hi Fontconfig only provides a limited number of generic aliases. I am experimenting simulating a "generic alias" using an empty font and a set of fontconfig rules. Here is what I have done: I created an empty font using fontforge, containing only a few invisible glyphs such as .notdef. The font family name is set to "WenQuanYi Ray Song". I want to use 3 fonts to synthesize this font: Dejavu Serif, WenQuanYi Bitmap Song and AR PL UMing CN. I created a fontconfig file to combine these fonts so that 1) when rendering glyphs in the range of 11px~16px, Dejavu Serif will be used for non-CJK and WQY Bitmap Song will be used for CJK; 2) out of that range, vector glyphs in AR PL UMing CN will be selected for CJK. The font file and the config are attached. I used the following command to test the rules, and it worked fine:pango-view --font='WenQuanYi Ray Song' --text='文泉驿锐宋 Ray Song' --waterfall --dpi=32
However, I am seeing some wield stuff when I tried to set this font in the system appearance dialog. Under en_US locale, when I select "WenQuanYi Ray Song" from the gtk font selection dialog and click "regular" and "OK", "DejaVu Serif Book" will be shown as the font name instead. Because the font name is changed, the previous defined rules for Ray Song is no longer used. When I select this font under Chinese locale, the first available font style is not "Regular" anymore, it became the traditional Chinese family name of this font! (see attachment 3) Selecting it will also fall back to "DejaVu Serif Book". Finally, if you select the italic/bold/italicbold style, gtk font dialog is able to use "WenQuanYi Ray Song" as the font name. I am not sure which went wrong. The wrong font style may linked to fontconfig, while the font name changing may be related to gtk. Anyone want to comment on this? do you see a possible bug from these tests? Qianqian
Attachment:
wqy-raysong.ttf
Description: application/font-ttf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
<alias>
<family>WenQuanYi Ray Song</family>
<default><family>serif</family></default>
</alias>
<match target="pattern">
<test qual="any" compare="eq" name="family">
<string>WenQuanYi Ray Song</string>
<string>æ??æ³?é©¿é??å®?</string>
<string>æ??æ³?é©?é?³å®?</string>
</test>
<test compare="more" name="pixelsize">
<double>16</double>
</test>
<edit name="family" mode="prepend" binding="same">
<string>DejaVu Serif</string>
<string>AR PL UMing CN</string>
</edit>
</match>
<match target="pattern">
<test qual="any" compare="eq" name="family">
<string>WenQuanYi Ray Song</string>
<string>æ??æ³?é©¿é??å®?</string>
<string>æ??æ³?é©?é?³å®?</string>
</test>
<test compare="less" name="pixelsize">
<double>10</double>
</test>
<edit name="family" mode="prepend" binding="same">
<string>DejaVu Serif</string>
<string>AR PL UMing CN</string>
</edit>
</match>
<match target="pattern">
<test qual="any" compare="eq" name="family">
<string>WenQuanYi Ray Song</string>
<string>æ??æ³?é©¿é??å®?</string>
<string>æ??æ³?é©?é?³å®?</string>
</test>
<edit name="family" mode="prepend" binding="same">
<string>DejaVu Serif</string>
<string>WenQuanYi Bitmap Song</string>
</edit>
</match>
</fontconfig>
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