.hammerspoon/init.lua

hs.window.animationDuration = 0

-- set up reload on modify
hs.pathwatcher.new(os.getenv("HOME") .. "/.hammerspoon/", hs.reload):start()

-- aliases and partial bindings to make life easier
local bindKey  = hs.hotkey.bind
local cmd      = hs.fnutils.partial(bindKey, {"cmd"})
local cmdShift = hs.fnutils.partial(bindKey, {"cmd", "shift"})
local cmdCtrl  = hs.fnutils.partial(bindKey, {"cmd", "ctrl"})

function focusedWindow() return hs.window.focusedWindow() or hs.window.desktop() end
function focusTo(direction) hs.window['focusWindow' .. direction](focusedWindow()) end

-- and the key bindings
cmdShift('r', hs.reload)

cmd('k',  function () focusTo('North') end)
cmd('up', function () focusTo('North') end)

cmd('j',    function () focusTo('South') end)
cmd('down', function () focusTo('South') end)

cmd('h',    function () focusTo('West') end)
cmd('left', function () focusTo('West') end)

cmd('l',     function () focusTo('East') end)
cmd('right', function () focusTo('East') end)

cmdShift('up', function () focusedWindow():maximize() end)

cmdShift('down', function () focusedWindow():minimize() end)

cmdShift('left',  function () focusedWindow():moveToUnit(hs.layout.left50) end)
cmdShift('right', function () focusedWindow():moveToUnit(hs.layout.right50) end)

cmdCtrl('left',  function () focusedWindow():moveOneScreenWest() end)
cmdCtrl('right', function () focusedWindow():moveOneScreenEast() end)

cmd('return', function ()
  hs.applescript.applescript([[
    tell application "iTerm"
      set newterm to (create window with default profile)
      tell newterm to activate
    end tell
  ]])
end)

-- cache window frames before moving?
-- save cache?
-- focus by direction is a little strict