[CMAKE]
[reactos.git] / lib / 3rdparty / freetype / src / type1 / t1objs.c
1 /***************************************************************************/
2 /* */
3 /* t1objs.c */
4 /* */
5 /* Type 1 objects manager (body). */
6 /* */
7 /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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( T1_Size size )
76 {
77 if ( size->root.internal )
78 {
79 PSH_Globals_Funcs funcs;
80
81
82 funcs = T1_Size_Get_Globals_Funcs( size );
83 if ( funcs )
84 funcs->destroy( (PSH_Globals)size->root.internal );
85
86 size->root.internal = 0;
87 }
88 }
89
90
91 FT_LOCAL_DEF( FT_Error )
92 T1_Size_Init( T1_Size size )
93 {
94 FT_Error error = T1_Err_Ok;
95 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );
96
97
98 if ( funcs )
99 {
100 PSH_Globals globals;
101 T1_Face face = (T1_Face)size->root.face;
102
103
104 error = funcs->create( size->root.face->memory,
105 &face->type1.private_dict, &globals );
106 if ( !error )
107 size->root.internal = (FT_Size_Internal)(void*)globals;
108 }
109
110 return error;
111 }
112
113
114 FT_LOCAL_DEF( FT_Error )
115 T1_Size_Request( T1_Size size,
116 FT_Size_Request req )
117 {
118 PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size );
119
120
121 FT_Request_Metrics( size->root.face, req );
122
123 if ( funcs )
124 funcs->set_scale( (PSH_Globals)size->root.internal,
125 size->root.metrics.x_scale,
126 size->root.metrics.y_scale,
127 0, 0 );
128
129 return T1_Err_Ok;
130 }
131
132
133 /*************************************************************************/
134 /* */
135 /* SLOT FUNCTIONS */
136 /* */
137 /*************************************************************************/
138
139 FT_LOCAL_DEF( void )
140 T1_GlyphSlot_Done( T1_GlyphSlot slot )
141 {
142 slot->root.internal->glyph_hints = 0;
143 }
144
145
146 FT_LOCAL_DEF( FT_Error )
147 T1_GlyphSlot_Init( T1_GlyphSlot slot )
148 {
149 T1_Face face;
150 PSHinter_Service pshinter;
151
152
153 face = (T1_Face)slot->root.face;
154 pshinter = (PSHinter_Service)face->pshinter;
155
156 if ( pshinter )
157 {
158 FT_Module module;
159
160
161 module = FT_Get_Module( slot->root.face->driver->root.library, "pshinter" );
162 if (module)
163 {
164 T1_Hints_Funcs funcs;
165
166 funcs = pshinter->get_t1_funcs( module );
167 slot->root.internal->glyph_hints = (void*)funcs;
168 }
169 }
170 return 0;
171 }
172
173
174 /*************************************************************************/
175 /* */
176 /* FACE FUNCTIONS */
177 /* */
178 /*************************************************************************/
179
180
181 /*************************************************************************/
182 /* */
183 /* <Function> */
184 /* T1_Face_Done */
185 /* */
186 /* <Description> */
187 /* The face object destructor. */
188 /* */
189 /* <Input> */
190 /* face :: A typeless pointer to the face object to destroy. */
191 /* */
192 FT_LOCAL_DEF( void )
193 T1_Face_Done( T1_Face face )
194 {
195 FT_Memory memory;
196 T1_Font type1;
197
198
199 if ( !face )
200 return;
201
202 memory = face->root.memory;
203 type1 = &face->type1;
204
205 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
206 /* release multiple masters information */
207 FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
208
209 if ( face->buildchar )
210 {
211 FT_FREE( face->buildchar );
212
213 face->buildchar = NULL;
214 face->len_buildchar = 0;
215 }
216
217 T1_Done_Blend( face );
218 face->blend = 0;
219 #endif
220
221 /* release font info strings */
222 {
223 PS_FontInfo info = &type1->font_info;
224
225
226 FT_FREE( info->version );
227 FT_FREE( info->notice );
228 FT_FREE( info->full_name );
229 FT_FREE( info->family_name );
230 FT_FREE( info->weight );
231 }
232
233 /* release top dictionary */
234 FT_FREE( type1->charstrings_len );
235 FT_FREE( type1->charstrings );
236 FT_FREE( type1->glyph_names );
237
238 FT_FREE( type1->subrs );
239 FT_FREE( type1->subrs_len );
240
241 FT_FREE( type1->subrs_block );
242 FT_FREE( type1->charstrings_block );
243 FT_FREE( type1->glyph_names_block );
244
245 FT_FREE( type1->encoding.char_index );
246 FT_FREE( type1->encoding.char_name );
247 FT_FREE( type1->font_name );
248
249 #ifndef T1_CONFIG_OPTION_NO_AFM
250 /* release afm data if present */
251 if ( face->afm_data )
252 T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data );
253 #endif
254
255 /* release unicode map, if any */
256 #if 0
257 FT_FREE( face->unicode_map_rec.maps );
258 face->unicode_map_rec.num_maps = 0;
259 face->unicode_map = NULL;
260 #endif
261
262 face->root.family_name = NULL;
263 face->root.style_name = NULL;
264 }
265
266
267 /*************************************************************************/
268 /* */
269 /* <Function> */
270 /* T1_Face_Init */
271 /* */
272 /* <Description> */
273 /* The face object constructor. */
274 /* */
275 /* <Input> */
276 /* stream :: input stream where to load font data. */
277 /* */
278 /* face_index :: The index of the font face in the resource. */
279 /* */
280 /* num_params :: Number of additional generic parameters. Ignored. */
281 /* */
282 /* params :: Additional generic parameters. Ignored. */
283 /* */
284 /* <InOut> */
285 /* face :: The face record to build. */
286 /* */
287 /* <Return> */
288 /* FreeType error code. 0 means success. */
289 /* */
290 FT_LOCAL_DEF( FT_Error )
291 T1_Face_Init( FT_Stream stream,
292 T1_Face face,
293 FT_Int face_index,
294 FT_Int num_params,
295 FT_Parameter* params )
296 {
297 FT_Error error;
298 FT_Service_PsCMaps psnames;
299 PSAux_Service psaux;
300 T1_Font type1 = &face->type1;
301 PS_FontInfo info = &type1->font_info;
302
303 FT_UNUSED( num_params );
304 FT_UNUSED( params );
305 FT_UNUSED( stream );
306
307
308 face->root.num_faces = 1;
309
310 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
311 face->psnames = psnames;
312
313 face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
314 "psaux" );
315 psaux = (PSAux_Service)face->psaux;
316
317 face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
318 "pshinter" );
319
320 /* open the tokenizer; this will also check the font format */
321 error = T1_Open_Face( face );
322 if ( error )
323 goto Exit;
324
325 /* if we just wanted to check the format, leave successfully now */
326 if ( face_index < 0 )
327 goto Exit;
328
329 /* check the face index */
330 if ( face_index > 0 )
331 {
332 FT_ERROR(( "T1_Face_Init: invalid face index\n" ));
333 error = T1_Err_Invalid_Argument;
334 goto Exit;
335 }
336
337 /* now load the font program into the face object */
338
339 /* initialize the face object fields */
340
341 /* set up root face fields */
342 {
343 FT_Face root = (FT_Face)&face->root;
344
345
346 root->num_glyphs = type1->num_glyphs;
347 root->face_index = 0;
348
349 root->face_flags = FT_FACE_FLAG_SCALABLE |
350 FT_FACE_FLAG_HORIZONTAL |
351 FT_FACE_FLAG_GLYPH_NAMES |
352 FT_FACE_FLAG_HINTER;
353
354 if ( info->is_fixed_pitch )
355 root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
356
357 if ( face->blend )
358 root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
359
360 /* XXX: TODO -- add kerning with .afm support */
361
362
363 /* The following code to extract the family and the style is very */
364 /* simplistic and might get some things wrong. For a full-featured */
365 /* algorithm you might have a look at the whitepaper given at */
366 /* */
367 /* http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */
368
369 /* get style name -- be careful, some broken fonts only */
370 /* have a `/FontName' dictionary entry! */
371 root->family_name = info->family_name;
372 root->style_name = NULL;
373
374 if ( root->family_name )
375 {
376 char* full = info->full_name;
377 char* family = root->family_name;
378
379
380 if ( full )
381 {
382 FT_Bool the_same = TRUE;
383
384
385 while ( *full )
386 {
387 if ( *full == *family )
388 {
389 family++;
390 full++;
391 }
392 else
393 {
394 if ( *full == ' ' || *full == '-' )
395 full++;
396 else if ( *family == ' ' || *family == '-' )
397 family++;
398 else
399 {
400 the_same = FALSE;
401
402 if ( !*family )
403 root->style_name = full;
404 break;
405 }
406 }
407 }
408
409 if ( the_same )
410 root->style_name = (char *)"Regular";
411 }
412 }
413 else
414 {
415 /* do we have a `/FontName'? */
416 if ( type1->font_name )
417 root->family_name = type1->font_name;
418 }
419
420 if ( !root->style_name )
421 {
422 if ( info->weight )
423 root->style_name = info->weight;
424 else
425 /* assume `Regular' style because we don't know better */
426 root->style_name = (char *)"Regular";
427 }
428
429 /* compute style flags */
430 root->style_flags = 0;
431 if ( info->italic_angle )
432 root->style_flags |= FT_STYLE_FLAG_ITALIC;
433 if ( info->weight )
434 {
435 if ( !ft_strcmp( info->weight, "Bold" ) ||
436 !ft_strcmp( info->weight, "Black" ) )
437 root->style_flags |= FT_STYLE_FLAG_BOLD;
438 }
439
440 /* no embedded bitmap support */
441 root->num_fixed_sizes = 0;
442 root->available_sizes = 0;
443
444 root->bbox.xMin = type1->font_bbox.xMin >> 16;
445 root->bbox.yMin = type1->font_bbox.yMin >> 16;
446 /* no `U' suffix here to 0xFFFF! */
447 root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16;
448 root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16;
449
450 /* Set units_per_EM if we didn't set it in parse_font_matrix. */
451 if ( !root->units_per_EM )
452 root->units_per_EM = 1000;
453
454 root->ascender = (FT_Short)( root->bbox.yMax );
455 root->descender = (FT_Short)( root->bbox.yMin );
456
457 root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );
458 if ( root->height < root->ascender - root->descender )
459 root->height = (FT_Short)( root->ascender - root->descender );
460
461 /* now compute the maximum advance width */
462 root->max_advance_width =
463 (FT_Short)( root->bbox.xMax );
464 {
465 FT_Pos max_advance;
466
467
468 error = T1_Compute_Max_Advance( face, &max_advance );
469
470 /* in case of error, keep the standard width */
471 if ( !error )
472 root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance );
473 else
474 error = T1_Err_Ok; /* clear error */
475 }
476
477 root->max_advance_height = root->height;
478
479 root->underline_position = (FT_Short)info->underline_position;
480 root->underline_thickness = (FT_Short)info->underline_thickness;
481 }
482
483 {
484 FT_Face root = &face->root;
485
486
487 if ( psnames && psaux )
488 {
489 FT_CharMapRec charmap;
490 T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;
491 FT_CMap_Class clazz;
492
493
494 charmap.face = root;
495
496 /* first of all, try to synthesize a Unicode charmap */
497 charmap.platform_id = TT_PLATFORM_MICROSOFT;
498 charmap.encoding_id = TT_MS_ID_UNICODE_CS;
499 charmap.encoding = FT_ENCODING_UNICODE;
500
501 error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
502 if ( error && FT_Err_No_Unicode_Glyph_Name != error )
503 goto Exit;
504 error = FT_Err_Ok;
505
506 /* now, generate an Adobe Standard encoding when appropriate */
507 charmap.platform_id = TT_PLATFORM_ADOBE;
508 clazz = NULL;
509
510 switch ( type1->encoding_type )
511 {
512 case T1_ENCODING_TYPE_STANDARD:
513 charmap.encoding = FT_ENCODING_ADOBE_STANDARD;
514 charmap.encoding_id = TT_ADOBE_ID_STANDARD;
515 clazz = cmap_classes->standard;
516 break;
517
518 case T1_ENCODING_TYPE_EXPERT:
519 charmap.encoding = FT_ENCODING_ADOBE_EXPERT;
520 charmap.encoding_id = TT_ADOBE_ID_EXPERT;
521 clazz = cmap_classes->expert;
522 break;
523
524 case T1_ENCODING_TYPE_ARRAY:
525 charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;
526 charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
527 clazz = cmap_classes->custom;
528 break;
529
530 case T1_ENCODING_TYPE_ISOLATIN1:
531 charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;
532 charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
533 clazz = cmap_classes->unicode;
534 break;
535
536 default:
537 ;
538 }
539
540 if ( clazz )
541 error = FT_CMap_New( clazz, NULL, &charmap, NULL );
542
543 #if 0
544 /* Select default charmap */
545 if (root->num_charmaps)
546 root->charmap = root->charmaps[0];
547 #endif
548 }
549 }
550
551 Exit:
552 return error;
553 }
554
555
556 /*************************************************************************/
557 /* */
558 /* <Function> */
559 /* T1_Driver_Init */
560 /* */
561 /* <Description> */
562 /* Initializes a given Type 1 driver object. */
563 /* */
564 /* <Input> */
565 /* driver :: A handle to the target driver object. */
566 /* */
567 /* <Return> */
568 /* FreeType error code. 0 means success. */
569 /* */
570 FT_LOCAL_DEF( FT_Error )
571 T1_Driver_Init( T1_Driver driver )
572 {
573 FT_UNUSED( driver );
574
575 return T1_Err_Ok;
576 }
577
578
579 /*************************************************************************/
580 /* */
581 /* <Function> */
582 /* T1_Driver_Done */
583 /* */
584 /* <Description> */
585 /* Finalizes a given Type 1 driver. */
586 /* */
587 /* <Input> */
588 /* driver :: A handle to the target Type 1 driver. */
589 /* */
590 FT_LOCAL_DEF( void )
591 T1_Driver_Done( T1_Driver driver )
592 {
593 FT_UNUSED( driver );
594 }
595
596
597 /* END */