hb-ot-shape.cc revision 91689de2603e4151e2a2d3a3852c61667f0c6264
12014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod/* 22409d5f8d7dd8b535ce5ea29e933f7db27d33793Behdad Esfahbod * Copyright © 2009,2010 Red Hat, Inc. 307d682806349aee81f53114778ce0beb23909ed7Behdad Esfahbod * Copyright © 2010,2011,2012 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" 3516c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod#include "hb-ot-shape-complex-private.hh" 369c929abdcfef44c0193a2917b20981df37ade21cBehdad Esfahbod#include "hb-ot-shape-fallback-private.hh" 37affaf8a0e5aa38e5820455f789eebf916e02eb7bBehdad Esfahbod#include "hb-ot-shape-normalize-private.hh" 382014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 39b70021f7c81a0ed08475b14b07291f662cd9f905Behdad Esfahbod#include "hb-ot-layout-private.hh" 401827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod#include "hb-set-private.hh" 4172657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod 42acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 43a02d86484be870615297abfc7be9f94645434762Behdad Esfahbodstatic hb_tag_t common_features[] = { 442014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 45a5f1834f57ea3fb254f5c7d372747de316fcc8f1Behdad Esfahbod HB_TAG('l','i','g','a'), 4689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 4789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 5089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 52d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 53a02d86484be870615297abfc7be9f94645434762Behdad Esfahbodstatic hb_tag_t horizontal_features[] = { 5489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 552014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 56bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 572014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 58f4e48adcdd4315ce09e755f87a0f801d88194f42Behdad Esfahbod HB_TAG('r','c','l','t'), 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 61a02d86484be870615297abfc7be9f94645434762Behdad Esfahbodstatic hb_tag_t vertical_features[] = { 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 632014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 642014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 65b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 66b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 672014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 6890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 6949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 7090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 7190645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 722014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 738bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod hb_ot_map_builder_t *map = &planner->map; 748bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod 75895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 760e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 77e7ffcfafb1108801ac504f18f820e497226bf07fBehdad Esfahbod map->add_global_bool_feature (HB_TAG ('l','t','r','a')); 78e7ffcfafb1108801ac504f18f820e497226bf07fBehdad Esfahbod map->add_global_bool_feature (HB_TAG ('l','t','r','m')); 790e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 800e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 81e7ffcfafb1108801ac504f18f820e497226bf07fBehdad Esfahbod map->add_global_bool_feature (HB_TAG ('r','t','l','a')); 82ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod map->add_feature (HB_TAG ('r','t','l','m'), 1, F_NONE); 830e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 840e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_TTB: 850e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_BTT: 863286fc0e9adc3f2874c9409e7fdb09e4d2b7dda1Behdad Esfahbod case HB_DIRECTION_INVALID: 870e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod default: 880e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 890e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod } 900e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod 91693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->collect_features) 9216c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod planner->shaper->collect_features (planner); 93e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 94ee9c3a17d0bf263c5eee479fd778db97cff8e189Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (common_features); i++) 95ee9c3a17d0bf263c5eee479fd778db97cff8e189Behdad Esfahbod map->add_global_bool_feature (common_features[i]); 9689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 9789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 98ee9c3a17d0bf263c5eee479fd778db97cff8e189Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (horizontal_features); i++) 99038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod map->add_feature (horizontal_features[i], 1, F_GLOBAL | 100038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod (horizontal_features[i] == HB_TAG('k','e','r','n') ? 101038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod F_HAS_FALLBACK : F_NONE)); 10289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 103ee9c3a17d0bf263c5eee479fd778db97cff8e189Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (vertical_features); i++) 104038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod map->add_feature (vertical_features[i], 1, F_GLOBAL | 105038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod (vertical_features[i] == HB_TAG('v','k','r','n') ? 106038c98f6866fe1177b04bd2ae3bb461b2f0fd1edBehdad Esfahbod F_HAS_FALLBACK : F_NONE)); 10789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 108693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod if (planner->shaper->override_features) 10916c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod planner->shaper->override_features (planner); 110d96838ef951ce6170eb2dc576ebcba2262cf7008Behdad Esfahbod 111895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 112895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 113ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod map->add_feature (feature->tag, feature->value, 114ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod (feature->start == 0 && feature->end == (unsigned int) -1) ? 115ec5448667b30ad662401c2b4f5fc0da524c013fdBehdad Esfahbod F_GLOBAL : F_NONE); 116e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 117e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 118e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 119e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 120e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 121e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper face data 122e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 123e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 124e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_face_data_t * 125e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_create (hb_face_t *face) 126e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 127e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return _hb_ot_layout_create (face); 128e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 129e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 130e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 131e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data) 132e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 133e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod _hb_ot_layout_destroy (data); 134e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 135e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 136e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 137e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 138e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper font data 139e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 140e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 141e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodstruct hb_ot_shaper_font_data_t {}; 142e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 143e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_font_data_t * 144e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_create (hb_font_t *font) 145e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 146e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return (hb_ot_shaper_font_data_t *) HB_SHAPER_DATA_SUCCEEDED; 147e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 148e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 149e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 150e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_font_data_destroy (hb_ot_shaper_font_data_t *data) 151e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 152e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 153e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 154e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 155e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 156e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper shape_plan data 157e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 158e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 159e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shaper_shape_plan_data_t * 160e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod_hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan, 161e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod const hb_feature_t *user_features, 162e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod unsigned int num_user_features) 163e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 164a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod hb_ot_shape_plan_t *plan = (hb_ot_shape_plan_t *) calloc (1, sizeof (hb_ot_shape_plan_t)); 165a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (unlikely (!plan)) 166e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod return NULL; 167e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 1685393e3a62ba09fd7bcf3767b36225c8f49badb9dBehdad Esfahbod hb_ot_shape_planner_t planner (shape_plan); 169e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 1709b37b4c5800b158f61602d2aba8a01349e24d251Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (&planner); 171e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 172e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_collect_features (&planner, &shape_plan->props, user_features, num_user_features); 173e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 174a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod planner.compile (*plan); 175e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 176a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (plan->shaper->data_create) { 177a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->data = plan->shaper->data_create (plan); 178a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (unlikely (!plan->data)) 179a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod return NULL; 180a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod } 181a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 182a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod return plan; 183e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 184e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 185e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodvoid 186a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod_hb_ot_shaper_shape_plan_data_destroy (hb_ot_shaper_shape_plan_data_t *plan) 187e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod{ 188a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod if (plan->shaper->data_destroy) 189a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->shaper->data_destroy (const_cast<void *> (plan->data)); 190a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 191a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod plan->finish (); 1924ba647eecf0f70917ac4229af1f2dd3c62fcb7d5Behdad Esfahbod 193a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod free (plan); 194e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod} 195e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 196e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 197e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod/* 198e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod * shaper 199e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod */ 200e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 201b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_context_t 202b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 203b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_plan_t *plan; 204b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_font_t *font; 205b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_face_t *face; 206b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_buffer_t *buffer; 207b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_feature_t *user_features; 208b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod unsigned int num_user_features; 209b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 210b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod /* Transient stuff */ 211b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_direction_t target_direction; 212b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 213b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 2142014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 2152014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 216ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 217ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2185c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 219ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 220ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 221b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstatic void 222b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodhb_set_unicode_props (hb_buffer_t *buffer) 2233a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 224aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 2250e3361464b00b76aa7375515163e0710a691db0cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 226d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod _hb_glyph_info_set_unicode_props (&buffer->info[i], buffer->unicode); 2273a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 2283a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 2293a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 2306912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbodhb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font) 2316912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod{ 2320c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbod if (!(buffer->flags & HB_BUFFER_FLAG_BOT) || 233f2eb3fa9dca8d21fae20c9b9dddad3245df74a05Behdad Esfahbod _hb_glyph_info_get_general_category (&buffer->info[0]) != 2346912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) 2356912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod return; 2366912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2376912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod hb_codepoint_t dottedcircle_glyph; 2386912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod if (!font->get_glyph (0x25CC, 0, &dottedcircle_glyph)) 2396912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod return; 2406912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2416912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod hb_glyph_info_t dottedcircle; 2426912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod dottedcircle.codepoint = 0x25CC; 2436912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod _hb_glyph_info_set_unicode_props (&dottedcircle, buffer->unicode); 2446912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2456912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod buffer->clear_output (); 2466912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2476912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod buffer->idx = 0; 2486912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod hb_glyph_info_t info = dottedcircle; 2496912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod info.cluster = buffer->cur().cluster; 2506912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod info.mask = buffer->cur().mask; 2516912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod buffer->output_info (info); 2526912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod while (buffer->idx < buffer->len) 2536912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod buffer->next_glyph (); 2546912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2556912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod buffer->swap_buffers (); 2566912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod} 2576912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod 2586912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad 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++) 263028a1706f898bfcee0d14acfba47ebe1de09f0c4Behdad Esfahbod if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->info[i]))) 264330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod buffer->merge_clusters (i - 1, i + 1); 265ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 266ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 267967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 268aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_ensure_native_direction (hb_buffer_t *buffer) 269ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 270aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_direction_t direction = buffer->props.direction; 271ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2727403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 2737403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 2747403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2757403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 276aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (buffer->props.script)) || 2777403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 278ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 279aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_buffer_reverse_clusters (buffer); 280aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod buffer->props.direction = HB_DIRECTION_REVERSE (buffer->props.direction); 281ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 282ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 283ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 284ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 285ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 286ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2875c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 2885c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_mirror_chars (hb_ot_shape_context_t *c) 289ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 290bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 291ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2935c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 29439dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 2954e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 296aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 297ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 298208f70f0553d73d2908b21b9552298029482a8b9Behdad Esfahbod hb_codepoint_t codepoint = unicode->mirroring (c->buffer->info[i].codepoint); 299aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 30012c0875eafa4bd92db650e5acca046d99594d1e6Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; 3011094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 302aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 303ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 304ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 305ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3065c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 3075c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 3085c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod{ 3095c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_map_t *map = &c->plan->map; 3105c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 3115c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_mask_t global_mask = map->get_global_mask (); 3125c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod c->buffer->reset_masks (global_mask); 3135c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 3145c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod if (c->plan->shaper->setup_masks) 3155c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod c->plan->shaper->setup_masks (c->plan, c->buffer, c->font); 3165c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 3175c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 3185c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod { 3195c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 3205c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 3215c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod unsigned int shift; 3225c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_mask_t mask = map->get_mask (feature->tag, &shift); 3235c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 3245c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod } 3255c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod } 3265c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod} 3275c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 3285c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 329b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbodhb_ot_map_glyphs_fast (hb_buffer_t *buffer) 330ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 331b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod /* Normalization process sets up glyph_index(), we just copy it. */ 332b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod unsigned int count = buffer->len; 333b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 334b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod buffer->info[i].codepoint = buffer->info[i].glyph_index(); 335ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 336ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3375c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 3380ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbodhb_synthesize_glyph_classes (hb_ot_shape_context_t *c) 3390ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbod{ 3400ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbod unsigned int count = c->buffer->len; 3410ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 34291689de2603e4151e2a2d3a3852c61667f0c6264Behdad Esfahbod _hb_glyph_info_set_glyph_props (&c->buffer->info[i], 34391689de2603e4151e2a2d3a3852c61667f0c6264Behdad Esfahbod _hb_glyph_info_get_general_category (&c->buffer->info[i]) 34491689de2603e4151e2a2d3a3852c61667f0c6264Behdad Esfahbod == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK ? 34591689de2603e4151e2a2d3a3852c61667f0c6264Behdad Esfahbod HB_OT_LAYOUT_GLYPH_PROPS_MARK : 34691689de2603e4151e2a2d3a3852c61667f0c6264Behdad Esfahbod HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); 3470ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbod} 3480ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbod 3490ccf9b64736559a230425fd131c9eb8aa3048221Behdad Esfahbodstatic inline void 3505c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_substitute_default (hb_ot_shape_context_t *c) 351ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 352fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod if (c->plan->shaper->preprocess_text) 3539f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod c->plan->shaper->preprocess_text (c->plan, c->buffer, c->font); 3549f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 3555c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_mirror_chars (c); 3565c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 357b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, glyph_index); 358b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod 359eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod _hb_ot_shape_normalize (c->plan, c->buffer, c->font); 3605c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 3615c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_shape_setup_masks (c); 362b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 3633992b5ec4cb43d114d87ff7ee2b992bcf819c9cdBehdad Esfahbod /* This is unfortunate to go here, but necessary... */ 3643992b5ec4cb43d114d87ff7ee2b992bcf819c9cdBehdad Esfahbod if (!hb_ot_layout_has_positioning (c->face)) 3653992b5ec4cb43d114d87ff7ee2b992bcf819c9cdBehdad Esfahbod _hb_ot_shape_fallback_position_recategorize_marks (c->plan, c->font, c->buffer); 3663992b5ec4cb43d114d87ff7ee2b992bcf819c9cdBehdad Esfahbod 367b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod hb_ot_map_glyphs_fast (c->buffer); 368b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod 369b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, glyph_index); 370ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 371ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3725c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 373c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 374c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 375afbcc24be01a64bdb5c05c63880269145fa1d3c8Behdad Esfahbod hb_ot_layout_substitute_start (c->font, c->buffer); 37605bd1b63426e07d1df7a1b40bf845dc94ab995a8Behdad Esfahbod 3775fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod if (!hb_ot_layout_has_glyph_classes (c->face)) 3785fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod hb_synthesize_glyph_classes (c); 3795fecd8b0355894ceda14b3d3c654f20c3d5e77f4Behdad Esfahbod 380fabd3113a98c5f4114f48920fa7ea38bd65a8d32Behdad Esfahbod c->plan->substitute (c->font, c->buffer); 381c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 382afbcc24be01a64bdb5c05c63880269145fa1d3c8Behdad Esfahbod hb_ot_layout_substitute_finish (c->font, c->buffer); 383c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 384c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 385c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 386c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 3875c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 3885c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_substitute (hb_ot_shape_context_t *c) 3895c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod{ 3905c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_substitute_default (c); 3915c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_substitute_complex (c); 3925c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod} 393ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 394ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 395ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3965c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 397d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbodzero_mark_widths_by_unicode (hb_buffer_t *buffer) 398d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod{ 399d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod unsigned int count = buffer->len; 400d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 401d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod if (_hb_glyph_info_get_general_category (&buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) 402d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod { 403d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod buffer->pos[i].x_advance = 0; 404d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod buffer->pos[i].y_advance = 0; 405d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod } 406d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod} 407d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod 408d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbodstatic inline void 409d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbodzero_mark_widths_by_gdef (hb_buffer_t *buffer) 410d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod{ 411d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod unsigned int count = buffer->len; 412d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 413d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod if ((buffer->info[i].glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK)) 414d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod { 415d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod buffer->pos[i].x_advance = 0; 416d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod buffer->pos[i].y_advance = 0; 417d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod } 418d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod} 419d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod 420d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbodstatic inline void 4215c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_position_default (hb_ot_shape_context_t *c) 422ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 423967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 424568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 425568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod { 4268fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->get_glyph_advance_for_direction (c->buffer->info[i].codepoint, 4278fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->buffer->props.direction, 4288fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_advance, 4298fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_advance); 4308fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint, 4318fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->buffer->props.direction, 4328fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 4338fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 434568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 435568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod } 4364b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod} 4374b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod 4384b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbodstatic inline bool 4394b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 4404b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod{ 4414b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod bool ret = false; 4424b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod unsigned int count = c->buffer->len; 443568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 444568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod switch (c->plan->shaper->zero_width_marks) 445568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod { 446127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY: 447d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod zero_mark_widths_by_gdef (c->buffer); 448568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod break; 449568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 450127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod /* Not currently used for any shaper: 451127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_EARLY: 452d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod zero_mark_widths_by_unicode (c->buffer); 453127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod break; 454127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod */ 455127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod 456568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod default: 457568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE: 458127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE: 459127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE: 460568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod break; 461ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 462c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 463b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod if (hb_ot_layout_has_positioning (c->face)) 464b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod { 465b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod /* Change glyph origin to what GPOS expects, apply GPOS, change it back. */ 466b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 467b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 4688fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->add_glyph_origin_for_direction (c->buffer->info[i].codepoint, 4698fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod HB_DIRECTION_LTR, 4708fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 4718fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 472b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 473c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 4748bb5deba9630d35878eb6edb4643ecfabf99f15fBehdad Esfahbod c->plan->position (c->font, c->buffer); 475c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 476b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 4778fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint, 4788fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod HB_DIRECTION_LTR, 4798fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].x_offset, 4808fbfda920e0b3bb4ab7afb732826026964b79be9Behdad Esfahbod &c->buffer->pos[i].y_offset); 481b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 4822118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod 4835c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod ret = true; 484affaf8a0e5aa38e5820455f789eebf916e02eb7bBehdad Esfahbod } 4852bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 4860291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod switch (c->plan->shaper->zero_width_marks) 4870291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod { 488127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE: 489d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod zero_mark_widths_by_unicode (c->buffer); 4900291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod break; 4910291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod 492127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE: 493d785fa0c45f7f25f5e5f352b933a5f6fa29be5c0Behdad Esfahbod zero_mark_widths_by_gdef (c->buffer); 494127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod break; 495127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod 4960291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod default: 4970291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE: 498127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod //case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_EARLY: 499127daf15e0b2f509ebd29a104236c8b38884efb0Behdad Esfahbod case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY: 5000291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod break; 5010291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod } 5020291a6528685f1f593707655943fb2360579cb9eBehdad Esfahbod 5035c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod return ret; 504c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 505c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 5065c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodstatic inline void 5075c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbodhb_ot_position (hb_ot_shape_context_t *c) 5085c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod{ 5094b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod hb_ot_layout_position_start (c->font, c->buffer); 5104b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod 5115c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_position_default (c); 5125c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 5135c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_bool_t fallback = !hb_ot_position_complex (c); 5145c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 5154b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod hb_ot_layout_position_finish (c->font, c->buffer); 5164b011094d5e90cf93df2891e47aeab1bffad5bbfBehdad Esfahbod 517865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod if (fallback && c->plan->shaper->fallback_position) 518865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod _hb_ot_shape_fallback_position (c->plan, c->font, c->buffer); 5195c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 5205c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 5215c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_buffer_reverse (c->buffer); 5225c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 523865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod /* Visual fallback goes here. */ 524865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod 5255c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod if (fallback) 526ba87b8fc89bf745068ccd19264a2631ea0904846Behdad Esfahbod _hb_ot_shape_fallback_kern (c->plan, c->font, c->buffer); 527ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 528ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 5295c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 5305c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod/* Post-process */ 5315c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod 532d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbodstatic void 5330c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbodhb_ot_hide_default_ignorables (hb_ot_shape_context_t *c) 534d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod{ 5350c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbod if (c->buffer->flags & HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES) 5360c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbod return; 5370c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbod 5383d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod hb_codepoint_t space; 5393d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod enum { 5403d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod SPACE_DONT_KNOW, 5413d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod SPACE_AVAILABLE, 5423d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod SPACE_UNAVAILABLE 5433d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod } space_status = SPACE_DONT_KNOW; 544d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 545d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod unsigned int count = c->buffer->len; 5463d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod hb_glyph_info_t *info = c->buffer->info; 5473d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod hb_glyph_position_t *pos = c->buffer->pos; 5483d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod unsigned int j = 0; 549d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 5503d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod { 5513ddf892b5328b74afb6e7d9da727d8771ca5d288Behdad Esfahbod if (unlikely (!_hb_glyph_info_is_ligated (&info[i]) && 5523d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod _hb_glyph_info_is_default_ignorable (&info[i]))) 553784f29d061a2939562eca0c4943feb01174aee00Behdad Esfahbod { 5543d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod if (space_status == SPACE_DONT_KNOW) 5553d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod space_status = c->font->get_glyph (' ', 0, &space) ? SPACE_AVAILABLE : SPACE_UNAVAILABLE; 5563d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod 5573d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod if (space_status == SPACE_AVAILABLE) 5583d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod { 5593d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod info[i].codepoint = space; 5603d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod pos[i].x_advance = 0; 5613d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod pos[i].y_advance = 0; 562784f29d061a2939562eca0c4943feb01174aee00Behdad Esfahbod } 5633d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod else 5643d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod continue; /* Delete it. */ 5653d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod } 5663d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod if (j != i) 5673d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod { 5683d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod info[j] = info[i]; 5693d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod pos[j] = pos[i]; 570d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod } 5713d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod j++; 5723d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod } 5733d2c4f0c2ff8fab4262988aad65b170e5b479b20Behdad Esfahbod c->buffer->len = j; 574d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod} 575d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 576ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 5775c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod/* Pull it all together! */ 578ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 579967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 580e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbodhb_ot_shape_internal (hb_ot_shape_context_t *c) 581ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 582b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->buffer->deallocate_var_all (); 583b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 584d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 585bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 586d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 587d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props0); 588d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props1); 589b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 590330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod c->buffer->clear_output (); 591330a2af3ff0e12c01b3b451357b8bdc83b2e9b47Behdad Esfahbod 592d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod hb_set_unicode_props (c->buffer); 5936912e476dd92639c3ddf07ca51c8d4a262c8b3a5Behdad Esfahbod hb_insert_dotted_circle (c->buffer, c->font); 5944ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod hb_form_clusters (c->buffer); 5954ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod 596aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_ensure_native_direction (c->buffer); 59754d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod 5985c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_substitute (c); 5995c60b70c89b4e0a6512d9fd1ab5394dd76feb742Behdad Esfahbod hb_ot_position (c); 600ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 6010c7df2222862122ebbdc8665a21d6771ef5e0252Behdad Esfahbod hb_ot_hide_default_ignorables (c); 602d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod 603d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props1); 604d1deaa2f5bd028e8076265cba92cffa4fa2834acBehdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props0); 605b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 606bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 6079f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod 6089f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod c->buffer->deallocate_var_all (); 609967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 610967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 611fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 61202aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbodhb_bool_t 613bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod_hb_ot_shape (hb_shape_plan_t *shape_plan, 614bd26b4d21f59312805d294f46f15182adbcc47daBehdad Esfahbod hb_font_t *font, 6156bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod hb_buffer_t *buffer, 6166bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod const hb_feature_t *features, 6176bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod unsigned int num_features) 618967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 619e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_context_t c = {HB_SHAPER_DATA_GET (shape_plan), font, font->face, buffer, features, num_features}; 620e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_ot_shape_internal (&c); 62102aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod 6220594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod return true; 623ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 6241827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6251827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 626f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbodvoid 627f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbodhb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan, 628f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_tag_t table_tag, 629f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_set_t *lookup_indexes /* OUT */) 630f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod{ 63151bb498b7b07bff4a447405b72f09b68d07a3e95Behdad Esfahbod /* XXX Does the first part always succeed? */ 632f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod HB_SHAPER_DATA_GET (shape_plan)->collect_lookups (table_tag, lookup_indexes); 633f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod} 634b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod 635f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod 636f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod/* TODO Move this to hb-ot-shape-normalize, make it do decompose, and make it public. */ 637f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbodstatic void 638f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbodadd_char (hb_font_t *font, 639f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_unicode_funcs_t *unicode, 640f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_bool_t mirror, 641f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_codepoint_t u, 642f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_set_t *glyphs) 643b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod{ 644f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_codepoint_t glyph; 645f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod if (font->get_glyph (u, 0, &glyph)) 646f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod glyphs->add (glyph); 647f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod if (mirror) 648f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod { 649f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_codepoint_t m = unicode->mirroring (u); 650f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod if (m != u && font->get_glyph (m, 0, &glyph)) 651f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod glyphs->add (glyph); 652f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod } 653b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod} 654b00321ea78793d9b3592b5173a9800e6322424feBehdad Esfahbod 655f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod 6561827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodvoid 6571827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbodhb_ot_shape_glyphs_closure (hb_font_t *font, 6581827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_buffer_t *buffer, 6591827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod const hb_feature_t *features, 6601827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int num_features, 6611827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t *glyphs) 6621827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod{ 6631827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_ot_shape_plan_t plan; 6641827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 665f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod const char *shapers[] = {"ot", NULL}; 666f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_shape_plan_t *shape_plan = hb_shape_plan_create_cached (font->face, &buffer->props, 667f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod features, num_features, shapers); 6681827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 669f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod bool mirror = hb_script_get_horizontal_direction (buffer->props.script) == HB_DIRECTION_RTL; 6701827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6711827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod unsigned int count = buffer->len; 6721827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 673f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod add_char (font, buffer->unicode, mirror, buffer->info[i].codepoint, glyphs); 674f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod 675f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_set_t lookups; 676f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod lookups.init (); 677f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_ot_shape_plan_collect_lookups (shape_plan, HB_OT_TAG_GSUB, &lookups); 6781827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod 6791827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod /* And find transitive closure. */ 6801827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod hb_set_t copy; 6811827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.init (); 6821827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod do { 6831827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod copy.set (glyphs); 684f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod for (hb_codepoint_t lookup_index = -1; hb_set_next (&lookups, &lookup_index);) 685f30641038ba96e83950729b1bd9d86d2e98e46c5Behdad Esfahbod hb_ot_layout_lookup_substitute_closure (font->face, lookup_index, glyphs); 686aec89de5641fbe1c3031d63dd5f40ec99bf2a538Behdad Esfahbod } while (!copy.is_equal (glyphs)); 687e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod 688e82061e8db922f0ddbefd5a184ee2f9f967b9a05Behdad Esfahbod hb_shape_plan_destroy (shape_plan); 6891827dc208c867e433a95237d1ed3fc7a73d1d9a7Behdad Esfahbod} 690