diff --git a/dart/freeform-gradient/.envrc b/dart/freeform-gradient/.envrc new file mode 100644 index 0000000..1d953f4 --- /dev/null +++ b/dart/freeform-gradient/.envrc @@ -0,0 +1 @@ +use nix diff --git a/dart/freeform-gradient/.gitignore b/dart/freeform-gradient/.gitignore new file mode 100644 index 0000000..ae1f183 --- /dev/null +++ b/dart/freeform-gradient/.gitignore @@ -0,0 +1,37 @@ +# Miscellaneous +*.class +*.log +*.pyc +*.swp +.DS_Store +.atom/ +.buildlog/ +.history +.svn/ + +# IntelliJ related +*.iml +*.ipr +*.iws +.idea/ + +# The .vscode folder contains launch configuration and tasks you configure in +# VS Code which you may wish to be included in version control, so this line +# is commented out by default. +#.vscode/ + +# Flutter/Dart/Pub related +**/doc/api/ +.dart_tool/ +.flutter-plugins +.flutter-plugins-dependencies +.packages +.pub-cache/ +.pub/ +/build/ + +# Web related +lib/generated_plugin_registrant.dart + +# Exceptions to above rules. +!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages diff --git a/dart/freeform-gradient/.metadata b/dart/freeform-gradient/.metadata new file mode 100644 index 0000000..361e1e4 --- /dev/null +++ b/dart/freeform-gradient/.metadata @@ -0,0 +1,10 @@ +# 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: 18cd7a3601bcffb36fdf2f679f763b5e827c2e8e + channel: beta + +project_type: app diff --git a/dart/freeform-gradient/README.md b/dart/freeform-gradient/README.md new file mode 100644 index 0000000..0125478 --- /dev/null +++ b/dart/freeform-gradient/README.md @@ -0,0 +1,25 @@ +# Flutter freeform gradient + +This is a demonstration project to show usage of Flutter with Nix. + +## Getting Started + +Enter in the `nix-shell`: + +```sh +nix-shell +``` + +After this, you can either build this project with: + +```sh +flutter build apk +``` + +Or run it: + +```sh +flutter run +``` + +If you have any issue, you can run `flutter doctor` to get a diagnostic and potential solution to fix your issues. diff --git a/dart/freeform-gradient/android/.gitignore b/dart/freeform-gradient/android/.gitignore new file mode 100644 index 0000000..bc2100d --- /dev/null +++ b/dart/freeform-gradient/android/.gitignore @@ -0,0 +1,7 @@ +gradle-wrapper.jar +/.gradle +/captures/ +/gradlew +/gradlew.bat +/local.properties +GeneratedPluginRegistrant.java diff --git a/dart/freeform-gradient/android/app/build.gradle b/dart/freeform-gradient/android/app/build.gradle new file mode 100644 index 0000000..71fe048 --- /dev/null +++ b/dart/freeform-gradient/android/app/build.gradle @@ -0,0 +1,67 @@ +def localProperties = new Properties() +def localPropertiesFile = rootProject.file('local.properties') +if (localPropertiesFile.exists()) { + localPropertiesFile.withReader('UTF-8') { reader -> + localProperties.load(reader) + } +} + +def flutterRoot = localProperties.getProperty('flutter.sdk') +if (flutterRoot == null) { + throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") +} + +def flutterVersionCode = localProperties.getProperty('flutter.versionCode') +if (flutterVersionCode == null) { + flutterVersionCode = '1' +} + +def flutterVersionName = localProperties.getProperty('flutter.versionName') +if (flutterVersionName == null) { + flutterVersionName = '1.0' +} + +apply plugin: 'com.android.application' +apply plugin: 'kotlin-android' +apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" + +android { + compileSdkVersion 28 + + sourceSets { + main.java.srcDirs += 'src/main/kotlin' + } + + lintOptions { + disable 'InvalidPackage' + } + + defaultConfig { + // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). + applicationId "com.example.hello_world" + minSdkVersion 16 + targetSdkVersion 28 + versionCode flutterVersionCode.toInteger() + versionName flutterVersionName + testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" + } + + buildTypes { + release { + // TODO: Add your own signing config for the release build. + // Signing with the debug keys for now, so `flutter run --release` works. + signingConfig signingConfigs.debug + } + } +} + +flutter { + source '../..' +} + +dependencies { + implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" + testImplementation 'junit:junit:4.12' + androidTestImplementation 'androidx.test:runner:1.1.1' + androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' +} diff --git a/dart/freeform-gradient/android/app/src/debug/AndroidManifest.xml b/dart/freeform-gradient/android/app/src/debug/AndroidManifest.xml new file mode 100644 index 0000000..9b3ab4d --- /dev/null +++ b/dart/freeform-gradient/android/app/src/debug/AndroidManifest.xml @@ -0,0 +1,7 @@ + + + + diff --git a/dart/freeform-gradient/android/app/src/main/AndroidManifest.xml b/dart/freeform-gradient/android/app/src/main/AndroidManifest.xml new file mode 100644 index 0000000..fc01d6a --- /dev/null +++ b/dart/freeform-gradient/android/app/src/main/AndroidManifest.xml @@ -0,0 +1,30 @@ + + + + + + + + + + + + + diff --git a/dart/freeform-gradient/android/app/src/main/kotlin/com/example/hello_world/MainActivity.kt b/dart/freeform-gradient/android/app/src/main/kotlin/com/example/hello_world/MainActivity.kt new file mode 100644 index 0000000..3495ced --- /dev/null +++ b/dart/freeform-gradient/android/app/src/main/kotlin/com/example/hello_world/MainActivity.kt @@ -0,0 +1,12 @@ +package com.example.hello_world + +import androidx.annotation.NonNull; +import io.flutter.embedding.android.FlutterActivity +import io.flutter.embedding.engine.FlutterEngine +import io.flutter.plugins.GeneratedPluginRegistrant + +class MainActivity: FlutterActivity() { + override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) { + GeneratedPluginRegistrant.registerWith(flutterEngine); + } +} diff --git a/dart/freeform-gradient/android/app/src/main/res/drawable/launch_background.xml b/dart/freeform-gradient/android/app/src/main/res/drawable/launch_background.xml new file mode 100644 index 0000000..304732f --- /dev/null +++ b/dart/freeform-gradient/android/app/src/main/res/drawable/launch_background.xml @@ -0,0 +1,12 @@ + + + + + + + + diff --git a/dart/freeform-gradient/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/dart/freeform-gradient/android/app/src/main/res/mipmap-hdpi/ic_launcher.png new file mode 100644 index 0000000..db77bb4 Binary files /dev/null and b/dart/freeform-gradient/android/app/src/main/res/mipmap-hdpi/ic_launcher.png differ diff --git a/dart/freeform-gradient/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/dart/freeform-gradient/android/app/src/main/res/mipmap-mdpi/ic_launcher.png new file mode 100644 index 0000000..17987b7 Binary files /dev/null and b/dart/freeform-gradient/android/app/src/main/res/mipmap-mdpi/ic_launcher.png differ diff --git a/dart/freeform-gradient/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/dart/freeform-gradient/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png new file mode 100644 index 0000000..09d4391 Binary files /dev/null and b/dart/freeform-gradient/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ diff --git a/dart/freeform-gradient/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/dart/freeform-gradient/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png new file mode 100644 index 0000000..d5f1c8d Binary files /dev/null and b/dart/freeform-gradient/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ diff --git a/dart/freeform-gradient/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/dart/freeform-gradient/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png new file mode 100644 index 0000000..4d6372e Binary files /dev/null and b/dart/freeform-gradient/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ diff --git a/dart/freeform-gradient/android/app/src/main/res/values/styles.xml b/dart/freeform-gradient/android/app/src/main/res/values/styles.xml new file mode 100644 index 0000000..00fa441 --- /dev/null +++ b/dart/freeform-gradient/android/app/src/main/res/values/styles.xml @@ -0,0 +1,8 @@ + + + + diff --git a/dart/freeform-gradient/android/app/src/profile/AndroidManifest.xml b/dart/freeform-gradient/android/app/src/profile/AndroidManifest.xml new file mode 100644 index 0000000..9b3ab4d --- /dev/null +++ b/dart/freeform-gradient/android/app/src/profile/AndroidManifest.xml @@ -0,0 +1,7 @@ + + + + diff --git a/dart/freeform-gradient/android/build.gradle b/dart/freeform-gradient/android/build.gradle new file mode 100644 index 0000000..3100ad2 --- /dev/null +++ b/dart/freeform-gradient/android/build.gradle @@ -0,0 +1,31 @@ +buildscript { + ext.kotlin_version = '1.3.50' + repositories { + google() + jcenter() + } + + dependencies { + classpath 'com.android.tools.build:gradle:3.5.0' + classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" + } +} + +allprojects { + repositories { + google() + jcenter() + } +} + +rootProject.buildDir = '../build' +subprojects { + project.buildDir = "${rootProject.buildDir}/${project.name}" +} +subprojects { + project.evaluationDependsOn(':app') +} + +task clean(type: Delete) { + delete rootProject.buildDir +} diff --git a/dart/freeform-gradient/android/gradle.properties b/dart/freeform-gradient/android/gradle.properties new file mode 100644 index 0000000..38c8d45 --- /dev/null +++ b/dart/freeform-gradient/android/gradle.properties @@ -0,0 +1,4 @@ +org.gradle.jvmargs=-Xmx1536M +android.enableR8=true +android.useAndroidX=true +android.enableJetifier=true diff --git a/dart/freeform-gradient/android/gradle/wrapper/gradle-wrapper.properties b/dart/freeform-gradient/android/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..da44bc1 --- /dev/null +++ b/dart/freeform-gradient/android/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Fri Jun 23 08:50:38 CEST 2017 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip diff --git a/dart/freeform-gradient/android/settings.gradle b/dart/freeform-gradient/android/settings.gradle new file mode 100644 index 0000000..5a2f14f --- /dev/null +++ b/dart/freeform-gradient/android/settings.gradle @@ -0,0 +1,15 @@ +include ':app' + +def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() + +def plugins = new Properties() +def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') +if (pluginsFile.exists()) { + pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } +} + +plugins.each { name, path -> + def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() + include ":$name" + project(":$name").projectDir = pluginDirectory +} diff --git a/dart/freeform-gradient/ios/.gitignore b/dart/freeform-gradient/ios/.gitignore new file mode 100644 index 0000000..e96ef60 --- /dev/null +++ b/dart/freeform-gradient/ios/.gitignore @@ -0,0 +1,32 @@ +*.mode1v3 +*.mode2v3 +*.moved-aside +*.pbxuser +*.perspectivev3 +**/*sync/ +.sconsign.dblite +.tags* +**/.vagrant/ +**/DerivedData/ +Icon? +**/Pods/ +**/.symlinks/ +profile +xcuserdata +**/.generated/ +Flutter/App.framework +Flutter/Flutter.framework +Flutter/Flutter.podspec +Flutter/Generated.xcconfig +Flutter/app.flx +Flutter/app.zip +Flutter/flutter_assets/ +Flutter/flutter_export_environment.sh +ServiceDefinitions.json +Runner/GeneratedPluginRegistrant.* + +# Exceptions to above rules. +!default.mode1v3 +!default.mode2v3 +!default.pbxuser +!default.perspectivev3 diff --git a/dart/freeform-gradient/ios/Flutter/AppFrameworkInfo.plist b/dart/freeform-gradient/ios/Flutter/AppFrameworkInfo.plist new file mode 100644 index 0000000..6b4c0f7 --- /dev/null +++ b/dart/freeform-gradient/ios/Flutter/AppFrameworkInfo.plist @@ -0,0 +1,26 @@ + + + + + CFBundleDevelopmentRegion + $(DEVELOPMENT_LANGUAGE) + CFBundleExecutable + App + CFBundleIdentifier + io.flutter.flutter.app + CFBundleInfoDictionaryVersion + 6.0 + CFBundleName + App + CFBundlePackageType + FMWK + CFBundleShortVersionString + 1.0 + CFBundleSignature + ???? + CFBundleVersion + 1.0 + MinimumOSVersion + 8.0 + + diff --git a/dart/freeform-gradient/ios/Flutter/Debug.xcconfig b/dart/freeform-gradient/ios/Flutter/Debug.xcconfig new file mode 100644 index 0000000..592ceee --- /dev/null +++ b/dart/freeform-gradient/ios/Flutter/Debug.xcconfig @@ -0,0 +1 @@ +#include "Generated.xcconfig" diff --git a/dart/freeform-gradient/ios/Flutter/Release.xcconfig b/dart/freeform-gradient/ios/Flutter/Release.xcconfig new file mode 100644 index 0000000..592ceee --- /dev/null +++ b/dart/freeform-gradient/ios/Flutter/Release.xcconfig @@ -0,0 +1 @@ +#include 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and b/dart/freeform-gradient/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png differ diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png b/dart/freeform-gradient/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png new file mode 100644 index 0000000..d0e1f58 Binary files /dev/null and b/dart/freeform-gradient/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png differ diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json new file mode 100644 index 0000000..0bedcf2 --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json @@ -0,0 +1,23 @@ +{ + "images" : [ + { + "idiom" : "universal", + "filename" : "LaunchImage.png", + "scale" : "1x" + }, + { + "idiom" : "universal", + "filename" : "LaunchImage@2x.png", + "scale" : "2x" + }, + { + "idiom" : "universal", + "filename" : "LaunchImage@3x.png", + "scale" : "3x" + } + ], + "info" : { + "version" : 1, + "author" : "xcode" + } +} diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png differ diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png differ diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png differ diff --git a/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md new file mode 100644 index 0000000..89c2725 --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md @@ -0,0 +1,5 @@ +# Launch Screen Assets + +You can customize the launch screen with your own desired assets by replacing the image files in this directory. + +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. \ No newline at end of file diff --git a/dart/freeform-gradient/ios/Runner/Base.lproj/LaunchScreen.storyboard b/dart/freeform-gradient/ios/Runner/Base.lproj/LaunchScreen.storyboard new file mode 100644 index 0000000..f2e259c --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Base.lproj/LaunchScreen.storyboard @@ -0,0 +1,37 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/dart/freeform-gradient/ios/Runner/Base.lproj/Main.storyboard b/dart/freeform-gradient/ios/Runner/Base.lproj/Main.storyboard new file mode 100644 index 0000000..f3c2851 --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Base.lproj/Main.storyboard @@ -0,0 +1,26 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/dart/freeform-gradient/ios/Runner/Info.plist b/dart/freeform-gradient/ios/Runner/Info.plist new file mode 100644 index 0000000..7b54eca --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Info.plist @@ -0,0 +1,45 @@ + + + + + CFBundleDevelopmentRegion + $(DEVELOPMENT_LANGUAGE) + CFBundleExecutable + $(EXECUTABLE_NAME) + CFBundleIdentifier + $(PRODUCT_BUNDLE_IDENTIFIER) + CFBundleInfoDictionaryVersion + 6.0 + CFBundleName + hello_world + CFBundlePackageType + APPL + CFBundleShortVersionString + $(FLUTTER_BUILD_NAME) + CFBundleSignature + ???? + CFBundleVersion + $(FLUTTER_BUILD_NUMBER) + LSRequiresIPhoneOS + + UILaunchStoryboardName + LaunchScreen + UIMainStoryboardFile + Main + UISupportedInterfaceOrientations + + UIInterfaceOrientationPortrait + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + UISupportedInterfaceOrientations~ipad + + UIInterfaceOrientationPortrait + UIInterfaceOrientationPortraitUpsideDown + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + UIViewControllerBasedStatusBarAppearance + + + diff --git a/dart/freeform-gradient/ios/Runner/Runner-Bridging-Header.h b/dart/freeform-gradient/ios/Runner/Runner-Bridging-Header.h new file mode 100644 index 0000000..7335fdf --- /dev/null +++ b/dart/freeform-gradient/ios/Runner/Runner-Bridging-Header.h @@ -0,0 +1 @@ +#import "GeneratedPluginRegistrant.h" \ No newline at end of file diff --git a/dart/freeform-gradient/lib/main.dart b/dart/freeform-gradient/lib/main.dart new file mode 100644 index 0000000..895a0c8 --- /dev/null +++ b/dart/freeform-gradient/lib/main.dart @@ -0,0 +1,190 @@ +import 'dart:math'; + +import 'package:flutter/material.dart'; +import 'dart:ui' as ui; +import 'dart:async'; +import 'dart:typed_data'; +import 'package:vector_math/vector_math.dart' as vector; + +void main() => runApp(Root()); + +class Root extends StatelessWidget { + @override + Widget build(BuildContext context) { + return MaterialApp( + title: 'Custom gradient', + theme: ThemeData( + primarySwatch: Colors.purple, + ), + home: FreeformGradient( + title: 'Multi point gradient', + config: MultiGradientConfig( + distanceScaling: 1, + blendStrength: 2, + points: [ + MultiGradientPoint( + color: Color(0xff6E10AB), + intensity: 1, + position: vector.Vector2(0.1, 0.09)), + MultiGradientPoint( + color: Color(0xff041E1C), + intensity: 2, + position: vector.Vector2(0.84, 0.14)), + MultiGradientPoint( + color: Color(0xff015BBB), + intensity: 1, + position: vector.Vector2(0.07, 0.93)), + MultiGradientPoint( + color: Color(0xff06A599), + intensity: 1, + position: vector.Vector2(0.9, 0.94)) + ])), + ); + } +} + +class FreeformGradient extends StatefulWidget { + FreeformGradient({Key key, this.title, this.config}) : super(key: key); + + final String title; + final MultiGradientConfig config; + + FreeformGradientState createState() => FreeformGradientState(); +} + +class MultiGradientPoint { + double intensity; + vector.Vector4 color; + vector.Vector2 position; + + MultiGradientPoint({Color color, this.position, this.intensity = 1}) { + this.color = vector.Vector4(color.red.toDouble(), color.green.toDouble(), + color.blue.toDouble(), color.opacity); + } +} + +class MultiGradientConfig { + List points; + + double distanceScaling; + double blendStrength; + double opacityMultiplier = 1; + + MultiGradientConfig( + {this.points, + this.distanceScaling = 1, + this.blendStrength = 3, + this.opacityMultiplier = 1}); +} + +class FreeformGradientState extends State { + Future gradient; + + @override + void didChangeDependencies() { + gradient = generateImage(MediaQuery.of(context).size, widget.config); + super.didChangeDependencies(); + } + + @override + Widget build(BuildContext context) { + return FutureBuilder( + future: gradient, + builder: (context, snapshot) { + if (snapshot.hasData) { + MediaQueryData query = MediaQuery.of(context); + return CustomPaint( + child: Container( + width: query.size.width, + height: query.size.height, + ), + painter: ImagePainter(image: snapshot.data)); + } + + return Text("Generating image"); + }, + ); + } +} + +class ImagePainter extends CustomPainter { + ui.Image image; + + ImagePainter({this.image}); + + @override + void paint(Canvas canvas, Size size) { + canvas.drawImage(image, Offset.zero, Paint()); + } + + @override + bool shouldRepaint(ImagePainter oldDelegate) { + return oldDelegate.image != image; + } +} + +/// Generates a [ui.Image] with certain pixel data +Future generateImage(Size size, MultiGradientConfig config) async { + int width = size.width.ceil(); + int height = size.height.ceil(); + var completer = Completer(); + + Int32List pixels = Int32List(width * height); + + for (var x = 0; x < width; x++) { + for (var y = 0; y < height; y++) { + int index = y * width + x; + pixels[index] = generatePixel(x, y, size, config); + } + } + + ui.decodeImageFromPixels( + pixels.buffer.asUint8List(), + width, + height, + ui.PixelFormat.bgra8888, + (ui.Image img) { + completer.complete(img); + }, + ); + + return completer.future; +} + +double clamp(double min, double max, double value) { + if (value < min) return min; + if (value > max) return max; + + return value; +} + +/// Main area of interest, this function will +/// return color for each particular color on our [ui.Image] +int generatePixel(int x, int y, Size size, MultiGradientConfig config) { + vector.Vector4 color = vector.Vector4(0, 0, 0, 0); + double scale = 0; + + var current = vector.Vector2(x.toDouble(), y.toDouble()); + + current.divide(vector.Vector2(size.width, size.height)); + + for (var i = 0; i < config.points.length; i++) { + MultiGradientPoint point = config.points[i]; + + var distance = pow( + 1 - point.position.distanceTo(current) / config.distanceScaling, + config.blendStrength); + var multiplier = distance * point.intensity; + + scale += multiplier; + color += point.color.scaled(multiplier); + } + + if (scale != 0) { + color.scale(1 / scale); + } + + return Color.fromRGBO(color.x.toInt(), color.y.toInt(), color.z.toInt(), + color.w * config.opacityMultiplier) + .value; +} diff --git a/dart/freeform-gradient/nix/android.nix b/dart/freeform-gradient/nix/android.nix new file mode 100644 index 0000000..bbdb2dd --- /dev/null +++ b/dart/freeform-gradient/nix/android.nix @@ -0,0 +1,18 @@ +{ androidenv }: + +androidenv.composeAndroidPackages { + toolsVersion = "25.2.5"; + platformToolsVersion = "29.0.6"; + buildToolsVersions = [ "28.0.3" ]; + includeEmulator = true; + emulatorVersion = "30.0.3"; + platformVersions = [ "28" ]; + includeSources = false; + includeDocs = false; + includeSystemImages = true; + systemImageTypes = [ "default" ]; + abiVersions = [ "x86_64" ]; + includeNDK = false; + useGoogleAPIs = false; + useGoogleTVAddOns = false; +} diff --git a/dart/freeform-gradient/nix/sources.json b/dart/freeform-gradient/nix/sources.json new file mode 100644 index 0000000..f9ff1a4 --- /dev/null +++ b/dart/freeform-gradient/nix/sources.json @@ -0,0 +1,26 @@ +{ + "niv": { + "branch": "master", + "description": "Easy dependency management for Nix projects", + "homepage": "https://github.com/nmattia/niv", + "owner": "nmattia", + "repo": "niv", + "rev": "9d35b9e4837ab88517210b1701127612c260eccf", + "sha256": "0q50xhnm8g2yfyakrh0nly4swyygxpi0a8cb9gp65wcakcgvzvdh", + "type": "tarball", + "url": "https://github.com/nmattia/niv/archive/9d35b9e4837ab88517210b1701127612c260eccf.tar.gz", + "url_template": "https://github.com///archive/.tar.gz" + }, + "nixpkgs": { + "branch": "master", + "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to", + "homepage": "https://github.com/NixOS/nixpkgs", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "7ef527cff856ea7938dba20769a6d59ebc9575e6", + "sha256": "0zhvly0b99846x1y3jyva79amf0kyi9c6lwg8l3ghig669kxlwa7", + "type": "tarball", + "url": "https://github.com/NixOS/nixpkgs/archive/7ef527cff856ea7938dba20769a6d59ebc9575e6.tar.gz", + "url_template": "https://github.com///archive/.tar.gz" + } +} diff --git a/dart/freeform-gradient/nix/sources.nix b/dart/freeform-gradient/nix/sources.nix new file mode 100644 index 0000000..b796fff --- /dev/null +++ b/dart/freeform-gradient/nix/sources.nix @@ -0,0 +1,171 @@ +# This file has been generated by Niv. + +let + + # + # The fetchers. fetch_ fetches specs of type . + # + + fetch_file = pkgs: name: spec: + let + name' = sanitizeName name + "-src"; + in + if spec.builtin or true then + builtins_fetchurl { inherit (spec) url sha256; name = name'; } + else + pkgs.fetchurl { inherit (spec) url sha256; name = name'; }; + + fetch_tarball = pkgs: name: spec: + let + name' = sanitizeName name + "-src"; + in + if spec.builtin or true then + builtins_fetchTarball { name = name'; inherit (spec) url sha256; } + else + pkgs.fetchzip { name = name'; inherit (spec) url sha256; }; + + fetch_git = name: spec: + let + ref = + if spec ? ref then spec.ref else + if spec ? branch then "refs/heads/${spec.branch}" else + if spec ? tag then "refs/tags/${spec.tag}" else + abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!"; + in + builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; }; + + fetch_local = spec: spec.path; + + fetch_builtin-tarball = name: throw + ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=tarball -a builtin=true''; + + fetch_builtin-url = name: throw + ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=file -a builtin=true''; + + # + # Various helpers + # + + # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695 + sanitizeName = name: + ( + concatMapStrings (s: if builtins.isList s then "-" else s) + ( + builtins.split "[^[:alnum:]+._?=-]+" + ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name) + ) + ); + + # The set of packages used when specs are fetched using non-builtins. + mkPkgs = sources: system: + let + sourcesNixpkgs = + import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; }; + hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath; + hasThisAsNixpkgsPath = == ./.; + in + if builtins.hasAttr "nixpkgs" sources + then sourcesNixpkgs + else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then + import {} + else + abort + '' + Please specify either (through -I or NIX_PATH=nixpkgs=...) or + add a package called "nixpkgs" to your sources.json. + ''; + + # The actual fetching function. + fetch = pkgs: name: spec: + + if ! builtins.hasAttr "type" spec then + abort "ERROR: niv spec ${name} does not have a 'type' attribute" + else if spec.type == "file" then fetch_file pkgs name spec + else if spec.type == "tarball" then fetch_tarball pkgs name spec + else if spec.type == "git" then fetch_git name spec + else if spec.type == "local" then fetch_local spec + else if spec.type == "builtin-tarball" then fetch_builtin-tarball name + else if spec.type == "builtin-url" then fetch_builtin-url name + else + abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}"; + + # If the environment variable NIV_OVERRIDE_${name} is set, then use + # the path directly as opposed to the fetched source. + replace = name: drv: + let + saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name; + ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}"; + in + if ersatz == "" then drv else ersatz; + + # Ports of functions for older nix versions + + # a Nix version of mapAttrs if the built-in doesn't exist + mapAttrs = builtins.mapAttrs or ( + f: set: with builtins; + listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set)) + ); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295 + range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257 + stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1)); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269 + stringAsChars = f: s: concatStrings (map f (stringToCharacters s)); + concatMapStrings = f: list: concatStrings (map f list); + concatStrings = builtins.concatStringsSep ""; + + # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331 + optionalAttrs = cond: as: if cond then as else {}; + + # fetchTarball version that is compatible between all the versions of Nix + builtins_fetchTarball = { url, name ? null, sha256 }@attrs: + let + inherit (builtins) lessThan nixVersion fetchTarball; + in + if lessThan nixVersion "1.12" then + fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; })) + else + fetchTarball attrs; + + # fetchurl version that is compatible between all the versions of Nix + builtins_fetchurl = { url, name ? null, sha256 }@attrs: + let + inherit (builtins) lessThan nixVersion fetchurl; + in + if lessThan nixVersion "1.12" then + fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; })) + else + fetchurl attrs; + + # Create the final "sources" from the config + mkSources = config: + mapAttrs ( + name: spec: + if builtins.hasAttr "outPath" spec + then abort + "The values in sources.json should not have an 'outPath' attribute" + else + spec // { outPath = replace name (fetch config.pkgs name spec); } + ) config.sources; + + # The "config" used by the fetchers + mkConfig = + { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null + , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile) + , system ? builtins.currentSystem + , pkgs ? mkPkgs sources system + }: rec { + # The sources, i.e. the attribute set of spec name to spec + inherit sources; + + # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers + inherit pkgs; + }; + +in +mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); } diff --git a/dart/freeform-gradient/pubspec.lock b/dart/freeform-gradient/pubspec.lock new file mode 100644 index 0000000..543838a --- /dev/null +++ b/dart/freeform-gradient/pubspec.lock @@ -0,0 +1,188 @@ +# Generated by pub +# See https://dart.dev/tools/pub/glossary#lockfile +packages: + archive: + dependency: transitive + description: + name: archive + url: "https://pub.dartlang.org" + source: hosted + version: "2.0.13" + args: + dependency: transitive + description: + name: args + url: "https://pub.dartlang.org" + source: hosted + version: "1.6.0" + async: + dependency: transitive + description: + name: async + url: "https://pub.dartlang.org" + source: hosted + version: "2.4.1" + boolean_selector: + dependency: transitive + description: + name: boolean_selector + url: "https://pub.dartlang.org" + source: hosted + version: "2.0.0" + charcode: + dependency: transitive + description: + name: charcode + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.3" + collection: + dependency: transitive + description: + name: collection + url: "https://pub.dartlang.org" + source: hosted + version: "1.14.12" + convert: + dependency: transitive + description: + name: convert + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.1" + crypto: + dependency: transitive + description: + name: crypto + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.4" + cupertino_icons: + dependency: "direct main" + description: + name: cupertino_icons + url: "https://pub.dartlang.org" + source: hosted + version: "0.1.3" + flutter: + dependency: "direct main" + description: flutter + source: sdk + version: "0.0.0" + flutter_test: + dependency: "direct dev" + description: flutter + source: sdk + version: "0.0.0" + image: + dependency: transitive + description: + name: image + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.12" + matcher: + dependency: transitive + description: + name: matcher + url: "https://pub.dartlang.org" + source: hosted + version: "0.12.6" + meta: + dependency: transitive + description: + name: meta + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.8" + path: + dependency: transitive + description: + name: path + url: "https://pub.dartlang.org" + source: hosted + version: "1.6.4" + petitparser: + dependency: transitive + description: + name: petitparser + url: "https://pub.dartlang.org" + source: hosted + version: "2.4.0" + quiver: + dependency: transitive + description: + name: quiver + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.3" + sky_engine: + dependency: transitive + description: flutter + source: sdk + version: "0.0.99" + source_span: + dependency: transitive + description: + name: source_span + url: "https://pub.dartlang.org" + source: hosted + version: "1.7.0" + stack_trace: + dependency: transitive + description: + name: stack_trace + url: "https://pub.dartlang.org" + source: hosted + version: "1.9.3" + stream_channel: + dependency: transitive + description: + name: stream_channel + url: "https://pub.dartlang.org" + source: hosted + version: "2.0.0" + string_scanner: + dependency: transitive + description: + name: string_scanner + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.5" + term_glyph: + dependency: transitive + description: + name: term_glyph + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.0" + test_api: + dependency: transitive + description: + name: test_api + url: "https://pub.dartlang.org" + source: hosted + version: "0.2.15" + typed_data: + dependency: transitive + description: + name: typed_data + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.6" + vector_math: + dependency: transitive + description: + name: vector_math + url: "https://pub.dartlang.org" + source: hosted + version: "2.0.8" + xml: + dependency: transitive + description: + name: xml + url: "https://pub.dartlang.org" + source: hosted + version: "3.6.1" +sdks: + dart: ">=2.6.0 <3.0.0" diff --git a/dart/freeform-gradient/pubspec.yaml b/dart/freeform-gradient/pubspec.yaml new file mode 100644 index 0000000..d7e0dea --- /dev/null +++ b/dart/freeform-gradient/pubspec.yaml @@ -0,0 +1,58 @@ +name: hello_world +description: A new Flutter project. + +version: 1.0.0+1 + +environment: + sdk: ">=2.1.0 <3.0.0" + +dependencies: + flutter: + sdk: flutter + + cupertino_icons: ^0.1.2 + +dev_dependencies: + flutter_test: + sdk: flutter + +# For information on the generic Dart part of this file, see the +# following page: https://dart.dev/tools/pub/pubspec + +# The following section is specific to Flutter. +flutter: + # The following line ensures that the Material Icons font is + # included with your application, so that you can use the icons in + # the material Icons class. + uses-material-design: true + + # To add assets to your application, add an assets section, like this: + # assets: + # - images/a_dot_burr.jpeg + # - images/a_dot_ham.jpeg + + # An image asset can refer to one or more resolution-specific "variants", see + # https://flutter.dev/assets-and-images/#resolution-aware. + + # For details regarding adding assets from package dependencies, see + # https://flutter.dev/assets-and-images/#from-packages + + # To add custom fonts to your application, add a fonts section here, + # in this "flutter" section. Each entry in this list should have a + # "family" key with the font family name, and a "fonts" key with a + # list giving the asset and other descriptors for the font. For + # example: + # fonts: + # - family: Schyler + # fonts: + # - asset: fonts/Schyler-Regular.ttf + # - asset: fonts/Schyler-Italic.ttf + # style: italic + # - family: Trajan Pro + # fonts: + # - asset: fonts/TrajanPro.ttf + # - asset: fonts/TrajanPro_Bold.ttf + # weight: 700 + # + # For details regarding fonts from package dependencies, + # see https://flutter.dev/custom-fonts/#from-packages diff --git a/dart/freeform-gradient/shell.nix b/dart/freeform-gradient/shell.nix new file mode 100644 index 0000000..b7998f8 --- /dev/null +++ b/dart/freeform-gradient/shell.nix @@ -0,0 +1,18 @@ +{ sources ? import ./nix/sources.nix }: + +let + pkgs = import sources.nixpkgs { config.android_sdk.accept_license = true;}; + android = pkgs.callPackage ./nix/android.nix { }; +in pkgs.mkShell { + buildInputs = with pkgs; [ + # from pkgs + flutter + jdk + niv + #from ./nix/* + android.platform-tools ]; + + ANDROID_HOME = "${android.androidsdk}/libexec/android-sdk"; + JAVA_HOME = pkgs.jdk; + ANDROID_AVD_HOME = (toString ./.) + "/.android/avd"; +} diff --git a/dart/freeform-gradient/test/widget_test.dart b/dart/freeform-gradient/test/widget_test.dart new file mode 100644 index 0000000..5cbb846 --- /dev/null +++ b/dart/freeform-gradient/test/widget_test.dart @@ -0,0 +1,30 @@ +// This is a basic Flutter widget test. +// +// To perform an interaction with a widget in your test, use the WidgetTester +// utility that Flutter provides. For example, you can send tap and scroll +// gestures. You can also use WidgetTester to find child widgets in the widget +// tree, read text, and verify that the values of widget properties are correct. + +import 'package:flutter/material.dart'; +import 'package:flutter_test/flutter_test.dart'; + +import 'package:hello_world/main.dart'; + +void main() { + testWidgets('Counter increments smoke test', (WidgetTester tester) async { + // Build our app and trigger a frame. + await tester.pumpWidget(Root()); + + // Verify that our counter starts at 0. + expect(find.text('0'), findsOneWidget); + expect(find.text('1'), findsNothing); + + // Tap the '+' icon and trigger a frame. + await tester.tap(find.byIcon(Icons.add)); + await tester.pump(); + + // Verify that our counter has incremented. + expect(find.text('0'), findsNothing); + expect(find.text('1'), findsOneWidget); + }); +} diff --git a/dart/freeform-gradient/web/index.html b/dart/freeform-gradient/web/index.html new file mode 100644 index 0000000..92c3cae --- /dev/null +++ b/dart/freeform-gradient/web/index.html @@ -0,0 +1,10 @@ + + + + + hello_world + + + + +