1/*
2 * Copyright (C) 2019 Apple Inc. 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "LayoutRect.h"
29#include "RenderGeometryMap.h"
30
31namespace WTF {
32class TextStream;
33}
34
35namespace WebCore {
36
37class OverlapMapContainer;
38
39class LayerOverlapMap {
40 WTF_MAKE_NONCOPYABLE(LayerOverlapMap);
41public:
42 LayerOverlapMap();
43 ~LayerOverlapMap();
44
45 void add(const LayoutRect& bounds);
46 bool overlapsLayers(const LayoutRect&) const;
47 bool isEmpty() const { return m_isEmpty; }
48
49 void pushCompositingContainer();
50 void popCompositingContainer();
51
52 const RenderGeometryMap& geometryMap() const { return m_geometryMap; }
53 RenderGeometryMap& geometryMap() { return m_geometryMap; }
54
55 const Vector<std::unique_ptr<OverlapMapContainer>>& overlapStack() const { return m_overlapStack; }
56
57private:
58 Vector<std::unique_ptr<OverlapMapContainer>> m_overlapStack;
59 RenderGeometryMap m_geometryMap;
60 bool m_isEmpty { true };
61};
62
63TextStream& operator<<(TextStream&, const LayerOverlapMap&);
64
65} // namespace WebCore
66