cocos2dx ScrollView 测试一 触摸事件优先级和自动调整

直接上代码

MyScrollView.h

//
//  MyScrollView.h
//  ScrollViewTest
//
//  Created by HanHongmin on 14-1-1.
//
//

#ifndef __ScrollViewTest__MyScrollView__
#define __ScrollViewTest__MyScrollView__

#include "cocos2d.h"
#include "cocos-ext.h"
using namespace cocos2d;
using namespace cocos2d::extension;

class MyScrollView:public CCScrollView{
public:
    static MyScrollView* create();
    static MyScrollView* create(CCSize size);
    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
    virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);
    virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);
    virtual void adjustScrollView();
};

#endif /* defined(__ScrollViewTest__MyScrollView__) */

MyScrollView.cpp

//
//  MyScrollView.cpp
//  ScrollViewTest
//
//  Created by HanHongmin on 14-1-1.
//
//

#include "MyScrollView.h"


MyScrollView* MyScrollView::create()
{
    MyScrollView* pRet = new MyScrollView();
    if (pRet && pRet->init())
    {
        pRet->autorelease();
    }
    else
    {
        CC_SAFE_DELETE(pRet);
    }
    return pRet;
}

MyScrollView* MyScrollView::create(CCSize size)
{
    MyScrollView* pRet = new MyScrollView();
    if (pRet && pRet->initWithViewSize(size, NULL))
    {
        pRet->autorelease();
    }
    else
    {
        CC_SAFE_DELETE(pRet);
    }
    return pRet;
}



bool MyScrollView::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent){
    bool b = CCScrollView::ccTouchBegan(pTouch, pEvent);
    CCLog("MyScrollView::ccTouchBegan");
    return b;
}
void MyScrollView::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){
    CCScrollView::ccTouchMoved(pTouch, pEvent);
    CCLog("MyScrollView::ccTouchMoved");
    //阻止传递
}
void MyScrollView::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){
    CCScrollView::ccTouchEnded(pTouch, pEvent);
    CCLog("MyScrollView::ccTouchEnded");
    adjustScrollView();
    //不在往下传递事件
}

void MyScrollView::adjustScrollView(){
    // 关闭CCScrollView中的自调整
    this->unscheduleAllSelectors();
    
    int x = this->getContentOffset().x;
    int offset = (int) x % 640;
    // 调整位置
    CCPoint adjustPos;
    // 调整动画时间
    float adjustAnimDelay = 0.15f;
    
    if (offset < -320) {//翻到下一页
        // 计算下一页位置，时间
        adjustPos = ccpSub(this->getContentOffset(), ccp(640 + offset, 0));
    }
    else {//留在当前页
        // 计算当前页位置，时间
        adjustPos = ccpSub(this->getContentOffset(), ccp(offset, 0));
    }
    if(adjustPos.x< -(this->getContentSize().width-640)){//超过最后一页的限制
        adjustPos = CCPointMake(-(this->getContentSize().width-640), 0);
    }
    // 调整位置
    this->setContentOffsetInDuration(adjustPos, adjustAnimDelay);
}

HelloWorldScene.h

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"
#include "cocos-ext.h"
#include "VisibleRect.h"
#include "MyScrollView.h"
using namespace cocos2d;
using namespace cocos2d::extension;

class HelloWorld : public CCLayer,public CCScrollViewDelegate
{
public:
    virtual bool init();
    static cocos2d::CCScene* scene();
    void buttonClick();
    
    virtual void scrollViewDidScroll(CCScrollView* view);
    virtual void scrollViewDidZoom(CCScrollView* view);

    CREATE_FUNC(HelloWorld);
protected:
    MyScrollView *_scrollView;
};

#endif // __HELLOWORLD_SCENE_H__

HelloWorldScene.cpp

#include "HelloWorldScene.h"

USING_NS_CC;

CCScene* HelloWorld::scene()
{
    CCScene *scene = CCScene::create();
    HelloWorld *layer = HelloWorld::create();
    scene->addChild(layer);
    return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    if ( !CCLayer::init() )
    {
        return false;
    }
    CCSprite *bg = CCSprite::create("Default-568h@2x.png");
    bg->setPosition(VisibleRect::center());
    this->addChild(bg);
    
    CCMenuItemImage *button = CCMenuItemImage::create("Icon-144.png", "Icon-144.png", this, menu_selector(HelloWorld::buttonClick));
    CCMenu *menu = CCMenu::create(button,NULL);
    menu->setPosition(CCPointZero);
    button->setPosition(ccp(VisibleRect::leftTop().x+72,VisibleRect::leftTop().y-72));
    this->addChild(menu);
    
    CCLayer *container = CCLayer::create();
    container->setAnchorPoint(CCPointZero);
    container->setPosition(CCPointZero);
    
    CCMenuItemImage *sp = CCMenuItemImage::create("HelloWorld.png", "HelloWorld.png",this,menu_selector(HelloWorld::buttonClick));
    sp->setPosition(VisibleRect::center());
    
    CCMenuItemImage *sp1 = CCMenuItemImage::create("HelloWorld1.png", "HelloWorld1.png",this,menu_selector(HelloWorld::buttonClick));
    sp1->setPosition(ccp(VisibleRect::center().x + VisibleRect::right().x,VisibleRect::center().y ));
    
    CCMenuItemImage *sp2 = CCMenuItemImage::create("HelloWorld2.png", "HelloWorld2.png",this,menu_selector(HelloWorld::buttonClick));
    sp2->setPosition(ccp(VisibleRect::center().x + VisibleRect::right().x * 2,VisibleRect::center().y ));

    CCMenu *menu2 = CCMenu::create(sp,sp1,sp2,NULL);
    menu2->setPosition(CCPointZero);
    menu2->setTouchPriority(2);
    
    container->addChild(menu2);
    container->setContentSize(CCSizeMake(640*3, 1136));//重要，默认是屏幕大小，可以去看源码
    CCLog("container contentsize:%f,%f",container->getContentSize().width,container->getContentSize().height);
    
    
    _scrollView = MyScrollView::create(CCSizeMake(640, 1136));
    //_scrollView->setContentSize();
    _scrollView->setDelegate(this);
    _scrollView->setTouchPriority(1);
    _scrollView->setContainer(container);
    _scrollView->setDirection(kCCScrollViewDirectionHorizontal);
    
    this->addChild(_scrollView);
    
    return true;
}

void HelloWorld::buttonClick(){
    float a = _scrollView->getContentOffset().x;
    if((int)a%640!=0){
        CCLog("**************************isDragging");
    }else{
        CCLog("##########################buttonClick#");
    }
}

void HelloWorld::scrollViewDidScroll(CCScrollView* view){
    CCLog("scrollViewDidScroll");
}
void HelloWorld::scrollViewDidZoom(CCScrollView* view){
    CCLog("scrollViewDidZoom");
}

ScrollView和Menu的触摸事件优先级有点冲突，Menu的值低优先级高，如果不改的话在Menu拖动的话没反应，这应该不是我们想要的。

改了它的优先级之后，拖动可以了，但是拖动后也会触发Menu的点击。

!!!!!!!!肿么办...据说可以阻断事件的传播，但是我不会弄，谁要会请告诉我。!!!!!!!!

变相实现了一下，在按钮的事件中判断ScrollView是否滚动到位，不到位啥也不干。

另外，ScrollView的默认调整被关掉了，自己写了一下，默认的只会自动调整头尾。