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