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comparison mupdf-source/thirdparty/harfbuzz/src/hb-ot-shape.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 © 2010 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_OT_SHAPE_HH
28 #define HB_OT_SHAPE_HH
29
30 #include "hb.hh"
31
32 #include "hb-ot-map.hh"
33 #include "hb-aat-map.hh"
34
35
36 struct hb_ot_shape_plan_key_t
37 {
38 unsigned int variations_index[2];
39
40 void init (hb_face_t *face,
41 const int *coords,
42 unsigned num_coords)
43 {
44 for (unsigned int table_index = 0; table_index < 2; table_index++)
45 hb_ot_layout_table_find_feature_variations (face,
46 table_tags[table_index],
47 coords,
48 num_coords,
49 &variations_index[table_index]);
50 }
51
52 bool equal (const hb_ot_shape_plan_key_t *other)
53 {
54 return 0 == hb_memcmp (this, other, sizeof (*this));
55 }
56 };
57
58
59 struct hb_shape_plan_key_t;
60
61 struct hb_ot_shape_plan_t
62 {
63 ~hb_ot_shape_plan_t () { fini (); }
64
65 hb_segment_properties_t props;
66 const struct hb_ot_shaper_t *shaper;
67 hb_ot_map_t map;
68 hb_aat_map_t aat_map;
69 const void *data;
70 #ifndef HB_NO_OT_SHAPE_FRACTIONS
71 hb_mask_t frac_mask, numr_mask, dnom_mask;
72 #else
73 static constexpr hb_mask_t frac_mask = 0;
74 static constexpr hb_mask_t numr_mask = 0;
75 static constexpr hb_mask_t dnom_mask = 0;
76 #endif
77 hb_mask_t rtlm_mask;
78 #ifndef HB_NO_OT_KERN
79 hb_mask_t kern_mask;
80 #else
81 static constexpr hb_mask_t kern_mask = 0;
82 #endif
83 #ifndef HB_NO_AAT_SHAPE
84 hb_mask_t trak_mask;
85 #else
86 static constexpr hb_mask_t trak_mask = 0;
87 #endif
88
89 #ifndef HB_NO_OT_KERN
90 bool requested_kerning : 1;
91 #else
92 static constexpr bool requested_kerning = false;
93 #endif
94 #ifndef HB_NO_AAT_SHAPE
95 bool requested_tracking : 1;
96 #else
97 static constexpr bool requested_tracking = false;
98 #endif
99 #ifndef HB_NO_OT_SHAPE_FRACTIONS
100 bool has_frac : 1;
101 #else
102 static constexpr bool has_frac = false;
103 #endif
104 bool has_vert : 1;
105 bool has_gpos_mark : 1;
106 bool zero_marks : 1;
107 bool fallback_glyph_classes : 1;
108 bool fallback_mark_positioning : 1;
109 bool adjust_mark_positioning_when_zeroing : 1;
110
111 bool apply_gpos : 1;
112 #ifndef HB_NO_OT_KERN
113 bool apply_kern : 1;
114 #else
115 static constexpr bool apply_kern = false;
116 #endif
117 bool apply_fallback_kern : 1;
118 #ifndef HB_NO_AAT_SHAPE
119 bool apply_kerx : 1;
120 bool apply_morx : 1;
121 bool apply_trak : 1;
122 #else
123 static constexpr bool apply_kerx = false;
124 static constexpr bool apply_morx = false;
125 static constexpr bool apply_trak = false;
126 #endif
127
128 void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
129 {
130 unsigned int table_index;
131 switch (table_tag) {
132 case HB_OT_TAG_GSUB: table_index = 0; break;
133 case HB_OT_TAG_GPOS: table_index = 1; break;
134 default: return;
135 }
136 map.collect_lookups (table_index, lookups);
137 }
138
139 HB_INTERNAL bool init0 (hb_face_t *face,
140 const hb_shape_plan_key_t *key);
141 HB_INTERNAL void fini ();
142
143 HB_INTERNAL void substitute (hb_font_t *font, hb_buffer_t *buffer) const;
144 HB_INTERNAL void position (hb_font_t *font, hb_buffer_t *buffer) const;
145 };
146
147 struct hb_shape_plan_t;
148
149 struct hb_ot_shape_planner_t
150 {
151 /* In the order that they are filled in. */
152 hb_face_t *face;
153 hb_segment_properties_t props;
154 hb_ot_map_builder_t map;
155 hb_aat_map_builder_t aat_map;
156 #ifndef HB_NO_AAT_SHAPE
157 bool apply_morx : 1;
158 #else
159 static constexpr bool apply_morx = false;
160 #endif
161 bool script_zero_marks : 1;
162 bool script_fallback_mark_positioning : 1;
163 const struct hb_ot_shaper_t *shaper;
164
165 HB_INTERNAL hb_ot_shape_planner_t (hb_face_t *face,
166 const hb_segment_properties_t &props);
167
168 HB_INTERNAL void compile (hb_ot_shape_plan_t &plan,
169 const hb_ot_shape_plan_key_t &key);
170 };
171
172
173 #endif /* HB_OT_SHAPE_HH */