1/*
2 * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef IntSize_h
27#define IntSize_h
28
29#if USE(CG) || USE(SKIA_ON_MAC_CHROME)
30typedef struct CGSize CGSize;
31#endif
32
33#if PLATFORM(MAC)
34#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
35typedef struct CGSize NSSize;
36#else
37typedef struct _NSSize NSSize;
38#endif
39#endif
40
41#if PLATFORM(WIN)
42typedef struct tagSIZE SIZE;
43#elif PLATFORM(QT)
44#include <qglobal.h>
45QT_BEGIN_NAMESPACE
46class QSize;
47QT_END_NAMESPACE
48#elif PLATFORM(HAIKU)
49class BSize;
50#endif
51
52#if PLATFORM(WX)
53class wxSize;
54#endif
55
56#if PLATFORM(BREWMP)
57typedef struct AEESize AEESize;
58#endif
59
60namespace WebCore {
61
62class IntSize {
63public:
64    IntSize() : m_width(0), m_height(0) { }
65    IntSize(int width, int height) : m_width(width), m_height(height) { }
66
67    int width() const { return m_width; }
68    int height() const { return m_height; }
69
70    void setWidth(int width) { m_width = width; }
71    void setHeight(int height) { m_height = height; }
72
73    bool isEmpty() const { return m_width <= 0 || m_height <= 0; }
74    bool isZero() const { return !m_width && !m_height; }
75
76    float aspectRatio() const { return static_cast<float>(m_width) / static_cast<float>(m_height); }
77
78    void expand(int width, int height)
79    {
80        m_width += width;
81        m_height += height;
82    }
83
84    void scale(float scale)
85    {
86        m_width = static_cast<int>(static_cast<float>(m_width) * scale);
87        m_height = static_cast<int>(static_cast<float>(m_height) * scale);
88    }
89
90    IntSize expandedTo(const IntSize& other) const
91    {
92        return IntSize(m_width > other.m_width ? m_width : other.m_width,
93            m_height > other.m_height ? m_height : other.m_height);
94    }
95
96    IntSize shrunkTo(const IntSize& other) const
97    {
98        return IntSize(m_width < other.m_width ? m_width : other.m_width,
99            m_height < other.m_height ? m_height : other.m_height);
100    }
101
102    void clampNegativeToZero()
103    {
104        *this = expandedTo(IntSize());
105    }
106
107    IntSize transposedSize() const
108    {
109        return IntSize(m_height, m_width);
110    }
111
112#if USE(CG) || USE(SKIA_ON_MAC_CHROME)
113    explicit IntSize(const CGSize&); // don't do this implicitly since it's lossy
114    operator CGSize() const;
115#endif
116
117#if PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
118    explicit IntSize(const NSSize &); // don't do this implicitly since it's lossy
119    operator NSSize() const;
120#endif
121
122#if PLATFORM(WIN)
123    IntSize(const SIZE&);
124    operator SIZE() const;
125#endif
126
127#if PLATFORM(QT)
128    IntSize(const QSize&);
129    operator QSize() const;
130#endif
131
132#if PLATFORM(HAIKU)
133    explicit IntSize(const BSize&);
134    operator BSize() const;
135#endif
136
137#if PLATFORM(WX)
138    IntSize(const wxSize&);
139    operator wxSize() const;
140#endif
141
142#if PLATFORM(BREWMP)
143    IntSize(const AEESize&);
144    operator AEESize() const;
145#endif
146
147private:
148    int m_width, m_height;
149};
150
151inline IntSize& operator+=(IntSize& a, const IntSize& b)
152{
153    a.setWidth(a.width() + b.width());
154    a.setHeight(a.height() + b.height());
155    return a;
156}
157
158inline IntSize& operator-=(IntSize& a, const IntSize& b)
159{
160    a.setWidth(a.width() - b.width());
161    a.setHeight(a.height() - b.height());
162    return a;
163}
164
165inline IntSize operator+(const IntSize& a, const IntSize& b)
166{
167    return IntSize(a.width() + b.width(), a.height() + b.height());
168}
169
170inline IntSize operator-(const IntSize& a, const IntSize& b)
171{
172    return IntSize(a.width() - b.width(), a.height() - b.height());
173}
174
175inline IntSize operator-(const IntSize& size)
176{
177    return IntSize(-size.width(), -size.height());
178}
179
180inline bool operator==(const IntSize& a, const IntSize& b)
181{
182    return a.width() == b.width() && a.height() == b.height();
183}
184
185inline bool operator!=(const IntSize& a, const IntSize& b)
186{
187    return a.width() != b.width() || a.height() != b.height();
188}
189
190} // namespace WebCore
191
192#endif // IntSize_h
193