hb-ot-shape.cc revision 54d1a0d2b2c4ffe15494967122c6422ecb1fc80b
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 37f6fd3780e12b23ff7ed3743497c8996e71dcb064Behdad Esfahbodhb_tag_t common_features[] = { 382014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','c','m','p'), 3989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('l','o','c','l'), 4089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','a','r','k'), 4189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('m','k','m','k'), 4289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('r','l','i','g'), 4389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 4489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 4589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t horizontal_features[] = { 4689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('c','a','l','t'), 472014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('c','l','i','g'), 48bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('c','u','r','s'), 492014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod HB_TAG('k','e','r','n'), 50bd0987386b3a4dddf208ccf1a70ebfff6242ba73Behdad Esfahbod HB_TAG('l','i','g','a'), 5189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod}; 5289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 5389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod/* Note: 5489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * Technically speaking, vrt2 and vert are mutually exclusive. 5589a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * According to the spec, valt and vpal are also mutually exclusive. 5689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod * But we apply them all for now. 5789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod */ 5889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbodhb_tag_t vertical_features[] = { 5989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','a','l','t'), 6089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','e','r','t'), 6189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','k','r','n'), 6289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','p','a','l'), 6389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_TAG('v','r','t','2'), 642014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod}; 652014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 662014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbodstatic void 6790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbodhb_ot_shape_collect_features (hb_ot_shape_planner_t *planner, 6849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 6990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod const hb_feature_t *user_features, 7090645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod unsigned int num_user_features) 712014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 72895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod switch (props->direction) { 730e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_LTR: 7490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','a')); 7590645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('l','t','r','m')); 760e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 770e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_RTL: 7890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','a')); 7990645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_bool_feature (HB_TAG ('r','t','l','m'), false); 800e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 810e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_TTB: 820e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod case HB_DIRECTION_BTT: 833286fc0e9adc3f2874c9409e7fdb09e4d2b7dda1Behdad Esfahbod case HB_DIRECTION_INVALID: 840e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod default: 850e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod break; 860e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod } 870e235d0fc9bdeeaffa7215c21abc5d40767a10c7Behdad Esfahbod 8889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#define ADD_FEATURES(array) \ 8989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod HB_STMT_START { \ 9089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod for (unsigned int i = 0; i < ARRAY_LENGTH (array); i++) \ 9189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod planner->map.add_bool_feature (array[i]); \ 9289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod } HB_STMT_END 9389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 9476f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod hb_ot_shape_complex_collect_features (planner->shaper, &planner->map, props); 95e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod 9689a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (common_features); 9789a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 9889a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod if (HB_DIRECTION_IS_HORIZONTAL (props->direction)) 9989a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (horizontal_features); 10089a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod else 10189a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod ADD_FEATURES (vertical_features); 10289a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 10389a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod#undef ADD_FEATURES 10489a2bc9ba674e7e57fec1fd8ce7648a44f3aab63Behdad Esfahbod 105895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod for (unsigned int i = 0; i < num_user_features; i++) { 106895fb5d364e7ae5d9d2e34b9f68b8651804369efBehdad Esfahbod const hb_feature_t *feature = &user_features[i]; 10790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner->map.add_feature (feature->tag, feature->value, (feature->start == 0 && feature->end == (unsigned int) -1)); 108e04685ee7be01695ec437fab50f919f1b7423c57Behdad Esfahbod } 109e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod} 110e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 111e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod 112e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbodstatic void 11352601275d5e4000dada4f925fb78723eeeee7bd4Behdad Esfahbodhb_ot_shape_setup_masks (hb_ot_shape_context_t *c) 114e89b7d2a61b7f58e6c7cec00d5ce2246dee1e8a1Behdad Esfahbod{ 115605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t global_mask = c->plan->map.get_global_mask (); 11657ac0ecb7843533b2e6e6d6c8a12b2a44437cc1cBehdad Esfahbod c->buffer->reset_masks (global_mask); 1175b88908f12ad1d828dd6075fb8fc0036c2d6af3aBehdad Esfahbod 11876f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod hb_ot_shape_complex_setup_masks (c->plan->shaper, &c->plan->map, c->buffer); /* BUFFER: Clobbers var2 */ 1192989be4919242670c94825bded96db20a7b2035bBehdad Esfahbod 120d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod for (unsigned int i = 0; i < c->num_user_features; i++) 121efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod { 122d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *feature = &c->user_features[i]; 1234924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod if (!(feature->start == 0 && feature->end == (unsigned int)-1)) { 1244924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod unsigned int shift; 125605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod hb_mask_t mask = c->plan->map.get_mask (feature->tag, &shift); 126bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end); 1274924affe0f0adf75f2a0e2137a71206b0576d63fBehdad Esfahbod } 128efe0d682e860ffd23a1d17c68c8273f17d51c1c9Behdad Esfahbod } 1292014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 1302014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 1312014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 132967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 13336925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbodhb_ot_substitute_complex (hb_ot_shape_context_t *c) 1342014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 135967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!hb_ot_layout_has_substitution (c->face)) 136967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1372014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 138605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbod c->plan->map.substitute (c->face, c->buffer); 1392014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 140967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->applied_substitute_complex = TRUE; 141967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1422014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 1432014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 144967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 14536925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbodhb_ot_position_complex (hb_ot_shape_context_t *c) 1462014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod{ 1472014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 148967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!hb_ot_layout_has_positioning (c->face)) 149967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1502014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 15160fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod unsigned int count = c->buffer->len; 15260fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 15360fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod hb_font_add_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 15460fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod HB_DIRECTION_LTR, 15560fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].x_offset, 15660fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].y_offset); 15760fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod } 15860fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod 159b9452bfc1696457e156e79037c863903da5454fcBehdad Esfahbod c->plan->map.position (c->font, c->buffer); 1602014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 16160fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 16260fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 16360fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod HB_DIRECTION_LTR, 16460fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].x_offset, 16560fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod &c->buffer->pos[i].y_offset); 16660fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod } 16760fbb36096e344e9af79409ce8cfe3f1f7b0d321Behdad Esfahbod 1681e7c1fcbc33599faefc32d4a28e5d8506d2c56faBehdad Esfahbod hb_ot_layout_position_finish (c->buffer); 1692014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod 170967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->applied_position_complex = TRUE; 171967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod return; 1722014b8d110231b13e524008282ece7451f1ae9e7Behdad Esfahbod} 173ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 174ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 175ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Main shaper */ 176ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 177ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Prepare */ 178ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 179ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 1803a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodhb_set_unicode_props (hb_ot_shape_context_t *c) 1813a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod{ 182fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 1833a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_glyph_info_t *info = c->buffer->info; 1843a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 1853a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod unsigned int count = c->buffer->len; 1863a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 187c4641723fbf6532b2e80a662e15573b31276bc73Behdad Esfahbod info[i].general_category() = hb_unicode_general_category (unicode, info[i].codepoint); 188c4641723fbf6532b2e80a662e15573b31276bc73Behdad Esfahbod info[i].combining_class() = hb_unicode_combining_class (unicode, info[i].codepoint); 1893a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod } 1903a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod} 1913a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 1923a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbodstatic void 1936b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbodhb_form_clusters (hb_ot_shape_context_t *c) 194ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 1956b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod unsigned int count = c->buffer->len; 196ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) 1974a68684654e645882095c1189477146287ce9437Behdad Esfahbod if (FLAG (c->buffer->info[i].general_category()) & 1984a68684654e645882095c1189477146287ce9437Behdad Esfahbod (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | 1994a68684654e645882095c1189477146287ce9437Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | 20049741c86334d12fa08a5bfa2110ff3b9adcba1c7Behdad Esfahbod FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)) || 20149741c86334d12fa08a5bfa2110ff3b9adcba1c7Behdad Esfahbod is_variation_selector (c->buffer->info[c->buffer->i].codepoint)) 2026b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod c->buffer->info[i].cluster = c->buffer->info[i - 1].cluster; 203ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 204ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 205967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 2066b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbodhb_ensure_native_direction (hb_ot_shape_context_t *c) 207ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2086b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod hb_direction_t direction = c->buffer->props.direction; 209ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2107403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod /* TODO vertical: 2117403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType 2127403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * Ogham fonts are supposed to be implemented BTT or not. Need to research that 2137403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod * first. */ 2147403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (c->buffer->props.script)) || 2157403e055cd1463f38215ad9faedd61c3e1b66ac5Behdad Esfahbod (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB)) 216ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod { 2176b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod hb_buffer_reverse_clusters (c->buffer); 2186b7e6758626268ba1c7c266128e618ec73ae2c0fBehdad Esfahbod c->buffer->props.direction = HB_DIRECTION_REVERSE (c->buffer->props.direction); 219ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 220ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 221ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 22298370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbodstatic void 22398370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbodhb_reset_glyph_infos (hb_ot_shape_context_t *c) 22498370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod{ 22598370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod unsigned int count = c->buffer->len; 22698370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 22798370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod c->buffer->info[i].var1.u32 = c->buffer->info[i].var2.u32 = 0; 22898370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod} 22998370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 230ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 231ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Substitute */ 232ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 233ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 234aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbodhb_mirror_chars (hb_ot_shape_context_t *c) 235ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 236fb194b8794898f51eb596fa4092c26606889d376Behdad Esfahbod hb_unicode_funcs_t *unicode = c->buffer->unicode; 237ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 238bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod if (HB_DIRECTION_IS_FORWARD (c->target_direction)) 239ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 240ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 24139dede9ffffe732f78cbd092ccb3b48d77ddd66dBehdad Esfahbod hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m')); 2424e4ef24e46f273ad2bdda2f718223e05b37dd50fBehdad Esfahbod 243aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod unsigned int count = c->buffer->len; 244ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 245c4641723fbf6532b2e80a662e15573b31276bc73Behdad Esfahbod hb_codepoint_t codepoint = hb_unicode_mirroring (unicode, c->buffer->info[i].codepoint); 246aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod if (likely (codepoint == c->buffer->info[i].codepoint)) 247bd7378b2ef9793de4e7f57b920f29f48ac9d0c25Behdad Esfahbod c->buffer->info[i].mask |= rtlm_mask; /* XXX this should be moved to before setting user-feature masks */ 2481094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod else 249aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod c->buffer->info[i].codepoint = codepoint; 250ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 251ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 252ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 253ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 254ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodhb_map_glyphs (hb_font_t *font, 255ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod hb_buffer_t *buffer) 256ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 257ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod if (unlikely (!buffer->len)) 258ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod return; 259ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 2600fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_codepoint_t glyph; 261a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->clear_output (); 262ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod unsigned int count = buffer->len - 1; 263a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod for (buffer->i = 0; buffer->i < count;) { 264a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod if (unlikely (is_variation_selector (buffer->info[buffer->i + 1].codepoint))) { 2650fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, buffer->info[buffer->i + 1].codepoint, &glyph); 2660fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 2679111b21ef99d5e53348176f683261b0101eb427fBehdad Esfahbod buffer->skip_glyph (); 268ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } else { 2690fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, 0, &glyph); 2700fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 271ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 272ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 2730fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod if (likely (buffer->i < buffer->len)) { 2740fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod hb_font_get_glyph (font, buffer->info[buffer->i].codepoint, 0, &glyph); 2750fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod buffer->replace_glyph (glyph); 2760fd8c2f1be693616f19f2f1526369874763d6cf6Behdad Esfahbod } 277a224b4d502d026fa642ee4098bf7bc0b4ba7ce27Behdad Esfahbod buffer->swap (); 278ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 279ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 280ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 281967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_default (hb_ot_shape_context_t *c) 282ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 28372657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_map_glyphs (c->font, c->buffer); 284ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 285ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 286ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 287967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_substitute_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 288ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 289ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Arabic */ 290ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 291ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 292ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 293ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Position */ 294ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 295ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 296967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_default (hb_ot_shape_context_t *c) 297ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 2988f0d7e0c3fd4b05c43ac449be4f374dc2dc56127Behdad Esfahbod hb_ot_layout_position_start (c->buffer); 299ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 300967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 301ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 0; i < count; i++) { 302744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod hb_font_get_glyph_advance_for_direction (c->font, c->buffer->info[i].codepoint, 303744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod c->buffer->props.direction, 304744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].x_advance, 305744970af4d884cc87ffa645804578fec8df674a9Behdad Esfahbod &c->buffer->pos[i].y_advance); 3068b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod hb_font_subtract_glyph_origin_for_direction (c->font, c->buffer->info[i].codepoint, 3078b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod c->buffer->props.direction, 3088b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].x_offset, 3098b38faeede41e64eb0f6ac2e12ce51dd7138d50aBehdad Esfahbod &c->buffer->pos[i].y_offset); 310ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 311ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 312ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 313ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 314967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback (hb_ot_shape_context_t *c HB_UNUSED) 315ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 316ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Mark pos */ 317ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 318ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 319ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 320967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_truetype_kern (hb_ot_shape_context_t *c) 321ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 322ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod /* TODO Check for kern=0 */ 323967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod unsigned int count = c->buffer->len; 324ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod for (unsigned int i = 1; i < count; i++) { 325a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod hb_position_t x_kern, y_kern, kern1, kern2; 3267e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod hb_font_get_glyph_kerning_for_direction (c->font, 3277e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->info[i - 1].codepoint, c->buffer->info[i].codepoint, 3287e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod c->buffer->props.direction, 3297e2c85de305be59e1a6afa7d2061e4b7dd00acf7Behdad Esfahbod &x_kern, &y_kern); 330a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 331a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = x_kern >> 1; 332a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = x_kern - kern1; 333967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i - 1].x_advance += kern1; 334967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_advance += kern2; 335967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod c->buffer->pos[i].x_offset += kern2; 336a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod 337a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern1 = y_kern >> 1; 338a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod kern2 = y_kern - kern1; 339a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i - 1].y_advance += kern1; 340a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_advance += kern2; 341a513dbcf73ab1cc39a7c9653034904d0c6cd9fe9Behdad Esfahbod c->buffer->pos[i].y_offset += kern2; 342ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod } 343ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 344ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 345ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbodstatic void 346967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodhb_position_complex_fallback_visual (hb_ot_shape_context_t *c) 347ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 348967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_truetype_kern (c); 349ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 350ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 351ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 352ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod/* Do it! */ 353ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 354967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbodstatic void 355fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute_internal (hb_ot_shape_context_t *c) 356ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod{ 357d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod /* Save the original direction, we use it later. */ 358bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->target_direction = c->buffer->props.direction; 359d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 3603a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_reset_glyph_infos (c); /* BUFFER: Clear buffer var1 and var2 */ 361ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 3623a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_set_unicode_props (c); /* BUFFER: Set general_category and combining_class in var1 */ 3633a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod 3643a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_form_clusters (c); 365fc96596b7c1c4e62491e951a3c256fb00dcde550Behdad Esfahbod 36654d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod hb_ensure_native_direction (c); 36754d1a0d2b2c4ffe15494967122c6422ecb1fc80bBehdad Esfahbod 368655586fe5e1fadf2a2ef7826e61ee9a445ffa37aBehdad Esfahbod _hb_normalize (c); 369655586fe5e1fadf2a2ef7826e61ee9a445ffa37aBehdad Esfahbod 3703a852ae7fe6edfaadd75625d27515a3689503395Behdad Esfahbod hb_ot_shape_setup_masks (c); /* BUFFER: Clobbers var2 */ 37198370e89d1bff248737b482d129c2a4deb8bfd95Behdad Esfahbod 3721094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* SUBSTITUTE */ 373fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 374fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod /* Mirroring needs to see the original direction */ 375aa9c450bb2d7c3c9e36ea32e3558250391a0582dBehdad Esfahbod hb_mirror_chars (c); 376ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 377967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_default (c); 378bbc7a99d01298f9be1ebaaceacbc9bc961e247e5Behdad Esfahbod 37936925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_substitute_complex (c); 380ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 381967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (!c->applied_substitute_complex) 382967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_substitute_complex_fallback (c); 383fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 3841094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod 3851094a294f6a44c47fc75867983f2b135a6442babBehdad Esfahbod /* POSITION */ 386fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod { 387967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_default (c); 388ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 38936925f695d349a53d52ecc3a58f18240a6977463Behdad Esfahbod hb_ot_position_complex (c); 390ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 391967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_bool_t position_fallback = !c->applied_position_complex; 392fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 393967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback (c); 394ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 395967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction)) 396967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_buffer_reverse (c->buffer); 397ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 398fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod if (position_fallback) 399967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod hb_position_complex_fallback_visual (c); 400fdc322a82047c4bda9fa3dab4338a0eac1c1bde7Behdad Esfahbod } 401ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod 402bbbbe80ec9bc45c5b685bc09c8f993e98496555cBehdad Esfahbod c->buffer->props.direction = c->target_direction; 403967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod} 404967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 405376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 406605ed468f380f86d642031f6451447d270cb6de1Behdad Esfahbodhb_ot_shape_plan_internal (hb_ot_shape_plan_t *plan, 407d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod hb_face_t *face, 40849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod const hb_segment_properties_t *props, 409d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod const hb_feature_t *user_features, 410d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod unsigned int num_user_features) 411d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod{ 41290645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_planner_t planner; 41349baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 41490645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.shaper = hb_ot_shape_complex_categorize (props); 415d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 41690645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod hb_ot_shape_collect_features (&planner, props, user_features, num_user_features); 41790645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod 41890645fb24bcbb78183576d3641a99560d87e49f2Behdad Esfahbod planner.compile (face, props, *plan); 419d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod} 420d2ba016ca1ba7489537768b619980d5159b5870cBehdad Esfahbod 421376dafa6ed414e368e9dc1d5a2e0bfc8e55f410dBehdad Esfahbodstatic void 422fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodhb_ot_shape_execute (hb_ot_shape_plan_t *plan, 423fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_font_t *font, 424fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_buffer_t *buffer, 425fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod const hb_feature_t *user_features, 426fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod unsigned int num_user_features) 427fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod{ 42872657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_context_t c = {plan, font, font->face, buffer, user_features, num_user_features}; 429fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod hb_ot_shape_execute_internal (&c); 430fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod} 431fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbod 432fd3d32d31cb6d74a9994b6850d539fd0b707d941Behdad Esfahbodvoid 4335814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbodhb_ot_shape (hb_font_t *font, 4345814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod hb_buffer_t *buffer, 4355814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod const hb_feature_t *features, 4365814dfa3f5aa41bc3df06b78980d57d7bea0ba58Behdad Esfahbod unsigned int num_features) 437967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod{ 438e06d4eda7bbdb3a1be1f1ce8d98b059a0730f14dBehdad Esfahbod hb_ot_shape_plan_t plan; 439967240dd8b96802345ef273e75427066e91ea8fbBehdad Esfahbod 44072657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_plan_internal (&plan, font->face, &buffer->props, features, num_features); 44172657e4ce757dcb055a8db7291b68f96f0d34bfbBehdad Esfahbod hb_ot_shape_execute (&plan, font, buffer, features, num_features); 442ca663bb23c16f6a1f04efa6e10dad0e3e7c260a3Behdad Esfahbod} 443acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 444acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 445acdba3f90b232fc12fcb200dca2584481b339118Behdad EsfahbodHB_END_DECLS 446