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Diffstat (limited to 'tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-myanmar.c')
| -rw-r--r-- | tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-myanmar.c | 542 |
1 files changed, 0 insertions, 542 deletions
diff --git a/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-myanmar.c b/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-myanmar.c deleted file mode 100644 index 7cd82bb..0000000 --- a/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-myanmar.c +++ /dev/null @@ -1,542 +0,0 @@ -/* - * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) - * - * This is part of HarfBuzz, an OpenType Layout engine 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. - */ - -#include "harfbuzz-shaper.h" -#include "harfbuzz-shaper-private.h" - -#include <assert.h> -#include <stdio.h> - -enum MymrCharClassValues -{ - Mymr_CC_RESERVED = 0, - Mymr_CC_CONSONANT = 1, /* Consonant of type 1, that has subscript form */ - Mymr_CC_CONSONANT2 = 2, /* Consonant of type 2, that has no subscript form */ - Mymr_CC_NGA = 3, /* Consonant NGA */ - Mymr_CC_YA = 4, /* Consonant YA */ - Mymr_CC_RA = 5, /* Consonant RA */ - Mymr_CC_WA = 6, /* Consonant WA */ - Mymr_CC_HA = 7, /* Consonant HA */ - Mymr_CC_IND_VOWEL = 8, /* Independent vowel */ - Mymr_CC_ZERO_WIDTH_NJ_MARK = 9, /* Zero Width non joiner character (0x200C) */ - Mymr_CC_VIRAMA = 10, /* Subscript consonant combining character */ - Mymr_CC_PRE_VOWEL = 11, /* Dependent vowel, prebase (Vowel e) */ - Mymr_CC_BELOW_VOWEL = 12, /* Dependent vowel, prebase (Vowel u, uu) */ - Mymr_CC_ABOVE_VOWEL = 13, /* Dependent vowel, prebase (Vowel i, ii, ai) */ - Mymr_CC_POST_VOWEL = 14, /* Dependent vowel, prebase (Vowel aa) */ - Mymr_CC_SIGN_ABOVE = 15, - Mymr_CC_SIGN_BELOW = 16, - Mymr_CC_SIGN_AFTER = 17, - Mymr_CC_ZERO_WIDTH_J_MARK = 18, /* Zero width joiner character */ - Mymr_CC_COUNT = 19 /* This is the number of character classes */ -}; - -enum MymrCharClassFlags -{ - Mymr_CF_CLASS_MASK = 0x0000FFFF, - - Mymr_CF_CONSONANT = 0x01000000, /* flag to speed up comparing */ - Mymr_CF_MEDIAL = 0x02000000, /* flag to speed up comparing */ - Mymr_CF_IND_VOWEL = 0x04000000, /* flag to speed up comparing */ - Mymr_CF_DEP_VOWEL = 0x08000000, /* flag to speed up comparing */ - Mymr_CF_DOTTED_CIRCLE = 0x10000000, /* add a dotted circle if a character with this flag is the first in a syllable */ - Mymr_CF_VIRAMA = 0x20000000, /* flag to speed up comparing */ - - /* position flags */ - Mymr_CF_POS_BEFORE = 0x00080000, - Mymr_CF_POS_BELOW = 0x00040000, - Mymr_CF_POS_ABOVE = 0x00020000, - Mymr_CF_POS_AFTER = 0x00010000, - Mymr_CF_POS_MASK = 0x000f0000, - - Mymr_CF_AFTER_KINZI = 0x00100000 -}; - -/* Characters that get refrered to by name */ -enum MymrChar -{ - Mymr_C_SIGN_ZWNJ = 0x200C, - Mymr_C_SIGN_ZWJ = 0x200D, - Mymr_C_DOTTED_CIRCLE = 0x25CC, - Mymr_C_RA = 0x101B, - Mymr_C_YA = 0x101A, - Mymr_C_NGA = 0x1004, - Mymr_C_VOWEL_E = 0x1031, - Mymr_C_VIRAMA = 0x1039 -}; - -enum -{ - Mymr_xx = Mymr_CC_RESERVED, - Mymr_c1 = Mymr_CC_CONSONANT | Mymr_CF_CONSONANT | Mymr_CF_POS_BELOW, - Mymr_c2 = Mymr_CC_CONSONANT2 | Mymr_CF_CONSONANT, - Mymr_ng = Mymr_CC_NGA | Mymr_CF_CONSONANT | Mymr_CF_POS_ABOVE, - Mymr_ya = Mymr_CC_YA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_AFTER | Mymr_CF_AFTER_KINZI, - Mymr_ra = Mymr_CC_RA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BEFORE, - Mymr_wa = Mymr_CC_WA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BELOW, - Mymr_ha = Mymr_CC_HA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BELOW, - Mymr_id = Mymr_CC_IND_VOWEL | Mymr_CF_IND_VOWEL, - Mymr_vi = Mymr_CC_VIRAMA | Mymr_CF_VIRAMA | Mymr_CF_POS_ABOVE | Mymr_CF_DOTTED_CIRCLE, - Mymr_dl = Mymr_CC_PRE_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_BEFORE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_db = Mymr_CC_BELOW_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_BELOW | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_da = Mymr_CC_ABOVE_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_ABOVE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_dr = Mymr_CC_POST_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_AFTER | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_sa = Mymr_CC_SIGN_ABOVE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_POS_ABOVE | Mymr_CF_AFTER_KINZI, - Mymr_sb = Mymr_CC_SIGN_BELOW | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_POS_BELOW | Mymr_CF_AFTER_KINZI, - Mymr_sp = Mymr_CC_SIGN_AFTER | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI -}; - - -typedef int MymrCharClass; - - -static const MymrCharClass mymrCharClasses[] = -{ - Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_ng, Mymr_c1, Mymr_c1, Mymr_c1, - Mymr_c1, Mymr_c1, Mymr_c2, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, /* 1000 - 100F */ - Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, - Mymr_c1, Mymr_c1, Mymr_ya, Mymr_ra, Mymr_c1, Mymr_wa, Mymr_c1, Mymr_ha, /* 1010 - 101F */ - Mymr_c2, Mymr_c2, Mymr_xx, Mymr_id, Mymr_id, Mymr_id, Mymr_id, Mymr_id, - Mymr_xx, Mymr_id, Mymr_id, Mymr_xx, Mymr_dr, Mymr_da, Mymr_da, Mymr_db, /* 1020 - 102F */ - Mymr_db, Mymr_dl, Mymr_da, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_sa, Mymr_sb, - Mymr_sp, Mymr_vi, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1030 - 103F */ - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1040 - 104F */ - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1050 - 105F */ -}; - -static MymrCharClass -getMyanmarCharClass (HB_UChar16 ch) -{ - if (ch == Mymr_C_SIGN_ZWJ) - return Mymr_CC_ZERO_WIDTH_J_MARK; - - if (ch == Mymr_C_SIGN_ZWNJ) - return Mymr_CC_ZERO_WIDTH_NJ_MARK; - - if (ch < 0x1000 || ch > 0x105f) - return Mymr_CC_RESERVED; - - return mymrCharClasses[ch - 0x1000]; -} - -static const signed char mymrStateTable[][Mymr_CC_COUNT] = -{ -/* xx c1, c2 ng ya ra wa ha id zwnj vi dl db da dr sa sb sp zwj */ - { 1, 4, 4, 2, 4, 4, 4, 4, 24, 1, 27, 17, 18, 19, 20, 21, 1, 1, 4}, /* 0 - ground state */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 1 - exit state (or sp to the right of the syllable) */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3, 17, 18, 19, 20, 21, -1, -1, 4}, /* 2 - NGA */ - {-1, 4, 4, 4, 4, 4, 4, 4, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 3 - Virama after NGA */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, 17, 18, 19, 20, 21, 1, 1, -1}, /* 4 - Base consonant */ - {-2, 6, -2, -2, 7, 8, 9, 10, -2, 23, -2, -2, -2, -2, -2, -2, -2, -2, -2}, /* 5 - First virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 25, 17, 18, 19, 20, 21, -1, -1, -1}, /* 6 - c1 after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, /* 7 - ya after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, /* 8 - ra after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, /* 9 - wa after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, /* 10 - ha after virama */ - {-1, -1, -1, -1, 7, 8, 9, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 11 - Virama after NGA+zwj */ - {-2, -2, -2, -2, -2, -2, 13, 14, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, /* 12 - Second virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 15, 17, 18, 19, 20, 21, -1, -1, -1}, /* 13 - wa after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, /* 14 - ha after virama */ - {-2, -2, -2, -2, -2, -2, -2, 16, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, /* 15 - Third virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, /* 16 - ha after virama */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 20, 21, 1, 1, -1}, /* 17 - dl, Dependent vowel e */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, -1, 21, 1, 1, -1}, /* 18 - db, Dependent vowel u,uu */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1}, /* 19 - da, Dependent vowel i,ii,ai */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 22, -1, -1, -1, -1, -1, 1, 1, -1}, /* 20 - dr, Dependent vowel aa */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1}, /* 21 - sa, Sign anusvara */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 22 - atha */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1}, /* 23 - zwnj for atha */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1}, /* 24 - Independent vowel */ - {-2, -2, -2, -2, 26, 26, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, /* 25 - Virama after subscript consonant */ - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, 1, -1}, /* 26 - ra/ya after subscript consonant + virama */ - {-1, 6, -1, -1, 7, 8, 9, 10, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 - Virama after ground state */ -/* exit state -2 is for invalid order of medials and combination of invalids - with virama where virama should treat as start of next syllable - */ -}; - - - -/*#define MYANMAR_DEBUG */ -#ifdef MYANMAR_DEBUG -#define MMDEBUG qDebug -#else -#define MMDEBUG if(0) printf -#endif - -/* -// Given an input string of characters and a location in which to start looking -// calculate, using the state table, which one is the last character of the syllable -// that starts in the starting position. -*/ -static int myanmar_nextSyllableBoundary(const HB_UChar16 *s, int start, int end, HB_Bool *invalid) -{ - const HB_UChar16 *uc = s + start; - int state = 0; - int pos = start; - *invalid = FALSE; - - while (pos < end) { - MymrCharClass charClass = getMyanmarCharClass(*uc); - state = mymrStateTable[state][charClass & Mymr_CF_CLASS_MASK]; - if (pos == start) - *invalid = (HB_Bool)(charClass & Mymr_CF_DOTTED_CIRCLE); - - MMDEBUG("state[%d]=%d class=%8x (uc=%4x)", pos - start, state, charClass, *uc); - - if (state < 0) { - if (state < -1) - --pos; - break; - } - ++uc; - ++pos; - } - return pos; -} - -#ifndef NO_OPENTYPE -/* ###### might have to change order of above and below forms and substitutions, - but according to Unicode below comes before above */ -static const HB_OpenTypeFeature myanmar_features[] = { - { HB_MAKE_TAG('p', 'r', 'e', 'f'), PreFormProperty }, - { HB_MAKE_TAG('b', 'l', 'w', 'f'), BelowFormProperty }, - { HB_MAKE_TAG('a', 'b', 'v', 'f'), AboveFormProperty }, - { HB_MAKE_TAG('p', 's', 't', 'f'), PostFormProperty }, - { HB_MAKE_TAG('p', 'r', 'e', 's'), PreSubstProperty }, - { HB_MAKE_TAG('b', 'l', 'w', 's'), BelowSubstProperty }, - { HB_MAKE_TAG('a', 'b', 'v', 's'), AboveSubstProperty }, - { HB_MAKE_TAG('p', 's', 't', 's'), PostSubstProperty }, - { HB_MAKE_TAG('r', 'l', 'i', 'g'), CligProperty }, /* Myanmar1 uses this instead of the other features */ - { 0, 0 } -}; -#endif - - -/* -// Visual order before shaping should be: -// -// [Vowel Mark E] -// [Virama + Medial Ra] -// [Base] -// [Virama + Consonant] -// [Nga + Virama] (Kinzi) ### should probably come before post forms (medial ya) -// [Vowels] -// [Marks] -// -// This means that we can keep the logical order apart from having to -// move the pre vowel, medial ra and kinzi -*/ - -static HB_Bool myanmar_shape_syllable(HB_Bool openType, HB_ShaperItem *item, HB_Bool invalid) -{ - /* -// MMDEBUG("\nsyllable from %d len %d, str='%s'", item->item.pos, item->item.length, -// item->string->mid(item->from, item->length).toUtf8().data()); - */ - -#ifndef NO_OPENTYPE - const int availableGlyphs = item->num_glyphs; -#endif - const HB_UChar16 *uc = item->string + item->item.pos; - int vowel_e = -1; - int kinzi = -1; - int medial_ra = -1; - int base = -1; - int i; - int len = 0; - unsigned short reordered[32]; - unsigned char properties[32]; - enum { - AboveForm = 0x01, - PreForm = 0x02, - PostForm = 0x04, - BelowForm = 0x08 - }; - HB_Bool lastWasVirama = FALSE; - int basePos = -1; - - memset(properties, 0, 32*sizeof(unsigned char)); - - /* according to the table the max length of a syllable should be around 14 chars */ - assert(item->item.length < 32); - -#ifdef MYANMAR_DEBUG - printf("original:"); - for (i = 0; i < (int)item->item.length; i++) { - printf(" %d: %4x", i, uc[i]); - } -#endif - for (i = 0; i < (int)item->item.length; ++i) { - HB_UChar16 chr = uc[i]; - - if (chr == Mymr_C_VOWEL_E) { - vowel_e = i; - continue; - } - if (i == 0 - && chr == Mymr_C_NGA - && i + 2 < (int)item->item.length - && uc[i+1] == Mymr_C_VIRAMA) { - int mc = getMyanmarCharClass(uc[i+2]); - /*MMDEBUG("maybe kinzi: mc=%x", mc);*/ - if ((mc & Mymr_CF_CONSONANT) == Mymr_CF_CONSONANT) { - kinzi = i; - continue; - } - } - if (base >= 0 - && chr == Mymr_C_VIRAMA - && i + 1 < (int)item->item.length - && uc[i+1] == Mymr_C_RA) { - medial_ra = i; - continue; - } - if (base < 0) - base = i; - } - - MMDEBUG("\n base=%d, vowel_e=%d, kinzi=%d, medial_ra=%d", base, vowel_e, kinzi, medial_ra); - /* write vowel_e if found */ - if (vowel_e >= 0) { - reordered[0] = Mymr_C_VOWEL_E; - len = 1; - } - /* write medial_ra */ - if (medial_ra >= 0) { - reordered[len] = Mymr_C_VIRAMA; - reordered[len+1] = Mymr_C_RA; - properties[len] = PreForm; - properties[len+1] = PreForm; - len += 2; - } - - /* shall we add a dotted circle? - If in the position in which the base should be (first char in the string) there is - a character that has the Dotted circle flag (a character that cannot be a base) - then write a dotted circle */ - if (invalid) { - reordered[len] = C_DOTTED_CIRCLE; - ++len; - } - - /* copy the rest of the syllable to the output, inserting the kinzi - at the correct place */ - for (i = 0; i < (int)item->item.length; ++i) { - hb_uint16 chr = uc[i]; - MymrCharClass cc; - if (i == vowel_e) - continue; - if (i == medial_ra || i == kinzi) { - ++i; - continue; - } - - cc = getMyanmarCharClass(uc[i]); - if (kinzi >= 0 && i > base && (cc & Mymr_CF_AFTER_KINZI)) { - reordered[len] = Mymr_C_NGA; - reordered[len+1] = Mymr_C_VIRAMA; - properties[len-1] = AboveForm; - properties[len] = AboveForm; - len += 2; - kinzi = -1; - } - - if (lastWasVirama) { - int prop = 0; - switch(cc & Mymr_CF_POS_MASK) { - case Mymr_CF_POS_BEFORE: - prop = PreForm; - break; - case Mymr_CF_POS_BELOW: - prop = BelowForm; - break; - case Mymr_CF_POS_ABOVE: - prop = AboveForm; - break; - case Mymr_CF_POS_AFTER: - prop = PostForm; - break; - default: - break; - } - properties[len-1] = prop; - properties[len] = prop; - if(basePos >= 0 && basePos == len-2) - properties[len-2] = prop; - } - lastWasVirama = (chr == Mymr_C_VIRAMA); - if(i == base) - basePos = len; - - if ((chr != Mymr_C_SIGN_ZWNJ && chr != Mymr_C_SIGN_ZWJ) || !len) { - reordered[len] = chr; - ++len; - } - } - if (kinzi >= 0) { - reordered[len] = Mymr_C_NGA; - reordered[len+1] = Mymr_C_VIRAMA; - properties[len] = AboveForm; - properties[len+1] = AboveForm; - len += 2; - } - - if (!item->font->klass->convertStringToGlyphIndices(item->font, - reordered, len, - item->glyphs, &item->num_glyphs, - item->item.bidiLevel % 2)) - return FALSE; - - MMDEBUG("after shaping: len=%d", len); - for (i = 0; i < len; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - MMDEBUG(" %d: %4x property=%x", i, reordered[i], properties[i]); - } - - /* now we have the syllable in the right order, and can start running it through open type. */ - -#ifndef NO_OPENTYPE - if (openType) { - unsigned short logClusters[32]; - hb_uint32 where[32]; - - for (i = 0; i < len; ++i) - logClusters[i] = i; - - for (i = 0; i < len; ++i) { - where[i] = ~(PreSubstProperty - | BelowSubstProperty - | AboveSubstProperty - | PostSubstProperty - | CligProperty - | PositioningProperties); - if (properties[i] & PreForm) - where[i] &= ~PreFormProperty; - if (properties[i] & BelowForm) - where[i] &= ~BelowFormProperty; - if (properties[i] & AboveForm) - where[i] &= ~AboveFormProperty; - if (properties[i] & PostForm) - where[i] &= ~PostFormProperty; - } - - HB_OpenTypeShape(item, where); - if (!HB_OpenTypePosition(item, availableGlyphs, /*doLogClusters*/FALSE)) - return FALSE; - } else -#endif - { - MMDEBUG("Not using openType"); - HB_HeuristicPosition(item); - } - - item->attributes[0].clusterStart = TRUE; - return TRUE; -} - -HB_Bool HB_MyanmarShape(HB_ShaperItem *item) -{ - HB_Bool openType = FALSE; - unsigned short *logClusters = item->log_clusters; - - HB_ShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->item.pos; - int end = sstart + item->item.length; - int i = 0; - - assert(item->item.script == HB_Script_Myanmar); -#ifndef NO_OPENTYPE - openType = HB_SelectScript(item, myanmar_features); -#endif - - MMDEBUG("myanmar_shape: from %d length %d", item->item.pos, item->item.length); - while (sstart < end) { - HB_Bool invalid; - int send = myanmar_nextSyllableBoundary(item->string, sstart, end, &invalid); - MMDEBUG("syllable from %d, length %d, invalid=%s", sstart, send-sstart, - invalid ? "TRUE" : "FALSE"); - syllable.item.pos = sstart; - syllable.item.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!myanmar_shape_syllable(openType, &syllable, invalid)) { - MMDEBUG("syllable shaping failed, syllable requests %d glyphs", syllable.num_glyphs); - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - - /* fix logcluster array */ - MMDEBUG("syllable:"); - for (i = first_glyph; i < first_glyph + (int)syllable.num_glyphs; ++i) - MMDEBUG(" %d -> glyph %x", i, item->glyphs[i]); - MMDEBUG(" logclusters:"); - for (i = sstart; i < send; ++i) { - MMDEBUG(" %d -> glyph %d", i, first_glyph); - logClusters[i-item->item.pos] = first_glyph; - } - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; -} - -void HB_MyanmarAttributes(HB_Script script, const HB_UChar16 *text, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes) -{ - int end = from + len; - const HB_UChar16 *uc = text + from; - hb_uint32 i = 0; - HB_UNUSED(script); - attributes += from; - while (i < len) { - HB_Bool invalid; - hb_uint32 boundary = myanmar_nextSyllableBoundary(text, from+i, end, &invalid) - from; - - attributes[i].charStop = TRUE; - if (i) - attributes[i-1].lineBreakType = HB_Break; - - if (boundary > len-1) - boundary = len; - i++; - while (i < boundary) { - attributes[i].charStop = FALSE; - ++uc; - ++i; - } - assert(i == boundary); - } -} - |