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Viewing changes to libs/freetype2/freetype-2.5.3/src/cid/cidobjs.c

  • Committer: Adam Reviczky
  • Date: 2015-04-26 22:40:47 UTC
  • Revision ID: adam.reviczky@kclalumni.net-20150426224047-i2p26n3wqphupq6z
TeX Live 2015 import (rev. 37052)

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libs/freetype2/freetype-2.5.3/src/cid/cidobjs.c
1
 
/***************************************************************************/
2
 
/*                                                                         */
3
 
/*  cidobjs.c                                                              */
4
 
/*                                                                         */
5
 
/*    CID objects manager (body).                                          */
6
 
/*                                                                         */
7
 
/*  Copyright 1996-2006, 2008, 2010-2011, 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_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
 
 
30
 
#include "ciderrs.h"
31
 
 
32
 
 
33
 
  /*************************************************************************/
34
 
  /*                                                                       */
35
 
  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
36
 
  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
37
 
  /* messages during execution.                                            */
38
 
  /*                                                                       */
39
 
#undef  FT_COMPONENT
40
 
#define FT_COMPONENT  trace_cidobjs
41
 
 
42
 
 
43
 
  /*************************************************************************/
44
 
  /*                                                                       */
45
 
  /*                            SLOT  FUNCTIONS                            */
46
 
  /*                                                                       */
47
 
  /*************************************************************************/
48
 
 
49
 
  FT_LOCAL_DEF( void )
50
 
  cid_slot_done( FT_GlyphSlot  slot )
51
 
  {
52
 
    slot->internal->glyph_hints = 0;
53
 
  }
54
 
 
55
 
 
56
 
  FT_LOCAL_DEF( FT_Error )
57
 
  cid_slot_init( FT_GlyphSlot  slot )
58
 
  {
59
 
    CID_Face          face;
60
 
    PSHinter_Service  pshinter;
61
 
 
62
 
 
63
 
    face     = (CID_Face)slot->face;
64
 
    pshinter = (PSHinter_Service)face->pshinter;
65
 
 
66
 
    if ( pshinter )
67
 
    {
68
 
      FT_Module  module;
69
 
 
70
 
 
71
 
      module = FT_Get_Module( slot->face->driver->root.library,
72
 
                              "pshinter" );
73
 
      if ( module )
74
 
      {
75
 
        T1_Hints_Funcs  funcs;
76
 
 
77
 
 
78
 
        funcs = pshinter->get_t1_funcs( module );
79
 
        slot->internal->glyph_hints = (void*)funcs;
80
 
      }
81
 
    }
82
 
 
83
 
    return 0;
84
 
  }
85
 
 
86
 
 
87
 
  /*************************************************************************/
88
 
  /*                                                                       */
89
 
  /*                           SIZE  FUNCTIONS                             */
90
 
  /*                                                                       */
91
 
  /*************************************************************************/
92
 
 
93
 
 
94
 
  static PSH_Globals_Funcs
95
 
  cid_size_get_globals_funcs( CID_Size  size )
96
 
  {
97
 
    CID_Face          face     = (CID_Face)size->root.face;
98
 
    PSHinter_Service  pshinter = (PSHinter_Service)face->pshinter;
99
 
    FT_Module         module;
100
 
 
101
 
 
102
 
    module = FT_Get_Module( size->root.face->driver->root.library,
103
 
                            "pshinter" );
104
 
    return ( module && pshinter && pshinter->get_globals_funcs )
105
 
           ? pshinter->get_globals_funcs( module )
106
 
           : 0;
107
 
  }
108
 
 
109
 
 
110
 
  FT_LOCAL_DEF( void )
111
 
  cid_size_done( FT_Size  cidsize )         /* CID_Size */
112
 
  {
113
 
    CID_Size  size = (CID_Size)cidsize;
114
 
 
115
 
 
116
 
    if ( cidsize->internal )
117
 
    {
118
 
      PSH_Globals_Funcs  funcs;
119
 
 
120
 
 
121
 
      funcs = cid_size_get_globals_funcs( size );
122
 
      if ( funcs )
123
 
        funcs->destroy( (PSH_Globals)cidsize->internal );
124
 
 
125
 
      cidsize->internal = 0;
126
 
    }
127
 
  }
128
 
 
129
 
 
130
 
  FT_LOCAL_DEF( FT_Error )
131
 
  cid_size_init( FT_Size  cidsize )     /* CID_Size */
132
 
  {
133
 
    CID_Size           size  = (CID_Size)cidsize;
134
 
    FT_Error           error = FT_Err_Ok;
135
 
    PSH_Globals_Funcs  funcs = cid_size_get_globals_funcs( size );
136
 
 
137
 
 
138
 
    if ( funcs )
139
 
    {
140
 
      PSH_Globals   globals;
141
 
      CID_Face      face = (CID_Face)cidsize->face;
142
 
      CID_FaceDict  dict = face->cid.font_dicts + face->root.face_index;
143
 
      PS_Private    priv = &dict->private_dict;
144
 
 
145
 
 
146
 
      error = funcs->create( cidsize->face->memory, priv, &globals );
147
 
      if ( !error )
148
 
        cidsize->internal = (FT_Size_Internal)(void*)globals;
149
 
    }
150
 
 
151
 
    return error;
152
 
  }
153
 
 
154
 
 
155
 
  FT_LOCAL( FT_Error )
156
 
  cid_size_request( FT_Size          size,
157
 
                    FT_Size_Request  req )
158
 
  {
159
 
    PSH_Globals_Funcs  funcs;
160
 
 
161
 
 
162
 
    FT_Request_Metrics( size->face, req );
163
 
 
164
 
    funcs = cid_size_get_globals_funcs( (CID_Size)size );
165
 
 
166
 
    if ( funcs )
167
 
      funcs->set_scale( (PSH_Globals)size->internal,
168
 
                        size->metrics.x_scale,
169
 
                        size->metrics.y_scale,
170
 
                        0, 0 );
171
 
 
172
 
    return FT_Err_Ok;
173
 
  }
174
 
 
175
 
 
176
 
  /*************************************************************************/
177
 
  /*                                                                       */
178
 
  /*                           FACE  FUNCTIONS                             */
179
 
  /*                                                                       */
180
 
  /*************************************************************************/
181
 
 
182
 
  /*************************************************************************/
183
 
  /*                                                                       */
184
 
  /* <Function>                                                            */
185
 
  /*    cid_face_done                                                      */
186
 
  /*                                                                       */
187
 
  /* <Description>                                                         */
188
 
  /*    Finalizes a given face object.                                     */
189
 
  /*                                                                       */
190
 
  /* <Input>                                                               */
191
 
  /*    face :: A pointer to the face object to destroy.                   */
192
 
  /*                                                                       */
193
 
  FT_LOCAL_DEF( void )
194
 
  cid_face_done( FT_Face  cidface )         /* CID_Face */
195
 
  {
196
 
    CID_Face      face = (CID_Face)cidface;
197
 
    FT_Memory     memory;
198
 
    CID_FaceInfo  cid;
199
 
    PS_FontInfo   info;
200
 
 
201
 
 
202
 
    if ( !face )
203
 
      return;
204
 
 
205
 
    cid    = &face->cid;
206
 
    info   = &cid->font_info;
207
 
    memory = cidface->memory;
208
 
 
209
 
    /* release subrs */
210
 
    if ( face->subrs )
211
 
    {
212
 
      FT_Int  n;
213
 
 
214
 
 
215
 
      for ( n = 0; n < cid->num_dicts; n++ )
216
 
      {
217
 
        CID_Subrs  subr = face->subrs + n;
218
 
 
219
 
 
220
 
        if ( subr->code )
221
 
        {
222
 
          FT_FREE( subr->code[0] );
223
 
          FT_FREE( subr->code );
224
 
        }
225
 
      }
226
 
 
227
 
      FT_FREE( face->subrs );
228
 
    }
229
 
 
230
 
    /* release FontInfo strings */
231
 
    FT_FREE( info->version );
232
 
    FT_FREE( info->notice );
233
 
    FT_FREE( info->full_name );
234
 
    FT_FREE( info->family_name );
235
 
    FT_FREE( info->weight );
236
 
 
237
 
    /* release font dictionaries */
238
 
    FT_FREE( cid->font_dicts );
239
 
    cid->num_dicts = 0;
240
 
 
241
 
    /* release other strings */
242
 
    FT_FREE( cid->cid_font_name );
243
 
    FT_FREE( cid->registry );
244
 
    FT_FREE( cid->ordering );
245
 
 
246
 
    cidface->family_name = 0;
247
 
    cidface->style_name  = 0;
248
 
 
249
 
    FT_FREE( face->binary_data );
250
 
    FT_FREE( face->cid_stream );
251
 
  }
252
 
 
253
 
 
254
 
  /*************************************************************************/
255
 
  /*                                                                       */
256
 
  /* <Function>                                                            */
257
 
  /*    cid_face_init                                                      */
258
 
  /*                                                                       */
259
 
  /* <Description>                                                         */
260
 
  /*    Initializes a given CID face object.                               */
261
 
  /*                                                                       */
262
 
  /* <Input>                                                               */
263
 
  /*    stream     :: The source font stream.                              */
264
 
  /*                                                                       */
265
 
  /*    face_index :: The index of the font face in the resource.          */
266
 
  /*                                                                       */
267
 
  /*    num_params :: Number of additional generic parameters.  Ignored.   */
268
 
  /*                                                                       */
269
 
  /*    params     :: Additional generic parameters.  Ignored.             */
270
 
  /*                                                                       */
271
 
  /* <InOut>                                                               */
272
 
  /*    face       :: The newly built face object.                         */
273
 
  /*                                                                       */
274
 
  /* <Return>                                                              */
275
 
  /*    FreeType error code.  0 means success.                             */
276
 
  /*                                                                       */
277
 
  FT_LOCAL_DEF( FT_Error )
278
 
  cid_face_init( FT_Stream      stream,
279
 
                 FT_Face        cidface,        /* CID_Face */
280
 
                 FT_Int         face_index,
281
 
                 FT_Int         num_params,
282
 
                 FT_Parameter*  params )
283
 
  {
284
 
    CID_Face          face = (CID_Face)cidface;
285
 
    FT_Error          error;
286
 
    PSAux_Service     psaux;
287
 
    PSHinter_Service  pshinter;
288
 
 
289
 
    FT_UNUSED( num_params );
290
 
    FT_UNUSED( params );
291
 
    FT_UNUSED( stream );
292
 
 
293
 
 
294
 
    cidface->num_faces = 1;
295
 
 
296
 
    psaux = (PSAux_Service)face->psaux;
297
 
    if ( !psaux )
298
 
    {
299
 
      psaux = (PSAux_Service)FT_Get_Module_Interface(
300
 
                FT_FACE_LIBRARY( face ), "psaux" );
301
 
 
302
 
      if ( !psaux )
303
 
      {
304
 
        FT_ERROR(( "cid_face_init: cannot access `psaux' module\n" ));
305
 
        error = FT_THROW( Missing_Module );
306
 
        goto Exit;
307
 
      }
308
 
 
309
 
      face->psaux = psaux;
310
 
    }
311
 
 
312
 
    pshinter = (PSHinter_Service)face->pshinter;
313
 
    if ( !pshinter )
314
 
    {
315
 
      pshinter = (PSHinter_Service)FT_Get_Module_Interface(
316
 
                   FT_FACE_LIBRARY( face ), "pshinter" );
317
 
 
318
 
      face->pshinter = pshinter;
319
 
    }
320
 
 
321
 
    FT_TRACE2(( "CID driver\n" ));
322
 
 
323
 
    /* open the tokenizer; this will also check the font format */
324
 
    if ( FT_STREAM_SEEK( 0 ) )
325
 
      goto Exit;
326
 
 
327
 
    error = cid_face_open( face, face_index );
328
 
    if ( error )
329
 
      goto Exit;
330
 
 
331
 
    /* if we just wanted to check the format, leave successfully now */
332
 
    if ( face_index < 0 )
333
 
      goto Exit;
334
 
 
335
 
    /* check the face index */
336
 
    /* XXX: handle CID fonts with more than a single face */
337
 
    if ( face_index != 0 )
338
 
    {
339
 
      FT_ERROR(( "cid_face_init: invalid face index\n" ));
340
 
      error = FT_THROW( Invalid_Argument );
341
 
      goto Exit;
342
 
    }
343
 
 
344
 
    /* now load the font program into the face object */
345
 
 
346
 
    /* initialize the face object fields */
347
 
 
348
 
    /* set up root face fields */
349
 
    {
350
 
      CID_FaceInfo  cid  = &face->cid;
351
 
      PS_FontInfo   info = &cid->font_info;
352
 
 
353
 
 
354
 
      cidface->num_glyphs   = cid->cid_count;
355
 
      cidface->num_charmaps = 0;
356
 
 
357
 
      cidface->face_index = face_index;
358
 
 
359
 
      cidface->face_flags |= FT_FACE_FLAG_SCALABLE   | /* scalable outlines */
360
 
                             FT_FACE_FLAG_HORIZONTAL | /* horizontal data   */
361
 
                             FT_FACE_FLAG_HINTER;      /* has native hinter */
362
 
 
363
 
      if ( info->is_fixed_pitch )
364
 
        cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
365
 
 
366
 
      /* XXX: TODO: add kerning with .afm support */
367
 
 
368
 
      /* get style name -- be careful, some broken fonts only */
369
 
      /* have a /FontName dictionary entry!                   */
370
 
      cidface->family_name = info->family_name;
371
 
      /* assume "Regular" style if we don't know better */
372
 
      cidface->style_name = (char *)"Regular";
373
 
      if ( cidface->family_name )
374
 
      {
375
 
        char*  full   = info->full_name;
376
 
        char*  family = cidface->family_name;
377
 
 
378
 
 
379
 
        if ( full )
380
 
        {
381
 
          while ( *full )
382
 
          {
383
 
            if ( *full == *family )
384
 
            {
385
 
              family++;
386
 
              full++;
387
 
            }
388
 
            else
389
 
            {
390
 
              if ( *full == ' ' || *full == '-' )
391
 
                full++;
392
 
              else if ( *family == ' ' || *family == '-' )
393
 
                family++;
394
 
              else
395
 
              {
396
 
                if ( !*family )
397
 
                  cidface->style_name = full;
398
 
                break;
399
 
              }
400
 
            }
401
 
          }
402
 
        }
403
 
      }
404
 
      else
405
 
      {
406
 
        /* do we have a `/FontName'? */
407
 
        if ( cid->cid_font_name )
408
 
          cidface->family_name = cid->cid_font_name;
409
 
      }
410
 
 
411
 
      /* compute style flags */
412
 
      cidface->style_flags = 0;
413
 
      if ( info->italic_angle )
414
 
        cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
415
 
      if ( info->weight )
416
 
      {
417
 
        if ( !ft_strcmp( info->weight, "Bold"  ) ||
418
 
             !ft_strcmp( info->weight, "Black" ) )
419
 
          cidface->style_flags |= FT_STYLE_FLAG_BOLD;
420
 
      }
421
 
 
422
 
      /* no embedded bitmap support */
423
 
      cidface->num_fixed_sizes = 0;
424
 
      cidface->available_sizes = 0;
425
 
 
426
 
      cidface->bbox.xMin =   cid->font_bbox.xMin            >> 16;
427
 
      cidface->bbox.yMin =   cid->font_bbox.yMin            >> 16;
428
 
      /* no `U' suffix here to 0xFFFF! */
429
 
      cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16;
430
 
      cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16;
431
 
 
432
 
      if ( !cidface->units_per_EM )
433
 
        cidface->units_per_EM = 1000;
434
 
 
435
 
      cidface->ascender  = (FT_Short)( cidface->bbox.yMax );
436
 
      cidface->descender = (FT_Short)( cidface->bbox.yMin );
437
 
 
438
 
      cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
439
 
      if ( cidface->height < cidface->ascender - cidface->descender )
440
 
        cidface->height = (FT_Short)( cidface->ascender - cidface->descender );
441
 
 
442
 
      cidface->underline_position  = (FT_Short)info->underline_position;
443
 
      cidface->underline_thickness = (FT_Short)info->underline_thickness;
444
 
    }
445
 
 
446
 
  Exit:
447
 
    return error;
448
 
  }
449
 
 
450
 
 
451
 
  /*************************************************************************/
452
 
  /*                                                                       */
453
 
  /* <Function>                                                            */
454
 
  /*    cid_driver_init                                                    */
455
 
  /*                                                                       */
456
 
  /* <Description>                                                         */
457
 
  /*    Initializes a given CID driver object.                             */
458
 
  /*                                                                       */
459
 
  /* <Input>                                                               */
460
 
  /*    driver :: A handle to the target driver object.                    */
461
 
  /*                                                                       */
462
 
  /* <Return>                                                              */
463
 
  /*    FreeType error code.  0 means success.                             */
464
 
  /*                                                                       */
465
 
  FT_LOCAL_DEF( FT_Error )
466
 
  cid_driver_init( FT_Module  driver )
467
 
  {
468
 
    FT_UNUSED( driver );
469
 
 
470
 
    return FT_Err_Ok;
471
 
  }
472
 
 
473
 
 
474
 
  /*************************************************************************/
475
 
  /*                                                                       */
476
 
  /* <Function>                                                            */
477
 
  /*    cid_driver_done                                                    */
478
 
  /*                                                                       */
479
 
  /* <Description>                                                         */
480
 
  /*    Finalizes a given CID driver.                                      */
481
 
  /*                                                                       */
482
 
  /* <Input>                                                               */
483
 
  /*    driver :: A handle to the target CID driver.                       */
484
 
  /*                                                                       */
485
 
  FT_LOCAL_DEF( void )
486
 
  cid_driver_done( FT_Module  driver )
487
 
  {
488
 
    FT_UNUSED( driver );
489
 
  }
490
 
 
491
 
 
492
 
/* END */