Hammerspoon config (window moving and resizing)

hammerspoon — init.lua

-- Inspired by Linux alt-drag or Better Touch Tools move/resize functionality
-- from https://gist.github.com/kizzx2/e542fa74b80b7563045a#gistcomment-2023593
-- Command-Ctrl-move: move window under mouse
-- Command-Control-Shift-move: resize window under mouse
function get_window_under_mouse()
    local my_pos = hs.geometry.new(hs.mouse.getAbsolutePosition())
    local my_screen = hs.mouse.getCurrentScreen()
    return hs.fnutils.find(hs.window.orderedWindows(), function(w)
                              return my_screen == w:screen() and
                                 w:isStandard() and
                                 (not w:isFullScreen()) and
                                 my_pos:inside(w:frame())
    end)
 end

dragging = {}                   -- global variable to hold the dragging/resizing state

drag_event = hs.eventtap.new({ hs.eventtap.event.types.mouseMoved }, function(e)
     if not dragging then return nil end
     if dragging.mode==3 then -- just move
        local dx = e:getProperty(hs.eventtap.event.properties.mouseEventDeltaX)
        local dy = e:getProperty(hs.eventtap.event.properties.mouseEventDeltaY)
        dragging.win:move({dx, dy}, nil, false, 0)
     else -- resize
        local pos=hs.mouse.getAbsolutePosition()
        local w1 = dragging.size.w + (pos.x-dragging.off.x)
        local h1 = dragging.size.h + (pos.y-dragging.off.y)
        dragging.win:setSize(w1, h1)
     end
end)

flags_event = hs.eventtap.new({ hs.eventtap.event.types.flagsChanged }, function(e)
     local flags = e:getFlags()
     local mode=(flags.shift and 1 or 0) + (flags.ctrl and 2 or 0) + (flags.alt and 4 or 0)
     if mode==3 or mode==5 then -- valid modes
        if dragging then
           if dragging.mode == mode then return nil end -- already working
        else
           -- only update window if we hadn't started dragging/resizing already
           dragging={win = get_window_under_mouse()}
           if not dragging.win then -- no good window
              dragging=nil
              return nil
           end
        end
        dragging.mode = mode   -- 3=drag, 5=resize
        if mode==5 then
           dragging.off=hs.mouse.getAbsolutePosition()
           dragging.size=dragging.win:size()
        end
        drag_event:start()
     else                      -- not a valid mode
        if dragging then
           drag_event:stop()
           dragging = nil
        end
     end
     return nil
end)
flags_event:start()

hs.loadSpoon('ControlEscape'):start()

mxMasterSideButtons = hs.eventtap.new({ hs.eventtap.event.types.otherMouseDown }, function(e)
  local button = e:getProperty(
      hs.eventtap.event.properties['mouseEventButtonNumber']
  )
  local flags = e:getFlags()
  -- print(string.format("Clicked Mouse Button: %i", button))
  if button == 2 then -- MAX Master wheel
    if flags.cmd then
      hs.eventtap.event.newKeyEvent({'cmd'}, 'l', true):post()
      hs.eventtap.event.newKeyEvent({'cmd'}, 'c', true):post()
      return true
    end
    return nil
  elseif button == 3 then -- MX Master lower side button
    if flags.alt then
      hs.eventtap.event.newKeyEvent({'cmd'}, 'w', true):post()
    elseif flags.cmd then
      hs.eventtap.event.newKeyEvent({'ctrl', 'shift'}, 'tab', true):post()
    else
      hs.eventtap.event.newKeyEvent({'cmd'}, '[', true):post()
    end
    return true
  elseif button == 4 then -- MAX Master upper side button
    if flags.cmd then
      hs.eventtap.event.newKeyEvent({'ctrl'}, 'tab', true):post()
    else
      hs.eventtap.event.newKeyEvent({'cmd'}, ']', true):post()
    end
    return true
  else
    return nil
  end
end)

mxMasterSideButtons:start()

keyboardHyperFunctions = hs.eventtap.new({ hs.eventtap.event.types.keyDown }, function(e)
  local keycode = e:getProperty(hs.eventtap.event.properties['keyboardEventKeycode'])
  -- local flags = hs.eventtap.checkKeyboardModifiers(true)
  local flags = e:getFlags()

  if keycode == 125 then -- down arrow
    if flags.cmd and flags.alt and flags.ctrl and flags.shift then
      local out, _, _, _ = hs.execute('/Users/feifan/bin/ddcctl -d 1 -b 10-')
      print(out)
      return true
    end
  elseif keycode == 126 then -- up arrow
    if flags.cmd and flags.alt and flags.ctrl and flags.shift then
      local out, _, _, _ = hs.execute('/Users/feifan/bin/ddcctl -d 1 -b 10+')
      print(out)
      return true
    end
  end
  return nil
end)

keyboardHyperFunctions:start()

wakeWatcher = hs.caffeinate.watcher.new(function(eventType)
  if (eventType == hs.caffeinate.watcher.systemDidWake) then
    hs.reload()
  end
end)

wakeWatcher:start()

-- App launchers
hs.hotkey.bind({'ctrl', 'alt', 'cmd', 'shift'}, 'M', function() hs.application.launchOrFocus('Messages') end)
hs.hotkey.bind({'ctrl', 'alt', 'cmd', 'shift'}, 'S', function() hs.application.launchOrFocus('Safari') end)
hs.hotkey.bind({'ctrl', 'alt', 'cmd', 'shift'}, 'V', function() hs.application.launchOrFocus('Visual Studio Code') end)
hs.hotkey.bind({'ctrl', 'alt', 'cmd', 'shift'}, 'X', function() hs.application.launchOrFocus('Xcode') end)