deepin开启笔记本键盘背光灯- Community

deepin开启笔记本键盘背光灯

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deepin

2018-08-27 01:57

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本本是华硕zx50j游戏本，拥有键盘背光灯，Deepin下fn+f3/fn+f4无法调整背光灯．最近换了个透明键盘膜，于是看看能否弄一下键盘灯．一开始想找找有没有相关驱动，发现没有．继续翻资料，发现org.freedesktop.UPower.KbdBacklight这东西，上他官网找了找，貌似有戏．https://upower.freedesktop.org/docs/ref-dbus.html

看了下就三个api, GetMaxBrightness, GetBrightness, SetBrightness,具体说明见他网页，很明显就他了，既然是dbus api,那就很好办了，直接用dbus-send就可以搞事
dbus-send [--help] [--system | --session | --bus=ADDRESS | --peer=ADDRESS] [--dest=NAME] [--type=TYPE] [--print-reply[=literal]] [--reply-timeout=MSEC] [contents ...]

剩下的就是写脚本的事了

#!/bin/bash
if [[ $# -lt 1 ]]; then
echo -e "\033[0;31mUsage: $0 <+|->\033[0m"
exit -1
fi
MaxBrightness=`dbus-send --system --print-reply=literal --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.GetMaxBrightness" | sed 's/int32//g'`
NowBrightness=`dbus-send --system --print-reply=literal --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.GetBrightness" | sed 's/int32//g'`
if [[ $1 == '+' && $NowBrightness < $MaxBrightness ]]; then
dbus-send --system --print-reply=literal --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.SetBrightness" int32:$(expr $NowBrightness + 1)
elif [[ $1 == '-' && $NowBrightness > 0 ]]; then
dbus-send --system --print-reply=literal --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.SetBrightness" int32:$(expr $NowBrightness - 1)
fi

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传入参数为+或者-，表示增加或者降低亮度，然后添加到自定义快捷键，快捷键fn键用不了，故用super + f3/super + f4代替，完事

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