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[instance] update GPOS AnchorFormat3 table

This commit is contained in:
Qunxin Liu 2022-08-02 10:52:31 -07:00
parent 9ab6605f20
commit 61636d4efe
2 changed files with 39 additions and 10 deletions
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3
src/OT/Layout/GPOS/Anchor.hh
View File

@ -58,8 +58,7 @@ struct Anchor
return_trace (bool (reinterpret_cast<Anchor *> (u.format1.copy (c->serializer))));
}
return_trace (bool (reinterpret_cast<Anchor *> (u.format2.copy (c->serializer))));
case 3: return_trace (bool (reinterpret_cast<Anchor *> (u.format3.copy (c->serializer,
c->plan->layout_variation_idx_map))));
case 3: return_trace (u.format3.subset (c));
default:return_trace (false);
}
}

46
src/OT/Layout/GPOS/AnchorFormat3.hh
View File

@ -41,17 +41,47 @@ struct AnchorFormat3
*y += (this+yDeviceTable).get_y_delta (font, c->var_store, c->var_store_cache);
}
AnchorFormat3* copy (hb_serialize_context_t *c,
const hb_map_t *layout_variation_idx_map) const
bool subset (hb_subset_context_t *c) const
{
TRACE_SERIALIZE (this);
if (!layout_variation_idx_map) return_trace (nullptr);
TRACE_SUBSET (this);
auto *out = c->serializer->start_embed (*this);
if (unlikely (!out)) return_trace (false);
if (unlikely (!c->serializer->embed (format))) return_trace (false);
if (unlikely (!c->serializer->embed (xCoordinate))) return_trace (false);
if (unlikely (!c->serializer->embed (yCoordinate))) return_trace (false);
auto *out = c->embed<AnchorFormat3> (this);
if (unlikely (!out)) return_trace (nullptr);
unsigned x_varidx = xDeviceTable ? (this+xDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX;
if (c->plan->layout_variation_idx_delta_map->has (x_varidx))
{
int delta = hb_second (c->plan->layout_variation_idx_delta_map->get (x_varidx));
if (delta != 0)
{
if (!c->serializer->check_assign (out->xCoordinate, xCoordinate + delta,
HB_SERIALIZE_ERROR_INT_OVERFLOW))
return_trace (false);
}
}
out->xDeviceTable.serialize_copy (c, xDeviceTable, this, 0, hb_serialize_context_t::Head, layout_variation_idx_map);
out->yDeviceTable.serialize_copy (c, yDeviceTable, this, 0, hb_serialize_context_t::Head, layout_variation_idx_map);
unsigned y_varidx = yDeviceTable ? (this+yDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX;
if (c->plan->layout_variation_idx_delta_map->has (y_varidx))
{
int delta = hb_second (c->plan->layout_variation_idx_delta_map->get (y_varidx));
if (delta != 0)
{
if (!c->serializer->check_assign (out->yCoordinate, yCoordinate + delta,
HB_SERIALIZE_ERROR_INT_OVERFLOW))
return_trace (false);
}
}
if (c->plan->all_axes_pinned)
return_trace (c->serializer->check_assign (out->format, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW));
if (!c->serializer->embed (xDeviceTable)) return_trace (false);
if (!c->serializer->embed (yDeviceTable)) return_trace (false);
out->xDeviceTable.serialize_copy (c->serializer, xDeviceTable, this, 0, hb_serialize_context_t::Head, c->plan->layout_variation_idx_delta_map);
out->yDeviceTable.serialize_copy (c->serializer, yDeviceTable, this, 0, hb_serialize_context_t::Head, c->plan->layout_variation_idx_delta_map);
return_trace (out);
}