Poor man's multihead management

Readme.mkd

mont

Poor man's multihead management.

Usage

• mont r put external 1080p monitor to the right of laptop's built-in 4K monitor.
• mont s use built-in monitor only.
• mont a automatically choose among the above 2 setups.

mont

#!/bin/bash

DPI=192
IND=eDP-1
EXD="will be overridden later"

dir=$1
shift

xrr() {
  xrandr --dpi $DPI "$@"
}

xrrtop() {
  xrr \
    --output "$IND" --auto --pos 0x2160 --primary \
    --output "$EXD" --auto --pos 0x0 --scale 2x2
}

xrrleft() {
  xrr \
    --output "$IND" --auto --pos 3840x0 --primary \
    --output "$EXD" --auto --scale 2x2 --pos 0x0
}

xrrright() {
  xrr \
    --output "$IND" --auto --pos 0x0 --primary \
    --output "$EXD" --auto --scale 2x2 --pos 3840x0
}

xrrsingle() {
  active_exd="$(xrandr --listactivemonitors | grep -Ee '\b(HDMI|DP)\b' | awk '{print $4}')"
  xrr --output "$IND" --auto --primary \
    --output "$active_exd" --off
}

find_external_display() {
  EXD="$(xrandr -q | grep -E '\bconnected\b' | grep -v "^$IND" | cut -d ' ' -f1)"
}
find_external_display

case $dir in
  a|auto)
    if xrandr --listmonitors | grep "$EXD" -q &>/dev/null; then
      xrrright
    else
      xrrsingle
    fi
    ;;
  up|u|t|top)
    xrrtop
    ;;
  left|l)
    xrrleft
    ;;
  right|r)
    xrrright
    ;;
  single|s)
    xrrsingle
    ;;
  *)
    exit 1
    ;;
esac

(sleep 1; nitrogen --restore &>/dev/null) &
(sleep 2; launch-polybar &>/dev/null) &