lottie-flutter

• Added support for rounded corners on shapes and rects
• Add support for text in dynamic properties (ValueDelegate)

Example:

Lottie.asset(
  'assets/DynamicText.json',
  delegates: LottieDelegates(values: [
    ValueDelegate.text(
      ['Text layer'], // The path to the text element to change
      value: 'The new text',
    ),
  ]),
)

• Improve stroke with offset
• Add support for reversed polystar paths
• Enforce order of operations to avoid rounding errors

• Internal maintenance: fix lints for Flutter 2.10

fix: Revert Cubic to PathInterpolator.cubic

• Add support for gaussian blurs.

Example to blur some elements dynamically:

Lottie.asset(
  'assets/AndroidWave.json',
  delegates: LottieDelegates(values: [
    ValueDelegate.blurRadius(
      ['**'], // The path to the element to blur
      value: 20,
    ),
  ]),
)

• Add support for drop shadows.

Example to add a shadow dynamically:

Lottie.asset(
  'assets/animation.json',
  delegates: LottieDelegates(values: [
    ValueDelegate.dropShadow(
      ['**'], // The path to the elements with shadow
      value: const DropShadow(
        color: Colors.blue,
        direction: 140,
        distance: 60,
        radius: 10,
      ),
    ),
  ]),
)

• Add errorBuilder callback to provide an alternative widget in case an error occurs during loading.

Lottie.network(
  'https://example.does.not.exist/lottie.json',
  errorBuilder: (context, exception, stackTrace) {
    return const Text('😢');
  },
);

• Add onWarning to be notified when a warning occurs during the animation parsing or painting.
  Previously the warnings where written in an internal logger.

  Lottie.asset('animation.json'
    onWarning: (warning) {
      _logger.info(warning);
    },
  );
  

• Various bug fixes

• Implement RenderBox.computeDryLayout

• 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

• Fix compilation error with the Web platform

• Add image to LottieDelegates
• Fix imageProviderFactory to work with zip files

• Remove print after load

• Fix rendering bug with matte layers

Migrate to null safety

Fix Flutter Web compilation error

Performance improvement for complex animations.

• 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).
  The new frameRate property allows to opt-out this behaviour and have the widget to repaint at the device frame rate (FrameRate.max).
• Automatically adds a RepaintBoundary around the widget. Since Lottie animations are generally complex to paint, a RepaintBoundary will separate the animation with the rest of the app and improve performance. A new property addRepaintBoundary allows to opt-out this behaviour.
• Fixes a bug where we would call markNeedPaint when the animation was not changing. This removes unnecessary paints in animations with static periods.

Remove direct dependencies on dart:io to support Flutter Web

• Support loading animation from network in a web app
• Fix a couple of bugs with the web dev compiler

• Support color value stored as RGB, not RGBA

• Support latest version of the characters package

• 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
  first shape. If you need to cut out one shape from another shape, use an even-odd fill type
  instead of using merge paths.

Merge paths can be enabled with:

Lottie.asset('file.json', options: LottieOptions(enableMergePaths: true));