conf.d/10-scale-bitmap-fonts.conf

   1 <?xml version="1.0"?>
   2 <!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
   3 <fontconfig>
   4   <description>Bitmap scaling</description>
   5 <!--
   6   If font is bitmap, calculate scale factor.
   7   Note that color bitmap fonts have scalable=true, while
   8   non-color ones have scalable=false.  Both groups have outline=false.
   9   -->
  10 <match target="font">
  11   <test name="outline" compare="eq">
  12     <bool>false</bool>
  13   </test>
  14   <edit name="pixelsizefixupfactor" mode="assign">
  15     <divide>
  16       <name target="pattern">pixelsize</name>
  17       <name target="font"   >pixelsize</name>
  18     </divide>
  19   </edit>
  20 </match>
  21 <!--
  22   For non-scalable bitmap fonts (ie. non-color), skip
  23   minor scaling if hinting is enabled.
  24   -->
  25 <match target="font">
  26   <test name="outline" compare="eq">
  27     <bool>false</bool>
  28   </test>
  29   <test name="scalable" compare="eq">
  30     <bool>false</bool>
  31   </test>
  32   <test name="hinting" compare="eq">
  33     <bool>true</bool>
  34   </test>
  35   <edit name="scalingnotneeded" mode="assign">
  36     <and>
  37       <less>
  38         <name>pixelsizefixupfactor</name>
  39         <double>1.2</double>
  40       </less>
  41       <more>
  42         <name>pixelsizefixupfactor</name>
  43         <double>0.8</double>
  44       </more>
  45     </and>
  46   </edit>
  47 </match>
  48 <match target="font">
  49   <test name="scalingnotneeded" compare="eq">
  50     <bool>true</bool>
  51   </test>
  52   <edit name="pixelsizefixupfactor" mode="assign">
  53     <double>1.0</double>
  54   </edit>
  55 </match>
  56 <!--
  57   If we *are* going to scale, go ahead and do it.
  58   -->
  59 <match target="font">
  60   <test name="outline" compare="eq">
  61     <bool>false</bool>
  62   </test>
  63   <test name="pixelsizefixupfactor" compare="not_eq">
  64     <double>1.0</double>
  65   </test>
  66   <edit name="matrix" mode="assign">
  67     <times>
  68       <name>matrix</name>
  69       <matrix>
  70         <name>pixelsizefixupfactor</name> <double>0</double>
  71         <double>0</double> <name>pixelsizefixupfactor</name>
  72        </matrix>
  73     </times>
  74   </edit>
  75   <edit name="size" mode="assign">
  76     <divide>
  77       <name>size</name>
  78       <name>pixelsizefixupfactor</name>
  79     </divide>
  80   </edit>
  81 </match>
  82
  83 </fontconfig>