ref: a4d9206754e6c68dc768e05b6676268149c197f1
dir: /src/cff/cffdrivr.c/
/****************************************************************************
*
* cffdrivr.c
*
* OpenType font driver implementation (body).
*
* Copyright (C) 1996-2020 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 <freetype/freetype.h>
#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftstream.h>
#include <freetype/internal/sfnt.h>
#include <freetype/internal/psaux.h>
#include <freetype/internal/ftpsprop.h>
#include <freetype/internal/services/svcid.h>
#include <freetype/internal/services/svpsinfo.h>
#include <freetype/internal/services/svpostnm.h>
#include <freetype/internal/services/svttcmap.h>
#include <freetype/internal/services/svcfftl.h>
#include "cffdrivr.h"
#include "cffgload.h"
#include "cffload.h"
#include "cffcmap.h"
#include "cffparse.h"
#include "cffobjs.h"
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
#include <freetype/internal/services/svmm.h>
#include <freetype/internal/services/svmetric.h>
#endif
#include "cfferrs.h"
#include <freetype/internal/services/svfntfmt.h>
#include <freetype/internal/services/svgldict.h>
#include <freetype/internal/services/svprop.h>
#include <freetype/ftdriver.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 cffdriver
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** ****/
/**** F A C E S ****/
/**** ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**************************************************************************
*
* @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 FT_Err_Ok;
}
/**************************************************************************
*
* @Function:
* cff_glyph_load
*
* @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 )
cff_glyph_load( 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 FT_THROW( Invalid_Slot_Handle );
FT_TRACE1(( "cff_glyph_load: glyph index %d\n", glyph_index ));
/* 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 FT_THROW( 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 = FT_Err_Ok;
FT_GlyphSlot slot = face->glyph;
if ( FT_IS_SFNT( face ) )
{
/* OpenType 1.7 mandates that the data from `hmtx' table be used; */
/* it is no longer necessary that those values are identical to */
/* the values in the `CFF' table */
TT_Face ttface = (TT_Face)face;
FT_Short dummy;
if ( flags & FT_LOAD_VERTICAL_LAYOUT )
{
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
/* no fast retrieval for blended MM fonts without VVAR table */
if ( ( FT_IS_NAMED_INSTANCE( face ) || FT_IS_VARIATION( face ) ) &&
!( ttface->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) )
return FT_THROW( Unimplemented_Feature );
#endif
/* check whether we have data from the `vmtx' table at all; */
/* otherwise we extract the info from the CFF glyphstrings */
/* (instead of synthesizing a global value using the `OS/2' */
/* table) */
if ( !ttface->vertical_info )
goto Missing_Table;
for ( nn = 0; nn < count; nn++ )
{
FT_UShort ah;
( (SFNT_Service)ttface->sfnt )->get_metrics( ttface,
1,
start + nn,
&dummy,
&ah );
FT_TRACE5(( " idx %d: advance height %d font unit%s\n",
start + nn,
ah,
ah == 1 ? "" : "s" ));
advances[nn] = ah;
}
}
else
{
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
/* no fast retrieval for blended MM fonts without HVAR table */
if ( ( FT_IS_NAMED_INSTANCE( face ) || FT_IS_VARIATION( face ) ) &&
!( ttface->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) )
return FT_THROW( Unimplemented_Feature );
#endif
/* check whether we have data from the `hmtx' table at all */
if ( !ttface->horizontal.number_Of_HMetrics )
goto Missing_Table;
for ( nn = 0; nn < count; nn++ )
{
FT_UShort aw;
( (SFNT_Service)ttface->sfnt )->get_metrics( ttface,
0,
start + nn,
&dummy,
&aw );
FT_TRACE5(( " idx %d: advance width %d font unit%s\n",
start + nn,
aw,
aw == 1 ? "" : "s" ));
advances[nn] = aw;
}
}
return error;
}
Missing_Table:
flags |= (FT_UInt32)FT_LOAD_ADVANCE_ONLY;
for ( nn = 0; nn < count; nn++ )
{
error = cff_glyph_load( 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_String* gname;
FT_UShort sid;
FT_Error error;
/* CFF2 table does not have glyph names; */
/* we need to use `post' table method */
if ( font->version_major == 2 )
{
FT_Library library = FT_FACE_LIBRARY( face );
FT_Module sfnt_module = FT_Get_Module( library, "sfnt" );
FT_Service_GlyphDict service =
(FT_Service_GlyphDict)ft_module_get_service(
sfnt_module,
FT_SERVICE_ID_GLYPH_DICT,
0 );
if ( service && service->get_name )
return service->get_name( FT_FACE( face ),
glyph_index,
buffer,
buffer_max );
else
{
FT_ERROR(( "cff_get_glyph_name:"
" cannot get glyph name from a CFF2 font\n"
" "
" without the `psnames' module\n" ));
error = FT_THROW( Missing_Module );
goto Exit;
}
}
if ( !font->psnames )
{
FT_ERROR(( "cff_get_glyph_name:"
" cannot get glyph name from CFF & CEF fonts\n"
" "
" without the `psnames' module\n" ));
error = FT_THROW( Missing_Module );
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, sid );
if ( gname )
FT_STRCPYN( buffer, gname, buffer_max );
error = FT_Err_Ok;
Exit:
return error;
}
static FT_UInt
cff_get_name_index( CFF_Face face,
const FT_String* glyph_name )
{
CFF_Font cff;
CFF_Charset charset;
FT_Service_PsCMaps psnames;
FT_String* name;
FT_UShort sid;
FT_UInt i;
cff = (CFF_FontRec *)face->extra.data;
charset = &cff->charset;
/* CFF2 table does not have glyph names; */
/* we need to use `post' table method */
if ( cff->version_major == 2 )
{
FT_Library library = FT_FACE_LIBRARY( face );
FT_Module sfnt_module = FT_Get_Module( library, "sfnt" );
FT_Service_GlyphDict service =
(FT_Service_GlyphDict)ft_module_get_service(
sfnt_module,
FT_SERVICE_ID_GLYPH_DICT,
0 );
if ( service && service->name_index )
return service->name_index( FT_FACE( face ), glyph_name );
else
{
FT_ERROR(( "cff_get_name_index:"
" cannot get glyph index from a CFF2 font\n"
" "
" without the `psnames' module\n" ));
return 0;
}
}
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_string( cff, sid - 391 );
else
name = (FT_String *)psnames->adobe_std_strings( sid );
if ( !name )
continue;
if ( !ft_strcmp( glyph_name, name ) )
return i;
}
return 0;
}
FT_DEFINE_SERVICE_GLYPHDICTREC(
cff_service_glyph_dict,
(FT_GlyphDict_GetNameFunc) cff_get_glyph_name, /* get_name */
(FT_GlyphDict_NameIndexFunc)cff_get_name_index /* 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 )
{
CFF_FontRecDict dict = &cff->top_font.font_dict;
PS_FontInfoRec *font_info = NULL;
FT_Memory memory = face->root.memory;
if ( FT_ALLOC( font_info, sizeof ( *font_info ) ) )
goto Fail;
font_info->version = cff_index_get_sid_string( cff,
dict->version );
font_info->notice = cff_index_get_sid_string( cff,
dict->notice );
font_info->full_name = cff_index_get_sid_string( cff,
dict->full_name );
font_info->family_name = cff_index_get_sid_string( cff,
dict->family_name );
font_info->weight = cff_index_get_sid_string( cff,
dict->weight );
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_UShort)dict->underline_thickness;
cff->font_info = font_info;
}
if ( cff )
*afont_info = *cff->font_info;
Fail:
return error;
}
static FT_Error
cff_ps_get_font_extra( CFF_Face face,
PS_FontExtraRec* afont_extra )
{
CFF_Font cff = (CFF_Font)face->extra.data;
FT_Error error = FT_Err_Ok;
if ( cff && cff->font_extra == NULL )
{
CFF_FontRecDict dict = &cff->top_font.font_dict;
PS_FontExtraRec* font_extra = NULL;
FT_Memory memory = face->root.memory;
FT_String* embedded_postscript;
if ( FT_ALLOC( font_extra, sizeof ( *font_extra ) ) )
goto Fail;
font_extra->fs_type = 0U;
embedded_postscript = cff_index_get_sid_string(
cff,
dict->embedded_postscript );
if ( embedded_postscript )
{
FT_String* start_fstype;
FT_String* start_def;
/* Identify the XYZ integer in `/FSType XYZ def' substring. */
if ( ( start_fstype = ft_strstr( embedded_postscript,
"/FSType" ) ) != NULL &&
( start_def = ft_strstr( start_fstype +
sizeof ( "/FSType" ) - 1,
"def" ) ) != NULL )
{
FT_String* s;
for ( s = start_fstype + sizeof ( "/FSType" ) - 1;
s != start_def;
s++ )
{
if ( *s >= '0' && *s <= '9' )
{
if ( font_extra->fs_type >= ( FT_USHORT_MAX - 9 ) / 10 )
{
/* Overflow - ignore the FSType value. */
font_extra->fs_type = 0U;
break;
}
font_extra->fs_type *= 10;
font_extra->fs_type += (FT_UShort)( *s - '0' );
}
else if ( *s != ' ' && *s != '\n' && *s != '\r' )
{
/* Non-whitespace character between `/FSType' and next `def' */
/* - ignore the FSType value. */
font_extra->fs_type = 0U;
break;
}
}
}
}
cff->font_extra = font_extra;
}
if ( cff )
*afont_extra = *cff->font_extra;
Fail:
return error;
}
FT_DEFINE_SERVICE_PSINFOREC(
cff_service_ps_info,
(PS_GetFontInfoFunc) cff_ps_get_font_info, /* ps_get_font_info */
(PS_GetFontExtraFunc) cff_ps_get_font_extra, /* ps_get_font_extra */
(PS_HasGlyphNamesFunc) cff_ps_has_glyph_names, /* ps_has_glyph_names */
/* unsupported with CFF fonts */
(PS_GetFontPrivateFunc)NULL, /* ps_get_font_private */
/* not implemented */
(PS_GetFontValueFunc) NULL /* ps_get_font_value */
)
/*
* POSTSCRIPT NAME SERVICE
*
*/
static const char*
cff_get_ps_name( CFF_Face face )
{
CFF_Font cff = (CFF_Font)face->extra.data;
SFNT_Service sfnt = (SFNT_Service)face->sfnt;
/* following the OpenType specification 1.7, we return the name stored */
/* in the `name' table for a CFF wrapped into an SFNT container */
if ( FT_IS_SFNT( FT_FACE( face ) ) && sfnt )
{
FT_Library library = FT_FACE_LIBRARY( face );
FT_Module sfnt_module = FT_Get_Module( library, "sfnt" );
FT_Service_PsFontName service =
(FT_Service_PsFontName)ft_module_get_service(
sfnt_module,
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME,
0 );
if ( service && service->get_ps_font_name )
return service->get_ps_font_name( FT_FACE( face ) );
}
return (const char*)cff->font_name;
}
FT_DEFINE_SERVICE_PSFONTNAMEREC(
cff_service_ps_name,
(FT_PsName_GetFunc)cff_get_ps_name /* get_ps_font_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 = FT_Err_Ok;
FT_Face face = FT_CMAP_FACE( cmap );
FT_Library library = FT_FACE_LIBRARY( face );
if ( cmap->clazz != &cff_cmap_encoding_class_rec &&
cmap->clazz != &cff_cmap_unicode_class_rec )
{
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,
0 );
if ( service && service->get_cmap_info )
error = service->get_cmap_info( charmap, cmap_info );
}
else
error = FT_THROW( Invalid_CharMap_Format );
return error;
}
FT_DEFINE_SERVICE_TTCMAPSREC(
cff_service_get_cmap_info,
(TT_CMap_Info_GetFunc)cff_get_cmap_info /* 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 = FT_Err_Ok;
CFF_Font cff = (CFF_Font)face->extra.data;
if ( cff )
{
CFF_FontRecDict dict = &cff->top_font.font_dict;
if ( dict->cid_registry == 0xFFFFU )
{
error = FT_THROW( Invalid_Argument );
goto Fail;
}
if ( registry )
{
if ( !cff->registry )
cff->registry = cff_index_get_sid_string( cff,
dict->cid_registry );
*registry = cff->registry;
}
if ( ordering )
{
if ( !cff->ordering )
cff->ordering = cff_index_get_sid_string( cff,
dict->cid_ordering );
*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 = FT_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 = FT_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 = FT_THROW( Invalid_Argument );
goto Fail;
}
if ( glyph_index >= cff->num_glyphs )
{
error = FT_THROW( 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, /* get_ros */
(FT_CID_GetIsInternallyCIDKeyedFunc)
cff_get_is_cid, /* get_is_cid */
(FT_CID_GetCIDFromGlyphIndexFunc)
cff_get_cid_from_glyph_index /* get_cid_from_glyph_index */
)
/*
* PROPERTY SERVICE
*
*/
FT_DEFINE_SERVICE_PROPERTIESREC(
cff_service_properties,
(FT_Properties_SetFunc)ps_property_set, /* set_property */
(FT_Properties_GetFunc)ps_property_get ) /* get_property */
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
/*
* MULTIPLE MASTER SERVICE
*
*/
static FT_Error
cff_set_mm_blend( CFF_Face face,
FT_UInt num_coords,
FT_Fixed* coords )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->set_mm_blend( FT_FACE( face ), num_coords, coords );
}
static FT_Error
cff_get_mm_blend( CFF_Face face,
FT_UInt num_coords,
FT_Fixed* coords )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->get_mm_blend( FT_FACE( face ), num_coords, coords );
}
static FT_Error
cff_set_mm_weightvector( CFF_Face face,
FT_UInt len,
FT_Fixed* weightvector )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->set_mm_weightvector( FT_FACE( face ), len, weightvector );
}
static FT_Error
cff_get_mm_weightvector( CFF_Face face,
FT_UInt* len,
FT_Fixed* weightvector )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->get_mm_weightvector( FT_FACE( face ), len, weightvector );
}
static FT_Error
cff_get_mm_var( CFF_Face face,
FT_MM_Var* *master )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->get_mm_var( FT_FACE( face ), master );
}
static FT_Error
cff_set_var_design( CFF_Face face,
FT_UInt num_coords,
FT_Fixed* coords )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->set_var_design( FT_FACE( face ), num_coords, coords );
}
static FT_Error
cff_get_var_design( CFF_Face face,
FT_UInt num_coords,
FT_Fixed* coords )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->get_var_design( FT_FACE( face ), num_coords, coords );
}
static FT_Error
cff_set_instance( CFF_Face face,
FT_UInt instance_index )
{
FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
return mm->set_instance( FT_FACE( face ), instance_index );
}
FT_DEFINE_SERVICE_MULTIMASTERSREC(
cff_service_multi_masters,
(FT_Get_MM_Func) NULL, /* get_mm */
(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
(FT_Set_MM_Blend_Func) cff_set_mm_blend, /* set_mm_blend */
(FT_Get_MM_Blend_Func) cff_get_mm_blend, /* get_mm_blend */
(FT_Get_MM_Var_Func) cff_get_mm_var, /* get_mm_var */
(FT_Set_Var_Design_Func) cff_set_var_design, /* set_var_design */
(FT_Get_Var_Design_Func) cff_get_var_design, /* get_var_design */
(FT_Set_Instance_Func) cff_set_instance, /* set_instance */
(FT_Set_MM_WeightVector_Func)cff_set_mm_weightvector, /* set_mm_weightvector */
(FT_Get_MM_WeightVector_Func)cff_get_mm_weightvector, /* get_mm_weightvector */
(FT_Get_Var_Blend_Func) cff_get_var_blend, /* get_var_blend */
(FT_Done_Blend_Func) cff_done_blend /* done_blend */
)
/*
* METRICS VARIATIONS SERVICE
*
*/
static FT_Error
cff_hadvance_adjust( CFF_Face face,
FT_UInt gindex,
FT_Int *avalue )
{
FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)face->var;
return var->hadvance_adjust( FT_FACE( face ), gindex, avalue );
}
static void
cff_metrics_adjust( CFF_Face face )
{
FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)face->var;
var->metrics_adjust( FT_FACE( face ) );
}
FT_DEFINE_SERVICE_METRICSVARIATIONSREC(
cff_service_metrics_variations,
(FT_HAdvance_Adjust_Func)cff_hadvance_adjust, /* hadvance_adjust */
(FT_LSB_Adjust_Func) NULL, /* lsb_adjust */
(FT_RSB_Adjust_Func) NULL, /* rsb_adjust */
(FT_VAdvance_Adjust_Func)NULL, /* vadvance_adjust */
(FT_TSB_Adjust_Func) NULL, /* tsb_adjust */
(FT_BSB_Adjust_Func) NULL, /* bsb_adjust */
(FT_VOrg_Adjust_Func) NULL, /* vorg_adjust */
(FT_Metrics_Adjust_Func) cff_metrics_adjust /* metrics_adjust */
)
#endif
/*
* CFFLOAD SERVICE
*
*/
FT_DEFINE_SERVICE_CFFLOADREC(
cff_service_cff_load,
(FT_Get_Standard_Encoding_Func)cff_get_standard_encoding,
(FT_Load_Private_Dict_Func) cff_load_private_dict,
(FT_FD_Select_Get_Func) cff_fd_select_get,
(FT_Blend_Check_Vector_Func) cff_blend_check_vector,
(FT_Blend_Build_Vector_Func) cff_blend_build_vector
)
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** ****/
/**** D R I V E R I N T E R F A C E ****/
/**** ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
#if !defined FT_CONFIG_OPTION_NO_GLYPH_NAMES && \
defined TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_DEFINE_SERVICEDESCREC10(
cff_services,
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF,
FT_SERVICE_ID_MULTI_MASTERS, &cff_service_multi_masters,
FT_SERVICE_ID_METRICS_VARIATIONS, &cff_service_metrics_variations,
FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info,
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name,
FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict,
FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info,
FT_SERVICE_ID_CID, &cff_service_cid_info,
FT_SERVICE_ID_PROPERTIES, &cff_service_properties,
FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load
)
#elif !defined FT_CONFIG_OPTION_NO_GLYPH_NAMES
FT_DEFINE_SERVICEDESCREC8(
cff_services,
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF,
FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info,
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name,
FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict,
FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info,
FT_SERVICE_ID_CID, &cff_service_cid_info,
FT_SERVICE_ID_PROPERTIES, &cff_service_properties,
FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load
)
#elif defined TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_DEFINE_SERVICEDESCREC9(
cff_services,
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF,
FT_SERVICE_ID_MULTI_MASTERS, &cff_service_multi_masters,
FT_SERVICE_ID_METRICS_VARIATIONS, &cff_service_metrics_var,
FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info,
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name,
FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info,
FT_SERVICE_ID_CID, &cff_service_cid_info,
FT_SERVICE_ID_PROPERTIES, &cff_service_properties,
FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load
)
#else
FT_DEFINE_SERVICEDESCREC7(
cff_services,
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF,
FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info,
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name,
FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info,
FT_SERVICE_ID_CID, &cff_service_cid_info,
FT_SERVICE_ID_PROPERTIES, &cff_service_properties,
FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load
)
#endif
FT_CALLBACK_DEF( FT_Module_Interface )
cff_get_interface( FT_Module driver, /* CFF_Driver */
const char* module_interface )
{
FT_Library library;
FT_Module sfnt;
FT_Module_Interface result;
result = ft_service_list_lookup( cff_services, module_interface );
if ( result )
return result;
/* `driver' is not yet evaluated */
if ( !driver )
return NULL;
library = driver->library;
if ( !library )
return NULL;
/* we pass our request to the `sfnt' module */
sfnt = FT_Get_Module( 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 |
FT_MODULE_DRIVER_HINTS_LIGHTLY,
sizeof ( PS_DriverRec ),
"cff",
0x10000L,
0x20000L,
NULL, /* module-specific interface */
cff_driver_init, /* FT_Module_Constructor module_init */
cff_driver_done, /* FT_Module_Destructor module_done */
cff_get_interface, /* FT_Module_Requester get_interface */
sizeof ( TT_FaceRec ),
sizeof ( CFF_SizeRec ),
sizeof ( CFF_GlyphSlotRec ),
cff_face_init, /* FT_Face_InitFunc init_face */
cff_face_done, /* FT_Face_DoneFunc done_face */
cff_size_init, /* FT_Size_InitFunc init_size */
cff_size_done, /* FT_Size_DoneFunc done_size */
cff_slot_init, /* FT_Slot_InitFunc init_slot */
cff_slot_done, /* FT_Slot_DoneFunc done_slot */
cff_glyph_load, /* FT_Slot_LoadFunc load_glyph */
cff_get_kerning, /* FT_Face_GetKerningFunc get_kerning */
NULL, /* FT_Face_AttachFunc attach_file */
cff_get_advances, /* FT_Face_GetAdvancesFunc get_advances */
cff_size_request, /* FT_Size_RequestFunc request_size */
CFF_SIZE_SELECT /* FT_Size_SelectFunc select_size */
)
/* END */