Скопипастил http://stackoverflow.com/questions/210922/how-do-i-get-an-animated-gif-to-work-in-wpf:
| Код |
class GifImage : Image {
public int FrameIndex {
get { return (int)GetValue(FrameIndexProperty); }
set { SetValue(FrameIndexProperty, value); }
}
public static readonly DependencyProperty FrameIndexProperty =
DependencyProperty.Register("FrameIndex", typeof(int), typeof(GifImage), new UIPropertyMetadata(0, new PropertyChangedCallback(ChangingFrameIndex)));
static void ChangingFrameIndex(DependencyObject obj, DependencyPropertyChangedEventArgs ev) {
GifImage ob = obj as GifImage;
ob.Source = ob.gf.Frames[(int)ev.NewValue];
ob.InvalidateVisual();
}
GifBitmapDecoder gf;
Int32Animation anim ;
public GifImage(Uri uri) {
gf = new GifBitmapDecoder(uri, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
anim = new Int32Animation(0, gf.Frames.Count - 1, new Duration(new TimeSpan(0,0, 0,gf.Frames.Count/10,(int)((gf.Frames.Count/10.0-gf.Frames.Count/10)*1000))));
anim.RepeatBehavior = RepeatBehavior.Forever;
Source = gf.Frames[0];
}
bool animationIsWorking = false;
protected override void OnRender(DrawingContext dc) {
base.OnRender(dc);
if (!animationIsWorking) {
BeginAnimation(FrameIndexProperty, anim);
animationIsWorking = true;
}
}
}
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