private void DetectTapGestures()
{
TouchManipulationInfo[] infos = new TouchManipulationInfo[_touchDictionary.Count];
_touchDictionary.Values.CopyTo(infos, 0);
if (infos.Length != 1)
{
return;
}
SKPoint point = infos[0].PreviousPoint;
if (infos[0].MoveCounter > MaxTapMoveCounter)
{
return;
}
var tapEventArgs = new TapEventArgs(point);
var now = DateTime.Now;
var lastTapTime = LastTapTime;
LastTapTime = now;
OnTap?.Invoke(this, tapEventArgs);
if (now - lastTapTime < DoubleTapDelay)
{
OnDoubleTap?.Invoke(this, tapEventArgs);
LastDoubleTapTime = now;
LastTapTime = DateTime.MinValue; //Reset double tap timer
}
else
{
_timer = new Timer(_ =>
{
if (DateTime.Now - LastDoubleTapTime < DoubleTapDelay)
{
return;
}
OnSingleTap?.Invoke(this, tapEventArgs);
}, null, DoubleTapDelay.Milliseconds, Timeout.Infinite);
}
}
protected virtual void TouchGestureRecognizerOnDoubleTap(object sender, TapEventArgs args)
{
SKPoint scenePoint = _skScene.GetCanvasPointFromViewPoint(args.ViewPoint);
_skScene.ZoomByScaleFactor(scenePoint, DoubleTapScaleFactor);
}