1 // Copyright 2016 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXGE_CFX_FONTMGR_H_ 8 #define CORE_FXGE_CFX_FONTMGR_H_ 9 10 #include <map> 11 #include <memory> 12 13 #include "core/fxcrt/fx_memory_wrappers.h" 14 #include "core/fxcrt/fx_string.h" 15 #include "core/fxcrt/observed_ptr.h" 16 #include "core/fxcrt/retain_ptr.h" 17 #include "core/fxge/fx_freetype.h" 18 #include "third_party/base/optional.h" 19 #include "third_party/base/span.h" 20 21 class CFX_Face; 22 class CFX_FontMapper; 23 class CFX_SubstFont; 24 class SystemFontInfoIface; 25 26 class CFX_FontMgr { 27 public: 28 class FontDesc final : public Retainable, public Observable { 29 public: 30 template <typename T, typename... Args> 31 friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); 32 33 ~FontDesc() override; 34 FontData()35 pdfium::span<uint8_t> FontData() const { 36 return {m_pFontData.get(), m_Size}; 37 } 38 void SetFace(size_t index, CFX_Face* face); 39 CFX_Face* GetFace(size_t index) const; 40 41 private: 42 FontDesc(std::unique_ptr<uint8_t, FxFreeDeleter> pData, size_t size); 43 44 const size_t m_Size; 45 std::unique_ptr<uint8_t, FxFreeDeleter> const m_pFontData; 46 ObservedPtr<CFX_Face> m_TTCFaces[16]; 47 }; 48 49 static Optional<pdfium::span<const uint8_t>> GetBuiltinFont(size_t index); 50 51 CFX_FontMgr(); 52 ~CFX_FontMgr(); 53 54 RetainPtr<FontDesc> GetCachedFontDesc(const ByteString& face_name, 55 int weight, 56 bool bItalic); 57 RetainPtr<FontDesc> AddCachedFontDesc( 58 const ByteString& face_name, 59 int weight, 60 bool bItalic, 61 std::unique_ptr<uint8_t, FxFreeDeleter> pData, 62 uint32_t size); 63 64 RetainPtr<FontDesc> GetCachedTTCFontDesc(int ttc_size, uint32_t checksum); 65 RetainPtr<FontDesc> AddCachedTTCFontDesc( 66 int ttc_size, 67 uint32_t checksum, 68 std::unique_ptr<uint8_t, FxFreeDeleter> pData, 69 uint32_t size); 70 71 RetainPtr<CFX_Face> NewFixedFace(const RetainPtr<FontDesc>& pDesc, 72 pdfium::span<const uint8_t> span, 73 int face_index); 74 RetainPtr<CFX_Face> FindSubstFont(const ByteString& face_name, 75 bool bTrueType, 76 uint32_t flags, 77 int weight, 78 int italic_angle, 79 int CharsetCP, 80 CFX_SubstFont* pSubstFont); 81 82 void SetSystemFontInfo(std::unique_ptr<SystemFontInfoIface> pFontInfo); 83 84 // Always present. GetBuiltinMapper()85 CFX_FontMapper* GetBuiltinMapper() const { return m_pBuiltinMapper.get(); } 86 GetFTLibrary()87 FXFT_LibraryRec* GetFTLibrary() const { return m_FTLibrary.get(); } FTLibrarySupportsHinting()88 bool FTLibrarySupportsHinting() const { return m_FTLibrarySupportsHinting; } 89 90 private: 91 bool FreeTypeVersionSupportsHinting() const; 92 bool SetLcdFilterMode() const; 93 94 // Must come before |m_pBuiltinMapper| and |m_FaceMap|. 95 ScopedFXFTLibraryRec const m_FTLibrary; 96 std::unique_ptr<CFX_FontMapper> m_pBuiltinMapper; 97 std::map<ByteString, ObservedPtr<FontDesc>> m_FaceMap; 98 const bool m_FTLibrarySupportsHinting; 99 }; 100 101 #endif // CORE_FXGE_CFX_FONTMGR_H_ 102