public CommandPacket(string path, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer)
{
this.File = null;
this.path = path;
this.Observer = observer;
this.Option = option;
}
public CommandPacket(Record file, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer)
{
this.File = file;
this.path = null;
this.Observer = observer;
this.Option = option;
}
private void RequestLoadingToTask
(Record file, string path, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer,
bool hasPriority, CancellationToken token)
{
if ((file != null || path != null) && !token.IsCancellationRequested)
{
this.RequestLoadingMain(file, path, option, observer, hasPriority, token);
}
}
private void RequestLoadingMain
(Record file, string path, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer,
bool hasPriority, CancellationToken token)
{
var filePath = file?.FullPath ?? path;
if (filePath == null)
{
return;
}
if (observer == null)
{
observer = emptyObserver;
}
if (this.TryGetImage(filePath, option.Quality, out var image))
{
if (image != null && image.Image != null)
{
if (file != null && (file.Width <= 0 || file.Height <= 0) &&
image.Information != null)
{
file.Width = image.Information.GraphicSize.Width;
file.Height = image.Information.GraphicSize.Height;
}
observer.OnNext(image);
observer.OnCompleted();
return;
}
}
if (this.MetaImageExtention != null &&
this.MetaImageExtention.Contains(System.IO.Path.GetExtension(filePath).ToLower()))
{
observer.OnCompleted();
return;
}
var request = (file != null)
? new CommandPacket(file, option.Clone(), observer)
: new CommandPacket(filePath, option.Clone(), observer);
request.CancellationToken = token;
if (option.Quality == ImageQuality.ThumbNail)
{
this.thumbNailLoadRequest.Enqueue(request);
}
else if (hasPriority)
{
this.currentFileLoadRequest.Enqueue(request);
}
else if (option.Quality == ImageQuality.LowQuality)
{
this.lowQualityPreLoadRequest.Enqueue(request);
}
else
{
this.highQualityPreLoadRequest.Enqueue(request);
}
if (this.ActionQueueSubject.HasObservers)
{
this.ActionQueueSubject.OnNext(Unit.Default);
}
}
public void RequestLoading
(string path, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer,
bool hasPriority, CancellationToken token)
=> this.RequestLoadingToTask(null, path, option, observer, hasPriority, token);
public void RequestLoading
(Record file, ImageLoadingOptions option, IObserver <ImageSourceContainer> observer,
bool hasPriority, CancellationToken token)
=> this.RequestLoadingToTask(file, file?.FullPath, option, observer, hasPriority, token);
