[GPOS] Break down PairPosFormat1 into new layout
This commit is contained in:
Behdad Esfahbod
parent
aec34e17eb
commit
0b0e3b30ce
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@ -122,6 +122,8 @@ HB_BASE_sources = \
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OT/Layout/GPOS/GPOS.hh \
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OT/Layout/GPOS/GPOS.hh \
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OT/Layout/GPOS/CursivePosFormat1.hh \
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OT/Layout/GPOS/CursivePosFormat1.hh \
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OT/Layout/GPOS/MarkLigPos.hh \
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OT/Layout/GPOS/MarkLigPos.hh \
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OT/Layout/GPOS/PairValueRecord.hh \
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OT/Layout/GPOS/PairSet.hh \
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OT/Layout/GPOS/PairPos.hh \
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OT/Layout/GPOS/PairPos.hh \
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OT/Layout/GPOS/Anchor.hh \
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OT/Layout/GPOS/Anchor.hh \
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OT/Layout/GPOS/AnchorFormat1.hh \
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OT/Layout/GPOS/AnchorFormat1.hh \
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@ -1,242 +1,12 @@
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#ifndef OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH
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#ifndef OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH
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#define OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH
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#define OT_LAYOUT_GPOS_PAIRPOSFORMAT1_HH
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#include "PairSet.hh"
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namespace OT {
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namespace OT {
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namespace Layout {
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namespace Layout {
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namespace GPOS_impl {
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namespace GPOS_impl {
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struct PairValueRecord
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{
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friend struct PairSet;
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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_map_t *layout_variation_idx_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_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_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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protected:
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HBGlyphID16 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 (2, values);
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};
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struct PairSet
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{
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friend struct PairPosFormat1;
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bool intersects (const hb_set_t *glyphs,
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const ValueFormat *valueFormats) const
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{
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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unsigned int count = len;
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for (unsigned int i = 0; i < count; i++)
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{
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if (glyphs->has (record->secondGlyph))
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return true;
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record = &StructAtOffset<const PairValueRecord> (record, record_size);
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}
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return false;
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}
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void collect_glyphs (hb_collect_glyphs_context_t *c,
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const ValueFormat *valueFormats) const
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{
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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c->input->add_array (&record->secondGlyph, len, record_size);
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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) const
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{
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unsigned len1 = valueFormats[0].get_len ();
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unsigned len2 = valueFormats[1].get_len ();
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unsigned record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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unsigned count = len;
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for (unsigned i = 0; i < count; i++)
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{
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if (c->glyph_set->has (record->secondGlyph))
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{ record->collect_variation_indices (c, valueFormats, this); }
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record = &StructAtOffset<const PairValueRecord> (record, record_size);
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}
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}
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bool apply (hb_ot_apply_context_t *c,
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const ValueFormat *valueFormats,
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unsigned int pos) const
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{
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TRACE_APPLY (this);
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hb_buffer_t *buffer = c->buffer;
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = hb_bsearch (buffer->info[pos].codepoint,
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&firstPairValueRecord,
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len,
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record_size);
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if (record)
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{
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bool applied_first = valueFormats[0].apply_value (c, this, &record->values[0], buffer->cur_pos());
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bool applied_second = valueFormats[1].apply_value (c, this, &record->values[len1], buffer->pos[pos]);
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if (applied_first || applied_second)
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buffer->unsafe_to_break (buffer->idx, pos + 1);
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if (len2)
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pos++;
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buffer->idx = pos;
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return_trace (true);
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}
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buffer->unsafe_to_concat (buffer->idx, pos + 1);
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return_trace (false);
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}
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bool subset (hb_subset_context_t *c,
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const ValueFormat valueFormats[2],
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const ValueFormat newFormats[2]) const
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{
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TRACE_SUBSET (this);
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auto snap = c->serializer->snapshot ();
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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out->len = 0;
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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unsigned len1 = valueFormats[0].get_len ();
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unsigned len2 = valueFormats[1].get_len ();
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unsigned record_size = HBUINT16::static_size + Value::static_size * (len1 + len2);
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PairValueRecord::context_t context =
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{
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this,
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valueFormats,
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newFormats,
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len1,
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&glyph_map,
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c->plan->layout_variation_idx_map
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};
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const PairValueRecord *record = &firstPairValueRecord;
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unsigned count = len, num = 0;
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for (unsigned i = 0; i < count; i++)
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{
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if (glyphset.has (record->secondGlyph)
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&& record->subset (c, &context)) num++;
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record = &StructAtOffset<const PairValueRecord> (record, record_size);
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}
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out->len = num;
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if (!num) c->serializer->revert (snap);
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return_trace (num);
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}
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struct sanitize_closure_t
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{
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const ValueFormat *valueFormats;
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unsigned int len1; /* valueFormats[0].get_len() */
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unsigned int stride; /* 1 + len1 + len2 */
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};
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bool sanitize (hb_sanitize_context_t *c, const sanitize_closure_t *closure) const
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{
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TRACE_SANITIZE (this);
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if (!(c->check_struct (this)
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&& c->check_range (&firstPairValueRecord,
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len,
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HBUINT16::static_size,
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closure->stride))) return_trace (false);
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unsigned int count = len;
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const PairValueRecord *record = &firstPairValueRecord;
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return_trace (closure->valueFormats[0].sanitize_values_stride_unsafe (c, this, &record->values[0], count, closure->stride) &&
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closure->valueFormats[1].sanitize_values_stride_unsafe (c, this, &record->values[closure->len1], count, closure->stride));
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}
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protected:
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HBUINT16 len; /* Number of PairValueRecords */
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PairValueRecord firstPairValueRecord;
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/* Array of PairValueRecords--ordered
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* by GlyphID of the second glyph */
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public:
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DEFINE_SIZE_MIN (2);
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};
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struct PairPosFormat1
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struct PairPosFormat1
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{
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{
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@ -0,0 +1,169 @@
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#ifndef OT_LAYOUT_GPOS_PAIRSET_HH
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#define OT_LAYOUT_GPOS_PAIRSET_HH
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#include "PairValueRecord.hh"
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namespace OT {
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namespace Layout {
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namespace GPOS_impl {
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struct PairSet
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{
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friend struct PairPosFormat1;
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bool intersects (const hb_set_t *glyphs,
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const ValueFormat *valueFormats) const
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{
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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unsigned int count = len;
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for (unsigned int i = 0; i < count; i++)
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{
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if (glyphs->has (record->secondGlyph))
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return true;
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record = &StructAtOffset<const PairValueRecord> (record, record_size);
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}
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return false;
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}
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void collect_glyphs (hb_collect_glyphs_context_t *c,
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const ValueFormat *valueFormats) const
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{
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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c->input->add_array (&record->secondGlyph, len, record_size);
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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) const
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{
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unsigned len1 = valueFormats[0].get_len ();
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unsigned len2 = valueFormats[1].get_len ();
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unsigned record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = &firstPairValueRecord;
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unsigned count = len;
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for (unsigned i = 0; i < count; i++)
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{
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if (c->glyph_set->has (record->secondGlyph))
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{ record->collect_variation_indices (c, valueFormats, this); }
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record = &StructAtOffset<const PairValueRecord> (record, record_size);
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}
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}
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bool apply (hb_ot_apply_context_t *c,
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const ValueFormat *valueFormats,
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unsigned int pos) const
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{
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TRACE_APPLY (this);
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hb_buffer_t *buffer = c->buffer;
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unsigned int len1 = valueFormats[0].get_len ();
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unsigned int len2 = valueFormats[1].get_len ();
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unsigned int record_size = HBUINT16::static_size * (1 + len1 + len2);
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const PairValueRecord *record = hb_bsearch (buffer->info[pos].codepoint,
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&firstPairValueRecord,
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len,
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record_size);
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if (record)
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{
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bool applied_first = valueFormats[0].apply_value (c, this, &record->values[0], buffer->cur_pos());
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bool applied_second = valueFormats[1].apply_value (c, this, &record->values[len1], buffer->pos[pos]);
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if (applied_first || applied_second)
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buffer->unsafe_to_break (buffer->idx, pos + 1);
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if (len2)
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pos++;
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buffer->idx = pos;
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return_trace (true);
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}
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buffer->unsafe_to_concat (buffer->idx, pos + 1);
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return_trace (false);
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}
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bool subset (hb_subset_context_t *c,
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const ValueFormat valueFormats[2],
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const ValueFormat newFormats[2]) const
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{
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TRACE_SUBSET (this);
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auto snap = c->serializer->snapshot ();
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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out->len = 0;
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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unsigned len1 = valueFormats[0].get_len ();
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unsigned len2 = valueFormats[1].get_len ();
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unsigned record_size = HBUINT16::static_size + Value::static_size * (len1 + len2);
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PairValueRecord::context_t context =
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{
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this,
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valueFormats,
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newFormats,
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len1,
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&glyph_map,
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c->plan->layout_variation_idx_map
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};
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|
const PairValueRecord *record = &firstPairValueRecord;
|
||||||
|
unsigned count = len, num = 0;
|
||||||
|
for (unsigned i = 0; i < count; i++)
|
||||||
|
{
|
||||||
|
if (glyphset.has (record->secondGlyph)
|
||||||
|
&& record->subset (c, &context)) num++;
|
||||||
|
record = &StructAtOffset<const PairValueRecord> (record, record_size);
|
||||||
|
}
|
||||||
|
|
||||||
|
out->len = num;
|
||||||
|
if (!num) c->serializer->revert (snap);
|
||||||
|
return_trace (num);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct sanitize_closure_t
|
||||||
|
{
|
||||||
|
const ValueFormat *valueFormats;
|
||||||
|
unsigned int len1; /* valueFormats[0].get_len() */
|
||||||
|
unsigned int stride; /* 1 + len1 + len2 */
|
||||||
|
};
|
||||||
|
|
||||||
|
bool sanitize (hb_sanitize_context_t *c, const sanitize_closure_t *closure) const
|
||||||
|
{
|
||||||
|
TRACE_SANITIZE (this);
|
||||||
|
if (!(c->check_struct (this)
|
||||||
|
&& c->check_range (&firstPairValueRecord,
|
||||||
|
len,
|
||||||
|
HBUINT16::static_size,
|
||||||
|
closure->stride))) return_trace (false);
|
||||||
|
|
||||||
|
unsigned int count = len;
|
||||||
|
const PairValueRecord *record = &firstPairValueRecord;
|
||||||
|
return_trace (closure->valueFormats[0].sanitize_values_stride_unsafe (c, this, &record->values[0], count, closure->stride) &&
|
||||||
|
closure->valueFormats[1].sanitize_values_stride_unsafe (c, this, &record->values[closure->len1], count, closure->stride));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected:
|
||||||
|
HBUINT16 len; /* Number of PairValueRecords */
|
||||||
|
PairValueRecord firstPairValueRecord;
|
||||||
|
/* Array of PairValueRecords--ordered
|
||||||
|
* by GlyphID of the second glyph */
|
||||||
|
public:
|
||||||
|
DEFINE_SIZE_MIN (2);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif // OT_LAYOUT_GPOS_SET_HH
|
||||||
|
|
@ -0,0 +1,94 @@
|
||||||
|
#ifndef OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
|
||||||
|
#define OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
|
||||||
|
|
||||||
|
namespace OT {
|
||||||
|
namespace Layout {
|
||||||
|
namespace GPOS_impl {
|
||||||
|
|
||||||
|
|
||||||
|
struct PairValueRecord
|
||||||
|
{
|
||||||
|
friend struct PairSet;
|
||||||
|
|
||||||
|
int cmp (hb_codepoint_t k) const
|
||||||
|
{ return secondGlyph.cmp (k); }
|
||||||
|
|
||||||
|
struct context_t
|
||||||
|
{
|
||||||
|
const void *base;
|
||||||
|
const ValueFormat *valueFormats;
|
||||||
|
const ValueFormat *newFormats;
|
||||||
|
unsigned len1; /* valueFormats[0].get_len() */
|
||||||
|
const hb_map_t *glyph_map;
|
||||||
|
const hb_map_t *layout_variation_idx_map;
|
||||||
|
};
|
||||||
|
|
||||||
|
bool subset (hb_subset_context_t *c,
|
||||||
|
context_t *closure) const
|
||||||
|
{
|
||||||
|
TRACE_SERIALIZE (this);
|
||||||
|
auto *s = c->serializer;
|
||||||
|
auto *out = s->start_embed (*this);
|
||||||
|
if (unlikely (!s->extend_min (out))) return_trace (false);
|
||||||
|
|
||||||
|
out->secondGlyph = (*closure->glyph_map)[secondGlyph];
|
||||||
|
|
||||||
|
closure->valueFormats[0].copy_values (s,
|
||||||
|
closure->newFormats[0],
|
||||||
|
closure->base, &values[0],
|
||||||
|
closure->layout_variation_idx_map);
|
||||||
|
closure->valueFormats[1].copy_values (s,
|
||||||
|
closure->newFormats[1],
|
||||||
|
closure->base,
|
||||||
|
&values[closure->len1],
|
||||||
|
closure->layout_variation_idx_map);
|
||||||
|
|
||||||
|
return_trace (true);
|
||||||
|
}
|
||||||
|
|
||||||
|
void collect_variation_indices (hb_collect_variation_indices_context_t *c,
|
||||||
|
const ValueFormat *valueFormats,
|
||||||
|
const void *base) const
|
||||||
|
{
|
||||||
|
unsigned record1_len = valueFormats[0].get_len ();
|
||||||
|
unsigned record2_len = valueFormats[1].get_len ();
|
||||||
|
const hb_array_t<const Value> values_array = values.as_array (record1_len + record2_len);
|
||||||
|
|
||||||
|
if (valueFormats[0].has_device ())
|
||||||
|
valueFormats[0].collect_variation_indices (c, base, values_array.sub_array (0, record1_len));
|
||||||
|
|
||||||
|
if (valueFormats[1].has_device ())
|
||||||
|
valueFormats[1].collect_variation_indices (c, base, values_array.sub_array (record1_len, record2_len));
|
||||||
|
}
|
||||||
|
|
||||||
|
bool intersects (const hb_set_t& glyphset) const
|
||||||
|
{
|
||||||
|
return glyphset.has(secondGlyph);
|
||||||
|
}
|
||||||
|
|
||||||
|
const Value* get_values_1 () const
|
||||||
|
{
|
||||||
|
return &values[0];
|
||||||
|
}
|
||||||
|
|
||||||
|
const Value* get_values_2 (ValueFormat format1) const
|
||||||
|
{
|
||||||
|
return &values[format1.get_len ()];
|
||||||
|
}
|
||||||
|
|
||||||
|
protected:
|
||||||
|
HBGlyphID16 secondGlyph; /* GlyphID of second glyph in the
|
||||||
|
* pair--first glyph is listed in the
|
||||||
|
* Coverage table */
|
||||||
|
ValueRecord values; /* Positioning data for the first glyph
|
||||||
|
* followed by for second glyph */
|
||||||
|
public:
|
||||||
|
DEFINE_SIZE_ARRAY (2, values);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif // OT_LAYOUT_GPOS_PAIRVALUERECORD_HH
|
||||||
|
|
@ -126,6 +126,8 @@ hb_base_sources = files(
|
||||||
'OT/Layout/GPOS/GPOS.hh',
|
'OT/Layout/GPOS/GPOS.hh',
|
||||||
'OT/Layout/GPOS/CursivePosFormat1.hh',
|
'OT/Layout/GPOS/CursivePosFormat1.hh',
|
||||||
'OT/Layout/GPOS/MarkLigPos.hh',
|
'OT/Layout/GPOS/MarkLigPos.hh',
|
||||||
|
'OT/Layout/GPOS/PairValueRecord.hh',
|
||||||
|
'OT/Layout/GPOS/PairSet.hh',
|
||||||
'OT/Layout/GPOS/PairPos.hh',
|
'OT/Layout/GPOS/PairPos.hh',
|
||||||
'OT/Layout/GPOS/Anchor.hh',
|
'OT/Layout/GPOS/Anchor.hh',
|
||||||
'OT/Layout/GPOS/AnchorFormat1.hh',
|
'OT/Layout/GPOS/AnchorFormat1.hh',
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue