cidobjs.c revision 5d146851dfa8d542a363dbcdc309e2471cc87cbe 
1/***************************************************************************/
2/*                                                                         */
3/*  cidobjs.c                                                              */
4/*                                                                         */
5/*    CID objects manager (body).                                          */
6/*                                                                         */
7/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 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 = 0;
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 CID_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
199
200    if ( face )
201    {
202      CID_FaceInfo  cid  = &face->cid;
203      PS_FontInfo   info = &cid->font_info;
204
205
206      memory = cidface->memory;
207
208      /* release subrs */
209      if ( face->subrs )
210      {
211        FT_Int  n;
212
213
214        for ( n = 0; n < cid->num_dicts; n++ )
215        {
216          CID_Subrs  subr = face->subrs + n;
217
218
219          if ( subr->code )
220          {
221            FT_FREE( subr->code[0] );
222            FT_FREE( subr->code );
223          }
224        }
225
226        FT_FREE( face->subrs );
227      }
228
229      /* release FontInfo strings */
230      FT_FREE( info->version );
231      FT_FREE( info->notice );
232      FT_FREE( info->full_name );
233      FT_FREE( info->family_name );
234      FT_FREE( info->weight );
235
236      /* release font dictionaries */
237      FT_FREE( cid->font_dicts );
238      cid->num_dicts = 0;
239
240      /* release other strings */
241      FT_FREE( cid->cid_font_name );
242      FT_FREE( cid->registry );
243      FT_FREE( cid->ordering );
244
245      cidface->family_name = 0;
246      cidface->style_name  = 0;
247
248      FT_FREE( face->binary_data );
249      FT_FREE( face->cid_stream );
250    }
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      face->psaux = psaux;
303    }
304
305    pshinter = (PSHinter_Service)face->pshinter;
306    if ( !pshinter )
307    {
308      pshinter = (PSHinter_Service)FT_Get_Module_Interface(
309                   FT_FACE_LIBRARY( face ), "pshinter" );
310
311      face->pshinter = pshinter;
312    }
313
314    /* open the tokenizer; this will also check the font format */
315    if ( FT_STREAM_SEEK( 0 ) )
316      goto Exit;
317
318    error = cid_face_open( face, face_index );
319    if ( error )
320      goto Exit;
321
322    /* if we just wanted to check the format, leave successfully now */
323    if ( face_index < 0 )
324      goto Exit;
325
326    /* check the face index */
327    if ( face_index != 0 )
328    {
329      FT_ERROR(( "cid_face_init: invalid face index\n" ));
330      error = CID_Err_Invalid_Argument;
331      goto Exit;
332    }
333
334    /* now load the font program into the face object */
335
336    /* initialize the face object fields */
337
338    /* set up root face fields */
339    {
340      CID_FaceInfo  cid  = &face->cid;
341      PS_FontInfo   info = &cid->font_info;
342
343
344      cidface->num_glyphs   = cid->cid_count;
345      cidface->num_charmaps = 0;
346
347      cidface->face_index = face_index;
348      cidface->face_flags = FT_FACE_FLAG_SCALABLE   | /* scalable outlines */
349                            FT_FACE_FLAG_HORIZONTAL | /* horizontal data   */
350                            FT_FACE_FLAG_HINTER;      /* has native hinter */
351
352      if ( info->is_fixed_pitch )
353        cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
354
355      /* XXX: TODO: add kerning with .afm support */
356
357      /* get style name -- be careful, some broken fonts only */
358      /* have a /FontName dictionary entry!                   */
359      cidface->family_name = info->family_name;
360      /* assume "Regular" style if we don't know better */
361      cidface->style_name = (char *)"Regular";
362      if ( cidface->family_name )
363      {
364        char*  full   = info->full_name;
365        char*  family = cidface->family_name;
366
367
368        if ( full )
369        {
370          while ( *full )
371          {
372            if ( *full == *family )
373            {
374              family++;
375              full++;
376            }
377            else
378            {
379              if ( *full == ' ' || *full == '-' )
380                full++;
381              else if ( *family == ' ' || *family == '-' )
382                family++;
383              else
384              {
385                if ( !*family )
386                  cidface->style_name = full;
387                break;
388              }
389            }
390          }
391        }
392      }
393      else
394      {
395        /* do we have a `/FontName'? */
396        if ( cid->cid_font_name )
397          cidface->family_name = cid->cid_font_name;
398      }
399
400      /* compute style flags */
401      cidface->style_flags = 0;
402      if ( info->italic_angle )
403        cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
404      if ( info->weight )
405      {
406        if ( !ft_strcmp( info->weight, "Bold"  ) ||
407             !ft_strcmp( info->weight, "Black" ) )
408          cidface->style_flags |= FT_STYLE_FLAG_BOLD;
409      }
410
411      /* no embedded bitmap support */
412      cidface->num_fixed_sizes = 0;
413      cidface->available_sizes = 0;
414
415      cidface->bbox.xMin =   cid->font_bbox.xMin             >> 16;
416      cidface->bbox.yMin =   cid->font_bbox.yMin             >> 16;
417      cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFFU ) >> 16;
418      cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFFU ) >> 16;
419
420      if ( !cidface->units_per_EM )
421        cidface->units_per_EM = 1000;
422
423      cidface->ascender  = (FT_Short)( cidface->bbox.yMax );
424      cidface->descender = (FT_Short)( cidface->bbox.yMin );
425
426      cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
427      if ( cidface->height < cidface->ascender - cidface->descender )
428        cidface->height = cidface->ascender - cidface->descender;
429
430      cidface->underline_position  = (FT_Short)info->underline_position;
431      cidface->underline_thickness = (FT_Short)info->underline_thickness;
432
433      cidface->internal->max_points   = 0;
434      cidface->internal->max_contours = 0;
435    }
436
437  Exit:
438    return error;
439  }
440
441
442  /*************************************************************************/
443  /*                                                                       */
444  /* <Function>                                                            */
445  /*    cid_driver_init                                                    */
446  /*                                                                       */
447  /* <Description>                                                         */
448  /*    Initializes a given CID driver object.                             */
449  /*                                                                       */
450  /* <Input>                                                               */
451  /*    driver :: A handle to the target driver object.                    */
452  /*                                                                       */
453  /* <Return>                                                              */
454  /*    FreeType error code.  0 means success.                             */
455  /*                                                                       */
456  FT_LOCAL_DEF( FT_Error )
457  cid_driver_init( FT_Module  driver )
458  {
459    FT_UNUSED( driver );
460
461    return CID_Err_Ok;
462  }
463
464
465  /*************************************************************************/
466  /*                                                                       */
467  /* <Function>                                                            */
468  /*    cid_driver_done                                                    */
469  /*                                                                       */
470  /* <Description>                                                         */
471  /*    Finalizes a given CID driver.                                      */
472  /*                                                                       */
473  /* <Input>                                                               */
474  /*    driver :: A handle to the target CID driver.                       */
475  /*                                                                       */
476  FT_LOCAL_DEF( void )
477  cid_driver_done( FT_Module  driver )
478  {
479    FT_UNUSED( driver );
480  }
481
482
483/* END */
484