/etc/fonts/local.conf

谢谢 linuxsir 的 quanliking， 参考 http://www.linuxsir.org/bbs/showthread.php?t=266659

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">

<!-- /etc/fonts/local.conf file to configure system font access -->
<fontconfig>
<!--
   Target dots per inch, change 96 to yours
 -->
        <match target="pattern" >
                <edit name="dpi" mode="assign" >
                        <double>96</double>
                </edit>
        </match>

<!--
   Enable sub-pixel rendering.
   If you are using CRT, set rgb -> none
-->
   <match target="font">
      <edit name="rgba" mode="assign">
         <const>none</const>
      </edit>
   </match>

<!--
   Default Fonts setting
   here autohint = ture / hinting = false is for free fonts in your system
   we will use autohint = false / hinting = true for MS core fonts
 -->
        <match target="font" >
                <edit name="antialias" mode="assign" >
                        <bool>true</bool>
                </edit>
                <edit name="autohint" mode="assign" >
                        <bool>true</bool>
                </edit>
                <edit name="hinting" mode="assign" >
                        <bool>false</bool>
                </edit>
                <edit name="hintstyle" mode="assign" >
                        <const>hintfull</const>
                </edit>
        </match>

<!--
   fonts alias settings
-->
   <match target="pattern">
      <test name="family">
         <string>宋体</string>
      </test>
      <edit name="family" mode="assign">
         <string>SimSun</string>
      </edit>
   </match>
   <match target="pattern">
      <test name="family">
         <string>新宋体</string>
      </test>
      <edit name="family" mode="assign">
         <string>NSimSun</string>
      </edit>
   </match>

<!--
  Mark common families with their generics so we'll get
  something reasonable
 -->
  <!--
    Sans-serif faces
   -->
        <alias>
                <family>Tahoma</family>
                <family>Arial</family>
                <family>Verdana</family>
                <family>WenQuanYi Bitmap Song</family>
                <family>SimSun</family>
                <family>PMingLiU</family>
                <family>Comic Sans MS</family>
                <default>
                        <family>sans-serif</family>
                </default>
        </alias>
  <!--
    Serif faces
   -->
        <alias>
                <family>Georgia</family>
                <family>Times New Roman</family>
                <family>WenQuanYi Bitmap Song</family>
                <family>SimSun</family>
                <family>PMingLiU</family>
                <default>
                        <family>serif</family>
                </default>
        </alias>
  <!--
    Monospace faces
   -->
        <alias>
                <family>Courier New</family>
                <family>Andale Mono</family>
                <family>NSimSun</family>
                <family>MingLiU</family>
                <default>
                        <family>monospace</family>
                </default>
        </alias>

<!--
   Alias well known font names to MS TrueType fonts.
   These substitute TrueType faces for similar Type1
   faces to improve screen appearance.
-->
        <alias>
                <family>Times</family>
                <prefer>
                        <family>Times New Roman</family>
                </prefer>
                <default>
                        <family>serif</family>
                </default>
        </alias>
        <alias>
                <family>Helvetica</family>
                <prefer>
                        <family>Arial</family>
                </prefer>
                <default>
                        <family>sans-serif</family>
                </default>
        </alias>
        <alias>
                <family>Courier</family>
                <prefer>
                        <family>Courier New</family>
                </prefer>
                <default>
                        <family>monospace</family>
                </default>
        </alias>

<!--
   Provide required aliases for standard names
 -->
        <alias>
                <family>sans-serif</family>
                <prefer>
                        <family>Tahoma</family>
                        <family>Arial</family>
                        <family>Verdana</family>
                        <family>WenQuanYi Bitmap Song</family>
                        <family>SimSun</family>
                        <family>PMingLiU</family>
                        <family>Comic Sans MS</family>
                </prefer>
        </alias>
        <alias>
                <family>serif</family>
                <prefer>
                        <family>Georgia</family>
                        <family>Times New Roman</family>
                        <family>WenQuanYi Bitmap Song</family>
                        <family>SimSun</family>
                        <family>PMingLiU</family>
                </prefer>
        </alias>
        <alias>
                <family>monospace</family>
                <prefer>
                        <family>Courier New</family>
                        <family>Andale Mono</family>
                        <family>NSimSun</family>
                        <family>MingLiU</family>
                </prefer>
        </alias>

<!--
   SimSun english portion substitutionsubstitution
-->
   <match target="pattern">
      <test name="family" >
         <string>SimSun</string>
      </test>
        <edit name="family" mode="prepend" binding="strong">
         <string>Tahoma</string>
      </edit>
   </match>

<!--
   NSimSun english portion substitutionsubstitution
-->
   <match target="pattern">
      <test name="family" >
         <string>NSimSun</string>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Courier New</string>
      </edit>
   </match>

<!--
   Courier substitution
-->
   <match target="pattern">
      <test name="family" >
         <string>Courier</string>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Courier New</string>
      </edit>
   </match>

<!--
   Bold Tahoma/Verdana substitution:
   when its size more than 20px,substitution with Bold Arial
-->
   <match target="pattern">
      <test name="family" >
         <string>Tahoma</string>
         <string>Verdana</string>
      </test>
      <test name="weight" compare="more_eq">
         <int>180</int>
      </test>
      <test name="pixelsize" compare="more_eq" >
         <double>20</double>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Arial</string>
      </edit>
   </match>

<!--
   Font size settings:
   set the apposite font size,so it's easy to be read
-->
   <match target="pattern" >
      <test name="pixelsize" compare="more_eq" >
         <double>8</double>
      </test>
      <test name="pixelsize" compare="less_eq" >
         <double>12</double>
      </test>
      <edit name="pixelsize" mode="assign" >
         <double>12</double>
      </edit>
   </match>

<!--
   Artificial oblique for fonts without an italic or oblique version
-->
   <match target="font">
      <!-- check to see if the font is roman -->
      <test name="slant">
         <const>roman</const>
      </test>
      <!-- check to see if the pattern requested non-roman -->
      <test target="pattern" name="slant" compare="not_eq">
         <const>roman</const>
      </test>
      <!-- multiply the matrix to slant the font -->
      <edit name="matrix" mode="assign">
         <times>
            <name>matrix</name>
            <matrix>
               <double>1</double><double>0.2</double>
               <double>0</double><double>1</double>
            </matrix>
         </times>
      </edit>
      <!-- pretend the font is oblique now -->
      <edit name="slant" mode="assign">
         <const>oblique</const>
      </edit>
   </match>

<!--
   Synthetic emboldening for fonts that do not have bold face available
-->
   <match target="font">
      <!-- check to see if the font is just regular -->
      <test name="weight" compare="less_eq">
         <int>100</int>
      </test>
      <!-- check to see if the pattern requests bold -->
      <test target="pattern" name="weight" compare="more_eq">
         <int>180</int>
      </test>
      <!-- set the embolden flag -->
      <edit name="embolden" mode="assign">
         <bool>true</bool>
      </edit>
   </match>

<!--
   The dual-width Asian fonts (spacing=dual) are not rendered correctly,
   apparently FreeType forces all widths to match. Trying to disable the
   width forcing code by setting globaladvance=false alone doesn't  help.
   As a brute force workaround, also set spacing=proportional, i.e. handle
   them as proportional fonts:
-->
   <match target="font">
      <test name="lang" compare="contains" >
         <string>zh</string>
         <string>ja</string>
         <string>ko</string>
      </test>
      <edit name="spacing" mode="assign" >
         <const>proportional</const>
      </edit>
      <edit name="globaladvance" mode="assign" >
         <bool>false</bool>
      </edit>
   </match>

<!--
   CJK antialias settings:
   when font size (in pixel) between 8 and 20px
-->
   <match target="font" >
      <test name="lang" compare="contains" >
         <string>zh</string>
         <string>ja</string>
         <string>ko</string>
      </test>
      <test name="pixelsize" compare="more_eq" >
         <double>8</double>
      </test>
      <test name="pixelsize" compare="less_eq" >
         <double>20</double>
      </test>
      <edit name="antialias" mode="assign" >
         <bool>false</bool>
      </edit>
      <edit name="autohint" mode="assign" >
         <bool>false</bool>
      </edit>
      <edit name="hinting" mode="assign" >
         <bool>false</bool>
      </edit>
   </match>

<!--
   CJK antialias settings:
   when font size (in pixel) more than 20px, enable AA.
-->
   <match target="font" >
      <test name="lang" compare="contains" >
         <string>zh</string>
         <string>ja</string>
         <string>ko</string>
      </test>
      <test name="pixelsize" compare="more_eq" >
         <double>20</double>
      </test>
      <edit name="antialias" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="autohint" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="hinting" mode="assign" >
         <bool>true</bool>
      </edit>
   </match>

<!--
   Italic CJK fonts,enable AA
-->
   <match target="font">
      <test name="lang" compare="contains" >
         <string>zh</string>
         <string>ja</string>
         <string>ko</string>
      </test>
      <test name="slant" compare="not_eq">
         <const>roman</const>
      </test>
      <edit name="antialias" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="autohint" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="hinting" mode="assign" >
         <bool>true</bool>
      </edit>
   </match>

<!--
   Microsoft fonts settings
-->
<!--
   default : smoothed and hinted
-->
   <match target="font" >
      <test name="foundry" >
         <string>monotype</string>
         <string>microsoft</string>
      </test>
      <edit name="antialias" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="autohint" mode="assign" >
         <bool>false</bool>
      </edit>
      <edit name="hinting" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="hintstyle" mode="assign" >
         <const>hintfull</const>
      </edit>
   </match>

<!--
   Courier New:
   both enable autohint and hinting looks very well.
-->
   <match target="font" >
      <test name="family" >
         <string>Courier</string>
         <string>Courier New</string>
      </test>
      <edit name="antialias" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="autohint" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="hinting" mode="assign" >
         <bool>true</bool>
      </edit>
      <edit name="hintstyle" mode="assign" >
         <const>hintfull</const>
      </edit>
   </match>

<!--
   Courier New font size
-->
   <match target="font" >
      <test name="family" >
         <string>Courier New</string>
      </test>
      <test name="pixelsize" compare="less_eq" >
         <double>14.7</double>
      </test>
      <edit name="pixelsize" mode="assign" >
         <double>14.7</double>
      </edit>
   </match>

</fontconfig>