/// <summary>
/// Method to handle property changed event of FrameIndex property.
/// </summary>
/// <param name="obj">Source image.</param>
/// <param name="ev">Event arguments.</param>
protected static void ChangingFrameIndex(DependencyObject obj, DependencyPropertyChangedEventArgs ev)
{
GifImage ob = obj as GifImage;
ob.Source = ob.gf.Frames[ob.FrameIndex];
ob.InvalidateVisual();
}
/// <summary>
/// Method to handle property changed event of AnimationSourcePath property.
/// </summary>
/// <param name="obj">Source image.</param>
/// <param name="ev">Event arguments.</param>
protected static void AnimationSourcePathPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs ev)
{
GifImage ob = obj as GifImage;
ob.BeginAnimation(GifImage.FrameIndexProperty, null);
ob.anim = null;
ob.gf = null;
ob.Source = null;
if (!String.IsNullOrEmpty(ob.AnimationSourcePath) &&
Uri.IsWellFormedUriString(ob.AnimationSourcePath, UriKind.RelativeOrAbsolute))
{
if (((string)ob.AnimationSourcePath).ToLower().EndsWith(".gif"))
{
Uri uri = new Uri(ob.AnimationSourcePath);
GifImage.SetupAnimationSource(ob, uri);
ob.BeginAnimation(GifImage.FrameIndexProperty, ob.anim);
}
else
{
ob.Source = (new ImageSourceConverter()).ConvertFromString(ob.AnimationSourcePath) as ImageSource;
ob.InvalidateVisual();
}
ob.animationIsWorking = true;
}
}