axmol/cocos2dx/label_nodes/CCLabelTTF.cpp

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

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
in the Software without restriction, including without limitation the rights
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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
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCLabelTTF.h"
#include "CCDirector.h"
#include "CCGLProgram.h"
#include "CCShaderCache.h"
#include "CCApplication.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_hAlignment(kCCTextAlignmentCenter)
, m_vAlignment(kCCVerticalTextAlignmentTop)
, m_pFontName(NULL)
, m_fFontSize(0.0)
, m_string("")
{
}

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

CCLabelTTF * CCLabelTTF::labelWithString(const char *string, const char *fontName, float fontSize)
{
    return labelWithString(string, CCSizeZero, kCCTextAlignmentCenter, kCCVerticalTextAlignmentTop, fontName, fontSize);
}

CCLabelTTF * CCLabelTTF::labelWithString(const char *string, const CCSize& dimensions, CCTextAlignment hAlignment, const char *fontName, float fontSize)
{
    return labelWithString(string, dimensions, hAlignment, kCCVerticalTextAlignmentTop, fontName, fontSize);
}

CCLabelTTF* CCLabelTTF::labelWithString(const char *string, const cocos2d::CCSize &dimensions, CCTextAlignment hAlignment, CCVerticalTextAlignment vAlignment, const char *fontName, float fontSize)
{
    CCLabelTTF *pRet = new CCLabelTTF();
    if(pRet && pRet->initWithString(string, dimensions, hAlignment, vAlignment, 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)
{
    return this->initWithString(label, dimensions, alignment, kCCVerticalTextAlignmentTop, fontName, fontSize);
}

bool CCLabelTTF::initWithString(const char *label, const char *fontName, float fontSize)
{
    return this->initWithString(label, CCSizeZero, kCCTextAlignmentLeft, kCCVerticalTextAlignmentTop, fontName, fontSize);
}

bool CCLabelTTF::initWithString(const char *string, const cocos2d::CCSize &dimensions, CCTextAlignment hAlignment, CCVerticalTextAlignment vAlignment, const char *fontName, float fontSize)
{
    if (CCSprite::init())
    {
        // shader program
        this->setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(SHADER_PROGRAM));
        
        m_tDimensions = CCSizeMake(dimensions.width, dimensions.height);
        m_hAlignment = hAlignment;
        m_vAlignment = vAlignment;
        m_pFontName = new std::string(fontName);
        m_fFontSize = fontSize;
        
        this->setString(string);
        
        return true;
    }
    
    return false;
}

void CCLabelTTF::setString(const char *string)
{
    CCAssert(string != NULL, "Invalid string");
    
    if (m_string.compare(string))
    {
        m_string = string;
        
        this->updateTexture();
    }
}

const char* CCLabelTTF::getString(void)
{
    return m_string.c_str();
}

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

CCTextAlignment CCLabelTTF::getHorizontalAlignment()
{
    return m_hAlignment;
}

void CCLabelTTF::setHorizontalAlignment(CCTextAlignment alignment)
{
    if (alignment != m_hAlignment)
    {
        m_hAlignment = alignment;
        
        // Force update
        if (m_string.size() > 0)
        {
            this->updateTexture();
        }
    }
}

CCVerticalTextAlignment CCLabelTTF::getVerticalAlignment()
{
    return m_vAlignment;
}

void CCLabelTTF::setVerticalAlignment(CCVerticalTextAlignment verticalAlignment)
{
    if (verticalAlignment != m_vAlignment)
    {
        m_vAlignment = verticalAlignment;
        
        // Force update
        if (m_string.size() > 0)
        {
            this->updateTexture();
        }
    }
}

CCSize CCLabelTTF::getDimensions()
{
    return m_tDimensions;
}

void CCLabelTTF::setDimensions(CCSize &dim)
{
    if (dim.width != m_tDimensions.width || dim.height != m_tDimensions.height)
    {
        m_tDimensions = dim;
        
        // Force udpate
        if (m_string.size() > 0)
        {
            this->updateTexture();
        }
    }
}

float CCLabelTTF::getFontSize()
{
    return m_fFontSize;
}

void CCLabelTTF::setFontSize(float fontSize)
{
    if (m_fFontSize != fontSize)
    {        
        // Force update
        if (m_string.size() > 0)
        {
            this->updateTexture();
        }
    }
}

const char* CCLabelTTF::getFontName()
{
    return m_pFontName->c_str();
}

void CCLabelTTF::setFontName(const char *fontName)
{
    if (m_pFontName->compare(fontName))
    {
        delete m_pFontName;
        m_pFontName = new std::string(fontName);
        
        // Force update
        if (m_string.size() > 0)
        {
            this->updateTexture();
        }
    }
}

// Helper
void CCLabelTTF::updateTexture()
{
    CCTexture2D *tex;
	if (m_tDimensions.width == 0 || m_tDimensions.height == 0)
    {
        tex = new CCTexture2D();
        tex->initWithString(m_string.c_str(), m_pFontName->c_str(), m_fFontSize * CC_CONTENT_SCALE_FACTOR()) ;
    }
	else
    {
        tex = new CCTexture2D();
        tex->initWithString(m_string.c_str(),
                            CC_SIZE_POINTS_TO_PIXELS(m_tDimensions), 
                            m_hAlignment,
                            m_vAlignment,
                            m_pFontName->c_str(),
                            m_fFontSize * CC_CONTENT_SCALE_FACTOR());
    }
		
	// iPad ?
	//if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
    if (CCApplication::sharedApplication().isIpad())
    {            
		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);
        }
	}
	
    this->setTexture(tex);
    tex->release();
	
	CCRect rect = CCRectZero;
    rect.size = m_pobTexture->getContentSize();
    this->setTextureRect(rect);
}

NS_CC_END