private void UpdateAnimatedBitmap()
{
this.StopAnimate();
if (this.animatedBitmapStream != null)
{
this.animatedBitmapStream.Close();
this.animatedBitmapStream = null;
this.frames = null;
this.currentFrameNumber = 0;
}
if (this.AnimatedBitmap != null)
{
Stream ImageStream;
try
{
if (this.AnimatedBitmap.IsAbsoluteUri && File.Exists(this.AnimatedBitmap.AbsoluteUri))
{
ImageStream = File.OpenRead(this.AnimatedBitmap.AbsoluteUri);
}
else
{
StreamResourceInfo Resource = Application.GetResourceStream(this.AnimatedBitmap);
if (Resource == null)
{
throw new InvalidOperationException($"Resource '{this.AnimatedBitmap.OriginalString}' not found!");
}
else
{
ImageStream = Resource.Stream;
}
}
}
catch (Exception E)
{
throw new InvalidOperationException($"Image could not be loaded: '{this.AnimatedBitmap.OriginalString}'", E);
}
this.animatedBitmapStream = ImageStream;
this.animatedBitmap = new System.Drawing.Bitmap(this.animatedBitmapStream);
int FrameCount = this.animatedBitmap.GetFrameCount(FrameDimension.Time);
this.frames = new ImageSource[FrameCount];
for (int FrameNumber = 0; FrameNumber < FrameCount; FrameNumber++)
{
this.animatedBitmap.SelectActiveFrame(FrameDimension.Time, FrameNumber);
this.animatedBitmap.MakeTransparent();
IntPtr BitmapHandle = this.animatedBitmap.GetHbitmap();
this.frames[FrameNumber] = Imaging.CreateBitmapSourceFromHBitmap(
BitmapHandle,
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
AnimatedImage.DeleteObject(BitmapHandle);
}
}
this.StartAnimate();
}
private static void OnAnimatedBitmapChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
AnimatedImage Control = (AnimatedImage)obj;
Control.UpdateAnimatedBitmap();
}