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comparison: gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh
gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh
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- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:834c0ed60374 |
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| 1 /* | |
| 2 * Copyright © 2012 Google, Inc. | |
| 3 * | |
| 4 * This is part of HarfBuzz, a text shaping library. | |
| 5 * | |
| 6 * Permission is hereby granted, without written agreement and without | |
| 7 * license or royalty fees, to use, copy, modify, and distribute this | |
| 8 * software and its documentation for any purpose, provided that the | |
| 9 * above copyright notice and the following two paragraphs appear in | |
| 10 * all copies of this software. | |
| 11 * | |
| 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | |
| 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
| 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | |
| 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | |
| 16 * DAMAGE. | |
| 17 * | |
| 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | |
| 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO | |
| 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 23 * | |
| 24 * Google Author(s): Behdad Esfahbod | |
| 25 */ | |
| 26 | |
| 27 #ifndef HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH | |
| 28 #define HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH | |
| 29 | |
| 30 #include "hb-private.hh" | |
| 31 | |
| 32 | |
| 33 #include "hb-ot-shape-complex-private.hh" | |
| 34 #include "hb-ot-shape-private.hh" /* XXX Remove */ | |
| 35 | |
| 36 | |
| 37 #define INDIC_TABLE_ELEMENT_TYPE uint16_t | |
| 38 | |
| 39 /* Cateories used in the OpenType spec: | |
| 40 * https://www.microsoft.com/typography/otfntdev/devanot/shaping.aspx | |
| 41 */ | |
| 42 /* Note: This enum is duplicated in the -machine.rl source file. | |
| 43 * Not sure how to avoid duplication. */ | |
| 44 enum indic_category_t { | |
| 45 OT_X = 0, | |
| 46 OT_C = 1, | |
| 47 OT_V = 2, | |
| 48 OT_N = 3, | |
| 49 OT_H = 4, | |
| 50 OT_ZWNJ = 5, | |
| 51 OT_ZWJ = 6, | |
| 52 OT_M = 7, | |
| 53 OT_SM = 8, | |
| 54 OT_VD = 9, | |
| 55 OT_A = 10, | |
| 56 OT_NBSP = 11, | |
| 57 OT_DOTTEDCIRCLE = 12, | |
| 58 OT_RS = 13, /* Register Shifter, used in Khmer OT spec. */ | |
| 59 OT_Coeng = 14, /* Khmer-style Virama. */ | |
| 60 OT_Repha = 15, /* Atomically-encoded logical or visual repha. */ | |
| 61 OT_Ra = 16, | |
| 62 OT_CM = 17, /* Consonant-Medial. */ | |
| 63 OT_Avag = 18, /* Avagraha. */ | |
| 64 OT_CM2 = 31 /* Consonant-Medial, second slot. */ | |
| 65 }; | |
| 66 | |
| 67 /* Visual positions in a syllable from left to right. */ | |
| 68 enum indic_position_t { | |
| 69 POS_START, | |
| 70 | |
| 71 POS_RA_TO_BECOME_REPH, | |
| 72 POS_PRE_M, | |
| 73 POS_PRE_C, | |
| 74 | |
| 75 POS_BASE_C, | |
| 76 POS_AFTER_MAIN, | |
| 77 | |
| 78 POS_ABOVE_C, | |
| 79 | |
| 80 POS_BEFORE_SUB, | |
| 81 POS_BELOW_C, | |
| 82 POS_AFTER_SUB, | |
| 83 | |
| 84 POS_BEFORE_POST, | |
| 85 POS_POST_C, | |
| 86 POS_AFTER_POST, | |
| 87 | |
| 88 POS_FINAL_C, | |
| 89 POS_SMVD, | |
| 90 | |
| 91 POS_END | |
| 92 }; | |
| 93 | |
| 94 /* Categories used in IndicSyllabicCategory.txt from UCD. */ | |
| 95 enum indic_syllabic_category_t { | |
| 96 INDIC_SYLLABIC_CATEGORY_OTHER = OT_X, | |
| 97 | |
| 98 INDIC_SYLLABIC_CATEGORY_AVAGRAHA = OT_Avag, | |
| 99 INDIC_SYLLABIC_CATEGORY_BINDU = OT_SM, | |
| 100 INDIC_SYLLABIC_CATEGORY_CONSONANT = OT_C, | |
| 101 INDIC_SYLLABIC_CATEGORY_CONSONANT_DEAD = OT_C, | |
| 102 INDIC_SYLLABIC_CATEGORY_CONSONANT_FINAL = OT_CM, | |
| 103 INDIC_SYLLABIC_CATEGORY_CONSONANT_HEAD_LETTER = OT_C, | |
| 104 INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL = OT_CM, | |
| 105 INDIC_SYLLABIC_CATEGORY_CONSONANT_PLACEHOLDER = OT_NBSP, | |
| 106 INDIC_SYLLABIC_CATEGORY_CONSONANT_SUBJOINED = OT_CM, | |
| 107 INDIC_SYLLABIC_CATEGORY_CONSONANT_REPHA = OT_Repha, | |
| 108 INDIC_SYLLABIC_CATEGORY_MODIFYING_LETTER = OT_X, | |
| 109 INDIC_SYLLABIC_CATEGORY_NUKTA = OT_N, | |
| 110 INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER = OT_RS, | |
| 111 INDIC_SYLLABIC_CATEGORY_TONE_LETTER = OT_X, | |
| 112 INDIC_SYLLABIC_CATEGORY_TONE_MARK = OT_N, | |
| 113 INDIC_SYLLABIC_CATEGORY_VIRAMA = OT_H, | |
| 114 INDIC_SYLLABIC_CATEGORY_VISARGA = OT_SM, | |
| 115 INDIC_SYLLABIC_CATEGORY_VOWEL = OT_V, | |
| 116 INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT = OT_M, | |
| 117 INDIC_SYLLABIC_CATEGORY_VOWEL_INDEPENDENT = OT_V | |
| 118 }; | |
| 119 | |
| 120 /* Categories used in IndicSMatraCategory.txt from UCD */ | |
| 121 enum indic_matra_category_t { | |
| 122 INDIC_MATRA_CATEGORY_NOT_APPLICABLE = POS_END, | |
| 123 | |
| 124 INDIC_MATRA_CATEGORY_LEFT = POS_PRE_C, | |
| 125 INDIC_MATRA_CATEGORY_TOP = POS_ABOVE_C, | |
| 126 INDIC_MATRA_CATEGORY_BOTTOM = POS_BELOW_C, | |
| 127 INDIC_MATRA_CATEGORY_RIGHT = POS_POST_C, | |
| 128 | |
| 129 /* These should resolve to the position of the last part of the split sequence. */ | |
| 130 INDIC_MATRA_CATEGORY_BOTTOM_AND_RIGHT = INDIC_MATRA_CATEGORY_RIGHT, | |
| 131 INDIC_MATRA_CATEGORY_LEFT_AND_RIGHT = INDIC_MATRA_CATEGORY_RIGHT, | |
| 132 INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM = INDIC_MATRA_CATEGORY_BOTTOM, | |
| 133 INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM_AND_RIGHT = INDIC_MATRA_CATEGORY_RIGHT, | |
| 134 INDIC_MATRA_CATEGORY_TOP_AND_LEFT = INDIC_MATRA_CATEGORY_TOP, | |
| 135 INDIC_MATRA_CATEGORY_TOP_AND_LEFT_AND_RIGHT = INDIC_MATRA_CATEGORY_RIGHT, | |
| 136 INDIC_MATRA_CATEGORY_TOP_AND_RIGHT = INDIC_MATRA_CATEGORY_RIGHT, | |
| 137 | |
| 138 INDIC_MATRA_CATEGORY_INVISIBLE = INDIC_MATRA_CATEGORY_NOT_APPLICABLE, | |
| 139 INDIC_MATRA_CATEGORY_OVERSTRUCK = POS_AFTER_MAIN, | |
| 140 INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT = POS_PRE_M | |
| 141 }; | |
| 142 | |
| 143 /* Note: We use ASSERT_STATIC_EXPR_ZERO() instead of ASSERT_STATIC_EXPR() and the comma operation | |
| 144 * because gcc fails to optimize the latter and fills the table in at runtime. */ | |
| 145 #define INDIC_COMBINE_CATEGORIES(S,M) \ | |
| 146 (ASSERT_STATIC_EXPR_ZERO (M == INDIC_MATRA_CATEGORY_NOT_APPLICABLE || (S == INDIC_SYLLABIC_CATEGORY_VIRAMA || S == INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT)) + \ | |
| 147 ASSERT_STATIC_EXPR_ZERO (S < 255 && M < 255) + \ | |
| 148 ((M << 8) | S)) | |
| 149 | |
| 150 HB_INTERNAL INDIC_TABLE_ELEMENT_TYPE | |
| 151 hb_indic_get_categories (hb_codepoint_t u); | |
| 152 | |
| 153 #endif /* HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH */ |
