.h
typedef enum { kCcmenuStateWaiting,// 表示没有菜单项被选中 kCcmenuStateTrackingtouch // 表示有菜单项被选中} tCcmenuState; enum { //* priority used by the menu for the event handler kCcmenuHandlerPriority = -128,}; class CC_DLL Ccmenu : public cclayerRGBA // Ccmenu的基类居然是cclayer！{ bool m_bEnabled; // Ccmenu是否接收触摸事件 public: Ccmenu() : m_pSelectedItem(NulL) {} virtual ~Ccmenu(){} // 创建一个空菜单 static Ccmenu* create(); // 根据多个菜单项列创建菜单 static Ccmenu* create(CcmenuItem* item,...); // 通过子菜单项的数组创建菜单 static Ccmenu* createWithArray(CCArray* pArrayOfItems); // 通过一个菜单项创建菜单 static Ccmenu* createWithItem(CcmenuItem* item); // 通过多个菜单项列创建菜单 static Ccmenu* createWithItems(CcmenuItem *firstItem,va_List args); // 初始化空菜单 bool init(); // 通过子菜单项数组初始化菜单 bool initWithArray(CCArray* pArrayOfItems); // 垂直方向默认间隙排列 voID alignItemsvertically(); //垂直方向指定间隙排列 voID alignItemsverticallyWithpadding(float padding); // 水平方向默认间隙排列 voID alignItemsHorizontally(); // 水平方向指定间隙排列 voID alignItemsHorizontallyWithpadding(float padding); // 通过每行个数排列 voID alignItemsInColumns(unsigned int columns,...); voID alignItemsInColumns(unsigned int columns,va_List args); // ? voID alignItemsInColumnsWithArray(CCArray* rows); // 通过每列个数排列 voID alignItemsInRows(unsigned int rows,...); voID alignItemsInRows(unsigned int rows,va_List args); // ? voID alignItemsInRowsWithArray(CCArray* columns); // 设置事件处理优先级，默认为kCcmenutouchPriority voID setHandlerPriority(int newPriority); // 基类方法 virtual voID addChild(CCNode * child); virtual voID addChild(CCNode * child,int zOrder); virtual voID addChild(CCNode * child,int zOrder,int tag); virtual voID registerWithtouchdispatcher(); virtual voID removeChild(CCNode* child,bool cleanup); // 触摸事件 virtual bool cctouchBegan(CCtouch* touch,CCEvent* event); virtual voID cctouchended(CCtouch* touch,CCEvent* event); virtual voID cctouchCancelled(CCtouch *touch,CCEvent* event); virtual voID cctouchmoved(CCtouch* touch,CCEvent* event); // 退出调用函数 virtual voID onExit(); // ？ virtual voID setopacityModifyRGB(bool bValue) {CC_UNUSED_ParaM(bValue);} virtual bool isOpacityModifyRGB(voID) { return false;} // 获取/设置菜单是否可用 virtual bool isEnabled() { return m_bEnabled; } virtual voID setEnabled(bool value) { m_bEnabled = value; }; protected: // 返回被触摸的菜单项 CcmenuItem* itemFortouch(CCtouch * touch); tCcmenuState m_eState; CcmenuItem *m_pSelectedItem;};
.cpp
static std::vector<unsigned int=""> ccarray_to_std_vector(CCArray* pArray) // 将CCArray转换成Vector{ std::vector<unsigned int=""> ret; CCObject* pObj; CCARRAY_FOREACH(pArray,pObj) { CCInteger* pInteger = (CCInteger*)pObj; ret.push_back((unsigned int)pInteger->getValue()); } return ret;} enum{ kDefaultpadding = 5,}; ////Ccmenu// Ccmenu* Ccmenu::create(){ // 传空参数，创建空菜单 return Ccmenu::create(NulL,NulL);} Ccmenu * Ccmenu::create(CcmenuItem* item,...){ va_List args; va_start(args,item); //处理...形参 Ccmenu *pRet = Ccmenu::createWithItems(item,args); va_end(args); return pRet;} Ccmenu* Ccmenu::createWithArray(CCArray* pArrayOfItems){ Ccmenu *pRet = new Ccmenu(); if (pRet && pRet->initWithArray(pArrayOfItems)) { pRet->autorelease(); // 设置自动释放 } else { CC_SAFE_DELETE(pRet); } return pRet;} Ccmenu* Ccmenu::createWithItems(CcmenuItem* item,va_List args){ CCArray* pArray = NulL; // 将...形参转换成CCArray if( item ) { pArray = CCArray::create(item,NulL); // 创建一个CCArray CcmenuItem *i = va_arg(args,CcmenuItem*); while(i) { pArray->addobject(i); // 添加其他子菜单项 i = va_arg(args,CcmenuItem*); } } return Ccmenu::createWithArray(pArray);} Ccmenu* Ccmenu::createWithItem(CcmenuItem* item){ return Ccmenu::create(item,NulL);} bool Ccmenu::init(){ return initWithArray(NulL);} bool Ccmenu::initWithArray(CCArray* pArrayOfItems){ if (cclayer::init()) { // 设置触摸相关信息 settouchPriority(kCcmenuHandlerPriority); settouchMode(kCCtouchesOneByOne); settouchEnabled(true); // 打开可用状态 m_bEnabled = true; // 菜单置于屏幕中间，并填充满整个屏幕 CCSize s = CCDirector::sharedDirector()->getWinSize(); this->ignoreAnchorPointForposition(true); setAnchorPoint(ccp(0.5f,0.5f)); this->setContentSize(s); setposition(ccp(s.wIDth/2,s.height/2)); // 遍历添加菜单项 if (pArrayOfItems != NulL) { int z=0; CCObject* pObj = NulL; CCARRAY_FOREACH(pArrayOfItems,pObj) { CcmenuItem* item = (CcmenuItem*)pObj; this->addChild(item,z); z++; } } // 将选中项置为空 m_pSelectedItem = NulL; // 将状态置为没有菜单项被选中 m_eState = kCcmenuStateWaiting; // enable cascade color and opacity on menus setCascadecolorEnabled(true); setCascadeOpacityEnabled(true); return true; } return false;} /** overrIDe add:*/voID Ccmenu::addChild(CCNode * child){ cclayer::addChild(child);} voID Ccmenu::addChild(CCNode * child,int zOrder){ cclayer::addChild(child,zOrder);} voID Ccmenu::addChild(CCNode * child,int tag){ // 确保child为CcmenuItem之内 CCAssert( dynamic_cast<ccmenuitem*>(child) != NulL,Menu only supports MenuItem objects as children); cclayer::addChild(child,zOrder,tag);} voID Ccmenu::onExit(){ if (m_eState == kCcmenuStateTrackingtouch) // 如果有菜单项被选中，则取消选择状态 { if (m_pSelectedItem) { // 将选中项菜单选中状态清除，并将用于记录的变量置为空 m_pSelectedItem->unselected(); m_pSelectedItem = NulL; } // 将状态置为等待触摸 m_eState = kCcmenuStateWaiting; } cclayer::onExit();} voID Ccmenu::removeChild(CCNode* child,bool cleanup){ CcmenuItem *pMenuItem = dynamic_cast<ccmenuitem*>(child); CCAssert(pMenuItem != NulL,Menu only supports MenuItem objects as children); // 如果是被选中的菜单项，则先把选中置为空 if (m_pSelectedItem == pMenuItem) { m_pSelectedItem = NulL; } CCNode::removeChild(child,cleanup);} //Menu - Events voID Ccmenu::setHandlerPriority(int newPriority){ CCtouchdispatcher* pdispatcher = CCDirector::sharedDirector()->gettouchdispatcher(); pdispatcher->setPriority(newPriority,this); // 设置触摸优先级} voID Ccmenu::registerWithtouchdispatcher(){ // 注册触摸 CCDirector* pDirector = CCDirector::sharedDirector(); pDirector->gettouchdispatcher()->addTargetedDelegate(this,this->gettouchPriority(),true);} bool Ccmenu::cctouchBegan(CCtouch* touch,CCEvent* event){ CC_UNUSED_ParaM(event); if (m_eState != kCcmenuStateWaiting || ! m_bVisible || !m_bEnabled) { // 排除不执行触摸事件状态 return false; } for (CCNode *c = this->m_pParent; c != NulL; c = c->getParent()) { // 如果菜单父类不可见则返回 if (c->isVisible() == false) { return false; } }<span > </span>// 选出触摸项 m_pSelectedItem = this->itemFortouch(touch); if (m_pSelectedItem) { m_eState = kCcmenuStateTrackingtouch; // 将状态变为有菜单项被选中 m_pSelectedItem->selected(); // 对触摸项执行触摸事件 return true; } return false;} voID Ccmenu::cctouchended(CCtouch *touch,CCEvent* event){ CC_UNUSED_ParaM(touch); // 消除不使用警告 CC_UNUSED_ParaM(event); CCAssert(m_eState == kCcmenuStateTrackingtouch,[Menu cctouchended] -- invalID state); if (m_pSelectedItem) { // 解除菜单项选中状态 m_pSelectedItem->unselected(); m_pSelectedItem->activate(); } m_eState = kCcmenuStateWaiting;} voID Ccmenu::cctouchCancelled(CCtouch *touch,CCEvent* event){ CC_UNUSED_ParaM(touch); CC_UNUSED_ParaM(event); CCAssert(m_eState == kCcmenuStateTrackingtouch,[Menu cctouchCancelled] -- invalID state); if (m_pSelectedItem) { // 解除菜单项选中状态 m_pSelectedItem->unselected(); } m_eState = kCcmenuStateWaiting;} voID Ccmenu::cctouchmoved(CCtouch* touch,CCEvent* event){ CC_UNUSED_ParaM(event); CCAssert(m_eState == kCcmenuStateTrackingtouch,[Menu cctouchmoved] -- invalID state); CcmenuItem *currentItem = this->itemFortouch(touch); // 获取当前触摸的子菜单项 if (currentItem != m_pSelectedItem) { if (m_pSelectedItem) // 如果当前有选中项，先取消选中 { m_pSelectedItem->unselected(); } m_pSelectedItem = currentItem; // 重新设置选中项 if (m_pSelectedItem) { m_pSelectedItem->selected(); } }} //Menu - Alignment// 垂直方向默认间隙排列voID Ccmenu::alignItemsvertically(){ this->alignItemsverticallyWithpadding(kDefaultpadding);} // 垂直方向指定间隙排列voID Ccmenu::alignItemsverticallyWithpadding(float padding){ float height = -padding; // 第一个子菜单没有间隔，用于去掉这个重复 if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode*>(pObject); if (pChild) { height += pChild->getContentSize().height * pChild->getScaleY() + padding; // 获取子菜单项和间隔的总高度 } } } float y = height / 2.0f; // 因为定位点在中间，所以先除去2 if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode*>(pObject); if (pChild) { pChild->setposition(ccp(0,y - pChild->getContentSize().height * pChild->getScaleY() / 2.0f)); // 锚点在中间，所以除2 y -= pChild->getContentSize().height * pChild->getScaleY() + padding; // 减去一个子菜单项和间隔的高度 } } }} // 水平方向默认间隙排列voID Ccmenu::alignItemsHorizontally(voID){ this->alignItemsHorizontallyWithpadding(kDefaultpadding);} // 水平方向指定间隙排列voID Ccmenu::alignItemsHorizontallyWithpadding(float padding) // 原理和垂直排列相似，只不过将x变成y{ float wIDth = -padding; if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode*>(pObject); if (pChild) { wIDth += pChild->getContentSize().wIDth * pChild->getScaleX() + padding; } } } float x = -wIDth / 2.0f; if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode*>(pObject); if (pChild) { pChild->setposition(ccp(x + pChild->getContentSize().wIDth * pChild->getScaleX() / 2.0f,0)); x += pChild->getContentSize().wIDth * pChild->getScaleX() + padding; } } }} voID Ccmenu::alignItemsInColumns(unsigned int columns,...){ // 将...转换成va_List va_List args; va_start(args,columns); this->alignItemsInColumns(columns,args); va_end(args);} voID Ccmenu::alignItemsInColumns(unsigned int columns,va_List args){ // 将va_List转换成CCArray CCArray* rows = CCArray::create(); while (columns) { rows->addobject(CCInteger::create(columns)); columns = va_arg(args,unsigned int); } alignItemsInColumnsWithArray(rows);} voID Ccmenu::alignItemsInColumnsWithArray(CCArray* rowsArray){ vector<unsigned int=""> rows = ccarray_to_std_vector(rowsArray); // 将CCArray转换成vector int height = -5; // 为-5是用于除去第一行的间隙 unsigned int row = 0; // 索引，当前行序号 unsigned int rowHeight = 0; // 放置每一行高度（即每行最大高度） unsigned int columnsOccupIEd = 0; // 已放置列数 unsigned int rowColumns; // 放置该行有多少列 if (m_pChildren && m_pChildren->count() > 0) // 子菜单项数组存在且个数不为0 { CCObject* pObject = NulL; // 临时变量 CCARRAY_FOREACH(m_pChildren,pObject) // 遍历子菜单项数组 { CCNode* pChild = dynamic_cast<ccnode*>(pObject); // 将CCObject对象强制转换成CCNode对象 if (pChild) // 如果强制转换成功 { CCAssert(row < rows.size(),); rowColumns = rows[row]; // 获取该行列数 CCAssert(rowColumns,); float tmp = pChild->getContentSize().height; // 获取当前子菜单高度 rowHeight = (unsigned int)((rowHeight >= tmp || isnan(tmp)) ? rowHeight : tmp); // 如果行高大于当前子菜单项高度，或者当前子菜单项高度越界，rowHeight不变，否则rowHeight等于当前子菜单项高度（用来存放最大菜单项高度） ++columnsOccupIEd; // 已放置列数自加 if (columnsOccupIEd >= rowColumns) // 如果已放置列数大于等于该行可容纳列数 { height += rowHeight + 5; // 高度加上当前高度加上间隙 columnsOccupIEd = 0; // 重置已放置列数 rowHeight = 0; // 重置每行行高的临时变量 ++row; // 跳转至下一行 } } } } // check if too many rows/columns for available menu items CCAssert(! columnsOccupIEd,); CCSize winSize = CCDirector::sharedDirector()->getWinSize(); // 获取屏幕大小 row = 0; rowHeight = 0; rowColumns = 0; float w = 0.0; float x = 0.0; float y = (float)(height / 2); if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode>(pObject); if (pChild) { if (rowColumns == 0) // 如果需要放置数量为0才重新读取数据 { rowColumns = rows[row]; // 获取需要放置的数量 w = winSize.wIDth / (1 + rowColumns); //占屏幕宽度大小平分 x = w; } float tmp = pChild->getContentSize().height; rowHeight = (unsigned int)((rowHeight >= tmp || isnan(tmp)) ? rowHeight : tmp); // 获取当前行高度最大高度 pChild->setposition(ccp(x - winSize.wIDth / 2,y - pChild->getContentSize().height / 2)); // 重新放置位置 x += w; ++columnsOccupIEd; if (columnsOccupIEd >= rowColumns) // 如果已放置列数大于等于需要放置的列数 { y -= rowHeight + 5; // 减去一个子菜单项和间隔的高度 columnsOccupIEd = 0; rowColumns = 0; rowHeight = 0; ++row; } } } } } //alignItemsInRows系列方法参照alignItemsInColumnsvoID Ccmenu::alignItemsInRows(unsigned int rows,rows); this->alignItemsInRows(rows,args); va_end(args);} voID Ccmenu::alignItemsInRows(unsigned int rows,va_List args){ CCArray* pArray = CCArray::create(); while (rows) { pArray->addobject(CCInteger::create(rows)); rows = va_arg(args,unsigned int); } alignItemsInRowsWithArray(pArray);} voID Ccmenu::alignItemsInRowsWithArray(CCArray* columnArray){ vector<unsigned int=""> columns = ccarray_to_std_vector(columnArray); vector<unsigned int=""> columnWIDths; vector<unsigned int=""> columnHeights; int wIDth = -10; int columnHeight = -5; unsigned int column = 0; unsigned int columnWIDth = 0; unsigned int rowsOccupIEd = 0; unsigned int columnRows; if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode>(pObject); if (pChild) { // check if too many menu items for the amount of rows/columns CCAssert(column < columns.size(),); columnRows = columns[column]; // can't have zero rows on a column CCAssert(columnRows,); // columnWIDth = fmaxf(columnWIDth,[item contentSize].wIDth); float tmp = pChild->getContentSize().wIDth; columnWIDth = (unsigned int)((columnWIDth >= tmp || isnan(tmp)) ? columnWIDth : tmp); columnHeight += (int)(pChild->getContentSize().height + 5); ++rowsOccupIEd; if (rowsOccupIEd >= columnRows) { columnWIDths.push_back(columnWIDth); columnHeights.push_back(columnHeight); wIDth += columnWIDth + 10; rowsOccupIEd = 0; columnWIDth = 0; columnHeight = -5; ++column; } } } } // check if too many rows/columns for available menu items. CCAssert(! rowsOccupIEd,); CCSize winSize = CCDirector::sharedDirector()->getWinSize(); column = 0; columnWIDth = 0; columnRows = 0; float x = (float)(-wIDth / 2); float y = 0.0; if (m_pChildren && m_pChildren->count() > 0) { CCObject* pObject = NulL; CCARRAY_FOREACH(m_pChildren,pObject) { CCNode* pChild = dynamic_cast<ccnode>(pObject); if (pChild) { if (columnRows == 0) { columnRows = columns[column]; y = (float) columnHeights[column]; } // columnWIDth = fmaxf(columnWIDth,[item contentSize].wIDth); float tmp = pChild->getContentSize().wIDth; columnWIDth = (unsigned int)((columnWIDth >= tmp || isnan(tmp)) ? columnWIDth : tmp); pChild->setposition(ccp(x + columnWIDths[column] / 2,y - winSize.height / 2)); y -= pChild->getContentSize().height + 10; ++rowsOccupIEd; if (rowsOccupIEd >= columnRows) { x += columnWIDth + 5; rowsOccupIEd = 0; columnRows = 0; columnWIDth = 0; ++column; } } } }} CcmenuItem* Ccmenu::itemFortouch(CCtouch *touch){ CCPoint touchLocation = touch->getLocation(); // 获取当前触摸点 if (m_pChildren && m_pChildren->count() > 0) // 判断子节点（子菜单项）是否存在，且个数不为0 { CCObject* pObject = NulL; // 临时变量 CCARRAY_FOREACH(m_pChildren,pObject) // 遍历子菜单项数组 { CcmenuItem* pChild = dynamic_cast<ccmenuitem>(pObject); // 强制转换，获取当前子菜单项 if (pChild && pChild->isVisible() && pChild->isEnabled()) // 如果当前子菜单项不为空、且可见、且可用 { CCPoint local = pChild->convertToNodeSpace(touchLocation); // 把世界坐标转换到当前节点的本地坐标系中 CCRect r = pChild->rect(); // 获取子菜单项范围 r.origin = CCPointZero; if (r.containsPoint(local)) // 判断子菜单项范围中是否包括触摸点 { return pChild; // 返回该子菜单项 } } } } return NulL; // 返回空}
看懂了。就是知识
总结以上是内存溢出为你收集整理的cocos2d-x CCMenu详细源码分析全部内容，希望文章能够帮你解决cocos2d-x CCMenu详细源码分析所遇到的程序开发问题。
如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。
欢迎分享，转载请注明来源：内存溢出
微信扫一扫
支付宝扫一扫
评论列表（0条）