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 #include <fontinstance.hxx>
  26 #include <vcl/glyphitem.hxx>
  27
  28 class CmapResult;
  29
  30 // FreetypeFontFile has the responsibility that a font file is only mapped once.
  31 // (#86621#) the old directly ft-managed solution caused it to be mapped
  32 // in up to nTTC*nSizes*nOrientation*nSynthetic times
  33 class FreetypeFontFile final
  34 {
  35 public:
  36     bool                    Map();
  37     void                    Unmap();
  38
  39     const unsigned char*    GetBuffer() const { return mpFileMap; }
  40     int                     GetFileSize() const { return mnFileSize; }
  41     const OString&          GetFileName() const { return maNativeFileName; }
  42     int                     GetLangBoost() const { return mnLangBoost; }
  43
  44 private:
  45     friend class FreetypeManager;
  46     explicit                FreetypeFontFile( const OString& rNativeFileName );
  47
  48     const OString    maNativeFileName;
  49     unsigned char*   mpFileMap;
  50     int                     mnFileSize;
  51     int                     mnRefCount;
  52     int                     mnLangBoost;
  53 };
  54
  55 // FreetypeFontInfo corresponds to an unscaled font face
  56 class FreetypeFontInfo final
  57 {
  58 public:
  59     ~FreetypeFontInfo();
  60
  61     const unsigned char*  GetTable( const char*, sal_uLong* pLength) 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     int                   GetFontFaceVariation() const  { return mnFaceVariation; }
  69     sal_IntPtr            GetFontId() const         { return mnFontId; }
  70     bool                  IsSymbolFont() const      { return maDevFontAttributes.IsSymbolFont(); }
  71     const FontAttributes& GetFontAttributes() const { return maDevFontAttributes; }
  72
  73     void                  AnnounceFont( PhysicalFontCollection* );
  74
  75     const FontCharMapRef & GetFontCharMap() const;
  76     bool GetFontCapabilities(vcl::FontCapabilities&) const;
  77
  78 private:
  79     friend class FreetypeManager;
  80     explicit FreetypeFontInfo(const FontAttributes&, FreetypeFontFile* const pFontFile,
  81                               int nFaceNum, int nFaceVariation, sal_IntPtr nFontId);
  82
  83     FT_FaceRec_*    maFaceFT;
  84     FreetypeFontFile* const mpFontFile;
  85     const int       mnFaceNum;
  86     const int       mnFaceVariation;
  87     int             mnRefCount;
  88     sal_IntPtr      mnFontId;
  89     FontAttributes  maDevFontAttributes;
  90
  91     mutable FontCharMapRef mxFontCharMap;
  92 };
  93
  94 class FreetypeFontFace : public PhysicalFontFace
  95 {
  96 private:
  97     FreetypeFontInfo*             mpFreetypeFontInfo;
  98
  99 public:
 100                             FreetypeFontFace( FreetypeFontInfo*, const FontAttributes& );
 101
 102     virtual rtl::Reference<LogicalFontInstance> CreateFontInstance( const FontSelectPattern& ) const override;
 103     virtual sal_IntPtr      GetFontId() const override { return mpFreetypeFontInfo->GetFontId(); }
 104
 105     FontCharMapRef GetFontCharMap() const override { return mpFreetypeFontInfo->GetFontCharMap(); }
 106     inline bool GetFontCapabilities(vcl::FontCapabilities&) const override;
 107 };
 108
 109 bool FreetypeFontFace::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const
 110 {
 111     return mpFreetypeFontInfo->GetFontCapabilities(rFontCapabilities);
 112 }
 113
 114 class SAL_DLLPUBLIC_RTTI FreetypeFontInstance : public LogicalFontInstance
 115 {
 116     friend rtl::Reference<LogicalFontInstance> FreetypeFontFace::CreateFontInstance(const FontSelectPattern&) const;
 117
 118     std::unique_ptr<FreetypeFont> mxFreetypeFont;
 119
 120     virtual hb_font_t* ImplInitHbFont() override;
 121     virtual bool ImplGetGlyphBoundRect(sal_GlyphId, tools::Rectangle&, bool) const override;
 122
 123 protected:
 124     explicit FreetypeFontInstance(const PhysicalFontFace& rPFF, const FontSelectPattern& rFSP);
 125
 126 public:
 127     virtual ~FreetypeFontInstance() override;
 128
 129     FreetypeFont& GetFreetypeFont() const { return *mxFreetypeFont; }
 130
 131     virtual bool GetGlyphOutline(sal_GlyphId, basegfx::B2DPolyPolygon&, bool) const override;
 132 };
 133
 134 #endif // INCLUDED_VCL_GENERIC_GLYPHS_GCACH_FTYP_HXX
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */