File: grab_cgoban.in

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cgoban 1.9.14-18
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#!/bin/sh
#
# grab_cgoban    save.gif
#
# Look for a cgoban window, grab the displayed GO board and save it
# as a gif file.
#
# Anthony Thyssen   <anthony@cit.gu.edu.au>    24 October 1995
#
# The location of board in CGoban Window
# X=15 Y=78 S=393        # perfect fit -- wood only
# X=14 Y=77 S=395        # one pixel more (testing)
  X=8  Y=70 S=410        # green background frame

TMP=/tmp/grab_cgoban.$$
trap "rm -f $TMP; exit 0" 0

if [ $# -ne 1 ]; then
  echo >&2 "Usage: grab_cgoban save.gif"
  exit;
fi

# get the windows ID - ignore the Control or tools window if present
window=`xwininfo -tree -root |
          sed -n '/"CGoban"/!d; /"CGoban /d; s/^ *\(0x[^ ]*\).*/\1/p'`

# How many boards did we find
num=`echo $window | wc -w`
if [ $num -lt 1 ]; then
  echo >&2 "No CGoban Board found! - aborting"
  exit 10
fi
if [ $num -gt 1 ]; then
  echo >&2 "Multiple CGoban Boards found! - aborting"
  exit 10
fi

# Figure out image filters to use!
case "`type convert`" in
*'not found'*)
  case "`type ppmtogif`" in
  *'not found'*)
    case "`type pnmtogif`" in
    *'not found'*)
       FILTER=XWD ;;
    *) FILTER=PBMPLUS_OLD ;;
    esac ;;
  *) FILTER=PBMPLUS ;;
  esac ;;
*) FILTER=IMAGEMAGICK ;;
esac

# for debugging
#echo "filtering image with $FILTER"

# grab the image and filter appropriately
case "$FILTER" in
IMAGEMAGICK)
  # note ImageMagick can output to given files suffix
  # in fact it relies on a suffix to the file type
  xwd -id $window |
    convert  -crop ${S}x${S}+${X}+${Y} - $1
  ;;
PBMPLUS)
  xwd -id $window |
    xwdtopnm 2>/dev/null |
      pnmcut $X $Y $S $S |
	ppmtogif 2>/dev/null > $1
  ;;
PBMPLUS_OLD)
  xwd -id $window |
    xwdtopnm 2>/dev/null |
      pnmcut $X $Y $S $S |
	pnmtogif 2>/dev/null > $1
  ;;
XWD)
  echo >&2 "WARNING: unable to find a image filter package"
  echo >&2 "Dumping a XWD image to \"$1.xwd\" instead of GIF format"
  xwd -id $window > $1.xwd
  ;;
esac

# for Debugging
#xv $1 &