1/* 2 * Copyright (C) 2003, 2004, 2005, 2006 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. ``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 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#include <algorithm> 30 31#if USE(CG) 32typedef struct CGSize CGSize; 33#endif 34 35#if PLATFORM(MAC) 36#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES 37typedef struct CGSize NSSize; 38#else 39typedef struct _NSSize NSSize; 40#endif 41#endif 42 43#if PLATFORM(IOS) 44#ifndef NSSize 45#define NSSize CGSize 46#endif 47#endif 48 49#if PLATFORM(WIN) 50typedef struct tagSIZE SIZE; 51#endif 52 53namespace WTF { 54class PrintStream; 55} 56 57namespace WebCore { 58 59class FloatSize; 60 61class IntSize { 62public: 63 IntSize() : m_width(0), m_height(0) { } 64 IntSize(int width, int height) : m_width(width), m_height(height) { } 65 explicit IntSize(const FloatSize&); // don't do this implicitly since it's lossy 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 contract(int width, int height) 85 { 86 m_width -= width; 87 m_height -= height; 88 } 89 90 void scale(float widthScale, float heightScale) 91 { 92 m_width = static_cast<int>(static_cast<float>(m_width) * widthScale); 93 m_height = static_cast<int>(static_cast<float>(m_height) * heightScale); 94 } 95 96 void scale(float scale) 97 { 98 this->scale(scale, scale); 99 } 100 101 IntSize expandedTo(const IntSize& other) const 102 { 103 return IntSize(std::max(m_width, other.m_width), std::max(m_height, other.m_height)); 104 } 105 106 IntSize shrunkTo(const IntSize& other) const 107 { 108 return IntSize(std::min(m_width, other.m_width), std::min(m_height, other.m_height)); 109 } 110 111 void clampNegativeToZero() 112 { 113 *this = expandedTo(IntSize()); 114 } 115 116 void clampToMinimumSize(const IntSize& minimumSize) 117 { 118 if (m_width < minimumSize.width()) 119 m_width = minimumSize.width(); 120 if (m_height < minimumSize.height()) 121 m_height = minimumSize.height(); 122 } 123 124 int area() const 125 { 126 return m_width * m_height; 127 } 128 129 int diagonalLengthSquared() const 130 { 131 return m_width * m_width + m_height * m_height; 132 } 133 134 IntSize transposedSize() const 135 { 136 return IntSize(m_height, m_width); 137 } 138 139#if USE(CG) 140 explicit IntSize(const CGSize&); // don't do this implicitly since it's lossy 141 operator CGSize() const; 142#endif 143 144#if PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) 145 explicit IntSize(const NSSize &); // don't do this implicitly since it's lossy 146 operator NSSize() const; 147#endif 148 149#if PLATFORM(WIN) 150 IntSize(const SIZE&); 151 operator SIZE() const; 152#endif 153 154 void dump(WTF::PrintStream& out) const; 155 156private: 157 int m_width, m_height; 158}; 159 160inline IntSize& operator+=(IntSize& a, const IntSize& b) 161{ 162 a.setWidth(a.width() + b.width()); 163 a.setHeight(a.height() + b.height()); 164 return a; 165} 166 167inline IntSize& operator-=(IntSize& a, const IntSize& b) 168{ 169 a.setWidth(a.width() - b.width()); 170 a.setHeight(a.height() - b.height()); 171 return a; 172} 173 174inline IntSize operator+(const IntSize& a, const IntSize& b) 175{ 176 return IntSize(a.width() + b.width(), a.height() + b.height()); 177} 178 179inline IntSize operator-(const IntSize& a, const IntSize& b) 180{ 181 return IntSize(a.width() - b.width(), a.height() - b.height()); 182} 183 184inline IntSize operator-(const IntSize& size) 185{ 186 return IntSize(-size.width(), -size.height()); 187} 188 189inline bool operator==(const IntSize& a, const IntSize& b) 190{ 191 return a.width() == b.width() && a.height() == b.height(); 192} 193 194inline bool operator!=(const IntSize& a, const IntSize& b) 195{ 196 return a.width() != b.width() || a.height() != b.height(); 197} 198 199} // namespace WebCore 200 201#endif // IntSize_h 202