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[aat] Generate finegrained unsafe-to-break in state-machine!

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Neato.
This commit is contained in:
Behdad Esfahbod 2018-01-11 11:49:07 +01:00
parent 994eb7744c
commit 94644d7ea4
1 changed files with 9 additions and 2 deletions
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11
src/hb-aat-layout-morx-table.hh
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@ -57,16 +57,19 @@ struct RearrangementSubtable
unsigned int num_glyphs = c->face->get_num_glyphs ();
unsigned int state = 0;
unsigned int last_zero = 0;
unsigned int last_zero_before_start = 0;
unsigned int start = 0;
unsigned int end = 0;
hb_glyph_info_t *info = c->buffer->info;
unsigned int count = c->buffer->len;
c->buffer->unsafe_to_break (0, count); /* TODO Improve. */
for (unsigned int i = 0; i < count; i++)
{
if (!state)
last_zero = i;
unsigned int klass = machine.get_class (info[i].codepoint, num_glyphs);
const Entry<void> *entry = machine.get_entry (state, klass);
if (unlikely (!entry))
@ -75,7 +78,10 @@ struct RearrangementSubtable
unsigned int flags = entry->flags;
if (flags & MarkFirst)
{
start = i;
last_zero_before_start = last_zero;
}
if (flags & MarkLast)
end = i + 1;
@ -114,6 +120,7 @@ struct RearrangementSubtable
if (end - start >= l + r)
{
c->buffer->unsafe_to_break (last_zero_before_start, i + 1);
c->buffer->merge_clusters (start, end);
hb_glyph_info_t buf[4];