1 | /* |
2 | * Copyright (C) 2018 Igalia S.L. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are |
6 | * met: |
7 | * |
8 | * * Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * * Redistributions in binary form must reproduce the above |
11 | * copyright notice, this list of conditions and the following disclaimer |
12 | * in the documentation and/or other materials provided with the |
13 | * distribution. |
14 | * * Neither the name of Google Inc. nor the names of its |
15 | * contributors may be used to endorse or promote products derived from |
16 | * this software without specific prior written permission. |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
21 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
22 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
23 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
24 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | */ |
30 | |
31 | #pragma once |
32 | |
33 | #include "Length.h" |
34 | |
35 | namespace WTF { |
36 | class TextStream; |
37 | } |
38 | |
39 | namespace WebCore { |
40 | |
41 | // This class wraps the lenght of a gap used by properties column-gap and row-gap. |
42 | // The valid values are "normal" or a non-negative <length-percentage>. |
43 | class GapLength { |
44 | public: |
45 | GapLength() |
46 | : m_isNormal(true) |
47 | { |
48 | } |
49 | |
50 | GapLength(const Length& length) |
51 | : m_isNormal(false) |
52 | , m_length(length) |
53 | { |
54 | } |
55 | |
56 | bool isNormal() const { return m_isNormal; } |
57 | const Length& length() const { ASSERT(!m_isNormal); return m_length; } |
58 | |
59 | bool operator==(const GapLength& o) const |
60 | { |
61 | return m_isNormal == o.m_isNormal && m_length == o.m_length; |
62 | } |
63 | |
64 | private: |
65 | bool m_isNormal; |
66 | Length m_length; |
67 | }; |
68 | |
69 | WTF::TextStream& operator<<(WTF::TextStream&, const GapLength&); |
70 | |
71 | } // namespace WebCore |
72 | |