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 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, 1> 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_ HB_UNUSED) : 56 face (face_) {} 57 58 HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value=1); 59 60 HB_INTERNAL void compile (hb_aat_map_t &m); 61 62 public: 63 struct feature_info_t 64 { 65 hb_aat_layout_feature_type_t type; 66 hb_aat_layout_feature_selector_t setting; 67 unsigned seq; /* For stable sorting only. */ 68 69 static int cmp (const void *pa, const void *pb) 70 { 71 const feature_info_t *a = (const feature_info_t *) pa; 72 const feature_info_t *b = (const feature_info_t *) pb; 73 return (a->type != b->type) ? (a->type < b->type ? -1 : 1) : 74 (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); 75 } 76 77 int cmp (unsigned int ty) const 78 { 79 return (type != ty) ? (type < ty ? -1 : 1) : 0; 80 } 81 }; 82 83 public: 84 hb_face_t *face; 85 86 public: 87 hb_vector_t<feature_info_t, 32> features; 88 }; 89 90 91 #endif /* HB_AAT_MAP_HH */ 92
