50 lines
1.1 KiB
Bash
Executable File
50 lines
1.1 KiB
Bash
Executable File
#!/bin/bash -e
|
|
|
|
function round() {
|
|
local nb="$1"
|
|
local closest="${2#-}"
|
|
local mod; mod="$((nb % closest))"
|
|
|
|
if [ "$mod" -lt "$((closest / 2))" ]; then
|
|
echo "$((nb - mod))"
|
|
return
|
|
fi
|
|
echo "$((nb + closest - mod))"
|
|
}
|
|
|
|
function get_current() {
|
|
local d="$1"
|
|
local cur; cur="$(cat "$1/brightness")"
|
|
local max; max="$(cat "$1/max_brightness")"
|
|
|
|
echo "$((cur * 100 / max))"
|
|
}
|
|
|
|
function set_light() {
|
|
local d="$1"
|
|
local max; max="$(cat "$d/max_brightness")"
|
|
|
|
echo "$((CUR * max / 100))" > "$d/brightness"
|
|
}
|
|
|
|
NOTIFY='notify-send -t 1000 -a changeBrightness -u low'
|
|
NOTIFYVOL="$NOTIFY -i audio-volume-high"
|
|
|
|
DIRS=(/sys/class/backlight/*)
|
|
CUR="$(get_current "${DIRS[0]}")"
|
|
|
|
case "${1:0:1}" in
|
|
'') echo "$CUR"; exit ;;
|
|
'+'|'-') CUR="$(round $((CUR + "$1")) "$1")" ;;
|
|
*) CUR="$1" ;;
|
|
esac
|
|
|
|
[ "$CUR" -lt 0 ] && CUR=0
|
|
[ "$CUR" -gt 100 ] && CUR=100
|
|
|
|
for d in "${DIRS[@]}"; do
|
|
set_light "$d"
|
|
done
|
|
|
|
$NOTIFYVOL -h string:synchronous:vol -h int:value:"$CUR" "$CUR%"
|