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
|
/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <WebCore/StyleValueTypes.h>
namespace WebCore {
namespace Style {
// <'grid-auto-flow'> = [ row | column ] || dense
// https://drafts.csswg.org/css-grid-1/#grid-auto-flow-property
struct GridAutoFlow {
enum class Direction : bool { Row, Column };
enum class Packing : bool { Dense, Sparse };
constexpr GridAutoFlow(CSS::Keyword::Row) { }
constexpr GridAutoFlow(CSS::Keyword::Row, CSS::Keyword::Dense): m_packing { static_cast<uint8_t>(Packing::Dense) } { }
constexpr GridAutoFlow(CSS::Keyword::Column) : m_direction { static_cast<uint8_t>(Direction::Column) } { }
constexpr GridAutoFlow(CSS::Keyword::Column, CSS::Keyword::Dense) : m_direction { static_cast<uint8_t>(Direction::Column) }, m_packing { static_cast<uint8_t>(Packing::Dense) } { }
constexpr GridAutoFlow(CSS::Keyword::Dense) : m_packing { static_cast<uint8_t>(Packing::Dense) } { }
constexpr Direction direction() const { return static_cast<Direction>(m_direction); }
constexpr Packing packing() const { return static_cast<Packing>(m_packing); }
constexpr bool isRow() const { return direction() == Direction::Row; }
constexpr bool isColumn() const { return direction() == Direction::Column; }
constexpr bool isDense() const { return packing() == Packing::Dense; }
constexpr bool isSparse() const { return packing() == Packing::Sparse; }
template<typename... F> decltype(auto) switchOn(F&&...) const;
constexpr bool operator==(const GridAutoFlow&) const = default;
private:
PREFERRED_TYPE(Direction) uint8_t m_direction : 1 { static_cast<uint8_t>(Direction::Row) };
PREFERRED_TYPE(Packing) uint8_t m_packing : 1 { static_cast<uint8_t>(Packing::Sparse) };
};
template<typename... F> decltype(auto) GridAutoFlow::switchOn(F&&... f) const
{
auto visitor = WTF::makeVisitor(std::forward<F>(f)...);
switch (direction()) {
case Direction::Column:
switch (packing()) {
case Packing::Dense:
return visitor(SpaceSeparatedTuple { CSS::Keyword::Column { }, CSS::Keyword::Dense { } });
case Packing::Sparse:
return visitor(CSS::Keyword::Column { });
}
case Direction::Row:
switch (packing()) {
case Packing::Dense:
return visitor(CSS::Keyword::Dense { });
case Packing::Sparse:
return visitor(CSS::Keyword::Row { });
}
}
}
// MARK: - Conversion
template<> struct CSSValueConversion<GridAutoFlow> { auto operator()(BuilderState&, const CSSValue&) -> GridAutoFlow; };
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::GridAutoFlow)
|
