1 /***************************************************************************/ 2 /* */ 3 /* cfftypes.h */ 4 /* */ 5 /* Basic OpenType/CFF type definitions and interface (specification */ 6 /* only). */ 7 /* */ 8 /* Copyright 1996-2018 by */ 9 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 10 /* */ 11 /* This file is part of the FreeType project, and may only be used, */ 12 /* modified, and distributed under the terms of the FreeType project */ 13 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 14 /* this file you indicate that you have read the license and */ 15 /* understand and accept it fully. */ 16 /* */ 17 /***************************************************************************/ 18 19 20 #ifndef CFFTYPES_H_ 21 #define CFFTYPES_H_ 22 23 24 #include <ft2build.h> 25 #include FT_FREETYPE_H 26 #include FT_TYPE1_TABLES_H 27 #include FT_INTERNAL_SERVICE_H 28 #include FT_SERVICE_POSTSCRIPT_CMAPS_H 29 #include FT_INTERNAL_POSTSCRIPT_HINTS_H 30 #include FT_INTERNAL_TYPE1_TYPES_H 31 32 33 FT_BEGIN_HEADER 34 35 36 /*************************************************************************/ 37 /* */ 38 /* <Struct> */ 39 /* CFF_IndexRec */ 40 /* */ 41 /* <Description> */ 42 /* A structure used to model a CFF Index table. */ 43 /* */ 44 /* <Fields> */ 45 /* stream :: The source input stream. */ 46 /* */ 47 /* start :: The position of the first index byte in the */ 48 /* input stream. */ 49 /* */ 50 /* count :: The number of elements in the index. */ 51 /* */ 52 /* off_size :: The size in bytes of object offsets in index. */ 53 /* */ 54 /* data_offset :: The position of first data byte in the index's */ 55 /* bytes. */ 56 /* */ 57 /* data_size :: The size of the data table in this index. */ 58 /* */ 59 /* offsets :: A table of element offsets in the index. Must be */ 60 /* loaded explicitly. */ 61 /* */ 62 /* bytes :: If the index is loaded in memory, its bytes. */ 63 /* */ 64 typedef struct CFF_IndexRec_ 65 { 66 FT_Stream stream; 67 FT_ULong start; 68 FT_UInt hdr_size; 69 FT_UInt count; 70 FT_Byte off_size; 71 FT_ULong data_offset; 72 FT_ULong data_size; 73 74 FT_ULong* offsets; 75 FT_Byte* bytes; 76 77 } CFF_IndexRec, *CFF_Index; 78 79 80 typedef struct CFF_EncodingRec_ 81 { 82 FT_UInt format; 83 FT_ULong offset; 84 85 FT_UInt count; 86 FT_UShort sids [256]; /* avoid dynamic allocations */ 87 FT_UShort codes[256]; 88 89 } CFF_EncodingRec, *CFF_Encoding; 90 91 92 typedef struct CFF_CharsetRec_ 93 { 94 95 FT_UInt format; 96 FT_ULong offset; 97 98 FT_UShort* sids; 99 FT_UShort* cids; /* the inverse mapping of `sids'; only needed */ 100 /* for CID-keyed fonts */ 101 FT_UInt max_cid; 102 FT_UInt num_glyphs; 103 104 } CFF_CharsetRec, *CFF_Charset; 105 106 107 /* cf. similar fields in file `ttgxvar.h' from the `truetype' module */ 108 109 typedef struct CFF_VarData_ 110 { 111 #if 0 112 FT_UInt itemCount; /* not used; always zero */ 113 FT_UInt shortDeltaCount; /* not used; always zero */ 114 #endif 115 116 FT_UInt regionIdxCount; /* number of region indexes */ 117 FT_UInt* regionIndices; /* array of `regionIdxCount' indices; */ 118 /* these index `varRegionList' */ 119 } CFF_VarData; 120 121 122 /* contribution of one axis to a region */ 123 typedef struct CFF_AxisCoords_ 124 { 125 FT_Fixed startCoord; 126 FT_Fixed peakCoord; /* zero peak means no effect (factor = 1) */ 127 FT_Fixed endCoord; 128 129 } CFF_AxisCoords; 130 131 132 typedef struct CFF_VarRegion_ 133 { 134 CFF_AxisCoords* axisList; /* array of axisCount records */ 135 136 } CFF_VarRegion; 137 138 139 typedef struct CFF_VStoreRec_ 140 { 141 FT_UInt dataCount; 142 CFF_VarData* varData; /* array of dataCount records */ 143 /* vsindex indexes this array */ 144 FT_UShort axisCount; 145 FT_UInt regionCount; /* total number of regions defined */ 146 CFF_VarRegion* varRegionList; 147 148 } CFF_VStoreRec, *CFF_VStore; 149 150 151 /* forward reference */ 152 typedef struct CFF_FontRec_* CFF_Font; 153 154 155 /* This object manages one cached blend vector. */ 156 /* */ 157 /* There is a BlendRec for Private DICT parsing in each subfont */ 158 /* and a BlendRec for charstrings in CF2_Font instance data. */ 159 /* A cached BV may be used across DICTs or Charstrings if inputs */ 160 /* have not changed. */ 161 /* */ 162 /* `usedBV' is reset at the start of each parse or charstring. */ 163 /* vsindex cannot be changed after a BV is used. */ 164 /* */ 165 /* Note: NDV is long (32/64 bit), while BV is 16.16 (FT_Int32). */ 166 typedef struct CFF_BlendRec_ 167 { 168 FT_Bool builtBV; /* blendV has been built */ 169 FT_Bool usedBV; /* blendV has been used */ 170 CFF_Font font; /* top level font struct */ 171 FT_UInt lastVsindex; /* last vsindex used */ 172 FT_UInt lenNDV; /* normDV length (aka numAxes) */ 173 FT_Fixed* lastNDV; /* last NDV used */ 174 FT_UInt lenBV; /* BlendV length (aka numMasters) */ 175 FT_Int32* BV; /* current blendV (per DICT/glyph) */ 176 177 } CFF_BlendRec, *CFF_Blend; 178 179 180 typedef struct CFF_FontRecDictRec_ 181 { 182 FT_UInt version; 183 FT_UInt notice; 184 FT_UInt copyright; 185 FT_UInt full_name; 186 FT_UInt family_name; 187 FT_UInt weight; 188 FT_Bool is_fixed_pitch; 189 FT_Fixed italic_angle; 190 FT_Fixed underline_position; 191 FT_Fixed underline_thickness; 192 FT_Int paint_type; 193 FT_Int charstring_type; 194 FT_Matrix font_matrix; 195 FT_Bool has_font_matrix; 196 FT_ULong units_per_em; /* temporarily used as scaling value also */ 197 FT_Vector font_offset; 198 FT_ULong unique_id; 199 FT_BBox font_bbox; 200 FT_Pos stroke_width; 201 FT_ULong charset_offset; 202 FT_ULong encoding_offset; 203 FT_ULong charstrings_offset; 204 FT_ULong private_offset; 205 FT_ULong private_size; 206 FT_Long synthetic_base; 207 FT_UInt embedded_postscript; 208 209 /* these should only be used for the top-level font dictionary */ 210 FT_UInt cid_registry; 211 FT_UInt cid_ordering; 212 FT_Long cid_supplement; 213 214 FT_Long cid_font_version; 215 FT_Long cid_font_revision; 216 FT_Long cid_font_type; 217 FT_ULong cid_count; 218 FT_ULong cid_uid_base; 219 FT_ULong cid_fd_array_offset; 220 FT_ULong cid_fd_select_offset; 221 FT_UInt cid_font_name; 222 223 /* the next fields come from the data of the deprecated */ 224 /* `MultipleMaster' operator; they are needed to parse the (also */ 225 /* deprecated) `blend' operator in Type 2 charstrings */ 226 FT_UShort num_designs; 227 FT_UShort num_axes; 228 229 /* fields for CFF2 */ 230 FT_ULong vstore_offset; 231 FT_UInt maxstack; 232 233 } CFF_FontRecDictRec, *CFF_FontRecDict; 234 235 236 /* forward reference */ 237 typedef struct CFF_SubFontRec_* CFF_SubFont; 238 239 240 typedef struct CFF_PrivateRec_ 241 { 242 FT_Byte num_blue_values; 243 FT_Byte num_other_blues; 244 FT_Byte num_family_blues; 245 FT_Byte num_family_other_blues; 246 247 FT_Pos blue_values[14]; 248 FT_Pos other_blues[10]; 249 FT_Pos family_blues[14]; 250 FT_Pos family_other_blues[10]; 251 252 FT_Fixed blue_scale; 253 FT_Pos blue_shift; 254 FT_Pos blue_fuzz; 255 FT_Pos standard_width; 256 FT_Pos standard_height; 257 258 FT_Byte num_snap_widths; 259 FT_Byte num_snap_heights; 260 FT_Pos snap_widths[13]; 261 FT_Pos snap_heights[13]; 262 FT_Bool force_bold; 263 FT_Fixed force_bold_threshold; 264 FT_Int lenIV; 265 FT_Int language_group; 266 FT_Fixed expansion_factor; 267 FT_Long initial_random_seed; 268 FT_ULong local_subrs_offset; 269 FT_Pos default_width; 270 FT_Pos nominal_width; 271 272 /* fields for CFF2 */ 273 FT_UInt vsindex; 274 CFF_SubFont subfont; 275 276 } CFF_PrivateRec, *CFF_Private; 277 278 279 typedef struct CFF_FDSelectRec_ 280 { 281 FT_Byte format; 282 FT_UInt range_count; 283 284 /* that's the table, taken from the file `as is' */ 285 FT_Byte* data; 286 FT_UInt data_size; 287 288 /* small cache for format 3 only */ 289 FT_UInt cache_first; 290 FT_UInt cache_count; 291 FT_Byte cache_fd; 292 293 } CFF_FDSelectRec, *CFF_FDSelect; 294 295 296 /* A SubFont packs a font dict and a private dict together. They are */ 297 /* needed to support CID-keyed CFF fonts. */ 298 typedef struct CFF_SubFontRec_ 299 { 300 CFF_FontRecDictRec font_dict; 301 CFF_PrivateRec private_dict; 302 303 /* fields for CFF2 */ 304 CFF_BlendRec blend; /* current blend vector */ 305 FT_UInt lenNDV; /* current length NDV or zero */ 306 FT_Fixed* NDV; /* ptr to current NDV or NULL */ 307 308 /* `blend_stack' is a writable buffer to hold blend results. */ 309 /* This buffer is to the side of the normal cff parser stack; */ 310 /* `cff_parse_blend' and `cff_blend_doBlend' push blend results here. */ 311 /* The normal stack then points to these values instead of the DICT */ 312 /* because all other operators in Private DICT clear the stack. */ 313 /* `blend_stack' could be cleared at each operator other than blend. */ 314 /* Blended values are stored as 5-byte fixed point values. */ 315 316 FT_Byte* blend_stack; /* base of stack allocation */ 317 FT_Byte* blend_top; /* first empty slot */ 318 FT_UInt blend_used; /* number of bytes in use */ 319 FT_UInt blend_alloc; /* number of bytes allocated */ 320 321 CFF_IndexRec local_subrs_index; 322 FT_Byte** local_subrs; /* array of pointers */ 323 /* into Local Subrs INDEX data */ 324 325 FT_UInt32 random; 326 327 } CFF_SubFontRec; 328 329 330 #define CFF_MAX_CID_FONTS 256 331 332 333 typedef struct CFF_FontRec_ 334 { 335 FT_Library library; 336 FT_Stream stream; 337 FT_Memory memory; /* TODO: take this from stream->memory? */ 338 FT_ULong base_offset; /* offset to start of CFF */ 339 FT_UInt num_faces; 340 FT_UInt num_glyphs; 341 342 FT_Byte version_major; 343 FT_Byte version_minor; 344 FT_Byte header_size; 345 346 FT_UInt top_dict_length; /* cff2 only */ 347 348 FT_Bool cff2; 349 350 CFF_IndexRec name_index; 351 CFF_IndexRec top_dict_index; 352 CFF_IndexRec global_subrs_index; 353 354 CFF_EncodingRec encoding; 355 CFF_CharsetRec charset; 356 357 CFF_IndexRec charstrings_index; 358 CFF_IndexRec font_dict_index; 359 CFF_IndexRec private_index; 360 CFF_IndexRec local_subrs_index; 361 362 FT_String* font_name; 363 364 /* array of pointers into Global Subrs INDEX data */ 365 FT_Byte** global_subrs; 366 367 /* array of pointers into String INDEX data stored at string_pool */ 368 FT_UInt num_strings; 369 FT_Byte** strings; 370 FT_Byte* string_pool; 371 FT_ULong string_pool_size; 372 373 CFF_SubFontRec top_font; 374 FT_UInt num_subfonts; 375 CFF_SubFont subfonts[CFF_MAX_CID_FONTS]; 376 377 CFF_FDSelectRec fd_select; 378 379 /* interface to PostScript hinter */ 380 PSHinter_Service pshinter; 381 382 /* interface to Postscript Names service */ 383 FT_Service_PsCMaps psnames; 384 385 /* interface to CFFLoad service */ 386 const void* cffload; 387 388 /* since version 2.3.0 */ 389 PS_FontInfoRec* font_info; /* font info dictionary */ 390 391 /* since version 2.3.6 */ 392 FT_String* registry; 393 FT_String* ordering; 394 395 /* since version 2.4.12 */ 396 FT_Generic cf2_instance; 397 398 /* since version 2.7.1 */ 399 CFF_VStoreRec vstore; /* parsed vstore structure */ 400 401 /* since version 2.9 */ 402 PS_FontExtraRec* font_extra; 403 404 } CFF_FontRec; 405 406 407 FT_END_HEADER 408 409 #endif /* CFFTYPES_H_ */ 410 411 412 /* END */ 413
