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comparison mupdf-source/thirdparty/harfbuzz/src/hb-face.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 © 2009 Red Hat, Inc.
3 * Copyright © 2011 Google, Inc.
4 *
5 * This is part of HarfBuzz, a text shaping library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
27 */
28
29 #ifndef HB_FACE_HH
30 #define HB_FACE_HH
31
32 #include "hb.hh"
33
34 #include "hb-shaper.hh"
35 #include "hb-shape-plan.hh"
36 #include "hb-ot-face.hh"
37
38
39 /*
40 * hb_face_t
41 */
42
43 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INSTANTIATE_SHAPERS(shaper, face);
44 #include "hb-shaper-list.hh"
45 #undef HB_SHAPER_IMPLEMENT
46
47 struct hb_face_t
48 {
49 hb_object_header_t header;
50
51 hb_reference_table_func_t reference_table_func;
52 void *user_data;
53 hb_destroy_func_t destroy;
54
55 unsigned int index; /* Face index in a collection, zero-based. */
56 mutable hb_atomic_int_t upem; /* Units-per-EM. */
57 mutable hb_atomic_int_t num_glyphs; /* Number of glyphs. */
58
59 hb_shaper_object_dataset_t<hb_face_t> data;/* Various shaper data. */
60 hb_ot_face_t table; /* All the face's tables. */
61
62 /* Cache */
63 struct plan_node_t
64 {
65 hb_shape_plan_t *shape_plan;
66 plan_node_t *next;
67 };
68 #ifndef HB_NO_SHAPER
69 hb_atomic_ptr_t<plan_node_t> shape_plans;
70 #endif
71
72 hb_blob_t *reference_table (hb_tag_t tag) const
73 {
74 hb_blob_t *blob;
75
76 if (unlikely (!reference_table_func))
77 return hb_blob_get_empty ();
78
79 blob = reference_table_func (/*XXX*/const_cast<hb_face_t *> (this), tag, user_data);
80 if (unlikely (!blob))
81 return hb_blob_get_empty ();
82
83 return blob;
84 }
85
86 unsigned int get_upem () const
87 {
88 unsigned int ret = upem;
89 if (unlikely (!ret))
90 {
91 return load_upem ();
92 }
93 return ret;
94 }
95
96 unsigned int get_num_glyphs () const
97 {
98 unsigned int ret = num_glyphs;
99 if (unlikely (ret == UINT_MAX))
100 return load_num_glyphs ();
101 return ret;
102 }
103
104 private:
105 HB_INTERNAL unsigned int load_upem () const;
106 HB_INTERNAL unsigned int load_num_glyphs () const;
107 };
108 DECLARE_NULL_INSTANCE (hb_face_t);
109
110
111 #endif /* HB_FACE_HH */