【Cocosd2d-x CCMenu菜单之二】

菜单项CCMenuItem是一个基类， 子类CCMenuItemFont、CCMenuItemLabel、CCMenuItemSprite、CCMenuItemToggle可加入CCMenu中形成菜单。

程序代码：

bool HelloWorld::init()
{

    if ( !CCLayer::init() )
    {
        return false;
    }

    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();

    CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
                                        "CloseNormal.png",
                                        "CloseSelected.png",
                                        this,
                                        menu_selector(HelloWorld::menuCloseCallback));

	pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,
                                origin.y + pCloseItem->getContentSize().height/2));

    // create menu, it‘s an autorelease object
    CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
    pMenu->setPosition(CCPointZero);
    this->addChild(pMenu, 1);

	//add your code...
	//使用字体定义菜单项，包括 CCMenuItemAtlasFont, CCMenuItemFont 两种方式，CCMenuItemFont通过设置字体名称来设置字体。
	CCMenuItemFont::setFontSize(30); //字号
	CCMenuItemFont::setFontName("Courier New");//字体
	CCMenuItemFont *item = CCMenuItemFont::create("--- Go Back ---", this, menu_selector(HelloWorld::menuItemFontcall));//参数1：文字内容，参数2：执行回调函数的目标类，参数3：按下触发的回调函数
	//item->setPosition(ccp(visibleSize.width/2,100));  

	//通过字体配置PNG文件的 CCLabelAtlas
	CCLabelAtlas *atlasfont =  CCLabelAtlas::create("0123456789", "labelatlas.png", 16, 24, ‘.‘);//参数顺序：文字内容，图片，单个文字宽，单个文字高，默认显示字符
	CCMenuItemLabel *item1 = CCMenuItemLabel::create(atlasfont, this, menu_selector(HelloWorld::menuItemFontcall2));//参数顺序：文字渲染类，执行回调函数的目标类，按下触发的回调函数
	//item1->setPosition(ccp(visibleSize.width/2,400));  

	//精灵菜单项
	CCSprite *spriteNormal   = CCSprite::create("menuitemsprite.png",  CCRectMake(0,23*2,115,23));
	CCSprite *spriteSelected = CCSprite::create("menuitemsprite.png",  CCRectMake(0,23*1,115,23));
	CCSprite *spriteDisabled = CCSprite::create("menuitemsprite.png",  CCRectMake(0,23*0,115,23));  

	CCMenuItemSprite* item3 = CCMenuItemSprite::create(spriteNormal, spriteSelected, spriteDisabled, this, menu_selector(HelloWorld::menuCallback3));//参数：3种菜单状态及回调函数
	//item3->setPosition(ccp(visibleSize.width/2,300));  

	//通过字体配置FNT类型文件的CCLabelBMFont
	CCLabelBMFont* label = CCLabelBMFont::create("Enable AtlasItem", "bitmapFontTest3.fnt");
	CCMenuItemLabel* item4 = CCMenuItemLabel::create(label, this, menu_selector(HelloWorld::menuCallback4) );
	//item4->setPosition(ccp(visibleSize.width/2+50,250));  

	//触发器菜单项,可以将任何菜单项传递进去
	CCMenuItemToggle *toggle = CCMenuItemToggle::createWithTarget(  this,
		menu_selector(HelloWorld::menuCallback5),
		CCMenuItemFont::create("On"),
		CCMenuItemFont::create("Off"),
		NULL);
	//toggle->setPosition(ccp(visibleSize.width/2+100, 150));  

	CCMenu *menu = CCMenu::create(item, item1, item3, item4, toggle, NULL);
	menu->alignItemsVertically();

	CCSize s = CCDirector::sharedDirector()->getWinSize();

	int i=0;
	CCNode* child;
	CCArray * pArray = menu->getChildren(); //获取menu所有节点(菜单项)
	CCObject* pObject = NULL;
	CCARRAY_FOREACH(pArray, pObject)
	{
		if(pObject == NULL)
			break;

		child = (CCNode*)pObject;

		CCPoint dstPoint = child->getPosition();//获取每个节点位置
		int offset = (int) (s.width/2 + 50);
		if( i % 2 == 0)
			offset = -offset;

		child->setPosition( ccp( dstPoint.x + offset, dstPoint.y) );//设置菜单项初始位置
		child->runAction(
			CCEaseElasticOut::create(CCMoveBy::create(2, ccp(dstPoint.x - offset,0)), 0.35f) //从初始位置移动新的位置，有振幅效果
			);
		i++;
	}

	menu->setPosition(ccp(s.width/2, s.height/2));
	this->addChild(menu);

	return true; 

}

void HelloWorld::menuItemFontcall(CCObject* pSender)
{
	CCLOG("menuItemFontcall...");
}

void HelloWorld::menuItemFontcall2(CCObject* pSender)
{
	CCLOG("menuItemFontcall2...");
}
void HelloWorld::menuCallback3(CCObject* pSender)
{
	CCLOG("menuCallback3...");
}
void HelloWorld::menuCallback4(CCObject* pSender)
{
	CCLOG("menuCallback4...");
}
void HelloWorld::menuCallback5(CCObject* pSender)
{
	CCLOG("menuCallback5...");
}

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