COCOS2DX Click event Analysis (5)

After Cceglviewprotocol's handletouchesbegin,handletouchesmove,handletouchesend,handletouchescancel treatment, will be cctouchdispatcher in the following functions, and will call touches, then we analyze touches this function void Cctouchdispatcher::touchesbegan (Ccset *touches    , Ccevent *pevent) {if (m_bdispatchevents) {this->touches (touches, pevent, Cctouchbegan); }}void cctouchdispatcher::touchesmoved (Ccset *touches, ccevent *pevent) {if (m_bdispatchevents) {this->to    Uches (Touches, pevent, cctouchmoved); }}void cctouchdispatcher::touchesended (Ccset *touches, ccevent *pevent) {if (m_bdispatchevents) {this->to    Uches (Touches, pevent, cctouchended); }}void cctouchdispatcher::touchescancelled (Ccset *touches, ccevent *pevent) {if (m_bdispatchevents) {THIS-&G    T;touches (Touches, pevent, cctouchcancelled); }}////Dispatch Events Distributing touch events////ccset *ptouches All touch point information//*pevent null//uindex Touch type: cctouchbegan,cctouchcancelled ..... void Cctouchdispatcher::touches (Ccset *ptouches, Ccevent *pevent,unsigned int uIndex) {ccassert (uIndex >= 0 && UIndex < 4, "");    Ccset *pmutabletouches;    M_blocked = true;  Optimization to prevent a mutable copy when it's not necessary//determine if copy unsigned int is required Utargetedhandlerscount     = M_ptargetedhandlers->count ();    unsigned int ustandardhandlerscount = M_pstandardhandlers->count ();    BOOL Bneedsmutableset = (Utargetedhandlerscount && ustandardhandlerscount);    Pmutabletouches = (bneedsmutableset? ptouches->mutablecopy (): ptouches);    struct Cctouchhandlerhelperdata shelper = M_shandlerhelperdata[uindex]; Process the target handlers 1st//Handle Target Touch event first (Utargetedhandlerscount > 0) {cctouch *pto        Uch Ccsetiterator setiter;//Because here may also send a few finger touch behavior, previously analyzed Cctouchbegan and cctouchended each time will only pass one//multiple fingers can not be pressed at the same time, always have for ( Setiter = Ptouches->begin (); Setiter! = Ptouches->end ();            ++setiter) {Ptouch = (Cctouch *) (*setiter); CctarGetedtouchhandler *phandler = NULL;    ccobject* POBJ = NULL; Traverse all Targetedhandler Ccarray_foreach (m_ptargetedhandlers, pObj) {Phandler = (Cctar                Getedtouchhandler *) (POBJ);                if (! Phandler) {break; }//any touch event starts from Cctouchbegan, how does it not begin, the move,end in the back and so on is meaningless//So how do you show interest in touch events?                is to return true at Cctouchbegan, that is, when the begin event is processed, then the//control is interested in this event, claimed (claim, declared meaning), if it is not interested in the begin, then the move,end in the back will//not be sent to you.                BOOL bclaimed = false; if (UIndex = = Cctouchbegan) {bclaimed = Phandler->getdelegate ()->cctouchbegan (pTo                    Uch, pevent);                    if (bclaimed) {phandler->getclaimedtouches ()->addobject (Ptouch);                }} else if (Phandler->getclaimedtouches ()->containsobject (Ptouch)) {//moved ended canceled                    Bclaimed = true; Switch (shelper.m_type) {case Cctouchmoved:phandler->get                        Delegate ()->cctouchmoved (Ptouch, pevent);                    Break                        Case Cctouchended:phandler->getdelegate ()->cctouchended (Ptouch, pevent);                        Phandler->getclaimedtouches ()->removeobject (Ptouch);                    Break                        Case Cctouchcancelled:phandler->getdelegate ()->cctouchcancelled (Ptouch, pevent);                        Phandler->getclaimedtouches ()->removeobject (Ptouch);                    Break The}//m_ptargetedhandlers list is prioritized from high to low, and has phagocytosis,//That is, if a high-priority control handles a finger-click Cctouchbegan event, and,//This control is set to swallow, the lower priority                -level controls cannot handle the touch event at this time//and will also remove this touch event from the Pmutabletouches multi-touch.   if (bclaimed && phandler->isswallowstouches ())             {if (bneedsmutableset) {Pmutabletouches->re                    Moveobject (Ptouch);                } break;    }}}}////process standard handlers 2nd//STD Touch event, also has priority, but no engulfing ability. All can receive if (Ustandardhandlerscount > 0 && pmutabletouches->count () > 0) {Ccstandardtouch        Handler *phandler = NULL;        ccobject* POBJ = NULL;            Ccarray_foreach (M_pstandardhandlers, pObj) {Phandler = (ccstandardtouchhandler*) (POBJ);            if (! Phandler) {break; } switch (shelper.m_type) {case cctouchbegan:phandler->getdelegate ()-                >cctouchesbegan (Pmutabletouches, pevent);            Break                Case Cctouchmoved:phandler->getdelegate ()->cctouchesmoved (pmutabletouches, pevent); Break           Case Cctouchended:phandler->getdelegate ()->cctouchesended (pmutabletouches, pevent);            Break                Case Cctouchcancelled:phandler->getdelegate ()->cctouchescancelled (pmutabletouches, pEvent);            Break    }}} if (Bneedsmutableset) {pmutabletouches->release (); }////optimization. To prevent a [handlers copy] which are expensive//the add/removes/quit is doing after the iterations//For those at that time because M_blo    Cked and not removed, the addition is added to the event-handling list.    m_blocked = false;        if (m_btoremove) {m_btoremove = false; for (unsigned int i = 0; i < m_phandlerstoremove->num; ++i) {forceremovedelegate (cctouchdelegate        *) m_phandlerstoremove->arr[i]);    } cccarrayremoveallvalues (M_phandlerstoremove);        } if (m_btoadd) {m_btoadd = false;        cctouchhandler* Phandler = NULL;        ccobject* POBJ = NULL; CcarrAy_foreach (M_phandlerstoadd, pObj) {Phandler = (cctouchhandler*) pObj;            if (! Phandler) {break;                                } if (dynamic_cast<cctargetedtouchhandler*> (phandler) = NULL) {            Forceaddhandler (Phandler, m_ptargetedhandlers);            } else {Forceaddhandler (Phandler, m_pstandardhandlers);        }} m_phandlerstoadd->removeallobjects ();        } if (m_btoquit) {m_btoquit = false;    Forceremovealldelegates (); }}

COCOS2DX Click event Analysis (5)