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/***************************************************************************/
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/* */
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/* ftpfr.c */
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/* */
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/* FreeType API for accessing PFR-specific data (body). */
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/* */
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/* Copyright 2002, 2003, 2004, 2008, 2010 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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#include <ft2build.h>
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#include FT_INTERNAL_OBJECTS_H
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#include FT_SERVICE_PFR_H
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/* check the format */
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static FT_Service_PfrMetrics
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ft_pfr_check( FT_Face face )
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{
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FT_Service_PfrMetrics service = NULL;
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if ( face )
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FT_FACE_LOOKUP_SERVICE( face, service, PFR_METRICS );
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return service;
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}
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/* documentation is in ftpfr.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_PFR_Metrics( FT_Face face,
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FT_UInt *aoutline_resolution,
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FT_UInt *ametrics_resolution,
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FT_Fixed *ametrics_x_scale,
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FT_Fixed *ametrics_y_scale )
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{
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FT_Error error = FT_Err_Ok;
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FT_Service_PfrMetrics service;
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if ( !face )
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return FT_Err_Invalid_Argument;
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service = ft_pfr_check( face );
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if ( service )
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{
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error = service->get_metrics( face,
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aoutline_resolution,
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ametrics_resolution,
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ametrics_x_scale,
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ametrics_y_scale );
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}
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else
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{
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FT_Fixed x_scale, y_scale;
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/* this is not a PFR font */
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if ( aoutline_resolution )
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*aoutline_resolution = face->units_per_EM;
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if ( ametrics_resolution )
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*ametrics_resolution = face->units_per_EM;
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x_scale = y_scale = 0x10000L;
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if ( face->size )
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{
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x_scale = face->size->metrics.x_scale;
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y_scale = face->size->metrics.y_scale;
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}
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if ( ametrics_x_scale )
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*ametrics_x_scale = x_scale;
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if ( ametrics_y_scale )
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*ametrics_y_scale = y_scale;
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error = FT_Err_Unknown_File_Format;
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}
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return error;
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}
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/* documentation is in ftpfr.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_PFR_Kerning( FT_Face face,
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FT_UInt left,
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FT_UInt right,
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FT_Vector *avector )
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{
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FT_Error error;
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FT_Service_PfrMetrics service;
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if ( !face )
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return FT_Err_Invalid_Argument;
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service = ft_pfr_check( face );
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if ( service )
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error = service->get_kerning( face, left, right, avector );
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else
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error = FT_Get_Kerning( face, left, right,
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FT_KERNING_UNSCALED, avector );
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return error;
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}
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/* documentation is in ftpfr.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_PFR_Advance( FT_Face face,
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FT_UInt gindex,
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FT_Pos *aadvance )
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{
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FT_Error error;
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FT_Service_PfrMetrics service;
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service = ft_pfr_check( face );
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if ( service )
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{
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error = service->get_advance( face, gindex, aadvance );
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}
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else
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/* XXX: TODO: PROVIDE ADVANCE-LOADING METHOD TO ALL FONT DRIVERS */
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error = FT_Err_Invalid_Argument;
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return error;
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}
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/* END */
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