1 // Copyright 2017 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_FONT_H_ 8 #define CORE_FXGE_CFX_FONT_H_ 9 10 #include <memory> 11 #include <vector> 12 13 #include "core/fxcrt/bytestring.h" 14 #include "core/fxcrt/fx_coordinates.h" 15 #include "core/fxcrt/unowned_ptr.h" 16 #include "core/fxge/fx_freetype.h" 17 18 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_ 19 #include "core/fxge/fx_font.h" 20 #endif 21 22 class CFX_FaceCache; 23 class CFX_GlyphBitmap; 24 class CFX_PathData; 25 class CFX_SubstFont; 26 class IFX_SeekableReadStream; 27 28 class CFX_Font { 29 public: 30 CFX_Font(); 31 ~CFX_Font(); 32 33 void LoadSubst(const ByteString& face_name, 34 bool bTrueType, 35 uint32_t flags, 36 int weight, 37 int italic_angle, 38 int CharsetCP, 39 bool bVertical); 40 41 bool LoadEmbedded(const uint8_t* data, uint32_t size); 42 FXFT_Face GetFace() const { return m_Face; } 43 CFX_SubstFont* GetSubstFont() const { return m_pSubstFont.get(); } 44 45 #ifdef PDF_ENABLE_XFA 46 bool LoadFile(const RetainPtr<IFX_SeekableReadStream>& pFile, int nFaceIndex); 47 48 void SetFace(FXFT_Face face); 49 void SetSubstFont(std::unique_ptr<CFX_SubstFont> subst); 50 #endif // PDF_ENABLE_XFA 51 52 const CFX_GlyphBitmap* LoadGlyphBitmap(uint32_t glyph_index, 53 bool bFontStyle, 54 const CFX_Matrix* pMatrix, 55 int dest_width, 56 int anti_alias, 57 int& text_flags) const; 58 const CFX_PathData* LoadGlyphPath(uint32_t glyph_index, int dest_width) const; 59 60 #if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_ 61 CFX_TypeFace* GetDeviceCache() const; 62 #endif 63 64 int GetGlyphWidth(uint32_t glyph_index); 65 int GetAscent() const; 66 int GetDescent() const; 67 bool GetGlyphBBox(uint32_t glyph_index, FX_RECT& bbox); 68 bool IsItalic() const; 69 bool IsBold() const; 70 bool IsFixedWidth() const; 71 bool IsVertical() const { return m_bVertical; } 72 ByteString GetPsName() const; 73 ByteString GetFamilyName() const; 74 ByteString GetFaceName() const; 75 bool IsTTFont() const; 76 bool GetBBox(FX_RECT& bbox); 77 bool IsEmbedded() const { return m_bEmbedded; } 78 uint8_t* GetSubData() const { return m_pGsubData.get(); } 79 void SetSubData(uint8_t* data) { m_pGsubData.reset(data); } 80 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ 81 void* GetPlatformFont() const { return m_pPlatformFont; } 82 void SetPlatformFont(void* font) { m_pPlatformFont = font; } 83 #endif 84 uint8_t* GetFontData() const { return m_pFontData; } 85 uint32_t GetSize() const { return m_dwSize; } 86 void AdjustMMParams(int glyph_index, int width, int weight) const; 87 88 CFX_PathData* LoadGlyphPathImpl(uint32_t glyph_index, int dest_width) const; 89 90 static const size_t kAngleSkewArraySize = 30; 91 static const char s_AngleSkew[kAngleSkewArraySize]; 92 static const size_t kWeightPowArraySize = 100; 93 static const uint8_t s_WeightPow[kWeightPowArraySize]; 94 static const uint8_t s_WeightPow_11[kWeightPowArraySize]; 95 static const uint8_t s_WeightPow_SHIFTJIS[kWeightPowArraySize]; 96 97 #ifdef PDF_ENABLE_XFA 98 protected: 99 std::unique_ptr<FXFT_StreamRec> m_pOwnedStream; 100 #endif // PDF_ENABLE_XFA 101 102 private: 103 CFX_FaceCache* GetFaceCache() const; 104 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ 105 void ReleasePlatformResource(); 106 #endif // _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ 107 void DeleteFace(); 108 void ClearFaceCache(); 109 110 FXFT_Face m_Face; 111 mutable UnownedPtr<CFX_FaceCache> m_FaceCache; 112 std::unique_ptr<CFX_SubstFont> m_pSubstFont; 113 std::vector<uint8_t> m_pFontDataAllocation; 114 uint8_t* m_pFontData; 115 std::unique_ptr<uint8_t, FxFreeDeleter> m_pGsubData; 116 uint32_t m_dwSize; 117 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ 118 void* m_pPlatformFont; 119 #endif 120 bool m_bEmbedded; 121 bool m_bVertical; 122 }; 123 124 #endif // CORE_FXGE_CFX_FONT_H_ 125
