MixTouchAdapter for quick-cocos2d-x touch system and cocos2d-x touch system

MixTouchAdapter.lua

--[[
This is an adapter for quick-cocos2d-x touch system and cocos2d-x touch system

Usage: invoke adapt method

adapt(target, withModal)

target: Mixed. the quick obj to adjust
withModal: boolean. If swallow all touch event

-- qucik touch object
local quickTouchObj = cc.ui.UIPushButton()
-- cocos2dx touch scene
local scene = cc.Scene:create()

scene:addChild(quickTouchObj)
require("MixTouchAdapter").adapt(quickTouchObj, false)
--]]

local MixTouchAdapter = {}

local function _convertToTouchEvent(touch, name)
    local loc = touch:getLocation()
    local prevLoc = touch:getPreviousLocation()
    
    local event = {}
    event.mode = 1
    event.name = name
    
    event.x = loc.x
    event.y = loc.y
    event.prevX = prevLoc.x
    event.prevY = prevLoc.y
    
    return event
end

local function _dispatchToChildren(target, idx, event, withModal)
    if target.EventDispatcher and target:isVisible() then
        target:EventDispatcher(idx, event)
    end
    local ok, children = pcall(target.getChildren, target)
    if ok then
        for k, v in pairs(children) do
            _dispatchToChildren(v,idx,event, withModal)
        end
    end
end

function MixTouchAdapter.adapt(target, withModal)
    target.touchEventListener = cc.EventListenerTouchOneByOne:create()
    target.touchEventListener:setSwallowTouches(withModal)
    target.touchEventListener:registerScriptHandler(function(touch, event)
        local event = _convertToTouchEvent(touch,"began")
        _dispatchToChildren(target, 2, event)
        return true
    end,cc.Handler.EVENT_TOUCH_BEGAN )

    target.touchEventListener:registerScriptHandler(function(touch, event)
        local event = _convertToTouchEvent(touch,"moved")
        _dispatchToChildren(target, 2, event)
    end,cc.Handler.EVENT_TOUCH_MOVED)

    target.touchEventListener:registerScriptHandler(function(touch, event) 
        local event = _convertToTouchEvent(touch,"ended")
        _dispatchToChildren(target, 2, event)
    end,cc.Handler.EVENT_TOUCH_ENDED)

    local eventDispatcher = target:getEventDispatcher()
    eventDispatcher:addEventListenerWithFixedPriority(target.touchEventListener, -1)
    target:addNodeEventListener(cc.NODE_EVENT, function(event)
        print("remove will be called")
        if event.name == "exit" then
            local eventDispatcher = target:getEventDispatcher()
            eventDispatcher:removeEventListener(target.touchEventListener)
        end
    end)
 end
 
return MixTouchAdapter