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54876
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/****************************************************************************
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*
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* ftmm.c
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*
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* Multiple Master font support (body).
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*
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* Copyright (C) 1996-2019 by
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* David Turner, Robert Wilhelm, and Werner Lemberg.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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49234
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#include <ft2build.h>
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#include FT_INTERNAL_DEBUG_H
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#include FT_MULTIPLE_MASTERS_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_SERVICE_MULTIPLE_MASTERS_H
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#include FT_SERVICE_METRICS_VARIATIONS_H
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54876
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/**************************************************************************
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*
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* The macro FT_COMPONENT is used in trace mode. It is an implicit
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* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
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* messages during execution.
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*/
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49234
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#undef FT_COMPONENT
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54876
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#define FT_COMPONENT mm
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49234
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static FT_Error
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ft_face_get_mm_service( FT_Face face,
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FT_Service_MultiMasters *aservice )
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{
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FT_Error error;
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*aservice = NULL;
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if ( !face )
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return FT_THROW( Invalid_Face_Handle );
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error = FT_ERR( Invalid_Argument );
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if ( FT_HAS_MULTIPLE_MASTERS( face ) )
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{
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FT_FACE_LOOKUP_SERVICE( face,
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*aservice,
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MULTI_MASTERS );
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if ( *aservice )
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error = FT_Err_Ok;
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}
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return error;
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}
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static FT_Error
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ft_face_get_mvar_service( FT_Face face,
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FT_Service_MetricsVariations *aservice )
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{
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FT_Error error;
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*aservice = NULL;
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if ( !face )
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return FT_THROW( Invalid_Face_Handle );
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error = FT_ERR( Invalid_Argument );
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if ( FT_HAS_MULTIPLE_MASTERS( face ) )
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{
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FT_FACE_LOOKUP_SERVICE( face,
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*aservice,
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METRICS_VARIATIONS );
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if ( *aservice )
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error = FT_Err_Ok;
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}
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return error;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_Multi_Master( FT_Face face,
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FT_Multi_Master *amaster )
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{
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FT_Error error;
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FT_Service_MultiMasters service;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( !amaster )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service->get_mm )
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error = service->get_mm( face, amaster );
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}
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return error;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_MM_Var( FT_Face face,
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FT_MM_Var* *amaster )
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{
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FT_Error error;
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FT_Service_MultiMasters service;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( !amaster )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service->get_mm_var )
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error = service->get_mm_var( face, amaster );
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}
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return error;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Done_MM_Var( FT_Library library,
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FT_MM_Var* amaster )
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{
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FT_Memory memory;
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if ( !library )
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return FT_THROW( Invalid_Library_Handle );
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memory = library->memory;
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FT_FREE( amaster );
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return FT_Err_Ok;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Set_MM_Design_Coordinates( FT_Face face,
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FT_UInt num_coords,
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FT_Long* coords )
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{
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FT_Error error;
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FT_Service_MultiMasters service;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( num_coords && !coords )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service->set_mm_design )
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error = service->set_mm_design( face, num_coords, coords );
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}
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/* enforce recomputation of auto-hinting data */
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if ( !error && face->autohint.finalizer )
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{
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face->autohint.finalizer( face->autohint.data );
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face->autohint.data = NULL;
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}
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return error;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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54876
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FT_Set_MM_WeightVector( FT_Face face,
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FT_UInt len,
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FT_Fixed* weightvector )
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{
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FT_Error error;
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FT_Service_MultiMasters service;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( len && !weightvector )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service->set_mm_weightvector )
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error = service->set_mm_weightvector( face, len, weightvector );
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}
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/* enforce recomputation of auto-hinting data */
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if ( !error && face->autohint.finalizer )
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{
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face->autohint.finalizer( face->autohint.data );
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face->autohint.data = NULL;
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}
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return error;
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}
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FT_EXPORT_DEF( FT_Error )
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FT_Get_MM_WeightVector( FT_Face face,
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FT_UInt* len,
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FT_Fixed* weightvector )
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{
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FT_Error error;
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FT_Service_MultiMasters service;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( len && !weightvector )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service->get_mm_weightvector )
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error = service->get_mm_weightvector( face, len, weightvector );
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}
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return error;
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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49234
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FT_Set_Var_Design_Coordinates( FT_Face face,
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FT_UInt num_coords,
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FT_Fixed* coords )
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{
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FT_Error error;
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FT_Service_MultiMasters service_mm = NULL;
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FT_Service_MetricsVariations service_mvar = NULL;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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if ( num_coords && !coords )
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return FT_THROW( Invalid_Argument );
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error = ft_face_get_mm_service( face, &service_mm );
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if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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if ( service_mm->set_var_design )
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error = service_mm->set_var_design( face, num_coords, coords );
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/* internal error code -1 means `no change'; we can exit immediately */
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if ( error == -1 )
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return FT_Err_Ok;
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}
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if ( !error )
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{
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(void)ft_face_get_mvar_service( face, &service_mvar );
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if ( service_mvar && service_mvar->metrics_adjust )
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service_mvar->metrics_adjust( face );
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}
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/* enforce recomputation of auto-hinting data */
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if ( !error && face->autohint.finalizer )
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{
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face->autohint.finalizer( face->autohint.data );
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face->autohint.data = NULL;
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}
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return error;
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}
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310 |
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/* documentation is in ftmm.h */
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312 |
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FT_EXPORT_DEF( FT_Error )
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FT_Get_Var_Design_Coordinates( FT_Face face,
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FT_UInt num_coords,
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FT_Fixed* coords )
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{
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318 |
FT_Error error;
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FT_Service_MultiMasters service;
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320 |
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/* check of `face' delayed to `ft_face_get_mm_service' */
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323 |
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if ( !coords )
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return FT_THROW( Invalid_Argument );
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326 |
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327 |
error = ft_face_get_mm_service( face, &service );
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328 |
if ( !error )
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{
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error = FT_ERR( Invalid_Argument );
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331 |
if ( service->get_var_design )
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error = service->get_var_design( face, num_coords, coords );
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}
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334 |
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return error;
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336 |
}
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337 |
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338 |
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339 |
/* documentation is in ftmm.h */
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340 |
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341 |
FT_EXPORT_DEF( FT_Error )
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342 |
FT_Set_MM_Blend_Coordinates( FT_Face face,
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343 |
FT_UInt num_coords,
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344 |
FT_Fixed* coords )
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345 |
{
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346 |
FT_Error error;
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347 |
FT_Service_MultiMasters service_mm = NULL;
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348 |
FT_Service_MetricsVariations service_mvar = NULL;
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349 |
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350 |
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351 |
/* check of `face' delayed to `ft_face_get_mm_service' */
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352 |
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353 |
if ( num_coords && !coords )
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return FT_THROW( Invalid_Argument );
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355 |
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356 |
error = ft_face_get_mm_service( face, &service_mm );
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357 |
if ( !error )
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358 |
{
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359 |
error = FT_ERR( Invalid_Argument );
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360 |
if ( service_mm->set_mm_blend )
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361 |
error = service_mm->set_mm_blend( face, num_coords, coords );
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362 |
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363 |
/* internal error code -1 means `no change'; we can exit immediately */
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364 |
if ( error == -1 )
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365 |
return FT_Err_Ok;
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366 |
}
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367 |
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368 |
if ( !error )
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369 |
{
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370 |
(void)ft_face_get_mvar_service( face, &service_mvar );
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371 |
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372 |
if ( service_mvar && service_mvar->metrics_adjust )
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373 |
service_mvar->metrics_adjust( face );
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374 |
}
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375 |
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376 |
/* enforce recomputation of auto-hinting data */
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377 |
if ( !error && face->autohint.finalizer )
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378 |
{
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379 |
face->autohint.finalizer( face->autohint.data );
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380 |
face->autohint.data = NULL;
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381 |
}
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382 |
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383 |
return error;
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384 |
}
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385 |
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386 |
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387 |
/* documentation is in ftmm.h */
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388 |
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389 |
/* This is exactly the same as the previous function. It exists for */
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390 |
/* orthogonality. */
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391 |
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392 |
FT_EXPORT_DEF( FT_Error )
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393 |
FT_Set_Var_Blend_Coordinates( FT_Face face,
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394 |
FT_UInt num_coords,
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395 |
FT_Fixed* coords )
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396 |
{
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|
|
397 |
FT_Error error;
|
|
|
398 |
FT_Service_MultiMasters service_mm = NULL;
|
|
|
399 |
FT_Service_MetricsVariations service_mvar = NULL;
|
|
|
400 |
|
|
|
401 |
|
|
|
402 |
/* check of `face' delayed to `ft_face_get_mm_service' */
|
|
|
403 |
|
|
|
404 |
if ( num_coords && !coords )
|
|
|
405 |
return FT_THROW( Invalid_Argument );
|
|
|
406 |
|
|
|
407 |
error = ft_face_get_mm_service( face, &service_mm );
|
|
|
408 |
if ( !error )
|
|
|
409 |
{
|
|
|
410 |
error = FT_ERR( Invalid_Argument );
|
|
|
411 |
if ( service_mm->set_mm_blend )
|
|
|
412 |
error = service_mm->set_mm_blend( face, num_coords, coords );
|
|
|
413 |
|
|
|
414 |
/* internal error code -1 means `no change'; we can exit immediately */
|
|
|
415 |
if ( error == -1 )
|
|
|
416 |
return FT_Err_Ok;
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
if ( !error )
|
|
|
420 |
{
|
|
|
421 |
(void)ft_face_get_mvar_service( face, &service_mvar );
|
|
|
422 |
|
|
|
423 |
if ( service_mvar && service_mvar->metrics_adjust )
|
|
|
424 |
service_mvar->metrics_adjust( face );
|
|
|
425 |
}
|
|
|
426 |
|
|
|
427 |
/* enforce recomputation of auto-hinting data */
|
|
|
428 |
if ( !error && face->autohint.finalizer )
|
|
|
429 |
{
|
|
|
430 |
face->autohint.finalizer( face->autohint.data );
|
|
|
431 |
face->autohint.data = NULL;
|
|
|
432 |
}
|
|
|
433 |
|
|
|
434 |
return error;
|
|
|
435 |
}
|
|
|
436 |
|
|
|
437 |
|
|
|
438 |
/* documentation is in ftmm.h */
|
|
|
439 |
|
|
|
440 |
FT_EXPORT_DEF( FT_Error )
|
|
|
441 |
FT_Get_MM_Blend_Coordinates( FT_Face face,
|
|
|
442 |
FT_UInt num_coords,
|
|
|
443 |
FT_Fixed* coords )
|
|
|
444 |
{
|
|
|
445 |
FT_Error error;
|
|
|
446 |
FT_Service_MultiMasters service;
|
|
|
447 |
|
|
|
448 |
|
|
|
449 |
/* check of `face' delayed to `ft_face_get_mm_service' */
|
|
|
450 |
|
|
|
451 |
if ( !coords )
|
|
|
452 |
return FT_THROW( Invalid_Argument );
|
|
|
453 |
|
|
|
454 |
error = ft_face_get_mm_service( face, &service );
|
|
|
455 |
if ( !error )
|
|
|
456 |
{
|
|
|
457 |
error = FT_ERR( Invalid_Argument );
|
|
|
458 |
if ( service->get_mm_blend )
|
|
|
459 |
error = service->get_mm_blend( face, num_coords, coords );
|
|
|
460 |
}
|
|
|
461 |
|
|
|
462 |
return error;
|
|
|
463 |
}
|
|
|
464 |
|
|
|
465 |
|
|
|
466 |
/* documentation is in ftmm.h */
|
|
|
467 |
|
|
|
468 |
/* This is exactly the same as the previous function. It exists for */
|
|
|
469 |
/* orthogonality. */
|
|
|
470 |
|
|
|
471 |
FT_EXPORT_DEF( FT_Error )
|
|
|
472 |
FT_Get_Var_Blend_Coordinates( FT_Face face,
|
|
|
473 |
FT_UInt num_coords,
|
|
|
474 |
FT_Fixed* coords )
|
|
|
475 |
{
|
|
|
476 |
FT_Error error;
|
|
|
477 |
FT_Service_MultiMasters service;
|
|
|
478 |
|
|
|
479 |
|
|
|
480 |
/* check of `face' delayed to `ft_face_get_mm_service' */
|
|
|
481 |
|
|
|
482 |
if ( !coords )
|
|
|
483 |
return FT_THROW( Invalid_Argument );
|
|
|
484 |
|
|
|
485 |
error = ft_face_get_mm_service( face, &service );
|
|
|
486 |
if ( !error )
|
|
|
487 |
{
|
|
|
488 |
error = FT_ERR( Invalid_Argument );
|
|
|
489 |
if ( service->get_mm_blend )
|
|
|
490 |
error = service->get_mm_blend( face, num_coords, coords );
|
|
|
491 |
}
|
|
|
492 |
|
|
|
493 |
return error;
|
|
|
494 |
}
|
|
|
495 |
|
|
|
496 |
|
|
|
497 |
/* documentation is in ftmm.h */
|
|
|
498 |
|
|
|
499 |
FT_EXPORT_DEF( FT_Error )
|
|
|
500 |
FT_Get_Var_Axis_Flags( FT_MM_Var* master,
|
|
|
501 |
FT_UInt axis_index,
|
|
|
502 |
FT_UInt* flags )
|
|
|
503 |
{
|
|
|
504 |
FT_UShort* axis_flags;
|
|
|
505 |
|
|
|
506 |
|
|
|
507 |
if ( !master || !flags )
|
|
|
508 |
return FT_THROW( Invalid_Argument );
|
|
|
509 |
|
|
|
510 |
if ( axis_index >= master->num_axis )
|
|
|
511 |
return FT_THROW( Invalid_Argument );
|
|
|
512 |
|
|
|
513 |
/* the axis flags array immediately follows the data of `master' */
|
|
|
514 |
axis_flags = (FT_UShort*)&( master[1] );
|
|
|
515 |
*flags = axis_flags[axis_index];
|
|
|
516 |
|
|
|
517 |
return FT_Err_Ok;
|
|
|
518 |
}
|
|
|
519 |
|
|
|
520 |
|
|
|
521 |
/* documentation is in ftmm.h */
|
|
|
522 |
|
|
|
523 |
FT_EXPORT_DEF( FT_Error )
|
|
|
524 |
FT_Set_Named_Instance( FT_Face face,
|
|
|
525 |
FT_UInt instance_index )
|
|
|
526 |
{
|
|
|
527 |
FT_Error error;
|
|
|
528 |
|
|
|
529 |
FT_Service_MultiMasters service_mm = NULL;
|
|
|
530 |
FT_Service_MetricsVariations service_mvar = NULL;
|
|
|
531 |
|
|
|
532 |
|
|
|
533 |
/* check of `face' delayed to `ft_face_get_mm_service' */
|
|
|
534 |
|
|
|
535 |
error = ft_face_get_mm_service( face, &service_mm );
|
|
|
536 |
if ( !error )
|
|
|
537 |
{
|
|
|
538 |
error = FT_ERR( Invalid_Argument );
|
|
|
539 |
if ( service_mm->set_instance )
|
|
|
540 |
error = service_mm->set_instance( face, instance_index );
|
|
|
541 |
}
|
|
|
542 |
|
|
|
543 |
if ( !error )
|
|
|
544 |
{
|
|
|
545 |
(void)ft_face_get_mvar_service( face, &service_mvar );
|
|
|
546 |
|
|
|
547 |
if ( service_mvar && service_mvar->metrics_adjust )
|
|
|
548 |
service_mvar->metrics_adjust( face );
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
/* enforce recomputation of auto-hinting data */
|
|
|
552 |
if ( !error && face->autohint.finalizer )
|
|
|
553 |
{
|
|
|
554 |
face->autohint.finalizer( face->autohint.data );
|
|
|
555 |
face->autohint.data = NULL;
|
|
|
556 |
}
|
|
|
557 |
|
|
|
558 |
if ( !error )
|
|
|
559 |
{
|
|
|
560 |
face->face_index = ( instance_index << 16 ) |
|
|
|
561 |
( face->face_index & 0xFFFFL );
|
|
|
562 |
face->face_flags &= ~FT_FACE_FLAG_VARIATION;
|
|
|
563 |
}
|
|
|
564 |
|
|
|
565 |
return error;
|
|
|
566 |
}
|
|
|
567 |
|
|
|
568 |
|
|
|
569 |
/* END */
|