Add asset transformation sample

asset_transformation/.gitignore

@@ -0,0 +1,43 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

asset_transformation/.metadata

@@ -0,0 +1,45 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+ revision: "db8c475cac117074a38ad50da810214cd7af0d46"
+ channel: "master"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+ platforms:
+ - platform: root
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: android
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: ios
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: linux
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: macos
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: web
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ - platform: windows
+ create_revision: db8c475cac117074a38ad50da810214cd7af0d46
+ base_revision: db8c475cac117074a38ad50da810214cd7af0d46
+
+ # User provided section
+
+ # List of Local paths (relative to this file) that should be
+ # ignored by the migrate tool.
+ #
+ # Files that are not part of the templates will be ignored by default.
+ unmanaged_files:
+ - 'lib/main.dart'
+ - 'ios/Runner.xcodeproj/project.pbxproj'

asset_transformation/README.md

@@ -0,0 +1,8 @@
+# asset_transformation
+
+This project demonstrates the asset transformation feature. It includes an example
+of a custom Dart package that can be used as an asset transformer. It also shows
+how to transform an asset using a pub package that is compatible with the asset
+transformation feature.
+
+See the `assets` section in pubspec.yaml to get started.

asset_transformation/analysis_options.yaml

@@ -0,0 +1 @@
+include: package:flutter_lints/flutter.yaml

asset_transformation/android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

asset_transformation/android/app/build.gradle

@@ -0,0 +1,40 @@
+plugins {
+ id "com.android.application"
+ id "kotlin-android"
+ // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+ id "dev.flutter.flutter-gradle-plugin"
+}
+
+android {
+ namespace = "com.example.asset_transformation"
+ compileSdk = flutter.compileSdkVersion
+ ndkVersion = flutter.ndkVersion
+
+ compileOptions {
+ sourceCompatibility = JavaVersion.VERSION_1_8
+ targetCompatibility = JavaVersion.VERSION_1_8
+ }
+
+ defaultConfig {
+ // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+ applicationId = "com.example.asset_transformation"
+ // You can update the following values to match your application needs.
+ // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+ minSdk = flutter.minSdkVersion
+ targetSdk = flutter.targetSdkVersion
+ versionCode = flutter.versionCode
+ versionName = flutter.versionName
+ }
+
+ buildTypes {
+ release {
+ // TODO: Add your own signing config for the release build.
+ // Signing with the debug keys for now, so `flutter run --release` works.
+ signingConfig = signingConfigs.debug
+ }
+ }
+}
+
+flutter {
+ source = "../.."
+}

asset_transformation/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+ <!-- The INTERNET permission is required for development. Specifically,
+ the Flutter tool needs it to communicate with the running application
+ to allow setting breakpoints, to provide hot reload, etc.
+ -->
+ <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

asset_transformation/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,45 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+ <application
+ android:label="asset_transformation"
+ android:name="${applicationName}"
+ android:icon="@mipmap/ic_launcher">
+ <activity
+ android:name=".MainActivity"
+ android:exported="true"
+ android:launchMode="singleTop"
+ android:taskAffinity=""
+ android:theme="@style/LaunchTheme"
+ android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+ android:hardwareAccelerated="true"
+ android:windowSoftInputMode="adjustResize">
+ <!-- Specifies an Android theme to apply to this Activity as soon as
+ the Android process has started. This theme is visible to the user
+ while the Flutter UI initializes. After that, this theme continues
+ to determine the Window background behind the Flutter UI. -->
+ <meta-data
+ android:name="io.flutter.embedding.android.NormalTheme"
+ android:resource="@style/NormalTheme"
+ />
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN"/>
+ <category android:name="android.intent.category.LAUNCHER"/>
+ </intent-filter>
+ </activity>
+ <!-- Don't delete the meta-data below.
+ This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+ <meta-data
+ android:name="flutterEmbedding"
+ android:value="2" />
+ </application>
+ <!-- Required to query activities that can process text, see:
+ https://developer.android.com/training/package-visibility and
+ https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+ In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+ <queries>
+ <intent>
+ <action android:name="android.intent.action.PROCESS_TEXT"/>
+ <data android:mimeType="text/plain"/>
+ </intent>
+ </queries>
+</manifest>

asset_transformation/android/app/src/main/kotlin/com/example/asset_transformation/MainActivity.kt

@@ -0,0 +1,5 @@
+package com.example.asset_transformation
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity()

asset_transformation/android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+ <item android:drawable="?android:colorBackground" />
+
+ <!-- You can insert your own image assets here -->
+ <!-- <item>
+ <bitmap
+ android:gravity="center"
+ android:src="@mipmap/launch_image" />
+ </item> -->
+</layer-list>

asset_transformation/android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+ <item android:drawable="@android:color/white" />
+
+ <!-- You can insert your own image assets here -->
+ <!-- <item>
+ <bitmap
+ android:gravity="center"
+ android:src="@mipmap/launch_image" />
+ </item> -->
+</layer-list>

asset_transformation/android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+ <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+ <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+ <!-- Show a splash screen on the activity. Automatically removed when
+ the Flutter engine draws its first frame -->
+ <item name="android:windowBackground">@drawable/launch_background</item>
+ </style>
+ <!-- Theme applied to the Android Window as soon as the process has started.
+ This theme determines the color of the Android Window while your
+ Flutter UI initializes, as well as behind your Flutter UI while its
+ running.
+
+ This Theme is only used starting with V2 of Flutter's Android embedding. -->
+ <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+ <item name="android:windowBackground">?android:colorBackground</item>
+ </style>
+</resources>

asset_transformation/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+ <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+ <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+ <!-- Show a splash screen on the activity. Automatically removed when
+ the Flutter engine draws its first frame -->
+ <item name="android:windowBackground">@drawable/launch_background</item>
+ </style>
+ <!-- Theme applied to the Android Window as soon as the process has started.
+ This theme determines the color of the Android Window while your
+ Flutter UI initializes, as well as behind your Flutter UI while its
+ running.
+
+ This Theme is only used starting with V2 of Flutter's Android embedding. -->
+ <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+ <item name="android:windowBackground">?android:colorBackground</item>
+ </style>
+</resources>

asset_transformation/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+ <!-- The INTERNET permission is required for development. Specifically,
+ the Flutter tool needs it to communicate with the running application
+ to allow setting breakpoints, to provide hot reload, etc.
+ -->
+ <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

asset_transformation/android/build.gradle

@@ -0,0 +1,18 @@
+allprojects {
+ repositories {
+ google()
+ mavenCentral()
+ }
+}
+
+rootProject.buildDir = "../build"
+subprojects {
+ project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+ project.evaluationDependsOn(":app")
+}
+
+tasks.register("clean", Delete) {
+ delete rootProject.buildDir
+}

asset_transformation/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=2G -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+android.enableJetifier=true

asset_transformation/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

asset_transformation/android/settings.gradle

@@ -0,0 +1,25 @@
+pluginManagement {
+ def flutterSdkPath = {
+ def properties = new Properties()
+ file("local.properties").withInputStream { properties.load(it) }
+ def flutterSdkPath = properties.getProperty("flutter.sdk")
+ assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+ return flutterSdkPath
+ }()
+
+ includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+ repositories {
+ google()
+ mavenCentral()
+ gradlePluginPortal()
+ }
+}
+
+plugins {
+ id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+ id "com.android.application" version "7.3.0" apply false
+ id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+}
+
+include ":app"