3 case $# in 1) ;; *) echo >&2 "usage: $1 ZOOM"; exit 2 ;; esac
10 */*) ok=t mul=${zoom%/*} div=${zoom#*/} ;;
11 *) ok=t mul=1 div=$zoom ;;
13 case $ok in nil) echo >&2 "$0: bad zoom $zoom"; exit 2 ;; esac
14 case $(( $mul > $div )) in 1) echo >&2 "$0: zoom too high"; exit 2 ;; esac
17 case ${DISPLAY-nil} in
20 *:*.*) ok=t dpybase=${DISPLAY%.*} ;;
21 *:*) ok=t dpybase=$DISPLAY ;;
23 case $ok in nil) echo >&2 "$0: bad DISPLAY"; exit 2 ;; esac
25 set -- $(xqueryptr); scr=$1 x=$2 y=$3
26 DISPLAY=$dpybase.$scr; export DISPLAY
30 case $(( $XWIDTH%$div || $XHEIGHT%$div )) in
32 *) echo >&2 "$0: zoom divisor doesn't divide screen size"; exit 2 ;;
37 while read _ _ respos name; do
38 res=${respos%%+*} pos=${respos#*+}
39 ww=${res%x*} hh=${res#*x}
41 x0=${pos%+*} y0=${pos#*+}
42 x1=$(( $x0 + $w )) y1=$(( $y0 + $h ))
43 case $(( $x0 <= $x && $x < $x1 && $y0 <= $y && $y < $y1 )) in
48 $(xrandr --listmonitors)
51 case $found in nil) echo >&2 "$0: pointer not on any screen?"; exit 2 ;; esac
53 case $(( $mul == $div )) in
54 1) pan="--panning 0x0" ;;
55 *) pan="--panning ${XWIDTH}x${XHEIGHT}" ;;
58 xrandr --fb ${XWIDTH}x${XHEIGHT} \
60 --mode $(( $mul*$XWIDTH/$div ))x$(( $mul*$XHEIGHT/$div )) \