1 /***************************************************************************/
5 /* OpenType font driver implementation (body). */
7 /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
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. */
16 /***************************************************************************/
20 #include FT_FREETYPE_H
21 #include FT_INTERNAL_DEBUG_H
22 #include FT_INTERNAL_STREAM_H
23 #include FT_INTERNAL_SFNT_H
24 #include FT_TRUETYPE_IDS_H
25 #include FT_SERVICE_POSTSCRIPT_CMAPS_H
26 #include FT_SERVICE_POSTSCRIPT_INFO_H
27 #include FT_SERVICE_TT_CMAP_H
36 #include FT_SERVICE_XFREE86_NAME_H
37 #include FT_SERVICE_GLYPH_DICT_H
39 /*************************************************************************/
41 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
42 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
43 /* messages during execution. */
46 #define FT_COMPONENT trace_cffdriver
49 /*************************************************************************/
50 /*************************************************************************/
51 /*************************************************************************/
57 /*************************************************************************/
58 /*************************************************************************/
59 /*************************************************************************/
63 #define PAIR_TAG( left, right ) ( ( (FT_ULong)left << 16 ) | \
67 /*************************************************************************/
73 /* A driver method used to return the kerning vector between two */
74 /* glyphs of the same face. */
77 /* face :: A handle to the source face object. */
79 /* left_glyph :: The index of the left glyph in the kern pair. */
81 /* right_glyph :: The index of the right glyph in the kern pair. */
84 /* kerning :: The kerning vector. This is in font units for */
85 /* scalable formats, and in pixels for fixed-sizes */
89 /* FreeType error code. 0 means success. */
92 /* Only horizontal layouts (left-to-right & right-to-left) are */
93 /* supported by this function. Other layouts, or more sophisticated */
94 /* kernings, are out of scope of this method (the basic driver */
95 /* interface is meant to be simple). */
97 /* They can be implemented by format-specific interfaces. */
99 FT_CALLBACK_DEF( FT_Error
)
100 cff_get_kerning( FT_Face ttface
, /* TT_Face */
105 TT_Face face
= (TT_Face
)ttface
;
106 SFNT_Service sfnt
= (SFNT_Service
)face
->sfnt
;
113 kerning
->x
= sfnt
->get_kerning( face
, left_glyph
, right_glyph
);
122 /*************************************************************************/
128 /* A driver method used to load a glyph within a given glyph slot. */
131 /* slot :: A handle to the target slot object where the glyph */
132 /* will be loaded. */
134 /* size :: A handle to the source face size at which the glyph */
135 /* must be scaled, loaded, etc. */
137 /* glyph_index :: The index of the glyph in the font file. */
139 /* load_flags :: A flag indicating what to load for this glyph. The */
140 /* FT_LOAD_??? constants can be used to control the */
141 /* glyph loading process (e.g., whether the outline */
142 /* should be scaled, whether to load bitmaps or not, */
143 /* whether to hint the outline, etc). */
146 /* FreeType error code. 0 means success. */
148 FT_CALLBACK_DEF( FT_Error
)
149 Load_Glyph( FT_GlyphSlot cffslot
, /* CFF_GlyphSlot */
150 FT_Size cffsize
, /* CFF_Size */
152 FT_Int32 load_flags
)
155 CFF_GlyphSlot slot
= (CFF_GlyphSlot
)cffslot
;
156 CFF_Size size
= (CFF_Size
)cffsize
;
160 return CFF_Err_Invalid_Slot_Handle
;
162 /* check whether we want a scaled outline or bitmap */
164 load_flags
|= FT_LOAD_NO_SCALE
| FT_LOAD_NO_HINTING
;
166 if ( load_flags
& FT_LOAD_NO_SCALE
)
169 /* reset the size object if necessary */
172 /* these two objects must have the same parent */
173 if ( cffsize
->face
!= cffslot
->face
)
174 return CFF_Err_Invalid_Face_Handle
;
177 /* now load the glyph outline if necessary */
178 error
= cff_slot_load( slot
, size
, glyph_index
, load_flags
);
180 /* force drop-out mode to 2 - irrelevant now */
181 /* slot->outline.dropout_mode = 2; */
193 cff_get_glyph_name( CFF_Face face
,
198 CFF_Font font
= (CFF_Font
)face
->extra
.data
;
199 FT_Memory memory
= FT_FACE_MEMORY( face
);
202 FT_Service_PsCMaps psnames
;
206 FT_FACE_FIND_GLOBAL_SERVICE( face
, psnames
, POSTSCRIPT_CMAPS
);
209 FT_ERROR(( "cff_get_glyph_name:" ));
210 FT_ERROR(( " cannot get glyph name from CFF & CEF fonts\n" ));
212 FT_ERROR(( " without the `PSNames' module\n" ));
213 error
= CFF_Err_Unknown_File_Format
;
217 /* first, locate the sid in the charset table */
218 sid
= font
->charset
.sids
[glyph_index
];
220 /* now, lookup the name itself */
221 gname
= cff_index_get_sid_string( &font
->string_index
, sid
, psnames
);
224 FT_STRCPYN( buffer
, gname
, buffer_max
);
235 cff_get_name_index( CFF_Face face
,
236 FT_String
* glyph_name
)
240 FT_Service_PsCMaps psnames
;
241 FT_Memory memory
= FT_FACE_MEMORY( face
);
248 cff
= (CFF_FontRec
*)face
->extra
.data
;
249 charset
= &cff
->charset
;
251 FT_FACE_FIND_GLOBAL_SERVICE( face
, psnames
, POSTSCRIPT_CMAPS
);
255 for ( i
= 0; i
< cff
->num_glyphs
; i
++ )
257 sid
= charset
->sids
[i
];
260 name
= cff_index_get_name( &cff
->string_index
, sid
- 391 );
262 name
= (FT_String
*)psnames
->adobe_std_strings( sid
);
267 result
= ft_strcmp( glyph_name
, name
);
280 static const FT_Service_GlyphDictRec cff_service_glyph_dict
=
282 (FT_GlyphDict_GetNameFunc
) cff_get_glyph_name
,
283 (FT_GlyphDict_NameIndexFunc
)cff_get_name_index
,
288 * POSTSCRIPT INFO SERVICE
293 cff_ps_has_glyph_names( FT_Face face
)
295 return ( face
->face_flags
& FT_FACE_FLAG_GLYPH_NAMES
) > 0;
300 cff_ps_get_font_info( CFF_Face face
,
301 PS_FontInfoRec
* afont_info
)
303 CFF_Font cff
= (CFF_Font
)face
->extra
.data
;
304 FT_Error error
= FT_Err_Ok
;
307 if ( cff
&& cff
->font_info
== NULL
)
309 CFF_FontRecDict dict
= &cff
->top_font
.font_dict
;
310 PS_FontInfoRec
*font_info
;
311 FT_Memory memory
= face
->root
.memory
;
314 if ( FT_ALLOC( font_info
, sizeof ( *font_info
) ) )
317 font_info
->version
= cff_index_get_sid_string( &cff
->string_index
,
320 font_info
->notice
= cff_index_get_sid_string( &cff
->string_index
,
323 font_info
->full_name
= cff_index_get_sid_string( &cff
->string_index
,
326 font_info
->family_name
= cff_index_get_sid_string( &cff
->string_index
,
329 font_info
->weight
= cff_index_get_sid_string( &cff
->string_index
,
332 font_info
->italic_angle
= dict
->italic_angle
;
333 font_info
->is_fixed_pitch
= dict
->is_fixed_pitch
;
334 font_info
->underline_position
= (FT_Short
)dict
->underline_position
;
335 font_info
->underline_thickness
= (FT_Short
)dict
->underline_thickness
;
337 cff
->font_info
= font_info
;
340 *afont_info
= *cff
->font_info
;
347 static const FT_Service_PsInfoRec cff_service_ps_info
=
349 (PS_GetFontInfoFunc
) cff_ps_get_font_info
,
350 (PS_HasGlyphNamesFunc
) cff_ps_has_glyph_names
,
351 (PS_GetFontPrivateFunc
)NULL
/* unsupported with CFF fonts */
358 * If the charmap is a synthetic Unicode encoding cmap or
359 * a Type 1 standard (or expert) encoding cmap, hide TT CMAP INFO
360 * service defined in SFNT module.
362 * Otherwise call the service function in the sfnt module.
366 cff_get_cmap_info( FT_CharMap charmap
,
367 TT_CMapInfo
*cmap_info
)
369 FT_CMap cmap
= FT_CMAP( charmap
);
370 FT_Error error
= CFF_Err_Ok
;
373 cmap_info
->language
= 0;
375 if ( cmap
->clazz
!= &cff_cmap_encoding_class_rec
&&
376 cmap
->clazz
!= &cff_cmap_unicode_class_rec
)
378 FT_Face face
= FT_CMAP_FACE( cmap
);
379 FT_Library library
= FT_FACE_LIBRARY( face
);
380 FT_Module sfnt
= FT_Get_Module( library
, "sfnt" );
381 FT_Service_TTCMaps service
=
382 (FT_Service_TTCMaps
)ft_module_get_service( sfnt
,
383 FT_SERVICE_ID_TT_CMAP
);
386 if ( service
&& service
->get_cmap_info
)
387 error
= service
->get_cmap_info( charmap
, cmap_info
);
394 static const FT_Service_TTCMapsRec cff_service_get_cmap_info
=
396 (TT_CMap_Info_GetFunc
)cff_get_cmap_info
400 /*************************************************************************/
401 /*************************************************************************/
402 /*************************************************************************/
405 /**** D R I V E R I N T E R F A C E ****/
408 /*************************************************************************/
409 /*************************************************************************/
410 /*************************************************************************/
412 static const FT_ServiceDescRec cff_services
[] =
414 { FT_SERVICE_ID_XF86_NAME
, FT_XF86_FORMAT_CFF
},
415 { FT_SERVICE_ID_POSTSCRIPT_INFO
, &cff_service_ps_info
},
416 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
417 { FT_SERVICE_ID_GLYPH_DICT
, &cff_service_glyph_dict
},
419 { FT_SERVICE_ID_TT_CMAP
, &cff_service_get_cmap_info
},
424 FT_CALLBACK_DEF( FT_Module_Interface
)
425 cff_get_interface( FT_Module driver
, /* CFF_Driver */
426 const char* module_interface
)
429 FT_Module_Interface result
;
432 result
= ft_service_list_lookup( cff_services
, module_interface
);
433 if ( result
!= NULL
)
436 /* we pass our request to the `sfnt' module */
437 sfnt
= FT_Get_Module( driver
->library
, "sfnt" );
439 return sfnt
? sfnt
->clazz
->get_interface( sfnt
, module_interface
) : 0;
443 /* The FT_DriverInterface structure is defined in ftdriver.h. */
445 FT_CALLBACK_TABLE_DEF
446 const FT_Driver_ClassRec cff_driver_class
=
448 /* begin with the FT_Module_Class fields */
450 FT_MODULE_FONT_DRIVER
|
451 FT_MODULE_DRIVER_SCALABLE
|
452 FT_MODULE_DRIVER_HAS_HINTER
,
454 sizeof( CFF_DriverRec
),
459 0, /* module-specific interface */
466 /* now the specific driver fields */
467 sizeof( TT_FaceRec
),
468 sizeof( CFF_SizeRec
),
469 sizeof( CFF_GlyphSlotRec
),
478 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
479 ft_stub_set_char_sizes
,
480 ft_stub_set_pixel_sizes
,
486 0, /* FT_Face_AttachFunc */
487 0, /* FT_Face_GetAdvancesFunc */
491 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
494 0 /* FT_Size_SelectFunc */