1/*
2 * Copyright (C) 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#ifndef IntRectExtent_h
31#define IntRectExtent_h
32
33#include "LayoutRect.h"
34
35namespace WebCore {
36
37class IntRectExtent {
38public:
39 IntRectExtent()
40 : m_top(0)
41 , m_right(0)
42 , m_bottom(0)
43 , m_left(0)
44 {
45 }
46
47 IntRectExtent(int top, int right, int bottom, int left)
48 : m_top(top)
49 , m_right(right)
50 , m_bottom(bottom)
51 , m_left(left)
52 {
53 }
54
55 int top() const { return m_top; }
56 void setTop(int top) { m_top = top; }
57
58 int right() const { return m_right; }
59 void setRight(int right) { m_right = right; }
60
61 int bottom() const { return m_bottom; }
62 void setBottom(int bottom) { m_bottom = bottom; }
63
64 int left() const { return m_left; }
65 void setLeft(int left) { m_left = left; }
66
67 void expandRect(LayoutRect& rect) const
68 {
69 if (isZero())
70 return;
71
72 rect.move(-left(), -top());
73 rect.expand(left() + right(), top() + bottom());
74 }
75
76private:
77 bool isZero() const { return !left() && !right() && !top() && !bottom(); }
78
79 int m_top;
80 int m_right;
81 int m_bottom;
82 int m_left;
83};
84
85inline bool operator==(const IntRectExtent& a, const IntRectExtent& b)
86{
87 return a.top() == b.top()
88 && a.right() == b.right()
89 && a.bottom() == b.bottom()
90 && a.left() == b.left();
91}
92
93inline bool operator!=(const IntRectExtent& a, const IntRectExtent& b)
94{
95 return !(a == b);
96}
97
98inline void operator+=(IntRectExtent& a, const IntRectExtent& b)
99{
100 a.setTop(a.top() + b.top());
101 a.setRight(a.right() + b.right());
102 a.setBottom(a.bottom() + b.bottom());
103 a.setLeft(a.left() + b.left());
104}
105
106} // namespace WebCore
107
108#endif // IntRectExtent_h
109