init.lua

local cmdalt = {"cmd", "alt"}
local capslock = {'cmd', "alt", "shift", "ctrl"}

-- Set grid size.
hs.grid.GRIDWIDTH  = 4
hs.grid.GRIDHEIGHT = 6
hs.grid.MARGINX    = 0
hs.grid.MARGINY    = 0
hs.window.animationDuration = 0

hs.hotkey.bind(cmdalt, 'R', hs.reload)
hs.hotkey.bind(cmdalt, 'M', hs.grid.maximizeWindow)
hs.hotkey.bind(cmdalt, 'F',
    function()
        hs.window.focusedWindow():toggleFullScreen()
    end)

hs.hotkey.bind(cmdalt, 'J', hs.grid.pushWindowDown)
hs.hotkey.bind(cmdalt, 'K', hs.grid.pushWindowUp)
hs.hotkey.bind(cmdalt, 'H', hs.grid.pushWindowLeft)
hs.hotkey.bind(cmdalt, 'L', hs.grid.pushWindowRight)

hs.hotkey.bind(capslock, "`", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.x / 2
  f.y = max.y / 2
  f.w = max.w
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind(capslock, "6", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.w / 4
  f.y = max.y
  f.w = max.w / 2
  f.h = max.h / 3 * 2
  win:setFrame(f)
end)

hs.hotkey.bind(capslock, "5", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.x
  f.y = max.y
  f.w = max.w / 2
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind(cmdalt, "Left", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.x
  f.y = max.y
  f.w = max.w / 2
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind(capslock, "7", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.w / 2
  f.y = max.y
  f.w = max.w / 2
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind(cmdalt, "Right", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()
  f.x = max.w / 2
  f.y = max.y
  f.w = max.w / 2
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind(cmdalt, "Up", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x
  f.y = max.y
  f.w = max.w
  f.h = max.h / 2
  win:setFrame(f)
end)

hs.hotkey.bind(cmdalt, "Down", function()
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x
  f.y = max.h / 2
  f.w = max.w
  f.h = max.h / 2
  win:setFrame(f)
end)

hs.hotkey.bind(capslock, "R",
    function()
        hs.hints.windowHints()
    end)


local app_map = {
    ["1"] = "iTerm",
    ["2"] = "Termianl",
    ["M"] = "TextMate",
    ["C"] = "Google Chrome",
    ["O"] = "Firefox",
    ["W"] = "Wechat"
}

local function bind_app()
    for key, app in pairs(app_map) do
        hs.hotkey.bind({"alt"}, key,
            function()
                hs.application.open(app)
            end
        )
    end
end

bind_app()

hs.alert.show("Hammerspoon, at your service.", 3)