private void OnMouseLeftDown(object sender, MouseButtonEventArgs e)
{
var view = sender as IShowMouseSelectionView;
if (view == null)
{
return;
}
// just in case it wasn't cleaned up for some reasons
CleanUpSelectionDraw();
drawRectangle = new DrawRectangle(view);
drawRectangle.Begin(e.GetPosition(null));
}
private void CleanUpSelectionDraw()
{
drawRectangle?.Dispose();
drawRectangle = null;
}