utils/quantize_pixmaps

   1 #!/bin/sh
   2 cd $HOME/tmp-icons
   3
   4 # We process all of the xpm files in ~/icons, reducing their collective
   5 # colourmap, and producing files in ~/tmp-icons.
   6
   7 # Make a note of those files with transparent bits for zapping afterwards:
   8 # this isn't perfect, but seems to work OK for the pixmaps that I use.
   9
  10 # Notice that the input, output, and number of colours are hardwired.
  11
  12 # (The ppmtogif | giftoppm is to make sure the ppm file is in raw format, because
  13 # ppmquant appears not to work with the result of xpmtoppm!)
  14
  15 echo Converting files to ppm format
  16 NONE=""
  17 for i in ../icons/*.xpm
  18 do
  19     echo -n $i " "
  20     sed 's/[Nn]one/black/g' $i | xpmtoppm | ppmtogif | giftoppm > `basename $i .xpm`.ppm
  21     if test -s `basename $i .xpm`.ppm
  22     then
  23         if grep -iq None $i
  24         then
  25             NONE="$NONE `basename $i`"
  26         fi
  27     else
  28         rm -f `basename $i .xpm`.ppm
  29     fi
  30 done
  31
  32 echo Performing quantization to 32 colours
  33 ppmquantall 32 *.ppm
  34
  35 echo Converting to xpm format again
  36 for i in *.ppm
  37 do
  38     echo -n $i " "
  39     ppmtoxpm $i > `basename $i .ppm`.xpm
  40     rm -f $i
  41 done
  42
  43 echo Trying to fix transparent pixels in some files
  44 for i in $NONE
  45 do
  46     echo $i
  47     sed 's/` c #000000/` c None/' $i > $i-tmp.xpm
  48     mv $i-tmp.xpm $i
  49 done
  50