mdw@git.distorted.org.uk Git - profile/blob - bin/xzoomscr

   1 #! /bin/sh -e
   2
   3 case $# in 1) ;; *) echo >&2 "usage: $1 ZOOM"; exit 2 ;; esac
   4 zoom=$1
   5
   6 ok=nil
   7 case ${DISPLAY-nil} in
   8   *:*[!0-9.]*) ;;
   9   *:*.*.*) ;;
  10   *:*.*) ok=t dpybase=${DISPLAY%.*} ;;
  11   *:*) ok=t dpybase=$DISPLAY ;;
  12 esac
  13 case ok in nil) echo >&2 "$0: bad DISPLAY"; exit 2 ;; esac
  14
  15 set -- $(xqueryptr); scr=$1 x=$2 y=$3
  16 DISPLAY=$dpybase.$scr; export DISPLAY
  17
  18 eval $(xscsize -b)
  19
  20 case $(( $XWIDTH % $zoom || $XHEIGHT % $zoom )) in
  21   0) ;;
  22   *) echo >&2 "$0: zoom multiplier doesn't divide screen size"; exit 2 ;;
  23 esac
  24
  25 { read _
  26   found=nil
  27   while read _ _ respos name; do
  28     res=${respos%%+*} pos=${respos#*+}
  29     ww=${res%x*} hh=${res#*x}
  30     w=${ww%/*} h=${hh%/*}
  31     x0=${pos%+*} y0=${pos#*+}
  32     x1=$(( $x0 + $w )) y1=$(( $y0 + $h ))
  33     case $(( $x0 <= $x && $x < $x1 && $y0 <= $y && $y < $y1 )) in
  34       1) found=t; break ;;
  35     esac
  36   done
  37 } <<EOF
  38 $(xrandr --listmonitors)
  39 EOF
  40
  41 case $found in nil) echo >&2 "$0: pointer not on any screen?"; exit 2 ;; esac
  42
  43 case $zoom in
  44   1) pan= ;;
  45   *) pan="--panning ${XWIDTH}x${XHEIGHT}" ;;
  46 esac
  47
  48 xrandr --fb ${XWIDTH}x${XHEIGHT} \
  49         --output $name \
  50         --mode $(( $XWIDTH/$zoom ))x$(( $XHEIGHT/$zoom )) \
  51         $pan