diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-shape-complex-myanmar.cc')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-shape-complex-myanmar.cc | 545 |
1 files changed, 0 insertions, 545 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-shape-complex-myanmar.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-shape-complex-myanmar.cc deleted file mode 100644 index ff13bdd1ebe..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-shape-complex-myanmar.cc +++ /dev/null @@ -1,545 +0,0 @@ -/* - * Copyright © 2011,2012,2013 Google, Inc. - * - * This is part of HarfBuzz, a text shaping library. - * - * Permission is hereby granted, without written agreement and without - * license or royalty fees, to use, copy, modify, and distribute this - * software and its documentation for any purpose, provided that the - * above copyright notice and the following two paragraphs appear in - * all copies of this software. - * - * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN - * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - * - * Google Author(s): Behdad Esfahbod - */ - -#include "hb-ot-shape-complex-indic-private.hh" - -/* buffer var allocations */ -#define myanmar_category() complex_var_u8_0() /* myanmar_category_t */ -#define myanmar_position() complex_var_u8_1() /* myanmar_position_t */ - - -/* - * Myanmar shaper. - */ - -static const hb_tag_t -basic_features[] = -{ - /* - * Basic features. - * These features are applied in order, one at a time, after initial_reordering. - */ - HB_TAG('r','p','h','f'), - HB_TAG('p','r','e','f'), - HB_TAG('b','l','w','f'), - HB_TAG('p','s','t','f'), -}; -static const hb_tag_t -other_features[] = -{ - /* - * Other features. - * These features are applied all at once, after final_reordering. - */ - HB_TAG('p','r','e','s'), - HB_TAG('a','b','v','s'), - HB_TAG('b','l','w','s'), - HB_TAG('p','s','t','s'), - /* Positioning features, though we don't care about the types. */ - HB_TAG('d','i','s','t'), -}; - -static void -setup_syllables (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer); -static void -initial_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer); -static void -final_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer); - -static void -collect_features_myanmar (hb_ot_shape_planner_t *plan) -{ - hb_ot_map_builder_t *map = &plan->map; - - /* Do this before any lookups have been applied. */ - map->add_gsub_pause (setup_syllables); - - map->add_global_bool_feature (HB_TAG('l','o','c','l')); - /* The Indic specs do not require ccmp, but we apply it here since if - * there is a use of it, it's typically at the beginning. */ - map->add_global_bool_feature (HB_TAG('c','c','m','p')); - - - map->add_gsub_pause (initial_reordering); - for (unsigned int i = 0; i < ARRAY_LENGTH (basic_features); i++) - { - map->add_feature (basic_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ); - map->add_gsub_pause (NULL); - } - map->add_gsub_pause (final_reordering); - for (unsigned int i = 0; i < ARRAY_LENGTH (other_features); i++) - map->add_feature (other_features[i], 1, F_GLOBAL | F_MANUAL_ZWJ); -} - -static void -override_features_myanmar (hb_ot_shape_planner_t *plan) -{ - plan->map.add_feature (HB_TAG('l','i','g','a'), 0, F_GLOBAL); - - /* - * Note: - * - * Spec says 'mark' is used, and the mmrtext.ttf font from - * Windows 8 has lookups for it. But testing suggests that - * Windows 8 Uniscribe is NOT applying it. It *is* applying - * 'mkmk' however. - */ - if (hb_options ().uniscribe_bug_compatible) - plan->map.add_feature (HB_TAG('m','a','r','k'), 0, F_GLOBAL); -} - - -enum syllable_type_t { - consonant_syllable, - broken_cluster, - non_myanmar_cluster, -}; - -#include "hb-ot-shape-complex-myanmar-machine.hh" - - -/* Note: This enum is duplicated in the -machine.rl source file. - * Not sure how to avoid duplication. */ -enum myanmar_category_t { - OT_As = 18, /* Asat */ - OT_D = 19, /* Digits except zero */ - OT_D0 = 20, /* Digit zero */ - OT_DB = OT_N, /* Dot below */ - OT_GB = OT_DOTTEDCIRCLE, - OT_MH = 21, /* Various consonant medial types */ - OT_MR = 22, /* Various consonant medial types */ - OT_MW = 23, /* Various consonant medial types */ - OT_MY = 24, /* Various consonant medial types */ - OT_PT = 25, /* Pwo and other tones */ - OT_VAbv = 26, - OT_VBlw = 27, - OT_VPre = 28, - OT_VPst = 29, - OT_VS = 30 /* Variation selectors */ -}; - - -static inline bool -is_one_of (const hb_glyph_info_t &info, unsigned int flags) -{ - /* If it ligated, all bets are off. */ - if (is_a_ligature (info)) return false; - return !!(FLAG (info.myanmar_category()) & flags); -} - -/* Note: - * - * We treat Vowels and placeholders as if they were consonants. This is safe because Vowels - * cannot happen in a consonant syllable. The plus side however is, we can call the - * consonant syllable logic from the vowel syllable function and get it all right! */ -#define CONSONANT_FLAGS (FLAG (OT_C) | FLAG (OT_CM) | FLAG (OT_Ra) | FLAG (OT_V) | FLAG (OT_NBSP) | FLAG (OT_GB)) -static inline bool -is_consonant (const hb_glyph_info_t &info) -{ - return is_one_of (info, CONSONANT_FLAGS); -} - - -static inline void -set_myanmar_properties (hb_glyph_info_t &info) -{ - hb_codepoint_t u = info.codepoint; - unsigned int type = hb_indic_get_categories (u); - indic_category_t cat = (indic_category_t) (type & 0x7F); - indic_position_t pos = (indic_position_t) (type >> 8); - - /* Myanmar - * http://www.microsoft.com/typography/OpenTypeDev/myanmar/intro.htm#analyze - */ - if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xFE00, 0xFE0F))) - cat = (indic_category_t) OT_VS; - else if (unlikely (u == 0x200C)) cat = (indic_category_t) OT_ZWNJ; - else if (unlikely (u == 0x200D)) cat = (indic_category_t) OT_ZWJ; - - switch (u) - { - case 0x002D: case 0x00A0: case 0x00D7: case 0x2012: - case 0x2013: case 0x2014: case 0x2015: case 0x2022: - case 0x25CC: case 0x25FB: case 0x25FC: case 0x25FD: - case 0x25FE: - cat = (indic_category_t) OT_GB; - break; - - case 0x1004: case 0x101B: case 0x105A: - cat = (indic_category_t) OT_Ra; - break; - - case 0x1032: case 0x1036: - cat = (indic_category_t) OT_A; - break; - - case 0x103A: - cat = (indic_category_t) OT_As; - break; - - case 0x1041: case 0x1042: case 0x1043: case 0x1044: - case 0x1045: case 0x1046: case 0x1047: case 0x1048: - case 0x1049: case 0x1090: case 0x1091: case 0x1092: - case 0x1093: case 0x1094: case 0x1095: case 0x1096: - case 0x1097: case 0x1098: case 0x1099: - cat = (indic_category_t) OT_D; - break; - - case 0x1040: - cat = (indic_category_t) OT_D; /* XXX The spec says D0, but Uniscribe doesn't seem to do. */ - break; - - case 0x103E: case 0x1060: - cat = (indic_category_t) OT_MH; - break; - - case 0x103C: - cat = (indic_category_t) OT_MR; - break; - - case 0x103D: case 0x1082: - cat = (indic_category_t) OT_MW; - break; - - case 0x103B: case 0x105E: case 0x105F: - cat = (indic_category_t) OT_MY; - break; - - case 0x1063: case 0x1064: case 0x1069: case 0x106A: - case 0x106B: case 0x106C: case 0x106D: case 0xAA7B: - cat = (indic_category_t) OT_PT; - break; - - case 0x1038: case 0x1087: case 0x1088: case 0x1089: - case 0x108A: case 0x108B: case 0x108C: case 0x108D: - case 0x108F: case 0x109A: case 0x109B: case 0x109C: - cat = (indic_category_t) OT_SM; - break; - } - - if (cat == OT_M) - { - switch ((int) pos) - { - case POS_PRE_C: cat = (indic_category_t) OT_VPre; - pos = POS_PRE_M; break; - case POS_ABOVE_C: cat = (indic_category_t) OT_VAbv; break; - case POS_BELOW_C: cat = (indic_category_t) OT_VBlw; break; - case POS_POST_C: cat = (indic_category_t) OT_VPst; break; - } - } - - info.myanmar_category() = (myanmar_category_t) cat; - info.myanmar_position() = pos; -} - - - -static void -setup_masks_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_buffer_t *buffer, - hb_font_t *font HB_UNUSED) -{ - HB_BUFFER_ALLOCATE_VAR (buffer, myanmar_category); - HB_BUFFER_ALLOCATE_VAR (buffer, myanmar_position); - - /* We cannot setup masks here. We save information about characters - * and setup masks later on in a pause-callback. */ - - unsigned int count = buffer->len; - for (unsigned int i = 0; i < count; i++) - set_myanmar_properties (buffer->info[i]); -} - -static void -setup_syllables (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_font_t *font HB_UNUSED, - hb_buffer_t *buffer) -{ - find_syllables (buffer); -} - -static int -compare_myanmar_order (const hb_glyph_info_t *pa, const hb_glyph_info_t *pb) -{ - int a = pa->myanmar_position(); - int b = pb->myanmar_position(); - - return a < b ? -1 : a == b ? 0 : +1; -} - - -/* Rules from: - * http://www.microsoft.com/typography/OpenTypeDev/myanmar/intro.htm */ - -static void -initial_reordering_consonant_syllable (const hb_ot_shape_plan_t *plan, - hb_face_t *face, - hb_buffer_t *buffer, - unsigned int start, unsigned int end) -{ - hb_glyph_info_t *info = buffer->info; - - unsigned int base = end; - bool has_reph = false; - - { - unsigned int limit = start; - if (start + 3 <= end && - info[start ].myanmar_category() == OT_Ra && - info[start+1].myanmar_category() == OT_As && - info[start+2].myanmar_category() == OT_H) - { - limit += 3; - base = start; - has_reph = true; - } - - { - if (!has_reph) - base = limit; - - for (unsigned int i = limit; i < end; i++) - if (is_consonant (info[i])) - { - base = i; - break; - } - } - } - - /* Reorder! */ - { - unsigned int i = start; - for (; i < start + (has_reph ? 3 : 0); i++) - info[i].myanmar_position() = POS_AFTER_MAIN; - for (; i < base; i++) - info[i].myanmar_position() = POS_PRE_C; - if (i < end) - { - info[i].myanmar_position() = POS_BASE_C; - i++; - } - indic_position_t pos = POS_AFTER_MAIN; - /* The following loop may be ugly, but it implements all of - * Myanmar reordering! */ - for (; i < end; i++) - { - if (info[i].myanmar_category() == OT_MR) /* Pre-base reordering */ - { - info[i].myanmar_position() = POS_PRE_C; - continue; - } - if (info[i].myanmar_position() < POS_BASE_C) /* Left matra */ - { - continue; - } - - if (pos == POS_AFTER_MAIN && info[i].myanmar_category() == OT_VBlw) - { - pos = POS_BELOW_C; - info[i].myanmar_position() = pos; - continue; - } - - if (pos == POS_BELOW_C && info[i].myanmar_category() == OT_A) - { - info[i].myanmar_position() = POS_BEFORE_SUB; - continue; - } - if (pos == POS_BELOW_C && info[i].myanmar_category() == OT_VBlw) - { - info[i].myanmar_position() = pos; - continue; - } - if (pos == POS_BELOW_C && info[i].myanmar_category() != OT_A) - { - pos = POS_AFTER_SUB; - info[i].myanmar_position() = pos; - continue; - } - info[i].myanmar_position() = pos; - } - } - - buffer->merge_clusters (start, end); - /* Sit tight, rock 'n roll! */ - hb_bubble_sort (info + start, end - start, compare_myanmar_order); -} - -static void -initial_reordering_broken_cluster (const hb_ot_shape_plan_t *plan, - hb_face_t *face, - hb_buffer_t *buffer, - unsigned int start, unsigned int end) -{ - /* We already inserted dotted-circles, so just call the consonant_syllable. */ - initial_reordering_consonant_syllable (plan, face, buffer, start, end); -} - -static void -initial_reordering_non_myanmar_cluster (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_face_t *face HB_UNUSED, - hb_buffer_t *buffer HB_UNUSED, - unsigned int start HB_UNUSED, unsigned int end HB_UNUSED) -{ - /* Nothing to do right now. If we ever switch to using the output - * buffer in the reordering process, we'd need to next_glyph() here. */ -} - - -static void -initial_reordering_syllable (const hb_ot_shape_plan_t *plan, - hb_face_t *face, - hb_buffer_t *buffer, - unsigned int start, unsigned int end) -{ - syllable_type_t syllable_type = (syllable_type_t) (buffer->info[start].syllable() & 0x0F); - switch (syllable_type) { - case consonant_syllable: initial_reordering_consonant_syllable (plan, face, buffer, start, end); return; - case broken_cluster: initial_reordering_broken_cluster (plan, face, buffer, start, end); return; - case non_myanmar_cluster: initial_reordering_non_myanmar_cluster (plan, face, buffer, start, end); return; - } -} - -static inline void -insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED, - hb_font_t *font, - hb_buffer_t *buffer) -{ - /* Note: This loop is extra overhead, but should not be measurable. */ - bool has_broken_syllables = false; - unsigned int count = buffer->len; - for (unsigned int i = 0; i < count; i++) - if ((buffer->info[i].syllable() & 0x0F) == broken_cluster) { - has_broken_syllables = true; - break; - } - if (likely (!has_broken_syllables)) - return; - - - hb_codepoint_t dottedcircle_glyph; - if (!font->get_glyph (0x25CC, 0, &dottedcircle_glyph)) - return; - - hb_glyph_info_t dottedcircle = {0}; - dottedcircle.codepoint = 0x25CC; - set_myanmar_properties (dottedcircle); - dottedcircle.codepoint = dottedcircle_glyph; - - buffer->clear_output (); - - buffer->idx = 0; - unsigned int last_syllable = 0; - while (buffer->idx < buffer->len) - { - unsigned int syllable = buffer->cur().syllable(); - syllable_type_t syllable_type = (syllable_type_t) (syllable & 0x0F); - if (unlikely (last_syllable != syllable && syllable_type == broken_cluster)) - { - last_syllable = syllable; - - hb_glyph_info_t info = dottedcircle; - info.cluster = buffer->cur().cluster; - info.mask = buffer->cur().mask; - info.syllable() = buffer->cur().syllable(); - - buffer->output_info (info); - } - else - buffer->next_glyph (); - } - - buffer->swap_buffers (); -} - -static void -initial_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font, - hb_buffer_t *buffer) -{ - insert_dotted_circles (plan, font, buffer); - - hb_glyph_info_t *info = buffer->info; - unsigned int count = buffer->len; - if (unlikely (!count)) return; - unsigned int last = 0; - unsigned int last_syllable = info[0].syllable(); - for (unsigned int i = 1; i < count; i++) - if (last_syllable != info[i].syllable()) { - initial_reordering_syllable (plan, font->face, buffer, last, i); - last = i; - last_syllable = info[last].syllable(); - } - initial_reordering_syllable (plan, font->face, buffer, last, count); -} - -static void -final_reordering (const hb_ot_shape_plan_t *plan, - hb_font_t *font HB_UNUSED, - hb_buffer_t *buffer) -{ - hb_glyph_info_t *info = buffer->info; - unsigned int count = buffer->len; - - /* Zero syllables now... */ - for (unsigned int i = 0; i < count; i++) - info[i].syllable() = 0; - - HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_category); - HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_position); -} - - -static hb_ot_shape_normalization_mode_t -normalization_preference_myanmar (const hb_segment_properties_t *props HB_UNUSED) -{ - return HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT; -} - - -const hb_ot_complex_shaper_t _hb_ot_complex_shaper_myanmar = -{ - "myanmar", - collect_features_myanmar, - override_features_myanmar, - NULL, /* data_create */ - NULL, /* data_destroy */ - NULL, /* preprocess_text */ - normalization_preference_myanmar, - NULL, /* decompose */ - NULL, /* compose */ - setup_masks_myanmar, - HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF, - false, /* fallback_position */ -}; |