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

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftmm.c                                                                 */
   4 /*                                                                         */
   5 /*    Multiple Master font support (body).                                 */
   6 /*                                                                         */
   7 /*  Copyright 1996-2001, 2003, 2004, 2009, 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
  19 #include <ft2build.h>
  20 #include FT_INTERNAL_DEBUG_H
  21
  22 #include FT_MULTIPLE_MASTERS_H
  23 #include FT_INTERNAL_OBJECTS_H
  24 #include FT_SERVICE_MULTIPLE_MASTERS_H
  25
  26
  27   /*************************************************************************/
  28   /*                                                                       */
  29   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
  30   /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
  31   /* messages during execution.                                            */
  32   /*                                                                       */
  33 #undef  FT_COMPONENT
  34 #define FT_COMPONENT  trace_mm
  35
  36
  37   static FT_Error
  38   ft_face_get_mm_service( FT_Face                   face,
  39                           FT_Service_MultiMasters  *aservice )
  40   {
  41     FT_Error  error;
  42
  43
  44     *aservice = NULL;
  45
  46     if ( !face )
  47       return FT_THROW( Invalid_Face_Handle );
  48
  49     error = FT_ERR( Invalid_Argument );
  50
  51     if ( FT_HAS_MULTIPLE_MASTERS( face ) )
  52     {
  53       FT_FACE_LOOKUP_SERVICE( face,
  54                               *aservice,
  55                               MULTI_MASTERS );
  56
  57       if ( *aservice )
  58         error = FT_Err_Ok;
  59     }
  60
  61     return error;
  62   }
  63
  64
  65   /* documentation is in ftmm.h */
  66
  67   FT_EXPORT_DEF( FT_Error )
  68   FT_Get_Multi_Master( FT_Face           face,
  69                        FT_Multi_Master  *amaster )
  70   {
  71     FT_Error                 error;
  72     FT_Service_MultiMasters  service;
  73
  74
  75     error = ft_face_get_mm_service( face, &service );
  76     if ( !error )
  77     {
  78       error = FT_ERR( Invalid_Argument );
  79       if ( service->get_mm )
  80         error = service->get_mm( face, amaster );
  81     }
  82
  83     return error;
  84   }
  85
  86
  87   /* documentation is in ftmm.h */
  88
  89   FT_EXPORT_DEF( FT_Error )
  90   FT_Get_MM_Var( FT_Face      face,
  91                  FT_MM_Var*  *amaster )
  92   {
  93     FT_Error                 error;
  94     FT_Service_MultiMasters  service;
  95
  96
  97     error = ft_face_get_mm_service( face, &service );
  98     if ( !error )
  99     {
 100       error = FT_ERR( Invalid_Argument );
 101       if ( service->get_mm_var )
 102         error = service->get_mm_var( face, amaster );
 103     }
 104
 105     return error;
 106   }
 107
 108
 109   /* documentation is in ftmm.h */
 110
 111   FT_EXPORT_DEF( FT_Error )
 112   FT_Set_MM_Design_Coordinates( FT_Face   face,
 113                                 FT_UInt   num_coords,
 114                                 FT_Long*  coords )
 115   {
 116     FT_Error                 error;
 117     FT_Service_MultiMasters  service;
 118
 119
 120     error = ft_face_get_mm_service( face, &service );
 121     if ( !error )
 122     {
 123       error = FT_ERR( Invalid_Argument );
 124       if ( service->set_mm_design )
 125         error = service->set_mm_design( face, num_coords, coords );
 126     }
 127
 128     return error;
 129   }
 130
 131
 132   /* documentation is in ftmm.h */
 133
 134   FT_EXPORT_DEF( FT_Error )
 135   FT_Set_Var_Design_Coordinates( FT_Face    face,
 136                                  FT_UInt    num_coords,
 137                                  FT_Fixed*  coords )
 138   {
 139     FT_Error                 error;
 140     FT_Service_MultiMasters  service;
 141
 142
 143     error = ft_face_get_mm_service( face, &service );
 144     if ( !error )
 145     {
 146       error = FT_ERR( Invalid_Argument );
 147       if ( service->set_var_design )
 148         error = service->set_var_design( face, num_coords, coords );
 149     }
 150
 151     return error;
 152   }
 153
 154
 155   /* documentation is in ftmm.h */
 156
 157   FT_EXPORT_DEF( FT_Error )
 158   FT_Set_MM_Blend_Coordinates( FT_Face    face,
 159                                FT_UInt    num_coords,
 160                                FT_Fixed*  coords )
 161   {
 162     FT_Error                 error;
 163     FT_Service_MultiMasters  service;
 164
 165
 166     error = ft_face_get_mm_service( face, &service );
 167     if ( !error )
 168     {
 169       error = FT_ERR( Invalid_Argument );
 170       if ( service->set_mm_blend )
 171          error = service->set_mm_blend( face, num_coords, coords );
 172     }
 173
 174     return error;
 175   }
 176
 177
 178   /* documentation is in ftmm.h */
 179
 180   /* This is exactly the same as the previous function.  It exists for */
 181   /* orthogonality.                                                    */
 182
 183   FT_EXPORT_DEF( FT_Error )
 184   FT_Set_Var_Blend_Coordinates( FT_Face    face,
 185                                 FT_UInt    num_coords,
 186                                 FT_Fixed*  coords )
 187   {
 188     FT_Error                 error;
 189     FT_Service_MultiMasters  service;
 190
 191
 192     error = ft_face_get_mm_service( face, &service );
 193     if ( !error )
 194     {
 195       error = FT_ERR( Invalid_Argument );
 196       if ( service->set_mm_blend )
 197          error = service->set_mm_blend( face, num_coords, coords );
 198     }
 199
 200     return error;
 201   }
 202
 203
 204 /* END */