hb-ot-shape.cc revision 7e4920fd1577987bf6804f67765e22a84983e057
12014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod/* 22409d5f8d7dd8b535ce5ea29e933f7db27d33793Behdad Esfahbod * Copyright © 2009,2010 Red Hat, Inc. 3359dcaa0d33271025ca42a5f54ecbac7ae3b56d3Behdad Esfahbod * Copyright © 2010,2011 Google, Inc. 42014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 5c755cb3e3ac55156d0d2ec05adea7a650b97cc41Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 62014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 72014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * Permission is hereby granted, without written agreement and without 82014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 92014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * software and its documentation for any purpose, provided that the 102014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 112014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * all copies of this software. 122014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 132014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 142014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 152014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 162014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 172014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * DAMAGE. 182014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 192014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 202014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 212014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 222014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 232014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 242014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * 252014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod * Red Hat Author(s): Behdad Esfahbod 26476c94218b4f5b8e119e82b0e10b641e0c10bf56Behdad Esfahbod * Google Author(s): Behdad Esfahbod 272014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod */ 282014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 29027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#define HB_SHAPER ot 30027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#define hb_ot_shaper_face_data_t hb_ot_layout_t 31e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod#define hb_ot_shaper_shape_plan_data_t hb_ot_shape_plan_t 32027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod#include "hb-shaper-impl-private.hh" 33027857d0412477fb4427dcb8a8c45287c272e143Behdad Esfahbod 344924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#include "hb-ot-shape-private.hh" 35b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod#include "hb-ot-shape-normalize-private.hh" 3616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod#include "hb-ot-shape-complex-private.hh" 372014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 38b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod#include "hb-ot-layout-private.hh" 391827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod#include "hb-set-private.hh" 4072657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod 41acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 42f6fd3780e12b23ff7ed3743497c8996e71dcb064Behdad Esfahbodhb_tag_t common_features[] = { 432014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 44a5f1834f57ea3fb254f5c7d372747de316fcc8f1Behdad Esfahbod HB_TAG('l','i','g','a'), 4589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 4689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 4989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 51d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 5289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t horizontal_features[] = { 5389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 542014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 55bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 562014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 57f4e48adcdd4315ce09e755f87a0f801d88194f42Behdad Esfahbod HB_TAG('r','c','l','t'), 5889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod/* Note: 6189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * Technically speaking, vrt2 and vert are mutually exclusive. 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * According to the spec, valt and vpal are also mutually exclusive. 6389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * But we apply them all for now. 6489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod */ 6589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t vertical_features[] = { 6689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','a','l','t'), 6789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 6889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','k','r','n'), 6989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','p','a','l'), 7089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','r','t','2'), 712014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 722014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 73b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 74b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 752014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 7690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 7749baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 7890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 7990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 802014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 818bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod hb_ot_map_builder_t *map = &planner->map; 828bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod 83895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 840e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 858bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_bool_feature (HB_TAG ('l','t','r','a')); 868bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_bool_feature (HB_TAG ('l','t','r','m')); 870e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 880e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 898bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_bool_feature (HB_TAG ('r','t','l','a')); 908bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_bool_feature (HB_TAG ('r','t','l','m'), false); 910e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 920e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_TTB: 930e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_BTT: 943286fc0e9adc3f2874c9409e7fdb09e4d2b7dda1Behdad Esfahbod case HB_DIRECTION_INVALID: 950e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod default: 960e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 970e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod } 980e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod 9989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#define ADD_FEATURES(array) \ 10089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_STMT_START { \ 10189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (array); i++) \ 1028bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_bool_feature (array[i]); \ 10389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod } HB_STMT_END 10489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 105693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->collect_features) 10616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod planner->shaper->collect_features (planner); 107e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 10889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (common_features); 10989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 11089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 11189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (horizontal_features); 11289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 11389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (vertical_features); 11489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 115693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->override_features) 11616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod planner->shaper->override_features (planner); 117d96838ef951ce6170eb2dc576ebcba2262cf7008Behdad Esfahbod 11889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#undef ADD_FEATURES 11989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 120895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 121895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 1228bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod map->add_feature (feature->tag, feature->value, (feature->start == 0 && feature->end == (unsigned int) -1)); 123e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 124e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 125e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 126e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 127e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 128e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper face data 129e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 130e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 131e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_face_data_t * 132e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_create (hb_face_t *face) 133e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 134e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return _hb_ot_layout_create (face); 135e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 136e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 137e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 138e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data) 139e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 140e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod _hb_ot_layout_destroy (data); 141e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 142e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 143e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 144e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 145e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper font data 146e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 147e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 148e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodstruct hb_ot_shaper_font_data_t {}; 149e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 150e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_font_data_t * 151e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_create (hb_font_t *font) 152e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 153e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return (hb_ot_shaper_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; 154e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 155e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 156e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 157e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_destroy (hb_ot_shaper_font_data_t *data) 158e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 159e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 160e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 161e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 162e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 163e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper shape_plan data 164e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 165e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 166e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_shape_plan_data_t * 167e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan, 168e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod const hb_feature_t *user_features, 169e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod unsigned int num_user_features) 170e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 171a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod hb_ot_shape_plan_t *plan = (hb_ot_shape_plan_t *) calloc (1, sizeof (hb_ot_shape_plan_t)); 172a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (unlikely (!plan)) 173e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return NULL; 174e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 1755393e3a62ba09fd7bcf3767b36225c8f49badb9dBehdad Esfahbod hb_ot_shape_planner_t planner (shape_plan); 176e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 177e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (&shape_plan->props); 178e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 179e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_collect_features (&planner, &shape_plan->props, user_features, num_user_features); 180e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 181a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod planner.compile (*plan); 182e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 183a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (plan->shaper->data_create) { 184a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->data = plan->shaper->data_create (plan); 185a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (unlikely (!plan->data)) 186a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod return NULL; 187a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod } 188a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 189a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod return plan; 190e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 191e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 192e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 193a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod_hb_ot_shaper_shape_plan_data_destroy (hb_ot_shaper_shape_plan_data_t *plan) 194e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 195a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (plan->shaper->data_destroy) 196a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->shaper->data_destroy (const_cast<void *> (plan->data)); 197a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 198a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->finish (); 1994ba647eecf0f70917ac4229af1f2dd3c62fcb7d5Behdad Esfahbod 200a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod free (plan); 201e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 202e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 203e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 204e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 205e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper 206e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 207e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 208b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_context_t 209b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 210e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod /* Input to hb_ot_shape_internal() */ 211b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_plan_t *plan; 212b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_font_t *font; 213b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_face_t *face; 214b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_buffer_t *buffer; 215b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_feature_t *user_features; 216b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod unsigned int num_user_features; 217b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 218b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod /* Transient stuff */ 219b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_direction_t target_direction; 220b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_bool_t applied_position_complex; 221b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 222b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 223e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbodstatic void 22452601275d5e4000dada4f925fb78723eeeee7bd4Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 225e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod{ 2268bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod hb_ot_map_t *map = &c->plan->map; 2278bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod 2288bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod hb_mask_t global_mask = map->get_global_mask (); 22957ac0ecb7843533b2e6e6d6c8a12b2a44437cc1cBehdad Esfahbod c->buffer->reset_masks (global_mask); 2305b88908f12ad1d828dd6075fb8fc0036c2d6af3aBehdad Esfahbod 231693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (c->plan->shaper->setup_masks) 23216c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod c->plan->shaper->setup_masks (c->plan, c->buffer, c->font); 2332989be4919242670c94825bded96db20a7b2035bBehdad Esfahbod 234d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 235efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod { 236d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 2374924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 2384924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod unsigned int shift; 2398bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod hb_mask_t mask = map->get_mask (feature->tag, &shift); 240bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 2414924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 242efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod } 2432014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 2442014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 2452014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 246ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 247ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 248ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 249ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 250b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstatic void 251b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodhb_set_unicode_props (hb_buffer_t *buffer) 2523a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 253aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 2540e3361464b00b76aa7375515163e0710a691db0cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 255d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod _hb_glyph_info_set_unicode_props (&buffer->info[i], buffer->unicode); 2563a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 2573a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 2583a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 259aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_form_clusters (hb_buffer_t *buffer) 260ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 261aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 262ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) 263d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod if (FLAG (_hb_glyph_info_get_general_category (&buffer->info[i])) & 2644a68684654e645882095c1189477146287ce9437Behdad Esfahbod (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | 2654a68684654e645882095c1189477146287ce9437Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | 266d63adfc7d09b26764d9166da97372b21257e7611Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK))) 267330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod buffer->merge_clusters (i - 1, i + 1); 268ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 269ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 270967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 271aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_ensure_native_direction (hb_buffer_t *buffer) 272ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 273aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_direction_t direction = buffer->props.direction; 274ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2757403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 2767403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 2777403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2787403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 279aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (buffer->props.script)) || 2807403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 281ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 282aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_buffer_reverse_clusters (buffer); 283aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod buffer->props.direction = HB_DIRECTION_REVERSE (buffer->props.direction); 284ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 285ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 286ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 287ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 288ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 289ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 290ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 291aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbodhb_mirror_chars (hb_ot_shape_context_t *c) 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 293fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 294ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 295bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 296ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 297ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 29839dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 2994e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 300aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 301ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 302208f70f0553d73d2908b21b9552298029482a8b9Behdad Esfahbod hb_codepoint_t codepoint = unicode->mirroring (c->buffer->info[i].codepoint); 303aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 3047e4920fd1577987bf6804f67765e22a84983e057Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; /* TODO this should be moved to before setting user-feature masks */ 3051094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 306aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 307ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 308ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 309ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 310ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 311ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodhb_map_glyphs (hb_font_t *font, 312ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod hb_buffer_t *buffer) 313ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 3145d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod hb_codepoint_t glyph; 3155d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 316ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod if (unlikely (!buffer->len)) 317ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 318ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 319a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->clear_output (); 3205d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 321ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod unsigned int count = buffer->len - 1; 322468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod for (buffer->idx = 0; buffer->idx < count;) { 323208f70f0553d73d2908b21b9552298029482a8b9Behdad Esfahbod if (unlikely (buffer->unicode->is_variation_selector (buffer->cur(+1).codepoint))) { 3248fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod font->get_glyph (buffer->cur().codepoint, buffer->cur(+1).codepoint, &glyph); 325a4385f0b0a6949e2ce49e6a147ad4beaa724f6c3Behdad Esfahbod buffer->replace_glyphs (2, 1, &glyph); 326ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } else { 3278fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod font->get_glyph (buffer->cur().codepoint, 0, &glyph); 3280fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 329ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 330ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 331468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod if (likely (buffer->idx < buffer->len)) { 3328fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod font->get_glyph (buffer->cur().codepoint, 0, &glyph); 3330fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 3340fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod } 335468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod buffer->swap_buffers (); 336ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 337ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 338ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 339967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_default (hb_ot_shape_context_t *c) 340ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 341b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_mirror_chars (c); 342b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 34372657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_map_glyphs (c->font, c->buffer); 344ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 345ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 346ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 3475fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbodhb_synthesize_glyph_classes (hb_ot_shape_context_t *c) 3485fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod{ 3495fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod unsigned int count = c->buffer->len; 3505fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 35171baea0062da4d7f143d62da38492a0813814e49Behdad Esfahbod c->buffer->info[i].glyph_props() = _hb_glyph_info_get_general_category (&c->buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK ? 3525fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod HB_OT_LAYOUT_GLYPH_CLASS_MARK : 3535fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH; 3545fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod} 3555fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3565fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3575fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbodstatic void 358c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 359c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 360afbcc24be01a64bdb5c05c63880269145fa1d3c8Behdad Esfahbod hb_ot_layout_substitute_start (c->font, c->buffer); 36105bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod 3625fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod if (!hb_ot_layout_has_glyph_classes (c->face)) 3635fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod hb_synthesize_glyph_classes (c); 3645fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 3655fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod if (hb_ot_layout_has_substitution (c->face)) 3668bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod c->plan->substitute (c->font, c->buffer); 367c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 368afbcc24be01a64bdb5c05c63880269145fa1d3c8Behdad Esfahbod hb_ot_layout_substitute_finish (c->font, c->buffer); 369c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 370c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 371c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 372c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 373ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 374ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 375ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 376ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 377967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_default (hb_ot_shape_context_t *c) 378ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 37905bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod hb_ot_layout_position_start (c->font, c->buffer); 380ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 381967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 382ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 3838fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->get_glyph_advance_for_direction (c->buffer->info[i].codepoint, 3848fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->buffer->props.direction, 3858fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_advance, 3868fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_advance); 3878fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint, 3888fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->buffer->props.direction, 3898fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 3908fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 391ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 392ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 393ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 394ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 3952bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbodhb_zero_mark_advances (hb_ot_shape_context_t *c) 3962bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod{ 3972bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod unsigned int count = c->buffer->len; 3982bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 39971baea0062da4d7f143d62da38492a0813814e49Behdad Esfahbod if (_hb_glyph_info_get_general_category (&c->buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) 4002bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod { 4012bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod c->buffer->pos[i].x_advance = 0; 4022bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod c->buffer->pos[i].y_advance = 0; 4032bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod } 4042bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod} 4052bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 4062bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbodstatic void 407c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 408c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 409c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 410b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod if (hb_ot_layout_has_positioning (c->face)) 411b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod { 412b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod /* Change glyph origin to what GPOS expects, apply GPOS, change it back. */ 413b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 414b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod unsigned int count = c->buffer->len; 415b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 4168fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->add_glyph_origin_for_direction (c->buffer->info[i].codepoint, 4178fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod HB_DIRECTION_LTR, 4188fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 4198fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 420b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 421c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 4228bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod c->plan->position (c->font, c->buffer); 423c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 424b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 4258fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint, 4268fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod HB_DIRECTION_LTR, 4278fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 4288fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 429b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 4302118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod 4310594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod c->applied_position_complex = true; 4321e7d860613032e40a3f90e2caa2ee5ac44ab8c8cBehdad Esfahbod } else 4332bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod hb_zero_mark_advances (c); 4342bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 4351e7d860613032e40a3f90e2caa2ee5ac44ab8c8cBehdad Esfahbod hb_ot_layout_position_finish (c->font, c->buffer, c->plan->shaper->zero_width_attached_marks); 436c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 437c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 438c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 439c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 440c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodstatic void 441967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 442ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 443ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Mark pos */ 444ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 445ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 446ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 447967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_truetype_kern (hb_ot_shape_context_t *c) 448ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 449ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Check for kern=0 */ 450967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 451ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 452a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod hb_position_t x_kern, y_kern, kern1, kern2; 4538fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->get_glyph_kerning_for_direction (c->buffer->info[i - 1].codepoint, c->buffer->info[i].codepoint, 4548fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->buffer->props.direction, 4558fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &x_kern, &y_kern); 456a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 457a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = x_kern >> 1; 458a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = x_kern - kern1; 459967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i - 1].x_advance += kern1; 460967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_advance += kern2; 461967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_offset += kern2; 462a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 463a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = y_kern >> 1; 464a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = y_kern - kern1; 465a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i - 1].y_advance += kern1; 466a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_advance += kern2; 467a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_offset += kern2; 468ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 469ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 470ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 471ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 472967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback_visual (hb_ot_shape_context_t *c) 473ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 474967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_truetype_kern (c); 475ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 476ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 477d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbodstatic void 478d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbodhb_hide_zerowidth (hb_ot_shape_context_t *c) 479d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod{ 480d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_codepoint_t space; 4818fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod if (!c->font->get_glyph (' ', 0, &space)) 482d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod return; /* No point! */ 483d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 484d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod unsigned int count = c->buffer->len; 485d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 486b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod if (unlikely (!is_a_ligature (c->buffer->info[i]) && 487b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod _hb_glyph_info_is_zero_width (&c->buffer->info[i]))) { 488d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->info[i].codepoint = space; 489d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->pos[i].x_advance = 0; 490d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod c->buffer->pos[i].y_advance = 0; 491d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod } 492d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod} 493d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 494ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 495ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Do it! */ 496ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 497967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 498e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shape_internal (hb_ot_shape_context_t *c) 499ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 500b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->buffer->deallocate_var_all (); 501b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 502d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 503bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 504d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 505d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props0); 506d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props1); 507b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 508330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod c->buffer->clear_output (); 509330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod 510d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_set_unicode_props (c->buffer); 511fc96596b7c1c4e62491e951a3c256fb00dcde550Behdad Esfahbod 5124ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod hb_form_clusters (c->buffer); 5134ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod 514aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_ensure_native_direction (c->buffer); 51554d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod 5167e34601dededd521bcef15111e39293df3d0d13dBehdad Esfahbod _hb_ot_shape_normalize (c->font, c->buffer, 517693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod c->plan->shaper->normalization_preference ? 51816c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod c->plan->shaper->normalization_preference (c->plan) : 519693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT); 520655586fe5e1fadf2a2ef7826e61ee9a445ffa37aBehdad Esfahbod 521b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_ot_shape_setup_masks (c); 52298370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 5231094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* SUBSTITUTE */ 524fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 525967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_default (c); 526bbc7a99d01298f9be1ebaaceacbc9bc961e247e5Behdad Esfahbod 52736925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_substitute_complex (c); 528fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 5291094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod 5301094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* POSITION */ 531fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 532967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_default (c); 533ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 53436925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_position_complex (c); 535ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 536967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_bool_t position_fallback = !c->applied_position_complex; 537fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 538967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback (c); 539ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 540967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 541967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_buffer_reverse (c->buffer); 542ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 543fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 544967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback_visual (c); 545fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 546ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 547d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_hide_zerowidth (c); 548d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 549d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props1); 550d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props0); 551b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 552bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 5539f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod 5549f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod c->buffer->deallocate_var_all (); 555967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 556967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 557fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 55802aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbodhb_bool_t 559bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod_hb_ot_shape (hb_shape_plan_t *shape_plan, 560bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod hb_font_t *font, 5616bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod hb_buffer_t *buffer, 5626bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod const hb_feature_t *features, 5636bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod unsigned int num_features) 564967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 565e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_context_t c = {HB_SHAPER_DATA_GET (shape_plan), font, font->face, buffer, features, num_features}; 566e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_internal (&c); 56702aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod 5680594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod return true; 569ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 5701827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5711827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5721827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodvoid 5731827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodhb_ot_shape_glyphs_closure (hb_font_t *font, 5741827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_buffer_t *buffer, 5751827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod const hb_feature_t *features, 5761827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int num_features, 5771827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t *glyphs) 5781827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod{ 5791827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_ot_shape_plan_t plan; 5801827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5811827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod buffer->guess_properties (); 5821827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 583e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod /* TODO cache / ensure correct backend, etc. */ 584e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_shape_plan_t *shape_plan = hb_shape_plan_create (font->face, &buffer->props, features, num_features, NULL); 5851827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5861827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* TODO: normalization? have shapers do closure()? */ 5871827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* TODO: Deal with mirrored chars? */ 5881827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_map_glyphs (font, buffer); 5891827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5901827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* Seed it. It's user's responsibility to have cleard glyphs 5911827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod * if that's what they desire. */ 5921827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int count = buffer->len; 5931827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 5941827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_add (glyphs, buffer->info[i].codepoint); 5951827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 5961827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* And find transitive closure. */ 5971827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t copy; 5981827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.init (); 5991827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6001827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod do { 6011827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.set (glyphs); 6028bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod HB_SHAPER_DATA_GET (shape_plan)->substitute_closure (font->face, glyphs); 6031827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod } while (!copy.equal (glyphs)); 604e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 605e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_shape_plan_destroy (shape_plan); 6061827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod} 607