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[sfnt, truetype] Add framework for Metrics Variations service. 

No effect yet; service functions will be implemented later on.

Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

* include/freetype/internal/services/svmetric.h: New file.

* include/freetype/internal/ftserv.h
(FT_SERVICE_METRICS_VARIATIONS_H): New macro.

* include/freetype/internal/tttypes.h (TT_Face): New field `var'.

* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(sfnt_init_face): Initialize `face->var'.

* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_service_metrics_variations): New service.
(tt_services): Updated.

* src/truetype/ttpic.h: Updated.
This commit is contained in:
Werner Lemberg 2016-12-14 20:44:11 +01:00
parent c628a7dfba
commit 0918325e3f
7 changed files with 226 additions and 15 deletions
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24
ChangeLog
View File

@ -1,3 +1,27 @@
2016-12-14 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Add framework for Metrics Variations service.
No effect yet; service functions will be implemented later on.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/services/svmetric.h: New file.
* include/freetype/internal/ftserv.h
(FT_SERVICE_METRICS_VARIATIONS_H): New macro.
* include/freetype/internal/tttypes.h (TT_Face): New field `var'.
* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(sfnt_init_face): Initialize `face->var'.
* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_service_metrics_variations): New service.
(tt_services): Updated.
* src/truetype/ttpic.h: Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[cff] Add Multiple Masters service.

1
include/freetype/internal/ftserv.h
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@ -818,6 +818,7 @@ FT_BEGIN_HEADER
#define FT_SERVICE_GLYPH_DICT_H <freetype/internal/services/svgldict.h>
#define FT_SERVICE_GX_VALIDATE_H <freetype/internal/services/svgxval.h>
#define FT_SERVICE_KERNING_H <freetype/internal/services/svkern.h>
#define FT_SERVICE_METRICS_VARIATIONS_H <freetype/internal/services/svmetric.h>
#define FT_SERVICE_MULTIPLE_MASTERS_H <freetype/internal/services/svmm.h>
#define FT_SERVICE_OPENTYPE_VALIDATE_H <freetype/internal/services/svotval.h>
#define FT_SERVICE_PFR_H <freetype/internal/services/svpfr.h>

155
include/freetype/internal/services/svmetric.h Normal file
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@ -0,0 +1,155 @@
/***************************************************************************/
/* */
/* svmetric.h */
/* */
/* The FreeType services for metrics variations (specification). */
/* */
/* Copyright 2016 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. */
/* */
/***************************************************************************/
#ifndef SVMETRIC_H_
#define SVMETRIC_H_
#include FT_INTERNAL_SERVICE_H
FT_BEGIN_HEADER
/*
* A service to manage the `HVAR, `MVAR', and `VVAR' OpenType tables.
*
*/
#define FT_SERVICE_ID_METRICS_VARIATIONS "metrics-variations"
/* HVAR */
typedef FT_Error
(*FT_HAdvance_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
typedef FT_Error
(*FT_LSB_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
typedef FT_Error
(*FT_RSB_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
/* VVAR */
typedef FT_Error
(*FT_VAdvance_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
typedef FT_Error
(*FT_TSB_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
typedef FT_Error
(*FT_BSB_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
typedef FT_Error
(*FT_VOrg_Adjust_Func)( FT_Face face,
FT_UInt gindex,
FT_Int *avalue );
/* MVAR */
typedef FT_Error
(*FT_Metrics_Adjust_Func)( FT_Face face,
FT_ULong tag,
FT_Int *avalue );
FT_DEFINE_SERVICE( MetricsVariations )
{
FT_HAdvance_Adjust_Func hadvance_adjust;
FT_LSB_Adjust_Func lsb_adjust;
FT_RSB_Adjust_Func rsb_adjust;
FT_VAdvance_Adjust_Func vadvance_adjust;
FT_TSB_Adjust_Func tsb_adjust;
FT_BSB_Adjust_Func bsb_adjust;
FT_VOrg_Adjust_Func vorg_adjust;
FT_Metrics_Adjust_Func metrics_adjust;
};
#ifndef FT_CONFIG_OPTION_PIC
#define FT_DEFINE_SERVICE_METRICSVARIATIONSREC( class_, \
hadvance_adjust_, \
lsb_adjust_, \
rsb_adjust_, \
vadvance_adjust_, \
tsb_adjust_, \
bsb_adjust_, \
vorg_adjust_, \
metrics_adjust_ ) \
static const FT_Service_MetricsVariationsRec class_ = \
{ \
hadvance_adjust_, \
lsb_adjust_, \
rsb_adjust_, \
vadvance_adjust_, \
tsb_adjust_, \
bsb_adjust_, \
vorg_adjust_, \
metrics_adjust_ \
};
#else /* FT_CONFIG_OPTION_PIC */
#define FT_DEFINE_SERVICE_METRICSVARIATIONSREC( class_, \
hadvance_adjust_, \
lsb_adjust_, \
rsb_adjust_, \
vadvance_adjust_, \
tsb_adjust_, \
bsb_adjust_, \
vorg_adjust_, \
metrics_adjust_ ) \
void \
FT_Init_Class_ ## class_( FT_Service_MetricsVariationsRec* clazz ) \
{ \
clazz->hadvance_adjust = hadvance_adjust_; \
clazz->lsb_adjust = lsb_adjust_; \
clazz->rsb_adjust = rsb_adjust_; \
clazz->vadvance_adjust = vadvance_adjust_; \
clazz->tsb_adjust = tsb_adjust_; \
clazz->bsb_adjust = bsb_adjust_; \
clazz->vorg_adjust = vorg_adjust_; \
clazz->metrics_adjust = metrics_adjust_; \
};
#endif /* FT_CONFIG_OPTION_PIC */
/* */
FT_END_HEADER
#endif /* SVMETRIC_H_ */
/* END */

4
include/freetype/internal/tttypes.h
View File

@ -1355,6 +1355,10 @@ FT_BEGIN_HEADER
/* a typeless pointer to the FT_Service_MultiMasters table used to */
/* handle variation fonts */
void* mm;
/* a typeless pointer to the FT_Service_MetricsVariationsRec table */
/* used to handle the HVAR, VVAR, and MVAR OpenType tables */
void* var;
#endif

3
src/sfnt/sfobjs.c
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@ -31,6 +31,7 @@
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
#include FT_SERVICE_MULTIPLE_MASTERS_H
#include FT_SERVICE_METRICS_VARIATIONS_H
#endif
#include "sferrors.h"
@ -888,6 +889,8 @@
FT_SERVICE_ID_MULTI_MASTERS,
0 );
}
FT_FACE_FIND_GLOBAL_SERVICE( face, face->var, METRICS_VARIATIONS );
#endif
FT_TRACE2(( "SFNT driver\n" ));

33
src/truetype/ttdriver.c
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@ -25,6 +25,7 @@
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
#include FT_MULTIPLE_MASTERS_H
#include FT_SERVICE_MULTIPLE_MASTERS_H
#include FT_SERVICE_METRICS_VARIATIONS_H
#endif
#include FT_SERVICE_TRUETYPE_ENGINE_H
@ -464,6 +465,7 @@
/*************************************************************************/
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_DEFINE_SERVICE_MULTIMASTERSREC(
tt_service_gx_multi_masters,
@ -478,7 +480,23 @@
(FT_Get_Var_Blend_Func) tt_get_var_blend, /* get_var_blend */
(FT_Done_Blend_Func) tt_done_blend /* done_blend */
)
#endif
FT_DEFINE_SERVICE_METRICSVARIATIONSREC(
tt_service_metrics_variations,
(FT_HAdvance_Adjust_Func)NULL, /* 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) NULL /* metrics_adjust */
)
#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
static const FT_Service_TrueTypeEngineRec tt_service_truetype_engine =
@ -503,14 +521,15 @@
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_DEFINE_SERVICEDESCREC5(
FT_DEFINE_SERVICEDESCREC6(
tt_services,
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TRUETYPE,
FT_SERVICE_ID_MULTI_MASTERS, &TT_SERVICE_GX_MULTI_MASTERS_GET,
FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET,
FT_SERVICE_ID_PROPERTIES, &TT_SERVICE_PROPERTIES_GET )
FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TRUETYPE,
FT_SERVICE_ID_MULTI_MASTERS, &TT_SERVICE_GX_MULTI_MASTERS_GET,
FT_SERVICE_ID_METRICS_VARIATIONS, &TT_SERVICE_METRICS_VARIATIONS_GET,
FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET,
FT_SERVICE_ID_PROPERTIES, &TT_SERVICE_PROPERTIES_GET )
#else
FT_DEFINE_SERVICEDESCREC4(
tt_services,

21
src/truetype/ttpic.h
View File

@ -25,15 +25,17 @@
#ifndef FT_CONFIG_OPTION_PIC
#define TT_SERVICES_GET tt_services
#define TT_SERVICE_GX_MULTI_MASTERS_GET tt_service_gx_multi_masters
#define TT_SERVICE_TRUETYPE_GLYF_GET tt_service_truetype_glyf
#define TT_SERVICE_PROPERTIES_GET tt_service_properties
#define TT_SERVICES_GET tt_services
#define TT_SERVICE_GX_MULTI_MASTERS_GET tt_service_gx_multi_masters
#define TT_SERVICE_METRICS_VARIATIONS_GET tt_service_metrics_variations
#define TT_SERVICE_TRUETYPE_GLYF_GET tt_service_truetype_glyf
#define TT_SERVICE_PROPERTIES_GET tt_service_properties
#else /* FT_CONFIG_OPTION_PIC */
#include FT_MULTIPLE_MASTERS_H
#include FT_SERVICE_MULTIPLE_MASTERS_H
#include FT_SERVICE_METRICS_VARIATIONS_H
#include FT_SERVICE_TRUETYPE_GLYF_H
#include FT_SERVICE_PROPERTIES_H
@ -42,12 +44,13 @@ FT_BEGIN_HEADER
typedef struct TTModulePIC_
{
FT_ServiceDescRec* tt_services;
FT_ServiceDescRec* tt_services;
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_Service_MultiMastersRec tt_service_gx_multi_masters;
FT_Service_MultiMastersRec tt_service_gx_multi_masters;
FT_Service_MetricsVariationsRec tt_service_metrics_variations;
#endif
FT_Service_TTGlyfRec tt_service_truetype_glyf;
FT_Service_PropertiesRec tt_service_properties;
FT_Service_TTGlyfRec tt_service_truetype_glyf;
FT_Service_PropertiesRec tt_service_properties;
} TTModulePIC;
@ -56,6 +59,8 @@ FT_BEGIN_HEADER
( (TTModulePIC*)((lib)->pic_container.truetype) )
#define TT_SERVICES_GET \
( GET_PIC( library )->tt_services )
#define TT_SERVICE_METRICS_VARIATIONS_GET \
( GET_PIC( library )->tt_service_metrics_variations )
#define TT_SERVICE_GX_MULTI_MASTERS_GET \
( GET_PIC( library )->tt_service_gx_multi_masters )
#define TT_SERVICE_TRUETYPE_GLYF_GET \