标签:style blog http io ar color os sp for
<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">这部分代码从网上查阅了一下,基本都是以前版本编写的,需要稍微改动一下即可,效果如图</span>
首先看看在MenuScene.cpp如是如何调用起对话框的 void MenuScene::popupLayer(){ // 定义一个弹出层,传入一张背景图 PopupLayer* popDialog = PopupLayer::create(DIALOG_BG); // ContentSize 是可选的设置,可以不设置,如果设置把它当作 9 图缩放 popDialog->setContentSize(CCSizeMake(Quit_Dialog_Size_Width, Quit_Dialog_Size_Height)); popDialog->setTitle(DIALOG_TITLE); popDialog->setContentText(DIALOG_CONTENT, 20, 60, 250); // 设置回调函数,回调传回一个 CCNode 以获取 tag 判断点击的按钮 popDialog->setCallbackFunc(this, callfuncN_selector(MenuScene::quitButtonCallback)); // 添加按钮,设置图片,文字,tag 信息 popDialog->addButton(BUTTON_BG1, BUTTON_BG3, OK, Btn_Quit_OK_TAG); popDialog->addButton(BUTTON_BG2, BUTTON_BG3, CANCEL, Btn_Quit_Cancel_TAG); this->addChild(popDialog);// 添加到当前层 }
const int Pop_FontSize = 20;//定义字体大小 class PopupLayer :public Layer { static PopupLayer * create(const char* backgroundImage);//根据背景图创建对象 void setTitle(const char* title ,int fontsize=Pop_FontSize);//设置对话框标题 void setContentText(const char* text ,int fontsize=Pop_FontSize ,int padding=50 ,int paddintTop=100);//设置对话框文本内容 void setCallbackFunc(Object* target, SEL_CallFuncN callfun);//设置按键回调方法 bool addButton(const char* normalImage, const char* selectedImage, const char* title, int tag=0);//添加对话框按键,如确认取消 virtual void onEnter();//当进入时调用 virtual void onExit();// void buttonCallback(CCObject* pSender); int m_contentPadding;// 文字内容两边的空白区距离 int m_contentPaddingTop; //文字上边空白区距离 CCObject* m_callbackListener; SEL_CallFuncN m_callback; //定义具有retain属性的变量 CC_SYNTHESIZE_RETAIN(Menu*, m__pMenu, MenuButton); CC_SYNTHESIZE_RETAIN(Sprite*, m__sfBackGround, SpriteBackGround); ……………………. };
PopupLayer.cpp部分代码如下:
PopupLayer::PopupLayer():m__pMenu(NULL), m_contentPadding(0), m_contentPaddingTop(0), m_callbackListener(NULL) , m_callback(NULL), m__sfBackGround(NULL), m__s9BackGround(NULL), m__ltContentText(NULL), m__ltTitle(NULL) { } //释放变量 PopupLayer::~PopupLayer() { CC_SAFE_RELEASE(m__pMenu); CC_SAFE_RELEASE(m__sfBackGround); CC_SAFE_RELEASE(m__ltContentText); CC_SAFE_RELEASE(m__ltTitle); CC_SAFE_RELEASE(m__s9BackGround); }
void PopupLayer::setCallbackFunc(cocos2d::Object *target, SEL_CallFuncN callfun) { //menuItem根据调传入的对象,会进行方法的回调 m_callbackListener = target; m_callback = callfun; }
bool PopupLayer::init() { // 初始化需要的 Menu,随后跟进参数向menu中添加Item选项 Menu* menu = Menu::create(); menu->setPosition(CCPointZero); setMenuButton(menu); setTouchMode(Touch::DispatchMode::ONE_BY_ONE); auto listener = EventListenerTouchOneByOne::create(); listener->setSwallowTouches(true); listener->onTouchBegan = [](Touch *t,Event *e){ CCLog("PopupLayer touch"); return true; }; _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);//屏蔽下层事件响应 return true; }
根据参数,标题,tag ,图片效果,添加MenuItem选项 bool PopupLayer::addButton(const char *normalImage, const char *selectedImage, const char *title, int tag) { Size winSize = CCDirector::getInstance()->getWinSize(); Point pCenter = ccp(winSize.width / 2, winSize.height / 2); // 创建MenuItem按钮,并设置回调方法 MenuItemImage* menuImage = MenuItemImage::create(normalImage, selectedImage, this, menu_selector(PopupLayer::buttonCallback)); menuImage->setTag(tag); menuImage->setPosition(pCenter); // 给MenuItem添加文字说明并设置在MenuItem中位置 Size imenu = menuImage->getContentSize(); LabelTTF* ttf = LabelTTF::create(title, "", 20); ttf->setColor(ccc3(0, 0, 0)); ttf->setPosition(ccp(imenu.width / 2, imenu.height / 2)); menuImage->addChild(ttf); getMenuButton()->addChild(menuImage); return true;
现在来看MenuItem的回调方法buttonCallback
void PopupLayer::buttonCallback(cocos2d::CCObject *pSender) { Node* node = dynamic_cast<Node*>(pSender); CCLog("touch tag: %d", node->getTag()); if (m_callback && m_callbackListener){ (m_callbackListener->*m_callback)(node);//这会调用setCallbackFunc()方法传入的MenuScene对象的quitButtonCallback()方法 } this->removeFromParent();//把对话框从父节点移除 }
对话框弹出前调用onEnter方法进行界面初始化工作
void PopupLayer::onEnter() { ………………….. Size contentSize; // 设置对话框背景,代码省略 // 添加按钮,并设置其位置 this->addChild(getMenuButton()); float btnWidth = contentSize.width / (getMenuButton()->getChildrenCount() + 1); Vector<Node*> vecArray = getMenuButton()->getChildren(); int j=0; for(auto it=vecArray.begin();it!=vecArray.end();it++) { Node* node = dynamic_cast<Node*>(*it); node->setPosition(Point(winSize.width/2 - contentSize.width/2+btnWidth*(j+1),winSize.height/2-contentSize.height/3)); j++; } // 显示对话框标题内容省略 // 添加对话框弹出效果 Action* popupLayer = Sequence::create(ScaleTo::create(0.0, 0.0), ScaleTo::create(0.15, 1.05), ScaleTo::create(0.08, 0.95), ScaleTo::create(0.08, 1.0),NULL); this->runAction(popupLayer); }
代码写的稍微多了些,为便于测试,我把代码上传一下,下载地址如下:
http://download.csdn.net/detail/lideguo1979/8263669未完待续……………………………
Cocos2d-x 3.2 大富翁游戏项目开发-第四部分 退出对话框
标签:style blog http io ar color os sp for
原文地址:http://blog.csdn.net/lideguo1979/article/details/41950319