/***************************************************************************/ | |
/* */ | |
/* t42drivr.c */ | |
/* */ | |
/* High-level Type 42 driver interface (body). */ | |
/* */ | |
/* Copyright 2002-2015 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 FT_INTERNAL_DEBUG_H | |
#include FT_SERVICE_FONT_FORMAT_H | |
#include FT_SERVICE_GLYPH_DICT_H | |
#include FT_SERVICE_POSTSCRIPT_NAME_H | |
#include FT_SERVICE_POSTSCRIPT_INFO_H | |
#undef FT_COMPONENT | |
#define FT_COMPONENT trace_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, | |
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_atol( (const char *)face->type1.charstrings[i] ); | |
} | |
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, | |
0, /* 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 */ | |
0, /* FT_Face_GetKerningFunc get_kerning */ | |
0, /* FT_Face_AttachFunc attach_file */ | |
0, /* FT_Face_GetAdvancesFunc get_advances */ | |
T42_Size_Request, /* FT_Size_RequestFunc request_size */ | |
T42_Size_Select /* FT_Size_SelectFunc select_size */ | |
}; | |
/* END */ |