Bug 130159

Summary:	Improve scrolling speed of GtkFontSelection's font/style/size lists.
Product:	[openSUSE] SUSE Linux 10.1	Reporter:	Zhe Su <zsu>
Component:	GNOME	Assignee:	Gary Ekker <gekker>
Status:	RESOLVED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None	CC:	federico
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	Patch against gtk+ 2.8.6

Description Zhe Su 2005-10-22 16:11:47 UTC

When selecting a new font,style or size in GtkFontSelection, the speed of
updating preview string is very slow, because creating information of a new font
in pango/fontconfig is very slow. So it's very hard for users to scroll the
lists by cursors.

The attached patch solves this issue by moving the font update code into an
async function.

SA: http://bugzilla.gnome.org/show_bug.cgi?id=319483

Comment 1 Zhe Su 2005-10-22 16:12:31 UTC

Created attachment 55155 [details]
Patch against gtk+ 2.8.6

Comment 2 Zhe Su 2005-10-24 12:03:45 UTC

See also upstreaming bug report http://bugzilla.gnome.org/show_bug.cgi?id=319483

Comment 3 JP Rosevear 2005-12-23 12:56:13 UTC

Federico, Are you able to poke upstream on this and/or approve this patch for our gtk2?

Comment 4 Federico Mena Quintero 2005-12-29 01:57:43 UTC

Sure, let's take care of it upstream.

In the meantime, feel free to put the patch as it is in our Pango package.  I think it needs some changes before it can go into CVS.

Comment 5 Federico Mena Quintero 2006-01-10 18:32:08 UTC

Did this patch go in?  Zhe, do you need help in putting it in our Pango package?

Comment 6 Zhe Su 2006-01-11 03:09:14 UTC

I need your help on submitting it into autobuild. It's very inconvenient for me to update the package, because I can only work with build.net right now.

Comment 7 JP Rosevear 2006-01-11 14:38:29 UTC

Re-assigning to Gary for submission.

Comment 8 Gary Ekker 2006-01-18 02:34:45 UTC

Submitted for beta 2.

Federico, if you could give this a nudge upstream, it seems to have stalled there.

Comment 9 Federico Mena Quintero 2006-01-18 15:43:23 UTC

Sorry for not updating the bug.  We are discussing this in performance-list.  It turns out that people have looked into optimizing FcFontSort (the culprit), but it's not easy.