FPS Counter

fps_counter.dart

class FPSCounter extends StatefulWidget {
  const FPSCounter({super.key});

  @override
  State<FPSCounter> createState() => _FPSCounterState();
}

class _FPSCounterState extends State<FPSCounter> {
  int fps = 0;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addTimingsCallback((timings) {
      final FrameTimingSummarizer frameTimes = FrameTimingSummarizer(timings);

      setState(() {
        fps = 1000000.0 ~/ frameTimes.averageFrameBuildTime.inMicroseconds;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Text('FPS: $fps');
  }
}