80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
#ifndef OT_LAYOUT_GPOS_POSLOOKUP_HH
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#define OT_LAYOUT_GPOS_POSLOOKUP_HH
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#include "PosLookupSubTable.hh"
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#include "../../../hb-ot-layout-common.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 PosLookup : Lookup
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{
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using SubTable = PosLookupSubTable;
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const SubTable& get_subtable (unsigned int i) const
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{ return Lookup::get_subtable<SubTable> (i); }
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bool is_reverse () const
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{
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return false;
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}
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bool apply (hb_ot_apply_context_t *c) const
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{
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TRACE_APPLY (this);
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return_trace (dispatch (c));
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}
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bool intersects (const hb_set_t *glyphs) const
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{
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hb_intersects_context_t c (glyphs);
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return dispatch (&c);
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}
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hb_collect_glyphs_context_t::return_t collect_glyphs (hb_collect_glyphs_context_t *c) const
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{ return dispatch (c); }
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hb_closure_lookups_context_t::return_t closure_lookups (hb_closure_lookups_context_t *c, unsigned this_index) const
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{
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if (c->is_lookup_visited (this_index))
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return hb_closure_lookups_context_t::default_return_value ();
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c->set_lookup_visited (this_index);
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if (!intersects (c->glyphs))
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{
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c->set_lookup_inactive (this_index);
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return hb_closure_lookups_context_t::default_return_value ();
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}
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hb_closure_lookups_context_t::return_t ret = dispatch (c);
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return ret;
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}
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template <typename set_t>
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void collect_coverage (set_t *glyphs) const
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{
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hb_collect_coverage_context_t<set_t> c (glyphs);
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dispatch (&c);
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}
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template <typename context_t>
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static typename context_t::return_t dispatch_recurse_func (context_t *c, unsigned int lookup_index);
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template <typename context_t, typename ...Ts>
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typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
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{ return Lookup::dispatch<SubTable> (c, std::forward<Ts> (ds)...); }
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bool subset (hb_subset_context_t *c) const
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{ return Lookup::subset<SubTable> (c); }
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bool sanitize (hb_sanitize_context_t *c) const
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{ return Lookup::sanitize<SubTable> (c); }
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};
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}
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}
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}
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#endif /* OT_LAYOUT_GPOS_SUBSTLOOKUP_HH */
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