On Wed, 2011-07-20 at 02:54 +0300, Ville Syrjälä wrote: > BTW I noticed afterwards that this doesn't help all apps. Evince, for > example, still blinks whenever I bring up the popup menu while in > fullscreen mode, whereas Firefox doesn't blink. I did some quick > protocol tracing and I saw some window background mode changes from > the client. A quick look at gdk-x11 code revealed that it does some > tricks with the window background. I never got around to testing if > removing that code would make Evince blink-free (tm).
Interesting... there are certainly tricks being played there, but it's hard to see why they would cause blinking. When GTK+ maps an override-redirect window, it temporarily sets the background of the override-redirect window to None. When it unmaps a window, in some cases, it will temporarily unset the background of a window that it thinks it might be underneath. But the background mode of a client window should have no effect at all on whether it's contents are preserved in the composite pixmap. Changing the background mode doesn't cause a clear. The only thing I can think of is that evince might be changing it's size when popping up the menu, but that seems pretty strange. Hard to guess at without a live situation to debug. - Owen _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
