hammerspoon settings for Marble Trackball

init.lua

function dump(o)
    if type(o) == 'table' then
       local s = '{ '
       for k,v in pairs(o) do
          if type(k) ~= 'number' then k = '"'..k..'"' end
          s = s .. '['..k..'] = ' .. dump(v) .. ','
       end
       return s .. '} '
    else
       return tostring(o)
    end
 end

local inspect = require('inspect')
print(dump(hs.application.runningApplications()))

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "R", function()
    hs.reload()
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "Z", function()
    local username = os.date('jlee-%b%d-%H%M@gmail.com')
    hs.eventtap.keyStrokes(username);
    hs.pasteboard.setContents(username);
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "X", function()
    hs.eventtap.keyStrokes('Conference1!')
end)

env = require "env"
hs.hotkey.bind({"cmd", "alt", "ctrl"}, "V", function()
    hs.eventtap.keyStrokes(env.open)
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "M", function()
    hs.eventtap.keyStrokes('d0bf2bcc9af7ef6fe6bb2a4d543292f1')
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "N", function()
    hs.eventtap.keyStrokes('SVOoQJaeX0eLboUOU0wSoQtt')
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "pad1", function()
    hs.application.launchOrFocus("Google Chrome")
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "pad2", function()
    hs.application.launchOrFocus("Visual Studio Code")
end)

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "pad3", function()
    hs.application.launchOrFocus("iTerm")
end)

hs.alert.show("Config loaded")

-- HANDLE SCROLLING WITH MOUSE BUTTON PRESSED
local scrollMouseButton = 3
local deferred = false

overrideOtherMouseDown = hs.eventtap.new({ hs.eventtap.event.types.otherMouseDown }, function(e)
    local pressedMouseButton = e:getProperty(hs.eventtap.event.properties['mouseEventButtonNumber'])

    if scrollMouseButton == pressedMouseButton 
        then
            deferred = true
            return true
        end
end)

overrideOtherMouseUp = hs.eventtap.new({ hs.eventtap.event.types.otherMouseUp }, function(e)
    local pressedMouseButton = e:getProperty(hs.eventtap.event.properties['mouseEventButtonNumber'])
    if scrollMouseButton == pressedMouseButton 
        then 
            if (deferred) 
                then
                    overrideOtherMouseDown:stop()
                    overrideOtherMouseUp:stop()
                    
                    overrideOtherMouseDown:start()
                    overrideOtherMouseUp:start()
                    return true
                end
            return false
            end
        return false
end)

local oldmousepos = {}
local scrollmult = -.75	-- negative multiplier makes mouse work like traditional scrollwheel

dragOtherToScroll = hs.eventtap.new({ hs.eventtap.event.types.otherMouseDragged }, function(e)
    local pressedMouseButton = e:getProperty(hs.eventtap.event.properties['mouseEventButtonNumber'])

    if scrollMouseButton == pressedMouseButton 
        then 
            -- print("scroll");
            deferred = false
            oldmousepos = hs.mouse.getAbsolutePosition()    
            local dx = e:getProperty(hs.eventtap.event.properties['mouseEventDeltaX'])
            local dy = e:getProperty(hs.eventtap.event.properties['mouseEventDeltaY'])

            local dxfinal = 0
            local dyfinal = dy * math.abs(dy) * scrollmult

            local scroll = hs.eventtap.event.newScrollEvent({dxfinal, dyfinal},{},'pixel')
            -- put the mouse back
            hs.mouse.setAbsolutePosition(oldmousepos)
            return true, {scroll}
        else 
            return false, {}
        end 
end)

-- keyDown:start()
overrideOtherMouseDown:start()
overrideOtherMouseUp:start()
dragOtherToScroll:start()

init with middle click working, but on mousedown instead of mouseup

Cleaned up and added additional keyboard bindings.

added application bindings