ref: 410f3799b6a193e20b34c574e6f0f2be2428b1eb
dir: /src/base/ftpfr.c/
/***************************************************************************/
/* */
/* ftpfr.c */
/* */
/* FreeType API for accessing PFR-specific data (body). */
/* */
/* Copyright 2002-2017 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 <ft2build.h>
#include FT_INTERNAL_DEBUG_H
#include FT_INTERNAL_OBJECTS_H
#include FT_SERVICE_PFR_H
/* check the format */
static FT_Service_PfrMetrics
ft_pfr_check( FT_Face face )
{
FT_Service_PfrMetrics service = NULL;
if ( face )
FT_FACE_LOOKUP_SERVICE( face, service, PFR_METRICS );
return service;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Metrics( FT_Face face,
FT_UInt *aoutline_resolution,
FT_UInt *ametrics_resolution,
FT_Fixed *ametrics_x_scale,
FT_Fixed *ametrics_y_scale )
{
FT_Error error = FT_Err_Ok;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
service = ft_pfr_check( face );
if ( service )
{
error = service->get_metrics( face,
aoutline_resolution,
ametrics_resolution,
ametrics_x_scale,
ametrics_y_scale );
}
else
{
FT_Fixed x_scale, y_scale;
/* this is not a PFR font */
if ( aoutline_resolution )
*aoutline_resolution = face->units_per_EM;
if ( ametrics_resolution )
*ametrics_resolution = face->units_per_EM;
x_scale = y_scale = 0x10000L;
if ( face->size )
{
x_scale = face->size->metrics.x_scale;
y_scale = face->size->metrics.y_scale;
}
if ( ametrics_x_scale )
*ametrics_x_scale = x_scale;
if ( ametrics_y_scale )
*ametrics_y_scale = y_scale;
error = FT_THROW( Unknown_File_Format );
}
return error;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Kerning( FT_Face face,
FT_UInt left,
FT_UInt right,
FT_Vector *avector )
{
FT_Error error;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
if ( !avector )
return FT_THROW( Invalid_Argument );
service = ft_pfr_check( face );
if ( service )
error = service->get_kerning( face, left, right, avector );
else
error = FT_Get_Kerning( face, left, right,
FT_KERNING_UNSCALED, avector );
return error;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Advance( FT_Face face,
FT_UInt gindex,
FT_Pos *aadvance )
{
FT_Error error;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
if ( !aadvance )
return FT_THROW( Invalid_Argument );
service = ft_pfr_check( face );
if ( service )
error = service->get_advance( face, gindex, aadvance );
else
/* XXX: TODO: PROVIDE ADVANCE-LOADING METHOD TO ALL FONT DRIVERS */
error = FT_THROW( Invalid_Argument );
return error;
}
/* END */