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].graphemeBoundary = TRUE;
attributes[i].lineBreak = TRUE;
if (boundary > len-1)
boundary = len;
i++;
while (i < boundary) {
attributes[i].graphemeBoundary = FALSE;
++uc;
++i;
}
assert(i == boundary);
}
}
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;
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);
}
}
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;
}
