axmol/cocos2dx/label_nodes/CCBitmapFontAtlas.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCBitmapFontAtlas.h"
#include "NSMutableDictionary.h"
#include "CCConfiguration.h"
#include "CCDrawingPrimitives.h"
#include "CCSprite.h"
#include "support/CGPointExtension.h"
namespace cocos2d{
	
	//
	//FNTConfig Cache - free functions
	//
	NSMutableDictionary<std::string, CCBitmapFontConfiguration*> *configurations = NULL;
	CCBitmapFontConfiguration* FNTConfigLoadFile( const char *fntFile)
	{
		CCBitmapFontConfiguration *pRet = NULL;

		if( configurations == NULL )
		{
			configurations = new NSMutableDictionary<std::string, CCBitmapFontConfiguration*>();
			configurations->retain();
		}
		std::string key(fntFile);
		pRet = configurations->objectForKey(key);
		if( pRet == NULL ) {
			pRet = CCBitmapFontConfiguration::configurationWithFNTFile(fntFile);
			configurations->setObject(pRet, key);
		}

		return pRet;
	}

	void FNTConfigRemoveCache( void )
	{
		configurations->removeAllObjects();
	}
	//
	//Hash Element
	//
	// Equal function for targetSet.
	typedef struct _KerningHashElement
	{	
		int				key;		// key for the hash. 16-bit for 1st element, 16-bit for 2nd element
		int				amount;
		UT_hash_handle	hh;
	} tKerningHashElement;
	//
	//BitmapFontConfiguration
	//

	CCBitmapFontConfiguration * CCBitmapFontConfiguration::configurationWithFNTFile(const char *FNTfile)
	{
		CCBitmapFontConfiguration * pRet = new CCBitmapFontConfiguration();
		pRet->initWithFNTfile(FNTfile);
		pRet->autorelease();
		return pRet;
	}
	CCBitmapFontConfiguration * CCBitmapFontConfiguration::initWithFNTfile(const char *FNTfile)
	{
		m_pKerningDictionary = NULL;
		this->parseConfigFile(FNTfile);
		return this;
	}
	CCBitmapFontConfiguration::~CCBitmapFontConfiguration()
	{
		CCLOGINFO( "cocos2d: deallocing CCBitmapFontConfiguration" );
		this->purgeKerningDictionary();
		m_sAtlasName.clear();
	}
	char * CCBitmapFontConfiguration::description(void)
	{
		char *ret = new char[100];
		sprintf_s(ret, 100, "<CCBitmapFontConfiguration | Kernings:%d | Image = %s>", HASH_COUNT(m_pKerningDictionary), m_sAtlasName.c_str());
		return ret;
	}
	void CCBitmapFontConfiguration::purgeKerningDictionary()
	{
		tKerningHashElement *current;
		while(m_pKerningDictionary) 
		{
			current = m_pKerningDictionary; 
			HASH_DEL(m_pKerningDictionary,current);
			free(current);
		}
	}
	void CCBitmapFontConfiguration::parseConfigFile(const char *controlFile)
	{	
		std::string fullpath = CCFileUtils::fullPathFromRelativePath(controlFile);

		FILE *fp;
		if(!(fp = fopen(fullpath.c_str(), "r")))
		{
			NSAssert(0, "CCBitmapFontConfiguration::parseConfigFile | Open file error.");
			return;
		}
		char buffer[1024];
		// Loop through all the lines in the lines array processing each one
		while (!feof(fp))
		{
			fgets(buffer, 1024, fp);
			std::string line = buffer;
			// parse spacing / padding
			if(line.substr(0,strlen("info face")) == "info face") 
			{
				// XXX: info parsing is incomplete
				// Not needed for the Hiero editors, but needed for the AngelCode editor
				//			[self parseInfoArguments:line];
			}
			// Check to see if the start of the line is something we are interested in
			else if(line.substr(0,strlen("common lineHeight")) == "common lineHeight")
			{
				this->parseCommonArguments(line);
			}
			else if(line.substr(0,strlen("page id")) == "page id")
			{
				this->parseImageFileName(line, controlFile);
			}
			else if(line.substr(0,strlen("chars c")) == "chars c")
			{
				// Ignore this line
			}
			else if(line.substr(0,strlen("char")) == "char")
			{
				// Parse the current line and create a new CharDef
				ccBitmapFontDef characterDefinition;
				this->parseCharacterDefinition(line, &characterDefinition);

				// Add the CharDef returned to the charArray
				m_pBitmapFontArray[ characterDefinition.charID ] = characterDefinition;
			}
			else if(line.substr(0,strlen("kernings count")) == "kernings count")
			{
				this->parseKerningCapacity(line);
			}
			else if(line.substr(0,strlen("kerning first")) == "kerning first")
			{
				this->parseKerningEntry(line);
			}
		}
		fclose(fp);
	}
	void CCBitmapFontConfiguration::parseImageFileName(std::string line, const char *fntFile)
	{
		//////////////////////////////////////////////////////////////////////////
		// line to parse:
		// page id=0 file="bitmapFontTest.png"
		//////////////////////////////////////////////////////////////////////////

		// page ID. Sanity check
		int index = line.find('=')+1;
		int index2 = line.find(' ', index);
		std::string value = line.substr(index, index2-index);
		NSAssert(atoi(value.c_str()) == 0, "BitmapFontAtlas file could not be found");
		// file 
		index = line.find('"')+1;
		index2 = line.find('"', index);
		value = line.substr(index, index2-index);

		m_sAtlasName = CCFileUtils::fullPathFromRelativePath(value.c_str());
	}
	void CCBitmapFontConfiguration::parseInfoArguments(std::string line)
	{
		//////////////////////////////////////////////////////////////////////////
		// possible lines to parse:
		// info face="Script" size=32 bold=0 italic=0 charset="" unicode=1 stretchH=100 smooth=1 aa=1 padding=1,4,3,2 spacing=0,0 outline=0
		// info face="Cracked" size=36 bold=0 italic=0 charset="" unicode=0 stretchH=100 smooth=1 aa=1 padding=0,0,0,0 spacing=1,1
		//////////////////////////////////////////////////////////////////////////

		// padding
		int index = line.find("padding=");
		int index2 = line.find(' ', index);
		std::string value = line.substr(index, index2-index);
		sscanf(value.c_str(), "padding=%d,%d,%d,%d", &m_tPadding.top, &m_tPadding.right, &m_tPadding.bottom, &m_tPadding.left);
		CCLOG("cocos2d: padding: %d,%d,%d,%d", m_tPadding.left, m_tPadding.top, m_tPadding.right, m_tPadding.bottom);
	}
	void CCBitmapFontConfiguration::parseCommonArguments(std::string line)
	{
		//////////////////////////////////////////////////////////////////////////
		// line to parse:
		// common lineHeight=104 base=26 scaleW=1024 scaleH=512 pages=1 packed=0
		//////////////////////////////////////////////////////////////////////////
		
		// Height
		int index = line.find("lineHeight=");
		int index2 = line.find(' ', index);
		std::string value = line.substr(index, index2-index);
		sscanf(value.c_str(), "lineHeight=%u", &m_uCommonHeight);
		// scaleW. sanity check
		index = line.find("scaleW=") + strlen("scaleW=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		NSAssert(atoi(value.c_str()) <= CCConfiguration::sharedConfiguration()->getMaxTextureSize(), "CCBitmapFontAtlas: page can't be larger than supported");
		// scaleH. sanity check
		index = line.find("scaleH=") + strlen("scaleH=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		NSAssert(atoi(value.c_str()) <= CCConfiguration::sharedConfiguration()->getMaxTextureSize(), "CCBitmapFontAtlas: page can't be larger than supported");
		// pages. sanity check
		index = line.find("pages=") + strlen("pages=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		NSAssert(atoi(value.c_str()) == 1, "CCBitfontAtlas: only supports 1 page");

		// packed (ignore) What does this mean ??
	}
	void CCBitmapFontConfiguration::parseCharacterDefinition(std::string line, ccBitmapFontDef *characterDefinition)
	{	
		//////////////////////////////////////////////////////////////////////////
		// line to parse:
		// char id=32   x=0     y=0     width=0     height=0     xoffset=0     yoffset=44    xadvance=14     page=0  chnl=0 
		//////////////////////////////////////////////////////////////////////////

		// Character ID
		int index = line.find("id=");
		int index2 = line.find(' ', index);
		std::string value = line.substr(index, index2-index);
		sscanf(value.c_str(), "id=%u", &characterDefinition->charID);
		NSAssert(characterDefinition->charID < kCCBitmapFontAtlasMaxChars, "BitmpaFontAtlas: CharID bigger than supported");
		// Character x
		index = line.find("x=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "x=%f", &characterDefinition->rect.origin.x);
		// Character y
		index = line.find("y=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "y=%f", &characterDefinition->rect.origin.y);
		// Character width
		index = line.find("width=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "width=%f", &characterDefinition->rect.size.width);
		// Character height
		index = line.find("height=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "height=%f", &characterDefinition->rect.size.height);
		// Character xoffset
		index = line.find("xoffset=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "xoffset=%d", &characterDefinition->xOffset);
		// Character yoffset
		index = line.find("yoffset=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "yoffset=%d", &characterDefinition->yOffset);
		// Character xadvance
		index = line.find("xadvance=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "xadvance=%d", &characterDefinition->xAdvance);
	}
	void CCBitmapFontConfiguration::parseKerningCapacity(std::string line)
	{
		// When using uthash there is not need to parse the capacity.

		//	NSAssert(!kerningDictionary, @"dictionary already initialized");
		//	
		//	// Break the values for this line up using =
		//	NSArray *values = [line componentsSeparatedByString:@"="];
		//	NSEnumerator *nse = [values objectEnumerator];	
		//	NSString *propertyValue;
		//	
		//	// We need to move past the first entry in the array before we start assigning values
		//	[nse nextObject];
		//	
		//	// count
		//	propertyValue = [nse nextObject];
		//	int capacity = [propertyValue intValue];
		//	
		//	if( capacity != -1 )
		//		kerningDictionary = ccHashSetNew(capacity, targetSetEql);
	}
	void CCBitmapFontConfiguration::parseKerningEntry(std::string line)
	{		
		//////////////////////////////////////////////////////////////////////////
		// line to parse:
		// kerning first=121  second=44  amount=-7
		//////////////////////////////////////////////////////////////////////////

		// first
		int first;
		int index = line.find("first=");
		int index2 = line.find(' ', index);
		std::string value = line.substr(index, index2-index);
		sscanf(value.c_str(), "first=%d", &first);

		// second
		int second;
		index = line.find("second=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "second=%d", &second);

		// amount
		int amount;
		index = line.find("amount=");
		index2 = line.find(' ', index);
		value = line.substr(index, index2-index);
		sscanf(value.c_str(), "amount=%d", &amount);

		tKerningHashElement *element = (tKerningHashElement *)calloc( sizeof( *element ), 1 );
		element->amount = amount;
		element->key = (first<<16) | (second&0xffff);
		HASH_ADD_INT(m_pKerningDictionary,key, element);
	}
	//
	//CCBitmapFontAtlas
	//

	//BitmapFontAtlas - Purge Cache
	void CCBitmapFontAtlas::purgeCachedData()
	{
		FNTConfigRemoveCache();
	}

	//BitmapFontAtlas - Creation & Init
	CCBitmapFontAtlas *CCBitmapFontAtlas::bitmapFontAtlasWithString(const char *str, const char *fntFile)
	{
		CCBitmapFontAtlas *pRet = new CCBitmapFontAtlas();
		if(pRet->initWithString(str, fntFile))
		{
			pRet->autorelease();
			return pRet;
		}
		return NULL;
	}
	CCBitmapFontAtlas * CCBitmapFontAtlas::initWithString(const char *theString, const char *fntFile)
	{	
		m_pConfiguration->release();// allow re-init
		m_pConfiguration = FNTConfigLoadFile(fntFile);
		m_pConfiguration->retain();
		NSAssert( m_pConfiguration, "Error creating config for BitmapFontAtlas");

		if (__super::initWithFile(m_pConfiguration->m_sAtlasName.c_str(), strlen(theString)))
		{
			m_cOpacity = 255;
			m_tColor = ccWHITE;
			m_tContentSize = CGSizeZero;
			m_bIsOpacityModifyRGB = m_pobTextureAtlas->getTexture()->getHasPremultipliedAlpha();
			m_tAnchorPoint = ccp(0.5f, 0.5f);
			this->setString(theString);
			return this;
		}
		return NULL;
	}
	CCBitmapFontAtlas::~CCBitmapFontAtlas()
	{
		m_sString.clear();
		m_pConfiguration->release();
	}

	// BitmapFontAtlas - Atlas generation
	int CCBitmapFontAtlas::kerningAmountForFirst(INT16 first, INT16 second)
	{
		int ret = 0;
		unsigned int key = (first<<16) | (second & 0xffff);

		if( m_pConfiguration->m_pKerningDictionary ) {
			tKerningHashElement *element = NULL;
			HASH_FIND_INT(m_pConfiguration->m_pKerningDictionary, &key, element);		
			if(element)
				ret = element->amount;
		}
		return ret;
	}
	void CCBitmapFontAtlas::createFontChars()
	{
		int nextFontPositionX = 0;
		INT16 prev = -1;
		int kerningAmount = 0;

		CGSize tmpSize = CGSizeZero;
		UINT32 len = m_sString.length();
		for(UINT32 i=0; i<len; i++) {
			INT16 c = m_sString[i];
			NSAssert( c < kCCBitmapFontAtlasMaxChars, "BitmapFontAtlas: character outside bounds");

			kerningAmount = this->kerningAmountForFirst(prev, (INT16)c);

			ccBitmapFontDef fontDef = m_pConfiguration->m_pBitmapFontArray[c];

			CGRect rect = fontDef.rect;

			CCSprite *fontChar;

			fontChar = (CCSprite*)(this->getChildByTag(i));
			if( ! fontChar ) {
				fontChar = new CCSprite();
				fontChar->initWithSpriteSheet(this, rect);
				this->addChild(fontChar, 0, i);
				fontChar->release();
			}
			else
			{
				// reusing fonts
				fontChar->setTextureRect(rect);

				// restore to default in case they were modified
				fontChar->setIsVisible(true);
				fontChar->setOpacity(255);
			}

			fontChar->setPosition( ccp( nextFontPositionX + fontDef.xOffset + fontDef.rect.size.width / 2.0f ,
				(m_pConfiguration->m_uCommonHeight - fontDef.yOffset) - rect.size.height/2.0f ) );		

			//		NSLog(@"position.y: %f", fontChar.position.y);

			// update kerning
			fontChar->setPosition( ccpAdd( fontChar->getPosition(), ccp((float)kerningAmount,0)) );
			nextFontPositionX += m_pConfiguration->m_pBitmapFontArray[c].xAdvance + kerningAmount;
			prev = c;

			tmpSize.width += m_pConfiguration->m_pBitmapFontArray[c].xAdvance + kerningAmount;
			tmpSize.height = (float)(m_pConfiguration->m_uCommonHeight);

			// Apply label properties
			fontChar->setIsOpacityModifyRGB(m_bIsOpacityModifyRGB);
			// Color MUST be set before opacity, since opacity might change color if OpacityModifyRGB is on
			fontChar->setColor(m_tColor);

			// only apply opaccity if it is different than 255 )
			// to prevent modifying the color too (issue #610)
			if( m_cOpacity != 255 )
			{
				fontChar->setOpacity(m_cOpacity);
			}
		}
		this->setContentSize(tmpSize);
	}

	//BitmapFontAtlas - CCLabelProtocol protocol
	void CCBitmapFontAtlas::setString(const char *newString)
	{	
		m_sString.clear();
		m_sString = newString;

		if (m_pChildren && m_pChildren->count() != 0)
		{
			NSMutableArray<CCNode*>::NSMutableArrayIterator it;
			for(it = m_pChildren->begin(); it != m_pChildren->end(); ++it)
			{
				(*it)->setIsVisible(false);
			}
		}
		this->createFontChars();
	}

	//BitmapFontAtlas - CCRGBAProtocol protocol
	void CCBitmapFontAtlas::setColor(ccColor3B var)
	{
		m_tColor = var;
		if (m_pChildren && m_pChildren->count() != 0)
		{
			NSMutableArray<CCNode*>::NSMutableArrayIterator it;
			for(it = m_pChildren->begin(); it != m_pChildren->end(); ++it)
			{
				(dynamic_cast<CCSprite*>(*it))->setColor(m_tColor);
			}
		}
	}
	ccColor3B CCBitmapFontAtlas::getColor()
	{
		return m_tColor;
	}
	void CCBitmapFontAtlas::setOpacity(GLubyte var)
	{
		m_cOpacity = var;

		if (m_pChildren && m_pChildren->count() != 0)
		{
			NSMutableArray<CCNode*>::NSMutableArrayIterator it;
			for(it = m_pChildren->begin(); it != m_pChildren->end(); ++it)
			{
				(dynamic_cast<CCRGBAProtocol*>(*it))->setOpacity(m_cOpacity);
			}
		}
	}
	GLubyte CCBitmapFontAtlas::getOpacity()
	{
		return m_cOpacity;
	}
	void CCBitmapFontAtlas::setIsOpacityModifyRGB(bool var)
	{
		m_bIsOpacityModifyRGB = var;
		if (m_pChildren && m_pChildren->count() != 0)
		{
			NSMutableArray<CCNode*>::NSMutableArrayIterator it;
			for(it = m_pChildren->begin(); it != m_pChildren->end(); ++it)
			{
				(dynamic_cast<CCRGBAProtocol*>(*it))->setIsOpacityModifyRGB(m_bIsOpacityModifyRGB);
			}
		}
	}
	bool CCBitmapFontAtlas::getIsOpacityModifyRGB()
	{
		return m_bIsOpacityModifyRGB;
	}

	// BitmapFontAtlas - AnchorPoint
	void CCBitmapFontAtlas::setAnchorPoint(CGPoint point)
	{
		if( ! CGPoint::CGPointEqualToPoint(point, m_tAnchorPoint) )
		{
			__super::setAnchorPoint(point);
			this->createFontChars();
		}
	}

	//BitmapFontAtlas - Debug draw
#if CC_BITMAPFONTATLAS_DEBUG_DRAW
	void CCBitmapFontAtlas::draw()
	{
		__super::draw();
		CGSize s = this->getContentSize();
		CGPoint vertices[4]={
			ccp(0,0),ccp(s.width,0),
			ccp(s.width,s.height),ccp(0,s.height),
		};
		ccDrawPoly(vertices, 4, true);
	}
#endif // CC_BITMAPFONTATLAS_DEBUG_DRAW

}