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// 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.
#include <memory>
#include <vector>
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxge/fx_font.h"
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 {
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 bool IsVertWriting() const;
virtual 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 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(); }
bool IsEmbedded() const { return IsType3Font() || m_pFontFile != nullptr; }
CPDF_Dictionary* GetFontDict() const { return m_pFontDict; }
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 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) = 0;
virtual FX_RECT GetCharBBox(uint32_t charcode) = 0;
CPDF_Document* m_pDocument;
CFX_Font m_Font;
std::vector<std::unique_ptr<CFX_Font>> m_FontFallbacks;
virtual bool Load() = 0;
void LoadUnicodeMap() const; // logically const only.
void LoadPDFEncoding(CPDF_Object* pEncoding,
int& iBaseEncoding,
std::vector<CFX_ByteString>* pCharNames,
bool bEmbedded,
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 bool m_bToUnicodeLoaded;
int m_Flags;
FX_RECT m_FontBBox;
int m_StemV;
int m_Ascent;
int m_Descent;
int m_ItalicAngle;