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