1/*
2 * Copyright (C) 2012, 2013 Adobe Systems Incorporated. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#pragma once
31
32#include "BasicShapes.h"
33#include "Path.h"
34#include "RenderStyleConstants.h"
35#include <wtf/RefCounted.h>
36#include <wtf/TypeCasts.h>
37#include <wtf/text/WTFString.h>
38
39namespace WebCore {
40
41class ClipPathOperation : public RefCounted<ClipPathOperation> {
42public:
43 enum OperationType {
44 Reference,
45 Shape,
46 Box
47 };
48
49 virtual ~ClipPathOperation() = default;
50
51 virtual bool operator==(const ClipPathOperation&) const = 0;
52 bool operator!=(const ClipPathOperation& o) const { return !(*this == o); }
53
54 OperationType type() const { return m_type; }
55 bool isSameType(const ClipPathOperation& o) const { return o.type() == m_type; }
56
57protected:
58 explicit ClipPathOperation(OperationType type)
59 : m_type(type)
60 {
61 }
62
63 OperationType m_type;
64};
65
66class ReferenceClipPathOperation final : public ClipPathOperation {
67public:
68 static Ref<ReferenceClipPathOperation> create(const String& url, const String& fragment)
69 {
70 return adoptRef(*new ReferenceClipPathOperation(url, fragment));
71 }
72
73 const String& url() const { return m_url; }
74 const String& fragment() const { return m_fragment; }
75
76private:
77 bool operator==(const ClipPathOperation& other) const override
78 {
79 if (!isSameType(other))
80 return false;
81 auto& referenceClip = downcast<ReferenceClipPathOperation>(other);
82 return m_url == referenceClip.m_url;
83 }
84
85 ReferenceClipPathOperation(const String& url, const String& fragment)
86 : ClipPathOperation(Reference)
87 , m_url(url)
88 , m_fragment(fragment)
89 {
90 }
91
92 String m_url;
93 String m_fragment;
94};
95
96class ShapeClipPathOperation final : public ClipPathOperation {
97public:
98 static Ref<ShapeClipPathOperation> create(Ref<BasicShape>&& shape)
99 {
100 return adoptRef(*new ShapeClipPathOperation(WTFMove(shape)));
101 }
102
103 const BasicShape& basicShape() const { return m_shape; }
104 WindRule windRule() const { return m_shape.get().windRule(); }
105 const Path& pathForReferenceRect(const FloatRect& boundingRect) { return m_shape.get().path(boundingRect); }
106
107 void setReferenceBox(CSSBoxType referenceBox) { m_referenceBox = referenceBox; }
108 CSSBoxType referenceBox() const { return m_referenceBox; }
109
110private:
111 bool operator==(const ClipPathOperation& other) const override
112 {
113 if (!isSameType(other))
114 return false;
115 auto& shapeClip = downcast<ShapeClipPathOperation>(other);
116 return m_referenceBox == shapeClip.referenceBox()
117 && (m_shape.ptr() == shapeClip.m_shape.ptr() || m_shape.get() == shapeClip.m_shape.get());
118 }
119
120 explicit ShapeClipPathOperation(Ref<BasicShape>&& shape)
121 : ClipPathOperation(Shape)
122 , m_shape(WTFMove(shape))
123 , m_referenceBox(CSSBoxType::BoxMissing)
124 {
125 }
126
127 Ref<BasicShape> m_shape;
128 CSSBoxType m_referenceBox;
129};
130
131class BoxClipPathOperation final : public ClipPathOperation {
132public:
133 static Ref<BoxClipPathOperation> create(CSSBoxType referenceBox)
134 {
135 return adoptRef(*new BoxClipPathOperation(referenceBox));
136 }
137
138 const Path pathForReferenceRect(const FloatRoundedRect& boundingRect) const
139 {
140 Path path;
141 path.addRoundedRect(boundingRect);
142 return path;
143 }
144 CSSBoxType referenceBox() const { return m_referenceBox; }
145
146private:
147 bool operator==(const ClipPathOperation& other) const override
148 {
149 if (!isSameType(other))
150 return false;
151 auto& boxClip = downcast<BoxClipPathOperation>(other);
152 return m_referenceBox == boxClip.m_referenceBox;
153 }
154
155 explicit BoxClipPathOperation(CSSBoxType referenceBox)
156 : ClipPathOperation(Box)
157 , m_referenceBox(referenceBox)
158 {
159 }
160
161 CSSBoxType m_referenceBox;
162};
163
164} // namespace WebCore
165
166#define SPECIALIZE_TYPE_TRAITS_CLIP_PATH_OPERATION(ToValueTypeName, predicate) \
167SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
168 static bool isType(const WebCore::ClipPathOperation& operation) { return operation.type() == WebCore::predicate; } \
169SPECIALIZE_TYPE_TRAITS_END()
170
171SPECIALIZE_TYPE_TRAITS_CLIP_PATH_OPERATION(ReferenceClipPathOperation, ClipPathOperation::Reference)
172SPECIALIZE_TYPE_TRAITS_CLIP_PATH_OPERATION(ShapeClipPathOperation, ClipPathOperation::Shape)
173SPECIALIZE_TYPE_TRAITS_CLIP_PATH_OPERATION(BoxClipPathOperation, ClipPathOperation::Box)
174