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[subset] GDEF LigCaretList subsetting support

This commit is contained in:
Qunxin Liu 2020-02-14 13:49:44 -08:00 committed by Ebrahim Byagowi
parent 002f0e20c4
commit b0749bfaa5
1 changed files with 72 additions and 1 deletions
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73
src/hb-ot-layout-gdef-table.hh
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@ -96,6 +96,13 @@ struct AttachList
struct CaretValueFormat1
{
friend struct CaretValue;
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
auto *out = c->serializer->embed (this);
if (unlikely (!out)) return_trace (false);
return_trace (true);
}
private:
hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction) const
@ -119,6 +126,13 @@ struct CaretValueFormat1
struct CaretValueFormat2
{
friend struct CaretValue;
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
auto *out = c->serializer->embed (this);
if (unlikely (!out)) return_trace (false);
return_trace (true);
}
private:
hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction, hb_codepoint_t glyph_id) const
@ -153,6 +167,15 @@ struct CaretValueFormat3
font->em_scale_y (coordinate) + (this+deviceTable).get_y_delta (font, var_store);
}
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
auto *out = c->serializer->embed (this);
if (unlikely (!out)) return_trace (false);
return_trace (out->deviceTable.serialize_copy (c->serializer, deviceTable, this, out));
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
@ -185,6 +208,19 @@ struct CaretValue
}
}
template <typename context_t, typename ...Ts>
typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
switch (u.format) {
case 1: return_trace (c->dispatch (u.format1, hb_forward<Ts> (ds)...));
case 2: return_trace (c->dispatch (u.format2, hb_forward<Ts> (ds)...));
case 3: return_trace (c->dispatch (u.format3, hb_forward<Ts> (ds)...));
default:return_trace (c->default_return_value ());
}
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
@ -229,6 +265,19 @@ struct LigGlyph
return carets.len;
}
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
auto *out = c->serializer->start_embed (*this);
if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
+ hb_iter (carets)
| hb_apply (subset_offset_array (c, out->carets, this, out))
;
return_trace (bool (out->carets));
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
@ -265,6 +314,28 @@ struct LigCaretList
return lig_glyph.get_lig_carets (font, direction, glyph_id, var_store, start_offset, caret_count, caret_array);
}
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
const hb_set_t &glyphset = *c->plan->glyphset ();
const hb_map_t &glyph_map = *c->plan->glyph_map;
auto *out = c->serializer->start_embed (*this);
if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
hb_sorted_vector_t<hb_codepoint_t> new_coverage;
+ hb_zip (this+coverage, ligGlyph)
| hb_filter (glyphset, hb_first)
| hb_filter (subset_offset_array (c, out->ligGlyph, this, out), hb_second)
| hb_map (hb_first)
| hb_map (glyph_map)
| hb_sink (new_coverage)
;
out->coverage.serialize (c->serializer, out)
.serialize (c->serializer, new_coverage.iter ());
return_trace (bool (new_coverage));
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
@ -481,7 +552,7 @@ struct GDEF
out->glyphClassDef.serialize_subset (c, glyphClassDef, this, out);
out->attachList = 0;//TODO(subset) serialize_subset (c, attachList, this, out);
out->ligCaretList = 0;//TODO(subset) serialize_subset (c, ligCaretList, this, out);
out->ligCaretList.serialize_subset (c, ligCaretList, this, out);
out->markAttachClassDef.serialize_subset (c, markAttachClassDef, this, out);
if (version.to_int () >= 0x00010002u)