mirror of https://github.com/axmolengine/axmol.git
860 lines
22 KiB
C++
860 lines
22 KiB
C++
/****************************************************************************
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Copyright (c) 2011 cocos2d-x.org http://cocos2d-x.org
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Copyright (c) 2011 Максим Аксенов
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Copyright (c) 2011 Giovanni Zito, Francis Styck
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include <vector>
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#include <string>
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#include <sstream>
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#include "CCImage.h"
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#include "CCCommon.h"
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#include "CCStdC.h"
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#include "CCFileUtils.h"
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#include "s3eFile.h"
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#include "IwUtil.h"
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#include "png.h"
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#include "ft2build.h"
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#include FT_FREETYPE_H
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#define FONT_KERNING 2
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#define RSHIFT6(num) ((num)>>6)
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#include <strings.h>
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extern "C"
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{
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#include <jpeglib.h>
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}
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#include <string>
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// typedef struct
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// {
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// unsigned char* data;
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// int size;
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// int offset;
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// }tImageSource;
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struct TextLine {
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string sLineStr;
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int iLineWidth;
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};
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NS_CC_BEGIN;
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class CC_DLL CCImageHelper
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{
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public:
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CCImageHelper();
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~CCImageHelper();
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// dummy funcs to help libjpeg
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static void JPEGInitSource(j_decompress_ptr cinfo)
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{
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}
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static boolean JPEGFillInputBuffer(j_decompress_ptr cinfo)
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{
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return 0;
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}
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static void JPEGSkipInputData(j_decompress_ptr cinfo, long num_bytes)
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{
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cinfo->src->next_input_byte += num_bytes;
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cinfo->src->bytes_in_buffer -= num_bytes;
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}
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static void JPEGTermSource(j_decompress_ptr cinfo)
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{
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}
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};
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class BitmapDC
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{
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public:
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BitmapDC();
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~BitmapDC();
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void reset();
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bool getBitmap(const char *text, int nWidth, int nHeight, CCImage::ETextAlign eAlignMask, const char * pFontName, uint fontSize);
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public:
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unsigned char* m_pData;
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int m_iMaxLineWidth;
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int m_iMaxLineHeight;
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private:
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void buildLine(stringstream& ss, FT_Face face, int iCurXCursor, char cLastChar);
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bool divideString(FT_Face face, const char* sText, int iMaxWidth, int iMaxHeight);
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/**
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* compute the start pos of every line
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* return value>0 represents the start x pos of the line, while -1 means fail
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*/
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int computeLineStart(FT_Face face, CCImage::ETextAlign eAlignMask, char cText, int iLineIndex);
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bool startsWith(const std::string& str, const std::string& what);
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bool endsWith(const std::string& str, const std::string& what);
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std::string fileNameExtension(const std::string& pathName);
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std::string basename(const std::string& pathName);
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int openFont(const std::string& fontName, uint fontSize);
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private:
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FT_Library m_library;
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FT_Face m_face ;
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std::string m_fontName ;
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uint m_fontSize ;
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int m_libError;
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int m_iInterval;
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vector<TextLine> m_vLines;
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};
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bool BitmapDC::startsWith(const std::string& str, const std::string& what)
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{
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bool result = false ;
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if( what.size() <= str.size() ) {
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result = (str.substr( 0, what.size() ) == what) ;
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}
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return result ;
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}
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bool BitmapDC::endsWith(const std::string& str, const std::string& what)
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{
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bool result = false ;
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if( what.size() <= str.size() ) {
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result = (str.substr( str.size() - what.size() ) == what) ;
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}
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return result ;
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}
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std::string BitmapDC::fileNameExtension(const std::string& pathName)
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{
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std::string ext ;
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std::string::size_type pos = pathName.find_last_of(".") ;
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if( pos != std::string::npos && pos != pathName.size()-1 ) {
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ext = pathName.substr(pos+1) ;
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}
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return ext ;
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}
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std::string BitmapDC::basename(const std::string& pathName)
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{
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int pos = pathName.rfind("/");
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std::string bn = pathName.substr(pos + 1, pathName.length() - pos + 1);
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return bn ;
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}
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BitmapDC::BitmapDC() :
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m_face(NULL)
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,m_fontName()
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,m_fontSize(0)
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,m_iInterval(FONT_KERNING)
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,m_pData(NULL)
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{
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m_libError = FT_Init_FreeType( &m_library );
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reset();
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}
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BitmapDC::~BitmapDC()
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{
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// free face
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if( m_face ) {
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FT_Done_Face(m_face);
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m_face = NULL;
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}
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FT_Done_FreeType(m_library);
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//data will be deleted by CCImage
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// if (m_pData) {
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// delete [] m_pData;
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// }
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}
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void BitmapDC::reset()
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{
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m_iMaxLineWidth = 0;
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m_iMaxLineHeight = 0;
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m_vLines.clear();
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}
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void BitmapDC::buildLine( stringstream& ss, FT_Face face, int iCurXCursor, char cLastChar )
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{
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TextLine oTempLine;
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ss << '\0';
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oTempLine.sLineStr = ss.str();
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//get last glyph
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FT_Load_Glyph(face, FT_Get_Char_Index(face, cLastChar), FT_LOAD_DEFAULT);
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oTempLine.iLineWidth =
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iCurXCursor -
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RSHIFT6( face->glyph->metrics.horiAdvance +
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face->glyph->metrics.horiBearingX
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- face->glyph->metrics.width)/*-iInterval*/; //TODO interval
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m_iMaxLineWidth = MAX(m_iMaxLineWidth, oTempLine.iLineWidth);
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ss.clear();
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ss.str("");
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m_vLines.push_back(oTempLine);
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}
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bool BitmapDC::divideString( FT_Face face, const char* sText, int iMaxWidth, int iMaxHeight )
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{
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const char* pText = sText;
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int iError = 0;
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int iCurXCursor;
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iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
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if (iError) {
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return false;
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}
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iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
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//init stringstream
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stringstream ss;
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int cLastCh = 0;
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while (*pText != '\0') {
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if (*pText == '\n') {
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buildLine(ss, face, iCurXCursor, cLastCh);
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pText++;
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iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
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if (iError) {
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return false;
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}
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iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
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continue;
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}
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iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
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if (iError) {
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return false;
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//break;
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}
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//check its width
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//divide it when exceeding
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if ((iMaxWidth > 0 && iCurXCursor + RSHIFT6(face->glyph->metrics.width) > iMaxWidth)) {
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buildLine(ss, face , iCurXCursor, cLastCh);
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iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
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}
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cLastCh = *pText;
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ss << *pText;
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iCurXCursor += RSHIFT6(face->glyph->metrics.horiAdvance) + m_iInterval;
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pText++;
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/*
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if (cLastCh == ' ' || cLastCh == ',' || cLastCh == '.' || cLastCh == '!' || cLastCh == '?')
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{
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char *pText_temp = (char *)pText;
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int iCurXCursor_temp = 0;
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while((strlen(pText_temp) > 0) && (*pText_temp!=' ') && (*pText_temp !=',') && (*pText_temp != '.') && (*pText_temp != '!') && (*pText_temp != '?') && (*pText_temp != '/0') && (*pText_temp != '/n'))
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{
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iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText_temp), FT_LOAD_DEFAULT);
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if (iError) {
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return false;
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//break;
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}
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iCurXCursor_temp += SHIFT6(face->glyph->metrics.horiAdvance) + iInterval;
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if (iCurXCursor + iCurXCursor_temp > iMaxWidth && iMaxWidth > 0)
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{
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buildLine(ss, face , iCurXCursor, cLastCh);
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iCurXCursor = -SHIFT6(face->glyph->metrics.horiBearingX);
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}
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pText_temp++;
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}
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}
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*/
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}
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if (iError) {
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return false;
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}
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buildLine(ss,face, iCurXCursor, cLastCh);
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return true;
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}
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int BitmapDC::computeLineStart( FT_Face face, CCImage::ETextAlign eAlignMask, char cText, int iLineIndex )
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{
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int iRet;
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int iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, cText), FT_LOAD_DEFAULT);
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if (iError) {
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return -1;
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}
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if (eAlignMask == CCImage::kAlignCenter) {
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iRet = (m_iMaxLineWidth - m_vLines[iLineIndex].iLineWidth) / 2 - RSHIFT6(face->glyph->metrics.horiBearingX );
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} else if (eAlignMask == CCImage::kAlignRight) {
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iRet = (m_iMaxLineWidth - m_vLines[iLineIndex].iLineWidth) - RSHIFT6(face->glyph->metrics.horiBearingX );
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} else {
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// left or other situation
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iRet = -RSHIFT6(face->glyph->metrics.horiBearingX );
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}
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return iRet;
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}
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int BitmapDC::openFont(const string& fontName, uint fontSize)
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{
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FT_Face aFace ;
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int iError = 0 ;
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if( m_fontName != basename(fontName) || m_fontSize != fontSize ) {
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iError = FT_New_Face( m_library, fontName.c_str(), 0, &aFace );
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if( !iError ) {
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if(m_face) {
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FT_Done_Face(m_face);
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}
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m_face = aFace ;
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m_fontName = basename(fontName) ;
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m_fontSize = fontSize ;
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}
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}
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return iError ;
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}
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bool BitmapDC::getBitmap( const char *text, int nWidth, int nHeight, CCImage::ETextAlign eAlignMask, const char * pFontName, uint fontSize )
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{
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FT_Error iError;
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unsigned char cTemp ;
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int iY, iX, iTemp ;
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uint32 offset, rowOffset ;
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//data will be deleted by CCImage
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// if (m_pData) {
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// delete m_pData;
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// }
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int iCurXCursor, iCurYCursor;
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bool bRet = false;
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if (m_libError) {
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return false;
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}
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do {
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std::string fName = pFontName ;
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string ext = fileNameExtension(fName) ;
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if( ext.empty() || (ext != "ttf" && ext != "TTF") ) {
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fName += ".ttf" ;
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}
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if( !m_face || (m_fontName != basename(fName) || m_fontSize != fontSize) ) {
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iError = openFont( fName, fontSize );
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if (iError) { // try loading from "fonts" folder
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if( !startsWith(fName,"fonts/") ) {
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fName = string("fonts/") + fName ;
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}
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iError = openFont( fName, fontSize );
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if (iError) { //no valid font found, try to use default
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fName = "fonts/Marker Felt.ttf" ;
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//CCLog("No valid font, use default %s\n", fName.c_str());
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iError = openFont( fName, fontSize );
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}
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}
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CC_BREAK_IF(iError);
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//select utf8 charmap
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iError = FT_Select_Charmap(m_face,FT_ENCODING_UNICODE);
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CC_BREAK_IF(iError);
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iError = FT_Set_Pixel_Sizes(m_face, fontSize,fontSize);
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CC_BREAK_IF(iError);
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}
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iError = divideString(m_face, text, nWidth, nHeight) ? 0 : 1 ;
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//compute the final line width
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m_iMaxLineWidth = MAX(m_iMaxLineWidth, nWidth);
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FT_Pos ascenderPixels = RSHIFT6(m_face->size->metrics.ascender) ;
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FT_Pos descenderPixels = RSHIFT6(m_face->size->metrics.descender) ;
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m_iMaxLineHeight = ascenderPixels - descenderPixels;
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m_iMaxLineHeight *= m_vLines.size();
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//compute the final line height
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m_iMaxLineHeight = MAX(m_iMaxLineHeight, nHeight);
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uint bitmapSize = m_iMaxLineWidth * m_iMaxLineHeight*4 ;
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m_pData = new unsigned char[bitmapSize];
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memset(m_pData,0, bitmapSize);
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const char* pText = text;
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iCurYCursor = ascenderPixels;
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for (size_t i = 0; i < m_vLines.size(); i++) {
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pText = m_vLines[i].sLineStr.c_str();
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//initialize the origin cursor
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iCurXCursor = computeLineStart(m_face, eAlignMask, *pText, i);
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while (*pText != 0) {
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int iError = FT_Load_Glyph(m_face, FT_Get_Char_Index(m_face, *pText), FT_LOAD_RENDER);
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if (iError) {
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break;
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}
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// convert glyph to bitmap with 256 gray
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// and get the bitmap
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FT_Bitmap & bitmap = m_face->glyph->bitmap;
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FT_Pos horiBearingYPixels = RSHIFT6(m_face->glyph->metrics.horiBearingY) ;
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FT_Pos horiBearingXPixels = RSHIFT6(m_face->glyph->metrics.horiBearingX) ;
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FT_Pos horiAdvancePixels = RSHIFT6(m_face->glyph->metrics.horiAdvance) ;
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for (int i = 0; i < bitmap.rows; ++i) {
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iY = iCurYCursor + i - horiBearingYPixels;
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if (iY < 0 || iY>=m_iMaxLineHeight) {
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//exceed the height truncate
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continue;
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}
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rowOffset = iY * m_iMaxLineWidth ;
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// if it has gray>0 we set show it as 1, otherwise 0
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for (int j = 0; j < bitmap.width; ++j) {
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cTemp = bitmap.buffer[i * bitmap.width + j];
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if( cTemp )
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{
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iX = iCurXCursor + j + horiBearingXPixels;
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offset = (rowOffset + iX) * 4 ;
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IwAssert( GAME, ((offset + 3) < bitmapSize) ) ;
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iTemp = cTemp << 24 | cTemp << 16 | cTemp << 8 | cTemp;
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*(int*) &m_pData[ offset ] = iTemp ; // ARGB
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}
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}
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}
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//step to next glyph
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iCurXCursor += horiAdvancePixels + m_iInterval;
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pText++;
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}
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iCurYCursor += ascenderPixels - descenderPixels ;
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}
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//clear all lines
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m_vLines.clear();
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//success;
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if (iError) {
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bRet = false;
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} else
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bRet = true;
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}while(0);
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return bRet;
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}
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static BitmapDC& sharedBitmapDC()
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{
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static BitmapDC s_BmpDC;
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return s_BmpDC;
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}
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//////////////////////////////////////////////////////////////////////////
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// Implement CCImage
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//////////////////////////////////////////////////////////////////////////
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CCImage::CCImage()
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: m_nWidth(0)
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, m_nHeight(0)
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, m_nBitsPerComponent(0)
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, m_pData(0)
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, m_bHasAlpha(false)
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, m_bPreMulti(false)
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{
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}
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CCImage::~CCImage()
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{
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CC_SAFE_DELETE_ARRAY(m_pData);
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}
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bool CCImage::initWithImageFile(const char * strPath, EImageFormat eImgFmt/* = eFmtPng*/)
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{
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IW_CALLSTACK("UIImage::initWithImageFile");
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CCFileData data(CCFileUtils::fullPathFromRelativePath(strPath), "rb");
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return initWithImageData(data.getBuffer(), data.getSize(), eImgFmt);
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}
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bool CCImage::initWithImageFileThreadSafe( const char *fullpath, EImageFormat imageType /*= kFmtPng*/ )
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{
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CC_UNUSED_PARAM(imageType);
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CCFileData data(fullpath, "rb");
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return initWithImageData(data.getBuffer(), data.getSize(), imageType);
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}
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|
|
bool CCImage::initWithImageData(void * pData,
|
|
int nDataLen,
|
|
EImageFormat eFmt,
|
|
int nWidth,
|
|
int nHeight,
|
|
int nBitsPerComponent)
|
|
{
|
|
bool bRet = false;
|
|
do
|
|
{
|
|
CC_BREAK_IF(! pData || nDataLen <= 0);
|
|
|
|
if (kFmtPng == eFmt)
|
|
{
|
|
bRet = _initWithPngData(pData, nDataLen);
|
|
break;
|
|
}
|
|
else if (kFmtJpg == eFmt)
|
|
{
|
|
bRet = _initWithJpgData(pData, nDataLen);
|
|
break;
|
|
}
|
|
} while (0);
|
|
return bRet;
|
|
}
|
|
|
|
bool CCImage::_initWithJpgData(void * data, int nSize)
|
|
{
|
|
IW_CALLSTACK("CCImage::_initWithJpgData");
|
|
|
|
bool bRet = false;
|
|
|
|
s3eFile* pFile = s3eFileOpenFromMemory(data, nSize);
|
|
|
|
IwAssert(GAME, pFile);
|
|
|
|
jpeg_decompress_struct cinfo;
|
|
bzero(&cinfo, sizeof(cinfo));
|
|
|
|
JSAMPARRAY buffer; /* Output row buffer */
|
|
int row_stride; /* physical row width in output buffer */
|
|
|
|
jpeg_source_mgr srcmgr;
|
|
|
|
srcmgr.bytes_in_buffer = nSize;
|
|
srcmgr.next_input_byte = (JOCTET*) data;
|
|
srcmgr.init_source = CCImageHelper::JPEGInitSource;
|
|
srcmgr.fill_input_buffer = CCImageHelper::JPEGFillInputBuffer;
|
|
srcmgr.skip_input_data = CCImageHelper::JPEGSkipInputData;
|
|
srcmgr.resync_to_restart = jpeg_resync_to_restart;
|
|
srcmgr.term_source = CCImageHelper::JPEGTermSource;
|
|
|
|
jpeg_error_mgr jerr;
|
|
cinfo.err = jpeg_std_error(&jerr);
|
|
|
|
jpeg_create_decompress(&cinfo);
|
|
cinfo.src = &srcmgr;
|
|
|
|
jpeg_read_header(&cinfo, TRUE);
|
|
jpeg_start_decompress(&cinfo);
|
|
|
|
/* JSAMPLEs per row in output buffer */
|
|
row_stride = cinfo.output_width * cinfo.output_components;
|
|
|
|
/* Make a one-row-high sample array that will go away when done with image */
|
|
buffer = (*cinfo.mem->alloc_sarray)
|
|
((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
|
|
|
|
int copy_rows = (int)cinfo.output_height;
|
|
int copy_width = (int)cinfo.output_width;
|
|
|
|
if (copy_width < 0 || copy_rows < 0)
|
|
{
|
|
printf("jpeg is fully off screen\n");
|
|
return bRet;
|
|
}
|
|
int startx=0;
|
|
int starty=0;
|
|
int bytesPerPix = 4;
|
|
m_pData = new unsigned char[copy_rows * copy_width * bytesPerPix];
|
|
memset(m_pData,0, copy_rows * copy_width * bytesPerPix);
|
|
// init image info
|
|
m_bPreMulti = false;
|
|
m_bHasAlpha = false;
|
|
m_nHeight = copy_rows;
|
|
m_nWidth = copy_width;
|
|
m_nBitsPerComponent = bytesPerPix;
|
|
unsigned char *dst = m_pData;
|
|
unsigned char *pData = m_pData;
|
|
|
|
while (cinfo.output_scanline < cinfo.output_height)// count through the image
|
|
{
|
|
/* jpeg_read_scanlines expects an array of pointers to scanlines.
|
|
* Here the array is only one element long, but you could ask for
|
|
* more than one scanline at a time if that's more convenient.
|
|
*/
|
|
(void) jpeg_read_scanlines(&cinfo, buffer, 1);
|
|
|
|
if (starty-- <= 0)// count down from start
|
|
{
|
|
if (copy_rows-- > 0)
|
|
{
|
|
for (int xx=startx; xx < copy_width; xx++)
|
|
{
|
|
uint8 r = buffer[0][xx*3+0];
|
|
uint8 b = buffer[0][xx*3+1];
|
|
uint8 g = buffer[0][xx*3+2];
|
|
|
|
*dst++ = r;
|
|
*dst++ = b;
|
|
*dst++ = g;
|
|
*dst++ = 255;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
(void) jpeg_finish_decompress(&cinfo);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
|
|
printf("jpeg display done\n");
|
|
|
|
bRet = true;
|
|
return bRet;
|
|
}
|
|
|
|
void userReadData(png_structp pngPtr, png_bytep data, png_size_t length) {
|
|
png_voidp png_pointer = png_get_io_ptr(pngPtr);
|
|
s3eFileRead((char*)data, length, 1, (s3eFile*)png_pointer);
|
|
}
|
|
|
|
#define PNGSIGSIZE 8
|
|
bool CCImage::_initWithPngData(void * pData, int nDatalen)
|
|
{
|
|
IW_CALLSTACK("CCImage::_initWithPngData");
|
|
|
|
bool bRet = false;
|
|
|
|
s3eFile* pFile = s3eFileOpenFromMemory(pData, nDatalen);
|
|
|
|
IwAssert(GAME, pFile);
|
|
|
|
png_byte pngsig[PNGSIGSIZE];
|
|
|
|
bool is_png = false;
|
|
|
|
s3eFileRead((char*)pngsig, PNGSIGSIZE, 1, pFile);
|
|
|
|
is_png = png_sig_cmp(pngsig, 0, PNGSIGSIZE) == 0 ? true : false;
|
|
|
|
if (!is_png)
|
|
return false;
|
|
|
|
png_structp pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
|
|
if (!pngPtr)
|
|
return false;
|
|
|
|
png_infop infoPtr = png_create_info_struct(pngPtr);
|
|
|
|
if (!infoPtr)
|
|
return false;
|
|
|
|
png_bytep* rowPtrs = NULL;
|
|
m_pData = NULL;
|
|
|
|
if (setjmp(png_jmpbuf(pngPtr))) {
|
|
png_destroy_read_struct(&pngPtr, &infoPtr,(png_infopp)0);
|
|
if (rowPtrs != NULL) delete [] rowPtrs;
|
|
if (m_pData != NULL) delete [] m_pData;
|
|
|
|
CCLog("ERROR: An error occured while reading the PNG file");
|
|
|
|
return false;
|
|
}
|
|
|
|
png_set_read_fn(pngPtr, pFile, userReadData);
|
|
png_set_sig_bytes(pngPtr, PNGSIGSIZE);
|
|
png_read_info(pngPtr, infoPtr);
|
|
|
|
|
|
png_uint_32 bitdepth = png_get_bit_depth(pngPtr, infoPtr);
|
|
png_uint_32 channels = png_get_channels(pngPtr, infoPtr);
|
|
png_uint_32 color_type = png_get_color_type(pngPtr, infoPtr);
|
|
|
|
// Convert palette color to true color
|
|
if (color_type ==PNG_COLOR_TYPE_PALETTE)
|
|
png_set_palette_to_rgb(pngPtr);
|
|
|
|
// Convert low bit colors to 8 bit colors
|
|
if (png_get_bit_depth(pngPtr, infoPtr) < 8)
|
|
{
|
|
if (color_type==PNG_COLOR_TYPE_GRAY || color_type==PNG_COLOR_TYPE_GRAY_ALPHA)
|
|
png_set_gray_1_2_4_to_8(pngPtr);
|
|
else
|
|
png_set_packing(pngPtr);
|
|
}
|
|
|
|
if (png_get_valid(pngPtr, infoPtr, PNG_INFO_tRNS))
|
|
png_set_tRNS_to_alpha(pngPtr);
|
|
|
|
// Convert high bit colors to 8 bit colors
|
|
if (bitdepth == 16)
|
|
png_set_strip_16(pngPtr);
|
|
|
|
// Convert gray color to true color
|
|
if (color_type==PNG_COLOR_TYPE_GRAY || color_type==PNG_COLOR_TYPE_GRAY_ALPHA)
|
|
png_set_gray_to_rgb(pngPtr);
|
|
|
|
// Update the changes
|
|
png_read_update_info(pngPtr, infoPtr);
|
|
|
|
// init image info
|
|
m_bPreMulti = true;
|
|
|
|
unsigned int bytesPerComponent = png_get_channels(pngPtr, infoPtr);
|
|
|
|
m_bHasAlpha = (bytesPerComponent == 4 ? true : false);
|
|
|
|
m_nHeight = (unsigned int)png_get_image_height(pngPtr, infoPtr);
|
|
m_nWidth = (unsigned int) png_get_image_width(pngPtr, infoPtr);
|
|
|
|
m_nBitsPerComponent = (unsigned int)png_get_bit_depth(pngPtr, infoPtr);
|
|
|
|
m_pData = new unsigned char[m_nHeight * m_nWidth * bytesPerComponent];
|
|
|
|
unsigned int bytesPerRow = m_nWidth * bytesPerComponent;
|
|
|
|
{
|
|
unsigned char *ptr = m_pData;
|
|
rowPtrs = new png_bytep[m_nHeight];
|
|
|
|
for (int i = 0; i < m_nHeight; i++) {
|
|
|
|
int q = (i) * bytesPerRow;
|
|
|
|
rowPtrs[i] = (png_bytep)m_pData + q;
|
|
}
|
|
|
|
png_read_image(pngPtr, rowPtrs);
|
|
|
|
delete[] (png_bytep)rowPtrs;
|
|
png_destroy_read_struct(&pngPtr, &infoPtr,(png_infopp)0);
|
|
|
|
s3eFileClose(pFile);
|
|
pFile = 0;
|
|
}
|
|
|
|
// premultiplay if alpha
|
|
if(m_bHasAlpha)
|
|
for(unsigned int i = 0; i < m_nHeight*bytesPerRow; i += bytesPerComponent){
|
|
*(m_pData + i + 0) = (*(m_pData + i + 0) * *(m_pData + i + 3) + 1) >> 8;
|
|
*(m_pData + i + 1) = (*(m_pData + i + 1) * *(m_pData + i + 3) + 1) >> 8;
|
|
*(m_pData + i + 2) = (*(m_pData + i + 2) * *(m_pData + i + 3) + 1) >> 8;
|
|
*(m_pData + i + 3) = *(m_pData + i + 3);
|
|
}
|
|
|
|
|
|
|
|
bRet = true;
|
|
return bRet;
|
|
}
|
|
|
|
bool CCImage::initWithString(
|
|
const char * pText,
|
|
int nWidth/* = 0*/,
|
|
int nHeight/* = 0*/,
|
|
ETextAlign eAlignMask/* = kAlignCenter*/,
|
|
const char * pFontName/* = nil*/,
|
|
int nSize/* = 0*/)
|
|
{
|
|
bool bRet = false;
|
|
do
|
|
{
|
|
CC_BREAK_IF(! pText);
|
|
|
|
BitmapDC &dc = sharedBitmapDC();
|
|
|
|
const char* pFullFontName = CCFileUtils::fullPathFromRelativePath(pFontName);
|
|
|
|
CC_BREAK_IF(! dc.getBitmap(pText, nWidth, nHeight, eAlignMask, pFullFontName, nSize));
|
|
|
|
// assign the dc.m_pData to m_pData in order to save time
|
|
m_pData = dc.m_pData;
|
|
CC_BREAK_IF(! m_pData);
|
|
|
|
m_nWidth = (short)dc.m_iMaxLineWidth;
|
|
m_nHeight = (short)dc.m_iMaxLineHeight;
|
|
m_bHasAlpha = true;
|
|
m_bPreMulti = true;
|
|
m_nBitsPerComponent = 8;
|
|
|
|
bRet = true;
|
|
|
|
dc.reset();
|
|
}while (0);
|
|
|
|
//do nothing
|
|
return bRet;
|
|
}
|
|
|
|
bool CCImage::saveToFile(const char *pszFilePath, bool bIsToRGB)
|
|
{
|
|
// todo
|
|
return false;
|
|
}
|
|
|
|
bool CCImage::_initWithRawData(void * pData, int nDatalen, int nWidth, int nHeight, int nBitsPerComponent)
|
|
{
|
|
// todo
|
|
return false;
|
|
}
|
|
|
|
bool CCImage::_saveImageToPNG(const char * pszFilePath, bool bIsToRGB)
|
|
{
|
|
// todo
|
|
return false;
|
|
}
|
|
|
|
bool CCImage::_saveImageToJPG(const char * pszFilePath)
|
|
{
|
|
// todo
|
|
return false;
|
|
}
|
|
|
|
NS_CC_END;
|