Config file for hammerspoon

init.lua

local hotkey      = require "hs.hotkey"
local application = require "hs.application"

-- HOTKEYS
local mash       = {"cmd", "alt", "ctrl"}
local app_opener = {"cmd", "ctrl"}

-- Helpers
function resize_and_move(direction)
  return function()
    local win = hs.window.focusedWindow()
    local f = win:frame()
    local screen = win:screen()
    local max = screen:frame()

    if direction == "left" then f.x = max.x end
    if direction == "right" then f.x = max.x + (max.w / 2) end

    f.y = max.y
    f.w = max.w / 2
    f.h = max.h

    win:setFrame(f)
  end
end

local frameCache = {}
function toggle_window_maximized()
  local win = hs.window.focusedWindow()
  if frameCache[win:id()] then
      win:setFrame(frameCache[win:id()])
      frameCache[win:id()] = nil
  else
      frameCache[win:id()] = win:frame()
      win:maximize()
  end
end

function toggle_app(app_name)
  return function()
    local app = hs.appfinder.appFromName(app_name)

    if not app then
      application.launchOrFocus(app_name)
    end

    current_app = application.frontmostApplication()
    if current_app == app then
      app:hide()
    else
      application.launchOrFocus(app_name)
    end

  end
end

-- SHORTCUTS

-- Resize to half and move to the left
hotkey.bind(mash, "Left", resize_and_move('left'))
-- Resize to half and move to the right
hotkey.bind(mash, "Right", resize_and_move('right'))
-- Zoom the window (not fullscreen)
hotkey.bind(mash, "Up", toggle_window_maximized)
-- Focus or open apps
hotkey.bind( app_opener, "C", toggle_app("Google Chrome") )
hotkey.bind( app_opener, "S", toggle_app("Sublime Text")  )
hotkey.bind( app_opener, "I", toggle_app("iTerm")         )
hotkey.bind( app_opener, "L", toggle_app("Slack")         )
hotkey.bind( app_opener, "K", toggle_app("Skype")         )
hotkey.bind( app_opener, "T", toggle_app("Tweetbot")      )