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dotfiles/.local/bin/displayselect
David JULIEN 9d06a61780 legal: change license to GPLv3 in script headers
Kept wondering wether I should keep the MIT (because I highly value
freedom of act) or embrace the GPL (because I don't want this work to
become close-source).

I do understand that this commit (and the next one that is actually
changing the LICENSE) is a defeat for freedom. I guess freedom has been
defeated long time ago, when people and companies figured that was
"free" (as in gratis) was also "free" (as in disposable).

This is not how I think free (as in "libre") works but hey, that surely
is how Intel and other corporations see it (ec: Intel Management Engine
is entirely based on Minix, is close-source, and *maybe* used as a
backdoor by anybody).

It boils down to the Paradox of Tolerance, and I surely won't tolerate
shit going their way. If you want to take open source stuff, be my
guest ; but you have to play by the rules.
2021-02-16 01:09:56 +01:00

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#!/usr/bin/env sh
######################################################################
# @author : swytch (adapted from Luke Smith - lukesmith.xyz)
# @file : displayselect
# @license : GPLv3
# @created : Wednesday May 20, 2020 18:04:01 CEST
#
# @description : detect displays and select an organisation
######################################################################
twoscreen() { # If multi-monitor is selected and there are two screens.
mirror=$(printf "no\\nyes" | dmenu -i -p "Mirror displays?")
# Mirror displays using native resolution of external display and a scaled
# version for the internal display
if [ "$mirror" = "yes" ]; then
external=$(echo "$screens" | dmenu -i -p "Optimize resolution for:")
internal=$(echo "$screens" | grep -v "$external")
res_external=$(xrandr --query | sed -n "/^$external/,/\+/p" | \
tail -n 1 | awk '{print $1}')
res_internal=$(xrandr --query | sed -n "/^$internal/,/\+/p" | \
tail -n 1 | awk '{print $1}')
res_ext_x=$(echo $res_external | sed 's/x.*//')
res_ext_y=$(echo $res_external | sed 's/.*x//')
res_int_x=$(echo $res_internal | sed 's/x.*//')
res_int_y=$(echo $res_internal | sed 's/.*x//')
scale_x=$(echo "$res_ext_x / $res_int_x" | bc -l)
scale_y=$(echo "$res_ext_y / $res_int_y" | bc -l)
xrandr --output "$external" --auto --scale 1.0x1.0 \
--output "$internal" --auto --same-as "$external" \
--scale "$scale_x"x"$scale_y"
else
default=$(printf "yes\\nno" | dmenu -i -p "Default settings?")
if [ $default = "no" ]; then
primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
secondary=$(echo "$screens" | grep -v "$primary")
direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
rotation=$(printf "normal\\nleft\\nright" | dmenu -i -p "Rotate $secondary?")
xrandr --output "$primary" --auto --scale 1.0x1.0 \
--output "$secondary" --"$direction"-of "$primary" --auto --scale 1.2x1.2 --rotate $rotation
else
xrandr --fb 4224x2376 \
--output "eDP1" --mode 1920x1080 --pos 2304x0\
--output "HDMI2" --scale 1.2x1.2 --pos 0x0
fi
fi
}
morescreen() { # If multi-monitor is selected and there are more than two screens.
primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
secondary=$(echo "$screens" | grep -v "$primary" | dmenu -i -p "Select secondary display:")
direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
tertiary=$(echo "$screens" | grep -v "$primary" | grep -v "$secondary" | dmenu -i -p "Select third display:")
xrandr --output "$primary" --auto --output "$secondary" --"$direction"-of "$primary" --auto --output "$tertiary" --"$(printf "left\\nright" | grep -v "$direction")"-of "$primary" --auto
}
multimon() { # Multi-monitor handler.
case "$(echo "$screens" | wc -l)" in
1) xrandr $(echo "$allposs" | grep -v "$screens" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
2) twoscreen ;;
*) morescreen ;;
esac ;}
# Get all possible displays
allposs=$(xrandr -q | grep "connected")
# Get all connected screens.
screens=$(echo "$allposs" | grep " connected" | awk '{print $1}')
# Get user choice including multi-monitor and manual selection:
chosen=$(printf "multi-monitor\\n%s\\nmanual selection" "$screens" | dmenu -i -p "Select display arangement:") &&
case "$chosen" in
"manual selection") arandr ; exit ;;
"multi-monitor") multimon ;;
*) xrandr --output "$chosen" --auto --scale 1.0x1.0 $(echo "$allposs" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
esac
setbg # Fix background if screen size/arangement has changed.
pgrep -x dunst >/dev/null && killall dunst && setsid dunst & # Restart dunst to ensure proper location on screen