1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* Copyright © 2017 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#include "hb.hh"
#ifndef HB_NO_VAR
#include "hb-ot-var.h"
#include "hb-ot-var-avar-table.hh"
#include "hb-ot-var-fvar-table.hh"
#include "hb-ot-var-mvar-table.hh"
/**
* SECTION:hb-ot-var
* @title: hb-ot-var
* @short_description: OpenType Font Variations
* @include: hb-ot.h
*
* Functions for fetching information about OpenType Variable Fonts.
**/
/*
* fvar/avar
*/
/**
* hb_ot_var_has_data:
* @face: #hb_face_t to test
*
* This function allows to verify the presence of OpenType variation data on the face.
*
* Return value: true if face has a `fvar' table and false otherwise
*
* Since: 1.4.2
**/
hb_bool_t
hb_ot_var_has_data (hb_face_t *face)
{
return face->table.fvar->has_data ();
}
/**
* hb_ot_var_get_axis_count:
*
* Since: 1.4.2
**/
unsigned int
hb_ot_var_get_axis_count (hb_face_t *face)
{
return face->table.fvar->get_axis_count ();
}
#ifndef HB_DISABLE_DEPRECATED
/**
* hb_ot_var_get_axes:
*
* Since: 1.4.2
* Deprecated: 2.2.0
**/
unsigned int
hb_ot_var_get_axes (hb_face_t *face,
unsigned int start_offset,
unsigned int *axes_count /* IN/OUT */,
hb_ot_var_axis_t *axes_array /* OUT */)
{
return face->table.fvar->get_axes_deprecated (start_offset, axes_count, axes_array);
}
/**
* hb_ot_var_find_axis:
*
* Since: 1.4.2
* Deprecated: 2.2.0
**/
hb_bool_t
hb_ot_var_find_axis (hb_face_t *face,
hb_tag_t axis_tag,
unsigned int *axis_index,
hb_ot_var_axis_t *axis_info)
{
return face->table.fvar->find_axis_deprecated (axis_tag, axis_index, axis_info);
}
#endif
/**
* hb_ot_var_get_axis_infos:
*
* Since: 2.2.0
**/
HB_EXTERN unsigned int
hb_ot_var_get_axis_infos (hb_face_t *face,
unsigned int start_offset,
unsigned int *axes_count /* IN/OUT */,
hb_ot_var_axis_info_t *axes_array /* OUT */)
{
return face->table.fvar->get_axis_infos (start_offset, axes_count, axes_array);
}
/**
* hb_ot_var_find_axis_info:
*
* Since: 2.2.0
**/
HB_EXTERN hb_bool_t
hb_ot_var_find_axis_info (hb_face_t *face,
hb_tag_t axis_tag,
hb_ot_var_axis_info_t *axis_info)
{
return face->table.fvar->find_axis_info (axis_tag, axis_info);
}
/*
* Named instances.
*/
unsigned int
hb_ot_var_get_named_instance_count (hb_face_t *face)
{
return face->table.fvar->get_instance_count ();
}
hb_ot_name_id_t
hb_ot_var_named_instance_get_subfamily_name_id (hb_face_t *face,
unsigned int instance_index)
{
return face->table.fvar->get_instance_subfamily_name_id (instance_index);
}
hb_ot_name_id_t
hb_ot_var_named_instance_get_postscript_name_id (hb_face_t *face,
unsigned int instance_index)
{
return face->table.fvar->get_instance_postscript_name_id (instance_index);
}
unsigned int
hb_ot_var_named_instance_get_design_coords (hb_face_t *face,
unsigned int instance_index,
unsigned int *coords_length, /* IN/OUT */
float *coords /* OUT */)
{
return face->table.fvar->get_instance_coords (instance_index, coords_length, coords);
}
/**
* hb_ot_var_normalize_variations:
*
* Since: 1.4.2
**/
void
hb_ot_var_normalize_variations (hb_face_t *face,
const hb_variation_t *variations, /* IN */
unsigned int variations_length,
int *coords, /* OUT */
unsigned int coords_length)
{
for (unsigned int i = 0; i < coords_length; i++)
coords[i] = 0;
const OT::fvar &fvar = *face->table.fvar;
for (unsigned int i = 0; i < variations_length; i++)
{
hb_ot_var_axis_info_t info;
if (hb_ot_var_find_axis_info (face, variations[i].tag, &info) &&
info.axis_index < coords_length)
coords[info.axis_index] = fvar.normalize_axis_value (info.axis_index, variations[i].value);
}
face->table.avar->map_coords (coords, coords_length);
}
/**
* hb_ot_var_normalize_coords:
*
* Since: 1.4.2
**/
void
hb_ot_var_normalize_coords (hb_face_t *face,
unsigned int coords_length,
const float *design_coords, /* IN */
int *normalized_coords /* OUT */)
{
const OT::fvar &fvar = *face->table.fvar;
for (unsigned int i = 0; i < coords_length; i++)
normalized_coords[i] = fvar.normalize_axis_value (i, design_coords[i]);
face->table.avar->map_coords (normalized_coords, coords_length);
}
#endif
|