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 #pragma once
  21
  22 #include <sal/config.h>
  23
  24 #include <unx/glyphcache.hxx>
  25 #include <font/PhysicalFontFace.hxx>
  26 #include <font/LogicalFontInstance.hxx>
  27
  28 #include <glyphid.hxx>
  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( OString aNativeFileName );
  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     FT_FaceRec_*          GetFaceFT();
  62     void                  ReleaseFaceFT();
  63
  64     FreetypeFontFile*     GetFontFile() const       { return mpFontFile; }
  65     const OString&        GetFontFileName() const   { return mpFontFile->GetFileName(); }
  66     int                   GetFontFaceIndex() const  { return mnFaceNum; }
  67     int                   GetFontFaceVariation() const  { return mnFaceVariation; }
  68     sal_IntPtr            GetFontId() const         { return mnFontId; }
  69     const FontAttributes& GetFontAttributes() const { return maDevFontAttributes; }
  70
  71     void                  AnnounceFont( vcl::font::PhysicalFontCollection* );
  72
  73 private:
  74     friend class FreetypeManager;
  75     explicit FreetypeFontInfo(FontAttributes , FreetypeFontFile* const pFontFile,
  76                               int nFaceNum, int nFaceVariation, sal_IntPtr nFontId);
  77
  78     FT_FaceRec_*    maFaceFT;
  79     FreetypeFontFile* const mpFontFile;
  80     const int       mnFaceNum;
  81     const int       mnFaceVariation;
  82     int             mnRefCount;
  83     sal_IntPtr      mnFontId;
  84     FontAttributes  maDevFontAttributes;
  85
  86 };
  87
  88 class FreetypeFontFace final : public vcl::font::PhysicalFontFace
  89 {
  90 private:
  91     FreetypeFontInfo*             mpFreetypeFontInfo;
  92
  93 public:
  94                             FreetypeFontFace( FreetypeFontInfo*, const FontAttributes& );
  95
  96     virtual rtl::Reference<LogicalFontInstance> CreateFontInstance(const vcl::font::FontSelectPattern&) const override;
  97     virtual sal_IntPtr      GetFontId() const override { return mpFreetypeFontInfo->GetFontId(); }
  98
  99     virtual hb_face_t* GetHbFace() const override;
 100     virtual hb_blob_t* GetHbTable(hb_tag_t nTag) const override;
 101
 102     const std::vector<hb_variation_t>& GetVariations(const LogicalFontInstance&) const override;
 103 };
 104
 105 class SAL_DLLPUBLIC_RTTI FreetypeFontInstance final : public LogicalFontInstance
 106 {
 107     friend rtl::Reference<LogicalFontInstance> FreetypeFontFace::CreateFontInstance(const vcl::font::FontSelectPattern&) const;
 108
 109     std::unique_ptr<FreetypeFont> mxFreetypeFont;
 110
 111     explicit FreetypeFontInstance(const vcl::font::PhysicalFontFace& rPFF, const vcl::font::FontSelectPattern& rFSP);
 112
 113 public:
 114     virtual ~FreetypeFontInstance() override;
 115
 116     FreetypeFont& GetFreetypeFont() const { return *mxFreetypeFont; }
 117
 118     virtual bool GetGlyphOutline(sal_GlyphId, basegfx::B2DPolyPolygon&, bool) const override;
 119 };
 120
 121 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */