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[Indic] Don't attach SM/VD to other characters

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This commit is contained in:
Behdad Esfahbod 2012-07-20 15:10:02 -04:00
parent efb4ad7356
commit 81202bd860
2 changed files with 24 additions and 17 deletions
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3
src/hb-ot-shape-complex-indic-private.hh
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@ -83,6 +83,8 @@ enum indic_category_t {
/* Visual positions in a syllable from left to right. */
enum indic_position_t {
POS_START,
POS_RA_TO_BECOME_REPH,
POS_PRE_M,
POS_PRE_C,
@ -102,6 +104,7 @@ enum indic_position_t {
POS_FINAL_C,
POS_SMVD,
POS_END
};

38
src/hb-ot-shape-complex-indic.cc
View File

@ -634,29 +634,32 @@ initial_reordering_consonant_syllable (const hb_ot_map_t *map, hb_buffer_t *buff
}
}
/* Attach ZWJ, ZWNJ, nukta, and halant to previous char to move with them. */
if (!indic_options ().uniscribe_bug_compatible)
/* Attach misc marks to previous char to move with them. */
{
/* Please update the Uniscribe branch when touching this! */
for (unsigned int i = start + 1; i < end; i++)
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_RS) | FLAG (OT_H))))
info[i].indic_position() = info[i - 1].indic_position();
} else {
/*
* Uniscribe doesn't move the Halant with Left Matra.
* TEST: U+092B,U+093F,U+094DE
*/
/* Please update the non-Uniscribe branch when touching this! */
for (unsigned int i = start + 1; i < end; i++)
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_RS) | FLAG (OT_H)))) {
info[i].indic_position() = info[i - 1].indic_position();
if (info[i].indic_category() == OT_H && info[i].indic_position() == POS_PRE_M)
indic_position_t last_pos = POS_START;
for (unsigned int i = start; i < end; i++)
{
if ((FLAG (info[i].indic_category()) & (JOINER_FLAGS | FLAG (OT_N) | FLAG (OT_RS) | HALANT_OR_COENG_FLAGS)))
{
info[i].indic_position() = last_pos;
if (unlikely (indic_options ().uniscribe_bug_compatible &&
info[i].indic_category() == OT_H &&
info[i].indic_position() == POS_PRE_M))
{
/*
* Uniscribe doesn't move the Halant with Left Matra.
* TEST: U+092B,U+093F,U+094DE
*/
for (unsigned int j = i; j > start; j--)
if (info[j - 1].indic_position() != POS_PRE_M) {
info[i].indic_position() = info[j - 1].indic_position();
break;
}
}
} else if (info[i].indic_position() != POS_SMVD) {
last_pos = (indic_position_t) info[i].indic_position();
}
}
}
/* Re-attach ZWJ, ZWNJ, and halant to next char, for after-base consonants. */
{
@ -666,7 +669,8 @@ initial_reordering_consonant_syllable (const hb_ot_map_t *map, hb_buffer_t *buff
last_halant = i;
else if (is_consonant (info[i])) {
for (unsigned int j = last_halant; j < i; j++)
info[j].indic_position() = info[i].indic_position();
if (info[j].indic_position() != POS_SMVD)
info[j].indic_position() = info[i].indic_position();
}
}