public async Task <FormsCAKeyFrameAnimation> LoadImageAnimationAsync(ImageSource imagesource, CancellationToken cancelationToken = default(CancellationToken), float scale = 1)
{
FormsCAKeyFrameAnimation animation = await ImageAnimationHelper.CreateAnimationFromUriImageSourceAsync(imagesource as UriImageSource, cancelationToken).ConfigureAwait(false);
if (animation == null)
{
Log.Warning(nameof(FileImageSourceHandler), "Could not find image: {0}", imagesource);
}
return(animation);
}
public Task <FormsCAKeyFrameAnimation> LoadImageAnimationAsync(ImageSource imagesource, CancellationToken cancelationToken = default(CancellationToken), float scale = 1)
{
FormsCAKeyFrameAnimation animation = ImageAnimationHelper.CreateAnimationFromFileImageSource(imagesource as FileImageSource);
if (animation == null)
{
Log.Warning(nameof(FileImageSourceHandler), "Could not find image: {0}", imagesource);
}
return(Task.FromResult(animation));
}
static public FormsCAKeyFrameAnimation CreateAnimationFromFileImageSource(FileImageSource imageSource)
{
FormsCAKeyFrameAnimation animation = null;
string file = imageSource?.File;
if (!string.IsNullOrEmpty(file))
{
using (var parsedImageSource = CGImageSource.FromUrl(NSUrl.CreateFileUrl(file, null)))
{
animation = ImageAnimationHelper.CreateAnimationFromCGImageSource(parsedImageSource);
}
}
return(animation);
}
static public async Task <FormsCAKeyFrameAnimation> CreateAnimationFromUriImageSourceAsync(UriImageSource imageSource, CancellationToken cancelationToken = default(CancellationToken))
{
FormsCAKeyFrameAnimation animation = null;
if (imageSource?.Uri != null)
{
using (var streamImage = await imageSource.GetStreamAsync(cancelationToken).ConfigureAwait(false))
{
if (streamImage != null)
{
using (var parsedImageSource = CGImageSource.FromData(NSData.FromStream(streamImage)))
{
animation = ImageAnimationHelper.CreateAnimationFromCGImageSource(parsedImageSource);
}
}
}
}
return(animation);
}