/src/harfbuzz/src/OT/Layout/GPOS/SinglePosFormat1.hh

Source
#ifndef OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH
#define OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH

#include "Common.hh"
#include "ValueFormat.hh"

namespace OT {
namespace Layout {
namespace GPOS_impl {

struct SinglePosFormat1 : ValueBase
{
  protected:
  HBUINT16      format;                 /* Format identifier--format = 1 */
  Offset16To<Coverage>
                coverage;               /* Offset to Coverage table--from
                                         * beginning of subtable */
  ValueFormat   valueFormat;            /* Defines the types of data in the
                                         * ValueRecord */
  ValueRecord   values;                 /* Defines positioning
                                         * value(s)--applied to all glyphs in
                                         * the Coverage table */
  public:
  DEFINE_SIZE_ARRAY (6, values);

  bool sanitize (hb_sanitize_context_t *c) const
  {
    TRACE_SANITIZE (this);
    return_trace (c->check_struct (this) &&
                  coverage.sanitize (c, this) &&
      hb_barrier () &&
                  /* The coverage  table may use a range to represent a set
                   * of glyphs, which means a small number of bytes can
                   * generate a large glyph set. Manually modify the
                   * sanitizer max ops to take this into account.
                   *
                   * Note: This check *must* be right after coverage sanitize. */
                  c->check_ops ((this + coverage).get_population () >> 1) &&
                  valueFormat.sanitize_value (c, this, values));

  }

  bool intersects (const hb_set_t *glyphs) const
  { return (this+coverage).intersects (glyphs); }

  void closure_lookups (hb_closure_lookups_context_t *c) const {}
  void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
  {
    if (!valueFormat.has_device ()) return;

    hb_set_t intersection;
    (this+coverage).intersect_set (*c->glyph_set, intersection);
    if (!intersection) return;

    valueFormat.collect_variation_indices (c, this, values.as_array (valueFormat.get_len ()));
  }

  void collect_glyphs (hb_collect_glyphs_context_t *c) const
  { if (unlikely (!(this+coverage).collect_coverage (c->input))) return; }

  const Coverage &get_coverage () const { return this+coverage; }

  ValueFormat get_value_format () const { return valueFormat; }

  bool apply (hb_ot_apply_context_t *c) const
  {
    TRACE_APPLY (this);
    hb_buffer_t *buffer = c->buffer;
    unsigned int index = (this+coverage).get_coverage  (buffer->cur().codepoint);
    if (index == NOT_COVERED) return_trace (false);

    if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
    {
      c->buffer->message (c->font,
        "positioning glyph at %u",
        c->buffer->idx);
    }

    valueFormat.apply_value (c, this, values, buffer->cur_pos());

    if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
    {
      c->buffer->message (c->font,
        "positioned glyph at %u",
        c->buffer->idx);
    }

    buffer->idx++;
    return_trace (true);
  }

  bool
  position_single (hb_font_t           *font,
       hb_blob_t           *table_blob,
       hb_direction_t       direction,
       hb_codepoint_t       gid,
       hb_glyph_position_t &pos) const
  {
    unsigned int index = (this+coverage).get_coverage  (gid);
    if (likely (index == NOT_COVERED)) return false;

    /* This is ugly... */
    hb_buffer_t buffer {};
    buffer.props.direction = direction;
    OT::hb_ot_apply_context_t c (1, font, &buffer, table_blob);

    valueFormat.apply_value (&c, this, values, pos);
    return true;
  }

  template<typename Iterator,
      typename SrcLookup,
      hb_requires (hb_is_iterator (Iterator))>
  void serialize (hb_serialize_context_t *c,
                  const SrcLookup *src,
                  Iterator it,
                  ValueFormat newFormat,
                  const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map)
  {
    if (unlikely (!c->extend_min (this))) return;
    if (unlikely (!c->check_assign (valueFormat,
                                    newFormat,
                                    HB_SERIALIZE_ERROR_INT_OVERFLOW))) return;

    for (const hb_array_t<const Value>& _ : + it | hb_map (hb_second))
    {
      src->get_value_format ().copy_values (c, newFormat, src,  &_, layout_variation_idx_delta_map);
      // Only serialize the first entry in the iterator, the rest are assumed to
      // be the same.
      break;
    }

    auto glyphs =
    + it
    | hb_map_retains_sorting (hb_first)
    ;

    coverage.serialize_serialize (c, glyphs);
  }

  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;

    hb_set_t intersection;
    (this+coverage).intersect_set (glyphset, intersection);

    unsigned new_format = valueFormat;

    if (c->plan->normalized_coords)
    {
      new_format = valueFormat.get_effective_format (values.arrayZ, false, false, this, &c->plan->layout_variation_idx_delta_map);
    }
    /* do not strip hints for VF */
    else if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING)
    {
      hb_blob_t* blob = hb_face_reference_table (c->plan->source, HB_TAG ('f','v','a','r'));
      bool has_fvar = (blob != hb_blob_get_empty ());
      hb_blob_destroy (blob);

      bool strip = !has_fvar;
      /* special case: strip hints when a VF has no GDEF varstore after
       * subsetting*/
      if (has_fvar && !c->plan->has_gdef_varstore)
        strip = true;
      new_format = valueFormat.get_effective_format (values.arrayZ,
                                                     strip, /* strip hints */
                                                     true, /* strip empty */
                                                     this, nullptr);
    }

    auto it =
    + hb_iter (intersection)
    | hb_map_retains_sorting (glyph_map)
    | hb_zip (hb_repeat (values.as_array (valueFormat.get_len ())))
    ;

    bool ret = bool (it);
    SinglePos_serialize (c->serializer, this, it, &c->plan->layout_variation_idx_delta_map, new_format);
    return_trace (ret);
  }
};

}
}
}

#endif /* OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH */

Line	Count	Source
1		#ifndef OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH
2		#define OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH
3
4		#include "Common.hh"
5		#include "ValueFormat.hh"
6
7		namespace OT {
8		namespace Layout {
9		namespace GPOS_impl {
10
11		struct SinglePosFormat1 : ValueBase
12		{
13		protected:
14		HBUINT16 format; /* Format identifier--format = 1 */
15		Offset16To<Coverage>
16		coverage; /* Offset to Coverage table--from
17		* beginning of subtable */
18		ValueFormat valueFormat; /* Defines the types of data in the
19		* ValueRecord */
20		ValueRecord values; /* Defines positioning
21		* value(s)--applied to all glyphs in
22		* the Coverage table */
23		public:
24		DEFINE_SIZE_ARRAY (6, values);
25
26		bool sanitize (hb_sanitize_context_t *c) const
27	0	{
28	0	TRACE_SANITIZE (this);
29	0	return_trace (c->check_struct (this) &&
30	0	coverage.sanitize (c, this) &&
31	0	hb_barrier () &&
32		/* The coverage table may use a range to represent a set
33		* of glyphs, which means a small number of bytes can
34		* generate a large glyph set. Manually modify the
35		* sanitizer max ops to take this into account.
36		*
37		* Note: This check must be right after coverage sanitize. */
38	0	c->check_ops ((this + coverage).get_population () >> 1) &&
39	0	valueFormat.sanitize_value (c, this, values));
40
41	0	}
42
43		bool intersects (const hb_set_t *glyphs) const
44	0	{ return (this+coverage).intersects (glyphs); }
45
46	0	void closure_lookups (hb_closure_lookups_context_t *c) const {}
47		void collect_variation_indices (hb_collect_variation_indices_context_t *c) const
48	0	{
49	0	if (!valueFormat.has_device ()) return;
50	0
51	0	hb_set_t intersection;
52	0	(this+coverage).intersect_set (*c->glyph_set, intersection);
53	0	if (!intersection) return;
54	0
55	0	valueFormat.collect_variation_indices (c, this, values.as_array (valueFormat.get_len ()));
56	0	}
57
58		void collect_glyphs (hb_collect_glyphs_context_t *c) const
59	0	{ if (unlikely (!(this+coverage).collect_coverage (c->input))) return; }
60
61	0	const Coverage &get_coverage () const { return this+coverage; }
62
63	0	ValueFormat get_value_format () const { return valueFormat; }
64
65		bool apply (hb_ot_apply_context_t *c) const
66	0	{
67	0	TRACE_APPLY (this);
68	0	hb_buffer_t *buffer = c->buffer;
69	0	unsigned int index = (this+coverage).get_coverage (buffer->cur().codepoint);
70	0	if (index == NOT_COVERED) return_trace (false);
71
72	0	if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
73	0	{
74	0	c->buffer->message (c->font,
75	0	"positioning glyph at %u",
76	0	c->buffer->idx);
77	0	}
78
79	0	valueFormat.apply_value (c, this, values, buffer->cur_pos());
80
81	0	if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
82	0	{
83	0	c->buffer->message (c->font,
84	0	"positioned glyph at %u",
85	0	c->buffer->idx);
86	0	}
87
88	0	buffer->idx++;
89	0	return_trace (true);
90	0	}
91
92		bool
93		position_single (hb_font_t *font,
94		hb_blob_t *table_blob,
95		hb_direction_t direction,
96		hb_codepoint_t gid,
97		hb_glyph_position_t &pos) const
98	0	{
99	0	unsigned int index = (this+coverage).get_coverage (gid);
100	0	if (likely (index == NOT_COVERED)) return false;
101
102		/* This is ugly... */
103	0	hb_buffer_t buffer {};
104	0	buffer.props.direction = direction;
105	0	OT::hb_ot_apply_context_t c (1, font, &buffer, table_blob);
106
107	0	valueFormat.apply_value (&c, this, values, pos);
108	0	return true;
109	0	}
110
111		template<typename Iterator,
112		typename SrcLookup,
113		hb_requires (hb_is_iterator (Iterator))>
114		void serialize (hb_serialize_context_t *c,
115		const SrcLookup *src,
116		Iterator it,
117		ValueFormat newFormat,
118		const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map)
119	0	{
120	0	if (unlikely (!c->extend_min (this))) return;
121	0	if (unlikely (!c->check_assign (valueFormat,
122	0	newFormat,
123	0	HB_SERIALIZE_ERROR_INT_OVERFLOW))) return;
124	0
125	0	for (const hb_array_t<const Value>& _ : + it \| hb_map (hb_second))
126	0	{
127	0	src->get_value_format ().copy_values (c, newFormat, src, &_, layout_variation_idx_delta_map);
128	0	// Only serialize the first entry in the iterator, the rest are assumed to
129	0	// be the same.
130	0	break;
131	0	}
132	0
133	0	auto glyphs =
134	0	+ it
135	0	\| hb_map_retains_sorting (hb_first)
136	0	;
137	0
138	0	coverage.serialize_serialize (c, glyphs);
139	0	} Unexecuted instantiation: _ZN2OT6Layout9GPOS_impl16SinglePosFormat19serializeI13hb_zip_iter_tI13hb_map_iter_tIN23hb_bit_set_invertible_t6iter_tERK8hb_map_tL24hb_function_sortedness_t1ELPv0EE16hb_repeat_iter_tI10hb_array_tIKNS_7NumTypeILb1EtLj2EEEEEES2_TnPN12hb_enable_ifIXsr17hb_is_iterator_ofIT_NSN_6item_tEEE5valueEvE4typeELSC_0EEEvP22hb_serialize_context_tPKT0_SN_NS1_11ValueFormatEPK12hb_hashmap_tIj9hb_pair_tIjiELb0EE Unexecuted instantiation: hb-ot-face.cc:_ZN2OT6Layout9GPOS_impl16SinglePosFormat19serializeI13hb_map_iter_tI16hb_filter_iter_tI13hb_zip_iter_tINS0_6Common8Coverage6iter_tE15hb_range_iter_tIjjEERK8hb_set_tRK3$_6LPv0EEZNKS1_16SinglePosFormat26subsetEP19hb_subset_context_tEUlRK9hb_pair_tIjjEE_L24hb_function_sortedness_t1ELSJ_0EESL_TnPN12hb_enable_ifIXsr17hb_is_iterator_ofIT_NSW_6item_tEEE5valueEvE4typeELSJ_0EEEvP22hb_serialize_context_tPKT0_SW_NS1_11ValueFormatEPK12hb_hashmap_tIjSO_IjiELb0EE Unexecuted instantiation: hb-aat-layout.cc:_ZN2OT6Layout9GPOS_impl16SinglePosFormat19serializeI13hb_map_iter_tI16hb_filter_iter_tI13hb_zip_iter_tINS0_6Common8Coverage6iter_tE15hb_range_iter_tIjjEERK8hb_set_tRK3$_6LPv0EEZNKS1_16SinglePosFormat26subsetEP19hb_subset_context_tEUlRK9hb_pair_tIjjEE_L24hb_function_sortedness_t1ELSJ_0EESL_TnPN12hb_enable_ifIXsr17hb_is_iterator_ofIT_NSW_6item_tEEE5valueEvE4typeELSJ_0EEEvP22hb_serialize_context_tPKT0_SW_NS1_11ValueFormatEPK12hb_hashmap_tIjSO_IjiELb0EE Unexecuted instantiation: hb-ot-layout.cc:_ZN2OT6Layout9GPOS_impl16SinglePosFormat19serializeI13hb_map_iter_tI16hb_filter_iter_tI13hb_zip_iter_tINS0_6Common8Coverage6iter_tE15hb_range_iter_tIjjEERK8hb_set_tRK3$_6LPv0EEZNKS1_16SinglePosFormat26subsetEP19hb_subset_context_tEUlRK9hb_pair_tIjjEE_L24hb_function_sortedness_t1ELSJ_0EESL_TnPN12hb_enable_ifIXsr17hb_is_iterator_ofIT_NSW_6item_tEEE5valueEvE4typeELSJ_0EEEvP22hb_serialize_context_tPKT0_SW_NS1_11ValueFormatEPK12hb_hashmap_tIjSO_IjiELb0EE Unexecuted instantiation: hb-ot-shape-fallback.cc:_ZN2OT6Layout9GPOS_impl16SinglePosFormat19serializeI13hb_map_iter_tI16hb_filter_iter_tI13hb_zip_iter_tINS0_6Common8Coverage6iter_tE15hb_range_iter_tIjjEERK8hb_set_tRK3$_6LPv0EEZNKS1_16SinglePosFormat26subsetEP19hb_subset_context_tEUlRK9hb_pair_tIjjEE_L24hb_function_sortedness_t1ELSJ_0EESL_TnPN12hb_enable_ifIXsr17hb_is_iterator_ofIT_NSW_6item_tEEE5valueEvE4typeELSJ_0EEEvP22hb_serialize_context_tPKT0_SW_NS1_11ValueFormatEPK12hb_hashmap_tIjSO_IjiELb0EE
140
141		bool subset (hb_subset_context_t *c) const
142	0	{
143	0	TRACE_SUBSET (this);
144	0	const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
145	0	const hb_map_t &glyph_map = *c->plan->glyph_map;
146	0
147	0	hb_set_t intersection;
148	0	(this+coverage).intersect_set (glyphset, intersection);
149	0
150	0	unsigned new_format = valueFormat;
151	0
152	0	if (c->plan->normalized_coords)
153	0	{
154	0	new_format = valueFormat.get_effective_format (values.arrayZ, false, false, this, &c->plan->layout_variation_idx_delta_map);
155	0	}
156	0	/* do not strip hints for VF */
157	0	else if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING)
158	0	{
159	0	hb_blob_t* blob = hb_face_reference_table (c->plan->source, HB_TAG ('f','v','a','r'));
160	0	bool has_fvar = (blob != hb_blob_get_empty ());
161	0	hb_blob_destroy (blob);
162	0
163	0	bool strip = !has_fvar;
164	0	/* special case: strip hints when a VF has no GDEF varstore after
165	0	* subsetting*/
166	0	if (has_fvar && !c->plan->has_gdef_varstore)
167	0	strip = true;
168	0	new_format = valueFormat.get_effective_format (values.arrayZ,
169	0	strip, /* strip hints */
170	0	true, /* strip empty */
171	0	this, nullptr);
172	0	}
173	0
174	0	auto it =
175	0	+ hb_iter (intersection)
176	0	\| hb_map_retains_sorting (glyph_map)
177	0	\| hb_zip (hb_repeat (values.as_array (valueFormat.get_len ())))
178	0	;
179	0
180	0	bool ret = bool (it);
181	0	SinglePos_serialize (c->serializer, this, it, &c->plan->layout_variation_idx_delta_map, new_format);
182	0	return_trace (ret);
183	0	}
184		};
185
186		}
187		}
188		}
189
190		#endif /* OT_LAYOUT_GPOS_SINGLEPOSFORMAT1_HH */

Coverage Report

Created: 2026-08-14 06:53