hb-ot-shape.cc revision b9f199c8e38cc5ed0d73845568630f3bcbdd4374
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 294924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod#include "hb-ot-shape-private.hh" 30b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod#include "hb-ot-shape-normalize-private.hh" 312014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 3272657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod#include "hb-font-private.hh" 3372657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod 34acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 35acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 36f6fd3780e12b23ff7ed3743497c8996e71dcb064Behdad Esfahbodhb_tag_t common_features[] = { 372014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 3889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 3989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 4289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 4389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 4489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t horizontal_features[] = { 4589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 462014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 47bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 482014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 49bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('l','i','g','a'), 5089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 5289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod/* Note: 5389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * Technically speaking, vrt2 and vert are mutually exclusive. 5489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * According to the spec, valt and vpal are also mutually exclusive. 5589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * But we apply them all for now. 5689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod */ 5789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t vertical_features[] = { 5889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','a','l','t'), 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','k','r','n'), 6189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','p','a','l'), 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','r','t','2'), 632014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 642014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 65b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 66b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 67b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_planner_t 68b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 69b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_map_builder_t map; 70b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_complex_shaper_t shaper; 71b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 72b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_planner_t (void) : map () {} 73b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod ~hb_ot_shape_planner_t (void) { map.finish (); } 74b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 75b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod inline void compile (hb_face_t *face, 76b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_segment_properties_t *props, 77b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod struct hb_ot_shape_plan_t &plan) 78b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod { 79b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod plan.shaper = shaper; 80b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod map.compile (face, props, plan.map); 81b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod } 82b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 83b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod private: 84b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod NO_COPY (hb_ot_shape_planner_t); 85b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 86b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 872014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 8890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 8949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 9090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 9190645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 922014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 93895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 940e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 9590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','a')); 9690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','m')); 970e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 980e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 9990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','a')); 10090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','m'), false); 1010e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 1020e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_TTB: 1030e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_BTT: 1043286fc0e9adc3f2874c9409e7fdb09e4d2b7dda1Behdad Esfahbod case HB_DIRECTION_INVALID: 1050e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod default: 1060e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 1070e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod } 1080e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod 10989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#define ADD_FEATURES(array) \ 11089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_STMT_START { \ 11189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (array); i++) \ 11289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod planner->map.add_bool_feature (array[i]); \ 11389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod } HB_STMT_END 11489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 11576f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod hb_ot_shape_complex_collect_features (planner->shaper, &planner->map, props); 116e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 11789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (common_features); 11889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 11989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 12089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (horizontal_features); 12189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 12289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (vertical_features); 12389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 12489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#undef ADD_FEATURES 12589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 126895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 127895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 12890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_feature (feature->tag, feature->value, (feature->start == 0 && feature->end == (unsigned int) -1)); 129e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 130e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 131e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 132e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 133b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstruct hb_ot_shape_context_t 134b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod{ 135b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod /* Input to hb_ot_shape_execute() */ 136b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_ot_shape_plan_t *plan; 137b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_font_t *font; 138b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_face_t *face; 139b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_buffer_t *buffer; 140b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod const hb_feature_t *user_features; 141b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod unsigned int num_user_features; 142b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 143b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod /* Transient stuff */ 144b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_direction_t target_direction; 145b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_bool_t applied_position_complex; 146b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod}; 147b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod 148e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbodstatic void 14952601275d5e4000dada4f925fb78723eeeee7bd4Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 150e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod{ 151605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t global_mask = c->plan->map.get_global_mask (); 15257ac0ecb7843533b2e6e6d6c8a12b2a44437cc1cBehdad Esfahbod c->buffer->reset_masks (global_mask); 1535b88908f12ad1d828dd6075fb8fc0036c2d6af3aBehdad Esfahbod 154acd88e659fdb2fa1cbf7171f0a1c7fbc81b9f298Behdad Esfahbod hb_ot_shape_complex_setup_masks (c->plan->shaper, &c->plan->map, c->buffer, c->font); 1552989be4919242670c94825bded96db20a7b2035bBehdad Esfahbod 156d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 157efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod { 158d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 1594924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 1604924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod unsigned int shift; 161605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t mask = c->plan->map.get_mask (feature->tag, &shift); 162bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 1634924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 164efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod } 1652014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 1662014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 1672014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 168ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 169ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 170ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 171ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 172b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodstatic void 173b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbodhb_set_unicode_props (hb_buffer_t *buffer) 1743a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 175aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 1760e3361464b00b76aa7375515163e0710a691db0cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 17745412523dc295cb5ee12e096bfacb282cc925843Behdad Esfahbod hb_glyph_info_set_unicode_props (&buffer->info[i], buffer->unicode); 1783a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 1793a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 1803a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 181aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_form_clusters (hb_buffer_t *buffer) 182ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 183aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod unsigned int count = buffer->len; 184ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) 185aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod if (FLAG (buffer->info[i].general_category()) & 1864a68684654e645882095c1189477146287ce9437Behdad Esfahbod (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | 1874a68684654e645882095c1189477146287ce9437Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | 188d63adfc7d09b26764d9166da97372b21257e7611Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK))) 189aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod buffer->info[i].cluster = buffer->info[i - 1].cluster; 190ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 191ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 192967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 193aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbodhb_ensure_native_direction (hb_buffer_t *buffer) 194ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 195aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_direction_t direction = buffer->props.direction; 196ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 1977403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 1987403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 1997403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2007403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 201aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (buffer->props.script)) || 2027403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 203ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 204aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_buffer_reverse_clusters (buffer); 205aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod buffer->props.direction = HB_DIRECTION_REVERSE (buffer->props.direction); 206ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 207ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 208ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 209ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 210ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 211ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 212ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 213aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbodhb_mirror_chars (hb_ot_shape_context_t *c) 214ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 215fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 216ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 217bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 218ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 219ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 22039dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 2214e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 222aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 223ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 224c4641723fbf6532b2e80a662e15573b31276bc73Behdad Esfahbod hb_codepoint_t codepoint = hb_unicode_mirroring (unicode, c->buffer->info[i].codepoint); 225aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 226bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; /* XXX this should be moved to before setting user-feature masks */ 2271094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 228aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 229ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 230ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 231ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 232ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 233ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodhb_map_glyphs (hb_font_t *font, 234ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod hb_buffer_t *buffer) 235ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2365d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod hb_codepoint_t glyph; 2375d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 238ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod if (unlikely (!buffer->len)) 239ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 240ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 241a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->clear_output (); 2425d90a342e319068716429bf7af76c3896b61a0e5Behdad Esfahbod 243ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod unsigned int count = buffer->len - 1; 244468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod for (buffer->idx = 0; buffer->idx < count;) { 2456769f21d579a354e32577ec57348e97d2cb1b438Behdad Esfahbod if (unlikely (_hb_unicode_is_variation_selector (buffer->info[buffer->idx + 1].codepoint))) { 246468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->idx].codepoint, buffer->info[buffer->idx + 1].codepoint, &glyph); 2470fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 2489111b21ef99d5e53348176f683261b0101eb427fBehdad Esfahbod buffer->skip_glyph (); 249ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } else { 250468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->idx].codepoint, 0, &glyph); 2510fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 252ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 253ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 254468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod if (likely (buffer->idx < buffer->len)) { 255468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->idx].codepoint, 0, &glyph); 2560fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 2570fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod } 258468e9cb25c9bc14781b7013e447d763f93bf76a3Behdad Esfahbod buffer->swap_buffers (); 259ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 260ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 261ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 262967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_default (hb_ot_shape_context_t *c) 263ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 264b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_ot_layout_substitute_start (c->buffer); 265b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 266b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_mirror_chars (c); 267b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 26872657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_map_glyphs (c->font, c->buffer); 269ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 270ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 271ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 272c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 273c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 2742118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod if (hb_ot_layout_has_substitution (c->face)) { 275b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->plan->map.substitute (c->face, c->buffer); 2762118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod } 277c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 278b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_ot_layout_substitute_finish (c->buffer); 279c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 280c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 281c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 282c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 283ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 284ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 285ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 286ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 287967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_default (hb_ot_shape_context_t *c) 288ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2898f0d7e0c3fd4b05c43ac449be4f374dc2dc56127Behdad Esfahbod hb_ot_layout_position_start (c->buffer); 290ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 291967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 293744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod hb_font_get_glyph_advance_for_direction (c->font, c->buffer->info[i].codepoint, 294744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod c->buffer->props.direction, 295744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].x_advance, 296744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].y_advance); 2978b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 2988b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod c->buffer->props.direction, 2998b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].x_offset, 3008b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].y_offset); 301ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 302ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 303ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 304ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 305c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 306c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod{ 307c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 308b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod if (hb_ot_layout_has_positioning (c->face)) 309b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod { 310b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod /* Change glyph origin to what GPOS expects, apply GPOS, change it back. */ 311b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 312b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod unsigned int count = c->buffer->len; 313b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 314b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_font_add_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 315b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_DIRECTION_LTR, 316b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].x_offset, 317b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].y_offset); 318b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 319c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 320b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->plan->map.position (c->font, c->buffer); 321c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 322b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 323b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 324b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_DIRECTION_LTR, 325b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].x_offset, 326b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod &c->buffer->pos[i].y_offset); 327b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod } 3282118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod 3292118fdb9f584e6735e904638e48bae48314372faBehdad Esfahbod c->applied_position_complex = TRUE; 330c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod } 331c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 332c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod hb_ot_layout_position_finish (c->buffer); 333c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 334c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod return; 335c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod} 336c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbod 337c86f932015bdf5803572b0904d343d3bc033e009Behdad Esfahbodstatic void 338967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 339ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 340ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Mark pos */ 341ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 342ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 343ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 344967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_truetype_kern (hb_ot_shape_context_t *c) 345ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 346ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Check for kern=0 */ 347967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 348ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 349a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod hb_position_t x_kern, y_kern, kern1, kern2; 3507e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod hb_font_get_glyph_kerning_for_direction (c->font, 3517e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->info[i - 1].codepoint, c->buffer->info[i].codepoint, 3527e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->props.direction, 3537e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod &x_kern, &y_kern); 354a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 355a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = x_kern >> 1; 356a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = x_kern - kern1; 357967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i - 1].x_advance += kern1; 358967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_advance += kern2; 359967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_offset += kern2; 360a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 361a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = y_kern >> 1; 362a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = y_kern - kern1; 363a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i - 1].y_advance += kern1; 364a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_advance += kern2; 365a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_offset += kern2; 366ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 367ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 368ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 369ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 370967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback_visual (hb_ot_shape_context_t *c) 371ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 372967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_truetype_kern (c); 373ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 374ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 375ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 376ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Do it! */ 377ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 378967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 379fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute_internal (hb_ot_shape_context_t *c) 380ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 381b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod c->buffer->deallocate_var_all (); 382b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 383d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 384bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 385d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 386b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, general_category); 387b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_BUFFER_ALLOCATE_VAR (c->buffer, combining_class); 388b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 389b9f199c8e38cc5ed0d73845568630f3bcbdd4374Behdad Esfahbod hb_set_unicode_props (c->buffer); /* BUFFER: Set general_category and combining_class */ 390fc96596b7c1c4e62491e951a3c256fb00dcde550Behdad Esfahbod 3914ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod hb_form_clusters (c->buffer); 3924ff0d2d9dfc4f7e4880a4e964ca9872624508ea0Behdad Esfahbod 393aa7264123a088936f2043b45d4d41ca7413fabe5Behdad Esfahbod hb_ensure_native_direction (c->buffer); 39454d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod 39511138ccff71f442da1fcf64faa0e1d22e083e775Behdad Esfahbod _hb_ot_shape_normalize (c->font, c->buffer, hb_ot_shape_complex_normalization_preference (c->plan->shaper)); 396655586fe5e1fadf2a2ef7826e61ee9a445ffa37aBehdad Esfahbod 397b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod hb_ot_shape_setup_masks (c); 39898370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 3991094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* SUBSTITUTE */ 400fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 401967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_default (c); 402bbc7a99d01298f9be1ebaaceacbc9bc961e247e5Behdad Esfahbod 40336925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_substitute_complex (c); 404fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 4051094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod 4061094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* POSITION */ 407fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 408967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_default (c); 409ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 41036925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_position_complex (c); 411ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 412967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_bool_t position_fallback = !c->applied_position_complex; 413fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 414967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback (c); 415ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 416967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 417967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_buffer_reverse (c->buffer); 418ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 419fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 420967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback_visual (c); 421fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 422ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 423b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, combining_class); 424b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod HB_BUFFER_DEALLOCATE_VAR (c->buffer, general_category); 425b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 426bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 4279f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod 4289f9bcceca6321d5a5812f878de1de39901349a78Behdad Esfahbod c->buffer->deallocate_var_all (); 429967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 430967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 431376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 432605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbodhb_ot_shape_plan_internal (hb_ot_shape_plan_t *plan, 433d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod hb_face_t *face, 43449baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 435d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *user_features, 436d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod unsigned int num_user_features) 437d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod{ 43890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_planner_t planner; 43949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 440d4adade217a61007dd2da5cd9eccf889f79a019aBehdad Esfahbod assert (HB_DIRECTION_IS_VALID (props->direction)); 441d4adade217a61007dd2da5cd9eccf889f79a019aBehdad Esfahbod 44290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (props); 443d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 44490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_collect_features (&planner, props, user_features, num_user_features); 44590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 44690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.compile (face, props, *plan); 447d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod} 448d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 449376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 450fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute (hb_ot_shape_plan_t *plan, 451fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_font_t *font, 452fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_buffer_t *buffer, 453fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod const hb_feature_t *user_features, 454fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod unsigned int num_user_features) 455fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod{ 45672657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_context_t c = {plan, font, font->face, buffer, user_features, num_user_features}; 457fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_ot_shape_execute_internal (&c); 458fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod} 459fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 46002aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbodhb_bool_t 4616bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod_hb_ot_shape (hb_font_t *font, 4626bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod hb_buffer_t *buffer, 4636bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod const hb_feature_t *features, 4646bd9b479b8b2befbb0847282e93beade197c8038Behdad Esfahbod unsigned int num_features) 465967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 466e06d4eda7bbdb3a1be1f1ce8d98b059a0730f14dBehdad Esfahbod hb_ot_shape_plan_t plan; 467967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 46802aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod buffer->guess_properties (); 46902aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod 47072657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_plan_internal (&plan, font->face, &buffer->props, features, num_features); 47172657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_execute (&plan, font, buffer, features, num_features); 47202aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod 47302aeca985b570763342c35e99af90025bfa088d5Behdad Esfahbod return TRUE; 474ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 475