Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 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 | |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 33 | struct hb_aat_map_t |
| 34 | { |
| 35 | friend struct hb_aat_map_builder_t; |
| 36 | |
| 37 | public: |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 38 | struct range_flags_t |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 39 | { |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 40 | hb_mask_t flags; |
| 41 | unsigned cluster_first; |
| 42 | unsigned cluster_last; // end - 1 |
| 43 | }; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 44 | |
| 45 | public: |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 46 | hb_vector_t<hb_sorted_vector_t<range_flags_t>> chain_flags; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | struct hb_aat_map_builder_t |
| 50 | { |
| 51 | public: |
| 52 | |
| 53 | HB_INTERNAL hb_aat_map_builder_t (hb_face_t *face_, |
Behdad Esfahbod | d57ce30 | 2022-07-17 21:56:56 -0600 | [diff] [blame] | 54 | const hb_segment_properties_t props_) : |
Behdad Esfahbod | 2124ad8 | 2022-07-17 21:32:27 -0600 | [diff] [blame] | 55 | face (face_), |
Behdad Esfahbod | d57ce30 | 2022-07-17 21:56:56 -0600 | [diff] [blame] | 56 | props (props_) {} |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 57 | |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 58 | HB_INTERNAL void add_feature (const hb_feature_t &feature); |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 59 | |
Behdad Esfahbod | 622a686 | 2023-01-09 18:14:40 -0700 | [diff] [blame] | 60 | HB_INTERNAL void compile (hb_aat_map_t &m); |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 61 | |
| 62 | public: |
| 63 | struct feature_info_t |
| 64 | { |
Ebrahim Byagowi | 7a0471a | 2018-11-01 21:38:54 +0330 | [diff] [blame] | 65 | hb_aat_layout_feature_type_t type; |
Ebrahim Byagowi | 54f4c17 | 2018-11-23 12:05:06 +0330 | [diff] [blame] | 66 | hb_aat_layout_feature_selector_t setting; |
Jonathan Kew | 573b6bf | 2020-03-30 23:20:30 +0100 | [diff] [blame] | 67 | bool is_exclusive; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 68 | unsigned seq; /* For stable sorting only. */ |
| 69 | |
Behdad Esfahbod | 95df00a | 2019-04-12 17:50:03 -0400 | [diff] [blame] | 70 | HB_INTERNAL static int cmp (const void *pa, const void *pb) |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 71 | { |
| 72 | const feature_info_t *a = (const feature_info_t *) pa; |
| 73 | const feature_info_t *b = (const feature_info_t *) pb; |
Jonathan Kew | 573b6bf | 2020-03-30 23:20:30 +0100 | [diff] [blame] | 74 | if (a->type != b->type) return (a->type < b->type ? -1 : 1); |
| 75 | if (!a->is_exclusive && |
Ebrahim Byagowi | 2dda6dd | 2020-04-20 14:12:45 +0430 | [diff] [blame] | 76 | (a->setting & ~1) != (b->setting & ~1)) return (a->setting < b->setting ? -1 : 1); |
Jonathan Kew | 573b6bf | 2020-03-30 23:20:30 +0100 | [diff] [blame] | 77 | return (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 78 | } |
| 79 | |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 80 | /* compares type & setting only */ |
Jonathan Kew | 573b6bf | 2020-03-30 23:20:30 +0100 | [diff] [blame] | 81 | int cmp (const feature_info_t& f) const |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 82 | { |
Jonathan Kew | 573b6bf | 2020-03-30 23:20:30 +0100 | [diff] [blame] | 83 | return (f.type != type) ? (f.type < type ? -1 : 1) : |
Ebrahim Byagowi | 2dda6dd | 2020-04-20 14:12:45 +0430 | [diff] [blame] | 84 | (f.setting != setting) ? (f.setting < setting ? -1 : 1) : 0; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 85 | } |
| 86 | }; |
| 87 | |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 88 | struct feature_range_t |
| 89 | { |
| 90 | feature_info_t info; |
| 91 | unsigned start; |
| 92 | unsigned end; |
| 93 | }; |
| 94 | |
| 95 | private: |
| 96 | struct feature_event_t |
| 97 | { |
| 98 | unsigned int index; |
| 99 | bool start; |
| 100 | feature_info_t feature; |
| 101 | |
| 102 | HB_INTERNAL static int cmp (const void *pa, const void *pb) { |
| 103 | const feature_event_t *a = (const feature_event_t *) pa; |
| 104 | const feature_event_t *b = (const feature_event_t *) pb; |
| 105 | return a->index < b->index ? -1 : a->index > b->index ? 1 : |
| 106 | a->start < b->start ? -1 : a->start > b->start ? 1 : |
| 107 | feature_info_t::cmp (&a->feature, &b->feature); |
| 108 | } |
| 109 | }; |
| 110 | |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 111 | public: |
| 112 | hb_face_t *face; |
Behdad Esfahbod | 2124ad8 | 2022-07-17 21:32:27 -0600 | [diff] [blame] | 113 | hb_segment_properties_t props; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 114 | |
| 115 | public: |
Behdad Esfahbod | db4c874 | 2023-01-09 21:32:15 -0700 | [diff] [blame] | 116 | hb_sorted_vector_t<feature_range_t> features; |
| 117 | hb_sorted_vector_t<feature_info_t> current_features; |
Behdad Esfahbod | 8c83de1 | 2023-01-12 10:44:08 -0700 | [diff] [blame] | 118 | unsigned range_first = HB_FEATURE_GLOBAL_START; |
| 119 | unsigned range_last = HB_FEATURE_GLOBAL_END; |
Behdad Esfahbod | f33ad6d | 2018-10-23 14:31:51 -0700 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | |
| 123 | #endif /* HB_AAT_MAP_HH */ |