GNU bug report logs - #2530
23/NS: redraws according to mouse-face are slow

Previous Next

Full log

View this message in rfc822 format

From: David Reitter <david.reitter <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: bug#2530: 23/NS: redraws according to mouse-face are slow
Date: Sun, 1 Mar 2009 17:34:24 -0500

[Message part 1 (text/plain, inline)]

I find that the redisplay of overlays that happens when the mouse is  
moved into an overlay with a mouse-face property are much slower in  
Emacs 23 (NS, under Cocoa/OS X).  It is pretty much a nasty animation  
- every layer is redrawn from left to right, it seems, and every step  
is visible.  It seems that background is drawn first, and then the  
text over it.

The overlays I am working with are in the header-line; I'm using (an  
adapted version of) tabbar.el for this.  The resulting package is a  
not stand-alone and I'd have a hard time turning it into a small test  
case; before I work on this, I'd rather ask here if this problem is a  
known one.

I have experimented with calls to NSDisableScreenUpdates () in  
ns_update_begin, ns_update_window_begin and ns_focus, but that didn't  
help at all.

[smime.p7s (application/pkcs7-signature, attachment)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.