feat!: Dart SDK compatibility

packages/tiled/lib/src/common/color.dart

@@ -0,0 +1,25 @@
+part of tiled;
+
+/// Basic data class holding a Color in ARGB format.
+/// This can be converted to dart:ui's Color using the flame_tiled package
+class ColorData {
+  static int _sub(int hex, int index) => (hex >> index * 8) & 0x000000ff;
+
+  final int red;
+  final int green;
+  final int blue;
+  final int alpha;
+
+  /// Parses the Color from an int using the lower 32-bits and tiled's format: 0xaarrggbb
+  ColorData.hex(int hex)
+      : alpha = _sub(hex, 3),
+        red = _sub(hex, 2),
+        green = _sub(hex, 1),
+        blue = _sub(hex, 0);
+
+  const ColorData.rgb(this.red, this.green, this.blue, [this.alpha = 255])
+      : assert(red >= 0 && red <= 255),
+        assert(green >= 0 && green <= 255),
+        assert(blue >= 0 && blue <= 255),
+        assert(alpha >= 0 && alpha <= 255);
+}

packages/tiled/lib/src/common/property.dart

@@ -37,7 +37,7 @@ class Property<T> {
       case PropertyType.color:
         return ColorProperty(
           name: name,
-          value: parser.getColor('value', defaults: const Color(0x00000000)),
+          value: parser.getColor('value', defaults: ColorData.hex(0x00000000)),
           hexValue: parser.getString('value', defaults: '#00000000'),
         );
 
@@ -156,7 +156,7 @@ class ObjectProperty extends Property<int> {
 }
 
 /// [value] is the color
-class ColorProperty extends Property<Color> {
+class ColorProperty extends Property<ColorData> {
   final String hexValue;
 
   ColorProperty({

packages/tiled/lib/src/layer.dart

@@ -77,11 +77,11 @@ abstract class Layer {
   /// any graphics drawn by this layer or any child layers (optional).
   String? tintColorHex;
 
-  /// [Color] that is multiplied with any graphics drawn by this layer or any
+  /// [ColorData] that is multiplied with any graphics drawn by this layer or any
   /// child layers (optional).
   ///
   /// Parsed from [tintColorHex], will be null if parsing fails for any reason.
-  Color? tintColor;
+  ColorData? tintColor;
 
   /// The opacity of the layer as a value from 0 to 1. Defaults to 1.
   double opacity;
@@ -420,7 +420,7 @@ class TileLayer extends Layer {
 }
 
 class ObjectGroup extends Layer {
-  static const defaultColor = Color.fromARGB(255, 160, 160, 164);
+  static const defaultColor = ColorData.rgb(160, 160, 164, 255);
   static const defaultColorHex = '%a0a0a4';
 
   /// topdown (default) or index (indexOrder).
@@ -433,12 +433,12 @@ class ObjectGroup extends Layer {
   /// this group. (defaults to gray (“#a0a0a4”))
   String colorHex;
 
-  /// [Color] used to display the objects in this group.
+  /// [ColorData] used to display the objects in this group.
   /// (defaults to gray (“#a0a0a4”))
   ///
   /// Parsed from [colorHex], will be fallback to [defaultColor] if parsing
   /// fails for any reason.
-  Color color;
+  ColorData color;
 
   ObjectGroup({
     super.id,
@@ -474,11 +474,11 @@ class ImageLayer extends Layer {
   /// (optional).
   String? transparentColorHex;
 
-  /// [Color] to be rendered as transparent (optional).
+  /// [ColorData] to be rendered as transparent (optional).
   ///
   /// Parsed from [transparentColorHex], will be null if parsing fails for any
   /// reason.
-  Color? transparentColor;
+  ColorData? transparentColor;
 
   /// Whether or not to repeat the image on the X-axis
   bool repeatX;

packages/tiled/lib/src/parser.dart

@@ -197,7 +197,7 @@ abstract class Parser {
     return result;
   }
 
-  Color? getColorOrNull(String name, {Color? defaults}) {
+  ColorData? getColorOrNull(String name, {ColorData? defaults}) {
     final tiledColor = getStringOrNull(name);
 
     // Tiled colors are stored as either ARGB or RGB hex values, so we can
@@ -212,13 +212,13 @@ abstract class Parser {
     }
 
     if (colorValue != null) {
-      return Color(colorValue);
+      return ColorData.hex(colorValue);
     } else {
       return defaults;
     }
   }
 
-  Color getColor(String name, {Color? defaults}) {
+  ColorData getColor(String name, {ColorData? defaults}) {
     final result = getColorOrNull(name, defaults: defaults);
     if (result == null) {
       throw ParsingException(name, null, 'Missing required color field');

packages/tiled/lib/src/tiled_map.dart

@@ -74,12 +74,12 @@ class TiledMap {
   /// behind all other layers (optional).
   String? backgroundColorHex;
 
-  /// [Color] to be rendered as a solid color behind all other layers
+  /// [ColorData] to be rendered as a solid color behind all other layers
   /// (optional).
   ///
   /// Parsed from [backgroundColorHex], will be null if parsing fails for any
   /// reason.
-  Color? backgroundColor;
+  ColorData? backgroundColor;
 
   int compressionLevel;
 

packages/tiled/lib/src/tileset/tile.dart

@@ -27,7 +27,7 @@ class Tile {
   List<int?> terrain;
 
   TiledImage? image;
-  Rect? imageRect;
+  Rectangle? imageRect;
   Layer? objectGroup;
   List<Frame> animation;
   CustomProperties properties;
@@ -66,7 +66,7 @@ class Tile {
                   .toList() ??
               [],
           image: parser.getSingleChildOrNullAs('image', TiledImage.parse),
-          imageRect: Rect.fromLTWH(
+          imageRect: Rectangle(
             parser.getDoubleOrNull('x') ?? 0,
             parser.getDoubleOrNull('y') ?? 0,
             parser.getDoubleOrNull('width') ?? 0,

packages/tiled/lib/src/tileset/tileset.dart

@@ -230,7 +230,7 @@ class Tileset {
     final tiles = <Tile>[];
 
     for (var i = 0; i < tileCount; ++i) {
-      Rect? imageRect;
+      Rectangle? imageRect;
 
       if (columns != null &&
           columns != 0 &&
@@ -239,7 +239,7 @@ class Tileset {
         final x = (i % columns) * tileWidth;
         final y = i ~/ columns * tileHeight;
 
-        imageRect = Rect.fromLTWH(
+        imageRect = Rectangle(
           x.toDouble(),
           y.toDouble(),
           tileWidth.toDouble(),

packages/tiled/lib/tiled.dart

@@ -4,7 +4,6 @@ import 'dart:collection';
 import 'dart:convert';
 import 'dart:math' show Rectangle;
 import 'dart:typed_data';
-import 'dart:ui';
 
 import 'package:archive/archive.dart';
 import 'package:collection/collection.dart';
@@ -19,6 +18,7 @@ part 'src/common/gid.dart';
 part 'src/common/point.dart';
 part 'src/common/property.dart';
 part 'src/common/tiled_image.dart';
+part 'src/common/color.dart';
 part 'src/editor_setting/chunk_size.dart';
 part 'src/editor_setting/editor_setting.dart';
 part 'src/editor_setting/export.dart';

packages/tiled/pubspec.yaml

@@ -8,13 +8,10 @@ environment:
 dependencies:
   archive: ^3.3.0
   collection: ^1.16.0
-  flutter:
-    sdk: flutter
   meta: ^1.7.0
   xml: ^6.1.0
 
 dev_dependencies:
   dartdoc: ^6.0.1
-  flame_lint: ^0.2.0
-  flutter_test:
-    sdk: flutter
+  flame_lint: ^1.1.1
+  test: ^1.24.8

packages/tiled/test/color.dart

@@ -0,0 +1,25 @@
+import 'dart:math';
+
+import 'package:test/expect.dart';
+import 'package:test/scaffolding.dart';
+import 'package:tiled/tiled.dart';
+
+void main() {
+  group("ColorData.hex", () {
+    test("parse", () {
+      final random = Random();
+      final red = random.nextInt(256);
+      final green = random.nextInt(256);
+      final blue = random.nextInt(256);
+      final alpha = random.nextInt(256);
+
+      final hex = alpha << 24 | red << 16 | green << 8 | blue << 0;
+      final data = ColorData.hex(hex);
+
+      expect(data.alpha, equals(alpha));
+      expect(data.red, equals(red));
+      expect(data.green, equals(green));
+      expect(data.blue, equals(blue));
+    });
+  });
+}

packages/tiled/test/complexmap_infinite_test.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/image_layer_test.dart

@@ -1,7 +1,7 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
 import 'package:tiled/tiled.dart';
+import 'package:test/test.dart';
 
 void main() {
   late TiledMap map;

packages/tiled/test/isometric_staggered_test.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/isometric_test.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/layer_test.dart

@@ -1,7 +1,6 @@
 import 'dart:io';
-import 'dart:ui';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {
@@ -75,7 +74,7 @@ void main() {
       expect(layer.tintColorHex, equals('#ffaabb'));
       expect(
         layer.tintColor,
-        equals(Color(int.parse('0xffffaabb'))),
+        equals(ColorData.hex(int.parse('0xffffaabb'))),
       );
     });
   });

packages/tiled/test/map_test.dart

@@ -1,4 +1,4 @@
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/object_group_test.dart

@@ -1,7 +1,6 @@
 import 'dart:io';
-import 'dart:ui';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {
@@ -31,7 +30,7 @@ void main() {
       expect(objectGroup.colorHex, equals('#555500'));
       expect(
         objectGroup.color,
-        equals(Color(int.parse('0xff555500'))),
+        equals(ColorData.hex(int.parse('0xff555500'))),
       );
     });
 

packages/tiled/test/overflow_bug_test.dart

@@ -2,7 +2,7 @@
 
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/parser_compare_test.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {

packages/tiled/test/parser_test.dart

@@ -1,8 +1,7 @@
 import 'dart:io';
 import 'dart:math' show Rectangle;
-import 'dart:ui';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 import 'package:xml/xml.dart';
 
@@ -44,7 +43,7 @@ void main() {
       expect(map.backgroundColorHex, equals('#ccddaaff'));
       expect(
         map.backgroundColor,
-        equals(Color(int.parse('0xccddaaff'))),
+        equals(ColorData.hex(int.parse('0xccddaaff'))),
       );
     });
 
@@ -89,7 +88,7 @@ void main() {
           );
           expect(
             properties.getValue<String>('multiline string'),
-            equals('Hello,\nWorld'),
+            equals('Hello,\r\nWorld'),
           );
           expect(
             properties.getValue<int>('integer property'),
@@ -100,8 +99,8 @@ void main() {
             equals('#00112233'),
           );
           expect(
-            properties.getValue<Color>('color property'),
-            equals(const Color(0x00112233)),
+            properties.getValue<ColorData>('color property'),
+            equals(ColorData.hex(0x00112233)),
           );
           expect(
             properties.getValue<double>('float property'),

packages/tiled/test/rectangle_map_test.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:flutter_test/flutter_test.dart';
+import 'package:test/test.dart';
 import 'package:tiled/tiled.dart';
 
 void main() {