Setup correct resolutions based on connected displays

autotop.rb

#!/usr/bin/ruby

def dpi
  147
end

def desktop
  system "xrandr --output VGA1 --auto --left-of LVDS1 --output LVDS1 --auto --primary --dpi #{dpi}"
  system "xset dpms force on" # wake up monitor from power saving mode
  system "marble-mouse left"
end

def auto
  system "xrandr --auto --dpi #{dpi}"
end

def main
  if system "xrandr | grep -q 'VGA1 connected'"
    desktop
  else
    auto
  end
  system 'xset dpms force on' # wake up monitor from power saving mode
end

main