#!/bin/bash

backlight_float=$(xbacklight -get)
current_backlight=${backlight_float%%.*}

case $1 in
"raise")
	(( current_backlight += 5 ))
	[[ $current_backlight -gt 100 ]] && current_backlight=100

	xbacklight -set $current_backlight -time 0
	notify-send -t 250 "BL: $current_backlight"
;;
"lower")
	(( current_backlight -= 5 ))
	[[ $current_backlight -lt 5 ]] && current_backlight=1

	xbacklight -set $current_backlight -time 0
	notify-send -t 250 "BL: $current_backlight"
;;
esac