core/fpdfapi/fpdf_font/cpdf_font.h - Issue 2392773003: Move core/fpdfapi/fpdf_font to core/fpdfapi/font

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Issue 2392773003: Move core/fpdfapi/fpdf_font to core/fpdfapi/font (Closed)

Patch Set: Created 4 years, 2 months ago

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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_FPDFAPI_FPDF_FONT_CPDF_FONT_H_

8 #define CORE_FPDFAPI_FPDF_FONT_CPDF_FONT_H_

9

10 #include <memory>

11 #include <vector>

12

13 #include "core/fxcrt/fx_string.h"

14 #include "core/fxcrt/fx_system.h"

15 #include "core/fxge/fx_font.h"

16

17 #define PDFFONT_FIXEDPITCH 1

18 #define PDFFONT_SERIF 2

19 #define PDFFONT_SYMBOLIC 4

20 #define PDFFONT_SCRIPT 8

21 #define PDFFONT_NONSYMBOLIC 32

22 #define PDFFONT_ITALIC 64

23 #define PDFFONT_ALLCAP 0x10000

24 #define PDFFONT_SMALLCAP 0x20000

25 #define PDFFONT_FORCEBOLD 0x40000

26 #define PDFFONT_USEEXTERNATTR 0x80000

27

28 class CFX_SubstFont;

29 class CPDF_CIDFont;

30 class CPDF_Dictionary;

31 class CPDF_Document;

32 class CPDF_Object;

33 class CPDF_StreamAcc;

34 class CPDF_TrueTypeFont;

35 class CPDF_Type1Font;

36 class CPDF_Type3Font;

37 class CPDF_ToUnicodeMap;

38

39 class CPDF_Font {

40 public:

41 static std::unique_ptr<CPDF_Font> Create(CPDF_Document* pDoc,

42 CPDF_Dictionary* pFontDict);

43 static CPDF_Font* GetStockFont(CPDF_Document* pDoc,

44 const CFX_ByteStringC& fontname);

45 static const uint32_t kInvalidCharCode = static_cast<uint32_t>(-1);

46

47 virtual ~CPDF_Font();

48

49 virtual bool IsType1Font() const;

50 virtual bool IsTrueTypeFont() const;

51 virtual bool IsType3Font() const;

52 virtual bool IsCIDFont() const;

53 virtual const CPDF_Type1Font* AsType1Font() const;

54 virtual CPDF_Type1Font* AsType1Font();

55 virtual const CPDF_TrueTypeFont* AsTrueTypeFont() const;

56 virtual CPDF_TrueTypeFont* AsTrueTypeFont();

57 virtual const CPDF_Type3Font* AsType3Font() const;

58 virtual CPDF_Type3Font* AsType3Font();

59 virtual const CPDF_CIDFont* AsCIDFont() const;

60 virtual CPDF_CIDFont* AsCIDFont();

61

62 virtual bool IsVertWriting() const;

63 virtual bool IsUnicodeCompatible() const;

64 virtual uint32_t GetNextChar(const FX_CHAR* pString,

65 int nStrLen,

66 int& offset) const;

67 virtual int CountChar(const FX_CHAR* pString, int size) const;

68 virtual int AppendChar(FX_CHAR* buf, uint32_t charcode) const;

69 virtual int GetCharSize(uint32_t charcode) const;

70 virtual int GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) = 0;

71 virtual int GlyphFromCharCodeExt(uint32_t charcode);

72 virtual CFX_WideString UnicodeFromCharCode(uint32_t charcode) const;

73 virtual uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;

74

75 const CFX_ByteString& GetBaseFont() const { return m_BaseFont; }

76 CFX_SubstFont* GetSubstFont() const { return m_Font.GetSubstFont(); }

77 uint32_t GetFlags() const { return m_Flags; }

78 bool IsEmbedded() const { return IsType3Font() \|\| m_pFontFile != nullptr; }

79 CPDF_StreamAcc* GetFontFile() const { return m_pFontFile; }

80 CPDF_Dictionary* GetFontDict() const { return m_pFontDict; }

81 bool IsStandardFont() const;

82 FXFT_Face GetFace() const { return m_Font.GetFace(); }

83 void AppendChar(CFX_ByteString& str, uint32_t charcode) const;

84

85 void GetFontBBox(FX_RECT& rect) const { rect = m_FontBBox; }

86 int GetTypeAscent() const { return m_Ascent; }

87 int GetTypeDescent() const { return m_Descent; }

88 int GetItalicAngle() const { return m_ItalicAngle; }

89 int GetStemV() const { return m_StemV; }

90 int GetStringWidth(const FX_CHAR* pString, int size);

91 uint32_t FallbackFontFromCharcode(uint32_t charcode);

92 int FallbackGlyphFromCharcode(int fallbackFont, uint32_t charcode);

93

94 virtual int GetCharWidthF(uint32_t charcode) = 0;

95 virtual FX_RECT GetCharBBox(uint32_t charcode) = 0;

96

97 CPDF_Document* m_pDocument;

98 CFX_Font m_Font;

99 std::vector<std::unique_ptr<CFX_Font>> m_FontFallbacks;

100

101 protected:

102 CPDF_Font();

103

104 virtual bool Load() = 0;

105

106 void LoadUnicodeMap() const; // logically const only.

107 void LoadPDFEncoding(CPDF_Object* pEncoding,

108 int& iBaseEncoding,

109 std::vector<CFX_ByteString>* pCharNames,

110 bool bEmbedded,

111 bool bTrueType);

112 void LoadFontDescriptor(CPDF_Dictionary* pDict);

113 void CheckFontMetrics();

114

115 const FX_CHAR* GetAdobeCharName(int iBaseEncoding,

116 const std::vector<CFX_ByteString>& charnames,

117 int charcode);

118

119 CFX_ByteString m_BaseFont;

120 CPDF_StreamAcc* m_pFontFile;

121 CPDF_Dictionary* m_pFontDict;

122 mutable std::unique_ptr<CPDF_ToUnicodeMap> m_pToUnicodeMap;

123 mutable bool m_bToUnicodeLoaded;

124 int m_Flags;

125 FX_RECT m_FontBBox;

126 int m_StemV;

127 int m_Ascent;

128 int m_Descent;

129 int m_ItalicAngle;

130 };

131

132 #endif // CORE_FPDFAPI_FPDF_FONT_CPDF_FONT_H_

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