/// <summary>
/// Ends user intercation logic, like mouseup
/// </summary>
/// <param name="p">Last point</param>
public void PressUp(Point p)
{
if ((((HasNoLayers)|(!_pressed))) || (!SelectedLayer.IsVisible))
return;
_pressed = false;
if (PanMode)
return;
SelectedLayer.Apply();
_points.Clear();
}