| 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* t1gload.c */ |
| 4 | /* */ |
| 5 | /* Type 1 Glyph Loader (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 | #ifdef FT_FLAT_COMPILE |
| 20 | |
| 21 | #include "t1gload.h" |
| 22 | |
| 23 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 24 | #include "t1hinter.h" |
| 25 | #endif |
| 26 | |
| 27 | #else /* FT_FLAT_COMPILE */ |
| 28 | |
| 29 | #include <type1/t1gload.h> |
| 30 | |
| 31 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 32 | #include <type1/t1hinter.h> |
| 33 | #endif |
| 34 | |
| 35 | #endif /* FT_FLAT_COMPILE */ |
| 36 | |
| 37 | |
| 38 | #include <freetype/internal/ftdebug.h> |
| 39 | #include <freetype/internal/ftstream.h> |
| 40 | #include <freetype/ftoutln.h> |
| 41 | |
| 42 | #include <string.h> /* for strcmp() */ |
| 43 | |
| 44 | |
| 45 | /*************************************************************************/ |
| 46 | /* */ |
| 47 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 48 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 49 | /* messages during execution. */ |
| 50 | /* */ |
| 51 | #undef FT_COMPONENT |
| 52 | #define FT_COMPONENT trace_t1gload |
| 53 | |
| 54 | |
| 55 | /*************************************************************************/ |
| 56 | /*************************************************************************/ |
| 57 | /*************************************************************************/ |
| 58 | /********** *********/ |
| 59 | /********** *********/ |
| 60 | /********** GENERIC CHARSTRING PARSING *********/ |
| 61 | /********** *********/ |
| 62 | /********** *********/ |
| 63 | /*************************************************************************/ |
| 64 | /*************************************************************************/ |
| 65 | /*************************************************************************/ |
| 66 | |
| 67 | |
| 68 | static |
| 69 | void T1_Reset_Builder( T1_Builder* builder, |
| 70 | FT_Bool reset_base ) |
| 71 | { |
| 72 | builder->pos_x = 0; |
| 73 | builder->pos_y = 0; |
| 74 | |
| 75 | builder->left_bearing.x = 0; |
| 76 | builder->left_bearing.y = 0; |
| 77 | builder->advance.x = 0; |
| 78 | builder->advance.y = 0; |
| 79 | |
| 80 | builder->pass = 0; |
| 81 | builder->hint_point = 0; |
| 82 | |
| 83 | if ( builder->loader ) |
| 84 | { |
| 85 | if ( reset_base ) |
| 86 | FT_GlyphLoader_Rewind( builder->loader ); |
| 87 | |
| 88 | FT_GlyphLoader_Prepare( builder->loader ); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | |
| 93 | /*************************************************************************/ |
| 94 | /* */ |
| 95 | /* <Function> */ |
| 96 | /* T1_Init_Builder */ |
| 97 | /* */ |
| 98 | /* <Description> */ |
| 99 | /* Initializes a given glyph builder. */ |
| 100 | /* */ |
| 101 | /* <InOut> */ |
| 102 | /* builder :: A pointer to the glyph builder to initialize. */ |
| 103 | /* */ |
| 104 | /* <Input> */ |
| 105 | /* face :: The current face object. */ |
| 106 | /* */ |
| 107 | /* size :: The current size object. */ |
| 108 | /* */ |
| 109 | /* glyph :: The current glyph object. */ |
| 110 | /* */ |
| 111 | /* funcs :: Glyph builder functions (or `methods'). */ |
| 112 | /* */ |
| 113 | LOCAL_FUNC |
| 114 | void T1_Init_Builder( T1_Builder* builder, |
| 115 | T1_Face face, |
| 116 | T1_Size size, |
| 117 | T1_GlyphSlot glyph, |
| 118 | const T1_Builder_Funcs* funcs ) |
| 119 | { |
| 120 | builder->funcs = *funcs; |
| 121 | builder->path_begun = 0; |
| 122 | builder->load_points = 1; |
| 123 | |
| 124 | builder->face = face; |
| 125 | builder->size = size; |
| 126 | builder->glyph = glyph; |
| 127 | builder->memory = face->root.memory; |
| 128 | |
| 129 | if ( glyph ) |
| 130 | { |
| 131 | FT_GlyphLoader* loader = FT_SLOT( glyph )->loader; |
| 132 | |
| 133 | |
| 134 | builder->loader = loader; |
| 135 | builder->base = &loader->base.outline; |
| 136 | builder->current = &loader->current.outline; |
| 137 | } |
| 138 | |
| 139 | if ( size ) |
| 140 | { |
| 141 | builder->scale_x = size->root.metrics.x_scale; |
| 142 | builder->scale_y = size->root.metrics.y_scale; |
| 143 | } |
| 144 | |
| 145 | T1_Reset_Builder( builder, 1 ); |
| 146 | } |
| 147 | |
| 148 | |
| 149 | /*************************************************************************/ |
| 150 | /* */ |
| 151 | /* <Function> */ |
| 152 | /* T1_Done_Builder */ |
| 153 | /* */ |
| 154 | /* <Description> */ |
| 155 | /* Finalizes a given glyph builder. Its contents can still be used */ |
| 156 | /* after the call, but the function saves important information */ |
| 157 | /* within the corresponding glyph slot. */ |
| 158 | /* */ |
| 159 | /* <Input> */ |
| 160 | /* builder :: A pointer to the glyph builder to finalize. */ |
| 161 | /* */ |
| 162 | LOCAL_FUNC |
| 163 | void T1_Done_Builder( T1_Builder* builder ) |
| 164 | { |
| 165 | T1_GlyphSlot glyph = builder->glyph; |
| 166 | |
| 167 | |
| 168 | if ( glyph ) |
| 169 | glyph->root.outline = *builder->base; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | /*************************************************************************/ |
| 174 | /* */ |
| 175 | /* <Function> */ |
| 176 | /* T1_Init_Decoder */ |
| 177 | /* */ |
| 178 | /* <Description> */ |
| 179 | /* Initializes a given glyph decoder. */ |
| 180 | /* */ |
| 181 | /* <InOut> */ |
| 182 | /* decoder :: A pointer to the glyph builder to initialize. */ |
| 183 | /* */ |
| 184 | /* <Input> */ |
| 185 | /* funcs :: The hinting functions interface. */ |
| 186 | /* */ |
| 187 | LOCAL_FUNC |
| 188 | void T1_Init_Decoder( T1_Decoder* decoder, |
| 189 | const T1_Hinter_Funcs* funcs ) |
| 190 | { |
| 191 | decoder->hinter = *funcs; /* copy hinter interface */ |
| 192 | decoder->top = 0; |
| 193 | decoder->zone = 0; |
| 194 | |
| 195 | decoder->flex_state = 0; |
| 196 | decoder->num_flex_vectors = 0; |
| 197 | |
| 198 | /* Clear loader */ |
| 199 | MEM_Set( &decoder->builder, 0, sizeof ( decoder->builder ) ); |
| 200 | } |
| 201 | |
| 202 | |
| 203 | /*************************************************************************/ |
| 204 | /* */ |
| 205 | /* <Function> */ |
| 206 | /* lookup_glyph_by_stdcharcode */ |
| 207 | /* */ |
| 208 | /* <Description> */ |
| 209 | /* Looks up a given glyph by its StandardEncoding charcode. Used */ |
| 210 | /* to implement the SEAC Type 1 operator. */ |
| 211 | /* */ |
| 212 | /* <Input> */ |
| 213 | /* face :: The current face object. */ |
| 214 | /* */ |
| 215 | /* charcode :: The character code to look for. */ |
| 216 | /* */ |
| 217 | /* <Return> */ |
| 218 | /* A glyph index in the font face. Returns -1 if the corresponding */ |
| 219 | /* glyph wasn't found. */ |
| 220 | /* */ |
| 221 | static |
| 222 | FT_Int lookup_glyph_by_stdcharcode( T1_Face face, |
| 223 | FT_Int charcode ) |
| 224 | { |
| 225 | FT_Int n; |
| 226 | const FT_String* glyph_name; |
| 227 | PSNames_Interface* psnames = (PSNames_Interface*)face->psnames; |
| 228 | |
| 229 | |
| 230 | /* check range of standard char code */ |
| 231 | if ( charcode < 0 || charcode > 255 ) |
| 232 | return -1; |
| 233 | |
| 234 | glyph_name = psnames->adobe_std_strings( |
| 235 | psnames->adobe_std_encoding[charcode] ); |
| 236 | |
| 237 | for ( n = 0; n < face->type1.num_glyphs; n++ ) |
| 238 | { |
| 239 | FT_String* name = (FT_String*)face->type1.glyph_names[n]; |
| 240 | |
| 241 | |
| 242 | if ( name && strcmp( name, glyph_name ) == 0 ) |
| 243 | return n; |
| 244 | } |
| 245 | |
| 246 | return -1; |
| 247 | } |
| 248 | |
| 249 | |
| 250 | /*************************************************************************/ |
| 251 | /* */ |
| 252 | /* <Function> */ |
| 253 | /* t1operator_seac */ |
| 254 | /* */ |
| 255 | /* <Description> */ |
| 256 | /* Implements the `seac' Type 1 operator for a Type 1 decoder. */ |
| 257 | /* */ |
| 258 | /* <Input> */ |
| 259 | /* decoder :: The current CID decoder. */ |
| 260 | /* */ |
| 261 | /* asb :: The accent's side bearing. */ |
| 262 | /* */ |
| 263 | /* adx :: The horizontal offset of the accent. */ |
| 264 | /* */ |
| 265 | /* ady :: The vertical offset of the accent. */ |
| 266 | /* */ |
| 267 | /* bchar :: The base character's StandardEncoding charcode. */ |
| 268 | /* */ |
| 269 | /* achar :: The accent character's StandardEncoding charcode. */ |
| 270 | /* */ |
| 271 | /* <Return> */ |
| 272 | /* FreeType error code. 0 means success. */ |
| 273 | /* */ |
| 274 | static |
| 275 | FT_Error t1operator_seac( T1_Decoder* decoder, |
| 276 | FT_Pos asb, |
| 277 | FT_Pos adx, |
| 278 | FT_Pos ady, |
| 279 | FT_Int bchar, |
| 280 | FT_Int achar ) |
| 281 | { |
| 282 | FT_Error error; |
| 283 | FT_Int bchar_index, achar_index, n_base_points; |
| 284 | FT_Outline* base = decoder->builder.base; |
| 285 | FT_Vector left_bearing, advance; |
| 286 | T1_Face face = decoder->builder.face; |
| 287 | T1_Font* type1 = &face->type1; |
| 288 | |
| 289 | |
| 290 | bchar_index = lookup_glyph_by_stdcharcode( face, bchar ); |
| 291 | achar_index = lookup_glyph_by_stdcharcode( face, achar ); |
| 292 | |
| 293 | if ( bchar_index < 0 || achar_index < 0 ) |
| 294 | { |
| 295 | FT_ERROR(( "t1operator_seac:" )); |
| 296 | FT_ERROR(( " invalid seac character code arguments\n" )); |
| 297 | return T1_Err_Syntax_Error; |
| 298 | } |
| 299 | |
| 300 | /* if we are trying to load a composite glyph, do not load the */ |
| 301 | /* accent character and return the array of subglyphs. */ |
| 302 | if ( decoder->builder.no_recurse ) |
| 303 | { |
| 304 | FT_GlyphSlot glyph = (FT_GlyphSlot)decoder->builder.glyph; |
| 305 | FT_GlyphLoader* loader = glyph->loader; |
| 306 | FT_SubGlyph* subg; |
| 307 | |
| 308 | |
| 309 | /* reallocate subglyph array if necessary */ |
| 310 | error = FT_GlyphLoader_Check_Subglyphs( loader, 2 ); |
| 311 | if ( error ) |
| 312 | goto Exit; |
| 313 | |
| 314 | subg = loader->current.subglyphs; |
| 315 | |
| 316 | /* subglyph 0 = base character */ |
| 317 | subg->index = bchar_index; |
| 318 | subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES | |
| 319 | FT_SUBGLYPH_FLAG_USE_MY_METRICS; |
| 320 | subg->arg1 = 0; |
| 321 | subg->arg2 = 0; |
| 322 | subg++; |
| 323 | |
| 324 | /* subglyph 1 = accent character */ |
| 325 | subg->index = achar_index; |
| 326 | subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES; |
| 327 | subg->arg1 = adx - asb; |
| 328 | subg->arg2 = ady; |
| 329 | |
| 330 | /* set up remaining glyph fields */ |
| 331 | glyph->num_subglyphs = 2; |
| 332 | glyph->subglyphs = loader->current.subglyphs; |
| 333 | glyph->format = ft_glyph_format_composite; |
| 334 | |
| 335 | loader->current.num_subglyphs = 2; |
| 336 | goto Exit; |
| 337 | } |
| 338 | |
| 339 | /* First load `bchar' in builder */ |
| 340 | /* now load the unscaled outline */ |
| 341 | |
| 342 | if ( decoder->builder.loader ) |
| 343 | FT_GlyphLoader_Prepare( decoder->builder.loader ); /* prepare loader */ |
| 344 | |
| 345 | error = T1_Parse_CharStrings( decoder, |
| 346 | type1->charstrings [bchar_index], |
| 347 | type1->charstrings_len[bchar_index], |
| 348 | type1->num_subrs, |
| 349 | type1->subrs, |
| 350 | type1->subrs_len ); |
| 351 | if ( error ) |
| 352 | goto Exit; |
| 353 | |
| 354 | n_base_points = base->n_points; |
| 355 | |
| 356 | /* save the left bearing and width of the base character */ |
| 357 | /* as they will be erased by the next load. */ |
| 358 | |
| 359 | left_bearing = decoder->builder.left_bearing; |
| 360 | advance = decoder->builder.advance; |
| 361 | |
| 362 | decoder->builder.left_bearing.x = 0; |
| 363 | decoder->builder.left_bearing.y = 0; |
| 364 | |
| 365 | /* Now load `achar' on top of the base outline */ |
| 366 | error = T1_Parse_CharStrings( decoder, |
| 367 | type1->charstrings [achar_index], |
| 368 | type1->charstrings_len[achar_index], |
| 369 | type1->num_subrs, |
| 370 | type1->subrs, |
| 371 | type1->subrs_len ); |
| 372 | if ( error ) |
| 373 | return error; |
| 374 | |
| 375 | /* restore the left side bearing and */ |
| 376 | /* advance width of the base character */ |
| 377 | |
| 378 | decoder->builder.left_bearing = left_bearing; |
| 379 | decoder->builder.advance = advance; |
| 380 | |
| 381 | /* Finally, move the accent */ |
| 382 | if ( decoder->builder.load_points ) |
| 383 | { |
| 384 | FT_Outline dummy; |
| 385 | |
| 386 | |
| 387 | dummy.n_points = base->n_points - n_base_points; |
| 388 | dummy.points = base->points + n_base_points; |
| 389 | |
| 390 | FT_Outline_Translate( &dummy, adx - asb, ady ); |
| 391 | } |
| 392 | |
| 393 | Exit: |
| 394 | return error; |
| 395 | } |
| 396 | |
| 397 | |
| 398 | /*************************************************************************/ |
| 399 | /* */ |
| 400 | /* <Function> */ |
| 401 | /* t1operator_flex */ |
| 402 | /* */ |
| 403 | /* <Description> */ |
| 404 | /* Implements the `flex' Type 1 operator for a Type 1 decoder. */ |
| 405 | /* */ |
| 406 | /* <Input> */ |
| 407 | /* decoder :: The current Type 1 decoder. */ |
| 408 | /* threshold :: The threshold. */ |
| 409 | /* end_x :: The horizontal position of the final flex point. */ |
| 410 | /* end_y :: The vertical position of the final flex point. */ |
| 411 | /* */ |
| 412 | /* <Return> */ |
| 413 | /* FreeType error code. 0 means success. */ |
| 414 | /* */ |
| 415 | static |
| 416 | FT_Error t1operator_flex( T1_Decoder* decoder, |
| 417 | FT_Pos threshold, |
| 418 | FT_Pos end_x, |
| 419 | FT_Pos end_y ) |
| 420 | { |
| 421 | FT_Vector vec; |
| 422 | FT_Vector* flex = decoder->flex_vectors; |
| 423 | FT_Int n; |
| 424 | |
| 425 | FT_UNUSED( threshold ); |
| 426 | FT_UNUSED( end_x ); |
| 427 | FT_UNUSED( end_y ); |
| 428 | |
| 429 | |
| 430 | /* we don't even try to test the threshold in the non-hinting */ |
| 431 | /* builder, even if the flex operator is said to be a path */ |
| 432 | /* construction statement in the specification. This is better */ |
| 433 | /* left to the hinter. */ |
| 434 | |
| 435 | flex = decoder->flex_vectors; |
| 436 | vec = *flex++; |
| 437 | |
| 438 | for ( n = 0; n < 6; n++ ) |
| 439 | { |
| 440 | flex->x += vec.x; |
| 441 | flex->y += vec.y; |
| 442 | |
| 443 | vec = *flex++; |
| 444 | } |
| 445 | |
| 446 | flex = decoder->flex_vectors; |
| 447 | |
| 448 | return decoder->builder.funcs.rcurve_to( &decoder->builder, |
| 449 | flex[0].x, flex[0].y, |
| 450 | flex[1].x, flex[1].y, |
| 451 | flex[2].x, flex[2].y ) || |
| 452 | |
| 453 | decoder->builder.funcs.rcurve_to( &decoder->builder, |
| 454 | flex[3].x, flex[3].y, |
| 455 | flex[4].x, flex[4].y, |
| 456 | flex[5].x, flex[5].y ); |
| 457 | } |
| 458 | |
| 459 | |
| 460 | /*************************************************************************/ |
| 461 | /* */ |
| 462 | /* <Function> */ |
| 463 | /* T1_Parse_CharStrings */ |
| 464 | /* */ |
| 465 | /* <Description> */ |
| 466 | /* Parses a given Type 1 charstrings program. */ |
| 467 | /* */ |
| 468 | /* <Input> */ |
| 469 | /* decoder :: The current Type 1 decoder. */ |
| 470 | /* */ |
| 471 | /* charstring_base :: The base address of the charstring stream. */ |
| 472 | /* */ |
| 473 | /* charstring_len :: The length in bytes of the charstring stream. */ |
| 474 | /* */ |
| 475 | /* num_subrs :: The number of sub-routines. */ |
| 476 | /* */ |
| 477 | /* subrs_base :: An array of sub-routines addresses. */ |
| 478 | /* */ |
| 479 | /* subrs_len :: An array of sub-routines lengths. */ |
| 480 | /* */ |
| 481 | /* <Return> */ |
| 482 | /* Free error code. 0 means success. */ |
| 483 | /* */ |
| 484 | LOCAL_FUNC |
| 485 | FT_Error T1_Parse_CharStrings( T1_Decoder* decoder, |
| 486 | FT_Byte* charstring_base, |
| 487 | FT_Int charstring_len, |
| 488 | FT_Int num_subrs, |
| 489 | FT_Byte** subrs_base, |
| 490 | FT_Int* subrs_len ) |
| 491 | { |
| 492 | FT_Error error; |
| 493 | T1_Decoder_Zone* zone; |
| 494 | FT_Byte* ip; |
| 495 | FT_Byte* limit; |
| 496 | T1_Builder* builder = &decoder->builder; |
| 497 | T1_Builder_Funcs* builds = &builder->funcs; |
| 498 | T1_Hinter_Funcs* hints = &decoder->hinter; |
| 499 | |
| 500 | static |
| 501 | const FT_Int args_count[op_max] = |
| 502 | { |
| 503 | 0, /* none */ |
| 504 | 0, /* endchar */ |
| 505 | 2, /* hsbw */ |
| 506 | 5, /* seac */ |
| 507 | 4, /* sbw */ |
| 508 | 0, /* closepath */ |
| 509 | 1, /* hlineto */ |
| 510 | 1, /* hmoveto */ |
| 511 | 4, /* hvcurveto */ |
| 512 | 2, /* rlineto */ |
| 513 | 2, /* rmoveto */ |
| 514 | 6, /* rrcurveto */ |
| 515 | 4, /* vhcurveto */ |
| 516 | 1, /* vlineto */ |
| 517 | 1, /* vmoveto */ |
| 518 | 0, /* dotsection */ |
| 519 | 2, /* hstem */ |
| 520 | 6, /* hstem3 */ |
| 521 | 2, /* vstem */ |
| 522 | 6, /* vstem3 */ |
| 523 | 2, /* div */ |
| 524 | -1, /* callothersubr */ |
| 525 | 1, /* callsubr */ |
| 526 | 0, /* pop */ |
| 527 | 0, /* return */ |
| 528 | 2 /* setcurrentpoint */ |
| 529 | }; |
| 530 | |
| 531 | |
| 532 | /* First of all, initialize the decoder */ |
| 533 | decoder->top = decoder->stack; |
| 534 | decoder->zone = decoder->zones; |
| 535 | zone = decoder->zones; |
| 536 | |
| 537 | builder->path_begun = 0; |
| 538 | |
| 539 | zone->base = charstring_base; |
| 540 | limit = zone->limit = charstring_base + charstring_len; |
| 541 | ip = zone->cursor = zone->base; |
| 542 | |
| 543 | error = T1_Err_Ok; |
| 544 | |
| 545 | /* now, execute loop */ |
| 546 | while ( ip < limit ) |
| 547 | { |
| 548 | FT_Int* top = decoder->top; |
| 549 | T1_Operator op = op_none; |
| 550 | FT_Long value = 0; |
| 551 | |
| 552 | |
| 553 | /* Start with the decompression of operator or value */ |
| 554 | switch ( *ip++ ) |
| 555 | { |
| 556 | case 1: |
| 557 | op = op_hstem; |
| 558 | break; |
| 559 | |
| 560 | case 3: |
| 561 | op = op_vstem; |
| 562 | break; |
| 563 | case 4: |
| 564 | op = op_vmoveto; |
| 565 | break; |
| 566 | case 5: |
| 567 | op = op_rlineto; |
| 568 | break; |
| 569 | case 6: |
| 570 | op = op_hlineto; |
| 571 | break; |
| 572 | case 7: |
| 573 | op = op_vlineto; |
| 574 | break; |
| 575 | case 8: |
| 576 | op = op_rrcurveto; |
| 577 | break; |
| 578 | case 9: |
| 579 | op = op_closepath; |
| 580 | break; |
| 581 | case 10: |
| 582 | op = op_callsubr; |
| 583 | break; |
| 584 | case 11: |
| 585 | op = op_return; |
| 586 | break; |
| 587 | |
| 588 | case 13: |
| 589 | op = op_hsbw; |
| 590 | break; |
| 591 | case 14: |
| 592 | op = op_endchar; |
| 593 | break; |
| 594 | |
| 595 | case 21: |
| 596 | op = op_rmoveto; |
| 597 | break; |
| 598 | case 22: |
| 599 | op = op_hmoveto; |
| 600 | break; |
| 601 | |
| 602 | case 30: |
| 603 | op = op_vhcurveto; |
| 604 | break; |
| 605 | case 31: |
| 606 | op = op_hvcurveto; |
| 607 | break; |
| 608 | |
| 609 | case 12: |
| 610 | if ( ip > limit ) |
| 611 | { |
| 612 | FT_ERROR(( "T1_Parse_CharStrings: invalid escape (12+EOF)\n" )); |
| 613 | goto Syntax_Error; |
| 614 | } |
| 615 | |
| 616 | switch ( *ip++ ) |
| 617 | { |
| 618 | case 0: |
| 619 | op = op_dotsection; |
| 620 | break; |
| 621 | case 1: |
| 622 | op = op_vstem3; |
| 623 | break; |
| 624 | case 2: |
| 625 | op = op_hstem3; |
| 626 | break; |
| 627 | case 6: |
| 628 | op = op_seac; |
| 629 | break; |
| 630 | case 7: |
| 631 | op = op_sbw; |
| 632 | break; |
| 633 | case 12: |
| 634 | op = op_div; |
| 635 | break; |
| 636 | case 16: |
| 637 | op = op_callothersubr; |
| 638 | break; |
| 639 | case 17: |
| 640 | op = op_pop; |
| 641 | break; |
| 642 | case 33: |
| 643 | op = op_setcurrentpoint; |
| 644 | break; |
| 645 | |
| 646 | default: |
| 647 | FT_ERROR(( "T1_Parse_CharStrings: invalid escape (12+%d)\n", |
| 648 | ip[-1] )); |
| 649 | goto Syntax_Error; |
| 650 | } |
| 651 | break; |
| 652 | |
| 653 | case 255: /* four bytes integer */ |
| 654 | if ( ip + 4 > limit ) |
| 655 | { |
| 656 | FT_ERROR(( "T1_Parse_CharStrings: unexpected EOF in integer\n" )); |
| 657 | goto Syntax_Error; |
| 658 | } |
| 659 | |
| 660 | value = ( (FT_Long)ip[0] << 24 ) | |
| 661 | ( (FT_Long)ip[1] << 16 ) | |
| 662 | ( (FT_Long)ip[2] << 8 ) | |
| 663 | ip[3]; |
| 664 | ip += 4; |
| 665 | break; |
| 666 | |
| 667 | default: |
| 668 | if ( ip[-1] >= 32 ) |
| 669 | { |
| 670 | if ( ip[-1] < 247 ) |
| 671 | value = (FT_Long)ip[-1] - 139; |
| 672 | else |
| 673 | { |
| 674 | if ( ++ip > limit ) |
| 675 | { |
| 676 | FT_ERROR(( "T1_Parse_CharStrings:" )); |
| 677 | FT_ERROR(( " unexpected EOF in integer\n" )); |
| 678 | goto Syntax_Error; |
| 679 | } |
| 680 | |
| 681 | if ( ip[-2] < 251 ) |
| 682 | value = ((FT_Long)( ip[-2] - 247 ) << 8 ) + ip[-1] + 108; |
| 683 | else |
| 684 | value = -( ( ( (FT_Long)ip[-2] - 251 ) << 8 ) + ip[-1] + 108 ); |
| 685 | } |
| 686 | } |
| 687 | else |
| 688 | { |
| 689 | FT_ERROR(( "T1_Parse_CharStrings: invalid byte (%d)\n", |
| 690 | ip[-1] )); |
| 691 | goto Syntax_Error; |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | /* push value if necessary */ |
| 696 | if ( op == op_none ) |
| 697 | { |
| 698 | if ( top - decoder->stack >= T1_MAX_CHARSTRINGS_OPERANDS ) |
| 699 | { |
| 700 | FT_ERROR(( "T1_Parse_CharStrings: stack overflow!\n" )); |
| 701 | goto Syntax_Error; |
| 702 | } |
| 703 | |
| 704 | *top++ = value; |
| 705 | decoder->top = top; |
| 706 | } |
| 707 | |
| 708 | else if ( op == op_callothersubr ) /* check arguments differently */ |
| 709 | { |
| 710 | if ( top - decoder->stack < 2 ) |
| 711 | goto Stack_Underflow; |
| 712 | |
| 713 | top -= 2; |
| 714 | |
| 715 | switch ( top[1] ) |
| 716 | { |
| 717 | case 1: /* start flex feature */ |
| 718 | if ( top[0] != 0 ) |
| 719 | goto Unexpected_OtherSubr; |
| 720 | |
| 721 | decoder->flex_state = 1; |
| 722 | decoder->num_flex_vectors = 0; |
| 723 | decoder->flex_vectors[0].x = 0; |
| 724 | decoder->flex_vectors[0].y = 0; |
| 725 | break; |
| 726 | |
| 727 | case 2: /* add flex vector */ |
| 728 | { |
| 729 | FT_Int index; |
| 730 | FT_Vector* flex; |
| 731 | |
| 732 | |
| 733 | if ( top[0] != 0 ) |
| 734 | goto Unexpected_OtherSubr; |
| 735 | |
| 736 | top -= 2; |
| 737 | if ( top < decoder->stack ) |
| 738 | goto Stack_Underflow; |
| 739 | |
| 740 | index = decoder->num_flex_vectors++; |
| 741 | if ( index >= 7 ) |
| 742 | { |
| 743 | FT_ERROR(( "T1_Parse_CharStrings: too many flex vectors!\n" )); |
| 744 | goto Syntax_Error; |
| 745 | } |
| 746 | |
| 747 | flex = decoder->flex_vectors + index; |
| 748 | flex->x += top[0]; |
| 749 | flex->y += top[1]; |
| 750 | } |
| 751 | break; |
| 752 | |
| 753 | case 0: /* end flex feature */ |
| 754 | if ( decoder->flex_state == 0 || |
| 755 | decoder->num_flex_vectors != 7 ) |
| 756 | { |
| 757 | FT_ERROR(( "T1_Parse_CharStrings: unexpected flex end\n" )); |
| 758 | goto Syntax_Error; |
| 759 | } |
| 760 | |
| 761 | if ( top[0] != 3 ) |
| 762 | goto Unexpected_OtherSubr; |
| 763 | |
| 764 | top -= 3; |
| 765 | if ( top < decoder->stack ) |
| 766 | goto Stack_Underflow; |
| 767 | |
| 768 | /* now consume the remaining `pop pop setcurrentpoint' */ |
| 769 | if ( ip + 6 > limit || |
| 770 | ip[0] != 12 || ip[1] != 17 || /* pop */ |
| 771 | ip[2] != 12 || ip[3] != 17 || /* pop */ |
| 772 | ip[4] != 12 || ip[5] != 33 ) /* setcurrentpoint */ |
| 773 | { |
| 774 | FT_ERROR(( "T1_Parse_CharStrings: invalid flex charstring\n" )); |
| 775 | goto Syntax_Error; |
| 776 | } |
| 777 | |
| 778 | decoder->flex_state = 0; |
| 779 | decoder->top = top; |
| 780 | |
| 781 | error = t1operator_flex( decoder, top[0], top[1], top[2] ); |
| 782 | break; |
| 783 | |
| 784 | case 3: /* change hints */ |
| 785 | if ( top[0] != 1 ) |
| 786 | goto Unexpected_OtherSubr; |
| 787 | |
| 788 | /* eat the following `pop' */ |
| 789 | if ( ip + 2 > limit ) |
| 790 | { |
| 791 | FT_ERROR(( "T1_Parse_CharStrings: invalid escape (12+%d)\n", |
| 792 | ip[-1] )); |
| 793 | goto Syntax_Error; |
| 794 | } |
| 795 | |
| 796 | if ( ip[0] != 12 || ip[1] != 17 ) |
| 797 | { |
| 798 | FT_ERROR(( "T1_Parse_CharStrings:" )); |
| 799 | FT_ERROR(( " `pop' expected, found (%d %d)\n", ip[0], ip[1] )); |
| 800 | goto Syntax_Error; |
| 801 | } |
| 802 | |
| 803 | ip += 2; |
| 804 | |
| 805 | error = hints->change_hints( builder ); |
| 806 | break; |
| 807 | |
| 808 | default: |
| 809 | /* invalid OtherSubrs call */ |
| 810 | Unexpected_OtherSubr: |
| 811 | FT_ERROR(( "T1_Parse_CharStrings: unexpected OtherSubrs [%d %d]\n", |
| 812 | top[0], top[1] )); |
| 813 | goto Syntax_Error; |
| 814 | } |
| 815 | decoder->top = top; |
| 816 | } |
| 817 | else |
| 818 | { |
| 819 | FT_Int num_args = args_count[op]; |
| 820 | |
| 821 | |
| 822 | if ( top - decoder->stack < num_args ) |
| 823 | goto Stack_Underflow; |
| 824 | |
| 825 | top -= num_args; |
| 826 | |
| 827 | switch ( op ) |
| 828 | { |
| 829 | case op_endchar: |
| 830 | error = builds->end_char( builder ); |
| 831 | break; |
| 832 | |
| 833 | case op_hsbw: |
| 834 | error = builds->set_bearing_point( builder, top[0], 0, |
| 835 | top[1], 0 ); |
| 836 | break; |
| 837 | |
| 838 | case op_seac: |
| 839 | /* return immediately after the processing */ |
| 840 | return t1operator_seac( decoder, top[0], top[1], |
| 841 | top[2], top[3], top[4] ); |
| 842 | |
| 843 | case op_sbw: |
| 844 | error = builds->set_bearing_point( builder, top[0], top[1], |
| 845 | top[2], top[3] ); |
| 846 | break; |
| 847 | |
| 848 | case op_closepath: |
| 849 | error = builds->close_path( builder ); |
| 850 | break; |
| 851 | |
| 852 | case op_hlineto: |
| 853 | error = builds->rline_to( builder, top[0], 0 ); |
| 854 | break; |
| 855 | |
| 856 | case op_hmoveto: |
| 857 | error = builds->rmove_to( builder, top[0], 0 ); |
| 858 | break; |
| 859 | |
| 860 | case op_hvcurveto: |
| 861 | error = builds->rcurve_to( builder, top[0], 0, |
| 862 | top[1], top[2], |
| 863 | 0, top[3] ); |
| 864 | break; |
| 865 | |
| 866 | case op_rlineto: |
| 867 | error = builds->rline_to( builder, top[0], top[1] ); |
| 868 | break; |
| 869 | |
| 870 | case op_rmoveto: |
| 871 | /* ignore operator when in flex mode */ |
| 872 | if ( decoder->flex_state == 0 ) |
| 873 | error = builds->rmove_to( builder, top[0], top[1] ); |
| 874 | else |
| 875 | top += 2; |
| 876 | break; |
| 877 | |
| 878 | case op_rrcurveto: |
| 879 | error = builds->rcurve_to( builder, top[0], top[1], |
| 880 | top[2], top[3], |
| 881 | top[4], top[5] ); |
| 882 | break; |
| 883 | |
| 884 | case op_vhcurveto: |
| 885 | error = builds->rcurve_to( builder, 0, top[0], |
| 886 | top[1], top[2], |
| 887 | top[3], 0 ); |
| 888 | break; |
| 889 | |
| 890 | case op_vlineto: |
| 891 | error = builds->rline_to( builder, 0, top[0] ); |
| 892 | break; |
| 893 | |
| 894 | case op_vmoveto: |
| 895 | error = builds->rmove_to( builder, 0, top[0] ); |
| 896 | break; |
| 897 | |
| 898 | case op_dotsection: |
| 899 | error = hints->dot_section( builder ); |
| 900 | break; |
| 901 | |
| 902 | case op_hstem: |
| 903 | error = hints->stem( builder, top[0], top[1], 0 ); |
| 904 | break; |
| 905 | |
| 906 | case op_hstem3: |
| 907 | error = hints->stem3( builder, top[0], top[1], top[2], |
| 908 | top[3], top[4], top[5], 0 ); |
| 909 | break; |
| 910 | |
| 911 | case op_vstem: |
| 912 | error = hints->stem( builder, top[0], top[1], 1 ); |
| 913 | break; |
| 914 | |
| 915 | case op_vstem3: |
| 916 | error = hints->stem3( builder, top[0], top[1], top[2], |
| 917 | top[3], top[4], top[5], 1 ); |
| 918 | break; |
| 919 | |
| 920 | case op_div: |
| 921 | if ( top[1] ) |
| 922 | { |
| 923 | *top = top[0] / top[1]; |
| 924 | ++top; |
| 925 | } |
| 926 | else |
| 927 | { |
| 928 | FT_ERROR(( "T1_Parse_CHarStrings: division by 0\n" )); |
| 929 | goto Syntax_Error; |
| 930 | } |
| 931 | break; |
| 932 | |
| 933 | case op_callsubr: |
| 934 | { |
| 935 | FT_Int index = top[0]; |
| 936 | |
| 937 | |
| 938 | if ( index < 0 || index >= num_subrs ) |
| 939 | { |
| 940 | FT_ERROR(( "T1_Parse_CharStrings: invalid subrs index\n" )); |
| 941 | goto Syntax_Error; |
| 942 | } |
| 943 | |
| 944 | if ( zone - decoder->zones >= T1_MAX_SUBRS_CALLS ) |
| 945 | { |
| 946 | FT_ERROR(( "T1_Parse_CharStrings: too many nested subrs\n" )); |
| 947 | goto Syntax_Error; |
| 948 | } |
| 949 | |
| 950 | zone->cursor = ip; /* save current instruction pointer */ |
| 951 | |
| 952 | zone++; |
| 953 | zone->base = subrs_base[index]; |
| 954 | zone->limit = zone->base + subrs_len[index]; |
| 955 | zone->cursor = zone->base; |
| 956 | |
| 957 | if ( !zone->base ) |
| 958 | { |
| 959 | FT_ERROR(( "T1_Parse_CharStrings: invoking empty subrs!\n" )); |
| 960 | goto Syntax_Error; |
| 961 | } |
| 962 | |
| 963 | decoder->zone = zone; |
| 964 | ip = zone->base; |
| 965 | limit = zone->limit; |
| 966 | } |
| 967 | break; |
| 968 | |
| 969 | case op_pop: |
| 970 | FT_ERROR(( "T1_Parse_CharStrings: unexpected POP\n" )); |
| 971 | goto Syntax_Error; |
| 972 | |
| 973 | case op_return: |
| 974 | if ( zone <= decoder->zones ) |
| 975 | { |
| 976 | FT_ERROR(( "T1_Parse_CharStrings: unexpected return\n" )); |
| 977 | goto Syntax_Error; |
| 978 | } |
| 979 | |
| 980 | zone--; |
| 981 | ip = zone->cursor; |
| 982 | limit = zone->limit; |
| 983 | decoder->zone = zone; |
| 984 | break; |
| 985 | |
| 986 | case op_setcurrentpoint: |
| 987 | FT_ERROR(( "T1_Parse_CharStrings:" )); |
| 988 | FT_ERROR(( " unexpected `setcurrentpoint'\n" )); |
| 989 | goto Syntax_Error; |
| 990 | break; |
| 991 | |
| 992 | default: |
| 993 | FT_ERROR(( "T1_Parse_CharStrings: unhandled opcode %d\n", op )); |
| 994 | goto Syntax_Error; |
| 995 | } |
| 996 | |
| 997 | decoder->top = top; |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | return error; |
| 1002 | |
| 1003 | Syntax_Error: |
| 1004 | return T1_Err_Syntax_Error; |
| 1005 | |
| 1006 | Stack_Underflow: |
| 1007 | return T1_Err_Stack_Underflow; |
| 1008 | } |
| 1009 | |
| 1010 | |
| 1011 | /*************************************************************************/ |
| 1012 | /* */ |
| 1013 | /* <Function> */ |
| 1014 | /* T1_Add_Points */ |
| 1015 | /* */ |
| 1016 | /* <Description> */ |
| 1017 | /* Checks that there is enough room in the current load glyph outline */ |
| 1018 | /* to accept `num_points' additional outline points. If not, this */ |
| 1019 | /* function grows the load outline's arrays accordingly. */ |
| 1020 | /* */ |
| 1021 | /* <Input> */ |
| 1022 | /* builder :: A pointer to the glyph builder object. */ |
| 1023 | /* */ |
| 1024 | /* num_points :: The number of points that will be added later. */ |
| 1025 | /* */ |
| 1026 | /* <Return> */ |
| 1027 | /* FreeType error code. 0 means success. */ |
| 1028 | /* */ |
| 1029 | /* <Note> */ |
| 1030 | /* This function does NOT update the points count in the glyph */ |
| 1031 | /* builder. This must be done by the caller itself, after this */ |
| 1032 | /* function has been invoked. */ |
| 1033 | /* */ |
| 1034 | LOCAL_FUNC |
| 1035 | FT_Error T1_Add_Points( T1_Builder* builder, |
| 1036 | FT_Int num_points ) |
| 1037 | { |
| 1038 | return FT_GlyphLoader_Check_Points( builder->loader, num_points, 0 ); |
| 1039 | } |
| 1040 | |
| 1041 | |
| 1042 | /*************************************************************************/ |
| 1043 | /* */ |
| 1044 | /* <Function> */ |
| 1045 | /* T1_Add_Contours */ |
| 1046 | /* */ |
| 1047 | /* <Description> */ |
| 1048 | /* Checks that there is enough room in the current load glyph outline */ |
| 1049 | /* to accept `num_contours' additional contours. If not, this */ |
| 1050 | /* function grows the load outline's arrays accordingly. */ |
| 1051 | /* */ |
| 1052 | /* <Input> */ |
| 1053 | /* builder :: A pointer to the glyph builder object. */ |
| 1054 | /* */ |
| 1055 | /* num_contours :: The number of contours that will be added later. */ |
| 1056 | /* */ |
| 1057 | /* <Return> */ |
| 1058 | /* FreeType error code. 0 means success. */ |
| 1059 | /* */ |
| 1060 | /* <Note> */ |
| 1061 | /* This function does NOT update the contours count in the load glyph */ |
| 1062 | /* This must be done by the caller itself, after this function is */ |
| 1063 | /* invoked. */ |
| 1064 | /* */ |
| 1065 | LOCAL_FUNC |
| 1066 | FT_Error T1_Add_Contours( T1_Builder* builder, |
| 1067 | FT_Int num_contours ) |
| 1068 | { |
| 1069 | return FT_GlyphLoader_Check_Points( builder->loader, 0, num_contours ); |
| 1070 | } |
| 1071 | |
| 1072 | |
| 1073 | /*************************************************************************/ |
| 1074 | /*************************************************************************/ |
| 1075 | /*************************************************************************/ |
| 1076 | /********** *********/ |
| 1077 | /********** COMPUTE THE MAXIMUM ADVANCE WIDTH *********/ |
| 1078 | /********** *********/ |
| 1079 | /********** The following code is in charge of computing *********/ |
| 1080 | /********** the maximum advance width of the font. It *********/ |
| 1081 | /********** quickly processes each glyph charstring to *********/ |
| 1082 | /********** extract the value from either a `sbw' or `seac' *********/ |
| 1083 | /********** operator. *********/ |
| 1084 | /********** *********/ |
| 1085 | /*************************************************************************/ |
| 1086 | /*************************************************************************/ |
| 1087 | /*************************************************************************/ |
| 1088 | |
| 1089 | |
| 1090 | static |
| 1091 | FT_Error maxadv_sbw( T1_Decoder* decoder, |
| 1092 | FT_Pos sbx, |
| 1093 | FT_Pos sby, |
| 1094 | FT_Pos wx, |
| 1095 | FT_Pos wy ) |
| 1096 | { |
| 1097 | FT_UNUSED( sbx ); |
| 1098 | FT_UNUSED( sby ); |
| 1099 | FT_UNUSED( wy ); |
| 1100 | |
| 1101 | if ( wx > decoder->builder.advance.x ) |
| 1102 | decoder->builder.advance.x = wx; |
| 1103 | |
| 1104 | return -1; /* return an error code to exit the Type 1 parser */ |
| 1105 | /* immediately. */ |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | static |
| 1110 | FT_Int maxadv_error( void ) |
| 1111 | { |
| 1112 | /* we should never reach this code, unless with a buggy font */ |
| 1113 | return -2; |
| 1114 | } |
| 1115 | |
| 1116 | |
| 1117 | /* the maxadv_gbuilder_interface is used when computing the maximum */ |
| 1118 | /* advance width of all glyphs in a given font. We only process the */ |
| 1119 | /* `sbw' operator here, and return an error for all others. */ |
| 1120 | |
| 1121 | /* Note that `seac' is processed by the T1_Decoder. */ |
| 1122 | static |
| 1123 | const T1_Builder_Funcs maxadv_builder_interface = |
| 1124 | { |
| 1125 | (T1_Builder_EndChar) maxadv_error, |
| 1126 | (T1_Builder_Sbw) maxadv_sbw, |
| 1127 | (T1_Builder_ClosePath)maxadv_error, |
| 1128 | (T1_Builder_RLineTo) maxadv_error, |
| 1129 | (T1_Builder_RMoveTo) maxadv_error, |
| 1130 | (T1_Builder_RCurveTo) maxadv_error |
| 1131 | }; |
| 1132 | |
| 1133 | |
| 1134 | /* the maxadv_hinter_interface always return an error. */ |
| 1135 | static |
| 1136 | const T1_Hinter_Funcs maxadv_hinter_interface = |
| 1137 | { |
| 1138 | (T1_Hinter_DotSection) maxadv_error, |
| 1139 | (T1_Hinter_ChangeHints)maxadv_error, |
| 1140 | (T1_Hinter_Stem) maxadv_error, |
| 1141 | (T1_Hinter_Stem3) maxadv_error, |
| 1142 | }; |
| 1143 | |
| 1144 | |
| 1145 | LOCAL_FUNC |
| 1146 | FT_Error T1_Compute_Max_Advance( T1_Face face, |
| 1147 | FT_Int* max_advance ) |
| 1148 | { |
| 1149 | FT_Error error; |
| 1150 | T1_Decoder decoder; |
| 1151 | FT_Int glyph_index; |
| 1152 | T1_Font* type1 = &face->type1; |
| 1153 | |
| 1154 | |
| 1155 | *max_advance = 0; |
| 1156 | |
| 1157 | /* Initialize load decoder */ |
| 1158 | T1_Init_Decoder( &decoder, &maxadv_hinter_interface ); |
| 1159 | |
| 1160 | T1_Init_Builder( &decoder.builder, face, 0, 0, |
| 1161 | &maxadv_builder_interface ); |
| 1162 | |
| 1163 | /* For each glyph, parse the glyph charstring and extract */ |
| 1164 | /* the advance width. */ |
| 1165 | for ( glyph_index = 0; glyph_index < type1->num_glyphs; glyph_index++ ) |
| 1166 | { |
| 1167 | /* now get load the unscaled outline */ |
| 1168 | error = T1_Parse_CharStrings( &decoder, |
| 1169 | type1->charstrings [glyph_index], |
| 1170 | type1->charstrings_len[glyph_index], |
| 1171 | type1->num_subrs, |
| 1172 | type1->subrs, |
| 1173 | type1->subrs_len ); |
| 1174 | /* ignore the error if one occured - skip to next glyph */ |
| 1175 | } |
| 1176 | |
| 1177 | *max_advance = decoder.builder.advance.x; |
| 1178 | return T1_Err_Ok; |
| 1179 | } |
| 1180 | |
| 1181 | |
| 1182 | /*************************************************************************/ |
| 1183 | /*************************************************************************/ |
| 1184 | /*************************************************************************/ |
| 1185 | /********** *********/ |
| 1186 | /********** UNHINTED GLYPH LOADER *********/ |
| 1187 | /********** *********/ |
| 1188 | /********** The following code is in charge of loading a *********/ |
| 1189 | /********** single outline. It completely ignores hinting *********/ |
| 1190 | /********** and is used when FT_LOAD_NO_HINTING is set. *********/ |
| 1191 | /********** *********/ |
| 1192 | /********** The Type 1 hinter is located in `t1hint.c' *********/ |
| 1193 | /********** *********/ |
| 1194 | /*************************************************************************/ |
| 1195 | /*************************************************************************/ |
| 1196 | /*************************************************************************/ |
| 1197 | |
| 1198 | |
| 1199 | static |
| 1200 | FT_Error close_open_path( T1_Builder* builder ) |
| 1201 | { |
| 1202 | FT_Error error; |
| 1203 | FT_Outline* cur = builder->current; |
| 1204 | FT_Int num_points; |
| 1205 | FT_Int first_point; |
| 1206 | |
| 1207 | |
| 1208 | /* Some fonts, like Hershey, are made of `open paths' which are */ |
| 1209 | /* now managed directly by FreeType. In this case, it is necessary */ |
| 1210 | /* to close the path by duplicating its points in reverse order, */ |
| 1211 | /* which is precisely the purpose of this function. */ |
| 1212 | |
| 1213 | /* first compute the number of points to duplicate */ |
| 1214 | if ( cur->n_contours > 1 ) |
| 1215 | first_point = cur->contours[cur->n_contours - 2] + 1; |
| 1216 | else |
| 1217 | first_point = 0; |
| 1218 | |
| 1219 | num_points = cur->n_points - first_point - 2; |
| 1220 | if ( num_points > 0 ) |
| 1221 | { |
| 1222 | FT_Vector* source_point; |
| 1223 | char* source_tags; |
| 1224 | FT_Vector* point; |
| 1225 | char* tags; |
| 1226 | |
| 1227 | |
| 1228 | error = T1_Add_Points( builder, num_points ); |
| 1229 | if ( error ) |
| 1230 | return error; |
| 1231 | |
| 1232 | point = cur->points + cur->n_points; |
| 1233 | tags = cur->tags + cur->n_points; |
| 1234 | |
| 1235 | source_point = point - 2; |
| 1236 | source_tags = tags - 2; |
| 1237 | |
| 1238 | cur->n_points += num_points; |
| 1239 | |
| 1240 | if ( builder->load_points ) |
| 1241 | do |
| 1242 | { |
| 1243 | *point++ = *source_point--; |
| 1244 | *tags++ = *source_tags--; |
| 1245 | num_points--; |
| 1246 | |
| 1247 | } while ( num_points > 0 ); |
| 1248 | } |
| 1249 | |
| 1250 | builder->path_begun = 0; |
| 1251 | return T1_Err_Ok; |
| 1252 | } |
| 1253 | |
| 1254 | |
| 1255 | static |
| 1256 | FT_Error gload_closepath( T1_Builder* builder ) |
| 1257 | { |
| 1258 | FT_Outline* cur = builder->current; |
| 1259 | |
| 1260 | |
| 1261 | /* XXXX: We must not include the last point in the path if it */ |
| 1262 | /* is located on the first point. */ |
| 1263 | if ( cur->n_points > 1 ) |
| 1264 | { |
| 1265 | FT_Int first = 0; |
| 1266 | FT_Vector* p1 = cur->points + first; |
| 1267 | FT_Vector* p2 = cur->points + cur->n_points - 1; |
| 1268 | |
| 1269 | |
| 1270 | if ( cur->n_contours > 1 ) |
| 1271 | { |
| 1272 | first = cur->contours[cur->n_contours - 2] + 1; |
| 1273 | p1 = cur->points + first; |
| 1274 | } |
| 1275 | |
| 1276 | if ( p1->x == p2->x && p1->y == p2->y ) |
| 1277 | cur->n_points--; |
| 1278 | } |
| 1279 | |
| 1280 | /* save current contour, if any */ |
| 1281 | if ( cur->n_contours > 0 ) |
| 1282 | cur->contours[cur->n_contours - 1] = cur->n_points - 1; |
| 1283 | |
| 1284 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 1285 | /* hint last points if necessary -- this is not strictly required */ |
| 1286 | /* there, but it helps for debugging, and doesn't affect performance */ |
| 1287 | if ( builder->pass == 1 ) |
| 1288 | T1_Hint_Points( builder ); |
| 1289 | #endif |
| 1290 | |
| 1291 | builder->path_begun = 0; |
| 1292 | return T1_Err_Ok; |
| 1293 | } |
| 1294 | |
| 1295 | |
| 1296 | static |
| 1297 | FT_Error gload_endchar( T1_Builder* builder ) |
| 1298 | { |
| 1299 | FT_Error error; |
| 1300 | |
| 1301 | |
| 1302 | /* close path if needed */ |
| 1303 | if ( builder->path_begun ) |
| 1304 | { |
| 1305 | error = close_open_path( builder ); |
| 1306 | if ( error ) |
| 1307 | return error; |
| 1308 | } |
| 1309 | |
| 1310 | error = gload_closepath( builder ); |
| 1311 | |
| 1312 | FT_GlyphLoader_Add( builder->loader ); |
| 1313 | |
| 1314 | return error; |
| 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | static |
| 1319 | FT_Error gload_sbw( T1_Builder* builder, |
| 1320 | FT_Pos sbx, |
| 1321 | FT_Pos sby, |
| 1322 | FT_Pos wx, |
| 1323 | FT_Pos wy ) |
| 1324 | { |
| 1325 | builder->left_bearing.x += sbx; |
| 1326 | builder->left_bearing.y += sby; |
| 1327 | builder->advance.x = wx; |
| 1328 | builder->advance.y = wy; |
| 1329 | |
| 1330 | builder->last.x = sbx; |
| 1331 | builder->last.y = sby; |
| 1332 | |
| 1333 | return 0; |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | static |
| 1338 | FT_Error gload_rlineto( T1_Builder* builder, |
| 1339 | FT_Pos dx, |
| 1340 | FT_Pos dy ) |
| 1341 | { |
| 1342 | FT_Error error; |
| 1343 | FT_Outline* cur = builder->current; |
| 1344 | FT_Vector vec; |
| 1345 | |
| 1346 | |
| 1347 | /* grow buffer if necessary */ |
| 1348 | error = T1_Add_Points( builder, 1 ); |
| 1349 | if ( error ) |
| 1350 | return error; |
| 1351 | |
| 1352 | if ( builder->load_points ) |
| 1353 | { |
| 1354 | /* save point */ |
| 1355 | vec.x = builder->last.x + dx; |
| 1356 | vec.y = builder->last.y + dy; |
| 1357 | |
| 1358 | cur->points[cur->n_points] = vec; |
| 1359 | cur->tags [cur->n_points] = FT_Curve_Tag_On; |
| 1360 | |
| 1361 | builder->last = vec; |
| 1362 | } |
| 1363 | cur->n_points++; |
| 1364 | |
| 1365 | builder->path_begun = 1; |
| 1366 | |
| 1367 | return T1_Err_Ok; |
| 1368 | } |
| 1369 | |
| 1370 | |
| 1371 | static |
| 1372 | FT_Error gload_rmoveto( T1_Builder* builder, |
| 1373 | FT_Pos dx, |
| 1374 | FT_Pos dy ) |
| 1375 | { |
| 1376 | FT_Error error; |
| 1377 | FT_Outline* cur = builder->current; |
| 1378 | FT_Vector vec; |
| 1379 | |
| 1380 | |
| 1381 | /* in the case where `path_begun' is set, we have an `rmoveto' */ |
| 1382 | /* after some normal path definition. If the face's paint type */ |
| 1383 | /* is set to 1, this means that we have an `open path', also */ |
| 1384 | /* called a `stroke'. The FreeType raster doesn't support */ |
| 1385 | /* opened paths, so we'll close it explicitely there. */ |
| 1386 | |
| 1387 | if ( builder->path_begun && builder->face->type1.paint_type == 1 ) |
| 1388 | { |
| 1389 | if ( builder->face->type1.paint_type == 1 ) |
| 1390 | { |
| 1391 | error = close_open_path( builder ); |
| 1392 | if ( error ) |
| 1393 | return error; |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | /* grow buffer if necessary */ |
| 1398 | error = T1_Add_Contours( builder, 1 ) || |
| 1399 | T1_Add_Points ( builder, 1 ); |
| 1400 | if ( error ) |
| 1401 | return error; |
| 1402 | |
| 1403 | /* save current contour, if any */ |
| 1404 | if ( cur->n_contours > 0 ) |
| 1405 | cur->contours[cur->n_contours - 1] = cur->n_points - 1; |
| 1406 | |
| 1407 | if ( builder->load_points ) |
| 1408 | { |
| 1409 | /* save point */ |
| 1410 | vec.x = builder->last.x + dx; |
| 1411 | vec.y = builder->last.y + dy; |
| 1412 | cur->points[cur->n_points] = vec; |
| 1413 | cur->tags [cur->n_points] = FT_Curve_Tag_On; |
| 1414 | |
| 1415 | builder->last = vec; |
| 1416 | } |
| 1417 | |
| 1418 | cur->n_contours++; |
| 1419 | cur->n_points++; |
| 1420 | |
| 1421 | return T1_Err_Ok; |
| 1422 | } |
| 1423 | |
| 1424 | |
| 1425 | static |
| 1426 | FT_Error gload_rrcurveto( T1_Builder* builder, |
| 1427 | FT_Pos dx1, |
| 1428 | FT_Pos dy1, |
| 1429 | FT_Pos dx2, |
| 1430 | FT_Pos dy2, |
| 1431 | FT_Pos dx3, |
| 1432 | FT_Pos dy3 ) |
| 1433 | { |
| 1434 | FT_Error error; |
| 1435 | FT_Outline* cur = builder->current; |
| 1436 | FT_Vector vec; |
| 1437 | FT_Vector* points; |
| 1438 | char* tags; |
| 1439 | |
| 1440 | |
| 1441 | /* grow buffer if necessary */ |
| 1442 | error = T1_Add_Points( builder, 3 ); |
| 1443 | if ( error ) |
| 1444 | return error; |
| 1445 | |
| 1446 | if ( builder->load_points ) |
| 1447 | { |
| 1448 | /* save point */ |
| 1449 | points = cur->points + cur->n_points; |
| 1450 | tags = cur->tags + cur->n_points; |
| 1451 | |
| 1452 | vec.x = builder->last.x + dx1; |
| 1453 | vec.y = builder->last.y + dy1; |
| 1454 | points[0] = vec; |
| 1455 | tags[0] = FT_Curve_Tag_Cubic; |
| 1456 | |
| 1457 | vec.x += dx2; |
| 1458 | vec.y += dy2; |
| 1459 | points[1] = vec; |
| 1460 | tags[1] = FT_Curve_Tag_Cubic; |
| 1461 | |
| 1462 | vec.x += dx3; |
| 1463 | vec.y += dy3; |
| 1464 | points[2] = vec; |
| 1465 | tags[2] = FT_Curve_Tag_On; |
| 1466 | |
| 1467 | builder->last = vec; |
| 1468 | } |
| 1469 | |
| 1470 | cur->n_points += 3; |
| 1471 | builder->path_begun = 1; |
| 1472 | |
| 1473 | return T1_Err_Ok; |
| 1474 | } |
| 1475 | |
| 1476 | |
| 1477 | static |
| 1478 | FT_Error gload_ignore( void ) |
| 1479 | { |
| 1480 | return 0; |
| 1481 | } |
| 1482 | |
| 1483 | |
| 1484 | static |
| 1485 | const T1_Builder_Funcs gload_builder_interface = |
| 1486 | { |
| 1487 | gload_endchar, |
| 1488 | gload_sbw, |
| 1489 | gload_closepath, |
| 1490 | gload_rlineto, |
| 1491 | gload_rmoveto, |
| 1492 | gload_rrcurveto |
| 1493 | }; |
| 1494 | |
| 1495 | |
| 1496 | static |
| 1497 | const T1_Builder_Funcs gload_builder_interface_null = |
| 1498 | { |
| 1499 | (T1_Builder_EndChar) gload_ignore, |
| 1500 | (T1_Builder_Sbw) gload_sbw, /* record left bearing */ |
| 1501 | (T1_Builder_ClosePath)gload_ignore, |
| 1502 | (T1_Builder_RLineTo) gload_ignore, |
| 1503 | (T1_Builder_RMoveTo) gload_ignore, |
| 1504 | (T1_Builder_RCurveTo) gload_ignore |
| 1505 | }; |
| 1506 | |
| 1507 | |
| 1508 | static |
| 1509 | const T1_Hinter_Funcs gload_hinter_interface = |
| 1510 | { |
| 1511 | (T1_Hinter_DotSection) gload_ignore, /* dotsection */ |
| 1512 | (T1_Hinter_ChangeHints)gload_ignore, /* changehints */ |
| 1513 | (T1_Hinter_Stem) gload_ignore, /* hstem & vstem */ |
| 1514 | (T1_Hinter_Stem3) gload_ignore, /* hstem3 & vestem3 */ |
| 1515 | }; |
| 1516 | |
| 1517 | |
| 1518 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 1519 | |
| 1520 | |
| 1521 | /*************************************************************************/ |
| 1522 | /* */ |
| 1523 | /* Hinter overview: */ |
| 1524 | /* */ |
| 1525 | /* This is a two-pass hinter. On the first pass, the hints are all */ |
| 1526 | /* recorded by the hinter, and no point is loaded in the outline. */ |
| 1527 | /* */ |
| 1528 | /* When the first pass is finished, all stems hints are grid-fitted */ |
| 1529 | /* at once. */ |
| 1530 | /* */ |
| 1531 | /* Then, a second pass is performed to load the outline points as */ |
| 1532 | /* well as hint/scale them correctly. */ |
| 1533 | /* */ |
| 1534 | /*************************************************************************/ |
| 1535 | |
| 1536 | |
| 1537 | static |
| 1538 | FT_Error t1_load_hinted_glyph( T1_Decoder* decoder, |
| 1539 | FT_UInt glyph_index, |
| 1540 | FT_Bool recurse ) |
| 1541 | { |
| 1542 | T1_Builder* builder = &decoder->builder; |
| 1543 | T1_GlyphSlot glyph = builder->glyph; |
| 1544 | T1_Font* type1 = &builder->face->type1; |
| 1545 | FT_UInt old_points, old_contours; |
| 1546 | FT_GlyphLoader* loader = decoder->builder.loader; |
| 1547 | FT_Error error; |
| 1548 | |
| 1549 | |
| 1550 | /* Pass 1 -- try to load first glyph, simply recording points */ |
| 1551 | old_points = loader->base.outline.n_points; |
| 1552 | old_contours = loader->base.outline.n_contours; |
| 1553 | |
| 1554 | FT_GlyphLoader_Prepare( decoder->builder.loader ); |
| 1555 | |
| 1556 | T1_Reset_Builder( builder, 0 ); |
| 1557 | |
| 1558 | builder->no_recurse = recurse; |
| 1559 | builder->pass = 0; |
| 1560 | glyph->hints->hori_stems.num_stems = 0; |
| 1561 | glyph->hints->vert_stems.num_stems = 0; |
| 1562 | |
| 1563 | error = T1_Parse_CharStrings( decoder, |
| 1564 | type1->charstrings [glyph_index], |
| 1565 | type1->charstrings_len[glyph_index], |
| 1566 | type1->num_subrs, |
| 1567 | type1->subrs, |
| 1568 | type1->subrs_len ); |
| 1569 | if ( error ) |
| 1570 | goto Exit; |
| 1571 | |
| 1572 | /* check for composite (i.e. `seac' operator) */ |
| 1573 | if ( glyph->root.format == ft_glyph_format_composite ) |
| 1574 | { |
| 1575 | /* this is a composite glyph, we must then load the first one, */ |
| 1576 | /* then load the second one on top of it and translate it by a */ |
| 1577 | /* fixed amount. */ |
| 1578 | FT_UInt n_base_points; |
| 1579 | FT_SubGlyph* subglyph = loader->base.subglyphs; |
| 1580 | T1_Size size = builder->size; |
| 1581 | FT_Pos dx, dy; |
| 1582 | FT_Vector left_bearing, advance; |
| 1583 | |
| 1584 | |
| 1585 | /* clean glyph format */ |
| 1586 | glyph->root.format = ft_glyph_format_none; |
| 1587 | |
| 1588 | /* First load `bchar' in builder */ |
| 1589 | builder->no_recurse = 0; |
| 1590 | error = t1_load_hinted_glyph( decoder, subglyph->index, 0 ); |
| 1591 | if ( error ) |
| 1592 | goto Exit; |
| 1593 | |
| 1594 | /* save the left bearing and width of the base character */ |
| 1595 | /* as they will be erased by the next load */ |
| 1596 | left_bearing = builder->left_bearing; |
| 1597 | advance = builder->advance; |
| 1598 | |
| 1599 | /* Then load `achar' in builder */ |
| 1600 | n_base_points = builder->base->n_points; |
| 1601 | subglyph++; |
| 1602 | error = t1_load_hinted_glyph( decoder, subglyph->index, 0 ); |
| 1603 | if ( error ) |
| 1604 | goto Exit; |
| 1605 | |
| 1606 | /* Finally, move the accent */ |
| 1607 | dx = FT_MulFix( subglyph->arg1, size->root.metrics.x_scale ); |
| 1608 | dy = FT_MulFix( subglyph->arg2, size->root.metrics.y_scale ); |
| 1609 | dx = ( dx + 32 ) & -64; |
| 1610 | dy = ( dy + 32 ) & -64; |
| 1611 | { |
| 1612 | FT_Outline dummy; |
| 1613 | |
| 1614 | |
| 1615 | dummy.n_points = loader->base.outline.n_points - n_base_points; |
| 1616 | dummy.points = loader->base.outline.points + n_base_points; |
| 1617 | |
| 1618 | FT_Outline_Translate( &dummy, dx, dy ); |
| 1619 | } |
| 1620 | |
| 1621 | /* restore the left side bearing and */ |
| 1622 | /* advance width of the base character */ |
| 1623 | builder->left_bearing = left_bearing; |
| 1624 | builder->advance = advance; |
| 1625 | } |
| 1626 | else |
| 1627 | { |
| 1628 | /* All right, pass 1 is finished, now grid-fit all stem hints */ |
| 1629 | T1_Hint_Stems( &decoder->builder ); |
| 1630 | |
| 1631 | /* undo the end-char */ |
| 1632 | builder->base->n_points = old_points; |
| 1633 | builder->base->n_contours = old_contours; |
| 1634 | |
| 1635 | /* Pass 2 -- record and scale/hint the points */ |
| 1636 | T1_Reset_Builder( builder, 0 ); |
| 1637 | |
| 1638 | builder->pass = 1; |
| 1639 | builder->no_recurse = 0; |
| 1640 | |
| 1641 | error = T1_Parse_CharStrings( decoder, |
| 1642 | type1->charstrings [glyph_index], |
| 1643 | type1->charstrings_len[glyph_index], |
| 1644 | type1->num_subrs, |
| 1645 | type1->subrs, |
| 1646 | type1->subrs_len ); |
| 1647 | } |
| 1648 | |
| 1649 | /* save new glyph tables */ |
| 1650 | if ( recurse ) |
| 1651 | T1_Done_Builder( builder ); |
| 1652 | |
| 1653 | Exit: |
| 1654 | return error; |
| 1655 | } |
| 1656 | |
| 1657 | |
| 1658 | #endif /* !T1_CONFIG_OPTION_DISABLE_HINTER */ |
| 1659 | |
| 1660 | |
| 1661 | LOCAL_FUNC |
| 1662 | FT_Error T1_Load_Glyph( T1_GlyphSlot glyph, |
| 1663 | T1_Size size, |
| 1664 | FT_Int glyph_index, |
| 1665 | FT_Int load_flags ) |
| 1666 | { |
| 1667 | FT_Error error; |
| 1668 | T1_Decoder decoder; |
| 1669 | T1_Face face = (T1_Face)glyph->root.face; |
| 1670 | FT_Bool hinting; |
| 1671 | T1_Font* type1 = &face->type1; |
| 1672 | |
| 1673 | |
| 1674 | if ( load_flags & FT_LOAD_NO_RECURSE ) |
| 1675 | load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; |
| 1676 | |
| 1677 | glyph->x_scale = size->root.metrics.x_scale; |
| 1678 | glyph->y_scale = size->root.metrics.y_scale; |
| 1679 | |
| 1680 | glyph->root.outline.n_points = 0; |
| 1681 | glyph->root.outline.n_contours = 0; |
| 1682 | |
| 1683 | glyph->root.format = ft_glyph_format_outline; /* by default */ |
| 1684 | |
| 1685 | hinting = 0; |
| 1686 | |
| 1687 | #ifndef T1_CONFIG_OPTION_DISABLE_HINTER |
| 1688 | |
| 1689 | hinting = ( load_flags & ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) == 0; |
| 1690 | |
| 1691 | if ( hinting ) |
| 1692 | { |
| 1693 | T1_Init_Decoder( &decoder, &t1_hinter_funcs ); |
| 1694 | T1_Init_Builder( &decoder.builder, face, size, glyph, |
| 1695 | &gload_builder_interface ); |
| 1696 | |
| 1697 | error = t1_load_hinted_glyph( &decoder, glyph_index, 1 ); |
| 1698 | } |
| 1699 | else |
| 1700 | |
| 1701 | #endif /* !T1_CONFIG_OPTION_DISABLE_HINTER */ |
| 1702 | |
| 1703 | { |
| 1704 | T1_Init_Decoder( &decoder, &gload_hinter_interface ); |
| 1705 | |
| 1706 | T1_Init_Builder( &decoder.builder, face, size, glyph, |
| 1707 | &gload_builder_interface ); |
| 1708 | |
| 1709 | decoder.builder.no_recurse = ( load_flags & FT_LOAD_NO_RECURSE ) != 0; |
| 1710 | |
| 1711 | /* now load the unscaled outline */ |
| 1712 | error = T1_Parse_CharStrings( &decoder, |
| 1713 | type1->charstrings [glyph_index], |
| 1714 | type1->charstrings_len[glyph_index], |
| 1715 | type1->num_subrs, |
| 1716 | type1->subrs, |
| 1717 | type1->subrs_len ); |
| 1718 | |
| 1719 | /* save new glyph tables */ |
| 1720 | T1_Done_Builder( &decoder.builder ); |
| 1721 | } |
| 1722 | |
| 1723 | /* Now, set the metrics -- this is rather simple, as */ |
| 1724 | /* the left side bearing is the xMin, and the top side */ |
| 1725 | /* bearing the yMax */ |
| 1726 | if ( !error ) |
| 1727 | { |
| 1728 | /* for composite glyphs, return only the left side bearing and the */ |
| 1729 | /* advance width */ |
| 1730 | if ( glyph->root.format == ft_glyph_format_composite ) |
| 1731 | { |
| 1732 | glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x; |
| 1733 | glyph->root.metrics.horiAdvance = decoder.builder.advance.x; |
| 1734 | } |
| 1735 | else |
| 1736 | { |
| 1737 | FT_BBox cbox; |
| 1738 | FT_Glyph_Metrics* metrics = &glyph->root.metrics; |
| 1739 | |
| 1740 | |
| 1741 | /* apply the font matrix */ |
| 1742 | FT_Outline_Transform( &glyph->root.outline, |
| 1743 | &face->type1.font_matrix ); |
| 1744 | |
| 1745 | FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); |
| 1746 | |
| 1747 | /* grid fit the bounding box if necessary */ |
| 1748 | if ( hinting ) |
| 1749 | { |
| 1750 | cbox.xMin &= -64; |
| 1751 | cbox.yMin &= -64; |
| 1752 | cbox.xMax = ( cbox.xMax + 63 ) & -64; |
| 1753 | cbox.yMax = ( cbox.yMax + 63 ) & -64; |
| 1754 | } |
| 1755 | |
| 1756 | metrics->width = cbox.xMax - cbox.xMin; |
| 1757 | metrics->height = cbox.yMax - cbox.yMin; |
| 1758 | |
| 1759 | metrics->horiBearingX = cbox.xMin; |
| 1760 | metrics->horiBearingY = cbox.yMax; |
| 1761 | |
| 1762 | /* copy the _unscaled_ advance width */ |
| 1763 | metrics->horiAdvance = decoder.builder.advance.x; |
| 1764 | |
| 1765 | /* make up vertical metrics */ |
| 1766 | metrics->vertBearingX = 0; |
| 1767 | metrics->vertBearingY = 0; |
| 1768 | metrics->vertAdvance = 0; |
| 1769 | |
| 1770 | glyph->root.format = ft_glyph_format_outline; |
| 1771 | |
| 1772 | glyph->root.outline.flags = 0; |
| 1773 | |
| 1774 | if ( size->root.metrics.y_ppem < 24 ) |
| 1775 | glyph->root.outline.flags |= ft_outline_high_precision; |
| 1776 | |
| 1777 | glyph->root.outline.flags |= ft_outline_reverse_fill; |
| 1778 | |
| 1779 | if ( hinting ) |
| 1780 | { |
| 1781 | /* adjust the advance width */ |
| 1782 | /* XXX TODO: consider stem hints grid-fit */ |
| 1783 | metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, |
| 1784 | glyph->x_scale ); |
| 1785 | } |
| 1786 | else if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) |
| 1787 | { |
| 1788 | /* scale the outline and the metrics */ |
| 1789 | FT_Int n; |
| 1790 | FT_Outline* cur = decoder.builder.base; |
| 1791 | FT_Vector* vec = cur->points; |
| 1792 | FT_Fixed x_scale = glyph->x_scale; |
| 1793 | FT_Fixed y_scale = glyph->y_scale; |
| 1794 | |
| 1795 | |
| 1796 | /* First of all, scale the points */ |
| 1797 | for ( n = cur->n_points; n > 0; n--, vec++ ) |
| 1798 | { |
| 1799 | vec->x = FT_MulFix( vec->x, x_scale ); |
| 1800 | vec->y = FT_MulFix( vec->y, y_scale ); |
| 1801 | } |
| 1802 | |
| 1803 | /* Then scale the metrics */ |
| 1804 | metrics->width = FT_MulFix( metrics->width, x_scale ); |
| 1805 | metrics->height = FT_MulFix( metrics->height, y_scale ); |
| 1806 | |
| 1807 | metrics->horiBearingX = FT_MulFix( metrics->horiBearingX, x_scale ); |
| 1808 | metrics->horiBearingY = FT_MulFix( metrics->horiBearingY, y_scale ); |
| 1809 | |
| 1810 | metrics->vertBearingX = FT_MulFix( metrics->vertBearingX, x_scale ); |
| 1811 | metrics->vertBearingY = FT_MulFix( metrics->vertBearingY, y_scale ); |
| 1812 | |
| 1813 | metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); |
| 1814 | metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); |
| 1815 | } |
| 1816 | } |
| 1817 | } |
| 1818 | |
| 1819 | return error; |
| 1820 | } |
| 1821 | |
| 1822 | |
| 1823 | /* END */ |