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comparison mupdf-source/thirdparty/harfbuzz/src/hb-aat-map.hh @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
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
33 struct hb_aat_map_t
34 {
35 friend struct hb_aat_map_builder_t;
36
37 public:
38
39 void init ()
40 {
41 hb_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
50 struct 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_) :
56 face (face_),
57 props (props_) {}
58
59 HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value=1);
60
61 HB_INTERNAL void compile (hb_aat_map_t &m);
62
63 public:
64 struct feature_info_t
65 {
66 hb_aat_layout_feature_type_t type;
67 hb_aat_layout_feature_selector_t setting;
68 bool is_exclusive;
69 unsigned seq; /* For stable sorting only. */
70
71 HB_INTERNAL static int cmp (const void *pa, const void *pb)
72 {
73 const feature_info_t *a = (const feature_info_t *) pa;
74 const feature_info_t *b = (const feature_info_t *) pb;
75 if (a->type != b->type) return (a->type < b->type ? -1 : 1);
76 if (!a->is_exclusive &&
77 (a->setting & ~1) != (b->setting & ~1)) return (a->setting < b->setting ? -1 : 1);
78 return (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0);
79 }
80
81 /* compares type & setting only, not is_exclusive flag or seq number */
82 int cmp (const feature_info_t& f) const
83 {
84 return (f.type != type) ? (f.type < type ? -1 : 1) :
85 (f.setting != setting) ? (f.setting < setting ? -1 : 1) : 0;
86 }
87 };
88
89 public:
90 hb_face_t *face;
91 hb_segment_properties_t props;
92
93 public:
94 hb_sorted_vector_t<feature_info_t> features;
95 };
96
97
98 #endif /* HB_AAT_MAP_HH */