Add alignment transition and restart it on click

restart_transition.dart

class ImageDisplay extends StatelessWidget with Floop {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: floop['image'] == null
          ? Center(
              child: Text(
                'Loading...',
                textScaleFactor: 2,
              ),
            )
          : Align(
              alignment: Alignment(0, transition(2000, delayMillis: 800) - 1),
              child: floop['image']),
      floatingActionButton: FloatingActionButton(
          child: Icon(Icons.refresh),
          onPressed: () async {
            floop['image'] = null;
            await fetchAndUpdateImage();
            Transitions.restart(context: context);
          }),
    );
  }
}