public void Load(SafeUri uri)
{
if (is_disposed)
{
return;
}
//First, send a thumbnail if we have one
if ((thumb = App.Instance.Container.Resolve <IThumbnailService> ().TryLoadThumbnail(uri, ThumbnailSize.Large)) != null)
{
pixbuf_orientation = ImageOrientation.TopLeft;
AreaPrepared?.Invoke(this, new AreaPreparedEventArgs(true));
AreaUpdated?.Invoke(this, new AreaUpdatedEventArgs(new Rectangle(0, 0, thumb.Width, thumb.Height)));
}
using (var image_file = App.Instance.Container.Resolve <IImageFileFactory> ().Create(uri)) {
image_stream = image_file.PixbufStream();
pixbuf_orientation = image_file.Orientation;
}
Loading = true;
// The ThreadPool.QueueUserWorkItem hack is there cause, as the bytes to read are present in the stream,
// the Read is CompletedAsynchronously, blocking the mainloop
image_stream.BeginRead(buffer, 0, count, delegate(IAsyncResult r) {
ThreadPool.QueueUserWorkItem(delegate {
HandleReadDone(r);
});
}, null);
}
void HandleReadDone(IAsyncResult ar)
{
if (is_disposed)
{
return;
}
int byte_read = image_stream.EndRead(ar);
lock (sync_handle) {
if (byte_read == 0)
{
image_stream.Close();
Close();
Loading = false;
notify_completed = true;
}
else
{
try {
if (!is_disposed && Write(buffer, (ulong)byte_read))
{
image_stream.BeginRead(buffer, 0, count, HandleReadDone, null);
}
} catch (ObjectDisposedException) {
} catch (GLib.GException) {
}
}
}
GLib.Idle.Add(delegate {
//Send the AreaPrepared event
if (notify_prepared)
{
notify_prepared = false;
if (thumb != null)
{
thumb.Dispose();
thumb = null;
}
AreaPrepared?.Invoke(this, new AreaPreparedEventArgs(false));
}
//Send the AreaUpdated events
if (damage != Rectangle.Zero)
{
AreaUpdated?.Invoke(this, new AreaUpdatedEventArgs(damage));
damage = Rectangle.Zero;
}
//Send the Completed event
if (notify_completed)
{
notify_completed = false;
OnCompleted();
}
return(false);
});
}
