hammerspoon for mac window layout

init.lua

local hotkey = require 'hs.hotkey'
local screen = require 'hs.screen'
local window = require 'hs.window'
local layout = require 'hs.layout'
local geometry = require 'hs.geometry'
local application = require 'hs.application'
local hints = require 'hs.hints'
local grid = require 'hs.grid'
local logger = require 'hs.logger'
local fnutils = require 'hs.fnutils'

local log = logger.new('default', 'debug')

local primaryKey = {'option'}
layout.left65 = geometry.rect(0, 0, 0.65, 1)
layout.right55 = geometry.rect(0.45, 0, 0.55, 1)

local getFocusedWindow = function() return window.focusedWindow() end


local move = function(win, rect, toScreen)
  win:moveToUnit(rect)
  if toScreen then
    win:moveToScreen(toScreen)
  end
end
local move_left = function() move(getFocusedWindow(), layout.left50) end
local move_left_large = function() move(getFocusedWindow(), layout.left65) end
local move_right = function() move(getFocusedWindow(), layout.right50) end
local move_right_large = function() move(getFocusedWindow(), layout.right55) end

local move_large_center = function()
  local win = window.focusedWindow()
  local f = win:frame()
  local screen = screen.primaryScreen()
  local max = screen:frame()
  f.x = max.w * 0.3 / 2
  f.y = max.y
  f.w = max.w * 0.7
  f.h = max.h
  win:moveToScreen(screen)
  win:setFrameInScreenBounds(f)
end

local flat_windows  = function(wins, w, h, offx, offy)
  local index = 0
  for key, win in pairs(wins) do
    local f = win:frame()
    local screen = win:screen()
    local max = screen:frame()
    f.x = max.w * 0.1 + offx*index
    f.y = max.h * 0.1 + offy*index
    f.w = w
    f.h = h
    win:setFrame(f)
    index = index + 1
  end
end

local move_screen = function(sc)
  local win = window.focusedWindow()
  win:moveToScreen(sc)
end

hotkey.bind(primaryKey, '1', function() 
  local win = window.focusedWindow()
  local app = win:application()
  local app_name = app:title()
  local app_windows = app:allWindows()

  if app_name == 'Safari' then
    move_large_center()
  
  elseif app_name == 'Google Chrome' then
    if win:screen() == screen.primaryScreen() then
      move_left_large()
    else
      move_left()
    end
  
  elseif app_name == 'Code' then
    local win = window.focusedWindow()
    local f = win:frame()
    local max = win:screen():frame()

    if f.h >= max.h-10 then
      f.w = 950
      f.h = 900
      win:setFrame(f)
      win:centerOnScreen()
    else
      if win:screen() == screen.primaryScreen() then
        move_right_large()
      else
        move_right()
      end
    end
    
  elseif app_name == 'WebStorm' or app_name == 'WebStorm-EAP' then
    local win = window.focusedWindow()
    if win:screen() == screen.primaryScreen() then
      move_right_large()
    else
      move_right()
    end
  
  elseif app_name == 'Finder' then
    flat_windows(app_windows, 800, 500, 80, 80)
  
  else
    win:centerOnScreen()
  end
  
end)

hotkey.bind({'cmd', 'option'}, '1', function()
  move_screen(screen.primaryScreen())
end)
hotkey.bind({'cmd', 'option'}, '2', function()
  move_screen(screen.primaryScreen():next())
end)


-- reload
hotkey.bind(primaryKey, 'escape', function() 
  hs.reload()
end)