HammerSpoon configuration for MacOS

hammerspoon.init.lua

-- https://gist.github.com/nyergler/7056c61174194a9af9b4d5d727f1b566

-- Magnet replacement bindings
hs.hotkey.bind({"ctrl", "alt"}, "left", function()
  -- size focused window to left half of display
  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({"ctrl", "alt"}, "a", function()
  -- size focused window to left third of display
  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 / 3
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "s", function()
  -- size focused window to middle third of display
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x + (max.w / 3)
  f.y = max.y
  f.w = max.w / 3
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "d", function()
  -- size focused window to right third of display
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x + (max.w / 3 * 2)
  f.y = max.y
  f.w = max.w / 3
  f.h = max.h
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "right", function()
  -- size focused window to right half of display
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

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

hs.hotkey.bind({"ctrl", "alt"}, "return", function()
  -- size focused window to size of desktop
  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
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "g", function()
  -- size focused window to mostly maximized (1/8 diagonal to 6/8 diagonal)
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x + max.w / 8
  f.y = max.y + max.h / 8
  f.w = max.w * 6 / 8
  f.h = max.h * 6 / 8
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "h", function()
  -- size focused window to mostly maximized (1/16 diagonal to 15/16 diagonal)
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x + max.w / 16
  f.y = max.y + max.h / 16
  f.w = max.w * 14 / 16
  f.h = max.h * 14 / 16
  win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "alt"}, "j", function()
  -- size focused window to mostly maximized (1/64 diagonal to 63/64 diagonal)
  local win = hs.window.focusedWindow()
  local f = win:frame()
  local screen = win:screen()
  local max = screen:frame()

  f.x = max.x + max.w / 64
  f.y = max.y + max.h / 64
  f.w = max.w * 62 / 64
  f.h = max.h * 62 / 64
  win:setFrame(f)
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "F", function()
  -- toggle the focused window to full screen (workspace)
  local win = hs.window.focusedWindow()
  win:setFullScreen(not win:isFullScreen())
end)