cocos2d-x 模态对话框基类

//  WCBaseLayer.h

// 原理：

// 模态对话框 能够拦截所有下层的消息

// cocos2d-x 消息处理优先级【-128,128】越小优先级越高

// 菜单kCCMenuHandlerPriority优先级 -128要想拦截所有消息(包括菜单) 

// 必须将我们的模态对话框优先级<-128 但是也意味着拦截了当前模态对话框的菜单消息(-128)

// 我们需要手动将消息传给模态对话框上的按钮进行处理

// 使用：1.重载OnInitDialog将需要的控件添加到dlg上

//       2.需要响应事件的按钮使用pushMenu添加

//       3.派生类需要实现宏CREATE_FUNC(class_name)

#ifndef _WCBASELAYER_H_#define _WCBASELAYER_H_#include "cocos2d.h"class WCBaseLayer: public cocos2d::CCLayerColor{public:    WCBaseLayer();    virtual ~WCBaseLayer();public:    /** 初始化对话框 */    virtual bool initWithMenu(cocos2d::CCMenu *pMenu);    virtual void onEnter();    virtual void onExit();    virtual bool ccTouchBegan(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent);    virtual void ccTouchMoved(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent);    virtual void ccTouchEnded(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent);    virtual void ccTouchCancelled(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent);private:    cocos2d::CCMenu *m_menu;             // 模态对话框菜单    bool m_touched;                  // 记录菜单点击};#endif

//WCBaseLayer.cpp

#include "WcBaseLayer.h"USING_NS_CC;WCBaseLayer::WCBaseLayer():    m_menu(NULL),    m_touched(false){}WCBaseLayer::~WCBaseLayer(){}bool WCBaseLayer::initWithMenu(cocos2d::CCMenu *pMenu){    if(!CCLayerColor::initWithColor(ccc4(0, 0, 0, 125)))    {        return false;    }    m_menu = pMenu;    return true;}void WCBaseLayer::onEnter(){    CCLayerColor::onEnter();    // 屏蔽所有priority比自己大的消息    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, kCCMenuHandlerPriority - 1, true);}void WCBaseLayer::onExit(){    CCLayerColor::onExit();    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);}bool WCBaseLayer::ccTouchBegan(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent){    // 因为拦截了所有消息(包括按钮) 所以需要将消息手动传给模态对话框上的按钮    if (m_menu) {        m_touched = m_menu->ccTouchBegan(pTouch, pEvent);    }        return true;}void WCBaseLayer::ccTouchMoved(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent){    if (m_touched) {        if (m_menu) {            m_menu->ccTouchMoved(pTouch, pEvent);        }    }}void WCBaseLayer::ccTouchEnded(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent){    if (m_touched) {        if (m_menu) {            m_menu->ccTouchEnded(pTouch, pEvent);        }        m_touched = false;    }}void WCBaseLayer::ccTouchCancelled(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent){    if (m_touched) {        if (m_menu) {            m_menu->ccTouchEnded(pTouch, pEvent);        }        m_touched = false;    }}

//TestDlg.h

#ifndef _EXITDLG_H_#define _EXITDLG_H_#include "WCBaseLayer.h"class TestDlg : public WCBaseLayer{public:    virtual bool init();    CREATE_FUNC(TestDlg);        //菜单回调函数    void call_ok(CCObject *pSender);    void call_cancel(CCObject *pSender);        cocos2d::CCMenu *initMenu();public:    /** 确认和退出按钮 */    void okMenuItemCallback(CCObject *obj);    void cancelMenuItemCallback(CCObject *obj);};#endif

//TestDlg.cpp

#include "TestDlg.h"#include "cocos2d.h"USING_NS_CC;#define NAME_OK     "sure.png"#define NAME_CANCEL "cancel.png"#define NAME_BG     "chkmsg.png"bool TestDlg::init(){    if (!WCBaseLayer::initWithMenu(initMenu())) {        return false;    }        return true;}cocos2d::CCMenu *TestDlg::initMenu(){    CCSize winSize = CCDirector::sharedDirector()->getWinSize();        //创建menu背景    CCSprite *sprite = CCSprite::create(NAME_BG);    sprite->setPosition(ccp(winSize.width / 2.0, winSize.height / 2.0));    this->addChild(sprite);        //创建menu    CCMenu *menu = CCMenu::create();    menu->setPosition(ccp(0, 0));    sprite->addChild(menu);        CCSize sz = sprite->getContentSize();        //创建确定、取消按钮    CCMenuItem *okMenuItem = CCMenuItemImage::create(NAME_OK, NAME_OK);    okMenuItem->setPosition(ccp(sz.width / 2.0 - okMenuItem->getContentSize().width / 1.5, okMenuItem->getContentSize().height));    okMenuItem->setTarget(this, menu_selector(TestDlg::call_ok));    menu->addChild(okMenuItem);        CCMenuItem *cancelMenuItem = CCMenuItemImage::create(NAME_CANCEL, NAME_CANCEL);    cancelMenuItem->setPosition(ccp(sz.width / 2.0 + okMenuItem->getContentSize().width / 1.5, okMenuItem->getContentSize().height));    cancelMenuItem->setTarget(this, menu_selector(TestDlg::call_cancel));    menu->addChild(cancelMenuItem);        //创建label    CCLabelTTF *lbl = CCLabelTTF::create("确定要购买？", "Arial", 45.0);    lbl->setColor(ccc3(255, 0, 0));    lbl->setPosition(ccp(sz.width / 2.0, sz.height / 2.0 + 45));    sprite->addChild(lbl);        return menu;}//菜单回调函数void TestDlg::call_ok(CCObject *pSender){    CCLog("ok");    this->removeFromParent();}void TestDlg::call_cancel(CCObject *pSender){    CCLog("cancel");}void TestDlg::okMenuItemCallback(CCObject *obj){    CCDirector::sharedDirector()->end();}void TestDlg::cancelMenuItemCallback(CCObject *obj){    removeFromParentAndCleanup(true);}

资源

chkmsg.png

sure.png

cancel.png