public void OnActionZoomOut(ActionMapEventArgs e)
 {
     if (e.KeyEvent == KeyEvent.OnPress && CurrentZoomLevel <= MaxZoomLevel)
     {
         CurrentZoomLevel++;
     }
 }
 public void OnActionZoomIn(ActionMapEventArgs e)
 {
     if (e.KeyEvent == KeyEvent.OnPress && CurrentZoomLevel > 1)
     {
         CurrentZoomLevel--;
     }
 }