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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 "../../include/ft2build.h" | |
20 #include "../../include/freetype/internal/ftcalc.h" | |
21 #include "../../include/freetype/internal/ftdebug.h" | |
22 #include "../../include/freetype/internal/ftstream.h" | |
23 #include "../../include/freetype/ttnameid.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 "../../include/freetype/internal/services/svpscmap.h" | |
35 #include "../../include/freetype/internal/psaux.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-mode
l.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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