// 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_INCLUDE_FXGE_FX_FONT_H_ #define CORE_INCLUDE_FXGE_FX_FONT_H_ #include <map> #include "../fxcrt/fx_system.h" #include "fx_dib.h" typedef struct FT_FaceRec_* FXFT_Face; typedef void* FXFT_Library; class IFX_FontEncoding; class CFX_PathData; class CFX_SubstFont; class CFX_FaceCache; class CFX_FontMapper; class IFX_SystemFontInfo; class CFontFileFaceInfo; #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 #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 class CFX_Font { public: CFX_Font(); ~CFX_Font(); FX_BOOL LoadSubst(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, int weight, int italic_angle, int CharsetCP, FX_BOOL bVertical = FALSE); FX_BOOL LoadEmbedded(const uint8_t* data, FX_DWORD size); FX_BOOL LoadFile(IFX_FileRead* pFile); FXFT_Face GetFace() const { return m_Face; } const CFX_SubstFont* GetSubstFont() const { return m_pSubstFont; } CFX_PathData* LoadGlyphPath(FX_DWORD glyph_index, int dest_width = 0); int GetGlyphWidth(FX_DWORD glyph_index); int GetAscent() const; int GetDescent() const; FX_BOOL GetGlyphBBox(FX_DWORD glyph_index, FX_RECT& bbox); FX_BOOL IsItalic(); FX_BOOL IsBold(); FX_BOOL IsFixedWidth(); FX_BOOL IsVertical() const { return m_bVertical; } CFX_WideString GetPsName() const; CFX_ByteString GetFamilyName() const; CFX_ByteString GetFaceName() const; FX_BOOL IsTTFont(); FX_BOOL GetBBox(FX_RECT& bbox); int GetHeight(); int GetULPos(); int GetULthickness(); int GetMaxAdvanceWidth(); FXFT_Face m_Face; CFX_SubstFont* m_pSubstFont; FX_BOOL IsEmbedded() { return m_bEmbedded; } void AdjustMMParams(int glyph_index, int width, int weight); uint8_t* m_pFontDataAllocation; uint8_t* m_pFontData; uint8_t* m_pGsubData; FX_DWORD m_dwSize; CFX_BinaryBuf m_OtfFontData; void* m_hHandle; void* m_pPlatformFont; void* m_pPlatformFontCollection; void* m_pDwFont; FX_BOOL m_bDwLoaded; void ReleasePlatformResource(); void DeleteFace(); protected: FX_BOOL m_bEmbedded; FX_BOOL m_bVertical; void* m_pOwnedStream; }; #define ENCODING_INTERNAL 0 #define ENCODING_UNICODE 1 class IFX_FontEncoding { public: virtual ~IFX_FontEncoding() {} virtual FX_DWORD GlyphFromCharCode(FX_DWORD charcode) = 0; virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const = 0; virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const = 0; }; IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont); #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; FX_DWORD m_SubstFlags; int m_Weight; int m_ItalicAngle; FX_BOOL m_bSubstOfCJK; int m_WeightCJK; FX_BOOL m_bItlicCJK; }; #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 typedef struct { const uint8_t* m_pFontData; FX_DWORD m_dwSize; } FoxitFonts; class CFX_FontMgr { public: CFX_FontMgr(); ~CFX_FontMgr(); void InitFTLibrary(); FXFT_Face GetCachedFace(const CFX_ByteString& face_name, int weight, FX_BOOL bItalic, uint8_t*& pFontData); FXFT_Face AddCachedFace(const CFX_ByteString& face_name, int weight, FX_BOOL bItalic, uint8_t* pData, FX_DWORD size, int face_index); FXFT_Face GetCachedTTCFace(int ttc_size, FX_DWORD checksum, int font_offset, uint8_t*& pFontData); FXFT_Face AddCachedTTCFace(int ttc_size, FX_DWORD checksum, uint8_t* pData, FX_DWORD size, int font_offset); FXFT_Face GetFileFace(const FX_CHAR* filename, int face_index); FXFT_Face GetFixedFace(const uint8_t* pData, FX_DWORD size, int face_index); void ReleaseFace(FXFT_Face face); void SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo); FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont); void FreeCache(); FX_BOOL GetStandardFont(const uint8_t*& pFontData, FX_DWORD& size, int index); CFX_FontMapper* m_pBuiltinMapper; CFX_MapByteStringToPtr m_FaceMap; FXFT_Library m_FTLibrary; FoxitFonts m_ExternalFonts[16]; }; class IFX_FontEnumerator { public: virtual ~IFX_FontEnumerator() {} virtual void HitFont() = 0; virtual void Finish() = 0; }; class IFX_AdditionalFontEnum { public: virtual ~IFX_AdditionalFontEnum() {} virtual int CountFiles() = 0; virtual IFX_FileStream* GetFontFile(int index) = 0; }; class CFX_FontMapper { public: CFX_FontMapper(CFX_FontMgr* mgr); ~CFX_FontMapper(); void SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo); IFX_SystemFontInfo* GetSystemFontInfo() { return m_pFontInfo; } void AddInstalledFont(const CFX_ByteString& name, int charset); void LoadInstalledFonts(); CFX_ByteStringArray m_InstalledTTFonts; void SetFontEnumerator(IFX_FontEnumerator* pFontEnumerator) { m_pFontEnumerator = pFontEnumerator; } IFX_FontEnumerator* GetFontEnumerator() const { return m_pFontEnumerator; } FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont); private: CFX_ByteString GetPSNameFromTT(void* hFont); CFX_ByteString MatchInstalledFonts(const CFX_ByteString& norm_name); FXFT_Face UseInternalSubst(CFX_SubstFont* pSubstFont, int iBaseFont, int italic_angle, int weight, int picthfamily); FX_BOOL m_bListLoaded; FXFT_Face m_MMFaces[2]; CFX_ByteString m_LastFamily; CFX_DWordArray m_CharsetArray; CFX_ByteStringArray m_FaceArray; IFX_SystemFontInfo* m_pFontInfo; FXFT_Face m_FoxitFaces[14]; IFX_FontEnumerator* m_pFontEnumerator; CFX_FontMgr* const m_pFontMgr; }; class IFX_SystemFontInfo { public: static IFX_SystemFontInfo* CreateDefault(const char** pUserPaths); virtual void Release() = 0; virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper) = 0; virtual void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, const FX_CHAR* face, int& iExact) = 0; virtual void* GetFont(const FX_CHAR* face) = 0; virtual FX_DWORD GetFontData(void* hFont, FX_DWORD table, uint8_t* buffer, FX_DWORD size) = 0; virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) = 0; virtual FX_BOOL GetFontCharset(void* hFont, int& charset) = 0; virtual int GetFaceIndex(void* hFont) { return 0; } virtual void DeleteFont(void* hFont) = 0; virtual void* RetainFont(void* hFont) { return NULL; } protected: ~IFX_SystemFontInfo() {} }; class CFX_FolderFontInfo : public IFX_SystemFontInfo { public: CFX_FolderFontInfo(); virtual ~CFX_FolderFontInfo(); void AddPath(const CFX_ByteStringC& path); // IFX_SytemFontInfo: void Release() override; FX_BOOL EnumFontList(CFX_FontMapper* pMapper) override; void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, const FX_CHAR* face, int& bExact) override; void* GetFont(const FX_CHAR* face) override; FX_DWORD GetFontData(void* hFont, FX_DWORD table, uint8_t* buffer, FX_DWORD size) override; void DeleteFont(void* hFont) override; FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) override; FX_BOOL GetFontCharset(void* hFont, int& charset) override; protected: CFX_MapByteStringToPtr m_FontList; CFX_ByteStringArray m_PathList; CFX_FontMapper* m_pMapper; void ScanPath(CFX_ByteString& path); void ScanFile(CFX_ByteString& path); void ReportFace(CFX_ByteString& path, FXSYS_FILE* pFile, FX_DWORD filesize, FX_DWORD offset); }; class CFX_CountedFaceCache { public: CFX_FaceCache* m_Obj; FX_DWORD m_nCount; }; class CFX_FontCache { public: ~CFX_FontCache(); CFX_FaceCache* GetCachedFace(CFX_Font* pFont); void ReleaseCachedFace(CFX_Font* pFont); void FreeCache(FX_BOOL bRelease = FALSE); 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; }; #define FX_FONTCACHE_DEFINE(pFontCache, pFont) \ CFX_AutoFontCache autoFontCache((pFontCache), (pFont)) class CFX_GlyphBitmap { public: int m_Top; int m_Left; CFX_DIBitmap m_Bitmap; }; class CFX_FaceCache { public: ~CFX_FaceCache(); const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle, const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias, int& text_flags); const CFX_PathData* LoadGlyphPath(CFX_Font* pFont, FX_DWORD glyph_index, int dest_width); CFX_FaceCache(FXFT_Face face); private: FXFT_Face m_Face; CFX_GlyphBitmap* RenderGlyph(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle, const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias); CFX_GlyphBitmap* RenderGlyph_Nativetext(CFX_Font* pFont, FX_DWORD glyph_index, const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias); CFX_GlyphBitmap* LookUpGlyphBitmap(CFX_Font* pFont, const CFX_AffineMatrix* pMatrix, CFX_ByteStringC& FaceGlyphsKey, FX_DWORD glyph_index, FX_BOOL bFontStyle, int dest_width, int anti_alias); CFX_MapByteStringToPtr m_SizeMap; CFX_MapPtrToPtr m_PathMap; CFX_DIBitmap* m_pBitmap; void InitPlatform(); void DestroyPlatform(); }; typedef struct { const CFX_GlyphBitmap* m_pGlyph; int m_OriginX, m_OriginY; FX_FLOAT m_fOriginX, m_fOriginY; } FXTEXT_GLYPHPOS; FX_RECT FXGE_GetGlyphsBBox(FXTEXT_GLYPHPOS* pGlyphAndPos, int nChars, int anti_alias, FX_FLOAT retinaScaleX = 1.0f, FX_FLOAT retinaScaleY = 1.0f); FX_BOOL OutputGlyph(void* dib, int x, int y, CFX_Font* pFont, double font_size, CFX_AffineMatrix* pMatrix, unsigned long glyph_index, unsigned long argb); FX_BOOL OutputText(void* dib, int x, int y, CFX_Font* pFont, double font_size, CFX_AffineMatrix* pText_matrix, unsigned short const* text, unsigned long argb); class IFX_GSUBTable { public: static IFX_GSUBTable* Create(CFX_Font* pFont); virtual ~IFX_GSUBTable() {} virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) = 0; }; #endif // CORE_INCLUDE_FXGE_FX_FONT_H_