| /***************************************************************************/ |
| /* */ |
| /* cffobjs.c */ |
| /* */ |
| /* OpenType objects manager (body). */ |
| /* */ |
| /* Copyright 1996-2001 by */ |
| /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| /* */ |
| /* 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 <ft2build.h> |
| #include FT_INTERNAL_DEBUG_H |
| #include FT_INTERNAL_CALC_H |
| #include FT_INTERNAL_STREAM_H |
| #include FT_ERRORS_H |
| #include FT_TRUETYPE_IDS_H |
| #include FT_TRUETYPE_TAGS_H |
| #include FT_INTERNAL_SFNT_H |
| #include FT_INTERNAL_POSTSCRIPT_NAMES_H |
| #include FT_INTERNAL_POSTSCRIPT_HINTS_H |
| #include "cffobjs.h" |
| #include "cffload.h" |
| |
| #include "cfferrs.h" |
| |
| #include <string.h> /* for strlen() */ |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| /* messages during execution. */ |
| /* */ |
| #undef FT_COMPONENT |
| #define FT_COMPONENT trace_cffobjs |
| |
| |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* SIZE FUNCTIONS */ |
| /* */ |
| /* Note that we store the global hints in the size's "internal" root */ |
| /* field. */ |
| /* */ |
| /*************************************************************************/ |
| |
| |
| static PSH_Globals_Funcs |
| CFF_Size_Get_Globals_Funcs( CFF_Size size ) |
| { |
| CFF_Face face = (CFF_Face)size->face; |
| CFF_Font font = (CFF_FontRec *)face->extra.data; |
| PSHinter_Service pshinter = (PSHinter_Service)font->pshinter; |
| FT_Module module; |
| |
| |
| module = FT_Get_Module( size->face->driver->root.library, |
| "pshinter" ); |
| return ( module && pshinter && pshinter->get_globals_funcs ) |
| ? pshinter->get_globals_funcs( module ) |
| : 0; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| CFF_Size_Done( CFF_Size size ) |
| { |
| if ( size->internal ) |
| { |
| PSH_Globals_Funcs funcs; |
| |
| |
| funcs = CFF_Size_Get_Globals_Funcs( size ); |
| if ( funcs ) |
| funcs->destroy( (PSH_Globals)size->internal ); |
| |
| size->internal = 0; |
| } |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| CFF_Size_Init( CFF_Size size ) |
| { |
| FT_Error error = 0; |
| PSH_Globals_Funcs funcs = CFF_Size_Get_Globals_Funcs( size ); |
| |
| |
| if ( funcs ) |
| { |
| PSH_Globals globals; |
| CFF_Face face = (CFF_Face)size->face; |
| CFF_Font font = (CFF_FontRec *)face->extra.data; |
| CFF_SubFont subfont = &font->top_font; |
| |
| CFF_Private cpriv = &subfont->private_dict; |
| PS_PrivateRec priv; |
| |
| |
| /* IMPORTANT: The CFF and Type1 private dictionaries have */ |
| /* slightly different structures; we need to */ |
| /* synthetize a type1 dictionary on the fly here. */ |
| |
| { |
| FT_UInt n, count; |
| |
| |
| MEM_Set( &priv, 0, sizeof ( priv ) ); |
| |
| count = priv.num_blue_values = cpriv->num_blue_values; |
| for ( n = 0; n < count; n++ ) |
| priv.blue_values[n] = (FT_Short)cpriv->blue_values[n]; |
| |
| count = priv.num_other_blues = cpriv->num_other_blues; |
| for ( n = 0; n < count; n++ ) |
| priv.other_blues[n] = (FT_Short)cpriv->other_blues[n]; |
| |
| count = priv.num_family_blues = cpriv->num_family_blues; |
| for ( n = 0; n < count; n++ ) |
| priv.family_blues[n] = (FT_Short)cpriv->family_blues[n]; |
| |
| count = priv.num_family_other_blues = cpriv->num_family_other_blues; |
| for ( n = 0; n < count; n++ ) |
| priv.family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; |
| |
| priv.blue_scale = cpriv->blue_scale; |
| priv.blue_shift = cpriv->blue_shift; |
| priv.blue_fuzz = cpriv->blue_fuzz; |
| |
| priv.standard_width[0] = (FT_UShort)cpriv->standard_width; |
| priv.standard_height[0] = (FT_UShort)cpriv->standard_height; |
| |
| count = priv.num_snap_widths = cpriv->num_snap_widths; |
| for ( n = 0; n < count; n++ ) |
| priv.snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; |
| |
| count = priv.num_snap_heights = cpriv->num_snap_heights; |
| for ( n = 0; n < count; n++ ) |
| priv.snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; |
| |
| priv.force_bold = cpriv->force_bold; |
| priv.language_group = cpriv->language_group; |
| priv.lenIV = cpriv->lenIV; |
| } |
| |
| error = funcs->create( size->face->memory, &priv, &globals ); |
| if ( !error ) |
| size->internal = (FT_Size_Internal)(void*)globals; |
| } |
| |
| return error; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| CFF_Size_Reset( CFF_Size size ) |
| { |
| PSH_Globals_Funcs funcs = CFF_Size_Get_Globals_Funcs( size ); |
| FT_Error error = 0; |
| |
| |
| if ( funcs ) |
| error = funcs->set_scale( (PSH_Globals)size->internal, |
| size->metrics.x_scale, |
| size->metrics.y_scale, |
| 0, 0 ); |
| return error; |
| } |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* SLOT FUNCTIONS */ |
| /* */ |
| /*************************************************************************/ |
| |
| FT_LOCAL_DEF( void ) |
| CFF_GlyphSlot_Done( CFF_GlyphSlot slot ) |
| { |
| slot->root.internal->glyph_hints = 0; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| CFF_GlyphSlot_Init( CFF_GlyphSlot slot ) |
| { |
| CFF_Face face = (CFF_Face)slot->root.face; |
| CFF_Font font = (CFF_FontRec *)face->extra.data; |
| PSHinter_Service pshinter = (PSHinter_Service)font->pshinter; |
| |
| |
| if ( pshinter ) |
| { |
| FT_Module module; |
| |
| |
| module = FT_Get_Module( slot->root.face->driver->root.library, |
| "pshinter" ); |
| if ( module ) |
| { |
| T2_Hints_Funcs funcs; |
| |
| |
| funcs = pshinter->get_t2_funcs( module ); |
| slot->root.internal->glyph_hints = (void*)funcs; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* FACE FUNCTIONS */ |
| /* */ |
| /*************************************************************************/ |
| |
| static FT_String* |
| CFF_StrCopy( FT_Memory memory, |
| const FT_String* source ) |
| { |
| FT_Error error; |
| FT_String* result = 0; |
| FT_Int len = (FT_Int)strlen( source ); |
| |
| |
| if ( !ALLOC( result, len + 1 ) ) |
| { |
| MEM_Copy( result, source, len ); |
| result[len] = 0; |
| } |
| |
| FT_UNUSED( error ); |
| |
| return result; |
| } |
| |
| |
| |
| |
| static FT_Encoding |
| find_encoding( int platform_id, |
| int encoding_id ) |
| { |
| typedef struct TEncoding |
| { |
| int platform_id; |
| int encoding_id; |
| FT_Encoding encoding; |
| |
| } TEncoding; |
| |
| static |
| const TEncoding tt_encodings[] = |
| { |
| { TT_PLATFORM_ISO, -1, ft_encoding_unicode }, |
| |
| { TT_PLATFORM_APPLE_UNICODE, -1, ft_encoding_unicode }, |
| |
| { TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN, ft_encoding_apple_roman }, |
| |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, ft_encoding_unicode }, |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_SJIS, ft_encoding_sjis }, |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_GB2312, ft_encoding_gb2312 }, |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_BIG_5, ft_encoding_big5 }, |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_WANSUNG, ft_encoding_wansung }, |
| { TT_PLATFORM_MICROSOFT, TT_MS_ID_JOHAB, ft_encoding_johab } |
| }; |
| |
| const TEncoding *cur, *limit; |
| |
| |
| cur = tt_encodings; |
| limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] ); |
| |
| for ( ; cur < limit; cur++ ) |
| { |
| if ( cur->platform_id == platform_id ) |
| { |
| if ( cur->encoding_id == encoding_id || |
| cur->encoding_id == -1 ) |
| return cur->encoding; |
| } |
| } |
| |
| return ft_encoding_none; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| CFF_Face_Init( FT_Stream stream, |
| CFF_Face face, |
| FT_Int face_index, |
| FT_Int num_params, |
| FT_Parameter* params ) |
| { |
| FT_Error error; |
| SFNT_Service sfnt; |
| PSNames_Service psnames; |
| PSHinter_Service pshinter; |
| FT_Bool pure_cff = 1; |
| FT_Bool sfnt_format = 0; |
| |
| |
| sfnt = (SFNT_Service)FT_Get_Module_Interface( |
| face->root.driver->root.library, "sfnt" ); |
| if ( !sfnt ) |
| goto Bad_Format; |
| |
| psnames = (PSNames_Service)FT_Get_Module_Interface( |
| face->root.driver->root.library, "psnames" ); |
| |
| pshinter = (PSHinter_Service)FT_Get_Module_Interface( |
| face->root.driver->root.library, "pshinter" ); |
| |
| /* create input stream from resource */ |
| if ( FT_STREAM_SEEK( 0 ) ) |
| goto Exit; |
| |
| /* check that we have a valid OpenType file */ |
| error = sfnt->init_face( stream, face, face_index, num_params, params ); |
| if ( !error ) |
| { |
| if ( face->format_tag != 0x4F54544FL ) /* `OTTO'; OpenType/CFF font */ |
| { |
| FT_TRACE2(( "[not a valid OpenType/CFF font]\n" )); |
| goto Bad_Format; |
| } |
| |
| /* if we are performing a simple font format check, exit immediately */ |
| if ( face_index < 0 ) |
| return CFF_Err_Ok; |
| |
| sfnt_format = 1; |
| |
| /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ |
| /* font in the later case; it doesn't have a `head' table */ |
| error = face->goto_table( face, TTAG_head, stream, 0 ); |
| if ( !error ) |
| { |
| pure_cff = 0; |
| |
| /* load font directory */ |
| error = sfnt->load_face( stream, face, |
| face_index, num_params, params ); |
| if ( error ) |
| goto Exit; |
| } |
| else |
| { |
| /* load the `cmap' table by hand */ |
| error = sfnt->load_charmaps( face, stream ); |
| if ( error ) |
| goto Exit; |
| |
| /* XXX: we don't load the GPOS table, as OpenType Layout */ |
| /* support will be added later to a layout library on top of */ |
| /* FreeType 2 */ |
| } |
| |
| /* now, load the CFF part of the file */ |
| error = face->goto_table( face, TTAG_CFF, stream, 0 ); |
| if ( error ) |
| goto Exit; |
| } |
| else |
| { |
| /* rewind to start of file; we are going to load a pure-CFF font */ |
| if ( FT_STREAM_SEEK( 0 ) ) |
| goto Exit; |
| error = CFF_Err_Ok; |
| } |
| |
| /* now load and parse the CFF table in the file */ |
| { |
| CFF_Font cff; |
| FT_Memory memory = face->root.memory; |
| FT_Face root; |
| FT_UInt flags; |
| |
| |
| if ( ALLOC( cff, sizeof ( *cff ) ) ) |
| goto Exit; |
| |
| face->extra.data = cff; |
| error = CFF_Load_Font( stream, face_index, cff ); |
| if ( error ) |
| goto Exit; |
| |
| cff->pshinter = pshinter; |
| |
| /* Complement the root flags with some interesting information. */ |
| /* Note that this is only necessary for pure CFF and CEF fonts. */ |
| |
| root = &face->root; |
| root->num_glyphs = cff->num_glyphs; |
| |
| if ( pure_cff ) |
| { |
| CFF_FontRecDict dict = &cff->top_font.font_dict; |
| |
| |
| /* we need the `PSNames' module for pure-CFF and CEF formats */ |
| if ( !psnames ) |
| { |
| FT_ERROR(( "CFF_Face_Init:" )); |
| FT_ERROR(( " cannot open CFF & CEF fonts\n" )); |
| FT_ERROR(( " " )); |
| FT_ERROR(( " without the `PSNames' module\n" )); |
| goto Bad_Format; |
| } |
| |
| /* Set up num_faces. */ |
| root->num_faces = cff->num_faces; |
| |
| /* compute number of glyphs */ |
| if ( dict->cid_registry ) |
| root->num_glyphs = dict->cid_count; |
| else |
| root->num_glyphs = cff->charstrings_index.count; |
| |
| /* set global bbox, as well as EM size */ |
| root->bbox.xMin = dict->font_bbox.xMin >> 16; |
| root->bbox.yMin = dict->font_bbox.yMin >> 16; |
| root->bbox.xMax = (dict->font_bbox.xMax + 0xFFFFU) >> 16; |
| root->bbox.yMax = (dict->font_bbox.yMax + 0xFFFFU) >> 16; |
| |
| |
| root->ascender = (FT_Short)( root->bbox.yMax ); |
| root->descender = (FT_Short)( root->bbox.yMin ); |
| root->height = (FT_Short)( |
| ( ( root->ascender - root->descender ) * 12 ) / 10 ); |
| |
| if ( dict->units_per_em ) |
| root->units_per_EM = dict->units_per_em; |
| else |
| root->units_per_EM = 1000; |
| |
| /* retrieve font family & style name */ |
| root->family_name = CFF_Get_Name( &cff->name_index, face_index ); |
| if ( dict->cid_registry ) |
| root->style_name = CFF_StrCopy( memory, "Regular" ); /* XXXX */ |
| else |
| root->style_name = CFF_Get_String( &cff->string_index, |
| dict->weight, |
| psnames ); |
| |
| /*******************************************************************/ |
| /* */ |
| /* Compute face flags. */ |
| /* */ |
| flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ |
| FT_FACE_FLAG_HORIZONTAL; /* horizontal data */ |
| |
| if ( sfnt_format ) |
| flags |= FT_FACE_FLAG_SFNT; |
| |
| /* fixed width font? */ |
| if ( dict->is_fixed_pitch ) |
| flags |= FT_FACE_FLAG_FIXED_WIDTH; |
| |
| /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ |
| #if 0 |
| /* kerning available? */ |
| if ( face->kern_pairs ) |
| flags |= FT_FACE_FLAG_KERNING; |
| #endif |
| |
| #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES |
| flags |= FT_FACE_FLAG_GLYPH_NAMES; |
| #endif |
| |
| root->face_flags = flags; |
| |
| /*******************************************************************/ |
| /* */ |
| /* Compute style flags. */ |
| /* */ |
| flags = 0; |
| |
| if ( dict->italic_angle ) |
| flags |= FT_STYLE_FLAG_ITALIC; |
| |
| /* XXX: may not be correct */ |
| if ( cff->top_font.private_dict.force_bold ) |
| flags |= FT_STYLE_FLAG_BOLD; |
| |
| root->style_flags = flags; |
| |
| /* set the charmaps if any */ |
| if ( sfnt_format ) |
| { |
| /*****************************************************************/ |
| /* */ |
| /* Polish the charmaps. */ |
| /* */ |
| /* Try to set the charmap encoding according to the platform & */ |
| /* encoding ID of each charmap. */ |
| /* */ |
| TT_CharMap charmap; |
| FT_Int n; |
| |
| |
| charmap = face->charmaps; |
| root->num_charmaps = face->num_charmaps; |
| |
| /* allocate table of pointers */ |
| if ( ALLOC_ARRAY( root->charmaps, root->num_charmaps, FT_CharMap ) ) |
| goto Exit; |
| |
| for ( n = 0; n < root->num_charmaps; n++, charmap++ ) |
| { |
| FT_Int platform = charmap->cmap.platformID; |
| FT_Int encoding = charmap->cmap.platformEncodingID; |
| |
| |
| charmap->root.face = (FT_Face)face; |
| charmap->root.platform_id = (FT_UShort)platform; |
| charmap->root.encoding_id = (FT_UShort)encoding; |
| charmap->root.encoding = find_encoding( platform, encoding ); |
| |
| /* now, set root->charmap with a unicode charmap */ |
| /* wherever available */ |
| if ( !root->charmap && |
| charmap->root.encoding == ft_encoding_unicode ) |
| root->charmap = (FT_CharMap)charmap; |
| |
| root->charmaps[n] = (FT_CharMap)charmap; |
| } |
| } |
| } |
| } |
| |
| Exit: |
| return error; |
| |
| Bad_Format: |
| error = CFF_Err_Unknown_File_Format; |
| goto Exit; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| CFF_Face_Done( CFF_Face face ) |
| { |
| FT_Memory memory = face->root.memory; |
| SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
| |
| |
| if ( sfnt ) |
| sfnt->done_face( face ); |
| |
| { |
| CFF_Font cff = (CFF_Font)face->extra.data; |
| |
| |
| if ( cff ) |
| { |
| CFF_Done_Font( cff ); |
| FREE( face->extra.data ); |
| } |
| } |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| CFF_Driver_Init( CFF_Driver driver ) |
| { |
| /* init extension registry if needed */ |
| |
| #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE |
| |
| return TT_Init_Extensions( driver ); |
| |
| #else |
| |
| FT_UNUSED( driver ); |
| |
| return CFF_Err_Ok; |
| |
| #endif |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| CFF_Driver_Done( CFF_Driver driver ) |
| { |
| /* destroy extensions registry if needed */ |
| |
| #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE |
| |
| TT_Done_Extensions( driver ); |
| |
| #else |
| |
| FT_UNUSED( driver ); |
| |
| #endif |
| } |
| |
| |
| /* END */ |