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[hhea/vhea] Add MVAR during instancing

This commit is contained in:
Behdad Esfahbod 2023-01-11 14:36:02 -07:00
parent f455000138
commit ca19091549
1 changed files with 24 additions and 4 deletions
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28
src/hb-ot-hmtx-table.hh
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@ -31,6 +31,7 @@
#include "hb-ot-maxp-table.hh"
#include "hb-ot-hhea-table.hh"
#include "hb-ot-var-hvar-table.hh"
#include "hb-ot-var-mvar-table.hh"
#include "hb-ot-metrics.hh"
/*
@ -76,10 +77,10 @@ struct hmtxvmtx
const hb_hashmap_t<hb_codepoint_t, hb_pair_t<unsigned, int>>* get_mtx_map (const hb_subset_plan_t *plan) const
{ return T::is_horizontal ? &plan->hmtx_map : &plan->vmtx_map; }
bool subset_update_header (hb_subset_plan_t *plan,
bool subset_update_header (hb_subset_context_t *c,
unsigned int num_hmetrics) const
{
hb_blob_t *src_blob = hb_sanitize_context_t ().reference_table<H> (plan->source, H::tableTag);
hb_blob_t *src_blob = hb_sanitize_context_t ().reference_table<H> (c->plan->source, H::tableTag);
hb_blob_t *dest_blob = hb_blob_copy_writable_or_fail (src_blob);
hb_blob_destroy (src_blob);
@ -91,7 +92,26 @@ struct hmtxvmtx
H *table = (H *) hb_blob_get_data (dest_blob, &length);
table->numberOfLongMetrics = num_hmetrics;
bool result = plan->add_table (H::tableTag, dest_blob);
#ifndef HB_NO_VAR
if (c->plan->normalized_coords)
{
auto &MVAR = *c->plan->source->table.MVAR;
if (T::is_horizontal)
{
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_RISE, caretSlopeRise);
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_RUN, caretSlopeRun);
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_HORIZONTAL_CARET_OFFSET, caretOffset);
}
else
{
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_RISE, caretSlopeRise);
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_RUN, caretSlopeRun);
HB_ADD_MVAR_VAR (HB_OT_METRICS_TAG_VERTICAL_CARET_OFFSET, caretOffset);
}
}
#endif
bool result = c->plan->add_table (H::tableTag, dest_blob);
hb_blob_destroy (dest_blob);
return result;
@ -169,7 +189,7 @@ struct hmtxvmtx
return_trace (false);
// Amend header num hmetrics
if (unlikely (!subset_update_header (c->plan, num_long_metrics)))
if (unlikely (!subset_update_header (c, num_long_metrics)))
return_trace (false);
return_trace (true);