| 2013-12-06 13:21:57 |
Anthony Fok |
bug |
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added bug |
| 2013-12-06 13:22:40 |
Anthony Fok |
bug watch added |
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=714641 |
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| 2013-12-06 13:22:40 |
Anthony Fok |
bug task added |
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ttf-wqy-microhei (Debian) |
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| 2013-12-06 13:24:08 |
Anthony Fok |
bug watch added |
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http://code.google.com/p/chromium/issues/detail?id=85890 |
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| 2013-12-06 13:24:08 |
Anthony Fok |
bug task added |
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chromium-browser |
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| 2013-12-06 13:42:56 |
Anthony Fok |
bug task deleted |
chromium-browser |
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| 2013-12-06 14:07:04 |
Anthony Fok |
description |
The following Chromium Issue was reported on 2011-06-13:
"WenQuanYi Micro Hei" is rendered incorrectly on Linux
https://code.google.com/p/chromium/issues/detail?id=85890
with a screenshot that the Hangul glyphs were overlapping each other, and hence unreadable.
Using FontTools/TTX for analysis, e.g. by running
ttx -x glyf -y 0 wqy-microhei.ttc
an XML file is generated, showing the following Horizontal Matrix table:
<hmtx>
...
<mtx name="uni9FC0" width="2048" lsb="104"/>
<mtx name="uni9FC1" width="2048" lsb="96"/>
<mtx name="uni9FC2" width="2048" lsb="104"/>
<mtx name="uni9FC3" width="2048" lsb="112"/>
<mtx name="uniAC00" width="256" lsb="128"/>
<mtx name="uniAC01" width="256" lsb="112"/>
<mtx name="uniAC02" width="256" lsb="112"/>
<mtx name="uniAC03" width="256" lsb="112"/>
<mtx name="uniAC04" width="256" lsb="112"/>
...
<mtx name="uniAC6E" width="256" lsb="72"/>
<mtx name="uniAC6F" width="256" lsb="72"/>
<mtx name="uniAC70" width="2048" lsb="88"/>
<mtx name="uniAC71" width="256" lsb="72"/>
<mtx name="uniAC72" width="256" lsb="72"/>
...
<mtx name="uniACA6" width="256" lsb="72"/>
<mtx name="uniACA7" width="256" lsb="72"/>
<mtx name="uniACA8" width="2048" lsb="88"/>
<mtx name="uniACA9" width="256" lsb="72"/>
<mtx name="uniACAA" width="256" lsb="72"/>
...
<mtx name="uniD7A1" width="256" lsb="168"/>
<mtx name="uniD7A2" width="256" lsb="168"/>
<mtx name="uniD7A3" width="256" lsb="168"/>
<mtx name="uniF900" width="256" lsb="136"/>
<mtx name="uniF901" width="2048" lsb="104"/>
<mtx name="uniF902" width="2048" lsb="104"/>
<mtx name="uniF903" width="256" lsb="168"/>
<mtx name="uniF904" width="256" lsb="88"/>
<mtx name="uniF905" width="2048" lsb="216"/>
<mtx name="uniF906" width="2048" lsb="128"/>
<mtx name="uniF907" width="2048" lsb="96"/>
<mtx name="uniF908" width="2048" lsb="96"/>
<mtx name="uniF909" width="256" lsb="80"/>
<mtx name="uniF90A" width="2048" lsb="80"/>
<mtx name="uniF90B" width="256" lsb="160"/>
<mtx name="uniF90C" width="256" lsb="104"/>
<mtx name="uniF90D" width="256" lsb="80"/>
<mtx name="uniF90E" width="2048" lsb="72"/>
<mtx name="uniF90F" width="256" lsb="96"/>
<mtx name="uniF910" width="256" lsb="128"/>
<mtx name="uniF911" width="256" lsb="128"/>
...
<mtx name="uniFA25" width="2048" lsb="96"/>
<mtx name="uniFA26" width="256" lsb="104"/>
<mtx name="uniFA27" width="256" lsb="88"/>
<mtx name="uniFA28" width="256" lsb="88"/>
<mtx name="uniFA29" width="256" lsb="168"/>
<mtx name="uniFA2A" width="2048" lsb="80"/>
<mtx name="uniFA2B" width="256" lsb="80"/>
<mtx name="uniFA2C" width="2048" lsb="80"/>
<mtx name="uniFA2D" width="256" lsb="48"/>
...
</hmtx>
Apparently, WenQuanYi Micro Hei uses a horizontal advance width of 2048 for CJK characters by default, e.g.:
<mtx name="uni9FC0" width="2048" lsb="104"/>
<mtx name="uni9FC1" width="2048" lsb="96"/>
<mtx name="uni9FC2" width="2048" lsb="104"/>
<mtx name="uni9FC3" width="2048" lsb="112"/>
whereas DroidSansFallback.ttf uses a horizontal advance width of 256 for CJK characters by default.
Perhaps something went wrong when the Hangul (and related Korean Han fallback glyphs) from DroidSansFallback.ttf were merged into WenQuanYi Micro Hei? |
Hangul glyphs stack on top of one another, and hence unreadable, especially in Chromium browser.
See:
* https://code.google.com/p/chromium/issues/detail?id=85890
"WenQuanYi Micro Hei" is rendered incorrectly on Linux (2011-06-13)
* https://sourceforge.net/p/wqy/bugs/42/
WenQuanYiMicroHei hangul advance
(an anonymous user reported the problem upstream on 2013-03-29)
* https://code.google.com/p/chromium/issues/detail?id=233851
korean fonts stacking vertically onto eachother and/or replaced with pinyin
after updating to linux raring ringtail 13.04 (2013-04-19)
* http://bugs.debian.org/714641
ttf-wqy-microhei: Incorrect advanceWidths in hmtx for composite glyphs.
(with a suggested fix)
Using FontTools/TTX for analysis, e.g. by running:
ttx -x glyf -y 0 wqy-microhei.ttc
an XML file is generated, showing the following Horizontal Matrix table:
<hmtx>
...
<mtx name="uni9FC0" width="2048" lsb="104"/>
<mtx name="uni9FC1" width="2048" lsb="96"/>
<mtx name="uni9FC2" width="2048" lsb="104"/>
<mtx name="uni9FC3" width="2048" lsb="112"/>
<mtx name="uniAC00" width="256" lsb="128"/>
<mtx name="uniAC01" width="256" lsb="112"/>
<mtx name="uniAC02" width="256" lsb="112"/>
<mtx name="uniAC03" width="256" lsb="112"/>
<mtx name="uniAC04" width="256" lsb="112"/>
...
<mtx name="uniAC6E" width="256" lsb="72"/>
<mtx name="uniAC6F" width="256" lsb="72"/>
<mtx name="uniAC70" width="2048" lsb="88"/>
<mtx name="uniAC71" width="256" lsb="72"/>
<mtx name="uniAC72" width="256" lsb="72"/>
...
<mtx name="uniACA6" width="256" lsb="72"/>
<mtx name="uniACA7" width="256" lsb="72"/>
<mtx name="uniACA8" width="2048" lsb="88"/>
<mtx name="uniACA9" width="256" lsb="72"/>
<mtx name="uniACAA" width="256" lsb="72"/>
...
<mtx name="uniD7A1" width="256" lsb="168"/>
<mtx name="uniD7A2" width="256" lsb="168"/>
<mtx name="uniD7A3" width="256" lsb="168"/>
<mtx name="uniF900" width="256" lsb="136"/>
<mtx name="uniF901" width="2048" lsb="104"/>
<mtx name="uniF902" width="2048" lsb="104"/>
<mtx name="uniF903" width="256" lsb="168"/>
<mtx name="uniF904" width="256" lsb="88"/>
<mtx name="uniF905" width="2048" lsb="216"/>
<mtx name="uniF906" width="2048" lsb="128"/>
<mtx name="uniF907" width="2048" lsb="96"/>
<mtx name="uniF908" width="2048" lsb="96"/>
<mtx name="uniF909" width="256" lsb="80"/>
<mtx name="uniF90A" width="2048" lsb="80"/>
<mtx name="uniF90B" width="256" lsb="160"/>
<mtx name="uniF90C" width="256" lsb="104"/>
<mtx name="uniF90D" width="256" lsb="80"/>
<mtx name="uniF90E" width="2048" lsb="72"/>
<mtx name="uniF90F" width="256" lsb="96"/>
<mtx name="uniF910" width="256" lsb="128"/>
<mtx name="uniF911" width="256" lsb="128"/>
...
<mtx name="uniFA25" width="2048" lsb="96"/>
<mtx name="uniFA26" width="256" lsb="104"/>
<mtx name="uniFA27" width="256" lsb="88"/>
<mtx name="uniFA28" width="256" lsb="88"/>
<mtx name="uniFA29" width="256" lsb="168"/>
<mtx name="uniFA2A" width="2048" lsb="80"/>
<mtx name="uniFA2B" width="256" lsb="80"/>
<mtx name="uniFA2C" width="2048" lsb="80"/>
<mtx name="uniFA2D" width="256" lsb="48"/>
...
</hmtx>
Apparently, WenQuanYi Micro Hei uses a horizontal advance width of 2048 for CJK characters by default, e.g.:
<mtx name="uni9FC0" width="2048" lsb="104"/>
<mtx name="uni9FC1" width="2048" lsb="96"/>
<mtx name="uni9FC2" width="2048" lsb="104"/>
<mtx name="uni9FC3" width="2048" lsb="112"/>
whereas DroidSansFallback.ttf uses a horizontal advance width of 256 for CJK characters by default.
Perhaps something went wrong when the Hangul (and related Korean Han fallback glyphs) from DroidSansFallback.ttf were merged into WenQuanYi Micro Hei? |
|
| 2013-12-06 14:07:21 |
Anthony Fok |
bug |
|
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added subscriber Qianqian Fang |
| 2013-12-06 14:07:54 |
Anthony Fok |
bug |
|
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added subscriber ZhengPeng Hou |
| 2013-12-06 14:08:49 |
Anthony Fok |
bug watch added |
|
http://code.google.com/p/chromium/issues/detail?id=233851 |
|
| 2013-12-06 14:08:49 |
Anthony Fok |
bug task added |
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chromium-browser |
|
| 2013-12-06 14:09:03 |
Anthony Fok |
bug task deleted |
chromium-browser |
|
|
| 2013-12-06 14:44:26 |
Bug Watch Updater |
ttf-wqy-microhei (Debian): status |
Unknown |
New |
|
| 2013-12-07 02:38:55 |
Anthony Fok |
ttf-wqy-microhei (Ubuntu): status |
New |
Confirmed |
|
| 2013-12-09 15:52:45 |
Bug Watch Updater |
ttf-wqy-microhei (Debian): status |
New |
Confirmed |
|
| 2013-12-12 14:09:47 |
Joonas Saarinen |
bug |
|
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added subscriber Joonas Saarinen |
| 2013-12-28 04:17:29 |
Launchpad Janitor |
branch linked |
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lp:~ubuntu-branches/debian/sid/fonts-wqy-microhei/sid |
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| 2014-01-02 14:22:27 |
Bug Watch Updater |
ttf-wqy-microhei (Debian): status |
Confirmed |
Fix Released |
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