| /***************************************************************************/ |
| /* */ |
| /* 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 */ |