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#!/bin/sh
# Parse connected displays
default="--mode 1920x1080 --rotate normal --scale 1.0x1.0"
default_dpi=96
displays=$(xrandr -q | grep -w "connected")
x=$(echo "$displays" | grep "mm" | sed -E "s/.* ([0-9]+)mm x ([0-9]+)mm.*/\1/")
y=$(echo "$displays" | grep "mm" | sed -E "s/.* ([0-9]+)mm x ([0-9]+)mm.*/\2/")
calx=$(((1920 + (x / 10) - 1) / (x / 10))) # Ceiling for x
caly=$(((1080 + (y / 10) - 1) / (y / 10))) # Ceiling for y
dpi=$(if [ "$calx" -gt "$caly" ]; then echo "$calx"; else echo "$caly"; fi)
dpi=$(if [ "$dpi" -lt "$default_dpi" ]; then echo "$default_dpi"; else echo "$dpi"; fi)
for connected in $(echo "$displays" | cut -d ' ' -f 1); do
case $connected in
eDP*) edp="$connected" ;;
HDMI*) hdmi="$connected" ;;
DP*) dp="$connected" ;;
*) display="$connected" ;;
esac
done
# If the lid is closed, turn off the laptop's screen
if grep -q "disabled" /sys/class/drm/card0-eDP-1/enabled || grep -q "closed" /proc/acpi/button/lid/LID/state; then
if [ -n "$hdmi" ] && [ -z "$dp" ] && [ -n "$edp" ]; then
xrandr --output "$edp" --off --output "$hdmi" --primary $default --dpi "$dpi"
elif [ -z "$hdmi" ] && [ -n "$dp" ] && [ -n "$edp" ]; then
xrandr --output "$edp" --off --output "$dp" --primary $default --dpi "$dpi"
else
xrandr --output "$edp" --off --output "$display" --primary $default --dpi "$dpi"
fi
else
# Apply display settings when lid is open
if [ -n "$hdmi" ] && [ -z "$dp" ] && [ -n "$edp" ]; then
xrandr --output "$edp" --pos 1920x0 $default --dpi "$dpi" --output "$hdmi" --primary --pos 0x0 $default --dpi "$dpi"
elif [ -z "$hdmi" ] && [ -n "$dp" ] && [ -n "$edp" ]; then
xrandr --output "$edp" --pos 1920x0 $default --dpi "$dpi" --output "$dp" --primary --pos 0x0 $default --dpi "$dpi"
elif [ -z "$hdmi" ] && [ -z "$dp" ] && [ -n "$edp" ]; then
xrandr --output "$edp" --primary $default --dpi "$dpi"
else
xrandr --output "$display" --primary --auto
fi
fi
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