From c55ed5e395b9e236cf8e8253801743a5b00a0042 Mon Sep 17 00:00:00 2001
From: Hsieh Chin Fan <typebrook@gmail.com>
Date: Sun, 6 Dec 2020 12:04:08 +0800
Subject: update

---
 tools/misc/brightness.sh | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'tools/misc/brightness.sh')

diff --git a/tools/misc/brightness.sh b/tools/misc/brightness.sh
index 8533a93..4f548f5 100755
--- a/tools/misc/brightness.sh
+++ b/tools/misc/brightness.sh
@@ -1,6 +1,10 @@
 #! /usr/bin/env bash
 
-BRIGHTNESS=$(xrandr --verbose | grep Brightness: | cut -d' ' -f2)
+BACKLIGHT_DIR=/sys/class/backlight/intel_backlight
 
-VALUE=$( echo $BRIGHTNESS $1 | bc )
-xrandr --output eDP-1 --brightness $VALUE
+CURRENT=$(cat $BACKLIGHT_DIR/brightness)
+MAX=$(cat $BACKLIGHT_DIR/max_brightness)
+
+echo " $CURRENT + ( $MAX * ${1/+} )" | \
+bc | \
+cut -d'.' -f1 >$BACKLIGHT_DIR/brightness
-- 
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