Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 1 | /* |
Behdad Esfahbod | 2409d5f | 2011-04-21 17:14:28 -0400 | [diff] [blame] | 2 | * Copyright © 2007,2008,2009 Red Hat, Inc. |
Behdad Esfahbod | 4695246 | 2013-10-17 21:01:57 +0200 | [diff] [blame] | 3 | * Copyright © 2012,2013 Google, Inc. |
Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 4 | * |
Behdad Esfahbod | c755cb3 | 2010-04-22 00:11:43 -0400 | [diff] [blame] | 5 | * This is part of HarfBuzz, a text shaping library. |
Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 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 |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 26 | * Google Author(s): Behdad Esfahbod |
Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 27 | */ |
| 28 | |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 29 | #ifndef HB_OT_LAYOUT_HH |
| 30 | #define HB_OT_LAYOUT_HH |
Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 31 | |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 32 | #include "hb.hh" |
Behdad Esfahbod | 2c80296 | 2009-08-02 15:20:22 -0400 | [diff] [blame] | 33 | |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 34 | #include "hb-font.hh" |
| 35 | #include "hb-buffer.hh" |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 36 | #include "hb-open-type.hh" |
Behdad Esfahbod | 963413f | 2018-08-26 00:47:55 -0700 | [diff] [blame] | 37 | #include "hb-set-digest.hh" |
Behdad Esfahbod | fd92a3d | 2008-01-24 03:11:09 -0500 | [diff] [blame] | 38 | |
Behdad Esfahbod | 23c86aa | 2009-08-03 21:40:20 -0400 | [diff] [blame] | 39 | |
Behdad Esfahbod | b929100 | 2018-08-26 01:15:47 -0700 | [diff] [blame] | 40 | namespace OT |
| 41 | { |
| 42 | struct GDEF; |
| 43 | struct GSUB; |
| 44 | struct GPOS; |
| 45 | } |
| 46 | |
Behdad Esfahbod | d8c57e8 | 2018-08-26 09:03:31 -0700 | [diff] [blame] | 47 | HB_INTERNAL const OT::GDEF& _get_gdef (hb_face_t *face); |
Behdad Esfahbod | 3999094 | 2018-08-26 09:12:25 -0700 | [diff] [blame] | 48 | HB_INTERNAL const OT::GSUB& _get_gsub_relaxed (hb_face_t *face); |
| 49 | HB_INTERNAL const OT::GPOS& _get_gpos_relaxed (hb_face_t *face); |
Behdad Esfahbod | b929100 | 2018-08-26 01:15:47 -0700 | [diff] [blame] | 50 | |
| 51 | |
Behdad Esfahbod | a519588 | 2018-10-08 23:57:45 -0400 | [diff] [blame] | 52 | /* |
| 53 | * kern |
| 54 | */ |
| 55 | |
| 56 | HB_INTERNAL hb_bool_t |
| 57 | hb_ot_layout_has_kerning (hb_face_t *face); |
| 58 | |
| 59 | HB_INTERNAL void |
| 60 | hb_ot_layout_kern (hb_font_t *font, |
| 61 | hb_buffer_t *buffer, |
| 62 | hb_mask_t kern_mask); |
| 63 | |
| 64 | |
Behdad Esfahbod | 0f98fe8 | 2015-07-23 11:52:11 +0100 | [diff] [blame] | 65 | /* Private API corresponding to hb-ot-layout.h: */ |
| 66 | |
| 67 | HB_INTERNAL hb_bool_t |
| 68 | hb_ot_layout_table_find_feature (hb_face_t *face, |
| 69 | hb_tag_t table_tag, |
| 70 | hb_tag_t feature_tag, |
| 71 | unsigned int *feature_index); |
| 72 | |
| 73 | |
Behdad Esfahbod | 266b344 | 2011-05-03 00:35:53 -0400 | [diff] [blame] | 74 | /* |
| 75 | * GDEF |
| 76 | */ |
| 77 | |
Behdad Esfahbod | aa7044d | 2015-11-04 16:25:57 -0800 | [diff] [blame] | 78 | enum hb_ot_layout_glyph_props_flags_t |
Behdad Esfahbod | 05ad6b5 | 2013-10-18 00:45:59 +0200 | [diff] [blame] | 79 | { |
Behdad Esfahbod | 03058c3 | 2013-10-17 20:55:34 +0200 | [diff] [blame] | 80 | /* The following three match LookupFlags::Ignore* numbers. */ |
Behdad Esfahbod | 941b699 | 2013-10-17 20:47:33 +0200 | [diff] [blame] | 81 | HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u, |
| 82 | HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u, |
Behdad Esfahbod | 05ad6b5 | 2013-10-18 00:45:59 +0200 | [diff] [blame] | 83 | HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u, |
| 84 | |
| 85 | /* The following are used internally; not derived from GDEF. */ |
Behdad Esfahbod | 09675a8 | 2013-10-18 01:05:58 +0200 | [diff] [blame] | 86 | HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED = 0x10u, |
| 87 | HB_OT_LAYOUT_GLYPH_PROPS_LIGATED = 0x20u, |
Behdad Esfahbod | 832a6f9 | 2014-06-04 16:57:42 -0400 | [diff] [blame] | 88 | HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED = 0x40u, |
Behdad Esfahbod | 03058c3 | 2013-10-17 20:55:34 +0200 | [diff] [blame] | 89 | |
Behdad Esfahbod | 09675a8 | 2013-10-18 01:05:58 +0200 | [diff] [blame] | 90 | HB_OT_LAYOUT_GLYPH_PROPS_PRESERVE = HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED | |
Behdad Esfahbod | 832a6f9 | 2014-06-04 16:57:42 -0400 | [diff] [blame] | 91 | HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | |
| 92 | HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED |
Behdad Esfahbod | aa7044d | 2015-11-04 16:25:57 -0800 | [diff] [blame] | 93 | }; |
Chun-wei Fan | 167c327 | 2015-11-09 17:17:56 +0800 | [diff] [blame] | 94 | HB_MARK_AS_FLAG_T (hb_ot_layout_glyph_props_flags_t); |
Behdad Esfahbod | 5a08ecf | 2012-11-16 13:34:29 -0800 | [diff] [blame] | 95 | |
Behdad Esfahbod | ead428d | 2008-01-24 03:54:09 -0500 | [diff] [blame] | 96 | |
Behdad Esfahbod | 49c5ec5 | 2012-07-23 20:14:13 -0400 | [diff] [blame] | 97 | /* |
| 98 | * GSUB/GPOS |
| 99 | */ |
| 100 | |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 101 | HB_INTERNAL hb_bool_t |
Behdad Esfahbod | 362a990 | 2012-11-15 14:57:31 -0800 | [diff] [blame] | 102 | hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face, |
Behdad Esfahbod | d9b204d | 2012-08-23 16:22:28 -0400 | [diff] [blame] | 103 | unsigned int lookup_index, |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 104 | const hb_codepoint_t *glyphs, |
| 105 | unsigned int glyphs_length, |
Behdad Esfahbod | d9b204d | 2012-08-23 16:22:28 -0400 | [diff] [blame] | 106 | hb_bool_t zero_context); |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 107 | |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 108 | |
| 109 | /* Should be called before all the substitute_lookup's are done. */ |
| 110 | HB_INTERNAL void |
Behdad Esfahbod | afbcc24 | 2012-08-02 08:36:40 -0400 | [diff] [blame] | 111 | hb_ot_layout_substitute_start (hb_font_t *font, |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 112 | hb_buffer_t *buffer); |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 113 | |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 114 | |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 115 | namespace OT { |
Behdad Esfahbod | fd03449 | 2018-01-17 16:46:51 -0800 | [diff] [blame] | 116 | struct hb_ot_apply_context_t; |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 117 | struct SubstLookup; |
Behdad Esfahbod | 97e5913 | 2018-10-10 11:41:05 -0400 | [diff] [blame] | 118 | struct hb_ot_layout_lookup_accelerator_t; |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | HB_INTERNAL void |
Behdad Esfahbod | fd03449 | 2018-01-17 16:46:51 -0800 | [diff] [blame] | 122 | hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c, |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 123 | const OT::SubstLookup &lookup, |
Behdad Esfahbod | 97e5913 | 2018-10-10 11:41:05 -0400 | [diff] [blame] | 124 | const OT::hb_ot_layout_lookup_accelerator_t &accel); |
Behdad Esfahbod | bac1dd6 | 2013-05-02 18:52:24 -0400 | [diff] [blame] | 125 | |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 126 | |
Behdad Esfahbod | 7d8d58a | 2016-02-11 16:34:28 +0700 | [diff] [blame] | 127 | /* Should be called before all the position_lookup's are done. */ |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 128 | HB_INTERNAL void |
| 129 | hb_ot_layout_position_start (hb_font_t *font, |
| 130 | hb_buffer_t *buffer); |
| 131 | |
Behdad Esfahbod | a60ba79 | 2018-05-01 19:01:25 -0400 | [diff] [blame] | 132 | /* Should be called after all the position_lookup's are done, to fini advances. */ |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 133 | HB_INTERNAL void |
Behdad Esfahbod | 7d8d58a | 2016-02-11 16:34:28 +0700 | [diff] [blame] | 134 | hb_ot_layout_position_finish_advances (hb_font_t *font, |
| 135 | hb_buffer_t *buffer); |
| 136 | |
Behdad Esfahbod | a60ba79 | 2018-05-01 19:01:25 -0400 | [diff] [blame] | 137 | /* Should be called after hb_ot_layout_position_finish_advances, to fini offsets. */ |
Behdad Esfahbod | 7d8d58a | 2016-02-11 16:34:28 +0700 | [diff] [blame] | 138 | HB_INTERNAL void |
| 139 | hb_ot_layout_position_finish_offsets (hb_font_t *font, |
| 140 | hb_buffer_t *buffer); |
Behdad Esfahbod | b0e6a26 | 2012-08-02 08:11:14 -0400 | [diff] [blame] | 141 | |
Behdad Esfahbod | f860366 | 2012-07-30 02:38:39 -0400 | [diff] [blame] | 142 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 143 | /* |
| 144 | * Buffer var routines. |
| 145 | */ |
| 146 | |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 147 | /* buffer var allocations, used during the entire shaping process */ |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 148 | #define unicode_props() var2.u16[0] |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 149 | |
| 150 | /* buffer var allocations, used during the GSUB/GPOS processing */ |
| 151 | #define glyph_props() var1.u16[0] /* GDEF glyph properties */ |
| 152 | #define lig_props() var1.u8[2] /* GSUB/GPOS ligature tracking */ |
| 153 | #define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */ |
| 154 | |
Behdad Esfahbod | ac59651 | 2015-07-22 11:54:02 +0100 | [diff] [blame] | 155 | |
Behdad Esfahbod | 1c17c2b | 2017-08-11 19:06:07 -0700 | [diff] [blame] | 156 | /* Loop over syllables. Based on foreach_cluster(). */ |
Behdad Esfahbod | ac59651 | 2015-07-22 11:54:02 +0100 | [diff] [blame] | 157 | #define foreach_syllable(buffer, start, end) \ |
| 158 | for (unsigned int \ |
| 159 | _count = buffer->len, \ |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 160 | start = 0, end = _count ? _hb_next_syllable (buffer, 0) : 0; \ |
Behdad Esfahbod | ac59651 | 2015-07-22 11:54:02 +0100 | [diff] [blame] | 161 | start < _count; \ |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 162 | start = end, end = _hb_next_syllable (buffer, start)) |
Behdad Esfahbod | ac59651 | 2015-07-22 11:54:02 +0100 | [diff] [blame] | 163 | |
| 164 | static inline unsigned int |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 165 | _hb_next_syllable (hb_buffer_t *buffer, unsigned int start) |
Behdad Esfahbod | ac59651 | 2015-07-22 11:54:02 +0100 | [diff] [blame] | 166 | { |
| 167 | hb_glyph_info_t *info = buffer->info; |
| 168 | unsigned int count = buffer->len; |
| 169 | |
| 170 | unsigned int syllable = info[start].syllable(); |
| 171 | while (++start < count && syllable == info[start].syllable()) |
| 172 | ; |
| 173 | |
| 174 | return start; |
| 175 | } |
| 176 | |
| 177 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 178 | /* unicode_props */ |
| 179 | |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 180 | /* Design: |
| 181 | * unicode_props() is a two-byte number. The low byte includes: |
| 182 | * - General_Category: 5 bits. |
| 183 | * - A bit each for: |
| 184 | * * Is it Default_Ignorable(); we have a modified Default_Ignorable(). |
Behdad Esfahbod | 81e2b9b | 2017-10-15 10:48:19 +0200 | [diff] [blame] | 185 | * * Whether it's one of the three Mongolian Free Variation Selectors, |
| 186 | * CGJ, or other characters that are hidden but should not be ignored |
| 187 | * like most other Default_Ignorable()s do during matching. |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 188 | * * Whether it's a grapheme continuation. |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 189 | * |
| 190 | * The high-byte has different meanings, switched by the Gen-Cat: |
| 191 | * - For Mn,Mc,Me: the modified Combining_Class. |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 192 | * - For Cf: whether it's ZWJ, ZWNJ, or something else. |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 193 | * - For Ws: index of which space character this is, if space fallback |
| 194 | * is needed, ie. we don't set this by default, only if asked to. |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 195 | */ |
| 196 | |
Behdad Esfahbod | aa7044d | 2015-11-04 16:25:57 -0800 | [diff] [blame] | 197 | enum hb_unicode_props_flags_t { |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 198 | UPROPS_MASK_GEN_CAT = 0x001Fu, |
| 199 | UPROPS_MASK_IGNORABLE = 0x0020u, |
Behdad Esfahbod | 68106b1 | 2018-10-03 20:50:12 +0200 | [diff] [blame] | 200 | UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3, or TAG characters */ |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 201 | UPROPS_MASK_CONTINUATION=0x0080u, |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 202 | |
| 203 | /* If GEN_CAT=FORMAT, top byte masks: */ |
| 204 | UPROPS_MASK_Cf_ZWJ = 0x0100u, |
| 205 | UPROPS_MASK_Cf_ZWNJ = 0x0200u |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 206 | }; |
Chun-wei Fan | 167c327 | 2015-11-09 17:17:56 +0800 | [diff] [blame] | 207 | HB_MARK_AS_FLAG_T (hb_unicode_props_flags_t); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 208 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 209 | static inline void |
Behdad Esfahbod | 6986208 | 2015-11-04 18:46:22 -0800 | [diff] [blame] | 210 | _hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_buffer_t *buffer) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 211 | { |
Behdad Esfahbod | 6986208 | 2015-11-04 18:46:22 -0800 | [diff] [blame] | 212 | hb_unicode_funcs_t *unicode = buffer->unicode; |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 213 | unsigned int u = info->codepoint; |
Behdad Esfahbod | b710ea4 | 2018-10-03 21:17:59 +0200 | [diff] [blame] | 214 | unsigned int gen_cat = (unsigned int) unicode->general_category (u); |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 215 | unsigned int props = gen_cat; |
| 216 | |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 217 | if (u >= 0x80) |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 218 | { |
Behdad Esfahbod | e3e4bb0 | 2015-11-04 18:58:02 -0800 | [diff] [blame] | 219 | buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII; |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 220 | |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 221 | if (unlikely (unicode->is_default_ignorable (u))) |
| 222 | { |
Behdad Esfahbod | 6986208 | 2015-11-04 18:46:22 -0800 | [diff] [blame] | 223 | buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES; |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 224 | props |= UPROPS_MASK_IGNORABLE; |
Behdad Esfahbod | c36f3f5 | 2018-10-02 14:34:29 +0200 | [diff] [blame] | 225 | if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ; |
| 226 | else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ; |
Behdad Esfahbod | b203050 | 2016-04-26 16:41:17 -0700 | [diff] [blame] | 227 | /* Mongolian Free Variation Selectors need to be remembered |
| 228 | * because although we need to hide them like default-ignorables, |
| 229 | * they need to non-ignorable during shaping. This is similar to |
| 230 | * what we do for joiners in Indic-like shapers, but since the |
| 231 | * FVSes are GC=Mn, we have use a separate bit to remember them. |
| 232 | * Fixes: |
ebraminio | 7c6937e | 2017-11-20 14:49:22 -0500 | [diff] [blame] | 233 | * https://github.com/harfbuzz/harfbuzz/issues/234 */ |
Behdad Esfahbod | 81e2b9b | 2017-10-15 10:48:19 +0200 | [diff] [blame] | 234 | else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN; |
Khaled Hosny | 06cfe3f | 2017-05-17 21:32:47 +0300 | [diff] [blame] | 235 | /* TAG characters need similar treatment. Fixes: |
ebraminio | 7c6937e | 2017-11-20 14:49:22 -0500 | [diff] [blame] | 236 | * https://github.com/harfbuzz/harfbuzz/issues/463 */ |
Behdad Esfahbod | 81e2b9b | 2017-10-15 10:48:19 +0200 | [diff] [blame] | 237 | else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN; |
| 238 | /* COMBINING GRAPHEME JOINER should not be skipped; at least some times. |
ebraminio | 7c6937e | 2017-11-20 14:49:22 -0500 | [diff] [blame] | 239 | * https://github.com/harfbuzz/harfbuzz/issues/554 */ |
Behdad Esfahbod | 8c0d191 | 2018-01-05 12:46:12 +0000 | [diff] [blame] | 240 | else if (unlikely (u == 0x034Fu)) |
| 241 | { |
| 242 | buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_CGJ; |
| 243 | props |= UPROPS_MASK_HIDDEN; |
| 244 | } |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 245 | } |
Behdad Esfahbod | aae2847 | 2016-02-18 17:06:25 +0700 | [diff] [blame] | 246 | |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 247 | if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (gen_cat))) |
| 248 | { |
| 249 | props |= UPROPS_MASK_CONTINUATION; |
Behdad Esfahbod | 6ebbf51 | 2018-09-14 12:15:53 +0200 | [diff] [blame] | 250 | props |= unicode->modified_combining_class (u)<<8; |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 251 | } |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 252 | } |
Behdad Esfahbod | ed2024e | 2015-11-02 17:58:12 -0800 | [diff] [blame] | 253 | |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 254 | info->unicode_props() = props; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 255 | } |
| 256 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 257 | static inline void |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 258 | _hb_glyph_info_set_general_category (hb_glyph_info_t *info, |
| 259 | hb_unicode_general_category_t gen_cat) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 260 | { |
Behdad Esfahbod | cc5d3a3 | 2015-11-04 13:21:25 -0800 | [diff] [blame] | 261 | /* Clears top-byte. */ |
| 262 | info->unicode_props() = (unsigned int) gen_cat | (info->unicode_props() & (0xFF & ~UPROPS_MASK_GEN_CAT)); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 263 | } |
| 264 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 265 | static inline hb_unicode_general_category_t |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 266 | _hb_glyph_info_get_general_category (const hb_glyph_info_t *info) |
| 267 | { |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 268 | return (hb_unicode_general_category_t) (info->unicode_props() & UPROPS_MASK_GEN_CAT); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 269 | } |
| 270 | |
Behdad Esfahbod | 2f38dde | 2015-11-04 13:17:33 -0800 | [diff] [blame] | 271 | static inline bool |
| 272 | _hb_glyph_info_is_unicode_mark (const hb_glyph_info_t *info) |
| 273 | { |
| 274 | return HB_UNICODE_GENERAL_CATEGORY_IS_MARK (info->unicode_props() & UPROPS_MASK_GEN_CAT); |
| 275 | } |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 276 | static inline void |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 277 | _hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, |
| 278 | unsigned int modified_class) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 279 | { |
Behdad Esfahbod | 8249ec3 | 2015-11-04 13:26:17 -0800 | [diff] [blame] | 280 | if (unlikely (!_hb_glyph_info_is_unicode_mark (info))) |
| 281 | return; |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 282 | info->unicode_props() = (modified_class<<8) | (info->unicode_props() & 0xFF); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 283 | } |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 284 | static inline unsigned int |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 285 | _hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) |
| 286 | { |
Behdad Esfahbod | 8249ec3 | 2015-11-04 13:26:17 -0800 | [diff] [blame] | 287 | return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 288 | } |
Behdad Esfahbod | b6fe0ab | 2017-10-04 13:37:08 +0200 | [diff] [blame] | 289 | #define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info))) |
| 290 | |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 291 | static inline bool |
| 292 | _hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info) |
| 293 | { |
| 294 | return _hb_glyph_info_get_general_category (info) == |
| 295 | HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; |
| 296 | } |
| 297 | static inline void |
Behdad Esfahbod | 7793aad | 2015-11-04 14:48:46 -0800 | [diff] [blame] | 298 | _hb_glyph_info_set_unicode_space_fallback_type (hb_glyph_info_t *info, hb_unicode_funcs_t::space_t s) |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 299 | { |
| 300 | if (unlikely (!_hb_glyph_info_is_unicode_space (info))) |
| 301 | return; |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 302 | info->unicode_props() = (((unsigned int) s)<<8) | (info->unicode_props() & 0xFF); |
| 303 | } |
Behdad Esfahbod | 7793aad | 2015-11-04 14:48:46 -0800 | [diff] [blame] | 304 | static inline hb_unicode_funcs_t::space_t |
| 305 | _hb_glyph_info_get_unicode_space_fallback_type (const hb_glyph_info_t *info) |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 306 | { |
Behdad Esfahbod | 7793aad | 2015-11-04 14:48:46 -0800 | [diff] [blame] | 307 | return _hb_glyph_info_is_unicode_space (info) ? |
| 308 | (hb_unicode_funcs_t::space_t) (info->unicode_props()>>8) : |
| 309 | hb_unicode_funcs_t::NOT_SPACE; |
Behdad Esfahbod | 9ac4b96 | 2015-11-04 14:18:39 -0800 | [diff] [blame] | 310 | } |
| 311 | |
Behdad Esfahbod | 4ba796b | 2015-07-22 17:41:31 +0100 | [diff] [blame] | 312 | static inline bool _hb_glyph_info_ligated (const hb_glyph_info_t *info); |
| 313 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 314 | static inline hb_bool_t |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 315 | _hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) |
| 316 | { |
Behdad Esfahbod | b203050 | 2016-04-26 16:41:17 -0700 | [diff] [blame] | 317 | return (info->unicode_props() & UPROPS_MASK_IGNORABLE) && |
| 318 | !_hb_glyph_info_ligated (info); |
| 319 | } |
| 320 | static inline hb_bool_t |
Khaled Hosny | 06cfe3f | 2017-05-17 21:32:47 +0300 | [diff] [blame] | 321 | _hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info) |
Behdad Esfahbod | b203050 | 2016-04-26 16:41:17 -0700 | [diff] [blame] | 322 | { |
Khaled Hosny | 06cfe3f | 2017-05-17 21:32:47 +0300 | [diff] [blame] | 323 | return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN)) |
Behdad Esfahbod | b203050 | 2016-04-26 16:41:17 -0700 | [diff] [blame] | 324 | == UPROPS_MASK_IGNORABLE) && |
| 325 | !_hb_glyph_info_ligated (info); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 326 | } |
Behdad Esfahbod | 8c0d191 | 2018-01-05 12:46:12 +0000 | [diff] [blame] | 327 | static inline void |
| 328 | _hb_glyph_info_unhide (hb_glyph_info_t *info) |
| 329 | { |
| 330 | info->unicode_props() &= ~ UPROPS_MASK_HIDDEN; |
| 331 | } |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 332 | |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 333 | static inline void |
| 334 | _hb_glyph_info_set_continuation (hb_glyph_info_t *info) |
| 335 | { |
| 336 | info->unicode_props() |= UPROPS_MASK_CONTINUATION; |
| 337 | } |
Behdad Esfahbod | 6f39c22 | 2018-10-03 20:06:32 +0200 | [diff] [blame] | 338 | static inline void |
| 339 | _hb_glyph_info_reset_continuation (hb_glyph_info_t *info) |
| 340 | { |
| 341 | info->unicode_props() &= ~ UPROPS_MASK_CONTINUATION; |
| 342 | } |
Behdad Esfahbod | 3b78318 | 2018-10-03 19:44:15 +0200 | [diff] [blame] | 343 | static inline bool |
| 344 | _hb_glyph_info_is_continuation (const hb_glyph_info_t *info) |
| 345 | { |
| 346 | return info->unicode_props() & UPROPS_MASK_CONTINUATION; |
| 347 | } |
| 348 | /* Loop over grapheme. Based on foreach_cluster(). */ |
| 349 | #define foreach_grapheme(buffer, start, end) \ |
| 350 | for (unsigned int \ |
| 351 | _count = buffer->len, \ |
| 352 | start = 0, end = _count ? _hb_next_grapheme (buffer, 0) : 0; \ |
| 353 | start < _count; \ |
| 354 | start = end, end = _hb_next_grapheme (buffer, start)) |
| 355 | |
| 356 | static inline unsigned int |
| 357 | _hb_next_grapheme (hb_buffer_t *buffer, unsigned int start) |
| 358 | { |
| 359 | hb_glyph_info_t *info = buffer->info; |
| 360 | unsigned int count = buffer->len; |
| 361 | |
| 362 | while (++start < count && _hb_glyph_info_is_continuation (&info[start])) |
| 363 | ; |
| 364 | |
| 365 | return start; |
| 366 | } |
| 367 | |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 368 | static inline bool |
| 369 | _hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info) |
| 370 | { |
| 371 | return _hb_glyph_info_get_general_category (info) == |
| 372 | HB_UNICODE_GENERAL_CATEGORY_FORMAT; |
| 373 | } |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 374 | static inline hb_bool_t |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 375 | _hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) |
| 376 | { |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 377 | return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWNJ); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 378 | } |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 379 | static inline hb_bool_t |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 380 | _hb_glyph_info_is_zwj (const hb_glyph_info_t *info) |
| 381 | { |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 382 | return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWJ); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 383 | } |
Behdad Esfahbod | 815bdd7 | 2016-02-22 18:22:44 +0900 | [diff] [blame] | 384 | static inline hb_bool_t |
| 385 | _hb_glyph_info_is_joiner (const hb_glyph_info_t *info) |
| 386 | { |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 387 | return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & (UPROPS_MASK_Cf_ZWNJ|UPROPS_MASK_Cf_ZWJ)); |
Behdad Esfahbod | 815bdd7 | 2016-02-22 18:22:44 +0900 | [diff] [blame] | 388 | } |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 389 | static inline void |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 390 | _hb_glyph_info_flip_joiners (hb_glyph_info_t *info) |
| 391 | { |
Behdad Esfahbod | 21ab550 | 2016-04-26 16:02:04 -0700 | [diff] [blame] | 392 | if (!_hb_glyph_info_is_unicode_format (info)) |
| 393 | return; |
| 394 | info->unicode_props() ^= UPROPS_MASK_Cf_ZWNJ | UPROPS_MASK_Cf_ZWJ; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /* lig_props: aka lig_id / lig_comp |
| 398 | * |
| 399 | * When a ligature is formed: |
| 400 | * |
| 401 | * - The ligature glyph and any marks in between all the same newly allocated |
| 402 | * lig_id, |
| 403 | * - The ligature glyph will get lig_num_comps set to the number of components |
| 404 | * - The marks get lig_comp > 0, reflecting which component of the ligature |
| 405 | * they were applied to. |
| 406 | * - This is used in GPOS to attach marks to the right component of a ligature |
| 407 | * in MarkLigPos, |
| 408 | * - Note that when marks are ligated together, much of the above is skipped |
| 409 | * and the current lig_id reused. |
| 410 | * |
| 411 | * When a multiple-substitution is done: |
| 412 | * |
| 413 | * - All resulting glyphs will have lig_id = 0, |
| 414 | * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. |
| 415 | * - This is used in GPOS to attach marks to the first component of a |
| 416 | * multiple substitution in MarkBasePos. |
| 417 | * |
| 418 | * The numbers are also used in GPOS to do mark-to-mark positioning only |
| 419 | * to marks that belong to the same component of the same ligature. |
| 420 | */ |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 421 | |
| 422 | static inline void |
| 423 | _hb_glyph_info_clear_lig_props (hb_glyph_info_t *info) |
| 424 | { |
| 425 | info->lig_props() = 0; |
| 426 | } |
| 427 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 428 | #define IS_LIG_BASE 0x10 |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 429 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 430 | static inline void |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 431 | _hb_glyph_info_set_lig_props_for_ligature (hb_glyph_info_t *info, |
| 432 | unsigned int lig_id, |
| 433 | unsigned int lig_num_comps) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 434 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 435 | info->lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 436 | } |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 437 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 438 | static inline void |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 439 | _hb_glyph_info_set_lig_props_for_mark (hb_glyph_info_t *info, |
| 440 | unsigned int lig_id, |
| 441 | unsigned int lig_comp) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 442 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 443 | info->lig_props() = (lig_id << 5) | (lig_comp & 0x0F); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 444 | } |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 445 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 446 | static inline void |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 447 | _hb_glyph_info_set_lig_props_for_component (hb_glyph_info_t *info, unsigned int comp) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 448 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 449 | _hb_glyph_info_set_lig_props_for_mark (info, 0, comp); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | static inline unsigned int |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 453 | _hb_glyph_info_get_lig_id (const hb_glyph_info_t *info) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 454 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 455 | return info->lig_props() >> 5; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 456 | } |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 457 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 458 | static inline bool |
Behdad Esfahbod | a1f7b28 | 2013-10-18 01:09:08 +0200 | [diff] [blame] | 459 | _hb_glyph_info_ligated_internal (const hb_glyph_info_t *info) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 460 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 461 | return !!(info->lig_props() & IS_LIG_BASE); |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 462 | } |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 463 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 464 | static inline unsigned int |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 465 | _hb_glyph_info_get_lig_comp (const hb_glyph_info_t *info) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 466 | { |
Behdad Esfahbod | a1f7b28 | 2013-10-18 01:09:08 +0200 | [diff] [blame] | 467 | if (_hb_glyph_info_ligated_internal (info)) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 468 | return 0; |
| 469 | else |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 470 | return info->lig_props() & 0x0F; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 471 | } |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 472 | |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 473 | static inline unsigned int |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 474 | _hb_glyph_info_get_lig_num_comps (const hb_glyph_info_t *info) |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 475 | { |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 476 | if ((info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && |
Behdad Esfahbod | a1f7b28 | 2013-10-18 01:09:08 +0200 | [diff] [blame] | 477 | _hb_glyph_info_ligated_internal (info)) |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 478 | return info->lig_props() & 0x0F; |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 479 | else |
| 480 | return 1; |
| 481 | } |
| 482 | |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 483 | static inline uint8_t |
| 484 | _hb_allocate_lig_id (hb_buffer_t *buffer) { |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 485 | uint8_t lig_id = buffer->next_serial () & 0x07; |
| 486 | if (unlikely (!lig_id)) |
Behdad Esfahbod | 3ddf892 | 2013-10-18 00:02:43 +0200 | [diff] [blame] | 487 | lig_id = _hb_allocate_lig_id (buffer); /* in case of overflow */ |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 488 | return lig_id; |
| 489 | } |
| 490 | |
Behdad Esfahbod | 91689de | 2013-10-18 00:21:59 +0200 | [diff] [blame] | 491 | /* glyph_props: */ |
| 492 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 493 | static inline void |
Behdad Esfahbod | 91689de | 2013-10-18 00:21:59 +0200 | [diff] [blame] | 494 | _hb_glyph_info_set_glyph_props (hb_glyph_info_t *info, unsigned int props) |
| 495 | { |
| 496 | info->glyph_props() = props; |
| 497 | } |
| 498 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 499 | static inline unsigned int |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 500 | _hb_glyph_info_get_glyph_props (const hb_glyph_info_t *info) |
| 501 | { |
| 502 | return info->glyph_props(); |
| 503 | } |
Behdad Esfahbod | 91689de | 2013-10-18 00:21:59 +0200 | [diff] [blame] | 504 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 505 | static inline bool |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 506 | _hb_glyph_info_is_base_glyph (const hb_glyph_info_t *info) |
| 507 | { |
| 508 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); |
| 509 | } |
| 510 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 511 | static inline bool |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 512 | _hb_glyph_info_is_ligature (const hb_glyph_info_t *info) |
| 513 | { |
| 514 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE); |
| 515 | } |
| 516 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 517 | static inline bool |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 518 | _hb_glyph_info_is_mark (const hb_glyph_info_t *info) |
| 519 | { |
| 520 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK); |
| 521 | } |
| 522 | |
Behdad Esfahbod | a1f7b28 | 2013-10-18 01:09:08 +0200 | [diff] [blame] | 523 | static inline bool |
Behdad Esfahbod | 8570273 | 2013-10-18 01:11:05 +0200 | [diff] [blame] | 524 | _hb_glyph_info_substituted (const hb_glyph_info_t *info) |
| 525 | { |
| 526 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); |
| 527 | } |
| 528 | |
| 529 | static inline bool |
Behdad Esfahbod | a1f7b28 | 2013-10-18 01:09:08 +0200 | [diff] [blame] | 530 | _hb_glyph_info_ligated (const hb_glyph_info_t *info) |
| 531 | { |
| 532 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATED); |
| 533 | } |
| 534 | |
Behdad Esfahbod | 832a6f9 | 2014-06-04 16:57:42 -0400 | [diff] [blame] | 535 | static inline bool |
| 536 | _hb_glyph_info_multiplied (const hb_glyph_info_t *info) |
| 537 | { |
| 538 | return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); |
| 539 | } |
| 540 | |
| 541 | static inline bool |
| 542 | _hb_glyph_info_ligated_and_didnt_multiply (const hb_glyph_info_t *info) |
| 543 | { |
| 544 | return _hb_glyph_info_ligated (info) && !_hb_glyph_info_multiplied (info); |
| 545 | } |
| 546 | |
Behdad Esfahbod | 04dc52f | 2014-06-06 17:28:38 -0400 | [diff] [blame] | 547 | static inline void |
| 548 | _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info) |
| 549 | { |
| 550 | info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | |
| 551 | HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); |
| 552 | } |
| 553 | |
Behdad Esfahbod | 595936e | 2015-07-21 14:15:35 +0100 | [diff] [blame] | 554 | static inline void |
Behdad Esfahbod | 2ab0de9 | 2015-12-17 11:59:15 +0000 | [diff] [blame] | 555 | _hb_glyph_info_clear_substituted (hb_glyph_info_t *info) |
Behdad Esfahbod | 595936e | 2015-07-21 14:15:35 +0100 | [diff] [blame] | 556 | { |
Behdad Esfahbod | 2ab0de9 | 2015-12-17 11:59:15 +0000 | [diff] [blame] | 557 | info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); |
Behdad Esfahbod | 595936e | 2015-07-21 14:15:35 +0100 | [diff] [blame] | 558 | } |
| 559 | |
Behdad Esfahbod | 04dc52f | 2014-06-06 17:28:38 -0400 | [diff] [blame] | 560 | |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 561 | /* Allocation / deallocation. */ |
| 562 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 563 | static inline void |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 564 | _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer) |
| 565 | { |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 566 | HB_BUFFER_ALLOCATE_VAR (buffer, unicode_props); |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 567 | } |
| 568 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 569 | static inline void |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 570 | _hb_buffer_deallocate_unicode_vars (hb_buffer_t *buffer) |
| 571 | { |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 572 | HB_BUFFER_DEALLOCATE_VAR (buffer, unicode_props); |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 573 | } |
| 574 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 575 | static inline void |
Behdad Esfahbod | 8f3eebf | 2014-08-02 17:18:46 -0400 | [diff] [blame] | 576 | _hb_buffer_assert_unicode_vars (hb_buffer_t *buffer) |
| 577 | { |
Behdad Esfahbod | 9382c47 | 2015-11-02 17:36:51 -0800 | [diff] [blame] | 578 | HB_BUFFER_ASSERT_VAR (buffer, unicode_props); |
Behdad Esfahbod | 8f3eebf | 2014-08-02 17:18:46 -0400 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static inline void |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 582 | _hb_buffer_allocate_gsubgpos_vars (hb_buffer_t *buffer) |
| 583 | { |
| 584 | HB_BUFFER_ALLOCATE_VAR (buffer, glyph_props); |
| 585 | HB_BUFFER_ALLOCATE_VAR (buffer, lig_props); |
| 586 | HB_BUFFER_ALLOCATE_VAR (buffer, syllable); |
| 587 | } |
| 588 | |
Behdad Esfahbod | 6faff8e | 2014-04-28 14:29:39 -0700 | [diff] [blame] | 589 | static inline void |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 590 | _hb_buffer_deallocate_gsubgpos_vars (hb_buffer_t *buffer) |
| 591 | { |
| 592 | HB_BUFFER_DEALLOCATE_VAR (buffer, syllable); |
| 593 | HB_BUFFER_DEALLOCATE_VAR (buffer, lig_props); |
| 594 | HB_BUFFER_DEALLOCATE_VAR (buffer, glyph_props); |
| 595 | } |
| 596 | |
Behdad Esfahbod | 8f3eebf | 2014-08-02 17:18:46 -0400 | [diff] [blame] | 597 | static inline void |
| 598 | _hb_buffer_assert_gsubgpos_vars (hb_buffer_t *buffer) |
| 599 | { |
| 600 | HB_BUFFER_ASSERT_VAR (buffer, glyph_props); |
| 601 | HB_BUFFER_ASSERT_VAR (buffer, lig_props); |
| 602 | HB_BUFFER_ASSERT_VAR (buffer, syllable); |
| 603 | } |
| 604 | |
Behdad Esfahbod | 101303d | 2013-10-18 00:42:39 +0200 | [diff] [blame] | 605 | /* Make sure no one directly touches our props... */ |
| 606 | #undef unicode_props0 |
| 607 | #undef unicode_props1 |
| 608 | #undef lig_props |
| 609 | #undef glyph_props |
Behdad Esfahbod | 2e96d2c | 2013-10-17 21:16:20 +0200 | [diff] [blame] | 610 | |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 611 | #endif /* HB_OT_LAYOUT_HH */ |