1 | /* |
2 | * Copyright (C) 2016-2019 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 "DOMRectInit.h" |
29 | #include "ScriptWrappable.h" |
30 | #include <wtf/IsoMalloc.h> |
31 | #include <wtf/MathExtras.h> |
32 | #include <wtf/Ref.h> |
33 | #include <wtf/RefCounted.h> |
34 | |
35 | namespace WebCore { |
36 | |
37 | class DOMRectReadOnly : public ScriptWrappable, public RefCounted<DOMRectReadOnly> { |
38 | WTF_MAKE_ISO_ALLOCATED_EXPORT(DOMRectReadOnly, WEBCORE_EXPORT); |
39 | public: |
40 | static Ref<DOMRectReadOnly> create(double x, double y, double width, double height) { return adoptRef(*new DOMRectReadOnly(x, y, width, height)); } |
41 | static Ref<DOMRectReadOnly> fromRect(const DOMRectInit& init) { return create(init.x, init.y, init.width, init.height); } |
42 | |
43 | double x() const { return m_x; } |
44 | double y() const { return m_y; } |
45 | double width() const { return m_width; } |
46 | double height() const { return m_height; } |
47 | |
48 | // Model NaN handling after Math.min, Math.max. |
49 | double top() const { return WTF::nanPropagatingMin(m_y, m_y + m_height); } |
50 | double right() const { return WTF::nanPropagatingMax(m_x, m_x + m_width); } |
51 | double bottom() const { return WTF::nanPropagatingMax(m_y, m_y + m_height); } |
52 | double left() const { return WTF::nanPropagatingMin(m_x, m_x + m_width); } |
53 | |
54 | protected: |
55 | DOMRectReadOnly(double x, double y, double width, double height) |
56 | : m_x(x) |
57 | , m_y(y) |
58 | , m_width(width) |
59 | , m_height(height) |
60 | { |
61 | } |
62 | |
63 | DOMRectReadOnly() = default; |
64 | |
65 | // Any of these can be NaN or Inf. |
66 | double m_x { 0 }; |
67 | double m_y { 0 }; |
68 | double m_width { 0 }; // Can be negative. |
69 | double m_height { 0 }; // Can be negative. |
70 | }; |
71 | |
72 | } |
73 | |