(1)Cocos2d-x 2.x
Cocos2d-x 2.x没有提供截图功能,但是可以用CCRenderTexture来实现这个功能:
- void CTestLayer::SaveScreenShot()
- {
- //获取屏幕尺寸
- CCSize size = CCDirector::sharedDirector()->getWinSize();
- //使用屏幕尺寸初始化一个空的渲染纹理对象
- CCRenderTexture* texture = CCRenderTexture::create((int)size.width, (int)size.height);
- //设置位置
- texture->setPosition(ccp(size.width/2, size.height/2));
- //开始获取
- texture->begin();
- //遍历场景节点对象,填充纹理到texure中
- CCDirector::sharedDirector()->getRunningScene()->visit();
- //结束获取
- texture->end();
- //保存为PNG图,Win32/Debug目录下
- texture->saveToFile("screenshot.png", kCCImageFormatPNG);
- }
(2)Cocos2d-x 3.x
在Cocos2d-x 3.2之前,引擎也没有提供截图功能,同样可以使用RenderTexture实现:
- void Director::saveScreenshot(const std::string& fileName,const std::function<void(const std::string&)>& callback)
- {
- Image::Format format;
- //进行后缀判断
- if(std::string::npos != fileName.find_last_of(".")){
- auto extension = fileName.substr(fileName.find_last_of("."),fileName.length());
- if (!extension.compare(".png")) {
- format = Image::Format::PNG;
- } else if(!extension.compare(".jpg")) {
- format = Image::Format::JPG;
- } else{
- log("cocos2d: the image can only be saved as JPG or PNG format");
- return;
- }
- } else {
- log("cocos2d: the image can only be saved as JPG or PNG format");
- return ;
- }
- //获取屏幕尺寸,初始化一个空的渲染纹理对象
- auto renderTexture = RenderTexture::create(getWinSize().width, getWinSize().height, Texture2D::PixelFormat::RGBA8888);
- //清空并开始获取
- renderTexture->beginWithClear(0.0f, 0.0f, 0.0f, 0.0f);
- //遍历场景节点对象,填充纹理到RenderTexture中
- getRunningScene()->visit();
- //结束获取
- renderTexture->end();
- //保存文件
- renderTexture->saveToFile(fileName , format);
- //使用schedule在下一帧中调用callback函数
- auto fullPath = FileUtils::getInstance()->getWritablePath() + fileName;
- auto scheduleCallback = [&,fullPath,callback](float dt){
- callback(fullPath);
- };
- auto _schedule = getRunningScene()->getScheduler();
- _schedule->schedule(scheduleCallback, this, 0.0f,0,0.0f, false, "screenshot");
- }
- void Util::captureScreen(const std::function<void(bool, const std::string&)>& afterCaptured, const std::string& filename);