── LaunchImage.png │ │ │ ├── LaunchImage@2x.png │ │ │ ├── LaunchImage@3x.png │ │ │ └── README.md │ │ ├── Base.lproj │ │ ├── LaunchScreen.storyboard │ │ └── Main.storyboard │ │ ├── Info.plist │ │ └── Runner-Bridging-Header.h ├── lib │ ├── first_chapter.dart │ └── main.dart ├── pubspec.lock ├── pubspec.yaml ├── web │ ├── favicon.png │ ├── icons │ │ ├── Icon-192.png │ │ └── Icon-512.png │ ├── index.html │ └── manifest.json └── windows │ ├── .gitignore │ ├── CMakeLists.txt │ ├── flutter │ ├── CMakeLists.txt │ ├── generated_plugin_registrant.cc │ ├── generated_plugin_registrant.h │ └── generated_plugins.cmake │ └── runner │ ├── CMakeLists.txt │ ├── Runner.rc │ ├── flutter_window.cpp │ ├── flutter_window.h │ ├── main.cpp │ ├── resource.h │ ├── resources │ └── app_icon.ico │ ├── run_loop.cpp │ ├── run_loop.h │ ├── runner.exe.manifest │ ├── utils.cpp │ ├── utils.h │ ├── win32_window.cpp │ └── win32_window.h ├── lib └── text_composition.dart ├── pubspec.lock ├── pubspec.yaml └── test ├── lwlizhe.dart └── text_composition_test.dart /.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.log 4 | *.pyc 5 | *.swp 6 | .DS_Store 7 | .atom/ 8 | .buildlog/ 9 | .history 10 | .svn/ 11 | 12 | # IntelliJ related 13 | *.iml 14 | *.ipr 15 | *.iws 16 | .idea/ 17 | 18 | # The .vscode folder contains launch configuration and tasks you configure in 19 | # VS Code which you may wish to be included in version control, so this line 20 | # is commented out by default. 21 | #.vscode/ 22 | 23 | # Flutter/Dart/Pub related 24 | **/doc/api/ 25 | .dart_tool/ 26 | .flutter-plugins 27 | .flutter-plugins-dependencies 28 | .packages 29 | .pub-cache/ 30 | .pub/ 31 | build/ 32 | 33 | # Android related 34 | **/android/**/gradle-wrapper.jar 35 | **/android/.gradle 36 | **/android/captures/ 37 | **/android/gradlew 38 | **/android/gradlew.bat 39 | **/android/local.properties 40 | **/android/**/GeneratedPluginRegistrant.java 41 | 42 | # iOS/XCode related 43 | **/ios/**/*.mode1v3 44 | **/ios/**/*.mode2v3 45 | **/ios/**/*.moved-aside 46 | **/ios/**/*.pbxuser 47 | **/ios/**/*.perspectivev3 48 | **/ios/**/*sync/ 49 | **/ios/**/.sconsign.dblite 50 | **/ios/**/.tags* 51 | **/ios/**/.vagrant/ 52 | **/ios/**/DerivedData/ 53 | **/ios/**/Icon? 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. 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If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # text_composition 2 | 3 | flutter 中文排版 分页 上下对齐 两端对齐 多栏布局 4 | 5 | 弃用richText，使用Canvas，精确定位绘图位置，消除字体对排版影响 6 | 7 | # 视频与截图 8 | 9 | ### demo https://github.com/mabDc/text_composition/releases/tag/0.0.5 10 | 11 | ### 视频 https://user-images.githubusercontent.com/19526331/112481313-d8258f00-8db1-11eb-8faf-d96a7188116a.mp4 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | ## 特点 22 | 23 | - [x] 中文英文符号混排两端对齐 24 | - [x] 支持非等高字体 25 | - [x] 支持非等宽字体 26 | - [x] 按容器高度分页 27 | - [x] 上下分散对齐 28 | - [x] 多栏布局 29 | - [x] 翻页切换动画 30 | - [x] 页面阴影 31 | - [x] 键盘响应 32 | - [x] 支持标题`title`与样式`titleStyle` 33 | - [x] 支持链接`link`和样式`linkStyle` 34 | - [ ] `link`点击事件 35 | - [ ] 图片 36 | 37 | ## example 38 | 39 | `/example/lib/main.dart` 40 | 41 | ~~字体会影响显示效果~~ 42 | 43 | 使用canvas绘图 不受字体影响 任意字体都可以上下对齐 两端对齐 44 | 45 | `windows`自带字体效果（非等宽 非等高） 46 | 47 | ![image](https://user-images.githubusercontent.com/19526331/109809275-145a4980-7c63-11eb-8d5e-f3a8047b54f8.png) 48 | 49 | 50 | `腾祥嘉丽.ttf`字体效果 51 | 52 | ![E3Z@FG25IXJ)I 6Y1(HDD$W](https://user-images.githubusercontent.com/19526331/109742072-5b1b5580-7c09-11eb-81d1-04e692424d35.png) 53 | 54 | 55 | ![$}C 5XZ6BHL_3X}HCSXHPGV](https://user-images.githubusercontent.com/19526331/109742094-666e8100-7c09-11eb-9c97-979a70c7222a.png) 56 | -------------------------------------------------------------------------------- /example/.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.log 4 | *.pyc 5 | *.swp 6 | .DS_Store 7 | .atom/ 8 | .buildlog/ 9 | .history 10 | .svn/ 11 | 12 | # IntelliJ related 13 | *.iml 14 | *.ipr 15 | *.iws 16 | .idea/ 17 | 18 | # The .vscode folder contains launch configuration and tasks you configure in 19 | # VS Code which you may wish to be included in version control, so this line 20 | # is commented out by default. 21 | #.vscode/ 22 | 23 | # Flutter/Dart/Pub related 24 | **/doc/api/ 25 | **/ios/Flutter/.last_build_id 26 | .dart_tool/ 27 | .flutter-plugins 28 | .flutter-plugins-dependencies 29 | .packages 30 | .pub-cache/ 31 | .pub/ 32 | /build/ 33 | 34 | # Web related 35 | lib/generated_plugin_registrant.dart 36 | 37 | # Symbolication related 38 | app.*.symbols 39 | 40 | # Obfuscation related 41 | app.*.map.json 42 | 43 | # Android Studio will place build artifacts here 44 | /android/app/debug 45 | /android/app/profile 46 | /android/app/release 47 | -------------------------------------------------------------------------------- /example/.metadata: -------------------------------------------------------------------------------- 1 | # This file tracks properties of this Flutter project. 2 | # Used by Flutter tool to assess capabilities and perform upgrades etc. 3 | # 4 | # This file should be version controlled and should not be manually edited. 5 | 6 | version: 7 | revision: 25134a16d128ed22dc0ad8d41d2b931fcad3b014 8 | channel: master 9 | 10 | project_type: app 11 | -------------------------------------------------------------------------------- /example/README.md: -------------------------------------------------------------------------------- 1 | # text_composition_example 2 | 3 | Demonstrates how to use the text_composition plugin. 4 | 5 | ## Getting Started 6 | 7 | This project is a starting point for a Flutter application. 8 | 9 | A few resources to get you started if this is your first Flutter project: 10 | 11 | - [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab) 12 | - [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook) 13 | 14 | For help getting started with Flutter, view our 15 | [online documentation](https://flutter.dev/docs), which offers tutorials, 16 | samples, guidance on mobile development, and a full API reference. 17 | -------------------------------------------------------------------------------- /example/android/.gitignore: -------------------------------------------------------------------------------- 1 | gradle-wrapper.jar 2 | /.gradle 3 | /captures/ 4 | /gradlew 5 | /gradlew.bat 6 | /local.properties 7 | GeneratedPluginRegistrant.java 8 | 9 | # Remember to never publicly share your keystore. 10 | # See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app 11 | key.properties 12 | -------------------------------------------------------------------------------- /example/android/app/build.gradle: -------------------------------------------------------------------------------- 1 | def localProperties = new Properties() 2 | def localPropertiesFile = rootProject.file('local.properties') 3 | if (localPropertiesFile.exists()) { 4 | localPropertiesFile.withReader('UTF-8') { reader -> 5 | localProperties.load(reader) 6 | } 7 | } 8 | 9 | def flutterRoot = localProperties.getProperty('flutter.sdk') 10 | if (flutterRoot == null) { 11 | throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") 12 | } 13 | 14 | def flutterVersionCode = localProperties.getProperty('flutter.versionCode') 15 | if (flutterVersionCode == null) { 16 | flutterVersionCode = '1' 17 | } 18 | 19 | def flutterVersionName = localProperties.getProperty('flutter.versionName') 20 | if (flutterVersionName == null) { 21 | flutterVersionName = '1.0' 22 | } 23 | 24 | apply plugin: 'com.android.application' 25 | apply plugin: 'kotlin-android' 26 | apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" 27 | 28 | android { 29 | compileSdkVersion 30 30 | 31 | sourceSets { 32 | main.java.srcDirs += 'src/main/kotlin' 33 | } 34 | 35 | defaultConfig { 36 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 37 | applicationId "com.textcompositionexample.example" 38 | minSdkVersion 16 39 | targetSdkVersion 30 40 | versionCode flutterVersionCode.toInteger() 41 | versionName flutterVersionName 42 | } 43 | 44 | buildTypes { 45 | release { 46 | // TODO: Add your own signing config for the release build. 47 | // Signing with the debug keys for now, so `flutter run --release` works. 48 | signingConfig signingConfigs.debug 49 | } 50 | } 51 | } 52 | 53 | flutter { 54 | source '../..' 55 | } 56 | 57 | dependencies { 58 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 59 | } 60 | -------------------------------------------------------------------------------- /example/android/app/src/debug/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 13 | 17 | 21 | 26 | 30 | 31 | 32 | 33 | 34 | 35 | 37 | 40 | 41 | 42 | -------------------------------------------------------------------------------- /example/android/app/src/main/kotlin/com/textcompositionexample/example/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.textcompositionexample.example 2 | 3 | import io.flutter.embedding.android.FlutterActivity 4 | 5 | class MainActivity: FlutterActivity() { 6 | } 7 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/drawable-v21/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/drawable/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/values-night/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 15 | 18 | 19 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 15 | 18 | 19 | -------------------------------------------------------------------------------- /example/android/app/src/profile/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/android/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | ext.kotlin_version = '1.3.50' 3 | repositories { 4 | google() 5 | jcenter() 6 | } 7 | 8 | dependencies { 9 | classpath 'com.android.tools.build:gradle:4.1.0' 10 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 11 | } 12 | } 13 | 14 | allprojects { 15 | repositories { 16 | google() 17 | jcenter() 18 | } 19 | } 20 | 21 | rootProject.buildDir = '../build' 22 | subprojects { 23 | project.buildDir = "${rootProject.buildDir}/${project.name}" 24 | } 25 | subprojects { 26 | project.evaluationDependsOn(':app') 27 | } 28 | 29 | task clean(type: Delete) { 30 | delete rootProject.buildDir 31 | } 32 | -------------------------------------------------------------------------------- /example/android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | android.useAndroidX=true 3 | android.enableJetifier=true 4 | -------------------------------------------------------------------------------- /example/android/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 23 08:50:38 CEST 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.6-all.zip 7 | -------------------------------------------------------------------------------- /example/android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | def localPropertiesFile = new File(rootProject.projectDir, "local.properties") 4 | def properties = new Properties() 5 | 6 | assert localPropertiesFile.exists() 7 | localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) } 8 | 9 | def flutterSdkPath = properties.getProperty("flutter.sdk") 10 | assert flutterSdkPath != null, "flutter.sdk not set in local.properties" 11 | apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle" 12 | -------------------------------------------------------------------------------- /example/ios/.gitignore: -------------------------------------------------------------------------------- 1 | *.mode1v3 2 | *.mode2v3 3 | *.moved-aside 4 | *.pbxuser 5 | *.perspectivev3 6 | **/*sync/ 7 | .sconsign.dblite 8 | .tags* 9 | **/.vagrant/ 10 | **/DerivedData/ 11 | Icon? 12 | **/Pods/ 13 | **/.symlinks/ 14 | profile 15 | xcuserdata 16 | **/.generated/ 17 | Flutter/App.framework 18 | Flutter/Flutter.framework 19 | Flutter/Flutter.podspec 20 | Flutter/Generated.xcconfig 21 | Flutter/app.flx 22 | Flutter/app.zip 23 | Flutter/flutter_assets/ 24 | Flutter/flutter_export_environment.sh 25 | ServiceDefinitions.json 26 | Runner/GeneratedPluginRegistrant.* 27 | 28 | # Exceptions to above rules. 29 | !default.mode1v3 30 | !default.mode2v3 31 | !default.pbxuser 32 | !default.perspectivev3 33 | -------------------------------------------------------------------------------- /example/ios/Flutter/AppFrameworkInfo.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | App 9 | CFBundleIdentifier 10 | io.flutter.flutter.app 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | App 15 | CFBundlePackageType 16 | FMWK 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | 1.0 23 | MinimumOSVersion 24 | 8.0 25 | 26 | 27 | -------------------------------------------------------------------------------- /example/ios/Flutter/Debug.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Generated.xcconfig" 2 | -------------------------------------------------------------------------------- /example/ios/Flutter/Release.xcconfig: 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lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = ""; }; 33 | 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = ""; }; 34 | 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = ""; }; 35 | 74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = ""; }; 36 | 74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = ""; }; 37 | 7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = 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9 | -------------------------------------------------------------------------------- /example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 39 | 40 | 41 | 42 | 43 | 44 | 54 | 56 | 62 | 63 | 64 | 65 | 66 | 67 | 73 | 75 | 81 | 82 | 83 | 84 | 86 | 87 | 90 | 91 | 92 | -------------------------------------------------------------------------------- /example/ios/Runner.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | IDEDidComputeMac32BitWarning 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /example/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | PreviewsEnabled 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /example/ios/Runner/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | import UIKit 2 | import Flutter 3 | 4 | @UIApplicationMain 5 | @objc class AppDelegate: FlutterAppDelegate { 6 | override func application( 7 | _ application: UIApplication, 8 | didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? 9 | ) -> Bool { 10 | GeneratedPluginRegistrant.register(with: self) 11 | return super.application(application, didFinishLaunchingWithOptions: launchOptions) 12 | } 13 | } 14 | 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}, 39 | { 40 | "size" : "40x40", 41 | "idiom" : "iphone", 42 | "filename" : "Icon-App-40x40@3x.png", 43 | "scale" : "3x" 44 | }, 45 | { 46 | "size" : "60x60", 47 | "idiom" : "iphone", 48 | "filename" : "Icon-App-60x60@2x.png", 49 | "scale" : "2x" 50 | }, 51 | { 52 | "size" : "60x60", 53 | "idiom" : "iphone", 54 | "filename" : "Icon-App-60x60@3x.png", 55 | "scale" : "3x" 56 | }, 57 | { 58 | "size" : "20x20", 59 | "idiom" : "ipad", 60 | "filename" : "Icon-App-20x20@1x.png", 61 | "scale" : "1x" 62 | }, 63 | { 64 | "size" : "20x20", 65 | "idiom" : "ipad", 66 | "filename" : "Icon-App-20x20@2x.png", 67 | "scale" : "2x" 68 | }, 69 | { 70 | "size" : "29x29", 71 | "idiom" : "ipad", 72 | "filename" : "Icon-App-29x29@1x.png", 73 | "scale" : "1x" 74 | }, 75 | { 76 | "size" : "29x29", 77 | "idiom" : "ipad", 78 | "filename" : "Icon-App-29x29@2x.png", 79 | "scale" : "2x" 80 | }, 81 | { 82 | "size" : "40x40", 83 | "idiom" : "ipad", 84 | "filename" : "Icon-App-40x40@1x.png", 85 | "scale" : "1x" 86 | }, 87 | { 88 | "size" : "40x40", 89 | "idiom" : "ipad", 90 | "filename" : "Icon-App-40x40@2x.png", 91 | "scale" : "2x" 92 | }, 93 | { 94 | "size" : "76x76", 95 | "idiom" : "ipad", 96 | "filename" : "Icon-App-76x76@1x.png", 97 | "scale" : "1x" 98 | }, 99 | { 100 | "size" : "76x76", 101 | "idiom" : "ipad", 102 | "filename" : "Icon-App-76x76@2x.png", 103 | "scale" : "2x" 104 | }, 105 | { 106 | "size" : "83.5x83.5", 107 | "idiom" : "ipad", 108 | "filename" : "Icon-App-83.5x83.5@2x.png", 109 | "scale" : "2x" 110 | }, 111 | { 112 | "size" : "1024x1024", 113 | "idiom" : "ios-marketing", 114 | "filename" : "Icon-App-1024x1024@1x.png", 115 | "scale" : "1x" 116 | } 117 | ], 118 | "info" : { 119 | "version" : 1, 120 | "author" : "xcode" 121 | } 122 | } 123 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png: -------------------------------------------------------------------------------- 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7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /example/ios/Runner/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /example/ios/Runner/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | example 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | $(FLUTTER_BUILD_NAME) 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | $(FLUTTER_BUILD_NUMBER) 23 | LSRequiresIPhoneOS 24 | 25 | UILaunchStoryboardName 26 | LaunchScreen 27 | UIMainStoryboardFile 28 | Main 29 | UISupportedInterfaceOrientations 30 | 31 | UIInterfaceOrientationPortrait 32 | UIInterfaceOrientationLandscapeLeft 33 | UIInterfaceOrientationLandscapeRight 34 | 35 | UISupportedInterfaceOrientations~ipad 36 | 37 | UIInterfaceOrientationPortrait 38 | UIInterfaceOrientationPortraitUpsideDown 39 | UIInterfaceOrientationLandscapeLeft 40 | UIInterfaceOrientationLandscapeRight 41 | 42 | UIViewControllerBasedStatusBarAppearance 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /example/ios/Runner/Runner-Bridging-Header.h: -------------------------------------------------------------------------------- 1 | #import "GeneratedPluginRegistrant.h" 2 | -------------------------------------------------------------------------------- /example/lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'dart:ui'; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:flutter/services.dart'; 5 | import 'package:text_composition/text_composition.dart'; 6 | 7 | import 'first_chapter.dart'; 8 | 9 | main(List args) { 10 | runApp(MaterialApp(home: Setting())); 11 | } 12 | 13 | class Setting extends StatefulWidget { 14 | Setting({Key? key}) : super(key: key); 15 | 16 | @override 17 | _SettingState createState() => _SettingState(); 18 | } 19 | 20 | class _SettingState extends State { 21 | var physicalSize = window.physicalSize, 22 | ratio = window.devicePixelRatio, 23 | size = TextEditingController(text: '16'), 24 | height = TextEditingController(text: '1.55'), 25 | paragraph = TextEditingController(text: '10'), 26 | shouldJustifyHeight = true, 27 | start = DateTime.now(), 28 | end = DateTime.now(), 29 | showMenu = true; 30 | Widget? content; 31 | TextComposition? textComposition; 32 | 33 | void start11() { 34 | physicalSize = window.physicalSize; 35 | ratio = window.devicePixelRatio; 36 | final width = physicalSize.width / ratio; 37 | start = DateTime.now(); 38 | textComposition = TextComposition( 39 | paragraphs: first_chapter, 40 | style: TextStyle( 41 | color: Colors.black87, 42 | fontSize: double.tryParse(size.text), 43 | height: double.tryParse(height.text), 44 | ), 45 | title: "烙印纹章 第一卷 一卷全", 46 | titleStyle: TextStyle( 47 | color: Colors.black87, 48 | fontWeight: FontWeight.bold, 49 | fontSize: double.tryParse(size.text), 50 | height: 2, 51 | ), 52 | columnGap: 40, 53 | columnCount: width > 1200 54 | ? 3 55 | : width > 500 56 | ? 2 57 | : 1, 58 | paragraph: double.tryParse(paragraph.text) ?? 10.0, 59 | padding: EdgeInsets.all(10), 60 | shouldJustifyHeight: shouldJustifyHeight, 61 | debug: true, 62 | // buildFooter: ({TextPage? page, int? pageIndex}) { 63 | // return Text( 64 | // "烙印纹章 第一卷 一卷全 ${pageIndex == null ? '' : pageIndex + 1}/${textComposition!.pageCount}", 65 | // style: TextStyle(fontSize: 12), 66 | // ); 67 | // }, 68 | // footerHeight: 24, 69 | // linkPattern: " 71 | // RegExp('(?<=src=".*)[^/\'"]+(?=[\'"])').stringMatch(s) ?? "链接", 72 | // linkStyle: TextStyle( 73 | // color: Colors.cyan, 74 | // fontStyle: FontStyle.italic, 75 | // fontSize: double.tryParse(size.text), 76 | // height: double.tryParse(height.text), 77 | // ), 78 | // onLinkTap: (s) => Navigator.of(context).push(MaterialPageRoute( 79 | // builder: (BuildContext context) => Scaffold( 80 | // appBar: AppBar(), 81 | // body: Image.network( 82 | // RegExp('(?<=src=")[^\'"]+').stringMatch(s) ?? ""), 83 | // ))), 84 | ); 85 | end = DateTime.now(); 86 | setState(() { 87 | content = PageListView( 88 | textComposition: textComposition!, 89 | ); 90 | }); 91 | } 92 | 93 | @override 94 | void initState() { 95 | SystemChrome.setEnabledSystemUIOverlays([]); 96 | start11(); 97 | super.initState(); 98 | } 99 | 100 | @override 101 | Widget build(BuildContext context) { 102 | physicalSize = window.physicalSize; 103 | ratio = window.devicePixelRatio; 104 | final _size = physicalSize / ratio; 105 | return Scaffold( 106 | body: Stack( 107 | children: [ 108 | if (content != null) content!, 109 | Center( 110 | child: InkWell( 111 | child: Container( 112 | color: Colors.indigo.withOpacity(0.1), 113 | width: _size.width / 3, 114 | height: _size.height / 3, 115 | child: Center( 116 | child: Text( 117 | "切\n换\n菜\n单\n显\n示", 118 | style: TextStyle(fontSize: 30), 119 | ), 120 | ), 121 | ), 122 | onTap: () { 123 | setState(() { 124 | showMenu = !showMenu; 125 | }); 126 | }, 127 | ), 128 | ), 129 | if (showMenu) 130 | Card( 131 | child: Column( 132 | mainAxisSize: MainAxisSize.min, 133 | children: [ 134 | Text( 135 | "physicalSize / ratio: $physicalSize / $ratio = ${physicalSize / ratio}"), 136 | TextField( 137 | decoration: InputDecoration(labelText: "字号 size"), 138 | controller: size, 139 | keyboardType: TextInputType.number, 140 | ), 141 | TextField( 142 | decoration: InputDecoration(labelText: "行高 height"), 143 | controller: height, 144 | keyboardType: TextInputType.number, 145 | ), 146 | TextField( 147 | decoration: InputDecoration(labelText: "段高 paragraph"), 148 | controller: paragraph, 149 | keyboardType: TextInputType.number, 150 | ), 151 | SwitchListTile( 152 | title: Text("是否底栏对齐"), 153 | subtitle: Text("shouldJustifyHeight"), 154 | value: shouldJustifyHeight, 155 | onChanged: (bool value) => setState(() { 156 | shouldJustifyHeight = !shouldJustifyHeight; 157 | }), 158 | ), 159 | Text("排版开始 $start"), 160 | Text("排版结束 $end"), 161 | SizedBox(height: 10), 162 | TextButton( 163 | child: Text("开始"), 164 | onPressed: () { 165 | start11(); 166 | setState(() { 167 | showMenu = false; 168 | }); 169 | }, 170 | ), 171 | ], 172 | ), 173 | ), 174 | ], 175 | ), 176 | ); 177 | } 178 | } 179 | 180 | class PageListView extends StatelessWidget { 181 | final TextComposition textComposition; 182 | const PageListView({required this.textComposition, Key? key}) : super(key: key); 183 | 184 | @override 185 | Widget build(BuildContext context) { 186 | SystemChrome.setEnabledSystemUIOverlays([]); 187 | final col = Column( 188 | children: List.generate( 189 | textComposition.boxSize.height ~/ 10, 190 | (index) => Container( 191 | height: 10, 192 | width: 20, 193 | color: index % 2 == 0 ? null : Colors.cyan, 194 | child: Text( 195 | index % 2 == 0 ? "" : (index * 10).toString(), 196 | textAlign: TextAlign.end, 197 | style: TextStyle(color: Colors.white, fontSize: 10, height: 1), 198 | ), 199 | ), 200 | ), 201 | ); 202 | return Scaffold( 203 | body: ListView.separated( 204 | scrollDirection: Axis.horizontal, 205 | itemCount: textComposition.pageCount, 206 | separatorBuilder: (BuildContext context, int index) => col, 207 | itemBuilder: (BuildContext context, int index) { 208 | return textComposition.getPageWidget(index); 209 | }, 210 | ), 211 | ); 212 | } 213 | } 214 | -------------------------------------------------------------------------------- /example/pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.flutter-io.cn" 9 | source: hosted 10 | version: "2.5.0" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.flutter-io.cn" 16 | source: hosted 17 | version: "2.1.0" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.flutter-io.cn" 23 | source: hosted 24 | version: "1.1.0" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.flutter-io.cn" 30 | source: hosted 31 | version: "1.2.0" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.flutter-io.cn" 37 | source: hosted 38 | version: "1.1.0" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.flutter-io.cn" 44 | source: hosted 45 | version: "1.15.0" 46 | fake_async: 47 | dependency: transitive 48 | description: 49 | name: fake_async 50 | url: "https://pub.flutter-io.cn" 51 | source: hosted 52 | version: "1.2.0" 53 | flutter: 54 | dependency: "direct main" 55 | description: flutter 56 | source: sdk 57 | version: "0.0.0" 58 | flutter_test: 59 | dependency: "direct dev" 60 | description: flutter 61 | source: sdk 62 | version: "0.0.0" 63 | matcher: 64 | dependency: transitive 65 | description: 66 | name: matcher 67 | url: "https://pub.flutter-io.cn" 68 | source: hosted 69 | version: "0.12.10" 70 | meta: 71 | dependency: transitive 72 | description: 73 | name: meta 74 | url: "https://pub.flutter-io.cn" 75 | source: hosted 76 | version: "1.3.0" 77 | path: 78 | dependency: transitive 79 | description: 80 | name: path 81 | url: "https://pub.flutter-io.cn" 82 | source: hosted 83 | version: "1.8.0" 84 | sky_engine: 85 | dependency: transitive 86 | description: flutter 87 | source: sdk 88 | version: "0.0.99" 89 | source_span: 90 | dependency: transitive 91 | description: 92 | name: source_span 93 | url: "https://pub.flutter-io.cn" 94 | source: hosted 95 | version: "1.8.0" 96 | stack_trace: 97 | dependency: transitive 98 | description: 99 | name: stack_trace 100 | url: "https://pub.flutter-io.cn" 101 | source: hosted 102 | version: "1.10.0" 103 | stream_channel: 104 | dependency: transitive 105 | description: 106 | name: stream_channel 107 | url: "https://pub.flutter-io.cn" 108 | source: hosted 109 | version: "2.1.0" 110 | string_scanner: 111 | dependency: transitive 112 | description: 113 | name: string_scanner 114 | url: "https://pub.flutter-io.cn" 115 | source: hosted 116 | version: "1.1.0" 117 | term_glyph: 118 | dependency: transitive 119 | description: 120 | name: term_glyph 121 | url: "https://pub.flutter-io.cn" 122 | source: hosted 123 | version: "1.2.0" 124 | test_api: 125 | dependency: transitive 126 | description: 127 | name: test_api 128 | url: "https://pub.flutter-io.cn" 129 | source: hosted 130 | version: "0.2.19" 131 | text_composition: 132 | dependency: "direct main" 133 | description: 134 | path: ".." 135 | relative: true 136 | source: path 137 | version: "0.0.4" 138 | typed_data: 139 | dependency: transitive 140 | description: 141 | name: typed_data 142 | url: "https://pub.flutter-io.cn" 143 | source: hosted 144 | version: "1.3.0" 145 | vector_math: 146 | dependency: transitive 147 | description: 148 | name: vector_math 149 | url: "https://pub.flutter-io.cn" 150 | source: hosted 151 | version: "2.1.0" 152 | sdks: 153 | dart: ">=2.12.0-0.0 <3.0.0" 154 | flutter: ">=1.17.0" 155 | -------------------------------------------------------------------------------- /example/pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: text_composition_example 2 | description: Demonstrates how to use the text_composition plugin. 3 | 4 | # The following line prevents the package from being accidentally published to 5 | # pub.dev using `pub publish`. This is preferred for private packages. 6 | publish_to: 'none' # Remove this line if you wish to publish to pub.dev 7 | 8 | environment: 9 | sdk: ">=2.12.0-0 <3.0.0" 10 | 11 | dependencies: 12 | flutter: 13 | sdk: flutter 14 | 15 | text_composition: 16 | # When depending on this package from a real application you should use: 17 | # text_composition2: ^x.y.z 18 | # See https://dart.dev/tools/pub/dependencies#version-constraints 19 | # The text_composition_example app is bundled with the plugin so we use a path dependency on 20 | # the parent directory to use the current plugin's version. 21 | path: ../ 22 | 23 | dev_dependencies: 24 | flutter_test: 25 | sdk: flutter 26 | -------------------------------------------------------------------------------- /example/web/favicon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/web/favicon.png -------------------------------------------------------------------------------- /example/web/icons/Icon-192.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/web/icons/Icon-192.png -------------------------------------------------------------------------------- /example/web/icons/Icon-512.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/web/icons/Icon-512.png -------------------------------------------------------------------------------- /example/web/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | text_composition_example 27 | 28 | 29 | 30 | 33 | 97 | 98 | 99 | -------------------------------------------------------------------------------- /example/web/manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "text_composition_example", 3 | "short_name": "text_composition_example", 4 | "start_url": ".", 5 | "display": "standalone", 6 | "background_color": "#0175C2", 7 | "theme_color": "#0175C2", 8 | "description": "A new Flutter project.", 9 | "orientation": "portrait-primary", 10 | "prefer_related_applications": false, 11 | "icons": [ 12 | { 13 | "src": "icons/Icon-192.png", 14 | "sizes": "192x192", 15 | "type": "image/png" 16 | }, 17 | { 18 | "src": "icons/Icon-512.png", 19 | "sizes": "512x512", 20 | "type": "image/png" 21 | } 22 | ] 23 | } 24 | -------------------------------------------------------------------------------- /example/windows/.gitignore: -------------------------------------------------------------------------------- 1 | flutter/ephemeral/ 2 | 3 | # Visual Studio user-specific files. 4 | *.suo 5 | *.user 6 | *.userosscache 7 | *.sln.docstates 8 | 9 | # Visual Studio build-related files. 10 | x64/ 11 | x86/ 12 | 13 | # Visual Studio cache files 14 | # files ending in .cache can be ignored 15 | *.[Cc]ache 16 | # but keep track of directories ending in .cache 17 | !*.[Cc]ache/ 18 | -------------------------------------------------------------------------------- /example/windows/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.15) 2 | project(example LANGUAGES CXX) 3 | 4 | set(BINARY_NAME "example") 5 | 6 | cmake_policy(SET CMP0063 NEW) 7 | 8 | set(CMAKE_INSTALL_RPATH "$ORIGIN/lib") 9 | 10 | # Configure build options. 11 | get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG) 12 | if(IS_MULTICONFIG) 13 | set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release" 14 | CACHE STRING "" FORCE) 15 | else() 16 | if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES) 17 | set(CMAKE_BUILD_TYPE "Debug" CACHE 18 | STRING "Flutter build mode" FORCE) 19 | set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS 20 | "Debug" "Profile" "Release") 21 | endif() 22 | endif() 23 | 24 | set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}") 25 | set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}") 26 | set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}") 27 | set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}") 28 | 29 | # Use Unicode for all projects. 30 | add_definitions(-DUNICODE -D_UNICODE) 31 | 32 | # Compilation settings that should be applied to most targets. 33 | function(APPLY_STANDARD_SETTINGS TARGET) 34 | target_compile_features(${TARGET} PUBLIC cxx_std_17) 35 | target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100") 36 | target_compile_options(${TARGET} PRIVATE /EHsc) 37 | target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0") 38 | target_compile_definitions(${TARGET} PRIVATE "$<$:_DEBUG>") 39 | endfunction() 40 | 41 | set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter") 42 | 43 | # Flutter library and tool build rules. 44 | add_subdirectory(${FLUTTER_MANAGED_DIR}) 45 | 46 | # Application build 47 | add_subdirectory("runner") 48 | 49 | # Generated plugin build rules, which manage building the plugins and adding 50 | # them to the application. 51 | include(flutter/generated_plugins.cmake) 52 | 53 | 54 | # === Installation === 55 | # Support files are copied into place next to the executable, so that it can 56 | # run in place. This is done instead of making a separate bundle (as on Linux) 57 | # so that building and running from within Visual Studio will work. 58 | set(BUILD_BUNDLE_DIR "$") 59 | # Make the "install" step default, as it's required to run. 60 | set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1) 61 | if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) 62 | set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE) 63 | endif() 64 | 65 | set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data") 66 | set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}") 67 | 68 | install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}" 69 | COMPONENT Runtime) 70 | 71 | install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" 72 | COMPONENT Runtime) 73 | 74 | install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" 75 | COMPONENT Runtime) 76 | 77 | if(PLUGIN_BUNDLED_LIBRARIES) 78 | install(FILES "${PLUGIN_BUNDLED_LIBRARIES}" 79 | DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" 80 | COMPONENT Runtime) 81 | endif() 82 | 83 | # Fully re-copy the assets directory on each build to avoid having stale files 84 | # from a previous install. 85 | set(FLUTTER_ASSET_DIR_NAME "flutter_assets") 86 | install(CODE " 87 | file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\") 88 | " COMPONENT Runtime) 89 | install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}" 90 | DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime) 91 | 92 | # Install the AOT library on non-Debug builds only. 93 | install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" 94 | CONFIGURATIONS Profile;Release 95 | COMPONENT Runtime) 96 | -------------------------------------------------------------------------------- /example/windows/flutter/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.15) 2 | 3 | set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral") 4 | 5 | # Configuration provided via flutter tool. 6 | include(${EPHEMERAL_DIR}/generated_config.cmake) 7 | 8 | # TODO: Move the rest of this into files in ephemeral. See 9 | # https://github.com/flutter/flutter/issues/57146. 10 | set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper") 11 | 12 | # === Flutter Library === 13 | set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll") 14 | 15 | # Published to parent scope for install step. 16 | set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE) 17 | set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE) 18 | set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE) 19 | set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE) 20 | 21 | list(APPEND FLUTTER_LIBRARY_HEADERS 22 | "flutter_export.h" 23 | "flutter_windows.h" 24 | "flutter_messenger.h" 25 | "flutter_plugin_registrar.h" 26 | "flutter_texture_registrar.h" 27 | ) 28 | list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/") 29 | add_library(flutter INTERFACE) 30 | target_include_directories(flutter INTERFACE 31 | "${EPHEMERAL_DIR}" 32 | ) 33 | target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib") 34 | add_dependencies(flutter flutter_assemble) 35 | 36 | # === Wrapper === 37 | list(APPEND CPP_WRAPPER_SOURCES_CORE 38 | "core_implementations.cc" 39 | "standard_codec.cc" 40 | ) 41 | list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/") 42 | list(APPEND CPP_WRAPPER_SOURCES_PLUGIN 43 | "plugin_registrar.cc" 44 | ) 45 | list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/") 46 | list(APPEND CPP_WRAPPER_SOURCES_APP 47 | "flutter_engine.cc" 48 | "flutter_view_controller.cc" 49 | ) 50 | list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/") 51 | 52 | # Wrapper sources needed for a plugin. 53 | add_library(flutter_wrapper_plugin STATIC 54 | ${CPP_WRAPPER_SOURCES_CORE} 55 | ${CPP_WRAPPER_SOURCES_PLUGIN} 56 | ) 57 | apply_standard_settings(flutter_wrapper_plugin) 58 | set_target_properties(flutter_wrapper_plugin PROPERTIES 59 | POSITION_INDEPENDENT_CODE ON) 60 | set_target_properties(flutter_wrapper_plugin PROPERTIES 61 | CXX_VISIBILITY_PRESET hidden) 62 | target_link_libraries(flutter_wrapper_plugin PUBLIC flutter) 63 | target_include_directories(flutter_wrapper_plugin PUBLIC 64 | "${WRAPPER_ROOT}/include" 65 | ) 66 | add_dependencies(flutter_wrapper_plugin flutter_assemble) 67 | 68 | # Wrapper sources needed for the runner. 69 | add_library(flutter_wrapper_app STATIC 70 | ${CPP_WRAPPER_SOURCES_CORE} 71 | ${CPP_WRAPPER_SOURCES_APP} 72 | ) 73 | apply_standard_settings(flutter_wrapper_app) 74 | target_link_libraries(flutter_wrapper_app PUBLIC flutter) 75 | target_include_directories(flutter_wrapper_app PUBLIC 76 | "${WRAPPER_ROOT}/include" 77 | ) 78 | add_dependencies(flutter_wrapper_app flutter_assemble) 79 | 80 | # === Flutter tool backend === 81 | # _phony_ is a non-existent file to force this command to run every time, 82 | # since currently there's no way to get a full input/output list from the 83 | # flutter tool. 84 | set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_") 85 | set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE) 86 | add_custom_command( 87 | OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS} 88 | ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN} 89 | ${CPP_WRAPPER_SOURCES_APP} 90 | ${PHONY_OUTPUT} 91 | COMMAND ${CMAKE_COMMAND} -E env 92 | ${FLUTTER_TOOL_ENVIRONMENT} 93 | "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat" 94 | windows-x64 $ 95 | VERBATIM 96 | ) 97 | add_custom_target(flutter_assemble DEPENDS 98 | "${FLUTTER_LIBRARY}" 99 | ${FLUTTER_LIBRARY_HEADERS} 100 | ${CPP_WRAPPER_SOURCES_CORE} 101 | ${CPP_WRAPPER_SOURCES_PLUGIN} 102 | ${CPP_WRAPPER_SOURCES_APP} 103 | ) 104 | -------------------------------------------------------------------------------- /example/windows/flutter/generated_plugin_registrant.cc: -------------------------------------------------------------------------------- 1 | // 2 | // Generated file. Do not edit. 3 | // 4 | 5 | #include "generated_plugin_registrant.h" 6 | 7 | 8 | void RegisterPlugins(flutter::PluginRegistry* registry) { 9 | } 10 | -------------------------------------------------------------------------------- /example/windows/flutter/generated_plugin_registrant.h: -------------------------------------------------------------------------------- 1 | // 2 | // Generated file. Do not edit. 3 | // 4 | 5 | #ifndef GENERATED_PLUGIN_REGISTRANT_ 6 | #define GENERATED_PLUGIN_REGISTRANT_ 7 | 8 | #include 9 | 10 | // Registers Flutter plugins. 11 | void RegisterPlugins(flutter::PluginRegistry* registry); 12 | 13 | #endif // GENERATED_PLUGIN_REGISTRANT_ 14 | -------------------------------------------------------------------------------- /example/windows/flutter/generated_plugins.cmake: -------------------------------------------------------------------------------- 1 | # 2 | # Generated file, do not edit. 3 | # 4 | 5 | list(APPEND FLUTTER_PLUGIN_LIST 6 | ) 7 | 8 | set(PLUGIN_BUNDLED_LIBRARIES) 9 | 10 | foreach(plugin ${FLUTTER_PLUGIN_LIST}) 11 | add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin}) 12 | target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin) 13 | list(APPEND PLUGIN_BUNDLED_LIBRARIES $) 14 | list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries}) 15 | endforeach(plugin) 16 | -------------------------------------------------------------------------------- /example/windows/runner/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.15) 2 | project(runner LANGUAGES CXX) 3 | 4 | add_executable(${BINARY_NAME} WIN32 5 | "flutter_window.cpp" 6 | "main.cpp" 7 | "run_loop.cpp" 8 | "utils.cpp" 9 | "win32_window.cpp" 10 | "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc" 11 | "Runner.rc" 12 | "runner.exe.manifest" 13 | ) 14 | apply_standard_settings(${BINARY_NAME}) 15 | target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX") 16 | target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app) 17 | target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}") 18 | add_dependencies(${BINARY_NAME} flutter_assemble) 19 | -------------------------------------------------------------------------------- /example/windows/runner/Runner.rc: -------------------------------------------------------------------------------- 1 | // Microsoft Visual C++ generated resource script. 2 | // 3 | #pragma code_page(65001) 4 | #include "resource.h" 5 | 6 | #define APSTUDIO_READONLY_SYMBOLS 7 | ///////////////////////////////////////////////////////////////////////////// 8 | // 9 | // Generated from the TEXTINCLUDE 2 resource. 10 | // 11 | #include "winres.h" 12 | 13 | ///////////////////////////////////////////////////////////////////////////// 14 | #undef APSTUDIO_READONLY_SYMBOLS 15 | 16 | ///////////////////////////////////////////////////////////////////////////// 17 | // English (United States) resources 18 | 19 | #if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU) 20 | LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US 21 | 22 | #ifdef APSTUDIO_INVOKED 23 | ///////////////////////////////////////////////////////////////////////////// 24 | // 25 | // TEXTINCLUDE 26 | // 27 | 28 | 1 TEXTINCLUDE 29 | BEGIN 30 | "resource.h\0" 31 | END 32 | 33 | 2 TEXTINCLUDE 34 | BEGIN 35 | "#include ""winres.h""\r\n" 36 | "\0" 37 | END 38 | 39 | 3 TEXTINCLUDE 40 | BEGIN 41 | "\r\n" 42 | "\0" 43 | END 44 | 45 | #endif // APSTUDIO_INVOKED 46 | 47 | 48 | ///////////////////////////////////////////////////////////////////////////// 49 | // 50 | // Icon 51 | // 52 | 53 | // Icon with lowest ID value placed first to ensure application icon 54 | // remains consistent on all systems. 55 | IDI_APP_ICON ICON "resources\\app_icon.ico" 56 | 57 | 58 | ///////////////////////////////////////////////////////////////////////////// 59 | // 60 | // Version 61 | // 62 | 63 | #ifdef FLUTTER_BUILD_NUMBER 64 | #define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER 65 | #else 66 | #define VERSION_AS_NUMBER 1,0,0 67 | #endif 68 | 69 | #ifdef FLUTTER_BUILD_NAME 70 | #define VERSION_AS_STRING #FLUTTER_BUILD_NAME 71 | #else 72 | #define VERSION_AS_STRING "1.0.0" 73 | #endif 74 | 75 | VS_VERSION_INFO VERSIONINFO 76 | FILEVERSION VERSION_AS_NUMBER 77 | PRODUCTVERSION VERSION_AS_NUMBER 78 | FILEFLAGSMASK VS_FFI_FILEFLAGSMASK 79 | #ifdef _DEBUG 80 | FILEFLAGS VS_FF_DEBUG 81 | #else 82 | FILEFLAGS 0x0L 83 | #endif 84 | FILEOS VOS__WINDOWS32 85 | FILETYPE VFT_APP 86 | FILESUBTYPE 0x0L 87 | BEGIN 88 | BLOCK "StringFileInfo" 89 | BEGIN 90 | BLOCK "040904e4" 91 | BEGIN 92 | VALUE "CompanyName", "com.text_composition_example" "\0" 93 | VALUE "FileDescription", "A new Flutter project." "\0" 94 | VALUE "FileVersion", VERSION_AS_STRING "\0" 95 | VALUE "InternalName", "example" "\0" 96 | VALUE "LegalCopyright", "Copyright (C) 2021 com.text_composition_example. All rights reserved." "\0" 97 | VALUE "OriginalFilename", "example.exe" "\0" 98 | VALUE "ProductName", "example" "\0" 99 | VALUE "ProductVersion", VERSION_AS_STRING "\0" 100 | END 101 | END 102 | BLOCK "VarFileInfo" 103 | BEGIN 104 | VALUE "Translation", 0x409, 1252 105 | END 106 | END 107 | 108 | #endif // English (United States) resources 109 | ///////////////////////////////////////////////////////////////////////////// 110 | 111 | 112 | 113 | #ifndef APSTUDIO_INVOKED 114 | ///////////////////////////////////////////////////////////////////////////// 115 | // 116 | // Generated from the TEXTINCLUDE 3 resource. 117 | // 118 | 119 | 120 | ///////////////////////////////////////////////////////////////////////////// 121 | #endif // not APSTUDIO_INVOKED 122 | -------------------------------------------------------------------------------- /example/windows/runner/flutter_window.cpp: -------------------------------------------------------------------------------- 1 | #include "flutter_window.h" 2 | 3 | #include 4 | 5 | #include "flutter/generated_plugin_registrant.h" 6 | 7 | FlutterWindow::FlutterWindow(RunLoop* run_loop, 8 | const flutter::DartProject& project) 9 | : run_loop_(run_loop), project_(project) {} 10 | 11 | FlutterWindow::~FlutterWindow() {} 12 | 13 | bool FlutterWindow::OnCreate() { 14 | if (!Win32Window::OnCreate()) { 15 | return false; 16 | } 17 | 18 | RECT frame = GetClientArea(); 19 | 20 | // The size here must match the window dimensions to avoid unnecessary surface 21 | // creation / destruction in the startup path. 22 | flutter_controller_ = std::make_unique( 23 | frame.right - frame.left, frame.bottom - frame.top, project_); 24 | // Ensure that basic setup of the controller was successful. 25 | if (!flutter_controller_->engine() || !flutter_controller_->view()) { 26 | return false; 27 | } 28 | RegisterPlugins(flutter_controller_->engine()); 29 | run_loop_->RegisterFlutterInstance(flutter_controller_->engine()); 30 | SetChildContent(flutter_controller_->view()->GetNativeWindow()); 31 | return true; 32 | } 33 | 34 | void FlutterWindow::OnDestroy() { 35 | if (flutter_controller_) { 36 | run_loop_->UnregisterFlutterInstance(flutter_controller_->engine()); 37 | flutter_controller_ = nullptr; 38 | } 39 | 40 | Win32Window::OnDestroy(); 41 | } 42 | 43 | LRESULT 44 | FlutterWindow::MessageHandler(HWND hwnd, UINT const message, 45 | WPARAM const wparam, 46 | LPARAM const lparam) noexcept { 47 | // Give Flutter, including plugins, an opporutunity to handle window messages. 48 | if (flutter_controller_) { 49 | std::optional result = 50 | flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam, 51 | lparam); 52 | if (result) { 53 | return *result; 54 | } 55 | } 56 | 57 | switch (message) { 58 | case WM_FONTCHANGE: 59 | flutter_controller_->engine()->ReloadSystemFonts(); 60 | break; 61 | } 62 | 63 | return Win32Window::MessageHandler(hwnd, message, wparam, lparam); 64 | } 65 | -------------------------------------------------------------------------------- /example/windows/runner/flutter_window.h: -------------------------------------------------------------------------------- 1 | #ifndef RUNNER_FLUTTER_WINDOW_H_ 2 | #define RUNNER_FLUTTER_WINDOW_H_ 3 | 4 | #include 5 | #include 6 | 7 | #include 8 | 9 | #include "run_loop.h" 10 | #include "win32_window.h" 11 | 12 | // A window that does nothing but host a Flutter view. 13 | class FlutterWindow : public Win32Window { 14 | public: 15 | // Creates a new FlutterWindow driven by the |run_loop|, hosting a 16 | // Flutter view running |project|. 17 | explicit FlutterWindow(RunLoop* run_loop, 18 | const flutter::DartProject& project); 19 | virtual ~FlutterWindow(); 20 | 21 | protected: 22 | // Win32Window: 23 | bool OnCreate() override; 24 | void OnDestroy() override; 25 | LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam, 26 | LPARAM const lparam) noexcept override; 27 | 28 | private: 29 | // The run loop driving events for this window. 30 | RunLoop* run_loop_; 31 | 32 | // The project to run. 33 | flutter::DartProject project_; 34 | 35 | // The Flutter instance hosted by this window. 36 | std::unique_ptr flutter_controller_; 37 | }; 38 | 39 | #endif // RUNNER_FLUTTER_WINDOW_H_ 40 | -------------------------------------------------------------------------------- /example/windows/runner/main.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | #include "flutter_window.h" 6 | #include "run_loop.h" 7 | #include "utils.h" 8 | 9 | int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev, 10 | _In_ wchar_t *command_line, _In_ int show_command) { 11 | // Attach to console when present (e.g., 'flutter run') or create a 12 | // new console when running with a debugger. 13 | if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) { 14 | CreateAndAttachConsole(); 15 | } 16 | 17 | // Initialize COM, so that it is available for use in the library and/or 18 | // plugins. 19 | ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED); 20 | 21 | RunLoop run_loop; 22 | 23 | flutter::DartProject project(L"data"); 24 | 25 | std::vector command_line_arguments = 26 | GetCommandLineArguments(); 27 | 28 | project.set_dart_entrypoint_arguments(std::move(command_line_arguments)); 29 | 30 | FlutterWindow window(&run_loop, project); 31 | Win32Window::Point origin(10, 10); 32 | Win32Window::Size size(1280, 720); 33 | if (!window.CreateAndShow(L"example", origin, size)) { 34 | return EXIT_FAILURE; 35 | } 36 | window.SetQuitOnClose(true); 37 | 38 | run_loop.Run(); 39 | 40 | ::CoUninitialize(); 41 | return EXIT_SUCCESS; 42 | } 43 | -------------------------------------------------------------------------------- /example/windows/runner/resource.h: -------------------------------------------------------------------------------- 1 | //{{NO_DEPENDENCIES}} 2 | // Microsoft Visual C++ generated include file. 3 | // Used by Runner.rc 4 | // 5 | #define IDI_APP_ICON 101 6 | 7 | // Next default values for new objects 8 | // 9 | #ifdef APSTUDIO_INVOKED 10 | #ifndef APSTUDIO_READONLY_SYMBOLS 11 | #define _APS_NEXT_RESOURCE_VALUE 102 12 | #define _APS_NEXT_COMMAND_VALUE 40001 13 | #define _APS_NEXT_CONTROL_VALUE 1001 14 | #define _APS_NEXT_SYMED_VALUE 101 15 | #endif 16 | #endif 17 | -------------------------------------------------------------------------------- /example/windows/runner/resources/app_icon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mabDc/text_composition/1041fc8c199fcd6d0aabf08b921bd68dca21cba3/example/windows/runner/resources/app_icon.ico -------------------------------------------------------------------------------- /example/windows/runner/run_loop.cpp: -------------------------------------------------------------------------------- 1 | #include "run_loop.h" 2 | 3 | #include 4 | 5 | #include 6 | 7 | RunLoop::RunLoop() {} 8 | 9 | RunLoop::~RunLoop() {} 10 | 11 | void RunLoop::Run() { 12 | bool keep_running = true; 13 | TimePoint next_flutter_event_time = TimePoint::clock::now(); 14 | while (keep_running) { 15 | std::chrono::nanoseconds wait_duration = 16 | std::max(std::chrono::nanoseconds(0), 17 | next_flutter_event_time - TimePoint::clock::now()); 18 | ::MsgWaitForMultipleObjects( 19 | 0, nullptr, FALSE, static_cast(wait_duration.count() / 1000), 20 | QS_ALLINPUT); 21 | bool processed_events = false; 22 | MSG message; 23 | // All pending Windows messages must be processed; MsgWaitForMultipleObjects 24 | // won't return again for items left in the queue after PeekMessage. 25 | while (::PeekMessage(&message, nullptr, 0, 0, PM_REMOVE)) { 26 | processed_events = true; 27 | if (message.message == WM_QUIT) { 28 | keep_running = false; 29 | break; 30 | } 31 | ::TranslateMessage(&message); 32 | ::DispatchMessage(&message); 33 | // Allow Flutter to process messages each time a Windows message is 34 | // processed, to prevent starvation. 35 | next_flutter_event_time = 36 | std::min(next_flutter_event_time, ProcessFlutterMessages()); 37 | } 38 | // If the PeekMessage loop didn't run, process Flutter messages. 39 | if (!processed_events) { 40 | next_flutter_event_time = 41 | std::min(next_flutter_event_time, ProcessFlutterMessages()); 42 | } 43 | } 44 | } 45 | 46 | void RunLoop::RegisterFlutterInstance( 47 | flutter::FlutterEngine* flutter_instance) { 48 | flutter_instances_.insert(flutter_instance); 49 | } 50 | 51 | void RunLoop::UnregisterFlutterInstance( 52 | flutter::FlutterEngine* flutter_instance) { 53 | flutter_instances_.erase(flutter_instance); 54 | } 55 | 56 | RunLoop::TimePoint RunLoop::ProcessFlutterMessages() { 57 | TimePoint next_event_time = TimePoint::max(); 58 | for (auto instance : flutter_instances_) { 59 | std::chrono::nanoseconds wait_duration = instance->ProcessMessages(); 60 | if (wait_duration != std::chrono::nanoseconds::max()) { 61 | next_event_time = 62 | std::min(next_event_time, TimePoint::clock::now() + wait_duration); 63 | } 64 | } 65 | return next_event_time; 66 | } 67 | -------------------------------------------------------------------------------- /example/windows/runner/run_loop.h: -------------------------------------------------------------------------------- 1 | #ifndef RUNNER_RUN_LOOP_H_ 2 | #define RUNNER_RUN_LOOP_H_ 3 | 4 | #include 5 | 6 | #include 7 | #include 8 | 9 | // A runloop that will service events for Flutter instances as well 10 | // as native messages. 11 | class RunLoop { 12 | public: 13 | RunLoop(); 14 | ~RunLoop(); 15 | 16 | // Prevent copying 17 | RunLoop(RunLoop const&) = delete; 18 | RunLoop& operator=(RunLoop const&) = delete; 19 | 20 | // Runs the run loop until the application quits. 21 | void Run(); 22 | 23 | // Registers the given Flutter instance for event servicing. 24 | void RegisterFlutterInstance( 25 | flutter::FlutterEngine* flutter_instance); 26 | 27 | // Unregisters the given Flutter instance from event servicing. 28 | void UnregisterFlutterInstance( 29 | flutter::FlutterEngine* flutter_instance); 30 | 31 | private: 32 | using TimePoint = std::chrono::steady_clock::time_point; 33 | 34 | // Processes all currently pending messages for registered Flutter instances. 35 | TimePoint ProcessFlutterMessages(); 36 | 37 | std::set flutter_instances_; 38 | }; 39 | 40 | #endif // RUNNER_RUN_LOOP_H_ 41 | -------------------------------------------------------------------------------- /example/windows/runner/runner.exe.manifest: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | PerMonitorV2 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /example/windows/runner/utils.cpp: -------------------------------------------------------------------------------- 1 | #include "utils.h" 2 | 3 | #include 4 | #include 5 | #include 6 | #include 7 | 8 | #include 9 | 10 | void CreateAndAttachConsole() { 11 | if (::AllocConsole()) { 12 | FILE *unused; 13 | if (freopen_s(&unused, "CONOUT$", "w", stdout)) { 14 | _dup2(_fileno(stdout), 1); 15 | } 16 | if (freopen_s(&unused, "CONOUT$", "w", stderr)) { 17 | _dup2(_fileno(stdout), 2); 18 | } 19 | std::ios::sync_with_stdio(); 20 | FlutterDesktopResyncOutputStreams(); 21 | } 22 | } 23 | 24 | std::vector GetCommandLineArguments() { 25 | // Convert the UTF-16 command line arguments to UTF-8 for the Engine to use. 26 | int argc; 27 | wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc); 28 | if (argv == nullptr) { 29 | return std::vector(); 30 | } 31 | 32 | std::vector command_line_arguments; 33 | 34 | // Skip the first argument as it's the binary name. 35 | for (int i = 1; i < argc; i++) { 36 | command_line_arguments.push_back(Utf8FromUtf16(argv[i])); 37 | } 38 | 39 | ::LocalFree(argv); 40 | 41 | return command_line_arguments; 42 | } 43 | 44 | std::string Utf8FromUtf16(const wchar_t* utf16_string) { 45 | if (utf16_string == nullptr) { 46 | return std::string(); 47 | } 48 | int target_length = ::WideCharToMultiByte( 49 | CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string, 50 | -1, nullptr, 0, nullptr, nullptr); 51 | if (target_length == 0) { 52 | return std::string(); 53 | } 54 | std::string utf8_string; 55 | utf8_string.resize(target_length); 56 | int converted_length = ::WideCharToMultiByte( 57 | CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string, 58 | -1, utf8_string.data(), 59 | target_length, nullptr, nullptr); 60 | if (converted_length == 0) { 61 | return std::string(); 62 | } 63 | return utf8_string; 64 | } 65 | -------------------------------------------------------------------------------- /example/windows/runner/utils.h: -------------------------------------------------------------------------------- 1 | #ifndef RUNNER_UTILS_H_ 2 | #define RUNNER_UTILS_H_ 3 | 4 | #include 5 | #include 6 | 7 | // Creates a console for the process, and redirects stdout and stderr to 8 | // it for both the runner and the Flutter library. 9 | void CreateAndAttachConsole(); 10 | 11 | // Takes a null-terminated wchar_t* encoded in UTF-16 and returns a std::string 12 | // encoded in UTF-8. Returns an empty std::string on failure. 13 | std::string Utf8FromUtf16(const wchar_t* utf16_string); 14 | 15 | // Gets the command line arguments passed in as a std::vector, 16 | // encoded in UTF-8. Returns an empty std::vector on failure. 17 | std::vector GetCommandLineArguments(); 18 | 19 | #endif // RUNNER_UTILS_H_ 20 | -------------------------------------------------------------------------------- /example/windows/runner/win32_window.cpp: -------------------------------------------------------------------------------- 1 | #include "win32_window.h" 2 | 3 | #include 4 | 5 | #include "resource.h" 6 | 7 | namespace { 8 | 9 | constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW"; 10 | 11 | // The number of Win32Window objects that currently exist. 12 | static int g_active_window_count = 0; 13 | 14 | using EnableNonClientDpiScaling = BOOL __stdcall(HWND hwnd); 15 | 16 | // Scale helper to convert logical scaler values to physical using passed in 17 | // scale factor 18 | int Scale(int source, double scale_factor) { 19 | return static_cast(source * scale_factor); 20 | } 21 | 22 | // Dynamically loads the |EnableNonClientDpiScaling| from the User32 module. 23 | // This API is only needed for PerMonitor V1 awareness mode. 24 | void EnableFullDpiSupportIfAvailable(HWND hwnd) { 25 | HMODULE user32_module = LoadLibraryA("User32.dll"); 26 | if (!user32_module) { 27 | return; 28 | } 29 | auto enable_non_client_dpi_scaling = 30 | reinterpret_cast( 31 | GetProcAddress(user32_module, "EnableNonClientDpiScaling")); 32 | if (enable_non_client_dpi_scaling != nullptr) { 33 | enable_non_client_dpi_scaling(hwnd); 34 | FreeLibrary(user32_module); 35 | } 36 | } 37 | 38 | } // namespace 39 | 40 | // Manages the Win32Window's window class registration. 41 | class WindowClassRegistrar { 42 | public: 43 | ~WindowClassRegistrar() = default; 44 | 45 | // Returns the singleton registar instance. 46 | static WindowClassRegistrar* GetInstance() { 47 | if (!instance_) { 48 | instance_ = new WindowClassRegistrar(); 49 | } 50 | return instance_; 51 | } 52 | 53 | // Returns the name of the window class, registering the class if it hasn't 54 | // previously been registered. 55 | const wchar_t* GetWindowClass(); 56 | 57 | // Unregisters the window class. Should only be called if there are no 58 | // instances of the window. 59 | void UnregisterWindowClass(); 60 | 61 | private: 62 | WindowClassRegistrar() = default; 63 | 64 | static WindowClassRegistrar* instance_; 65 | 66 | bool class_registered_ = false; 67 | }; 68 | 69 | WindowClassRegistrar* WindowClassRegistrar::instance_ = nullptr; 70 | 71 | const wchar_t* WindowClassRegistrar::GetWindowClass() { 72 | if (!class_registered_) { 73 | WNDCLASS window_class{}; 74 | window_class.hCursor = LoadCursor(nullptr, IDC_ARROW); 75 | window_class.lpszClassName = kWindowClassName; 76 | window_class.style = CS_HREDRAW | CS_VREDRAW; 77 | window_class.cbClsExtra = 0; 78 | window_class.cbWndExtra = 0; 79 | window_class.hInstance = GetModuleHandle(nullptr); 80 | window_class.hIcon = 81 | LoadIcon(window_class.hInstance, MAKEINTRESOURCE(IDI_APP_ICON)); 82 | window_class.hbrBackground = 0; 83 | window_class.lpszMenuName = nullptr; 84 | window_class.lpfnWndProc = Win32Window::WndProc; 85 | RegisterClass(&window_class); 86 | class_registered_ = true; 87 | } 88 | return kWindowClassName; 89 | } 90 | 91 | void WindowClassRegistrar::UnregisterWindowClass() { 92 | UnregisterClass(kWindowClassName, nullptr); 93 | class_registered_ = false; 94 | } 95 | 96 | Win32Window::Win32Window() { 97 | ++g_active_window_count; 98 | } 99 | 100 | Win32Window::~Win32Window() { 101 | --g_active_window_count; 102 | Destroy(); 103 | } 104 | 105 | bool Win32Window::CreateAndShow(const std::wstring& title, 106 | const Point& origin, 107 | const Size& size) { 108 | Destroy(); 109 | 110 | const wchar_t* window_class = 111 | WindowClassRegistrar::GetInstance()->GetWindowClass(); 112 | 113 | const POINT target_point = {static_cast(origin.x), 114 | static_cast(origin.y)}; 115 | HMONITOR monitor = MonitorFromPoint(target_point, MONITOR_DEFAULTTONEAREST); 116 | UINT dpi = FlutterDesktopGetDpiForMonitor(monitor); 117 | double scale_factor = dpi / 96.0; 118 | 119 | HWND window = CreateWindow( 120 | window_class, title.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE, 121 | Scale(origin.x, scale_factor), Scale(origin.y, scale_factor), 122 | Scale(size.width, scale_factor), Scale(size.height, scale_factor), 123 | nullptr, nullptr, GetModuleHandle(nullptr), this); 124 | 125 | if (!window) { 126 | return false; 127 | } 128 | 129 | return OnCreate(); 130 | } 131 | 132 | // static 133 | LRESULT CALLBACK Win32Window::WndProc(HWND const window, 134 | UINT const message, 135 | WPARAM const wparam, 136 | LPARAM const lparam) noexcept { 137 | if (message == WM_NCCREATE) { 138 | auto window_struct = reinterpret_cast(lparam); 139 | SetWindowLongPtr(window, GWLP_USERDATA, 140 | reinterpret_cast(window_struct->lpCreateParams)); 141 | 142 | auto that = static_cast(window_struct->lpCreateParams); 143 | EnableFullDpiSupportIfAvailable(window); 144 | that->window_handle_ = window; 145 | } else if (Win32Window* that = GetThisFromHandle(window)) { 146 | return that->MessageHandler(window, message, wparam, lparam); 147 | } 148 | 149 | return DefWindowProc(window, message, wparam, lparam); 150 | } 151 | 152 | LRESULT 153 | Win32Window::MessageHandler(HWND hwnd, 154 | UINT const message, 155 | WPARAM const wparam, 156 | LPARAM const lparam) noexcept { 157 | switch (message) { 158 | case WM_DESTROY: 159 | window_handle_ = nullptr; 160 | Destroy(); 161 | if (quit_on_close_) { 162 | PostQuitMessage(0); 163 | } 164 | return 0; 165 | 166 | case WM_DPICHANGED: { 167 | auto newRectSize = reinterpret_cast(lparam); 168 | LONG newWidth = newRectSize->right - newRectSize->left; 169 | LONG newHeight = newRectSize->bottom - newRectSize->top; 170 | 171 | SetWindowPos(hwnd, nullptr, newRectSize->left, newRectSize->top, newWidth, 172 | newHeight, SWP_NOZORDER | SWP_NOACTIVATE); 173 | 174 | return 0; 175 | } 176 | case WM_SIZE: { 177 | RECT rect = GetClientArea(); 178 | if (child_content_ != nullptr) { 179 | // Size and position the child window. 180 | MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left, 181 | rect.bottom - rect.top, TRUE); 182 | } 183 | return 0; 184 | } 185 | 186 | case WM_ACTIVATE: 187 | if (child_content_ != nullptr) { 188 | SetFocus(child_content_); 189 | } 190 | return 0; 191 | } 192 | 193 | return DefWindowProc(window_handle_, message, wparam, lparam); 194 | } 195 | 196 | void Win32Window::Destroy() { 197 | OnDestroy(); 198 | 199 | if (window_handle_) { 200 | DestroyWindow(window_handle_); 201 | window_handle_ = nullptr; 202 | } 203 | if (g_active_window_count == 0) { 204 | WindowClassRegistrar::GetInstance()->UnregisterWindowClass(); 205 | } 206 | } 207 | 208 | Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept { 209 | return reinterpret_cast( 210 | GetWindowLongPtr(window, GWLP_USERDATA)); 211 | } 212 | 213 | void Win32Window::SetChildContent(HWND content) { 214 | child_content_ = content; 215 | SetParent(content, window_handle_); 216 | RECT frame = GetClientArea(); 217 | 218 | MoveWindow(content, frame.left, frame.top, frame.right - frame.left, 219 | frame.bottom - frame.top, true); 220 | 221 | SetFocus(child_content_); 222 | } 223 | 224 | RECT Win32Window::GetClientArea() { 225 | RECT frame; 226 | GetClientRect(window_handle_, &frame); 227 | return frame; 228 | } 229 | 230 | HWND Win32Window::GetHandle() { 231 | return window_handle_; 232 | } 233 | 234 | void Win32Window::SetQuitOnClose(bool quit_on_close) { 235 | quit_on_close_ = quit_on_close; 236 | } 237 | 238 | bool Win32Window::OnCreate() { 239 | // No-op; provided for subclasses. 240 | return true; 241 | } 242 | 243 | void Win32Window::OnDestroy() { 244 | // No-op; provided for subclasses. 245 | } 246 | -------------------------------------------------------------------------------- /example/windows/runner/win32_window.h: -------------------------------------------------------------------------------- 1 | #ifndef RUNNER_WIN32_WINDOW_H_ 2 | #define RUNNER_WIN32_WINDOW_H_ 3 | 4 | #include 5 | 6 | #include 7 | #include 8 | #include 9 | 10 | // A class abstraction for a high DPI-aware Win32 Window. Intended to be 11 | // inherited from by classes that wish to specialize with custom 12 | // rendering and input handling 13 | class Win32Window { 14 | public: 15 | struct Point { 16 | unsigned int x; 17 | unsigned int y; 18 | Point(unsigned int x, unsigned int y) : x(x), y(y) {} 19 | }; 20 | 21 | struct Size { 22 | unsigned int width; 23 | unsigned int height; 24 | Size(unsigned int width, unsigned int height) 25 | : width(width), height(height) {} 26 | }; 27 | 28 | Win32Window(); 29 | virtual ~Win32Window(); 30 | 31 | // Creates and shows a win32 window with |title| and position and size using 32 | // |origin| and |size|. New windows are created on the default monitor. Window 33 | // sizes are specified to the OS in physical pixels, hence to ensure a 34 | // consistent size to will treat the width height passed in to this function 35 | // as logical pixels and scale to appropriate for the default monitor. Returns 36 | // true if the window was created successfully. 37 | bool CreateAndShow(const std::wstring& title, 38 | const Point& origin, 39 | const Size& size); 40 | 41 | // Release OS resources associated with window. 42 | void Destroy(); 43 | 44 | // Inserts |content| into the window tree. 45 | void SetChildContent(HWND content); 46 | 47 | // Returns the backing Window handle to enable clients to set icon and other 48 | // window properties. Returns nullptr if the window has been destroyed. 49 | HWND GetHandle(); 50 | 51 | // If true, closing this window will quit the application. 52 | void SetQuitOnClose(bool quit_on_close); 53 | 54 | // Return a RECT representing the bounds of the current client area. 55 | RECT GetClientArea(); 56 | 57 | protected: 58 | // Processes and route salient window messages for mouse handling, 59 | // size change and DPI. Delegates handling of these to member overloads that 60 | // inheriting classes can handle. 61 | virtual LRESULT MessageHandler(HWND window, 62 | UINT const message, 63 | WPARAM const wparam, 64 | LPARAM const lparam) noexcept; 65 | 66 | // Called when CreateAndShow is called, allowing subclass window-related 67 | // setup. Subclasses should return false if setup fails. 68 | virtual bool OnCreate(); 69 | 70 | // Called when Destroy is called. 71 | virtual void OnDestroy(); 72 | 73 | private: 74 | friend class WindowClassRegistrar; 75 | 76 | // OS callback called by message pump. Handles the WM_NCCREATE message which 77 | // is passed when the non-client area is being created and enables automatic 78 | // non-client DPI scaling so that the non-client area automatically 79 | // responsponds to changes in DPI. All other messages are handled by 80 | // MessageHandler. 81 | static LRESULT CALLBACK WndProc(HWND const window, 82 | UINT const message, 83 | WPARAM const wparam, 84 | LPARAM const lparam) noexcept; 85 | 86 | // Retrieves a class instance pointer for |window| 87 | static Win32Window* GetThisFromHandle(HWND const window) noexcept; 88 | 89 | bool quit_on_close_ = false; 90 | 91 | // window handle for top level window. 92 | HWND window_handle_ = nullptr; 93 | 94 | // window handle for hosted content. 95 | HWND child_content_ = nullptr; 96 | }; 97 | 98 | #endif // RUNNER_WIN32_WINDOW_H_ 99 | -------------------------------------------------------------------------------- /lib/text_composition.dart: -------------------------------------------------------------------------------- 1 | library text_composition; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'dart:ui' as ui; 5 | 6 | /// * 暂不支持图片 7 | /// * 文本排版 8 | /// * 两端对齐 9 | /// * 底栏对齐 10 | class TextComposition { 11 | /// 待渲染文本段落 12 | /// 已经预处理: 不重新计算空行 不重新缩进 13 | final List paragraphs; 14 | 15 | /// 字体样式 字号 [size] 行高 [height] 字体 [family] 字色[Color] 16 | final TextStyle style; 17 | 18 | /// 标题 19 | final String? title; 20 | 21 | /// 标题样式 22 | final TextStyle? titleStyle; 23 | 24 | /// 标题正文间距 25 | final double? titlePadding; 26 | 27 | /// 段间距 28 | final double paragraph; 29 | 30 | /// 每一页内容 31 | final List pages; 32 | 33 | int get pageCount => pages.length; 34 | 35 | /// 分栏个数 36 | final int columnCount; 37 | 38 | /// 分栏间距 39 | final double columnGap; 40 | 41 | /// 单栏宽度 42 | final double columnWidth; 43 | 44 | /// 容器大小 45 | final Size boxSize; 46 | 47 | /// 内部边距 48 | final EdgeInsets? padding; 49 | 50 | /// 是否底栏对齐 51 | final bool shouldJustifyHeight; 52 | 53 | /// 前景 页眉页脚 菜单等 54 | final Widget Function(int pageIndex)? getForeground; 55 | 56 | /// 背景 背景色或者背景图片 57 | final ui.Image Function(int pageIndex)? getBackground; 58 | 59 | /// 是否显示动画 60 | bool showAnimation; 61 | 62 | // final Pattern? linkPattern; 63 | // final TextStyle? linkStyle; 64 | // final String Function(String s)? linkText; 65 | 66 | // canvas 点击事件不生效 67 | // final void Function(String s)? onLinkTap; 68 | 69 | /// * 文本排版 70 | /// * 两端对齐 71 | /// * 底栏对齐 72 | /// * 多栏布局 73 | /// 74 | /// 75 | /// * [text] 待渲染文本内容 已经预处理: 不重新计算空行 不重新缩进 76 | /// * [paragraphs] 待渲染文本内容 已经预处理: 不重新计算空行 不重新缩进 77 | /// * [paragraphs] 为空时使用[text], 否则忽略[text], 78 | /// * [style] 字体样式 字号 [size] 行高 [height] 字体 [family] 字色[Color] 79 | /// * [title] 标题 80 | /// * [titleStyle] 标题样式 81 | /// * [boxSize] 容器大小 82 | /// * [paragraph] 段间距 83 | /// * [shouldJustifyHeight] 是否底栏对齐 84 | /// * [columnCount] 分栏个数 85 | /// * [columnGap] 分栏间距 86 | /// * onLinkTap canvas 点击事件不生效 87 | TextComposition({ 88 | String? text, 89 | List? paragraphs, 90 | required this.style, 91 | this.title, 92 | this.titleStyle, 93 | this.titlePadding, 94 | Size? boxSize, 95 | this.padding, 96 | this.shouldJustifyHeight = true, 97 | this.paragraph = 10.0, 98 | this.columnCount = 1, 99 | this.columnGap = 0.0, 100 | this.getForeground, 101 | this.getBackground, 102 | this.debug = false, 103 | List? pages, 104 | this.showAnimation = true, 105 | // this.linkPattern, 106 | // this.linkStyle, 107 | // this.linkText, 108 | // this.onLinkTap, 109 | }) : pages = pages ?? [], 110 | paragraphs = paragraphs ?? text?.split("\n") ?? [], 111 | boxSize = 112 | boxSize ?? ui.window.physicalSize / ui.window.devicePixelRatio, 113 | columnWidth = ((boxSize?.width ?? 114 | ui.window.physicalSize.width / ui.window.devicePixelRatio) - 115 | (padding?.horizontal ?? 0) - 116 | (columnCount - 1) * columnGap) / 117 | columnCount { 118 | // [_width2] [_height2] 用于调整判断 119 | final tp = TextPainter(textDirection: TextDirection.ltr, maxLines: 1); 120 | final offset = Offset(columnWidth, 1); 121 | final size = style.fontSize ?? 14; 122 | final _dx = padding?.left ?? 0; 123 | final _dy = padding?.top ?? 0; 124 | final _width = columnWidth; 125 | final _width2 = _width - size; 126 | final _height = this.boxSize.height - (padding?.vertical ?? 0); 127 | final _height2 = _height - size * (style.height ?? 1.0); 128 | 129 | var lines = []; 130 | var columnNum = 1; 131 | var dx = _dx; 132 | var dy = _dy; 133 | var startLine = 0; 134 | 135 | if (title != null && title!.isNotEmpty) { 136 | String t = title!; 137 | while (true) { 138 | tp.text = TextSpan(text: title, style: titleStyle); 139 | tp.layout(maxWidth: _width); 140 | final textCount = tp.getPositionForOffset(offset).offset; 141 | final text = t.substring(0, textCount); 142 | double? spacing; 143 | if (tp.width > _width2) { 144 | tp.text = TextSpan(text: text, style: titleStyle); 145 | tp.layout(); 146 | double _spacing = (_width - tp.width) / textCount; 147 | if (_spacing < -0.1 || _spacing > 0.1) { 148 | spacing = _spacing; 149 | } 150 | } 151 | lines.add(TextLine(text, dx, dy, spacing, true)); 152 | dy += tp.height; 153 | if (t.length == textCount) { 154 | break; 155 | } else { 156 | t = t.substring(textCount); 157 | } 158 | } 159 | } 160 | 161 | /// 下一页 判断分页 依据: `_boxHeight` `_boxHeight2`是否可以容纳下一行 162 | void newPage([bool shouldJustifyHeight = true, bool lastPage = false]) { 163 | if (shouldJustifyHeight && this.shouldJustifyHeight) { 164 | final len = lines.length - startLine; 165 | double justify = (_height - dy) / (len - 1); 166 | for (var i = 0; i < len; i++) { 167 | lines[i + startLine].justifyDy(justify * i); 168 | } 169 | } 170 | if (columnNum == columnCount || lastPage) { 171 | this.pages.add(TextPage(lines, dy)); 172 | lines = []; 173 | columnNum = 1; 174 | dx = _dx; 175 | } else { 176 | columnNum++; 177 | dx += columnWidth + columnGap; 178 | } 179 | dy = _dy; 180 | startLine = lines.length; 181 | } 182 | 183 | /// 新段落 184 | void newParagraph() { 185 | if (dy > _height2) { 186 | newPage(); 187 | } else { 188 | dy += paragraph; 189 | } 190 | } 191 | 192 | for (var p in this.paragraphs) { 193 | while (true) { 194 | tp.text = TextSpan(text: p, style: style); 195 | tp.layout(maxWidth: columnWidth); 196 | final textCount = tp.getPositionForOffset(offset).offset; 197 | double? spacing; 198 | final text = p.substring(0, textCount); 199 | if (tp.width > _width2) { 200 | tp.text = TextSpan(text: text, style: style); 201 | tp.layout(); 202 | spacing = (_width - tp.width) / textCount; 203 | } 204 | lines.add(TextLine(text, dx, dy, spacing)); 205 | dy += tp.height; 206 | if (p.length == textCount) { 207 | newParagraph(); 208 | break; 209 | } else { 210 | p = p.substring(textCount); 211 | if (dy > _height2) { 212 | newPage(); 213 | } 214 | } 215 | } 216 | } 217 | if (lines.isNotEmpty) { 218 | newPage(false, true); 219 | } 220 | if (this.pages.length == 0) { 221 | this.pages.add(TextPage([], 0)); 222 | } 223 | } 224 | 225 | /// 调试模式 输出布局信息 226 | bool debug; 227 | 228 | Widget getPageWidget([int pageIndex = 0]) { 229 | // if (pageIndex != null && !changePage(pageIndex)) return Container(); 230 | return Container( 231 | width: boxSize.width, 232 | height: 233 | boxSize.height.isInfinite ? pages[pageIndex].height : boxSize.height, 234 | child: CustomPaint( 235 | painter: PagePainter( 236 | pageIndex, pages[pageIndex], style, titleStyle, debug)), 237 | ); 238 | } 239 | 240 | Future getImage(int pageIndex) async { 241 | final recorder = ui.PictureRecorder(); 242 | final canvas = new Canvas(recorder, 243 | Rect.fromPoints(Offset.zero, Offset(boxSize.width, boxSize.height))); 244 | PagePainter(pageIndex, pages[pageIndex], style, titleStyle, debug) 245 | .paint(canvas, boxSize); 246 | final picture = recorder.endRecording(); 247 | return await picture.toImage(boxSize.width.floor(), boxSize.height.floor()); 248 | } 249 | 250 | void paint(int pageIndex, Canvas canvas) { 251 | PagePainter(pageIndex, pages[pageIndex], style, titleStyle, debug) 252 | .paint(canvas, boxSize); 253 | } 254 | } 255 | 256 | class PagePainter extends CustomPainter { 257 | final TextPage page; 258 | final TextStyle style; 259 | final TextStyle? titleStyle; 260 | final int pageIndex; 261 | final bool debug; 262 | const PagePainter(this.pageIndex, this.page, this.style, this.titleStyle, 263 | [this.debug = false]); 264 | 265 | @override 266 | void paint(Canvas canvas, Size size) { 267 | if (debug) 268 | print("****** [TextComposition paint start] [${DateTime.now()}] ******"); 269 | final lineCount = page.lines.length; 270 | final tp = TextPainter(textDirection: TextDirection.ltr, maxLines: 1); 271 | for (var i = 0; i < lineCount; i++) { 272 | final line = page.lines[i]; 273 | if (line.letterSpacing != null && 274 | (line.letterSpacing! < -0.1 || line.letterSpacing! > 0.1)) { 275 | tp.text = TextSpan( 276 | text: line.text, 277 | style: line.isTitle 278 | ? titleStyle?.copyWith(letterSpacing: line.letterSpacing) 279 | : style.copyWith(letterSpacing: line.letterSpacing), 280 | ); 281 | } else { 282 | tp.text = 283 | TextSpan(text: line.text, style: line.isTitle ? titleStyle : style); 284 | } 285 | final offset = Offset(line.dx, line.dy); 286 | if (debug) print("$offset ${line.text}"); 287 | tp.layout(); 288 | tp.paint(canvas, offset); 289 | } 290 | if (debug) 291 | print("****** [TextComposition paint end ] [${DateTime.now()}] ******"); 292 | } 293 | 294 | @override 295 | bool shouldRepaint(PagePainter old) { 296 | print("shouldRepaint"); 297 | return old.pageIndex != pageIndex; 298 | } 299 | } 300 | 301 | class TextPage { 302 | final List lines; 303 | final double height; 304 | const TextPage(this.lines, this.height); 305 | } 306 | 307 | class TextLine { 308 | final String text; 309 | double dx; 310 | double _dy; 311 | double get dy => _dy; 312 | final double? letterSpacing; 313 | final bool isTitle; 314 | TextLine( 315 | this.text, 316 | this.dx, 317 | double dy, [ 318 | this.letterSpacing = 0, 319 | this.isTitle = false, 320 | ]) : _dy = dy; 321 | 322 | justifyDy(double offsetDy) { 323 | _dy += offsetDy; 324 | } 325 | } 326 | -------------------------------------------------------------------------------- /pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.flutter-io.cn" 9 | source: hosted 10 | version: "2.5.0" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.flutter-io.cn" 16 | source: hosted 17 | version: "2.1.0" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.flutter-io.cn" 23 | source: hosted 24 | version: "1.1.0" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.flutter-io.cn" 30 | source: hosted 31 | version: "1.2.0" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.flutter-io.cn" 37 | source: hosted 38 | version: "1.1.0" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.flutter-io.cn" 44 | source: hosted 45 | version: "1.15.0" 46 | fake_async: 47 | dependency: transitive 48 | description: 49 | name: fake_async 50 | url: "https://pub.flutter-io.cn" 51 | source: hosted 52 | version: "1.2.0" 53 | flutter: 54 | dependency: "direct main" 55 | description: flutter 56 | source: sdk 57 | version: "0.0.0" 58 | flutter_test: 59 | dependency: "direct dev" 60 | description: flutter 61 | source: sdk 62 | version: "0.0.0" 63 | matcher: 64 | dependency: transitive 65 | description: 66 | name: matcher 67 | url: "https://pub.flutter-io.cn" 68 | source: hosted 69 | version: "0.12.10" 70 | meta: 71 | dependency: transitive 72 | description: 73 | name: meta 74 | url: "https://pub.flutter-io.cn" 75 | source: hosted 76 | version: "1.3.0" 77 | path: 78 | dependency: transitive 79 | description: 80 | name: path 81 | url: "https://pub.flutter-io.cn" 82 | source: hosted 83 | version: "1.8.0" 84 | sky_engine: 85 | dependency: transitive 86 | description: flutter 87 | source: sdk 88 | version: "0.0.99" 89 | source_span: 90 | dependency: transitive 91 | description: 92 | name: source_span 93 | url: "https://pub.flutter-io.cn" 94 | source: hosted 95 | version: "1.8.0" 96 | stack_trace: 97 | dependency: transitive 98 | description: 99 | name: stack_trace 100 | url: "https://pub.flutter-io.cn" 101 | source: hosted 102 | version: "1.10.0" 103 | stream_channel: 104 | dependency: transitive 105 | description: 106 | name: stream_channel 107 | url: "https://pub.flutter-io.cn" 108 | source: hosted 109 | version: "2.1.0" 110 | string_scanner: 111 | dependency: transitive 112 | description: 113 | name: string_scanner 114 | url: "https://pub.flutter-io.cn" 115 | source: hosted 116 | version: "1.1.0" 117 | term_glyph: 118 | dependency: transitive 119 | description: 120 | name: term_glyph 121 | url: "https://pub.flutter-io.cn" 122 | source: hosted 123 | version: "1.2.0" 124 | test_api: 125 | dependency: transitive 126 | description: 127 | name: test_api 128 | url: "https://pub.flutter-io.cn" 129 | source: hosted 130 | version: "0.2.19" 131 | typed_data: 132 | dependency: transitive 133 | description: 134 | name: typed_data 135 | url: "https://pub.flutter-io.cn" 136 | source: hosted 137 | version: "1.3.0" 138 | vector_math: 139 | dependency: transitive 140 | description: 141 | name: vector_math 142 | url: "https://pub.flutter-io.cn" 143 | source: hosted 144 | version: "2.1.0" 145 | sdks: 146 | dart: ">=2.12.0-0.0 <3.0.0" 147 | flutter: ">=1.17.0" 148 | -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: text_composition 2 | description: A new Flutter package project. 3 | version: 0.0.4 4 | publish_to: none 5 | author: mabdc 6 | homepage: https://github.com/mabDc/text_composition 7 | 8 | environment: 9 | sdk: ">=2.12.0-0 <3.0.0" 10 | flutter: ">=1.17.0" 11 | 12 | dependencies: 13 | flutter: 14 | sdk: flutter 15 | 16 | dev_dependencies: 17 | flutter_test: 18 | sdk: flutter 19 | -------------------------------------------------------------------------------- /test/lwlizhe.dart: -------------------------------------------------------------------------------- 1 | /// 改写自 https://github.com/lwlizhe/flutter_novel/blob/master/lib/app/novel/widget/reader/content/helper/animation/animation_page_simulation_turn.dart 2 | import 'dart:math' as math; 3 | import 'dart:ui'; 4 | import 'package:vector_math/vector_math_64.dart' as v; 5 | 6 | import 'package:flutter/material.dart'; 7 | 8 | /// 仿真翻页动画 /// 9 | class SimulationTurnPageAnimation { 10 | bool isStartAnimation = false; 11 | Offset minDragDistance = Offset(10, 10); 12 | 13 | Path mTopPagePath = Path(); 14 | Path mBottomPagePath = Path(); 15 | Path mTopBackAreaPagePath = Path(); 16 | Path mShadowPath = Path(); 17 | 18 | double mCornerX = 1; // 拖拽点对应的页脚 19 | double mCornerY = 1; 20 | 21 | late bool mIsRTandLB; // 是否属于右上左下 22 | 23 | Offset mBezierStart1 = new Offset(0, 0); // 贝塞尔曲线起始点 24 | Offset mBezierControl1 = new Offset(0, 0); // 贝塞尔曲线控制点 25 | Offset mBezierVertex1 = new Offset(0, 0); // 贝塞尔曲线顶点 26 | Offset mBezierEnd1 = new Offset(0, 0); // 贝塞尔曲线结束点 27 | 28 | Offset mBezierStart2 = new Offset(0, 0); // 另一条贝塞尔曲线 29 | Offset mBezierControl2 = new Offset(0, 0); 30 | Offset mBezierVertex2 = new Offset(0, 0); 31 | Offset mBezierEnd2 = new Offset(0, 0); 32 | 33 | late double mMiddleX; 34 | late double mMiddleY; 35 | late double mDegrees; 36 | late double mTouchToCornerDis; 37 | 38 | late double mMaxLength; 39 | 40 | TextPainter textPainter = TextPainter(textDirection: TextDirection.ltr); 41 | 42 | bool isTurnToNext = false; 43 | bool isConfirmAnimation = false; 44 | 45 | void calBezierPoint(Offset mTouch, Size currentSize) { 46 | mMiddleX = (mTouch.dx + mCornerX) / 2; 47 | mMiddleY = (mTouch.dy + mCornerY) / 2; 48 | 49 | mMaxLength = 50 | math.sqrt(math.pow(currentSize.width, 2) + math.pow(currentSize.height, 2)); 51 | 52 | mBezierControl1 = Offset( 53 | mMiddleX - (mCornerY - mMiddleY) * (mCornerY - mMiddleY) / (mCornerX - mMiddleX), 54 | mCornerY.toDouble()); 55 | 56 | double f4 = mCornerY - mMiddleY; 57 | if (f4 == 0) { 58 | mBezierControl2 = Offset(mCornerX.toDouble(), 59 | mMiddleY - (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / 0.1); 60 | } else { 61 | mBezierControl2 = Offset( 62 | mCornerX.toDouble(), 63 | mMiddleY - 64 | (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / (mCornerY - mMiddleY)); 65 | } 66 | 67 | mBezierStart1 = Offset( 68 | mBezierControl1.dx - (mCornerX - mBezierControl1.dx) / 2, mCornerY.toDouble()); 69 | 70 | // 当mBezierStart1.x < 0或者mBezierStart1.x > 480时 71 | // 如果继续翻页，会出现BUG故在此限制 72 | if (mTouch.dx > 0 && mTouch.dx < currentSize.width) { 73 | if (mBezierStart1.dx < 0 || mBezierStart1.dx > currentSize.width) { 74 | if (mBezierStart1.dx < 0) { 75 | mBezierStart1 = Offset(currentSize.width - mBezierStart1.dx, mBezierStart1.dy); 76 | } 77 | 78 | double f1 = (mCornerX - mTouch.dx).abs(); 79 | double f2 = currentSize.width * f1 / mBezierStart1.dx; 80 | mTouch = Offset((mCornerX - f2).abs(), mTouch.dy); 81 | 82 | double f3 = (mCornerX - mTouch.dx).abs() * (mCornerY - mTouch.dy).abs() / f1; 83 | mTouch = Offset((mCornerX - f2).abs(), (mCornerY - f3).abs()); 84 | 85 | mMiddleX = (mTouch.dx + mCornerX) / 2; 86 | mMiddleY = (mTouch.dy + mCornerY) / 2; 87 | 88 | mBezierControl1 = Offset( 89 | mMiddleX - 90 | (mCornerY - mMiddleY) * (mCornerY - mMiddleY) / (mCornerX - mMiddleX), 91 | mCornerY); 92 | 93 | double f5 = mCornerY - mMiddleY; 94 | if (f5 == 0) { 95 | mBezierControl2 = Offset( 96 | mCornerX, mMiddleY - (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / 0.1); 97 | } else { 98 | mBezierControl2 = Offset( 99 | mCornerX, 100 | mMiddleY - 101 | (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / (mCornerY - mMiddleY)); 102 | } 103 | 104 | mBezierStart1 = Offset( 105 | mBezierControl1.dx - (mCornerX - mBezierControl1.dx) / 2, mBezierStart1.dy); 106 | } 107 | } 108 | 109 | mBezierStart2 = Offset( 110 | mCornerX.toDouble(), mBezierControl2.dy - (mCornerY - mBezierControl2.dy) / 2); 111 | 112 | mTouchToCornerDis = math 113 | .sqrt(math.pow((mTouch.dx - mCornerX), 2) + math.pow((mTouch.dy - mCornerY), 2)); 114 | 115 | mBezierEnd1 = getCross(mTouch, mBezierControl1, mBezierStart1, mBezierStart2); 116 | mBezierEnd2 = getCross(mTouch, mBezierControl2, mBezierStart1, mBezierStart2); 117 | 118 | mBezierVertex1 = Offset( 119 | (mBezierStart1.dx + 2 * mBezierControl1.dx + mBezierEnd1.dx) / 4, 120 | (2 * mBezierControl1.dy + mBezierStart1.dy + mBezierEnd1.dy) / 4); 121 | 122 | mBezierVertex2 = Offset( 123 | (mBezierStart2.dx + 2 * mBezierControl2.dx + mBezierEnd2.dx) / 4, 124 | (2 * mBezierControl2.dy + mBezierStart2.dy + mBezierEnd2.dy) / 4); 125 | } 126 | 127 | /// 获取交点 /// 128 | Offset getCross(Offset p1, Offset p2, Offset p3, Offset p4) { 129 | // 二元函数通式： y=kx+b(k是斜率) 130 | double k1 = (p2.dy - p1.dy) / (p2.dx - p1.dx); 131 | double b1 = ((p1.dx * p2.dy) - (p2.dx * p1.dy)) / (p1.dx - p2.dx); 132 | 133 | double k2 = (p4.dy - p3.dy) / (p4.dx - p3.dx); 134 | double b2 = ((p3.dx * p4.dy) - (p4.dx * p3.dy)) / (p3.dx - p4.dx); 135 | 136 | return Offset((b2 - b1) / (k1 - k2), k1 * ((b2 - b1) / (k1 - k2)) + b1); 137 | } 138 | 139 | /// 计算拖拽点对应的拖拽脚 /// 140 | void calcCornerXY(double x, double y, Size currentSize) { 141 | if (x <= currentSize.width / 2) { 142 | mCornerX = 0; 143 | } else { 144 | mCornerX = currentSize.width; 145 | } 146 | if (y <= currentSize.height / 2) { 147 | mCornerY = 0; 148 | } else { 149 | mCornerY = currentSize.height; 150 | } 151 | 152 | if ((mCornerX == 0 && mCornerY == currentSize.height) || 153 | (mCornerX == currentSize.width && mCornerY == 0)) { 154 | mIsRTandLB = true; 155 | } else { 156 | mIsRTandLB = false; 157 | } 158 | } 159 | 160 | void onTouchEvent(Offset mTouch, Size currentSize, bool initTapDow) { 161 | if (initTapDow) calcCornerXY(mTouch.dx, mTouch.dy, currentSize); 162 | calBezierPoint(mTouch, currentSize); 163 | } 164 | 165 | void onDraw( 166 | Canvas canvas, Offset mTouch, Size currentSize, Picture picture, Color bgColor) { 167 | if (isStartAnimation && (mTouch.dx != 0 && mTouch.dy != 0)) { 168 | drawTopPageCanvas(canvas, mTouch, currentSize, picture); 169 | drawBottomPageCanvas(canvas, mTouch, currentSize, picture); 170 | drawTopPageBackArea(canvas, mTouch, currentSize, bgColor); 171 | } else { 172 | // var targetPicture=readerViewModel?.getCurrentPage()?.pagePicture; 173 | // if(targetPicture!=null) { 174 | // canvas.drawPicture(targetPicture); 175 | // } 176 | } 177 | 178 | isStartAnimation = false; 179 | } 180 | 181 | /// 画在最顶上的那页 /// 182 | void drawTopPageCanvas( 183 | Canvas canvas, Offset mTouch, Size currentSize, Picture picture) { 184 | mTopPagePath.reset(); 185 | 186 | mTopPagePath.moveTo(mCornerX == 0 ? currentSize.width : 0, mCornerY); 187 | mTopPagePath.lineTo(mBezierStart1.dx, mBezierStart1.dy); 188 | mTopPagePath.quadraticBezierTo( 189 | mBezierControl1.dx, mBezierControl1.dy, mBezierEnd1.dx, mBezierEnd1.dy); 190 | mTopPagePath.lineTo(mTouch.dx, mTouch.dy); 191 | mTopPagePath.lineTo(mBezierEnd2.dx, mBezierEnd2.dy); 192 | mTopPagePath.quadraticBezierTo( 193 | mBezierControl2.dx, mBezierControl2.dy, mBezierStart2.dx, mBezierStart2.dy); 194 | mTopPagePath.lineTo(mCornerX, mCornerY == 0 ? currentSize.height : 0); 195 | mTopPagePath.lineTo( 196 | mCornerX == 0 ? currentSize.width : 0, mCornerY == 0 ? currentSize.height : 0); 197 | mTopPagePath.close(); 198 | 199 | /// 去掉PATH圈在屏幕外的区域，减少GPU使用 200 | mTopPagePath = Path.combine( 201 | PathOperation.intersect, 202 | Path() 203 | ..moveTo(0, 0) 204 | ..lineTo(currentSize.width, 0) 205 | ..lineTo(currentSize.width, currentSize.height) 206 | ..lineTo(0, currentSize.height) 207 | ..close(), 208 | mTopPagePath); 209 | 210 | canvas.save(); 211 | 212 | // canvas.drawImageRect( 213 | // readerViewModel.getCurrentPage().pageImage, 214 | // Offset.zero & currentSize, 215 | // Offset.zero & currentSize, 216 | // Paint()..isAntiAlias = true); 217 | canvas.drawPicture(picture); 218 | 219 | drawTopPageShadow(canvas, mTouch, currentSize); 220 | 221 | canvas.restore(); 222 | } 223 | 224 | /// 画顶部页的阴影 /// 225 | void drawTopPageShadow(Canvas canvas, Offset mTouch, Size currentSize) { 226 | Path shadowPath = Path(); 227 | 228 | int dx = mCornerX == 0 ? 5 : -5; 229 | int dy = mCornerY == 0 ? 5 : -5; 230 | 231 | shadowPath = Path.combine( 232 | PathOperation.intersect, 233 | Path() 234 | ..moveTo(0, 0) 235 | ..lineTo(currentSize.width, 0) 236 | ..lineTo(currentSize.width, currentSize.height) 237 | ..lineTo(0, currentSize.height) 238 | ..close(), 239 | Path() 240 | ..moveTo(mTouch.dx + dx, mTouch.dy + dy) 241 | ..lineTo(mBezierControl2.dx + dx, mBezierControl2.dy + dy) 242 | ..lineTo(mBezierControl1.dx + dx, mBezierControl1.dy + dy) 243 | ..close()); 244 | 245 | canvas.drawShadow(shadowPath, Colors.black, 5, true); 246 | } 247 | 248 | /// 画翻起来的底下那页 /// 249 | void drawBottomPageCanvas( 250 | Canvas canvas, Offset mTouch, Size currentSize, Picture picture) { 251 | mBottomPagePath.reset(); 252 | mBottomPagePath.moveTo(mCornerX, mCornerY); 253 | mBottomPagePath.lineTo(mBezierStart1.dx, mBezierStart1.dy); 254 | mBottomPagePath.quadraticBezierTo( 255 | mBezierControl1.dx, mBezierControl1.dy, mBezierEnd1.dx, mBezierEnd1.dy); 256 | mBottomPagePath.lineTo(mBezierEnd2.dx, mBezierEnd2.dy); 257 | mBottomPagePath.quadraticBezierTo( 258 | mBezierControl2.dx, mBezierControl2.dy, mBezierStart2.dx, mBezierStart2.dy); 259 | mBottomPagePath.close(); 260 | 261 | Path extraRegion = Path(); 262 | 263 | extraRegion.reset(); 264 | extraRegion.moveTo(mTouch.dx, mTouch.dy); 265 | extraRegion.lineTo(mBezierVertex1.dx, mBezierVertex1.dy); 266 | extraRegion.lineTo(mBezierVertex2.dx, mBezierVertex2.dy); 267 | extraRegion.close(); 268 | 269 | mBottomPagePath = 270 | Path.combine(PathOperation.difference, mBottomPagePath, extraRegion); 271 | 272 | // /// 使用fillType来反选填充区域 /// 273 | // mBottomPagePath = mTopPagePath 274 | // ..addRect(Offset.zero & currentSize) 275 | // ..addPath(mTopBackAreaPagePath, Offset(0, 0)) 276 | // ..fillType = PathFillType.evenOdd; 277 | 278 | /// 去掉PATH圈在屏幕外的区域，减少GPU使用 279 | mBottomPagePath = Path.combine( 280 | PathOperation.intersect, 281 | Path() 282 | ..moveTo(0, 0) 283 | ..lineTo(currentSize.width, 0) 284 | ..lineTo(currentSize.width, currentSize.height) 285 | ..lineTo(0, currentSize.height) 286 | ..close(), 287 | mBottomPagePath); 288 | 289 | canvas.save(); 290 | canvas.clipPath(mBottomPagePath, doAntiAlias: false); 291 | // canvas.drawPaint(Paint()..color = Color(0xfffff2cc)); 292 | // canvas.drawImageRect( 293 | // isTurnToNext?readerViewModel.getNextPage().pageImage:readerViewModel.getPrePage().pageImage, 294 | // Offset.zero & currentSize, 295 | // Offset.zero & currentSize, 296 | // Paint() 297 | // ..isAntiAlias = true 298 | // ..blendMode = BlendMode.srcATop); 299 | // canvas.drawPicture(isTurnToNext 300 | // ? readerViewModel.getNextPage().pagePicture 301 | // : readerViewModel.getPrePage().pagePicture); 302 | // 303 | canvas.drawPicture(picture); 304 | drawBottomPageShadow(canvas); 305 | 306 | canvas.restore(); 307 | } 308 | 309 | /// 画底下那页的阴影 /// 310 | void drawBottomPageShadow(Canvas canvas) { 311 | double left; 312 | double right; 313 | 314 | Gradient shadowGradient; 315 | if (mIsRTandLB) { 316 | //左下及右上 317 | left = 0; 318 | right = mTouchToCornerDis / 4; 319 | 320 | shadowGradient = new LinearGradient( 321 | colors: [ 322 | Color(0xAA000000), 323 | Colors.transparent, 324 | ], 325 | ); 326 | } else { 327 | left = -mTouchToCornerDis / 4; 328 | right = 0; 329 | 330 | shadowGradient = new LinearGradient( 331 | colors: [ 332 | Colors.transparent, 333 | Color(0xAA000000), 334 | ], 335 | ); 336 | } 337 | 338 | canvas.translate(mBezierStart1.dx, mBezierStart1.dy); 339 | canvas 340 | .rotate(math.atan2(mBezierControl1.dx - mCornerX, mBezierControl2.dy - mCornerY)); 341 | 342 | var shadowPaint = Paint() 343 | ..isAntiAlias = false 344 | ..style = PaintingStyle.fill //填充 345 | ..shader = shadowGradient.createShader(Rect.fromLTRB(left, 0, right, mMaxLength)); 346 | 347 | canvas.drawRect(Rect.fromLTRB(left, 0, right, mMaxLength), shadowPaint); 348 | } 349 | 350 | /// 画在最顶上的那页的翻转过来的部分 /// 351 | /// 仿真翻页中性能损失最大的部分，注释掉drawTopPageBackArea能保证绘制会在16ms以内，但是去掉注释，部分情况甚至会到40+ 352 | /// 盲猜是过于复杂的图层处理导致的(Flutter的图层处理性能还是不如原生啊……但是好像图层绘制性能很强大，好像甚至优于原生) 353 | void drawTopPageBackArea( 354 | Canvas canvas, Offset mTouch, Size currentSize, Color bgcolor) { 355 | mBottomPagePath.reset(); 356 | mBottomPagePath.moveTo(mCornerX, mCornerY); 357 | mBottomPagePath.lineTo(mBezierStart1.dx, mBezierStart1.dy); 358 | mBottomPagePath.quadraticBezierTo( 359 | mBezierControl1.dx, mBezierControl1.dy, mBezierEnd1.dx, mBezierEnd1.dy); 360 | mBottomPagePath.lineTo(mTouch.dx, mTouch.dy); 361 | mBottomPagePath.lineTo(mBezierEnd2.dx, mBezierEnd2.dy); 362 | mBottomPagePath.quadraticBezierTo( 363 | mBezierControl2.dx, mBezierControl2.dy, mBezierStart2.dx, mBezierStart2.dy); 364 | mBottomPagePath.close(); 365 | 366 | Path tempBackAreaPath = Path(); 367 | 368 | tempBackAreaPath.reset(); 369 | tempBackAreaPath.moveTo(mBezierVertex1.dx, mBezierVertex1.dy); 370 | tempBackAreaPath.lineTo(mBezierVertex2.dx, mBezierVertex2.dy); 371 | tempBackAreaPath.lineTo(mTouch.dx, mTouch.dy); 372 | tempBackAreaPath.close(); 373 | 374 | if (tempBackAreaPath == null || mBottomPagePath == null) { 375 | return; 376 | } 377 | 378 | /// 取path 相交部分 /// 379 | mTopBackAreaPagePath = 380 | Path.combine(PathOperation.intersect, tempBackAreaPath, mBottomPagePath); 381 | 382 | /// 去掉PATH圈在屏幕外的区域，减少GPU使用 383 | mTopBackAreaPagePath = Path.combine( 384 | PathOperation.intersect, 385 | Path() 386 | ..moveTo(0, 0) 387 | ..lineTo(currentSize.width, 0) 388 | ..lineTo(currentSize.width, currentSize.height) 389 | ..lineTo(0, currentSize.height) 390 | ..close(), 391 | mTopBackAreaPagePath); 392 | 393 | canvas.save(); 394 | 395 | canvas.clipPath(mTopBackAreaPagePath); 396 | canvas.drawPaint(Paint()..color = bgcolor); 397 | 398 | canvas.save(); 399 | 400 | mTopBackAreaPagePath.getBounds(); 401 | 402 | canvas.translate(mBezierControl1.dx, mBezierControl1.dy); 403 | 404 | /// 矩阵公式：α表示翻转页面和边的夹角 405 | /// https://juejin.im/post/5a32ade0f265da43252954b2 406 | /// 407 | /// -(1-2sin(a)^2 ) 2sin(a)cos(a) 0 408 | /// 2sin(a)cos(a) 1-2sin(a)^2 0 409 | /// 0 0 1 410 | 411 | double dis = math.sqrt(math.pow((mCornerX - mBezierControl1.dx), 2) + 412 | math.pow((mBezierControl2.dy - mCornerY), 2)); 413 | double sinAngle = (mCornerX - mBezierControl1.dx) / dis; 414 | double cosAngle = (mBezierControl2.dy - mCornerY) / dis; 415 | 416 | Matrix4 matrix4 = Matrix4.columns( 417 | v.Vector4(-(1 - 2 * sinAngle * sinAngle), 2 * sinAngle * cosAngle, 0, 0), 418 | v.Vector4(2 * sinAngle * cosAngle, (1 - 2 * sinAngle * sinAngle), 0, 0), 419 | v.Vector4(0, 0, 1, 0), 420 | v.Vector4(0, 0, 0, 1)); 421 | 422 | matrix4.translate(-mBezierControl1.dx, -mBezierControl1.dy); 423 | canvas.transform(matrix4.storage); 424 | 425 | /// 用image处理有奇效……原因未知，好像是picture是保存了绘制信息的原因，所以像这种n次平移->翻转->半透明图层叠加->裁剪->加阴影 的复杂操作处理不过来 426 | /// image相对简单，就是张图片，处理了就处理了，不会留下需要保存的信息 427 | /// 反正是一个半透明处理的，所以对清晰度没要求，所以这里用image绘制 428 | /// 我个人的猜测……求精通底层的大佬解惑 429 | // canvas.drawImageRect( 430 | // readerViewModel.getCurrentPage().pageImage, 431 | // Offset.zero & currentSize, 432 | // Offset.zero & currentSize, 433 | // Paint()..isAntiAlias = true); 434 | // canvas.drawImage(configManager.currentPageImage, Offset.zero, Paint()..isAntiAlias=true); 435 | // canvas.drawPicture(configManager.currentPagePicture); 436 | // canvas.drawPaint(Paint()..color = Color(0xCCFFFFFF)); 437 | // canvas.drawPaint(Paint()..color =Colors.blue); 438 | canvas.drawPaint(Paint()..color = Color(bgcolor.value & 0xAAFFFFFF)); 439 | // canvas.drawPaint(Paint()..color = Color(0xAAfff2cc)); 440 | 441 | canvas.restore(); 442 | 443 | drawTopPageBackAreaShadow(canvas); 444 | 445 | canvas.restore(); 446 | } 447 | 448 | /// 画翻起页的阴影 /// 449 | void drawTopPageBackAreaShadow(Canvas canvas) { 450 | double i = (mBezierStart1.dx + mBezierControl1.dx) / 2; 451 | double f1 = (i - mBezierControl1.dx).abs(); 452 | double i1 = (mBezierStart2.dy + mBezierControl2.dy) / 2; 453 | double f2 = (i1 - mBezierControl2.dy).abs(); 454 | double f3 = math.min(f1, f2); 455 | 456 | double left; 457 | double right; 458 | double width; 459 | if (mIsRTandLB) { 460 | left = (mBezierStart1.dx - 1); 461 | right = (mBezierStart1.dx + f3 + 1); 462 | width = right - left; 463 | } else { 464 | left = (mBezierStart1.dx - f3 - 1); 465 | right = (mBezierStart1.dx + 1); 466 | width = left - right; 467 | } 468 | 469 | canvas.translate(mBezierStart1.dx, mBezierStart1.dy); 470 | canvas 471 | .rotate(math.atan2(mBezierControl1.dx - mCornerX, mBezierControl2.dy - mCornerY)); 472 | 473 | Gradient shadowGradient = new LinearGradient( 474 | colors: [ 475 | Colors.transparent, 476 | Color(0xAA000000), 477 | ], 478 | ); 479 | 480 | var shadowPaint = Paint() 481 | ..isAntiAlias = true 482 | ..style = PaintingStyle.fill //填充 483 | ..shader = shadowGradient.createShader(Rect.fromLTRB(0, 0, width, mMaxLength)); 484 | 485 | canvas.drawRect(Rect.fromLTRB(0, 0, width, mMaxLength), shadowPaint); 486 | } 487 | } 488 | -------------------------------------------------------------------------------- /test/text_composition_test.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter_test/flutter_test.dart'; 2 | 3 | import 'package:text_composition/text_composition.dart'; 4 | 5 | void main() { 6 | test('test number equal', () { 7 | print("start ${DateTime.now()}"); 8 | var sum = 0.0; // sum = 1 + 1/2 + 1/3 + ... 9 | for (var i = 1; i < 10000; i++) { 10 | sum += 1 / i; 11 | final _ = (sum * i).round(); 12 | } 13 | print("end ${DateTime.now()}"); 14 | expect(1, 1); 15 | }); 16 | } 17 | --------------------------------------------------------------------------------