1 /***************************************************************************/ 2 /* */ 3 /* t1tables.h */ 4 /* */ 5 /* Basic Type 1/Type 2 tables definitions and interface (specification */ 6 /* only). */ 7 /* */ 8 /* Copyright 1996-2004, 2006, 2008, 2009, 2011 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 __T1TABLES_H__ 21 #define __T1TABLES_H__ 22 23 24 #include <ft2build.h> 25 #include FT_FREETYPE_H 26 27 #ifdef FREETYPE_H 28 #error "freetype.h of FreeType 1 has been loaded!" 29 #error "Please fix the directory search order for header files" 30 #error "so that freetype.h of FreeType 2 is found first." 31 #endif 32 33 34 FT_BEGIN_HEADER 35 36 37 /*************************************************************************/ 38 /* */ 39 /* <Section> */ 40 /* type1_tables */ 41 /* */ 42 /* <Title> */ 43 /* Type 1 Tables */ 44 /* */ 45 /* <Abstract> */ 46 /* Type~1 (PostScript) specific font tables. */ 47 /* */ 48 /* <Description> */ 49 /* This section contains the definition of Type 1-specific tables, */ 50 /* including structures related to other PostScript font formats. */ 51 /* */ 52 /*************************************************************************/ 53 54 55 /* Note that we separate font data in PS_FontInfoRec and PS_PrivateRec */ 56 /* structures in order to support Multiple Master fonts. */ 57 58 59 /*************************************************************************/ 60 /* */ 61 /* <Struct> */ 62 /* PS_FontInfoRec */ 63 /* */ 64 /* <Description> */ 65 /* A structure used to model a Type~1 or Type~2 FontInfo dictionary. */ 66 /* Note that for Multiple Master fonts, each instance has its own */ 67 /* FontInfo dictionary. */ 68 /* */ 69 typedef struct PS_FontInfoRec_ 70 { 71 FT_String* version; 72 FT_String* notice; 73 FT_String* full_name; 74 FT_String* family_name; 75 FT_String* weight; 76 FT_Long italic_angle; 77 FT_Bool is_fixed_pitch; 78 FT_Short underline_position; 79 FT_UShort underline_thickness; 80 81 } PS_FontInfoRec; 82 83 84 /*************************************************************************/ 85 /* */ 86 /* <Struct> */ 87 /* PS_FontInfo */ 88 /* */ 89 /* <Description> */ 90 /* A handle to a @PS_FontInfoRec structure. */ 91 /* */ 92 typedef struct PS_FontInfoRec_* PS_FontInfo; 93 94 95 /*************************************************************************/ 96 /* */ 97 /* <Struct> */ 98 /* T1_FontInfo */ 99 /* */ 100 /* <Description> */ 101 /* This type is equivalent to @PS_FontInfoRec. It is deprecated but */ 102 /* kept to maintain source compatibility between various versions of */ 103 /* FreeType. */ 104 /* */ 105 typedef PS_FontInfoRec T1_FontInfo; 106 107 108 /*************************************************************************/ 109 /* */ 110 /* <Struct> */ 111 /* PS_PrivateRec */ 112 /* */ 113 /* <Description> */ 114 /* A structure used to model a Type~1 or Type~2 private dictionary. */ 115 /* Note that for Multiple Master fonts, each instance has its own */ 116 /* Private dictionary. */ 117 /* */ 118 typedef struct PS_PrivateRec_ 119 { 120 FT_Int unique_id; 121 FT_Int lenIV; 122 123 FT_Byte num_blue_values; 124 FT_Byte num_other_blues; 125 FT_Byte num_family_blues; 126 FT_Byte num_family_other_blues; 127 128 FT_Short blue_values[14]; 129 FT_Short other_blues[10]; 130 131 FT_Short family_blues [14]; 132 FT_Short family_other_blues[10]; 133 134 FT_Fixed blue_scale; 135 FT_Int blue_shift; 136 FT_Int blue_fuzz; 137 138 FT_UShort standard_width[1]; 139 FT_UShort standard_height[1]; 140 141 FT_Byte num_snap_widths; 142 FT_Byte num_snap_heights; 143 FT_Bool force_bold; 144 FT_Bool round_stem_up; 145 146 FT_Short snap_widths [13]; /* including std width */ 147 FT_Short snap_heights[13]; /* including std height */ 148 149 FT_Fixed expansion_factor; 150 151 FT_Long language_group; 152 FT_Long password; 153 154 FT_Short min_feature[2]; 155 156 } PS_PrivateRec; 157 158 159 /*************************************************************************/ 160 /* */ 161 /* <Struct> */ 162 /* PS_Private */ 163 /* */ 164 /* <Description> */ 165 /* A handle to a @PS_PrivateRec structure. */ 166 /* */ 167 typedef struct PS_PrivateRec_* PS_Private; 168 169 170 /*************************************************************************/ 171 /* */ 172 /* <Struct> */ 173 /* T1_Private */ 174 /* */ 175 /* <Description> */ 176 /* This type is equivalent to @PS_PrivateRec. It is deprecated but */ 177 /* kept to maintain source compatibility between various versions of */ 178 /* FreeType. */ 179 /* */ 180 typedef PS_PrivateRec T1_Private; 181 182 183 /*************************************************************************/ 184 /* */ 185 /* <Enum> */ 186 /* T1_Blend_Flags */ 187 /* */ 188 /* <Description> */ 189 /* A set of flags used to indicate which fields are present in a */ 190 /* given blend dictionary (font info or private). Used to support */ 191 /* Multiple Masters fonts. */ 192 /* */ 193 typedef enum T1_Blend_Flags_ 194 { 195 /*# required fields in a FontInfo blend dictionary */ 196 T1_BLEND_UNDERLINE_POSITION = 0, 197 T1_BLEND_UNDERLINE_THICKNESS, 198 T1_BLEND_ITALIC_ANGLE, 199 200 /*# required fields in a Private blend dictionary */ 201 T1_BLEND_BLUE_VALUES, 202 T1_BLEND_OTHER_BLUES, 203 T1_BLEND_STANDARD_WIDTH, 204 T1_BLEND_STANDARD_HEIGHT, 205 T1_BLEND_STEM_SNAP_WIDTHS, 206 T1_BLEND_STEM_SNAP_HEIGHTS, 207 T1_BLEND_BLUE_SCALE, 208 T1_BLEND_BLUE_SHIFT, 209 T1_BLEND_FAMILY_BLUES, 210 T1_BLEND_FAMILY_OTHER_BLUES, 211 T1_BLEND_FORCE_BOLD, 212 213 /*# never remove */ 214 T1_BLEND_MAX 215 216 } T1_Blend_Flags; 217 218 /* */ 219 220 221 /*# backwards compatible definitions */ 222 #define t1_blend_underline_position T1_BLEND_UNDERLINE_POSITION 223 #define t1_blend_underline_thickness T1_BLEND_UNDERLINE_THICKNESS 224 #define t1_blend_italic_angle T1_BLEND_ITALIC_ANGLE 225 #define t1_blend_blue_values T1_BLEND_BLUE_VALUES 226 #define t1_blend_other_blues T1_BLEND_OTHER_BLUES 227 #define t1_blend_standard_widths T1_BLEND_STANDARD_WIDTH 228 #define t1_blend_standard_height T1_BLEND_STANDARD_HEIGHT 229 #define t1_blend_stem_snap_widths T1_BLEND_STEM_SNAP_WIDTHS 230 #define t1_blend_stem_snap_heights T1_BLEND_STEM_SNAP_HEIGHTS 231 #define t1_blend_blue_scale T1_BLEND_BLUE_SCALE 232 #define t1_blend_blue_shift T1_BLEND_BLUE_SHIFT 233 #define t1_blend_family_blues T1_BLEND_FAMILY_BLUES 234 #define t1_blend_family_other_blues T1_BLEND_FAMILY_OTHER_BLUES 235 #define t1_blend_force_bold T1_BLEND_FORCE_BOLD 236 #define t1_blend_max T1_BLEND_MAX 237 238 239 /* maximum number of Multiple Masters designs, as defined in the spec */ 240 #define T1_MAX_MM_DESIGNS 16 241 242 /* maximum number of Multiple Masters axes, as defined in the spec */ 243 #define T1_MAX_MM_AXIS 4 244 245 /* maximum number of elements in a design map */ 246 #define T1_MAX_MM_MAP_POINTS 20 247 248 249 /* this structure is used to store the BlendDesignMap entry for an axis */ 250 typedef struct PS_DesignMap_ 251 { 252 FT_Byte num_points; 253 FT_Long* design_points; 254 FT_Fixed* blend_points; 255 256 } PS_DesignMapRec, *PS_DesignMap; 257 258 /* backwards-compatible definition */ 259 typedef PS_DesignMapRec T1_DesignMap; 260 261 262 typedef struct PS_BlendRec_ 263 { 264 FT_UInt num_designs; 265 FT_UInt num_axis; 266 267 FT_String* axis_names[T1_MAX_MM_AXIS]; 268 FT_Fixed* design_pos[T1_MAX_MM_DESIGNS]; 269 PS_DesignMapRec design_map[T1_MAX_MM_AXIS]; 270 271 FT_Fixed* weight_vector; 272 FT_Fixed* default_weight_vector; 273 274 PS_FontInfo font_infos[T1_MAX_MM_DESIGNS + 1]; 275 PS_Private privates [T1_MAX_MM_DESIGNS + 1]; 276 277 FT_ULong blend_bitflags; 278 279 FT_BBox* bboxes [T1_MAX_MM_DESIGNS + 1]; 280 281 /* since 2.3.0 */ 282 283 /* undocumented, optional: the default design instance; */ 284 /* corresponds to default_weight_vector -- */ 285 /* num_default_design_vector == 0 means it is not present */ 286 /* in the font and associated metrics files */ 287 FT_UInt default_design_vector[T1_MAX_MM_DESIGNS]; 288 FT_UInt num_default_design_vector; 289 290 } PS_BlendRec, *PS_Blend; 291 292 293 /* backwards-compatible definition */ 294 typedef PS_BlendRec T1_Blend; 295 296 297 /*************************************************************************/ 298 /* */ 299 /* <Struct> */ 300 /* CID_FaceDictRec */ 301 /* */ 302 /* <Description> */ 303 /* A structure used to represent data in a CID top-level dictionary. */ 304 /* */ 305 typedef struct CID_FaceDictRec_ 306 { 307 PS_PrivateRec private_dict; 308 309 FT_UInt len_buildchar; 310 FT_Fixed forcebold_threshold; 311 FT_Pos stroke_width; 312 FT_Fixed expansion_factor; 313 314 FT_Byte paint_type; 315 FT_Byte font_type; 316 FT_Matrix font_matrix; 317 FT_Vector font_offset; 318 319 FT_UInt num_subrs; 320 FT_ULong subrmap_offset; 321 FT_Int sd_bytes; 322 323 } CID_FaceDictRec; 324 325 326 /*************************************************************************/ 327 /* */ 328 /* <Struct> */ 329 /* CID_FaceDict */ 330 /* */ 331 /* <Description> */ 332 /* A handle to a @CID_FaceDictRec structure. */ 333 /* */ 334 typedef struct CID_FaceDictRec_* CID_FaceDict; 335 336 /* */ 337 338 339 /* backwards-compatible definition */ 340 typedef CID_FaceDictRec CID_FontDict; 341 342 343 /*************************************************************************/ 344 /* */ 345 /* <Struct> */ 346 /* CID_FaceInfoRec */ 347 /* */ 348 /* <Description> */ 349 /* A structure used to represent CID Face information. */ 350 /* */ 351 typedef struct CID_FaceInfoRec_ 352 { 353 FT_String* cid_font_name; 354 FT_Fixed cid_version; 355 FT_Int cid_font_type; 356 357 FT_String* registry; 358 FT_String* ordering; 359 FT_Int supplement; 360 361 PS_FontInfoRec font_info; 362 FT_BBox font_bbox; 363 FT_ULong uid_base; 364 365 FT_Int num_xuid; 366 FT_ULong xuid[16]; 367 368 FT_ULong cidmap_offset; 369 FT_Int fd_bytes; 370 FT_Int gd_bytes; 371 FT_ULong cid_count; 372 373 FT_Int num_dicts; 374 CID_FaceDict font_dicts; 375 376 FT_ULong data_offset; 377 378 } CID_FaceInfoRec; 379 380 381 /*************************************************************************/ 382 /* */ 383 /* <Struct> */ 384 /* CID_FaceInfo */ 385 /* */ 386 /* <Description> */ 387 /* A handle to a @CID_FaceInfoRec structure. */ 388 /* */ 389 typedef struct CID_FaceInfoRec_* CID_FaceInfo; 390 391 392 /*************************************************************************/ 393 /* */ 394 /* <Struct> */ 395 /* CID_Info */ 396 /* */ 397 /* <Description> */ 398 /* This type is equivalent to @CID_FaceInfoRec. It is deprecated but */ 399 /* kept to maintain source compatibility between various versions of */ 400 /* FreeType. */ 401 /* */ 402 typedef CID_FaceInfoRec CID_Info; 403 404 405 /************************************************************************ 406 * 407 * @function: 408 * FT_Has_PS_Glyph_Names 409 * 410 * @description: 411 * Return true if a given face provides reliable PostScript glyph 412 * names. This is similar to using the @FT_HAS_GLYPH_NAMES macro, 413 * except that certain fonts (mostly TrueType) contain incorrect 414 * glyph name tables. 415 * 416 * When this function returns true, the caller is sure that the glyph 417 * names returned by @FT_Get_Glyph_Name are reliable. 418 * 419 * @input: 420 * face :: 421 * face handle 422 * 423 * @return: 424 * Boolean. True if glyph names are reliable. 425 * 426 */ 427 FT_EXPORT( FT_Int ) 428 FT_Has_PS_Glyph_Names( FT_Face face ); 429 430 431 /************************************************************************ 432 * 433 * @function: 434 * FT_Get_PS_Font_Info 435 * 436 * @description: 437 * Retrieve the @PS_FontInfoRec structure corresponding to a given 438 * PostScript font. 439 * 440 * @input: 441 * face :: 442 * PostScript face handle. 443 * 444 * @output: 445 * afont_info :: 446 * Output font info structure pointer. 447 * 448 * @return: 449 * FreeType error code. 0~means success. 450 * 451 * @note: 452 * The string pointers within the font info structure are owned by 453 * the face and don't need to be freed by the caller. 454 * 455 * If the font's format is not PostScript-based, this function will 456 * return the `FT_Err_Invalid_Argument' error code. 457 * 458 */ 459 FT_EXPORT( FT_Error ) 460 FT_Get_PS_Font_Info( FT_Face face, 461 PS_FontInfo afont_info ); 462 463 464 /************************************************************************ 465 * 466 * @function: 467 * FT_Get_PS_Font_Private 468 * 469 * @description: 470 * Retrieve the @PS_PrivateRec structure corresponding to a given 471 * PostScript font. 472 * 473 * @input: 474 * face :: 475 * PostScript face handle. 476 * 477 * @output: 478 * afont_private :: 479 * Output private dictionary structure pointer. 480 * 481 * @return: 482 * FreeType error code. 0~means success. 483 * 484 * @note: 485 * The string pointers within the @PS_PrivateRec structure are owned by 486 * the face and don't need to be freed by the caller. 487 * 488 * If the font's format is not PostScript-based, this function returns 489 * the `FT_Err_Invalid_Argument' error code. 490 * 491 */ 492 FT_EXPORT( FT_Error ) 493 FT_Get_PS_Font_Private( FT_Face face, 494 PS_Private afont_private ); 495 496 497 /*************************************************************************/ 498 /* */ 499 /* <Enum> */ 500 /* T1_EncodingType */ 501 /* */ 502 /* <Description> */ 503 /* An enumeration describing the `Encoding' entry in a Type 1 */ 504 /* dictionary. */ 505 /* */ 506 typedef enum T1_EncodingType_ 507 { 508 T1_ENCODING_TYPE_NONE = 0, 509 T1_ENCODING_TYPE_ARRAY, 510 T1_ENCODING_TYPE_STANDARD, 511 T1_ENCODING_TYPE_ISOLATIN1, 512 T1_ENCODING_TYPE_EXPERT 513 514 } T1_EncodingType; 515 516 517 /*************************************************************************/ 518 /* */ 519 /* <Enum> */ 520 /* PS_Dict_Keys */ 521 /* */ 522 /* <Description> */ 523 /* An enumeration used in calls to @FT_Get_PS_Font_Value to identify */ 524 /* the Type~1 dictionary entry to retrieve. */ 525 /* */ 526 typedef enum PS_Dict_Keys_ 527 { 528 /* conventionally in the font dictionary */ 529 PS_DICT_FONT_TYPE, /* FT_Byte */ 530 PS_DICT_FONT_MATRIX, /* FT_Fixed */ 531 PS_DICT_FONT_BBOX, /* FT_Fixed */ 532 PS_DICT_PAINT_TYPE, /* FT_Byte */ 533 PS_DICT_FONT_NAME, /* FT_String* */ 534 PS_DICT_UNIQUE_ID, /* FT_Int */ 535 PS_DICT_NUM_CHAR_STRINGS, /* FT_Int */ 536 PS_DICT_CHAR_STRING_KEY, /* FT_String* */ 537 PS_DICT_CHAR_STRING, /* FT_String* */ 538 PS_DICT_ENCODING_TYPE, /* T1_EncodingType */ 539 PS_DICT_ENCODING_ENTRY, /* FT_String* */ 540 541 /* conventionally in the font Private dictionary */ 542 PS_DICT_NUM_SUBRS, /* FT_Int */ 543 PS_DICT_SUBR, /* FT_String* */ 544 PS_DICT_STD_HW, /* FT_UShort */ 545 PS_DICT_STD_VW, /* FT_UShort */ 546 PS_DICT_NUM_BLUE_VALUES, /* FT_Byte */ 547 PS_DICT_BLUE_VALUE, /* FT_Short */ 548 PS_DICT_BLUE_FUZZ, /* FT_Int */ 549 PS_DICT_NUM_OTHER_BLUES, /* FT_Byte */ 550 PS_DICT_OTHER_BLUE, /* FT_Short */ 551 PS_DICT_NUM_FAMILY_BLUES, /* FT_Byte */ 552 PS_DICT_FAMILY_BLUE, /* FT_Short */ 553 PS_DICT_NUM_FAMILY_OTHER_BLUES, /* FT_Byte */ 554 PS_DICT_FAMILY_OTHER_BLUE, /* FT_Short */ 555 PS_DICT_BLUE_SCALE, /* FT_Fixed */ 556 PS_DICT_BLUE_SHIFT, /* FT_Int */ 557 PS_DICT_NUM_STEM_SNAP_H, /* FT_Byte */ 558 PS_DICT_STEM_SNAP_H, /* FT_Short */ 559 PS_DICT_NUM_STEM_SNAP_V, /* FT_Byte */ 560 PS_DICT_STEM_SNAP_V, /* FT_Short */ 561 PS_DICT_FORCE_BOLD, /* FT_Bool */ 562 PS_DICT_RND_STEM_UP, /* FT_Bool */ 563 PS_DICT_MIN_FEATURE, /* FT_Short */ 564 PS_DICT_LEN_IV, /* FT_Int */ 565 PS_DICT_PASSWORD, /* FT_Long */ 566 PS_DICT_LANGUAGE_GROUP, /* FT_Long */ 567 568 /* conventionally in the font FontInfo dictionary */ 569 PS_DICT_VERSION, /* FT_String* */ 570 PS_DICT_NOTICE, /* FT_String* */ 571 PS_DICT_FULL_NAME, /* FT_String* */ 572 PS_DICT_FAMILY_NAME, /* FT_String* */ 573 PS_DICT_WEIGHT, /* FT_String* */ 574 PS_DICT_IS_FIXED_PITCH, /* FT_Bool */ 575 PS_DICT_UNDERLINE_POSITION, /* FT_Short */ 576 PS_DICT_UNDERLINE_THICKNESS, /* FT_UShort */ 577 PS_DICT_FS_TYPE, /* FT_UShort */ 578 PS_DICT_ITALIC_ANGLE, /* FT_Long */ 579 580 PS_DICT_MAX = PS_DICT_ITALIC_ANGLE 581 582 } PS_Dict_Keys; 583 584 585 /************************************************************************ 586 * 587 * @function: 588 * FT_Get_PS_Font_Value 589 * 590 * @description: 591 * Retrieve the value for the supplied key from a PostScript font. 592 * 593 * @input: 594 * face :: 595 * PostScript face handle. 596 * 597 * key :: 598 * An enumeration value representing the dictionary key to retrieve. 599 * 600 * idx :: 601 * For array values, this specifies the index to be returned. 602 * 603 * value :: 604 * A pointer to memory into which to write the value. 605 * 606 * valen_len :: 607 * The size, in bytes, of the memory supplied for the value. 608 * 609 * @output: 610 * value :: 611 * The value matching the above key, if it exists. 612 * 613 * @return: 614 * The amount of memory (in bytes) required to hold the requested 615 * value (if it exists, -1 otherwise). 616 * 617 * @note: 618 * The values returned are not pointers into the internal structures of 619 * the face, but are `fresh' copies, so that the memory containing them 620 * belongs to the calling application. This also enforces the 621 * `read-only' nature of these values, i.e., this function cannot be 622 * used to manipulate the face. 623 * 624 * `value' is a void pointer because the values returned can be of 625 * various types. 626 * 627 * If either `value' is NULL or `value_len' is too small, just the 628 * required memory size for the requested entry is returned. 629 * 630 * The `idx' parameter is used, not only to retrieve elements of, for 631 * example, the FontMatrix or FontBBox, but also to retrieve name keys 632 * from the CharStrings dictionary, and the charstrings themselves. It 633 * is ignored for atomic values. 634 * 635 * PS_DICT_BLUE_SCALE returns a value that is scaled up by 1000. To 636 * get the value as in the font stream, you need to divide by 637 * 65536000.0 (to remove the FT_Fixed scale, and the x1000 scale). 638 * 639 * IMPORTANT: Only key/value pairs read by the FreeType interpreter can 640 * be retrieved. So, for example, PostScript procedures such as NP, 641 * ND, and RD are not available. Arbitrary keys are, obviously, not be 642 * available either. 643 * 644 * If the font's format is not PostScript-based, this function returns 645 * the `FT_Err_Invalid_Argument' error code. 646 * 647 */ 648 FT_EXPORT( FT_Long ) 649 FT_Get_PS_Font_Value( FT_Face face, 650 PS_Dict_Keys key, 651 FT_UInt idx, 652 void *value, 653 FT_Long value_len ); 654 655 /* */ 656 657 FT_END_HEADER 658 659 #endif /* __T1TABLES_H__ */ 660 661 662 /* END */ 663
