#!/bin/sh

DELAY=300

while true; do
	activ_win_id=$(xprop -root _NET_ACTIVE_WINDOW)
	if result=$(xprop -id ${activ_win_id:40:9} | grep _NET_WM_STATE_FULLSCREEN); then
		xdotool key Print
		xset -dpms
		xset dpms
	fi
	sleep "$DELAY"
done