public static BitmapFrame Resize(this BitmapFrame frame, int width, int height, BitmapScalingMode mode = BitmapScalingMode.NearestNeighbor)
{
if (frame.IsNullOrEmpty() || width <= 0 || height <= 0)
{
return(null);
}
if (frame.Width == width && frame.Height == height)
{
return((BitmapFrame)frame.Clone());
}
DrawingGroup group = new DrawingGroup();
RenderOptions.SetBitmapScalingMode(group, mode);
group.Children.Add(new ImageDrawing(frame, new Rect(0, 0, width, height)));
DrawingVisual visual = new DrawingVisual();
DrawingContext context = visual.RenderOpen();
context.DrawDrawing(group);
RenderTargetBitmap rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Default);
context.Close();
rtb.Render(visual);
BitmapFrame result = BitmapFrame.Create(rtb);
return(result);
}
//not working
public static BitmapFrame Copy(this BitmapFrame frame)
{
if (frame.IsNullOrEmpty())
{
return(null);
}
return(frame.Clone().ToBitmapFrame());
}
