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
|
/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* 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. AND ITS CONTRIBUTORS ``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 ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 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 "DisplayGeometryTypes.h"
#include "DisplayStyle.h"
#include "FloatRect.h"
#include <wtf/IsoMalloc.h>
#include <wtf/OptionSet.h>
namespace WebCore {
namespace Display {
class ContainerBox;
class Tree;
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Box);
class Box {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(Box);
public:
enum class TypeFlags : uint8_t {
BoxModelBox = 1 << 0,
ContainerBox = 1 << 1,
ImageBox = 1 << 2,
TextBox = 1 << 3,
LineBreakBox = 1 << 4, // FIXME: Workaround for webkit.org/b/219335
};
enum class StyleFlags : uint8_t {
HasTransform = 1 << 0,
};
Box(Tree&, UnadjustedAbsoluteFloatRect, Style&&, OptionSet<TypeFlags> = { });
virtual ~Box();
const Style& style() const { return m_style; }
UnadjustedAbsoluteFloatRect absoluteBoxRect() const { return m_absoluteBoxRect; }
virtual UnadjustedAbsoluteFloatRect absolutePaintingExtent() const { return m_absoluteBoxRect; }
bool isBoxModelBox() const { return m_typeFlags.contains(TypeFlags::BoxModelBox); }
bool isContainerBox() const { return m_typeFlags.contains(TypeFlags::ContainerBox); }
bool isImageBox() const { return m_typeFlags.contains(TypeFlags::ImageBox); }
bool isReplacedBox() const { return m_typeFlags.contains(TypeFlags::ImageBox); /* and other types later. */ }
bool isTextBox() const { return m_typeFlags.contains(TypeFlags::TextBox); }
bool isLineBreakBox() const { return m_typeFlags.contains(TypeFlags::LineBreakBox); }
bool participatesInZOrderSorting() const;
ContainerBox* parent() const { return m_parent; }
void setParent(ContainerBox* parent) { m_parent = parent; }
const Box* nextSibling() const { return m_nextSibling.get(); }
void setNextSibling(std::unique_ptr<Box>&&);
// FIXME: we need to check this name is correct in light of https://bugs.webkit.org/show_bug.cgi?id=250901.
void setHasTransform(bool value) { m_styleFlags.set(StyleFlags::HasTransform, value); }
bool hasTransform() const { return m_styleFlags.contains(StyleFlags::HasTransform); }
void setNeedsDisplay(std::optional<UnadjustedAbsoluteFloatRect> subrect = std::nullopt);
virtual String debugDescription() const;
private:
virtual const char* boxName() const;
const Tree& m_tree;
UnadjustedAbsoluteFloatRect m_absoluteBoxRect;
Style m_style;
ContainerBox* m_parent { nullptr };
std::unique_ptr<Box> m_nextSibling;
const OptionSet<TypeFlags> m_typeFlags;
OptionSet<StyleFlags> m_styleFlags;
};
} // namespace Display
} // namespace WebCore
#define SPECIALIZE_TYPE_TRAITS_DISPLAY_BOX(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::Display::ToValueTypeName) \
static bool isType(const WebCore::Display::Box& box) { return box.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
|
