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#!/bin/sh
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
main()
{
# Handle opts
while getopts ":h" opt
do
case "$opt" in
h) usage && exit 0 ;;
*)
printf "Invalid option passed: %s\n" "$OPTARG" >&2
;;
esac
done
shift $(( OPTIND - 1 ))
[ $# -lt 1 ] && usage && exit 1
case "$1" in
inc)
xbacklight -inc ${2:-5}
notify="Brightness increased to $(brightness_level)%"
;;
dec)
xbacklight -dec ${2:-5}
notify="Brightness lowered to $(brightness_level)%"
;;
esac
notify-send -n 57492 -s -t 2 -i "$(brightness_icon)" "Backlight" "$notify"
}
brightness_level()
{
xbacklight -get
}
brightness_icon()
{
[ $(brightness_level) -lt 10 ] && printf "notification-display-brightness-off" && return
[ $(brightness_level) -lt 35 ] && printf "notification-display-brightness-low" && return
[ $(brightness_level) -lt 70 ] && printf "notification-display-brightness-medium" && return
[ $(brightness_level) -lt 95 ] && printf "notification-display-brightness-high" && return
printf "notification-display-brightness-full"
}
usage()
{
cat <<EOF
Usage:
${0##*/} -h
Nondescript
Options:
-h Show this help text and exit.
EOF
}
main "$@"
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