Hammerspoon - press space+left_click on key press (used in Photoshop)

init.lua

hs.hotkey.bind({"cmd", "ctrl", "alt", "shift"}, "f2",
  -- next function is called on hotkey press
  function()
    hs.eventtap.event.newKeyEvent({}, "space", true):post()
    hs.eventtap.event.newMouseEvent(hs.eventtap.event.types["leftMouseDown"], hs.mouse.absolutePosition()):post()
  end,
  function()
    -- next function is called on hotkey release
    hs.eventtap.event.newKeyEvent({}, "space", false):post()
    hs.eventtap.event.newMouseEvent(hs.eventtap.event.types["leftMouseUp"], hs.mouse.absolutePosition()):post()
  end
)