class MarqueeWidget extends StatefulWidget {
final Widget child;
final Axis direction;
final Duration animationDuration, backDuration, pauseDuration;
const MarqueeWidget({
Key? key,
required this.child,
this.direction = Axis.horizontal,
this.animationDuration = const Duration(milliseconds: 6000),
this.backDuration = const Duration(milliseconds: 800),
this.pauseDuration = const Duration(milliseconds: 800),
}) : super(key: key);
@override
_MarqueeWidgetState createState() => _MarqueeWidgetState();
}
class _MarqueeWidgetState extends State<MarqueeWidget> {
late ScrollController scrollController;
@override
void initState() {
scrollController = ScrollController(initialScrollOffset: 50.0);
WidgetsBinding.instance.addPostFrameCallback(scroll);
super.initState();
}
@override
void dispose() {
scrollController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return SingleChildScrollView(
physics: NeverScrollableScrollPhysics(),
child: widget.child,
scrollDirection: widget.direction,
controller: scrollController,
);
}
void scroll(_) async {
while (scrollController.hasClients) {
await Future.delayed(widget.pauseDuration);
if (scrollController.hasClients) {
await scrollController.animateTo(
scrollController.position.maxScrollExtent,
duration: widget.animationDuration,
curve: Curves.ease,
);
}
await Future.delayed(widget.pauseDuration);
if (scrollController.hasClients) {
await scrollController.animateTo(
0.0,
duration: widget.backDuration,
curve: Curves.easeOut,
);
}
}
}
}