121 lines
2.4 KiB
Bash
Executable File
121 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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BRIGHTNESS_INCREMENT=.1
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R_INCREMENT=0
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G_INCREMENT=.1
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B_INCREMENT=.2
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xrandr_settings_of_display () {
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if [ "$#" -ne 1 ] ; then
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echo "Usage : xrandr_settings_of_display <display_name>" >&2
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exit 1
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fi
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out="$(xrandr --verbose | sed -e "1,/^$1/d" | sed '/^ /,$d')"
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if [ -z "$out" ] ; then
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echo "ERROR, empty output for command: xrandr_settings_of_display $@" >&2
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exit 1
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fi
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echo "$out"
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}
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brigthness_of_display () {
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if [ "$#" -ne 1 ] ; then
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echo "Usage : brigthness_of_display <display_name>" >&2
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exit 1
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fi
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xrandr_settings_of_display "$1" | grep -Po 'Brightness: \K.*'
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}
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raw_gamma_of_display () {
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if [ "$#" -ne 1 ] ; then
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echo "Usage : raw_gamma_of_display <display_name>" >&2
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exit 1
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fi
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xrandr_settings_of_display "$1" | grep -Po 'Gamma: \K.*' | tr ':' ' '
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}
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gamma_of_display () {
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if [ "$#" -ne 1 ] ; then
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echo "Usage : gamma_of_display <display_name>" >&2
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exit 1
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fi
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read r g b <<< "$(raw_gamma_of_display "$1")"
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echo "$r $g $b -> $(invert $r) $(invert $g) $(invert $b)" >&2
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echo "$(invert $r) $(invert $g) $(invert $b)"
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}
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invert () {
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if [ "$#" -ne 1 ] ; then
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echo "Usage : invert <float_number>" >&2
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exit 1
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fi
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echo "1/$1" | bc -l | grep -o '.*\...'
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}
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############### Args
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if [ "$#" -ne 2 ] ; then
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echo "Usage : $0 <brightness|redness> +|-|=" >&2
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exit 1
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fi
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property="$1"
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action="$2"
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if [ ! "$action" = - ] && [ ! "$action" = + ] && [ ! "$action" = '=' ] ; then
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echo "Bad action '$action'. Expected + - or =."
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exit 1
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fi
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i=0
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xrandr --listactivemonitors | tail -n +2 | cut -d ' ' -f 6 | while read monitor ; do
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args=''
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if [ "$i" -eq 0 ] ; then
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brightness="$(brigthness_of_display "$monitor")"
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read r g b <<< "$(gamma_of_display "$monitor")"
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((i=i+1))
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case "$property" in
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brightness)
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if [ "$action" = '=' ] ; then
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brightness=1
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else
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brightness="$( echo "$brightness $action $BRIGHTNESS_INCREMENT" | bc -l )"
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fi
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;;
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redness)
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if [ "$action" = '=' ] ; then
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r=1
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g=1
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b=1
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else
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r="$( echo "$r $action $R_INCREMENT" | bc -l )"
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g="$( echo "$g $action $G_INCREMENT" | bc -l )"
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b="$( echo "$b $action $B_INCREMENT" | bc -l )"
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#echo "from $r:$g:$b to $rnew:$gnew:$bnew"
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fi
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;;
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*)
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echo "Invalid property $property"
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exit 1
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esac
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# Build command line args from variables
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args="--brightness $brightness --gamma $r:$g:$b"
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else
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args="--same-as $monitor"
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fi
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xrandr --output "$monitor" $args
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echo xrandr --output "$monitor" $args
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done
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