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 */
203