--- /dev/null
+/***************************************************************************/
+/* */
+/* t42objs.c */
+/* */
+/* Type 42 objects manager (body). */
+/* */
+/* Copyright 2002-2017 by */
+/* Roberto Alameda. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "t42objs.h"
+#include "t42parse.h"
+#include "t42error.h"
+#include FT_INTERNAL_DEBUG_H
+#include FT_LIST_H
+#include FT_TRUETYPE_IDS_H
+
+
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_t42
+
+
+ static FT_Error
+ T42_Open_Face( T42_Face face )
+ {
+ T42_LoaderRec loader;
+ T42_Parser parser;
+ T1_Font type1 = &face->type1;
+ FT_Memory memory = face->root.memory;
+ FT_Error error;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+
+ t42_loader_init( &loader, face );
+
+ parser = &loader.parser;
+
+ if ( FT_ALLOC( face->ttf_data, 12 ) )
+ goto Exit;
+
+ /* while parsing the font we always update `face->ttf_size' so that */
+ /* even in case of buggy data (which might lead to premature end of */
+ /* scanning without causing an error) the call to `FT_Open_Face' in */
+ /* `T42_Face_Init' passes the correct size */
+ face->ttf_size = 12;
+
+ error = t42_parser_init( parser,
+ face->root.stream,
+ memory,
+ psaux);
+ if ( error )
+ goto Exit;
+
+ error = t42_parse_dict( face, &loader,
+ parser->base_dict, parser->base_len );
+ if ( error )
+ goto Exit;
+
+ if ( type1->font_type != 42 )
+ {
+ FT_ERROR(( "T42_Open_Face: cannot handle FontType %d\n",
+ type1->font_type ));
+ error = FT_THROW( Unknown_File_Format );
+ goto Exit;
+ }
+
+ /* now, propagate the charstrings and glyphnames tables */
+ /* to the Type1 data */
+ type1->num_glyphs = loader.num_glyphs;
+
+ if ( !loader.charstrings.init )
+ {
+ FT_ERROR(( "T42_Open_Face: no charstrings array in face\n" ));
+ error = FT_THROW( Invalid_File_Format );
+ }
+
+ loader.charstrings.init = 0;
+ type1->charstrings_block = loader.charstrings.block;
+ type1->charstrings = loader.charstrings.elements;
+ type1->charstrings_len = loader.charstrings.lengths;
+
+ /* we copy the glyph names `block' and `elements' fields; */
+ /* the `lengths' field must be released later */
+ type1->glyph_names_block = loader.glyph_names.block;
+ type1->glyph_names = (FT_String**)loader.glyph_names.elements;
+ loader.glyph_names.block = NULL;
+ loader.glyph_names.elements = NULL;
+
+ /* we must now build type1.encoding when we have a custom array */
+ if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
+ {
+ FT_Int charcode, idx, min_char, max_char;
+ FT_Byte* glyph_name;
+
+
+ /* OK, we do the following: for each element in the encoding */
+ /* table, look up the index of the glyph having the same name */
+ /* as defined in the CharStrings array. */
+ /* The index is then stored in type1.encoding.char_index, and */
+ /* the name in type1.encoding.char_name */
+
+ min_char = 0;
+ max_char = 0;
+
+ charcode = 0;
+ for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
+ {
+ FT_Byte* char_name;
+
+
+ type1->encoding.char_index[charcode] = 0;
+ type1->encoding.char_name [charcode] = (char *)".notdef";
+
+ char_name = loader.encoding_table.elements[charcode];
+ if ( char_name )
+ for ( idx = 0; idx < type1->num_glyphs; idx++ )
+ {
+ glyph_name = (FT_Byte*)type1->glyph_names[idx];
+ if ( ft_strcmp( (const char*)char_name,
+ (const char*)glyph_name ) == 0 )
+ {
+ type1->encoding.char_index[charcode] = (FT_UShort)idx;
+ type1->encoding.char_name [charcode] = (char*)glyph_name;
+
+ /* Change min/max encoded char only if glyph name is */
+ /* not /.notdef */
+ if ( ft_strcmp( (const char*)".notdef",
+ (const char*)glyph_name ) != 0 )
+ {
+ if ( charcode < min_char )
+ min_char = charcode;
+ if ( charcode >= max_char )
+ max_char = charcode + 1;
+ }
+ break;
+ }
+ }
+ }
+
+ type1->encoding.code_first = min_char;
+ type1->encoding.code_last = max_char;
+ type1->encoding.num_chars = loader.num_chars;
+ }
+
+ Exit:
+ t42_loader_done( &loader );
+ return error;
+ }
+
+
+ /***************** Driver Functions *************/
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_Face_Init( FT_Stream stream,
+ FT_Face t42face, /* T42_Face */
+ FT_Int face_index,
+ FT_Int num_params,
+ FT_Parameter* params )
+ {
+ T42_Face face = (T42_Face)t42face;
+ FT_Error error;
+ FT_Service_PsCMaps psnames;
+ PSAux_Service psaux;
+ FT_Face root = (FT_Face)&face->root;
+ T1_Font type1 = &face->type1;
+ PS_FontInfo info = &type1->font_info;
+
+ FT_UNUSED( num_params );
+ FT_UNUSED( params );
+ FT_UNUSED( stream );
+
+
+ face->ttf_face = NULL;
+ face->root.num_faces = 1;
+
+ FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
+ face->psnames = psnames;
+
+ face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
+ "psaux" );
+ psaux = (PSAux_Service)face->psaux;
+ if ( !psaux )
+ {
+ FT_ERROR(( "T42_Face_Init: cannot access `psaux' module\n" ));
+ error = FT_THROW( Missing_Module );
+ goto Exit;
+ }
+
+ FT_TRACE2(( "Type 42 driver\n" ));
+
+ /* open the tokenizer, this will also check the font format */
+ error = T42_Open_Face( face );
+ if ( error )
+ goto Exit;
+
+ /* if we just wanted to check the format, leave successfully now */
+ if ( face_index < 0 )
+ goto Exit;
+
+ /* check the face index */
+ if ( ( face_index & 0xFFFF ) > 0 )
+ {
+ FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
+ error = FT_THROW( Invalid_Argument );
+ goto Exit;
+ }
+
+ /* Now load the font program into the face object */
+
+ /* Init the face object fields */
+ /* Now set up root face fields */
+
+ root->num_glyphs = type1->num_glyphs;
+ root->num_charmaps = 0;
+ root->face_index = 0;
+
+ root->face_flags |= FT_FACE_FLAG_SCALABLE |
+ FT_FACE_FLAG_HORIZONTAL |
+ FT_FACE_FLAG_GLYPH_NAMES;
+
+ if ( info->is_fixed_pitch )
+ root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+ root->face_flags |= FT_FACE_FLAG_HINTER;
+#endif
+
+ /* XXX: TODO -- add kerning with .afm support */
+
+ /* get style name -- be careful, some broken fonts only */
+ /* have a `/FontName' dictionary entry! */
+ root->family_name = info->family_name;
+ /* assume "Regular" style if we don't know better */
+ root->style_name = (char *)"Regular";
+ if ( root->family_name )
+ {
+ char* full = info->full_name;
+ char* family = root->family_name;
+
+
+ if ( full )
+ {
+ while ( *full )
+ {
+ if ( *full == *family )
+ {
+ family++;
+ full++;
+ }
+ else
+ {
+ if ( *full == ' ' || *full == '-' )
+ full++;
+ else if ( *family == ' ' || *family == '-' )
+ family++;
+ else
+ {
+ if ( !*family )
+ root->style_name = full;
+ break;
+ }
+ }
+ }
+ }
+ }
+ else
+ {
+ /* do we have a `/FontName'? */
+ if ( type1->font_name )
+ root->family_name = type1->font_name;
+ }
+
+ /* no embedded bitmap support */
+ root->num_fixed_sizes = 0;
+ root->available_sizes = NULL;
+
+ /* Load the TTF font embedded in the T42 font */
+ {
+ FT_Open_Args args;
+
+
+ args.flags = FT_OPEN_MEMORY | FT_OPEN_DRIVER;
+ args.driver = FT_Get_Module( FT_FACE_LIBRARY( face ),
+ "truetype" );
+ args.memory_base = face->ttf_data;
+ args.memory_size = face->ttf_size;
+
+ if ( num_params )
+ {
+ args.flags |= FT_OPEN_PARAMS;
+ args.num_params = num_params;
+ args.params = params;
+ }
+
+ error = FT_Open_Face( FT_FACE_LIBRARY( face ),
+ &args, 0, &face->ttf_face );
+ }
+
+ if ( error )
+ goto Exit;
+
+ FT_Done_Size( face->ttf_face->size );
+
+ /* Ignore info in FontInfo dictionary and use the info from the */
+ /* loaded TTF font. The PostScript interpreter also ignores it. */
+ root->bbox = face->ttf_face->bbox;
+ root->units_per_EM = face->ttf_face->units_per_EM;
+
+ root->ascender = face->ttf_face->ascender;
+ root->descender = face->ttf_face->descender;
+ root->height = face->ttf_face->height;
+
+ root->max_advance_width = face->ttf_face->max_advance_width;
+ root->max_advance_height = face->ttf_face->max_advance_height;
+
+ root->underline_position = (FT_Short)info->underline_position;
+ root->underline_thickness = (FT_Short)info->underline_thickness;
+
+ /* compute style flags */
+ root->style_flags = 0;
+ if ( info->italic_angle )
+ root->style_flags |= FT_STYLE_FLAG_ITALIC;
+
+ if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD )
+ root->style_flags |= FT_STYLE_FLAG_BOLD;
+
+ if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL )
+ root->face_flags |= FT_FACE_FLAG_VERTICAL;
+
+ {
+ if ( psnames )
+ {
+ FT_CharMapRec charmap;
+ T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes;
+ FT_CMap_Class clazz;
+
+
+ charmap.face = root;
+
+ /* first of all, try to synthesize a Unicode charmap */
+ charmap.platform_id = TT_PLATFORM_MICROSOFT;
+ charmap.encoding_id = TT_MS_ID_UNICODE_CS;
+ charmap.encoding = FT_ENCODING_UNICODE;
+
+ error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
+ if ( error &&
+ FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )
+ goto Exit;
+ error = FT_Err_Ok;
+
+ /* now, generate an Adobe Standard encoding when appropriate */
+ charmap.platform_id = TT_PLATFORM_ADOBE;
+ clazz = NULL;
+
+ switch ( type1->encoding_type )
+ {
+ case T1_ENCODING_TYPE_STANDARD:
+ charmap.encoding = FT_ENCODING_ADOBE_STANDARD;
+ charmap.encoding_id = TT_ADOBE_ID_STANDARD;
+ clazz = cmap_classes->standard;
+ break;
+
+ case T1_ENCODING_TYPE_EXPERT:
+ charmap.encoding = FT_ENCODING_ADOBE_EXPERT;
+ charmap.encoding_id = TT_ADOBE_ID_EXPERT;
+ clazz = cmap_classes->expert;
+ break;
+
+ case T1_ENCODING_TYPE_ARRAY:
+ charmap.encoding = FT_ENCODING_ADOBE_CUSTOM;
+ charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
+ clazz = cmap_classes->custom;
+ break;
+
+ case T1_ENCODING_TYPE_ISOLATIN1:
+ charmap.encoding = FT_ENCODING_ADOBE_LATIN_1;
+ charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
+ clazz = cmap_classes->unicode;
+ break;
+
+ default:
+ ;
+ }
+
+ if ( clazz )
+ error = FT_CMap_New( clazz, NULL, &charmap, NULL );
+ }
+ }
+ Exit:
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ T42_Face_Done( FT_Face t42face )
+ {
+ T42_Face face = (T42_Face)t42face;
+ T1_Font type1;
+ PS_FontInfo info;
+ FT_Memory memory;
+
+
+ if ( !face )
+ return;
+
+ type1 = &face->type1;
+ info = &type1->font_info;
+ memory = face->root.memory;
+
+ /* delete internal ttf face prior to freeing face->ttf_data */
+ if ( face->ttf_face )
+ FT_Done_Face( face->ttf_face );
+
+ /* release font info strings */
+ FT_FREE( info->version );
+ FT_FREE( info->notice );
+ FT_FREE( info->full_name );
+ FT_FREE( info->family_name );
+ FT_FREE( info->weight );
+
+ /* release top dictionary */
+ FT_FREE( type1->charstrings_len );
+ FT_FREE( type1->charstrings );
+ FT_FREE( type1->glyph_names );
+
+ FT_FREE( type1->charstrings_block );
+ FT_FREE( type1->glyph_names_block );
+
+ FT_FREE( type1->encoding.char_index );
+ FT_FREE( type1->encoding.char_name );
+ FT_FREE( type1->font_name );
+
+ FT_FREE( face->ttf_data );
+
+#if 0
+ /* release afm data if present */
+ if ( face->afm_data )
+ T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
+#endif
+
+ /* release unicode map, if any */
+ FT_FREE( face->unicode_map.maps );
+ face->unicode_map.num_maps = 0;
+
+ face->root.family_name = NULL;
+ face->root.style_name = NULL;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* T42_Driver_Init */
+ /* */
+ /* <Description> */
+ /* Initializes a given Type 42 driver object. */
+ /* */
+ /* <Input> */
+ /* driver :: A handle to the target driver object. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ T42_Driver_Init( FT_Module module ) /* T42_Driver */
+ {
+ T42_Driver driver = (T42_Driver)module;
+ FT_Module ttmodule;
+
+
+ ttmodule = FT_Get_Module( module->library, "truetype" );
+ if ( !ttmodule )
+ {
+ FT_ERROR(( "T42_Driver_Init: cannot access `truetype' module\n" ));
+ return FT_THROW( Missing_Module );
+ }
+
+ driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;
+
+ return FT_Err_Ok;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ T42_Driver_Done( FT_Module module )
+ {
+ FT_UNUSED( module );
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_Size_Init( FT_Size size ) /* T42_Size */
+ {
+ T42_Size t42size = (T42_Size)size;
+ FT_Face face = size->face;
+ T42_Face t42face = (T42_Face)face;
+ FT_Size ttsize;
+ FT_Error error;
+
+
+ error = FT_New_Size( t42face->ttf_face, &ttsize );
+ t42size->ttsize = ttsize;
+
+ FT_Activate_Size( ttsize );
+
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_Size_Request( FT_Size t42size, /* T42_Size */
+ FT_Size_Request req )
+ {
+ T42_Size size = (T42_Size)t42size;
+ T42_Face face = (T42_Face)t42size->face;
+ FT_Error error;
+
+
+ FT_Activate_Size( size->ttsize );
+
+ error = FT_Request_Size( face->ttf_face, req );
+ if ( !error )
+ t42size->metrics = face->ttf_face->size->metrics;
+
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_Size_Select( FT_Size t42size, /* T42_Size */
+ FT_ULong strike_index )
+ {
+ T42_Size size = (T42_Size)t42size;
+ T42_Face face = (T42_Face)t42size->face;
+ FT_Error error;
+
+
+ FT_Activate_Size( size->ttsize );
+
+ error = FT_Select_Size( face->ttf_face, (FT_Int)strike_index );
+ if ( !error )
+ t42size->metrics = face->ttf_face->size->metrics;
+
+ return error;
+
+ }
+
+
+ FT_LOCAL_DEF( void )
+ T42_Size_Done( FT_Size t42size ) /* T42_Size */
+ {
+ T42_Size size = (T42_Size)t42size;
+ FT_Face face = t42size->face;
+ T42_Face t42face = (T42_Face)face;
+ FT_ListNode node;
+
+
+ node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
+ if ( node )
+ {
+ FT_Done_Size( size->ttsize );
+ size->ttsize = NULL;
+ }
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_GlyphSlot_Init( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
+ {
+ T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
+ FT_Face face = t42slot->face;
+ T42_Face t42face = (T42_Face)face;
+ FT_GlyphSlot ttslot;
+ FT_Error error = FT_Err_Ok;
+
+
+ if ( !face->glyph )
+ {
+ /* First glyph slot for this face */
+ slot->ttslot = t42face->ttf_face->glyph;
+ }
+ else
+ {
+ error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
+ slot->ttslot = ttslot;
+ }
+
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ T42_GlyphSlot_Done( FT_GlyphSlot t42slot ) /* T42_GlyphSlot */
+ {
+ T42_GlyphSlot slot = (T42_GlyphSlot)t42slot;
+
+
+ FT_Done_GlyphSlot( slot->ttslot );
+ }
+
+
+ static void
+ t42_glyphslot_clear( FT_GlyphSlot slot )
+ {
+ /* free bitmap if needed */
+ ft_glyphslot_free_bitmap( slot );
+
+ /* clear all public fields in the glyph slot */
+ FT_ZERO( &slot->metrics );
+ FT_ZERO( &slot->outline );
+ FT_ZERO( &slot->bitmap );
+
+ slot->bitmap_left = 0;
+ slot->bitmap_top = 0;
+ slot->num_subglyphs = 0;
+ slot->subglyphs = NULL;
+ slot->control_data = NULL;
+ slot->control_len = 0;
+ slot->other = NULL;
+ slot->format = FT_GLYPH_FORMAT_NONE;
+
+ slot->linearHoriAdvance = 0;
+ slot->linearVertAdvance = 0;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T42_GlyphSlot_Load( FT_GlyphSlot glyph,
+ FT_Size size,
+ FT_UInt glyph_index,
+ FT_Int32 load_flags )
+ {
+ FT_Error error;
+ T42_GlyphSlot t42slot = (T42_GlyphSlot)glyph;
+ T42_Size t42size = (T42_Size)size;
+ T42_Face t42face = (T42_Face)size->face;
+ FT_Driver_Class ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;
+
+
+ FT_TRACE1(( "T42_GlyphSlot_Load: glyph index %d\n", glyph_index ));
+
+ /* map T42 glyph index to embedded TTF's glyph index */
+ glyph_index = (FT_UInt)ft_strtol(
+ (const char *)t42face->type1.charstrings[glyph_index],
+ NULL, 10 );
+
+ t42_glyphslot_clear( t42slot->ttslot );
+ error = ttclazz->load_glyph( t42slot->ttslot,
+ t42size->ttsize,
+ glyph_index,
+ load_flags | FT_LOAD_NO_BITMAP );
+
+ if ( !error )
+ {
+ glyph->metrics = t42slot->ttslot->metrics;
+
+ glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
+ glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;
+
+ glyph->format = t42slot->ttslot->format;
+ glyph->outline = t42slot->ttslot->outline;
+
+ glyph->bitmap = t42slot->ttslot->bitmap;
+ glyph->bitmap_left = t42slot->ttslot->bitmap_left;
+ glyph->bitmap_top = t42slot->ttslot->bitmap_top;
+
+ glyph->num_subglyphs = t42slot->ttslot->num_subglyphs;
+ glyph->subglyphs = t42slot->ttslot->subglyphs;
+
+ glyph->control_data = t42slot->ttslot->control_data;
+ glyph->control_len = t42slot->ttslot->control_len;
+ }
+
+ return error;
+ }
+
+
+/* END */
projects / reactos.git / blobdiff