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 37 #include "hb-font.hh" 38 39 struct hb_ot_name_record_ids_t 40 { 41 hb_ot_name_record_ids_t () = default; hb_ot_name_record_ids_thb_ot_name_record_ids_t42 hb_ot_name_record_ids_t (unsigned platform_id_, 43 unsigned encoding_id_, 44 unsigned language_id_, 45 unsigned name_id_) 46 :platform_id (platform_id_), 47 encoding_id (encoding_id_), 48 language_id (language_id_), 49 name_id (name_id_) {} 50 operator !=hb_ot_name_record_ids_t51 bool operator != (const hb_ot_name_record_ids_t o) const 52 { return !(*this == o); } 53 operator ==hb_ot_name_record_ids_t54 inline bool operator == (const hb_ot_name_record_ids_t& o) const 55 { 56 return platform_id == o.platform_id && 57 encoding_id == o.encoding_id && 58 language_id == o.language_id && 59 name_id == o.name_id; 60 } 61 hashhb_ot_name_record_ids_t62 inline uint32_t hash () const 63 { 64 uint32_t current = 0; 65 current = current * 31 + hb_hash (platform_id); 66 current = current * 31 + hb_hash (encoding_id); 67 current = current * 31 + hb_hash (language_id); 68 current = current * 31 + hb_hash (name_id); 69 return current; 70 } 71 72 unsigned platform_id; 73 unsigned encoding_id; 74 unsigned language_id; 75 unsigned name_id; 76 }; 77 78 typedef struct hb_ot_name_record_ids_t hb_ot_name_record_ids_t; 79 80 81 HB_MARK_AS_FLAG_T (hb_subset_flags_t); 82 83 struct hb_subset_input_t 84 { 85 hb_object_header_t header; 86 87 struct sets_t { 88 hb_set_t *glyphs; 89 hb_set_t *unicodes; 90 hb_set_t *no_subset_tables; 91 hb_set_t *drop_tables; 92 hb_set_t *name_ids; 93 hb_set_t *name_languages; 94 hb_set_t *layout_features; 95 hb_set_t *layout_scripts; 96 }; 97 98 union { 99 sets_t sets; 100 hb_set_t* set_ptrs[sizeof (sets_t) / sizeof (hb_set_t*)]; 101 }; 102 103 unsigned flags; 104 bool attach_accelerator_data = false; 105 106 // If set loca format will always be the long version. 107 bool force_long_loca = false; 108 109 hb_hashmap_t<hb_tag_t, float> *axes_location; 110 #ifdef HB_EXPERIMENTAL_API 111 hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> *name_table_overrides; 112 #endif 113 num_setshb_subset_input_t114 inline unsigned num_sets () const 115 { 116 return sizeof (set_ptrs) / sizeof (hb_set_t*); 117 } 118 sets_iterhb_subset_input_t119 inline hb_array_t<hb_set_t*> sets_iter () 120 { 121 return hb_array_t<hb_set_t*> (set_ptrs, num_sets ()); 122 } 123 in_errorhb_subset_input_t124 bool in_error () const 125 { 126 for (unsigned i = 0; i < num_sets (); i++) 127 { 128 if (unlikely (set_ptrs[i]->in_error ())) 129 return true; 130 } 131 132 return axes_location->in_error () 133 #ifdef HB_EXPERIMENTAL_API 134 || name_table_overrides->in_error () 135 #endif 136 ; 137 } 138 }; 139 140 141 #endif /* HB_SUBSET_INPUT_HH */ 142