hb-ot-shape-complex-private.hh revision 5676d5d52784e16068ae483103d59111a8081854
149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod/* 2cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod * Copyright © 2010,2011,2012 Google, Inc. 349baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * 449baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * 649baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * Permission is hereby granted, without written agreement and without 749baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * software and its documentation for any purpose, provided that the 949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 1049baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * all copies of this software. 1149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * 1249baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 1349baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 1449baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 1549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 1649baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * DAMAGE. 1749baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * 1849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 1949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 2049baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 2149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 2249baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 2349baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * 2449baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod * Google Author(s): Behdad Esfahbod 2549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod */ 2649baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 2749baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod#ifndef HB_OT_SHAPE_COMPLEX_PRIVATE_HH 2849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod#define HB_OT_SHAPE_COMPLEX_PRIVATE_HH 2949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 30c57d454accff66e5f2c58006e8fb40bc020b6182Behdad Esfahbod#include "hb-private.hh" 3149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 3216c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod#include "hb-ot-shape-private.hh" 3311138ccff71f442da1fcf64faa0e1d22e083e775Behdad Esfahbod#include "hb-ot-shape-normalize-private.hh" 3449baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 3549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 3649baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 37b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod/* buffer var allocations, used by complex shapers */ 38cd0c6e148f6d078b364370cb2f808b793b921be2Behdad Esfahbod#define complex_var_u8_0() var2.u8[2] 39cd0c6e148f6d078b364370cb2f808b793b921be2Behdad Esfahbod#define complex_var_u8_1() var2.u8[3] 40b65c06025d2b54a44f716e030d4b10072c65bea8Behdad Esfahbod 4176f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod 42568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbodenum hb_ot_shape_zero_width_marks_type_t { 43568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE, 44568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE, 45568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF 46568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod}; 47568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 48693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 49693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod/* Master OT shaper list */ 50d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod#define HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS \ 51d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (default) /* should be first */ \ 52d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (arabic) \ 53d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (indic) \ 5498628cac9f733f2674d6409954cddb7d0634c233Behdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (myanmar) \ 553b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (thai) \ 56d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod /* ^--- Add new shapers here */ 57d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod 58693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 59693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbodstruct hb_ot_complex_shaper_t 60693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod{ 61693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod char name[8]; 62693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 63693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* collect_features() 64693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Called during shape_plan(). 6516c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Shapers should use plan->map to add their features and callbacks. 660736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 67693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 6816c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*collect_features) (hb_ot_shape_planner_t *plan); 69693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 70693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* override_features() 71693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Called during shape_plan(). 7216c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Shapers should use plan->map to override features and add callbacks after 73693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * common features are added. 740736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 75693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 7616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*override_features) (hb_ot_shape_planner_t *plan); 77693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 78a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 79a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod /* data_create() 80a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Called at the end of shape_plan(). 81a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Whatever shapers return will be accessible through plan->data later. 82a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * If NULL is returned, means a plan failure. 839f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod */ 84a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod void *(*data_create) (const hb_ot_shape_plan_t *plan); 85a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 86a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod /* data_destroy() 87a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Called when the shape_plan is being destroyed. 88a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * plan->data is passed here for destruction. 89a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * If NULL is returned, means a plan failure. 900736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 910736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 92a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod void (*data_destroy) (void *data); 93a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 949f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 959f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod /* preprocess_text() 969f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Called during shape(). 979f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Shapers can use to modify text before shaping starts. 980736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 999f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod */ 1009f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod void (*preprocess_text) (const hb_ot_shape_plan_t *plan, 1019f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod hb_buffer_t *buffer, 1029f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod hb_font_t *font); 1039f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 1049f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 105693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* normalization_preference() 10616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Called during shape(). 1070736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 108693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 109693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod hb_ot_shape_normalization_mode_t 1100736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod (*normalization_preference) (const hb_segment_properties_t *props); 1110736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod 1120736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod /* decompose() 1130736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * Called during shape()'s normalization. 1140736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 1150736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 116eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod bool (*decompose) (const hb_ot_shape_normalize_context_t *c, 117eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t ab, 118eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *a, 119eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *b); 1200736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod 1210736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod /* compose() 1220736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * Called during shape()'s normalization. 1230736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 1240736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 125eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod bool (*compose) (const hb_ot_shape_normalize_context_t *c, 126eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t a, 127eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t b, 128eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *ab); 129693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 130693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* setup_masks() 13116c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Called during shape(). 132693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Shapers should use map to get feature masks and set on buffer. 1339f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Shapers may NOT modify characters. 1340736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 135693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 13616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*setup_masks) (const hb_ot_shape_plan_t *plan, 13716c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod hb_buffer_t *buffer, 13816c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod hb_font_t *font); 1392bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 140568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod hb_ot_shape_zero_width_marks_type_t zero_width_marks; 141568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 142865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod bool fallback_position; 14376f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod}; 14476f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod 145693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod#define HB_COMPLEX_SHAPER_IMPLEMENT(name) extern HB_INTERNAL const hb_ot_complex_shaper_t _hb_ot_complex_shaper_##name; 146693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad EsfahbodHB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS 147693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod#undef HB_COMPLEX_SHAPER_IMPLEMENT 148693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 149693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 150693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbodstatic inline const hb_ot_complex_shaper_t * 1519b37b4c5800b158f61602d2aba8a01349e24d251Behdad Esfahbodhb_ot_shape_complex_categorize (const hb_ot_shape_planner_t *planner) 15249baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod{ 1539b37b4c5800b158f61602d2aba8a01349e24d251Behdad Esfahbod switch ((hb_tag_t) planner->props.script) 15462879eebd9965179af8602ba29ac0a64a739b757Behdad Esfahbod { 155d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod default: 156693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod return &_hb_ot_complex_shaper_default; 157d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod 158c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 159317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-1.1 additions */ 16049baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod case HB_SCRIPT_ARABIC: 161d86a5b3c5752abcc791724035ba4115958e6b5e2Behdad Esfahbod case HB_SCRIPT_MONGOLIAN: 162b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SYRIAC: 163317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 164317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-5.0 additions */ 165317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod case HB_SCRIPT_NKO: 1663ba7bc14ea652d27639f34109e51a497a678a54aBehdad Esfahbod case HB_SCRIPT_PHAGS_PA: 167317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 168317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-6.0 additions */ 169317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod case HB_SCRIPT_MANDAIC: 170317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 1719e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod /* For Arabic script, use the Arabic shaper even if no OT script tag was found. 1729e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod * This is because we do fallback shaping for Arabic script (and not others). */ 1735ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod if (planner->map.chosen_script[0] != HB_OT_TAG_DEFAULT_SCRIPT || 1745ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod planner->props.script == HB_SCRIPT_ARABIC) 1755ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_arabic; 1765ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod else 1775ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_default; 17849baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 179c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 180c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod /* Unicode-1.1 additions */ 1813b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod case HB_SCRIPT_THAI: 1823b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod case HB_SCRIPT_LAO: 1833b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 184693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod return &_hb_ot_complex_shaper_thai; 1853b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 1863b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 187c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 188c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod /* ^--- Add new shapers here */ 189c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 190c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 191bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod#if 0 192bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Note: 193bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * 194bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * These disabled scripts are listed in ucd/IndicSyllabicCategory.txt, but according 195f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * to Martin Hosken and Jonathan Kew do not require complex shaping. 196f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * 197f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * TODO We should automate figuring out which scripts do not need complex shaping 198bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * 199bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * TODO We currently keep data for these scripts in our indic table. Need to fix the 200bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * generator to not do that. 201b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod */ 202bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 203cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 204bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Simple? */ 205cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 206cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.2 additions */ 207183224684a45d7dcd7d28510d4383a7a7cb3dff3Behdad Esfahbod case HB_SCRIPT_BUHID: 208bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_HANUNOO: 209cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 210cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.1 additions */ 211bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_SAURASHTRA: 212bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 213cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-6.0 additions */ 214cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BATAK: 215cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BRAHMI: 216cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 217cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 218bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Simple */ 219cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 220cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-1.1 additions */ 2215b1260909350bffa3e3d06da346f9f86ce651dbbBehdad Esfahbod /* These have their own shaper now. */ 222bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_LAO: 223cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_THAI: 224cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 225cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-2.0 additions */ 226cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TIBETAN: 227cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 228cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.2 additions */ 229bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAGALOG: 230bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAGBANWA: 231cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 232cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.0 additions */ 233cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_LIMBU: 234bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAI_LE: 235cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 236cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.1 additions */ 2370f80a89de99293ddbf0b8b815fe360677d057e38Behdad Esfahbod case HB_SCRIPT_KHAROSHTHI: 238cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_SYLOTI_NAGRI: 239cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 240cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.1 additions */ 241cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_KAYAH_LI: 242cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 243cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.2 additions */ 244bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAI_VIET: 245cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 246bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 247bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod#endif 248bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 249cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-1.1 additions */ 250bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_BENGALI: 251b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_DEVANAGARI: 252b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_GUJARATI: 253b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_GURMUKHI: 254b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_KANNADA: 255b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_MALAYALAM: 2567a4a848db27d1605195f677c9c8632cde558aa05Behdad Esfahbod case HB_SCRIPT_ORIYA: 257cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TAMIL: 258cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TELUGU: 259cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 260cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.0 additions */ 261b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SINHALA: 262cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 263cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.1 additions */ 264cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BUGINESE: 265cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_NEW_TAI_LUE: 266cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 267cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.0 additions */ 268cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BALINESE: 269cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 270cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.1 additions */ 271cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_CHAM: 272cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_LEPCHA: 273cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_REJANG: 274b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SUNDANESE: 275cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 276cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.2 additions */ 277cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_JAVANESE: 278cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_KAITHI: 27943149afbc0007ea075a7017c0e56056c3c0f3614Behdad Esfahbod case HB_SCRIPT_MEETEI_MAYEK: 280b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_TAI_THAM: 281cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 28243149afbc0007ea075a7017c0e56056c3c0f3614Behdad Esfahbod 283cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-6.1 additions */ 284cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_CHAKMA: 285cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_SHARADA: 286f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod case HB_SCRIPT_TAKRI: 287cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 2885676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod /* If the designer designed the font for the 'DFLT' script, 2895676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod * use the default shaper. Otherwise, use the Indic shaper. 2905676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod * Note that for some scripts, like New Tai Lue, there may 2915676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod * not be *any* GSUB/GPOS needed, so there may be no scripts 2925676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod * found! */ 2935676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod if (planner->map.chosen_script[0] == HB_TAG ('D','F','L','T')) 294851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod return &_hb_ot_complex_shaper_default; 2955676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod else 2965676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod return &_hb_ot_complex_shaper_indic; 297981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod 298981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod case HB_SCRIPT_KHMER: 29916c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod /* A number of Khmer fonts in the wild don't have a 'pref' feature, 30016c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * and as such won't shape properly via the Indic shaper; 30116c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * however, they typically have 'liga' / 'clig' features that implement 30216c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * the necessary "reordering" by means of ligature substitutions. 30316c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * So we send such pref-less fonts through the generic shaper instead. */ 30416c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod if (planner->map.found_script[0] && 305851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod hb_ot_layout_language_find_feature (planner->face, HB_OT_TAG_GSUB, 306851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod planner->map.script_index[0], 307851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod planner->map.language_index[0], 30816c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod HB_TAG ('p','r','e','f'), 30916c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod NULL)) 310981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod return &_hb_ot_complex_shaper_indic; 31116c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod else 31216c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod return &_hb_ot_complex_shaper_default; 313981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod 314981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod case HB_SCRIPT_MYANMAR: 31598628cac9f733f2674d6409954cddb7d0634c233Behdad Esfahbod /* For Myanmar, we only want to use the Myanmar shaper if the "new" script 3169e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod * tag is found. For "old" script tag we want to use the default shaper. */ 317981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod if (planner->map.chosen_script[0] == HB_TAG ('m','y','m','2')) 31898628cac9f733f2674d6409954cddb7d0634c233Behdad Esfahbod return &_hb_ot_complex_shaper_myanmar; 3195ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod else 3205ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_default; 32102cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod } 32202cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod} 32302cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod 32402cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod 32549baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod#endif /* HB_OT_SHAPE_COMPLEX_PRIVATE_HH */ 326