/***************************************************************************/ | |
/* */ | |
/* ftpfr.c */ | |
/* */ | |
/* FreeType API for accessing PFR-specific data (body). */ | |
/* */ | |
/* Copyright 2002-2015 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 */ |