cocos2d-x菜单项

cocos2d-x提供了多种菜单项，分别为:CCMenuItemLable、CCMenuItemSprite、CCMenuItemToggle、CCMenuItemAtlasFont、CCMenuItemFont及CCMenuItemImage他们都继承CCMenuItem，继承图如下:

 

CCMenuItemLable:

   主要包括CCMenuItemFont和CCMenuItemAtlasFont。

CCMenuItemFont:

CCMenuItemFont::setFontName( "Marker Felt" );         CCMenuItemFont::setFontSize(34);CCMenuItemFont *pCloseItemFont = CCMenuItemFont::create("CloseFont",this,menu_selector(HelloWorld::menuCloseCallback));pCloseItemFont->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width-100,20));

"CloseFont"是菜单显示的文本

menu_selector(HelloWorld::menuCloseCallback)是一个回调函数,点击菜单后会调用menuCloseCallback()函数

setFontName 设定显示文本的字体

setFontSize 设定显示文本的字体大小

 

CCMenuItemAtlasFont:

CCLabelAtlas *pLabelAtlas = CCLabelAtlas::create("0123456789","labelatlas.png",16,24,'.'); //上一篇的文本中已经讲过了  CCMenuItemLabel *pAtlasFont = CCMenuItemLabel::create(pLabelAtlas,  this,menu_selector(HelloWorld::menuCloseCallback));  pAtlasFont->setPosition(      ccp(CCDirector::sharedDirector()->getWinSize().width/2,200));  pAtlasFont->setDisabledColor( ccc3(32,32,64) );  //禁用时的颜色  pAtlasFont->setColor( ccc3(200,200,255) ); //显示颜色 

CCMenuItemAtlasFont则是通过png文件生成菜单项，即配置文件所对应的图片

 

还可以使用CCLabelBMFont：

CCLabelBMFont *pLabelBMFont = CCLabelBMFont::create("HelloWorld","dmTest.fnt");          CCMenuItemLabel *pBMFont = CCMenuItemLabel::create(pLabelBMFont,              this,menu_selector(HelloWorld::menuCloseCallback));          pBMFont->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width/2,160));          pBMFont->setScale(0.8f); 

因为不能设定字体的大小，所以用setScale函数进行缩放

 

CCMenuItemSprite:

图片菜单:包括CCMenuItemImage,可以封装图片进入菜单项:

         CCSprite *pSt1 = CCSprite::create("Normal.png");  //CCSprite为精灵类  CC_BREAK_IF(!pSt1);  CCSprite *pSt2 = CCSprite::create("Selected.png");  CC_BREAK_IF(!pSt2);  CCSprite *pSt3 = CCSprite::create("Disabled.png");  CC_BREAK_IF(!pSt3)  CCMenuItemSprite *pSprites = CCMenuItemSprite::create(pSt1,pSt2,   pSt3,this,menu_selector(HelloWorld::menuCloseCallback));  pSprites->setPosition(  ccp(CCDirector::sharedDirector()->getWinSize().width-20,60));   

CCMenuItemImage:

CCMenuItemImage *pCloseItem = CCMenuItemImage::create(       "CloseNormal.png",       "CloseSelected.png",       this,       menu_selector(HelloWorld::menuCloseCallback));   CC_BREAK_IF(! pCloseItem);   pCloseItem->setPosition(  CCDirector::sharedDirector()->getWinSize().width - 20, 20));  

CCMenuItemToggle:

可以将任意的CCMenuItem封装进去，作为一个开关式的按钮,它的参数是可变的，也就是说可以一下子封装多个

//CCMenuItemToggle          CCMenuItemToggle *pToggle = CCMenuItemToggle::createWithTarget(this,              menu_selector(HelloWorld::menuCloseCallback),              CCMenuItemImage::create("testToggle.png","testToggle2.png"),              CCMenuItemImage::create(              "testToggle2.png","testToggle.png"),NULL);           pToggle->setPosition(              ccp(CCDirector::sharedDirector()->getWinSize().width-350,20));  

最后要创建个菜单将所有菜单项添加进去

// Create a menu with the "close" menu item, it's an auto release object.          CCMenu* pMenu = CCMenu::create(pCloseItem,pCloseItemFont,pCloseItemLabel,              pToggle,pSprites,pAtlasFont, NULL);          pMenu->setPosition(CCPointZero);          CC_BREAK_IF(! pMenu);  // Add the menu to HelloWorld layer as a child layer.          this->addChild(pMenu, 1);  

void HelloWorld::menuCloseCallback(CCObject* pSender) //菜单项回调函数      {          // "close" menu item clicked           CCDirector::sharedDirector()->end();      }  

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