#ifndef HB_OT_LAYOUT_GDEF_TABLE_HH
#define HB_OT_LAYOUT_GDEF_TABLE_HH
-#include "hb-ot-layout-common.hh"
-
-#include "hb-font.hh"
-
-
-namespace OT {
-
-
-/*
- * Attachment List Table
- */
-
-/* Array of contour point indices--in increasing numerical order */
-struct AttachPoint : Array16Of<HBUINT16>
-{
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->start_embed (*this);
- if (unlikely (!out)) return_trace (false);
-
- return_trace (out->serialize (c->serializer, + iter ()));
- }
-};
-
-struct AttachList
-{
- unsigned int get_attach_points (hb_codepoint_t glyph_id,
- unsigned int start_offset,
- unsigned int *point_count /* IN/OUT */,
- unsigned int *point_array /* OUT */) const
- {
- unsigned int index = (this+coverage).get_coverage (glyph_id);
- if (index == NOT_COVERED)
- {
- if (point_count)
- *point_count = 0;
- return 0;
- }
-
- const AttachPoint &points = this+attachPoint[index];
-
- if (point_count)
- {
- + points.sub_array (start_offset, point_count)
- | hb_sink (hb_array (point_array, *point_count))
- ;
- }
-
- return points.len;
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- 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);
-
- hb_sorted_vector_t<hb_codepoint_t> new_coverage;
- + hb_zip (this+coverage, attachPoint)
- | hb_filter (glyphset, hb_first)
- | hb_filter (subset_offset_array (c, out->attachPoint, this), hb_second)
- | hb_map (hb_first)
- | hb_map (glyph_map)
- | hb_sink (new_coverage)
- ;
- out->coverage.serialize_serialize (c->serializer, new_coverage.iter ());
- return_trace (bool (new_coverage));
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (coverage.sanitize (c, this) && attachPoint.sanitize (c, this));
- }
-
- protected:
- Offset16To<Coverage>
- coverage; /* Offset to Coverage table -- from
- * beginning of AttachList table */
- Array16OfOffset16To<AttachPoint>
- attachPoint; /* Array of AttachPoint tables
- * in Coverage Index order */
- public:
- DEFINE_SIZE_ARRAY (4, attachPoint);
-};
-
-/*
- * Ligature Caret Table
- */
-
-struct CaretValueFormat1
-{
- friend struct CaretValue;
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->embed (this);
- if (unlikely (!out)) return_trace (false);
- return_trace (true);
- }
-
- private:
- hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction) const
- {
- return HB_DIRECTION_IS_HORIZONTAL (direction) ? font->em_scale_x (coordinate) : font->em_scale_y (coordinate);
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this));
- }
-
- protected:
- HBUINT16 caretValueFormat; /* Format identifier--format = 1 */
- FWORD coordinate; /* X or Y value, in design units */
- public:
- DEFINE_SIZE_STATIC (4);
-};
-
-struct CaretValueFormat2
-{
- friend struct CaretValue;
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->embed (this);
- if (unlikely (!out)) return_trace (false);
- return_trace (true);
- }
-
- private:
- hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction, hb_codepoint_t glyph_id) const
- {
- hb_position_t x, y;
- font->get_glyph_contour_point_for_origin (glyph_id, caretValuePoint, direction, &x, &y);
- return HB_DIRECTION_IS_HORIZONTAL (direction) ? x : y;
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this));
- }
-
- protected:
- HBUINT16 caretValueFormat; /* Format identifier--format = 2 */
- HBUINT16 caretValuePoint; /* Contour point index on glyph */
- public:
- DEFINE_SIZE_STATIC (4);
-};
-
-struct CaretValueFormat3
-{
- friend struct CaretValue;
-
- hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction,
- const VariationStore &var_store) const
- {
- return HB_DIRECTION_IS_HORIZONTAL (direction) ?
- font->em_scale_x (coordinate) + (this+deviceTable).get_x_delta (font, var_store) :
- font->em_scale_y (coordinate) + (this+deviceTable).get_y_delta (font, var_store);
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->embed (this);
- if (unlikely (!out)) return_trace (false);
-
- return_trace (out->deviceTable.serialize_copy (c->serializer, deviceTable, this, c->serializer->to_bias (out),
- hb_serialize_context_t::Head, c->plan->layout_variation_idx_map));
- }
-
- void collect_variation_indices (hb_set_t *layout_variation_indices) const
- { (this+deviceTable).collect_variation_indices (layout_variation_indices); }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) && deviceTable.sanitize (c, this));
- }
-
- protected:
- HBUINT16 caretValueFormat; /* Format identifier--format = 3 */
- FWORD coordinate; /* X or Y value, in design units */
- Offset16To<Device>
- deviceTable; /* Offset to Device table for X or Y
- * value--from beginning of CaretValue
- * table */
- public:
- DEFINE_SIZE_STATIC (6);
-};
-
-struct CaretValue
-{
- hb_position_t get_caret_value (hb_font_t *font,
- hb_direction_t direction,
- hb_codepoint_t glyph_id,
- const VariationStore &var_store) const
- {
- switch (u.format) {
- case 1: return u.format1.get_caret_value (font, direction);
- case 2: return u.format2.get_caret_value (font, direction, glyph_id);
- case 3: return u.format3.get_caret_value (font, direction, var_store);
- default:return 0;
- }
- }
-
- template <typename context_t, typename ...Ts>
- typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
- {
- TRACE_DISPATCH (this, u.format);
- if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
- switch (u.format) {
- case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
- case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
- case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...));
- default:return_trace (c->default_return_value ());
- }
- }
-
- void collect_variation_indices (hb_set_t *layout_variation_indices) const
- {
- switch (u.format) {
- case 1:
- case 2:
- return;
- case 3:
- u.format3.collect_variation_indices (layout_variation_indices);
- return;
- default: return;
- }
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (!u.format.sanitize (c)) return_trace (false);
- switch (u.format) {
- case 1: return_trace (u.format1.sanitize (c));
- case 2: return_trace (u.format2.sanitize (c));
- case 3: return_trace (u.format3.sanitize (c));
- default:return_trace (true);
- }
- }
-
- protected:
- union {
- HBUINT16 format; /* Format identifier */
- CaretValueFormat1 format1;
- CaretValueFormat2 format2;
- CaretValueFormat3 format3;
- } u;
- public:
- DEFINE_SIZE_UNION (2, format);
-};
-
-struct LigGlyph
-{
- unsigned get_lig_carets (hb_font_t *font,
- hb_direction_t direction,
- hb_codepoint_t glyph_id,
- const VariationStore &var_store,
- unsigned start_offset,
- unsigned *caret_count /* IN/OUT */,
- hb_position_t *caret_array /* OUT */) const
- {
- if (caret_count)
- {
- + carets.sub_array (start_offset, caret_count)
- | hb_map (hb_add (this))
- | hb_map ([&] (const CaretValue &value) { return value.get_caret_value (font, direction, glyph_id, var_store); })
- | hb_sink (hb_array (caret_array, *caret_count))
- ;
- }
-
- return carets.len;
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->start_embed (*this);
- if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
-
- + hb_iter (carets)
- | hb_apply (subset_offset_array (c, out->carets, this))
- ;
-
- return_trace (bool (out->carets));
- }
-
- void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
- {
- for (const Offset16To<CaretValue>& offset : carets.iter ())
- (this+offset).collect_variation_indices (c->layout_variation_indices);
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (carets.sanitize (c, this));
- }
-
- protected:
- Array16OfOffset16To<CaretValue>
- carets; /* Offset array of CaretValue tables
- * --from beginning of LigGlyph table
- * --in increasing coordinate order */
- public:
- DEFINE_SIZE_ARRAY (2, carets);
-};
-
-struct LigCaretList
-{
- unsigned int get_lig_carets (hb_font_t *font,
- hb_direction_t direction,
- hb_codepoint_t glyph_id,
- const VariationStore &var_store,
- unsigned int start_offset,
- unsigned int *caret_count /* IN/OUT */,
- hb_position_t *caret_array /* OUT */) const
- {
- unsigned int index = (this+coverage).get_coverage (glyph_id);
- if (index == NOT_COVERED)
- {
- if (caret_count)
- *caret_count = 0;
- return 0;
- }
- const LigGlyph &lig_glyph = this+ligGlyph[index];
- return lig_glyph.get_lig_carets (font, direction, glyph_id, var_store, start_offset, caret_count, caret_array);
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- 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);
-
- hb_sorted_vector_t<hb_codepoint_t> new_coverage;
- + hb_zip (this+coverage, ligGlyph)
- | hb_filter (glyphset, hb_first)
- | hb_filter (subset_offset_array (c, out->ligGlyph, this), hb_second)
- | hb_map (hb_first)
- | hb_map (glyph_map)
- | hb_sink (new_coverage)
- ;
- out->coverage.serialize_serialize (c->serializer, new_coverage.iter ());
- return_trace (bool (new_coverage));
- }
-
- void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
- {
- + hb_zip (this+coverage, ligGlyph)
- | hb_filter (c->glyph_set, hb_first)
- | hb_map (hb_second)
- | hb_map (hb_add (this))
- | hb_apply ([c] (const LigGlyph& _) { _.collect_variation_indices (c); })
- ;
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (coverage.sanitize (c, this) && ligGlyph.sanitize (c, this));
- }
-
- protected:
- Offset16To<Coverage>
- coverage; /* Offset to Coverage table--from
- * beginning of LigCaretList table */
- Array16OfOffset16To<LigGlyph>
- ligGlyph; /* Array of LigGlyph tables
- * in Coverage Index order */
- public:
- DEFINE_SIZE_ARRAY (4, ligGlyph);
-};
-
-
-struct MarkGlyphSetsFormat1
-{
- bool covers (unsigned int set_index, hb_codepoint_t glyph_id) const
- { return (this+coverage[set_index]).get_coverage (glyph_id) != NOT_COVERED; }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->start_embed (*this);
- if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
- out->format = format;
-
- bool ret = true;
- for (const Offset32To<Coverage>& offset : coverage.iter ())
- {
- auto *o = out->coverage.serialize_append (c->serializer);
- if (unlikely (!o))
- {
- ret = false;
- break;
- }
-
- //not using o->serialize_subset (c, offset, this, out) here because
- //OTS doesn't allow null offset.
- //See issue: https://github.com/khaledhosny/ots/issues/172
- c->serializer->push ();
- c->dispatch (this+offset);
- c->serializer->add_link (*o, c->serializer->pop_pack ());
- }
-
- return_trace (ret && out->coverage.len);
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (coverage.sanitize (c, this));
- }
-
- protected:
- HBUINT16 format; /* Format identifier--format = 1 */
- Array16Of<Offset32To<Coverage>>
- coverage; /* Array of long offsets to mark set
- * coverage tables */
- public:
- DEFINE_SIZE_ARRAY (4, coverage);
-};
-
-struct MarkGlyphSets
-{
- bool covers (unsigned int set_index, hb_codepoint_t glyph_id) const
- {
- switch (u.format) {
- case 1: return u.format1.covers (set_index, glyph_id);
- default:return false;
- }
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- switch (u.format) {
- case 1: return_trace (u.format1.subset (c));
- default:return_trace (false);
- }
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- if (!u.format.sanitize (c)) return_trace (false);
- switch (u.format) {
- case 1: return_trace (u.format1.sanitize (c));
- default:return_trace (true);
- }
- }
-
- protected:
- union {
- HBUINT16 format; /* Format identifier */
- MarkGlyphSetsFormat1 format1;
- } u;
- public:
- DEFINE_SIZE_UNION (2, format);
-};
-
-
-/*
- * GDEF -- Glyph Definition
- * https://docs.microsoft.com/en-us/typography/opentype/spec/gdef
- */
-
-
-struct GDEF
-{
- static constexpr hb_tag_t tableTag = HB_OT_TAG_GDEF;
-
- enum GlyphClasses {
- UnclassifiedGlyph = 0,
- BaseGlyph = 1,
- LigatureGlyph = 2,
- MarkGlyph = 3,
- ComponentGlyph = 4
- };
-
- bool has_data () const { return version.to_int (); }
- bool has_glyph_classes () const { return glyphClassDef != 0; }
- unsigned int get_glyph_class (hb_codepoint_t glyph) const
- { return (this+glyphClassDef).get_class (glyph); }
- void get_glyphs_in_class (unsigned int klass, hb_set_t *glyphs) const
- { (this+glyphClassDef).collect_class (glyphs, klass); }
-
- bool has_mark_attachment_types () const { return markAttachClassDef != 0; }
- unsigned int get_mark_attachment_type (hb_codepoint_t glyph) const
- { return (this+markAttachClassDef).get_class (glyph); }
-
- bool has_attach_points () const { return attachList != 0; }
- unsigned int get_attach_points (hb_codepoint_t glyph_id,
- unsigned int start_offset,
- unsigned int *point_count /* IN/OUT */,
- unsigned int *point_array /* OUT */) const
- { return (this+attachList).get_attach_points (glyph_id, start_offset, point_count, point_array); }
-
- bool has_lig_carets () const { return ligCaretList != 0; }
- unsigned int get_lig_carets (hb_font_t *font,
- hb_direction_t direction,
- hb_codepoint_t glyph_id,
- unsigned int start_offset,
- unsigned int *caret_count /* IN/OUT */,
- hb_position_t *caret_array /* OUT */) const
- { return (this+ligCaretList).get_lig_carets (font,
- direction, glyph_id, get_var_store(),
- start_offset, caret_count, caret_array); }
-
- bool has_mark_sets () const { return version.to_int () >= 0x00010002u && markGlyphSetsDef != 0; }
- bool mark_set_covers (unsigned int set_index, hb_codepoint_t glyph_id) const
- { return version.to_int () >= 0x00010002u && (this+markGlyphSetsDef).covers (set_index, glyph_id); }
-
- bool has_var_store () const { return version.to_int () >= 0x00010003u && varStore != 0; }
- const VariationStore &get_var_store () const
- { return version.to_int () >= 0x00010003u ? this+varStore : Null (VariationStore); }
-
- /* glyph_props is a 16-bit integer where the lower 8-bit have bits representing
- * glyph class and other bits, and high 8-bit the mark attachment type (if any).
- * Not to be confused with lookup_props which is very similar. */
- unsigned int get_glyph_props (hb_codepoint_t glyph) const
- {
- unsigned int klass = get_glyph_class (glyph);
-
- static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH == (unsigned int) LookupFlag::IgnoreBaseGlyphs), "");
- static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE == (unsigned int) LookupFlag::IgnoreLigatures), "");
- static_assert (((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_MARK == (unsigned int) LookupFlag::IgnoreMarks), "");
-
- switch (klass) {
- default: return 0;
- case BaseGlyph: return HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH;
- case LigatureGlyph: return HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE;
- case MarkGlyph:
- klass = get_mark_attachment_type (glyph);
- return HB_OT_LAYOUT_GLYPH_PROPS_MARK | (klass << 8);
- }
- }
-
- HB_INTERNAL bool is_blocklisted (hb_blob_t *blob,
- hb_face_t *face) const;
-
- struct accelerator_t
- {
- accelerator_t (hb_face_t *face)
- {
- table = hb_sanitize_context_t ().reference_table<GDEF> (face);
- if (unlikely (table->is_blocklisted (table.get_blob (), face)))
- {
- hb_blob_destroy (table.get_blob ());
- table = hb_blob_get_empty ();
- }
- }
- ~accelerator_t () { table.destroy (); }
-
- hb_blob_ptr_t<GDEF> table;
- };
-
- unsigned int get_size () const
- {
- return min_size +
- (version.to_int () >= 0x00010002u ? markGlyphSetsDef.static_size : 0) +
- (version.to_int () >= 0x00010003u ? varStore.static_size : 0);
- }
-
- void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
- { (this+ligCaretList).collect_variation_indices (c); }
-
- void remap_layout_variation_indices (const hb_set_t *layout_variation_indices,
- hb_map_t *layout_variation_idx_map /* OUT */) const
- {
- if (version.to_int () < 0x00010003u || !varStore) return;
- if (layout_variation_indices->is_empty ()) return;
-
- unsigned new_major = 0, new_minor = 0;
- unsigned last_major = (layout_variation_indices->get_min ()) >> 16;
- for (unsigned idx : layout_variation_indices->iter ())
- {
- uint16_t major = idx >> 16;
- if (major >= (this+varStore).get_sub_table_count ()) break;
- if (major != last_major)
- {
- new_minor = 0;
- ++new_major;
- }
-
- unsigned new_idx = (new_major << 16) + new_minor;
- layout_variation_idx_map->set (idx, new_idx);
- ++new_minor;
- last_major = major;
- }
- }
-
- bool subset (hb_subset_context_t *c) const
- {
- TRACE_SUBSET (this);
- auto *out = c->serializer->embed (*this);
- if (unlikely (!out)) return_trace (false);
-
- bool subset_glyphclassdef = out->glyphClassDef.serialize_subset (c, glyphClassDef, this, nullptr, false, true);
- bool subset_attachlist = out->attachList.serialize_subset (c, attachList, this);
- bool subset_ligcaretlist = out->ligCaretList.serialize_subset (c, ligCaretList, this);
- bool subset_markattachclassdef = out->markAttachClassDef.serialize_subset (c, markAttachClassDef, this, nullptr, false, true);
-
- bool subset_markglyphsetsdef = true;
- if (version.to_int () >= 0x00010002u)
- {
- subset_markglyphsetsdef = out->markGlyphSetsDef.serialize_subset (c, markGlyphSetsDef, this);
- if (!subset_markglyphsetsdef &&
- version.to_int () == 0x00010002u)
- out->version.minor = 0;
- }
-
- bool subset_varstore = true;
- if (version.to_int () >= 0x00010003u)
- {
- subset_varstore = out->varStore.serialize_subset (c, varStore, this);
- if (!subset_varstore && version.to_int () == 0x00010003u)
- out->version.minor = 2;
- }
-
- return_trace (subset_glyphclassdef || subset_attachlist ||
- subset_ligcaretlist || subset_markattachclassdef ||
- (out->version.to_int () >= 0x00010002u && subset_markglyphsetsdef) ||
- (out->version.to_int () >= 0x00010003u && subset_varstore));
- }
-
- bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (version.sanitize (c) &&
- likely (version.major == 1) &&
- glyphClassDef.sanitize (c, this) &&
- attachList.sanitize (c, this) &&
- ligCaretList.sanitize (c, this) &&
- markAttachClassDef.sanitize (c, this) &&
- (version.to_int () < 0x00010002u || markGlyphSetsDef.sanitize (c, this)) &&
- (version.to_int () < 0x00010003u || varStore.sanitize (c, this)));
- }
-
- protected:
- FixedVersion<>version; /* Version of the GDEF table--currently
- * 0x00010003u */
- Offset16To<ClassDef>
- glyphClassDef; /* Offset to class definition table
- * for glyph type--from beginning of
- * GDEF header (may be Null) */
- Offset16To<AttachList>
- attachList; /* Offset to list of glyphs with
- * attachment points--from beginning
- * of GDEF header (may be Null) */
- Offset16To<LigCaretList>
- ligCaretList; /* Offset to list of positioning points
- * for ligature carets--from beginning
- * of GDEF header (may be Null) */
- Offset16To<ClassDef>
- markAttachClassDef; /* Offset to class definition table for
- * mark attachment type--from beginning
- * of GDEF header (may be Null) */
- Offset16To<MarkGlyphSets>
- markGlyphSetsDef; /* Offset to the table of mark set
- * definitions--from beginning of GDEF
- * header (may be NULL). Introduced
- * in version 0x00010002. */
- Offset32To<VariationStore>
- varStore; /* Offset to the table of Item Variation
- * Store--from beginning of GDEF
- * header (may be NULL). Introduced
- * in version 0x00010003. */
- public:
- DEFINE_SIZE_MIN (12);
-};
-
-struct GDEF_accelerator_t : GDEF::accelerator_t {
- GDEF_accelerator_t (hb_face_t *face) : GDEF::accelerator_t (face) {}
-};
-
-} /* namespace OT */
-
+#include "OT/Layout/GDEF/GDEF.hh"
#endif /* HB_OT_LAYOUT_GDEF_TABLE_HH */
projects / platform / upstream / harfbuzz.git / blobdiff