public CancellableTask<Pixbuf> FindBestPreview (int width, int height)
{
EnsureMipMap ();
var source = new CancellationTokenSource ();
var task = new ChildCancellableTask<MipMapFile, Pixbuf> (MipMapLoader, () => {
source.Token.ThrowIfCancellationRequested ();
return MipMapLoader.Result.FindBest (width, height);
}, source);
MipMapLoader.Request ();
task.Start ();
return task;
}
public Task<bool> IsBestPreview (int have_width, int have_height, int desired_width, int desired_height)
{
EnsureMipMap ();
var source = new CancellationTokenSource ();
var task = new ChildCancellableTask<MipMapFile, bool> (MipMapLoader, () => {
source.Token.ThrowIfCancellationRequested ();
return MipMapLoader.Result.IsBestSize (have_width, have_height, desired_width, desired_height);
}, source);
task.Start ();
return task;
}
