#!/bin/sh

vertical=$(($(xdotool getdisplaygeometry | awk '{print $2}') - newsize))
horizontal=$(($(xdotool getdisplaygeometry | awk '{print $1}') - newwidth))

convert $1 -resize ${horizontal}x${vertical}\> ~/.config/lockwall.png
convert ~/.config/lockwall.png ~/.config/lock.png -gravity center -composite ~/.config/lockwall.png