#!/bin/sh
#
# snapshot_webpages
#
# A ImageMagick script to take screenshots and thumbnails of webpages.
# Input are three words per line,
#    URL  snapshot_image  thumbnail_image
#
# It works by running a web browser in a vitural X server and framing a
# snapshot image of that browser.
#
# Example usage:
# snapshot_webpages << END
# http://www.mozilla.org	mozilla.png	  mozilla_thmb.png
# http://www.imagemagick.org    imagemagick.png   imagemagick_thmb.png
# http://www.uk.research.att.com/archive/vnc/xvnc.html xvnc.png xvnc_thmb.png
# END
#
# Requires:
#  * ImageMagick
#  * Mozilla
#  * Xvnc (as Virtual X server)
#
# Henryk Gerlach (2005-01-01)
#
#BUGS:
# Mozilla:
#  * -geometry does not work with mozilla
#  * if mozilla is already running by the user it might not start up.
#  * if mozilla needs to be configured for the user running it,
#    the script won't work
#
# ---------------------------------
# I made a copy of this script when it was published on a IM mail list.
# It has been re-published, AS IS, as a example and resource for IM users.
# Unfortunatally it may require some tweeking to get it to work for your
# system with your browser.  I do not make any gurantee, or accept any
# responsibility for this script.  Use at your own risk.
#
# Anthony Thyssen   5 April 2007.
#
# ---------------------------------
BROWSER=mozilla

#The window title of the browser after startup, so we can grab it's window id.
#If all fails, take root to grab the whole desktop
BROWSERID="Mozilla"
#BROWSERID="root"

DISPLAY=":1"
#Use virtual X server
VIRTUAL_X="Xvnc -depth 16 -localhost -geometry 1024x768 $DISPLAY"

#cut of browser decoration for 800x600 resolution
CROP="800x490+0+90"
THUMBSIZE="120x90"

INITTIME=5 #time to wait for the Xserver and the browser to start up
LOADTIME=4 #time to wait for a page to load, take shot after this time

######################################################

#init
if test "$VIRTUAL_X" != ""; then
  $VIRTUAL_X &
fi
export DISPLAY
sleep $INITTIME
$BROWSER &
sleep $INITTIME
if test "$BROWSERID" != "root"; then
  BROWSERID=`xwininfo -name "$BROWSERID" | grep "Window id" | cut -d " " -f 4`
fi

# loop
while read URL BIG THUMB; do
  $BROWSER -remote "openurl($URL)"
  sleep  $LOADTIME
  import -window "$BROWSERID" $BIG
  if test "$CROP" != ""; then
    mogrify -crop $CROP "$BIG"
  fi
  convert -size "$THUMBSIZE" "$BIG" -resize "$THUMBSIZE" "$THUMB"
done

#cleanup
#this is ugly
if test "$VIRTUAL_X" != ""; then
  killall Xvnc
else
  killall $BROWSER
fi