/vcl/generic/glyphs/gcach_ftyp.cxx
C++ | 2571 lines | 1941 code | 384 blank | 246 comment | 433 complexity | 20cfbccff2371901b3f4bddefa495e77 MD5 | raw file
Possible License(s): GPL-3.0, LGPL-3.0, MPL-2.0-no-copyleft-exception, LGPL-2.1, BSD-3-Clause-No-Nuclear-License-2014
- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed
- * with this work for additional information regarding copyright
- * ownership. The ASF licenses this file to you under the Apache
- * License, Version 2.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
- #ifdef WNT
- #include <svsys.h>
- #undef CreateFont
- #endif
- #include "gcach_ftyp.hxx"
- #include "vcl/svapp.hxx"
- #include <outfont.hxx>
- #include <impfont.hxx>
- #ifdef ENABLE_GRAPHITE
- #include <graphite2/Font.h>
- #include <graphite_layout.hxx>
- #endif
- #include "tools/poly.hxx"
- #include "basegfx/matrix/b2dhommatrix.hxx"
- #include "basegfx/matrix/b2dhommatrixtools.hxx"
- #include "basegfx/polygon/b2dpolypolygon.hxx"
- #include "osl/file.hxx"
- #include "osl/thread.hxx"
- #include "langboost.hxx"
- #include "sft.hxx"
- #include <ft2build.h>
- #include FT_FREETYPE_H
- #include FT_GLYPH_H
- #include FT_OUTLINE_H
- #include FT_TRUETYPE_TABLES_H
- #include FT_TRUETYPE_TAGS_H
- #include FT_TRUETYPE_IDS_H
- #ifndef FT_RENDER_MODE_MONO // happens in the MACOSX build
- #define FT_RENDER_MODE_MONO ft_render_mode_mono
- #endif
- #include "rtl/instance.hxx"
- #ifndef FREETYPE_PATCH
- // VERSION_MINOR in freetype.h is too coarse
- // if patch-level is not available we need to fine-tune the version ourselves
- #define FTVERSION 2005
- #else
- #define FTVERSION (1000*FREETYPE_MAJOR + 100*FREETYPE_MINOR + FREETYPE_PATCH)
- #endif
- #if FTVERSION >= 2200
- typedef const FT_Vector* FT_Vector_CPtr;
- #else // FTVERSION < 2200
- typedef FT_Vector* FT_Vector_CPtr;
- #endif
- #include <vector>
- // TODO: move file mapping stuff to OSL
- #if defined(UNX)
- // PORTERS: dlfcn is used for getting symbols from FT versions newer than baseline
- #include <dlfcn.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <sys/stat.h>
- #include <sys/mman.h>
- #include "vcl/fontmanager.hxx"
- #elif defined(WNT)
- #include <io.h>
- #define strncasecmp strnicmp
- #endif
- typedef const unsigned char* CPU8;
- inline sal_uInt16 NEXT_U16( CPU8& p ) { p+=2; return (p[-2]<<8)|p[-1]; }
- inline sal_Int16 NEXT_S16( CPU8& p ) { return (sal_Int16)NEXT_U16(p); }
- inline sal_uInt32 NEXT_U32( CPU8& p ) { p+=4; return (p[-4]<<24)|(p[-3]<<16)|(p[-2]<<8)|p[-1]; }
- //inline sal_Int32 NEXT_S32( U8*& p ) { return (sal_Int32)NEXT_U32(p); }
- // -----------------------------------------------------------------------
- // the gamma table makes artificial bold look better for CJK glyphs
- static unsigned char aGammaTable[257];
- static void InitGammaTable()
- {
- static const int M_MAX = 255;
- static const int M_X = 128;
- static const int M_Y = 208;
- int x, a;
- for( x = 0; x < 256; x++)
- {
- if ( x <= M_X )
- a = ( x * M_Y + M_X / 2) / M_X;
- else
- a = M_Y + ( ( x - M_X ) * ( M_MAX - M_Y ) +
- ( M_MAX - M_X ) / 2 ) / ( M_MAX - M_X );
- aGammaTable[x] = (unsigned char)a;
- }
- }
- // -----------------------------------------------------------------------
- static FT_Library aLibFT = 0;
- // #110607# enable linking with old FT versions
- static int nFTVERSION = 0;
- static FT_Error (*pFTNewSize)(FT_Face,FT_Size*);
- static FT_Error (*pFTActivateSize)(FT_Size);
- static FT_Error (*pFTDoneSize)(FT_Size);
- FT_Error (*pFTEmbolden)(FT_GlyphSlot);
- FT_Error (*pFTOblique)(FT_GlyphSlot);
- static bool bEnableSizeFT = false;
- struct EqStr{ bool operator()(const char* a, const char* b) const { return !strcmp(a,b); } };
- struct HashStr { size_t operator()( const char* s ) const { return rtl_str_hashCode(s); } };
- typedef ::boost::unordered_map<const char*,boost::shared_ptr<FtFontFile>,HashStr, EqStr> FontFileList;
- namespace { struct vclFontFileList : public rtl::Static< FontFileList, vclFontFileList > {}; }
- // -----------------------------------------------------------------------
- // TODO: remove when the priorities are selected by UI
- // if (AH==0) => disable autohinting
- // if (AA==0) => disable antialiasing
- // if (EB==0) => disable embedded bitmaps
- // if (AA prio <= AH prio) => antialias + autohint
- // if (AH<AA) => do not autohint when antialiasing
- // if (EB<AH) => do not autohint for monochrome
- static int nDefaultPrioEmbedded = 2;
- static int nDefaultPrioAutoHint = 1;
- static int nDefaultPrioAntiAlias = 1;
- // =======================================================================
- // FreetypeManager
- // =======================================================================
- FtFontFile::FtFontFile( const ::rtl::OString& rNativeFileName )
- : maNativeFileName( rNativeFileName ),
- mpFileMap( NULL ),
- mnFileSize( 0 ),
- mnRefCount( 0 ),
- mnLangBoost( 0 )
- {
- // boost font preference if UI language is mentioned in filename
- int nPos = maNativeFileName.lastIndexOf( '_' );
- if( nPos == -1 || maNativeFileName[nPos+1] == '.' )
- mnLangBoost += 0x1000; // no langinfo => good
- else
- {
- static const char* pLangBoost = NULL;
- static bool bOnce = true;
- if( bOnce )
- {
- bOnce = false;
- pLangBoost = vcl::getLangBoost();
- }
- if( pLangBoost && !strncasecmp( pLangBoost, &maNativeFileName.getStr()[nPos+1], 3 ) )
- mnLangBoost += 0x2000; // matching langinfo => better
- }
- }
- // -----------------------------------------------------------------------
- FtFontFile* FtFontFile::FindFontFile( const ::rtl::OString& rNativeFileName )
- {
- // font file already known? (e.g. for ttc, synthetic, aliased fonts)
- const char* pFileName = rNativeFileName.getStr();
- FontFileList &rFontFileList = vclFontFileList::get();
- FontFileList::const_iterator it = rFontFileList.find( pFileName );
- if( it != rFontFileList.end() )
- return it->second.get();
- // no => create new one
- FtFontFile* pFontFile = new FtFontFile( rNativeFileName );
- pFileName = pFontFile->maNativeFileName.getStr();
- rFontFileList[pFileName].reset(pFontFile);
- return pFontFile;
- }
- // -----------------------------------------------------------------------
- bool FtFontFile::Map()
- {
- if( mnRefCount++ <= 0 )
- {
- const char* pFileName = maNativeFileName.getStr();
- #if defined(UNX)
- int nFile = open( pFileName, O_RDONLY );
- if( nFile < 0 )
- return false;
- struct stat aStat;
- fstat( nFile, &aStat );
- mnFileSize = aStat.st_size;
- mpFileMap = (const unsigned char*)
- mmap( NULL, mnFileSize, PROT_READ, MAP_SHARED, nFile, 0 );
- if( mpFileMap == MAP_FAILED )
- mpFileMap = NULL;
- close( nFile );
- #elif defined(WNT)
- void* pFileDesc = ::CreateFile( pFileName, GENERIC_READ, FILE_SHARE_READ,
- NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 );
- if( pFileDesc == INVALID_HANDLE_VALUE)
- return false;
- mnFileSize = ::GetFileSize( pFileDesc, NULL );
- HANDLE aHandle = ::CreateFileMapping( pFileDesc, NULL, PAGE_READONLY, 0, mnFileSize, "TTF" );
- mpFileMap = (const unsigned char*)::MapViewOfFile( aHandle, FILE_MAP_READ, 0, 0, mnFileSize );
- ::CloseHandle( pFileDesc );
- #else
- FILE* pFile = fopen( pFileName, "rb" );
- if( !pFile )
- return false;
- struct stat aStat;
- stat( pFileName, &aStat );
- mnFileSize = aStat.st_size;
- mpFileMap = new unsigned char[ mnFileSize ];
- if( mnFileSize != fread( mpFileMap, 1, mnFileSize, pFile ) )
- {
- delete[] mpFileMap;
- mpFileMap = NULL;
- }
- fclose( pFile );
- #endif
- }
- return (mpFileMap != NULL);
- }
- // -----------------------------------------------------------------------
- void FtFontFile::Unmap()
- {
- if( (--mnRefCount > 0) || (mpFileMap == NULL) )
- return;
- #if defined(UNX)
- munmap( (char*)mpFileMap, mnFileSize );
- #elif defined(WNT)
- UnmapViewOfFile( (LPCVOID)mpFileMap );
- #else
- delete[] mpFileMap;
- #endif
- mpFileMap = NULL;
- }
- #ifdef ENABLE_GRAPHITE
- // wrap FtFontInfo's table function
- const void * graphiteFontTable(const void* appFaceHandle, unsigned int name, size_t *len)
- {
- const FtFontInfo * pFontInfo = reinterpret_cast<const FtFontInfo*>(appFaceHandle);
- typedef union {
- char m_c[5];
- unsigned int m_id;
- } TableId;
- TableId tableId;
- tableId.m_id = name;
- #ifndef WORDS_BIGENDIAN
- TableId swapped;
- swapped.m_c[3] = tableId.m_c[0];
- swapped.m_c[2] = tableId.m_c[1];
- swapped.m_c[1] = tableId.m_c[2];
- swapped.m_c[0] = tableId.m_c[3];
- tableId.m_id = swapped.m_id;
- #endif
- tableId.m_c[4] = '\0';
- sal_uLong nLength = 0;
- const void * pTable = static_cast<const void*>(pFontInfo->GetTable(tableId.m_c, &nLength));
- if (len) *len = static_cast<size_t>(nLength);
- return pTable;
- }
- #endif
- // =======================================================================
- FtFontInfo::FtFontInfo( const ImplDevFontAttributes& rDevFontAttributes,
- const ::rtl::OString& rNativeFileName, int nFaceNum, sal_IntPtr nFontId, int nSynthetic,
- const ExtraKernInfo* pExtraKernInfo )
- :
- maFaceFT( NULL ),
- mpFontFile( FtFontFile::FindFontFile( rNativeFileName ) ),
- mnFaceNum( nFaceNum ),
- mnRefCount( 0 ),
- mnSynthetic( nSynthetic ),
- #ifdef ENABLE_GRAPHITE
- mbCheckedGraphite(false),
- mpGraphiteFace(NULL),
- #endif
- mnFontId( nFontId ),
- maDevFontAttributes( rDevFontAttributes ),
- mpFontCharMap( NULL ),
- mpChar2Glyph( NULL ),
- mpGlyph2Char( NULL ),
- mpExtraKernInfo( pExtraKernInfo )
- {
- // prefer font with low ID
- maDevFontAttributes.mnQuality += 10000 - nFontId;
- // prefer font with matching file names
- maDevFontAttributes.mnQuality += mpFontFile->GetLangBoost();
- // prefer font with more external info
- if( pExtraKernInfo )
- maDevFontAttributes.mnQuality += 100;
- }
- // -----------------------------------------------------------------------
- FtFontInfo::~FtFontInfo()
- {
- if( mpFontCharMap )
- mpFontCharMap->DeReference();
- delete mpExtraKernInfo;
- delete mpChar2Glyph;
- delete mpGlyph2Char;
- #ifdef ENABLE_GRAPHITE
- delete mpGraphiteFace;
- #endif
- }
- void FtFontInfo::InitHashes() const
- {
- // TODO: avoid pointers when empty stl::hash_* objects become cheap
- mpChar2Glyph = new Int2IntMap();
- mpGlyph2Char = new Int2IntMap();
- }
- // -----------------------------------------------------------------------
- FT_FaceRec_* FtFontInfo::GetFaceFT()
- {
- // get faceFT once/multiple depending on availability of SizeFT APIs
- if( (mnRefCount++ <= 0) || !bEnableSizeFT )
- {
- if( !mpFontFile->Map() )
- return NULL;
- FT_Error rc = FT_New_Memory_Face( aLibFT,
- (FT_Byte*)mpFontFile->GetBuffer(),
- mpFontFile->GetFileSize(), mnFaceNum, &maFaceFT );
- if( (rc != FT_Err_Ok) || (maFaceFT->num_glyphs <= 0) )
- maFaceFT = NULL;
- }
- return maFaceFT;
- }
- #ifdef ENABLE_GRAPHITE
- GraphiteFaceWrapper * FtFontInfo::GetGraphiteFace()
- {
- if (mbCheckedGraphite)
- return mpGraphiteFace;
- // test for graphite here so that it is cached most efficiently
- if (GetTable("Silf", 0))
- {
- int graphiteSegCacheSize = 10000;
- static const char* pGraphiteCacheStr = getenv( "SAL_GRAPHITE_CACHE_SIZE" );
- graphiteSegCacheSize = pGraphiteCacheStr ? (atoi(pGraphiteCacheStr)) : 0;
- gr_face * pGraphiteFace;
- if (graphiteSegCacheSize > 500)
- pGraphiteFace = gr_make_face_with_seg_cache(this, graphiteFontTable, graphiteSegCacheSize, gr_face_cacheCmap);
- else
- pGraphiteFace = gr_make_face(this, graphiteFontTable, gr_face_cacheCmap);
- if (pGraphiteFace)
- mpGraphiteFace = new GraphiteFaceWrapper(pGraphiteFace);
- }
- mbCheckedGraphite = true;
- return mpGraphiteFace;
- }
- #endif
- // -----------------------------------------------------------------------
- void FtFontInfo::ReleaseFaceFT( FT_FaceRec_* pFaceFT )
- {
- // release last/each depending on SizeFT availability
- if( (--mnRefCount <= 0) || !bEnableSizeFT )
- {
- FT_Done_Face( pFaceFT );
- maFaceFT = NULL;
- mpFontFile->Unmap();
- }
- }
- // -----------------------------------------------------------------------
- bool FtFontInfo::HasExtraKerning() const
- {
- if( !mpExtraKernInfo )
- return false;
- // TODO: how to enable the line below without getting #i29881# back?
- // on the other hand being too optimistic doesn't cause problems
- // return mpExtraKernInfo->HasKernPairs();
- return true;
- }
- // -----------------------------------------------------------------------
- int FtFontInfo::GetExtraKernPairs( ImplKernPairData** ppKernPairs ) const
- {
- if( !mpExtraKernInfo )
- return 0;
- return mpExtraKernInfo->GetUnscaledKernPairs( ppKernPairs );
- }
- // -----------------------------------------------------------------------
- static unsigned GetUInt( const unsigned char* p ) { return((p[0]<<24)+(p[1]<<16)+(p[2]<<8)+p[3]);}
- static unsigned GetUShort( const unsigned char* p ){ return((p[0]<<8)+p[1]);}
- //static signed GetSShort( const unsigned char* p ){ return((short)((p[0]<<8)+p[1]));}
- static const sal_uInt32 T_true = 0x74727565; /* 'true' */
- static const sal_uInt32 T_ttcf = 0x74746366; /* 'ttcf' */
- static const sal_uInt32 T_otto = 0x4f54544f; /* 'OTTO' */
- const unsigned char* FtFontInfo::GetTable( const char* pTag, sal_uLong* pLength ) const
- {
- const unsigned char* pBuffer = mpFontFile->GetBuffer();
- int nFileSize = mpFontFile->GetFileSize();
- if( !pBuffer || nFileSize<1024 )
- return NULL;
- // we currently handle TTF, TTC and OTF headers
- unsigned nFormat = GetUInt( pBuffer );
- const unsigned char* p = pBuffer + 12;
- if( nFormat == T_ttcf ) // TTC_MAGIC
- p += GetUInt( p + 4 * mnFaceNum );
- else if( nFormat != 0x00010000 && nFormat != T_true && nFormat != T_otto) // TTF_MAGIC and Apple TTF Magic and PS-OpenType font
- return NULL;
- // walk table directory until match
- int nTables = GetUShort( p - 8 );
- if( nTables >= 64 ) // something fishy?
- return NULL;
- for( int i = 0; i < nTables; ++i, p+=16 )
- {
- if( p[0]==pTag[0] && p[1]==pTag[1] && p[2]==pTag[2] && p[3]==pTag[3] )
- {
- sal_uLong nLength = GetUInt( p + 12 );
- if( pLength != NULL )
- *pLength = nLength;
- const unsigned char* pTable = pBuffer + GetUInt( p + 8 );
- if( (pTable + nLength) <= (mpFontFile->GetBuffer() + nFileSize) )
- return pTable;
- }
- }
- return NULL;
- }
- // -----------------------------------------------------------------------
- void FtFontInfo::AnnounceFont( ImplDevFontList* pFontList )
- {
- ImplFTSFontData* pFD = new ImplFTSFontData( this, maDevFontAttributes );
- pFontList->Add( pFD );
- }
- // =======================================================================
- FreetypeManager::FreetypeManager()
- : mnMaxFontId( 0 )
- {
- /*FT_Error rcFT =*/ FT_Init_FreeType( &aLibFT );
- #ifdef RTLD_DEFAULT // true if a good dlfcn.h header was included
- // Get version of freetype library to enable workarounds.
- // Freetype <= 2.0.9 does not have FT_Library_Version().
- // Using dl_sym() instead of osl_getSymbol() because latter
- // isn't designed to work with oslModule=NULL
- void (*pFTLibraryVersion)(FT_Library library,
- FT_Int *amajor, FT_Int *aminor, FT_Int *apatch);
- pFTLibraryVersion = (void (*)(FT_Library library,
- FT_Int *amajor, FT_Int *aminor, FT_Int *apatch))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_Library_Version" );
- pFTNewSize = (FT_Error(*)(FT_Face,FT_Size*))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_New_Size" );
- pFTActivateSize = (FT_Error(*)(FT_Size))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_Activate_Size" );
- pFTDoneSize = (FT_Error(*)(FT_Size))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_Done_Size" );
- pFTEmbolden = (FT_Error(*)(FT_GlyphSlot))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_GlyphSlot_Embolden" );
- pFTOblique = (FT_Error(*)(FT_GlyphSlot))(sal_IntPtr)dlsym( RTLD_DEFAULT, "FT_GlyphSlot_Oblique" );
- bEnableSizeFT = (pFTNewSize!=NULL) && (pFTActivateSize!=NULL) && (pFTDoneSize!=NULL);
- FT_Int nMajor = 0, nMinor = 0, nPatch = 0;
- if( pFTLibraryVersion )
- pFTLibraryVersion( aLibFT, &nMajor, &nMinor, &nPatch );
- nFTVERSION = nMajor * 1000 + nMinor * 100 + nPatch;
- // disable embedded bitmaps for Freetype-2.1.3 unless explicitly
- // requested by env var below because it crashes StarOffice on RH9
- // reason: double free in freetype's embedded bitmap handling
- if( nFTVERSION == 2103 )
- nDefaultPrioEmbedded = 0;
- // disable artificial emboldening with the Freetype API for older versions
- if( nFTVERSION < 2110 )
- pFTEmbolden = NULL;
- #else // RTLD_DEFAULT
- // assume systems where dlsym is not possible use supplied library
- nFTVERSION = FTVERSION;
- #endif
- // TODO: remove when the priorities are selected by UI
- char* pEnv;
- pEnv = ::getenv( "SAL_EMBEDDED_BITMAP_PRIORITY" );
- if( pEnv )
- nDefaultPrioEmbedded = pEnv[0] - '0';
- pEnv = ::getenv( "SAL_ANTIALIASED_TEXT_PRIORITY" );
- if( pEnv )
- nDefaultPrioAntiAlias = pEnv[0] - '0';
- pEnv = ::getenv( "SAL_AUTOHINTING_PRIORITY" );
- if( pEnv )
- nDefaultPrioAutoHint = pEnv[0] - '0';
- InitGammaTable();
- vclFontFileList::get();
- }
- // -----------------------------------------------------------------------
- FT_Face ServerFont::GetFtFace() const
- {
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- return maFaceFT;
- }
- // -----------------------------------------------------------------------
- FreetypeManager::~FreetypeManager()
- {
- ClearFontList();
- }
- // -----------------------------------------------------------------------
- void FreetypeManager::AddFontFile( const rtl::OString& rNormalizedName,
- int nFaceNum, sal_IntPtr nFontId, const ImplDevFontAttributes& rDevFontAttr,
- const ExtraKernInfo* pExtraKernInfo )
- {
- if( rNormalizedName.isEmpty() )
- return;
- if( maFontList.find( nFontId ) != maFontList.end() )
- return;
- FtFontInfo* pFontInfo = new FtFontInfo( rDevFontAttr,
- rNormalizedName, nFaceNum, nFontId, 0, pExtraKernInfo );
- maFontList[ nFontId ] = pFontInfo;
- if( mnMaxFontId < nFontId )
- mnMaxFontId = nFontId;
- }
- // -----------------------------------------------------------------------
- void FreetypeManager::AnnounceFonts( ImplDevFontList* pToAdd ) const
- {
- for( FontList::const_iterator it = maFontList.begin(); it != maFontList.end(); ++it )
- {
- FtFontInfo* pFtFontInfo = it->second;
- pFtFontInfo->AnnounceFont( pToAdd );
- }
- }
- // -----------------------------------------------------------------------
- void FreetypeManager::ClearFontList( )
- {
- for( FontList::iterator it = maFontList.begin(); it != maFontList.end(); ++it )
- {
- FtFontInfo* pFtFontInfo = it->second;
- delete pFtFontInfo;
- }
- maFontList.clear();
- }
- // -----------------------------------------------------------------------
- ServerFont* FreetypeManager::CreateFont( const FontSelectPattern& rFSD )
- {
- FtFontInfo* pFontInfo = NULL;
- // find a FontInfo matching to the font id
- sal_IntPtr nFontId = reinterpret_cast<sal_IntPtr>( rFSD.mpFontData );
- FontList::iterator it = maFontList.find( nFontId );
- if( it != maFontList.end() )
- pFontInfo = it->second;
- if( !pFontInfo )
- return NULL;
- ServerFont* pNew = new ServerFont( rFSD, pFontInfo );
- return pNew;
- }
- // =======================================================================
- ImplFTSFontData::ImplFTSFontData( FtFontInfo* pFI, const ImplDevFontAttributes& rDFA )
- : PhysicalFontFace( rDFA, IFTSFONT_MAGIC ),
- mpFtFontInfo( pFI )
- {
- mbDevice = false;
- mbOrientation = true;
- }
- // -----------------------------------------------------------------------
- ImplFontEntry* ImplFTSFontData::CreateFontInstance( FontSelectPattern& rFSD ) const
- {
- ImplServerFontEntry* pEntry = new ImplServerFontEntry( rFSD );
- return pEntry;
- }
- // =======================================================================
- // ServerFont
- // =======================================================================
- ServerFont::ServerFont( const FontSelectPattern& rFSD, FtFontInfo* pFI )
- : maGlyphList( 0),
- maFontSelData(rFSD),
- mnExtInfo(0),
- mnRefCount(1),
- mnBytesUsed( sizeof(ServerFont) ),
- mpPrevGCFont( NULL ),
- mpNextGCFont( NULL ),
- mnCos( 0x10000),
- mnSin( 0 ),
- mnZWJ( 0 ),
- mnZWNJ( 0 ),
- mbCollectedZW( false ),
- mnPrioEmbedded(nDefaultPrioEmbedded),
- mnPrioAntiAlias(nDefaultPrioAntiAlias),
- mnPrioAutoHint(nDefaultPrioAutoHint),
- mpFontInfo( pFI ),
- maFaceFT( NULL ),
- maSizeFT( NULL ),
- mbFaceOk( false ),
- maRecodeConverter( NULL ),
- mpLayoutEngine( NULL )
- {
- // TODO: move update of mpFontEntry into FontEntry class when
- // it becomes reponsible for the ServerFont instantiation
- ((ImplServerFontEntry*)rFSD.mpFontEntry)->SetServerFont( this );
- if( rFSD.mnOrientation != 0 )
- {
- const double dRad = rFSD.mnOrientation * ( F_2PI / 3600.0 );
- mnCos = static_cast<long>( 0x10000 * cos( dRad ) + 0.5 );
- mnSin = static_cast<long>( 0x10000 * sin( dRad ) + 0.5 );
- }
- maFaceFT = pFI->GetFaceFT();
- if( !maFaceFT )
- return;
- // set the pixel size of the font instance
- mnWidth = rFSD.mnWidth;
- if( !mnWidth )
- mnWidth = rFSD.mnHeight;
- mfStretch = (double)mnWidth / rFSD.mnHeight;
- // sanity check (e.g. #i66394#, #i66244#, #66537#)
- if( (mnWidth < 0) || (mfStretch > +64.0) || (mfStretch < -64.0) )
- return;
- // perf: use maSizeFT if available
- if( bEnableSizeFT )
- {
- pFTNewSize( maFaceFT, &maSizeFT );
- pFTActivateSize( maSizeFT );
- }
- FT_Error rc = FT_Set_Pixel_Sizes( maFaceFT, mnWidth, rFSD.mnHeight );
- if( rc != FT_Err_Ok )
- return;
- // prepare for font encodings other than unicode or symbol
- FT_Encoding eEncoding = FT_ENCODING_UNICODE;
- if( mpFontInfo->IsSymbolFont() )
- {
- #if (FTVERSION < 2000)
- eEncoding = FT_ENCODING_NONE;
- #else
- if( FT_IS_SFNT( maFaceFT ) )
- eEncoding = ft_encoding_symbol;
- else
- eEncoding = FT_ENCODING_ADOBE_CUSTOM; // freetype wants this for PS symbol fonts
- #endif
- }
- rc = FT_Select_Charmap( maFaceFT, eEncoding );
- // no standard encoding applies => we need an encoding converter
- if( rc != FT_Err_Ok )
- {
- rtl_TextEncoding eRecodeFrom = RTL_TEXTENCODING_UNICODE;
- for( int i = maFaceFT->num_charmaps; --i >= 0; )
- {
- const FT_CharMap aCM = maFaceFT->charmaps[i];
- if( aCM->platform_id == TT_PLATFORM_MICROSOFT )
- {
- switch( aCM->encoding_id )
- {
- case TT_MS_ID_SJIS:
- eEncoding = FT_ENCODING_SJIS;
- eRecodeFrom = RTL_TEXTENCODING_SHIFT_JIS;
- break;
- case TT_MS_ID_GB2312:
- eEncoding = FT_ENCODING_GB2312;
- eRecodeFrom = RTL_TEXTENCODING_GB_2312;
- break;
- case TT_MS_ID_BIG_5:
- eEncoding = FT_ENCODING_BIG5;
- eRecodeFrom = RTL_TEXTENCODING_BIG5;
- break;
- case TT_MS_ID_WANSUNG:
- eEncoding = FT_ENCODING_WANSUNG;
- eRecodeFrom = RTL_TEXTENCODING_MS_949;
- break;
- case TT_MS_ID_JOHAB:
- eEncoding = FT_ENCODING_JOHAB;
- eRecodeFrom = RTL_TEXTENCODING_MS_1361;
- break;
- }
- }
- else if( aCM->platform_id == TT_PLATFORM_MACINTOSH )
- {
- switch( aCM->encoding_id )
- {
- case TT_MAC_ID_ROMAN:
- eEncoding = FT_ENCODING_APPLE_ROMAN;
- eRecodeFrom = RTL_TEXTENCODING_UNICODE; // TODO: use better match
- break;
- // TODO: add other encodings when Mac-only
- // non-unicode fonts show up
- }
- }
- else if( aCM->platform_id == TT_PLATFORM_ADOBE )
- {
- switch( aCM->encoding_id )
- {
- #ifdef TT_ADOBE_ID_LATIN1
- case TT_ADOBE_ID_LATIN1: // better unicode than nothing
- eEncoding = FT_ENCODING_ADOBE_LATIN_1;
- eRecodeFrom = RTL_TEXTENCODING_ISO_8859_1;
- break;
- #endif // TT_ADOBE_ID_LATIN1
- case TT_ADOBE_ID_STANDARD: // better unicode than nothing
- eEncoding = FT_ENCODING_ADOBE_STANDARD;
- eRecodeFrom = RTL_TEXTENCODING_UNICODE; // TODO: use better match
- break;
- }
- }
- }
- if( FT_Err_Ok != FT_Select_Charmap( maFaceFT, eEncoding ) )
- return;
- if( eRecodeFrom != RTL_TEXTENCODING_UNICODE )
- maRecodeConverter = rtl_createUnicodeToTextConverter( eRecodeFrom );
- }
- mbFaceOk = true;
- ApplyGSUB( rFSD );
- // TODO: query GASP table for load flags
- mnLoadFlags = FT_LOAD_DEFAULT;
- #if 1 // #i97326# cairo sometimes uses FT_Set_Transform() on our FT_FACE
- // we are not using FT_Set_Transform() yet, so just ignore it for now
- mnLoadFlags |= FT_LOAD_IGNORE_TRANSFORM;
- #endif
- mbArtItalic = (rFSD.meItalic != ITALIC_NONE && pFI->GetFontAttributes().GetSlant() == ITALIC_NONE);
- mbArtBold = (rFSD.meWeight > WEIGHT_MEDIUM && pFI->GetFontAttributes().GetWeight() <= WEIGHT_MEDIUM);
- mbUseGamma = false;
- if( mbArtBold )
- {
- //static const int TT_CODEPAGE_RANGE_874 = (1L << 16); // Thai
- //static const int TT_CODEPAGE_RANGE_932 = (1L << 17); // JIS/Japan
- //static const int TT_CODEPAGE_RANGE_936 = (1L << 18); // Chinese: Simplified
- //static const int TT_CODEPAGE_RANGE_949 = (1L << 19); // Korean Wansung
- //static const int TT_CODEPAGE_RANGE_950 = (1L << 20); // Chinese: Traditional
- //static const int TT_CODEPAGE_RANGE_1361 = (1L << 21); // Korean Johab
- static const int TT_CODEPAGE_RANGES1_CJKT = 0x3F0000; // all of the above
- const TT_OS2* pOs2 = (const TT_OS2*)FT_Get_Sfnt_Table( maFaceFT, ft_sfnt_os2 );
- if ((pOs2) && (pOs2->ulCodePageRange1 & TT_CODEPAGE_RANGES1_CJKT )
- && rFSD.mnHeight < 20)
- mbUseGamma = true;
- }
- if( ((mnCos != 0) && (mnSin != 0)) || (mnPrioEmbedded <= 0) )
- mnLoadFlags |= FT_LOAD_NO_BITMAP;
- }
- void ServerFont::SetFontOptions( boost::shared_ptr<ImplFontOptions> pFontOptions)
- {
- mpFontOptions = pFontOptions;
- if (!mpFontOptions)
- return;
- FontAutoHint eHint = mpFontOptions->GetUseAutoHint();
- if( eHint == AUTOHINT_DONTKNOW )
- eHint = mbUseGamma ? AUTOHINT_TRUE : AUTOHINT_FALSE;
- if( eHint == AUTOHINT_TRUE )
- mnLoadFlags |= FT_LOAD_FORCE_AUTOHINT;
- if( (mnSin != 0) && (mnCos != 0) ) // hinting for 0/90/180/270 degrees only
- mnLoadFlags |= FT_LOAD_NO_HINTING;
- mnLoadFlags |= FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH; //#88334#
- if( mpFontOptions->DontUseAntiAlias() )
- mnPrioAntiAlias = 0;
- if( mpFontOptions->DontUseEmbeddedBitmaps() )
- mnPrioEmbedded = 0;
- if( mpFontOptions->DontUseHinting() )
- mnPrioAutoHint = 0;
- #if (FTVERSION >= 2005) || defined(TT_CONFIG_OPTION_BYTECODE_INTERPRETER)
- if( mnPrioAutoHint <= 0 )
- #endif
- mnLoadFlags |= FT_LOAD_NO_HINTING;
- #if defined(FT_LOAD_TARGET_LIGHT) && defined(FT_LOAD_TARGET_NORMAL)
- if( !(mnLoadFlags & FT_LOAD_NO_HINTING) && (nFTVERSION >= 2103))
- {
- mnLoadFlags |= FT_LOAD_TARGET_NORMAL;
- switch( mpFontOptions->GetHintStyle() )
- {
- case HINT_NONE:
- mnLoadFlags |= FT_LOAD_NO_HINTING;
- break;
- case HINT_SLIGHT:
- mnLoadFlags |= FT_LOAD_TARGET_LIGHT;
- break;
- case HINT_MEDIUM:
- break;
- case HINT_FULL:
- default:
- break;
- }
- }
- #endif
- if( mnPrioEmbedded <= 0 )
- mnLoadFlags |= FT_LOAD_NO_BITMAP;
- }
- boost::shared_ptr<ImplFontOptions> ServerFont::GetFontOptions() const
- {
- return mpFontOptions;
- }
- const ::rtl::OString* ServerFont::GetFontFileName() const
- {
- return mpFontInfo->GetFontFileName();
- }
- bool ServerFont::TestFont() const
- {
- return mbFaceOk;
- }
- // -----------------------------------------------------------------------
- ServerFont::~ServerFont()
- {
- if( mpLayoutEngine )
- delete mpLayoutEngine;
- if( maRecodeConverter )
- rtl_destroyUnicodeToTextConverter( maRecodeConverter );
- if( maSizeFT )
- pFTDoneSize( maSizeFT );
- mpFontInfo->ReleaseFaceFT( maFaceFT );
- ReleaseFromGarbageCollect();
- }
- // -----------------------------------------------------------------------
- int ServerFont::GetEmUnits() const
- {
- return maFaceFT->units_per_EM;
- }
- // -----------------------------------------------------------------------
- void ServerFont::FetchFontMetric( ImplFontMetricData& rTo, long& rFactor ) const
- {
- const int UNDETERMINED = 0xFEED;
- static int nUseNewLineHeight = UNDETERMINED;
- if (nUseNewLineHeight == UNDETERMINED)
- {
- osl::MutexGuard aGuard( osl::Mutex::getGlobalMutex());
- if (nUseNewLineHeight == UNDETERMINED)
- {
- const char* pEnv = getenv( "SAL_USE_NEW_LINEHEIGHT");
- nUseNewLineHeight = (pEnv ? atoi(pEnv) : 0);
- }
- }
- static_cast<ImplFontAttributes&>(rTo) = mpFontInfo->GetFontAttributes();
- rTo.mbScalableFont = true;
- rTo.mbDevice = true;
- rTo.mbKernableFont = (FT_HAS_KERNING( maFaceFT ) != 0) || mpFontInfo->HasExtraKerning();
- rTo.mnOrientation = GetFontSelData().mnOrientation;
- //Always consider [star]symbol as symbol fonts
- if (
- (rTo.GetFamilyName().EqualsAscii("OpenSymbol")) ||
- (rTo.GetFamilyName().EqualsAscii("StarSymbol"))
- )
- {
- rTo.mbSymbolFlag = true;
- }
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- rFactor = 0x100;
- rTo.mnWidth = mnWidth;
- const FT_Size_Metrics& rMetrics = maFaceFT->size->metrics;
- rTo.mnAscent = (+rMetrics.ascender + 32) >> 6;
- rTo.mnDescent = (-rMetrics.descender + 32) >> 6;
- if (nUseNewLineHeight)
- {
- rTo.mnExtLeading = ((rMetrics.height + 32) >> 6) - (rTo.mnAscent + rTo.mnDescent);
- rTo.mnIntLeading = (rTo.mnAscent + rTo.mnDescent) - ((maFaceFT->units_per_EM + 32) >> 6);
- }
- else
- {
- rTo.mnIntLeading = ((rMetrics.height + 32) >> 6) - (rTo.mnAscent + rTo.mnDescent);
- }
- rTo.mnSlant = 0;
- const TT_OS2* pOS2 = (const TT_OS2*)FT_Get_Sfnt_Table( maFaceFT, ft_sfnt_os2 );
- if( pOS2 && (pOS2->version != 0xFFFF) )
- {
- // map the panose info from the OS2 table to their VCL counterparts
- switch( pOS2->panose[0] )
- {
- case 1: rTo.meFamily = FAMILY_ROMAN; break;
- case 2: rTo.meFamily = FAMILY_SWISS; break;
- case 3: rTo.meFamily = FAMILY_MODERN; break;
- case 4: rTo.meFamily = FAMILY_SCRIPT; break;
- case 5: rTo.meFamily = FAMILY_DECORATIVE; break;
- // TODO: is it reasonable to override the attribute with DONTKNOW?
- case 0: // fall through
- default: rTo.meFamilyType = FAMILY_DONTKNOW; break;
- }
- switch( pOS2->panose[3] )
- {
- case 2: // fall through
- case 3: // fall through
- case 4: // fall through
- case 5: // fall through
- case 6: // fall through
- case 7: // fall through
- case 8: rTo.mePitch = PITCH_VARIABLE; break;
- case 9: rTo.mePitch = PITCH_FIXED; break;
- // TODO: is it reasonable to override the attribute with DONTKNOW?
- case 0: // fall through
- case 1: // fall through
- default: rTo.mePitch = PITCH_DONTKNOW; break;
- }
- const double fScale = (double)GetFontSelData().mnHeight / maFaceFT->units_per_EM;
- if (nUseNewLineHeight)
- {
- if( pOS2->sTypoAscender || pOS2->sTypoDescender )
- {
- rTo.mnAscent = (long)( pOS2->sTypoAscender * fScale + 0.5 );
- rTo.mnDescent = (long)( -pOS2->sTypoDescender * fScale + 0.5 );
- rTo.mnExtLeading = (long)( pOS2->sTypoLineGap * fScale + 0.5 );
- rTo.mnIntLeading = (long)( (pOS2->sTypoAscender - pOS2->sTypoDescender - maFaceFT->units_per_EM) * fScale + 0.5 );
- }
- }
- else
- {
- // #108862# sanity check, some fonts treat descent as signed !!!
- int nDescent = pOS2->usWinDescent;
- if( nDescent > 5*maFaceFT->units_per_EM )
- nDescent = (short)pOS2->usWinDescent; // interpret it as signed!
- if( pOS2->usWinAscent || pOS2->usWinDescent ) // #i30551#
- {
- rTo.mnAscent = (long)( +pOS2->usWinAscent * fScale + 0.5 );
- rTo.mnDescent = (long)( +nDescent * fScale + 0.5 );
- rTo.mnIntLeading = (long)( (+pOS2->usWinAscent + pOS2->usWinDescent - maFaceFT->units_per_EM) * fScale + 0.5 );
- }
- rTo.mnExtLeading = 0;
- const TT_HoriHeader* pHHEA = (const TT_HoriHeader*)FT_Get_Sfnt_Table( maFaceFT, ft_sfnt_hhea );
- if( (pHHEA != NULL) && (pOS2->usWinAscent || pOS2->usWinDescent) )
- {
- int nExtLeading = pHHEA->Line_Gap;
- nExtLeading -= (pOS2->usWinAscent + pOS2->usWinDescent);
- nExtLeading += (pHHEA->Ascender - pHHEA->Descender);
- if( nExtLeading > 0 )
- rTo.mnExtLeading = (long)(nExtLeading * fScale + 0.5);
- }
- // Check for CJK capabilities of the current font
- // #107888# workaround for Asian...
- // TODO: remove when ExtLeading fully implemented
- sal_Bool bCJKCapable = ((pOS2->ulUnicodeRange2 & 0x2DF00000) != 0);
- if ( bCJKCapable && (pOS2->usWinAscent || pOS2->usWinDescent) )
- {
- rTo.mnIntLeading += rTo.mnExtLeading;
- // #109280# The line height for Asian fonts is too small.
- // Therefore we add half of the external leading to the
- // ascent, the other half is added to the descent.
- const long nHalfTmpExtLeading = rTo.mnExtLeading / 2;
- const long nOtherHalfTmpExtLeading = rTo.mnExtLeading - nHalfTmpExtLeading;
- // #110641# external leading for Asian fonts.
- // The factor 0.3 has been verified during experiments.
- const long nCJKExtLeading = (long)(0.30 * (rTo.mnAscent + rTo.mnDescent));
- if ( nCJKExtLeading > rTo.mnExtLeading )
- rTo.mnExtLeading = nCJKExtLeading - rTo.mnExtLeading;
- else
- rTo.mnExtLeading = 0;
- rTo.mnAscent += nHalfTmpExtLeading;
- rTo.mnDescent += nOtherHalfTmpExtLeading;
- }
- }
- }
- // initialize kashida width
- // TODO: what if there are different versions of this glyph available
- const int nKashidaGlyphId = GetRawGlyphIndex( 0x0640 );
- if( nKashidaGlyphId )
- {
- GlyphData aGlyphData;
- InitGlyphData( nKashidaGlyphId, aGlyphData );
- rTo.mnMinKashida = aGlyphData.GetMetric().GetCharWidth();
- }
- }
- // -----------------------------------------------------------------------
- static inline void SplitGlyphFlags( const ServerFont& rFont, int& nGlyphIndex, int& nGlyphFlags )
- {
- nGlyphFlags = nGlyphIndex & GF_FLAGMASK;
- nGlyphIndex &= GF_IDXMASK;
- if( nGlyphIndex & GF_ISCHAR )
- nGlyphIndex = rFont.GetRawGlyphIndex( nGlyphIndex );
- }
- // -----------------------------------------------------------------------
- int ServerFont::ApplyGlyphTransform( int nGlyphFlags,
- FT_Glyph pGlyphFT, bool bForBitmapProcessing ) const
- {
- int nAngle = GetFontSelData().mnOrientation;
- // shortcut most common case
- if( !nAngle && !nGlyphFlags )
- return nAngle;
- const FT_Size_Metrics& rMetrics = maFaceFT->size->metrics;
- FT_Vector aVector;
- FT_Matrix aMatrix;
- bool bStretched = false;
- switch( nGlyphFlags & GF_ROTMASK )
- {
- default: // straight
- aVector.x = 0;
- aVector.y = 0;
- aMatrix.xx = +mnCos;
- aMatrix.yy = +mnCos;
- aMatrix.xy = -mnSin;
- aMatrix.yx = +mnSin;
- break;
- case GF_ROTL: // left
- nAngle += 900;
- bStretched = (mfStretch != 1.0);
- aVector.x = (FT_Pos)(+rMetrics.descender * mfStretch);
- aVector.y = -rMetrics.ascender;
- aMatrix.xx = (FT_Pos)(-mnSin / mfStretch);
- aMatrix.yy = (FT_Pos)(-mnSin * mfStretch);
- aMatrix.xy = (FT_Pos)(-mnCos * mfStretch);
- aMatrix.yx = (FT_Pos)(+mnCos / mfStretch);
- break;
- case GF_ROTR: // right
- nAngle -= 900;
- bStretched = (mfStretch != 1.0);
- aVector.x = -maFaceFT->glyph->metrics.horiAdvance;
- aVector.x += (FT_Pos)(rMetrics.descender * mnSin/65536.0);
- aVector.y = (FT_Pos)(-rMetrics.descender * mfStretch * mnCos/65536.0);
- aMatrix.xx = (FT_Pos)(+mnSin / mfStretch);
- aMatrix.yy = (FT_Pos)(+mnSin * mfStretch);
- aMatrix.xy = (FT_Pos)(+mnCos * mfStretch);
- aMatrix.yx = (FT_Pos)(-mnCos / mfStretch);
- break;
- }
- while( nAngle < 0 )
- nAngle += 3600;
- if( pGlyphFT->format != FT_GLYPH_FORMAT_BITMAP )
- {
- FT_Glyph_Transform( pGlyphFT, NULL, &aVector );
- // orthogonal transforms are better handled by bitmap operations
- if( bStretched || (bForBitmapProcessing && (nAngle % 900) != 0) )
- {
- // workaround for compatibility with older FT versions
- if( nFTVERSION < 2102 )
- {
- FT_Fixed t = aMatrix.xy;
- aMatrix.xy = aMatrix.yx;
- aMatrix.yx = t;
- }
- // apply non-orthogonal or stretch transformations
- FT_Glyph_Transform( pGlyphFT, &aMatrix, NULL );
- nAngle = 0;
- }
- }
- else
- {
- // FT<=2005 ignores transforms for bitmaps, so do it manually
- FT_BitmapGlyph pBmpGlyphFT = reinterpret_cast<FT_BitmapGlyph>(pGlyphFT);
- pBmpGlyphFT->left += (aVector.x + 32) >> 6;
- pBmpGlyphFT->top += (aVector.y + 32) >> 6;
- }
- return nAngle;
- }
- // -----------------------------------------------------------------------
- int ServerFont::GetRawGlyphIndex( sal_UCS4 aChar ) const
- {
- if( mpFontInfo->IsSymbolFont() )
- {
- if( !FT_IS_SFNT( maFaceFT ) )
- {
- if( (aChar & 0xFF00) == 0xF000 )
- aChar &= 0xFF; // PS font symbol mapping
- else if( aChar > 0xFF )
- return 0;
- }
- }
- // if needed recode from unicode to font encoding
- if( maRecodeConverter )
- {
- sal_Char aTempArray[8];
- sal_Size nTempSize;
- sal_uInt32 nCvtInfo;
- // assume that modern UCS4 fonts have unicode CMAPs
- // => no encoding remapping to unicode is needed
- if( aChar > 0xFFFF )
- return 0;
- sal_Unicode aUCS2Char = static_cast<sal_Unicode>(aChar);
- rtl_UnicodeToTextContext aContext = rtl_createUnicodeToTextContext( maRecodeConverter );
- int nChars = rtl_convertUnicodeToText( maRecodeConverter, aContext,
- &aUCS2Char, 1, aTempArray, sizeof(aTempArray),
- RTL_UNICODETOTEXT_FLAGS_UNDEFINED_QUESTIONMARK
- | RTL_UNICODETOTEXT_FLAGS_INVALID_QUESTIONMARK,
- &nCvtInfo, &nTempSize );
- rtl_destroyUnicodeToTextContext( maRecodeConverter, aContext );
- aChar = 0;
- for( int i = 0; i < nChars; ++i )
- aChar = aChar*256 + (aTempArray[i] & 0xFF);
- }
- // cache glyph indexes in font info to share between different sizes
- int nGlyphIndex = mpFontInfo->GetGlyphIndex( aChar );
- if( nGlyphIndex < 0 )
- {
- nGlyphIndex = FT_Get_Char_Index( maFaceFT, aChar );
- if( !nGlyphIndex)
- {
- // check if symbol aliasing helps
- if( (aChar <= 0x00FF) && mpFontInfo->IsSymbolFont() )
- nGlyphIndex = FT_Get_Char_Index( maFaceFT, aChar | 0xF000 );
- }
- mpFontInfo->CacheGlyphIndex( aChar, nGlyphIndex );
- }
- return nGlyphIndex;
- }
- // -----------------------------------------------------------------------
- int ServerFont::FixupGlyphIndex( int nGlyphIndex, sal_UCS4 aChar ) const
- {
- int nGlyphFlags = GF_NONE;
- // do glyph substitution if necessary
- // CJK vertical writing needs special treatment
- if( GetFontSelData().mbVertical )
- {
- // TODO: rethink when GSUB is used for non-vertical case
- GlyphSubstitution::const_iterator it = maGlyphSubstitution.find( nGlyphIndex );
- if( it == maGlyphSubstitution.end() )
- {
- int nTemp = GetVerticalChar( aChar );
- if( nTemp ) // is substitution possible
- nTemp = GetRawGlyphIndex( nTemp );
- if( nTemp ) // substitute manually if sensible
- nGlyphIndex = nTemp | (GF_GSUB | GF_ROTL);
- else
- nGlyphFlags |= GetVerticalFlags( aChar );
- }
- else
- {
- // for vertical GSUB also compensate for nOrientation=2700
- nGlyphIndex = (*it).second;
- nGlyphFlags |= GF_GSUB | GF_ROTL;
- }
- }
- if( nGlyphIndex != 0 )
- nGlyphIndex |= nGlyphFlags;
- return nGlyphIndex;
- }
- // -----------------------------------------------------------------------
- int ServerFont::GetGlyphIndex( sal_UCS4 aChar ) const
- {
- int nGlyphIndex = GetRawGlyphIndex( aChar );
- nGlyphIndex = FixupGlyphIndex( nGlyphIndex, aChar );
- return nGlyphIndex;
- }
- // -----------------------------------------------------------------------
- static int lcl_GetCharWidth( FT_FaceRec_* pFaceFT, double fStretch, int nGlyphFlags )
- {
- int nCharWidth = pFaceFT->glyph->metrics.horiAdvance;
- if( nGlyphFlags & GF_ROTMASK ) // for bVertical rotated glyphs
- {
- const FT_Size_Metrics& rMetrics = pFaceFT->size->metrics;
- #if (FTVERSION < 2000)
- nCharWidth = (int)((rMetrics.height - rMetrics.descender) * fStretch);
- #else
- nCharWidth = (int)((rMetrics.height + rMetrics.descender) * fStretch);
- #endif
- }
- return (nCharWidth + 32) >> 6;
- }
- // -----------------------------------------------------------------------
- void ServerFont::InitGlyphData( int nGlyphIndex, GlyphData& rGD ) const
- {
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- int nGlyphFlags;
- SplitGlyphFlags( *this, nGlyphIndex, nGlyphFlags );
- int nLoadFlags = mnLoadFlags;
- // if( mbArtItalic )
- // nLoadFlags |= FT_LOAD_NO_BITMAP;
- FT_Error rc = -1;
- #if (FTVERSION <= 2008)
- // #88364# freetype<=2005 prefers autohinting to embedded bitmaps
- // => first we have to try without hinting
- if( (nLoadFlags & (FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP)) == 0 )
- {
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags|FT_LOAD_NO_HINTING );
- if( (rc==FT_Err_Ok) && (maFaceFT->glyph->format!=FT_GLYPH_FORMAT_BITMAP) )
- rc = -1; // mark as "loading embedded bitmap" was unsuccessful
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- }
- if( rc != FT_Err_Ok )
- #endif
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags );
- if( rc != FT_Err_Ok )
- {
- // we get here e.g. when a PS font lacks the default glyph
- rGD.SetCharWidth( 0 );
- rGD.SetDelta( 0, 0 );
- rGD.SetOffset( 0, 0 );
- rGD.SetSize( Size( 0, 0 ) );
- return;
- }
- const bool bOriginallyZeroWidth = (maFaceFT->glyph->metrics.horiAdvance == 0);
- if( mbArtBold && pFTEmbolden )
- (*pFTEmbolden)( maFaceFT->glyph );
- const int nCharWidth = bOriginallyZeroWidth ? 0 : lcl_GetCharWidth( maFaceFT, mfStretch, nGlyphFlags );
- rGD.SetCharWidth( nCharWidth );
- FT_Glyph pGlyphFT;
- rc = FT_Get_Glyph( maFaceFT->glyph, &pGlyphFT );
- ApplyGlyphTransform( nGlyphFlags, pGlyphFT, false );
- if( mbArtBold && pFTEmbolden && (nFTVERSION < 2200) ) // #i71094# workaround staircase bug
- pGlyphFT->advance.y = 0;
- rGD.SetDelta( (pGlyphFT->advance.x + 0x8000) >> 16, -((pGlyphFT->advance.y + 0x8000) >> 16) );
- FT_BBox aBbox;
- FT_Glyph_Get_CBox( pGlyphFT, FT_GLYPH_BBOX_PIXELS, &aBbox );
- if( aBbox.yMin > aBbox.yMax ) // circumvent freetype bug
- {
- int t=aBbox.yMin; aBbox.yMin=aBbox.yMax, aBbox.yMax=t;
- }
- rGD.SetOffset( aBbox.xMin, -aBbox.yMax );
- rGD.SetSize( Size( (aBbox.xMax-aBbox.xMin+1), (aBbox.yMax-aBbox.yMin) ) );
- FT_Done_Glyph( pGlyphFT );
- }
- // -----------------------------------------------------------------------
- bool ServerFont::GetAntialiasAdvice( void ) const
- {
- if( GetFontSelData().mbNonAntialiased || (mnPrioAntiAlias<=0) )
- return false;
- bool bAdviseAA = true;
- // TODO: also use GASP info
- return bAdviseAA;
- }
- // -----------------------------------------------------------------------
- bool ServerFont::GetGlyphBitmap1( int nGlyphIndex, RawBitmap& rRawBitmap ) const
- {
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- int nGlyphFlags;
- SplitGlyphFlags( *this, nGlyphIndex, nGlyphFlags );
- FT_Int nLoadFlags = mnLoadFlags;
- // #i70930# force mono-hinting for monochrome text
- if( nFTVERSION >= 2110 ) //#i71947# unless it looks worse
- {
- nLoadFlags &= ~0xF0000;
- nLoadFlags |= FT_LOAD_TARGET_MONO;
- }
- if( mbArtItalic )
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- #if (FTVERSION >= 2002)
- // for 0/90/180/270 degree fonts enable hinting even if not advisable
- // non-hinted and non-antialiased bitmaps just look too ugly
- if( (mnCos==0 || mnSin==0) && (mnPrioAutoHint > 0) )
- nLoadFlags &= ~FT_LOAD_NO_HINTING;
- #endif
- if( mnPrioEmbedded <= mnPrioAutoHint )
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- FT_Error rc = -1;
- #if (FTVERSION <= 2008)
- // #88364# freetype<=2005 prefers autohinting to embedded bitmaps
- // => first we have to try without hinting
- if( (nLoadFlags & (FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP)) == 0 )
- {
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags|FT_LOAD_NO_HINTING );
- if( (rc==FT_Err_Ok) && (maFaceFT->glyph->format != FT_GLYPH_FORMAT_BITMAP) )
- rc = -1; // mark as "loading embedded bitmap" was unsuccessful
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- }
- if( rc != FT_Err_Ok )
- #endif
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags );
- if( rc != FT_Err_Ok )
- return false;
- if( mbArtBold && pFTEmbolden )
- (*pFTEmbolden)( maFaceFT->glyph );
- FT_Glyph pGlyphFT;
- rc = FT_Get_Glyph( maFaceFT->glyph, &pGlyphFT );
- if( rc != FT_Err_Ok )
- return false;
- int nAngle = ApplyGlyphTransform( nGlyphFlags, pGlyphFT, true );
- if( mbArtItalic )
- {
- FT_Matrix aMatrix;
- aMatrix.xx = aMatrix.yy = 0x10000L;
- if( nFTVERSION >= 2102 ) // Freetype 2.1.2 API swapped xy with yx
- aMatrix.xy = 0x6000L, aMatrix.yx = 0;
- else
- aMatrix.yx = 0x6000L, aMatrix.xy = 0;
- FT_Glyph_Transform( pGlyphFT, &aMatrix, NULL );
- }
- // Check for zero area bounding boxes as this crashes some versions of FT.
- // This also provides a handy short cut as much of the code following
- // becomes an expensive nop when a glyph covers no pixels.
- FT_BBox cbox;
- FT_Glyph_Get_CBox(pGlyphFT, ft_glyph_bbox_unscaled, &cbox);
- if( (cbox.xMax - cbox.xMin) == 0 || (cbox.yMax - cbox.yMin == 0) )
- {
- nAngle = 0;
- memset(&rRawBitmap, 0, sizeof rRawBitmap);
- FT_Done_Glyph( pGlyphFT );
- return true;
- }
- if( pGlyphFT->format != FT_GLYPH_FORMAT_BITMAP )
- {
- if( pGlyphFT->format == FT_GLYPH_FORMAT_OUTLINE )
- ((FT_OutlineGlyphRec*)pGlyphFT)->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
- // #i15743# freetype API 2.1.3 changed the FT_RENDER_MODE_MONO constant
- FT_Render_Mode nRenderMode = (FT_Render_Mode)((nFTVERSION<2103) ? 1 : FT_RENDER_MODE_MONO);
- rc = FT_Glyph_To_Bitmap( &pGlyphFT, nRenderMode, NULL, sal_True );
- if( rc != FT_Err_Ok )
- {
- FT_Done_Glyph( pGlyphFT );
- return false;
- }
- }
- const FT_BitmapGlyph pBmpGlyphFT = reinterpret_cast<const FT_BitmapGlyph>(pGlyphFT);
- // NOTE: autohinting in FT<=2.0.2 miscalculates the offsets below by +-1
- rRawBitmap.mnXOffset = +pBmpGlyphFT->left;
- rRawBitmap.mnYOffset = -pBmpGlyphFT->top;
- const FT_Bitmap& rBitmapFT = pBmpGlyphFT->bitmap;
- rRawBitmap.mnHeight = rBitmapFT.rows;
- rRawBitmap.mnBitCount = 1;
- if( mbArtBold && !pFTEmbolden )
- {
- rRawBitmap.mnWidth = rBitmapFT.width + 1;
- int nLineBytes = (rRawBitmap.mnWidth + 7) >> 3;
- rRawBitmap.mnScanlineSize = (nLineBytes > rBitmapFT.pitch) ? nLineBytes : rBitmapFT.pitch;
- }
- else
- {
- rRawBitmap.mnWidth = rBitmapFT.width;
- rRawBitmap.mnScanlineSize = rBitmapFT.pitch;
- }
- const sal_uLong nNeededSize = rRawBitmap.mnScanlineSize * rRawBitmap.mnHeight;
- if( rRawBitmap.mnAllocated < nNeededSize )
- {
- delete[] rRawBitmap.mpBits;
- rRawBitmap.mnAllocated = 2*nNeededSize;
- rRawBitmap.mpBits = new unsigned char[ rRawBitmap.mnAllocated ];
- }
- if( !mbArtBold || pFTEmbolden )
- {
- memcpy( rRawBitmap.mpBits, rBitmapFT.buffer, nNeededSize );
- }
- else
- {
- memset( rRawBitmap.mpBits, 0, nNeededSize );
- const unsigned char* pSrcLine = rBitmapFT.buffer;
- unsigned char* pDstLine = rRawBitmap.mpBits;
- for( int h = rRawBitmap.mnHeight; --h >= 0; )
- {
- memcpy( pDstLine, pSrcLine, rBitmapFT.pitch );
- pDstLine += rRawBitmap.mnScanlineSize;
- pSrcLine += rBitmapFT.pitch;
- }
- unsigned char* p = rRawBitmap.mpBits;
- for( sal_uLong y=0; y < rRawBitmap.mnHeight; y++ )
- {
- unsigned char nLastByte = 0;
- for( sal_uLong x=0; x < rRawBitmap.mnScanlineSize; x++ )
- {
- unsigned char nTmp = p[x] << 7;
- p[x] |= (p[x] >> 1) | nLastByte;
- nLastByte = nTmp;
- }
- p += rRawBitmap.mnScanlineSize;
- }
- }
- FT_Done_Glyph( pGlyphFT );
- // special case for 0/90/180/270 degree orientation
- switch( nAngle )
- {
- case -900:
- case +900:
- case +1800:
- case +2700:
- rRawBitmap.Rotate( nAngle );
- break;
- }
- return true;
- }
- // -----------------------------------------------------------------------
- bool ServerFont::GetGlyphBitmap8( int nGlyphIndex, RawBitmap& rRawBitmap ) const
- {
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- int nGlyphFlags;
- SplitGlyphFlags( *this, nGlyphIndex, nGlyphFlags );
- FT_Int nLoadFlags = mnLoadFlags;
- if( mbArtItalic )
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- #if (FTVERSION <= 2004) && !defined(TT_CONFIG_OPTION_BYTECODE_INTERPRETER)
- // autohinting in FT<=2.0.4 makes antialiased glyphs look worse
- nLoadFlags |= FT_LOAD_NO_HINTING;
- #else
- if( (nGlyphFlags & GF_UNHINTED) || (mnPrioAutoHint < mnPrioAntiAlias) )
- nLoadFlags |= FT_LOAD_NO_HINTING;
- #endif
- if( mnPrioEmbedded <= mnPrioAntiAlias )
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- FT_Error rc = -1;
- #if (FTVERSION <= 2008)
- // #88364# freetype<=2005 prefers autohinting to embedded bitmaps
- // => first we have to try without hinting
- if( (nLoadFlags & (FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP)) == 0 )
- {
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags|FT_LOAD_NO_HINTING );
- if( (rc==FT_Err_Ok) && (maFaceFT->glyph->format != FT_GLYPH_FORMAT_BITMAP) )
- rc = -1; // mark as "loading embedded bitmap" was unsuccessful
- nLoadFlags |= FT_LOAD_NO_BITMAP;
- }
- if( rc != FT_Err_Ok )
- #endif
- rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags );
- if( rc != FT_Err_Ok )
- return false;
- if( mbArtBold && pFTEmbolden )
- (*pFTEmbolden)( maFaceFT->glyph );
- FT_Glyph pGlyphFT;
- rc = FT_Get_Glyph( maFaceFT->glyph, &pGlyphFT );
- if( rc != FT_Err_Ok )
- return false;
- int nAngle = ApplyGlyphTransform( nGlyphFlags, pGlyphFT, true );
- if( mbArtItalic )
- {
- FT_Matrix aMatrix;
- aMatrix.xx = aMatrix.yy = 0x10000L;
- if( nFTVERSION >= 2102 ) // Freetype 2.1.2 API swapped xy with yx
- aMatrix.xy = 0x6000L, aMatrix.yx = 0;
- else
- aMatrix.yx = 0x6000L, aMatrix.xy = 0;
- FT_Glyph_Transform( pGlyphFT, &aMatrix, NULL );
- }
- if( pGlyphFT->format == FT_GLYPH_FORMAT_OUTLINE )
- ((FT_OutlineGlyph)pGlyphFT)->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
- bool bEmbedded = (pGlyphFT->format == FT_GLYPH_FORMAT_BITMAP);
- if( !bEmbedded )
- {
- rc = FT_Glyph_To_Bitmap( &pGlyphFT, FT_RENDER_MODE_NORMAL, NULL, sal_True );
- if( rc != FT_Err_Ok )
- {
- FT_Done_Glyph( pGlyphFT );
- return false;
- }
- }
- const FT_BitmapGlyph pBmpGlyphFT = reinterpret_cast<const FT_BitmapGlyph>(pGlyphFT);
- rRawBitmap.mnXOffset = +pBmpGlyphFT->left;
- rRawBitmap.mnYOffset = -pBmpGlyphFT->top;
- const FT_Bitmap& rBitmapFT = pBmpGlyphFT->bitmap;
- rRawBitmap.mnHeight = rBitmapFT.rows;
- rRawBitmap.mnWidth = rBitmapFT.width;
- rRawBitmap.mnBitCount = 8;
- rRawBitmap.mnScanlineSize = bEmbedded ? rBitmapFT.width : rBitmapFT.pitch;
- if( mbArtBold && !pFTEmbolden )
- {
- ++rRawBitmap.mnWidth;
- ++rRawBitmap.mnScanlineSize;
- }
- rRawBitmap.mnScanlineSize = (rRawBitmap.mnScanlineSize + 3) & -4;
- const sal_uLong nNeededSize = rRawBitmap.mnScanlineSize * rRawBitmap.mnHeight;
- if( rRawBitmap.mnAllocated < nNeededSize )
- {
- delete[] rRawBitmap.mpBits;
- rRawBitmap.mnAllocated = 2*nNeededSize;
- rRawBitmap.mpBits = new unsigned char[ rRawBitmap.mnAllocated ];
- }
- const unsigned char* pSrc = rBitmapFT.buffer;
- unsigned char* pDest = rRawBitmap.mpBits;
- if( !bEmbedded )
- {
- for( int y = rRawBitmap.mnHeight, x; --y >= 0 ; )
- {
- for( x = 0; x < rBitmapFT.width; ++x )
- *(pDest++) = *(pSrc++);
- for(; x < int(rRawBitmap.mnScanlineSize); ++x )
- *(pDest++) = 0;
- }
- }
- else
- {
- for( int y = rRawBitmap.mnHeight, x; --y >= 0 ; )
- {
- unsigned char nSrc = 0;
- for( x = 0; x < rBitmapFT.width; ++x, nSrc+=nSrc )
- {
- if( (x & 7) == 0 )
- nSrc = *(pSrc++);
- *(pDest++) = (0x7F - nSrc) >> 8;
- }
- for(; x < int(rRawBitmap.mnScanlineSize); ++x )
- *(pDest++) = 0;
- }
- }
- if( mbArtBold && !pFTEmbolden )
- {
- // overlay with glyph image shifted by one left pixel
- unsigned char* p = rRawBitmap.mpBits;
- for( sal_uLong y=0; y < rRawBitmap.mnHeight; y++ )
- {
- unsigned char nLastByte = 0;
- for( sal_uLong x=0; x < rRawBitmap.mnWidth; x++ )
- {
- unsigned char nTmp = p[x];
- p[x] |= p[x] | nLastByte;
- nLastByte = nTmp;
- }
- p += rRawBitmap.mnScanlineSize;
- }
- }
- if( !bEmbedded && mbUseGamma )
- {
- unsigned char* p = rRawBitmap.mpBits;
- for( sal_uLong y=0; y < rRawBitmap.mnHeight; y++ )
- {
- for( sal_uLong x=0; x < rRawBitmap.mnWidth; x++ )
- {
- p[x] = aGammaTable[ p[x] ];
- }
- p += rRawBitmap.mnScanlineSize;
- }
- }
- FT_Done_Glyph( pGlyphFT );
- // special case for 0/90/180/270 degree orientation
- switch( nAngle )
- {
- case -900:
- case +900:
- case +1800:
- case +2700:
- rRawBitmap.Rotate( nAngle );
- break;
- }
- return true;
- }
- // -----------------------------------------------------------------------
- // determine unicode ranges in font
- // -----------------------------------------------------------------------
- const ImplFontCharMap* ServerFont::GetImplFontCharMap( void ) const
- {
- const ImplFontCharMap* pIFCMap = mpFontInfo->GetImplFontCharMap();
- return pIFCMap;
- }
- const ImplFontCharMap* FtFontInfo::GetImplFontCharMap( void )
- {
- // check if the charmap is already cached
- if( mpFontCharMap )
- return mpFontCharMap;
- // get the charmap and cache it
- CmapResult aCmapResult;
- bool bOK = GetFontCodeRanges( aCmapResult );
- if( bOK )
- mpFontCharMap = new ImplFontCharMap( aCmapResult );
- else
- mpFontCharMap = ImplFontCharMap::GetDefaultMap();
- mpFontCharMap->AddReference();
- return mpFontCharMap;
- }
- // TODO: merge into method GetFontCharMap()
- bool FtFontInfo::GetFontCodeRanges( CmapResult& rResult ) const
- {
- rResult.mbSymbolic = IsSymbolFont();
- // TODO: is the full CmapResult needed on platforms calling this?
- if( FT_IS_SFNT( maFaceFT ) )
- {
- sal_uLong nLength = 0;
- const unsigned char* pCmap = GetTable( "cmap", &nLength );
- if( pCmap && (nLength > 0) )
- if( ParseCMAP( pCmap, nLength, rResult ) )
- return true;
- }
- typedef std::vector<sal_uInt32> U32Vector;
- U32Vector aCodes;
- // FT's coverage is available since FT>=2.1.0 (OOo-baseline>=2.1.4 => ok)
- aCodes.reserve( 0x1000 );
- FT_UInt nGlyphIndex;
- for( sal_uInt32 cCode = FT_Get_First_Char( maFaceFT, &nGlyphIndex );; )
- {
- if( !nGlyphIndex )
- break;
- aCodes.push_back( cCode ); // first code inside range
- sal_uInt32 cNext = cCode;
- do cNext = FT_Get_Next_Char( maFaceFT, cCode, &nGlyphIndex ); while( cNext == ++cCode );
- aCodes.push_back( cCode ); // first code outside range
- cCode = cNext;
- }
- const int nCount = aCodes.size();
- if( !nCount) {
- if( !rResult.mbSymbolic )
- return false;
- // we usually get here for Type1 symbol fonts
- aCodes.push_back( 0xF020 );
- aCodes.push_back( 0xF100 );
- }
- sal_uInt32* pCodes = new sal_uInt32[ nCount ];
- for( int i = 0; i < nCount; ++i )
- pCodes[i] = aCodes[i];
- rResult.mpRangeCodes = pCodes;
- rResult.mnRangeCount = nCount / 2;
- return true;
- }
- bool ServerFont::GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const
- {
- bool bRet = false;
- sal_uLong nLength = 0;
- // load GSUB table
- const FT_Byte* pGSUB = mpFontInfo->GetTable("GSUB", &nLength);
- if (pGSUB)
- vcl::getTTScripts(rFontCapabilities.maGSUBScriptTags, pGSUB, nLength);
- // load OS/2 table
- const FT_Byte* pOS2 = mpFontInfo->GetTable("OS/2", &nLength);
- if (pOS2)
- {
- bRet = vcl::getTTCoverage(
- rFontCapabilities.maUnicodeRange,
- rFontCapabilities.maCodePageRange,
- pOS2, nLength);
- }
- return bRet;
- }
- // -----------------------------------------------------------------------
- sal_uLong ServerFont::GetKernPairs( ImplKernPairData** ppKernPairs ) const
- {
- // if no kerning info is available in the font file
- *ppKernPairs = NULL;
- if( !FT_HAS_KERNING( maFaceFT ) || !FT_IS_SFNT( maFaceFT ) )
- {
- // then we have may have extra kerning info from e.g. psprint
- int nCount = mpFontInfo->GetExtraKernPairs( ppKernPairs );
- // scale the kern values to match the font size
- const FontSelectPattern& rFSD = GetFontSelData();
- int nFontWidth = rFSD.mnWidth ? rFSD.mnWidth : rFSD.mnHeight;
- ImplKernPairData* pKernPair = *ppKernPairs;
- for( int i = nCount; --i >= 0; ++pKernPair )
- {
- long& rVal = pKernPair->mnKern;
- rVal = ((rVal * nFontWidth) + 500) / 1000;
- }
- return nCount;
- }
- // when font faces of different sizes share the same maFaceFT
- // then we have to make sure that it uses the correct maSizeFT
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- // first figure out which glyph pairs are involved in kerning
- sal_uLong nKernLength = 0;
- const FT_Byte* const pKern = mpFontInfo->GetTable( "kern", &nKernLength );
- if( !pKern )
- return 0;
- // combine TTF/OTF tables from the font file to build a vector of
- // unicode kerning pairs using Freetype's glyph kerning calculation
- // for the kerning value
- // TODO: is it worth to share the glyph->unicode mapping between
- // different instances of the same font face?
- typedef std::vector<ImplKernPairData> KernVector;
- KernVector aKernGlyphVector;
- ImplKernPairData aKernPair;
- aKernPair.mnKern = 0; // To prevent "is used uninitialized" warning...
- const FT_Byte* pBuffer = pKern;
- sal_uLong nVersion = GetUShort( pBuffer+0 );
- sal_uInt16 nTableCnt = GetUShort( pBuffer+2 );
- // Microsoft/Old TrueType style kern table
- if ( nVersion == 0 )
- {
- pBuffer += 4;
- for( sal_uInt16 nTableIdx = 0; nTableIdx < nTableCnt; ++nTableIdx )
- {
- // sal_uInt16 nSubVersion = GetUShort( pBuffer+0 );
- // sal_uInt16 nSubLength = GetUShort( pBuffer+2 );
- sal_uInt16 nSubCoverage = GetUShort( pBuffer+4 );
- pBuffer += 6;
- if( (nSubCoverage&0x03) != 0x01 ) // no interest in minimum info here
- continue;
- switch( nSubCoverage >> 8 )
- {
- case 0: // version 0, kerning format 0
- {
- sal_uInt16 nPairs = GetUShort( pBuffer );
- pBuffer += 8; // skip search hints
- aKernGlyphVector.reserve( aKernGlyphVector.size() + nPairs );
- for( int i = 0; i < nPairs; ++i )
- {
- aKernPair.mnChar1 = GetUShort( pBuffer+0 );
- aKernPair.mnChar2 = GetUShort( pBuffer+2 );
- //long nUnscaledKern= GetSShort( pBuffer );
- pBuffer += 6;
- aKernGlyphVector.push_back( aKernPair );
- }
- }
- break;
- case 2: // version 0, kerning format 2
- {
- const FT_Byte* pSubTable = pBuffer;
- //sal_uInt16 nRowWidth = GetUShort( pBuffer+0 );
- sal_uInt16 nOfsLeft = GetUShort( pBuffer+2 );
- sal_uInt16 nOfsRight = GetUShort( pBuffer+4 );
- sal_uInt16 nOfsArray = GetUShort( pBuffer+6 );
- pBuffer += 8;
- const FT_Byte* pTmp = pSubTable + nOfsLeft;
- sal_uInt16 nFirstLeft = GetUShort( pTmp+0 );
- sal_uInt16 nLastLeft = GetUShort( pTmp+2 ) + nFirstLeft - 1;
- pTmp = pSubTable + nOfsRight;
- sal_uInt16 nFirstRight = GetUShort( pTmp+0 );
- sal_uInt16 nLastRight = GetUShort( pTmp+2 ) + nFirstRight - 1;
- sal_uLong nPairs = (sal_uLong)(nLastLeft - nFirstLeft + 1) * (nLastRight - nFirstRight + 1);
- aKernGlyphVector.reserve( aKernGlyphVector.size() + nPairs );
- pTmp = pSubTable + nOfsArray;
- for( int nLeft = nFirstLeft; nLeft < nLastLeft; ++nLeft )
- {
- aKernPair.mnChar1 = nLeft;
- for( int nRight = 0; nRight < nLastRight; ++nRight )
- {
- if( GetUShort( pTmp ) != 0 )
- {
- aKernPair.mnChar2 = nRight;
- aKernGlyphVector.push_back( aKernPair );
- }
- pTmp += 2;
- }
- }
- }
- break;
- }
- }
- }
- // Apple New style kern table
- pBuffer = pKern;
- nVersion = NEXT_U32( pBuffer );
- nTableCnt = NEXT_U32( pBuffer );
- if ( nVersion == 0x00010000 )
- {
- for( sal_uInt16 nTableIdx = 0; nTableIdx < nTableCnt; ++nTableIdx )
- {
- /*sal_uLong nLength =*/ NEXT_U32( pBuffer );
- sal_uInt16 nCoverage = NEXT_U16( pBuffer );
- /*sal_uInt16 nTupleIndex =*/ NEXT_U16( pBuffer );
- // Kerning sub-table format, 0 through 3
- sal_uInt8 nSubTableFormat = nCoverage & 0x00FF;
- switch( nSubTableFormat )
- {
- case 0: // version 0, kerning format 0
- {
- sal_uInt16 nPairs = NEXT_U16( pBuffer );
- pBuffer += 6; // skip search hints
- aKernGlyphVector.reserve( aKernGlyphVector.size() + nPairs );
- for( int i = 0; i < nPairs; ++i )
- {
- aKernPair.mnChar1 = NEXT_U16( pBuffer );
- aKernPair.mnChar2 = NEXT_U16( pBuffer );
- /*long nUnscaledKern=*/ NEXT_S16( pBuffer );
- aKernGlyphVector.push_back( aKernPair );
- }
- }
- break;
- case 2: // version 0, kerning format 2
- {
- const FT_Byte* pSubTable = pBuffer;
- /*sal_uInt16 nRowWidth =*/ NEXT_U16( pBuffer );
- sal_uInt16 nOfsLeft = NEXT_U16( pBuffer );
- sal_uInt16 nOfsRight = NEXT_U16( pBuffer );
- sal_uInt16 nOfsArray = NEXT_U16( pBuffer );
- const FT_Byte* pTmp = pSubTable + nOfsLeft;
- sal_uInt16 nFirstLeft = NEXT_U16( pTmp );
- sal_uInt16 nLastLeft = NEXT_U16( pTmp ) + nFirstLeft - 1;
- pTmp = pSubTable + nOfsRight;
- sal_uInt16 nFirstRight = NEXT_U16( pTmp );
- sal_uInt16 nLastRight = NEXT_U16( pTmp ) + nFirstRight - 1;
- sal_uLong nPairs = (sal_uLong)(nLastLeft - nFirstLeft + 1) * (nLastRight - nFirstRight + 1);
- aKernGlyphVector.reserve( aKernGlyphVector.size() + nPairs );
- pTmp = pSubTable + nOfsArray;
- for( int nLeft = nFirstLeft; nLeft < nLastLeft; ++nLeft )
- {
- aKernPair.mnChar1 = nLeft;
- for( int nRight = 0; nRight < nLastRight; ++nRight )
- {
- if( NEXT_S16( pTmp ) != 0 )
- {
- aKernPair.mnChar2 = nRight;
- aKernGlyphVector.push_back( aKernPair );
- }
- }
- }
- }
- break;
- default:
- fprintf( stderr, "gcach_ftyp.cxx: Found unsupported Apple-style kern subtable type %d.\n", nSubTableFormat );
- break;
- }
- }
- }
- // now create VCL's ImplKernPairData[] format for all glyph pairs
- sal_uLong nKernCount = aKernGlyphVector.size();
- if( nKernCount )
- {
- // prepare glyphindex to character mapping
- // TODO: this is needed to support VCL's existing kerning infrastructure,
- // eliminate it up by redesigning kerning infrastructure to work with glyph indizes
- typedef boost::unordered_multimap<sal_uInt16,sal_Unicode> Cmap;
- Cmap aCmap;
- for( sal_Unicode aChar = 0x0020; aChar < 0xFFFE; ++aChar )
- {
- sal_uInt16 nGlyphIndex = GetGlyphIndex( aChar );
- if( nGlyphIndex )
- aCmap.insert( Cmap::value_type( nGlyphIndex, aChar ) );
- }
- // translate both glyph indizes in kerning pairs to characters
- // problem is that these are 1:n mappings...
- KernVector aKernCharVector;
- aKernCharVector.reserve( nKernCount );
- KernVector::iterator it;
- for( it = aKernGlyphVector.begin(); it != aKernGlyphVector.end(); ++it )
- {
- FT_Vector aKernVal;
- FT_Error rcFT = FT_Get_Kerning( maFaceFT, it->mnChar1, it->mnChar2,
- FT_KERNING_DEFAULT, &aKernVal );
- aKernPair.mnKern = aKernVal.x >> 6;
- if( (aKernPair.mnKern == 0) || (rcFT != FT_Err_Ok) )
- continue;
- typedef std::pair<Cmap::iterator,Cmap::iterator> CPair;
- const CPair p1 = aCmap.equal_range( it->mnChar1 );
- const CPair p2 = aCmap.equal_range( it->mnChar2 );
- for( Cmap::const_iterator i1 = p1.first; i1 != p1.second; ++i1 )
- {
- aKernPair.mnChar1 = (*i1).second;
- for( Cmap::const_iterator i2 = p2.first; i2 != p2.second; ++i2 )
- {
- aKernPair.mnChar2 = (*i2).second;
- aKernCharVector.push_back( aKernPair );
- }
- }
- }
- // now move the resulting vector into VCL's ImplKernPairData[] format
- nKernCount = aKernCharVector.size();
- ImplKernPairData* pTo = new ImplKernPairData[ nKernCount ];
- *ppKernPairs = pTo;
- for( it = aKernCharVector.begin(); it != aKernCharVector.end(); ++it, ++pTo )
- {
- pTo->mnChar1 = it->mnChar1;
- pTo->mnChar2 = it->mnChar2;
- pTo->mnKern = it->mnKern;
- }
- }
- return nKernCount;
- }
- // -----------------------------------------------------------------------
- // outline stuff
- // -----------------------------------------------------------------------
- class PolyArgs
- {
- public:
- PolyArgs( PolyPolygon& rPolyPoly, sal_uInt16 nMaxPoints );
- ~PolyArgs();
- void AddPoint( long nX, long nY, PolyFlags);
- void ClosePolygon();
- long GetPosX() const { return maPosition.x;}
- long GetPosY() const { return maPosition.y;}
- private:
- PolyPolygon& mrPolyPoly;
- Point* mpPointAry;
- sal_uInt8* mpFlagAry;
- FT_Vector maPosition;
- sal_uInt16 mnMaxPoints;
- sal_uInt16 mnPoints;
- sal_uInt16 mnPoly;
- bool bHasOffline;
- };
- // -----------------------------------------------------------------------
- PolyArgs::PolyArgs( PolyPolygon& rPolyPoly, sal_uInt16 nMaxPoints )
- : mrPolyPoly(rPolyPoly),
- mnMaxPoints(nMaxPoints),
- mnPoints(0),
- mnPoly(0),
- bHasOffline(false)
- {
- mpPointAry = new Point[ mnMaxPoints ];
- mpFlagAry = new sal_uInt8 [ mnMaxPoints ];
- }
- // -----------------------------------------------------------------------
- PolyArgs::~PolyArgs()
- {
- delete[] mpFlagAry;
- delete[] mpPointAry;
- }
- // -----------------------------------------------------------------------
- void PolyArgs::AddPoint( long nX, long nY, PolyFlags aFlag )
- {
- DBG_ASSERT( (mnPoints < mnMaxPoints), "FTGlyphOutline: AddPoint overflow!" );
- if( mnPoints >= mnMaxPoints )
- return;
- maPosition.x = nX;
- maPosition.y = nY;
- mpPointAry[ mnPoints ] = Point( nX, nY );
- mpFlagAry[ mnPoints++ ]= aFlag;
- bHasOffline |= (aFlag != POLY_NORMAL);
- }
- // -----------------------------------------------------------------------
- void PolyArgs::ClosePolygon()
- {
- if( !mnPoly++ )
- return;
- // freetype seems to always close the polygon with an ON_CURVE point
- // PolyPoly wants to close the polygon itself => remove last point
- DBG_ASSERT( (mnPoints >= 2), "FTGlyphOutline: PolyFinishNum failed!" );
- --mnPoints;
- DBG_ASSERT( (mpPointAry[0]==mpPointAry[mnPoints]), "FTGlyphOutline: PolyFinishEq failed!" );
- DBG_ASSERT( (mpFlagAry[0]==POLY_NORMAL), "FTGlyphOutline: PolyFinishFE failed!" );
- DBG_ASSERT( (mpFlagAry[mnPoints]==POLY_NORMAL), "FTGlyphOutline: PolyFinishFS failed!" );
- Polygon aPoly( mnPoints, mpPointAry, (bHasOffline ? mpFlagAry : NULL) );
- // #i35928#
- // This may be a invalid polygons, e.g. the last point is a control point.
- // So close the polygon (and add the first point again) if the last point
- // is a control point or different from first.
- // #i48298#
- // Now really duplicating the first point, to close or correct the
- // polygon. Also no longer duplicating the flags, but enforcing
- // POLY_NORMAL for the newly added last point.
- const sal_uInt16 nPolySize(aPoly.GetSize());
- if(nPolySize)
- {
- if((aPoly.HasFlags() && POLY_CONTROL == aPoly.GetFlags(nPolySize - 1))
- || (aPoly.GetPoint(nPolySize - 1) != aPoly.GetPoint(0)))
- {
- aPoly.SetSize(nPolySize + 1);
- aPoly.SetPoint(aPoly.GetPoint(0), nPolySize);
- if(aPoly.HasFlags())
- {
- aPoly.SetFlags(nPolySize, POLY_NORMAL);
- }
- }
- }
- mrPolyPoly.Insert( aPoly );
- mnPoints = 0;
- bHasOffline = false;
- }
- // -----------------------------------------------------------------------
- extern "C" {
- // TODO: wait till all compilers accept that calling conventions
- // for functions are the same independent of implementation constness,
- // then uncomment the const-tokens in the function interfaces below
- static int FT_move_to( FT_Vector_CPtr p0, void* vpPolyArgs )
- {
- PolyArgs& rA = *reinterpret_cast<PolyArgs*>(vpPolyArgs);
- // move_to implies a new polygon => finish old polygon first
- rA.ClosePolygon();
- rA.AddPoint( p0->x, p0->y, POLY_NORMAL );
- return 0;
- }
- static int FT_line_to( FT_Vector_CPtr p1, void* vpPolyArgs )
- {
- PolyArgs& rA = *reinterpret_cast<PolyArgs*>(vpPolyArgs);
- rA.AddPoint( p1->x, p1->y, POLY_NORMAL );
- return 0;
- }
- static int FT_conic_to( FT_Vector_CPtr p1, FT_Vector_CPtr p2, void* vpPolyArgs )
- {
- PolyArgs& rA = *reinterpret_cast<PolyArgs*>(vpPolyArgs);
- // VCL's Polygon only knows cubic beziers
- const long nX1 = (2 * rA.GetPosX() + 4 * p1->x + 3) / 6;
- const long nY1 = (2 * rA.GetPosY() + 4 * p1->y + 3) / 6;
- rA.AddPoint( nX1, nY1, POLY_CONTROL );
- const long nX2 = (2 * p2->x + 4 * p1->x + 3) / 6;
- const long nY2 = (2 * p2->y + 4 * p1->y + 3) / 6;
- rA.AddPoint( nX2, nY2, POLY_CONTROL );
- rA.AddPoint( p2->x, p2->y, POLY_NORMAL );
- return 0;
- }
- static int FT_cubic_to( FT_Vector_CPtr p1, FT_Vector_CPtr p2, FT_Vector_CPtr p3, void* vpPolyArgs )
- {
- PolyArgs& rA = *reinterpret_cast<PolyArgs*>(vpPolyArgs);
- rA.AddPoint( p1->x, p1->y, POLY_CONTROL );
- rA.AddPoint( p2->x, p2->y, POLY_CONTROL );
- rA.AddPoint( p3->x, p3->y, POLY_NORMAL );
- return 0;
- }
- } // extern "C"
- // -----------------------------------------------------------------------
- bool ServerFont::GetGlyphOutline( int nGlyphIndex,
- ::basegfx::B2DPolyPolygon& rB2DPolyPoly ) const
- {
- if( maSizeFT )
- pFTActivateSize( maSizeFT );
- rB2DPolyPoly.clear();
- int nGlyphFlags;
- SplitGlyphFlags( *this, nGlyphIndex, nGlyphFlags );
- FT_Int nLoadFlags = FT_LOAD_DEFAULT | FT_LOAD_IGNORE_TRANSFORM;
- #ifdef FT_LOAD_TARGET_LIGHT
- // enable "light hinting" if available
- if( nFTVERSION >= 2103 )
- nLoadFlags |= FT_LOAD_TARGET_LIGHT;
- #endif
- FT_Error rc = FT_Load_Glyph( maFaceFT, nGlyphIndex, nLoadFlags );
- if( rc != FT_Err_Ok )
- return false;
- if( mbArtBold && pFTEmbolden )
- (*pFTEmbolden)( maFaceFT->glyph );
- FT_Glyph pGlyphFT;
- rc = FT_Get_Glyph( maFaceFT->glyph, &pGlyphFT );
- if( rc != FT_Err_Ok )
- return false;
- if( pGlyphFT->format != FT_GLYPH_FORMAT_OUTLINE )
- return false;
- if( mbArtItalic )
- {
- FT_Matrix aMatrix;
- aMatrix.xx = aMatrix.yy = 0x10000L;
- if( nFTVERSION >= 2102 ) // Freetype 2.1.2 API swapped xy with yx
- aMatrix.xy = 0x6000L, aMatrix.yx = 0;
- else
- aMatrix.yx = 0x6000L, aMatrix.xy = 0;
- FT_Glyph_Transform( pGlyphFT, &aMatrix, NULL );
- }
- FT_Outline& rOutline = reinterpret_cast<FT_OutlineGlyphRec*>(pGlyphFT)->outline;
- if( !rOutline.n_points ) // blank glyphs are ok
- return true;
- long nMaxPoints = 1 + rOutline.n_points * 3;
- PolyPolygon aToolPolyPolygon;
- PolyArgs aPolyArg( aToolPolyPolygon, nMaxPoints );
- /*int nAngle =*/ ApplyGlyphTransform( nGlyphFlags, pGlyphFT, false );
- FT_Outline_Funcs aFuncs;
- aFuncs.move_to = &FT_move_to;
- aFuncs.line_to = &FT_line_to;
- aFuncs.conic_to = &FT_conic_to;
- aFuncs.cubic_to = &FT_cubic_to;
- aFuncs.shift = 0;
- aFuncs.delta = 0;
- rc = FT_Outline_Decompose( &rOutline, &aFuncs, (void*)&aPolyArg );
- aPolyArg.ClosePolygon(); // close last polygon
- FT_Done_Glyph( pGlyphFT );
- // convert to basegfx polypolygon
- // TODO: get rid of the intermediate tools polypolygon
- rB2DPolyPoly = aToolPolyPolygon.getB2DPolyPolygon();
- rB2DPolyPoly.transform(basegfx::tools::createScaleB2DHomMatrix( +1.0/(1<<6), -1.0/(1<<6) ));
- return true;
- }
- // -----------------------------------------------------------------------
- bool ServerFont::ApplyGSUB( const FontSelectPattern& rFSD )
- {
- #define MKTAG(s) ((((((s[0]<<8)+s[1])<<8)+s[2])<<8)+s[3])
- typedef std::vector<sal_uLong> ReqFeatureTagList;
- ReqFeatureTagList aReqFeatureTagList;
- if( rFSD.mbVertical )
- aReqFeatureTagList.push_back( MKTAG("vert") );
- sal_uLong nRequestedScript = 0; //MKTAG("hani");//### TODO: where to get script?
- sal_uLong nRequestedLangsys = 0; //MKTAG("ZHT"); //### TODO: where to get langsys?
- // TODO: request more features depending on script and language system
- if( aReqFeatureTagList.empty()) // nothing to do
- return true;
- // load GSUB table into memory
- sal_uLong nLength = 0;
- const FT_Byte* const pGsubBase = mpFontInfo->GetTable( "GSUB", &nLength );
- if( !pGsubBase )
- return false;
- // parse GSUB header
- const FT_Byte* pGsubHeader = pGsubBase;
- const sal_uInt16 nOfsScriptList = GetUShort( pGsubHeader+4 );
- const sal_uInt16 nOfsFeatureTable = GetUShort( pGsubHeader+6 );
- const sal_uInt16 nOfsLookupList = GetUShort( pGsubHeader+8 );
- pGsubHeader += 10;
- typedef std::vector<sal_uInt16> UshortList;
- UshortList aFeatureIndexList;
- // parse Script Table
- const FT_Byte* pScriptHeader = pGsubBase + nOfsScriptList;
- const sal_uInt16 nCntScript = GetUShort( pScriptHeader+0 );
- pScriptHeader += 2;
- for( sal_uInt16 nScriptIndex = 0; nScriptIndex < nCntScript; ++nScriptIndex )
- {
- const sal_uLong nScriptTag = GetUInt( pScriptHeader+0 ); // e.g. hani/arab/kana/hang
- const sal_uInt16 nOfsScriptTable= GetUShort( pScriptHeader+4 );
- pScriptHeader += 6; //###
- if( (nScriptTag != nRequestedScript) && (nRequestedScript != 0) )
- continue;
- const FT_Byte* pScriptTable = pGsubBase + nOfsScriptList + nOfsScriptTable;
- const sal_uInt16 nDefaultLangsysOfs = GetUShort( pScriptTable+0 );
- const sal_uInt16 nCntLangSystem = GetUShort( pScriptTable+2 );
- pScriptTable += 4;
- sal_uInt16 nLangsysOffset = 0;
- for( sal_uInt16 nLangsysIndex = 0; nLangsysIndex < nCntLangSystem; ++nLangsysIndex )
- {
- const sal_uLong nTag = GetUInt( pScriptTable+0 ); // e.g. KOR/ZHS/ZHT/JAN
- const sal_uInt16 nOffset= GetUShort( pScriptTable+4 );
- pScriptTable += 6;
- if( (nTag != nRequestedLangsys) && (nRequestedLangsys != 0) )
- continue;
- nLangsysOffset = nOffset;
- break;
- }
- if( (nDefaultLangsysOfs != 0) && (nDefaultLangsysOfs != nLangsysOffset) )
- {
- const FT_Byte* pLangSys = pGsubBase + nOfsScriptList + nOfsScriptTable + nDefaultLangsysOfs;
- const sal_uInt16 nReqFeatureIdx = GetUShort( pLangSys+2 );
- const sal_uInt16 nCntFeature = GetUShort( pLangSys+4 );
- pLangSys += 6;
- aFeatureIndexList.push_back( nReqFeatureIdx );
- for( sal_uInt16 i = 0; i < nCntFeature; ++i )
- {
- const sal_uInt16 nFeatureIndex = GetUShort( pLangSys );
- pLangSys += 2;
- aFeatureIndexList.push_back( nFeatureIndex );
- }
- }
- if( nLangsysOffset != 0 )
- {
- const FT_Byte* pLangSys = pGsubBase + nOfsScriptList + nOfsScriptTable + nLangsysOffset;
- const sal_uInt16 nReqFeatureIdx = GetUShort( pLangSys+2 );
- const sal_uInt16 nCntFeature = GetUShort( pLangSys+4 );
- pLangSys += 6;
- aFeatureIndexList.push_back( nReqFeatureIdx );
- for( sal_uInt16 i = 0; i < nCntFeature; ++i )
- {
- const sal_uInt16 nFeatureIndex = GetUShort( pLangSys );
- pLangSys += 2;
- aFeatureIndexList.push_back( nFeatureIndex );
- }
- }
- }
- if( aFeatureIndexList.empty() )
- return true;
- UshortList aLookupIndexList;
- UshortList aLookupOffsetList;
- // parse Feature Table
- const FT_Byte* pFeatureHeader = pGsubBase + nOfsFeatureTable;
- const sal_uInt16 nCntFeature = GetUShort( pFeatureHeader );
- pFeatureHeader += 2;
- for( sal_uInt16 nFeatureIndex = 0; nFeatureIndex < nCntFeature; ++nFeatureIndex )
- {
- const sal_uLong nTag = GetUInt( pFeatureHeader+0 ); // e.g. locl/vert/trad/smpl/liga/fina/...
- const sal_uInt16 nOffset= GetUShort( pFeatureHeader+4 );
- pFeatureHeader += 6;
- // short circuit some feature lookups
- if( aFeatureIndexList[0] != nFeatureIndex ) // required feature?
- {
- const int nRequested = std::count( aFeatureIndexList.begin(), aFeatureIndexList.end(), nFeatureIndex);
- if( !nRequested ) // ignore features that are not requested
- continue;
- const int nAvailable = std::count( aReqFeatureTagList.begin(), aReqFeatureTagList.end(), nTag);
- if( !nAvailable ) // some fonts don't provide features they request!
- continue;
- }
- const FT_Byte* pFeatureTable = pGsubBase + nOfsFeatureTable + nOffset;
- const sal_uInt16 nCntLookups = GetUShort( pFeatureTable+0 );
- pFeatureTable += 2;
- for( sal_uInt16 i = 0; i < nCntLookups; ++i )
- {
- const sal_uInt16 nLookupIndex = GetUShort( pFeatureTable );
- pFeatureTable += 2;
- aLookupIndexList.push_back( nLookupIndex );
- }
- if( nCntLookups == 0 ) //### hack needed by Mincho/Gothic/Mingliu/Simsun/...
- aLookupIndexList.push_back( 0 );
- }
- // parse Lookup List
- const FT_Byte* pLookupHeader = pGsubBase + nOfsLookupList;
- const sal_uInt16 nCntLookupTable = GetUShort( pLookupHeader );
- pLookupHeader += 2;
- for( sal_uInt16 nLookupIdx = 0; nLookupIdx < nCntLookupTable; ++nLookupIdx )
- {
- const sal_uInt16 nOffset = GetUShort( pLookupHeader );
- pLookupHeader += 2;
- if( std::count( aLookupIndexList.begin(), aLookupIndexList.end(), nLookupIdx ) )
- aLookupOffsetList.push_back( nOffset );
- }
- UshortList::const_iterator lookup_it = aLookupOffsetList.begin();
- for(; lookup_it != aLookupOffsetList.end(); ++lookup_it )
- {
- const sal_uInt16 nOfsLookupTable = *lookup_it;
- const FT_Byte* pLookupTable = pGsubBase + nOfsLookupList + nOfsLookupTable;
- const sal_uInt16 eLookupType = GetUShort( pLookupTable+0 );
- const sal_uInt16 nCntLookupSubtable = GetUShort( pLookupTable+4 );
- pLookupTable += 6;
- // TODO: switch( eLookupType )
- if( eLookupType != 1 ) // TODO: once we go beyond SingleSubst
- continue;
- for( sal_uInt16 nSubTableIdx = 0; nSubTableIdx < nCntLookupSubtable; ++nSubTableIdx )
- {
- const sal_uInt16 nOfsSubLookupTable = GetUShort( pLookupTable );
- pLookupTable += 2;
- const FT_Byte* pSubLookup = pGsubBase + nOfsLookupList + nOfsLookupTable + nOfsSubLookupTable;
- const sal_uInt16 nFmtSubstitution = GetUShort( pSubLookup+0 );
- const sal_uInt16 nOfsCoverage = GetUShort( pSubLookup+2 );
- pSubLookup += 4;
- typedef std::pair<sal_uInt16,sal_uInt16> GlyphSubst;
- typedef std::vector<GlyphSubst> SubstVector;
- SubstVector aSubstVector;
- const FT_Byte* pCoverage = pGsubBase + nOfsLookupList + nOfsLookupTable + nOfsSubLookupTable + nOfsCoverage;
- const sal_uInt16 nFmtCoverage = GetUShort( pCoverage+0 );
- pCoverage += 2;
- switch( nFmtCoverage )
- {
- case 1: // Coverage Format 1
- {
- const sal_uInt16 nCntGlyph = GetUShort( pCoverage );
- pCoverage += 2;
- aSubstVector.reserve( nCntGlyph );
- for( sal_uInt16 i = 0; i < nCntGlyph; ++i )
- {
- const sal_uInt16 nGlyphId = GetUShort( pCoverage );
- pCoverage += 2;
- aSubstVector.push_back( GlyphSubst( nGlyphId, 0 ) );
- }
- }
- break;
- case 2: // Coverage Format 2
- {
- const sal_uInt16 nCntRange = GetUShort( pCoverage );
- pCoverage += 2;
- for( int i = nCntRange; --i >= 0; )
- {
- const sal_uInt32 nGlyph0 = GetUShort( pCoverage+0 );
- const sal_uInt32 nGlyph1 = GetUShort( pCoverage+2 );
- const sal_uInt16 nCovIdx = GetUShort( pCoverage+4 );
- pCoverage += 6;
- for( sal_uInt32 j = nGlyph0; j <= nGlyph1; ++j )
- aSubstVector.push_back( GlyphSubst( static_cast<sal_uInt16>(j + nCovIdx), 0 ) );
- }
- }
- break;
- }
- SubstVector::iterator it( aSubstVector.begin() );
- switch( nFmtSubstitution )
- {
- case 1: // Single Substitution Format 1
- {
- const sal_uInt16 nDeltaGlyphId = GetUShort( pSubLookup );
- pSubLookup += 2;
- for(; it != aSubstVector.end(); ++it )
- (*it).second = (*it).first + nDeltaGlyphId;
- }
- break;
- case 2: // Single Substitution Format 2
- {
- const sal_uInt16 nCntGlyph = GetUShort( pSubLookup );
- pSubLookup += 2;
- for( int i = nCntGlyph; (it != aSubstVector.end()) && (--i>=0); ++it )
- {
- const sal_uInt16 nGlyphId = GetUShort( pSubLookup );
- pSubLookup += 2;
- (*it).second = nGlyphId;
- }
- }
- break;
- }
- DBG_ASSERT( (it == aSubstVector.end()), "lookup<->coverage table mismatch" );
- // now apply the glyph substitutions that have been collected in this subtable
- for( it = aSubstVector.begin(); it != aSubstVector.end(); ++it )
- maGlyphSubstitution[ (*it).first ] = (*it).second;
- }
- }
- return true;
- }
- const unsigned char* ServerFont::GetTable(const char* pName, sal_uLong* pLength)
- {
- return mpFontInfo->GetTable( pName, pLength );
- }
- #ifdef ENABLE_GRAPHITE
- GraphiteFaceWrapper* ServerFont::GetGraphiteFace() const
- {
- return mpFontInfo->GetGraphiteFace();
- }
- #endif
- // =======================================================================
- /* vim:set shiftwidth=4 softtabstop=4 expandtab: */