100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
#ifndef OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
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#define OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
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#include "ValueFormat.hh"
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namespace OT {
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namespace Layout {
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namespace GPOS_impl {
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template <typename Types>
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struct PairValueRecord
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{
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template <typename Types2>
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friend struct PairSet;
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protected:
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typename Types::HBGlyphID
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secondGlyph; /* GlyphID of second glyph in the
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* pair--first glyph is listed in the
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* Coverage table */
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ValueRecord values; /* Positioning data for the first glyph
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* followed by for second glyph */
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public:
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DEFINE_SIZE_ARRAY (Types::size, values);
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int cmp (hb_codepoint_t k) const
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{ return secondGlyph.cmp (k); }
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struct context_t
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{
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const void *base;
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const ValueFormat *valueFormats;
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const ValueFormat *newFormats;
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unsigned len1; /* valueFormats[0].get_len() */
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const hb_map_t *glyph_map;
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const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map;
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};
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bool subset (hb_subset_context_t *c,
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context_t *closure) const
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{
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TRACE_SERIALIZE (this);
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auto *s = c->serializer;
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auto *out = s->start_embed (*this);
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if (unlikely (!s->extend_min (out))) return_trace (false);
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out->secondGlyph = (*closure->glyph_map)[secondGlyph];
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closure->valueFormats[0].copy_values (s,
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closure->newFormats[0],
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closure->base, &values[0],
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closure->layout_variation_idx_delta_map);
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closure->valueFormats[1].copy_values (s,
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closure->newFormats[1],
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closure->base,
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&values[closure->len1],
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closure->layout_variation_idx_delta_map);
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return_trace (true);
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}
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void collect_variation_indices (hb_collect_variation_indices_context_t *c,
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const ValueFormat *valueFormats,
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const void *base) const
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{
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unsigned record1_len = valueFormats[0].get_len ();
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unsigned record2_len = valueFormats[1].get_len ();
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const hb_array_t<const Value> values_array = values.as_array (record1_len + record2_len);
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if (valueFormats[0].has_device ())
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valueFormats[0].collect_variation_indices (c, base, values_array.sub_array (0, record1_len));
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if (valueFormats[1].has_device ())
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valueFormats[1].collect_variation_indices (c, base, values_array.sub_array (record1_len, record2_len));
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}
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bool intersects (const hb_set_t& glyphset) const
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{
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return glyphset.has(secondGlyph);
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}
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const Value* get_values_1 () const
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{
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return &values[0];
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}
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const Value* get_values_2 (ValueFormat format1) const
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{
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return &values[format1.get_len ()];
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}
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};
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}
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}
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}
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#endif // OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
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