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) \ 553a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (sea) \ 563b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod HB_COMPLEX_SHAPER_IMPLEMENT (thai) \ 57d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod /* ^--- Add new shapers here */ 58d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod 59693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 60693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbodstruct hb_ot_complex_shaper_t 61693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod{ 62693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod char name[8]; 63693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 64693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* collect_features() 65693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Called during shape_plan(). 6616c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Shapers should use plan->map to add their features and callbacks. 670736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 68693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 6916c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*collect_features) (hb_ot_shape_planner_t *plan); 70693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 71693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* override_features() 72693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Called during shape_plan(). 7316c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Shapers should use plan->map to override features and add callbacks after 74693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * common features are added. 750736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 76693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 7716c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*override_features) (hb_ot_shape_planner_t *plan); 78693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 79a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 80a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod /* data_create() 81a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Called at the end of shape_plan(). 82a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Whatever shapers return will be accessible through plan->data later. 83a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * If NULL is returned, means a plan failure. 849f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod */ 85a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod void *(*data_create) (const hb_ot_shape_plan_t *plan); 86a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 87a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod /* data_destroy() 88a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * Called when the shape_plan is being destroyed. 89a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * plan->data is passed here for destruction. 90a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod * If NULL is returned, means a plan failure. 910736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 920736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 93a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod void (*data_destroy) (void *data); 94a8c6da90f4c6e8d27a3a1b758a55476776d9f750Behdad Esfahbod 959f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 969f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod /* preprocess_text() 979f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Called during shape(). 989f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Shapers can use to modify text before shaping starts. 990736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 1009f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod */ 1019f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod void (*preprocess_text) (const hb_ot_shape_plan_t *plan, 1029f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod hb_buffer_t *buffer, 1039f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod hb_font_t *font); 1049f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 1059f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod 106693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* normalization_preference() 10716c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Called during shape(). 1080736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 109693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 110693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod hb_ot_shape_normalization_mode_t 1110736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod (*normalization_preference) (const hb_segment_properties_t *props); 1120736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod 1130736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod /* decompose() 1140736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * Called during shape()'s normalization. 1150736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 1160736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 117eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod bool (*decompose) (const hb_ot_shape_normalize_context_t *c, 118eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t ab, 119eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *a, 120eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *b); 1210736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod 1220736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod /* compose() 1230736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * Called during shape()'s normalization. 1240736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 1250736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod */ 126eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod bool (*compose) (const hb_ot_shape_normalize_context_t *c, 127eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t a, 128eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t b, 129eba312c8d1b2bbe8cb9b6414e843e78d2c521aa4Behdad Esfahbod hb_codepoint_t *ab); 130693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 131693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod /* setup_masks() 13216c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod * Called during shape(). 133693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod * Shapers should use map to get feature masks and set on buffer. 1349f9f04c2229227bb0712166e824157bbbf5cef80Behdad Esfahbod * Shapers may NOT modify characters. 1350736915b8ed789a209205fec762997af3a8af89cBehdad Esfahbod * May be NULL. 136693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod */ 13716c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod void (*setup_masks) (const hb_ot_shape_plan_t *plan, 13816c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod hb_buffer_t *buffer, 13916c6a27b4bffc19026944c7bea9cf0a3a8ff1d8fBehdad Esfahbod hb_font_t *font); 1402bc3b9a616cedbc56ff4a915f9e3439ff3a6bf13Behdad Esfahbod 141568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod hb_ot_shape_zero_width_marks_type_t zero_width_marks; 142568000274c8edb5f41bc4f876ce21fcc8bdaeed8Behdad Esfahbod 143865745b5b87236651f5663cae3461db9cb505eedBehdad Esfahbod bool fallback_position; 14476f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod}; 14576f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod 146693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod#define HB_COMPLEX_SHAPER_IMPLEMENT(name) extern HB_INTERNAL const hb_ot_complex_shaper_t _hb_ot_complex_shaper_##name; 147693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad EsfahbodHB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS 148693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod#undef HB_COMPLEX_SHAPER_IMPLEMENT 149693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 150693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod 151693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbodstatic inline const hb_ot_complex_shaper_t * 1529b37b4c5800b158f61602d2aba8a01349e24d251Behdad Esfahbodhb_ot_shape_complex_categorize (const hb_ot_shape_planner_t *planner) 15349baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod{ 1549b37b4c5800b158f61602d2aba8a01349e24d251Behdad Esfahbod switch ((hb_tag_t) planner->props.script) 15562879eebd9965179af8602ba29ac0a64a739b757Behdad Esfahbod { 156d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod default: 157693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod return &_hb_ot_complex_shaper_default; 158d05dded1676924e8894c90f7a7c3527b492bcdffBehdad Esfahbod 159c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 160317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-1.1 additions */ 16149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod case HB_SCRIPT_ARABIC: 162d86a5b3c5752abcc791724035ba4115958e6b5e2Behdad Esfahbod case HB_SCRIPT_MONGOLIAN: 163b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SYRIAC: 164317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 165317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-5.0 additions */ 166317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod case HB_SCRIPT_NKO: 1673ba7bc14ea652d27639f34109e51a497a678a54aBehdad Esfahbod case HB_SCRIPT_PHAGS_PA: 168317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 169317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod /* Unicode-6.0 additions */ 170317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod case HB_SCRIPT_MANDAIC: 171317b9504d7a4faa70dcf21e5c2aff4792dbd201aBehdad Esfahbod 1729e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod /* For Arabic script, use the Arabic shaper even if no OT script tag was found. 1739e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod * This is because we do fallback shaping for Arabic script (and not others). */ 1745ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod if (planner->map.chosen_script[0] != HB_OT_TAG_DEFAULT_SCRIPT || 1755ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod planner->props.script == HB_SCRIPT_ARABIC) 1765ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_arabic; 1775ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod else 1785ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_default; 17949baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod 180c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 181c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod /* Unicode-1.1 additions */ 1823b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod case HB_SCRIPT_THAI: 1833b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod case HB_SCRIPT_LAO: 1843b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 185693918ef8541014a5ef7dfb91c6ea0ae36d9c368Behdad Esfahbod return &_hb_ot_complex_shaper_thai; 1863b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 1873b26f96ebe859570d14c6902afc23462bca40712Behdad Esfahbod 188c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 189c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod /* ^--- Add new shapers here */ 190c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 191c9a841f4452921c5361b8f5697bbff7736ce60cdBehdad Esfahbod 192bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod#if 0 193bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Note: 194bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * 195bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * These disabled scripts are listed in ucd/IndicSyllabicCategory.txt, but according 196f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * to Martin Hosken and Jonathan Kew do not require complex shaping. 197f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * 198f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod * TODO We should automate figuring out which scripts do not need complex shaping 199bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * 200bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * TODO We currently keep data for these scripts in our indic table. Need to fix the 201bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod * generator to not do that. 202b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod */ 203bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 204cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 205bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Simple? */ 206cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 207cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.2 additions */ 208183224684a45d7dcd7d28510d4383a7a7cb3dff3Behdad Esfahbod case HB_SCRIPT_BUHID: 209bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_HANUNOO: 210cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 211cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.1 additions */ 212bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_SAURASHTRA: 213bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 214cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-6.0 additions */ 215cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BATAK: 216cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BRAHMI: 217cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 218cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 219bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod /* Simple */ 220cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 221cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-1.1 additions */ 2225b1260909350bffa3e3d06da346f9f86ce651dbbBehdad Esfahbod /* These have their own shaper now. */ 223bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_LAO: 224cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_THAI: 225cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 226cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-2.0 additions */ 227cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TIBETAN: 228cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 229cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.2 additions */ 230bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAGALOG: 231bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAGBANWA: 232cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 233cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.0 additions */ 234cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_LIMBU: 235bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAI_LE: 236cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 237cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.1 additions */ 2380f80a89de99293ddbf0b8b815fe360677d057e38Behdad Esfahbod case HB_SCRIPT_KHAROSHTHI: 239cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_SYLOTI_NAGRI: 240cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 241cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.1 additions */ 242cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_KAYAH_LI: 243cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 244cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.2 additions */ 245bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_TAI_VIET: 246cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 247bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 248bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod#endif 249bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod 250cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-1.1 additions */ 251bc187e5ac7433f5561b0e97e8c62172c73883f3fBehdad Esfahbod case HB_SCRIPT_BENGALI: 252b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_DEVANAGARI: 253b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_GUJARATI: 254b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_GURMUKHI: 255b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_KANNADA: 256b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_MALAYALAM: 2577a4a848db27d1605195f677c9c8632cde558aa05Behdad Esfahbod case HB_SCRIPT_ORIYA: 258cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TAMIL: 259cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_TELUGU: 260cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 261cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-3.0 additions */ 262b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SINHALA: 263cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 264cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-4.1 additions */ 265cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_BUGINESE: 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_LEPCHA: 272cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_REJANG: 273b9ddbd55930228422e82b34a141ad1b6093f5376Behdad Esfahbod case HB_SCRIPT_SUNDANESE: 274cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 275cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-5.2 additions */ 276cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_JAVANESE: 277cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_KAITHI: 27843149afbc0007ea075a7017c0e56056c3c0f3614Behdad Esfahbod case HB_SCRIPT_MEETEI_MAYEK: 279cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 2803a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod /* Unicode-6.0 additions */ 28143149afbc0007ea075a7017c0e56056c3c0f3614Behdad Esfahbod 282cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod /* Unicode-6.1 additions */ 283cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_CHAKMA: 284cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod case HB_SCRIPT_SHARADA: 285f91136cb528e298651c4a8a8a1d6dc54136e09ceBehdad Esfahbod case HB_SCRIPT_TAKRI: 286cad3821f3d5b68d490b0728bd37bd57428ec809cBehdad Esfahbod 2875676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod /* If the designer designed the font for the 'DFLT' script, 2885676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod * use the default shaper. Otherwise, use the Indic shaper. 2893a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod * Note that for some simple scripts, there may not be *any* 2903a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod * GSUB/GPOS needed, so there may be no scripts found! */ 2915676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod if (planner->map.chosen_script[0] == HB_TAG ('D','F','L','T')) 292851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod return &_hb_ot_complex_shaper_default; 2935676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod else 2945676d5d52784e16068ae483103d59111a8081854Behdad Esfahbod return &_hb_ot_complex_shaper_indic; 295981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod 296981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod case HB_SCRIPT_KHMER: 29716c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod /* A number of Khmer fonts in the wild don't have a 'pref' feature, 29816c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * and as such won't shape properly via the Indic shaper; 29916c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * however, they typically have 'liga' / 'clig' features that implement 30016c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * the necessary "reordering" by means of ligature substitutions. 30116c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod * So we send such pref-less fonts through the generic shaper instead. */ 30216c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod if (planner->map.found_script[0] && 303851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod hb_ot_layout_language_find_feature (planner->face, HB_OT_TAG_GSUB, 304851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod planner->map.script_index[0], 305851784f8372004e0a40b698c0cdc2d7db8629aa2Behdad Esfahbod planner->map.language_index[0], 30616c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod HB_TAG ('p','r','e','f'), 30716c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod NULL)) 308981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod return &_hb_ot_complex_shaper_indic; 30916c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod else 31016c914c2a6efeb6999054333985b1f711e33cf94Behdad Esfahbod return &_hb_ot_complex_shaper_default; 311981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod 312981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod case HB_SCRIPT_MYANMAR: 31398628cac9f733f2674d6409954cddb7d0634c233Behdad Esfahbod /* For Myanmar, we only want to use the Myanmar shaper if the "new" script 3149e92978c8aa3d3cdab4d20c81698c56adbb3dbddBehdad Esfahbod * tag is found. For "old" script tag we want to use the default shaper. */ 315981748cb2e9b48b77177b19ec1f972cab7afda89Behdad Esfahbod if (planner->map.chosen_script[0] == HB_TAG ('m','y','m','2')) 31698628cac9f733f2674d6409954cddb7d0634c233Behdad Esfahbod return &_hb_ot_complex_shaper_myanmar; 3175ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod else 3185ab3855f8106158ee7e68797e8c35e63e9216e5dBehdad Esfahbod return &_hb_ot_complex_shaper_default; 3193a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod 3203a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod /* Unicode-4.1 additions */ 3213a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod case HB_SCRIPT_NEW_TAI_LUE: 3223a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod 3233a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod /* Unicode-5.1 additions */ 3243a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod case HB_SCRIPT_CHAM: 3253a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod 3263a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod /* Unicode-5.2 additions */ 3273a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod case HB_SCRIPT_TAI_THAM: 3283a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod 3293a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod /* If the designer designed the font for the 'DFLT' script, 3303a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod * use the default shaper. Otherwise, use the Indic shaper. 3313a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod * Note that for some simple scripts, there may not be *any* 3323a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod * GSUB/GPOS needed, so there may be no scripts found! */ 3333a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod if (planner->map.chosen_script[0] == HB_TAG ('D','F','L','T')) 3343a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod return &_hb_ot_complex_shaper_default; 3353a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod else 3363a83d33ec0b1be6f5992816ff5ebb0f43c8dff00Behdad Esfahbod return &_hb_ot_complex_shaper_sea; 33702cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod } 33802cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod} 33902cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod 34002cdf743c2ec345a44d4fcf865594b6ac13fccd0Behdad Esfahbod 34149baa1f69efb0e3c62e45bd59dd88459a84bf390Behdad Esfahbod#endif /* HB_OT_SHAPE_COMPLEX_PRIVATE_HH */ 342