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
|
/*
* 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 "StylePrimitiveNumeric.h"
#include "StyleValueTypes.h"
#include <wtf/Markable.h>
namespace WebCore {
namespace Style {
// <clip-edge> = <length> | auto
struct ClipEdge : ValueOrKeyword<Length<>, CSS::Keyword::Auto> {
using Base::Base;
using Length = typename Base::Value;
bool isAuto() const { return isKeyword(); }
bool isLength() const { return isValue(); }
std::optional<Length> tryLength() const { return tryValue(); }
};
// <rect()> = rect( <clip-edge> , <clip-edge> , <clip-edge> , <clip-edge> )
struct ClipRect {
FunctionNotation<CSSValueRect, CommaSeparatedRectEdges<ClipEdge>> value;
ClipRect(CSS::Keyword::Auto keyword)
: value { CommaSeparatedRectEdges<ClipEdge> { keyword } }
{
}
template<typename T> ClipRect(T top, T right, T bottom, T left)
: value { CommaSeparatedRectEdges<ClipEdge> { WTFMove(top), WTFMove(right), WTFMove(bottom), WTFMove(left) } }
{
}
bool isAllAuto() const { return value->allOf([](auto& side) { return side.isAuto(); }); }
bool isAnyAuto() const { return value->anyOf([](auto& side) { return side.isAuto(); }); }
bool operator==(const ClipRect&) const = default;
};
DEFINE_TYPE_WRAPPER_GET(ClipRect, value);
// <'clip'> = <rect()> | auto
// https://drafts.fxtf.org/css-masking/#propdef-clip
struct Clip {
Clip(CSS::Keyword::Auto)
: value { }
{
}
Clip(const ClipRect& rect)
: value { rect }
{
}
Clip(ClipRect&& rect)
: value { WTFMove(rect) }
{
}
bool isAuto() const { return !value; }
bool isRect() const { return !isAuto(); }
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
auto visitor = WTF::makeVisitor(std::forward<F>(f)...);
if (isAuto() || value->isAllAuto())
return visitor(CSS::Keyword::Auto { });
return visitor(*value);
}
bool operator==(const Clip&) const = default;
private:
friend struct Blending<Clip>;
std::optional<ClipRect> value;
};
// MARK: Conversion
template<> struct CSSValueConversion<Clip> { auto operator()(BuilderState&, const CSSValue&) -> Clip; };
// `ClipRect` is special-cased to return a `CSSValueRect`.
template<> struct CSSValueCreation<ClipRect> { Ref<CSSValue> operator()(CSSValuePool&, const RenderStyle&, const ClipRect&); };
// MARK: - Blending
template<> struct Blending<Clip> {
auto canBlend(const Clip&, const Clip&) -> bool;
auto requiresInterpolationForAccumulativeIteration(const Clip&, const Clip&) -> bool;
auto blend(const Clip&, const Clip&, const BlendingContext&) -> Clip;
};
} // namespace Style
} // namespace WebCore
DEFINE_TUPLE_LIKE_CONFORMANCE_FOR_TYPE_WRAPPER(WebCore::Style::ClipRect);
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::ClipEdge);
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::Clip);
|
