public void Attach(TopLevel topLevel)
{
var resources = new List <IDisposable>();
var initialClientSize = topLevel.PlatformImpl.ClientSize;
var queueManager = ((IRenderRoot)topLevel).RenderQueueManager;
if (queueManager == null)
{
return;
}
var viewport = PlatformManager.CreateRenderTarget(topLevel.PlatformImpl);
resources.Add(viewport);
//resources.Add(queueManager.RenderNeeded.Subscribe(_
// =>
// Dispatcher.UIThread.InvokeAsync(() => topLevel.PlatformImpl.Invalidate(new Rect(topLevel.ClientSize)))));
Action pendingInvalidation = null;
resources.Add(queueManager.RenderNeeded.Subscribe(_ =>
{
if (pendingInvalidation == null)
{
pendingInvalidation = () =>
{
topLevel.PlatformImpl.Invalidate(new Rect(topLevel.ClientSize));
pendingInvalidation = null;
};
Dispatcher.UIThread.InvokeAsync(pendingInvalidation);
}
}
));
topLevel.PlatformImpl.Paint = rect =>
{
viewport.Render(topLevel);
queueManager.RenderFinished();
};
topLevel.Closed += delegate
{
foreach (var disposable in resources)
{
disposable.Dispose();
}
resources.Clear();
};
}