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-rw-r--r--src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/SinglePosFormat2.hh213
1 files changed, 213 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/SinglePosFormat2.hh b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/SinglePosFormat2.hh
new file mode 100644
index 0000000000..ae4a5ed756
--- /dev/null
+++ b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/SinglePosFormat2.hh
@@ -0,0 +1,213 @@
+#ifndef OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH
+#define OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH
+
+#include "Common.hh"
+
+namespace OT {
+namespace Layout {
+namespace GPOS_impl {
+
+struct SinglePosFormat2 : ValueBase
+{
+ protected:
+ HBUINT16 format; /* Format identifier--format = 2 */
+ Offset16To<Coverage>
+ coverage; /* Offset to Coverage table--from
+ * beginning of subtable */
+ ValueFormat valueFormat; /* Defines the types of data in the
+ * ValueRecord */
+ HBUINT16 valueCount; /* Number of ValueRecords */
+ ValueRecord values; /* Array of ValueRecords--positioning
+ * values applied to glyphs */
+ public:
+ DEFINE_SIZE_ARRAY (8, values);
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this) &&
+ coverage.sanitize (c, this) &&
+ valueFormat.sanitize_values (c, this, values, valueCount));
+ }
+
+ bool intersects (const hb_set_t *glyphs) const
+ { return (this+coverage).intersects (glyphs); }
+
+ void closure_lookups (hb_closure_lookups_context_t *c) const {}
+ void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
+ {
+ if (!valueFormat.has_device ()) return;
+
+ auto it =
+ + hb_zip (this+coverage, hb_range ((unsigned) valueCount))
+ | hb_filter (c->glyph_set, hb_first)
+ ;
+
+ if (!it) return;
+
+ unsigned sub_length = valueFormat.get_len ();
+ const hb_array_t<const Value> values_array = values.as_array (valueCount * sub_length);
+
+ for (unsigned i : + it
+ | hb_map (hb_second))
+ valueFormat.collect_variation_indices (c, this, values_array.sub_array (i * sub_length, sub_length));
+
+ }
+
+ void collect_glyphs (hb_collect_glyphs_context_t *c) const
+ { if (unlikely (!(this+coverage).collect_coverage (c->input))) return; }
+
+ const Coverage &get_coverage () const { return this+coverage; }
+
+ ValueFormat get_value_format () const { return valueFormat; }
+
+ bool apply (hb_ot_apply_context_t *c) const
+ {
+ TRACE_APPLY (this);
+ hb_buffer_t *buffer = c->buffer;
+ unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint);
+ if (likely (index == NOT_COVERED)) return_trace (false);
+
+ if (unlikely (index >= valueCount)) return_trace (false);
+
+ if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
+ {
+ c->buffer->message (c->font,
+ "positioning glyph at %u",
+ c->buffer->idx);
+ }
+
+ valueFormat.apply_value (c, this,
+ &values[index * valueFormat.get_len ()],
+ buffer->cur_pos());
+
+ if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
+ {
+ c->buffer->message (c->font,
+ "positioned glyph at %u",
+ c->buffer->idx);
+ }
+
+ buffer->idx++;
+ return_trace (true);
+ }
+
+ bool
+ position_single (hb_font_t *font,
+ hb_blob_t *table_blob,
+ hb_direction_t direction,
+ hb_codepoint_t gid,
+ hb_glyph_position_t &pos) const
+ {
+ unsigned int index = (this+coverage).get_coverage (gid);
+ if (likely (index == NOT_COVERED)) return false;
+ if (unlikely (index >= valueCount)) return false;
+
+ /* This is ugly... */
+ hb_buffer_t buffer;
+ buffer.props.direction = direction;
+ OT::hb_ot_apply_context_t c (1, font, &buffer, table_blob);
+
+ valueFormat.apply_value (&c, this,
+ &values[index * valueFormat.get_len ()],
+ pos);
+ return true;
+ }
+
+
+ template<typename Iterator,
+ typename SrcLookup,
+ hb_requires (hb_is_iterator (Iterator))>
+ void serialize (hb_serialize_context_t *c,
+ const SrcLookup *src,
+ Iterator it,
+ ValueFormat newFormat,
+ const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map)
+ {
+ auto out = c->extend_min (this);
+ if (unlikely (!out)) return;
+ if (unlikely (!c->check_assign (valueFormat, newFormat, HB_SERIALIZE_ERROR_INT_OVERFLOW))) return;
+ if (unlikely (!c->check_assign (valueCount, it.len (), HB_SERIALIZE_ERROR_ARRAY_OVERFLOW))) return;
+
+ + it
+ | hb_map (hb_second)
+ | hb_apply ([&] (hb_array_t<const Value> _)
+ { src->get_value_format ().copy_values (c, newFormat, src, &_, layout_variation_idx_delta_map); })
+ ;
+
+ auto glyphs =
+ + it
+ | hb_map_retains_sorting (hb_first)
+ ;
+
+ coverage.serialize_serialize (c, glyphs);
+ }
+
+ template<typename Iterator,
+ hb_requires (hb_is_iterator (Iterator))>
+ unsigned compute_effective_format (const hb_face_t *face,
+ Iterator it,
+ bool is_instancing, bool strip_hints,
+ bool has_gdef_varstore,
+ const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *varidx_delta_map) const
+ {
+ hb_blob_t* blob = hb_face_reference_table (face, HB_TAG ('f','v','a','r'));
+ bool has_fvar = (blob != hb_blob_get_empty ());
+ hb_blob_destroy (blob);
+
+ unsigned new_format = 0;
+ if (is_instancing)
+ {
+ new_format = new_format | valueFormat.get_effective_format (+ it | hb_map (hb_second), false, false, this, varidx_delta_map);
+ }
+ /* do not strip hints for VF */
+ else if (strip_hints)
+ {
+ bool strip = !has_fvar;
+ if (has_fvar && !has_gdef_varstore)
+ strip = true;
+ new_format = new_format | valueFormat.get_effective_format (+ it | hb_map (hb_second), strip, true, this, nullptr);
+ }
+ else
+ new_format = valueFormat;
+
+ return new_format;
+ }
+
+ bool subset (hb_subset_context_t *c) const
+ {
+ TRACE_SUBSET (this);
+ const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
+ const hb_map_t &glyph_map = *c->plan->glyph_map;
+
+ unsigned sub_length = valueFormat.get_len ();
+ auto values_array = values.as_array (valueCount * sub_length);
+
+ auto it =
+ + hb_zip (this+coverage, hb_range ((unsigned) valueCount))
+ | hb_filter (glyphset, hb_first)
+ | hb_map_retains_sorting ([&] (const hb_pair_t<hb_codepoint_t, unsigned>& _)
+ {
+ return hb_pair (glyph_map[_.first],
+ values_array.sub_array (_.second * sub_length,
+ sub_length));
+ })
+ ;
+
+ unsigned new_format = compute_effective_format (c->plan->source, it,
+ bool (c->plan->normalized_coords),
+ bool (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING),
+ c->plan->has_gdef_varstore,
+ &c->plan->layout_variation_idx_delta_map);
+ bool ret = bool (it);
+ SinglePos_serialize (c->serializer, this, it, &c->plan->layout_variation_idx_delta_map, new_format);
+ return_trace (ret);
+ }
+};
+
+
+}
+}
+}
+
+#endif /* OT_LAYOUT_GPOS_SINGLEPOSFORMAT2_HH */