PairValueRecord.hh (3102B)
1 #ifndef OT_LAYOUT_GPOS_PAIRVALUERECORD_HH 2 #define OT_LAYOUT_GPOS_PAIRVALUERECORD_HH 3 4 #include "ValueFormat.hh" 5 6 namespace OT { 7 namespace Layout { 8 namespace GPOS_impl { 9 10 11 template <typename Types> 12 struct PairValueRecord 13 { 14 template <typename Types2> 15 friend struct PairSet; 16 17 protected: 18 typename Types::HBGlyphID 19 secondGlyph; /* GlyphID of second glyph in the 20 * pair--first glyph is listed in the 21 * Coverage table */ 22 ValueRecord values; /* Positioning data for the first glyph 23 * followed by for second glyph */ 24 public: 25 DEFINE_SIZE_ARRAY (Types::HBGlyphID::static_size, values); 26 27 int cmp (hb_codepoint_t k) const 28 { return secondGlyph.cmp (k); } 29 30 struct context_t 31 { 32 const ValueBase *base; 33 const ValueFormat *valueFormats; 34 const ValueFormat *newFormats; 35 unsigned len1; /* valueFormats[0].get_len() */ 36 const hb_map_t *glyph_map; 37 const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map; 38 }; 39 40 bool subset (hb_subset_context_t *c, 41 context_t *closure) const 42 { 43 TRACE_SERIALIZE (this); 44 auto *s = c->serializer; 45 auto *out = s->start_embed (*this); 46 if (unlikely (!s->extend_min (out))) return_trace (false); 47 48 out->secondGlyph = (*closure->glyph_map)[secondGlyph]; 49 50 closure->valueFormats[0].copy_values (s, 51 closure->newFormats[0], 52 closure->base, &values[0], 53 closure->layout_variation_idx_delta_map); 54 closure->valueFormats[1].copy_values (s, 55 closure->newFormats[1], 56 closure->base, 57 &values[closure->len1], 58 closure->layout_variation_idx_delta_map); 59 60 return_trace (true); 61 } 62 63 void collect_variation_indices (hb_collect_variation_indices_context_t *c, 64 const ValueFormat *valueFormats, 65 const ValueBase *base) const 66 { 67 unsigned record1_len = valueFormats[0].get_len (); 68 unsigned record2_len = valueFormats[1].get_len (); 69 const hb_array_t<const Value> values_array = values.as_array (record1_len + record2_len); 70 71 if (valueFormats[0].has_device ()) 72 valueFormats[0].collect_variation_indices (c, base, values_array.sub_array (0, record1_len)); 73 74 if (valueFormats[1].has_device ()) 75 valueFormats[1].collect_variation_indices (c, base, values_array.sub_array (record1_len, record2_len)); 76 } 77 78 bool intersects (const hb_set_t& glyphset) const 79 { 80 return glyphset.has(secondGlyph); 81 } 82 83 const Value* get_values_1 () const 84 { 85 return &values[0]; 86 } 87 88 const Value* get_values_2 (ValueFormat format1) const 89 { 90 return &values[format1.get_len ()]; 91 } 92 }; 93 94 95 } 96 } 97 } 98 99 #endif // OT_LAYOUT_GPOS_PAIRVALUERECORD_HH