TimeGauge(num time, BitmapData bitmapData, [ String direction = Gauge.DIRECTION_LEFT ])

Source

TimeGauge(num time, BitmapData bitmapData, [String direction =
    Gauge.DIRECTION_LEFT]) : super(bitmapData, direction) {

  if (time <= 0) throw new ArgumentError('Time must be greater than zero');
  _totalTime = time;
  clearAlarms();
}