diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh | 71 |
1 files changed, 68 insertions, 3 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh b/src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh index 208db46741..1f0401d1d3 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-var-mvar-table.hh @@ -27,7 +27,7 @@ #ifndef HB_OT_VAR_MVAR_TABLE_HH #define HB_OT_VAR_MVAR_TABLE_HH -#include "hb-ot-layout-common.hh" +#include "hb-ot-var-common.hh" namespace OT { @@ -41,9 +41,22 @@ struct VariationValueRecord return_trace (c->check_struct (this)); } + bool subset (hb_subset_context_t *c, + const hb_map_t& varidx_map) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + hb_codepoint_t *new_idx; + return_trace (c->serializer->check_assign (out->varIdx, + (varidx_map.has (varIdx, &new_idx)) ? *new_idx : HB_OT_LAYOUT_NO_VARIATIONS_INDEX, + HB_SERIALIZE_ERROR_INT_OVERFLOW)); + } + public: Tag valueTag; /* Four-byte tag identifying a font-wide measure. */ - HBUINT32 varIdx; /* Outer/inner index into VariationStore item. */ + VarIdx varIdx; /* Outer/inner index into ItemVariationStore item. */ public: DEFINE_SIZE_STATIC (8); @@ -64,8 +77,10 @@ struct MVAR { TRACE_SANITIZE (this); return_trace (version.sanitize (c) && + hb_barrier () && likely (version.major == 1) && c->check_struct (this) && + hb_barrier () && valueRecordSize >= VariationValueRecord::static_size && varStore.sanitize (c, this) && c->check_range (valuesZ.arrayZ, @@ -73,6 +88,47 @@ struct MVAR valueRecordSize)); } + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); +#ifdef HB_NO_VAR + return_trace (false); +#endif + + if (c->plan->all_axes_pinned) + return_trace (false); + + MVAR *out = c->serializer->start_embed (*this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + out->version = version; + out->reserved = reserved; + out->valueRecordSize = valueRecordSize; + out->valueRecordCount = valueRecordCount; + + item_variations_t item_vars; + const ItemVariationStore& src_var_store = this+varStore; + + if (!item_vars.instantiate (src_var_store, c->plan)) + return_trace (false); + + /* serialize varstore */ + if (!out->varStore.serialize_serialize (c->serializer, item_vars.has_long_word (), + c->plan->axis_tags, + item_vars.get_region_list (), + item_vars.get_vardata_encodings ())) + return_trace (false); + + /* serialize value records array */ + unsigned value_rec_count = valueRecordCount; + const VariationValueRecord *record = reinterpret_cast<const VariationValueRecord*> (valuesZ.arrayZ); + for (unsigned i = 0; i < value_rec_count; i++) + { + if (!record->subset (c, item_vars.get_varidx_map ())) return_trace (false); + record++; + } + return_trace (true); + } + float get_var (hb_tag_t tag, const int *coords, unsigned int coord_count) const { @@ -103,7 +159,7 @@ protected: HBUINT16 valueRecordSize;/* The size in bytes of each value record — * must be greater than zero. */ HBUINT16 valueRecordCount;/* The number of value records — may be zero. */ - Offset16To<VariationStore> + Offset16To<ItemVariationStore> varStore; /* Offset to item variation store table. */ UnsizedArrayOf<HBUINT8> valuesZ; /* Array of value records. The records must be @@ -116,4 +172,13 @@ protected: } /* namespace OT */ +#define HB_ADD_MVAR_VAR(tag, field) \ + c->serializer->check_assign (table->field, \ + roundf (table->field + \ + MVAR.get_var (tag, \ + c->plan->normalized_coords.arrayZ, \ + c->plan->normalized_coords.length)), \ + HB_SERIALIZE_ERROR_INT_OVERFLOW) + + #endif /* HB_OT_VAR_MVAR_TABLE_HH */ |