#!/bin/sh
dpmsrevert() {
    xset +dpms dpms force on
    xset +dpms dpms 0 0 720
}
trap dpmsrevert HUP INT TERM

scrot /tmp/screen_locked.png
sync
mogrify -scale 10% -scale 1000% /tmp/screen_locked.png
sync
xset +dpms dpms 0 0 10
i3lock -nfei /tmp/screen_locked.png
dpmsrevert