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[reactos.git] / lib / 3rdparty / freetype / src / type1 / t1objs.c
1 /***************************************************************************/
2 /* */
3 /* t1objs.c */
4 /* */
5 /* Type 1 objects manager (body). */
6 /* */
7 /* Copyright 1996-2009, 2011, 2013 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 <ft2build.h>
20 #include FT_INTERNAL_CALC_H
21 #include FT_INTERNAL_DEBUG_H
22 #include FT_INTERNAL_STREAM_H
23 #include FT_TRUETYPE_IDS_H
24
25 #include "t1gload.h"
26 #include "t1load.h"
27
28 #include "t1errors.h"
29
30 #ifndef T1_CONFIG_OPTION_NO_AFM
31 #include "t1afm.h"
32 #endif
33
34 #include FT_SERVICE_POSTSCRIPT_CMAPS_H
35 #include FT_INTERNAL_POSTSCRIPT_AUX_H
36
37
38 /*************************************************************************/
39 /* */
40 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
41 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
42 /* messages during execution. */
43 /* */
44 #undef FT_COMPONENT
45 #define FT_COMPONENT trace_t1objs
46
47
48 /*************************************************************************/
49 /* */
50 /* SIZE FUNCTIONS */
51 /* */
52 /* note that we store the global hints in the size's "internal" root */
53 /* field */
54 /* */
55 /*************************************************************************/
56
57
58 static PSH_Globals_Funcs
59 T1_Size_Get_Globals_Funcs( T1_Size size )
60 {
61 T1_Face face = (T1_Face)size->root.face;
62 PSHinter_Service pshinter = (PSHinter_Service)face->pshinter;
63 FT_Module module;
64
65
66 module = FT_Get_Module( size->root.face->driver->root.library,
67 "pshinter" );
68 return ( module && pshinter && pshinter->get_globals_funcs )
69 ? pshinter->get_globals_funcs( module )
70 : 0 ;
71 }
72
73
74 FT_LOCAL_DEF( void )
75 T1_Size_Done( FT_Size t1size ) /* T1_Size */
76 {
77 T1_Size size = (T1_Size)t1size;
78
79
80 if ( size->root.internal )
81 {
82 PSH_Globals_Funcs funcs;
83
84
85 funcs = T1_Size_Get_Globals_Funcs( size );
86 if ( funcs )
87 funcs->destroy( (PSH_Globals)size->root.internal );
88
89 size->root.internal = 0;
90 }
91 }
92
93
94 FT_LOCAL_DEF( FT_Error )
95 T1_Size_Init( FT_Size t1size ) /* T1_Size */
96 {
97 T1_Size size = (T1_Size)t1size;
98 FT_Error error = FT_Err_Ok;
99 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );
100
101
102 if ( funcs )
103 {
104 PSH_Globals globals;
105 T1_Face face = (T1_Face)size->root.face;
106
107
108 error = funcs->create( size->root.face->memory,
109 &face->type1.private_dict, &globals );
110 if ( !error )
111 size->root.internal = (FT_Size_Internal)(void*)globals;
112 }
113
114 return error;
115 }
116
117
118 FT_LOCAL_DEF( FT_Error )
119 T1_Size_Request( FT_Size t1size, /* T1_Size */
120 FT_Size_Request req )
121 {
122 T1_Size size = (T1_Size)t1size;
123 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );
124
125
126 FT_Request_Metrics( size->root.face, req );
127
128 if ( funcs )
129 funcs->set_scale( (PSH_Globals)size->root.internal,
130 size->root.metrics.x_scale,
131 size->root.metrics.y_scale,
132 0, 0 );
133
134 return FT_Err_Ok;
135 }
136
137
138 /*************************************************************************/
139 /* */
140 /* SLOT FUNCTIONS */
141 /* */
142 /*************************************************************************/
143
144 FT_LOCAL_DEF( void )
145 T1_GlyphSlot_Done( FT_GlyphSlot slot )
146 {
147 slot->internal->glyph_hints = 0;
148 }
149
150
151 FT_LOCAL_DEF( FT_Error )
152 T1_GlyphSlot_Init( FT_GlyphSlot slot )
153 {
154 T1_Face face;
155 PSHinter_Service pshinter;
156
157
158 face = (T1_Face)slot->face;
159 pshinter = (PSHinter_Service)face->pshinter;
160
161 if ( pshinter )
162 {
163 FT_Module module;
164
165
166 module = FT_Get_Module( slot->face->driver->root.library,
167 "pshinter" );
168 if ( module )
169 {
170 T1_Hints_Funcs funcs;
171
172
173 funcs = pshinter->get_t1_funcs( module );
174 slot->internal->glyph_hints = (void*)funcs;
175 }
176 }
177
178 return 0;
179 }
180
181
182 /*************************************************************************/
183 /* */
184 /* FACE FUNCTIONS */
185 /* */
186 /*************************************************************************/
187
188
189 /*************************************************************************/
190 /* */
191 /* <Function> */
192 /* T1_Face_Done */
193 /* */
194 /* <Description> */
195 /* The face object destructor. */
196 /* */
197 /* <Input> */
198 /* face :: A typeless pointer to the face object to destroy. */
199 /* */
200 FT_LOCAL_DEF( void )
201 T1_Face_Done( FT_Face t1face ) /* T1_Face */
202 {
203 T1_Face face = (T1_Face)t1face;
204 FT_Memory memory;
205 T1_Font type1;
206
207
208 if ( !face )
209 return;
210
211 memory = face->root.memory;
212 type1 = &face->type1;
213
214 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
215 /* release multiple masters information */
216 FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
217
218 if ( face->buildchar )
219 {
220 FT_FREE( face->buildchar );
221
222 face->buildchar = NULL;
223 face->len_buildchar = 0;
224 }
225
226 T1_Done_Blend( face );
227 face->blend = 0;
228 #endif
229
230 /* release font info strings */
231 {
232 PS_FontInfo info = &type1->font_info;
233
234
235 FT_FREE( info->version );
236 FT_FREE( info->notice );
237 FT_FREE( info->full_name );
238 FT_FREE( info->family_name );
239 FT_FREE( info->weight );
240 }
241
242 /* release top dictionary */
243 FT_FREE( type1->charstrings_len );
244 FT_FREE( type1->charstrings );
245 FT_FREE( type1->glyph_names );
246
247 FT_FREE( type1->subrs );
248 FT_FREE( type1->subrs_len );
249
250 FT_FREE( type1->subrs_block );
251 FT_FREE( type1->charstrings_block );
252 FT_FREE( type1->glyph_names_block );
253
254 FT_FREE( type1->encoding.char_index );
255 FT_FREE( type1->encoding.char_name );
256 FT_FREE( type1->font_name );
257
258 #ifndef T1_CONFIG_OPTION_NO_AFM
259 /* release afm data if present */
260 if ( face->afm_data )
261 T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data );
262 #endif
263
264 /* release unicode map, if any */
265 #if 0
266 FT_FREE( face->unicode_map_rec.maps );
267 face->unicode_map_rec.num_maps = 0;
268 face->unicode_map = NULL;
269 #endif
270
271 face->root.family_name = NULL;
272 face->root.style_name = NULL;
273 }
274
275
276 /*************************************************************************/
277 /* */
278 /* <Function> */
279 /* T1_Face_Init */
280 /* */
281 /* <Description> */
282 /* The face object constructor. */
283 /* */
284 /* <Input> */
285 /* stream :: input stream where to load font data. */
286 /* */
287 /* face_index :: The index of the font face in the resource. */
288 /* */
289 /* num_params :: Number of additional generic parameters. Ignored. */
290 /* */
291 /* params :: Additional generic parameters. Ignored. */
292 /* */
293 /* <InOut> */
294 /* face :: The face record to build. */
295 /* */
296 /* <Return> */
297 /* FreeType error code. 0 means success. */
298 /* */
299 FT_LOCAL_DEF( FT_Error )
300 T1_Face_Init( FT_Stream stream,
301 FT_Face t1face, /* T1_Face */
302 FT_Int face_index,
303 FT_Int num_params,
304 FT_Parameter* params )
305 {
306 T1_Face face = (T1_Face)t1face;
307 FT_Error error;
308 FT_Service_PsCMaps psnames;
309 PSAux_Service psaux;
310 T1_Font type1 = &face->type1;
311 PS_FontInfo info = &type1->font_info;
312
313 FT_UNUSED( num_params );
314 FT_UNUSED( params );
315 FT_UNUSED( stream );
316
317
318 face->root.num_faces = 1;
319
320 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
321 face->psnames = psnames;
322
323 face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
324 "psaux" );
325 psaux = (PSAux_Service)face->psaux;
326 if ( !psaux )
327 {
328 FT_ERROR(( "T1_Face_Init: cannot access `psaux' module\n" ));
329 error = FT_THROW( Missing_Module );
330 goto Exit;
331 }
332
333 face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
334 "pshinter" );
335
336 FT_TRACE2(( "Type 1 driver\n" ));
337
338 /* open the tokenizer; this will also check the font format */
339 error = T1_Open_Face( face );
340 if ( error )
341 goto Exit;
342
343 /* if we just wanted to check the format, leave successfully now */
344 if ( face_index < 0 )
345 goto Exit;
346
347 /* check the face index */
348 if ( face_index > 0 )
349 {
350 FT_ERROR(( "T1_Face_Init: invalid face index\n" ));
351 error = FT_THROW( Invalid_Argument );
352 goto Exit;
353 }
354
355 /* now load the font program into the face object */
356
357 /* initialize the face object fields */
358
359 /* set up root face fields */
360 {
361 FT_Face root = (FT_Face)&face->root;
362
363
364 root->num_glyphs = type1->num_glyphs;
365 root->face_index = 0;
366
367 root->face_flags |= FT_FACE_FLAG_SCALABLE |
368 FT_FACE_FLAG_HORIZONTAL |
369 FT_FACE_FLAG_GLYPH_NAMES |
370 FT_FACE_FLAG_HINTER;
371
372 if ( info->is_fixed_pitch )
373 root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
374
375 if ( face->blend )
376 root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
377
378 /* XXX: TODO -- add kerning with .afm support */
379
380
381 /* The following code to extract the family and the style is very */
382 /* simplistic and might get some things wrong. For a full-featured */
383 /* algorithm you might have a look at the whitepaper given at */
384 /* */
385 /* http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */
386
387 /* get style name -- be careful, some broken fonts only */
388 /* have a `/FontName' dictionary entry! */
389 root->family_name = info->family_name;
390 root->style_name = NULL;
391
392 if ( root->family_name )
393 {
394 char* full = info->full_name;
395 char* family = root->family_name;
396
397
398 if ( full )
399 {
400 FT_Bool the_same = TRUE;
401
402
403 while ( *full )
404 {
405 if ( *full == *family )
406 {
407 family++;
408 full++;
409 }
410 else
411 {
412 if ( *full == ' ' || *full == '-' )
413 full++;
414 else if ( *family == ' ' || *family == '-' )
415 family++;
416 else
417 {
418 the_same = FALSE;
419
420 if ( !*family )
421 root->style_name = full;
422 break;
423 }
424 }
425 }
426
427 if ( the_same )
428 root->style_name = (char *)"Regular";
429 }
430 }
431 else
432 {
433 /* do we have a `/FontName'? */
434 if ( type1->font_name )
435 root->family_name = type1->font_name;
436 }
437
438 if ( !root->style_name )
439 {
440 if ( info->weight )
441 root->style_name = info->weight;
442 else
443 /* assume `Regular' style because we don't know better */
444 root->style_name = (char *)"Regular";
445 }
446
447 /* compute style flags */
448 root->style_flags = 0;
449 if ( info->italic_angle )
450 root->style_flags |= FT_STYLE_FLAG_ITALIC;
451 if ( info->weight )
452 {
453 if ( !ft_strcmp( info->weight, "Bold" ) ||
454 !ft_strcmp( info->weight, "Black" ) )
455 root->style_flags |= FT_STYLE_FLAG_BOLD;
456 }
457
458 /* no embedded bitmap support */
459 root->num_fixed_sizes = 0;
460 root->available_sizes = 0;
461
462 root->bbox.xMin = type1->font_bbox.xMin >> 16;
463 root->bbox.yMin = type1->font_bbox.yMin >> 16;
464 /* no `U' suffix here to 0xFFFF! */
465 root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16;
466 root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16;
467
468 /* Set units_per_EM if we didn't set it in t1_parse_font_matrix. */
469 if ( !root->units_per_EM )
470 root->units_per_EM = 1000;
471
472 root->ascender = (FT_Short)( root->bbox.yMax );
473 root->descender = (FT_Short)( root->bbox.yMin );
474
475 root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );
476 if ( root->height < root->ascender - root->descender )
477 root->height = (FT_Short)( root->ascender - root->descender );
478
479 /* now compute the maximum advance width */
480 root->max_advance_width =
481 (FT_Short)( root->bbox.xMax );
482 {
483 FT_Pos max_advance;
484
485
486 error = T1_Compute_Max_Advance( face, &max_advance );
487
488 /* in case of error, keep the standard width */
489 if ( !error )
490 root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance );
491 else
492 error = FT_Err_Ok; /* clear error */
493 }
494
495 root->max_advance_height = root->height;
496
497 root->underline_position = (FT_Short)info->underline_position;
498 root->underline_thickness = (FT_Short)info->underline_thickness;
499 }
500
501 {
502 FT_Face root = &face->root;
503
504
505 if ( psnames )
506 {
507 FT_CharMapRec charmap;
508 T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;
509 FT_CMap_Class clazz;
510
511
512 charmap.face = root;
513
514 /* first of all, try to synthesize a Unicode charmap */
515 charmap.platform_id = TT_PLATFORM_MICROSOFT;
516 charmap.encoding_id = TT_MS_ID_UNICODE_CS;
517 charmap.encoding = FT_ENCODING_UNICODE;
518
519 error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
520 if ( error &&
521 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )
522 goto Exit;
523 error = FT_Err_Ok;
524
525 /* now, generate an Adobe Standard encoding when appropriate */
526 charmap.platform_id = TT_PLATFORM_ADOBE;
527 clazz = NULL;
528
529 switch ( type1->encoding_type )
530 {
531 case T1_ENCODING_TYPE_STANDARD:
532 charmap.encoding = FT_ENCODING_ADOBE_STANDARD;
533 charmap.encoding_id = TT_ADOBE_ID_STANDARD;
534 clazz = cmap_classes->standard;
535 break;
536
537 case T1_ENCODING_TYPE_EXPERT:
538 charmap.encoding = FT_ENCODING_ADOBE_EXPERT;
539 charmap.encoding_id = TT_ADOBE_ID_EXPERT;
540 clazz = cmap_classes->expert;
541 break;
542
543 case T1_ENCODING_TYPE_ARRAY:
544 charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;
545 charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
546 clazz = cmap_classes->custom;
547 break;
548
549 case T1_ENCODING_TYPE_ISOLATIN1:
550 charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;
551 charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
552 clazz = cmap_classes->unicode;
553 break;
554
555 default:
556 ;
557 }
558
559 if ( clazz )
560 error = FT_CMap_New( clazz, NULL, &charmap, NULL );
561
562 #if 0
563 /* Select default charmap */
564 if (root->num_charmaps)
565 root->charmap = root->charmaps[0];
566 #endif
567 }
568 }
569
570 Exit:
571 return error;
572 }
573
574
575 /*************************************************************************/
576 /* */
577 /* <Function> */
578 /* T1_Driver_Init */
579 /* */
580 /* <Description> */
581 /* Initializes a given Type 1 driver object. */
582 /* */
583 /* <Input> */
584 /* driver :: A handle to the target driver object. */
585 /* */
586 /* <Return> */
587 /* FreeType error code. 0 means success. */
588 /* */
589 FT_LOCAL_DEF( FT_Error )
590 T1_Driver_Init( FT_Module driver )
591 {
592 FT_UNUSED( driver );
593
594 return FT_Err_Ok;
595 }
596
597
598 /*************************************************************************/
599 /* */
600 /* <Function> */
601 /* T1_Driver_Done */
602 /* */
603 /* <Description> */
604 /* Finalizes a given Type 1 driver. */
605 /* */
606 /* <Input> */
607 /* driver :: A handle to the target Type 1 driver. */
608 /* */
609 FT_LOCAL_DEF( void )
610 T1_Driver_Done( FT_Module driver )
611 {
612 FT_UNUSED( driver );
613 }
614
615
616 /* END */
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