Comment 1 for bug 912642

The linked branch implements show/hide of the controls on mouse move/3 seconds timeout. As far as I can see it works fine. The only point is that I recreate/add the timeout very often (every mouse move while controls visible) since I do not know a better way, but it does not seem to harm performance.

Let me know if it's ok, or if you prefer some changes. Otherwise you can pull it into trunk.