1 /***************************************************************************/
5 /* Type 42 objects manager (body). */
7 /* Copyright 2002-2009, 2011 */
8 /* by Roberto Alameda. */
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 /***************************************************************************/
22 #include FT_INTERNAL_DEBUG_H
24 #include FT_TRUETYPE_IDS_H
28 #define FT_COMPONENT trace_t42
32 T42_Open_Face( T42_Face face )
36 T1_Font type1 = &face->type1;
37 FT_Memory memory = face->root.memory;
40 PSAux_Service psaux = (PSAux_Service)face->psaux;
43 t42_loader_init( &loader, face );
45 parser = &loader.parser;
47 if ( FT_ALLOC( face->ttf_data, 12 ) )
50 error = t42_parser_init( parser,
57 error = t42_parse_dict( face, &loader,
58 parser->base_dict, parser->base_len );
62 if ( type1->font_type != 42 )
64 FT_ERROR(( "T42_Open_Face: cannot handle FontType %d\n",
66 error = T42_Err_Unknown_File_Format;
70 /* now, propagate the charstrings and glyphnames tables */
71 /* to the Type1 data */
72 type1->num_glyphs = loader.num_glyphs;
74 if ( !loader.charstrings.init )
76 FT_ERROR(( "T42_Open_Face: no charstrings array in face\n" ));
77 error = T42_Err_Invalid_File_Format;
80 loader.charstrings.init = 0;
81 type1->charstrings_block = loader.charstrings.block;
82 type1->charstrings = loader.charstrings.elements;
83 type1->charstrings_len = loader.charstrings.lengths;
85 /* we copy the glyph names `block' and `elements' fields; */
86 /* the `lengths' field must be released later */
87 type1->glyph_names_block = loader.glyph_names.block;
88 type1->glyph_names = (FT_String**)loader.glyph_names.elements;
89 loader.glyph_names.block = 0;
90 loader.glyph_names.elements = 0;
92 /* we must now build type1.encoding when we have a custom array */
93 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
95 FT_Int charcode, idx, min_char, max_char;
100 /* OK, we do the following: for each element in the encoding */
101 /* table, look up the index of the glyph having the same name */
102 /* as defined in the CharStrings array. */
103 /* The index is then stored in type1.encoding.char_index, and */
104 /* the name in type1.encoding.char_name */
110 for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
112 type1->encoding.char_index[charcode] = 0;
113 type1->encoding.char_name [charcode] = (char *)".notdef";
115 char_name = loader.encoding_table.elements[charcode];
117 for ( idx = 0; idx < type1->num_glyphs; idx++ )
119 glyph_name = (FT_Byte*)type1->glyph_names[idx];
120 if ( ft_strcmp( (const char*)char_name,
121 (const char*)glyph_name ) == 0 )
123 type1->encoding.char_index[charcode] = (FT_UShort)idx;
124 type1->encoding.char_name [charcode] = (char*)glyph_name;
126 /* Change min/max encoded char only if glyph name is */
128 if ( ft_strcmp( (const char*)".notdef",
129 (const char*)glyph_name ) != 0 )
131 if ( charcode < min_char )
133 if ( charcode >= max_char )
134 max_char = charcode + 1;
141 type1->encoding.code_first = min_char;
142 type1->encoding.code_last = max_char;
143 type1->encoding.num_chars = loader.num_chars;
147 t42_loader_done( &loader );
152 /***************** Driver Functions *************/
155 FT_LOCAL_DEF( FT_Error )
156 T42_Face_Init( FT_Stream stream,
157 FT_Face t42face, /* T42_Face */
160 FT_Parameter* params )
162 T42_Face face = (T42_Face)t42face;
164 FT_Service_PsCMaps psnames;
166 FT_Face root = (FT_Face)&face->root;
167 T1_Font type1 = &face->type1;
168 PS_FontInfo info = &type1->font_info;
170 FT_UNUSED( num_params );
172 FT_UNUSED( face_index );
176 face->ttf_face = NULL;
177 face->root.num_faces = 1;
179 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
180 face->psnames = psnames;
182 face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
184 psaux = (PSAux_Service)face->psaux;
187 FT_ERROR(( "T42_Face_Init: cannot access `psaux' module\n" ));
188 error = T42_Err_Missing_Module;
192 FT_TRACE2(( "Type 42 driver\n" ));
194 /* open the tokenizer, this will also check the font format */
195 error = T42_Open_Face( face );
199 /* if we just wanted to check the format, leave successfully now */
200 if ( face_index < 0 )
203 /* check the face index */
204 if ( face_index > 0 )
206 FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
207 error = T42_Err_Invalid_Argument;
211 /* Now load the font program into the face object */
213 /* Init the face object fields */
214 /* Now set up root face fields */
216 root->num_glyphs = type1->num_glyphs;
217 root->num_charmaps = 0;
218 root->face_index = 0;
220 root->face_flags = FT_FACE_FLAG_SCALABLE |
221 FT_FACE_FLAG_HORIZONTAL |
222 FT_FACE_FLAG_GLYPH_NAMES;
224 if ( info->is_fixed_pitch )
225 root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
227 /* We only set this flag if we have the patented bytecode interpreter. */
228 /* There are no known `tricky' Type42 fonts that could be loaded with */
229 /* the unpatented interpreter. */
230 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
231 root->face_flags |= FT_FACE_FLAG_HINTER;
234 /* XXX: TODO -- add kerning with .afm support */
236 /* get style name -- be careful, some broken fonts only */
237 /* have a `/FontName' dictionary entry! */
238 root->family_name = info->family_name;
239 /* assume "Regular" style if we don't know better */
240 root->style_name = (char *)"Regular";
241 if ( root->family_name )
243 char* full = info->full_name;
244 char* family = root->family_name;
251 if ( *full == *family )
258 if ( *full == ' ' || *full == '-' )
260 else if ( *family == ' ' || *family == '-' )
265 root->style_name = full;
274 /* do we have a `/FontName'? */
275 if ( type1->font_name )
276 root->family_name = type1->font_name;
279 /* no embedded bitmap support */
280 root->num_fixed_sizes = 0;
281 root->available_sizes = 0;
283 /* Load the TTF font embedded in the T42 font */
288 args.flags = FT_OPEN_MEMORY;
289 args.memory_base = face->ttf_data;
290 args.memory_size = face->ttf_size;
294 args.flags |= FT_OPEN_PARAMS;
295 args.num_params = num_params;
296 args.params = params;
299 error = FT_Open_Face( FT_FACE_LIBRARY( face ),
300 &args, 0, &face->ttf_face );
306 FT_Done_Size( face->ttf_face->size );
308 /* Ignore info in FontInfo dictionary and use the info from the */
309 /* loaded TTF font. The PostScript interpreter also ignores it. */
310 root->bbox = face->ttf_face->bbox;
311 root->units_per_EM = face->ttf_face->units_per_EM;
313 root->ascender = face->ttf_face->ascender;
314 root->descender = face->ttf_face->descender;
315 root->height = face->ttf_face->height;
317 root->max_advance_width = face->ttf_face->max_advance_width;
318 root->max_advance_height = face->ttf_face->max_advance_height;
320 root->underline_position = (FT_Short)info->underline_position;
321 root->underline_thickness = (FT_Short)info->underline_thickness;
323 /* compute style flags */
324 root->style_flags = 0;
325 if ( info->italic_angle )
326 root->style_flags |= FT_STYLE_FLAG_ITALIC;
328 if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD )
329 root->style_flags |= FT_STYLE_FLAG_BOLD;
331 if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL )
332 root->face_flags |= FT_FACE_FLAG_VERTICAL;
337 FT_CharMapRec charmap;
338 T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;
344 /* first of all, try to synthesize a Unicode charmap */
345 charmap.platform_id = TT_PLATFORM_MICROSOFT;
346 charmap.encoding_id = TT_MS_ID_UNICODE_CS;
347 charmap.encoding = FT_ENCODING_UNICODE;
349 error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
350 if ( error && FT_Err_No_Unicode_Glyph_Name != error )
354 /* now, generate an Adobe Standard encoding when appropriate */
355 charmap.platform_id = TT_PLATFORM_ADOBE;
358 switch ( type1->encoding_type )
360 case T1_ENCODING_TYPE_STANDARD:
361 charmap.encoding = FT_ENCODING_ADOBE_STANDARD;
362 charmap.encoding_id = TT_ADOBE_ID_STANDARD;
363 clazz = cmap_classes->standard;
366 case T1_ENCODING_TYPE_EXPERT:
367 charmap.encoding = FT_ENCODING_ADOBE_EXPERT;
368 charmap.encoding_id = TT_ADOBE_ID_EXPERT;
369 clazz = cmap_classes->expert;
372 case T1_ENCODING_TYPE_ARRAY:
373 charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;
374 charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
375 clazz = cmap_classes->custom;
378 case T1_ENCODING_TYPE_ISOLATIN1:
379 charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;
380 charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
381 clazz = cmap_classes->unicode;
389 error = FT_CMap_New( clazz, NULL, &charmap, NULL );
392 /* Select default charmap */
393 if ( root->num_charmaps )
394 root->charmap = root->charmaps[0];
404 T42_Face_Done( FT_Face t42face )
406 T42_Face face = (T42_Face)t42face;
415 type1 = &face->type1;
416 info = &type1->font_info;
417 memory = face->root.memory;
419 /* delete internal ttf face prior to freeing face->ttf_data */
420 if ( face->ttf_face )
421 FT_Done_Face( face->ttf_face );
423 /* release font info strings */
424 FT_FREE( info->version );
425 FT_FREE( info->notice );
426 FT_FREE( info->full_name );
427 FT_FREE( info->family_name );
428 FT_FREE( info->weight );
430 /* release top dictionary */
431 FT_FREE( type1->charstrings_len );
432 FT_FREE( type1->charstrings );
433 FT_FREE( type1->glyph_names );
435 FT_FREE( type1->charstrings_block );
436 FT_FREE( type1->glyph_names_block );
438 FT_FREE( type1->encoding.char_index );
439 FT_FREE( type1->encoding.char_name );
440 FT_FREE( type1->font_name );
442 FT_FREE( face->ttf_data );
445 /* release afm data if present */
446 if ( face->afm_data )
447 T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
450 /* release unicode map, if any */
451 FT_FREE( face->unicode_map.maps );
452 face->unicode_map.num_maps = 0;
454 face->root.family_name = 0;
455 face->root.style_name = 0;
459 /*************************************************************************/
462 /* T42_Driver_Init */
465 /* Initializes a given Type 42 driver object. */
468 /* driver :: A handle to the target driver object. */
471 /* FreeType error code. 0 means success. */
473 FT_LOCAL_DEF( FT_Error )
474 T42_Driver_Init( FT_Module module ) /* T42_Driver */
476 T42_Driver driver = (T42_Driver)module;
480 ttmodule = FT_Get_Module( module->library, "truetype" );
483 FT_ERROR(( "T42_Driver_Init: cannot access `truetype' module\n" ));
484 return T42_Err_Missing_Module;
487 driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;
494 T42_Driver_Done( FT_Module module )
500 FT_LOCAL_DEF( FT_Error )
501 T42_Size_Init( FT_Size size ) /* T42_Size */
503 T42_Size t42size = (T42_Size)size;
504 FT_Face face = size->face;
505 T42_Face t42face = (T42_Face)face;
507 FT_Error error = T42_Err_Ok;
510 error = FT_New_Size( t42face->ttf_face, &ttsize );
511 t42size->ttsize = ttsize;
513 FT_Activate_Size( ttsize );
519 FT_LOCAL_DEF( FT_Error )
520 T42_Size_Request( FT_Size t42size, /* T42_Size */
521 FT_Size_Request req )
523 T42_Size size = (T42_Size)t42size;
524 T42_Face face = (T42_Face)t42size->face;
528 FT_Activate_Size( size->ttsize );
530 error = FT_Request_Size( face->ttf_face, req );
532 t42size->metrics = face->ttf_face->size->metrics;
538 FT_LOCAL_DEF( FT_Error )
539 T42_Size_Select( FT_Size t42size, /* T42_Size */
540 FT_ULong strike_index )
542 T42_Size size = (T42_Size)t42size;
543 T42_Face face = (T42_Face)t42size->face;
547 FT_Activate_Size( size->ttsize );
549 error = FT_Select_Size( face->ttf_face, (FT_Int)strike_index );
551 t42size->metrics = face->ttf_face->size->metrics;
559 T42_Size_Done( FT_Size t42size ) /* T42_Size */
561 T42_Size size = (T42_Size)t42size;
562 FT_Face face = t42size->face;
563 T42_Face t42face = (T42_Face)face;
567 node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
570 FT_Done_Size( size->ttsize );
576 FT_LOCAL_DEF( FT_Error )
577 T42_GlyphSlot_Init( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
579 T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
580 FT_Face face = t42slot->face;
581 T42_Face t42face = (T42_Face)face;
583 FT_Error error = T42_Err_Ok;
586 if ( face->glyph == NULL )
588 /* First glyph slot for this face */
589 slot->ttslot = t42face->ttf_face->glyph;
593 error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
594 slot->ttslot = ttslot;
602 T42_GlyphSlot_Done( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
604 T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
607 FT_Done_GlyphSlot( slot->ttslot );
612 t42_glyphslot_clear( FT_GlyphSlot slot )
614 /* free bitmap if needed */
615 ft_glyphslot_free_bitmap( slot );
617 /* clear all public fields in the glyph slot */
618 FT_ZERO( &slot->metrics );
619 FT_ZERO( &slot->outline );
620 FT_ZERO( &slot->bitmap );
622 slot->bitmap_left = 0;
623 slot->bitmap_top = 0;
624 slot->num_subglyphs = 0;
626 slot->control_data = 0;
627 slot->control_len = 0;
629 slot->format = FT_GLYPH_FORMAT_NONE;
631 slot->linearHoriAdvance = 0;
632 slot->linearVertAdvance = 0;
636 FT_LOCAL_DEF( FT_Error )
637 T42_GlyphSlot_Load( FT_GlyphSlot glyph,
640 FT_Int32 load_flags )
643 T42_GlyphSlot t42slot = (T42_GlyphSlot)glyph;
644 T42_Size t42size = (T42_Size)size;
645 FT_Driver_Class ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;
648 t42_glyphslot_clear( t42slot->ttslot );
649 error = ttclazz->load_glyph( t42slot->ttslot,
652 load_flags | FT_LOAD_NO_BITMAP );
656 glyph->metrics = t42slot->ttslot->metrics;
658 glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
659 glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;
661 glyph->format = t42slot->ttslot->format;
662 glyph->outline = t42slot->ttslot->outline;
664 glyph->bitmap = t42slot->ttslot->bitmap;
665 glyph->bitmap_left = t42slot->ttslot->bitmap_left;
666 glyph->bitmap_top = t42slot->ttslot->bitmap_top;
668 glyph->num_subglyphs = t42slot->ttslot->num_subglyphs;
669 glyph->subglyphs = t42slot->ttslot->subglyphs;
671 glyph->control_data = t42slot->ttslot->control_data;
672 glyph->control_len = t42slot->ttslot->control_len;