1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _FX_FONT_H_ 8 #define _FX_FONT_H_ 9 #ifndef _FXCRT_EXTENSION_ 10 #include "../../include/fxcrt/fx_ext.h" 11 #endif 12 #ifndef _FX_DIB_H_ 13 #include "fx_dib.h" 14 #endif 15 typedef struct FT_FaceRec_* FXFT_Face; 16 typedef void* FXFT_Library; 17 class IFX_FontEncoding; 18 class CFX_PathData; 19 class CFX_SubstFont; 20 class CFX_FaceCache; 21 class IFX_FontMapper; 22 class CFX_FontMapper; 23 class IFX_SystemFontInfo; 24 class CFontFileFaceInfo; 25 #define FXFONT_FIXED_PITCH 0x01 26 #define FXFONT_SERIF 0x02 27 #define FXFONT_SYMBOLIC 0x04 28 #define FXFONT_SCRIPT 0x08 29 #define FXFONT_ITALIC 0x40 30 #define FXFONT_BOLD 0x40000 31 #define FXFONT_USEEXTERNATTR 0x80000 32 #define FXFONT_CIDFONT 0x100000 33 #define FXFONT_ANSI_CHARSET 0 34 #define FXFONT_DEFAULT_CHARSET 1 35 #define FXFONT_SYMBOL_CHARSET 2 36 #define FXFONT_SHIFTJIS_CHARSET 128 37 #define FXFONT_HANGEUL_CHARSET 129 38 #define FXFONT_GB2312_CHARSET 134 39 #define FXFONT_CHINESEBIG5_CHARSET 136 40 #define FXFONT_THAI_CHARSET 222 41 #define FXFONT_EASTEUROPE_CHARSET 238 42 #define FXFONT_RUSSIAN_CHARSET 204 43 #define FXFONT_GREEK_CHARSET 161 44 #define FXFONT_TURKISH_CHARSET 162 45 #define FXFONT_HEBREW_CHARSET 177 46 #define FXFONT_ARABIC_CHARSET 178 47 #define FXFONT_BALTIC_CHARSET 186 48 #define FXFONT_FF_FIXEDPITCH 1 49 #define FXFONT_FF_ROMAN (1<<4) 50 #define FXFONT_FF_SCRIPT (4<<4) 51 #define FXFONT_FW_NORMAL 400 52 #define FXFONT_FW_BOLD 700 53 class CFX_Font : public CFX_Object 54 { 55 public: 56 CFX_Font(); 57 ~CFX_Font(); 58 59 FX_BOOL LoadSubst(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, 60 int weight, int italic_angle, int CharsetCP, FX_BOOL bVertical = FALSE); 61 62 FX_BOOL LoadEmbedded(FX_LPCBYTE data, FX_DWORD size); 63 64 FX_BOOL LoadFile(IFX_FileRead* pFile); 65 66 FXFT_Face GetFace() const 67 { 68 return m_Face; 69 } 70 71 72 const CFX_SubstFont* GetSubstFont() const 73 { 74 return m_pSubstFont; 75 } 76 77 CFX_PathData* LoadGlyphPath(FX_DWORD glyph_index, int dest_width = 0); 78 79 int GetGlyphWidth(FX_DWORD glyph_index); 80 81 int GetAscent() const; 82 83 int GetDescent() const; 84 85 FX_BOOL GetGlyphBBox(FX_DWORD glyph_index, FX_RECT &bbox); 86 87 FX_BOOL IsItalic(); 88 89 FX_BOOL IsBold(); 90 91 FX_BOOL IsFixedWidth(); 92 93 FX_BOOL IsVertical() const 94 { 95 return m_bVertical; 96 } 97 98 CFX_WideString GetPsName() const; 99 100 101 CFX_ByteString GetFamilyName() const; 102 103 CFX_ByteString GetFaceName() const; 104 105 106 FX_BOOL IsTTFont(); 107 108 FX_BOOL GetBBox(FX_RECT &bbox); 109 110 int GetHeight(); 111 112 int GetULPos(); 113 114 int GetULthickness(); 115 116 int GetMaxAdvanceWidth(); 117 118 FXFT_Face m_Face; 119 120 CFX_SubstFont* m_pSubstFont; 121 FX_BOOL IsEmbedded() 122 { 123 return m_bEmbedded; 124 } 125 126 void AdjustMMParams(int glyph_index, int width, int weight); 127 FX_LPBYTE m_pFontDataAllocation; 128 FX_LPBYTE m_pFontData; 129 FX_LPBYTE m_pGsubData; 130 FX_DWORD m_dwSize; 131 CFX_BinaryBuf m_OtfFontData; 132 void* m_hHandle; 133 void* m_pPlatformFont; 134 void* m_pPlatformFontCollection; 135 void* m_pDwFont; 136 FX_BOOL m_bDwLoaded; 137 void ReleasePlatformResource(); 138 139 void DeleteFace(); 140 protected: 141 142 FX_BOOL m_bEmbedded; 143 FX_BOOL m_bVertical; 144 void* m_pOwnedStream; 145 }; 146 #define ENCODING_INTERNAL 0 147 #define ENCODING_UNICODE 1 148 class IFX_FontEncoding : public CFX_Object 149 { 150 public: 151 virtual ~IFX_FontEncoding() {} 152 153 virtual FX_DWORD GlyphFromCharCode(FX_DWORD charcode) = 0; 154 155 virtual CFX_WideString UnicodeFromCharCode(FX_DWORD charcode) const = 0; 156 157 virtual FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const = 0; 158 }; 159 IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont); 160 #define FXFONT_SUBST_MM 0x01 161 #define FXFONT_SUBST_GLYPHPATH 0x04 162 #define FXFONT_SUBST_CLEARTYPE 0x08 163 #define FXFONT_SUBST_TRANSFORM 0x10 164 #define FXFONT_SUBST_NONSYMBOL 0x20 165 #define FXFONT_SUBST_EXACT 0x40 166 #define FXFONT_SUBST_STANDARD 0x80 167 class CFX_SubstFont : public CFX_Object 168 { 169 public: 170 171 CFX_SubstFont(); 172 173 FX_LPVOID m_ExtHandle; 174 175 CFX_ByteString m_Family; 176 177 int m_Charset; 178 179 FX_DWORD m_SubstFlags; 180 181 int m_Weight; 182 183 int m_ItalicAngle; 184 185 FX_BOOL m_bSubstOfCJK; 186 187 int m_WeightCJK; 188 189 FX_BOOL m_bItlicCJK; 190 }; 191 #define FX_FONT_FLAG_SERIF 0x01 192 #define FX_FONT_FLAG_FIXEDPITCH 0x02 193 #define FX_FONT_FLAG_ITALIC 0x04 194 #define FX_FONT_FLAG_BOLD 0x08 195 #define FX_FONT_FLAG_SYMBOLIC_SYMBOL 0x10 196 #define FX_FONT_FLAG_SYMBOLIC_DINGBATS 0x20 197 #define FX_FONT_FLAG_MULTIPLEMASTER 0x40 198 typedef struct { 199 FX_LPCBYTE m_pFontData; 200 FX_DWORD m_dwSize; 201 } FoxitFonts; 202 class CFX_FontMgr : public CFX_Object 203 { 204 public: 205 CFX_FontMgr(); 206 ~CFX_FontMgr(); 207 void InitFTLibrary(); 208 FXFT_Face GetCachedFace(const CFX_ByteString& face_name, 209 int weight, FX_BOOL bItalic, FX_LPBYTE& pFontData); 210 FXFT_Face AddCachedFace(const CFX_ByteString& face_name, 211 int weight, FX_BOOL bItalic, FX_LPBYTE pData, FX_DWORD size, int face_index); 212 FXFT_Face GetCachedTTCFace(int ttc_size, FX_DWORD checksum, 213 int font_offset, FX_LPBYTE& pFontData); 214 FXFT_Face AddCachedTTCFace(int ttc_size, FX_DWORD checksum, 215 FX_LPBYTE pData, FX_DWORD size, int font_offset); 216 FXFT_Face GetFileFace(FX_LPCSTR filename, int face_index); 217 FXFT_Face GetFixedFace(FX_LPCBYTE pData, FX_DWORD size, int face_index); 218 void ReleaseFace(FXFT_Face face); 219 void SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo); 220 FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, 221 int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont); 222 223 void FreeCache(); 224 225 FX_BOOL GetStandardFont(FX_LPCBYTE& pFontData, FX_DWORD& size, int index); 226 CFX_FontMapper* m_pBuiltinMapper; 227 IFX_FontMapper* m_pExtMapper; 228 CFX_MapByteStringToPtr m_FaceMap; 229 FXFT_Library m_FTLibrary; 230 FoxitFonts m_ExternalFonts[16]; 231 }; 232 class IFX_FontMapper : public CFX_Object 233 { 234 public: 235 236 virtual ~IFX_FontMapper() {} 237 238 virtual FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, 239 int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont) = 0; 240 241 CFX_FontMgr* m_pFontMgr; 242 }; 243 class IFX_FontEnumerator 244 { 245 public: 246 247 virtual void HitFont() = 0; 248 249 virtual void Finish() = 0; 250 }; 251 class IFX_AdditionalFontEnum 252 { 253 public: 254 virtual int CountFiles() = 0; 255 virtual IFX_FileStream* GetFontFile(int index) = 0; 256 }; 257 class CFX_FontMapper : public IFX_FontMapper 258 { 259 public: 260 CFX_FontMapper(); 261 virtual ~CFX_FontMapper(); 262 void SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo); 263 IFX_SystemFontInfo* GetSystemFontInfo() 264 { 265 return m_pFontInfo; 266 } 267 void AddInstalledFont(const CFX_ByteString& name, int charset); 268 void LoadInstalledFonts(); 269 CFX_ByteStringArray m_InstalledTTFonts; 270 void SetFontEnumerator(IFX_FontEnumerator* pFontEnumerator) 271 { 272 m_pFontEnumerator = pFontEnumerator; 273 } 274 IFX_FontEnumerator* GetFontEnumerator() const 275 { 276 return m_pFontEnumerator; 277 } 278 virtual FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags, 279 int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont); 280 private: 281 CFX_ByteString GetPSNameFromTT(void* hFont); 282 CFX_ByteString MatchInstalledFonts(const CFX_ByteString& norm_name); 283 FXFT_Face UseInternalSubst(CFX_SubstFont* pSubstFont, int iBaseFont, int italic_angle, int weight, int picthfamily); 284 285 FX_BOOL m_bListLoaded; 286 FXFT_Face m_MMFaces[2]; 287 CFX_ByteString m_LastFamily; 288 CFX_DWordArray m_CharsetArray; 289 CFX_ByteStringArray m_FaceArray; 290 IFX_SystemFontInfo* m_pFontInfo; 291 FXFT_Face m_FoxitFaces[14]; 292 IFX_FontEnumerator* m_pFontEnumerator; 293 }; 294 class IFX_SystemFontInfo : public CFX_Object 295 { 296 public: 297 static IFX_SystemFontInfo* CreateDefault(); 298 virtual void Release() = 0; 299 virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper) = 0; 300 virtual void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, FX_LPCSTR face, FX_BOOL& bExact) = 0; 301 virtual void* GetFont(FX_LPCSTR face) = 0; 302 virtual FX_DWORD GetFontData(void* hFont, FX_DWORD table, FX_LPBYTE buffer, FX_DWORD size) = 0; 303 virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) = 0; 304 virtual FX_BOOL GetFontCharset(void* hFont, int& charset) = 0; 305 virtual int GetFaceIndex(void* hFont) 306 { 307 return 0; 308 } 309 virtual void DeleteFont(void* hFont) = 0; 310 virtual void* RetainFont(void* hFont) 311 { 312 return NULL; 313 } 314 }; 315 class CFX_FolderFontInfo : public IFX_SystemFontInfo 316 { 317 public: 318 CFX_FolderFontInfo(); 319 ~CFX_FolderFontInfo(); 320 void AddPath(FX_BSTR path); 321 virtual void Release(); 322 virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper); 323 virtual void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, FX_LPCSTR face, FX_BOOL& bExact); 324 virtual void* GetFont(FX_LPCSTR face); 325 virtual FX_DWORD GetFontData(void* hFont, FX_DWORD table, FX_LPBYTE buffer, FX_DWORD size); 326 virtual void DeleteFont(void* hFont); 327 virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name); 328 virtual FX_BOOL GetFontCharset(void* hFont, int& charset); 329 protected: 330 CFX_MapByteStringToPtr m_FontList; 331 CFX_ByteStringArray m_PathList; 332 CFX_FontMapper* m_pMapper; 333 void ScanPath(CFX_ByteString& path); 334 void ScanFile(CFX_ByteString& path); 335 void ReportFace(CFX_ByteString& path, FXSYS_FILE* pFile, FX_DWORD filesize, FX_DWORD offset); 336 }; 337 class CFX_CountedFaceCache : public CFX_Object 338 { 339 public: 340 CFX_FaceCache* m_Obj; 341 FX_DWORD m_nCount; 342 }; 343 typedef CFX_MapPtrTemplate<FXFT_Face, CFX_CountedFaceCache*> CFX_FTCacheMap; 344 class CFX_FontCache : public CFX_Object 345 { 346 public: 347 ~CFX_FontCache(); 348 CFX_FaceCache* GetCachedFace(CFX_Font* pFont); 349 void ReleaseCachedFace(CFX_Font* pFont); 350 void FreeCache(FX_BOOL bRelease = FALSE); 351 352 private: 353 CFX_FTCacheMap m_FTFaceMap; 354 CFX_FTCacheMap m_ExtFaceMap; 355 }; 356 class CFX_AutoFontCache 357 { 358 public: 359 CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont) 360 : m_pFontCache(pFontCache) 361 , m_pFont(pFont) 362 { 363 } 364 ~CFX_AutoFontCache() 365 { 366 m_pFontCache->ReleaseCachedFace(m_pFont); 367 } 368 CFX_FontCache* m_pFontCache; 369 CFX_Font* m_pFont; 370 }; 371 #define FX_FONTCACHE_DEFINE(pFontCache, pFont) CFX_AutoFontCache autoFontCache((pFontCache), (pFont)) 372 class CFX_GlyphBitmap : public CFX_Object 373 { 374 public: 375 int m_Top; 376 int m_Left; 377 CFX_DIBitmap m_Bitmap; 378 }; 379 class CFX_FaceCache : public CFX_Object 380 { 381 public: 382 ~CFX_FaceCache(); 383 const CFX_GlyphBitmap* LoadGlyphBitmap(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle, const CFX_AffineMatrix* pMatrix, 384 int dest_width, int anti_alias, int& text_flags); 385 const CFX_PathData* LoadGlyphPath(CFX_Font* pFont, FX_DWORD glyph_index, int dest_width); 386 387 388 CFX_FaceCache(FXFT_Face face); 389 private: 390 FXFT_Face m_Face; 391 CFX_GlyphBitmap* RenderGlyph(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle, 392 const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias); 393 CFX_GlyphBitmap* RenderGlyph_Nativetext(CFX_Font* pFont, FX_DWORD glyph_index, 394 const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias); 395 CFX_GlyphBitmap* LookUpGlyphBitmap(CFX_Font* pFont, const CFX_AffineMatrix* pMatrix, CFX_ByteStringC& FaceGlyphsKey, 396 FX_DWORD glyph_index, FX_BOOL bFontStyle, int dest_width, int anti_alias); 397 CFX_MapByteStringToPtr m_SizeMap; 398 CFX_MapPtrToPtr m_PathMap; 399 CFX_DIBitmap* m_pBitmap; 400 void* m_pPlatformGraphics; 401 void* m_pPlatformBitmap; 402 void* m_hDC; 403 void* m_hBitmap; 404 void* m_hOldBitmap; 405 void* m_hGdiFont; 406 void* m_hOldGdiFont; 407 408 void InitPlatform(); 409 void DestroyPlatform(); 410 }; 411 typedef struct { 412 const CFX_GlyphBitmap* m_pGlyph; 413 int m_OriginX, m_OriginY; 414 FX_FLOAT m_fOriginX, m_fOriginY; 415 } FXTEXT_GLYPHPOS; 416 FX_RECT FXGE_GetGlyphsBBox(FXTEXT_GLYPHPOS* pGlyphAndPos, int nChars, int anti_alias, FX_FLOAT retinaScaleX = 1.0f, FX_FLOAT retinaScaleY = 1.0f); 417 FX_BOOL OutputGlyph(void* dib, int x, int y, CFX_Font* pFont, double font_size, 418 CFX_AffineMatrix* pMatrix, unsigned long glyph_index, unsigned long argb); 419 FX_BOOL OutputText(void* dib, int x, int y, CFX_Font* pFont, double font_size, 420 CFX_AffineMatrix* pText_matrix, unsigned short const* text, unsigned long argb); 421 class IFX_GSUBTable 422 { 423 public: 424 virtual void Release() = 0; 425 virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) = 0; 426 }; 427 IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont); 428 #endif 429
