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#if ENABLE(CSS_FILTERS)
34
35#include "LayoutRect.h"
36
37namespace WebCore {
38
39class IntRectExtent {
40public:
41    IntRectExtent()
42        : m_top(0)
43        , m_right(0)
44        , m_bottom(0)
45        , m_left(0)
46    {
47    }
48
49    IntRectExtent(int top, int right, int bottom, int left)
50        : m_top(top)
51        , m_right(right)
52        , m_bottom(bottom)
53        , m_left(left)
54    {
55    }
56
57    int top() const { return m_top; }
58    void setTop(int top) { m_top = top; }
59
60    int right() const { return m_right; }
61    void setRight(int right) { m_right = right; }
62
63    int bottom() const { return m_bottom; }
64    void setBottom(int bottom) { m_bottom = bottom; }
65
66    int left() const { return m_left; }
67    void setLeft(int left) { m_left = left; }
68
69    void expandRect(LayoutRect& rect) const
70    {
71        if (isZero())
72            return;
73
74        rect.move(-left(), -top());
75        rect.expand(left() + right(), top() + bottom());
76    }
77
78private:
79    bool isZero() const { return !left() && !right() && !top() && !bottom(); }
80
81    int m_top;
82    int m_right;
83    int m_bottom;
84    int m_left;
85};
86
87inline bool operator==(const IntRectExtent& a, const IntRectExtent& b)
88{
89    return a.top() == b.top()
90        && a.right() == b.right()
91        && a.bottom() == b.bottom()
92        && a.left() == b.left();
93}
94
95inline bool operator!=(const IntRectExtent& a, const IntRectExtent& b)
96{
97    return !(a == b);
98}
99
100inline void operator+=(IntRectExtent& a, const IntRectExtent& b)
101{
102    a.setTop(a.top() + b.top());
103    a.setRight(a.right() + b.right());
104    a.setBottom(a.bottom() + b.bottom());
105    a.setLeft(a.left() + b.left());
106}
107
108} // namespace WebCore
109
110#endif // ENABLE(CSS_FILTERS)
111
112#endif // IntRectExtent_h
113