├── example ├── ios │ ├── Runner │ │ ├── Runner-Bridging-Header.h │ │ ├── Assets.xcassets │ │ │ ├── LaunchImage.imageset │ │ │ │ ├── LaunchImage.png │ │ │ │ ├── LaunchImage@2x.png │ │ │ │ ├── LaunchImage@3x.png │ │ │ │ ├── README.md │ │ │ │ └── Contents.json │ │ │ └── AppIcon.appiconset │ │ │ │ ├── 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-1024x1024@1x.png │ │ │ │ ├── Icon-App-83.5x83.5@2x.png │ │ │ │ └── Contents.json │ │ ├── AppDelegate.swift │ │ ├── Base.lproj │ │ │ ├── Main.storyboard │ │ │ └── LaunchScreen.storyboard │ │ └── Info.plist │ ├── Flutter │ │ ├── Debug.xcconfig │ │ ├── Release.xcconfig │ │ └── AppFrameworkInfo.plist │ ├── Runner.xcodeproj │ │ ├── project.xcworkspace │ │ │ └── contents.xcworkspacedata │ │ ├── xcshareddata │ │ │ └── xcschemes │ │ │ │ └── Runner.xcscheme │ │ └── project.pbxproj │ ├── Runner.xcworkspace │ │ └── contents.xcworkspacedata │ ├── .gitignore │ ├── Podfile.lock │ └── Podfile ├── assets │ ├── bridge.jpg │ └── sunset.jpeg ├── preview │ └── preview1.png ├── android │ ├── gradle.properties │ ├── .gitignore │ ├── app │ │ ├── src │ │ │ └── main │ │ │ │ ├── res │ │ │ │ ├── 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 │ │ │ │ │ └── styles.xml │ │ │ │ └── drawable │ │ │ │ │ └── launch_background.xml │ │ │ │ ├── kotlin │ │ │ │ └── example │ │ │ │ │ └── example │ │ │ │ │ └── MainActivity.kt │ │ │ │ └── AndroidManifest.xml │ │ └── build.gradle │ ├── gradle │ │ └── wrapper │ │ │ └── gradle-wrapper.properties │ ├── settings.gradle │ └── build.gradle ├── README.md ├── lib │ ├── image_preview_page.dart │ ├── main.dart │ ├── helper_page.dart │ └── widget_page.dart ├── .gitignore └── pubspec.yaml ├── .gitattributes ├── lib ├── merge_images.dart └── src │ ├── merge_painter.dart │ ├── images_merge.dart │ └── images_merge_helper.dart ├── CHANGELOG.md ├── .gitignore ├── LICENSE ├── pubspec.yaml ├── README(CH).md └── README.md /example/ios/Runner/Runner-Bridging-Header.h: -------------------------------------------------------------------------------- 1 | #import "GeneratedPluginRegistrant.h" -------------------------------------------------------------------------------- /.gitattributes: -------------------------------------------------------------------------------- 1 | # Auto detect text files and perform LF normalization 2 | * text=auto 3 | -------------------------------------------------------------------------------- /example/assets/bridge.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xiaozhizhong/merge_images/HEAD/example/assets/bridge.jpg -------------------------------------------------------------------------------- /example/assets/sunset.jpeg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xiaozhizhong/merge_images/HEAD/example/assets/sunset.jpeg -------------------------------------------------------------------------------- /example/preview/preview1.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xiaozhizhong/merge_images/HEAD/example/preview/preview1.png -------------------------------------------------------------------------------- /example/ios/Flutter/Debug.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig" 2 | #include "Generated.xcconfig" 3 | -------------------------------------------------------------------------------- /example/android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | android.enableR8=true 3 | android.useAndroidX=true 4 | android.enableJetifier=true 5 | -------------------------------------------------------------------------------- /example/ios/Flutter/Release.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig" 2 | #include "Generated.xcconfig" 3 | -------------------------------------------------------------------------------- /example/android/.gitignore: -------------------------------------------------------------------------------- 1 | gradle-wrapper.jar 2 | /.gradle 3 | /captures/ 4 | /gradlew 5 | /gradlew.bat 6 | /local.properties 7 | GeneratedPluginRegistrant.java 8 | -------------------------------------------------------------------------------- /lib/merge_images.dart: -------------------------------------------------------------------------------- 1 | library merge_images; 2 | 3 | export 'package:merge_images/src/images_merge_helper.dart'; 4 | export 'package:merge_images/src/images_merge.dart'; 5 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xiaozhizhong/merge_images/HEAD/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/xiaozhizhong/merge_images/HEAD/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/xiaozhizhong/merge_images/HEAD/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/xiaozhizhong/merge_images/HEAD/example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png 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-------------------------------------------------------------------------------- 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-5.6.2-all.zip 7 | -------------------------------------------------------------------------------- /example/ios/Runner.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | ## [0.0.1] 2 | 3 | * initial release 4 | 5 | ## [1.0.0] 6 | 7 | * resolve dependency, format code 8 | 9 | ## [1.0.1] 10 | 11 | * remove unused files 12 | 13 | ## [1.0.2] 14 | 15 | * update ImagesMergeHelper 16 | 17 | ## [1.0.3] 18 | 19 | * fix bugs of ImagesMergeHelper 20 | 21 | ## [2.0.0-nullsafety] 22 | * migrate to null-safety -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md: -------------------------------------------------------------------------------- 1 | # Launch Screen Assets 2 | 3 | You can customize the launch screen with your own desired assets by replacing the image files in this directory. 4 | 5 | You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images. -------------------------------------------------------------------------------- /example/android/app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 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 | -------------------------------------------------------------------------------- /example/android/app/src/main/kotlin/example/example/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package example.example 2 | 3 | import androidx.annotation.NonNull; 4 | import io.flutter.embedding.android.FlutterActivity 5 | import io.flutter.embedding.engine.FlutterEngine 6 | import io.flutter.plugins.GeneratedPluginRegistrant 7 | 8 | class MainActivity: FlutterActivity() { 9 | override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) { 10 | GeneratedPluginRegistrant.registerWith(flutterEngine); 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/drawable/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "universal", 5 | "filename" : "LaunchImage.png", 6 | "scale" : "1x" 7 | }, 8 | { 9 | "idiom" : "universal", 10 | "filename" : "LaunchImage@2x.png", 11 | "scale" : "2x" 12 | }, 13 | { 14 | "idiom" : "universal", 15 | "filename" : "LaunchImage@3x.png", 16 | "scale" : "3x" 17 | } 18 | ], 19 | "info" : { 20 | "version" : 1, 21 | "author" : "xcode" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /example/android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() 4 | 5 | def plugins = new Properties() 6 | def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') 7 | if (pluginsFile.exists()) { 8 | pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } 9 | } 10 | 11 | plugins.each { name, path -> 12 | def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() 13 | include ":$name" 14 | project(":$name").projectDir = pluginDirectory 15 | } 16 | -------------------------------------------------------------------------------- /example/README.md: -------------------------------------------------------------------------------- 1 | # example 2 | 3 | merge images example application. 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/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/lib/image_preview_page.dart: -------------------------------------------------------------------------------- 1 | import 'dart:typed_data'; 2 | 3 | import 'package:flutter/material.dart'; 4 | 5 | /// 6 | ///@author xiaozhizhong 7 | ///@date 2020/4/4 8 | ///@description images preview page 9 | /// 10 | class Preview extends StatelessWidget { 11 | Preview(this.image); 12 | 13 | final Uint8List image; 14 | 15 | @override 16 | Widget build(BuildContext context) { 17 | return Scaffold( 18 | appBar: AppBar( 19 | title: Text("preview"), 20 | ), 21 | body: Container( 22 | alignment: Alignment.center, 23 | padding: EdgeInsets.symmetric(vertical: 50, horizontal: 30), 24 | child: Image.memory(image), 25 | ), 26 | ); 27 | } 28 | } 29 | -------------------------------------------------------------------------------- /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:3.5.0' 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/.gitignore: -------------------------------------------------------------------------------- 1 | # See https://www.dartlang.org/guides/libraries/private-files 2 | .idea 3 | .DS_Store 4 | .flutter-plugins/ 5 | .flutter-plugins-dependencies/ 6 | .metadata 7 | *.iml 8 | 9 | # Files and directories created by pub 10 | .dart_tool/ 11 | .packages 12 | .pub/ 13 | build/ 14 | # If you're building an application, you may want to check-in your pubspec.lock 15 | pubspec.lock 16 | 17 | # Directory created by dartdoc 18 | # If you don't generate documentation locally you can remove this line. 19 | doc/api/ 20 | 21 | # Avoid committing generated Javascript files: 22 | *.dart.js 23 | *.info.json # Produced by the --dump-info flag. 24 | *.js # When generated by dart2js. Don't specify *.js if your 25 | # project includes source files written in JavaScript. 26 | *.js_ 27 | *.js.deps 28 | *.js.map 29 | -------------------------------------------------------------------------------- /example/ios/Podfile.lock: -------------------------------------------------------------------------------- 1 | PODS: 2 | - Flutter (1.0.0) 3 | - path_provider (0.0.1): 4 | - Flutter 5 | - path_provider_macos (0.0.1): 6 | - Flutter 7 | 8 | DEPENDENCIES: 9 | - Flutter (from `Flutter`) 10 | - path_provider (from `.symlinks/plugins/path_provider/ios`) 11 | - path_provider_macos (from `.symlinks/plugins/path_provider_macos/ios`) 12 | 13 | EXTERNAL SOURCES: 14 | Flutter: 15 | :path: Flutter 16 | path_provider: 17 | :path: ".symlinks/plugins/path_provider/ios" 18 | path_provider_macos: 19 | :path: ".symlinks/plugins/path_provider_macos/ios" 20 | 21 | SPEC CHECKSUMS: 22 | Flutter: 0e3d915762c693b495b44d77113d4970485de6ec 23 | path_provider: fb74bd0465e96b594bb3b5088ee4a4e7bb1f2a9d 24 | path_provider_macos: f760a3c5b04357c380e2fddb6f9db6f3015897e0 25 | 26 | PODFILE CHECKSUM: 1b66dae606f75376c5f2135a8290850eeb09ae83 27 | 28 | COCOAPODS: 1.9.1 29 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # See https://www.dartlang.org/guides/libraries/private-files 2 | .idea 3 | .DS_Store 4 | .flutter-plugins/ 5 | .flutter-plugins-dependencies/ 6 | .flutter-plugins 7 | .flutter-plugins-dependencies 8 | .metadata 9 | *.iml 10 | .gradle/ 11 | 12 | # Files and directories created by pub 13 | .dart_tool/ 14 | .packages 15 | .pub/ 16 | build/ 17 | # If you're building an application, you may want to check-in your pubspec.lock 18 | pubspec.lock 19 | 20 | # Directory created by dartdoc 21 | # If you don't generate documentation locally you can remove this line. 22 | doc/api/ 23 | 24 | # Avoid committing generated Javascript files: 25 | *.dart.js 26 | *.info.json # Produced by the --dump-info flag. 27 | *.js # When generated by dart2js. Don't specify *.js if your 28 | # project includes source files written in JavaScript. 29 | *.js_ 30 | *.js.deps 31 | *.js.map 32 | 33 | .fvm/ 34 | -------------------------------------------------------------------------------- /example/ios/Flutter/AppFrameworkInfo.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 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 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020 xiaozhizhong 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /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/android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 9 | 13 | 20 | 21 | 22 | 23 | 24 | 25 | 27 | 30 | 31 | 32 | -------------------------------------------------------------------------------- /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 | NSAppTransportSecurity 45 | 46 | NSAllowsArbitraryLoads 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: merge_images 2 | description: A package that can merge images into one, support vertical and horizontal direction. 3 | version: 2.0.0-nullsafety 4 | homepage: https://github.com/xiaozhizhong/merge_images 5 | 6 | environment: 7 | sdk: '>=2.12.0 <3.0.0' 8 | 9 | dependencies: 10 | flutter: 11 | sdk: flutter 12 | path_provider: ^2.0.1 13 | 14 | dev_dependencies: 15 | flutter_test: 16 | sdk: flutter 17 | 18 | # For information on the generic Dart part of this file, see the 19 | # following page: https://dart.dev/tools/pub/pubspec 20 | 21 | # The following section is specific to Flutter. 22 | flutter: 23 | 24 | # To add assets to your package, add an assets section, like this: 25 | # assets: 26 | # - images/a_dot_burr.jpeg 27 | # - images/a_dot_ham.jpeg 28 | # 29 | # For details regarding assets in packages, see 30 | # https://flutter.dev/assets-and-images/#from-packages 31 | # 32 | # An image asset can refer to one or more resolution-specific "variants", see 33 | # https://flutter.dev/assets-and-images/#resolution-aware. 34 | 35 | # To add custom fonts to your package, add a fonts section here, 36 | # in this "flutter" section. Each entry in this list should have a 37 | # "family" key with the font family name, and a "fonts" key with a 38 | # list giving the asset and other descriptors for the font. For 39 | # example: 40 | # fonts: 41 | # - family: Schyler 42 | # fonts: 43 | # - asset: fonts/Schyler-Regular.ttf 44 | # - asset: fonts/Schyler-Italic.ttf 45 | # style: italic 46 | # - family: Trajan Pro 47 | # fonts: 48 | # - asset: fonts/TrajanPro.ttf 49 | # - asset: fonts/TrajanPro_Bold.ttf 50 | # weight: 700 51 | # 52 | # For details regarding fonts in packages, see 53 | # https://flutter.dev/custom-fonts/#from-packages 54 | -------------------------------------------------------------------------------- /README(CH).md: -------------------------------------------------------------------------------- 1 | # merge_images in flutter 2 | 3 | 4 | 5 | ## 简介 6 | 合并图片（垂直或水平方向） 7 | 8 | ![Preview](example/preview/preview1.png) 9 | 10 | ## 特性 11 | * 支持水平和垂直方向 12 | * 提供helper可在代码中合并多张图片并得到合并后的图片，也提供widget直接合并并显示图片。 13 | * 可自动缩放图片以保持一致（垂直时对齐宽度，水平时对齐高度） 14 | 15 | ## 用法 16 | #### ImagesMergeHelper 17 | 使用这个helper在代码中合并图片 18 | 19 | ``` dart 20 | ui.Image image = await ImagesMergeHelper.margeImages( 21 | [assetImage1,assetImage2,providerImage],///必传，图片list 22 | fit: true,///是否缩放图片以保持一致 23 | direction: Axis.vertical,///合并的方向 24 | backgroundColor: Colors.black26);///背景颜色 25 | ``` 26 | 此外，它也提供了几个方法做图片类型的转换: 27 | ``` dart 28 | ///ui.Image to Uint8List 29 | Uint8List bytes = await ImagesMergeHelper.imageToUint8List(image); 30 | ///ui.Image to File 31 | File file = await ImagesMergeHelper.imageToFile(image); 32 | ///Uint8List to ui.Image 33 | ui.Image image = await ImagesMergeHelper.uint8ListToImage(imageBytes); 34 | ///file to ui.Image 35 | ui.Image image = await ImagesMergeHelper.loadImageFromFile(file); 36 | ///asset to ui.Image 37 | ui.Image image = await ImagesMergeHelper.loadImageFromAsset(assetPath); 38 | ///ImageProvider to ui.Image 39 | ui.Image image = await ImagesMergeHelper.loadImageFromProvider(imageProvider); 40 | 41 | ``` 42 | #### ImageMerge 43 | 使用这个widget直接显示图片 44 | ``` dart 45 | ImagesMerge( 46 | imageList,///必传，图片list 47 | direction: Axis.vertical,///合并方向 48 | backgroundColor: Colors.black26,///背景颜色 49 | fit: false,///是否缩放图片以保持一致 50 | controller: captureController,///用以获取截图的controller 51 | ), 52 | ``` 53 | 另外，这个widget已经包裹了一层RepaintBoundary，所以你可以通过传入一个CaptureController的实例，并调用capture()方法获取截图。 54 | ``` dart 55 | ///获取截图 56 | getCapture() async{ 57 | Uint8List bytes = await captureController.capture(); 58 | } 59 | ``` 60 | ## LICENSE 61 | MIT License -------------------------------------------------------------------------------- /example/lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/material.dart'; 2 | 3 | import 'helper_page.dart'; 4 | import 'widget_page.dart'; 5 | 6 | const networkImagePath = "https://pic.dbw.cn/003/013/364/00301336495_44db9bad.jpg"; 7 | 8 | void main() => runApp(MyApp()); 9 | 10 | class MyApp extends StatelessWidget { 11 | @override 12 | Widget build(BuildContext context) { 13 | return MaterialApp( 14 | title: 'Flutter Demo', 15 | theme: ThemeData( 16 | primarySwatch: Colors.blue, 17 | ), 18 | home: MyHomePage(title: 'Example Home Page'), 19 | ); 20 | } 21 | } 22 | 23 | class MyHomePage extends StatefulWidget { 24 | MyHomePage({Key? key, this.title}) : super(key: key); 25 | 26 | final String? title; 27 | 28 | @override 29 | _MyHomePageState createState() => _MyHomePageState(); 30 | } 31 | 32 | class _MyHomePageState extends State { 33 | @override 34 | Widget build(BuildContext context) { 35 | return Scaffold( 36 | appBar: AppBar( 37 | title: Text(widget.title!), 38 | ), 39 | body: Center( 40 | child: Column( 41 | mainAxisAlignment: MainAxisAlignment.center, 42 | children: [ 43 | ElevatedButton( 44 | onPressed: _toWidget, 45 | child: Text( 46 | "ImagesMerge Widget", 47 | style: Theme.of(context).textTheme.headline6, 48 | )), 49 | SizedBox( 50 | height: 30, 51 | ), 52 | ElevatedButton( 53 | onPressed: _toHelper, 54 | child: Text( 55 | "ImagesMerge Helper", 56 | style: Theme.of(context).textTheme.headline6, 57 | )), 58 | ], 59 | ), 60 | ), 61 | ); 62 | } 63 | 64 | _toWidget() { 65 | Navigator.push(context, 66 | MaterialPageRoute(builder: (context) => ImagesMergeWidgetPage())); 67 | } 68 | 69 | _toHelper() { 70 | Navigator.push(context, 71 | MaterialPageRoute(builder: (context) => ImagesMergeHelperPage())); 72 | } 73 | } 74 | -------------------------------------------------------------------------------- /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 28 30 | 31 | sourceSets { 32 | main.java.srcDirs += 'src/main/kotlin' 33 | } 34 | 35 | lintOptions { 36 | disable 'InvalidPackage' 37 | } 38 | 39 | defaultConfig { 40 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 41 | applicationId "example.example" 42 | minSdkVersion 16 43 | targetSdkVersion 28 44 | versionCode flutterVersionCode.toInteger() 45 | versionName flutterVersionName 46 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 47 | } 48 | 49 | buildTypes { 50 | release { 51 | // TODO: Add your own signing config for the release build. 52 | // Signing with the debug keys for now, so `flutter run --release` works. 53 | signingConfig signingConfigs.debug 54 | } 55 | } 56 | } 57 | 58 | flutter { 59 | source '../..' 60 | } 61 | 62 | dependencies { 63 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 64 | testImplementation 'junit:junit:4.12' 65 | androidTestImplementation 'androidx.test:runner:1.1.1' 66 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' 67 | } 68 | -------------------------------------------------------------------------------- /lib/src/merge_painter.dart: -------------------------------------------------------------------------------- 1 | part of "images_merge.dart"; 2 | 3 | /// 4 | ///@author xiaozhizhong 5 | ///@date 2020/4/1 6 | ///@description painter 7 | /// 8 | class _MergePainter extends CustomPainter { 9 | _MergePainter(this.imageList, this.direction, this.fit, this.scale); 10 | 11 | final List imageList; 12 | final Axis direction; 13 | final bool fit; 14 | final double scale; 15 | 16 | @override 17 | void paint(Canvas canvas, Size size) { 18 | double dx = 0; 19 | double dy = 0; 20 | double totalWidth = size.width; 21 | double totalHeight = size.height; 22 | Paint paint = Paint(); 23 | imageList.forEach((image) { 24 | //scale the image to same width/height 25 | late double imageHeight; 26 | late double imageWidth; 27 | double dxScale = dx; 28 | double dyScale = dy; 29 | if (direction == Axis.vertical) { 30 | if (image.width < totalWidth && !fit) { 31 | canvas.drawImage(image, Offset(dx, dy), paint); 32 | } else { 33 | canvas.save(); 34 | if (!fit) { 35 | imageHeight = image.height * scale; 36 | canvas.scale(imageHeight / image.height); 37 | } else { 38 | canvas.scale(totalWidth / image.width); 39 | imageHeight = image.height * totalWidth / image.width; 40 | } 41 | 42 | dyScale *= image.height / imageHeight; 43 | canvas.drawImage(image, Offset(dxScale, dyScale), paint); 44 | canvas.restore(); 45 | } 46 | } else { 47 | if (image.height < totalHeight && !fit) { 48 | canvas.drawImage(image, Offset(dx, dy), paint); 49 | } else { 50 | canvas.save(); 51 | if (!fit) { 52 | imageWidth = image.width * scale; 53 | canvas.scale(imageWidth / image.width); 54 | } else { 55 | canvas.scale(totalHeight / image.height); 56 | imageWidth = image.width * totalHeight / image.height; 57 | } 58 | dxScale *= image.width / imageWidth; 59 | canvas.drawImage(image, Offset(dxScale, dyScale), paint); 60 | canvas.restore(); 61 | } 62 | } 63 | if (direction == Axis.vertical) { 64 | dy += imageHeight; 65 | } else { 66 | dx += imageWidth; 67 | } 68 | }); 69 | } 70 | 71 | @override 72 | bool shouldRepaint(CustomPainter oldDelegate) { 73 | return oldDelegate != this; 74 | } 75 | } 76 | -------------------------------------------------------------------------------- /example/ios/Runner/Base.lproj/LaunchScreen.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 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # merge_images in flutter 2 | 3 | 4 | 5 | [中文文档](README(CH).md) 6 | 7 | ## Intro 8 | Merge images (Image stitching) in vertical or horizontal direction. 9 | ![Preview](example/preview/preview1.png) 10 | 11 | ## Features 12 | * Support vertical and horizontal direction. 13 | * Provide a helper to merge images in code and get a result image, and a widget to automatically merge and show images. 14 | * Automatically scale the image to fit other images (fit width in vertical, and height in horizontal). 15 | 16 | ## Usage 17 | #### ImagesMergeHelper 18 | Use this helper to merge images in code. 19 | 20 | ``` dart 21 | ui.Image image = await ImagesMergeHelper.margeImages( 22 | [assetImage1,assetImage2,providerImage],///required,images list 23 | fit: true,///scale image to fit others 24 | direction: Axis.vertical,///direction of images 25 | backgroundColor: Colors.black26);///background color 26 | ``` 27 | Besides, it provider some functions to do image format conversion: 28 | ``` dart 29 | ///ui.Image to Uint8List 30 | Uint8List bytes = await ImagesMergeHelper.imageToUint8List(image); 31 | ///ui.Image to File 32 | File file = await ImagesMergeHelper.imageToFile(image); 33 | ///Uint8List to ui.Image 34 | ui.Image image = await ImagesMergeHelper.uint8ListToImage(imageBytes); 35 | ///file to ui.Image 36 | ui.Image image = await ImagesMergeHelper.loadImageFromFile(file); 37 | ///asset to ui.Image 38 | ui.Image image = await ImagesMergeHelper.loadImageFromAsset(assetPath); 39 | ///ImageProvider to ui.Image 40 | ui.Image image = await ImagesMergeHelper.loadImageFromProvider(imageProvider); 41 | 42 | ``` 43 | #### ImageMerge 44 | Use this widget to automatically merge and show images. 45 | ``` dart 46 | ImagesMerge( 47 | imageList,///required,images list 48 | direction: Axis.vertical,///direction 49 | backgroundColor: Colors.black26,///background color 50 | fit: false,///scale image to fit others 51 | controller: captureController,///controller to get screen shot 52 | ), 53 | ``` 54 | Besides, the widget was wrapped with RepaintBoundary, you can simply passing an instance of CaptureController and get the screen shot by calling capture(). 55 | ``` dart 56 | ///get capture of widget by RepaintBoundary 57 | getCapture() async{ 58 | Uint8List bytes = await captureController.capture(); 59 | } 60 | ``` 61 | ## LICENSE 62 | MIT License 63 | 64 | -------------------------------------------------------------------------------- /example/pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: example 2 | description: merge images example application. 3 | 4 | # The following defines the version and build number for your application. 5 | # A version number is three numbers separated by dots, like 1.2.43 6 | # followed by an optional build number separated by a +. 7 | # Both the version and the builder number may be overridden in flutter 8 | # build by specifying --build-name and --build-number, respectively. 9 | # In Android, build-name is used as versionName while build-number used as versionCode. 10 | # Read more about Android versioning at https://developer.android.com/studio/publish/versioning 11 | # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. 12 | # Read more about iOS versioning at 13 | # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html 14 | version: 1.0.2 15 | 16 | environment: 17 | sdk: '>=2.12.0 <3.0.0' 18 | 19 | dependencies: 20 | flutter: 21 | sdk: flutter 22 | merge_images: 23 | path: ../ 24 | 25 | 26 | # The following adds the Cupertino Icons font to your application. 27 | # Use with the CupertinoIcons class for iOS style icons. 28 | cupertino_icons: ^0.1.2 29 | 30 | dev_dependencies: 31 | flutter_test: 32 | sdk: flutter 33 | 34 | 35 | # For information on the generic Dart part of this file, see the 36 | # following page: https://dart.dev/tools/pub/pubspec 37 | 38 | # The following section is specific to Flutter. 39 | flutter: 40 | 41 | # The following line ensures that the Material Icons font is 42 | # included with your application, so that you can use the icons in 43 | # the material Icons class. 44 | uses-material-design: true 45 | 46 | # To add assets to your application, add an assets section, like this: 47 | assets: 48 | - sunset.jpeg 49 | - bridge.jpg 50 | # - images/a_dot_ham.jpeg 51 | 52 | # An image asset can refer to one or more resolution-specific "variants", see 53 | # https://flutter.dev/assets-and-images/#resolution-aware. 54 | 55 | # For details regarding adding assets from package dependencies, see 56 | # https://flutter.dev/assets-and-images/#from-packages 57 | 58 | # To add custom fonts to your application, add a fonts section here, 59 | # in this "flutter" section. Each entry in this list should have a 60 | # "family" key with the font family name, and a "fonts" key with a 61 | # list giving the asset and other descriptors for the font. For 62 | # example: 63 | # fonts: 64 | # - family: Schyler 65 | # fonts: 66 | # - asset: fonts/Schyler-Regular.ttf 67 | # - asset: fonts/Schyler-Italic.ttf 68 | # style: italic 69 | # - family: Trajan Pro 70 | # fonts: 71 | # - asset: fonts/TrajanPro.ttf 72 | # - asset: fonts/TrajanPro_Bold.ttf 73 | # weight: 700 74 | # 75 | # For details regarding fonts from package dependencies, 76 | # see https://flutter.dev/custom-fonts/#from-packages 77 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "size" : "20x20", 5 | "idiom" : "iphone", 6 | "filename" : "Icon-App-20x20@2x.png", 7 | "scale" : "2x" 8 | }, 9 | { 10 | "size" : "20x20", 11 | "idiom" : "iphone", 12 | "filename" : "Icon-App-20x20@3x.png", 13 | "scale" : "3x" 14 | }, 15 | { 16 | "size" : "29x29", 17 | "idiom" : "iphone", 18 | "filename" : "Icon-App-29x29@1x.png", 19 | "scale" : "1x" 20 | }, 21 | { 22 | "size" : "29x29", 23 | "idiom" : "iphone", 24 | "filename" : "Icon-App-29x29@2x.png", 25 | "scale" : "2x" 26 | }, 27 | { 28 | "size" : "29x29", 29 | "idiom" : "iphone", 30 | "filename" : "Icon-App-29x29@3x.png", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "size" : "40x40", 35 | "idiom" : "iphone", 36 | "filename" : "Icon-App-40x40@2x.png", 37 | "scale" : "2x" 38 | }, 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.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/Podfile: -------------------------------------------------------------------------------- 1 | # Uncomment this line to define a global platform for your project 2 | # platform :ios, '9.0' 3 | 4 | # CocoaPods analytics sends network stats synchronously affecting flutter build latency. 5 | ENV['COCOAPODS_DISABLE_STATS'] = 'true' 6 | 7 | project 'Runner', { 8 | 'Debug' => :debug, 9 | 'Profile' => :release, 10 | 'Release' => :release, 11 | } 12 | 13 | def parse_KV_file(file, separator='=') 14 | file_abs_path = File.expand_path(file) 15 | if !File.exists? file_abs_path 16 | return []; 17 | end 18 | generated_key_values = {} 19 | skip_line_start_symbols = ["#", "/"] 20 | File.foreach(file_abs_path) do |line| 21 | next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ } 22 | plugin = line.split(pattern=separator) 23 | if plugin.length == 2 24 | podname = plugin[0].strip() 25 | path = plugin[1].strip() 26 | podpath = File.expand_path("#{path}", file_abs_path) 27 | generated_key_values[podname] = podpath 28 | else 29 | puts "Invalid plugin specification: #{line}" 30 | end 31 | end 32 | generated_key_values 33 | end 34 | 35 | target 'Runner' do 36 | use_frameworks! 37 | use_modular_headers! 38 | 39 | # Flutter Pod 40 | 41 | copied_flutter_dir = File.join(__dir__, 'Flutter') 42 | copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework') 43 | copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec') 44 | unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path) 45 | # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet. 46 | # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration. 47 | # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist. 48 | 49 | generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig') 50 | unless File.exist?(generated_xcode_build_settings_path) 51 | raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first" 52 | end 53 | generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path) 54 | cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR']; 55 | 56 | unless File.exist?(copied_framework_path) 57 | FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir) 58 | end 59 | unless File.exist?(copied_podspec_path) 60 | FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir) 61 | end 62 | end 63 | 64 | # Keep pod path relative so it can be checked into Podfile.lock. 65 | pod 'Flutter', :path => 'Flutter' 66 | 67 | # Plugin Pods 68 | 69 | # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock 70 | # referring to absolute paths on developers' machines. 71 | system('rm -rf .symlinks') 72 | system('mkdir -p .symlinks/plugins') 73 | plugin_pods = parse_KV_file('../.flutter-plugins') 74 | plugin_pods.each do |name, path| 75 | symlink = File.join('.symlinks', 'plugins', name) 76 | File.symlink(path, symlink) 77 | pod name, :path => File.join(symlink, 'ios') 78 | end 79 | end 80 | 81 | # Prevent Cocoapods from embedding a second Flutter framework and causing an error with the new Xcode build system. 82 | install! 'cocoapods', :disable_input_output_paths => true 83 | 84 | post_install do |installer| 85 | installer.pods_project.targets.each do |target| 86 | target.build_configurations.each do |config| 87 | config.build_settings['ENABLE_BITCODE'] = 'NO' 88 | end 89 | end 90 | end 91 | -------------------------------------------------------------------------------- /example/lib/helper_page.dart: -------------------------------------------------------------------------------- 1 | import 'dart:typed_data'; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'dart:ui' as ui; 5 | 6 | import 'package:merge_images/merge_images.dart'; 7 | 8 | import 'image_preview_page.dart'; 9 | import 'main.dart'; 10 | 11 | /// 12 | ///@author xiaozhizhong 13 | ///@date 2020/4/2 14 | ///@description images merge helper example page 15 | /// 16 | class ImagesMergeHelperPage extends StatefulWidget { 17 | @override 18 | _ImagesMergeHelperPageState createState() => _ImagesMergeHelperPageState(); 19 | } 20 | 21 | class _ImagesMergeHelperPageState extends State { 22 | ui.Image? assetImage1; 23 | ui.Image? assetImage2; 24 | ui.Image? providerImage; 25 | 26 | 27 | @override 28 | void initState() { 29 | super.initState(); 30 | loadImage(); 31 | } 32 | 33 | loadImage() async { 34 | assetImage1 = await ImagesMergeHelper.loadImageFromAsset("assets/sunset.jpeg"); 35 | assetImage2 = await ImagesMergeHelper.loadImageFromAsset("assets/bridge.jpg"); 36 | providerImage = await ImagesMergeHelper.loadImageFromProvider(NetworkImage(networkImagePath)); 37 | } 38 | 39 | @override 40 | Widget build(BuildContext context) { 41 | return Scaffold( 42 | appBar: AppBar( 43 | title: Text("Helper Page"), 44 | ), 45 | body: Container( 46 | width: double.infinity, 47 | height: double.infinity, 48 | padding: EdgeInsets.all(30), 49 | child: SingleChildScrollView( 50 | child: Column( 51 | crossAxisAlignment: CrossAxisAlignment.start, 52 | children: [ 53 | Image.asset( 54 | "assets/sunset.jpeg", 55 | scale: 10, 56 | fit: BoxFit.scaleDown, 57 | ), 58 | SizedBox( 59 | height: 10, 60 | ), 61 | Image.asset( 62 | "assets/bridge.jpg", 63 | scale: 10, 64 | fit: BoxFit.scaleDown, 65 | ), 66 | SizedBox( 67 | height: 10, 68 | ), 69 | Image.network( 70 | networkImagePath, 71 | scale: 10, 72 | fit: BoxFit.scaleDown, 73 | ), 74 | SizedBox( 75 | height: 30, 76 | ), 77 | ElevatedButton( 78 | onPressed: () => _merge(fit: true, direction: Axis.vertical), 79 | child: Text( 80 | "vertical & fit", 81 | style: Theme.of(context).textTheme.headline6, 82 | )), 83 | ElevatedButton( 84 | onPressed: () => _merge(fit: false, direction: Axis.vertical), 85 | child: Text( 86 | "vertical", 87 | style: Theme.of(context).textTheme.headline6, 88 | )), 89 | ElevatedButton( 90 | onPressed: () => _merge(fit: true, direction: Axis.horizontal), 91 | child: Text( 92 | "horizontal & fit", 93 | style: Theme.of(context).textTheme.headline6, 94 | )), 95 | ElevatedButton( 96 | onPressed: () => _merge(fit: false, direction: Axis.horizontal), 97 | child: Text( 98 | "horizontal", 99 | style: Theme.of(context).textTheme.headline6, 100 | )), 101 | ], 102 | ), 103 | ), 104 | ), 105 | ); 106 | } 107 | 108 | ///merge images using ImagesMergeHelper and preview 109 | _merge({required bool fit, required Axis direction}) async { 110 | ui.Image image = await ImagesMergeHelper.margeImages([assetImage1!, assetImage2!, providerImage!], 111 | fit: fit, direction: direction, backgroundColor: Colors.black26); 112 | Uint8List? bytes = await ImagesMergeHelper.imageToUint8List(image); 113 | if (bytes == null) return; 114 | Navigator.push(context, MaterialPageRoute(builder: (context) => Preview(bytes))); 115 | } 116 | } 117 | -------------------------------------------------------------------------------- /lib/src/images_merge.dart: -------------------------------------------------------------------------------- 1 | import 'dart:typed_data'; 2 | import 'package:flutter/material.dart'; 3 | import 'dart:ui' as ui; 4 | import 'package:flutter/rendering.dart'; 5 | 6 | part "merge_painter.dart"; 7 | 8 | /// 9 | ///@author xiaozhizhong 10 | ///@date 2020/4/1 11 | ///@description images merge widget 12 | /// 13 | // ignore: must_be_immutable 14 | class ImagesMerge extends StatelessWidget { 15 | ImagesMerge(this.imageList, 16 | {this.direction = Axis.vertical, 17 | this.controller, 18 | this.fit = true, 19 | this.backgroundColor}); 20 | 21 | ///List of images list, content must be ui.Image. 22 | ///If you have another format of image, you can transfer it to ui.Image 23 | ///by [ImagesMergeHelper]. 24 | final List imageList; 25 | 26 | ///Merge direction, default to vertical. 27 | final Axis direction; 28 | 29 | ///Whether to Scale the pictures to same width/height when pictures has 30 | ///different width/height, 31 | ///Fit width when direction is vertical, and fit height when horizontal. 32 | ///Default to true. 33 | final bool fit; 34 | 35 | ///background color 36 | final Color? backgroundColor; 37 | 38 | ///Controller to capture screen. 39 | final CaptureController? controller; 40 | 41 | int totalWidth = 0; 42 | int totalHeight = 0; 43 | 44 | double scale = 1; 45 | 46 | @override 47 | Widget build(BuildContext context) { 48 | return LayoutBuilder( 49 | builder: (context, constraint) { 50 | _calculate(constraint); 51 | return RepaintBoundary( 52 | key: controller?.key ?? ValueKey(0), 53 | child: ClipRRect( 54 | child: Container( 55 | color: backgroundColor, 56 | child: CustomPaint( 57 | painter: _MergePainter(imageList, direction, fit, scale), 58 | size: Size(totalWidth.toDouble(), totalHeight.toDouble()), 59 | ), 60 | ), 61 | ), 62 | ); 63 | }, 64 | ); 65 | } 66 | 67 | ///calculating width and height of canvas 68 | _calculate(BoxConstraints constraint) { 69 | //calculate the max width/height of images 70 | imageList.forEach((image) { 71 | if (direction == Axis.vertical) { 72 | if (totalWidth < image.width) totalWidth = image.width; 73 | } else { 74 | if (totalHeight < image.height) totalHeight = image.height; 75 | } 76 | }); 77 | //calculate the constraint of parent 78 | if (direction == Axis.vertical && 79 | constraint.hasBoundedWidth && 80 | totalWidth > constraint.maxWidth) { 81 | scale = constraint.maxWidth / totalWidth; 82 | totalWidth = constraint.maxWidth.floor(); 83 | } else if (direction == Axis.horizontal && 84 | constraint.hasBoundedHeight && 85 | totalHeight > constraint.maxHeight) { 86 | scale = constraint.maxHeight / totalHeight; 87 | totalHeight = constraint.maxHeight.floor(); 88 | } 89 | //calculate the opposite 90 | imageList.forEach((image) { 91 | if (direction == Axis.vertical) { 92 | if (image.width < totalWidth && !fit) { 93 | totalHeight += image.height; 94 | } else { 95 | if (!fit) 96 | totalHeight += (image.height * scale).floor(); 97 | else 98 | totalHeight += (image.height * totalWidth / image.width).floor(); 99 | } 100 | } else { 101 | if (image.height < totalHeight && !fit) { 102 | totalWidth += image.width; 103 | } else { 104 | if (!fit) 105 | totalWidth += (image.width * scale).floor(); 106 | else 107 | totalWidth += (image.width * totalHeight / image.height).floor(); 108 | } 109 | } 110 | }); 111 | } 112 | } 113 | 114 | /// Screen shot capture controller 115 | class CaptureController { 116 | CaptureController(); 117 | 118 | final GlobalKey key = GlobalKey(); 119 | 120 | ///capture the screen shot by RepaintBoundary 121 | Future capture() async { 122 | try { 123 | RenderRepaintBoundary boundary = 124 | key.currentContext!.findRenderObject() as RenderRepaintBoundary; 125 | double dpr = ui.window.devicePixelRatio; 126 | ui.Image image = await boundary.toImage(pixelRatio: dpr); 127 | ByteData? byteData = await image.toByteData(format: ui.ImageByteFormat.png); 128 | Uint8List? pngBytes = byteData?.buffer.asUint8List(); 129 | return pngBytes; 130 | } catch (e) { 131 | print(e); 132 | } 133 | return null; 134 | } 135 | } 136 | -------------------------------------------------------------------------------- /example/lib/widget_page.dart: -------------------------------------------------------------------------------- 1 | import 'dart:typed_data'; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:merge_images/merge_images.dart'; 5 | import 'dart:ui' as ui; 6 | 7 | import 'image_preview_page.dart'; 8 | import 'main.dart'; 9 | 10 | /// 11 | ///@author xiaozhizhong 12 | ///@date 2020/4/2 13 | ///@description images merge widget example page 14 | /// 15 | class ImagesMergeWidgetPage extends StatefulWidget { 16 | @override 17 | _ImagesMergeWidgetPageState createState() => _ImagesMergeWidgetPageState(); 18 | } 19 | 20 | class _ImagesMergeWidgetPageState extends State { 21 | var imageList = []; 22 | late ui.Image assetImage1; 23 | late ui.Image assetImage2; 24 | late ui.Image providerImage; 25 | 26 | final captureController = CaptureController(); 27 | 28 | @override 29 | void initState() { 30 | super.initState(); 31 | loadImage(); 32 | } 33 | 34 | loadImage() async { 35 | assetImage1 = await ImagesMergeHelper.loadImageFromAsset("assets/sunset.jpeg"); 36 | assetImage2 = await ImagesMergeHelper.loadImageFromAsset("assets/bridge.jpg"); 37 | providerImage = await ImagesMergeHelper.loadImageFromProvider(NetworkImage(networkImagePath)); 38 | setState(() { 39 | imageList.add(assetImage1); 40 | imageList.add(assetImage2); 41 | imageList.add(providerImage); 42 | }); 43 | } 44 | 45 | @override 46 | Widget build(BuildContext context) { 47 | return Scaffold( 48 | appBar: AppBar( 49 | title: Text("Widget Page"), 50 | ), 51 | body: Container( 52 | width: double.infinity, 53 | height: double.infinity, 54 | padding: EdgeInsets.all(30), 55 | child: SingleChildScrollView( 56 | child: Column( 57 | crossAxisAlignment: CrossAxisAlignment.start, 58 | children: [ 59 | Image.asset( 60 | "assets/sunset.jpeg", 61 | scale: 10, 62 | fit: BoxFit.scaleDown, 63 | ), 64 | SizedBox( 65 | height: 10, 66 | ), 67 | Image.asset( 68 | "assets/bridge.jpg", 69 | scale: 10, 70 | fit: BoxFit.scaleDown, 71 | ), 72 | SizedBox( 73 | height: 10, 74 | ), 75 | Image.network( 76 | networkImagePath, 77 | scale: 10, 78 | fit: BoxFit.scaleDown, 79 | ), 80 | Padding( 81 | padding: const EdgeInsets.only(top: 20), 82 | child: Text("merge(vertical&fit)"), 83 | ), 84 | Offstage( 85 | offstage: imageList.isEmpty, 86 | child: Container( 87 | width: 100, 88 | child: ImagesMerge( 89 | imageList, 90 | direction: Axis.vertical, 91 | fit: true, 92 | ), 93 | ), 94 | ), 95 | Padding( 96 | padding: const EdgeInsets.only(top: 20), 97 | child: Text("merge(vertical)"), 98 | ), 99 | Offstage( 100 | offstage: imageList.isEmpty, 101 | child: Container( 102 | width: 100, 103 | child: ImagesMerge( 104 | imageList, 105 | direction: Axis.vertical, 106 | backgroundColor: Colors.black26, 107 | fit: false, 108 | ), 109 | ), 110 | ), 111 | Padding( 112 | padding: const EdgeInsets.only(top: 20), 113 | child: Text("merge(horizontal&fit)"), 114 | ), 115 | Offstage( 116 | offstage: imageList.isEmpty, 117 | child: Container( 118 | height: 70, 119 | child: ImagesMerge( 120 | imageList, 121 | direction: Axis.horizontal, 122 | fit: true, 123 | ), 124 | ), 125 | ), 126 | Padding( 127 | padding: const EdgeInsets.only(top: 20), 128 | child: Text("merge(horizontal)"), 129 | ), 130 | Offstage( 131 | offstage: imageList.isEmpty, 132 | child: Container( 133 | height: 70, 134 | child: ImagesMerge( 135 | imageList, 136 | direction: Axis.horizontal, 137 | fit: false, 138 | backgroundColor: Colors.black26, 139 | controller: captureController, 140 | ), 141 | ), 142 | ), 143 | ElevatedButton( 144 | onPressed: () => getCapture(context), child: Text("Capture", style: Theme.of(context).textTheme.headline6)) 145 | ], 146 | ), 147 | ), 148 | ), 149 | ); 150 | } 151 | 152 | ///get capture of widget by RepaintBoundary 153 | getCapture(context) async { 154 | Uint8List? bytes = await captureController.capture(); 155 | if (bytes == null) return; 156 | Navigator.push(context, MaterialPageRoute(builder: (context) => Preview(bytes))); 157 | } 158 | } 159 | -------------------------------------------------------------------------------- /lib/src/images_merge_helper.dart: -------------------------------------------------------------------------------- 1 | import 'dart:async'; 2 | import 'dart:io'; 3 | import 'dart:typed_data'; 4 | 5 | import 'package:flutter/material.dart'; 6 | import 'dart:ui' as ui; 7 | 8 | import 'package:flutter/services.dart'; 9 | import 'package:path_provider/path_provider.dart'; 10 | 11 | /// 12 | ///@author xiaozhizhong 13 | ///@date 2020/4/1 14 | ///@description images merge helper 15 | /// 16 | 17 | class ImagesMergeHelper { 18 | ///Merge images from a list of ui.Image 19 | ///[imageList] list of ui.Image 20 | ///[direction] merge direction, default to vertical 21 | ///[fit] Whether to Scale the pictures to same width/height when pictures has 22 | ///different width/height, 23 | /// Fit width when direction is vertical, and fit height when horizontal. 24 | /// Default to true. 25 | ///[backgroundColor] background color of picture 26 | static Future margeImages(List imageList, 27 | {Axis direction = Axis.vertical, bool fit = true, Color? backgroundColor}) { 28 | int maxWidth = 0; 29 | int maxHeight = 0; 30 | //calculate max width/height of image 31 | imageList.forEach((image) { 32 | if (direction == Axis.vertical) { 33 | if (maxWidth < image.width) maxWidth = image.width; 34 | } else { 35 | if (maxHeight < image.height) maxHeight = image.height; 36 | } 37 | }); 38 | int totalHeight = maxHeight; 39 | int totalWidth = maxWidth; 40 | ui.PictureRecorder recorder = ui.PictureRecorder(); 41 | final paint = Paint(); 42 | Canvas canvas = Canvas(recorder); 43 | double dx = 0; 44 | double dy = 0; 45 | //set background color 46 | if (backgroundColor != null) canvas.drawColor(backgroundColor, BlendMode.srcOver); 47 | //draw images into canvas 48 | imageList.forEach((image) { 49 | double scaleDx = dx; 50 | double scaleDy = dy; 51 | double imageHeight = image.height.toDouble(); 52 | double imageWidth = image.width.toDouble(); 53 | if (fit) { 54 | //scale the image to same width/height 55 | canvas.save(); 56 | if (direction == Axis.vertical && image.width != maxWidth) { 57 | canvas.scale(maxWidth / image.width); 58 | scaleDy *= imageWidth / maxWidth; 59 | imageHeight *= maxWidth / imageWidth; 60 | } else if (direction == Axis.horizontal && image.height != maxHeight) { 61 | canvas.scale(maxHeight / image.height); 62 | scaleDx *= imageHeight / maxHeight; 63 | imageWidth *= maxHeight / imageHeight; 64 | } 65 | canvas.drawImage(image, Offset(scaleDx, scaleDy), paint); 66 | canvas.restore(); 67 | } else { 68 | //draw directly 69 | canvas.drawImage(image, Offset(dx, dy), paint); 70 | } 71 | //accumulate dx/dy 72 | if (direction == Axis.vertical) { 73 | dy += imageHeight; 74 | totalHeight += imageHeight.floor(); 75 | } else { 76 | dx += imageWidth; 77 | totalWidth += imageWidth.floor(); 78 | } 79 | }); 80 | //output image 81 | return recorder.endRecording().toImage(totalWidth, totalHeight); 82 | } 83 | 84 | ///transfer ui.Image to Unit8List 85 | ///[image] 86 | ///[format] default to png 87 | static Future imageToUint8List(ui.Image image, {ui.ImageByteFormat format = ui.ImageByteFormat.png}) async { 88 | ByteData? byteData = await image.toByteData(format: format); 89 | return byteData?.buffer.asUint8List(); 90 | } 91 | 92 | ///transfer ui.Image to File 93 | ///[image] 94 | ///[path] path to store temporary file, will use [ getTemporaryDirectory ] 95 | ///by path_provider if null 96 | static Future imageToFile(ui.Image image, {String? path}) async { 97 | Uint8List? byte = await imageToUint8List(image); 98 | if(byte==null) return null; 99 | final directory = path ?? (await getTemporaryDirectory()).path; 100 | String fileName = DateTime.now().toIso8601String(); 101 | String fullPath = '$directory/$fileName.png'; 102 | File imgFile = new File(fullPath); 103 | return await imgFile.writeAsBytes(byte); 104 | } 105 | 106 | ///transfer Unit8List to ui.Image 107 | ///[bytes] Uint8List bytes 108 | static Future uint8ListToImage(Uint8List bytes) async { 109 | ImageProvider provider = MemoryImage(bytes); 110 | return await loadImageFromProvider(provider); 111 | } 112 | 113 | ///load ui.Image from File 114 | ///[file] Image file 115 | static Future loadImageFromFile(File file) async { 116 | Uint8List bytes = file.readAsBytesSync(); 117 | return await uint8ListToImage(bytes); 118 | } 119 | 120 | ///load ui.Image from asset 121 | ///[asset] asset path 122 | static Future loadImageFromAsset(String asset) async { 123 | ByteData data = await rootBundle.load(asset); 124 | var codec = await ui.instantiateImageCodec(data.buffer.asUint8List()); 125 | ui.FrameInfo fi = await codec.getNextFrame(); 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