takeshot w/ margin

#!/bin/bash
#
# Profile:     http://www.ugra.ch/iso-color-profiles.phtml
#
# Author:      Twily                               2014
# Description: Capture a window with a margin around it
# Requires:    imagemagic, xwininfo, ISOcoated_v2_300_eci.icc
# Useage:      $ sh ./takeshot filename.png
#

M=24    # Margin
D=24    # Decoration

if [ -z $1 ]; then set -- "window.png"; fi

echo -e "\ntakeshot: Please select the window you would like to\n" \
            "         capture by clicking the mouse in that window.\n"

unset X Y W H
eval $(xwininfo |
    sed -n -e "s/^ \+Absolute upper-left X: \+\([0-9]\+\).*/X=\1/p" \
           -e "s/^ \+Absolute upper-left Y: \+\([0-9]\+\).*/Y=\1/p" \
           -e "s/^ \+Width: \+\([0-9]\+\).*/W=\1/p" \
           -e "s/^ \+Height: \+\([0-9]\+\).*/H=\1/p" )

W=`expr $W + $M \* 2`
H=`expr $H + $M \* 2 + $D`
X=`expr $X - $M`
Y=`expr $Y - $M - $D`

import -window root -crop $W'x'$H+$X+$Y "takeshot.tmp.png" || exit 1
convert "takeshot.tmp.png" -profile ~/.icc/ISOcoated_v2_300_eci.icc "$1" &>/dev/null || exit 1

echo -e "Window captured and saved to \"\e[1;32m~/$1\e[0m\"."
exit 0