hb-ot-shape.cc revision 76f76812ac7cca8ac6935952a2360d5e151480fa
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" 3013403bc67a01e0d4908fb964093fd02ddd11c580Behdad Esfahbod#include "hb-ot-shape-complex-private.hh" 312014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 3272657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod#include "hb-font-private.hh" 3372657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod 34acdba3f90b232fc12fcb200dca2584481b339118Behdad EsfahbodHB_BEGIN_DECLS 35acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 36acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 3789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t early_features[] = { 382014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 3989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 4089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 4189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 4289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t common_features[] = { 4389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 4689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 4789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 4889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t horizontal_features[] = { 4989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 502014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 51bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 522014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 53bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('l','i','g','a'), 5489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 5689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod/* Note: 5789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * Technically speaking, vrt2 and vert are mutually exclusive. 5889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * According to the spec, valt and vpal are also mutually exclusive. 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * But we apply them all for now. 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod */ 6189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t vertical_features[] = { 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','a','l','t'), 6389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 6489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','k','r','n'), 6589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','p','a','l'), 6689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','r','t','2'), 672014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 682014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 692014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 7090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 7149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 7290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 7390645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 742014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 75895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 760e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 7790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','a')); 7890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','m')); 790e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 800e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 8190645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','a')); 8290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','m'), false); 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 9189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#define ADD_FEATURES(array) \ 9289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_STMT_START { \ 9389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (array); i++) \ 9489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod planner->map.add_bool_feature (array[i]); \ 9589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod } HB_STMT_END 9689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 9789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (early_features); 98e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 9976f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod hb_ot_shape_complex_collect_features (planner->shaper, &planner->map, props); 100e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 10189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (common_features); 10289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 10389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 10489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (horizontal_features); 10589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 10689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (vertical_features); 10789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 10889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#undef ADD_FEATURES 10989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 110895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 111895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 11290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_feature (feature->tag, feature->value, (feature->start == 0 && feature->end == (unsigned int) -1)); 113e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 114e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 115e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 116e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 117e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbodstatic void 11852601275d5e4000dada4f925fb78723eeeee7bd4Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 119e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod{ 120605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t global_mask = c->plan->map.get_global_mask (); 12157ac0ecb7843533b2e6e6d6c8a12b2a44437cc1cBehdad Esfahbod c->buffer->reset_masks (global_mask); 1225b88908f12ad1d828dd6075fb8fc0036c2d6af3aBehdad Esfahbod 12376f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod hb_ot_shape_complex_setup_masks (c->plan->shaper, &c->plan->map, c->buffer); /* BUFFER: Clobbers var2 */ 1242989be4919242670c94825bded96db20a7b2035bBehdad Esfahbod 125d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 126efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod { 127d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 1284924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 1294924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod unsigned int shift; 130605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t mask = c->plan->map.get_mask (feature->tag, &shift); 131bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 1324924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 133efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod } 1342014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 1352014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 1362014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 137967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 13836925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 1392014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 140967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!hb_ot_layout_has_substitution (c->face)) 141967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1422014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 143605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod c->plan->map.substitute (c->face, c->buffer); 1442014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 145967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->applied_substitute_complex = TRUE; 146967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1472014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 1482014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 149967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 15036925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 1512014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 1522014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 153967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!hb_ot_layout_has_positioning (c->face)) 154967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1552014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 15660fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod unsigned int count = c->buffer->len; 15760fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 15860fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod hb_font_add_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 15960fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod HB_DIRECTION_LTR, 16060fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].x_offset, 16160fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].y_offset); 16260fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod } 16360fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod 164b9452bfc1696457e156e79037c863903da5454fcBehdad Esfahbod c->plan->map.position (c->font, c->buffer); 1652014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 16660fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 16760fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 16860fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod HB_DIRECTION_LTR, 16960fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].x_offset, 17060fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].y_offset); 17160fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod } 17260fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod 1731e7c1fcbc33599faefc32d4a28e5d8506d2c56faBehdad Esfahbod hb_ot_layout_position_finish (c->buffer); 1742014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 175967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->applied_position_complex = TRUE; 176967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1772014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 178ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 179ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 180ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 181ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 182ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 183ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 184ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic inline hb_bool_t 185ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodis_variation_selector (hb_codepoint_t unicode) 186ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 187ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return unlikely ((unicode >= 0x180B && unicode <= 0x180D) || /* MONGOLIAN FREE VARIATION SELECTOR ONE..THREE */ 188ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod (unicode >= 0xFE00 && unicode <= 0xFE0F) || /* VARIATION SELECTOR-1..16 */ 189ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod (unicode >= 0xE0100 && unicode <= 0xE01EF)); /* VARIATION SELECTOR-17..256 */ 190ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 191ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 192ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 1933a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodhb_set_unicode_props (hb_ot_shape_context_t *c) 1943a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 195fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 1963a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_glyph_info_t *info = c->buffer->info; 1973a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 1983a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod unsigned int count = c->buffer->len; 1993a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 200fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod info[i].general_category() = unicode->get_general_category (info[i].codepoint); 201fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod info[i].combining_class() = unicode->get_combining_class (info[i].codepoint); 2023a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod } 2033a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 2043a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 2053a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 2066b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbodhb_form_clusters (hb_ot_shape_context_t *c) 207ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2086b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod unsigned int count = c->buffer->len; 209ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) 21063b177e45c2405272da3fa6c26fe11ae37950bd0Behdad Esfahbod /* TODO: Match other mark types too? */ 21199b74760a4cddc798ab44b5ca897486bbb9c76d6Behdad Esfahbod if (c->buffer->info[i].general_category() == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) 2126b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod c->buffer->info[i].cluster = c->buffer->info[i - 1].cluster; 213ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 214ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 215967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 2166b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbodhb_ensure_native_direction (hb_ot_shape_context_t *c) 217ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2186b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod hb_direction_t direction = c->buffer->props.direction; 219ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2207403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 2217403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 2227403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2237403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 2247403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (c->buffer->props.script)) || 2257403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 226ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 2276b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod hb_buffer_reverse_clusters (c->buffer); 2286b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod c->buffer->props.direction = HB_DIRECTION_REVERSE (c->buffer->props.direction); 229ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 230ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 231ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 23298370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbodstatic void 23398370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbodhb_reset_glyph_infos (hb_ot_shape_context_t *c) 23498370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod{ 23598370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod unsigned int count = c->buffer->len; 23698370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 23798370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod c->buffer->info[i].var1.u32 = c->buffer->info[i].var2.u32 = 0; 23898370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod} 23998370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 240ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 241ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 242ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 243ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 244aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbodhb_mirror_chars (hb_ot_shape_context_t *c) 245ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 246fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 247ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 248bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 249ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 250ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 25139dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 2524e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 253aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 254ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 255fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_codepoint_t codepoint = unicode->get_mirroring (c->buffer->info[i].codepoint); 256aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 257bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; /* XXX this should be moved to before setting user-feature masks */ 2581094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 259aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 260ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 261ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 262ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 263ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 264ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodhb_map_glyphs (hb_font_t *font, 265ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod hb_buffer_t *buffer) 266ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 267ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod if (unlikely (!buffer->len)) 268ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 269ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2700fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_codepoint_t glyph; 271a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->clear_output (); 272ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod unsigned int count = buffer->len - 1; 273a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod for (buffer->i = 0; buffer->i < count;) { 274a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod if (unlikely (is_variation_selector (buffer->info[buffer->i + 1].codepoint))) { 2750fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, buffer->info[buffer->i + 1].codepoint, &glyph); 2760fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 277a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->i++; 278ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } else { 2790fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, 0, &glyph); 2800fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 281ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 282ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 2830fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod if (likely (buffer->i < buffer->len)) { 2840fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, 0, &glyph); 2850fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 2860fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod } 287a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->swap (); 288ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 289ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 290ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 291967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_default (hb_ot_shape_context_t *c) 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 29372657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_map_glyphs (c->font, c->buffer); 294ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 295ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 296ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 297967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 298ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 299ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Arabic */ 300ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 301ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 302ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 303ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 304ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 305ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 306967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_default (hb_ot_shape_context_t *c) 307ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 3088f0d7e0c3fd4b05c43ac449be4f374dc2dc56127Behdad Esfahbod hb_ot_layout_position_start (c->buffer); 309ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 310967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 311ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 312744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod hb_font_get_glyph_advance_for_direction (c->font, c->buffer->info[i].codepoint, 313744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod c->buffer->props.direction, 314744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].x_advance, 315744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].y_advance); 3168b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 3178b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod c->buffer->props.direction, 3188b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].x_offset, 3198b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].y_offset); 320ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 321ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 322ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 323ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 324967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 325ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 326ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Mark pos */ 327ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 328ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 329ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 330967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_truetype_kern (hb_ot_shape_context_t *c) 331ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 332ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Check for kern=0 */ 333967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 334ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 335a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod hb_position_t x_kern, y_kern, kern1, kern2; 3367e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod hb_font_get_glyph_kerning_for_direction (c->font, 3377e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->info[i - 1].codepoint, c->buffer->info[i].codepoint, 3387e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->props.direction, 3397e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod &x_kern, &y_kern); 340a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 341a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = x_kern >> 1; 342a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = x_kern - kern1; 343967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i - 1].x_advance += kern1; 344967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_advance += kern2; 345967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_offset += kern2; 346a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 347a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = y_kern >> 1; 348a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = y_kern - kern1; 349a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i - 1].y_advance += kern1; 350a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_advance += kern2; 351a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_offset += kern2; 352ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 353ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 354ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 355ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 356967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback_visual (hb_ot_shape_context_t *c) 357ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 358967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_truetype_kern (c); 359ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 360ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 361ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 362ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Do it! */ 363ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 364967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 365fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute_internal (hb_ot_shape_context_t *c) 366ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 367d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 368bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 369d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 3703a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_reset_glyph_infos (c); /* BUFFER: Clear buffer var1 and var2 */ 371ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3723a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_set_unicode_props (c); /* BUFFER: Set general_category and combining_class in var1 */ 3733a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 374ee8aaf976a6eb42be49b63b4c51c7a0a338e0298Behdad Esfahbod hb_ensure_native_direction (c); 375ee8aaf976a6eb42be49b63b4c51c7a0a338e0298Behdad Esfahbod 3763a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_form_clusters (c); 377fc96596b7c1c4e62491e951a3c256fb00dcde550Behdad Esfahbod 3783a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_ot_shape_setup_masks (c); /* BUFFER: Clobbers var2 */ 37998370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 3801094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* SUBSTITUTE */ 381fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 382fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod /* Mirroring needs to see the original direction */ 383aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod hb_mirror_chars (c); 384ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 385967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_default (c); 386bbc7a99d01298f9be1ebaaceacbc9bc961e247e5Behdad Esfahbod 38736925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_substitute_complex (c); 388ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 389967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!c->applied_substitute_complex) 390967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_complex_fallback (c); 391fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 3921094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod 3931094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* POSITION */ 394fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 395967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_default (c); 396ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 39736925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_position_complex (c); 398ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 399967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_bool_t position_fallback = !c->applied_position_complex; 400fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 401967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback (c); 402ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 403967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 404967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_buffer_reverse (c->buffer); 405ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 406fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 407967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback_visual (c); 408fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 409ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 410bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 411967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 412967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 413376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 414605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbodhb_ot_shape_plan_internal (hb_ot_shape_plan_t *plan, 415d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod hb_face_t *face, 41649baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 417d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *user_features, 418d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod unsigned int num_user_features) 419d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod{ 42090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_planner_t planner; 42149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 42290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (props); 423d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 42490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_collect_features (&planner, props, user_features, num_user_features); 42590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 42690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.compile (face, props, *plan); 427d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod} 428d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 429376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 430fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute (hb_ot_shape_plan_t *plan, 431fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_font_t *font, 432fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_buffer_t *buffer, 433fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod const hb_feature_t *user_features, 434fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod unsigned int num_user_features) 435fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod{ 43672657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_context_t c = {plan, font, font->face, buffer, user_features, num_user_features}; 437fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_ot_shape_execute_internal (&c); 438fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod} 439fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 440fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodvoid 4415814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbodhb_ot_shape (hb_font_t *font, 4425814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod hb_buffer_t *buffer, 4435814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod const hb_feature_t *features, 4445814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod unsigned int num_features) 445967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 446e06d4eda7bbdb3a1be1f1ce8d98b059a0730f14dBehdad Esfahbod hb_ot_shape_plan_t plan; 447967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 44872657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_plan_internal (&plan, font->face, &buffer->props, features, num_features); 44972657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_execute (&plan, font, buffer, features, num_features); 450ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 451acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 452acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 453acdba3f90b232fc12fcb200dca2584481b339118Behdad EsfahbodHB_END_DECLS 454