>Hi all, > >I'm porting an app to gtk2 and I've come across some performance problems caused (I think) by > gtk's new expose event compression system. > >One of the app's widgets is an image display window, and one of the tools is a panner. Pure l >eft/right and up/down pans are fast and smooth, but diagonal drags are very choppy. I think t >his is because gtk is sending me the bounding box of all exposes since the last repaint, and >for a diagonal drag, the bounding box of a thin strip down the right and a thin strip across >the bottom is the entire window. > >Has anyone come across this before, and is there an easy solution? there's a flag in the expose event structure that indicates that there are more expose events pending. its often a nice optimization to delay updates until the "last" expose event. sometimes, though, it can lead to the wrong thing. _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
