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): Garret Rieger, Roderick Sheeter 25 */ 26 27 #ifndef HB_SUBSET_INPUT_HH 28 #define HB_SUBSET_INPUT_HH 29 30 31 #include "hb.hh" 32 33 #include "hb-subset.h" 34 #include "hb-map.hh" 35 #include "hb-set.hh" 36 #include "hb-cplusplus.hh" 37 #include "hb-font.hh" 38 #include "hb-subset-instancer-solver.hh" 39 40 struct hb_ot_name_record_ids_t 41 { 42 hb_ot_name_record_ids_t () = default; hb_ot_name_record_ids_thb_ot_name_record_ids_t43 hb_ot_name_record_ids_t (unsigned platform_id_, 44 unsigned encoding_id_, 45 unsigned language_id_, 46 unsigned name_id_) 47 :platform_id (platform_id_), 48 encoding_id (encoding_id_), 49 language_id (language_id_), 50 name_id (name_id_) {} 51 operator !=hb_ot_name_record_ids_t52 bool operator != (const hb_ot_name_record_ids_t o) const 53 { return !(*this == o); } 54 operator ==hb_ot_name_record_ids_t55 inline bool operator == (const hb_ot_name_record_ids_t& o) const 56 { 57 return platform_id == o.platform_id && 58 encoding_id == o.encoding_id && 59 language_id == o.language_id && 60 name_id == o.name_id; 61 } 62 hashhb_ot_name_record_ids_t63 inline uint32_t hash () const 64 { 65 uint32_t current = 0; 66 current = current * 31 + hb_hash (platform_id); 67 current = current * 31 + hb_hash (encoding_id); 68 current = current * 31 + hb_hash (language_id); 69 current = current * 31 + hb_hash (name_id); 70 return current; 71 } 72 73 unsigned platform_id; 74 unsigned encoding_id; 75 unsigned language_id; 76 unsigned name_id; 77 }; 78 79 typedef struct hb_ot_name_record_ids_t hb_ot_name_record_ids_t; 80 81 82 HB_MARK_AS_FLAG_T (hb_subset_flags_t); 83 84 struct hb_subset_input_t 85 { 86 HB_INTERNAL hb_subset_input_t (); 87 ~hb_subset_input_thb_subset_input_t88 ~hb_subset_input_t () 89 { 90 sets.~sets_t (); 91 92 #ifdef HB_EXPERIMENTAL_API 93 for (auto _ : name_table_overrides.values ()) 94 _.fini (); 95 #endif 96 } 97 98 hb_object_header_t header; 99 100 struct sets_t { 101 hb::shared_ptr<hb_set_t> glyphs; 102 hb::shared_ptr<hb_set_t> unicodes; 103 hb::shared_ptr<hb_set_t> no_subset_tables; 104 hb::shared_ptr<hb_set_t> drop_tables; 105 hb::shared_ptr<hb_set_t> name_ids; 106 hb::shared_ptr<hb_set_t> name_languages; 107 hb::shared_ptr<hb_set_t> layout_features; 108 hb::shared_ptr<hb_set_t> layout_scripts; 109 }; 110 111 union { 112 sets_t sets; 113 hb::shared_ptr<hb_set_t> set_ptrs[sizeof (sets_t) / sizeof (hb_set_t*)]; 114 }; 115 116 unsigned flags; 117 bool attach_accelerator_data = false; 118 119 // If set loca format will always be the long version. 120 bool force_long_loca = false; 121 122 hb_hashmap_t<hb_tag_t, Triple> axes_location; 123 hb_map_t glyph_map; 124 #ifdef HB_EXPERIMENTAL_API 125 hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> name_table_overrides; 126 #endif 127 num_setshb_subset_input_t128 inline unsigned num_sets () const 129 { 130 return sizeof (set_ptrs) / sizeof (hb_set_t*); 131 } 132 sets_iterhb_subset_input_t133 inline hb_array_t<hb::shared_ptr<hb_set_t>> sets_iter () 134 { 135 return hb_array (set_ptrs); 136 } 137 in_errorhb_subset_input_t138 bool in_error () const 139 { 140 for (unsigned i = 0; i < num_sets (); i++) 141 { 142 if (unlikely (set_ptrs[i]->in_error ())) 143 return true; 144 } 145 146 return axes_location.in_error () 147 #ifdef HB_EXPERIMENTAL_API 148 || name_table_overrides.in_error () 149 #endif 150 ; 151 } 152 }; 153 154 155 #endif /* HB_SUBSET_INPUT_HH */ 156