1 /***************************************************************************/
2 /* */
3 /* ftmm.c */
4 /* */
5 /* Multiple Master font support (body). */
6 /* */
7 /* Copyright 1996-2018 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 #include FT_SERVICE_METRICS_VARIATIONS_H
26
27
28 /*************************************************************************/
29 /* */
30 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
31 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
32 /* messages during execution. */
33 /* */
34 #undef FT_COMPONENT
35 #define FT_COMPONENT trace_mm
36
37
38 static FT_Error
39 ft_face_get_mm_service( FT_Face face,
40 FT_Service_MultiMasters *aservice )
41 {
42 FT_Error error;
43
44
45 *aservice = NULL;
46
47 if ( !face )
48 return FT_THROW( Invalid_Face_Handle );
49
50 error = FT_ERR( Invalid_Argument );
51
52 if ( FT_HAS_MULTIPLE_MASTERS( face ) )
53 {
54 FT_FACE_LOOKUP_SERVICE( face,
55 *aservice,
176
177
178 /* check of `face' delayed to `ft_face_get_mm_service' */
179
180 if ( num_coords && !coords )
181 return FT_THROW( Invalid_Argument );
182
183 error = ft_face_get_mm_service( face, &service );
184 if ( !error )
185 {
186 error = FT_ERR( Invalid_Argument );
187 if ( service->set_mm_design )
188 error = service->set_mm_design( face, num_coords, coords );
189 }
190
191 /* enforce recomputation of auto-hinting data */
192 if ( !error && face->autohint.finalizer )
193 {
194 face->autohint.finalizer( face->autohint.data );
195 face->autohint.data = NULL;
196 }
197
198 return error;
199 }
200
201
202 /* documentation is in ftmm.h */
203
204 FT_EXPORT_DEF( FT_Error )
205 FT_Set_Var_Design_Coordinates( FT_Face face,
206 FT_UInt num_coords,
207 FT_Fixed* coords )
208 {
209 FT_Error error;
210 FT_Service_MultiMasters service_mm = NULL;
211 FT_Service_MetricsVariations service_mvar = NULL;
212
213
214 /* check of `face' delayed to `ft_face_get_mm_service' */
215
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1 /****************************************************************************
2 *
3 * ftmm.c
4 *
5 * Multiple Master font support (body).
6 *
7 * Copyright (C) 1996-2019 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 #include FT_SERVICE_METRICS_VARIATIONS_H
26
27
28 /**************************************************************************
29 *
30 * The macro FT_COMPONENT is used in trace mode. It is an implicit
31 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
32 * messages during execution.
33 */
34 #undef FT_COMPONENT
35 #define FT_COMPONENT mm
36
37
38 static FT_Error
39 ft_face_get_mm_service( FT_Face face,
40 FT_Service_MultiMasters *aservice )
41 {
42 FT_Error error;
43
44
45 *aservice = NULL;
46
47 if ( !face )
48 return FT_THROW( Invalid_Face_Handle );
49
50 error = FT_ERR( Invalid_Argument );
51
52 if ( FT_HAS_MULTIPLE_MASTERS( face ) )
53 {
54 FT_FACE_LOOKUP_SERVICE( face,
55 *aservice,
176
177
178 /* check of `face' delayed to `ft_face_get_mm_service' */
179
180 if ( num_coords && !coords )
181 return FT_THROW( Invalid_Argument );
182
183 error = ft_face_get_mm_service( face, &service );
184 if ( !error )
185 {
186 error = FT_ERR( Invalid_Argument );
187 if ( service->set_mm_design )
188 error = service->set_mm_design( face, num_coords, coords );
189 }
190
191 /* enforce recomputation of auto-hinting data */
192 if ( !error && face->autohint.finalizer )
193 {
194 face->autohint.finalizer( face->autohint.data );
195 face->autohint.data = NULL;
196 }
197
198 return error;
199 }
200
201
202 /* documentation is in ftmm.h */
203
204 FT_EXPORT_DEF( FT_Error )
205 FT_Set_MM_WeightVector( FT_Face face,
206 FT_UInt len,
207 FT_Fixed* weightvector )
208 {
209 FT_Error error;
210 FT_Service_MultiMasters service;
211
212
213 /* check of `face' delayed to `ft_face_get_mm_service' */
214
215 if ( len && !weightvector )
216 return FT_THROW( Invalid_Argument );
217
218 error = ft_face_get_mm_service( face, &service );
219 if ( !error )
220 {
221 error = FT_ERR( Invalid_Argument );
222 if ( service->set_mm_weightvector )
223 error = service->set_mm_weightvector( face, len, weightvector );
224 }
225
226 /* enforce recomputation of auto-hinting data */
227 if ( !error && face->autohint.finalizer )
228 {
229 face->autohint.finalizer( face->autohint.data );
230 face->autohint.data = NULL;
231 }
232
233 return error;
234 }
235
236
237 FT_EXPORT_DEF( FT_Error )
238 FT_Get_MM_WeightVector( FT_Face face,
239 FT_UInt* len,
240 FT_Fixed* weightvector )
241 {
242 FT_Error error;
243 FT_Service_MultiMasters service;
244
245
246 /* check of `face' delayed to `ft_face_get_mm_service' */
247
248 if ( len && !weightvector )
249 return FT_THROW( Invalid_Argument );
250
251 error = ft_face_get_mm_service( face, &service );
252 if ( !error )
253 {
254 error = FT_ERR( Invalid_Argument );
255 if ( service->get_mm_weightvector )
256 error = service->get_mm_weightvector( face, len, weightvector );
257 }
258
259 return error;
260 }
261
262
263 /* documentation is in ftmm.h */
264
265 FT_EXPORT_DEF( FT_Error )
266 FT_Set_Var_Design_Coordinates( FT_Face face,
267 FT_UInt num_coords,
268 FT_Fixed* coords )
269 {
270 FT_Error error;
271 FT_Service_MultiMasters service_mm = NULL;
272 FT_Service_MetricsVariations service_mvar = NULL;
273
274
275 /* check of `face' delayed to `ft_face_get_mm_service' */
276
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