axmol/cocos/base/ccUtils.cpp

/****************************************************************************
Copyright (c) 2010      cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "base/ccUtils.h"

#include <stdlib.h>

#include "base/CCDirector.h"
#include "renderer/CCCustomCommand.h"
#include "renderer/CCRenderer.h"
#include "platform/CCImage.h"
#include "platform/CCFileUtils.h"

NS_CC_BEGIN

int ccNextPOT(int x)
{
    x = x - 1;
    x = x | (x >> 1);
    x = x | (x >> 2);
    x = x | (x >> 4);
    x = x | (x >> 8);
    x = x | (x >>16);
    return x + 1;
}

namespace utils
{
/**
 * Capture screen implementation, don't use it directly.
 */
void onCaptureScreen(const std::function<void(bool, const std::string&)>& afterCaptured, const std::string& filename)
{
    auto glView = Director::getInstance()->getOpenGLView();
    auto frameSize = glView->getFrameSize();
#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC) || (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32) || (CC_TARGET_PLATFORM == CC_PLATFORM_LINUX)
    frameSize = frameSize * glView->getFrameZoomFactor() * glView->getRetinaFactor();
#endif
    
    int width = static_cast<int>(frameSize.width);
    int height = static_cast<int>(frameSize.height);
    
    bool succeed = false;
    std::string outputFile = "";
    
    do
    {
        std::shared_ptr<GLubyte> buffer(new GLubyte[width * height * 4], [](GLubyte* p){ CC_SAFE_DELETE_ARRAY(p); });
        if (!buffer)
        {
            break;
        }
        
        glPixelStorei(GL_PACK_ALIGNMENT, 1);
        glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, buffer.get());
        
        std::shared_ptr<GLubyte> flippedBuffer(new GLubyte[width * height * 4], [](GLubyte* p) { CC_SAFE_DELETE_ARRAY(p); });
        if (!flippedBuffer)
        {
            break;
        }

        for (int row = 0; row < height; ++row)
        {
            memcpy(flippedBuffer.get() + (height - row - 1) * width * 4, buffer.get() + row * width * 4, width * 4);
        }

        std::shared_ptr<Image> image(new Image);
        if (image)
        {
            image->initWithRawData(flippedBuffer.get(), width * height * 4, width, height, 8);
            if (FileUtils::getInstance()->isAbsolutePath(filename))
            {
                outputFile = filename;
            }
            else
            {
                CCASSERT(filename.find("/") == std::string::npos, "The existence of a relative path is not guaranteed!");
                outputFile = FileUtils::getInstance()->getWritablePath() + filename;
            }
            succeed = image->saveToFile(outputFile);
        }
    }while(0);
    
    if (afterCaptured)
    {
        afterCaptured(succeed, outputFile);
    }
}
/*
 * Capture screen interface
 */
void captureScreen(const std::function<void(bool, const std::string&)>& afterCaptured, const std::string& filename)
{
    static CustomCommand captureScreenCommand;
    captureScreenCommand.init(std::numeric_limits<float>::max());
    captureScreenCommand.func = std::bind(onCaptureScreen, afterCaptured, filename);
    Director::getInstance()->getRenderer()->addCommand(&captureScreenCommand);
}
    
std::vector<Node*> findChildren(const Node &node, const std::string &name)
{
    std::vector<Node*> vec;
    
    node.enumerateChildren(name, [&vec](Node* nodeFound) -> bool {
        vec.push_back(nodeFound);
        return false;
    });

    return vec;
}

#define MAX_ITOA_BUFFER_SIZE 256
double atof(const char* str)
{
    if (str == nullptr)
    {
        return 0.0;
    }
    
    char buf[MAX_ITOA_BUFFER_SIZE];
    strncpy(buf, str, MAX_ITOA_BUFFER_SIZE);
    
    // strip string, only remain 7 numbers after '.'
    char* dot = strchr(buf, '.');
    if (dot != nullptr && dot - buf + 8 <  MAX_ITOA_BUFFER_SIZE)
    {
        dot[8] = '\0';
    }
    
    return ::atof(buf);
}

double gettime()
{
    struct timeval tv;
    gettimeofday(&tv, nullptr);

    return (double)tv.tv_sec + (double)tv.tv_usec/1000000;
}

long long getTimeInMilliseconds()
{
    struct timeval tv;
    gettimeofday (&tv, NULL);
    return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}

Rect getCascadeBoundingBox(Node *node)
{
    Rect cbb;
    Size contentSize = node->getContentSize();
    
    // check all childrens bounding box, get maximize box
    Node* child = nullptr;
    bool merge = false;
    for(auto object : node->getChildren())
    {
        child = dynamic_cast<Node*>(object);
        if (!child->isVisible()) continue;
        
        const Rect box = getCascadeBoundingBox(child);
        if (box.size.width <= 0 || box.size.height <= 0) continue;
        
        if (!merge)
        {
            cbb = box;
            merge = true;
        }
        else
        {
            cbb.merge(box);
        }
    }
    
    // merge content size
    if (contentSize.width > 0 && contentSize.height > 0)
    {
        const Rect box = RectApplyAffineTransform(Rect(0, 0, contentSize.width, contentSize.height), node->getNodeToWorldAffineTransform());
        if (!merge)
        {
            cbb = box;
        }
        else
        {
            cbb.merge(box);
        }
    }
    
    return cbb;
}
    
}

NS_CC_END