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[kern] Remove Override business 

Not used in any fonts.  Not well-specified when mixing kerning with
Cross-Stream positioning.
This commit is contained in:
Behdad Esfahbod 2018-11-07 09:53:02 -05:00
parent 59e04e4231
commit befac337ca
1 changed files with 0 additions and 16 deletions
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16
src/hb-ot-kern-table.hh
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@ -588,8 +588,6 @@ struct KernTable
(st->u.header.Variation | st->u.header.CrossStream | st->u.header.Direction)) != (st->u.header.Variation | st->u.header.CrossStream | st->u.header.Direction)) !=
st->u.header.DirectionHorizontal) st->u.header.DirectionHorizontal)
continue; continue;
if (st->u.header.coverage & st->u.header.Override)
v = 0;
v += st->get_kerning (left, right); v += st->get_kerning (left, right);
st = &StructAfter<SubTable> (*st); st = &StructAfter<SubTable> (*st);
} }
@ -603,15 +601,6 @@ struct KernTable
c->set_lookup_index (0); c->set_lookup_index (0);
const SubTable *st = CastP<SubTable> (&thiz()->dataZ); const SubTable *st = CastP<SubTable> (&thiz()->dataZ);
unsigned int count = thiz()->nTables; unsigned int count = thiz()->nTables;
/* If there's an override subtable, skip subtables before that. */
unsigned int last_override = 0;
for (unsigned int i = 0; i < count; i++)
{
if (!(st->u.header.coverage & (st->u.header.Variation | st->u.header.CrossStream)) &&
(st->u.header.coverage & st->u.header.Override))
last_override = i;
st = &StructAfter<SubTable> (*st);
}
st = CastP<SubTable> (&thiz()->dataZ); st = CastP<SubTable> (&thiz()->dataZ);
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
{ {
@ -622,9 +611,6 @@ struct KernTable
((st->u.header.coverage & st->u.header.Direction) == st->u.header.DirectionHorizontal)) ((st->u.header.coverage & st->u.header.Direction) == st->u.header.DirectionHorizontal))
goto skip; goto skip;
if (i < last_override)
goto skip;
if (!c->buffer->message (c->font, "start kern subtable %d", c->lookup_index)) if (!c->buffer->message (c->font, "start kern subtable %d", c->lookup_index))
goto skip; goto skip;
@ -719,8 +705,6 @@ struct KernAAT : KernTable<KernAAT>
CrossStream = 0x40u, CrossStream = 0x40u,
Variation = 0x20u, Variation = 0x20u,
Override = 0x00u, /* Not supported. */
DirectionHorizontal= 0x00u DirectionHorizontal= 0x00u
}; };