1/*
2 * Copyright © 2018 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Behdad Esfahbod
25 */
26
27#ifndef HB_AAT_MAP_HH
28#define HB_AAT_MAP_HH
29
30#include "hb.hh"
31
32
33struct hb_aat_map_t
34{
35 friend struct hb_aat_map_builder_t;
36
37 public:
38
39 void init ()
40 {
41 memset (this, 0, sizeof (*this));
42 chain_flags.init ();
43 }
44 void fini () { chain_flags.fini (); }
45
46 public:
47 hb_vector_t<hb_mask_t> chain_flags;
48};
49
50struct hb_aat_map_builder_t
51{
52 public:
53
54 HB_INTERNAL hb_aat_map_builder_t (hb_face_t *face_,
55 const hb_segment_properties_t *props_ HB_UNUSED) :
56 face (face_) {}
57
58 HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value=1);
59
60 HB_INTERNAL void compile (hb_aat_map_t &m);
61
62 public:
63 struct feature_info_t
64 {
65 hb_aat_layout_feature_type_t type;
66 hb_aat_layout_feature_selector_t setting;
67 unsigned seq; /* For stable sorting only. */
68
69 static int cmp (const void *pa, const void *pb)
70 {
71 const feature_info_t *a = (const feature_info_t *) pa;
72 const feature_info_t *b = (const feature_info_t *) pb;
73 return (a->type != b->type) ? (a->type < b->type ? -1 : 1) :
74 (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0);
75 }
76
77 int cmp (hb_aat_layout_feature_type_t ty) const
78 {
79 return (type != ty) ? (type < ty ? -1 : 1) : 0;
80 }
81 };
82
83 public:
84 hb_face_t *face;
85
86 public:
87 hb_vector_t<feature_info_t> features;
88};
89
90
91#endif /* HB_AAT_MAP_HH */
92