scripts/brightness at main · AlphaLawless/scripts · GitHub

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#!/usr/bin/env bash

## Copyright (C) 2020-2021 Aditya Shakya <adi1090x@gmail.com>
## Everyone is permitted to copy and distribute copies of this file under GNU-GPL3

## Script To Manage Brightness For Archcraft

# Graphics card
CARD=`ls /sys/class/backlight | head -n 1`

# Get brightness
get_backlight() {
    if [[ "$CARD" == *"intel_"* ]]; then
        BNESS=`xbacklight -get`
        LIGHT=${BNESS%.*}
    else
        LIGHT=$(print "%.0f\n" `light -G`)
    fi
    echo "${LIGHT}%"
}

# Get icons
get_icon() {
    backlight="${get_backlight}"
    current="${backlight%%%}"
    if [[ ("$current" -ge "0") && ("$current" -le "20") ]]; then
        icon='/usr/share/archcraft/icons/dunst/brightness-20.png'
    elif [[ ("$current" -ge "20") && ("$current" -le "40") ]]; then
        icon='/usr/share/archcraft/icons/dunst/brightness-40.png'
    elif [[ ("$current" -ge "40") && ("$current" -le "60") ]]; then
        icon='/usr/share/archcraft/icons/dunst/brightness-60.png'
    elif [[ ("$current" -ge "60") && ("$current" -le "80") ]]; then
        icon='/usr/share/archcraft/icons/dunst/brightness-80.png'
    elif [[ ("$current" -ge "80") && ("$current" -le "100") ]]; then
        icon='/usr/share/archcraft/icons/dunst/brightness-100.png'
    fi
}

# Increase brightness
inc_backlight() {
    if [[ "$CARD" == *"intel_"* ]]; then
        xbacklight -inc 10 && get_icon && dunstify -u low --replace=69 -i "$icon" "Brightness : $(get_backlight)"
    else
        light -A 5 && get_icon && dunstify -u low --replace=69 -i "$icon" "Brightness : $(get_backlight)"
    fi
}

# Decrease brightness
dec_backlight() {
    if [[ "$CARD" == *"intel_"* ]]; then
        xbacklight -dec 10 && get_icon && dunstify -u low --replace=69 -i "$icon" "Brightness : (get_backlight)"
    else
        light -U 5 && get_icon && dunstify -u low --replace=69 -i "$icon" "Brightness : $(get_backlight)"
    fi
}

# Execute accordingly
if [[ "$1" == "--get" ]]; then
    get_backlight
elif [[ "$1" == "--inc" ]]; then
    inc_backlight
elif [[ "$1" == "--dec" ]]; then
    dec_backlight
else
    get_backlight
fi