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40 lines
1.4 KiB
Bash
Executable File
40 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2019 Matej Čamaj <camaj at protonmail dot com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# See https://upower.freedesktop.org/docs/KbdBacklight.html
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function get_brightness {
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dbus-send --system --type=method_call --print-reply\
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--dest="org.freedesktop.UPower" \
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"/org/freedesktop/UPower/KbdBacklight" \
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"org.freedesktop.UPower.KbdBacklight.$1" \
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| awk 'FNR==2{print $2}'
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}
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brightness=$(get_brightness "GetBrightness")
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max_brightness=$(get_brightness "GetMaxBrightness")
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if [ "$brightness" -eq "$max_brightness" ]; then
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new_brightness=0
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else
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new_brightness=$((brightness + 1))
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fi
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dbus-send --system --type=method_call \
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--dest="org.freedesktop.UPower" \
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"/org/freedesktop/UPower/KbdBacklight" \
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"org.freedesktop.UPower.KbdBacklight.SetBrightness" int32:$new_brightness
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