Split core/include/fpdfapi/fpdf_resource.h

core/fpdfapi/fpdf_font/include/cpdf_font.h

+// 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 "core/fxcrt/include/fx_string.h"
+#include "core/fxcrt/include/fx_system.h"
+#include "core/include/fxge/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 CPDF_Font* CreateFontF(CPDF_Document* pDoc,
+                                CPDF_Dictionary* pFontDict);
+  static CPDF_Font* GetStockFont(CPDF_Document* pDoc,
+                                 const CFX_ByteStringC& fontname);
+  static const FX_DWORD kInvalidCharCode = static_cast<FX_DWORD>(-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 FX_DWORD 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, FX_DWORD charcode) const;
+  virtual int GetCharSize(FX_DWORD charcode) const;
+  virtual int GlyphFromCharCode(FX_DWORD charcode,
+                                FX_BOOL* pVertGlyph = nullptr);
+  virtual int GlyphFromCharCodeExt(FX_DWORD charcode);
+  virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const;
+  virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const;
+
+  const CFX_ByteString& GetBaseFont() const { return m_BaseFont; }
+  const CFX_SubstFont* GetSubstFont() const { return m_Font.GetSubstFont(); }
+  FX_DWORD 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, FX_DWORD 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);
+
+  virtual int GetCharWidthF(FX_DWORD charcode, int level = 0) = 0;
+  virtual FX_RECT GetCharBBox(FX_DWORD charcode, int level = 0) = 0;
+
+  CPDF_Document* m_pDocument;
+  CFX_Font m_Font;
+
+ protected:
+  CPDF_Font();
+
+  virtual FX_BOOL Load() = 0;
+
+  FX_BOOL Initialize();
+  void LoadUnicodeMap();
+  void LoadPDFEncoding(CPDF_Object* pEncoding,
+                       int& iBaseEncoding,
+                       CFX_ByteString*& pCharNames,
+                       FX_BOOL bEmbedded,
+                       FX_BOOL bTrueType);
+  void LoadFontDescriptor(CPDF_Dictionary* pDict);
+  void CheckFontMetrics();
+
+  const FX_CHAR* GetAdobeCharName(int iBaseEncoding,
+                                  const CFX_ByteString* pCharNames,
+                                  int charcode);
+
+  CFX_ByteString m_BaseFont;
+  CPDF_StreamAcc* m_pFontFile;
+  CPDF_Dictionary* m_pFontDict;
+  CPDF_ToUnicodeMap* m_pToUnicodeMap;
+  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_