GSUB.hh (1471B)
1 #ifndef OT_LAYOUT_GSUB_GSUB_HH 2 #define OT_LAYOUT_GSUB_GSUB_HH 3 4 #include "../../../hb-ot-layout-gsubgpos.hh" 5 #include "Common.hh" 6 #include "SubstLookup.hh" 7 8 namespace OT { 9 10 using Layout::GSUB_impl::SubstLookup; 11 12 namespace Layout { 13 14 /* 15 * GSUB -- Glyph Substitution 16 * https://docs.microsoft.com/en-us/typography/opentype/spec/gsub 17 */ 18 19 struct GSUB : GSUBGPOS 20 { 21 using Lookup = SubstLookup; 22 23 static constexpr hb_tag_t tableTag = HB_OT_TAG_GSUB; 24 25 const SubstLookup& get_lookup (unsigned int i) const 26 { return static_cast<const SubstLookup &> (GSUBGPOS::get_lookup (i)); } 27 28 bool subset (hb_subset_context_t *c) const 29 { 30 hb_subset_layout_context_t l (c, tableTag); 31 return GSUBGPOS::subset<SubstLookup> (&l); 32 } 33 34 bool sanitize (hb_sanitize_context_t *c) const 35 { 36 TRACE_SANITIZE (this); 37 return_trace (GSUBGPOS::sanitize<SubstLookup> (c)); 38 } 39 40 HB_INTERNAL bool is_blocklisted (hb_blob_t *blob, 41 hb_face_t *face) const; 42 43 void closure_lookups (hb_face_t *face, 44 const hb_set_t *glyphs, 45 hb_set_t *lookup_indexes /* IN/OUT */) const 46 { GSUBGPOS::closure_lookups<SubstLookup> (face, glyphs, lookup_indexes); } 47 48 typedef GSUBGPOS::accelerator_t<GSUB> accelerator_t; 49 }; 50 51 52 } 53 54 struct GSUB_accelerator_t : Layout::GSUB::accelerator_t { 55 GSUB_accelerator_t (hb_face_t *face) : Layout::GSUB::accelerator_t (face) {} 56 }; 57 58 59 } 60 61 #endif /* OT_LAYOUT_GSUB_GSUB_HH */