My hammerspoon config

init.lua

logger = hs.logger.new('main')

--- functions
function open(name)
    return function()
        hs.application.launchOrFocus(name)
        if name == 'Finder' then
            hs.appfinder.appFromName(name):activate()
        end
    end
end

--- quick open applications
hs.hotkey.bind({"alt"}, "E", open("Finder"))
hs.hotkey.bind({"alt"}, "C", open("Google Chrome"))
hs.hotkey.bind({"alt"}, "F", open("Fork"))
hs.hotkey.bind({"alt"}, "T", open("iTerm"))
hs.hotkey.bind({"alt"}, "X", open("Xcode"))
hs.hotkey.bind({"alt"}, "S", open("Sublime Text"))
hs.hotkey.bind({"alt"}, "A", open("Slack"))
hs.hotkey.bind({"alt"}, "M", open("Spotify"))
hs.hotkey.bind({"alt"}, "I", open("iTunes"))
hs.hotkey.bind({"alt"}, "Z", open("Zeplin"))


-- Resize window for chunk of screen.
-- For x and y: use 0 to expand fully in that dimension, 0.5 to expand halfway
-- For w and h: use 1 for full, 0.5 for half
function push(x, y, w, h)
    local win = hs.window.focusedWindow()
    local f = win:frame()
    local screen = win:screen()
    local max = screen:frame()

    f.x = max.x + (max.w*x)
    f.y = max.y + (max.h*y)
    f.w = max.w*w
    f.h = max.h*h
    win:setFrame(f)
end


--- window
hs.window.animationDuration = 0.125

--- Detect if we're on a large or small screen
local screen = hs.screen.primaryScreen()

--- if we're on a smaller screen, use screen halves
--- on 34" Ultrawides go for 1/3s
if screen:frame().w < 2561 then
  size = 1 / 2
  offset = size
else
  size = 1 / 3
  offset = size * 2
end

--- Bindings for smaller keyboards
hs.hotkey.bind({"ctrl", "alt", "cmd"}, "Left", function() push(0, 0, size, 1) end)
hs.hotkey.bind({"ctrl", "alt", "cmd"}, "Up", function() push(size, 0, size, 1) end)
hs.hotkey.bind({"ctrl", "alt", "cmd"}, "Right", function() push(offset, 0, size, 1) end)
hs.hotkey.bind({"ctrl", "alt", "cmd"}, "Down", function() push(0, 0, 1, 1) end)

--- Bindings for the full size magic keyboard
hs.hotkey.bind({}, "F13", function() push(0, 0, 0.5, 1) end)
hs.hotkey.bind({}, "F14", function() push(0, 0, 1, 1) end)
hs.hotkey.bind({}, "F15", function() push(0.5, 0, 0.5, 1) end)
hs.hotkey.bind({}, "F16", function() push(0, 0, 0.5, 0.5) end)
hs.hotkey.bind({}, "F17", function() push(0.5, 0, 0.5, 0.5) end)
hs.hotkey.bind({}, "F18", function() push(0, 0.5, 0.5, 0.5) end)
hs.hotkey.bind({}, "F19", function() push(0.5, 0.5, 0.5, 0.5) end)


--- Allow hot reloading of config
hs.hotkey.bind({"cmd", "alt", "ctrl"}, "R", function()
  hs.reload()
end)
hs.alert.show("Config loaded")