private IntPtr GetWin32InfoFromUIElement(System.Windows.UIElement uiElement, out System.Drawing.Rectangle rect)
{
// Convert UIElement to Rectangle
System.Windows.Media.Matrix matrix;
System.Windows.PresentationSource presentationSource = System.Windows.PresentationSource.FromVisual(uiElement);
if (presentationSource == null)
{
throw new InvalidOperationException("The specified UiElement is not connected to a rendering Visual Tree.");
}
try
{
System.Windows.Media.GeneralTransform generalTransform = uiElement.TransformToAncestor(presentationSource.RootVisual);
System.Windows.Media.Transform transform = generalTransform as System.Windows.Media.Transform;
if (transform == null)
{
throw new ApplicationException("//TODO: Handle GeneralTransform Case - introduced by Transforms Breaking Change");
}
matrix = transform.Value;
}
catch (InvalidOperationException)
{
throw new InvalidOperationException("The specified UiElement is not connected to a rendering Visual Tree.");
}
System.Windows.Rect rect1 = new System.Windows.Rect(new System.Windows.Point(), uiElement.RenderSize);
rect1.Transform(matrix);
System.Windows.Point point1 = rect1.TopLeft;
point1 = presentationSource.CompositionTarget.TransformToDevice.Transform(point1);
Point point2 = new Point((int)point1.X, (int)point1.Y);
IntPtr hwnd = ((System.Windows.Interop.HwndSource)presentationSource).Handle; // PresentaionSource.RootVisual ?
User32.ClientToScreen(hwnd, ref point2);
rect = new System.Drawing.Rectangle(point2, new System.Drawing.Size(
Convert.ToInt32(Microsoft.Test.Display.Monitor.ConvertLogicalToScreen(Microsoft.Test.Display.Dimension.Width, uiElement.RenderSize.Width)),
Convert.ToInt32(Microsoft.Test.Display.Monitor.ConvertLogicalToScreen(Microsoft.Test.Display.Dimension.Height, uiElement.RenderSize.Height))));
return(hwnd);
}
public void generateThumbnail(MediaProbe mediaProbe, ImageMetadata image,
CancellationToken token, int timeoutSeconds, int nrThumbnails)
{
// possibly could not seek in video, try to get the first frame in the video
List <MediaThumb> thumbBitmaps = mediaProbe.grabThumbnails(Constants.MAX_THUMBNAIL_WIDTH,
Constants.MAX_THUMBNAIL_HEIGHT, 0, 1, 0, token, timeoutSeconds, null);
if (thumbBitmaps.Count > 0)
{
BitmapSource thumb = thumbBitmaps[0].Thumb;
if (image.Orientation.HasValue && image.Orientation.Value != 1)
{
System.Windows.Media.Transform transform = null;
switch (image.Orientation.Value)
{
case 2:
{
//Mirror horizontal
transform = new System.Windows.Media.MatrixTransform(-1, 0, 0, 1, 0, 0);
break;
}
case 3:
{
//Rotate 180°
transform = new System.Windows.Media.RotateTransform(180);
break;
}
case 4:
{
//Mirror vertical
transform = new System.Windows.Media.MatrixTransform(1, 0, 0, -1, 0, 0);
break;
}
case 5:
{
//Mirror horizontal, rotate 270°
transform = new System.Windows.Media.MatrixTransform(0, -1, -1, 0, 0, 0);
break;
}
case 6:
{
//Rotate 90°
transform = new System.Windows.Media.RotateTransform(90);
break;
}
case 7:
{
//Mirror horizontal, rotate 90°
transform = new System.Windows.Media.MatrixTransform(0, 1, 1, 0, 0, 0);
break;
}
case 8:
{
//Rotate 270°
transform = new System.Windows.Media.RotateTransform(270);
break;
}
default:
{
Logger.Log.Warn("Unknown orientation for image");
break;
}
}
if (transform != null)
{
thumb = new TransformedBitmap(thumb, transform);
}
}
image.Thumbnail = new Thumbnail(thumb);
}
else
{
image.Thumbnail = null;
}
}
public TransformedBitmap(BitmapSource source, System.Windows.Media.Transform newTransform)
{
}
