Bug 2715 - libxft is calculatint wrong width of CJK fonts
Summary: libxft is calculatint wrong width of CJK fonts
Alias: None
Product: xorg
Classification: Unclassified
Component: Lib/Xft (show other bugs)
Version: unspecified
Hardware: x86 (IA32) All
: high normal
Assignee: Keith Packard
QA Contact:
Whiteboard: 2011BRB_Reviewed
Keywords: patch
: 2716 (view as bug list)
Depends on:
Reported: 2005-03-12 16:04 UTC by Funda Wang
Modified: 2018-06-12 19:08 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Patch to libxft 2.1.6 (3.20 KB, patch)
2005-03-12 16:05 UTC, Funda Wang
no flags Details | Splinter Review

Description Funda Wang 2005-03-12 16:04:13 UTC
Currently, libxft is using font->public.max_advance_width to get the width of 
glyphs. But this is not the case in CJK environments. CJK fonts often include 
both full-width and half-width glyphs, while those glyphs are using different 
width of course. public.max_advance_width makes all the half-width glyphs become 
Comment 1 Funda Wang 2005-03-12 16:05:42 UTC
Created attachment 2091 [details] [review]
Patch to libxft 2.1.6

Do not use public.max_advance_width to get the width of certain glyph, use
glyphslot->metrics.vertAdvance and glyphslot->metrics.horiAdvance instead.
Comment 2 Funda Wang 2005-03-18 14:09:02 UTC
*** Bug 2716 has been marked as a duplicate of this bug. ***
Comment 3 Funda Wang 2005-10-17 22:25:16 UTC
How is it going?
Comment 4 Funda Wang 2005-12-11 19:50:50 UTC
Still valid in latest CVS.
Comment 5 Jeremy Huddleston Sequoia 2011-10-10 12:40:26 UTC
If this is still an issue, can you please send your patch to xorg-devel for 
Comment 6 Adam Jackson 2018-06-12 19:08:42 UTC
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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