100 lines
2.6 KiB
Bash
100 lines
2.6 KiB
Bash
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#!/bin/bash
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# Script to set the monitor brightness
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# Creates a notification icon UI
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ERR(){ echo "ERROR: $1" 1>&2; }
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declare -i DEPCOUNT=0
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for DEP in /usr/bin/{xdotool,yad,xrandr};do
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[ -x "$DEP" ] || {
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ERR "$LINENO Dependency '$DEP' not met."
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DEPCOUNT+=1
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}
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done
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[ $DEPCOUNT -eq 0 ] || exit 1
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VERSION=`yad --version | awk '{ print $1 }'`
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verlte() {
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[ "$1" = "`echo -e "$1\n$2" | sort -V | head -n1`" ]
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}
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verlt() {
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[ "$1" = "$2" ] && return 1 || verlte $1 $2
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}
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if verlt $VERSION 0.38.2; then
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yad --text=" The version of yad installed is too old for to run this program, \n Please upgrade yad to a version higher than 0.38.2 " \
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--button="gtk-close"
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exit
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fi
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# Set the icon here
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ICON="sunny"
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# fifo
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export YAD_NOTIF=$(mktemp -u --tmpdir YAD_NOTIF.XXXXXX)
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mkfifo "$YAD_NOTIF"
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# trap that removes fifo
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trap "rm -f $YAD_NOTIF" EXIT
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# window class for the list dialog
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export CLASS="brightness_001"
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yad_scale() {
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# Ensures only one instance of this window
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# if there is another yad window close any dialog with the mathing class
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if [[ $(pgrep -c $(basename $0)) -ne 1 ]]; then
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pids="$(xdotool search --class "$CLASS")"
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wpid="$(xdotool getwindowfocus)"
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for pid in $pids; do
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# Compares window class pid with the pid of a window in focus
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if [[ "$pid" == "$wpid" ]]; then
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xdotool windowunmap $pid
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exit 1
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fi
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done
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fi
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# detect monitor
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MON=$(xrandr -q | grep " connected" | cut -f1 -d ' ')
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# find current xrandr brightness value
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XR=$(xrandr --verbose | grep -i brightness | cut -f2 -d ' ' | head -n1)
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BrCur=`awk "BEGIN {print $XR*100}"` # calculate, so e.g. 0.5 gets 50
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BrMax="100"
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BrMin="5"
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yad --scale --mouse --class="$CLASS" --skip-taskbar --min-value $BrMin --max-value $BrMax \
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--value $BrCur --print-partial --undecorated --width 300 \
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--on-top --escape-ok --no-buttons --hide-value --close-on-unfocus \
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| while read BrNew; do
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# division using awk, so xrandr value gets e.g. 0.5 rather than 50
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xrandr --output $MON --brightness $(awk "BEGIN {print $BrNew/100}")
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done
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}
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export -f yad_scale
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# fuction to set the notification icon
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function set_notification_icon() {
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echo "icon:$ICON"
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echo "tooltip:brighness control"
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echo "menu:About!bash -c 'yad --about'!gtk-about||Quit!quit!gtk-quit"
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}
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exec 3<> $YAD_NOTIF
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yad --notification --command="bash -c yad_scale" --listen <&3 & notifpid=$!
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# waits until the notification icon is ready
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until xdotool getwindowname $(xdotool search --pid "$notifpid" | tail -1) &>/dev/null; do
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# sleep until the window opens
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sleep 0.5
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done
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set_notification_icon >&3
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