public void QueueThreadedDraw(Action <Cairo.Context> drawCallback)
{
if (!owner.IsRealized)
{
return;
}
runningSignal.Wait();
UpdateScale();
if (surface == null || surface.Height != TargetHeight || surface.Width != TargetWidth)
{
using (var similar = Gdk.CairoHelper.Create(owner.GdkWindow)) {
if (surface != null)
{
surface.Dispose();
}
surface = new SurfaceWrapper(similar, TargetWidth, TargetHeight);
}
}
runningSignal.Reset();
this.OnDraw(drawCallback);
//ThreadPool.QueueUserWorkItem (new WaitCallback (this.OnDraw), drawCallback);
owner.QueueDraw();
}
