| /**************************************************************************** |
| * |
| * t42drivr.c |
| * |
| * High-level Type 42 driver interface (body). |
| * |
| * Copyright (C) 2002-2021 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. |
| * |
| */ |
| |
| |
| /************************************************************************** |
| * |
| * This driver implements Type42 fonts as described in the |
| * Technical Note #5012 from Adobe, with these limitations: |
| * |
| * 1) CID Fonts are not currently supported. |
| * 2) Incremental fonts making use of the GlyphDirectory keyword |
| * will be loaded, but the rendering will be using the TrueType |
| * tables. |
| * 3) As for Type1 fonts, CDevProc is not supported. |
| * 4) The Metrics dictionary is not supported. |
| * 5) AFM metrics are not supported. |
| * |
| * In other words, this driver supports Type42 fonts derived from |
| * TrueType fonts in a non-CID manner, as done by usual conversion |
| * programs. |
| * |
| */ |
| |
| |
| #include "t42drivr.h" |
| #include "t42objs.h" |
| #include "t42error.h" |
| #include <freetype/internal/ftdebug.h> |
| |
| #include <freetype/internal/services/svfntfmt.h> |
| #include <freetype/internal/services/svgldict.h> |
| #include <freetype/internal/services/svpostnm.h> |
| #include <freetype/internal/services/svpsinfo.h> |
| |
| #undef FT_COMPONENT |
| #define FT_COMPONENT t42 |
| |
| |
| /* |
| * |
| * GLYPH DICT SERVICE |
| * |
| */ |
| |
| static FT_Error |
| t42_get_glyph_name( T42_Face face, |
| FT_UInt glyph_index, |
| FT_Pointer buffer, |
| FT_UInt buffer_max ) |
| { |
| FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max ); |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_UInt |
| t42_get_name_index( T42_Face face, |
| const FT_String* glyph_name ) |
| { |
| FT_Int i; |
| |
| |
| for ( i = 0; i < face->type1.num_glyphs; i++ ) |
| { |
| FT_String* gname = face->type1.glyph_names[i]; |
| |
| |
| if ( glyph_name[0] == gname[0] && !ft_strcmp( glyph_name, gname ) ) |
| return (FT_UInt)ft_strtol( (const char *)face->type1.charstrings[i], |
| NULL, 10 ); |
| } |
| |
| return 0; |
| } |
| |
| |
| static const FT_Service_GlyphDictRec t42_service_glyph_dict = |
| { |
| (FT_GlyphDict_GetNameFunc) t42_get_glyph_name, /* get_name */ |
| (FT_GlyphDict_NameIndexFunc)t42_get_name_index /* name_index */ |
| }; |
| |
| |
| /* |
| * |
| * POSTSCRIPT NAME SERVICE |
| * |
| */ |
| |
| static const char* |
| t42_get_ps_font_name( T42_Face face ) |
| { |
| return (const char*)face->type1.font_name; |
| } |
| |
| |
| static const FT_Service_PsFontNameRec t42_service_ps_font_name = |
| { |
| (FT_PsName_GetFunc)t42_get_ps_font_name /* get_ps_font_name */ |
| }; |
| |
| |
| /* |
| * |
| * POSTSCRIPT INFO SERVICE |
| * |
| */ |
| |
| static FT_Error |
| t42_ps_get_font_info( FT_Face face, |
| PS_FontInfoRec* afont_info ) |
| { |
| *afont_info = ((T42_Face)face)->type1.font_info; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_Error |
| t42_ps_get_font_extra( FT_Face face, |
| PS_FontExtraRec* afont_extra ) |
| { |
| *afont_extra = ((T42_Face)face)->type1.font_extra; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_Int |
| t42_ps_has_glyph_names( FT_Face face ) |
| { |
| FT_UNUSED( face ); |
| |
| return 1; |
| } |
| |
| |
| static FT_Error |
| t42_ps_get_font_private( FT_Face face, |
| PS_PrivateRec* afont_private ) |
| { |
| *afont_private = ((T42_Face)face)->type1.private_dict; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static const FT_Service_PsInfoRec t42_service_ps_info = |
| { |
| (PS_GetFontInfoFunc) t42_ps_get_font_info, /* ps_get_font_info */ |
| (PS_GetFontExtraFunc) t42_ps_get_font_extra, /* ps_get_font_extra */ |
| (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names, /* ps_has_glyph_names */ |
| (PS_GetFontPrivateFunc)t42_ps_get_font_private, /* ps_get_font_private */ |
| /* not implemented */ |
| (PS_GetFontValueFunc) NULL /* ps_get_font_value */ |
| }; |
| |
| |
| /* |
| * |
| * SERVICE LIST |
| * |
| */ |
| |
| static const FT_ServiceDescRec t42_services[] = |
| { |
| { FT_SERVICE_ID_GLYPH_DICT, &t42_service_glyph_dict }, |
| { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name }, |
| { FT_SERVICE_ID_POSTSCRIPT_INFO, &t42_service_ps_info }, |
| { FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TYPE_42 }, |
| { NULL, NULL } |
| }; |
| |
| |
| FT_CALLBACK_DEF( FT_Module_Interface ) |
| T42_Get_Interface( FT_Module module, |
| const FT_String* t42_interface ) |
| { |
| FT_UNUSED( module ); |
| |
| return ft_service_list_lookup( t42_services, t42_interface ); |
| } |
| |
| |
| const FT_Driver_ClassRec t42_driver_class = |
| { |
| { |
| FT_MODULE_FONT_DRIVER | |
| FT_MODULE_DRIVER_SCALABLE | |
| #ifdef TT_USE_BYTECODE_INTERPRETER |
| FT_MODULE_DRIVER_HAS_HINTER, |
| #else |
| 0, |
| #endif |
| |
| sizeof ( T42_DriverRec ), |
| |
| "type42", |
| 0x10000L, |
| 0x20000L, |
| |
| NULL, /* module-specific interface */ |
| |
| T42_Driver_Init, /* FT_Module_Constructor module_init */ |
| T42_Driver_Done, /* FT_Module_Destructor module_done */ |
| T42_Get_Interface, /* FT_Module_Requester get_interface */ |
| }, |
| |
| sizeof ( T42_FaceRec ), |
| sizeof ( T42_SizeRec ), |
| sizeof ( T42_GlyphSlotRec ), |
| |
| T42_Face_Init, /* FT_Face_InitFunc init_face */ |
| T42_Face_Done, /* FT_Face_DoneFunc done_face */ |
| T42_Size_Init, /* FT_Size_InitFunc init_size */ |
| T42_Size_Done, /* FT_Size_DoneFunc done_size */ |
| T42_GlyphSlot_Init, /* FT_Slot_InitFunc init_slot */ |
| T42_GlyphSlot_Done, /* FT_Slot_DoneFunc done_slot */ |
| |
| T42_GlyphSlot_Load, /* FT_Slot_LoadFunc load_glyph */ |
| |
| NULL, /* FT_Face_GetKerningFunc get_kerning */ |
| NULL, /* FT_Face_AttachFunc attach_file */ |
| NULL, /* FT_Face_GetAdvancesFunc get_advances */ |
| |
| T42_Size_Request, /* FT_Size_RequestFunc request_size */ |
| T42_Size_Select /* FT_Size_SelectFunc select_size */ |
| }; |
| |
| |
| /* END */ |
