2 * Copyright (C) 2003, 2006 Apple Computer, Inc. All rights reserved.
3 * Copyright (C) 2005 Nokia. All rights reserved.
4 * 2008 Eric Seidel <eric@webkit.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <wtf/MathExtras.h>
34 #if USE(CG) || (PLATFORM(WX) && OS(DARWIN)) || USE(SKIA_ON_MAC_CHROMIUM)
35 typedef struct CGSize CGSize;
38 #if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN)) || (PLATFORM(QT) && USE(QTKIT))
39 #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
40 typedef struct CGSize NSSize;
42 typedef struct _NSSize NSSize;
52 FloatSize() : m_width(0), m_height(0) { }
53 FloatSize(float width, float height) : m_width(width), m_height(height) { }
54 FloatSize(const IntSize&);
56 static FloatSize narrowPrecision(double width, double height);
58 float width() const { return m_width; }
59 float height() const { return m_height; }
61 void setWidth(float width) { m_width = width; }
62 void setHeight(float height) { m_height = height; }
64 bool isEmpty() const { return m_width <= 0 || m_height <= 0; }
66 bool isExpressibleAsIntSize() const;
68 float aspectRatio() const { return m_width / m_height; }
70 void expand(float width, float height)
76 void scale(float s) { scale(s, s); }
78 void scale(float scaleX, float scaleY)
84 FloatSize expandedTo(const FloatSize& other) const
86 return FloatSize(m_width > other.m_width ? m_width : other.m_width,
87 m_height > other.m_height ? m_height : other.m_height);
90 FloatSize shrunkTo(const FloatSize& other) const
92 return FloatSize(m_width < other.m_width ? m_width : other.m_width,
93 m_height < other.m_height ? m_height : other.m_height);
96 float diagonalLength() const;
97 float diagonalLengthSquared() const
99 return m_width * m_width + m_height * m_height;
102 FloatSize transposedSize() const
104 return FloatSize(m_height, m_width);
107 #if USE(CG) || (PLATFORM(WX) && OS(DARWIN)) || USE(SKIA_ON_MAC_CHROMIUM)
108 explicit FloatSize(const CGSize&); // don't do this implicitly since it's lossy
109 operator CGSize() const;
112 #if (PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)) \
113 || (PLATFORM(CHROMIUM) && OS(DARWIN)) || (PLATFORM(QT) && USE(QTKIT))
114 explicit FloatSize(const NSSize &); // don't do this implicitly since it's lossy
115 operator NSSize() const;
119 float m_width, m_height;
122 inline FloatSize& operator+=(FloatSize& a, const FloatSize& b)
124 a.setWidth(a.width() + b.width());
125 a.setHeight(a.height() + b.height());
129 inline FloatSize& operator-=(FloatSize& a, const FloatSize& b)
131 a.setWidth(a.width() - b.width());
132 a.setHeight(a.height() - b.height());
136 inline FloatSize operator+(const FloatSize& a, const FloatSize& b)
138 return FloatSize(a.width() + b.width(), a.height() + b.height());
141 inline FloatSize operator-(const FloatSize& a, const FloatSize& b)
143 return FloatSize(a.width() - b.width(), a.height() - b.height());
146 inline FloatSize operator-(const FloatSize& size)
148 return FloatSize(-size.width(), -size.height());
151 inline bool operator==(const FloatSize& a, const FloatSize& b)
153 return a.width() == b.width() && a.height() == b.height();
156 inline bool operator!=(const FloatSize& a, const FloatSize& b)
158 return a.width() != b.width() || a.height() != b.height();
161 inline IntSize roundedIntSize(const FloatSize& p)
163 return IntSize(static_cast<int>(roundf(p.width())), static_cast<int>(roundf(p.height())));
166 inline IntSize expandedIntSize(const FloatSize& p)
168 return IntSize(clampToInteger(ceilf(p.width())), clampToInteger(ceilf(p.height())));
171 inline IntPoint flooredIntPoint(const FloatSize& p)
173 return IntPoint(static_cast<int>(p.width()), static_cast<int>(p.height()));
176 } // namespace WebCore
178 #endif // FloatSize_h