public override bool OnTouchEvent(Android.Views.MotionEvent e)
{
double x = (e.GetX() * LayoutElement.Width) / this.Width;
double y = (e.GetY() * LayoutElement.Height) / this.Height;
switch (e.Action)
{
case Android.Views.MotionEventActions.Down:
HandleTouchStart(x, y);
startX = x;
startY = y;
break;
case Android.Views.MotionEventActions.Move:
if (LayoutElement.Dragging)
{
LayoutElement.HandleTouch(x, y);
}
break;
case Android.Views.MotionEventActions.Up:
if (currentDraggable != null && ((currentDraggable.Status == DragState.None || currentDraggable.Status == DragState.Started) || BelowTapThreshold(x, y)))
{
if (currentDraggable.TapEnabled)
{
currentDraggable.OnTapped();
}
currentDraggable = null;
}
if (LayoutElement.Dragging)
{
MessagingCenter.Send <DragAndDropLayoutRenderer, bool>(this, "IsDragging", false);
LayoutElement.StopDragging();
LayoutElement.Dragging = false;
currentDraggable = null;
}
break;
default:
break;
}
return(true);
}
public override void TouchesEnded(Foundation.NSSet touches, UIEvent evt)
{
base.TouchesEnded(touches, evt);
if (currentDraggable != null && (currentDraggable.Status == DragState.None || currentDraggable.Status == DragState.Started))
{
if (currentDraggable.TapEnabled)
{
currentDraggable.OnTapped();
}
currentDraggable = null;
}
if (LayoutElement.Dragging)
{
LayoutElement.StopDragging();
LayoutElement.Dragging = false;
dragMightStart = false;
currentDraggable = null;
}
}
