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;
		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();
}

char * CCLabelTTF::description()
{
	char *ret = new char[100] ;
	sprintf(ret, "<CCLabelTTF | FontName = %s, FontSize = %.1f>", m_pFontName->c_str(), m_fFontSize);
	return ret;
}

NS_CC_END