| 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* t1objs.c */ |
| 4 | /* */ |
| 5 | /* Type 1 objects manager (body). */ |
| 6 | /* */ |
| 7 | /* Copyright 1996-2000 by */ |
| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
| 10 | /* This file is part of the FreeType project, and may only be used, */ |
| 11 | /* modified, and distributed under the terms of the FreeType project */ |
| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 13 | /* this file you indicate that you have read the license and */ |
| 14 | /* understand and accept it fully. */ |
| 15 | /* */ |
| 16 | /***************************************************************************/ |
| 17 | |
| 18 | |
| 19 | #include <freetype/internal/ftdebug.h> |
| 20 | #include <freetype/internal/ftstream.h> |
| 21 | |
| 22 | |
| 23 | #ifdef FT_FLAT_COMPILE |
| 24 | |
| 25 | #include "t1gload.h" |
| 26 | #include "t1load.h" |
| 27 | #include "t1afm.h" |
| 28 | |
| 29 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 30 | #include "t1hinter.h" |
| 31 | #endif |
| 32 | |
| 33 | #else /* FT_FLAT_COMPILE */ |
| 34 | |
| 35 | #include <type1/t1gload.h> |
| 36 | #include <type1/t1load.h> |
| 37 | #include <type1/t1afm.h> |
| 38 | |
| 39 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 40 | #include <type1/t1hinter.h> |
| 41 | #endif |
| 42 | |
| 43 | #endif /* FT_FLAT_COMPILE */ |
| 44 | |
| 45 | |
| 46 | #include <freetype/internal/psnames.h> |
| 47 | |
| 48 | |
| 49 | /*************************************************************************/ |
| 50 | /* */ |
| 51 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 52 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 53 | /* messages during execution. */ |
| 54 | /* */ |
| 55 | #undef FT_COMPONENT |
| 56 | #define FT_COMPONENT trace_t1objs |
| 57 | |
| 58 | |
| 59 | /*************************************************************************/ |
| 60 | /* */ |
| 61 | /* SIZE FUNCTIONS */ |
| 62 | /* */ |
| 63 | /*************************************************************************/ |
| 64 | |
| 65 | |
| 66 | /*************************************************************************/ |
| 67 | /* */ |
| 68 | /* <Function> */ |
| 69 | /* T1_Done_Size */ |
| 70 | /* */ |
| 71 | /* <Description> */ |
| 72 | /* The Type 1 size object destructor. Used to discard a given size */ |
| 73 | /* object. */ |
| 74 | /* */ |
| 75 | /* <Input> */ |
| 76 | /* size :: A handle to the target size object. */ |
| 77 | /* */ |
| 78 | LOCAL_FUNC |
| 79 | void T1_Done_Size( T1_Size size ) |
| 80 | { |
| 81 | if ( size ) |
| 82 | { |
| 83 | |
| 84 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 85 | T1_Done_Size_Hinter( size ); |
| 86 | #endif |
| 87 | |
| 88 | size->valid = 0; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | |
| 93 | /*************************************************************************/ |
| 94 | /* */ |
| 95 | /* <Function> */ |
| 96 | /* T1_Init_Size */ |
| 97 | /* */ |
| 98 | /* <Description> */ |
| 99 | /* The size object initializer. */ |
| 100 | /* */ |
| 101 | /* <Input> */ |
| 102 | /* size :: A handle to the target size object. */ |
| 103 | /* */ |
| 104 | /* <Return> */ |
| 105 | /* FreeTrue error code. 0 means success. */ |
| 106 | /* */ |
| 107 | LOCAL_DEF |
| 108 | FT_Error T1_Init_Size( T1_Size size ) |
| 109 | { |
| 110 | FT_Error error; |
| 111 | |
| 112 | |
| 113 | size->valid = 0; |
| 114 | |
| 115 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 116 | error = T1_New_Size_Hinter( size ); |
| 117 | |
| 118 | return error; |
| 119 | #else |
| 120 | |
| 121 | FT_UNUSED( error ); |
| 122 | |
| 123 | return T1_Err_Ok; |
| 124 | |
| 125 | #endif |
| 126 | } |
| 127 | |
| 128 | |
| 129 | /*************************************************************************/ |
| 130 | /* */ |
| 131 | /* <Function> */ |
| 132 | /* T1_Reset_Size */ |
| 133 | /* */ |
| 134 | /* <Description> */ |
| 135 | /* Resets an instance to a new pointsize/transform. This function is */ |
| 136 | /* in charge of resetting the blue zones,a s well as the stem snap */ |
| 137 | /* tables for a given size. */ |
| 138 | /* */ |
| 139 | /* <Input> */ |
| 140 | /* size :: The target size object. */ |
| 141 | /* */ |
| 142 | /* <Output> */ |
| 143 | /* FreeType error code. 0 means success. */ |
| 144 | /* */ |
| 145 | LOCAL_FUNC |
| 146 | FT_Error T1_Reset_Size( T1_Size size ) |
| 147 | { |
| 148 | /* recompute ascender, descender, etc. */ |
| 149 | T1_Face face = (T1_Face)size->root.face; |
| 150 | FT_Size_Metrics* metrics = &size->root.metrics; |
| 151 | |
| 152 | |
| 153 | if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 ) |
| 154 | return FT_Err_Invalid_Argument; |
| 155 | |
| 156 | /* Compute root ascender, descender, test height, and max_advance */ |
| 157 | metrics->ascender = ( FT_MulFix( face->root.ascender, |
| 158 | metrics->y_scale ) + 32 ) & -64; |
| 159 | metrics->descender = ( FT_MulFix( face->root.descender, |
| 160 | metrics->y_scale ) + 32 ) & -64; |
| 161 | metrics->height = ( FT_MulFix( face->root.height, |
| 162 | metrics->y_scale ) + 32 ) & -64; |
| 163 | metrics->max_advance = ( FT_MulFix( face->root.max_advance_width, |
| 164 | metrics->x_scale ) + 32 ) & -64; |
| 165 | |
| 166 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 167 | return T1_Reset_Size_Hinter( size ); |
| 168 | #else |
| 169 | return 0; |
| 170 | #endif |
| 171 | } |
| 172 | |
| 173 | |
| 174 | /*************************************************************************/ |
| 175 | /* */ |
| 176 | /* FACE FUNCTIONS */ |
| 177 | /* */ |
| 178 | /*************************************************************************/ |
| 179 | |
| 180 | |
| 181 | /*************************************************************************/ |
| 182 | /* */ |
| 183 | /* <Function> */ |
| 184 | /* T1_Done_Face */ |
| 185 | /* */ |
| 186 | /* <Description> */ |
| 187 | /* The face object destructor. */ |
| 188 | /* */ |
| 189 | /* <Input> */ |
| 190 | /* face :: A typeless pointer to the face object to destroy. */ |
| 191 | /* */ |
| 192 | LOCAL_FUNC |
| 193 | void T1_Done_Face( T1_Face face ) |
| 194 | { |
| 195 | FT_Memory memory; |
| 196 | T1_Font* type1 = &face->type1; |
| 197 | |
| 198 | |
| 199 | if ( face ) |
| 200 | { |
| 201 | memory = face->root.memory; |
| 202 | |
| 203 | /* release font info strings */ |
| 204 | { |
| 205 | T1_FontInfo* info = &type1->font_info; |
| 206 | |
| 207 | |
| 208 | FREE( info->version ); |
| 209 | FREE( info->notice ); |
| 210 | FREE( info->full_name ); |
| 211 | FREE( info->family_name ); |
| 212 | FREE( info->weight ); |
| 213 | } |
| 214 | |
| 215 | /* release top dictionary */ |
| 216 | FREE( type1->charstrings_len ); |
| 217 | FREE( type1->charstrings ); |
| 218 | FREE( type1->glyph_names ); |
| 219 | |
| 220 | FREE( type1->subrs ); |
| 221 | FREE( type1->subrs_len ); |
| 222 | |
| 223 | FREE( type1->subrs_block ); |
| 224 | FREE( type1->charstrings_block ); |
| 225 | FREE( type1->glyph_names_block ); |
| 226 | |
| 227 | FREE( type1->encoding.char_index ); |
| 228 | FREE( type1->font_name ); |
| 229 | |
| 230 | #ifndef T1_CONFIG_OPTION_NO_AFM |
| 231 | /* release afm data if present */ |
| 232 | if ( face->afm_data ) |
| 233 | T1_Done_AFM( memory, (T1_AFM*)face->afm_data ); |
| 234 | #endif |
| 235 | |
| 236 | /* release unicode map, if any */ |
| 237 | FREE( face->unicode_map.maps ); |
| 238 | face->unicode_map.num_maps = 0; |
| 239 | |
| 240 | face->root.family_name = 0; |
| 241 | face->root.style_name = 0; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | |
| 246 | /*************************************************************************/ |
| 247 | /* */ |
| 248 | /* <Function> */ |
| 249 | /* T1_Init_Face */ |
| 250 | /* */ |
| 251 | /* <Description> */ |
| 252 | /* The face object constructor. */ |
| 253 | /* */ |
| 254 | /* <Input> */ |
| 255 | /* stream :: input stream where to load font data. */ |
| 256 | /* */ |
| 257 | /* face_index :: The index of the font face in the resource. */ |
| 258 | /* */ |
| 259 | /* num_params :: Number of additional generic parameters. Ignored. */ |
| 260 | /* */ |
| 261 | /* params :: Additional generic parameters. Ignored. */ |
| 262 | /* */ |
| 263 | /* <InOut> */ |
| 264 | /* face :: The face record to build. */ |
| 265 | /* */ |
| 266 | /* <Return> */ |
| 267 | /* FreeType error code. 0 means success. */ |
| 268 | /* */ |
| 269 | LOCAL_FUNC |
| 270 | FT_Error T1_Init_Face( FT_Stream stream, |
| 271 | T1_Face face, |
| 272 | FT_Int face_index, |
| 273 | FT_Int num_params, |
| 274 | FT_Parameter* params ) |
| 275 | { |
| 276 | T1_Tokenizer tokenizer; |
| 277 | FT_Error error; |
| 278 | PSNames_Interface* psnames; |
| 279 | |
| 280 | FT_UNUSED( num_params ); |
| 281 | FT_UNUSED( params ); |
| 282 | FT_UNUSED( face_index ); |
| 283 | FT_UNUSED( face ); |
| 284 | |
| 285 | |
| 286 | face->root.num_faces = 1; |
| 287 | |
| 288 | psnames = (PSNames_Interface*)face->psnames; |
| 289 | if ( !psnames ) |
| 290 | { |
| 291 | psnames = (PSNames_Interface*) |
| 292 | FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), |
| 293 | "psnames" ); |
| 294 | |
| 295 | face->psnames = psnames; |
| 296 | } |
| 297 | |
| 298 | /* open the tokenizer, this will also check the font format */ |
| 299 | error = New_Tokenizer( stream, &tokenizer ); |
| 300 | if ( error ) |
| 301 | goto Fail; |
| 302 | |
| 303 | /* if we just wanted to check the format, leave successfully now */ |
| 304 | if ( face_index < 0 ) |
| 305 | goto Leave; |
| 306 | |
| 307 | /* check the face index */ |
| 308 | if ( face_index != 0 ) |
| 309 | { |
| 310 | FT_ERROR(( "T1_Init_Face: invalid face index\n" )); |
| 311 | error = T1_Err_Invalid_Argument; |
| 312 | goto Leave; |
| 313 | } |
| 314 | |
| 315 | /* Now, load the font program into the face object */ |
| 316 | { |
| 317 | T1_Parser parser; |
| 318 | |
| 319 | |
| 320 | Init_T1_Parser( &parser, face, tokenizer ); |
| 321 | error = Parse_T1_FontProgram( &parser ); |
| 322 | if ( error ) |
| 323 | goto Leave; |
| 324 | |
| 325 | /* Init the face object fields */ |
| 326 | /* Now set up root face fields */ |
| 327 | { |
| 328 | FT_Face root = (FT_Face)&face->root; |
| 329 | T1_Font* type1 = &face->type1; |
| 330 | |
| 331 | |
| 332 | root->num_glyphs = type1->num_glyphs; |
| 333 | root->num_charmaps = 1; |
| 334 | |
| 335 | root->face_index = face_index; |
| 336 | root->face_flags = FT_FACE_FLAG_SCALABLE; |
| 337 | |
| 338 | root->face_flags |= FT_FACE_FLAG_HORIZONTAL; |
| 339 | |
| 340 | root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; |
| 341 | |
| 342 | if ( type1->font_info.is_fixed_pitch ) |
| 343 | root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; |
| 344 | |
| 345 | /* XXX: TODO -- add kerning with .afm support */ |
| 346 | |
| 347 | /* get style name - be careful, some broken fonts only */ |
| 348 | /* have a `/FontName' dictionary entry! */ |
| 349 | root->family_name = type1->font_info.family_name; |
| 350 | if ( root->family_name ) |
| 351 | { |
| 352 | char* full = type1->font_info.full_name; |
| 353 | char* family = root->family_name; |
| 354 | |
| 355 | |
| 356 | while ( *family && *full == *family ) |
| 357 | { |
| 358 | family++; |
| 359 | full++; |
| 360 | } |
| 361 | |
| 362 | root->style_name = ( *full == ' ' ? full + 1 |
| 363 | : (char *)"Regular" ); |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | /* do we have a `/FontName'? */ |
| 368 | if (type1->font_name) |
| 369 | { |
| 370 | root->family_name = type1->font_name; |
| 371 | root->style_name = "Regular"; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /* no embedded bitmap support */ |
| 376 | root->num_fixed_sizes = 0; |
| 377 | root->available_sizes = 0; |
| 378 | |
| 379 | root->bbox = type1->font_bbox; |
| 380 | root->units_per_EM = 1000; |
| 381 | root->ascender = (FT_Short)type1->font_bbox.yMax; |
| 382 | root->descender = -(FT_Short)type1->font_bbox.yMin; |
| 383 | root->height = ( ( root->ascender + root->descender) * 12 ) |
| 384 | / 10; |
| 385 | |
| 386 | /* now compute the maximum advance width */ |
| 387 | |
| 388 | root->max_advance_width = type1->private_dict.standard_width[0]; |
| 389 | |
| 390 | /* compute max advance width for proportional fonts */ |
| 391 | if ( !type1->font_info.is_fixed_pitch ) |
| 392 | { |
| 393 | FT_Int max_advance; |
| 394 | |
| 395 | |
| 396 | error = T1_Compute_Max_Advance( face, &max_advance ); |
| 397 | |
| 398 | /* in case of error, keep the standard width */ |
| 399 | if ( !error ) |
| 400 | root->max_advance_width = max_advance; |
| 401 | else |
| 402 | error = 0; /* clear error */ |
| 403 | } |
| 404 | |
| 405 | root->max_advance_height = root->height; |
| 406 | |
| 407 | root->underline_position = type1->font_info.underline_position; |
| 408 | root->underline_thickness = type1->font_info.underline_thickness; |
| 409 | |
| 410 | root->max_points = 0; |
| 411 | root->max_contours = 0; |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | /* charmap support - synthetize unicode charmap when possible */ |
| 416 | { |
| 417 | FT_Face root = &face->root; |
| 418 | FT_CharMap charmap = face->charmaprecs; |
| 419 | |
| 420 | |
| 421 | /* synthesize a Unicode charmap if there is support in the `PSNames' */ |
| 422 | /* module.. */ |
| 423 | if ( face->psnames ) |
| 424 | { |
| 425 | PSNames_Interface* psnames = (PSNames_Interface*)face->psnames; |
| 426 | |
| 427 | |
| 428 | if ( psnames->unicode_value ) |
| 429 | { |
| 430 | error = psnames->build_unicodes( |
| 431 | root->memory, |
| 432 | face->type1.num_glyphs, |
| 433 | (const char**)face->type1.glyph_names, |
| 434 | &face->unicode_map ); |
| 435 | if ( !error ) |
| 436 | { |
| 437 | root->charmap = charmap; |
| 438 | charmap->face = (FT_Face)face; |
| 439 | charmap->encoding = ft_encoding_unicode; |
| 440 | charmap->platform_id = 3; |
| 441 | charmap->encoding_id = 1; |
| 442 | charmap++; |
| 443 | } |
| 444 | |
| 445 | /* simply clear the error in case of failure (which really) */ |
| 446 | /* means that out of memory or no unicode glyph names */ |
| 447 | error = 0; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | /* now, support either the standard, expert, or custom encodings */ |
| 452 | charmap->face = (FT_Face)face; |
| 453 | charmap->platform_id = 7; /* a new platform id for Adobe fonts ?? */ |
| 454 | |
| 455 | switch ( face->type1.encoding_type ) |
| 456 | { |
| 457 | case t1_encoding_standard: |
| 458 | charmap->encoding = ft_encoding_adobe_standard; |
| 459 | charmap->encoding_id = 0; |
| 460 | break; |
| 461 | |
| 462 | case t1_encoding_expert: |
| 463 | charmap->encoding = ft_encoding_adobe_expert; |
| 464 | charmap->encoding_id = 1; |
| 465 | break; |
| 466 | |
| 467 | default: |
| 468 | charmap->encoding = ft_encoding_adobe_custom; |
| 469 | charmap->encoding_id = 2; |
| 470 | break; |
| 471 | } |
| 472 | |
| 473 | root->charmaps = face->charmaps; |
| 474 | root->num_charmaps = charmap - face->charmaprecs + 1; |
| 475 | face->charmaps[0] = &face->charmaprecs[0]; |
| 476 | face->charmaps[1] = &face->charmaprecs[1]; |
| 477 | } |
| 478 | |
| 479 | Leave: |
| 480 | Done_Tokenizer( tokenizer ); |
| 481 | |
| 482 | Fail: |
| 483 | return error; |
| 484 | } |
| 485 | |
| 486 | |
| 487 | /*************************************************************************/ |
| 488 | /* */ |
| 489 | /* <Function> */ |
| 490 | /* T1_Done_GlyphSlot */ |
| 491 | /* */ |
| 492 | /* <Description> */ |
| 493 | /* The glyph slot object destructor. */ |
| 494 | /* */ |
| 495 | /* <Input> */ |
| 496 | /* glyph :: The glyph slot handle to destroy. */ |
| 497 | /* */ |
| 498 | LOCAL_FUNC |
| 499 | void T1_Done_GlyphSlot( T1_GlyphSlot glyph ) |
| 500 | { |
| 501 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 502 | |
| 503 | T1_Done_Glyph_Hinter( glyph ); |
| 504 | |
| 505 | #else |
| 506 | |
| 507 | FT_UNUSED( glyph ); |
| 508 | |
| 509 | #endif |
| 510 | } |
| 511 | |
| 512 | |
| 513 | /*************************************************************************/ |
| 514 | /* */ |
| 515 | /* <Function> */ |
| 516 | /* T1_Init_GlyphSlot */ |
| 517 | /* */ |
| 518 | /* <Description> */ |
| 519 | /* The glyph slot object constructor. */ |
| 520 | /* */ |
| 521 | /* <Input> */ |
| 522 | /* glyph :: The glyph slot handle to initialize. */ |
| 523 | /* */ |
| 524 | LOCAL_FUNC |
| 525 | FT_Error T1_Init_GlyphSlot( T1_GlyphSlot glyph ) |
| 526 | { |
| 527 | FT_Error error = FT_Err_Ok; |
| 528 | |
| 529 | |
| 530 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 531 | |
| 532 | error = T1_New_Glyph_Hinter( glyph ); |
| 533 | |
| 534 | #else |
| 535 | |
| 536 | FT_UNUSED( glyph ); |
| 537 | |
| 538 | #endif |
| 539 | |
| 540 | return error; |
| 541 | } |
| 542 | |
| 543 | |
| 544 | /* END */ |