kc3-lang/harfbuzz/src/OT/Layout/GSUB/GSUB.hh

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• Hash : 8f3a7017
  Author :
  Date : 2022-09-09T15:00:37
  

  [instance] support FeatureVariations table
  

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• src/OT/Layout/GSUB/GSUB.hh

• #ifndef OT_LAYOUT_GSUB_GSUB_HH
  #define OT_LAYOUT_GSUB_GSUB_HH
  
  #include "../../../hb-ot-layout-gsubgpos.hh"
  #include "Common.hh"
  #include "SubstLookup.hh"
  
  namespace OT {
  
  using Layout::GSUB_impl::SubstLookup;
  
  namespace Layout {
  
  /*
   * GSUB -- Glyph Substitution
   * https://docs.microsoft.com/en-us/typography/opentype/spec/gsub
   */
  
  struct GSUB : GSUBGPOS
  {
    using Lookup = SubstLookup;
  
    static constexpr hb_tag_t tableTag = HB_OT_TAG_GSUB;
  
    const SubstLookup& get_lookup (unsigned int i) const
    { return static_cast<const SubstLookup &> (GSUBGPOS::get_lookup (i)); }
  
    bool subset (hb_subset_context_t *c) const
    {
      hb_subset_layout_context_t l (c, tableTag);
      return GSUBGPOS::subset<SubstLookup> (&l);
    }
  
    bool sanitize (hb_sanitize_context_t *c) const
    {
      TRACE_SANITIZE (this);
      return_trace (GSUBGPOS::sanitize<SubstLookup> (c));
    }
  
    HB_INTERNAL bool is_blocklisted (hb_blob_t *blob,
                                     hb_face_t *face) const;
  
    void closure_lookups (hb_face_t      *face,
                          const hb_set_t *glyphs,
                          hb_set_t       *lookup_indexes /* IN/OUT */) const
    { GSUBGPOS::closure_lookups<SubstLookup> (face, glyphs, lookup_indexes); }
  
    typedef GSUBGPOS::accelerator_t<GSUB> accelerator_t;
  };
  
  
  }
  
  struct GSUB_accelerator_t : Layout::GSUB::accelerator_t {
    GSUB_accelerator_t (hb_face_t *face) : Layout::GSUB::accelerator_t (face) {}
  };
  
  
  }
  
  #endif  /* OT_LAYOUT_GSUB_GSUB_HH */
  

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