Fix bitwise comparaison on web (#274)

Fixes #273

.github/workflows/analyze-and-test.yaml

@@ -34,7 +34,7 @@ jobs:
               && exit 1)
         shell: bash
   build_web_version:
-    name: Check that the web version compile
+    name: Check that the web version can compile
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

CHANGELOG.md

@@ -1,13 +1,72 @@
-## [1.4.2]
+## 2.3.2
+- Fix a bug when running on the web due to [bitwise operations difference](https://dart.dev/guides/language/numbers#bitwise-operations).
+
+## 2.3.1
+- Fix an assertion for null `ShapeTrimPathType.type`.
+
+## 2.3.0
+- Fixed a failed assertion (`dirty: is not true`) when calling `setState` inside `onLoaded` callback.
+- Update point text y offset
+- Makes static compositions not animate by default
+
+## 2.2.0
+Apply the latest fixes from Lottie-Android:
+
+- Overhaul text layout
+- Fix rounded corners modifying already rounded corners
+- Support box position in Document Data
+- Allow interpolating between gradients with different opacity stops
+- Add support for gradient opacity stops
+
+## 2.1.0
+- Improve the cache to ensure that there is not an empty frame each time we load an animation.  
+  The method `AssetLottie('anim.json').load()` returns a `SynchronousFuture` if it has been loaded previously.
+- Expose the `LottieCache` singleton.
+  It allows to change the cache behaviour and clear the entries.
+
+```dart
+void main() {
+  Lottie.cache.maximumSize = 10;
+  Lottie.cache.clear();
+  Lottie.cache.evict(NetworkLottie('https://lottie.com/anim.json'));
+}
+```
+
+## 2.0.0
+- **Breaking change**: the lottie widget will be smaller if it relies on the intrinsic size of the composition. 
+
+Previously the lottie parser was automatically multiplying the size of the composition by `window.devicePixelRatio`.
+This was incorrect as it results in a widget of a different size depending on the pixel ratio of the monitor. 
+Furthermore, it created some bugs when the property `window.devicePixelRatio` was not available immediately at the start
+of the app (on Android release builds). 
+
+The code can be adapted to specify explicitly the size of the animation with `width`, `height` and `fit` properties.
+
+```dart
+Scaffold(
+  body: Center(
+    child: Lottie.asset(
+      'assets/LottieLogo1.json',
+      height: 800,
+      fit: BoxFit.contain,
+    ),
+  ),
+);
+```
+
+## 1.4.3
+- Fixed some lints with Flutter 3.3. 
+
+## 1.4.2
 - Use `FilterQuality.low` as default to draw image layers.
 
-## [1.4.1]
+## 1.4.1
 - Allow `AlignmentGeometry` for `alignment`.
 
-## [1.4.0]
+## 1.4.0
 - Added `filterQuality` property to control the performance vs quality trade-off to use when drawing images
 
-## [1.3.0]
+## 1.3.0
 - Added support for rounded corners on shapes and rects
 - Add support for text in dynamic properties (`ValueDelegate`)
 
@@ -29,13 +88,13 @@ Lottie.asset(
 - Add support for reversed polystar paths
 - Enforce order of operations to avoid rounding errors
 
-## [1.2.2]
+## 1.2.2
 - Internal maintenance: fix lints for Flutter 2.10
 
-## [1.2.1]
+## 1.2.1
 - Fix: Revert Cubic to `PathInterpolator.cubic`
 
-## [1.2.0]
+## 1.2.0
 - Add support for gaussian blurs.
 
 Example to blur some elements dynamically:
@@ -72,7 +131,7 @@ Lottie.asset(
 )
 ```
 
-## [1.1.0]
+## 1.1.0
 - Add `errorBuilder` callback to provide an alternative widget in case an error occurs during loading.
 ```dart
 Lottie.network(
@@ -94,25 +153,25 @@ Lottie.network(
   ```
 - Various bug fixes
 
-## [1.0.1]
+## 1.0.1
 - Implement `RenderBox.computeDryLayout`
 
-## [1.0.0]
+## 1.0.0
 - Migrate to null safety
 - Fix some rendering bugs
 - Add an image delegate to dynamically change images
 - Allow to use an imageProviderFactory with a zip file
 
-## [0.7.1]
+## 0.7.1
 - Fix a crash for some lottie file with empty paths.
 
-## [0.7.0+1]
+## 0.7.0+1
 - Fix Flutter Web compilation error
 
-## [0.7.0]
+## 0.7.0
 - Performance improvement for complex animations.
 
-## [0.6.0]
+## 0.6.0
 - Runs the animation at the frame rate specified in the json file (ie. An animation encoded with a 20 FPS will only
   be paint 20 times per seconds even though the AnimationController will invalidate the widget 60 times per seconds).  
   A new property `frameRate` allows to opt-out this behavior and have the widget to repaint at the device frame rate 
@@ -123,20 +182,20 @@ Lottie.network(
 - Fix a bug where we would call `markNeedPaint` when the animation was not changing. This removes unnecessary paints in
   animations with static periods.
 
-## [0.5.1]
+## 0.5.1
 - Remove direct dependencies on dart:io to support Flutter Web
 
-## [0.5.0]
+## 0.5.0
 - Support loading animation from network in a web app
 - Fix a couple of bugs with the web dev compiler
 
-## [0.4.1]
+## 0.4.1
 - Support color value stored as RGB, not RGBA 
 
-## [0.4.0+1]
+## 0.4.0+1
 - Support latest version of the `characters` package
 
-## [0.4.0]
+## 0.4.0
 - Disable "Merge paths" by default and provide an option to enable them.  
 This is the same behavior as in Lottie-android.  
 Merge paths currently don't work if the the operand shape is entirely contained within the
@@ -149,62 +208,62 @@ Lottie.asset('file.json', options: LottieOptions(enableMergePaths: true));
 ```
 
 
-## [0.3.6]
+## 0.3.6
 - Export the `Marker` class
 
-## [0.3.5]
+## 0.3.5
 - Fix a bug with a wrongly clipped rectangle. 
 
-## [0.3.4]
+## 0.3.4
 - Fix a bug with dashed path
 
-## [0.3.3]
+## 0.3.3
 - Fix a bug with rounded rectangle shape
 
-## [0.3.2]
+## 0.3.2
 - Fix a bug with "repeater" content
 
-## [0.3.1]
+## 0.3.1
 - Support dashed path
 
-## [0.3.0+1]
+## 0.3.0+1
 - Specify a version range for the dependency on `characters`.
 
-## [0.3.0]
+## 0.3.0
 - Add `LottieDelegates` a group of options to customize the lottie animation at runtime.
   ie: Dynamically modify color, position, size, text... of every elements of the animation.
 - Correctly display Linear and Radial Gradients
 - Integrate latest changes from Lottie-android
 
-## [0.2.2]
+## 0.2.2
 - Add a [repeat] parameter to specify if the automatic animation should loop.
 - Add the [animate], [reverse], [repeat] properties on `LottieBuilder`
 - Fix bug with `onLoaded` callback when the `LottieProvider` is changed
 
-## [0.2.1]
+## 0.2.1
 - Fix a big bug in the path transformation code. A lot more animations look correct now.
 
-## [0.2.0+1]
+## 0.2.0+1
 - Improve readme
 - (internal) Add golden tests
 
-## [0.2.0]
+## 0.2.0
 - Support loading the animation and its images from a zip file
 - Breaking: `LottieComposition.fromBytes` and `fromByteData` are now asynchronous.
 
-## [0.1.4]
+## 0.1.4
 - Support images in animation
 - Basic support for text in animation (work in progress)
 
-## [0.1.3]
+## 0.1.3
 - Support Polystar shape
 - Reorganize examples.
 
-## [0.1.2]
+## 0.1.2
 - Implement `Lottie.network`, `Lottie.file` and `Lottie.memory`
 
-## [0.1.1]
+## 0.1.1
 - Fix analysis lints
 
-## [0.1.0]
+## 0.1.0
 - Initial conversion of [lottie-android](https://github.com/airbnb/lottie-android) to Dart/Flutter

README.md

@@ -23,7 +23,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -61,7 +61,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();
@@ -129,14 +129,13 @@ animation.
 The `Lottie` widget has several convenient constructors (`Lottie.asset`, `Lottie.network`, `Lottie.memory`) to load, parse and
 cache automatically the json file.
 
-Sometime you may prefer to have full control over the loading of the file. Use `LottieComposition.fromByteData` to 
-parse the file from a list of bytes.
+Sometime you may prefer to have full control over the loading of the file. Use `AssetLottie` (or `NetworkLottie`, `MemoryLottie`) to load a lottie composition from a json file.
 
 This example shows how to load and parse a Lottie composition from a json file.  
 
 ```dart
 class MyWidget extends StatefulWidget {
-  const MyWidget({Key? key}) : super(key: key);
+  const MyWidget({super.key});
 
   @override
   State<MyWidget> createState() => _MyWidgetState();
@@ -149,12 +148,7 @@ class _MyWidgetState extends State<MyWidget> {
   void initState() {
     super.initState();
 
-    _composition = _loadComposition();
-  }
-
-  Future<LottieComposition> _loadComposition() async {
-    var assetData = await rootBundle.load('assets/LottieLogo1.json');
-    return await LottieComposition.fromByteData(assetData);
+    _composition = AssetLottie('assets/LottieLogo1.json').load();
   }
 
   @override
@@ -182,7 +176,7 @@ a specific position and size.
 class CustomDrawer extends StatelessWidget {
   final LottieComposition composition;
 
-  const CustomDrawer(this.composition, {Key? key}) : super(key: key);
+  const CustomDrawer(this.composition, {super.key});
 
   @override
   Widget build(BuildContext context) {

README.template.md

@@ -51,8 +51,7 @@ animation.
 The `Lottie` widget has several convenient constructors (`Lottie.asset`, `Lottie.network`, `Lottie.memory`) to load, parse and
 cache automatically the json file.
 
-Sometime you may prefer to have full control over the loading of the file. Use `LottieComposition.fromByteData` to 
-parse the file from a list of bytes.
+Sometime you may prefer to have full control over the loading of the file. Use `AssetLottie` (or `NetworkLottie`, `MemoryLottie`) to load a lottie composition from a json file.
 
 This example shows how to load and parse a Lottie composition from a json file.  
 

analysis_options.yaml

@@ -1,8 +1,8 @@
 include: package:flutter_lints/flutter.yaml
 analyzer:
-  strong-mode:
-    implicit-casts: false
-    implicit-dynamic: false
+  language:
+    strict-casts: true
+    strict-inference: true
 linter:
   rules:
     avoid_print: false
@@ -10,14 +10,17 @@ linter:
     always_declare_return_types: true
     avoid_dynamic_calls: true
     avoid_escaping_inner_quotes: true
+    avoid_final_parameters: true
+    avoid_returning_null_for_future: true
     avoid_setters_without_getters: true
+    cancel_subscriptions: true
     cast_nullable_to_non_nullable: true
     close_sinks: true
     no_adjacent_strings_in_list: true
     no_default_cases: true
     omit_local_variable_types: true
     only_throw_errors: true
-    prefer_interpolation_to_compose_strings: true
+    prefer_relative_imports: true
     prefer_single_quotes: true
     sort_child_properties_last: true
     sort_pub_dependencies: true
@@ -27,3 +30,4 @@ linter:
     unnecessary_statements: true
     unsafe_html: true
     use_raw_strings: true
+    use_super_parameters: true

example/README.md

@@ -9,7 +9,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/assets/Tests/BeyondBounds.json

@@ -0,0 +1 @@
+{"v":"5.8.2","fr":23.9759979248047,"ip":0,"op":71.9999937681822,"w":400,"h":400,"nm":"BeyondBounds","ddd":0,"assets":[],"layers":[{"ddd":0,"ind":1,"ty":4,"nm":"Shape Layer 1","sr":1,"ks":{"o":{"a":0,"k":100,"ix":11},"r":{"a":0,"k":0,"ix":10},"p":{"a":0,"k":[200,200,0],"ix":2,"l":2},"a":{"a":0,"k":[0,0,0],"ix":1,"l":2},"s":{"a":0,"k":[100,100,100],"ix":6,"l":2}},"ao":0,"shapes":[{"ty":"gr","it":[{"d":1,"ty":"el","s":{"a":0,"k":[510.547,510.547],"ix":2},"p":{"a":0,"k":[0,0],"ix":3},"nm":"Ellipse Path 1","mn":"ADBE Vector Shape - Ellipse","hd":false},{"ty":"fl","c":{"a":0,"k":[1,0,0,1],"ix":4},"o":{"a":0,"k":100,"ix":5},"r":1,"bm":0,"nm":"Fill 1","mn":"ADBE Vector Graphic - Fill","hd":false},{"ty":"tr","p":{"a":0,"k":[0,0],"ix":2},"a":{"a":0,"k":[0,0],"ix":1},"s":{"a":0,"k":[100,100],"ix":3},"r":{"a":0,"k":0,"ix":6},"o":{"a":0,"k":100,"ix":7},"sk":{"a":0,"k":0,"ix":4},"sa":{"a":0,"k":0,"ix":5},"nm":"Transform"}],"nm":"Ellipse 1","np":2,"cix":2,"bm":0,"ix":1,"mn":"ADBE Vector Group","hd":false}],"ip":0,"op":71.9999937681822,"st":0,"bm":0}],"markers":[]}

example/assets/Tests/Framerate.json

@@ -0,0 +1 @@
+{"v":"5.9.6","fr":3,"ip":0,"op":3,"w":200,"h":200,"nm":"Comp 1","ddd":0,"assets":[],"layers":[{"ddd":0,"ind":1,"ty":4,"nm":"Shape Layer 1","sr":1,"ks":{"o":{"a":0,"k":100,"ix":11},"r":{"a":0,"k":0,"ix":10},"p":{"a":1,"k":[{"i":{"x":0.833,"y":0.833},"o":{"x":0.167,"y":0.167},"t":0,"s":[30,30,0],"to":[21.667,21.667,0],"ti":[-21.667,-21.667,0]},{"t":2,"s":[160,160,0]}],"ix":2,"l":2},"a":{"a":0,"k":[0,0,0],"ix":1,"l":2},"s":{"a":0,"k":[100,100,100],"ix":6,"l":2}},"ao":0,"shapes":[{"ty":"gr","it":[{"ty":"rc","d":1,"s":{"a":0,"k":[58.742,58.742],"ix":2},"p":{"a":0,"k":[0,0],"ix":3},"r":{"a":0,"k":0,"ix":4},"nm":"Rectangle Path 1","mn":"ADBE Vector Shape - Rect","hd":false},{"ty":"fl","c":{"a":0,"k":[1,0,0,1],"ix":4},"o":{"a":0,"k":100,"ix":5},"r":1,"bm":0,"nm":"Fill 1","mn":"ADBE Vector Graphic - Fill","hd":false},{"ty":"tr","p":{"a":0,"k":[0,0],"ix":2},"a":{"a":0,"k":[0,0],"ix":1},"s":{"a":0,"k":[100,100],"ix":3},"r":{"a":0,"k":0,"ix":6},"o":{"a":0,"k":100,"ix":7},"sk":{"a":0,"k":0,"ix":4},"sa":{"a":0,"k":0,"ix":5},"nm":"Transform"}],"nm":"Rectangle 1","np":2,"cix":2,"bm":0,"ix":1,"mn":"ADBE Vector Group","hd":false}],"ip":0,"op":3,"st":0,"ct":1,"bm":0}],"markers":[]}

example/assets/Tests/LargeComposition.json

@@ -0,0 +1 @@
+{"v":"5.8.1","fr":25,"ip":0,"op":2,"w":2000,"h":4000,"nm":"Comp 1","ddd":0,"assets":[],"layers":[{"ddd":0,"ind":1,"ty":4,"nm":"Shape Layer 1","sr":1,"ks":{"o":{"a":0,"k":100,"ix":11},"r":{"a":0,"k":0,"ix":10},"p":{"a":0,"k":[1000,2000,0],"ix":2,"l":2},"a":{"a":0,"k":[0,0,0],"ix":1,"l":2},"s":{"a":0,"k":[100,100,100],"ix":6,"l":2}},"ao":0,"shapes":[{"ty":"gr","it":[{"ty":"rc","d":1,"s":{"a":0,"k":[1554.562,597.062],"ix":2},"p":{"a":0,"k":[0,0],"ix":3},"r":{"a":0,"k":0,"ix":4},"nm":"Rectangle Path 1","mn":"ADBE Vector Shape - Rect","hd":false},{"ty":"fl","c":{"a":0,"k":[0.220496237278,1,0,1],"ix":4},"o":{"a":0,"k":100,"ix":5},"r":1,"bm":0,"nm":"Fill 1","mn":"ADBE Vector Graphic - Fill","hd":false},{"ty":"tr","p":{"a":0,"k":[1.281,-21.469],"ix":2},"a":{"a":0,"k":[0,0],"ix":1},"s":{"a":0,"k":[100,100],"ix":3},"r":{"a":0,"k":0,"ix":6},"o":{"a":0,"k":100,"ix":7},"sk":{"a":0,"k":0,"ix":4},"sa":{"a":0,"k":0,"ix":5},"nm":"Transform"}],"nm":"Rectangle 2","np":2,"cix":2,"bm":0,"ix":1,"mn":"ADBE Vector Group","hd":false},{"ty":"gr","it":[{"ty":"rc","d":1,"s":{"a":0,"k":[1780.188,3801.75],"ix":2},"p":{"a":0,"k":[0,0],"ix":3},"r":{"a":0,"k":0,"ix":4},"nm":"Rectangle Path 1","mn":"ADBE Vector Shape - Rect","hd":false},{"ty":"fl","c":{"a":0,"k":[0,0.116727701823,1,1],"ix":4},"o":{"a":0,"k":100,"ix":5},"r":1,"bm":0,"nm":"Fill 1","mn":"ADBE Vector Graphic - Fill","hd":false},{"ty":"tr","p":{"a":0,"k":[2.094,12.875],"ix":2},"a":{"a":0,"k":[0,0],"ix":1},"s":{"a":0,"k":[100,100],"ix":3},"r":{"a":0,"k":0,"ix":6},"o":{"a":0,"k":100,"ix":7},"sk":{"a":0,"k":0,"ix":4},"sa":{"a":0,"k":0,"ix":5},"nm":"Transform"}],"nm":"Rectangle 1","np":2,"cix":2,"bm":0,"ix":2,"mn":"ADBE Vector Group","hd":false}],"ip":0,"op":2,"st":0,"bm":0},{"ddd":0,"ind":2,"ty":1,"nm":"Red Solid 1","sr":1,"ks":{"o":{"a":0,"k":100,"ix":11},"r":{"a":0,"k":0,"ix":10},"p":{"a":0,"k":[1000,2000,0],"ix":2,"l":2},"a":{"a":0,"k":[1000,2000,0],"ix":1,"l":2},"s":{"a":0,"k":[100,100,100],"ix":6,"l":2}},"ao":0,"sw":2000,"sh":4000,"sc":"#ff0000","ip":0,"op":2,"st":0,"bm":0}],"markers":[]}

example/assets/Tests/OpacityStops.json

@@ -0,0 +1,494 @@
+{
+  "tgs": 1,
+  "v": "5.5.2",
+  "fr": 60,
+  "ip": 0,
+  "op": 180,
+  "w": 512,
+  "h": 512,
+  "nm": "02_ricl_klass - 3:00",
+  "ddd": 0,
+  "assets": [],
+  "layers": [
+    {
+      "ddd": 0,
+      "ind": 6,
+      "ty": 4,
+      "parent": 5,
+      "sr": 1,
+      "ks": {
+        "o": {
+          "a": 1,
+          "k": [
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": -105,
+              "s": [
+                0
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": -104,
+              "s": [
+                100
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": 34,
+              "s": [
+                100
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": 35,
+              "s": [
+                0
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": 75,
+              "s": [
+                0
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": 76,
+              "s": [
+                100
+              ]
+            },
+            {
+              "i": {
+                "x": [
+                  0.833
+                ],
+                "y": [
+                  0.833
+                ]
+              },
+              "o": {
+                "x": [
+                  0.167
+                ],
+                "y": [
+                  0.167
+                ]
+              },
+              "t": 214,
+              "s": [
+                100
+              ]
+            },
+            {
+              "t": 215,
+              "s": [
+                0
+              ]
+            }
+          ]
+        },
+        "p": {
+          "a": 0,
+          "k": [
+            0,
+            -0.031,
+            0
+          ]
+        },
+        "a": {
+          "a": 0,
+          "k": [
+            -87,
+            -18.182,
+            0
+          ]
+        },
+        "s": {
+          "a": 0,
+          "k": [
+            50,
+            33,
+            100
+          ]
+        }
+      },
+      "ao": 0,
+      "shapes": [
+        {
+          "ty": "gr",
+          "it": [
+            {
+              "ind": 0,
+              "ty": "sh",
+              "ks": {
+                "a": 1,
+                "k": [
+                  {
+                    "i": {
+                      "x": 0.833,
+                      "y": 0.833
+                    },
+                    "o": {
+                      "x": 0.167,
+                      "y": 0.167
+                    },
+                    "t": 213,
+                    "s": [
+                      {
+                        "i": [
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ]
+                        ],
+                        "o": [
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ],
+                          [
+                            0,
+                            0
+                          ]
+                        ],
+                        "v": [
+                          [
+                            571.25,
+                            -298.22
+                          ],
+                          [
+                            -192.5,
+                            -267.902
+                          ],
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+              "c": {
+                "k": [
+                  1,
+                  0,
+                  0,
+                  1
+                ],
+                "a": 0
+              }
+            },
+            {
+              "ty": "tr",
+              "a": {
+                "k": [
+                  0,
+                  0
+                ],
+                "a": 0
+              },
+              "p": {
+                "k": [
+                  0,
+                  0
+                ],
+                "a": 0
+              },
+              "s": {
+                "k": [
+                  100,
+                  100
+                ],
+                "a": 0
+              },
+              "r": {
+                "k": 0,
+                "a": 0
+              },
+              "o": {
+                "k": 100,
+                "a": 0
+              },
+              "sk": {
+                "k": 0,
+                "a": 0
+              },
+              "sa": {
+                "k": 0,
+                "a": 0
+              }
+            }
+          ]
+        },
+        {
+          "ty": "tm",
+          "s": {
+            "k": 0,
+            "a": 0
+          },
+          "e": {
+            "k": 50,
+            "a": 0
+          },
+          "o": {
+            "a": 1,
+            "k": [
+              {
+                "t": 0,
+                "i": {
+                  "x": [
+                    1
+                  ],
+                  "y": [
+                    1
+                  ]
+                },
+                "o": {
+                  "x": [
+                    0
+                  ],
+                  "y": [
+                    0
+                  ]
+                },
+                "s": [
+                  0
+                ],
+                "e": [
+                  360
+                ]
+              },
+              {
+                "t": 180,
+                "s": [
+                  360
+                ]
+              }
+            ]
+          }
+        }
+      ]
+    }
+  ],
+  "v": "5.5.2",
+  "fr": 60,
+  "ip": 0,
+  "op": 180,
+  "w": 968,
+  "h": 1090,
+  "ddd": 0,
+  "assets": []
+}

example/lib/examples/alert_dialog.dart

@@ -5,7 +5,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const App());
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/animate_no_repeat.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/animation_controller.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();

example/lib/examples/animation_full_control.dart

@@ -12,7 +12,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();

example/lib/examples/blur.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/cache.dart

@@ -0,0 +1,59 @@
+import 'package:flutter/material.dart';
+import 'package:lottie/lottie.dart';
+
+void main() => runApp(const App());
+
+class App extends StatelessWidget {
+  const App({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(body: _Page()),
+    );
+  }
+}
+
+class _Page extends StatefulWidget {
+  @override
+  __PageState createState() => __PageState();
+}
+
+class __PageState extends State<_Page> {
+  var _animationKey = UniqueKey();
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        Lottie.network(
+          'https://assets10.lottiefiles.com/datafiles/QeC7XD39x4C1CIj/data.json',
+          key: _animationKey,
+          fit: BoxFit.contain,
+          width: 200,
+          height: 200,
+        ),
+        ElevatedButton(
+          onPressed: () {
+            Lottie.cache.clear();
+            Lottie.cache.maximumSize = 10;
+          },
+          child: const Text('Clear cache'),
+        ),
+        ElevatedButton(
+          onPressed: () {
+            setState(() {
+              _animationKey = UniqueKey();
+            });
+          },
+          child: const Text('Recreate animation'),
+        ),
+      ],
+    );
+  }
+}

example/lib/examples/custom_draw.dart

@@ -5,7 +5,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -18,7 +18,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyWidget extends StatefulWidget {
-  const MyWidget({Key? key}) : super(key: key);
+  const MyWidget({super.key});
 
   @override
   State<MyWidget> createState() => _MyWidgetState();
@@ -60,7 +60,7 @@ class _MyWidgetState extends State<MyWidget> {
 class CustomDrawer extends StatelessWidget {
   final LottieComposition composition;
 
-  const CustomDrawer(this.composition, {Key? key}) : super(key: key);
+  const CustomDrawer(this.composition, {super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/custom_load.dart

@@ -1,11 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
 import 'package:lottie/lottie.dart';
 
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -19,7 +18,7 @@ class MyApp extends StatelessWidget {
 
 //--- example
 class MyWidget extends StatefulWidget {
-  const MyWidget({Key? key}) : super(key: key);
+  const MyWidget({super.key});
 
   @override
   State<MyWidget> createState() => _MyWidgetState();
@@ -32,12 +31,7 @@ class _MyWidgetState extends State<MyWidget> {
   void initState() {
     super.initState();
 
-    _composition = _loadComposition();
-  }
-
-  Future<LottieComposition> _loadComposition() async {
-    var assetData = await rootBundle.load('assets/LottieLogo1.json');
-    return await LottieComposition.fromByteData(assetData);
+    _composition = AssetLottie('assets/LottieLogo1.json').load();
   }
 
   @override

example/lib/examples/drop_shadow.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/dynamic_properties.dart

@@ -7,7 +7,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   State<App> createState() => _AppState();

example/lib/examples/dynamic_text.dart

@@ -7,7 +7,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   State<App> createState() => _AppState();

example/lib/examples/error_builder.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/examples.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/hide_after_complete.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   State<App> createState() => _AppState();

example/lib/examples/markers.dart

@@ -9,7 +9,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   State<App> createState() => _AppState();
@@ -48,7 +48,7 @@ class _AppState extends State<App> with TickerProviderStateMixin {
 class _LottieDetails extends StatefulWidget {
   final LottieComposition composition;
 
-  const _LottieDetails(this.composition, {Key? key}) : super(key: key);
+  const _LottieDetails(this.composition);
 
   @override
   _LottieDetailsState createState() => _LottieDetailsState();

example/lib/examples/repeat.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();

example/lib/examples/run_once.dart

@@ -12,7 +12,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   State<App> createState() => _AppState();

example/lib/examples/save_frames.dart

@@ -10,7 +10,7 @@ import 'package:path_provider/path_provider.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();

example/lib/examples/simple_dynamic_properties.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/main.dart

@@ -4,7 +4,7 @@ import 'package:lottie/lottie.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/main_app.dart

@@ -14,7 +14,7 @@ void main() {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -24,37 +24,37 @@ class App extends StatelessWidget {
         appBar: AppBar(
           title: const Text('Lottie Flutter'),
         ),
-        body: Scrollbar(
-          child: GridView.builder(
-            itemCount: files.length,
-            gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-                crossAxisCount: 4),
-            itemBuilder: (context, index) {
-              var assetName = files[index];
-              return GestureDetector(
-                onTap: () {
-                  Navigator.push(
-                      context,
-                      MaterialPageRoute<void>(
-                          builder: (context) => Detail(assetName)));
-                },
-                child: _Item(
-                  child: Lottie.asset(
-                    assetName,
-                    onWarning: (w) => _logger.info('$assetName - $w'),
-                    frameBuilder: (context, child, composition) {
-                      return AnimatedOpacity(
-                        opacity: composition == null ? 0 : 1,
-                        duration: const Duration(seconds: 1),
-                        curve: Curves.easeOut,
-                        child: child,
-                      );
-                    },
-                  ),
+        body: GridView.builder(
+          primary: true,
+          itemCount: files.length,
+          gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+              crossAxisCount: 4),
+          itemBuilder: (context, index) {
+            var assetName = files[index];
+            return GestureDetector(
+              onTap: () {
+                Navigator.push(
+                    context,
+                    MaterialPageRoute<void>(
+                        builder: (context) => Detail(assetName)));
+              },
+              child: _Item(
+                child: Lottie.asset(
+                  assetName,
+                  fit: BoxFit.contain,
+                  onWarning: (w) => _logger.info('$assetName - $w'),
+                  frameBuilder: (context, child, composition) {
+                    return AnimatedOpacity(
+                      opacity: composition == null ? 0 : 1,
+                      duration: const Duration(seconds: 1),
+                      curve: Curves.easeOut,
+                      child: child,
+                    );
+                  },
                 ),
-              );
-            },
-          ),
+              ),
+            );
+          },
         ),
       ),
     );
@@ -64,7 +64,7 @@ class App extends StatelessWidget {
 class _Item extends StatelessWidget {
   final Widget child;
 
-  const _Item({Key? key, required this.child}) : super(key: key);
+  const _Item({required this.child});
 
   @override
   Widget build(BuildContext context) {
@@ -89,7 +89,7 @@ class _Item extends StatelessWidget {
 class Detail extends StatefulWidget {
   final String assetName;
 
-  const Detail(this.assetName, {Key? key}) : super(key: key);
+  const Detail(this.assetName, {super.key});
 
   @override
   State<Detail> createState() => _DetailState();

example/lib/sizing_example.dart

@@ -13,7 +13,7 @@ void main() async {
 class App extends StatelessWidget {
   final LottieComposition composition;
 
-  const App({Key? key, required this.composition}) : super(key: key);
+  const App({super.key, required this.composition});
 
   @override
   Widget build(BuildContext context) {
@@ -103,8 +103,7 @@ class _Lottie extends StatefulWidget {
   final AlignmentGeometry? alignment;
 
   const _Lottie(this.composition,
-      {Key? key, this.width, this.height, this.fit, this.alignment})
-      : super(key: key);
+      {this.width, this.height, this.fit, this.alignment});
 
   @override
   __LottieState createState() => __LottieState();

example/lib/src/all_files.g.dart

@@ -43,18 +43,32 @@ final files = [
   'assets/Tests/Airbnb.zip',
   'assets/Tests/Airbnb400.zip',
   'assets/Tests/Airbnb800.zip',
+  'assets/Tests/AnimatedShadow.json',
+  'assets/Tests/BeyondBounds.json',
+  'assets/Tests/BoxPosition.json',
   'assets/Tests/CheckSwitch.json',
   'assets/Tests/DifferentPointsCount.json',
   'assets/Tests/DynamicGradient.json',
   'assets/Tests/DynamicText.json',
+  'assets/Tests/EditedColor.json',
   'assets/Tests/EllipseDirection.json',
+  'assets/Tests/EmbeddedFont.zip',
   'assets/Tests/EndFrame.json',
   'assets/Tests/Fill.json',
+  'assets/Tests/FillBlur.json',
   'assets/Tests/Font_Text_Justification_Translate_Scale_Rotation_Test.json',
   'assets/Tests/Frame.json',
+  'assets/Tests/Framerate.json',
   'assets/Tests/GradientFill.json',
+  'assets/Tests/GradientFillBlur.json',
+  'assets/Tests/GradientOneColor.json',
+  'assets/Tests/GradientOpacityInterpolation.json',
+  'assets/Tests/GradientStrokeBlur.json',
+  'assets/Tests/Heart.json',
+  'assets/Tests/InterpolateBetweenOpacityStops.json',
   'assets/Tests/InterpolatorLoopBack.json',
   'assets/Tests/KeyframeTypes.json',
+  'assets/Tests/LargeComposition.json',
   'assets/Tests/Laugh4.json',
   'assets/Tests/LoopPlayOnce.json',
   'assets/Tests/Marker.json',
@@ -65,39 +79,66 @@ final files = [
   'assets/Tests/MatteTimeStretchLine.json',
   'assets/Tests/MatteTimeStretchScan.json',
   'assets/Tests/MiterLimit.json',
+  'assets/Tests/Multiline.json',
+  'assets/Tests/OpacityStops.json',
   'assets/Tests/OverlapShapeWithOpacity.json',
   'assets/Tests/Parenting.json',
+  'assets/Tests/PrecompBlur.json',
+  'assets/Tests/PrecompBlurDecimapPrecompSize.json',
   'assets/Tests/Precomps.json',
   'assets/Tests/RGB.json',
   'assets/Tests/RGBMarker.json',
+  'assets/Tests/Rect1.json',
+  'assets/Tests/Rect3.json',
+  'assets/Tests/Rect4.json',
+  'assets/Tests/Rect5.json',
+  'assets/Tests/Rect6.json',
+  'assets/Tests/Rect7.json',
+  'assets/Tests/Rect8.json',
+  'assets/Tests/Rect9.json',
   'assets/Tests/Remap.json',
   'assets/Tests/Repeater.json',
+  'assets/Tests/ReversedStar.json',
+  'assets/Tests/RoundedCorners.json',
+  'assets/Tests/RoundedWithAlreadyRoundedCorners.json',
   'assets/Tests/Scale0.json',
   'assets/Tests/ShapeTypes.json',
   'assets/Tests/Shapes.json',
   'assets/Tests/Skew.json',
   'assets/Tests/SolidLayerTransform.json',
   'assets/Tests/SplitDimensions.json',
+  'assets/Tests/SplitPathTransform.json',
   'assets/Tests/Squares.json',
   'assets/Tests/StarSkew.json',
   'assets/Tests/StartEndFrame.json',
+  'assets/Tests/StaticShadow.json',
   'assets/Tests/Stroke.json',
+  'assets/Tests/StrokeBlur.json',
   'assets/Tests/TelegramAlphaCompat.json',
   'assets/Tests/Text.json',
   'assets/Tests/TextBaseline.json',
+  'assets/Tests/TextWithPsCenter.json',
+  'assets/Tests/TextWithPsLeft.json',
   'assets/Tests/Text_Justification_Translate_Scale_Rotation_Text.json',
+  'assets/Tests/TgsWithoutOpacity.json',
+  'assets/Tests/Thumb.json',
   'assets/Tests/TimeRemapAndStartOffset.json',
   'assets/Tests/TimeStretch.json',
+  'assets/Tests/TimeStretchAndStartOffset.json',
   'assets/Tests/TimeStretchMask.json',
   'assets/Tests/TimeStretchPrecomp.json',
+  'assets/Tests/TimeStretchPrecomp2.json',
   'assets/Tests/TrackMattes.json',
   'assets/Tests/TransformWithoutEndValues.json',
+  'assets/Tests/TrimPathWrapAround.json',
   'assets/Tests/TrimPaths.json',
   'assets/Tests/TrimPathsInsideAndOutsideGroup.json',
   'assets/Tests/WeAccept.json',
   'assets/Tests/WeAcceptInlineImage.json',
+  'assets/Tests/ZipInlineImage.zip',
   'assets/Tests/adrock.json',
   'assets/Tests/adrock_converted.json',
+  'assets/Tests/anim_jpg.zip',
   'assets/Tests/august_view_pulse.zip',
   'assets/Tests/bm.json',
   'assets/Tests/bm_converted.json',
@@ -105,8 +146,11 @@ final files = [
   'assets/Tests/catrim_converted.json',
   'assets/Tests/dalek.json',
   'assets/Tests/dalek_converted.json',
+  'assets/Tests/exported_with_flow.json',
   'assets/Tests/hd.json',
   'assets/Tests/map.zip',
+  'assets/Tests/rect2.json',
+  'assets/Tests/wile.json',
   'assets/TwitterHeartButton.json',
   'assets/battery_optimizations.json',
   'assets/bluetoothscanning.json',
@@ -221,6 +265,7 @@ final files = [
   'assets/lottiefiles/la_calavera.json',
   'assets/lottiefiles/landing_page.json',
   'assets/lottiefiles/lego_loader.json',
+  'assets/lottiefiles/lf20_fteywrno.json',
   'assets/lottiefiles/light.json',
   'assets/lottiefiles/lightsaber.json',
   'assets/lottiefiles/little_girl_jumping_-_loader.json',

example/lib/tests/airbnb.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {

example/lib/tests/we_accept.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {

example/linux/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}

example/linux/flutter/generated_plugin_registrant.h

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_

example/linux/flutter/generated_plugins.cmake

@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

example/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,7 +5,7 @@
 import FlutterMacOS
 import Foundation
 
-import path_provider_macos
+import path_provider_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))

example/macos/Podfile

@@ -1,4 +1,4 @@
-platform :osx, '10.11'
+platform :osx, '10.14'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

example/macos/Podfile.lock

@@ -1,22 +1,23 @@
 PODS:
   - FlutterMacOS (1.0.0)
-  - path_provider_macos (0.0.1):
+  - path_provider_foundation (0.0.1):
+    - Flutter
     - FlutterMacOS
 
 DEPENDENCIES:
   - FlutterMacOS (from `Flutter/ephemeral`)
-  - path_provider_macos (from `Flutter/ephemeral/.symlinks/plugins/path_provider_macos/macos`)
+  - path_provider_foundation (from `Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin`)
 
 EXTERNAL SOURCES:
   FlutterMacOS:
     :path: Flutter/ephemeral
-  path_provider_macos:
-    :path: Flutter/ephemeral/.symlinks/plugins/path_provider_macos/macos
+  path_provider_foundation:
+    :path: Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin
 
 SPEC CHECKSUMS:
-  FlutterMacOS: 57701585bf7de1b3fc2bb61f6378d73bbdea8424
-  path_provider_macos: 160cab0d5461f0c0e02995469a98f24bdb9a3f1f
+  FlutterMacOS: 8f6f14fa908a6fb3fba0cd85dbd81ec4b251fb24
+  path_provider_foundation: c68054786f1b4f3343858c1e1d0caaded73f0be9
 
-PODFILE CHECKSUM: 6eac6b3292e5142cfc23bdeb71848a40ec51c14c
+PODFILE CHECKSUM: 353c8bcc5d5b0994e508d035b5431cfe18c1dea7
 
-COCOAPODS: 1.11.3
+COCOAPODS: 1.12.0

example/macos/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 51;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXAggregateTarget section */
@@ -203,7 +203,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0920;
-				LastUpgradeCheck = 0930;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "The Flutter Authors";
 				TargetAttributes = {
 					33CC10EC2044A3C60003C045 = {
@@ -256,6 +256,7 @@
 /* Begin PBXShellScriptBuildPhase section */
 		3399D490228B24CF009A79C7 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
+			alwaysOutOfDate = 1;
 			buildActionMask = 2147483647;
 			files = (
 			);
@@ -320,11 +321,11 @@
 			);
 			inputPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
-				"${BUILT_PRODUCTS_DIR}/path_provider_macos/path_provider_macos.framework",
+				"${BUILT_PRODUCTS_DIR}/path_provider_foundation/path_provider_foundation.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider_macos.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider_foundation.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -405,7 +406,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -488,7 +489,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -535,7 +536,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;

example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1000"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

example/pubspec.lock

@@ -5,79 +5,90 @@ packages:
     dependency: transitive
     description:
       name: archive
-      url: "https://pub.dartlang.org"
+      sha256: d6347d54a2d8028e0437e3c099f66fdb8ae02c4720c1e7534c9f24c10351f85d
+      url: "https://pub.dev"
     source: hosted
-    version: "3.3.1"
+    version: "3.3.6"
   async:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.dartlang.org"
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.8.2"
+    version: "2.11.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.dartlang.org"
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.1"
+    version: "1.3.0"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.dartlang.org"
+      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.16.0"
+    version: "1.17.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
   crypto:
     dependency: transitive
     description:
       name: crypto
-      url: "https://pub.dartlang.org"
+      sha256: aa274aa7774f8964e4f4f38cc994db7b6158dd36e9187aaceaddc994b35c6c67
+      url: "https://pub.dev"
     source: hosted
     version: "3.0.2"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.dartlang.org"
+      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   ffi:
     dependency: transitive
     description:
       name: ffi
-      url: "https://pub.dartlang.org"
+      sha256: a38574032c5f1dd06c4aee541789906c12ccaab8ba01446e800d9c5b79c4a978
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   file:
     dependency: transitive
     description:
       name: file
-      url: "https://pub.dartlang.org"
+      sha256: "1b92bec4fc2a72f59a8e15af5f52cd441e4a7860b49499d69dfa817af20e925d"
+      url: "https://pub.dev"
     source: hosted
-    version: "6.1.2"
+    version: "6.1.4"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -87,14 +98,16 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_colorpicker
-      url: "https://pub.dartlang.org"
+      sha256: "458a6ed8ea480eb16ff892aedb4b7092b2804affd7e046591fb03127e8d8ef8b"
+      url: "https://pub.dev"
     source: hosted
     version: "1.0.3"
   flutter_lints:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      url: "https://pub.dartlang.org"
+      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
+      url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
   flutter_test:
@@ -106,140 +119,167 @@ packages:
     dependency: "direct dev"
     description:
       name: golden_toolkit
-      url: "https://pub.dartlang.org"
+      sha256: "8f74adab33154fe7b731395782797021f97d2edc52f7bfb85ff4f1b5c4a215f0"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.13.0"
+    version: "0.15.0"
   http:
     dependency: "direct main"
     description:
       name: http
-      url: "https://pub.dartlang.org"
+      sha256: "6aa2946395183537c8b880962d935877325d6a09a2867c3970c05c0fed6ac482"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.13.4"
+    version: "0.13.5"
   http_parser:
     dependency: transitive
     description:
       name: http_parser
-      url: "https://pub.dartlang.org"
+      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      url: "https://pub.dev"
     source: hosted
-    version: "4.0.1"
+    version: "4.0.2"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.7"
   lints:
     dependency: transitive
     description:
       name: lints
-      url: "https://pub.dartlang.org"
+      sha256: "5e4a9cd06d447758280a8ac2405101e0e2094d2a1dbdd3756aec3fe7775ba593"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.0.0"
+    version: "2.0.1"
   logging:
     dependency: "direct main"
     description:
       name: logging
-      url: "https://pub.dartlang.org"
+      sha256: "04094f2eb032cbb06c6f6e8d3607edcfcb0455e2bb6cbc010cb01171dcb64e6d"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.0.2"
+    version: "1.1.1"
   lottie:
     dependency: "direct main"
     description:
       path: ".."
       relative: true
     source: path
-    version: "1.4.2"
+    version: "2.3.2"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.dartlang.org"
+      sha256: "6501fbd55da300384b768785b83e5ce66991266cec21af89ab9ae7f5ce1c4cbb"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.15"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://pub.dartlang.org"
+      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      url: "https://pub.dev"
     source: hosted
-    version: "0.1.4"
+    version: "0.2.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.7.0"
+    version: "1.9.1"
   path:
     dependency: "direct main"
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.3"
   path_provider:
     dependency: "direct main"
     description:
       name: path_provider
-      url: "https://pub.dartlang.org"
+      sha256: c7edf82217d4b2952b2129a61d3ad60f1075b9299e629e149a8d2e39c2e6aad4
+      url: "https://pub.dev"
     source: hosted
-    version: "2.0.11"
+    version: "2.0.14"
   path_provider_android:
     dependency: transitive
     description:
       name: path_provider_android
-      url: "https://pub.dartlang.org"
+      sha256: "019f18c9c10ae370b08dce1f3e3b73bc9f58e7f087bb5e921f06529438ac0ae7"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.0.16"
-  path_provider_ios:
+    version: "2.0.24"
+  path_provider_foundation:
     dependency: transitive
     description:
-      name: path_provider_ios
-      url: "https://pub.dartlang.org"
+      name: path_provider_foundation
+      sha256: "818b2dc38b0f178e0ea3f7cf3b28146faab11375985d815942a68eee11c2d0f7"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.0.10"
+    version: "2.2.1"
   path_provider_linux:
     dependency: transitive
     description:
       name: path_provider_linux
-      url: "https://pub.dartlang.org"
+      sha256: "2ae08f2216225427e64ad224a24354221c2c7907e448e6e0e8b57b1eb9f10ad1"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.7"
-  path_provider_macos:
-    dependency: transitive
-    description:
-      name: path_provider_macos
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.6"
+    version: "2.1.10"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
-      url: "https://pub.dartlang.org"
+      sha256: "57585299a729335f1298b43245842678cb9f43a6310351b18fb577d6e33165ec"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.0.4"
+    version: "2.0.6"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
-      url: "https://pub.dartlang.org"
+      sha256: f53720498d5a543f9607db4b0e997c4b5438884de25b0f73098cc2671a51b130
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.5"
   platform:
     dependency: transitive
     description:
       name: platform
-      url: "https://pub.dartlang.org"
+      sha256: "4a451831508d7d6ca779f7ac6e212b4023dd5a7d08a27a63da33756410e32b76"
+      url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
-      url: "https://pub.dartlang.org"
+      sha256: "6a2128648c854906c53fa8e33986fc0247a1116122f9534dd20e3ab9e16a32bc"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.4"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      sha256: c3120a968135aead39699267f4c74bc9a08e4e909e86bc1b0af5bfd78691123c
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.7.2"
   process:
     dependency: transitive
     description:
       name: process
-      url: "https://pub.dartlang.org"
+      sha256: "53fd8db9cec1d37b0574e12f07520d582019cb6c44abf5479a01505099a34a09"
+      url: "https://pub.dev"
     source: hosted
     version: "4.2.4"
   sky_engine:
@@ -251,72 +291,82 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      url: "https://pub.dev"
     source: hosted
-    version: "1.8.2"
+    version: "1.9.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.dartlang.org"
+      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.dartlang.org"
+      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.dartlang.org"
+      sha256: eb6ac1540b26de412b3403a163d919ba86f6a973fe6cc50ae3541b80092fdcfb
+      url: "https://pub.dev"
     source: hosted
-    version: "0.4.9"
+    version: "0.5.1"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
-      url: "https://pub.dartlang.org"
+      sha256: "26f87ade979c47a150c9eaab93ccd2bebe70a27dc0b4b29517f2904f04eb11a5"
+      url: "https://pub.dev"
     source: hosted
     version: "1.3.1"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.4"
   win32:
     dependency: transitive
     description:
       name: win32
-      url: "https://pub.dartlang.org"
+      sha256: c9ebe7ee4ab0c2194e65d3a07d8c54c5d00bb001b76081c4a04cdb8448b59e46
+      url: "https://pub.dev"
     source: hosted
-    version: "2.7.0"
+    version: "3.1.3"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
-      url: "https://pub.dartlang.org"
+      sha256: ee1505df1426458f7f60aac270645098d318a8b4766d85fde75f76f2e21807d1
+      url: "https://pub.dev"
     source: hosted
-    version: "0.2.0+1"
+    version: "1.0.0"
 sdks:
-  dart: ">=2.17.0 <3.0.0"
-  flutter: ">=3.0.0"
+  dart: ">=3.0.0-0 <4.0.0"
+  flutter: ">=3.3.0"

example/pubspec.yaml

@@ -3,7 +3,7 @@ description: A sample app for the Lottie player
 publish_to: none
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.18.0 <3.0.0"
 
 dependencies:
   flutter:

lib/lottie.dart

@@ -10,7 +10,7 @@ export 'src/options.dart' show LottieOptions;
 export 'src/providers/asset_provider.dart' show AssetLottie;
 export 'src/providers/file_provider.dart' show FileLottie;
 export 'src/providers/load_image.dart' show LottieImageProviderFactory;
-export 'src/providers/lottie_provider.dart' show LottieProvider;
+export 'src/providers/lottie_provider.dart' show LottieProvider, LottieCache;
 export 'src/providers/memory_provider.dart' show MemoryLottie;
 export 'src/providers/network_provider.dart' show NetworkLottie;
 export 'src/raw_lottie.dart' show RawLottie;

lib/src/animation/content/content_group.dart

@@ -52,8 +52,8 @@ class ContentGroup implements DrawingContent, PathContent, KeyPathElement {
   List<PathContent>? _pathContents;
   TransformKeyframeAnimation? _transformAnimation;
 
-  ContentGroup(final LottieDrawable lottieDrawable, BaseLayer layer,
-      ShapeGroup shapeGroup)
+  ContentGroup(
+      LottieDrawable lottieDrawable, BaseLayer layer, ShapeGroup shapeGroup)
       : this.copy(
             lottieDrawable,
             layer,

lib/src/animation/content/gradient_stroke_content.dart

@@ -31,8 +31,8 @@ class GradientStrokeContent extends BaseStrokeContent {
   ValueCallbackKeyframeAnimation<List<Color>, List<Color>>?
       _colorCallbackAnimation;
 
-  GradientStrokeContent(final LottieDrawable lottieDrawable, BaseLayer layer,
-      GradientStroke stroke)
+  GradientStrokeContent(
+      LottieDrawable lottieDrawable, BaseLayer layer, GradientStroke stroke)
       : name = stroke.name,
         _type = stroke.gradientType,
         _hidden = stroke.hidden,

lib/src/animation/content/rounded_corners_content.dart

@@ -6,6 +6,7 @@ import '../../model/content/shape_data.dart';
 import '../../model/cubic_curve_data.dart';
 import '../../model/layer/base_layer.dart';
 import '../../utils.dart';
+import '../../utils/misc.dart';
 import '../keyframe/base_keyframe_animation.dart';
 import 'content.dart';
 import 'shape_modifier_content.dart';
@@ -168,12 +169,12 @@ class RoundedCornersContent implements ShapeModifierContent {
         var previousCurveData = modifiedCurves[
             floorMod(modifiedCurvesIndex - 1, modifiedCurves.length)];
         var currentCurveData = modifiedCurves[modifiedCurvesIndex];
-        previousCurveData.controlPoint2 =
-            Offset(previousCurve.vertex.dx, previousCurve.vertex.dy);
+        previousCurveData.controlPoint2 = Offset(
+            previousCurve.controlPoint2.dx, previousCurve.controlPoint2.dy);
         previousCurveData.vertex =
             Offset(previousCurve.vertex.dx, previousCurve.vertex.dy);
-        currentCurveData.controlPoint1 =
-            Offset(startingCurve.vertex.dx, startingCurve.vertex.dy);
+        currentCurveData.controlPoint1 = Offset(
+            startingCurve.controlPoint1.dx, startingCurve.controlPoint1.dy);
         modifiedCurvesIndex++;
       }
     }
@@ -219,18 +220,5 @@ class RoundedCornersContent implements ShapeModifierContent {
     return shapeData;
   }
 
-  /// Copied from the API 24+ AOSP source.
-  static int floorMod(int x, int y) {
-    return x - floorDiv(x, y) * y;
-  }
-
-  /// Copied from the API 24+ AOSP source.
-  static int floorDiv(int x, int y) {
-    var r = x ~/ y;
-    // if the signs are different and modulo not zero, round down
-    if ((x ^ y) < 0 && (r * y != x)) {
-      r--;
-    }
-    return r;
-  }
+  static int floorMod(int x, int y) => MiscUtils.floorModInt(x, y);
 }

lib/src/animation/content/stroke_content.dart

@@ -17,7 +17,7 @@ class StrokeContent extends BaseStrokeContent {
   BaseKeyframeAnimation<ColorFilter, ColorFilter?>? _colorFilterAnimation;
 
   StrokeContent(
-      final LottieDrawable lottieDrawable, BaseLayer layer, ShapeStroke stroke)
+      LottieDrawable lottieDrawable, BaseLayer layer, ShapeStroke stroke)
       : name = stroke.name,
         _hidden = stroke.hidden,
         _colorAnimation = stroke.color.createAnimation(),

lib/src/animation/keyframe/color_keyframe_animation.dart

@@ -4,7 +4,7 @@ import '../../value/keyframe.dart';
 import 'keyframe_animation.dart';
 
 class ColorKeyframeAnimation extends KeyframeAnimation<Color> {
-  ColorKeyframeAnimation(List<Keyframe<Color>> keyframes) : super(keyframes);
+  ColorKeyframeAnimation(super.keyframes);
 
   @override
   Color getValue(Keyframe<Color> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/double_keyframe_animation.dart

@@ -3,7 +3,7 @@ import '../../value/keyframe.dart';
 import 'keyframe_animation.dart';
 
 class DoubleKeyframeAnimation extends KeyframeAnimation<double> {
-  DoubleKeyframeAnimation(List<Keyframe<double>> keyframes) : super(keyframes);
+  DoubleKeyframeAnimation(super.keyframes);
 
   @override
   double getValue(Keyframe<double> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/integer_keyframe_animation.dart

@@ -3,7 +3,7 @@ import '../../value/keyframe.dart';
 import 'keyframe_animation.dart';
 
 class IntegerKeyframeAnimation extends KeyframeAnimation<int> {
-  IntegerKeyframeAnimation(List<Keyframe<int>> keyframes) : super(keyframes);
+  IntegerKeyframeAnimation(super.keyframes);
 
   @override
   int getValue(Keyframe<int> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/keyframe_animation.dart

@@ -1,7 +1,6 @@
-import '../../value/keyframe.dart';
 import 'base_keyframe_animation.dart';
 
 abstract class KeyframeAnimation<T extends Object>
     extends BaseKeyframeAnimation<T, T> {
-  KeyframeAnimation(List<Keyframe<T>> keyframes) : super(keyframes);
+  KeyframeAnimation(super.keyframes);
 }

lib/src/animation/keyframe/path_keyframe.dart

@@ -7,9 +7,9 @@ class PathKeyframe extends Keyframe<Offset> {
   Path? _path;
   final Keyframe<Offset> _pointKeyFrame;
 
-  PathKeyframe(LottieComposition composition, Keyframe<Offset> keyframe)
+  PathKeyframe(LottieComposition super.composition, Keyframe<Offset> keyframe)
       : _pointKeyFrame = keyframe,
-        super(composition,
+        super(
             startValue: keyframe.startValue,
             endValue: keyframe.endValue,
             interpolator: keyframe.interpolator,

lib/src/animation/keyframe/path_keyframe_animation.dart

@@ -7,7 +7,7 @@ class PathKeyframeAnimation extends KeyframeAnimation<Offset> {
   PathKeyframe? _pathMeasureKeyframe;
   late PathMetric _pathMeasure;
 
-  PathKeyframeAnimation(List<Keyframe<Offset>> keyframes) : super(keyframes);
+  PathKeyframeAnimation(super.keyframes);
 
   @override
   Offset getValue(Keyframe<Offset> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/point_keyframe_animation.dart

@@ -3,7 +3,7 @@ import '../../value/keyframe.dart';
 import 'keyframe_animation.dart';
 
 class PointKeyframeAnimation extends KeyframeAnimation<Offset> {
-  PointKeyframeAnimation(List<Keyframe<Offset>> keyframes) : super(keyframes);
+  PointKeyframeAnimation(super.keyframes);
 
   @override
   Offset getValue(Keyframe<Offset> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/shape_keyframe_animation.dart

@@ -11,8 +11,7 @@ class ShapeKeyframeAnimation extends BaseKeyframeAnimation<ShapeData, Path> {
   final Path _tempPath = PathFactory.create();
   List<ShapeModifierContent>? _shapeModifiers;
 
-  ShapeKeyframeAnimation(List<Keyframe<ShapeData>> keyframes)
-      : super(keyframes);
+  ShapeKeyframeAnimation(super.keyframes);
 
   @override
   Path getValue(Keyframe<ShapeData> keyframe, double keyframeProgress) {

lib/src/animation/keyframe/text_keyframe_animation.dart

@@ -5,8 +5,7 @@ import '../../value/lottie_value_callback.dart';
 import 'keyframe_animation.dart';
 
 class TextKeyframeAnimation extends KeyframeAnimation<DocumentData> {
-  TextKeyframeAnimation(List<Keyframe<DocumentData>> keyframes)
-      : super(keyframes);
+  TextKeyframeAnimation(super.keyframes);
 
   @override
   DocumentData getValue(
@@ -53,16 +52,19 @@ class _DocumentDataValueCallback extends LottieValueCallback<DocumentData> {
         ? frameInfo.endValue!
         : frameInfo.startValue!;
     return DocumentData(
-        text: text,
-        fontName: baseDocumentData.fontName,
-        size: baseDocumentData.size,
-        justification: baseDocumentData.justification,
-        tracking: baseDocumentData.tracking,
-        lineHeight: baseDocumentData.lineHeight,
-        baselineShift: baseDocumentData.baselineShift,
-        color: baseDocumentData.color,
-        strokeColor: baseDocumentData.strokeColor,
-        strokeWidth: baseDocumentData.strokeWidth,
-        strokeOverFill: baseDocumentData.strokeOverFill);
+      text: text,
+      fontName: baseDocumentData.fontName,
+      size: baseDocumentData.size,
+      justification: baseDocumentData.justification,
+      tracking: baseDocumentData.tracking,
+      lineHeight: baseDocumentData.lineHeight,
+      baselineShift: baseDocumentData.baselineShift,
+      color: baseDocumentData.color,
+      strokeColor: baseDocumentData.strokeColor,
+      strokeWidth: baseDocumentData.strokeWidth,
+      strokeOverFill: baseDocumentData.strokeOverFill,
+      boxPosition: baseDocumentData.boxPosition,
+      boxSize: baseDocumentData.boxSize,
+    );
   }
 }

lib/src/lottie.dart

@@ -4,6 +4,7 @@ import '../lottie.dart';
 import 'composition.dart';
 import 'l.dart';
 import 'lottie_builder.dart';
+import 'providers/lottie_provider.dart';
 
 /// A widget to display a loaded [LottieComposition].
 /// The [controller] property allows to specify a custom AnimationController that
@@ -11,8 +12,11 @@ import 'lottie_builder.dart';
 /// automatically and the behavior could be adjusted with the properties [animate],
 /// [repeat] and [reverse].
 class Lottie extends StatefulWidget {
+  /// The cache instance for recently loaded Lottie compositions.
+  static LottieCache get cache => sharedLottieCache;
+
   const Lottie({
-    Key? key,
+    super.key,
     required this.composition,
     this.controller,
     this.width,
@@ -30,8 +34,7 @@ class Lottie extends StatefulWidget {
   })  : animate = animate ?? true,
         reverse = reverse ?? false,
         repeat = repeat ?? true,
-        addRepaintBoundary = addRepaintBoundary ?? true,
-        super(key: key);
+        addRepaintBoundary = addRepaintBoundary ?? true;
 
   /// Creates a widget that displays an [LottieComposition] obtained from an [AssetBundle].
   static LottieBuilder asset(

lib/src/lottie_builder.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:typed_data';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 import 'composition.dart';
@@ -33,16 +32,16 @@ typedef LottieErrorWidgetBuilder = Widget Function(
 /// Several constructors are provided for the various ways that a Lottie file
 /// can be provided:
 ///
-///  * [new Lottie], for obtaining a composition from a [LottieProvider].
-///  * [new Lottie.asset], for obtaining a Lottie file from an [AssetBundle]
+///  * [Lottie], for obtaining a composition from a [LottieProvider].
+///  * [Lottie.asset], for obtaining a Lottie file from an [AssetBundle]
 ///    using a key.
-///  * [new Lottie.network], for obtaining a lottie file from a URL.
-///  * [new Lottie.file], for obtaining a lottie file from a [File].
-///  * [new Lottie.memory], for obtaining a lottie file from a [Uint8List].
+///  * [Lottie.network], for obtaining a lottie file from a URL.
+///  * [Lottie.file], for obtaining a lottie file from a [File].
+///  * [Lottie.memory], for obtaining a lottie file from a [Uint8List].
 ///
 class LottieBuilder extends StatefulWidget {
   const LottieBuilder({
-    Key? key,
+    super.key,
     required this.lottie,
     this.controller,
     this.frameRate,
@@ -61,7 +60,7 @@ class LottieBuilder extends StatefulWidget {
     this.addRepaintBoundary,
     this.filterQuality,
     this.onWarning,
-  }) : super(key: key);
+  });
 
   /// Creates a widget that displays an [LottieComposition] obtained from the network.
   LottieBuilder.network(
@@ -76,7 +75,7 @@ class LottieBuilder extends StatefulWidget {
     this.options,
     LottieImageProviderFactory? imageProviderFactory,
     this.onLoaded,
-    Key? key,
+    super.key,
     this.frameBuilder,
     this.errorBuilder,
     this.width,
@@ -86,9 +85,8 @@ class LottieBuilder extends StatefulWidget {
     this.addRepaintBoundary,
     this.filterQuality,
     this.onWarning,
-  })  : lottie = NetworkLottie(src,
-            headers: headers, imageProviderFactory: imageProviderFactory),
-        super(key: key);
+  }) : lottie = NetworkLottie(src,
+            headers: headers, imageProviderFactory: imageProviderFactory);
 
   /// Creates a widget that displays an [LottieComposition] obtained from a [File].
   ///
@@ -111,7 +109,7 @@ class LottieBuilder extends StatefulWidget {
     this.options,
     LottieImageProviderFactory? imageProviderFactory,
     this.onLoaded,
-    Key? key,
+    super.key,
     this.frameBuilder,
     this.errorBuilder,
     this.width,
@@ -121,8 +119,7 @@ class LottieBuilder extends StatefulWidget {
     this.addRepaintBoundary,
     this.filterQuality,
     this.onWarning,
-  })  : lottie = FileLottie(file, imageProviderFactory: imageProviderFactory),
-        super(key: key);
+  }) : lottie = FileLottie(file, imageProviderFactory: imageProviderFactory);
 
   /// Creates a widget that displays an [LottieComposition] obtained from an [AssetBundle].
   LottieBuilder.asset(
@@ -136,7 +133,7 @@ class LottieBuilder extends StatefulWidget {
     this.options,
     LottieImageProviderFactory? imageProviderFactory,
     this.onLoaded,
-    Key? key,
+    super.key,
     AssetBundle? bundle,
     this.frameBuilder,
     this.errorBuilder,
@@ -148,11 +145,10 @@ class LottieBuilder extends StatefulWidget {
     this.addRepaintBoundary,
     this.filterQuality,
     this.onWarning,
-  })  : lottie = AssetLottie(name,
+  }) : lottie = AssetLottie(name,
             bundle: bundle,
             package: package,
-            imageProviderFactory: imageProviderFactory),
-        super(key: key);
+            imageProviderFactory: imageProviderFactory);
 
   /// Creates a widget that displays an [LottieComposition] obtained from a [Uint8List].
   LottieBuilder.memory(
@@ -167,7 +163,7 @@ class LottieBuilder extends StatefulWidget {
     LottieImageProviderFactory? imageProviderFactory,
     this.onLoaded,
     this.errorBuilder,
-    Key? key,
+    super.key,
     this.frameBuilder,
     this.width,
     this.height,
@@ -176,9 +172,7 @@ class LottieBuilder extends StatefulWidget {
     this.addRepaintBoundary,
     this.filterQuality,
     this.onWarning,
-  })  : lottie =
-            MemoryLottie(bytes, imageProviderFactory: imageProviderFactory),
-        super(key: key);
+  }) : lottie = MemoryLottie(bytes, imageProviderFactory: imageProviderFactory);
 
   /// The lottie animation to load.
   /// Example of providers: [AssetLottie], [NetworkLottie], [FileLottie], [MemoryLottie]
@@ -447,17 +441,22 @@ class _LottieBuilderState extends State<LottieBuilder> {
   void _load() {
     var provider = widget.lottie;
     _loadingFuture = widget.lottie.load().then((composition) {
-      if (mounted && widget.lottie == provider) {
-        var onWarning = widget.onWarning;
-        composition.onWarning = onWarning;
-        if (onWarning != null) {
-          for (var warning in composition.warnings) {
-            onWarning(warning);
+      // LottieProvier.load() can return a Synchronous future and the onLoaded
+      // callback can call setState, so we wrap it in a microtask to avoid an
+      // "!_isDirty" error.
+      scheduleMicrotask(() {
+        if (mounted && widget.lottie == provider) {
+          var onWarning = widget.onWarning;
+          composition.onWarning = onWarning;
+          if (onWarning != null) {
+            for (var warning in composition.warnings) {
+              onWarning(warning);
+            }
           }
-        }
 
-        widget.onLoaded?.call(composition);
-      }
+          widget.onLoaded?.call(composition);
+        }
+      });
 
       return composition;
     });
@@ -478,12 +477,14 @@ class _LottieBuilderState extends State<LottieBuilder> {
         }
 
         var composition = snapshot.data;
+        var animate = widget.animate;
+        animate ??= (composition?.durationFrames ?? 0) > 1.0;
 
         Widget result = Lottie(
           composition: composition,
           controller: widget.controller,
           frameRate: widget.frameRate,
-          animate: widget.animate,
+          animate: animate,
           reverse: widget.reverse,
           repeat: widget.repeat,
           delegates: widget.delegates,

lib/src/lottie_delegates.dart

@@ -5,9 +5,22 @@ import 'lottie_drawable.dart';
 import 'lottie_image_asset.dart';
 import 'value_delegate.dart';
 
-// TODO(xha): recognize style Bold, Medium, Regular, SemiBold, etc...
-TextStyle defaultTextStyleDelegate(LottieFontStyle font) =>
-    TextStyle(fontFamily: font.fontFamily);
+TextStyle defaultTextStyleDelegate(LottieFontStyle font) {
+  var style = font.style.toLowerCase();
+
+  var fontStyle = style.contains('italic') ? FontStyle.italic : null;
+
+  FontWeight? fontWeight;
+  if (style.contains('semibold') || style.contains('semi bold')) {
+    fontWeight = FontWeight.w600;
+  } else if (style.contains('bold')) {
+    fontWeight = FontWeight.bold;
+  }
+  return TextStyle(
+      fontFamily: font.fontFamily,
+      fontStyle: fontStyle,
+      fontWeight: fontWeight);
+}
 
 @immutable
 class LottieDelegates {
@@ -82,5 +95,5 @@ class LottieDelegates {
           values == other.values;
 
   @override
-  int get hashCode => hashValues(text, textStyle, values);
+  int get hashCode => Object.hash(text, textStyle, values);
 }

lib/src/model/animatable/animatable_color_value.dart

@@ -1,11 +1,9 @@
 import 'dart:ui';
 import '../../animation/keyframe/color_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableColorValue extends BaseAnimatableValue<Color, Color> {
-  AnimatableColorValue.fromKeyframes(List<Keyframe<Color>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableColorValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   ColorKeyframeAnimation createAnimation() {

lib/src/model/animatable/animatable_double_value.dart

@@ -1,12 +1,10 @@
 import '../../animation/keyframe/double_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableDoubleValue extends BaseAnimatableValue<double, double> {
   AnimatableDoubleValue() : super.fromValue(0.0);
 
-  AnimatableDoubleValue.fromKeyframes(List<Keyframe<double>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableDoubleValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   DoubleKeyframeAnimation createAnimation() {

lib/src/model/animatable/animatable_gradient_color_value.dart

@@ -7,7 +7,51 @@ class AnimatableGradientColorValue
     extends BaseAnimatableValue<GradientColor, GradientColor> {
   AnimatableGradientColorValue.fromKeyframes(
       List<Keyframe<GradientColor>> keyframes)
-      : super.fromKeyframes(keyframes);
+      : super.fromKeyframes(_ensureInterpolatableKeyframes(keyframes));
+
+  static List<Keyframe<GradientColor>> _ensureInterpolatableKeyframes(
+      List<Keyframe<GradientColor>> keyframes) {
+    for (var i = 0; i < keyframes.length; i++) {
+      keyframes[i] = _ensureInterpolatableKeyframe(keyframes[i]);
+    }
+    return keyframes;
+  }
+
+  static Keyframe<GradientColor> _ensureInterpolatableKeyframe(
+      Keyframe<GradientColor> keyframe) {
+    var startValue = keyframe.startValue;
+    var endValue = keyframe.endValue;
+    if (startValue == null ||
+        endValue == null ||
+        startValue.positions.length == endValue.positions.length) {
+      return keyframe;
+    }
+    var mergedPositions =
+        _mergePositions(startValue.positions, endValue.positions);
+    // The start/end has opacity stops which required adding extra positions in between the existing colors.
+    return keyframe.copyWith(startValue.copyWithPositions(mergedPositions),
+        endValue.copyWithPositions(mergedPositions));
+  }
+
+  static List<double> _mergePositions(
+      List<double> startPositions, List<double> endPositions) {
+    var mergedArray =
+        List<double>.filled(startPositions.length + endPositions.length, 0);
+    mergedArray.setRange(0, startPositions.length, startPositions);
+    mergedArray.setRange(startPositions.length,
+        startPositions.length + endPositions.length, endPositions);
+    mergedArray.sort();
+    var uniqueValues = 0;
+    var lastValue = double.nan;
+    for (var i = 0; i < mergedArray.length; i++) {
+      if (mergedArray[i] != lastValue) {
+        mergedArray[uniqueValues] = mergedArray[i];
+        uniqueValues++;
+        lastValue = mergedArray[i];
+      }
+    }
+    return mergedArray.take(uniqueValues).toList();
+  }
 
   @override
   GradientColorKeyframeAnimation createAnimation() {

lib/src/model/animatable/animatable_integer_value.dart

@@ -1,13 +1,11 @@
 import '../../animation/keyframe/base_keyframe_animation.dart';
 import '../../animation/keyframe/integer_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableIntegerValue extends BaseAnimatableValue<int, int> {
   AnimatableIntegerValue() : super.fromValue(100);
 
-  AnimatableIntegerValue.fromKeyframes(List<Keyframe<int>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableIntegerValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   BaseKeyframeAnimation<int, int> createAnimation() {

lib/src/model/animatable/animatable_point_value.dart

@@ -1,11 +1,9 @@
 import 'dart:ui';
 import '../../animation/keyframe/point_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import 'base_animatable_value.dart';
 
 class AnimatablePointValue extends BaseAnimatableValue<Offset, Offset> {
-  AnimatablePointValue.fromKeyframes(List<Keyframe<Offset>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatablePointValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   PointKeyframeAnimation createAnimation() {

lib/src/model/animatable/animatable_scale_value.dart

@@ -1,16 +1,14 @@
 import 'dart:ui';
 import '../../animation/keyframe/base_keyframe_animation.dart';
 import '../../animation/keyframe/point_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableScaleValue extends BaseAnimatableValue<Offset, Offset> {
   AnimatableScaleValue.one() : this(const Offset(1, 1));
 
-  AnimatableScaleValue(Offset value) : super.fromValue(value);
+  AnimatableScaleValue(super.value) : super.fromValue();
 
-  AnimatableScaleValue.fromKeyframes(List<Keyframe<Offset>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableScaleValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   BaseKeyframeAnimation<Offset, Offset> createAnimation() {

lib/src/model/animatable/animatable_shape_value.dart

@@ -1,12 +1,10 @@
 import 'dart:ui';
 import '../../animation/keyframe/shape_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import '../content/shape_data.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableShapeValue extends BaseAnimatableValue<ShapeData, Path> {
-  AnimatableShapeValue.fromKeyframes(List<Keyframe<ShapeData>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableShapeValue.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   ShapeKeyframeAnimation createAnimation() {

lib/src/model/animatable/animatable_text_frame.dart

@@ -1,12 +1,10 @@
 import '../../animation/keyframe/text_keyframe_animation.dart';
-import '../../value/keyframe.dart';
 import '../document_data.dart';
 import 'base_animatable_value.dart';
 
 class AnimatableTextFrame
     extends BaseAnimatableValue<DocumentData, DocumentData> {
-  AnimatableTextFrame.fromKeyframes(List<Keyframe<DocumentData>> keyframes)
-      : super.fromKeyframes(keyframes);
+  AnimatableTextFrame.fromKeyframes(super.keyframes) : super.fromKeyframes();
 
   @override
   TextKeyframeAnimation createAnimation() {

lib/src/model/content/gradient_color.dart

@@ -1,4 +1,5 @@
 import 'dart:ui';
+import '../../utils/collection.dart';
 import '../../utils/gamma_evaluator.dart';
 
 class GradientColor {
@@ -21,4 +22,33 @@ class GradientColor {
           GammaEvaluator.evaluate(progress, gc1.colors[i], gc2.colors[i]);
     }
   }
+
+  GradientColor copyWithPositions(List<double> positions) {
+    var colors = List<Color>.filled(positions.length, const Color(0x00000000));
+    for (var i = 0; i < positions.length; i++) {
+      colors[i] = _getColorForPosition(positions[i]);
+    }
+    return GradientColor(positions, colors);
+  }
+
+  Color _getColorForPosition(double position) {
+    var existingIndex = binarySearch(positions, position);
+    if (existingIndex >= 0) {
+      return colors[existingIndex];
+    }
+    // binarySearch returns -insertionPoint - 1 if it is not found.
+    var insertionPoint = -(existingIndex + 1);
+    if (insertionPoint == 0) {
+      return colors[0];
+    } else if (insertionPoint == colors.length - 1) {
+      return colors[colors.length - 1];
+    }
+    var startPosition = positions[insertionPoint - 1];
+    var endPosition = positions[insertionPoint];
+    var startColor = colors[insertionPoint - 1];
+    var endColor = colors[insertionPoint];
+
+    var fraction = (position - startPosition) / (endPosition - startPosition);
+    return GammaEvaluator.evaluate(fraction, startColor, endColor);
+  }
 }

lib/src/model/document_data.dart

@@ -8,12 +8,16 @@ class DocumentData {
   final double size;
   final Justification justification;
   final int tracking;
+
+  /// Extra space in between lines. */
   final double lineHeight;
   final double baselineShift;
   final Color color;
   final Color strokeColor;
   final double strokeWidth;
   final bool strokeOverFill;
+  final Offset? boxPosition;
+  final Offset? boxSize;
 
   DocumentData({
     required this.text,
@@ -27,22 +31,27 @@ class DocumentData {
     required this.strokeColor,
     required this.strokeWidth,
     required this.strokeOverFill,
+    required this.boxPosition,
+    required this.boxSize,
   });
 
   @override
   int get hashCode {
-    return hashValues(
-        text,
-        fontName,
-        size,
-        justification.index,
-        tracking,
-        lineHeight,
-        baselineShift,
-        color,
-        strokeColor,
-        strokeWidth,
-        strokeOverFill);
+    return Object.hash(
+      text,
+      fontName,
+      size,
+      justification.index,
+      tracking,
+      lineHeight,
+      baselineShift,
+      color,
+      strokeColor,
+      strokeWidth,
+      strokeOverFill,
+      boxPosition,
+      boxSize,
+    );
   }
 
   @override
@@ -60,5 +69,7 @@ class DocumentData {
           color == other.color &&
           strokeColor == other.strokeColor &&
           strokeWidth == other.strokeWidth &&
-          strokeOverFill == other.strokeOverFill;
+          strokeOverFill == other.strokeOverFill &&
+          boxPosition == other.boxPosition &&
+          boxSize == other.boxSize;
 }

lib/src/model/font_character.dart

@@ -2,8 +2,7 @@ import 'content/shape_group.dart';
 
 class FontCharacter {
   static int hashFor(String character, String fontFamily, String style) {
-    var result = 0;
-    result = 31 * result + character.hashCode;
+    var result = character.hashCode;
     result = 31 * result + fontFamily.hashCode;
     result = 31 * result + style.hashCode;
     return result;

lib/src/model/layer/image_layer.dart

@@ -2,19 +2,16 @@ import 'dart:ui';
 import 'package:vector_math/vector_math_64.dart';
 import '../../animation/keyframe/base_keyframe_animation.dart';
 import '../../animation/keyframe/value_callback_keyframe_animation.dart';
-import '../../lottie_drawable.dart';
 import '../../lottie_property.dart';
 import '../../utils.dart';
 import '../../value/lottie_value_callback.dart';
 import 'base_layer.dart';
-import 'layer.dart';
 
 class ImageLayer extends BaseLayer {
   final Paint paint = Paint();
   BaseKeyframeAnimation<ColorFilter, ColorFilter?>? _colorFilterAnimation;
 
-  ImageLayer(LottieDrawable lottieDrawable, Layer layerModel)
-      : super(lottieDrawable, layerModel);
+  ImageLayer(super.lottieDrawable, super.layerModel);
 
   @override
   void drawLayer(Canvas canvas, Size size, Matrix4 parentMatrix,
@@ -23,7 +20,6 @@ class ImageLayer extends BaseLayer {
     if (bitmap == null) {
       return;
     }
-    var density = window.devicePixelRatio;
 
     paint.filterQuality = lottieDrawable.filterQuality ?? FilterQuality.low;
     paint.setAlpha(parentAlpha);
@@ -34,8 +30,8 @@ class ImageLayer extends BaseLayer {
     canvas.transform(parentMatrix.storage);
     var src =
         Rect.fromLTWH(0, 0, bitmap.width.toDouble(), bitmap.height.toDouble());
-    var dst = Rect.fromLTWH(
-        0, 0, bitmap.width * density, bitmap.height.toDouble() * density);
+    var dst =
+        Rect.fromLTWH(0, 0, bitmap.width.toDouble(), bitmap.height.toDouble());
     canvas.drawImageRect(bitmap, src, dst, paint);
     canvas.restore();
   }
@@ -45,8 +41,8 @@ class ImageLayer extends BaseLayer {
     var superBounds = super.getBounds(parentMatrix, applyParents: applyParents);
     var bitmap = getBitmap();
     if (bitmap != null) {
-      var bounds = Rect.fromLTWH(0, 0, bitmap.width * window.devicePixelRatio,
-          bitmap.height * window.devicePixelRatio);
+      var bounds = Rect.fromLTWH(
+          0, 0, bitmap.width.toDouble(), bitmap.height.toDouble());
       return boundsMatrix.mapRect(bounds);
     }
     return superBounds;

lib/src/model/layer/null_layer.dart

@@ -1,12 +1,9 @@
 import 'dart:ui';
 import 'package:vector_math/vector_math_64.dart';
-import '../../lottie_drawable.dart';
 import 'base_layer.dart';
-import 'layer.dart';
 
 class NullLayer extends BaseLayer {
-  NullLayer(LottieDrawable lottieDrawable, Layer layerModel)
-      : super(lottieDrawable, layerModel);
+  NullLayer(super.lottieDrawable, super.layerModel);
 
   @override
   void drawLayer(Canvas canvas, Size size, Matrix4 parentMatrix,

lib/src/model/layer/text_layer.dart

@@ -1,4 +1,3 @@
-import 'dart:ui';
 import 'package:flutter/widgets.dart';
 import '../../animation/content/content_group.dart';
 import '../../animation/keyframe/base_keyframe_animation.dart';
@@ -8,6 +7,7 @@ import '../../composition.dart';
 import '../../lottie_drawable.dart';
 import '../../lottie_property.dart';
 import '../../utils.dart';
+import '../../utils/characters.dart';
 import '../../value/lottie_value_callback.dart';
 import '../document_data.dart';
 import '../font.dart';
@@ -22,6 +22,9 @@ class TextLayer extends BaseLayer {
   final _fillPaint = Paint()..style = PaintingStyle.fill;
   final _strokePaint = Paint()..style = PaintingStyle.stroke;
   final _contentsForCharacter = <FontCharacter, List<ContentGroup>>{};
+
+  /// If this is paragraph text, one line may wrap depending on the size of the document data box.
+  final _textSubLines = <_TextSubLine>[];
   final TextKeyframeAnimation _textAnimation;
   final LottieComposition _composition;
 
@@ -89,18 +92,26 @@ class TextLayer extends BaseLayer {
   @override
   void drawLayer(Canvas canvas, Size size, Matrix4 parentMatrix,
       {required int parentAlpha}) {
-    canvas.save();
-    if (!lottieDrawable.useTextGlyphs) {
-      canvas.transform(parentMatrix.storage);
-    }
     var documentData = _textAnimation.value;
     var font = _composition.fonts[documentData.fontName];
     if (font == null) {
-      // Something is wrong.
-      canvas.restore();
       return;
     }
+    canvas.save();
+    canvas.transform(parentMatrix.storage);
 
+    _configurePaint(documentData, parentMatrix);
+
+    if (lottieDrawable.useTextGlyphs) {
+      _drawTextWithGlyphs(documentData, parentMatrix, font, canvas);
+    } else {
+      _drawTextWithFont(documentData, font, canvas);
+    }
+
+    canvas.restore();
+  }
+
+  void _configurePaint(DocumentData documentData, Matrix4 parentMatrix) {
     Color fillPaintColor;
     if (_colorCallbackAnimation != null) {
       fillPaintColor = _colorCallbackAnimation!.value;
@@ -131,21 +142,11 @@ class TextLayer extends BaseLayer {
     } else if (_strokeWidthAnimation != null) {
       _strokePaint.strokeWidth = _strokeWidthAnimation!.value;
     } else {
-      var parentScale = parentMatrix.getScale();
-      _strokePaint.strokeWidth =
-          documentData.strokeWidth * window.devicePixelRatio * parentScale;
+      _strokePaint.strokeWidth = documentData.strokeWidth;
     }
-
-    if (lottieDrawable.useTextGlyphs) {
-      _drawTextGlyphs(documentData, parentMatrix, font, canvas);
-    } else {
-      _drawTextWithFont(documentData, font, parentMatrix, canvas);
-    }
-
-    canvas.restore();
   }
 
-  void _drawTextGlyphs(DocumentData documentData, Matrix4 parentMatrix,
+  void _drawTextWithGlyphs(DocumentData documentData, Matrix4 parentMatrix,
       Font font, Canvas canvas) {
     double textSize;
     if (_textSizeCallbackAnimation != null) {
@@ -160,70 +161,54 @@ class TextLayer extends BaseLayer {
 
     var text = documentData.text;
 
-    // Line height
-    var lineHeight = documentData.lineHeight * window.devicePixelRatio;
-
     // Split full text in multiple lines
     var textLines = _getTextLines(text);
     var textLineCount = textLines.length;
-    for (var l = 0; l < textLineCount; l++) {
-      var textLine = textLines[l];
-      var textLineWidth =
-          _getTextLineWidthForGlyphs(textLine, font, fontScale, parentScale);
+    // Add tracking
+    var tracking = documentData.tracking / 10;
+    if (_trackingCallbackAnimation != null) {
+      tracking += _trackingCallbackAnimation!.value;
+    } else if (_trackingAnimation != null) {
+      tracking += _trackingAnimation!.value;
+    }
+    var lineIndex = -1;
+    for (var i = 0; i < textLineCount; i++) {
+      var textLine = textLines[i];
+      var boxWidth = documentData.boxSize?.dx ?? 0.0;
+      var lines = _splitGlyphTextIntoLines(
+          textLine, boxWidth, font, fontScale, tracking, null);
+      for (var j = 0; j < lines.length; j++) {
+        var line = lines[j];
+        lineIndex++;
 
-      canvas.save();
+        canvas.save();
 
-      // Apply horizontal justification
-      _applyJustification(documentData.justification, canvas, textLineWidth);
+        _offsetCanvas(canvas, documentData, lineIndex, line.width);
+        _drawGlyphTextLine(line.text, documentData, font, canvas, parentScale,
+            fontScale, tracking);
 
-      // Center text vertically
-      var multilineTranslateY = (textLineCount - 1) * lineHeight / 2;
-      var translateY = l * lineHeight - multilineTranslateY;
-      canvas.translate(0, translateY);
-
-      // Draw each line
-      _drawGlyphTextLine(textLine, documentData, parentMatrix, font, canvas,
-          parentScale, fontScale);
-
-      // Reset canvas
-      canvas.restore();
+        canvas.restore();
+      }
     }
   }
 
-  void _drawGlyphTextLine(
-      String text,
-      DocumentData documentData,
-      Matrix4 parentMatrix,
-      Font font,
-      Canvas canvas,
-      double parentScale,
-      double fontScale) {
-    for (var i = 0; i < text.length; i++) {
-      var c = text[i];
-      var characterHash = FontCharacter.hashFor(c, font.family, font.style);
+  void _drawGlyphTextLine(Characters text, DocumentData documentData, Font font,
+      Canvas canvas, double parentScale, double fontScale, double tracking) {
+    for (var c in text) {
+      var characterHash =
+          FontCharacter.hashFor(c.toString(), font.family, font.style);
       var character = _composition.characters[characterHash];
       if (character == null) {
         // Something is wrong. Potentially, they didn't export the text as a glyph.
         continue;
       }
-      _drawCharacterAsGlyph(
-          character, parentMatrix, fontScale, documentData, canvas);
-      var tx =
-          character.width * fontScale * window.devicePixelRatio * parentScale;
-      // Add tracking
-      var tracking = documentData.tracking / 10.0;
-      if (_trackingCallbackAnimation != null) {
-        tracking += _trackingCallbackAnimation!.value;
-      } else if (_trackingAnimation != null) {
-        tracking += _trackingAnimation!.value;
-      }
-      tx += tracking * parentScale;
+      _drawCharacterAsGlyph(character, fontScale, documentData, canvas);
+      var tx = character.width * fontScale + tracking;
       canvas.translate(tx, 0);
     }
   }
 
-  void _drawTextWithFont(DocumentData documentData, Font font,
-      Matrix4 parentMatrix, Canvas canvas) {
+  void _drawTextWithFont(DocumentData documentData, Font font, Canvas canvas) {
     var textStyle = lottieDrawable.getTextStyle(font.family, font.style);
     var text = documentData.text;
     var textDelegate = lottieDrawable.delegates?.text;
@@ -238,11 +223,7 @@ class TextLayer extends BaseLayer {
     } else {
       textSize = documentData.size;
     }
-    textStyle =
-        textStyle.copyWith(fontSize: textSize * window.devicePixelRatio);
-
-    // Line height
-    var lineHeight = documentData.lineHeight * window.devicePixelRatio;
+    textStyle = textStyle.copyWith(fontSize: textSize);
 
     // Calculate tracking
     var tracking = documentData.tracking / 10;
@@ -251,49 +232,67 @@ class TextLayer extends BaseLayer {
     } else if (_trackingAnimation != null) {
       tracking += _trackingAnimation!.value;
     }
-    tracking = tracking * window.devicePixelRatio * textSize / 100.0;
+    tracking = tracking * textSize / 100.0;
 
     // Split full text in multiple lines
     var textLines = _getTextLines(text);
     var textLineCount = textLines.length;
-    for (var l = 0; l < textLineCount; l++) {
-      var textLine = textLines[l];
-      var textPainter = TextPainter(
-          text: TextSpan(text: textLine, style: textStyle),
-          textDirection: _textDirection);
-      textPainter.layout();
-      var textLineWidth = textPainter.width;
-      // We have to manually add the tracking between characters as the strokePaint ignores it
-      textLineWidth += (textLine.length - 1) * tracking;
+    var lineIndex = -1;
+    for (var i = 0; i < textLineCount; i++) {
+      var textLine = textLines[i];
+      var boxWidth = documentData.boxSize?.dx ?? 0.0;
+      var lines = _splitGlyphTextIntoLines(
+          textLine, boxWidth, font, 0.0, tracking, textStyle);
+      for (var j = 0; j < lines.length; j++) {
+        var line = lines[j];
+        lineIndex++;
 
-      canvas.save();
+        canvas.save();
 
-      // Apply horizontal justification
-      _applyJustification(documentData.justification, canvas, textLineWidth);
+        _offsetCanvas(canvas, documentData, lineIndex, line.width);
+        _drawFontTextLine(line.text, textStyle, documentData, canvas, tracking);
 
-      // Center text vertically
-      var multilineTranslateY = (textLineCount - 1) * lineHeight / 2;
-      var translateY = l * lineHeight - multilineTranslateY;
-      canvas.translate(0, translateY);
-
-      // Draw each line
-      _drawFontTextLine(textLine, textStyle, documentData, canvas, tracking);
-
-      // Reset canvas
-      canvas.restore();
+        canvas.restore();
+      }
     }
   }
 
-  List<String> _getTextLines(String text) {
-    // Split full text by carriage return character
-    var formattedText = text.replaceAll('\r\n', '\r').replaceAll('\n', '\r');
-    var textLinesArray = formattedText.split('\r');
-    return textLinesArray;
+  void _offsetCanvas(Canvas canvas, DocumentData documentData, int lineIndex,
+      double lineWidth) {
+    var position = documentData.boxPosition;
+    var size = documentData.boxSize;
+    var lineStartY =
+        position == null ? 0 : documentData.lineHeight + position.dy;
+    var lineOffset = lineIndex * documentData.lineHeight + lineStartY;
+    var lineStart = position?.dx ?? 0.0;
+    var boxWidth = size?.dx ?? 0.0;
+    switch (documentData.justification) {
+      case Justification.leftAlign:
+        canvas.translate(lineStart, lineOffset);
+        break;
+      case Justification.rightAlign:
+        canvas.translate(lineStart + boxWidth - lineWidth, lineOffset);
+        break;
+      case Justification.center:
+        canvas.translate(
+            lineStart + boxWidth / 2.0 - lineWidth / 2.0, lineOffset);
+        break;
+    }
   }
 
-  void _drawFontTextLine(String text, TextStyle textStyle,
+  List<Characters> _getTextLines(String text) {
+    // Split full text by carriage return character
+    var formattedText = text
+        .replaceAll('\r\n', '\r')
+        .replaceAll('\u0003', '\r')
+        .replaceAll('\n', '\r');
+    var textLinesArray = formattedText.split('\r');
+    return textLinesArray.map((l) => l.characters).toList();
+  }
+
+  void _drawFontTextLine(Characters text, TextStyle textStyle,
       DocumentData documentData, Canvas canvas, double tracking) {
-    for (var char in text.characters) {
+    for (var char in text) {
       var charString = char;
       _drawCharacterFromFont(charString, textStyle, documentData, canvas);
       var textPainter = TextPainter(
@@ -306,46 +305,110 @@ class TextLayer extends BaseLayer {
     }
   }
 
-  double _getTextLineWidthForGlyphs(
-      String textLine, Font font, double fontScale, double parentScale) {
-    var textLineWidth = 0.0;
-    for (var i = 0; i < textLine.length; i++) {
-      var c = textLine[i];
-      var characterHash = FontCharacter.hashFor(c, font.family, font.style);
-      var character = _composition.characters[characterHash];
-      if (character == null) {
-        continue;
+  List<_TextSubLine> _splitGlyphTextIntoLines(
+      Characters textLine,
+      double boxWidth,
+      Font font,
+      double fontScale,
+      double tracking,
+      TextStyle? textStyle) {
+    var usingGlyphs = textStyle == null;
+    var lineCount = 0;
+
+    var currentLineWidth = 0.0;
+    var currentLineStartIndex = 0;
+
+    var currentWordStartIndex = 0;
+    var currentWordWidth = 0.0;
+    var nextCharacterStartsWord = false;
+
+    // The measured size of a space.
+    var spaceWidth = 0.0;
+
+    var textPainter = TextPainter(
+        text: TextSpan(text: '', style: textStyle),
+        textDirection: _textDirection);
+    var i = 0;
+    for (var c in textLine) {
+      double currentCharWidth;
+      if (usingGlyphs) {
+        var characterHash = FontCharacter.hashFor(c, font.family, font.style);
+        var character = _composition.characters[characterHash];
+        if (character == null) {
+          continue;
+        }
+        currentCharWidth = character.width * fontScale + tracking;
+      } else {
+        textPainter.text = TextSpan(text: c, style: textStyle);
+        textPainter.layout();
+        currentCharWidth = textPainter.width + tracking;
       }
-      textLineWidth +=
-          character.width * fontScale * window.devicePixelRatio * parentScale;
+
+      if (c == ' ') {
+        spaceWidth = currentCharWidth;
+        nextCharacterStartsWord = true;
+      } else if (nextCharacterStartsWord) {
+        nextCharacterStartsWord = false;
+        currentWordStartIndex = i;
+        currentWordWidth = currentCharWidth;
+      } else {
+        currentWordWidth += currentCharWidth;
+      }
+      currentLineWidth += currentCharWidth;
+
+      if (boxWidth > 0 && currentLineWidth >= boxWidth) {
+        if (c == ' ') {
+          // Spaces at the end of a line don't do anything. Ignore it.
+          // The next non-space character will hit the conditions below.
+          continue;
+        }
+        var subLine = _ensureEnoughSubLines(++lineCount);
+        if (currentWordStartIndex == currentLineStartIndex) {
+          // Only word on line is wider than box, start wrapping mid-word.
+          var substr = textLine.getRange(currentLineStartIndex, i);
+          var trimmed = substr.trim(' '.characters);
+          var trimmedSpace = (trimmed.length - substr.length) * spaceWidth;
+          subLine.set(
+              trimmed, currentLineWidth - currentCharWidth - trimmedSpace);
+          currentLineStartIndex = i;
+          currentLineWidth = currentCharWidth;
+          currentWordStartIndex = currentLineStartIndex;
+          currentWordWidth = currentCharWidth;
+        } else {
+          var substr = textLine.getRange(
+              currentLineStartIndex, currentWordStartIndex - 1);
+          var trimmed = substr.trim(' '.characters);
+          var trimmedSpace = (substr.length - trimmed.length) * spaceWidth;
+          subLine.set(trimmed,
+              currentLineWidth - currentWordWidth - trimmedSpace - spaceWidth);
+          currentLineStartIndex = currentWordStartIndex;
+          currentLineWidth = currentWordWidth;
+        }
+      }
+      ++i;
     }
-    return textLineWidth;
+    if (currentLineWidth > 0) {
+      var line = _ensureEnoughSubLines(++lineCount);
+      line.set(textLine.getRange(currentLineStartIndex), currentLineWidth);
+    }
+    return _textSubLines.sublist(0, lineCount);
   }
 
-  void _applyJustification(
-      Justification justification, Canvas canvas, double textLineWidth) {
-    switch (justification) {
-      case Justification.leftAlign:
-        // Do nothing. Default is left aligned.
-        break;
-      case Justification.rightAlign:
-        canvas.translate(-textLineWidth, 0);
-        break;
-      case Justification.center:
-        canvas.translate(-textLineWidth / 2, 0);
-        break;
+  /// Elements are reused and not deleted to save allocations.
+  _TextSubLine _ensureEnoughSubLines(int numLines) {
+    for (var i = _textSubLines.length; i < numLines; i++) {
+      _textSubLines.add(_TextSubLine());
     }
+    return _textSubLines[numLines - 1];
   }
 
-  void _drawCharacterAsGlyph(FontCharacter character, Matrix4 parentMatrix,
-      double fontScale, DocumentData documentData, Canvas canvas) {
+  void _drawCharacterAsGlyph(FontCharacter character, double fontScale,
+      DocumentData documentData, Canvas canvas) {
     var contentGroups = _getContentsForCharacter(character);
     for (var j = 0; j < contentGroups.length; j++) {
       var path = contentGroups[j].getPath();
-      path.getBounds();
-      _matrix.set(parentMatrix);
-      _matrix.translate(
-          0.0, -documentData.baselineShift * window.devicePixelRatio);
+      _matrix.reset();
+      _matrix.translate(0.0, -documentData.baselineShift);
       _matrix.scale(fontScale, fontScale);
       path = path.transform(_matrix.storage);
       if (documentData.strokeOverFill) {
@@ -492,3 +555,13 @@ class TextLayer extends BaseLayer {
     }
   }
 }
+
+class _TextSubLine {
+  Characters text = Characters.empty;
+  double width = 0.0;
+
+  void set(Characters text, double width) {
+    this.text = text;
+    this.width = width;
+  }
+}

lib/src/parser/animatable_path_value_parser.dart

@@ -27,8 +27,8 @@ class AnimatablePathValueParser {
       reader.endArray();
       KeyframesParser.setEndFrames(keyframes);
     } else {
-      keyframes.add(Keyframe<Offset>.nonAnimated(
-          JsonUtils.jsonToPoint(reader, window.devicePixelRatio)));
+      keyframes
+          .add(Keyframe<Offset>.nonAnimated(JsonUtils.jsonToPoint(reader)));
     }
     return AnimatablePathValue.fromKeyframes(keyframes);
   }

lib/src/parser/animatable_transform_parser.dart

@@ -74,8 +74,7 @@ class AnimatableTransformParser {
           //           ]
           //         },
           // which doesn't parse to a real keyframe.
-          rotation = AnimatableValueParser.parseFloat(reader, composition,
-              isDp: false);
+          rotation = AnimatableValueParser.parseFloat(reader, composition);
           if (rotation.keyframes.isEmpty) {
             rotation.keyframes.add(Keyframe(composition,
                 startValue: 0.0,
@@ -96,20 +95,16 @@ class AnimatableTransformParser {
           opacity = AnimatableValueParser.parseInteger(reader, composition);
           break;
         case 6:
-          startOpacity = AnimatableValueParser.parseFloat(reader, composition,
-              isDp: false);
+          startOpacity = AnimatableValueParser.parseFloat(reader, composition);
           break;
         case 7:
-          endOpacity = AnimatableValueParser.parseFloat(reader, composition,
-              isDp: false);
+          endOpacity = AnimatableValueParser.parseFloat(reader, composition);
           break;
         case 8:
-          skew = AnimatableValueParser.parseFloat(reader, composition,
-              isDp: false);
+          skew = AnimatableValueParser.parseFloat(reader, composition);
           break;
         case 9:
-          skewAngle = AnimatableValueParser.parseFloat(reader, composition,
-              isDp: false);
+          skewAngle = AnimatableValueParser.parseFloat(reader, composition);
           break;
         default:
           reader.skipName();

lib/src/parser/animatable_value_parser.dart

@@ -1,4 +1,3 @@
-import 'dart:ui';
 import '../composition.dart';
 import '../model/animatable/animatable_color_value.dart';
 import '../model/animatable/animatable_double_value.dart';
@@ -25,12 +24,9 @@ class AnimatableValueParser {
   AnimatableValueParser._();
 
   static AnimatableDoubleValue parseFloat(
-      JsonReader reader, LottieComposition composition,
-      {bool? isDp}) {
-    isDp ??= true;
-    return AnimatableDoubleValue.fromKeyframes(parse(
-        reader, composition, floatParser,
-        scale: isDp ? window.devicePixelRatio : 1.0));
+      JsonReader reader, LottieComposition composition) {
+    return AnimatableDoubleValue.fromKeyframes(
+        parse(reader, composition, floatParser));
   }
 
   static AnimatableIntegerValue parseInteger(
@@ -42,7 +38,7 @@ class AnimatableValueParser {
   static AnimatablePointValue parsePoint(
       JsonReader reader, LottieComposition composition) {
     return AnimatablePointValue.fromKeyframes(KeyframesParser.parse(
-        reader, composition, window.devicePixelRatio, offsetParser,
+        reader, composition, offsetParser,
         multiDimensional: true));
   }
 
@@ -54,9 +50,8 @@ class AnimatableValueParser {
 
   static AnimatableShapeValue parseShapeData(
       JsonReader reader, LottieComposition composition) {
-    return AnimatableShapeValue.fromKeyframes(parse(
-        reader, composition, shapeDataParser,
-        scale: window.devicePixelRatio));
+    return AnimatableShapeValue.fromKeyframes(
+        parse(reader, composition, shapeDataParser));
   }
 
   static AnimatableTextFrame parseDocumentData(
@@ -78,9 +73,7 @@ class AnimatableValueParser {
   }
 
   static List<Keyframe<T>> parse<T>(JsonReader reader,
-      LottieComposition composition, ValueParser<T> valueParser,
-      {double? scale}) {
-    scale ??= 1.0;
-    return KeyframesParser.parse(reader, composition, scale, valueParser);
+      LottieComposition composition, ValueParser<T> valueParser) {
+    return KeyframesParser.parse(reader, composition, valueParser);
   }
 }

lib/src/parser/color_parser.dart

@@ -1,7 +1,7 @@
 import 'dart:ui';
 import 'moshi/json_reader.dart';
 
-Color colorParser(JsonReader reader, {required double scale}) {
+Color colorParser(JsonReader reader) {
   var isArray = reader.peek() == Token.beginArray;
   if (isArray) {
     reader.beginArray();

lib/src/parser/document_data_parser.dart

@@ -15,9 +15,11 @@ final JsonReaderOptions _names = JsonReaderOptions.of([
   'sc', // 8
   'sw', // 9
   'of', // 10
+  'ps', // 11
+  'sz', // 12
 ]);
 
-DocumentData documentDataParser(JsonReader reader, {required double scale}) {
+DocumentData documentDataParser(JsonReader reader) {
   String? text;
   String? fontName;
   var size = 0.0;
@@ -29,6 +31,8 @@ DocumentData documentDataParser(JsonReader reader, {required double scale}) {
   var strokeColor = const Color(0x00000000);
   var strokeWidth = 0.0;
   var strokeOverFill = true;
+  Offset? boxPosition;
+  Offset? boxSize;
 
   reader.beginObject();
   while (reader.hasNext()) {
@@ -72,6 +76,16 @@ DocumentData documentDataParser(JsonReader reader, {required double scale}) {
       case 10:
         strokeOverFill = reader.nextBoolean();
         break;
+      case 11:
+        reader.beginArray();
+        boxPosition = Offset(reader.nextDouble(), reader.nextDouble());
+        reader.endArray();
+        break;
+      case 12:
+        reader.beginArray();
+        boxSize = Offset(reader.nextDouble(), reader.nextDouble());
+        reader.endArray();
+        break;
       default:
         reader.skipName();
         reader.skipValue();
@@ -80,15 +94,18 @@ DocumentData documentDataParser(JsonReader reader, {required double scale}) {
   reader.endObject();
 
   return DocumentData(
-      text: text ?? '',
-      fontName: fontName,
-      size: size,
-      justification: justification,
-      tracking: tracking,
-      lineHeight: lineHeight,
-      baselineShift: baselineShift,
-      color: fillColor,
-      strokeColor: strokeColor,
-      strokeWidth: strokeWidth,
-      strokeOverFill: strokeOverFill);
+    text: text ?? '',
+    fontName: fontName,
+    size: size,
+    justification: justification,
+    tracking: tracking,
+    lineHeight: lineHeight,
+    baselineShift: baselineShift,
+    color: fillColor,
+    strokeColor: strokeColor,
+    strokeWidth: strokeWidth,
+    strokeOverFill: strokeOverFill,
+    boxPosition: boxPosition,
+    boxSize: boxSize,
+  );
 }

lib/src/parser/drop_shadow_effect_parser.dart

@@ -69,12 +69,11 @@ class DropShadowEffectParser {
               _color = AnimatableValueParser.parseColor(reader, composition);
               break;
             case 'Opacity':
-              _opacity = AnimatableValueParser.parseFloat(reader, composition,
-                  isDp: false);
+              _opacity = AnimatableValueParser.parseFloat(reader, composition);
               break;
             case 'Direction':
-              _direction = AnimatableValueParser.parseFloat(reader, composition,
-                  isDp: false);
+              _direction =
+                  AnimatableValueParser.parseFloat(reader, composition);
               break;
             case 'Distance':
               _distance = AnimatableValueParser.parseFloat(reader, composition);

lib/src/parser/float_parser.dart

@@ -1,6 +1,6 @@
 import 'json_utils.dart';
 import 'moshi/json_reader.dart';
 
-double floatParser(JsonReader reader, {required double scale}) {
-  return JsonUtils.valueFromObject(reader) * scale;
+double floatParser(JsonReader reader) {
+  return JsonUtils.valueFromObject(reader);
 }

lib/src/parser/gradient_color_parser.dart

@@ -1,5 +1,7 @@
 import 'dart:ui';
 import '../model/content/gradient_color.dart';
+import '../utils/collection.dart';
+import '../utils/gamma_evaluator.dart';
 import 'moshi/json_reader.dart';
 
 class GradientColorParser {
@@ -26,7 +28,7 @@ class GradientColorParser {
   /// opacity,
   /// ...
   /// ]
-  GradientColor parse(JsonReader reader, {required double scale}) {
+  GradientColor parse(JsonReader reader) {
     var array = <double>[];
     // The array was started by Keyframe because it thought that this may be an array of keyframes
     // but peek returned a number so it considered it a static array of numbers.
@@ -82,7 +84,7 @@ class GradientColorParser {
     }
 
     var gradientColor = GradientColor(positions, colors);
-    _addOpacityStopsToGradientIfNeeded(gradientColor, array);
+    gradientColor = _addOpacityStopsToGradientIfNeeded(gradientColor, array);
     return gradientColor;
   }
 
@@ -93,50 +95,159 @@ class GradientColorParser {
   /// <p>
   /// This should be a good approximation is nearly all cases. However, if there are many more
   /// opacity stops than color stops, information will be lost.
-  void _addOpacityStopsToGradientIfNeeded(
+  GradientColor _addOpacityStopsToGradientIfNeeded(
       GradientColor gradientColor, List<double> array) {
     var startIndex = _colorPoints * 4;
     if (array.length <= startIndex) {
-      return;
+      return gradientColor;
     }
 
+    // When there are opacity stops, we create a merged list of color stops and opacity stops.
+    // For a given color stop, we linearly interpolate the opacity for the two opacity stops around it.
+    // For a given opacity stop, we linearly interpolate the color for the two color stops around it.
+    var colorStopPositions = gradientColor.positions;
+    var colorStopColors = gradientColor.colors;
+
     var opacityStops = (array.length - startIndex) ~/ 2;
-    var positions = List<double>.filled(opacityStops, 0.0);
-    var opacities = List<double>.filled(opacityStops, 0.0);
+    var opacityStopPositions = List<double>.filled(opacityStops, 0.0);
+    var opacityStopOpacities = List<double>.filled(opacityStops, 0.0);
 
     for (var i = startIndex, j = 0; i < array.length; i++) {
       if (i % 2 == 0) {
-        positions[j] = array[i];
+        opacityStopPositions[j] = array[i];
       } else {
-        opacities[j] = array[i];
+        opacityStopOpacities[j] = array[i];
         j++;
       }
     }
 
-    for (var i = 0; i < gradientColor.size; i++) {
-      var color = gradientColor.colors[i];
-      color = color.withAlpha(_getOpacityAtPosition(
-          gradientColor.positions[i], positions, opacities));
-      gradientColor.colors[i] = color;
-    }
-  }
+    // Pre-SKIA (Oreo) devices render artifacts when there is two stops in the same position.
+    // As a result, we have to de-dupe the merge color and opacity stop positions.
+    var newPositions =
+        mergeUniqueElements(gradientColor.positions, opacityStopPositions);
+    var newColorPoints = newPositions.length;
+    var newColors = List<Color>.filled(newColorPoints, const Color(0xff000000));
 
-  int _getOpacityAtPosition(
-      double position, List<double> positions, List<double> opacities) {
-    for (var i = 1; i < positions.length; i++) {
-      var lastPosition = positions[i - 1];
-      var thisPosition = positions[i];
-      if (positions[i] >= position) {
-        var progress =
-            (position - lastPosition) / (thisPosition - lastPosition);
-        progress = progress.clamp(0, 1);
-        if (progress.isNaN) {
-          progress = 0.0;
+    for (var i = 0; i < newColorPoints; i++) {
+      var position = newPositions[i];
+      var colorStopIndex = binarySearch(colorStopPositions, position);
+      var opacityIndex = binarySearch(opacityStopPositions, position);
+      if (colorStopIndex < 0 || opacityIndex > 0) {
+        // This is a stop derived from an opacity stop.
+        if (opacityIndex < 0) {
+          // The formula here is derived from the return value for binarySearch. When an item isn't found, it returns -insertionPoint - 1.
+          opacityIndex = -(opacityIndex + 1);
         }
-        return (255 * lerpDouble(opacities[i - 1], opacities[i], progress)!)
-            .round();
+        newColors[i] = _getColorInBetweenColorStops(
+            position,
+            opacityStopOpacities[opacityIndex],
+            colorStopPositions,
+            colorStopColors);
+      } else {
+        // This os a step derived from a color stop.
+        newColors[i] = _getColorInBetweenOpacityStops(
+            position,
+            colorStopColors[colorStopIndex],
+            opacityStopPositions,
+            opacityStopOpacities);
       }
     }
-    return (255 * opacities[opacities.length - 1]).round();
+    return GradientColor(newPositions, newColors);
+  }
+
+  Color _getColorInBetweenColorStops(double position, double opacity,
+      List<double> colorStopPositions, List<Color> colorStopColors) {
+    if (colorStopColors.length < 2 || position == colorStopPositions[0]) {
+      return colorStopColors[0];
+    }
+    for (var i = 1; i < colorStopPositions.length; i++) {
+      var colorStopPosition = colorStopPositions[i];
+      if (colorStopPosition < position && i != colorStopPositions.length - 1) {
+        continue;
+      }
+      // We found the position in which position is between i - 1 and i.
+      var distanceBetweenColors =
+          colorStopPositions[i] - colorStopPositions[i - 1];
+      var distanceToLowerColor = position - colorStopPositions[i - 1];
+      var percentage = distanceToLowerColor / distanceBetweenColors;
+      var upperColor = colorStopColors[i];
+      var lowerColor = colorStopColors[i - 1];
+      return GammaEvaluator.evaluate(
+              percentage, upperColor.withOpacity(1), lowerColor.withOpacity(1))
+          .withOpacity(opacity);
+    }
+    throw Exception('Unreachable code.');
+  }
+
+  Color _getColorInBetweenOpacityStops(double position, Color color,
+      List<double> opacityStopPositions, List<double> opacityStopOpacities) {
+    if (opacityStopOpacities.length < 2 ||
+        position <= opacityStopPositions[0]) {
+      return color.withOpacity(opacityStopOpacities[0]);
+    }
+    for (var i = 1; i < opacityStopPositions.length; i++) {
+      var opacityStopPosition = opacityStopPositions[i];
+      if (opacityStopPosition < position &&
+          i != opacityStopPositions.length - 1) {
+        continue;
+      }
+      final double opacity;
+      if (opacityStopPosition <= position) {
+        opacity = opacityStopOpacities[i];
+      } else {
+        // We found the position in which position in between i - 1 and i.
+        var distanceBetweenOpacities =
+            opacityStopPositions[i] - opacityStopPositions[i - 1];
+        var distanceToLowerOpacity = position - opacityStopPositions[i - 1];
+        var percentage = distanceToLowerOpacity / distanceBetweenOpacities;
+        opacity = lerpDouble(
+            opacityStopOpacities[i - 1], opacityStopOpacities[i], percentage)!;
+      }
+      return color.withOpacity(opacity);
+    }
+    throw Exception('Unreachable code.');
+  }
+
+  /// Takes two sorted float arrays and merges their elements while removing duplicates.
+  static List<double> mergeUniqueElements(
+      List<double> arrayA, List<double> arrayB) {
+    if (arrayA.isEmpty) {
+      return arrayB;
+    } else if (arrayB.isEmpty) {
+      return arrayA;
+    }
+
+    var aIndex = 0;
+    var bIndex = 0;
+    var numDuplicates = 0;
+    // This will be the merged list but may be longer than what is needed if there are duplicates.
+    // If there are, the 0 elements at the end need to be truncated.
+    var mergedNotTruncated =
+        List<double>.filled(arrayA.length + arrayB.length, 0);
+    for (var i = 0; i < mergedNotTruncated.length; i++) {
+      final a = aIndex < arrayA.length ? arrayA[aIndex] : double.nan;
+      final b = bIndex < arrayB.length ? arrayB[bIndex] : double.nan;
+
+      if (b.isNaN || a < b) {
+        mergedNotTruncated[i] = a;
+        aIndex++;
+      } else if (a.isNaN || b < a) {
+        mergedNotTruncated[i] = b;
+        bIndex++;
+      } else {
+        mergedNotTruncated[i] = a;
+        aIndex++;
+        bIndex++;
+        numDuplicates++;
+      }
+    }
+
+    if (numDuplicates == 0) {
+      return mergedNotTruncated;
+    }
+
+    return mergedNotTruncated
+        .take(mergedNotTruncated.length - numDuplicates)
+        .toList();
   }
 }