scripts/generate-sprites

   1 #!/bin/sh
   2 # vim: expandtab sw=4 ts=4 sts=4:
   3
   4 # Check for proper number of command line args.
   5 if [ $# -ne 1 ]; then
   6   echo "Usage: `basename $0` {path_to_pma_root_folder}"
   7   exit 65
   8 fi
   9
  10 # Check if we have ImageMagick
  11 hash identify 2>&- ||  {
  12   echo "ERROR: ImageMagick not found on the system!"
  13   echo "Quitting..."
  14   exit 1
  15 }
  16
  17 # Compress image, if possible
  18 HAVE_PNGCRUSH=1
  19 hash pngcrush 2>&- || {
  20   HAVE_PNGCRUSH=0
  21   echo "WARNING: 'pngcrush' not found, will not be able to compress the sprites"
  22 }
  23
  24 # Icons that should not be included in the sprite
  25 BLACKLIST="vertical_line.png spacer.png"
  26
  27 # Output filename for the sprite image
  28 OUTPUT="sprites.png"
  29
  30 # Library file that will contain the information about
  31 # individual images that are part of the sprite
  32 LIBRARY="../sprites.lib.php"
  33
  34 if [ -d $1/themes ]; then
  35   cd $1/themes
  36
  37   # For each theme
  38   for d in $(ls -d */); do
  39     # Go to folder that contains the images
  40     cd "$d"img
  41     echo "Processing folder: $PWD"
  42     FILES=''
  43     for f in $(ls *.png); do
  44       VALID=true
  45       # Do not include blacklisted icons
  46       for b in $BLACKLIST; do
  47         if [ "$b" = "$f" ]; then
  48           VALID=false
  49         fi
  50       done
  51       if [ $VALID = false ]; then
  52         continue
  53       fi
  54       DATA=$(identify -ping $f || echo "NULL")
  55       if [ "$DATA" != "NULL" ]; then
  56         SIZE=$(echo $DATA | cut -d ' '  -f 3 | sed 's/x/ /')
  57         # Do not include icons that are larger than 16x16
  58         for s in $SIZE; do
  59           if [ $s -gt 16 ]; then
  60             VALID=false
  61           fi
  62         done
  63         if [ $VALID = true ]; then
  64           # Build the list of valid icons
  65           FILES="$FILES $f"
  66         fi
  67       fi
  68     done
  69
  70     # Create an empty sprite of the correct size
  71     NUM_FILES=''
  72     for f in $FILES; do
  73       NUM_FILES=$(($NUM_FILES+1))
  74     done
  75     convert -size 16x$(($NUM_FILES*16+16)) xc:none temp.png
  76
  77     # Add each icon to the sprite
  78     CURRENT=1
  79     for f in $FILES; do
  80       convert temp.png $f -geometry +0+$(($CURRENT*16)) -composite temp.png
  81       CURRENT=$(($CURRENT+1))
  82     done
  83
  84     # Compress image, if possible
  85     if [ $HAVE_PNGCRUSH -eq 1 ]; then
  86       echo "Compressing file: $PWD/$OUTPUT"
  87       pngcrush -brute temp.png $OUTPUT > /dev/null
  88       rm -f temp.png
  89     else
  90       mv temp.png $OUTPUT
  91     fi
  92
  93     # Generate the library file that contains the information
  94     # about individual images that are part of the sprite
  95     echo "<?php" > $LIBRARY
  96     echo "/* AUTOGENERATED CONTENT - DO NOT EDIT */" >> $LIBRARY
  97     echo "/* ALL CHANGES WILL BE UNDONE */" >> $LIBRARY
  98     echo "/* RUN './scripts/generate-sprites' TO UPDATE THIS FILE */" >> $LIBRARY
  99     echo "function PMA_sprites() {" >> $LIBRARY
 100     echo "    return array(" >> $LIBRARY
 101     CURRENT=1
 102     for f in $FILES; do
 103       # Add a CSS rule for each icon in the sprite
 104       NAME=$(echo "'$f'" | sed 's/\.png//')
 105
 106       DATA=$(identify -ping $f || echo "NULL")
 107       if [ "$DATA" != "NULL" ]; then
 108         SIZE=$(echo $DATA | cut -d ' '  -f 3 | sed 's/x/ /')
 109         WIDTH=0
 110         HEIGHT=0
 111         for s in $SIZE; do
 112           if [ $WIDTH = 0 ]; then
 113             WIDTH=$s
 114           else
 115             HEIGHT=$s
 116           fi
 117         done
 118       fi
 119       echo "        $NAME => array("               >> $LIBRARY
 120       echo "            'position' => '$CURRENT'," >> $LIBRARY
 121       echo "            'width'    => '$WIDTH',"   >> $LIBRARY
 122       echo "            'height'   => '$HEIGHT'"   >> $LIBRARY
 123       echo "        ),"                            >> $LIBRARY
 124       CURRENT=$(($CURRENT+1))
 125     done
 126     echo "    );" >> $LIBRARY
 127     echo "}" >> $LIBRARY
 128     echo "?>" >> $LIBRARY
 129
 130     # Back to the parent folder
 131     cd ../..
 132   done
 133   exit 0
 134 else
 135   echo "ERROR: could not find the 'themes' folder in '`readlink -f $1`'"
 136   exit 1
 137 fi