TransitionImage class with a tap gesture.

transition_image_with_gesture.dart

class TransitionImage extends FloopWidget {
  final Image image;
  const TransitionImage(this.image);

  @override
  Widget build(BuildContext context) {
    // Opacity transitions from 0 to 1 in 1.5 seconds.
    return GestureDetector(
      child: Opacity(opacity: transition(1500), child: image),
      onTap: () async {
        if (await fetchAndUpdateImage()) {
          Transitions.restart(context: context);
        }
      },
    );
  }
}