coco2dx3.1 弹出框实现

cocos2dx 弹出框 网上有好多实现 但是都不是想要的

此弹出框功能：自定义添加按钮 title 内容 模态实现

直接上代码：

头文件：

#ifndef _POP_LAYER_H_
#define _POP_LAYER_H_

#include "cocos2d.h"
#include "extensions/cocos-ext.h"
USING_NS_CC;

using namespace cocos2d::extension;

class PopupLayer: public cclayer{
public:
	PopupLayer();
	~PopupLayer();

	virtual bool init();
	CREATE_FUNC(PopupLayer);

	//void registerWithTouchdispatcher(void);
	//bool onTouchBegan(cocos2d::CCTouch *pTouch,cocos2d::CCEvent *pEvent);

	static PopupLayer* create(const char* backgroundImage);

	void setTitle(const char* title,int fontsize = 20);
	void setContentText(const char* text,int fontsize = 20,int padding = 50,int paddintTop = 100);

	void setCallbackFunc(Ref* target,SEL_CallFuncN callfun);

	bool addButton(const char* normalImage,const char* selectedImage,const char* title,int tag = 0);    
	virtual void onEnter();
	virtual void onExit();

	void buttonCallback(Ref* pSender);

	bool onTouchBegan(Touch* touch,Event* event);
	void onTouchMoved(Touch* touch,Event* event);
	void onTouchEnded(Touch* touch,Event* event);

private:


	// 文字内容两边的空白区
	int m_contentPadding;
	int m_contentPaddingTop;

	CCObject* m_callbackListener;
	SEL_CallFuncN m_callback;

	CC_SYNTHESIZE_RETAIN(Menu*,m__pMenu,MenuButton);
	CC_SYNTHESIZE_RETAIN(Sprite*,m__sfBackGround,SpriteBackGround);
	CC_SYNTHESIZE_RETAIN(Scale9Sprite*,m__s9BackGround,Sprite9BackGround);
	CC_SYNTHESIZE_RETAIN(cclabelTTF*,m__ltTitle,LabelTitle);
	CC_SYNTHESIZE_RETAIN(cclabelTTF*,m__ltContentText,LabelContentText);


};

#endif;

类名字 随便起的 大家就不要吐槽了………………

cpp文件:

#include "Poplayer.h"

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)
{

}

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);
}

bool PopupLayer::init(){
	bool bRef = false;
	do{
		CC_BREAK_IF(!cclayer::init());
		this->setContentSize(CCSizeZero);

		// 初始化需要的 Menu
		Ccmenu* menu = Ccmenu::create();
		menu->setPosition(CCPointZero);
		setMenuButton(menu);

		setTouchEnabled(true);

		auto listener = EventListenerTouchOneByOne::create();
		listener->setSwallowtouches(true);

		listener->onTouchBegan = CC_CALLBACK_2(PopupLayer::onTouchBegan,this);
		listener->onTouchMoved = CC_CALLBACK_2(PopupLayer::onTouchMoved,this);
		listener->onTouchEnded = CC_CALLBACK_2(PopupLayer::onTouchEnded,this);

		_eventdispatcher->addEventListenerWithSceneGraPHPriority(listener,this);


		bRef = true;
	}while(0);
	return bRef;
}


bool PopupLayer::onTouchBegan(Touch* pTouch,Event* event)
{

	cclog("PopupLayer touch");
	return true;
}

void PopupLayer::onTouchMoved(Touch* touch,Event* event)
{
	log("move");
}

void PopupLayer::onTouchEnded(Touch* touch,Event* event)
{
	log("ended");
}

PopupLayer* PopupLayer::create(const char *backgroundImage){
	PopupLayer* ml = PopupLayer::create();
	ml->setSpriteBackGround(Sprite::create(backgroundImage));
	ml->setSprite9BackGround(Scale9Sprite::create(backgroundImage));
	return ml;
}

void PopupLayer::setTitle(const char *title,int fontsize){
	cclabelTTF* ltfTitle = LabelTTF::create(title,"Arial",fontsize);
	setLabelTitle(ltfTitle);
}

void PopupLayer::setContentText(const char *text,int fontsize,int padding,int paddingTop){
	cclabelTTF* ltf = cclabelTTF::create(text,fontsize);
	setLabelContentText(ltf);
	m_contentPadding = padding;
	m_contentPaddingTop = paddingTop;
}

void PopupLayer::setCallbackFunc(Ref* target,SEL_CallFuncN callfun){
	m_callbackListener = target;
	m_callback = callfun;    
}


bool PopupLayer::addButton(const char *normalImage,const char *selectedImage,const char *title,int tag){
	CCSize winSize = CCDirector::sharedDirector()->getWinSize();
	CCPoint pCenter = ccp(winSize.width / 2,winSize.height / 2);

	// 创建图片菜单按钮
	CcmenuItemImage* menuImage = CcmenuItemImage::create(normalImage,selectedImage,this,menu_selector(PopupLayer::buttonCallback));
	menuImage->setTag(tag);
	menuImage->setPosition(pCenter);

	// 添加文字说明并设置位置
	CCSize imenu = menuImage->getContentSize();
	cclabelTTF* ttf = cclabelTTF::create(title,20);
	ttf->setColor(ccc3(0,0));
	ttf->setPosition(ccp(imenu.width / 2,imenu.height / 2));
	menuImage->addChild(ttf);

	getMenuButton()->addChild(menuImage);
	return true;
}

void PopupLayer::buttonCallback(Ref* pSender){
	Node* node = (Node*)pSender;
	cclog("touch tag: %d",node->getTag());
	if (m_callback && m_callbackListener){
		(m_callbackListener->*m_callback)(node);
	}
	int tag = node->getTag();
	switch(tag)
	{
	case 0:
		{

		}
	case 1:
		{

		}
	default:
		break;
	}
	this->removeFromParent();
}

void PopupLayer::onEnter(){
	cclayer::onEnter();

	CCSize winSize = CCDirector::sharedDirector()->getWinSize();
	CCPoint pCenter = ccp(winSize.width / 2,winSize.height / 2);

	CCSize contentSize;
	// 设定好参数，在运行时加载
	if (getContentSize().equals(CCSizeZero)) {
		getSpriteBackGround()->setPosition(ccp(winSize.width / 2,winSize.height / 2));
		this->addChild(getSpriteBackGround(),0);
		contentSize = getSpriteBackGround()->getTexture()->getContentSize();
	} else {
		Scale9Sprite *background = getSprite9BackGround();
		background->setContentSize(getContentSize());
		background->setPosition(ccp(winSize.width / 2,winSize.height / 2));
		this->addChild(background,0);
		contentSize = getContentSize();
	}


	// 添加按钮，并设置其位置
	this->addChild(getMenuButton());
	float btnWidth = contentSize.width / (getMenuButton()->getChildrenCount() + 1);

	
	 auto array =  getMenuButton()->getChildren();
	Ref* pObj = NULL;

	for(int i = 0;i< array.capacity();i++)
	{
		Node* node = array.at(i);
		node->setPosition(ccp( winSize.width / 2 - contentSize.width / 2 + btnWidth * (i + 1),winSize.height / 2 - contentSize.height / 3));
	}
	

	// 显示对话框标题
	if (getLabelTitle()){
		getLabelTitle()->setPosition(ccpAdd(pCenter,ccp(0,contentSize.height / 2 - 35.0f)));
		this->addChild(getLabelTitle());
	}

	// 显示文本内容
	if (getLabelContentText()){
		cclabelTTF* ltf = getLabelContentText();
		ltf->setPosition(ccp(winSize.width / 2,winSize.height / 2));
		ltf->setDimensions(CCSizeMake(contentSize.width - m_contentPadding * 2,contentSize.height - m_contentPaddingTop));
		ltf->setHorizontalAlignment(kCCTextAlignmentLeft);
		this->addChild(ltf);
	}

	// 弹出效果
	CCAction* popupLayer = CCSequence::create(CCScaleto::create(0.0,0.0),CCScaleto::create(0.06,1.05),CCScaleto::create(0.08,0.95),1.0),NULL);
	this->runAction(popupLayer);

}

void PopupLayer::onExit(){
	cclog("popup on exit.");
	cclayer::onExit();
}

使用方法:

PopupLayer* pl = PopupLayer::create("popuplayer/BackGround.png");
	// ContentSize 是可选的设置，可以不设置，如果设置把它当作 9 图缩放
	pl->setContentSize(CCSizeMake(400,350));
	pl->setTitle("test");
	pl->setContentText(G2U("你好,弹出框"),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
	// 这只是作为一种封装实现，如果使用 delegate 那就能够更灵活的控制参数了
	pl->setCallbackFunc(this,callfuncN_selector(LoginScene::buttonCallback));
	// 添加按钮，设置图片，文字，tag 信息
	pl->addButton("popuplayer/pop_button.png","popuplayer/pop_button.png",G2U("确定"),0);
	pl->addButton("popuplayer/pop_button.png",G2U("取消"),1);
	// 添加到当前层
	this->addChild(pl);

G2U是 gbk转UTF_8 要不然的话 中文会乱码

函数如下：

char* G2U(const char* gb2312)
{
	int len = MultiBytetoWideChar(CP_ACP,gb2312,-1,NULL,0);
	wchar_t* wstr = new wchar_t[len+1];
	memset(wstr,len+1);
	MultiBytetoWideChar(CP_ACP,wstr,len);
	len = WideCharToMultiByte(CP_UTF8,NULL);
	char* str = new char[len+1];
	memset(str,len+1);
	WideCharToMultiByte(CP_UTF8,str,len,NULL);
	if(wstr) delete[] wstr;
	return str;
}

希望大家喜欢