Color Changing Controller for Rive 2

color_changing_controller.dart

class ColorChangingController extends SimpleAnimation {
  final Set<Fill> fills = {};
  ColorChangingController(String animationName) : super(animationName);
  @override
  bool init(Artboard artboard) {
    if (!super.init(artboard)) {
      return false;
    }
    // Crappy way to find the right components, we need to add an
    // artboard.get('name');
    artboard.forEachComponent((component) {
      if (component.name == 'liquid_back' || component.name == 'liquid_front') {
        if (component is Shape) {
          // It's a shape as expected grab the fills and store them so we can
          // later manipulate their color values.
          fills.addAll(component.fills);
        }
      }
    });
    return true;
  }
  Color get color {
    for (final fill in fills) {
      var painter = fill.paintMutator;
      if (painter is SolidColor) {
        return painter.color;
      }
    }
    return null;
  }
  set color(Color value) {
    for (final fill in fills) {
      var painter = fill.paintMutator;
      if (painter is SolidColor) {
        painter.color = value;
      }
    }
  }
}