diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh | 124 |
1 files changed, 110 insertions, 14 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh b/thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh index 2217d298fb..f523e35c00 100644 --- a/thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh +++ b/thirdparty/harfbuzz/src/hb-ot-layout-gpos-table.hh @@ -566,6 +566,26 @@ struct AnchorMatrix return_trace (true); } + bool subset (hb_subset_context_t *c, + unsigned cols, + const hb_map_t *klass_mapping) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + + auto indexes = + + hb_range (rows * cols) + | hb_filter ([=] (unsigned index) { return klass_mapping->has (index % cols); }) + ; + + out->serialize (c->serializer, + (unsigned) rows, + this, + c->plan->layout_variation_idx_map, + indexes); + return_trace (true); + } + bool sanitize (hb_sanitize_context_t *c, unsigned int cols) const { TRACE_SANITIZE (this); @@ -755,7 +775,7 @@ struct SinglePosFormat1 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto it = @@ -870,7 +890,7 @@ struct SinglePosFormat2 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + 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 (); @@ -1129,7 +1149,7 @@ struct PairSet if (unlikely (!c->serializer->extend_min (out))) return_trace (false); out->len = 0; - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; unsigned len1 = valueFormats[0].get_len (); @@ -1250,7 +1270,7 @@ struct PairPosFormat1 { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto *out = c->serializer->start_embed (*this); @@ -1441,7 +1461,7 @@ struct PairPosFormat2 }) ; - const hb_set_t &glyphset = *c->plan->_glyphset_gsub; + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto it = @@ -1728,7 +1748,7 @@ struct CursivePosFormat1 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto *out = c->serializer->start_embed (*this); @@ -1904,7 +1924,7 @@ struct MarkBasePosFormat1 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto *out = c->serializer->start_embed (*this); @@ -2025,10 +2045,37 @@ typedef AnchorMatrix LigatureAttach; /* component-major-- * mark-minor-- * ordered by class--zero-based. */ -typedef OffsetListOf<LigatureAttach> LigatureArray; - /* Array of LigatureAttach - * tables ordered by - * LigatureCoverage Index */ +/* Array of LigatureAttach tables ordered by LigatureCoverage Index */ +struct LigatureArray : OffsetListOf<LigatureAttach> +{ + template <typename Iterator, + hb_requires (hb_is_iterator (Iterator))> + bool subset (hb_subset_context_t *c, + Iterator coverage, + unsigned class_count, + const hb_map_t *klass_mapping) const + { + TRACE_SUBSET (this); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + for (const auto _ : + hb_zip (coverage, *this) + | hb_filter (glyphset, hb_first)) + { + auto *matrix = out->serialize_append (c->serializer); + if (unlikely (!matrix)) return_trace (false); + + matrix->serialize_subset (c, + _.second, + this, + class_count, + klass_mapping); + } + return_trace (this->len); + } +}; struct MarkLigPosFormat1 { @@ -2130,8 +2177,56 @@ struct MarkLigPosFormat1 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - // TODO(subset) - return_trace (false); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); + const hb_map_t &glyph_map = *c->plan->glyph_map; + + auto *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->format = format; + + hb_map_t klass_mapping; + Markclass_closure_and_remap_indexes (this+markCoverage, this+markArray, glyphset, &klass_mapping); + + if (!klass_mapping.get_population ()) return_trace (false); + out->classCount = klass_mapping.get_population (); + + auto mark_iter = + + hb_zip (this+markCoverage, this+markArray) + | hb_filter (glyphset, hb_first) + ; + + auto new_mark_coverage = + + mark_iter + | hb_map_retains_sorting (hb_first) + | hb_map_retains_sorting (glyph_map) + ; + + if (!out->markCoverage.serialize (c->serializer, out) + .serialize (c->serializer, new_mark_coverage)) + return_trace (false); + + out->markArray.serialize (c->serializer, out) + .serialize (c->serializer, + &klass_mapping, + c->plan->layout_variation_idx_map, + &(this+markArray), + + mark_iter + | hb_map (hb_second)); + + auto new_ligature_coverage = + + hb_iter (this + ligatureCoverage) + | hb_filter (glyphset) + | hb_map_retains_sorting (glyph_map) + ; + + if (!out->ligatureCoverage.serialize (c->serializer, out) + .serialize (c->serializer, new_ligature_coverage)) + return_trace (false); + + out->ligatureArray.serialize_subset (c, ligatureArray, this, + hb_iter (this+ligatureCoverage), classCount, &klass_mapping); + + return_trace (true); } bool sanitize (hb_sanitize_context_t *c) const @@ -2164,6 +2259,7 @@ struct MarkLigPosFormat1 DEFINE_SIZE_STATIC (12); }; + struct MarkLigPos { template <typename context_t, typename ...Ts> @@ -2288,7 +2384,7 @@ struct MarkMarkPosFormat1 bool subset (hb_subset_context_t *c) const { TRACE_SUBSET (this); - const hb_set_t &glyphset = *c->plan->glyphset (); + const hb_set_t &glyphset = *c->plan->glyphset_gsub (); const hb_map_t &glyph_map = *c->plan->glyph_map; auto *out = c->serializer->start_embed (*this); |