CCScroview用法

来源：互联网发布：淘宝上买鞋子是正品吗编辑：程序博客网时间：2024/05/22 12:46

代码如下：

#ifndef GALLERY_LAYER_H#define GALLERY_LAYER_H#include "cocos2d.h"#include "SimpleAudioEngine.h"#include "cocos-ext.h"USING_NS_CC;USING_NS_CC_EXT;class GalleryLayer : public cocos2d::CCLayer ,public CCScrollViewDelegate{public:    static CCScene* scene();    virtual bool init();        void menuCloseCallback(CCObject* pSender);    void menuLeftCallback(CCObject* pSender);    void menuRightCallback(CCObject* pSender);        CREATE_FUNC(GalleryLayer);    public:    //scrollview滚动的时候会调用    void scrollViewDidScroll(CCScrollView* view);    //scrollview缩放的时候会调用    void scrollViewDidZoom(CCScrollView* view);        virtual void onEnter();    virtual void onExit();        virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);    virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);    virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);    virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);    private:    //根据手势滑动的距离和方向滚动图层    void adjustScrollView(float offset);    CCScrollView *m_pScrollView;    CCPoint m_touchPoint;    int m_nCurPage;};#endif

#include "GalleryLayer.h"#define PICNUM 5CCScene* GalleryLayer::scene(){    CCScene* scene = CCScene::create();    CCLayer* layer = GalleryLayer::create();    scene->addChild(layer);    return scene;}bool GalleryLayer::init(){    bool bRet = false;    do    {        CC_BREAK_IF( !CCLayer::init() );                m_nCurPage = 1;        CCSize winSize = CCDirector::sharedDirector()->getWinSize();        CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();        CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();                CCMenuItemImage *pCloseItem = CCMenuItemImage::create("CloseNormal.png","CloseSelected.png",                    this,menu_selector(GalleryLayer::menuCloseCallback));                pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,                                    origin.y + pCloseItem->getContentSize().height/2));                CCMenuItemImage *leftItem = CCMenuItemImage::create("CloseNormal.png","CloseSelected.png",                    this,menu_selector(GalleryLayer::menuLeftCallback));                leftItem->setPosition(ccp(leftItem->getContentSize().width , winSize.height/2));                CCMenuItemImage *rightItem = CCMenuItemImage::create("CloseNormal.png","CloseSelected.png",                                                            this,menu_selector(GalleryLayer::menuRightCallback));                rightItem->setPosition(ccp(winSize.width-rightItem->getContentSize().width , winSize.height/2));        // create menu, it's an autorelease object        CCMenu* pMenu = CCMenu::create(pCloseItem, leftItem, rightItem, NULL);        pMenu->setPosition(CCPointZero);        this->addChild(pMenu, 1);                CCLayer *pLayer = CCLayer::create();        char helpstr[30] = {0};        for (int i = 1; i <= PICNUM; ++ i)        {            memset(helpstr, 0, sizeof(helpstr));            sprintf(helpstr,"%d.png",i);            CCSprite *pSprite = CCSprite::create(helpstr);            pSprite->setPosition(ccp(visibleSize.width * (i-0.5f), visibleSize.height / 2));            pLayer->addChild(pSprite);        }                m_pScrollView = CCScrollView::create(CCSizeMake(960, 640), pLayer);        m_pScrollView->setContentOffset(CCPointZero);        m_pScrollView->setTouchEnabled(false);        m_pScrollView->setDelegate(this);        m_pScrollView->setDirection(kCCScrollViewDirectionHorizontal);        pLayer->setContentSize(CCSizeMake(960*3, 640));                this->addChild(m_pScrollView);                CCSpriteFrameCache *pCache =  CCSpriteFrameCache::sharedSpriteFrameCache();                pCache->addSpriteFrame(CCSpriteFrame::create("button_normal.png",CCRectMake(0, 0, 64, 64)),"button_normal.png");        pCache->addSpriteFrame(CCSpriteFrame::create("button_selected.png",CCRectMake(0, 0, 64, 64)),"button_selected.png");        for (int i = 1; i <= PICNUM; ++ i)        {            CCSprite *pPoint = CCSprite::createWithSpriteFrameName("button_normal.png");            pPoint->setTag(i);            pPoint->setPosition(ccp( origin.x + (visibleSize.width - 3 * pPoint->getContentSize().width)/2 + pPoint->getContentSize().width * (i-1), origin.y + 30));            this->addChild(pPoint);        }        CCSprite *pPoint = (CCSprite *)this->getChildByTag(1);        pPoint->setDisplayFrame(pCache->spriteFrameByName("button_selected.png"));                bRet = true;    }while(0);        return bRet;    }void GalleryLayer::menuLeftCallback(CCObject* pSender){    adjustScrollView(90);}void GalleryLayer::menuRightCallback(CCObject* pSender){    adjustScrollView(-90);}void GalleryLayer::menuCloseCallback(CCObject* pSender){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)    CCMessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");#else    CCDirector::sharedDirector()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)    exit(0);#endif#endif}void GalleryLayer::scrollViewDidScroll(cocos2d::extension::CCScrollView *view){    CCLOG("scroll");}void GalleryLayer::scrollViewDidZoom(cocos2d::extension::CCScrollView *view){    CCLOG("zoom");}void GalleryLayer::onEnter(){    CCLayer::onEnter();    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 1, false);}void GalleryLayer::onExit(){    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);    CCLayer::onExit();    CCSpriteFrameCache::sharedSpriteFrameCache()->removeUnusedSpriteFrames();}bool GalleryLayer::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent){    m_touchPoint = CCDirector::sharedDirector()->convertToGL(pTouch->getLocationInView());    return true;}void GalleryLayer::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){    }void GalleryLayer::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){    CCPoint endPoint = CCDirector::sharedDirector()->convertToGL(pTouch->getLocationInView());    float distance = endPoint.x - m_touchPoint.x;    if(fabs(distance) > 50)    {        adjustScrollView(distance);    }}void GalleryLayer::ccTouchCancelled(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent){    CCPoint endPoint = CCDirector::sharedDirector()->convertToGL(pTouch->getLocationInView());    float distance = endPoint.x - m_touchPoint.x;    if(fabs(distance) > 100)    {        adjustScrollView(distance);    }}void GalleryLayer::adjustScrollView(float offset){    CCLOG("=offset=%.3f",offset);    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();    CCSpriteFrameCache *pCache =  CCSpriteFrameCache::sharedSpriteFrameCache();        CCSprite *pPoint = (CCSprite *)this->getChildByTag(m_nCurPage);    pPoint->setDisplayFrame(pCache->spriteFrameByName("button_normal.png"));    if (offset<0)    {        m_nCurPage ++;    }else    {        m_nCurPage --;    }        if (m_nCurPage < 1)    {        m_nCurPage = 1;    }        if(m_nCurPage > 5)    {        m_nCurPage = 5;    }    CCLOG("=m_nCurPage=%d",m_nCurPage);    pPoint = (CCSprite *)this->getChildByTag(m_nCurPage);    pPoint->setDisplayFrame(pCache->spriteFrameByName("button_selected.png"));    CCPoint adjustPos = ccp(origin.x - visibleSize.width * (m_nCurPage-1), 0);    m_pScrollView->setContentOffset(adjustPos, true);}

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