/// <inheritdoc />
public IObservable <ImageHandle> LoadImage(string path, IScheduler executionScheduler = null)
{
Guard.Against.ArgumentNullOrEmpty(path, nameof(path));
executionScheduler ??= RxApp.TaskpoolScheduler;
return(Observable.Create <ImageHandle>(observer =>
{
CompositeDisposable disposable = new CompositeDisposable();
ImageHandle handle = default;
SKCodec codec = default;
IDisposable scheduling = executionScheduler.Schedule(() =>
{
try
{
codec = SKCodec.Create(path) ?? throw new ImageLoadingException(path);
codec.DisposeWith(disposable);
var bitmap = SKBitmap.Decode(codec);
var format = codec.EncodedFormat == SKEncodedImageFormat.Gif ? SKEncodedImageFormat.Png : codec.EncodedFormat;
handle = new ImageHandle(path, bitmap, format);
observer.OnNext(handle);
}
catch (Exception ex)
{
observer.OnError(ex);
}
observer.OnCompleted();
}).DisposeWith(disposable);
return disposable;
}));
}