1 /***************************************************************************/
2 /* */
3 /* cidobjs.c */
4 /* */
5 /* CID objects manager (body). */
6 /* */
7 /* Copyright 1996-2018 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_DEBUG_H
21 #include FT_INTERNAL_STREAM_H
22
23 #include "cidgload.h"
24 #include "cidload.h"
25
26 #include FT_SERVICE_POSTSCRIPT_CMAPS_H
27 #include FT_INTERNAL_POSTSCRIPT_AUX_H
28 #include FT_INTERNAL_POSTSCRIPT_HINTS_H
29 #include FT_DRIVER_H
30
31 #include "ciderrs.h"
32
33
34 /*************************************************************************/
35 /* */
36 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
37 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
38 /* messages during execution. */
39 /* */
40 #undef FT_COMPONENT
41 #define FT_COMPONENT trace_cidobjs
42
43
44 /*************************************************************************/
45 /* */
46 /* SLOT FUNCTIONS */
47 /* */
48 /*************************************************************************/
49
50 FT_LOCAL_DEF( void )
51 cid_slot_done( FT_GlyphSlot slot )
52 {
53 slot->internal->glyph_hints = NULL;
54 }
55
56
57 FT_LOCAL_DEF( FT_Error )
58 cid_slot_init( FT_GlyphSlot slot )
59 {
60 CID_Face face;
61 PSHinter_Service pshinter;
62
63
64 face = (CID_Face)slot->face;
65 pshinter = (PSHinter_Service)face->pshinter;
66
67 if ( pshinter )
68 {
69 FT_Module module;
70
71
72 module = FT_Get_Module( slot->face->driver->root.library,
73 "pshinter" );
74 if ( module )
75 {
76 T1_Hints_Funcs funcs;
77
78
79 funcs = pshinter->get_t1_funcs( module );
80 slot->internal->glyph_hints = (void*)funcs;
81 }
82 }
83
84 return 0;
85 }
86
87
88 /*************************************************************************/
89 /* */
90 /* SIZE FUNCTIONS */
91 /* */
92 /*************************************************************************/
93
94
95 static PSH_Globals_Funcs
96 cid_size_get_globals_funcs( CID_Size size )
97 {
98 CID_Face face = (CID_Face)size->root.face;
99 PSHinter_Service pshinter = (PSHinter_Service)face->pshinter;
100 FT_Module module;
101
102
103 module = FT_Get_Module( size->root.face->driver->root.library,
104 "pshinter" );
105 return ( module && pshinter && pshinter->get_globals_funcs )
106 ? pshinter->get_globals_funcs( module )
107 : 0;
108 }
109
110
111 FT_LOCAL_DEF( void )
112 cid_size_done( FT_Size cidsize ) /* CID_Size */
113 {
114 CID_Size size = (CID_Size)cidsize;
115
116
117 if ( cidsize->internal->module_data )
118 {
119 PSH_Globals_Funcs funcs;
120
121
122 funcs = cid_size_get_globals_funcs( size );
123 if ( funcs )
124 funcs->destroy( (PSH_Globals)cidsize->internal->module_data );
125
126 cidsize->internal->module_data = NULL;
127 }
128 }
129
130
131 FT_LOCAL_DEF( FT_Error )
132 cid_size_init( FT_Size cidsize ) /* CID_Size */
133 {
134 CID_Size size = (CID_Size)cidsize;
135 FT_Error error = FT_Err_Ok;
136 PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size );
137
138
139 if ( funcs )
140 {
141 PSH_Globals globals;
142 CID_Face face = (CID_Face)cidsize->face;
143 CID_FaceDict dict = face->cid.font_dicts + face->root.face_index;
144 PS_Private priv = &dict->private_dict;
145
146
147 error = funcs->create( cidsize->face->memory, priv, &globals );
148 if ( !error )
149 cidsize->internal->module_data = globals;
150 }
151
152 return error;
153 }
154
155
156 FT_LOCAL( FT_Error )
157 cid_size_request( FT_Size size,
158 FT_Size_Request req )
159 {
160 PSH_Globals_Funcs funcs;
161
162
163 FT_Request_Metrics( size->face, req );
164
165 funcs = cid_size_get_globals_funcs( (CID_Size)size );
166
167 if ( funcs )
168 funcs->set_scale( (PSH_Globals)size->internal->module_data,
169 size->metrics.x_scale,
170 size->metrics.y_scale,
171 0, 0 );
172
173 return FT_Err_Ok;
174 }
175
176
177 /*************************************************************************/
178 /* */
179 /* FACE FUNCTIONS */
180 /* */
181 /*************************************************************************/
182
183 /*************************************************************************/
184 /* */
185 /* <Function> */
186 /* cid_face_done */
187 /* */
188 /* <Description> */
189 /* Finalizes a given face object. */
190 /* */
191 /* <Input> */
192 /* face :: A pointer to the face object to destroy. */
193 /* */
194 FT_LOCAL_DEF( void )
195 cid_face_done( FT_Face cidface ) /* CID_Face */
196 {
197 CID_Face face = (CID_Face)cidface;
198 FT_Memory memory;
199 CID_FaceInfo cid;
200 PS_FontInfo info;
201
202
203 if ( !face )
204 return;
205
206 cid = &face->cid;
207 info = &cid->font_info;
208 memory = cidface->memory;
209
210 /* release subrs */
211 if ( face->subrs )
212 {
213 FT_Int n;
214
215
216 for ( n = 0; n < cid->num_dicts; n++ )
217 {
218 CID_Subrs subr = face->subrs + n;
219
220
221 if ( subr->code )
222 {
223 FT_FREE( subr->code[0] );
224 FT_FREE( subr->code );
225 }
226 }
227
228 FT_FREE( face->subrs );
229 }
230
231 /* release FontInfo strings */
232 FT_FREE( info->version );
233 FT_FREE( info->notice );
234 FT_FREE( info->full_name );
235 FT_FREE( info->family_name );
236 FT_FREE( info->weight );
237
238 /* release font dictionaries */
239 FT_FREE( cid->font_dicts );
240 cid->num_dicts = 0;
241
242 /* release other strings */
243 FT_FREE( cid->cid_font_name );
244 FT_FREE( cid->registry );
245 FT_FREE( cid->ordering );
246
247 cidface->family_name = NULL;
248 cidface->style_name = NULL;
249
250 FT_FREE( face->binary_data );
251 FT_FREE( face->cid_stream );
252 }
253
254
255 /*************************************************************************/
256 /* */
257 /* <Function> */
258 /* cid_face_init */
259 /* */
260 /* <Description> */
261 /* Initializes a given CID face object. */
262 /* */
263 /* <Input> */
264 /* stream :: The source font stream. */
265 /* */
266 /* face_index :: The index of the font face in the resource. */
267 /* */
268 /* num_params :: Number of additional generic parameters. Ignored. */
269 /* */
270 /* params :: Additional generic parameters. Ignored. */
271 /* */
272 /* <InOut> */
273 /* face :: The newly built face object. */
274 /* */
275 /* <Return> */
276 /* FreeType error code. 0 means success. */
277 /* */
278 FT_LOCAL_DEF( FT_Error )
279 cid_face_init( FT_Stream stream,
280 FT_Face cidface, /* CID_Face */
281 FT_Int face_index,
282 FT_Int num_params,
283 FT_Parameter* params )
284 {
285 CID_Face face = (CID_Face)cidface;
286 FT_Error error;
287 PSAux_Service psaux;
288 PSHinter_Service pshinter;
289
290 FT_UNUSED( num_params );
291 FT_UNUSED( params );
292 FT_UNUSED( stream );
293
294
295 cidface->num_faces = 1;
296
297 psaux = (PSAux_Service)face->psaux;
298 if ( !psaux )
299 {
300 psaux = (PSAux_Service)FT_Get_Module_Interface(
301 FT_FACE_LIBRARY( face ), "psaux" );
302
303 if ( !psaux )
304 {
305 FT_ERROR(( "cid_face_init: cannot access `psaux' module\n" ));
306 error = FT_THROW( Missing_Module );
307 goto Exit;
308 }
309
310 face->psaux = psaux;
311 }
312
313 pshinter = (PSHinter_Service)face->pshinter;
314 if ( !pshinter )
315 {
316 pshinter = (PSHinter_Service)FT_Get_Module_Interface(
317 FT_FACE_LIBRARY( face ), "pshinter" );
318
319 face->pshinter = pshinter;
320 }
321
322 FT_TRACE2(( "CID driver\n" ));
323
324 /* open the tokenizer; this will also check the font format */
325 if ( FT_STREAM_SEEK( 0 ) )
326 goto Exit;
327
328 error = cid_face_open( face, face_index );
329 if ( error )
330 goto Exit;
331
332 /* if we just wanted to check the format, leave successfully now */
333 if ( face_index < 0 )
334 goto Exit;
335
336 /* check the face index */
337 /* XXX: handle CID fonts with more than a single face */
338 if ( ( face_index & 0xFFFF ) != 0 )
339 {
340 FT_ERROR(( "cid_face_init: invalid face index\n" ));
341 error = FT_THROW( Invalid_Argument );
342 goto Exit;
343 }
344
345 /* now load the font program into the face object */
346
347 /* initialize the face object fields */
348
349 /* set up root face fields */
350 {
351 CID_FaceInfo cid = &face->cid;
352 PS_FontInfo info = &cid->font_info;
353
354
355 cidface->num_glyphs = (FT_Long)cid->cid_count;
356 cidface->num_charmaps = 0;
357
358 cidface->face_index = face_index & 0xFFFF;
359
360 cidface->face_flags |= FT_FACE_FLAG_SCALABLE | /* scalable outlines */
361 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */
362 FT_FACE_FLAG_HINTER; /* has native hinter */
363
364 if ( info->is_fixed_pitch )
365 cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
366
367 /* XXX: TODO: add kerning with .afm support */
368
369 /* get style name -- be careful, some broken fonts only */
370 /* have a /FontName dictionary entry! */
371 cidface->family_name = info->family_name;
372 /* assume "Regular" style if we don't know better */
373 cidface->style_name = (char *)"Regular";
374 if ( cidface->family_name )
375 {
376 char* full = info->full_name;
377 char* family = cidface->family_name;
378
379
380 if ( full )
381 {
382 while ( *full )
383 {
384 if ( *full == *family )
385 {
386 family++;
387 full++;
388 }
389 else
390 {
391 if ( *full == ' ' || *full == '-' )
392 full++;
393 else if ( *family == ' ' || *family == '-' )
394 family++;
395 else
396 {
397 if ( !*family )
398 cidface->style_name = full;
399 break;
400 }
401 }
402 }
403 }
404 }
405 else
406 {
407 /* do we have a `/FontName'? */
408 if ( cid->cid_font_name )
409 cidface->family_name = cid->cid_font_name;
410 }
411
412 /* compute style flags */
413 cidface->style_flags = 0;
414 if ( info->italic_angle )
415 cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
416 if ( info->weight )
417 {
418 if ( !ft_strcmp( info->weight, "Bold" ) ||
419 !ft_strcmp( info->weight, "Black" ) )
420 cidface->style_flags |= FT_STYLE_FLAG_BOLD;
421 }
422
423 /* no embedded bitmap support */
424 cidface->num_fixed_sizes = 0;
425 cidface->available_sizes = NULL;
426
427 cidface->bbox.xMin = cid->font_bbox.xMin >> 16;
428 cidface->bbox.yMin = cid->font_bbox.yMin >> 16;
429 /* no `U' suffix here to 0xFFFF! */
430 cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16;
431 cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16;
432
433 if ( !cidface->units_per_EM )
434 cidface->units_per_EM = 1000;
435
436 cidface->ascender = (FT_Short)( cidface->bbox.yMax );
437 cidface->descender = (FT_Short)( cidface->bbox.yMin );
438
439 cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
440 if ( cidface->height < cidface->ascender - cidface->descender )
441 cidface->height = (FT_Short)( cidface->ascender - cidface->descender );
442
443 cidface->underline_position = (FT_Short)info->underline_position;
444 cidface->underline_thickness = (FT_Short)info->underline_thickness;
445 }
446
447 Exit:
448 return error;
449 }
450
451
452 /*************************************************************************/
453 /* */
454 /* <Function> */
455 /* cid_driver_init */
456 /* */
457 /* <Description> */
458 /* Initializes a given CID driver object. */
459 /* */
460 /* <Input> */
461 /* driver :: A handle to the target driver object. */
462 /* */
463 /* <Return> */
464 /* FreeType error code. 0 means success. */
465 /* */
466 FT_LOCAL_DEF( FT_Error )
467 cid_driver_init( FT_Module module )
468 {
469 PS_Driver driver = (PS_Driver)module;
470
471 FT_UInt32 seed;
472
473
474 /* set default property values, cf. `ftt1drv.h' */
475 #ifdef T1_CONFIG_OPTION_OLD_ENGINE
476 driver->hinting_engine = FT_HINTING_FREETYPE;
477 #else
478 driver->hinting_engine = FT_HINTING_ADOBE;
479 #endif
480
481 driver->no_stem_darkening = TRUE;
482
483 driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1;
484 driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1;
485 driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2;
486 driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2;
487 driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3;
488 driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3;
489 driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4;
490 driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4;
491
492 /* compute random seed from some memory addresses */
493 seed = (FT_UInt32)( (FT_Offset)(char*)&seed ^
494 (FT_Offset)(char*)&module ^
495 (FT_Offset)(char*)module->memory );
496 seed = seed ^ ( seed >> 10 ) ^ ( seed >> 20 );
497
498 driver->random_seed = (FT_Int32)seed;
499 if ( driver->random_seed < 0 )
500 driver->random_seed = -driver->random_seed;
501 else if ( driver->random_seed == 0 )
502 driver->random_seed = 123456789;
503
504 return FT_Err_Ok;
505 }
506
507
508 /*************************************************************************/
509 /* */
510 /* <Function> */
511 /* cid_driver_done */
512 /* */
513 /* <Description> */
514 /* Finalizes a given CID driver. */
515 /* */
516 /* <Input> */
517 /* driver :: A handle to the target CID driver. */
518 /* */
519 FT_LOCAL_DEF( void )
520 cid_driver_done( FT_Module driver )
521 {
522 FT_UNUSED( driver );
523 }
524
525
526 /* END */