[adaptive_style] add DeviceSize and mostSimilarTo

packages/adaptive_style/.gitignore

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+# 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
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

packages/adaptive_style/CHANGELOG.md

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+## 0.0.1
+
+* TODO: Describe initial release.

packages/adaptive_style/LICENSE

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+TODO: Add your license here.

packages/adaptive_style/README.md

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+<!--
+This README describes the package. If you publish this package to pub.dev,
+this README's contents appear on the landing page for your package.
+
+For information about how to write a good package README, see the guide for
+[writing package pages](https://dart.dev/guides/libraries/writing-package-pages).
+
+For general information about developing packages, see the Dart guide for
+[creating packages](https://dart.dev/guides/libraries/create-library-packages)
+and the Flutter guide for
+[developing packages and plugins](https://flutter.dev/developing-packages).
+-->
+
+TODO: Put a short description of the package here that helps potential users
+know whether this package might be useful for them.
+
+## Features
+
+TODO: List what your package can do. Maybe include images, gifs, or videos.
+
+## Getting started
+
+TODO: List prerequisites and provide or point to information on how to
+start using the package.
+
+## Usage
+
+TODO: Include short and useful examples for package users. Add longer examples
+to `/example` folder.
+
+```dart
+const like = 'sample';
+```
+
+## Additional information
+
+TODO: Tell users more about the package: where to find more information, how to
+contribute to the package, how to file issues, what response they can expect
+from the package authors, and more.

packages/adaptive_style/analysis_options.yaml

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+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

packages/adaptive_style/lib/adaptive_style.dart

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+library adaptive_style;

packages/adaptive_style/lib/src/device_size.dart

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+import 'dart:ui';
+
+/// a collection of well known screen dimesions
+/// as offered by [chrome device toolbar]
+enum DeviceSize {
+  iphoneSE(Size(375, 667)),
+  iphoneXR(Size(414, 896)),
+  iphone12PRO(Size(390, 844)),
+  iphone14PRO(Size(430, 932)),
+  pixel7(Size(412, 915)),
+  galaxyS8Plus(Size(360, 740)),
+  galaxyS20Ultra(Size(412, 915)),
+  iPadMini(Size(768, 1024)),
+  iPadAir(Size(820, 1180)),
+  iPadPro(Size(1024, 1366)),
+  surfacePro7(Size(912, 1368)),
+  surfaceDuo(Size(540, 720)),
+  galaxyFold(Size(280, 653)),
+  galaxyA51(Size(412, 914)),
+  galaxyA71(Size(412, 914)),
+  nestHub(Size(1024, 600)),
+  nestHubMax(Size(1280, 800));
+
+  const DeviceSize(this.size);
+
+  final Size size;
+}

packages/adaptive_style/lib/src/extension.dart

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+import 'dart:math' as math show min, sqrt;
+import 'dart:ui';
+
+import 'device_size.dart';
+
+extension DeviceSizeSizesX on List<DeviceSize> {
+  List<Size> get sizes => [for (final value in this) value.size];
+}
+
+extension FixedRatioSizeScaleX<T extends Size> on T {
+  double fixedRatioScale(T size) => math.min(
+        width / size.width,
+        height / size.height,
+      );
+}
+
+extension ReverseScaleX<T extends double> on T {
+  double get reversedRatio => 1 / this;
+}
+
+extension SizeAreaX<T extends Size> on T {
+  double get area => width * height;
+}
+
+extension MostSimilarSizeX<T extends Size> on Iterable<T> {
+  T mostSimilarTo(T size) {
+    final sizes = [
+      for (final element in this)
+        (
+          element,
+
+          /// this is arbitrary but seems to work
+          (size.aspectRatio - element.aspectRatio).abs() *
+              math.sqrt((size.area - element.area).abs())
+        )
+    ]..sort(
+        (a, b) => a.$2.compareTo(b.$2),
+      );
+
+    return sizes.first.$1;
+  }
+}

packages/adaptive_style/pubspec.yaml

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+name: adaptive_style
+description: Make you Flutter UI both responsive and adaptive
+version: 0.0.1
+homepage: https://github.com/yakforward-ou/yak_packages
+
+environment:
+  sdk: '>=3.3.3 <4.0.0'
+
+dependencies:
+  flutter:
+    sdk: flutter
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^3.0.2