/src/harfbuzz/src/hb-ot-hhea-table.hh
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1 | | /* |
2 | | * Copyright © 2011,2012 Google, Inc. |
3 | | * |
4 | | * This is part of HarfBuzz, a text shaping library. |
5 | | * |
6 | | * Permission is hereby granted, without written agreement and without |
7 | | * license or royalty fees, to use, copy, modify, and distribute this |
8 | | * software and its documentation for any purpose, provided that the |
9 | | * above copyright notice and the following two paragraphs appear in |
10 | | * all copies of this software. |
11 | | * |
12 | | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
13 | | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
14 | | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
15 | | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
16 | | * DAMAGE. |
17 | | * |
18 | | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
19 | | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
20 | | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
21 | | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
22 | | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
23 | | * |
24 | | * Google Author(s): Behdad Esfahbod |
25 | | */ |
26 | | |
27 | | #ifndef HB_OT_HHEA_TABLE_HH |
28 | | #define HB_OT_HHEA_TABLE_HH |
29 | | |
30 | | #include "hb-open-type.hh" |
31 | | |
32 | | /* |
33 | | * hhea -- Horizontal Header |
34 | | * https://docs.microsoft.com/en-us/typography/opentype/spec/hhea |
35 | | * vhea -- Vertical Header |
36 | | * https://docs.microsoft.com/en-us/typography/opentype/spec/vhea |
37 | | */ |
38 | | #define HB_OT_TAG_hhea HB_TAG('h','h','e','a') |
39 | | #define HB_OT_TAG_vhea HB_TAG('v','h','e','a') |
40 | | |
41 | | |
42 | | namespace OT { |
43 | | |
44 | | |
45 | | template <typename T> |
46 | | struct _hea |
47 | | { |
48 | 2.22M | bool has_data () const { return version.major; }OT::_hea<OT::hhea>::has_data() const Line | Count | Source | 48 | 2.22M | bool has_data () const { return version.major; } |
Unexecuted instantiation: OT::_hea<OT::vhea>::has_data() const |
49 | | |
50 | | bool sanitize (hb_sanitize_context_t *c) const |
51 | 245k | { |
52 | 245k | TRACE_SANITIZE (this); |
53 | 245k | return_trace (c->check_struct (this) && likely (version.major == 1)); |
54 | 245k | } OT::_hea<OT::hhea>::sanitize(hb_sanitize_context_t*) const Line | Count | Source | 51 | 230k | { | 52 | 230k | TRACE_SANITIZE (this); | 53 | 230k | return_trace (c->check_struct (this) && likely (version.major == 1)); | 54 | 230k | } |
OT::_hea<OT::vhea>::sanitize(hb_sanitize_context_t*) const Line | Count | Source | 51 | 14.9k | { | 52 | 14.9k | TRACE_SANITIZE (this); | 53 | 14.9k | return_trace (c->check_struct (this) && likely (version.major == 1)); | 54 | 14.9k | } |
|
55 | | |
56 | | public: |
57 | | FixedVersion<>version; /* 0x00010000u for version 1.0. */ |
58 | | FWORD ascender; /* Typographic ascent. */ |
59 | | FWORD descender; /* Typographic descent. */ |
60 | | FWORD lineGap; /* Typographic line gap. */ |
61 | | UFWORD advanceMax; /* Maximum advance width/height value in |
62 | | * metrics table. */ |
63 | | FWORD minLeadingBearing; |
64 | | /* Minimum left/top sidebearing value in |
65 | | * metrics table. */ |
66 | | FWORD minTrailingBearing; |
67 | | /* Minimum right/bottom sidebearing value; |
68 | | * calculated as Min(aw - lsb - |
69 | | * (xMax - xMin)) for horizontal. */ |
70 | | FWORD maxExtent; /* horizontal: Max(lsb + (xMax - xMin)), |
71 | | * vertical: minLeadingBearing+(yMax-yMin). */ |
72 | | HBINT16 caretSlopeRise; /* Used to calculate the slope of the |
73 | | * cursor (rise/run); 1 for vertical caret, |
74 | | * 0 for horizontal.*/ |
75 | | HBINT16 caretSlopeRun; /* 0 for vertical caret, 1 for horizontal. */ |
76 | | HBINT16 caretOffset; /* The amount by which a slanted |
77 | | * highlight on a glyph needs |
78 | | * to be shifted to produce the |
79 | | * best appearance. Set to 0 for |
80 | | * non-slanted fonts. */ |
81 | | HBINT16 reserved1; /* Set to 0. */ |
82 | | HBINT16 reserved2; /* Set to 0. */ |
83 | | HBINT16 reserved3; /* Set to 0. */ |
84 | | HBINT16 reserved4; /* Set to 0. */ |
85 | | HBINT16 metricDataFormat;/* 0 for current format. */ |
86 | | HBUINT16 numberOfLongMetrics; |
87 | | /* Number of LongMetric entries in metric |
88 | | * table. */ |
89 | | public: |
90 | | DEFINE_SIZE_STATIC (36); |
91 | | }; |
92 | | |
93 | | struct hhea : _hea<hhea> { |
94 | | static constexpr hb_tag_t tableTag = HB_OT_TAG_hhea; |
95 | | }; |
96 | | struct vhea : _hea<vhea> { |
97 | | static constexpr hb_tag_t tableTag = HB_OT_TAG_vhea; |
98 | | }; |
99 | | |
100 | | |
101 | | } /* namespace OT */ |
102 | | |
103 | | |
104 | | #endif /* HB_OT_HHEA_TABLE_HH */ |