Re: Tabs' background pixmap

Hrvoje Niksic wrote: This is related to something I planned to investigate on a while ago. The problem is that in XEmacs, the way to specify a background pixmap is hacky: it's done by setting the default face's background pixmap, which plays a particular role. This is semantically incorrect since what you want to do is really use a background pixmap for the /whole/ text area, or even the whole frame. Ideally, you should be able to do that, and to specify, say, another background pixmap for the default face, which would be drawn under the characters, but *only* under them. As a consequence of the current design, there can be no inheritance of the backgrond pixmap between X windows because (AFAIK) the corresponding X window attribute is simply not used. Although I'm not very positive about this, there could be a potential gain of efficiency in redisplay if we used background pixmaps in the X sense (meaning for instance that XClearWindow and stuff would actually redraw the pixmap). I'm not completely sure, however, that there would be a substantial gain compared to clearing the areas manually (by filling them with the pixmap) as it is done now. It would at least save us some GC context switches. -- / / _ _ Didier Verna http://www.inf.enst.fr/~verna/ - / / - / / /_/ / EPITA / LRDE mailto:didier＠epita.fr /_/ / /_/ / /__ / 14-16 rue Voltaire Tel. +33 (1) 44 08 01 77 94276 Kremlin-Bicêtre cedex Fax. +33 (1) 44 08 01 99