sdk-world v2026.11.05
PS2 SDK - world tier (copyleft-allowed, non-essential packages)
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t1driver.c
1/****************************************************************************
2 *
3 * t1driver.c
4 *
5 * Type 1 driver interface (body).
6 *
7 * Copyright (C) 1996-2025 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 "t1driver.h"
20#include "t1gload.h"
21#include "t1load.h"
22
23#include "t1errors.h"
24
25#ifndef T1_CONFIG_OPTION_NO_AFM
26#include "t1afm.h"
27#endif
28
29#include <freetype/internal/ftdebug.h>
30#include <freetype/internal/ftstream.h>
31#include <freetype/internal/fthash.h>
32#include <freetype/internal/ftpsprop.h>
33#include <freetype/ftdriver.h>
34
35#include <freetype/internal/services/svmm.h>
36#include <freetype/internal/services/svgldict.h>
37#include <freetype/internal/services/svfntfmt.h>
38#include <freetype/internal/services/svpostnm.h>
39#include <freetype/internal/services/svpscmap.h>
40#include <freetype/internal/services/svpsinfo.h>
41#include <freetype/internal/services/svprop.h>
42#include <freetype/internal/services/svkern.h>
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 t1driver
53
54 /*
55 * GLYPH DICT SERVICE
56 *
57 */
58
59 FT_CALLBACK_DEF( FT_Error )
60 t1_get_glyph_name( FT_Face face, /* T1_Face */
61 FT_UInt glyph_index,
62 FT_Pointer buffer,
63 FT_UInt buffer_max )
64 {
65 T1_Face t1face = (T1_Face)face;
66
67
68 FT_STRCPYN( buffer, t1face->type1.glyph_names[glyph_index], buffer_max );
69
70 return FT_Err_Ok;
71 }
72
73
74 FT_CALLBACK_DEF( FT_UInt )
75 t1_get_name_index( FT_Face face, /* T1_Face */
76 const FT_String* glyph_name )
77 {
78 T1_Face t1face = (T1_Face)face;
79 FT_Int i;
80
81
82 for ( i = 0; i < t1face->type1.num_glyphs; i++ )
83 {
84 FT_String* gname = t1face->type1.glyph_names[i];
85
86
87 if ( !ft_strcmp( glyph_name, gname ) )
88 return (FT_UInt)i;
89 }
90
91 return 0;
92 }
93
94
95 static const FT_Service_GlyphDictRec t1_service_glyph_dict =
96 {
97 t1_get_glyph_name, /* FT_GlyphDict_GetNameFunc get_name */
98 t1_get_name_index /* FT_GlyphDict_NameIndexFunc name_index */
99 };
100
101
102 /*
103 * POSTSCRIPT NAME SERVICE
104 *
105 */
106
107 static const char*
108 t1_get_ps_name( FT_Face face ) /* T1_Face */
109 {
110 T1_Face t1face = (T1_Face)face;
111
112
113 return (const char*) t1face->type1.font_name;
114 }
115
116
117 static const FT_Service_PsFontNameRec t1_service_ps_name =
118 {
119 (FT_PsName_GetFunc)t1_get_ps_name /* get_ps_font_name */
120 };
121
122
123 /*
124 * MULTIPLE MASTERS SERVICE
125 *
126 */
127
128#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
129 static const FT_Service_MultiMastersRec t1_service_multi_masters =
130 {
131 T1_Get_Multi_Master, /* FT_Get_MM_Func get_mm */
132 T1_Set_MM_Design, /* FT_Set_MM_Design_Func set_mm_design */
133 T1_Set_MM_Blend, /* FT_Set_MM_Blend_Func set_mm_blend */
134 T1_Get_MM_Blend, /* FT_Get_MM_Blend_Func get_mm_blend */
135 T1_Get_MM_Var, /* FT_Get_MM_Var_Func get_mm_var */
136 T1_Set_Var_Design, /* FT_Set_Var_Design_Func set_var_design */
137 T1_Get_Var_Design, /* FT_Get_Var_Design_Func get_var_design */
138 T1_Reset_MM_Blend, /* FT_Set_Named_Instance_Func set_named_instance */
139 NULL, /* FT_Get_Default_Named_Instance_Func get_default_named_instance */
140 T1_Set_MM_WeightVector,
141 /* FT_Set_MM_WeightVector_Func set_mm_weightvector */
142 T1_Get_MM_WeightVector,
143 /* FT_Get_MM_WeightVector_Func get_mm_weightvector */
144
145 NULL, /* FT_Construct_PS_Name_Func construct_ps_name */
146 NULL, /* FT_Var_Load_Delta_Set_Idx_Map_Func load_delta_set_idx_map */
147 NULL, /* FT_Var_Load_Item_Var_Store_Func load_item_variation_store */
148 NULL, /* FT_Var_Get_Item_Delta_Func get_item_delta */
149 NULL, /* FT_Var_Done_Item_Var_Store_Func done_item_variation_store */
150 NULL, /* FT_Var_Done_Delta_Set_Idx_Map_Func done_delta_set_index_map */
151 NULL, /* FT_Get_Var_Blend_Func get_var_blend */
152 T1_Done_Blend /* FT_Done_Blend_Func done_blend */
153 };
154#endif
155
156
157 /*
158 * POSTSCRIPT INFO SERVICE
159 *
160 */
161
162 static FT_Error
163 t1_ps_get_font_info( FT_Face face,
164 PS_FontInfoRec* afont_info )
165 {
166 *afont_info = ((T1_Face)face)->type1.font_info;
167
168 return FT_Err_Ok;
169 }
170
171
172 static FT_Error
173 t1_ps_get_font_extra( FT_Face face,
174 PS_FontExtraRec* afont_extra )
175 {
176 *afont_extra = ((T1_Face)face)->type1.font_extra;
177
178 return FT_Err_Ok;
179 }
180
181
182 static FT_Int
183 t1_ps_has_glyph_names( FT_Face face )
184 {
185 FT_UNUSED( face );
186
187 return 1;
188 }
189
190
191 static FT_Error
192 t1_ps_get_font_private( FT_Face face,
193 PS_PrivateRec* afont_private )
194 {
195 *afont_private = ((T1_Face)face)->type1.private_dict;
196
197 return FT_Err_Ok;
198 }
199
200
201 static FT_Long
202 t1_ps_get_font_value( FT_Face face,
203 PS_Dict_Keys key,
204 FT_UInt idx,
205 void *value,
206 FT_Long value_len_ )
207 {
208 FT_ULong retval = 0; /* always >= 1 if valid */
209 FT_ULong value_len = value_len_ < 0 ? 0 : (FT_ULong)value_len_;
210
211 T1_Face t1face = (T1_Face)face;
212 T1_Font type1 = &t1face->type1;
213
214
215 switch ( key )
216 {
217 case PS_DICT_FONT_TYPE:
218 retval = sizeof ( type1->font_type );
219 if ( value && value_len >= retval )
220 *((FT_Byte *)value) = type1->font_type;
221 break;
222
223 case PS_DICT_FONT_MATRIX:
224 if ( idx < sizeof ( type1->font_matrix ) /
225 sizeof ( type1->font_matrix.xx ) )
226 {
227 FT_Fixed val = 0;
228
229
230 retval = sizeof ( val );
231 if ( value && value_len >= retval )
232 {
233 switch ( idx )
234 {
235 case 0:
236 val = type1->font_matrix.xx;
237 break;
238 case 1:
239 val = type1->font_matrix.xy;
240 break;
241 case 2:
242 val = type1->font_matrix.yx;
243 break;
244 case 3:
245 val = type1->font_matrix.yy;
246 break;
247 }
248 *((FT_Fixed *)value) = val;
249 }
250 }
251 break;
252
253 case PS_DICT_FONT_BBOX:
254 if ( idx < sizeof ( type1->font_bbox ) /
255 sizeof ( type1->font_bbox.xMin ) )
256 {
257 FT_Fixed val = 0;
258
259
260 retval = sizeof ( val );
261 if ( value && value_len >= retval )
262 {
263 switch ( idx )
264 {
265 case 0:
266 val = type1->font_bbox.xMin;
267 break;
268 case 1:
269 val = type1->font_bbox.yMin;
270 break;
271 case 2:
272 val = type1->font_bbox.xMax;
273 break;
274 case 3:
275 val = type1->font_bbox.yMax;
276 break;
277 }
278 *((FT_Fixed *)value) = val;
279 }
280 }
281 break;
282
283 case PS_DICT_PAINT_TYPE:
284 retval = sizeof ( type1->paint_type );
285 if ( value && value_len >= retval )
286 *((FT_Byte *)value) = type1->paint_type;
287 break;
288
289 case PS_DICT_FONT_NAME:
290 if ( type1->font_name )
291 {
292 retval = ft_strlen( type1->font_name ) + 1;
293 if ( value && value_len >= retval )
294 ft_memcpy( value, (void *)( type1->font_name ), retval );
295 }
296 break;
297
298 case PS_DICT_UNIQUE_ID:
299 retval = sizeof ( type1->private_dict.unique_id );
300 if ( value && value_len >= retval )
301 *((FT_Int *)value) = type1->private_dict.unique_id;
302 break;
303
304 case PS_DICT_NUM_CHAR_STRINGS:
305 retval = sizeof ( type1->num_glyphs );
306 if ( value && value_len >= retval )
307 *((FT_Int *)value) = type1->num_glyphs;
308 break;
309
310 case PS_DICT_CHAR_STRING_KEY:
311 if ( idx < (FT_UInt)type1->num_glyphs )
312 {
313 retval = ft_strlen( type1->glyph_names[idx] ) + 1;
314 if ( value && value_len >= retval )
315 ft_memcpy( value, (void *)( type1->glyph_names[idx] ), retval );
316 }
317 break;
318
319 case PS_DICT_CHAR_STRING:
320 if ( idx < (FT_UInt)type1->num_glyphs )
321 {
322 retval = type1->charstrings_len[idx] + 1;
323 if ( value && value_len >= retval )
324 {
325 ft_memcpy( value, (void *)( type1->charstrings[idx] ),
326 retval - 1 );
327 ((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
328 }
329 }
330 break;
331
332 case PS_DICT_ENCODING_TYPE:
333 retval = sizeof ( type1->encoding_type );
334 if ( value && value_len >= retval )
335 *((T1_EncodingType *)value) = type1->encoding_type;
336 break;
337
338 case PS_DICT_ENCODING_ENTRY:
339 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY &&
340 idx < (FT_UInt)type1->encoding.num_chars )
341 {
342 retval = ft_strlen( type1->encoding.char_name[idx] ) + 1;
343 if ( value && value_len >= retval )
344 ft_memcpy( value, (void *)( type1->encoding.char_name[idx] ),
345 retval );
346 }
347 break;
348
349 case PS_DICT_NUM_SUBRS:
350 retval = sizeof ( type1->num_subrs );
351 if ( value && value_len >= retval )
352 *((FT_Int *)value) = type1->num_subrs;
353 break;
354
355 case PS_DICT_SUBR:
356 {
357 FT_Bool ok = 0;
358
359
360 if ( type1->subrs_hash )
361 {
362 /* convert subr index to array index */
363 size_t* val = ft_hash_num_lookup( (FT_Int)idx,
364 type1->subrs_hash );
365
366
367 if ( val )
368 {
369 idx = *val;
370 ok = 1;
371 }
372 }
373 else
374 {
375 if ( idx < (FT_UInt)type1->num_subrs )
376 ok = 1;
377 }
378
379 if ( ok && type1->subrs )
380 {
381 retval = type1->subrs_len[idx] + 1;
382 if ( value && value_len >= retval )
383 {
384 ft_memcpy( value, (void *)( type1->subrs[idx] ), retval - 1 );
385 ((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
386 }
387 }
388 }
389 break;
390
391 case PS_DICT_STD_HW:
392 retval = sizeof ( type1->private_dict.standard_width[0] );
393 if ( value && value_len >= retval )
394 *((FT_UShort *)value) = type1->private_dict.standard_width[0];
395 break;
396
397 case PS_DICT_STD_VW:
398 retval = sizeof ( type1->private_dict.standard_height[0] );
399 if ( value && value_len >= retval )
400 *((FT_UShort *)value) = type1->private_dict.standard_height[0];
401 break;
402
403 case PS_DICT_NUM_BLUE_VALUES:
404 retval = sizeof ( type1->private_dict.num_blue_values );
405 if ( value && value_len >= retval )
406 *((FT_Byte *)value) = type1->private_dict.num_blue_values;
407 break;
408
409 case PS_DICT_BLUE_VALUE:
410 if ( idx < type1->private_dict.num_blue_values )
411 {
412 retval = sizeof ( type1->private_dict.blue_values[idx] );
413 if ( value && value_len >= retval )
414 *((FT_Short *)value) = type1->private_dict.blue_values[idx];
415 }
416 break;
417
418 case PS_DICT_BLUE_SCALE:
419 retval = sizeof ( type1->private_dict.blue_scale );
420 if ( value && value_len >= retval )
421 *((FT_Fixed *)value) = type1->private_dict.blue_scale;
422 break;
423
424 case PS_DICT_BLUE_FUZZ:
425 retval = sizeof ( type1->private_dict.blue_fuzz );
426 if ( value && value_len >= retval )
427 *((FT_Int *)value) = type1->private_dict.blue_fuzz;
428 break;
429
430 case PS_DICT_BLUE_SHIFT:
431 retval = sizeof ( type1->private_dict.blue_shift );
432 if ( value && value_len >= retval )
433 *((FT_Int *)value) = type1->private_dict.blue_shift;
434 break;
435
436 case PS_DICT_NUM_OTHER_BLUES:
437 retval = sizeof ( type1->private_dict.num_other_blues );
438 if ( value && value_len >= retval )
439 *((FT_Byte *)value) = type1->private_dict.num_other_blues;
440 break;
441
442 case PS_DICT_OTHER_BLUE:
443 if ( idx < type1->private_dict.num_other_blues )
444 {
445 retval = sizeof ( type1->private_dict.other_blues[idx] );
446 if ( value && value_len >= retval )
447 *((FT_Short *)value) = type1->private_dict.other_blues[idx];
448 }
449 break;
450
451 case PS_DICT_NUM_FAMILY_BLUES:
452 retval = sizeof ( type1->private_dict.num_family_blues );
453 if ( value && value_len >= retval )
454 *((FT_Byte *)value) = type1->private_dict.num_family_blues;
455 break;
456
457 case PS_DICT_FAMILY_BLUE:
458 if ( idx < type1->private_dict.num_family_blues )
459 {
460 retval = sizeof ( type1->private_dict.family_blues[idx] );
461 if ( value && value_len >= retval )
462 *((FT_Short *)value) = type1->private_dict.family_blues[idx];
463 }
464 break;
465
466 case PS_DICT_NUM_FAMILY_OTHER_BLUES:
467 retval = sizeof ( type1->private_dict.num_family_other_blues );
468 if ( value && value_len >= retval )
469 *((FT_Byte *)value) = type1->private_dict.num_family_other_blues;
470 break;
471
472 case PS_DICT_FAMILY_OTHER_BLUE:
473 if ( idx < type1->private_dict.num_family_other_blues )
474 {
475 retval = sizeof ( type1->private_dict.family_other_blues[idx] );
476 if ( value && value_len >= retval )
477 *((FT_Short *)value) = type1->private_dict.family_other_blues[idx];
478 }
479 break;
480
481 case PS_DICT_NUM_STEM_SNAP_H:
482 retval = sizeof ( type1->private_dict.num_snap_widths );
483 if ( value && value_len >= retval )
484 *((FT_Byte *)value) = type1->private_dict.num_snap_widths;
485 break;
486
487 case PS_DICT_STEM_SNAP_H:
488 if ( idx < type1->private_dict.num_snap_widths )
489 {
490 retval = sizeof ( type1->private_dict.snap_widths[idx] );
491 if ( value && value_len >= retval )
492 *((FT_Short *)value) = type1->private_dict.snap_widths[idx];
493 }
494 break;
495
496 case PS_DICT_NUM_STEM_SNAP_V:
497 retval = sizeof ( type1->private_dict.num_snap_heights );
498 if ( value && value_len >= retval )
499 *((FT_Byte *)value) = type1->private_dict.num_snap_heights;
500 break;
501
502 case PS_DICT_STEM_SNAP_V:
503 if ( idx < type1->private_dict.num_snap_heights )
504 {
505 retval = sizeof ( type1->private_dict.snap_heights[idx] );
506 if ( value && value_len >= retval )
507 *((FT_Short *)value) = type1->private_dict.snap_heights[idx];
508 }
509 break;
510
511 case PS_DICT_RND_STEM_UP:
512 retval = sizeof ( type1->private_dict.round_stem_up );
513 if ( value && value_len >= retval )
514 *((FT_Bool *)value) = type1->private_dict.round_stem_up;
515 break;
516
517 case PS_DICT_FORCE_BOLD:
518 retval = sizeof ( type1->private_dict.force_bold );
519 if ( value && value_len >= retval )
520 *((FT_Bool *)value) = type1->private_dict.force_bold;
521 break;
522
523 case PS_DICT_MIN_FEATURE:
524 if ( idx < sizeof ( type1->private_dict.min_feature ) /
525 sizeof ( type1->private_dict.min_feature[0] ) )
526 {
527 retval = sizeof ( type1->private_dict.min_feature[idx] );
528 if ( value && value_len >= retval )
529 *((FT_Short *)value) = type1->private_dict.min_feature[idx];
530 }
531 break;
532
533 case PS_DICT_LEN_IV:
534 retval = sizeof ( type1->private_dict.lenIV );
535 if ( value && value_len >= retval )
536 *((FT_Int *)value) = type1->private_dict.lenIV;
537 break;
538
539 case PS_DICT_PASSWORD:
540 retval = sizeof ( type1->private_dict.password );
541 if ( value && value_len >= retval )
542 *((FT_Long *)value) = type1->private_dict.password;
543 break;
544
545 case PS_DICT_LANGUAGE_GROUP:
546 retval = sizeof ( type1->private_dict.language_group );
547 if ( value && value_len >= retval )
548 *((FT_Long *)value) = type1->private_dict.language_group;
549 break;
550
551 case PS_DICT_IS_FIXED_PITCH:
552 retval = sizeof ( type1->font_info.is_fixed_pitch );
553 if ( value && value_len >= retval )
554 *((FT_Bool *)value) = type1->font_info.is_fixed_pitch;
555 break;
556
557 case PS_DICT_UNDERLINE_POSITION:
558 retval = sizeof ( type1->font_info.underline_position );
559 if ( value && value_len >= retval )
560 *((FT_Short *)value) = type1->font_info.underline_position;
561 break;
562
563 case PS_DICT_UNDERLINE_THICKNESS:
564 retval = sizeof ( type1->font_info.underline_thickness );
565 if ( value && value_len >= retval )
566 *((FT_UShort *)value) = type1->font_info.underline_thickness;
567 break;
568
569 case PS_DICT_FS_TYPE:
570 retval = sizeof ( type1->font_extra.fs_type );
571 if ( value && value_len >= retval )
572 *((FT_UShort *)value) = type1->font_extra.fs_type;
573 break;
574
575 case PS_DICT_VERSION:
576 if ( type1->font_info.version )
577 {
578 retval = ft_strlen( type1->font_info.version ) + 1;
579 if ( value && value_len >= retval )
580 ft_memcpy( value, (void *)( type1->font_info.version ), retval );
581 }
582 break;
583
584 case PS_DICT_NOTICE:
585 if ( type1->font_info.notice )
586 {
587 retval = ft_strlen( type1->font_info.notice ) + 1;
588 if ( value && value_len >= retval )
589 ft_memcpy( value, (void *)( type1->font_info.notice ), retval );
590 }
591 break;
592
593 case PS_DICT_FULL_NAME:
594 if ( type1->font_info.full_name )
595 {
596 retval = ft_strlen( type1->font_info.full_name ) + 1;
597 if ( value && value_len >= retval )
598 ft_memcpy( value, (void *)( type1->font_info.full_name ), retval );
599 }
600 break;
601
602 case PS_DICT_FAMILY_NAME:
603 if ( type1->font_info.family_name )
604 {
605 retval = ft_strlen( type1->font_info.family_name ) + 1;
606 if ( value && value_len >= retval )
607 ft_memcpy( value, (void *)( type1->font_info.family_name ),
608 retval );
609 }
610 break;
611
612 case PS_DICT_WEIGHT:
613 if ( type1->font_info.weight )
614 {
615 retval = ft_strlen( type1->font_info.weight ) + 1;
616 if ( value && value_len >= retval )
617 ft_memcpy( value, (void *)( type1->font_info.weight ), retval );
618 }
619 break;
620
621 case PS_DICT_ITALIC_ANGLE:
622 retval = sizeof ( type1->font_info.italic_angle );
623 if ( value && value_len >= retval )
624 *((FT_Long *)value) = type1->font_info.italic_angle;
625 break;
626 }
627
628 return retval == 0 ? -1 : (FT_Long)retval;
629 }
630
631
632 static const FT_Service_PsInfoRec t1_service_ps_info =
633 {
634 t1_ps_get_font_info, /* PS_GetFontInfoFunc ps_get_font_info */
635 t1_ps_get_font_extra, /* PS_GetFontExtraFunc ps_get_font_extra */
636 t1_ps_has_glyph_names, /* PS_HasGlyphNamesFunc ps_has_glyph_names */
637 t1_ps_get_font_private, /* PS_GetFontPrivateFunc ps_get_font_private */
638 t1_ps_get_font_value, /* PS_GetFontValueFunc ps_get_font_value */
639 };
640
641
642#ifndef T1_CONFIG_OPTION_NO_AFM
643 static const FT_Service_KerningRec t1_service_kerning =
644 {
645 T1_Get_Track_Kerning, /* get_track */
646 };
647#endif
648
649
650 /*
651 * PROPERTY SERVICE
652 *
653 */
654
655 FT_DEFINE_SERVICE_PROPERTIESREC(
656 t1_service_properties,
657
658 ps_property_set, /* FT_Properties_SetFunc set_property */
659 ps_property_get /* FT_Properties_GetFunc get_property */
660 )
661
662 /*
663 * SERVICE LIST
664 *
665 */
666
667 static const FT_ServiceDescRec t1_services[] =
668 {
669 { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t1_service_ps_name },
670 { FT_SERVICE_ID_GLYPH_DICT, &t1_service_glyph_dict },
671 { FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TYPE_1 },
672 { FT_SERVICE_ID_POSTSCRIPT_INFO, &t1_service_ps_info },
673 { FT_SERVICE_ID_PROPERTIES, &t1_service_properties },
674
675#ifndef T1_CONFIG_OPTION_NO_AFM
676 { FT_SERVICE_ID_KERNING, &t1_service_kerning },
677#endif
678
679#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
680 { FT_SERVICE_ID_MULTI_MASTERS, &t1_service_multi_masters },
681#endif
682 { NULL, NULL }
683 };
684
685
686 FT_CALLBACK_DEF( FT_Module_Interface )
687 Get_Interface( FT_Module module,
688 const FT_String* t1_interface )
689 {
690 FT_UNUSED( module );
691
692 return ft_service_list_lookup( t1_services, t1_interface );
693 }
694
695
696#ifndef T1_CONFIG_OPTION_NO_AFM
697
698 /**************************************************************************
699 *
700 * @Function:
701 * Get_Kerning
702 *
703 * @Description:
704 * A driver method used to return the kerning vector between two
705 * glyphs of the same face.
706 *
707 * @Input:
708 * face ::
709 * A handle to the source face object.
710 *
711 * left_glyph ::
712 * The index of the left glyph in the kern pair.
713 *
714 * right_glyph ::
715 * The index of the right glyph in the kern pair.
716 *
717 * @Output:
718 * kerning ::
719 * The kerning vector. This is in font units for
720 * scalable formats, and in pixels for fixed-sizes
721 * formats.
722 *
723 * @Return:
724 * FreeType error code. 0 means success.
725 *
726 * @Note:
727 * Only horizontal layouts (left-to-right & right-to-left) are
728 * supported by this function. Other layouts, or more sophisticated
729 * kernings are out of scope of this method (the basic driver
730 * interface is meant to be simple).
731 *
732 * They can be implemented by format-specific interfaces.
733 */
734 static FT_Error
735 Get_Kerning( FT_Face t1face, /* T1_Face */
736 FT_UInt left_glyph,
737 FT_UInt right_glyph,
738 FT_Vector* kerning )
739 {
740 T1_Face face = (T1_Face)t1face;
741
742
743 kerning->x = 0;
744 kerning->y = 0;
745
746 if ( face->afm_data )
747 T1_Get_Kerning( (AFM_FontInfo)face->afm_data,
748 left_glyph,
749 right_glyph,
750 kerning );
751
752 return FT_Err_Ok;
753 }
754
755
756#endif /* T1_CONFIG_OPTION_NO_AFM */
757
758
759 FT_CALLBACK_TABLE_DEF
760 const FT_Driver_ClassRec t1_driver_class =
761 {
762 {
763 FT_MODULE_FONT_DRIVER |
764 FT_MODULE_DRIVER_SCALABLE |
765 FT_MODULE_DRIVER_HAS_HINTER,
766
767 sizeof ( PS_DriverRec ),
768
769 "type1",
770 0x10000L,
771 0x20000L,
772
773 NULL, /* module-specific interface */
774
775 T1_Driver_Init, /* FT_Module_Constructor module_init */
776 T1_Driver_Done, /* FT_Module_Destructor module_done */
777 Get_Interface, /* FT_Module_Requester get_interface */
778 },
779
780 sizeof ( T1_FaceRec ),
781 sizeof ( T1_SizeRec ),
782 sizeof ( T1_GlyphSlotRec ),
783
784 T1_Face_Init, /* FT_Face_InitFunc init_face */
785 T1_Face_Done, /* FT_Face_DoneFunc done_face */
786 T1_Size_Init, /* FT_Size_InitFunc init_size */
787 T1_Size_Done, /* FT_Size_DoneFunc done_size */
788 T1_GlyphSlot_Init, /* FT_Slot_InitFunc init_slot */
789 T1_GlyphSlot_Done, /* FT_Slot_DoneFunc done_slot */
790
791 T1_Load_Glyph, /* FT_Slot_LoadFunc load_glyph */
792
793#ifdef T1_CONFIG_OPTION_NO_AFM
794 NULL, /* FT_Face_GetKerningFunc get_kerning */
795 NULL, /* FT_Face_AttachFunc attach_file */
796#else
797 Get_Kerning, /* FT_Face_GetKerningFunc get_kerning */
798 T1_Read_Metrics, /* FT_Face_AttachFunc attach_file */
799#endif
800 T1_Get_Advances, /* FT_Face_GetAdvancesFunc get_advances */
801
802 T1_Size_Request, /* FT_Size_RequestFunc request_size */
803 NULL /* FT_Size_SelectFunc select_size */
804 };
805
806
807/* END */