vcl/inc/unx/freetype_glyphcache.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VCL_GENERIC_GLYPHS_GCACH_FTYP_HXX
  21 #define INCLUDED_VCL_GENERIC_GLYPHS_GCACH_FTYP_HXX
  22
  23 #include "unx/glyphcache.hxx"
  24 #include "PhysicalFontFace.hxx"
  25
  26 // FreetypeFontFile has the responsibility that a font file is only mapped once.
  27 // (#86621#) the old directly ft-managed solution caused it to be mapped
  28 // in up to nTTC*nSizes*nOrientation*nSynthetic times
  29 class FreetypeFontFile
  30 {
  31 public:
  32     static FreetypeFontFile*      FindFontFile( const OString& rNativeFileName );
  33
  34     bool                    Map();
  35     void                    Unmap();
  36
  37     const unsigned char*    GetBuffer() const { return mpFileMap; }
  38     int                     GetFileSize() const { return mnFileSize; }
  39     const OString&          GetFileName() const { return maNativeFileName; }
  40     int                     GetLangBoost() const { return mnLangBoost; }
  41
  42 private:
  43     explicit                FreetypeFontFile( const OString& rNativeFileName );
  44
  45     const OString    maNativeFileName;
  46     unsigned char*   mpFileMap;
  47     int                     mnFileSize;
  48     int                     mnRefCount;
  49     int                     mnLangBoost;
  50 };
  51
  52 // FreetypeFontInfo corresponds to an unscaled font face
  53 class FreetypeFontInfo
  54 {
  55 public:
  56                            FreetypeFontInfo( const FontAttributes&,
  57                                const OString& rNativeFileName,
  58                                int nFaceNum, sal_IntPtr nFontId);
  59                           ~FreetypeFontInfo();
  60
  61     const unsigned char*  GetTable( const char*, sal_uLong* pLength=nullptr ) const;
  62
  63     FT_FaceRec_*          GetFaceFT();
  64     void                  ReleaseFaceFT();
  65
  66     const OString&        GetFontFileName() const   { return mpFontFile->GetFileName(); }
  67     int                   GetFontFaceIndex() const  { return mnFaceNum; }
  68     sal_IntPtr            GetFontId() const         { return mnFontId; }
  69     bool                  IsSymbolFont() const      { return maDevFontAttributes.IsSymbolFont(); }
  70     const FontAttributes& GetFontAttributes() const { return maDevFontAttributes; }
  71
  72     void                  AnnounceFont( PhysicalFontCollection* );
  73
  74     bool                  GetFontCodeRanges( CmapResult& ) const;
  75     const FontCharMapRef& GetFontCharMap();
  76
  77 private:
  78     FT_FaceRec_*    maFaceFT;
  79     FreetypeFontFile*     mpFontFile;
  80     const int       mnFaceNum;
  81     int             mnRefCount;
  82     sal_IntPtr      mnFontId;
  83     FontAttributes  maDevFontAttributes;
  84
  85     FontCharMapRef  mxFontCharMap;
  86 };
  87
  88 class FreetypeManager
  89 {
  90 public:
  91                         FreetypeManager();
  92                         ~FreetypeManager();
  93
  94     void                AddFontFile( const OString& rNormalizedName,
  95                             int nFaceNum, sal_IntPtr nFontId, const FontAttributes&);
  96     void                AnnounceFonts( PhysicalFontCollection* ) const;
  97     void                ClearFontList();
  98
  99     FreetypeFont* CreateFont( const FontSelectPattern& );
 100
 101 private:
 102     typedef std::unordered_map<sal_IntPtr,FreetypeFontInfo*> FontList;
 103     FontList            maFontList;
 104
 105     sal_IntPtr          mnMaxFontId;
 106 };
 107
 108 class FreetypeFontFace : public PhysicalFontFace
 109 {
 110 private:
 111     FreetypeFontInfo*             mpFreetypeFontInfo;
 112
 113 public:
 114                             FreetypeFontFace( FreetypeFontInfo*, const FontAttributes& );
 115
 116     virtual LogicalFontInstance* CreateFontInstance( FontSelectPattern& ) const override;
 117     virtual PhysicalFontFace* Clone() const override   { return new FreetypeFontFace( *this ); }
 118     virtual sal_IntPtr      GetFontId() const override { return mpFreetypeFontInfo->GetFontId(); }
 119 };
 120
 121 #endif // INCLUDED_VCL_GENERIC_GLYPHS_GCACH_FTYP_HXX
 122
 123 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */