| /***************************************************************************/ |
| /* */ |
| /* cffdrivr.c */ |
| /* */ |
| /* OpenType font driver implementation (body). */ |
| /* */ |
| /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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_FREETYPE_H |
| #include FT_INTERNAL_DEBUG_H |
| #include FT_INTERNAL_STREAM_H |
| #include FT_INTERNAL_SFNT_H |
| #include FT_SERVICE_CID_H |
| #include FT_SERVICE_POSTSCRIPT_CMAPS_H |
| #include FT_SERVICE_POSTSCRIPT_INFO_H |
| #include FT_SERVICE_POSTSCRIPT_NAME_H |
| #include FT_SERVICE_TT_CMAP_H |
| |
| #include "cffdrivr.h" |
| #include "cffgload.h" |
| #include "cffload.h" |
| #include "cffcmap.h" |
| #include "cffparse.h" |
| |
| #include "cfferrs.h" |
| #include "cffpic.h" |
| |
| #include FT_SERVICE_XFREE86_NAME_H |
| #include FT_SERVICE_GLYPH_DICT_H |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* 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_cffdriver |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /**** ****/ |
| /**** ****/ |
| /**** F A C E S ****/ |
| /**** ****/ |
| /**** ****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| #undef PAIR_TAG |
| #define PAIR_TAG( left, right ) ( ( (FT_ULong)left << 16 ) | \ |
| (FT_ULong)right ) |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* cff_get_kerning */ |
| /* */ |
| /* <Description> */ |
| /* A driver method used to return the kerning vector between two */ |
| /* glyphs of the same face. */ |
| /* */ |
| /* <Input> */ |
| /* face :: A handle to the source face object. */ |
| /* */ |
| /* left_glyph :: The index of the left glyph in the kern pair. */ |
| /* */ |
| /* right_glyph :: The index of the right glyph in the kern pair. */ |
| /* */ |
| /* <Output> */ |
| /* kerning :: The kerning vector. This is in font units for */ |
| /* scalable formats, and in pixels for fixed-sizes */ |
| /* formats. */ |
| /* */ |
| /* <Return> */ |
| /* FreeType error code. 0 means success. */ |
| /* */ |
| /* <Note> */ |
| /* Only horizontal layouts (left-to-right & right-to-left) are */ |
| /* supported by this function. Other layouts, or more sophisticated */ |
| /* kernings, are out of scope of this method (the basic driver */ |
| /* interface is meant to be simple). */ |
| /* */ |
| /* They can be implemented by format-specific interfaces. */ |
| /* */ |
| FT_CALLBACK_DEF( FT_Error ) |
| cff_get_kerning( FT_Face ttface, /* TT_Face */ |
| FT_UInt left_glyph, |
| FT_UInt right_glyph, |
| FT_Vector* kerning ) |
| { |
| TT_Face face = (TT_Face)ttface; |
| SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
| |
| |
| kerning->x = 0; |
| kerning->y = 0; |
| |
| if ( sfnt ) |
| kerning->x = sfnt->get_kerning( face, left_glyph, right_glyph ); |
| |
| return CFF_Err_Ok; |
| } |
| |
| |
| #undef PAIR_TAG |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* Load_Glyph */ |
| /* */ |
| /* <Description> */ |
| /* A driver method used to load a glyph within a given glyph slot. */ |
| /* */ |
| /* <Input> */ |
| /* slot :: A handle to the target slot object where the glyph */ |
| /* will be loaded. */ |
| /* */ |
| /* size :: A handle to the source face size at which the glyph */ |
| /* must be scaled, loaded, etc. */ |
| /* */ |
| /* glyph_index :: The index of the glyph in the font file. */ |
| /* */ |
| /* load_flags :: A flag indicating what to load for this glyph. The */ |
| /* FT_LOAD_??? constants can be used to control the */ |
| /* glyph loading process (e.g., whether the outline */ |
| /* should be scaled, whether to load bitmaps or not, */ |
| /* whether to hint the outline, etc). */ |
| /* */ |
| /* <Return> */ |
| /* FreeType error code. 0 means success. */ |
| /* */ |
| FT_CALLBACK_DEF( FT_Error ) |
| Load_Glyph( FT_GlyphSlot cffslot, /* CFF_GlyphSlot */ |
| FT_Size cffsize, /* CFF_Size */ |
| FT_UInt glyph_index, |
| FT_Int32 load_flags ) |
| { |
| FT_Error error; |
| CFF_GlyphSlot slot = (CFF_GlyphSlot)cffslot; |
| CFF_Size size = (CFF_Size)cffsize; |
| |
| |
| if ( !slot ) |
| return CFF_Err_Invalid_Slot_Handle; |
| |
| /* check whether we want a scaled outline or bitmap */ |
| if ( !size ) |
| load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; |
| |
| /* reset the size object if necessary */ |
| if ( load_flags & FT_LOAD_NO_SCALE ) |
| size = NULL; |
| |
| if ( size ) |
| { |
| /* these two objects must have the same parent */ |
| if ( cffsize->face != cffslot->face ) |
| return CFF_Err_Invalid_Face_Handle; |
| } |
| |
| /* now load the glyph outline if necessary */ |
| error = cff_slot_load( slot, size, glyph_index, load_flags ); |
| |
| /* force drop-out mode to 2 - irrelevant now */ |
| /* slot->outline.dropout_mode = 2; */ |
| |
| return error; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_Error ) |
| cff_get_advances( FT_Face face, |
| FT_UInt start, |
| FT_UInt count, |
| FT_Int32 flags, |
| FT_Fixed* advances ) |
| { |
| FT_UInt nn; |
| FT_Error error = CFF_Err_Ok; |
| FT_GlyphSlot slot = face->glyph; |
| |
| |
| flags |= (FT_UInt32)FT_LOAD_ADVANCE_ONLY; |
| |
| for ( nn = 0; nn < count; nn++ ) |
| { |
| error = Load_Glyph( slot, face->size, start + nn, flags ); |
| if ( error ) |
| break; |
| |
| advances[nn] = ( flags & FT_LOAD_VERTICAL_LAYOUT ) |
| ? slot->linearVertAdvance |
| : slot->linearHoriAdvance; |
| } |
| |
| return error; |
| } |
| |
| |
| /* |
| * GLYPH DICT SERVICE |
| * |
| */ |
| |
| static FT_Error |
| cff_get_glyph_name( CFF_Face face, |
| FT_UInt glyph_index, |
| FT_Pointer buffer, |
| FT_UInt buffer_max ) |
| { |
| CFF_Font font = (CFF_Font)face->extra.data; |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| FT_String* gname; |
| FT_UShort sid; |
| FT_Service_PsCMaps psnames; |
| FT_Error error; |
| |
| |
| FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); |
| if ( !psnames ) |
| { |
| FT_ERROR(( "cff_get_glyph_name:" |
| " cannot get glyph name from CFF & CEF fonts\n" |
| " " |
| " without the `PSNames' module\n" )); |
| error = CFF_Err_Unknown_File_Format; |
| goto Exit; |
| } |
| |
| /* first, locate the sid in the charset table */ |
| sid = font->charset.sids[glyph_index]; |
| |
| /* now, lookup the name itself */ |
| gname = cff_index_get_sid_string( &font->string_index, sid, psnames ); |
| |
| if ( gname ) |
| FT_STRCPYN( buffer, gname, buffer_max ); |
| |
| FT_FREE( gname ); |
| error = CFF_Err_Ok; |
| |
| Exit: |
| return error; |
| } |
| |
| |
| static FT_UInt |
| cff_get_name_index( CFF_Face face, |
| FT_String* glyph_name ) |
| { |
| CFF_Font cff; |
| CFF_Charset charset; |
| FT_Service_PsCMaps psnames; |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| FT_String* name; |
| FT_UShort sid; |
| FT_UInt i; |
| FT_Int result; |
| |
| |
| cff = (CFF_FontRec *)face->extra.data; |
| charset = &cff->charset; |
| |
| FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); |
| if ( !psnames ) |
| return 0; |
| |
| for ( i = 0; i < cff->num_glyphs; i++ ) |
| { |
| sid = charset->sids[i]; |
| |
| if ( sid > 390 ) |
| name = cff_index_get_name( &cff->string_index, sid - 391 ); |
| else |
| name = (FT_String *)psnames->adobe_std_strings( sid ); |
| |
| if ( !name ) |
| continue; |
| |
| result = ft_strcmp( glyph_name, name ); |
| |
| if ( sid > 390 ) |
| FT_FREE( name ); |
| |
| if ( !result ) |
| return i; |
| } |
| |
| return 0; |
| } |
| |
| |
| FT_DEFINE_SERVICE_GLYPHDICTREC(cff_service_glyph_dict, |
| (FT_GlyphDict_GetNameFunc) cff_get_glyph_name, |
| (FT_GlyphDict_NameIndexFunc)cff_get_name_index |
| ) |
| |
| |
| /* |
| * POSTSCRIPT INFO SERVICE |
| * |
| */ |
| |
| static FT_Int |
| cff_ps_has_glyph_names( FT_Face face ) |
| { |
| return ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES ) > 0; |
| } |
| |
| |
| static FT_Error |
| cff_ps_get_font_info( CFF_Face face, |
| PS_FontInfoRec* afont_info ) |
| { |
| CFF_Font cff = (CFF_Font)face->extra.data; |
| FT_Error error = FT_Err_Ok; |
| |
| |
| if ( cff && cff->font_info == NULL ) |
| { |
| CFF_FontRecDict dict = &cff->top_font.font_dict; |
| PS_FontInfoRec *font_info; |
| FT_Memory memory = face->root.memory; |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
| |
| |
| if ( FT_ALLOC( font_info, sizeof ( *font_info ) ) ) |
| goto Fail; |
| |
| font_info->version = cff_index_get_sid_string( &cff->string_index, |
| dict->version, |
| psnames ); |
| font_info->notice = cff_index_get_sid_string( &cff->string_index, |
| dict->notice, |
| psnames ); |
| font_info->full_name = cff_index_get_sid_string( &cff->string_index, |
| dict->full_name, |
| psnames ); |
| font_info->family_name = cff_index_get_sid_string( &cff->string_index, |
| dict->family_name, |
| psnames ); |
| font_info->weight = cff_index_get_sid_string( &cff->string_index, |
| dict->weight, |
| psnames ); |
| font_info->italic_angle = dict->italic_angle; |
| font_info->is_fixed_pitch = dict->is_fixed_pitch; |
| font_info->underline_position = (FT_Short)dict->underline_position; |
| font_info->underline_thickness = (FT_Short)dict->underline_thickness; |
| |
| cff->font_info = font_info; |
| } |
| |
| if ( cff ) |
| *afont_info = *cff->font_info; |
| |
| Fail: |
| return error; |
| } |
| |
| |
| FT_DEFINE_SERVICE_PSINFOREC(cff_service_ps_info, |
| (PS_GetFontInfoFunc) cff_ps_get_font_info, |
| (PS_GetFontExtraFunc) NULL, |
| (PS_HasGlyphNamesFunc) cff_ps_has_glyph_names, |
| (PS_GetFontPrivateFunc)NULL /* unsupported with CFF fonts */ |
| ) |
| |
| |
| /* |
| * POSTSCRIPT NAME SERVICE |
| * |
| */ |
| |
| static const char* |
| cff_get_ps_name( CFF_Face face ) |
| { |
| CFF_Font cff = (CFF_Font)face->extra.data; |
| |
| |
| return (const char*)cff->font_name; |
| } |
| |
| |
| FT_DEFINE_SERVICE_PSFONTNAMEREC(cff_service_ps_name, |
| (FT_PsName_GetFunc)cff_get_ps_name |
| ) |
| |
| |
| /* |
| * TT CMAP INFO |
| * |
| * If the charmap is a synthetic Unicode encoding cmap or |
| * a Type 1 standard (or expert) encoding cmap, hide TT CMAP INFO |
| * service defined in SFNT module. |
| * |
| * Otherwise call the service function in the sfnt module. |
| * |
| */ |
| static FT_Error |
| cff_get_cmap_info( FT_CharMap charmap, |
| TT_CMapInfo *cmap_info ) |
| { |
| FT_CMap cmap = FT_CMAP( charmap ); |
| FT_Error error = CFF_Err_Ok; |
| FT_Face face = FT_CMAP_FACE( cmap ); |
| FT_Library library = FT_FACE_LIBRARY( face ); |
| |
| |
| cmap_info->language = 0; |
| cmap_info->format = 0; |
| |
| if ( cmap->clazz != &FT_CFF_CMAP_ENCODING_CLASS_REC_GET && |
| cmap->clazz != &FT_CFF_CMAP_UNICODE_CLASS_REC_GET ) |
| { |
| FT_Module sfnt = FT_Get_Module( library, "sfnt" ); |
| FT_Service_TTCMaps service = |
| (FT_Service_TTCMaps)ft_module_get_service( sfnt, |
| FT_SERVICE_ID_TT_CMAP ); |
| |
| |
| if ( service && service->get_cmap_info ) |
| error = service->get_cmap_info( charmap, cmap_info ); |
| } |
| |
| return error; |
| } |
| |
| |
| FT_DEFINE_SERVICE_TTCMAPSREC(cff_service_get_cmap_info, |
| (TT_CMap_Info_GetFunc)cff_get_cmap_info |
| ) |
| |
| |
| /* |
| * CID INFO SERVICE |
| * |
| */ |
| static FT_Error |
| cff_get_ros( CFF_Face face, |
| const char* *registry, |
| const char* *ordering, |
| FT_Int *supplement ) |
| { |
| FT_Error error = CFF_Err_Ok; |
| CFF_Font cff = (CFF_Font)face->extra.data; |
| |
| |
| if ( cff ) |
| { |
| CFF_FontRecDict dict = &cff->top_font.font_dict; |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
| |
| |
| if ( dict->cid_registry == 0xFFFFU ) |
| { |
| error = CFF_Err_Invalid_Argument; |
| goto Fail; |
| } |
| |
| if ( registry ) |
| { |
| if ( cff->registry == NULL ) |
| cff->registry = cff_index_get_sid_string( &cff->string_index, |
| dict->cid_registry, |
| psnames ); |
| *registry = cff->registry; |
| } |
| |
| if ( ordering ) |
| { |
| if ( cff->ordering == NULL ) |
| cff->ordering = cff_index_get_sid_string( &cff->string_index, |
| dict->cid_ordering, |
| psnames ); |
| *ordering = cff->ordering; |
| } |
| |
| /* |
| * XXX: According to Adobe TechNote #5176, the supplement in CFF |
| * can be a real number. We truncate it to fit public API |
| * since freetype-2.3.6. |
| */ |
| if ( supplement ) |
| { |
| if ( dict->cid_supplement < FT_INT_MIN || |
| dict->cid_supplement > FT_INT_MAX ) |
| FT_TRACE1(( "cff_get_ros: too large supplement %d is truncated\n", |
| dict->cid_supplement )); |
| *supplement = (FT_Int)dict->cid_supplement; |
| } |
| } |
| |
| Fail: |
| return error; |
| } |
| |
| |
| static FT_Error |
| cff_get_is_cid( CFF_Face face, |
| FT_Bool *is_cid ) |
| { |
| FT_Error error = CFF_Err_Ok; |
| CFF_Font cff = (CFF_Font)face->extra.data; |
| |
| |
| *is_cid = 0; |
| |
| if ( cff ) |
| { |
| CFF_FontRecDict dict = &cff->top_font.font_dict; |
| |
| |
| if ( dict->cid_registry != 0xFFFFU ) |
| *is_cid = 1; |
| } |
| |
| return error; |
| } |
| |
| |
| static FT_Error |
| cff_get_cid_from_glyph_index( CFF_Face face, |
| FT_UInt glyph_index, |
| FT_UInt *cid ) |
| { |
| FT_Error error = CFF_Err_Ok; |
| CFF_Font cff; |
| |
| |
| cff = (CFF_Font)face->extra.data; |
| |
| if ( cff ) |
| { |
| FT_UInt c; |
| CFF_FontRecDict dict = &cff->top_font.font_dict; |
| |
| |
| if ( dict->cid_registry == 0xFFFFU ) |
| { |
| error = CFF_Err_Invalid_Argument; |
| goto Fail; |
| } |
| |
| if ( glyph_index > cff->num_glyphs ) |
| { |
| error = CFF_Err_Invalid_Argument; |
| goto Fail; |
| } |
| |
| c = cff->charset.sids[glyph_index]; |
| |
| if ( cid ) |
| *cid = c; |
| } |
| |
| Fail: |
| return error; |
| } |
| |
| |
| FT_DEFINE_SERVICE_CIDREC(cff_service_cid_info, |
| (FT_CID_GetRegistryOrderingSupplementFunc)cff_get_ros, |
| (FT_CID_GetIsInternallyCIDKeyedFunc) cff_get_is_cid, |
| (FT_CID_GetCIDFromGlyphIndexFunc) cff_get_cid_from_glyph_index |
| ) |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /**** ****/ |
| /**** ****/ |
| /**** D R I V E R I N T E R F A C E ****/ |
| /**** ****/ |
| /**** ****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES |
| FT_DEFINE_SERVICEDESCREC6(cff_services, |
| FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_CFF, |
| FT_SERVICE_ID_POSTSCRIPT_INFO, &FT_CFF_SERVICE_PS_INFO_GET, |
| FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &FT_CFF_SERVICE_PS_NAME_GET, |
| FT_SERVICE_ID_GLYPH_DICT, &FT_CFF_SERVICE_GLYPH_DICT_GET, |
| FT_SERVICE_ID_TT_CMAP, &FT_CFF_SERVICE_GET_CMAP_INFO_GET, |
| FT_SERVICE_ID_CID, &FT_CFF_SERVICE_CID_INFO_GET |
| ) |
| #else |
| FT_DEFINE_SERVICEDESCREC5(cff_services, |
| FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_CFF, |
| FT_SERVICE_ID_POSTSCRIPT_INFO, &FT_CFF_SERVICE_PS_INFO_GET, |
| FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &FT_CFF_SERVICE_PS_NAME_GET, |
| FT_SERVICE_ID_TT_CMAP, &FT_CFF_SERVICE_GET_CMAP_INFO_GET, |
| FT_SERVICE_ID_CID, &FT_CFF_SERVICE_CID_INFO_GET |
| ) |
| #endif |
| |
| FT_CALLBACK_DEF( FT_Module_Interface ) |
| cff_get_interface( FT_Module driver, /* CFF_Driver */ |
| const char* module_interface ) |
| { |
| FT_Module sfnt; |
| FT_Module_Interface result; |
| |
| |
| result = ft_service_list_lookup( FT_CFF_SERVICES_GET, module_interface ); |
| if ( result != NULL ) |
| return result; |
| |
| if ( !driver ) |
| return NULL; |
| |
| /* we pass our request to the `sfnt' module */ |
| sfnt = FT_Get_Module( driver->library, "sfnt" ); |
| |
| return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0; |
| } |
| |
| |
| /* The FT_DriverInterface structure is defined in ftdriver.h. */ |
| |
| #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
| #define CFF_SIZE_SELECT cff_size_select |
| #else |
| #define CFF_SIZE_SELECT 0 |
| #endif |
| |
| FT_DEFINE_DRIVER(cff_driver_class, |
| FT_MODULE_FONT_DRIVER | |
| FT_MODULE_DRIVER_SCALABLE | |
| FT_MODULE_DRIVER_HAS_HINTER, |
| |
| sizeof( CFF_DriverRec ), |
| "cff", |
| 0x10000L, |
| 0x20000L, |
| |
| 0, /* module-specific interface */ |
| |
| cff_driver_init, |
| cff_driver_done, |
| cff_get_interface, |
| |
| /* now the specific driver fields */ |
| sizeof( TT_FaceRec ), |
| sizeof( CFF_SizeRec ), |
| sizeof( CFF_GlyphSlotRec ), |
| |
| cff_face_init, |
| cff_face_done, |
| cff_size_init, |
| cff_size_done, |
| cff_slot_init, |
| cff_slot_done, |
| |
| ft_stub_set_char_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */ |
| ft_stub_set_pixel_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */ |
| |
| Load_Glyph, |
| |
| cff_get_kerning, |
| 0, /* FT_Face_AttachFunc */ |
| cff_get_advances, /* FT_Face_GetAdvancesFunc */ |
| |
| cff_size_request, |
| |
| CFF_SIZE_SELECT |
| ) |
| |
| |
| /* END */ |
