cocos2d-x学习笔记(三)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(ccp(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

//CCMenuItemToggleCCMenuItemToggle *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();}

 

 

刚刚接触COCOS2D-X ，如有错误，请大家指出！！