axmol/cocos2dx/label_nodes/CCLabelTTF.cpp

/****************************************************************************
Copyright (c) 2010-2011 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada

http://www.cocos2d-x.org

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#include "CCLabelTTF.h"
#include "CCDirector.h"
#include "CCGLProgram.h"
#include "CCShaderCache.h"

NS_CC_BEGIN

#if CC_USE_LA88_LABELS
#define SHADER_PROGRAM kCCShader_PositionTextureColor
#else
#define SHADER_PROGRAM kCCShader_PositionTextureA8Color
#endif

//
//CCLabelTTF
//
CCLabelTTF::CCLabelTTF()
    : m_eAlignment(CCTextAlignmentCenter)
    , m_pFontName(NULL)
    , m_fFontSize(0.0)
    , m_pString(NULL)
{
}

CCLabelTTF::~CCLabelTTF()
{
    CC_SAFE_DELETE(m_pFontName);
    CC_SAFE_DELETE(m_pString);        
}

CCLabelTTF * CCLabelTTF::labelWithString(const char *label, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize)
{
    CCLabelTTF *pRet = new CCLabelTTF();
    if(pRet && pRet->initWithString(label, dimensions, alignment, fontName, fontSize))
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}
CCLabelTTF * CCLabelTTF::labelWithString(const char *label, const char *fontName, float fontSize)
{
    CCLabelTTF *pRet = new CCLabelTTF();
    if(pRet && pRet->initWithString(label, fontName, fontSize))
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}

bool CCLabelTTF::init()
{
    return this->initWithString("", "Helvetica", 12);
}

bool CCLabelTTF::initWithString(const char *label, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize)
{
    CCAssert(label != NULL, "");
    if (CCSprite::init())
    {
        // shader program
        setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(SHADER_PROGRAM));

        m_tDimensions = CCSizeMake( dimensions.width * CC_CONTENT_SCALE_FACTOR(), dimensions.height * CC_CONTENT_SCALE_FACTOR() );
        m_eAlignment = alignment;

        CC_SAFE_DELETE(m_pFontName);
        m_pFontName = new std::string(fontName);

        m_fFontSize = fontSize * CC_CONTENT_SCALE_FACTOR();
        this->setString(label);
        return true;
    }
    return false;
}
bool CCLabelTTF::initWithString(const char *label, const char *fontName, float fontSize)
{
    CCAssert(label != NULL, "");
    if (CCSprite::init())
    {
        // shader program
        setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(SHADER_PROGRAM));

        m_tDimensions = CCSizeZero;

        CC_SAFE_DELETE(m_pFontName);
        m_pFontName = new std::string(fontName);

        m_fFontSize = fontSize * CC_CONTENT_SCALE_FACTOR();
        this->setString(label);
        return true;
    }
    return false;
}
void CCLabelTTF::setString(const char *label)
{
    if (m_pString)
    {
        delete m_pString;
        m_pString = NULL;
    }
    m_pString = new std::string(label);
    
    CCTexture2D *texture;
    if( CCSize::CCSizeEqualToSize( m_tDimensions, CCSizeZero ) )
    {
        texture = new CCTexture2D();
        texture->initWithString(label, m_pFontName->c_str(), m_fFontSize);
    }
    else
    {
        texture = new CCTexture2D();
        texture->initWithString(label, m_tDimensions, m_eAlignment, m_pFontName->c_str(), m_fFontSize);
    }

// TODO
// #ifdef __CC_PLATFORM_IOS
//     // iPad ?
//     if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
//         if( CC_CONTENT_SCALE_FACTOR() == 2 )
//             [tex setResolutionType:kCCResolutioniPadRetinaDisplay];
//         else
//             [tex setResolutionType:kCCResolutioniPad];
//     }
//     // iPhone ?
//     else
//     {
//         if( CC_CONTENT_SCALE_FACTOR() == 2 )
//             [tex setResolutionType:kCCResolutioniPhoneRetinaDisplay];
//         else
//             [tex setResolutionType:kCCResolutioniPhone];
//     }
// #end
    this->setTexture(texture);
    texture->release();

    CCRect rect = CCRectZero;
    rect.size = m_pobTexture->getContentSize();
    this->setTextureRect(rect);
}

const char* CCLabelTTF::getString(void)
{
    return m_pString->c_str();
}

const char* CCLabelTTF::description()
{
    return CCString::stringWithFormat("<CCLabelTTF | FontName = %s, FontSize = %.1f>", m_pFontName->c_str(), m_fFontSize)->getCString();
}

NS_CC_END