1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
* Copyright © 2018 Adobe Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Adobe Author(s): Michiharu Ariza
*/
#ifndef HB_OT_VORG_TABLE_HH
#define HB_OT_VORG_TABLE_HH
#include "hb-open-type.hh"
/*
* VORG -- Vertical Origin Table
* https://docs.microsoft.com/en-us/typography/opentype/spec/vorg
*/
#define HB_OT_TAG_VORG HB_TAG('V','O','R','G')
namespace OT {
struct VertOriginMetric
{
int cmp (hb_codepoint_t g) const { return glyph.cmp (g); }
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
public:
HBGlyphID16 glyph;
FWORD vertOriginY;
public:
DEFINE_SIZE_STATIC (4);
};
struct VORG
{
static constexpr hb_tag_t tableTag = HB_OT_TAG_VORG;
bool has_data () const { return version.to_int (); }
int get_y_origin (hb_codepoint_t glyph) const
{
unsigned int i;
if (!vertYOrigins.bfind (glyph, &i))
return defaultVertOriginY;
return vertYOrigins[i].vertOriginY;
}
template <typename Iterator,
hb_requires (hb_is_iterator (Iterator))>
void serialize (hb_serialize_context_t *c,
Iterator it,
FWORD defaultVertOriginY)
{
if (unlikely (!c->extend_min ((*this)))) return;
this->version.major = 1;
this->version.minor = 0;
this->defaultVertOriginY = defaultVertOriginY;
this->vertYOrigins.len = it.len ();
c->copy_all (it);
}
bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
auto *vorg_prime = c->serializer->start_embed<VORG> ();
if (unlikely (!c->serializer->check_success (vorg_prime))) return_trace (false);
auto it =
+ vertYOrigins.as_array ()
| hb_filter (c->plan->glyphset (), &VertOriginMetric::glyph)
| hb_map ([&] (const VertOriginMetric& _)
{
hb_codepoint_t new_glyph = HB_SET_VALUE_INVALID;
c->plan->new_gid_for_old_gid (_.glyph, &new_glyph);
VertOriginMetric metric;
metric.glyph = new_glyph;
metric.vertOriginY = _.vertOriginY;
return metric;
})
;
/* serialize the new table */
vorg_prime->serialize (c->serializer, it, defaultVertOriginY);
return_trace (true);
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
hb_barrier () &&
version.major == 1 &&
vertYOrigins.sanitize (c));
}
protected:
FixedVersion<>version; /* Version of VORG table. Set to 0x00010000u. */
FWORD defaultVertOriginY;
/* The default vertical origin. */
SortedArray16Of<VertOriginMetric>
vertYOrigins; /* The array of vertical origins. */
public:
DEFINE_SIZE_ARRAY(8, vertYOrigins);
};
} /* namespace OT */
#endif /* HB_OT_VORG_TABLE_HH */
|
