62 lines
1.5 KiB
Bash
62 lines
1.5 KiB
Bash
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#!/bin/sh
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# Set brightness via xbrightness when redshift status changes
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# Set brightness values for each status.
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# Range from 0 to 100 is valid
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brightness_day="100"
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brightness_transition="60"
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brightness_night="20"
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max=$(cat /sys/class/backlight/intel_backlight/max_brightness)
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actual=$(cat /sys/class/backlight/intel_backlight/actual_brightness)
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case $1 in
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period-changed)
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case $3 in
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night)
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for (( c=$actual; c > $((( $brightness_night * $max / 100))); c-=1 ))
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do
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echo $c > /sys/class/backlight/intel_backlight/brightness
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sleep .2
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done
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;;
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transition)
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old="$2"
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if [[ "$old" == "none" ]]
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then
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if [[ $actual -lt $(( $brightness_transition * $max / 100 )) ]]
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then
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old="night"
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else
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old="daytime"
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fi
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fi
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case $old in
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night)
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for (( c=$actual; c < $((( $brightness_transition * $max / 100))); c+=1 ))
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do
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echo $c > /sys/class/backlight/intel_backlight/brightness
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sleep .2
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done
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;;
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daytime)
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for (( c=$actual; c > $((( $brightness_transition * $max / 100))); c-=1 ))
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do
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echo $c > /sys/class/backlight/intel_backlight/brightness
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sleep .2
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done
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;;
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esac
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;;
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daytime)
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for (( c=$actual; c < $((( $brightness_day * $max / 100))); c+=1 ))
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do
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echo $c > /sys/class/backlight/intel_backlight/brightness
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sleep .2
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done
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echo $max > /sys/class/backlight/intel_backlight/brightness
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;;
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esac
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;;
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esac
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