core/fxge/include/fx_font.h - pdfium - Git at Google

 // Copyright 2014 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_FXGE_INCLUDE_FX_FONT_H_
 #define CORE_FXGE_INCLUDE_FX_FONT_H_

 #include <map>
 #include <memory>
 #include <vector>

 #include "core/fxcrt/include/fx_system.h"
 #include "core/fxge/include/fx_dib.h"
 #include "core/fxge/include/fx_freetype.h"

 typedef struct FT_FaceRec_* FXFT_Face;
 typedef void* FXFT_Library;

 class CFX_FaceCache;
 class CFX_PathData;
 class CFX_SizeGlyphCache;
 class CFX_SubstFont;
 class CTTFontDesc;

 #ifdef _SKIA_SUPPORT_
 class SkTypeface;

 using CFX_TypeFace = SkTypeface;
 #endif

 #define FXFONT_FIXED_PITCH 0x01
 #define FXFONT_SERIF 0x02
 #define FXFONT_SYMBOLIC 0x04
 #define FXFONT_SCRIPT 0x08
 #define FXFONT_ITALIC 0x40
 #define FXFONT_BOLD 0x40000
 #define FXFONT_USEEXTERNATTR 0x80000
 #define FXFONT_CIDFONT 0x100000
 #ifdef PDF_ENABLE_XFA
 #define FXFONT_EXACTMATCH 0x80000000
 #endif  // PDF_ENABLE_XFA
 #define FXFONT_ANSI_CHARSET 0
 #define FXFONT_DEFAULT_CHARSET 1
 #define FXFONT_SYMBOL_CHARSET 2
 #define FXFONT_SHIFTJIS_CHARSET 128
 #define FXFONT_HANGEUL_CHARSET 129
 #define FXFONT_GB2312_CHARSET 134
 #define FXFONT_CHINESEBIG5_CHARSET 136
 #define FXFONT_THAI_CHARSET 222
 #define FXFONT_EASTEUROPE_CHARSET 238
 #define FXFONT_RUSSIAN_CHARSET 204
 #define FXFONT_GREEK_CHARSET 161
 #define FXFONT_TURKISH_CHARSET 162
 #define FXFONT_HEBREW_CHARSET 177
 #define FXFONT_ARABIC_CHARSET 178
 #define FXFONT_BALTIC_CHARSET 186
 #define FXFONT_FF_FIXEDPITCH 1
 #define FXFONT_FF_ROMAN (1 << 4)
 #define FXFONT_FF_SCRIPT (4 << 4)
 #define FXFONT_FW_NORMAL 400
 #define FXFONT_FW_BOLD 700

 #define CHARSET_FLAG_ANSI 1
 #define CHARSET_FLAG_SYMBOL 2
 #define CHARSET_FLAG_SHIFTJIS 4
 #define CHARSET_FLAG_BIG5 8
 #define CHARSET_FLAG_GB 16
 #define CHARSET_FLAG_KOREAN 32

 #define GET_TT_SHORT(w) (uint16_t)(((w)[0] << 8) | (w)[1])
 #define GET_TT_LONG(w) \
   (uint32_t)(((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])

 class CFX_Font {
  public:
   CFX_Font();
   ~CFX_Font();

   void LoadSubst(const CFX_ByteString& face_name,
                  FX_BOOL bTrueType,
                  uint32_t flags,
                  int weight,
                  int italic_angle,
                  int CharsetCP,
                  FX_BOOL bVertical = FALSE);

   FX_BOOL LoadEmbedded(const uint8_t* data, uint32_t size);
   FXFT_Face GetFace() const { return m_Face; }
   CFX_SubstFont* GetSubstFont() const { return m_pSubstFont.get(); }

 #ifdef PDF_ENABLE_XFA
   FX_BOOL LoadFile(IFX_FileRead* pFile,
                    int nFaceIndex = 0,
                    int* pFaceCount = nullptr);

   FX_BOOL LoadClone(const CFX_Font* pFont);
   void SetFace(FXFT_Face face) { m_Face = face; }
   void SetSubstFont(std::unique_ptr<CFX_SubstFont> subst) {
     m_pSubstFont = std::move(subst);
   }
 #endif  // PDF_ENABLE_XFA

   CFX_PathData* LoadGlyphPath(uint32_t glyph_index, int dest_width = 0);
   int GetGlyphWidth(uint32_t glyph_index);
   int GetAscent() const;
   int GetDescent() const;
   FX_BOOL GetGlyphBBox(uint32_t glyph_index, FX_RECT& bbox);
   FX_BOOL IsItalic() const;
   FX_BOOL IsBold() const;
   FX_BOOL IsFixedWidth() const;
   FX_BOOL IsVertical() const { return m_bVertical; }
   CFX_ByteString GetPsName() const;
   CFX_ByteString GetFamilyName() const;
   CFX_ByteString GetFaceName() const;
   FX_BOOL IsTTFont() const;
   FX_BOOL GetBBox(FX_RECT& bbox);
   int GetHeight() const;
   int GetULPos() const;
   int GetULthickness() const;
   int GetMaxAdvanceWidth() const;
   FX_BOOL IsEmbedded() const { return m_bEmbedded; }
   uint8_t* GetSubData() const { return m_pGsubData; }
   void SetSubData(uint8_t* data) { m_pGsubData = data; }
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
   void* GetPlatformFont() const { return m_pPlatformFont; }
   void SetPlatformFont(void* font) { m_pPlatformFont = font; }
 #endif
   uint8_t* GetFontData() const { return m_pFontData; }
   uint32_t GetSize() const { return m_dwSize; }
   void AdjustMMParams(int glyph_index, int width, int weight);

 #ifdef PDF_ENABLE_XFA
  protected:
   CFX_BinaryBuf m_OtfFontData;
   FX_BOOL m_bLogic;
   void* m_pOwnedStream;
 #endif  // PDF_ENABLE_XFA

  private:
   void ReleasePlatformResource();
   void DeleteFace();

   FXFT_Face m_Face;
   std::unique_ptr<CFX_SubstFont> m_pSubstFont;
   std::vector<uint8_t> m_pFontDataAllocation;
   uint8_t* m_pFontData;
   uint8_t* m_pGsubData;
   uint32_t m_dwSize;
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
   void* m_pPlatformFont;
 #endif
   FX_BOOL m_bEmbedded;
   FX_BOOL m_bVertical;
 };

 #define ENCODING_INTERNAL 0
 #define ENCODING_UNICODE 1

 #ifdef PDF_ENABLE_XFA
 #define FXFM_ENC_TAG(a, b, c, d)                                          \
   (((uint32_t)(a) << 24) | ((uint32_t)(b) << 16) | ((uint32_t)(c) << 8) | \
    (uint32_t)(d))
 #define FXFM_ENCODING_NONE FXFM_ENC_TAG(0, 0, 0, 0)
 #define FXFM_ENCODING_MS_SYMBOL FXFM_ENC_TAG('s', 'y', 'm', 'b')
 #define FXFM_ENCODING_UNICODE FXFM_ENC_TAG('u', 'n', 'i', 'c')
 #define FXFM_ENCODING_MS_SJIS FXFM_ENC_TAG('s', 'j', 'i', 's')
 #define FXFM_ENCODING_MS_GB2312 FXFM_ENC_TAG('g', 'b', ' ', ' ')
 #define FXFM_ENCODING_MS_BIG5 FXFM_ENC_TAG('b', 'i', 'g', '5')
 #define FXFM_ENCODING_MS_WANSUNG FXFM_ENC_TAG('w', 'a', 'n', 's')
 #define FXFM_ENCODING_MS_JOHAB FXFM_ENC_TAG('j', 'o', 'h', 'a')
 #define FXFM_ENCODING_ADOBE_STANDARD FXFM_ENC_TAG('A', 'D', 'O', 'B')
 #define FXFM_ENCODING_ADOBE_EXPERT FXFM_ENC_TAG('A', 'D', 'B', 'E')
 #define FXFM_ENCODING_ADOBE_CUSTOM FXFM_ENC_TAG('A', 'D', 'B', 'C')
 #define FXFM_ENCODING_ADOBE_LATIN_1 FXFM_ENC_TAG('l', 'a', 't', '1')
 #define FXFM_ENCODING_OLD_LATIN_2 FXFM_ENC_TAG('l', 'a', 't', '2')
 #define FXFM_ENCODING_APPLE_ROMAN FXFM_ENC_TAG('a', 'r', 'm', 'n')
 #endif  // PDF_ENABLE_XFA

 class CFX_UnicodeEncoding {
  public:
   explicit CFX_UnicodeEncoding(CFX_Font* pFont);
   virtual ~CFX_UnicodeEncoding();

   virtual uint32_t GlyphFromCharCode(uint32_t charcode);

  protected:
   // Unowned, not nullptr.
   CFX_Font* m_pFont;
 };

 #ifdef PDF_ENABLE_XFA
 class CFX_UnicodeEncodingEx : public CFX_UnicodeEncoding {
  public:
   CFX_UnicodeEncodingEx(CFX_Font* pFont, uint32_t EncodingID);
   ~CFX_UnicodeEncodingEx() override;

   // CFX_UnicodeEncoding:
   uint32_t GlyphFromCharCode(uint32_t charcode) override;

   uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;

  private:
   uint32_t m_nEncodingID;
 };
 CFX_UnicodeEncodingEx* FX_CreateFontEncodingEx(
     CFX_Font* pFont,
     uint32_t nEncodingID = FXFM_ENCODING_NONE);
 #endif  // PDF_ENABLE_XFA

 #define FXFONT_SUBST_MM 0x01
 #define FXFONT_SUBST_GLYPHPATH 0x04
 #define FXFONT_SUBST_CLEARTYPE 0x08
 #define FXFONT_SUBST_TRANSFORM 0x10
 #define FXFONT_SUBST_NONSYMBOL 0x20
 #define FXFONT_SUBST_EXACT 0x40
 #define FXFONT_SUBST_STANDARD 0x80

 class CFX_SubstFont {
  public:
   CFX_SubstFont();

   void* m_ExtHandle;
   CFX_ByteString m_Family;
   int m_Charset;
   uint32_t m_SubstFlags;
   int m_Weight;
   int m_ItalicAngle;
   bool m_bSubstCJK;
   int m_WeightCJK;
   bool m_bItalicCJK;
 };

 #define FX_FONT_FLAG_SERIF 0x01
 #define FX_FONT_FLAG_FIXEDPITCH 0x02
 #define FX_FONT_FLAG_ITALIC 0x04
 #define FX_FONT_FLAG_BOLD 0x08
 #define FX_FONT_FLAG_SYMBOLIC_SYMBOL 0x10
 #define FX_FONT_FLAG_SYMBOLIC_DINGBATS 0x20
 #define FX_FONT_FLAG_MULTIPLEMASTER 0x40

 class CTTFontDesc {
  public:
   CTTFontDesc() {
     m_Type = 0;
     m_pFontData = nullptr;
     m_RefCount = 0;
   }
   ~CTTFontDesc();
   // ret < 0, releaseface not appropriate for this object.
   // ret == 0, object released
   // ret > 0, object still alive, other referrers.
   int ReleaseFace(FXFT_Face face);
   int m_Type;
   union {
     struct {
       FX_BOOL m_bItalic;
       FX_BOOL m_bBold;
       FXFT_Face m_pFace;
     } m_SingleFace;
     struct {
       FXFT_Face m_pFaces[16];
     } m_TTCFace;
   };
   uint8_t* m_pFontData;
   int m_RefCount;
 };

 class CFX_FontFaceInfo {
  public:
   CFX_FontFaceInfo(CFX_ByteString filePath,
                    CFX_ByteString faceName,
                    CFX_ByteString fontTables,
                    uint32_t fontOffset,
                    uint32_t fileSize);

   const CFX_ByteString m_FilePath;
   const CFX_ByteString m_FaceName;
   const CFX_ByteString m_FontTables;
   const uint32_t m_FontOffset;
   const uint32_t m_FileSize;
   uint32_t m_Styles;
   uint32_t m_Charsets;
 };

 class CFX_CountedFaceCache {
  public:
   CFX_FaceCache* m_Obj;
   uint32_t m_nCount;
 };

 class CFX_FontCache {
  public:
   CFX_FontCache();
   ~CFX_FontCache();
   CFX_FaceCache* GetCachedFace(CFX_Font* pFont);
   void ReleaseCachedFace(CFX_Font* pFont);
   void FreeCache(FX_BOOL bRelease = FALSE);
 #ifdef _SKIA_SUPPORT_
   CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
 #endif

  private:
   using CFX_FTCacheMap = std::map<FXFT_Face, CFX_CountedFaceCache*>;
   CFX_FTCacheMap m_FTFaceMap;
   CFX_FTCacheMap m_ExtFaceMap;
 };

 class CFX_AutoFontCache {
  public:
   CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont)
       : m_pFontCache(pFontCache), m_pFont(pFont) {}
   ~CFX_AutoFontCache() { m_pFontCache->ReleaseCachedFace(m_pFont); }
   CFX_FontCache* m_pFontCache;
   CFX_Font* m_pFont;
 };

 class CFX_GlyphBitmap {
  public:
   int m_Top;
   int m_Left;
   CFX_DIBitmap m_Bitmap;
 };

 class CFX_FaceCache {
  public:
   explicit CFX_FaceCache(FXFT_Face face);
   ~CFX_FaceCache();
   const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont,
                                          uint32_t glyph_index,
                                          FX_BOOL bFontStyle,
                                          const CFX_Matrix* pMatrix,
                                          int dest_width,
                                          int anti_alias,
                                          int& text_flags);
   const CFX_PathData* LoadGlyphPath(CFX_Font* pFont,
                                     uint32_t glyph_index,
                                     int dest_width);

 #ifdef _SKIA_SUPPORT_
   CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
 #endif

  private:
   CFX_GlyphBitmap* RenderGlyph(CFX_Font* pFont,
                                uint32_t glyph_index,
                                FX_BOOL bFontStyle,
                                const CFX_Matrix* pMatrix,
                                int dest_width,
                                int anti_alias);
   CFX_GlyphBitmap* RenderGlyph_Nativetext(CFX_Font* pFont,
                                           uint32_t glyph_index,
                                           const CFX_Matrix* pMatrix,
                                           int dest_width,
                                           int anti_alias);
   CFX_GlyphBitmap* LookUpGlyphBitmap(CFX_Font* pFont,
                                      const CFX_Matrix* pMatrix,
                                      const CFX_ByteString& FaceGlyphsKey,
                                      uint32_t glyph_index,
                                      FX_BOOL bFontStyle,
                                      int dest_width,
                                      int anti_alias);
   void InitPlatform();
   void DestroyPlatform();

   FXFT_Face const m_Face;
   std::map<CFX_ByteString, CFX_SizeGlyphCache*> m_SizeMap;
   std::map<uint32_t, CFX_PathData*> m_PathMap;
   CFX_DIBitmap* m_pBitmap;
 #ifdef _SKIA_SUPPORT_
   CFX_TypeFace* m_pTypeface;
 #endif
 };

 struct FXTEXT_GLYPHPOS {
   const CFX_GlyphBitmap* m_pGlyph;
   int m_OriginX;
   int m_OriginY;
   FX_FLOAT m_fOriginX;
   FX_FLOAT m_fOriginY;
 };

 FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs,
                            int anti_alias,
                            FX_FLOAT retinaScaleX = 1.0f,
                            FX_FLOAT retinaScaleY = 1.0f);

 CFX_ByteString GetNameFromTT(const uint8_t* name_table,
                              uint32_t name_table_size,
                              uint32_t name);

 int PDF_GetStandardFontName(CFX_ByteString* name);

 #endif  // CORE_FXGE_INCLUDE_FX_FONT_H_
	// Copyright 2014 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_FXGE_INCLUDE_FX_FONT_H_
	#define CORE_FXGE_INCLUDE_FX_FONT_H_

	#include <map>
	#include <memory>
	#include <vector>

	#include "core/fxcrt/include/fx_system.h"
	#include "core/fxge/include/fx_dib.h"
	#include "core/fxge/include/fx_freetype.h"

	typedef struct FT_FaceRec_* FXFT_Face;
	typedef void* FXFT_Library;

	class CFX_FaceCache;
	class CFX_PathData;
	class CFX_SizeGlyphCache;
	class CFX_SubstFont;
	class CTTFontDesc;

	#ifdef _SKIA_SUPPORT_
	class SkTypeface;

	using CFX_TypeFace = SkTypeface;
	#endif

	#define FXFONT_FIXED_PITCH 0x01
	#define FXFONT_SERIF 0x02
	#define FXFONT_SYMBOLIC 0x04
	#define FXFONT_SCRIPT 0x08
	#define FXFONT_ITALIC 0x40
	#define FXFONT_BOLD 0x40000
	#define FXFONT_USEEXTERNATTR 0x80000
	#define FXFONT_CIDFONT 0x100000
	#ifdef PDF_ENABLE_XFA
	#define FXFONT_EXACTMATCH 0x80000000
	#endif // PDF_ENABLE_XFA
	#define FXFONT_ANSI_CHARSET 0
	#define FXFONT_DEFAULT_CHARSET 1
	#define FXFONT_SYMBOL_CHARSET 2
	#define FXFONT_SHIFTJIS_CHARSET 128
	#define FXFONT_HANGEUL_CHARSET 129
	#define FXFONT_GB2312_CHARSET 134
	#define FXFONT_CHINESEBIG5_CHARSET 136
	#define FXFONT_THAI_CHARSET 222
	#define FXFONT_EASTEUROPE_CHARSET 238
	#define FXFONT_RUSSIAN_CHARSET 204
	#define FXFONT_GREEK_CHARSET 161
	#define FXFONT_TURKISH_CHARSET 162
	#define FXFONT_HEBREW_CHARSET 177
	#define FXFONT_ARABIC_CHARSET 178
	#define FXFONT_BALTIC_CHARSET 186
	#define FXFONT_FF_FIXEDPITCH 1
	#define FXFONT_FF_ROMAN (1 << 4)
	#define FXFONT_FF_SCRIPT (4 << 4)
	#define FXFONT_FW_NORMAL 400
	#define FXFONT_FW_BOLD 700

	#define CHARSET_FLAG_ANSI 1
	#define CHARSET_FLAG_SYMBOL 2
	#define CHARSET_FLAG_SHIFTJIS 4
	#define CHARSET_FLAG_BIG5 8
	#define CHARSET_FLAG_GB 16
	#define CHARSET_FLAG_KOREAN 32

	#define GET_TT_SHORT(w) (uint16_t)(((w)[0] << 8) \| (w)[1])
	#define GET_TT_LONG(w) \
	(uint32_t)(((w)[0] << 24) \| ((w)[1] << 16) \| ((w)[2] << 8) \| (w)[3])

	class CFX_Font {
	public:
	CFX_Font();
	~CFX_Font();

	void LoadSubst(const CFX_ByteString& face_name,
	FX_BOOL bTrueType,
	uint32_t flags,
	int weight,
	int italic_angle,
	int CharsetCP,
	FX_BOOL bVertical = FALSE);

	FX_BOOL LoadEmbedded(const uint8_t* data, uint32_t size);
	FXFT_Face GetFace() const { return m_Face; }
	CFX_SubstFont* GetSubstFont() const { return m_pSubstFont.get(); }

	#ifdef PDF_ENABLE_XFA
	FX_BOOL LoadFile(IFX_FileRead* pFile,
	int nFaceIndex = 0,
	int* pFaceCount = nullptr);

	FX_BOOL LoadClone(const CFX_Font* pFont);
	void SetFace(FXFT_Face face) { m_Face = face; }
	void SetSubstFont(std::unique_ptr<CFX_SubstFont> subst) {
	m_pSubstFont = std::move(subst);
	}
	#endif // PDF_ENABLE_XFA

	CFX_PathData* LoadGlyphPath(uint32_t glyph_index, int dest_width = 0);
	int GetGlyphWidth(uint32_t glyph_index);
	int GetAscent() const;
	int GetDescent() const;
	FX_BOOL GetGlyphBBox(uint32_t glyph_index, FX_RECT& bbox);
	FX_BOOL IsItalic() const;
	FX_BOOL IsBold() const;
	FX_BOOL IsFixedWidth() const;
	FX_BOOL IsVertical() const { return m_bVertical; }
	CFX_ByteString GetPsName() const;
	CFX_ByteString GetFamilyName() const;
	CFX_ByteString GetFaceName() const;
	FX_BOOL IsTTFont() const;
	FX_BOOL GetBBox(FX_RECT& bbox);
	int GetHeight() const;
	int GetULPos() const;
	int GetULthickness() const;
	int GetMaxAdvanceWidth() const;
	FX_BOOL IsEmbedded() const { return m_bEmbedded; }
	uint8_t* GetSubData() const { return m_pGsubData; }
	void SetSubData(uint8_t* data) { m_pGsubData = data; }
	#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
	void* GetPlatformFont() const { return m_pPlatformFont; }
	void SetPlatformFont(void* font) { m_pPlatformFont = font; }
	#endif
	uint8_t* GetFontData() const { return m_pFontData; }
	uint32_t GetSize() const { return m_dwSize; }
	void AdjustMMParams(int glyph_index, int width, int weight);

	#ifdef PDF_ENABLE_XFA
	protected:
	CFX_BinaryBuf m_OtfFontData;
	FX_BOOL m_bLogic;
	void* m_pOwnedStream;
	#endif // PDF_ENABLE_XFA

	private:
	void ReleasePlatformResource();
	void DeleteFace();

	FXFT_Face m_Face;
	std::unique_ptr<CFX_SubstFont> m_pSubstFont;
	std::vector<uint8_t> m_pFontDataAllocation;
	uint8_t* m_pFontData;
	uint8_t* m_pGsubData;
	uint32_t m_dwSize;
	#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
	void* m_pPlatformFont;
	#endif
	FX_BOOL m_bEmbedded;
	FX_BOOL m_bVertical;
	};

	#define ENCODING_INTERNAL 0
	#define ENCODING_UNICODE 1

	#ifdef PDF_ENABLE_XFA
	#define FXFM_ENC_TAG(a, b, c, d) \
	(((uint32_t)(a) << 24) \| ((uint32_t)(b) << 16) \| ((uint32_t)(c) << 8) \| \
	(uint32_t)(d))
	#define FXFM_ENCODING_NONE FXFM_ENC_TAG(0, 0, 0, 0)
	#define FXFM_ENCODING_MS_SYMBOL FXFM_ENC_TAG('s', 'y', 'm', 'b')
	#define FXFM_ENCODING_UNICODE FXFM_ENC_TAG('u', 'n', 'i', 'c')
	#define FXFM_ENCODING_MS_SJIS FXFM_ENC_TAG('s', 'j', 'i', 's')
	#define FXFM_ENCODING_MS_GB2312 FXFM_ENC_TAG('g', 'b', ' ', ' ')
	#define FXFM_ENCODING_MS_BIG5 FXFM_ENC_TAG('b', 'i', 'g', '5')
	#define FXFM_ENCODING_MS_WANSUNG FXFM_ENC_TAG('w', 'a', 'n', 's')
	#define FXFM_ENCODING_MS_JOHAB FXFM_ENC_TAG('j', 'o', 'h', 'a')
	#define FXFM_ENCODING_ADOBE_STANDARD FXFM_ENC_TAG('A', 'D', 'O', 'B')
	#define FXFM_ENCODING_ADOBE_EXPERT FXFM_ENC_TAG('A', 'D', 'B', 'E')
	#define FXFM_ENCODING_ADOBE_CUSTOM FXFM_ENC_TAG('A', 'D', 'B', 'C')
	#define FXFM_ENCODING_ADOBE_LATIN_1 FXFM_ENC_TAG('l', 'a', 't', '1')
	#define FXFM_ENCODING_OLD_LATIN_2 FXFM_ENC_TAG('l', 'a', 't', '2')
	#define FXFM_ENCODING_APPLE_ROMAN FXFM_ENC_TAG('a', 'r', 'm', 'n')
	#endif // PDF_ENABLE_XFA

	class CFX_UnicodeEncoding {
	public:
	explicit CFX_UnicodeEncoding(CFX_Font* pFont);
	virtual ~CFX_UnicodeEncoding();

	virtual uint32_t GlyphFromCharCode(uint32_t charcode);

	protected:
	// Unowned, not nullptr.
	CFX_Font* m_pFont;
	};

	#ifdef PDF_ENABLE_XFA
	class CFX_UnicodeEncodingEx : public CFX_UnicodeEncoding {
	public:
	CFX_UnicodeEncodingEx(CFX_Font* pFont, uint32_t EncodingID);
	~CFX_UnicodeEncodingEx() override;

	// CFX_UnicodeEncoding:
	uint32_t GlyphFromCharCode(uint32_t charcode) override;

	uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;

	private:
	uint32_t m_nEncodingID;
	};
	CFX_UnicodeEncodingEx* FX_CreateFontEncodingEx(
	CFX_Font* pFont,
	uint32_t nEncodingID = FXFM_ENCODING_NONE);
	#endif // PDF_ENABLE_XFA

	#define FXFONT_SUBST_MM 0x01
	#define FXFONT_SUBST_GLYPHPATH 0x04
	#define FXFONT_SUBST_CLEARTYPE 0x08
	#define FXFONT_SUBST_TRANSFORM 0x10
	#define FXFONT_SUBST_NONSYMBOL 0x20
	#define FXFONT_SUBST_EXACT 0x40
	#define FXFONT_SUBST_STANDARD 0x80

	class CFX_SubstFont {
	public:
	CFX_SubstFont();

	void* m_ExtHandle;
	CFX_ByteString m_Family;
	int m_Charset;
	uint32_t m_SubstFlags;
	int m_Weight;
	int m_ItalicAngle;
	bool m_bSubstCJK;
	int m_WeightCJK;
	bool m_bItalicCJK;
	};

	#define FX_FONT_FLAG_SERIF 0x01
	#define FX_FONT_FLAG_FIXEDPITCH 0x02
	#define FX_FONT_FLAG_ITALIC 0x04
	#define FX_FONT_FLAG_BOLD 0x08
	#define FX_FONT_FLAG_SYMBOLIC_SYMBOL 0x10
	#define FX_FONT_FLAG_SYMBOLIC_DINGBATS 0x20
	#define FX_FONT_FLAG_MULTIPLEMASTER 0x40

	class CTTFontDesc {
	public:
	CTTFontDesc() {
	m_Type = 0;
	m_pFontData = nullptr;
	m_RefCount = 0;
	}
	~CTTFontDesc();
	// ret < 0, releaseface not appropriate for this object.
	// ret == 0, object released
	// ret > 0, object still alive, other referrers.
	int ReleaseFace(FXFT_Face face);
	int m_Type;
	union {
	struct {
	FX_BOOL m_bItalic;
	FX_BOOL m_bBold;
	FXFT_Face m_pFace;
	} m_SingleFace;
	struct {
	FXFT_Face m_pFaces[16];
	} m_TTCFace;
	};
	uint8_t* m_pFontData;
	int m_RefCount;
	};

	class CFX_FontFaceInfo {
	public:
	CFX_FontFaceInfo(CFX_ByteString filePath,
	CFX_ByteString faceName,
	CFX_ByteString fontTables,
	uint32_t fontOffset,
	uint32_t fileSize);

	const CFX_ByteString m_FilePath;
	const CFX_ByteString m_FaceName;
	const CFX_ByteString m_FontTables;
	const uint32_t m_FontOffset;
	const uint32_t m_FileSize;
	uint32_t m_Styles;
	uint32_t m_Charsets;
	};

	class CFX_CountedFaceCache {
	public:
	CFX_FaceCache* m_Obj;
	uint32_t m_nCount;
	};

	class CFX_FontCache {
	public:
	CFX_FontCache();
	~CFX_FontCache();
	CFX_FaceCache* GetCachedFace(CFX_Font* pFont);
	void ReleaseCachedFace(CFX_Font* pFont);
	void FreeCache(FX_BOOL bRelease = FALSE);
	#ifdef _SKIA_SUPPORT_
	CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
	#endif

	private:
	using CFX_FTCacheMap = std::map<FXFT_Face, CFX_CountedFaceCache*>;
	CFX_FTCacheMap m_FTFaceMap;
	CFX_FTCacheMap m_ExtFaceMap;
	};

	class CFX_AutoFontCache {
	public:
	CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont)
	: m_pFontCache(pFontCache), m_pFont(pFont) {}
	~CFX_AutoFontCache() { m_pFontCache->ReleaseCachedFace(m_pFont); }
	CFX_FontCache* m_pFontCache;
	CFX_Font* m_pFont;
	};

	class CFX_GlyphBitmap {
	public:
	int m_Top;
	int m_Left;
	CFX_DIBitmap m_Bitmap;
	};

	class CFX_FaceCache {
	public:
	explicit CFX_FaceCache(FXFT_Face face);
	~CFX_FaceCache();
	const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont,
	uint32_t glyph_index,
	FX_BOOL bFontStyle,
	const CFX_Matrix* pMatrix,
	int dest_width,
	int anti_alias,
	int& text_flags);
	const CFX_PathData* LoadGlyphPath(CFX_Font* pFont,
	uint32_t glyph_index,
	int dest_width);

	#ifdef _SKIA_SUPPORT_
	CFX_TypeFace* GetDeviceCache(CFX_Font* pFont);
	#endif

	private:
	CFX_GlyphBitmap* RenderGlyph(CFX_Font* pFont,
	uint32_t glyph_index,
	FX_BOOL bFontStyle,
	const CFX_Matrix* pMatrix,
	int dest_width,
	int anti_alias);
	CFX_GlyphBitmap* RenderGlyph_Nativetext(CFX_Font* pFont,
	uint32_t glyph_index,
	const CFX_Matrix* pMatrix,
	int dest_width,
	int anti_alias);
	CFX_GlyphBitmap* LookUpGlyphBitmap(CFX_Font* pFont,
	const CFX_Matrix* pMatrix,
	const CFX_ByteString& FaceGlyphsKey,
	uint32_t glyph_index,
	FX_BOOL bFontStyle,
	int dest_width,
	int anti_alias);
	void InitPlatform();
	void DestroyPlatform();

	FXFT_Face const m_Face;
	std::map<CFX_ByteString, CFX_SizeGlyphCache*> m_SizeMap;
	std::map<uint32_t, CFX_PathData*> m_PathMap;
	CFX_DIBitmap* m_pBitmap;
	#ifdef _SKIA_SUPPORT_
	CFX_TypeFace* m_pTypeface;
	#endif
	};

	struct FXTEXT_GLYPHPOS {
	const CFX_GlyphBitmap* m_pGlyph;
	int m_OriginX;
	int m_OriginY;
	FX_FLOAT m_fOriginX;
	FX_FLOAT m_fOriginY;
	};

	FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs,
	int anti_alias,
	FX_FLOAT retinaScaleX = 1.0f,
	FX_FLOAT retinaScaleY = 1.0f);

	CFX_ByteString GetNameFromTT(const uint8_t* name_table,
	uint32_t name_table_size,
	uint32_t name);

	int PDF_GetStandardFontName(CFX_ByteString* name);

	#endif // CORE_FXGE_INCLUDE_FX_FONT_H_