Re: XEmacs has just (more than) doubled in size

At 06:11 PM 8/23/99 +0900, Stephen J. Turnbull wrote: Andy> Did it flicker without this change? No. That platform (Gateway Solo 2000, C&T 65555, XF86_SVGA, Linux) flickered in the very early implementation (at the time of Steve Baur's first reports). Many things since then have changed, and I have observed no flicker since the early fixes. Since no expose events are generated while the glyph/subwindow is unmapped, that should reduce flicker in this case as I understand the theory. I can only say that on my platform it doesn't increase flicker, so it's worth a try. Andy> If it works for you then I'll put it in. Hmm. I managed to get a lot of flicker with this build today, by dragging one frame over another's tab control area. I also saw it when I created a new frame with C-x 5 b and it happened (Window Maker wm with RandomPlacement set) to partially obscure an existing frame's tab control area. I couldn't reproduce with an xterm over XEmacs, but that won't exercise XEmacs redisplay in the same way. It's intermittent but common with XEmacs frame over frame. Even when it doesn't flicker, the whole tab area disappears for a perceptible time. Not good if it can be avoided. Maybe it's not such a good idea. Window Maker is set to opaque drag, though, and this produces a "poor man's bold" effect in the dragged window, and a ripple of redisplay in the obscured one, it's such a bandwidth hog (and those effects _always_ happen). Andy> I don't understand. Execute src/xemacs -q src/*{glyphs,redisplay}*.[ch] & See that tabs are redisplay-msw.c and glyphs.h; buffers are redisplay.[ch] Now C-x 1 to redisplay.h; C-x 5 b glyphs.h Rearrange the frames to overlap: ------------------------------------------------------------------------ ------------------------------------------------------------------------ Frame 2 tabs are redisplay-{output,msw}.c Click frame 2 to redisplay-msw.c. Frame 2 tabs are glyphs.h redisplay.h redisplay.c redisplay-x.c redisplay-tty.c ------------------------------------------------------------------------ ------------------------------------------------------------------------ Raise frame 1 over frame 2, then raise frame 2. Now frame 2 tabs are redisplay-{tty,output}.c ------------------------------------------------------------------------ ------------------------------------------------------------------------ Perfectly reproducible, so I can't call it random. "Chaos", anyone? -- University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Institute of Policy and Planning Sciences Tel/fax: +81 (298) 53-5091 __________________________________________________________________________ __________________________________________________________________________ What are those two straight lines for? "Free software rules."