bin/xgif

#!/bin/sh
#
# z3bra - (c) wtfpl 2014
# record a gif from a specific window until ^D

usage () {
    cat <<EOF
usage: `basename $0` [-h] <file>
    -h : print this help

environment:
    BORDERS  : set the window border size (default: 5)
EOF
}

case $1 in
    -h) usage && exit 0;;
     *) test $# -lt 1 && usage && exit 1
esac

# the size of your window manager borders, to include them in the gif
BORDERS=${BORDER:-5}

# let the user grab a window
geom=$(xwininfo|grep -E "Wid|Hei|Abs"|sed 's/.*:\s*//g'|tr '\n' :|sed 's/:$//')

# extract window size/position
x=$(echo $geom|cut -d: -f1)
y=$(echo $geom|cut -d: -f2)
w=$(echo $geom|cut -d: -f3)
h=$(echo $geom|cut -d: -f4)

# add the borders to the width/heigh
w=$(( $w + 2 * $BORDERS))
h=$(( $h + 2 * $BORDERS))

# this hackery serves the purpose of recording until the user press ^D
fifo="/tmp/xgif-$$.fifo"
test -p $fifo || mkfifo $fifo

byzanz-record -x $x -y $y -w $w -h $h -e "cat $fifo" $1 &

# will hold the fifo openned until ^D is pressed
cat > $fifo
rm $fifo