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/****************************************************************************
*
* cidriver.c
*
* CID driver interface (body).
*
* Copyright (C) 1996-2024 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 "cidriver.h"
#include "cidgload.h"
#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftpsprop.h>
#include "ciderrs.h"
#include <freetype/internal/services/svpostnm.h>
#include <freetype/internal/services/svfntfmt.h>
#include <freetype/internal/services/svpsinfo.h>
#include <freetype/internal/services/svcid.h>
#include <freetype/internal/services/svprop.h>
#include <freetype/ftdriver.h>
#include <freetype/internal/psaux.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 ciddriver
/*
* POSTSCRIPT NAME SERVICE
*
*/
FT_CALLBACK_DEF( const char* )
cid_get_postscript_name( FT_Face face ) /* CID_Face */
{
CID_Face cidface = (CID_Face)face;
const char* result = cidface->cid.cid_font_name;
if ( result && result[0] == '/' )
result++;
return result;
}
static const FT_Service_PsFontNameRec cid_service_ps_name =
{
(FT_PsName_GetFunc)cid_get_postscript_name /* get_ps_font_name */
};
/*
* POSTSCRIPT INFO SERVICE
*
*/
FT_CALLBACK_DEF( FT_Error )
cid_ps_get_font_info( FT_Face face, /* CID_Face */
PS_FontInfoRec* afont_info )
{
*afont_info = ( (CID_Face)face )->cid.font_info;
return FT_Err_Ok;
}
FT_CALLBACK_DEF( FT_Error )
cid_ps_get_font_extra( FT_Face face, /* CID_Face */
PS_FontExtraRec* afont_extra )
{
*afont_extra = ( (CID_Face)face )->font_extra;
return FT_Err_Ok;
}
static const FT_Service_PsInfoRec cid_service_ps_info =
{
cid_ps_get_font_info, /* PS_GetFontInfoFunc ps_get_font_info */
cid_ps_get_font_extra, /* PS_GetFontExtraFunc ps_get_font_extra */
/* unsupported with CID fonts */
NULL, /* PS_HasGlyphNamesFunc ps_has_glyph_names */
/* unsupported */
NULL, /* PS_GetFontPrivateFunc ps_get_font_private */
/* not implemented */
NULL /* PS_GetFontValueFunc ps_get_font_value */
};
/*
* CID INFO SERVICE
*
*/
FT_CALLBACK_DEF( FT_Error )
cid_get_ros( FT_Face face, /* CID_Face */
const char* *registry,
const char* *ordering,
FT_Int *supplement )
{
CID_Face cidface = (CID_Face)face;
CID_FaceInfo cid = &cidface->cid;
if ( registry )
*registry = cid->registry;
if ( ordering )
*ordering = cid->ordering;
if ( supplement )
*supplement = cid->supplement;
return FT_Err_Ok;
}
FT_CALLBACK_DEF( FT_Error )
cid_get_is_cid( FT_Face face, /* CID_Face */
FT_Bool *is_cid )
{
FT_Error error = FT_Err_Ok;
FT_UNUSED( face );
/*
* XXX: If the ROS is Adobe-Identity-H or -V,
* the font has no reliable information about
* its glyph collection. Should we not set
* *is_cid in such cases?
*/
if ( is_cid )
*is_cid = 1;
return error;
}
FT_CALLBACK_DEF( FT_Error )
cid_get_cid_from_glyph_index( FT_Face face, /* CID_Face */
FT_UInt glyph_index,
FT_UInt *cid )
{
FT_Error error = FT_Err_Ok;
CID_Face cidface = (CID_Face)face;
/*
* Currently, FreeType does not support incrementally-defined, CID-keyed
* fonts that store the glyph description data in a `/GlyphDirectory`
* array or dictionary. Fonts loaded by the incremental loading feature
* are thus not handled here.
*/
error = cid_compute_fd_and_offsets( cidface, glyph_index,
NULL, NULL, NULL );
if ( error )
*cid = 0;
else
*cid = glyph_index;
return error;
}
static const FT_Service_CIDRec cid_service_cid_info =
{
cid_get_ros,
/* FT_CID_GetRegistryOrderingSupplementFunc get_ros */
cid_get_is_cid,
/* FT_CID_GetIsInternallyCIDKeyedFunc get_is_cid */
cid_get_cid_from_glyph_index
/* FT_CID_GetCIDFromGlyphIndexFunc get_cid_from_glyph_index */
};
/*
* PROPERTY SERVICE
*
*/
FT_DEFINE_SERVICE_PROPERTIESREC(
cid_service_properties,
ps_property_set, /* FT_Properties_SetFunc set_property */
ps_property_get /* FT_Properties_GetFunc get_property */
)
/*
* SERVICE LIST
*
*/
static const FT_ServiceDescRec cid_services[] =
{
{ FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CID },
{ FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cid_service_ps_name },
{ FT_SERVICE_ID_POSTSCRIPT_INFO, &cid_service_ps_info },
{ FT_SERVICE_ID_CID, &cid_service_cid_info },
{ FT_SERVICE_ID_PROPERTIES, &cid_service_properties },
{ NULL, NULL }
};
FT_CALLBACK_DEF( FT_Module_Interface )
cid_get_interface( FT_Module module,
const char* cid_interface )
{
FT_UNUSED( module );
return ft_service_list_lookup( cid_services, cid_interface );
}
FT_CALLBACK_TABLE_DEF
const FT_Driver_ClassRec t1cid_driver_class =
{
{
FT_MODULE_FONT_DRIVER |
FT_MODULE_DRIVER_SCALABLE |
FT_MODULE_DRIVER_HAS_HINTER,
sizeof ( PS_DriverRec ),
"t1cid", /* module name */
0x10000L, /* version 1.0 of driver */
0x20000L, /* requires FreeType 2.0 */
NULL, /* module-specific interface */
cid_driver_init, /* FT_Module_Constructor module_init */
cid_driver_done, /* FT_Module_Destructor module_done */
cid_get_interface /* FT_Module_Requester get_interface */
},
sizeof ( CID_FaceRec ),
sizeof ( CID_SizeRec ),
sizeof ( CID_GlyphSlotRec ),
cid_face_init, /* FT_Face_InitFunc init_face */
cid_face_done, /* FT_Face_DoneFunc done_face */
cid_size_init, /* FT_Size_InitFunc init_size */
cid_size_done, /* FT_Size_DoneFunc done_size */
cid_slot_init, /* FT_Slot_InitFunc init_slot */
cid_slot_done, /* FT_Slot_DoneFunc done_slot */
cid_slot_load_glyph, /* FT_Slot_LoadFunc load_glyph */
NULL, /* FT_Face_GetKerningFunc get_kerning */
NULL, /* FT_Face_AttachFunc attach_file */
NULL, /* FT_Face_GetAdvancesFunc get_advances */
cid_size_request, /* FT_Size_RequestFunc request_size */
NULL /* FT_Size_SelectFunc select_size */
};
/* END */