Hammerspoon Config

init.lua

--required to be non zero for dragging windows to work some weird timing issue with hammerspoon fighting against osx events
hs.window.animationDuration = 0.00000001
-- require "vim"

moveOnScreenCmd = {"cmd", "shift"}

hs.hotkey.bind(moveOnScreenCmd, "H", 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(moveOnScreenCmd, "L", function()
    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(moveOnScreenCmd, "K", 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(moveOnScreenCmd, "J", 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 + max.h / 2
    f.w = max.w
    f.h = max.h / 2
    win:setFrame(f)
end)

otherHyper = {"cmd", "alt", "ctrl"}
hs.hotkey.bind(otherHyper, 'L', hs.grid.pushWindowPrevScreen)
hs.hotkey.bind(otherHyper, 'H', hs.grid.pushWindowNextScreen)
hs.hotkey.bind(otherHyper, 'space', 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
    win:setFrame(f)
end)

local mouseCircle = nil
local mouseCircleTimer = nil
function mouseHighlight()
  -- Delete an existing highlight if it exists
  if mouseCircle then
    mouseCircle:delete()
    if mouseCircleTimer then
      mouseCircleTimer:stop()
    end
  end
  -- Get the current co-ordinates of the mouse pointer
  mousepoint = hs.mouse.getAbsolutePosition()
  -- Prepare a big red circle around the mouse pointer
  mouseCircle = hs.drawing.circle(hs.geometry.rect(mousepoint.x - 150, mousepoint.y - 150, 300, 300))
  mouseCircle:setStrokeColor({["red"]=1,["blue"]=0,["green"]=0,["alpha"]=0.8})
  mouseCircle:setFill(true)
  mouseCircle:setFillColor({["red"]=1,["blue"]=1,["green"]=0,["alpha"]=0.8})
  mouseCircle:setStrokeWidth(40)
  mouseCircle:bringToFront(true)

  mouseCircle:show()

  -- Set a timer to delete the circle after 3 seconds
  mouseCircleTimer = hs.timer.doAfter(2, function()
                                        mouseCircle:hide(0.2)
                                        hs.timer.doAfter(0.6, function() mouseCircle:delete() end)
  end)
end
hs.hotkey.bind(moveOnScreenCmd, "/", mouseHighlight)

-- Reload config {{{1

function reloadConfig(files)---- {{{2
    doReload = false
    for _,file in pairs(files) do
        if file:sub(-4) == ".lua" then
            hs.reload()
            break
        end
    end
end-- }}}2

hs.hotkey.bind(otherHyper, "R", function()
    hs.reload()
    hs.alert.show("Config reloaded")
    hs.notify.new({title="Hammerspoon", informativeText="Config reloaded"}):send()
end)

-- HANDLE SCROLLING
local oldmousepos = {}
-- positive multiplier (== natural scrolling) makes mouse work like traditional scrollwheel
local scrollmult = 4 

mousetap = hs.eventtap.new({0,3,5,14,25,26,27}, function(e)
	oldmousepos = hs.mouse.getAbsolutePosition()
	local mods = hs.eventtap.checkKeyboardModifiers()
    local pressedMouseButton = e:getProperty(hs.eventtap.event.properties['mouseEventButtonNumber'])

    -- If OSX button 4 is pressed, allow scrolling
    local shouldScroll = 3 == pressedMouseButton
    if shouldScroll then
		local dx = e:getProperty(hs.eventtap.event.properties['mouseEventDeltaX'])
		local dy = e:getProperty(hs.eventtap.event.properties['mouseEventDeltaY'])
		local scroll = hs.eventtap.event.newScrollEvent({dx * scrollmult, dy * scrollmult},{},'pixel')
		scroll:post()
		
		-- put the mouse back
		hs.mouse.setAbsolutePosition(oldmousepos)
		
		return true, {scroll}
	else
		return false, {}
	end
	-- print ("Mouse moved!")
	-- print (dx)
	-- print (dy)
end)
mousetap:start()