Enable/disable hot corners

hot_corners.rb

#!/usr/local/opt/ruby/bin/ruby

def set_hot_corners(enable)
  corner_none = 0
  corner_mission_control = 2
  corner_application_windows = 3
  corner_desktop = 4
  corner_start_screen_saver = 5
  corner_disable_screen_saver = 6
  corner_dashboard = 7
  corner_put_display_to_sleep = 10
  corner_launchpad = 11
  corner_notification_center = 12

  modifier_none = 0
  modifier_shift = 131072
  modifier_control = 262144
  modifier_option = 524288
  modifier_cmd = 1048576

  if enable
    top_left = corner_put_display_to_sleep
    top_right = corner_desktop
    bottom_left = corner_dashboard
    bottom_right = corner_mission_control
  else
    top_left = corner_none
    top_right = corner_none
    bottom_left = corner_none
    bottom_right = corner_none
  end

  `defaults write com.apple.dock wvous-tl-corner -int #{top_left}`
  `defaults write com.apple.dock wvous-tl-modifier -int #{modifier_cmd}`

  `defaults write com.apple.dock wvous-tr-corner -int #{top_right}`
  `defaults write com.apple.dock wvous-tr-modifier -int #{modifier_none}`

  `defaults write com.apple.dock wvous-bl-corner -int #{bottom_left}`
  `defaults write com.apple.dock wvous-bl-modifier -int #{modifier_cmd}`

  `defaults write com.apple.dock wvous-br-corner -int #{bottom_right}`
  `defaults write com.apple.dock wvous-br-modifier -int #{modifier_none}`

  `killall Dock`

end

def enable
  set_hot_corners(true)
  p "Hot Corners Enabled"
end

def disable
  set_hot_corners(false)
  p "Hot Corners Disabled"
end

if ARGV.first == "off"
  disable
else
  enable
end