reactos/lib/3rdparty/freetype/src/base/ftpfr.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftpfr.c                                                                */
   4 /*                                                                         */
   5 /*    FreeType API for accessing PFR-specific data (body).                 */
   6 /*                                                                         */
   7 /*  Copyright 2002-2004, 2008, 2010, 2013 by                               */
   8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
   9 /*                                                                         */
  10 /*  This file is part of the FreeType project, and may only be used,       */
  11 /*  modified, and distributed under the terms of the FreeType project      */
  12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  13 /*  this file you indicate that you have read the license and              */
  14 /*  understand and accept it fully.                                        */
  15 /*                                                                         */
  16 /***************************************************************************/
  17
  18 #include <ft2build.h>
  19 #include FT_INTERNAL_DEBUG_H
  20
  21 #include FT_INTERNAL_OBJECTS_H
  22 #include FT_SERVICE_PFR_H
  23
  24
  25   /* check the format */
  26   static FT_Service_PfrMetrics
  27   ft_pfr_check( FT_Face  face )
  28   {
  29     FT_Service_PfrMetrics  service = NULL;
  30
  31
  32     if ( face )
  33       FT_FACE_LOOKUP_SERVICE( face, service, PFR_METRICS );
  34
  35     return service;
  36   }
  37
  38
  39   /* documentation is in ftpfr.h */
  40
  41   FT_EXPORT_DEF( FT_Error )
  42   FT_Get_PFR_Metrics( FT_Face    face,
  43                       FT_UInt   *aoutline_resolution,
  44                       FT_UInt   *ametrics_resolution,
  45                       FT_Fixed  *ametrics_x_scale,
  46                       FT_Fixed  *ametrics_y_scale )
  47   {
  48     FT_Error               error = FT_Err_Ok;
  49     FT_Service_PfrMetrics  service;
  50
  51
  52     if ( !face )
  53       return FT_THROW( Invalid_Argument );
  54
  55     service = ft_pfr_check( face );
  56     if ( service )
  57     {
  58       error = service->get_metrics( face,
  59                                     aoutline_resolution,
  60                                     ametrics_resolution,
  61                                     ametrics_x_scale,
  62                                     ametrics_y_scale );
  63     }
  64     else
  65     {
  66       FT_Fixed  x_scale, y_scale;
  67
  68
  69       /* this is not a PFR font */
  70       if ( aoutline_resolution )
  71         *aoutline_resolution = face->units_per_EM;
  72
  73       if ( ametrics_resolution )
  74         *ametrics_resolution = face->units_per_EM;
  75
  76       x_scale = y_scale = 0x10000L;
  77       if ( face->size )
  78       {
  79         x_scale = face->size->metrics.x_scale;
  80         y_scale = face->size->metrics.y_scale;
  81       }
  82
  83       if ( ametrics_x_scale )
  84         *ametrics_x_scale = x_scale;
  85
  86       if ( ametrics_y_scale )
  87         *ametrics_y_scale = y_scale;
  88
  89       error = FT_THROW( Unknown_File_Format );
  90     }
  91
  92     return error;
  93   }
  94
  95
  96   /* documentation is in ftpfr.h */
  97
  98   FT_EXPORT_DEF( FT_Error )
  99   FT_Get_PFR_Kerning( FT_Face     face,
 100                       FT_UInt     left,
 101                       FT_UInt     right,
 102                       FT_Vector  *avector )
 103   {
 104     FT_Error               error;
 105     FT_Service_PfrMetrics  service;
 106
 107
 108     if ( !face )
 109       return FT_THROW( Invalid_Argument );
 110
 111     service = ft_pfr_check( face );
 112     if ( service )
 113       error = service->get_kerning( face, left, right, avector );
 114     else
 115       error = FT_Get_Kerning( face, left, right,
 116                               FT_KERNING_UNSCALED, avector );
 117
 118     return error;
 119   }
 120
 121
 122   /* documentation is in ftpfr.h */
 123
 124   FT_EXPORT_DEF( FT_Error )
 125   FT_Get_PFR_Advance( FT_Face   face,
 126                       FT_UInt   gindex,
 127                       FT_Pos   *aadvance )
 128   {
 129     FT_Error               error;
 130     FT_Service_PfrMetrics  service;
 131
 132
 133     service = ft_pfr_check( face );
 134     if ( service )
 135     {
 136       error = service->get_advance( face, gindex, aadvance );
 137     }
 138     else
 139       /* XXX: TODO: PROVIDE ADVANCE-LOADING METHOD TO ALL FONT DRIVERS */
 140       error = FT_THROW( Invalid_Argument );
 141
 142     return error;
 143   }
 144
 145
 146 /* END */