/src/harfbuzz/src/hb-ot-gasp-table.hh
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1 | | /* |
2 | | * Copyright © 2018 Ebrahim Byagowi |
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 | | |
25 | | #ifndef HB_OT_GASP_TABLE_HH |
26 | | #define HB_OT_GASP_TABLE_HH |
27 | | |
28 | | #include "hb-open-type.hh" |
29 | | #include "hb-ot-hhea-table.hh" |
30 | | #include "hb-ot-os2-table.hh" |
31 | | #include "hb-ot-var-hvar-table.hh" |
32 | | |
33 | | /* |
34 | | * gasp -- Grid-fitting and Scan-conversion Procedure |
35 | | * https://docs.microsoft.com/en-us/typography/opentype/spec/gasp |
36 | | */ |
37 | | #define HB_OT_TAG_gasp HB_TAG('g','a','s','p') |
38 | | |
39 | | |
40 | | namespace OT { |
41 | | |
42 | | struct GaspRange |
43 | | { |
44 | | bool sanitize (hb_sanitize_context_t *c) const |
45 | 0 | { |
46 | 0 | TRACE_SANITIZE (this); |
47 | 0 | return_trace (c->check_struct (this)); |
48 | 0 | } |
49 | | |
50 | | public: |
51 | | HBUINT16 rangeMaxPPEM; /* Upper limit of range, in PPEM */ |
52 | | HBUINT16 rangeGaspBehavior; |
53 | | /* Flags describing desired rasterizer behavior. */ |
54 | | public: |
55 | | DEFINE_SIZE_STATIC (4); |
56 | | }; |
57 | | |
58 | | struct gasp |
59 | | { |
60 | | static constexpr hb_tag_t tableTag = HB_OT_TAG_gasp; |
61 | | |
62 | | const GaspRange &get_gasp_range (unsigned int i) const |
63 | 0 | { return gaspRanges[i]; } |
64 | | |
65 | | bool sanitize (hb_sanitize_context_t *c) const |
66 | 0 | { |
67 | 0 | TRACE_SANITIZE (this); |
68 | 0 | return_trace (c->check_struct (this) && |
69 | 0 | gaspRanges.sanitize (c)); |
70 | 0 | } |
71 | | |
72 | | protected: |
73 | | HBUINT16 version; /* Version number (set to 1) */ |
74 | | Array16Of<GaspRange> |
75 | | gaspRanges; /* Number of records to follow |
76 | | * Sorted by ppem */ |
77 | | public: |
78 | | DEFINE_SIZE_ARRAY (4, gaspRanges); |
79 | | }; |
80 | | |
81 | | } /* namespace OT */ |
82 | | |
83 | | |
84 | | #endif /* HB_OT_GASP_TABLE_HH */ |