hammerspoon-shiftit.lua

-- to be used in init.lua
-- based on https://github.com/fikovnik/ShiftIt/wiki/The-Hammerspoon-Alternative
-- replicates ShiftIt functionality

function setScreenPrimary()
  local currentScreen = hs.screen.mainScreen()
  currentScreen:setPrimary()
end

function moveToNextScreen()
  local log = hs.logger.new('my-shiftit')
  local win = hs.window.focusedWindow()
  local currentScreen = hs.screen.mainScreen()
  local nextScreen = currentScreen:next()
  log.e("Moving window")
  log.e(nextScreen:name())
  win:moveToScreen(nextScreen)

  -- Now hide and unhide and setfocus on the window..
  -- this is because `moveToScreen` only moves the window,
  -- but the active menu bar remains in the old screen.
  -- so pressing CMD+N again won't work because the focus
  -- is on the old screen. doing this hide+unhide+focus 
  -- shifts the menu focus also.
  -- Jasim.
  win:application():hide()
  hs.timer.doAfter(0.1, function()
    win:application():unhide()
    win:application():activate(true)
    -- win:becomeMain()
    -- win:focus()
    -- win:raise()
  end)
end

hs.window.animationDuration = 0
units = {
  right30       = { x = 0.70, y = 0.00, w = 0.30, h = 1.00 },
  right70       = { x = 0.30, y = 0.00, w = 0.70, h = 1.00 },
  right50       = { x = 0.50, y = 0.00, w = 0.50, h = 1.00 },
  left70        = { x = 0.00, y = 0.00, w = 0.70, h = 1.00 },
  left50        = { x = 0.00, y = 0.00, w = 0.50, h = 1.00 },
  left30        = { x = 0.00, y = 0.00, w = 0.30, h = 1.00 },
  top50         = { x = 0.00, y = 0.00, w = 1.00, h = 0.50 },
  bot50         = { x = 0.00, y = 0.50, w = 1.00, h = 0.50 },
  upright30     = { x = 0.70, y = 0.00, w = 0.30, h = 0.50 },
  botright30    = { x = 0.70, y = 0.50, w = 0.30, h = 0.50 },
  upleft70      = { x = 0.00, y = 0.00, w = 0.70, h = 0.50 },
  botleft70     = { x = 0.00, y = 0.50, w = 0.70, h = 0.50 },
  maximum       = { x = 0.00, y = 0.00, w = 1.00, h = 1.00 }
}

mash = { 'ctrl', 'option', 'cmd' }

hs.hotkey.bind(mash, 'up', function() hs.window.focusedWindow():move(units.top50,    nil, true) end)
hs.hotkey.bind(mash, 'down', function() hs.window.focusedWindow():move(units.bot50,    nil, true) end)
hs.hotkey.bind(mash, 'left', function() hs.window.focusedWindow():move(units.left50,    nil, true) end)
hs.hotkey.bind(mash, 'right', function() hs.window.focusedWindow():move(units.right50,    nil, true) end)
hs.hotkey.bind(mash, 'm', function() hs.window.focusedWindow():move(units.maximum,    nil, true) end)
hs.hotkey.bind(mash, 'n', moveToNextScreen)
hs.hotkey.bind(mash, 'p', setScreenPrimary)

-- hs.hotkey.bind(mash, 'l', function() hs.window.focusedWindow():move(units.right30,    nil, true) end)
-- hs.hotkey.bind(mash, 'h', function() hs.window.focusedWindow():move(units.left70,     nil, true) end)
-- hs.hotkey.bind(mash, 'k', function() hs.window.focusedWindow():move(units.top50,      nil, true) end)
-- hs.hotkey.bind(mash, 'j', function() hs.window.focusedWindow():move(units.bot50,      nil, true) end)
-- hs.hotkey.bind(mash, ']', function() hs.window.focusedWindow():move(units.upright30,  nil, true) end)
-- hs.hotkey.bind(mash, '[', function() hs.window.focusedWindow():move(units.upleft70,   nil, true) end)
-- hs.hotkey.bind(mash, ';', function() hs.window.focusedWindow():move(units.botleft70,  nil, true) end)
-- hs.hotkey.bind(mash, "'", function() hs.window.focusedWindow():move(units.botright30, nil, true) end)
-- hs.hotkey.bind(mash, 'm', function() hs.window.focusedWindow():move(units.maximum,    nil, true) end)