private static ObjectAnimationUsingKeyFrames GetAnimation(Image imageControl, BitmapSource source)
{
ObjectAnimationUsingKeyFrames animation = AnimationCache.GetAnimation(source, GetRepeatBehavior(imageControl));
if (animation == null)
{
GifFile file;
GifBitmapDecoder decoder = GetDecoder(source, out file) as GifBitmapDecoder;
if ((decoder == null) || (decoder.Frames.Count <= 1))
{
return(null);
}
Int32Size fullSize = GetFullSize(decoder, file);
int frameIndex = 0;
animation = new ObjectAnimationUsingKeyFrames();
TimeSpan zero = TimeSpan.Zero;
BitmapSource baseFrame = null;
foreach (BitmapFrame frame in decoder.Frames)
{
FrameMetadata metadata = GetFrameMetadata(decoder, file, frameIndex);
BitmapSource source3 = MakeFrame(fullSize, frame, metadata, baseFrame);
DiscreteObjectKeyFrame keyFrame = new DiscreteObjectKeyFrame(source3, zero);
animation.KeyFrames.Add(keyFrame);
zero += metadata.Delay;
FrameDisposalMethod disposalMethod = metadata.DisposalMethod;
switch (disposalMethod)
{
case FrameDisposalMethod.None:
case FrameDisposalMethod.DoNotDispose:
baseFrame = source3;
break;
case FrameDisposalMethod.RestoreBackground:
baseFrame = !IsFullFrame(metadata, fullSize) ? ClearArea(source3, metadata) : null;
break;
default:
break;
}
frameIndex++;
}
animation.Duration = zero;
animation.RepeatBehavior = GetActualRepeatBehavior(imageControl, decoder, file);
AnimationCache.AddAnimation(source, GetRepeatBehavior(imageControl), animation);
AnimationCache.IncrementReferenceCount(source, GetRepeatBehavior(imageControl));
}
return(animation);
}
private static ObjectAnimationUsingKeyFrames GetAnimation(Image imageControl, BitmapSource source)
{
var animation = AnimationCache.GetAnimation(source, GetRepeatBehavior(imageControl));
if (animation != null)
{
return(animation);
}
GifFile gifMetadata;
var decoder = GetDecoder(source, imageControl, out gifMetadata) as GifBitmapDecoder;
if (decoder != null && decoder.Frames.Count > 1)
{
var animationFrames = CreateGifAnimation(decoder, gifMetadata);
animation.RepeatBehavior = GetActualRepeatBehavior(imageControl, decoder, gifMetadata);
AnimationCache.AddAnimation(source, GetRepeatBehavior(imageControl), animation);
AnimationCache.IncrementReferenceCount(source, GetRepeatBehavior(imageControl));
return(animationFrames);
}
return(null);
}
private static ObjectAnimationUsingKeyFrames GetAnimation(Image imageControl, BitmapSource source)
{
var animation = AnimationCache.GetAnimation(source, GetRepeatBehavior(imageControl));
if (animation != null)
{
return(animation);
}
GifFile gifMetadata;
var decoder = GetDecoder(source, out gifMetadata) as GifBitmapDecoder;
if (decoder != null && decoder.Frames.Count > 1)
{
var fullSize = GetFullSize(decoder, gifMetadata);
int index = 0;
animation = new ObjectAnimationUsingKeyFrames();
var totalDuration = TimeSpan.Zero;
BitmapSource baseFrame = null;
foreach (var rawFrame in decoder.Frames)
{
var metadata = GetFrameMetadata(decoder, gifMetadata, index);
var frame = MakeFrame(fullSize, rawFrame, metadata, baseFrame);
var keyFrame = new DiscreteObjectKeyFrame(frame, totalDuration);
animation.KeyFrames.Add(keyFrame);
totalDuration += metadata.Delay;
switch (metadata.DisposalMethod)
{
case FrameDisposalMethod.None:
case FrameDisposalMethod.DoNotDispose:
baseFrame = frame;
break;
case FrameDisposalMethod.RestoreBackground:
if (IsFullFrame(metadata, fullSize))
{
baseFrame = null;
}
else
{
baseFrame = ClearArea(frame, metadata);
}
break;
case FrameDisposalMethod.RestorePrevious:
// Reuse same base frame
break;
}
index++;
}
animation.Duration = totalDuration;
animation.RepeatBehavior = GetActualRepeatBehavior(imageControl, decoder, gifMetadata);
AnimationCache.AddAnimation(source, GetRepeatBehavior(imageControl), animation);
AnimationCache.IncrementReferenceCount(source, GetRepeatBehavior(imageControl));
return(animation);
}
return(null);
}