/// <summary>
/// Defines the media element to drag.
/// </summary>
private void DropZone_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!VideoControl.SourceProvider.MediaPlayer.CouldPlay)
{
return;
}
var scaleTransform = (ScaleTransform)((TransformGroup)VideoControl.RenderTransform).Children.First(tr => tr is ScaleTransform);
var elementHeight = VideoControl.ActualHeight * scaleTransform.ScaleY;
var elementWidth = VideoControl.ActualWidth * scaleTransform.ScaleX;
if (elementWidth <= DropZone.ActualWidth && elementHeight <= DropZone.ActualHeight)
{
return;
}
VideoControl.Cursor = Cursors.SizeAll;
DropZone.CaptureMouse();
var translateTransform = (TranslateTransform)((TransformGroup)VideoControl.RenderTransform).Children.First(tr => tr is TranslateTransform);
MousePosition = e.GetPosition(DropZone);
OriginPosition = new Point(Math.Round(translateTransform.X, MidpointRounding.AwayFromZero), Math.Round(translateTransform.Y, MidpointRounding.AwayFromZero));
SystemParametersInfo(0x0071, 0, 3, 0);
}