1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_
#define CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_
#include <memory>
#include <vector>
#include "core/fxcrt/include/fx_string.h"
#include "core/fxcrt/include/fx_system.h"
#include "core/fxge/include/fx_font.h"
#define PDFFONT_FIXEDPITCH 1
#define PDFFONT_SERIF 2
#define PDFFONT_SYMBOLIC 4
#define PDFFONT_SCRIPT 8
#define PDFFONT_NONSYMBOLIC 32
#define PDFFONT_ITALIC 64
#define PDFFONT_ALLCAP 0x10000
#define PDFFONT_SMALLCAP 0x20000
#define PDFFONT_FORCEBOLD 0x40000
#define PDFFONT_USEEXTERNATTR 0x80000
class CFX_SubstFont;
class CPDF_CIDFont;
class CPDF_Dictionary;
class CPDF_Document;
class CPDF_Object;
class CPDF_StreamAcc;
class CPDF_TrueTypeFont;
class CPDF_Type1Font;
class CPDF_Type3Font;
class CPDF_ToUnicodeMap;
class CPDF_Font {
public:
static std::unique_ptr<CPDF_Font> Create(CPDF_Document* pDoc,
CPDF_Dictionary* pFontDict);
static CPDF_Font* GetStockFont(CPDF_Document* pDoc,
const CFX_ByteStringC& fontname);
static const uint32_t kInvalidCharCode = static_cast<uint32_t>(-1);
virtual ~CPDF_Font();
virtual bool IsType1Font() const;
virtual bool IsTrueTypeFont() const;
virtual bool IsType3Font() const;
virtual bool IsCIDFont() const;
virtual const CPDF_Type1Font* AsType1Font() const;
virtual CPDF_Type1Font* AsType1Font();
virtual const CPDF_TrueTypeFont* AsTrueTypeFont() const;
virtual CPDF_TrueTypeFont* AsTrueTypeFont();
virtual const CPDF_Type3Font* AsType3Font() const;
virtual CPDF_Type3Font* AsType3Font();
virtual const CPDF_CIDFont* AsCIDFont() const;
virtual CPDF_CIDFont* AsCIDFont();
virtual FX_BOOL IsVertWriting() const;
virtual FX_BOOL IsUnicodeCompatible() const;
virtual uint32_t GetNextChar(const FX_CHAR* pString,
int nStrLen,
int& offset) const;
virtual int CountChar(const FX_CHAR* pString, int size) const;
virtual int AppendChar(FX_CHAR* buf, uint32_t charcode) const;
virtual int GetCharSize(uint32_t charcode) const;
virtual int GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) = 0;
virtual int GlyphFromCharCodeExt(uint32_t charcode);
virtual CFX_WideString UnicodeFromCharCode(uint32_t charcode) const;
virtual uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;
const CFX_ByteString& GetBaseFont() const { return m_BaseFont; }
CFX_SubstFont* GetSubstFont() const { return m_Font.GetSubstFont(); }
uint32_t GetFlags() const { return m_Flags; }
FX_BOOL IsEmbedded() const { return IsType3Font() || m_pFontFile != nullptr; }
CPDF_StreamAcc* GetFontFile() const { return m_pFontFile; }
CPDF_Dictionary* GetFontDict() const { return m_pFontDict; }
FX_BOOL IsStandardFont() const;
FXFT_Face GetFace() const { return m_Font.GetFace(); }
void AppendChar(CFX_ByteString& str, uint32_t charcode) const;
void GetFontBBox(FX_RECT& rect) const { rect = m_FontBBox; }
int GetTypeAscent() const { return m_Ascent; }
int GetTypeDescent() const { return m_Descent; }
int GetItalicAngle() const { return m_ItalicAngle; }
int GetStemV() const { return m_StemV; }
int GetStringWidth(const FX_CHAR* pString, int size);
uint32_t FallbackFontFromCharcode(uint32_t charcode);
int FallbackGlyphFromCharcode(int fallbackFont, uint32_t charcode);
virtual int GetCharWidthF(uint32_t charcode, int level = 0) = 0;
virtual FX_RECT GetCharBBox(uint32_t charcode, int level = 0) = 0;
CPDF_Document* m_pDocument;
CFX_Font m_Font;
std::vector<std::unique_ptr<CFX_Font>> m_FontFallbacks;
protected:
CPDF_Font();
virtual FX_BOOL Load() = 0;
FX_BOOL Initialize();
void LoadUnicodeMap() const; // logically const only.
void LoadPDFEncoding(CPDF_Object* pEncoding,
int& iBaseEncoding,
std::vector<CFX_ByteString>* pCharNames,
FX_BOOL bEmbedded,
FX_BOOL bTrueType);
void LoadFontDescriptor(CPDF_Dictionary* pDict);
void CheckFontMetrics();
const FX_CHAR* GetAdobeCharName(int iBaseEncoding,
const std::vector<CFX_ByteString>& charnames,
int charcode);
CFX_ByteString m_BaseFont;
CPDF_StreamAcc* m_pFontFile;
CPDF_Dictionary* m_pFontDict;
mutable std::unique_ptr<CPDF_ToUnicodeMap> m_pToUnicodeMap;
mutable FX_BOOL m_bToUnicodeLoaded;
int m_Flags;
FX_RECT m_FontBBox;
int m_StemV;
int m_Ascent;
int m_Descent;
int m_ItalicAngle;
};
#endif // CORE_FPDFAPI_FPDF_FONT_INCLUDE_CPDF_FONT_H_
|
