projects / reactos.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
* Sync up to trunk HEAD (r62502).
[reactos.git] / lib / 3rdparty / freetype / src / type42 / t42objs.c
1 /***************************************************************************/
2 /* */
3 /* t42objs.c */
4 /* */
5 /* Type 42 objects manager (body). */
6 /* */
7 /* Copyright 2002-2009, 2011, 2013 */
8 /* by Roberto Alameda. */
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 "t42objs.h"
20 #include "t42parse.h"
21 #include "t42error.h"
22 #include FT_INTERNAL_DEBUG_H
23 #include FT_LIST_H
24 #include FT_TRUETYPE_IDS_H
25
26
27 #undef FT_COMPONENT
28 #define FT_COMPONENT trace_t42
29
30
31 static FT_Error
32 T42_Open_Face( T42_Face face )
33 {
34 T42_LoaderRec loader;
35 T42_Parser parser;
36 T1_Font type1 = &face->type1;
37 FT_Memory memory = face->root.memory;
38 FT_Error error;
39
40 PSAux_Service psaux = (PSAux_Service)face->psaux;
41
42
43 t42_loader_init( &loader, face );
44
45 parser = &loader.parser;
46
47 if ( FT_ALLOC( face->ttf_data, 12 ) )
48 goto Exit;
49
50 error = t42_parser_init( parser,
51 face->root.stream,
52 memory,
53 psaux);
54 if ( error )
55 goto Exit;
56
57 error = t42_parse_dict( face, &loader,
58 parser->base_dict, parser->base_len );
59 if ( error )
60 goto Exit;
61
62 if ( type1->font_type != 42 )
63 {
64 FT_ERROR(( "T42_Open_Face: cannot handle FontType %d\n",
65 type1->font_type ));
66 error = FT_THROW( Unknown_File_Format );
67 goto Exit;
68 }
69
70 /* now, propagate the charstrings and glyphnames tables */
71 /* to the Type1 data */
72 type1->num_glyphs = loader.num_glyphs;
73
74 if ( !loader.charstrings.init )
75 {
76 FT_ERROR(( "T42_Open_Face: no charstrings array in face\n" ));
77 error = FT_THROW( Invalid_File_Format );
78 }
79
80 loader.charstrings.init = 0;
81 type1->charstrings_block = loader.charstrings.block;
82 type1->charstrings = loader.charstrings.elements;
83 type1->charstrings_len = loader.charstrings.lengths;
84
85 /* we copy the glyph names `block' and `elements' fields; */
86 /* the `lengths' field must be released later */
87 type1->glyph_names_block = loader.glyph_names.block;
88 type1->glyph_names = (FT_String**)loader.glyph_names.elements;
89 loader.glyph_names.block = 0;
90 loader.glyph_names.elements = 0;
91
92 /* we must now build type1.encoding when we have a custom array */
93 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
94 {
95 FT_Int charcode, idx, min_char, max_char;
96 FT_Byte* glyph_name;
97
98
99 /* OK, we do the following: for each element in the encoding */
100 /* table, look up the index of the glyph having the same name */
101 /* as defined in the CharStrings array. */
102 /* The index is then stored in type1.encoding.char_index, and */
103 /* the name in type1.encoding.char_name */
104
105 min_char = 0;
106 max_char = 0;
107
108 charcode = 0;
109 for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
110 {
111 FT_Byte* char_name;
112
113
114 type1->encoding.char_index[charcode] = 0;
115 type1->encoding.char_name [charcode] = (char *)".notdef";
116
117 char_name = loader.encoding_table.elements[charcode];
118 if ( char_name )
119 for ( idx = 0; idx < type1->num_glyphs; idx++ )
120 {
121 glyph_name = (FT_Byte*)type1->glyph_names[idx];
122 if ( ft_strcmp( (const char*)char_name,
123 (const char*)glyph_name ) == 0 )
124 {
125 type1->encoding.char_index[charcode] = (FT_UShort)idx;
126 type1->encoding.char_name [charcode] = (char*)glyph_name;
127
128 /* Change min/max encoded char only if glyph name is */
129 /* not /.notdef */
130 if ( ft_strcmp( (const char*)".notdef",
131 (const char*)glyph_name ) != 0 )
132 {
133 if ( charcode < min_char )
134 min_char = charcode;
135 if ( charcode >= max_char )
136 max_char = charcode + 1;
137 }
138 break;
139 }
140 }
141 }
142
143 type1->encoding.code_first = min_char;
144 type1->encoding.code_last = max_char;
145 type1->encoding.num_chars = loader.num_chars;
146 }
147
148 Exit:
149 t42_loader_done( &loader );
150 return error;
151 }
152
153
154 /***************** Driver Functions *************/
155
156
157 FT_LOCAL_DEF( FT_Error )
158 T42_Face_Init( FT_Stream stream,
159 FT_Face t42face, /* T42_Face */
160 FT_Int face_index,
161 FT_Int num_params,
162 FT_Parameter* params )
163 {
164 T42_Face face = (T42_Face)t42face;
165 FT_Error error;
166 FT_Service_PsCMaps psnames;
167 PSAux_Service psaux;
168 FT_Face root = (FT_Face)&face->root;
169 T1_Font type1 = &face->type1;
170 PS_FontInfo info = &type1->font_info;
171
172 FT_UNUSED( num_params );
173 FT_UNUSED( params );
174 FT_UNUSED( stream );
175
176
177 face->ttf_face = NULL;
178 face->root.num_faces = 1;
179
180 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
181 face->psnames = psnames;
182
183 face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
184 "psaux" );
185 psaux = (PSAux_Service)face->psaux;
186 if ( !psaux )
187 {
188 FT_ERROR(( "T42_Face_Init: cannot access `psaux' module\n" ));
189 error = FT_THROW( Missing_Module );
190 goto Exit;
191 }
192
193 FT_TRACE2(( "Type 42 driver\n" ));
194
195 /* open the tokenizer, this will also check the font format */
196 error = T42_Open_Face( face );
197 if ( error )
198 goto Exit;
199
200 /* if we just wanted to check the format, leave successfully now */
201 if ( face_index < 0 )
202 goto Exit;
203
204 /* check the face index */
205 if ( face_index > 0 )
206 {
207 FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
208 error = FT_THROW( Invalid_Argument );
209 goto Exit;
210 }
211
212 /* Now load the font program into the face object */
213
214 /* Init the face object fields */
215 /* Now set up root face fields */
216
217 root->num_glyphs = type1->num_glyphs;
218 root->num_charmaps = 0;
219 root->face_index = 0;
220
221 root->face_flags = FT_FACE_FLAG_SCALABLE |
222 FT_FACE_FLAG_HORIZONTAL |
223 FT_FACE_FLAG_GLYPH_NAMES;
224
225 if ( info->is_fixed_pitch )
226 root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
227
228 /* We only set this flag if we have the patented bytecode interpreter. */
229 /* There are no known `tricky' Type42 fonts that could be loaded with */
230 /* the unpatented interpreter. */
231 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
232 root->face_flags |= FT_FACE_FLAG_HINTER;
233 #endif
234
235 /* XXX: TODO -- add kerning with .afm support */
236
237 /* get style name -- be careful, some broken fonts only */
238 /* have a `/FontName' dictionary entry! */
239 root->family_name = info->family_name;
240 /* assume "Regular" style if we don't know better */
241 root->style_name = (char *)"Regular";
242 if ( root->family_name )
243 {
244 char* full = info->full_name;
245 char* family = root->family_name;
246
247
248 if ( full )
249 {
250 while ( *full )
251 {
252 if ( *full == *family )
253 {
254 family++;
255 full++;
256 }
257 else
258 {
259 if ( *full == ' ' || *full == '-' )
260 full++;
261 else if ( *family == ' ' || *family == '-' )
262 family++;
263 else
264 {
265 if ( !*family )
266 root->style_name = full;
267 break;
268 }
269 }
270 }
271 }
272 }
273 else
274 {
275 /* do we have a `/FontName'? */
276 if ( type1->font_name )
277 root->family_name = type1->font_name;
278 }
279
280 /* no embedded bitmap support */
281 root->num_fixed_sizes = 0;
282 root->available_sizes = 0;
283
284 /* Load the TTF font embedded in the T42 font */
285 {
286 FT_Open_Args args;
287
288
289 args.flags = FT_OPEN_MEMORY;
290 args.memory_base = face->ttf_data;
291 args.memory_size = face->ttf_size;
292
293 if ( num_params )
294 {
295 args.flags |= FT_OPEN_PARAMS;
296 args.num_params = num_params;
297 args.params = params;
298 }
299
300 error = FT_Open_Face( FT_FACE_LIBRARY( face ),
301 &args, 0, &face->ttf_face );
302 }
303
304 if ( error )
305 goto Exit;
306
307 FT_Done_Size( face->ttf_face->size );
308
309 /* Ignore info in FontInfo dictionary and use the info from the */
310 /* loaded TTF font. The PostScript interpreter also ignores it. */
311 root->bbox = face->ttf_face->bbox;
312 root->units_per_EM = face->ttf_face->units_per_EM;
313
314 root->ascender = face->ttf_face->ascender;
315 root->descender = face->ttf_face->descender;
316 root->height = face->ttf_face->height;
317
318 root->max_advance_width = face->ttf_face->max_advance_width;
319 root->max_advance_height = face->ttf_face->max_advance_height;
320
321 root->underline_position = (FT_Short)info->underline_position;
322 root->underline_thickness = (FT_Short)info->underline_thickness;
323
324 /* compute style flags */
325 root->style_flags = 0;
326 if ( info->italic_angle )
327 root->style_flags |= FT_STYLE_FLAG_ITALIC;
328
329 if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD )
330 root->style_flags |= FT_STYLE_FLAG_BOLD;
331
332 if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL )
333 root->face_flags |= FT_FACE_FLAG_VERTICAL;
334
335 {
336 if ( psnames )
337 {
338 FT_CharMapRec charmap;
339 T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;
340 FT_CMap_Class clazz;
341
342
343 charmap.face = root;
344
345 /* first of all, try to synthesize a Unicode charmap */
346 charmap.platform_id = TT_PLATFORM_MICROSOFT;
347 charmap.encoding_id = TT_MS_ID_UNICODE_CS;
348 charmap.encoding = FT_ENCODING_UNICODE;
349
350 error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
351 if ( error &&
352 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )
353 goto Exit;
354 error = FT_Err_Ok;
355
356 /* now, generate an Adobe Standard encoding when appropriate */
357 charmap.platform_id = TT_PLATFORM_ADOBE;
358 clazz = NULL;
359
360 switch ( type1->encoding_type )
361 {
362 case T1_ENCODING_TYPE_STANDARD:
363 charmap.encoding = FT_ENCODING_ADOBE_STANDARD;
364 charmap.encoding_id = TT_ADOBE_ID_STANDARD;
365 clazz = cmap_classes->standard;
366 break;
367
368 case T1_ENCODING_TYPE_EXPERT:
369 charmap.encoding = FT_ENCODING_ADOBE_EXPERT;
370 charmap.encoding_id = TT_ADOBE_ID_EXPERT;
371 clazz = cmap_classes->expert;
372 break;
373
374 case T1_ENCODING_TYPE_ARRAY:
375 charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;
376 charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
377 clazz = cmap_classes->custom;
378 break;
379
380 case T1_ENCODING_TYPE_ISOLATIN1:
381 charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;
382 charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
383 clazz = cmap_classes->unicode;
384 break;
385
386 default:
387 ;
388 }
389
390 if ( clazz )
391 error = FT_CMap_New( clazz, NULL, &charmap, NULL );
392
393 #if 0
394 /* Select default charmap */
395 if ( root->num_charmaps )
396 root->charmap = root->charmaps[0];
397 #endif
398 }
399 }
400 Exit:
401 return error;
402 }
403
404
405 FT_LOCAL_DEF( void )
406 T42_Face_Done( FT_Face t42face )
407 {
408 T42_Face face = (T42_Face)t42face;
409 T1_Font type1;
410 PS_FontInfo info;
411 FT_Memory memory;
412
413
414 if ( !face )
415 return;
416
417 type1 = &face->type1;
418 info = &type1->font_info;
419 memory = face->root.memory;
420
421 /* delete internal ttf face prior to freeing face->ttf_data */
422 if ( face->ttf_face )
423 FT_Done_Face( face->ttf_face );
424
425 /* release font info strings */
426 FT_FREE( info->version );
427 FT_FREE( info->notice );
428 FT_FREE( info->full_name );
429 FT_FREE( info->family_name );
430 FT_FREE( info->weight );
431
432 /* release top dictionary */
433 FT_FREE( type1->charstrings_len );
434 FT_FREE( type1->charstrings );
435 FT_FREE( type1->glyph_names );
436
437 FT_FREE( type1->charstrings_block );
438 FT_FREE( type1->glyph_names_block );
439
440 FT_FREE( type1->encoding.char_index );
441 FT_FREE( type1->encoding.char_name );
442 FT_FREE( type1->font_name );
443
444 FT_FREE( face->ttf_data );
445
446 #if 0
447 /* release afm data if present */
448 if ( face->afm_data )
449 T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
450 #endif
451
452 /* release unicode map, if any */
453 FT_FREE( face->unicode_map.maps );
454 face->unicode_map.num_maps = 0;
455
456 face->root.family_name = 0;
457 face->root.style_name = 0;
458 }
459
460
461 /*************************************************************************/
462 /* */
463 /* <Function> */
464 /* T42_Driver_Init */
465 /* */
466 /* <Description> */
467 /* Initializes a given Type 42 driver object. */
468 /* */
469 /* <Input> */
470 /* driver :: A handle to the target driver object. */
471 /* */
472 /* <Return> */
473 /* FreeType error code. 0 means success. */
474 /* */
475 FT_LOCAL_DEF( FT_Error )
476 T42_Driver_Init( FT_Module module ) /* T42_Driver */
477 {
478 T42_Driver driver = (T42_Driver)module;
479 FT_Module ttmodule;
480
481
482 ttmodule = FT_Get_Module( module->library, "truetype" );
483 if ( !ttmodule )
484 {
485 FT_ERROR(( "T42_Driver_Init: cannot access `truetype' module\n" ));
486 return FT_THROW( Missing_Module );
487 }
488
489 driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;
490
491 return FT_Err_Ok;
492 }
493
494
495 FT_LOCAL_DEF( void )
496 T42_Driver_Done( FT_Module module )
497 {
498 FT_UNUSED( module );
499 }
500
501
502 FT_LOCAL_DEF( FT_Error )
503 T42_Size_Init( FT_Size size ) /* T42_Size */
504 {
505 T42_Size t42size = (T42_Size)size;
506 FT_Face face = size->face;
507 T42_Face t42face = (T42_Face)face;
508 FT_Size ttsize;
509 FT_Error error;
510
511
512 error = FT_New_Size( t42face->ttf_face, &ttsize );
513 t42size->ttsize = ttsize;
514
515 FT_Activate_Size( ttsize );
516
517 return error;
518 }
519
520
521 FT_LOCAL_DEF( FT_Error )
522 T42_Size_Request( FT_Size t42size, /* T42_Size */
523 FT_Size_Request req )
524 {
525 T42_Size size = (T42_Size)t42size;
526 T42_Face face = (T42_Face)t42size->face;
527 FT_Error error;
528
529
530 FT_Activate_Size( size->ttsize );
531
532 error = FT_Request_Size( face->ttf_face, req );
533 if ( !error )
534 t42size->metrics = face->ttf_face->size->metrics;
535
536 return error;
537 }
538
539
540 FT_LOCAL_DEF( FT_Error )
541 T42_Size_Select( FT_Size t42size, /* T42_Size */
542 FT_ULong strike_index )
543 {
544 T42_Size size = (T42_Size)t42size;
545 T42_Face face = (T42_Face)t42size->face;
546 FT_Error error;
547
548
549 FT_Activate_Size( size->ttsize );
550
551 error = FT_Select_Size( face->ttf_face, (FT_Int)strike_index );
552 if ( !error )
553 t42size->metrics = face->ttf_face->size->metrics;
554
555 return error;
556
557 }
558
559
560 FT_LOCAL_DEF( void )
561 T42_Size_Done( FT_Size t42size ) /* T42_Size */
562 {
563 T42_Size size = (T42_Size)t42size;
564 FT_Face face = t42size->face;
565 T42_Face t42face = (T42_Face)face;
566 FT_ListNode node;
567
568
569 node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
570 if ( node )
571 {
572 FT_Done_Size( size->ttsize );
573 size->ttsize = NULL;
574 }
575 }
576
577
578 FT_LOCAL_DEF( FT_Error )
579 T42_GlyphSlot_Init( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
580 {
581 T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
582 FT_Face face = t42slot->face;
583 T42_Face t42face = (T42_Face)face;
584 FT_GlyphSlot ttslot;
585 FT_Error error = FT_Err_Ok;
586
587
588 if ( face->glyph == NULL )
589 {
590 /* First glyph slot for this face */
591 slot->ttslot = t42face->ttf_face->glyph;
592 }
593 else
594 {
595 error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
596 slot->ttslot = ttslot;
597 }
598
599 return error;
600 }
601
602
603 FT_LOCAL_DEF( void )
604 T42_GlyphSlot_Done( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
605 {
606 T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
607
608
609 FT_Done_GlyphSlot( slot->ttslot );
610 }
611
612
613 static void
614 t42_glyphslot_clear( FT_GlyphSlot slot )
615 {
616 /* free bitmap if needed */
617 ft_glyphslot_free_bitmap( slot );
618
619 /* clear all public fields in the glyph slot */
620 FT_ZERO( &slot->metrics );
621 FT_ZERO( &slot->outline );
622 FT_ZERO( &slot->bitmap );
623
624 slot->bitmap_left = 0;
625 slot->bitmap_top = 0;
626 slot->num_subglyphs = 0;
627 slot->subglyphs = 0;
628 slot->control_data = 0;
629 slot->control_len = 0;
630 slot->other = 0;
631 slot->format = FT_GLYPH_FORMAT_NONE;
632
633 slot->linearHoriAdvance = 0;
634 slot->linearVertAdvance = 0;
635 }
636
637
638 FT_LOCAL_DEF( FT_Error )
639 T42_GlyphSlot_Load( FT_GlyphSlot glyph,
640 FT_Size size,
641 FT_UInt glyph_index,
642 FT_Int32 load_flags )
643 {
644 FT_Error error;
645 T42_GlyphSlot t42slot = (T42_GlyphSlot)glyph;
646 T42_Size t42size = (T42_Size)size;
647 FT_Driver_Class ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;
648
649
650 FT_TRACE1(( "T42_GlyphSlot_Load: glyph index %d\n", glyph_index ));
651
652 t42_glyphslot_clear( t42slot->ttslot );
653 error = ttclazz->load_glyph( t42slot->ttslot,
654 t42size->ttsize,
655 glyph_index,
656 load_flags | FT_LOAD_NO_BITMAP );
657
658 if ( !error )
659 {
660 glyph->metrics = t42slot->ttslot->metrics;
661
662 glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
663 glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;
664
665 glyph->format = t42slot->ttslot->format;
666 glyph->outline = t42slot->ttslot->outline;
667
668 glyph->bitmap = t42slot->ttslot->bitmap;
669 glyph->bitmap_left = t42slot->ttslot->bitmap_left;
670 glyph->bitmap_top = t42slot->ttslot->bitmap_top;
671
672 glyph->num_subglyphs = t42slot->ttslot->num_subglyphs;
673 glyph->subglyphs = t42slot->ttslot->subglyphs;
674
675 glyph->control_data = t42slot->ttslot->control_data;
676 glyph->control_len = t42slot->ttslot->control_len;
677 }
678
679 return error;
680 }
681
682
683 /* END */
A free Windows-compatible Operating System