cocos2d-x 弹窗
PopupLayer.h
#include "cocos2d.h" #include "cocos-ext.h" USING_NS_CC; USING_NS_CC_EXT; class PopupLayer : public CCLayer{ public: PopupLayer(); ~PopupLayer(); virtual bool init(); //需要重写触摸注册函数，重新给定触摸级别 virtual void registerWithTouchDispatcher(); //重写触摸函数，返回true，屏蔽其它层，达到“模态”效果 bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent); //静态创建函数，创建一个弹出层，设置背景图片 static PopupLayer* create(const char* backgroundImage); //设置标题 void setTitle(const char* title, int fontsize = 20); //设置文本内容，padding 为文字到对话框两边预留的距离，这是可控的，距上方的距离亦是如此 void setContentText(const char* text, int fontsize=20, int padding=50, int paddingTop=100); //设置上层对象和上层回调函数，用于回调时传递CCNode参数 void setCallBackFunc(CCObject* target, SEL_CallFuncN callfun); //添加menuItem按钮，封装了一个函数，传入些必要的参数 bool addButton(const char* normalImage, const char* selectedImage, const char* title, int tag=0); //为了在显示层时的属性生效，选择在onEnter里动态生成 virtual void onEnter(); virtual void onExit(); CREATE_FUNC(PopupLayer); private: void buttonCallBack(CCObject* pSender); //文字内容两边的空白区域 int m_contentPadding; int m_contentPaddingTop; CCObject* m_callbackListener; SEL_CallFuncN m_callback; //定义了CCMenu*类型变量m_pMenu, 并且直接定义默认的set/get方法 CC_SYNTHESIZE_RETAIN(CCMenu*, m_pMenu, MenuButton); CC_SYNTHESIZE_RETAIN(CCSprite*, m_sfBackGround, SpriteBackGround); CC_SYNTHESIZE_RETAIN(CCScale9Sprite*, m_s9BackGround, Sprite9BackGround); CC_SYNTHESIZE_RETAIN(CCLabelTTF*, m_ltTitle, LabelTitle); CC_SYNTHESIZE_RETAIN(CCLabelTTF*, m_ltContentText, LabelContentText); };
PopupLayer.cpp
#include "PopupLayer.h" USING_NS_CC; // 构造函数中变量设初值 PopupLayer::PopupLayer() { m_contentPadding = 0; m_contentPaddingTop = 0; m_pMenu = NULL; m_callbackListener = NULL; m_callback = NULL; m_sfBackGround = NULL; m_s9BackGround = NULL; m_ltContentText = NULL; m_ltTitle = NULL; } //释放 PopupLayer::~PopupLayer() { CC_SAFE_RELEASE(m_pMenu); CC_SAFE_RELEASE(m_sfBackGround); CC_SAFE_RELEASE(m_s9BackGround); CC_SAFE_RELEASE(m_ltContentText); CC_SAFE_RELEASE(m_ltTitle); } //初始化 bool PopupLayer::init() { if ( !CCLayer::init() ) { return false; } this->setContentSize(CCSizeZero); //初始化需要的Menu CCMenu* menu = CCMenu::create(); menu->setPosition(CCPointZero); setMenuButton(menu); //set()方法 setTouchEnabled(true); //开启触摸响应 return true; } //重写触摸注册函数，重新给定触摸级别 void PopupLayer::registerWithTouchDispatcher() { // 这里的触摸优先级设置为-128，与CCMenu同级，保证了屏蔽下方的触摸 CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, -128, true); } //触摸函数ccTouchBegan，返回true bool PopupLayer::ccTouchBegan( CCTouch *pTouch, CCEvent *pEvent ) { return true; } //创建一个弹出层，给背景精灵变量赋值 PopupLayer* PopupLayer::create( const char* backgroundImage ){ PopupLayer* popup = PopupLayer::create(); popup->setSpriteBackGround(CCSprite::create(backgroundImage)); popup->setSprite9BackGround(CCScale9Sprite::create(backgroundImage)); return popup; } //给标题变量赋值 void PopupLayer::setTitle( const char* title, int fontsize ){ CCLabelTTF* ltfTitle = CCLabelTTF::create(title, "Arial", fontsize); ltfTitle->setColor(ccc3(0, 0, 0)); setLabelTitle(ltfTitle); } //给文本变量赋值 void PopupLayer::setContentText( const char* text, int fontsize, int padding, int paddingTop ){ CCLabelTTF* content = CCLabelTTF::create(text, "Arial", fontsize); content->setColor(ccc3(0, 0, 0)); setLabelContentText(content); m_contentPadding = padding; m_contentPaddingTop = paddingTop; } //给下层层变量和回调函数变量赋值 void PopupLayer::setCallBackFunc( CCObject* target, SEL_CallFuncN callfun ){ m_callbackListener = target; m_callback = callfun; } //给menu菜单变量添加Item bool PopupLayer::addButton( const char* normalImage, const char* selectedImage, const char* title, int tag ){ CCSize winSize = CCDirector::sharedDirector()->getWinSize(); CCPoint center = ccp(winSize.width/2, winSize.height/2); // 创建图片菜单按钮 CCMenuItemImage* menuImage = CCMenuItemImage::create( normalImage, selectedImage, this, menu_selector(PopupLayer::buttonCallBack)); menuImage->setTag(tag); menuImage->setPosition(center); // 添加文字说明并设置位置 CCSize menuSize = menuImage->getContentSize(); CCLabelTTF* ttf = CCLabelTTF::create(title, "Arial", 15); ttf->setColor(ccc3(0, 0, 0)); ttf->setPosition(ccp(menuSize.width/2, menuSize.height/2)); menuImage->addChild(ttf); getMenuButton()->addChild(menuImage); return true; } //销毁弹出框，传递参数node给下层 void PopupLayer::buttonCallBack( CCObject* pSender ){ CCNode* node = (CCNode *)pSender; CCLog("touch tag: %d", node->getTag()); if (m_callback && m_callbackListener) { //执行HelloWorld层的回调函数，传递node参数 (m_callbackListener->*m_callback)(node); } this->removeFromParentAndCleanup(true); } //全部参数都设定好后，在运行时动态加载 void PopupLayer::onEnter(){ CCLayer::onEnter(); CCSize winSize = CCDirector::sharedDirector()->getWinSize(); CCPoint center = ccp(winSize.width/2, winSize.height/2); CCSize contentSize; // 设定好参数，在运行时加载 if (getContentSize().equals(CCSizeZero)){ getSpriteBackGround()->setPosition(center); this->addChild(getSpriteBackGround(),0,0); contentSize = getSpriteBackGround()->getTexture()->getContentSize(); } else{ CCScale9Sprite* background = getSprite9BackGround(); background->setContentSize(getContentSize()); background->setPosition(center); this->addChild(background, 0); contentSize = getContentSize(); } //添加按钮，并根据Item的个数设置其位置 this->addChild(getMenuButton()); float btnWidth = contentSize.width / (getMenuButton()->getChildrenCount()+1); CCArray* array = getMenuButton()->getChildren(); CCObject* pObj = NULL; int i = 0; CCARRAY_FOREACH(array, pObj){ CCNode* node = (CCNode *)pObj; node->setPosition(ccp(winSize.width/2 - contentSize.width/2 + btnWidth*(i+1), winSize.height/2 - contentSize.height/3)); i++; } // 显示对话框标题 if (getLabelTitle()){ getLabelTitle()->setPosition(ccpAdd(center, ccp(0, contentSize.height/2 - 25.0f))); this->addChild(getLabelTitle()); } //显示文本内容 if (getLabelContentText()){ CCLabelTTF* ltf = getLabelContentText(); ltf->setPosition(center); ltf->setDimensions(CCSizeMake(contentSize.width - m_contentPadding*2, contentSize.height - m_contentPaddingTop)); ltf->setHorizontalAlignment(kCCTextAlignmentLeft); this->addChild(ltf); } //弹出效果 CCSequence *popupActions = CCSequence::create( CCScaleTo::create(0.0, 0.0), CCScaleTo::create(0.06, 1.05), CCScaleTo::create(0.08, 0.95), CCScaleTo::create(0.08, 1.0), NULL); this->runAction(popupActions); } //退出 void PopupLayer::onExit(){ CCLayer::onExit(); }
HelloWorldScene.h
#ifndef __HELLOWORLD_SCENE_H__ #define __HELLOWORLD_SCENE_H__ #include "cocos2d.h" class HelloWorld : public cocos2d::CCLayer { public: // Method 'init' in cocos2d-x returns bool, instead of 'id' in cocos2d-iphone (an object pointer) virtual bool init(); // there's no 'id' in cpp, so we recommend to return the class instance pointer static cocos2d::CCScene* scene(); // a selector callback void menuCloseCallback(CCObject* pSender); // preprocessor macro for "static create()" constructor ( node() deprecated ) CREATE_FUNC(HelloWorld); void menuCallback(cocos2d::CCObject *pSender); void popupLayer(); void buttonCallback(cocos2d::CCNode *pNode); }; #endif // __HELLOWORLD_SCENE_H__
HelloWorldScene.cpp
#include "HelloWorldScene.h" #include "SimpleAudioEngine.h" #include "PopupLayer.h" using namespace cocos2d; using namespace CocosDenshion; CCScene* HelloWorld::scene() { // 'scene' is an autorelease object CCScene *scene = CCScene::create(); // 'layer' is an autorelease object HelloWorld *layer = HelloWorld::create(); // add layer as a child to scene scene->addChild(layer); // return the scene return scene; } // on "init" you need to initialize your instance bool HelloWorld::init() { ////////////////////////////// // 1. super init first if ( !CCLayer::init() ) { return false; } CCSize winSize = CCDirector::sharedDirector()->getWinSize(); CCPoint pointCenter = ccp(winSize.width / 2, winSize.height / 2); // 添加背景图片 CCSprite* background = CCSprite::create("HelloWorld.png"); background->setPosition(pointCenter); background->setScale(1.5f); this->addChild(background); // 添加菜单 CCMenu* menu = CCMenu::create(); CCMenuItemFont* menuItem = CCMenuItemFont::create("popup", this, menu_selector(HelloWorld::menuCallback)); menuItem->setPosition(ccp(winSize.width / 2, winSize.height / 2)); menuItem->setColor(ccc3(0, 0, 0)); menu->addChild(menuItem); menu->setPosition(CCPointZero); this->addChild(menu); return true; } void HelloWorld::menuCallback(cocos2d::CCObject *pSender){ popupLayer(); } void HelloWorld::popupLayer() { // 定义一个弹出层，传入一张背景图片 PopupLayer* popup = PopupLayer::create("HelloWorld.png"); // ContentSize是可选的设置，可以不设置，如果设置则把它当做9图缩放 popup->setContentSize(CCSizeMake(250, 260)); popup->setTitle("Message"); popup->setContentText("Most people... ", 20, 50, 150); // 设置回调函数，回调传回一个CCNode以获取tag判断点击的按钮 // 这只是作为一种封装实现，如果使用delegate那就能够更灵活的控制参数了 popup->setCallBackFunc(this, callfuncN_selector(HelloWorld::buttonCallback)); //添加按钮，设置图片、文字，tag信息 popup->addButton("CloseNormal.png", "CloseSelected.png", "Ok", 0); popup->addButton("CloseNormal.png", "CloseSelected.png", "Cancel", 1); this->addChild(popup); } void HelloWorld::buttonCallback(cocos2d::CCNode *pNode){ CCLog("button call back. tag: %d", pNode->getTag()); } void HelloWorld::menuCloseCallback(CCObject* pSender) { CCDirector::sharedDirector()->end(); #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) exit(0); #endif }
参考图：
转载自
http://blog.sina.com.cn/s/blog_705a5ff00101ox4s.html
http://www.tuicool.com/articles/VzAFJr
