42 lines
1.0 KiB
Dart
42 lines
1.0 KiB
Dart
import 'dart:async' show Timer;
|
|
|
|
import 'package:flutter/material.dart';
|
|
|
|
/// A 1x1 pixel widget that continuously repaints to keep Flutter's frame clock active on Linux.
|
|
/// This prevents animations from freezing when GTK's frame clock goes idle.
|
|
class LinuxKeepAlive extends StatefulWidget {
|
|
const LinuxKeepAlive({super.key});
|
|
|
|
@override
|
|
State<LinuxKeepAlive> createState() => _LinuxKeepAliveState();
|
|
}
|
|
|
|
class _LinuxKeepAliveState extends State<LinuxKeepAlive> {
|
|
Timer? _timer;
|
|
int _tick = 0;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
// Repaint every 100ms to keep Flutter's frame scheduler active.
|
|
_timer = Timer.periodic(const Duration(milliseconds: 100), (_) {
|
|
if (mounted) {
|
|
setState(() {
|
|
_tick++;
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_timer?.cancel();
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return SizedBox(width: 1, height: 1, child: ColoredBox(color: Color.fromRGBO(0, 0, 0, _tick % 2 == 0 ? 0.1 : 0.2)));
|
|
}
|
|
}
|