cocos2dx 点击事件分析（4）

概述1、添加单点触摸事件，单点触摸事件有优先级，bSwallowsTouches是否吞噬，高优先级的会优先响应，而且可以吞噬事件，不让触摸事件往低优先级传递。void CCTouchDispatcher::addTargetedDelegate(CCTouchDelegate *pDelegate, int nPriority, bool bSwallowsTouches){

1、添加单点触摸事件，单点触摸事件有优先级，bSwallowstouches是否吞噬，高优先级的会优先响应，而且可以吞噬事件，不让触摸事件往低优先级传递。voID CCtouchdispatcher::addTargetedDelegate(CCtouchDelegate *pDelegate,int nPriority,bool bSwallowstouches){        CCtouchHandler *pHandler = CCTargetedtouchHandler::handlerWithDelegate(pDelegate,nPriority,bSwallowstouches);    if (! m_bLocked)    {        forceAddHandler(pHandler,m_pTargetedHandlers);    }    else    {        /* If pHandler is contained in m_pHandlersToRemove,if so remove it from m_pHandlersToRemove and return.         * Refer issue #752(cocos2d-x)         */        if (ccCArrayContainsValue(m_pHandlersToRemove,pDelegate))        {            ccCArrayRemoveValue(m_pHandlersToRemove,pDelegate);            return;        }        //CCArray* m_pHandlersToAdd这个可以理解为一个临时保存CCtouchHandler的地方，	//m_bLocked 如果这个值为true，这把CCtouchHandler先加入到m_pHandlersToAdd，	//然后在合适的时间，即CCtouchdispatcher::touches函数中，再把m_pHandlersToAdd数组里面	//CCtouchHandler加入到m_pTargetedHandlers或者m_pStandardHandlers中。        m_pHandlersToAdd->addobject(pHandler);        m_bToAdd = true;    }}-->>//// handlers management根据优先级进行排序，然后添加到单点触摸事件列表中,由此可知，//值越小，优先级越高//voID CCtouchdispatcher::forceAddHandler(CCtouchHandler *pHandler,CCArray *pArray){    unsigned int u = 0;    CCObject* pObj = NulL;    CCARRAY_FOREACH(pArray,pObj)     {         CCtouchHandler *h = (CCtouchHandler *)pObj;         if (h)         {             if (h->getPriority() < pHandler->getPriority())             {                 ++u;             }              if (h->getDelegate() == pHandler->getDelegate())             {                 CCAssert(0,"");                 return;             }         }     }    pArray->insertObject(pHandler,u);}2、移除：和加入类似voID CCtouchdispatcher::removeDelegate(CCtouchDelegate *pDelegate){    if (pDelegate == NulL)    {        return;    }    if (! m_bLocked)    {        forceRemoveDelegate(pDelegate);    }    else    {        /* If pHandler is contained in m_pHandlersToAdd,if so remove it from m_pHandlersToAdd and return.         * Refer issue #752(cocos2d-x)         */        CCtouchHandler *pHandler = findHandler(m_pHandlersToAdd,pDelegate);        if (pHandler)        {            m_pHandlersToAdd->removeObject(pHandler);            return;        }        ccCArrayAppendValue(m_pHandlersToRemove,pDelegate);        m_bToRemove = true;    }}-->>voID CCtouchdispatcher::removeDelegate(CCtouchDelegate *pDelegate){    if (pDelegate == NulL)    {        return;    }    if (! m_bLocked)    {        forceRemoveDelegate(pDelegate);    }    else    {        /* If pHandler is contained in m_pHandlersToAdd,pDelegate);        m_bToRemove = true;    }}

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