#! /bin/bash
# MONITOR SCALING HELPER
# by Chris Webster

# This is a somewhat hackish, but effective way to
# get my MacBook Retina display to simulate "HiDPI" scaling mode
# on while using 1x1 scaling on my external monitor (iMac in display mode).
# There is slight blurring on MacBook display in dual mode, but it's
# generally worth it...

# See how we were called.
case "$1" in
  # Dual monitors - second monitor in non-HiDPI, main monitor simulating proper scaling with zoom
  dual)
   echo Setting up single monitor scaling.
   gsettings set org.gnome.desktop.interface scaling-factor 1
   gsettings set org.gnome.desktop.interface text-scaling-factor 1
   xrandr --output eDP-1 --scale .5x.5
   ;;

 # Single HiDPI monitor
 single)
   echo Setting up single monitor HiDPI scaling.
   # make sure the hackish zooming is turned off (set to 1x1)
   xrandr --output eDP-1 --scale 1x1
   gsettings set org.gnome.desktop.interface scaling-factor 2
   gsettings set org.gnome.desktop.interface text-scaling-factor 2
   ;;

  *)
  echo $"Usage: $0 {dual|single}"
  ;;
esac