56 lines
1.6 KiB
Text
56 lines
1.6 KiB
Text
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#!/usr/bin/env sh
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# Brightness control script using xbacklight
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# Will use notify-send to create brightness notifications, if dunst is used
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# or the notification daemon supports tag stacks, will automatically update
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# the same notifications and not create new ones.
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#
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# inspired from https://gist.github.com/Blaradox/030f06d165a82583ae817ee954438f2e
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usage() {
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echo "usage: control-brightness up|down [step], where step can be any int value
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or: control-brightness set target, where target can be an int value 0-100"
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}
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direction=$1
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step=${2:-10}
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get_brightness() {
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xbacklight -get | cut -d. -f1
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}
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send_notification() {
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icon="preferences-system-brightness-lock"
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brightness=$(get_brightness)
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# Make the bar with the special character ─ (it's not dash -)
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# https://en.wikipedia.org/wiki/Box-drawing_character
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bar=$(seq -s "─" 0 $((brightness / 5)) | sed 's/[0-9]//g' |
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sed -e 's/^─/┠/' -e 's/^\(.\{20\}\)/\1┫/')
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if type dunstify 1>/dev/null 2>/dev/null; then
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dunstify -i "$icon" -u normal " $bar" -a "xbacklight" -h string:x-dunst-stack-tag:brightness
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else
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notify-send -i "$icon" -u normal " $bar" -a "xbacklight" -h string:x-dunst-stack-tag:brightness
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fi
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}
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case $direction in
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up)
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xbacklight -inc "$step"
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send_notification
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;;
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down)
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xbacklight -dec "$step"
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send_notification
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;;
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set)
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if [ -z "$step" ]; then
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echo "set option requires target brightness to be specified."
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return 1
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fi
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xbacklight -set "$step"
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send_notification
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;;
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*)
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echo "usage: control-brightness up|down [step], where step can be any int value"
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;;
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esac
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