data/flags/convert_png

   1 #!/bin/bash
   2
   3 files="$@"
   4
   5 if test "x$1" = "x-h" || test "x$1" = "x--help" ; then
   6     echo "Usage: $(basename $0) [list of svg-files]"
   7     exit 0
   8 fi
   9
  10 # Renderer: inkscape or sodipodi.  Inkscape seems slightly better.
  11 #SODIPODI="sodipodi"
  12 RENDERER="inkscape"
  13
  14 # Target width: 29px is regular, 44px is large (height is then calculated
  15 # automatically).
  16 TARGET_WIDTH=29
  17 TARGET_WIDTH_LARGE=44
  18
  19 SHIELD_WIDTH=14
  20 SHIELD_HEIGHT=14
  21 SHIELD_WIDTH_LARGE=19
  22 SHIELD_HEIGHT_LARGE=19
  23
  24 which $RENDERER >/dev/null \
  25   || (echo "You need $RENDERER to render the SVG files.")
  26 (which convert >/dev/null && which composite >/dev/null) \
  27   || (echo "You need ImageMagick to manipulate the images."; err=yes)
  28
  29 for file0 in $files; do
  30   # Generate the regular images
  31   filebase=`echo $file0 | sed 's/.[Ss][Vv][Gg]$//'`
  32
  33   file1="$filebase-1.png"
  34   file2="$filebase-2.png"
  35   file3="$filebase-3.png"
  36   file4="$filebase.png"
  37   echo "Converting $file0 to $file4"
  38
  39   # This is actually necessary for rendering
  40   rm -f $file1 $file2 $file3 $file4
  41
  42   $RENDERER -f "$file0" -w $(($TARGET_WIDTH - 2)) -e "$file1" >/dev/null
  43
  44   # Ugly way to determine width and height.  There must be a better way!
  45   SIZE=`identify "$file1" | sed "s/^.*PNG //" | sed "s/ .*\$//"`
  46   WIDTH=`echo $SIZE | sed "s/x.*\$//"`
  47   HEIGHT=`echo $SIZE | sed "s/^.*x//"`
  48
  49   # This complicated code puts a 1-pixel black border around the image.
  50   convert -resize $((2*$WIDTH))x$((2*$HEIGHT)) -fill black -draw "rectangle 0,0 $((2*$WIDTH)),$((2*$HEIGHT))" $file1 $file2
  51   convert -crop $((2+$WIDTH))x$((2+$HEIGHT))+0x0 $file2 $file3
  52   composite -gravity center -compose src-over $file1 $file3 $file4
  53
  54   rm -f $file1 $file2 $file3 "$filebase-4-fs8.png"
  55
  56   file1="$filebase-1.png"
  57   file2="$filebase-2.png"
  58   file3="$filebase-3.png"
  59   file4="$filebase-shield.png"
  60
  61   WIDTH=$(($SHIELD_WIDTH-2))
  62   HEIGHT=$(($SHIELD_HEIGHT-2))
  63
  64   # The following assumes that the drawing has the same dimensions as the page
  65   DRAWING_WIDTH=$($RENDERER -f $file0 -W)
  66   DRAWING_HEIGHT=$($RENDERER -f $file0 -H)
  67   X0=$(awk -v drawing_width=${DRAWING_WIDTH} 'BEGIN { print int((drawing_width / 6) + 0.5) }')
  68   X1=$(awk -v x0=${X0} 'BEGIN{ print int((x0 * 5) + 0.5) }')
  69   Y0=0
  70   Y1=$(awk -v drawing_height=${DRAWING_HEIGHT} 'BEGIN { print int(drawing_height + 0.5) }')
  71   AREA=$X0":"$Y0":"$X1":"$Y1
  72
  73   $RENDERER -f $file0 -w $WIDTH -h $HEIGHT -e $file1 -a=$AREA > /dev/null
  74
  75   composite -gravity center -compose src-over $file1 mask.png $file2
  76   composite -gravity center -compose src-over mask.png $file2 $file3
  77   convert -transparent magenta $file3 $file4
  78
  79   rm -f $file1 $file2 $file3 "$filebase-4-fs8.png"
  80
  81   # Generate the large images
  82   filebase=`echo $file0 | sed 's/.[Ss][Vv][Gg]$//'`
  83
  84   file1="$filebase-1.png"
  85   file2="$filebase-2.png"
  86   file3="$filebase-3.png"
  87   file4="$filebase-large.png"
  88   echo "Converting $file0 to $file4"
  89
  90   # This is actually necessary for rendering
  91   rm -f $file1 $file2 $file3 $file4
  92
  93   $RENDERER -f "$file0" -w $(($TARGET_WIDTH_LARGE - 2)) -e "$file1" >/dev/null
  94
  95   # Ugly way to determine width and height.  There must be a better way!
  96   SIZE=`identify "$file1" | sed "s/^.*PNG //" | sed "s/ .*\$//"`
  97   WIDTH=`echo $SIZE | sed "s/x.*\$//"`
  98   HEIGHT=`echo $SIZE | sed "s/^.*x//"`
  99
 100   # This complicated code puts a 1-pixel black border around the image.
 101   convert -resize $((2*$WIDTH))x$((2*$HEIGHT)) -fill black -draw "rectangle 0,0 $((2*$WIDTH)),$((2*$HEIGHT))" $file1 $file2
 102   convert -crop $((2+$WIDTH))x$((2+$HEIGHT))+0x0 $file2 $file3
 103   composite -gravity center -compose src-over $file1 $file3 $file4
 104
 105   rm -f $file1 $file2 $file3 "$filebase-4-fs8.png"
 106
 107   file1="$filebase-1.png"
 108   file2="$filebase-2.png"
 109   file3="$filebase-3.png"
 110   file4="$filebase-shield-large.png"
 111
 112   WIDTH=$(($SHIELD_WIDTH_LARGE-2))
 113   HEIGHT=$(($SHIELD_HEIGHT_LARGE-2))
 114
 115   # The following assumes that the drawing has the same dimensions as the page
 116   DRAWING_WIDTH=$($RENDERER -f $file0 -W)
 117   DRAWING_HEIGHT=$($RENDERER -f $file0 -H)
 118   X0=$(awk -v drawing_width=${DRAWING_WIDTH} 'BEGIN { print int((drawing_width / 6) + 0.5) }')
 119   X1=$(awk -v x0=${X0} 'BEGIN{ print int((x0 * 5) + 0.5) }')
 120   Y0=0
 121   Y1=$(awk -v drawing_height=${DRAWING_HEIGHT} 'BEGIN { print int(drawing_height + 0.5) }')
 122   AREA=$X0":"$Y0":"$X1":"$Y1
 123
 124   $RENDERER -f $file0 -w $WIDTH -h $HEIGHT -e $file1 -a=$AREA > /dev/null
 125
 126   composite -gravity center -compose src-over $file1 mask-large.png $file2
 127   composite -gravity center -compose src-over mask-large.png $file2 $file3
 128   convert -transparent magenta $file3 $file4
 129
 130   rm -f $file1 $file2 $file3 "$filebase-4-fs8.png"
 131 done