KDvoid CCScrollLayer::claimTouch ( CCTouch* pTouch )
{
CCTouchDispatcher* pDispatcher = CCDirector::sharedDirector ( )->getTouchDispatcher ( );
CCArray* pTargetedHandlers = pDispatcher->getTargetedHandlers ( );
// Enumerate through all targeted handlers.
CCObject* pObject;
CCARRAY_FOREACH ( pTargetedHandlers, pObject )
{
CCTargetedTouchHandler* pHandler = (CCTargetedTouchHandler*) pObject;
// Only our handler should claim the touch.
if ( pHandler->getDelegate ( ) == this )
{
if ( !pHandler->getClaimedTouches ( )->containsObject ( pTouch ) )
{
pHandler->getClaimedTouches ( )->addObject ( pTouch );
}
}
else
{
// Steal touch from other targeted delegates, if they claimed it.
if ( pHandler->getClaimedTouches ( )->containsObject ( pTouch ) )
{
if ( pHandler->getDelegate ( ) )
{
pHandler->getDelegate ( )->ccTouchEnded ( pTouch, KD_NULL );
}
pHandler->getClaimedTouches ( )->removeObject ( pTouch );
}
}
}
CCTargetedTouchHandler* CCTargetedTouchHandler::handlerWithDelegate(CCTouchDelegate *pDelegate, int nPriority, bool bSwallow)
{
CCTargetedTouchHandler *pHandler = new CCTargetedTouchHandler();
if (pHandler)
{
if (pHandler->initWithDelegate(pDelegate, nPriority, bSwallow))
{
pHandler->autorelease();
}
else
{
CC_SAFE_RELEASE_NULL(pHandler);
}
}
return pHandler;
}
/** Hackish stuff - stole touches from other CCTouchDispatcher targeted delegates.
Used to claim touch without receiving ccTouchBegan. */
void UIScrollLayer::claimTouch(CCTouch* pTouch)
{
CCTouchDispatcher* pDispatcher = CCDirector::sharedDirector()->getTouchDispatcher();
CCTargetedTouchHandler* handler = (CCTargetedTouchHandler*)pDispatcher->findHandler(this);
if (handler)
{
CCSet* claimedTouches = handler->getClaimedTouches();
if (!claimedTouches->containsObject(pTouch))
{
claimedTouches->addObject(pTouch);
}
else
{
CCLOGERROR("CCScrollLayer::claimTouch is already claimed!");
}
}
}
//
// dispatch events
//
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 is not necessary
unsigned int 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
//
if (uTargetedHandlersCount > 0)
{
CCTouch *pTouch;
CCSetIterator setIter;
for (setIter = pTouches->begin(); setIter != pTouches->end(); ++setIter)
{
pTouch = (CCTouch *)(*setIter);
CCTargetedTouchHandler *pHandler;
CCMutableArray<CCTouchHandler*>::CCMutableArrayIterator arrayIter;
for (arrayIter = m_pTargetedHandlers->begin(); arrayIter != m_pTargetedHandlers->end(); ++arrayIter)
/*for (unsigned int i = 0; i < m_pTargetedHandlers->num; ++i)*/
{
pHandler = (CCTargetedTouchHandler *)(*arrayIter);
if (! pHandler)
{
break;
}
bool bClaimed = false;
if (uIndex == CCTOUCHBEGAN)
{
bClaimed = pHandler->getDelegate()->ccTouchBegan(pTouch, pEvent);
if (bClaimed)
{
pHandler->getClaimedTouches()->addObject(pTouch);
}
} else
if (pHandler->getClaimedTouches()->containsObject(pTouch))
{
// moved ended cancelled
bClaimed = true;
switch (sHelper.m_type)
{
case CCTOUCHMOVED:
pHandler->getDelegate()->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;
}
}
if (bClaimed && pHandler->isSwallowsTouches())
{
if (bNeedsMutableSet)
{
pMutableTouches->removeObject(pTouch);
}
break;
}
}
}
}
//
// process standard handlers 2nd
//
if (uStandardHandlersCount > 0 && pMutableTouches->count() > 0)
{
CCMutableArray<CCTouchHandler*>::CCMutableArrayIterator iter;
CCStandardTouchHandler *pHandler;
for (iter = m_pStandardHandlers->begin(); iter != m_pStandardHandlers->end(); ++iter)
{
pHandler = (CCStandardTouchHandler*)(*iter);
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 is expensive
// the add/removes/quit is done after the iterations
//
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;
CCMutableArray<CCTouchHandler*>::CCMutableArrayIterator iter;
CCTouchHandler *pHandler;
for (iter = m_pHandlersToAdd->begin(); iter != m_pHandlersToAdd->end(); ++iter)
{
pHandler = *iter;
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();
}
}