Move GDEF table to src/OT/Layout/GDEF
This commit is contained in:
parent
f89fa6dcfe
commit
e25e4c9a52
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@ -112,6 +112,7 @@ HB_BASE_sources = \
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OT/Layout/Common/CoverageFormat1.hh \
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OT/Layout/Common/CoverageFormat2.hh \
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OT/Layout/Common/RangeRecord.hh \
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OT/Layout/GDEF/GDEF.hh \
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OT/Layout/GPOS/AnchorFormat1.hh \
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OT/Layout/GPOS/AnchorFormat2.hh \
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OT/Layout/GPOS/AnchorFormat3.hh \
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@ -0,0 +1,918 @@
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/*
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* Copyright © 2007,2008,2009 Red Hat, Inc.
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* Copyright © 2010,2011,2012 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef OT_LAYOUT_GDEF_GDEF_HH
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#define OT_LAYOUT_GDEF_GDEF_HH
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#include "hb-ot-layout-common.hh"
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#include "hb-font.hh"
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namespace OT {
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/*
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* Attachment List Table
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*/
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/* Array of contour point indices--in increasing numerical order */
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struct AttachPoint : Array16Of<HBUINT16>
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{
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!out)) return_trace (false);
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return_trace (out->serialize (c->serializer, + iter ()));
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}
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};
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struct AttachList
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{
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unsigned int get_attach_points (hb_codepoint_t glyph_id,
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unsigned int start_offset,
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unsigned int *point_count /* IN/OUT */,
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unsigned int *point_array /* OUT */) const
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{
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unsigned int index = (this+coverage).get_coverage (glyph_id);
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if (index == NOT_COVERED)
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{
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if (point_count)
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*point_count = 0;
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return 0;
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}
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const AttachPoint &points = this+attachPoint[index];
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if (point_count)
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{
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+ points.as_array ().sub_array (start_offset, point_count)
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| hb_sink (hb_array (point_array, *point_count))
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;
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}
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return points.len;
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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hb_sorted_vector_t<hb_codepoint_t> new_coverage;
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+ hb_zip (this+coverage, attachPoint)
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| hb_filter (glyphset, hb_first)
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| hb_filter (subset_offset_array (c, out->attachPoint, this), hb_second)
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| hb_map (hb_first)
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| hb_map (glyph_map)
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| hb_sink (new_coverage)
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;
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out->coverage.serialize_serialize (c->serializer, new_coverage.iter ());
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return_trace (bool (new_coverage));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (coverage.sanitize (c, this) && attachPoint.sanitize (c, this));
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}
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protected:
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Offset16To<Coverage>
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coverage; /* Offset to Coverage table -- from
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* beginning of AttachList table */
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Array16OfOffset16To<AttachPoint>
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attachPoint; /* Array of AttachPoint tables
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* in Coverage Index order */
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public:
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DEFINE_SIZE_ARRAY (4, attachPoint);
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};
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/*
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* Ligature Caret Table
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*/
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struct CaretValueFormat1
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{
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friend struct CaretValue;
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (this);
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if (unlikely (!out)) return_trace (false);
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return_trace (true);
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}
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private:
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hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction) const
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{
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return HB_DIRECTION_IS_HORIZONTAL (direction) ? font->em_scale_x (coordinate) : font->em_scale_y (coordinate);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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protected:
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HBUINT16 caretValueFormat; /* Format identifier--format = 1 */
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FWORD coordinate; /* X or Y value, in design units */
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct CaretValueFormat2
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{
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friend struct CaretValue;
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (this);
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if (unlikely (!out)) return_trace (false);
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return_trace (true);
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}
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private:
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hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction, hb_codepoint_t glyph_id) const
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{
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hb_position_t x, y;
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font->get_glyph_contour_point_for_origin (glyph_id, caretValuePoint, direction, &x, &y);
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return HB_DIRECTION_IS_HORIZONTAL (direction) ? x : y;
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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protected:
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HBUINT16 caretValueFormat; /* Format identifier--format = 2 */
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HBUINT16 caretValuePoint; /* Contour point index on glyph */
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct CaretValueFormat3
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{
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friend struct CaretValue;
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hb_position_t get_caret_value (hb_font_t *font, hb_direction_t direction,
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const VariationStore &var_store) const
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{
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return HB_DIRECTION_IS_HORIZONTAL (direction) ?
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font->em_scale_x (coordinate) + (this+deviceTable).get_x_delta (font, var_store) :
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font->em_scale_y (coordinate) + (this+deviceTable).get_y_delta (font, var_store);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!out)) return_trace (false);
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if (!c->serializer->embed (caretValueFormat)) return_trace (false);
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if (!c->serializer->embed (coordinate)) return_trace (false);
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unsigned varidx = (this+deviceTable).get_variation_index ();
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if (c->plan->layout_variation_idx_delta_map.has (varidx))
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{
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int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (varidx));
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if (delta != 0)
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{
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if (!c->serializer->check_assign (out->coordinate, coordinate + delta, HB_SERIALIZE_ERROR_INT_OVERFLOW))
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return_trace (false);
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}
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}
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if (c->plan->all_axes_pinned)
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return_trace (c->serializer->check_assign (out->caretValueFormat, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW));
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if (!c->serializer->embed (deviceTable))
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return_trace (false);
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return_trace (out->deviceTable.serialize_copy (c->serializer, deviceTable, this, c->serializer->to_bias (out),
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hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map));
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}
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void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
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{ (this+deviceTable).collect_variation_indices (c); }
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && deviceTable.sanitize (c, this));
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}
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protected:
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HBUINT16 caretValueFormat; /* Format identifier--format = 3 */
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FWORD coordinate; /* X or Y value, in design units */
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Offset16To<Device>
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deviceTable; /* Offset to Device table for X or Y
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* value--from beginning of CaretValue
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* table */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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struct CaretValue
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{
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hb_position_t get_caret_value (hb_font_t *font,
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hb_direction_t direction,
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hb_codepoint_t glyph_id,
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const VariationStore &var_store) const
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{
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switch (u.format) {
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case 1: return u.format1.get_caret_value (font, direction);
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case 2: return u.format2.get_caret_value (font, direction, glyph_id);
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case 3: return u.format3.get_caret_value (font, direction, var_store);
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default:return 0;
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}
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}
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template <typename context_t, typename ...Ts>
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typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
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{
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if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value ();
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TRACE_DISPATCH (this, u.format);
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switch (u.format) {
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case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
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case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
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case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...));
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default:return_trace (c->default_return_value ());
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}
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}
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void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
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{
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switch (u.format) {
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case 1:
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case 2:
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return;
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case 3:
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u.format3.collect_variation_indices (c);
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return;
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default: return;
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}
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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if (!u.format.sanitize (c)) return_trace (false);
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switch (u.format) {
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case 1: return_trace (u.format1.sanitize (c));
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case 2: return_trace (u.format2.sanitize (c));
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case 3: return_trace (u.format3.sanitize (c));
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default:return_trace (true);
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}
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}
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protected:
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union {
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HBUINT16 format; /* Format identifier */
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CaretValueFormat1 format1;
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CaretValueFormat2 format2;
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CaretValueFormat3 format3;
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} u;
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public:
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DEFINE_SIZE_UNION (2, format);
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};
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struct LigGlyph
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{
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unsigned get_lig_carets (hb_font_t *font,
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hb_direction_t direction,
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hb_codepoint_t glyph_id,
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const VariationStore &var_store,
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unsigned start_offset,
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unsigned *caret_count /* IN/OUT */,
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hb_position_t *caret_array /* OUT */) const
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{
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if (caret_count)
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{
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+ carets.as_array ().sub_array (start_offset, caret_count)
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| hb_map (hb_add (this))
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| hb_map ([&] (const CaretValue &value) { return value.get_caret_value (font, direction, glyph_id, var_store); })
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| hb_sink (hb_array (caret_array, *caret_count))
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;
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}
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return carets.len;
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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+ hb_iter (carets)
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| hb_apply (subset_offset_array (c, out->carets, this))
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;
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return_trace (bool (out->carets));
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}
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void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
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{
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for (const Offset16To<CaretValue>& offset : carets.iter ())
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(this+offset).collect_variation_indices (c);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (carets.sanitize (c, this));
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}
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protected:
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Array16OfOffset16To<CaretValue>
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carets; /* Offset array of CaretValue tables
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* --from beginning of LigGlyph table
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* --in increasing coordinate order */
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public:
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DEFINE_SIZE_ARRAY (2, carets);
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};
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struct LigCaretList
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{
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unsigned int get_lig_carets (hb_font_t *font,
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hb_direction_t direction,
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hb_codepoint_t glyph_id,
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const VariationStore &var_store,
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unsigned int start_offset,
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unsigned int *caret_count /* IN/OUT */,
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hb_position_t *caret_array /* OUT */) const
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{
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unsigned int index = (this+coverage).get_coverage (glyph_id);
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if (index == NOT_COVERED)
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{
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if (caret_count)
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*caret_count = 0;
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return 0;
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}
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const LigGlyph &lig_glyph = this+ligGlyph[index];
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return lig_glyph.get_lig_carets (font, direction, glyph_id, var_store, start_offset, caret_count, caret_array);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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hb_sorted_vector_t<hb_codepoint_t> new_coverage;
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+ hb_zip (this+coverage, ligGlyph)
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| hb_filter (glyphset, hb_first)
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| hb_filter (subset_offset_array (c, out->ligGlyph, this), hb_second)
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| hb_map (hb_first)
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| hb_map (glyph_map)
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| hb_sink (new_coverage)
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;
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out->coverage.serialize_serialize (c->serializer, new_coverage.iter ());
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return_trace (bool (new_coverage));
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}
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void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
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{
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+ hb_zip (this+coverage, ligGlyph)
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| hb_filter (c->glyph_set, hb_first)
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| hb_map (hb_second)
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| hb_map (hb_add (this))
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| hb_apply ([c] (const LigGlyph& _) { _.collect_variation_indices (c); })
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;
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (coverage.sanitize (c, this) && ligGlyph.sanitize (c, this));
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}
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protected:
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Offset16To<Coverage>
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coverage; /* Offset to Coverage table--from
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* beginning of LigCaretList table */
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Array16OfOffset16To<LigGlyph>
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ligGlyph; /* Array of LigGlyph tables
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* in Coverage Index order */
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public:
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DEFINE_SIZE_ARRAY (4, ligGlyph);
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};
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struct MarkGlyphSetsFormat1
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{
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bool covers (unsigned int set_index, hb_codepoint_t glyph_id) const
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{ return (this+coverage[set_index]).get_coverage (glyph_id) != NOT_COVERED; }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->start_embed (*this);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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out->format = format;
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bool ret = true;
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for (const Offset32To<Coverage>& offset : coverage.iter ())
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{
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auto *o = out->coverage.serialize_append (c->serializer);
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if (unlikely (!o))
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{
|
||||
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
|
||||
*/
|
||||
|
||||
|
||||
template <typename Types>
|
||||
struct GDEFVersion1_2
|
||||
{
|
||||
friend struct GDEF;
|
||||
|
||||
protected:
|
||||
FixedVersion<>version; /* Version of the GDEF table--currently
|
||||
* 0x00010003u */
|
||||
typename Types::template OffsetTo<ClassDef>
|
||||
glyphClassDef; /* Offset to class definition table
|
||||
* for glyph type--from beginning of
|
||||
* GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<AttachList>
|
||||
attachList; /* Offset to list of glyphs with
|
||||
* attachment points--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<LigCaretList>
|
||||
ligCaretList; /* Offset to list of positioning points
|
||||
* for ligature carets--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<ClassDef>
|
||||
markAttachClassDef; /* Offset to class definition table for
|
||||
* mark attachment type--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<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 (4 + 4 * Types::size);
|
||||
|
||||
unsigned int get_size () const
|
||||
{
|
||||
return min_size +
|
||||
(version.to_int () >= 0x00010002u ? markGlyphSetsDef.static_size : 0) +
|
||||
(version.to_int () >= 0x00010003u ? varStore.static_size : 0);
|
||||
}
|
||||
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (version.sanitize (c) &&
|
||||
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)));
|
||||
}
|
||||
|
||||
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 = false;
|
||||
if (version.to_int () >= 0x00010002u)
|
||||
{
|
||||
subset_markglyphsetsdef = out->markGlyphSetsDef.serialize_subset (c, markGlyphSetsDef, this);
|
||||
}
|
||||
|
||||
bool subset_varstore = false;
|
||||
if (version.to_int () >= 0x00010003u)
|
||||
{
|
||||
if (c->plan->all_axes_pinned)
|
||||
out->varStore = 0;
|
||||
else
|
||||
subset_varstore = out->varStore.serialize_subset (c, varStore, this, c->plan->gdef_varstore_inner_maps.as_array ());
|
||||
}
|
||||
|
||||
if (subset_varstore)
|
||||
{
|
||||
out->version.minor = 3;
|
||||
} else if (subset_markglyphsetsdef) {
|
||||
out->version.minor = 2;
|
||||
} else {
|
||||
out->version.minor = 0;
|
||||
}
|
||||
|
||||
return_trace (subset_glyphclassdef || subset_attachlist ||
|
||||
subset_ligcaretlist || subset_markattachclassdef ||
|
||||
(out->version.to_int () >= 0x00010002u && subset_markglyphsetsdef) ||
|
||||
(out->version.to_int () >= 0x00010003u && subset_varstore));
|
||||
}
|
||||
};
|
||||
|
||||
struct GDEF
|
||||
{
|
||||
static constexpr hb_tag_t tableTag = HB_OT_TAG_GDEF;
|
||||
|
||||
enum GlyphClasses {
|
||||
UnclassifiedGlyph = 0,
|
||||
BaseGlyph = 1,
|
||||
LigatureGlyph = 2,
|
||||
MarkGlyph = 3,
|
||||
ComponentGlyph = 4
|
||||
};
|
||||
|
||||
unsigned int get_size () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.get_size ();
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.get_size ();
|
||||
#endif
|
||||
default: return u.version.static_size;
|
||||
}
|
||||
}
|
||||
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
if (unlikely (!u.version.sanitize (c))) return_trace (false);
|
||||
switch (u.version.major) {
|
||||
case 1: return_trace (u.version1.sanitize (c));
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return_trace (u.version2.sanitize (c));
|
||||
#endif
|
||||
default: return_trace (true);
|
||||
}
|
||||
}
|
||||
|
||||
bool subset (hb_subset_context_t *c) const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.subset (c);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.subset (c);
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
|
||||
bool has_glyph_classes () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.glyphClassDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.glyphClassDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const ClassDef &get_glyph_class_def () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.glyphClassDef;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.glyphClassDef;
|
||||
#endif
|
||||
default: return Null(ClassDef);
|
||||
}
|
||||
}
|
||||
bool has_attach_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.attachList != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.attachList != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const AttachList &get_attach_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.attachList;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.attachList;
|
||||
#endif
|
||||
default: return Null(AttachList);
|
||||
}
|
||||
}
|
||||
bool has_lig_carets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.ligCaretList != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.ligCaretList != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const LigCaretList &get_lig_caret_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.ligCaretList;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.ligCaretList;
|
||||
#endif
|
||||
default: return Null(LigCaretList);
|
||||
}
|
||||
}
|
||||
bool has_mark_attachment_types () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.markAttachClassDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.markAttachClassDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const ClassDef &get_mark_attach_class_def () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.markAttachClassDef;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.markAttachClassDef;
|
||||
#endif
|
||||
default: return Null(ClassDef);
|
||||
}
|
||||
}
|
||||
bool has_mark_glyph_sets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010002u && u.version1.markGlyphSetsDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.markGlyphSetsDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const MarkGlyphSets &get_mark_glyph_sets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010002u ? this+u.version1.markGlyphSetsDef : Null(MarkGlyphSets);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.markGlyphSetsDef;
|
||||
#endif
|
||||
default: return Null(MarkGlyphSets);
|
||||
}
|
||||
}
|
||||
bool has_var_store () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010003u && u.version1.varStore != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.varStore != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const VariationStore &get_var_store () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010003u ? this+u.version1.varStore : Null(VariationStore);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.varStore;
|
||||
#endif
|
||||
default: return Null(VariationStore);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool has_data () const { return u.version.to_int (); }
|
||||
unsigned int get_glyph_class (hb_codepoint_t glyph) const
|
||||
{ return get_glyph_class_def ().get_class (glyph); }
|
||||
void get_glyphs_in_class (unsigned int klass, hb_set_t *glyphs) const
|
||||
{ get_glyph_class_def ().collect_class (glyphs, klass); }
|
||||
|
||||
unsigned int get_mark_attachment_type (hb_codepoint_t glyph) const
|
||||
{ return get_mark_attach_class_def ().get_class (glyph); }
|
||||
|
||||
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 get_attach_list ().get_attach_points (glyph_id, start_offset, point_count, point_array); }
|
||||
|
||||
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 get_lig_caret_list ().get_lig_carets (font,
|
||||
direction, glyph_id, get_var_store(),
|
||||
start_offset, caret_count, caret_array); }
|
||||
|
||||
bool mark_set_covers (unsigned int set_index, hb_codepoint_t glyph_id) const
|
||||
{ return get_mark_glyph_sets ().covers (set_index, glyph_id); }
|
||||
|
||||
/* 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 HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED;
|
||||
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;
|
||||
};
|
||||
|
||||
void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
|
||||
{ get_lig_caret_list ().collect_variation_indices (c); }
|
||||
|
||||
void remap_layout_variation_indices (const hb_set_t *layout_variation_indices,
|
||||
hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map /* OUT */) const
|
||||
{
|
||||
if (!has_var_store ()) 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 >= get_var_store ().get_sub_table_count ()) break;
|
||||
if (major != last_major)
|
||||
{
|
||||
new_minor = 0;
|
||||
++new_major;
|
||||
}
|
||||
|
||||
unsigned new_idx = (new_major << 16) + new_minor;
|
||||
if (!layout_variation_idx_delta_map->has (idx))
|
||||
continue;
|
||||
int delta = hb_second (layout_variation_idx_delta_map->get (idx));
|
||||
|
||||
layout_variation_idx_delta_map->set (idx, hb_pair_t<unsigned, int> (new_idx, delta));
|
||||
++new_minor;
|
||||
last_major = major;
|
||||
}
|
||||
}
|
||||
|
||||
protected:
|
||||
union {
|
||||
FixedVersion<> version; /* Version identifier */
|
||||
GDEFVersion1_2<SmallTypes> version1;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
GDEFVersion1_2<MediumTypes> version2;
|
||||
#endif
|
||||
} u;
|
||||
public:
|
||||
DEFINE_SIZE_MIN (4);
|
||||
};
|
||||
|
||||
struct GDEF_accelerator_t : GDEF::accelerator_t {
|
||||
GDEF_accelerator_t (hb_face_t *face) : GDEF::accelerator_t (face) {}
|
||||
};
|
||||
|
||||
} /* namespace OT */
|
||||
|
||||
|
||||
#endif /* OT_LAYOUT_GDEF_GDEF_HH */
|
|
@ -29,890 +29,6 @@
|
|||
#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.as_array ().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->start_embed (*this);
|
||||
if (unlikely (!out)) return_trace (false);
|
||||
if (!c->serializer->embed (caretValueFormat)) return_trace (false);
|
||||
if (!c->serializer->embed (coordinate)) return_trace (false);
|
||||
|
||||
unsigned varidx = (this+deviceTable).get_variation_index ();
|
||||
if (c->plan->layout_variation_idx_delta_map.has (varidx))
|
||||
{
|
||||
int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (varidx));
|
||||
if (delta != 0)
|
||||
{
|
||||
if (!c->serializer->check_assign (out->coordinate, coordinate + delta, HB_SERIALIZE_ERROR_INT_OVERFLOW))
|
||||
return_trace (false);
|
||||
}
|
||||
}
|
||||
|
||||
if (c->plan->all_axes_pinned)
|
||||
return_trace (c->serializer->check_assign (out->caretValueFormat, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW));
|
||||
|
||||
if (!c->serializer->embed (deviceTable))
|
||||
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_delta_map));
|
||||
}
|
||||
|
||||
void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
|
||||
{ (this+deviceTable).collect_variation_indices (c); }
|
||||
|
||||
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
|
||||
{
|
||||
if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value ();
|
||||
TRACE_DISPATCH (this, u.format);
|
||||
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_collect_variation_indices_context_t *c) const
|
||||
{
|
||||
switch (u.format) {
|
||||
case 1:
|
||||
case 2:
|
||||
return;
|
||||
case 3:
|
||||
u.format3.collect_variation_indices (c);
|
||||
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.as_array ().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);
|
||||
}
|
||||
|
||||
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
|
||||
*/
|
||||
|
||||
|
||||
template <typename Types>
|
||||
struct GDEFVersion1_2
|
||||
{
|
||||
friend struct GDEF;
|
||||
|
||||
protected:
|
||||
FixedVersion<>version; /* Version of the GDEF table--currently
|
||||
* 0x00010003u */
|
||||
typename Types::template OffsetTo<ClassDef>
|
||||
glyphClassDef; /* Offset to class definition table
|
||||
* for glyph type--from beginning of
|
||||
* GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<AttachList>
|
||||
attachList; /* Offset to list of glyphs with
|
||||
* attachment points--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<LigCaretList>
|
||||
ligCaretList; /* Offset to list of positioning points
|
||||
* for ligature carets--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<ClassDef>
|
||||
markAttachClassDef; /* Offset to class definition table for
|
||||
* mark attachment type--from beginning
|
||||
* of GDEF header (may be Null) */
|
||||
typename Types::template OffsetTo<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 (4 + 4 * Types::size);
|
||||
|
||||
unsigned int get_size () const
|
||||
{
|
||||
return min_size +
|
||||
(version.to_int () >= 0x00010002u ? markGlyphSetsDef.static_size : 0) +
|
||||
(version.to_int () >= 0x00010003u ? varStore.static_size : 0);
|
||||
}
|
||||
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (version.sanitize (c) &&
|
||||
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)));
|
||||
}
|
||||
|
||||
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 = false;
|
||||
if (version.to_int () >= 0x00010002u)
|
||||
{
|
||||
subset_markglyphsetsdef = out->markGlyphSetsDef.serialize_subset (c, markGlyphSetsDef, this);
|
||||
}
|
||||
|
||||
bool subset_varstore = false;
|
||||
if (version.to_int () >= 0x00010003u)
|
||||
{
|
||||
if (c->plan->all_axes_pinned)
|
||||
out->varStore = 0;
|
||||
else
|
||||
subset_varstore = out->varStore.serialize_subset (c, varStore, this, c->plan->gdef_varstore_inner_maps.as_array ());
|
||||
}
|
||||
|
||||
if (subset_varstore)
|
||||
{
|
||||
out->version.minor = 3;
|
||||
} else if (subset_markglyphsetsdef) {
|
||||
out->version.minor = 2;
|
||||
} else {
|
||||
out->version.minor = 0;
|
||||
}
|
||||
|
||||
return_trace (subset_glyphclassdef || subset_attachlist ||
|
||||
subset_ligcaretlist || subset_markattachclassdef ||
|
||||
(out->version.to_int () >= 0x00010002u && subset_markglyphsetsdef) ||
|
||||
(out->version.to_int () >= 0x00010003u && subset_varstore));
|
||||
}
|
||||
};
|
||||
|
||||
struct GDEF
|
||||
{
|
||||
static constexpr hb_tag_t tableTag = HB_OT_TAG_GDEF;
|
||||
|
||||
enum GlyphClasses {
|
||||
UnclassifiedGlyph = 0,
|
||||
BaseGlyph = 1,
|
||||
LigatureGlyph = 2,
|
||||
MarkGlyph = 3,
|
||||
ComponentGlyph = 4
|
||||
};
|
||||
|
||||
unsigned int get_size () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.get_size ();
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.get_size ();
|
||||
#endif
|
||||
default: return u.version.static_size;
|
||||
}
|
||||
}
|
||||
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
if (unlikely (!u.version.sanitize (c))) return_trace (false);
|
||||
switch (u.version.major) {
|
||||
case 1: return_trace (u.version1.sanitize (c));
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return_trace (u.version2.sanitize (c));
|
||||
#endif
|
||||
default: return_trace (true);
|
||||
}
|
||||
}
|
||||
|
||||
bool subset (hb_subset_context_t *c) const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.subset (c);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.subset (c);
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
|
||||
bool has_glyph_classes () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.glyphClassDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.glyphClassDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const ClassDef &get_glyph_class_def () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.glyphClassDef;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.glyphClassDef;
|
||||
#endif
|
||||
default: return Null(ClassDef);
|
||||
}
|
||||
}
|
||||
bool has_attach_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.attachList != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.attachList != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const AttachList &get_attach_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.attachList;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.attachList;
|
||||
#endif
|
||||
default: return Null(AttachList);
|
||||
}
|
||||
}
|
||||
bool has_lig_carets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.ligCaretList != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.ligCaretList != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const LigCaretList &get_lig_caret_list () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.ligCaretList;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.ligCaretList;
|
||||
#endif
|
||||
default: return Null(LigCaretList);
|
||||
}
|
||||
}
|
||||
bool has_mark_attachment_types () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version1.markAttachClassDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.markAttachClassDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const ClassDef &get_mark_attach_class_def () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return this+u.version1.markAttachClassDef;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.markAttachClassDef;
|
||||
#endif
|
||||
default: return Null(ClassDef);
|
||||
}
|
||||
}
|
||||
bool has_mark_glyph_sets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010002u && u.version1.markGlyphSetsDef != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.markGlyphSetsDef != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const MarkGlyphSets &get_mark_glyph_sets () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010002u ? this+u.version1.markGlyphSetsDef : Null(MarkGlyphSets);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.markGlyphSetsDef;
|
||||
#endif
|
||||
default: return Null(MarkGlyphSets);
|
||||
}
|
||||
}
|
||||
bool has_var_store () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010003u && u.version1.varStore != 0;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return u.version2.varStore != 0;
|
||||
#endif
|
||||
default: return false;
|
||||
}
|
||||
}
|
||||
const VariationStore &get_var_store () const
|
||||
{
|
||||
switch (u.version.major) {
|
||||
case 1: return u.version.to_int () >= 0x00010003u ? this+u.version1.varStore : Null(VariationStore);
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
case 2: return this+u.version2.varStore;
|
||||
#endif
|
||||
default: return Null(VariationStore);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool has_data () const { return u.version.to_int (); }
|
||||
unsigned int get_glyph_class (hb_codepoint_t glyph) const
|
||||
{ return get_glyph_class_def ().get_class (glyph); }
|
||||
void get_glyphs_in_class (unsigned int klass, hb_set_t *glyphs) const
|
||||
{ get_glyph_class_def ().collect_class (glyphs, klass); }
|
||||
|
||||
unsigned int get_mark_attachment_type (hb_codepoint_t glyph) const
|
||||
{ return get_mark_attach_class_def ().get_class (glyph); }
|
||||
|
||||
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 get_attach_list ().get_attach_points (glyph_id, start_offset, point_count, point_array); }
|
||||
|
||||
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 get_lig_caret_list ().get_lig_carets (font,
|
||||
direction, glyph_id, get_var_store(),
|
||||
start_offset, caret_count, caret_array); }
|
||||
|
||||
bool mark_set_covers (unsigned int set_index, hb_codepoint_t glyph_id) const
|
||||
{ return get_mark_glyph_sets ().covers (set_index, glyph_id); }
|
||||
|
||||
/* 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 HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED;
|
||||
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;
|
||||
};
|
||||
|
||||
void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
|
||||
{ get_lig_caret_list ().collect_variation_indices (c); }
|
||||
|
||||
void remap_layout_variation_indices (const hb_set_t *layout_variation_indices,
|
||||
hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map /* OUT */) const
|
||||
{
|
||||
if (!has_var_store ()) 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 >= get_var_store ().get_sub_table_count ()) break;
|
||||
if (major != last_major)
|
||||
{
|
||||
new_minor = 0;
|
||||
++new_major;
|
||||
}
|
||||
|
||||
unsigned new_idx = (new_major << 16) + new_minor;
|
||||
if (!layout_variation_idx_delta_map->has (idx))
|
||||
continue;
|
||||
int delta = hb_second (layout_variation_idx_delta_map->get (idx));
|
||||
|
||||
layout_variation_idx_delta_map->set (idx, hb_pair_t<unsigned, int> (new_idx, delta));
|
||||
++new_minor;
|
||||
last_major = major;
|
||||
}
|
||||
}
|
||||
|
||||
protected:
|
||||
union {
|
||||
FixedVersion<> version; /* Version identifier */
|
||||
GDEFVersion1_2<SmallTypes> version1;
|
||||
#ifndef HB_NO_BEYOND_64K
|
||||
GDEFVersion1_2<MediumTypes> version2;
|
||||
#endif
|
||||
} u;
|
||||
public:
|
||||
DEFINE_SIZE_MIN (4);
|
||||
};
|
||||
|
||||
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 */
|
||||
|
|
|
@ -113,6 +113,7 @@ hb_base_sources = files(
|
|||
'OT/Layout/Common/CoverageFormat1.hh',
|
||||
'OT/Layout/Common/CoverageFormat2.hh',
|
||||
'OT/Layout/Common/RangeRecord.hh',
|
||||
'OT/Layout/GDEF/GDEF.hh',
|
||||
'OT/Layout/GPOS/AnchorFormat1.hh',
|
||||
'OT/Layout/GPOS/AnchorFormat2.hh',
|
||||
'OT/Layout/GPOS/AnchorFormat3.hh',
|
||||
|
|
Loading…
Reference in New Issue