startSleepTimer method

void startSleepTimer(
  1. Duration duration,
  2. VoidCallback onElapsed
)

Calls onElapsed after duration (e.g. pause).

Implementation

void startSleepTimer(Duration duration, VoidCallback onElapsed) {
  _sleepTimer?.cancel();
  _sleepAt = DateTime.now().add(duration);
  _sleepTimer = Timer(duration, () {
    _sleepAt = null;
    onElapsed();
    notifyListeners();
  });
  notifyListeners();
}