cocos2dx ScrollView 测试二自定义Item和boundingBox-白红宇

cocos2dx ScrollView 测试二自定义Item和boundingBox

阅读量：6265 次

发布时间：2019-06-22

本文共 8033 字，大约阅读时间需要 26 分钟。

接上一篇，CCMenu当作ScrollView的Item可能满足不了我现在的需求。

Item中先有个background框，分选中状态...还有个background，还有个CCArmature....

自定义一个类StaticItem继承自CCSprite和CCTouchDelegate

StaticItem.h

////  StaticItem.h//  ScrollViewTest////  Created by HanHongmin on 14-1-2.////#ifndef __ScrollViewTest__StaticItem__#define __ScrollViewTest__StaticItem__#include "cocos2d.h"#include "cocos-ext.h"using namespace cocos2d;using namespace cocos2d::extension;class StaticItem : public CCSprite,public CCTouchDelegate{public:    static StaticItem* create(const char *pszFileName);    void onEnter();    void onExit();    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);    // optional    virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);    virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);    virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);    bool isPointIn(const CCPoint &worldPoint);    void draw();};#endif /* defined(__ScrollViewTest__StaticItem__) */

StaticItem.cpp

////  StaticItem.cpp//  ScrollViewTest////  Created by HanHongmin on 14-1-2.////#include "StaticItem.h"StaticItem* StaticItem::create(const char *pszFileName){    StaticItem *pobSprite = new StaticItem();    if (pobSprite && pobSprite->initWithFile(pszFileName))    {        pobSprite->autorelease();        return pobSprite;    }    CC_SAFE_DELETE(pobSprite);    return NULL;}void StaticItem::onEnter(){    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,10,false);}void StaticItem::onExit(){    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);}bool StaticItem::isPointIn(const CCPoint &worldPoint){    CCPoint o = this->getParent()->convertToWorldSpace(this->boundingBox().origin);    CCRect rect = CCRectMake(o.x, o.y, this->boundingBox().size.width, this->boundingBox().size.height);    return rect.containsPoint(worldPoint);}bool StaticItem::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent){    if (this->isPointIn(pTouch->getLocation())) {
   //在范围内        CCLog("StaticItem::ccTouchBegan ***** in %d",this->getTag());        return true;    }else{        CCLog("StaticItem::ccTouchBegan ##### out %d",this->getTag());        return false;    }}// optionalvoid StaticItem::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){    CCLog("StaticItem::ccTouchMoved");}void StaticItem::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){    CCPoint p1 = pTouch->getLocation();    CCPoint p2 = pTouch->getStartLocation();    if(p1.x==p2.x&&p1.y==p2.y){        CCLog("StaticItem::ccTouchEnded  点击%d",this->getTag());    }else{        CCLog("StaticItem::ccTouchEnded  拖动%d",this->getTag());    }}void StaticItem::ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent){    CCLog("StaticItem::ccTouchCancelled");}void StaticItem::draw(){    CCSprite::draw();    CCRect box = this->boundingBox();    CCPoint p = this->getParent()->convertToWorldSpace(box.origin);    CCRect rect = CCRectMake(p.x, p.y, box.size.width, box.size.height);    ccDrawColor4B(255, 0, 0, 255);    ccDrawRect(convertToNodeSpace(rect.origin), convertToNodeSpace(ccp(rect.getMaxX(), rect.getMaxY())));}

以上红色部分是我遇到问题的部分，不getParent的话，你会发现draw描框永远在那里不跟着动。坐标是错的。

isPointIn方法中也是同样的道理，如果不的话，你会发现点到的永远是那一个item。

接着上代码

HelloWorldScene.h

1 #ifndef __HELLOWORLD_SCENE_H__ 2 #define __HELLOWORLD_SCENE_H__ 3  4 #include "cocos2d.h" 5 #include "cocos-ext.h" 6 #include "VisibleRect.h" 7 #include "MyScrollView.h" 8 #include "StaticItem.h" 9 using namespace cocos2d;10 using namespace cocos2d::extension;11 12 class HelloWorld : public CCLayer,public CCScrollViewDelegate13 {14 public:15     virtual bool init();16     static cocos2d::CCScene* scene();17     void buttonClick();18     19     virtual void scrollViewDidScroll(CCScrollView* view);20     virtual void scrollViewDidZoom(CCScrollView* view);21 22     CREATE_FUNC(HelloWorld);23 protected:24     MyScrollView *_scrollView;25 };26 27 #endif // __HELLOWORLD_SCENE_H__

HelloWorldScene.cpp

1 #include "HelloWorldScene.h" 2  3 USING_NS_CC; 4  5 CCScene* HelloWorld::scene() 6 { 7     CCScene *scene = CCScene::create(); 8     HelloWorld *layer = HelloWorld::create(); 9     scene->addChild(layer);10     return scene;11 }12 13 // on "init" you need to initialize your instance14 bool HelloWorld::init()15 {16     if ( !CCLayer::init() )17     {18         return false;19     }20     CCSprite *bg = CCSprite::create("Default-568h@2x.png");21     bg->setPosition(VisibleRect::center());22     this->addChild(bg);23     24     CCMenuItemImage *button = CCMenuItemImage::create("Icon-144.png", "Icon-144.png", this, menu_selector(HelloWorld::buttonClick));25     CCMenu *menu = CCMenu::create(button,NULL);26     menu->setPosition(CCPointZero);27     button->setPosition(ccp(VisibleRect::leftTop().x+72,VisibleRect::leftTop().y-72));28     this->addChild(menu);29     30     CCLayer *container = CCLayer::create();31     container->setAnchorPoint(CCPointZero);32     container->setPosition(CCPointZero);33     34     StaticItem *item1 = StaticItem::create("HelloWorld0.png");35     item1->setTag(1);36     item1->setPosition(ccp(VisibleRect::center().x,VisibleRect::center().y-300));37     CCSprite *sp1 = CCSprite::create("Icon-144.png");38     item1->addChild(sp1);39     sp1->setPosition(ccp(240,160));40     container->addChild(item1);41     42     StaticItem *item12 = StaticItem::create("HelloWorld0.png");43     item12->setTag(12);44     item12->setPosition(ccp(VisibleRect::center().x,VisibleRect::center().y+300));45     CCSprite *sp12 = CCSprite::create("Icon-144.png");46     item12->addChild(sp12);47     sp12->setPosition(ccp(240,160));48     container->addChild(item12);49     50     StaticItem *item2 = StaticItem::create("HelloWorld1.png");51     item2->setTag(2);52     item2->setPosition(ccp(VisibleRect::center().x + VisibleRect::right().x,VisibleRect::center().y ));53     CCSprite *sp2 = CCSprite::create("Icon-144.png");54     item2->addChild(sp2);55     sp2->setPosition(ccp(240,160));56     container->addChild(item2);57     58     StaticItem *item3 = StaticItem::create("HelloWorld2.png");59     item3->setTag(3);60     item3->setPosition(ccp(VisibleRect::center().x + VisibleRect::right().x * 2,VisibleRect::center().y ));61     CCSprite *sp3 = CCSprite::create("Icon-144.png");62     item3->addChild(sp3);63     sp3->setPosition(ccp(240,160));64     container->addChild(item3);65     66     container->setContentSize(CCSizeMake(640*3, 1136));//重要，默认是屏幕大小，可以去看源码67     CCLog("container contentsize:%f,%f",container->getContentSize().width,container->getContentSize().height);68     69     70     _scrollView = MyScrollView::create(CCSizeMake(640, 1136));71     //_scrollView->setContentSize();72     _scrollView->setDelegate(this);73     _scrollView->setTouchPriority(1);74     _scrollView->setContainer(container);75     _scrollView->setDirection(kCCScrollViewDirectionHorizontal);76     77     this->addChild(_scrollView);78     79     CCRect r1 = item1->boundingBox();80     CCRect r2 = item2->boundingBox();81     CCRect r3 = item3->boundingBox();82     CCLog("item3 boundingBox origin:%f,%f",r3.origin.x,r3.origin.y);83     CCLog("item2 boundingBox origin:%f,%f",r2.origin.x,r2.origin.y);84     CCLog("item1 boundingBox origin:%f,%f",r1.origin.x,r1.origin.y);85     return true;86 }87 88 void HelloWorld::buttonClick(){89     CCLog("##########################buttonClick#");90 }91 92 void HelloWorld::scrollViewDidScroll(CCScrollView* view){93     CCLog("scrollViewDidScroll");94 }95 void HelloWorld::scrollViewDidZoom(CCScrollView* view){96     CCLog("scrollViewDidZoom");97 }

试之，在Item上点击，拖动，都是对的：）

----------------------------

补充：在真机上测试，对于判断是点击还是拖动，不是很理想，大多数情况都被判断成了拖动。

我们给他一个误差值，修改方法如下

void StaticItem::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){    CCPoint p1 = pTouch->getLocation();    CCPoint p2 = pTouch->getStartLocation();    if(abs(p1.x-p2.x)<=10&&abs(p1.y-p2.y)<=10){        CCLog("StaticItem::ccTouchEnded  点击%d",this->getTag());    }else{        CCLog("StaticItem::ccTouchEnded  拖动%d",this->getTag());    }}

转载于:https://www.cnblogs.com/hanhongmin/p/3501789.html

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