1 /* 2 * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2013 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef IntSize_h 28 #define IntSize_h 29 30 #include "wtf/Platform.h" 31 32 #if OS(DARWIN) 33 typedef struct CGSize CGSize; 34 35 #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES 36 typedef struct CGSize NSSize; 37 #else 38 typedef struct _NSSize NSSize; 39 #endif 40 #endif 41 42 namespace WebCore { 43 44 class IntSize { 45 public: 46 IntSize() : m_width(0), m_height(0) { } 47 IntSize(int width, int height) : m_width(width), m_height(height) { } 48 49 int width() const { return m_width; } 50 int height() const { return m_height; } 51 52 void setWidth(int width) { m_width = width; } 53 void setHeight(int height) { m_height = height; } 54 55 bool isEmpty() const { return m_width <= 0 || m_height <= 0; } 56 bool isZero() const { return !m_width && !m_height; } 57 58 float aspectRatio() const { return static_cast<float>(m_width) / static_cast<float>(m_height); } 59 60 void expand(int width, int height) 61 { 62 m_width += width; 63 m_height += height; 64 } 65 66 void scale(float widthScale, float heightScale) 67 { 68 m_width = static_cast<int>(static_cast<float>(m_width) * widthScale); 69 m_height = static_cast<int>(static_cast<float>(m_height) * heightScale); 70 } 71 72 void scale(float scale) 73 { 74 this->scale(scale, scale); 75 } 76 77 IntSize expandedTo(const IntSize& other) const 78 { 79 return IntSize(m_width > other.m_width ? m_width : other.m_width, 80 m_height > other.m_height ? m_height : other.m_height); 81 } 82 83 IntSize shrunkTo(const IntSize& other) const 84 { 85 return IntSize(m_width < other.m_width ? m_width : other.m_width, 86 m_height < other.m_height ? m_height : other.m_height); 87 } 88 89 void clampNegativeToZero() 90 { 91 *this = expandedTo(IntSize()); 92 } 93 94 void clampToMinimumSize(const IntSize& minimumSize) 95 { 96 if (m_width < minimumSize.width()) 97 m_width = minimumSize.width(); 98 if (m_height < minimumSize.height()) 99 m_height = minimumSize.height(); 100 } 101 102 int area() const 103 { 104 return m_width * m_height; 105 } 106 107 int diagonalLengthSquared() const 108 { 109 return m_width * m_width + m_height * m_height; 110 } 111 112 IntSize transposedSize() const 113 { 114 return IntSize(m_height, m_width); 115 } 116 117 #if OS(DARWIN) 118 explicit IntSize(const CGSize&); // don't do this implicitly since it's lossy 119 operator CGSize() const; 120 121 #if !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) 122 explicit IntSize(const NSSize &); // don't do this implicitly since it's lossy 123 operator NSSize() const; 124 #endif 125 #endif 126 127 private: 128 int m_width, m_height; 129 }; 130 131 inline IntSize& operator+=(IntSize& a, const IntSize& b) 132 { 133 a.setWidth(a.width() + b.width()); 134 a.setHeight(a.height() + b.height()); 135 return a; 136 } 137 138 inline IntSize& operator-=(IntSize& a, const IntSize& b) 139 { 140 a.setWidth(a.width() - b.width()); 141 a.setHeight(a.height() - b.height()); 142 return a; 143 } 144 145 inline IntSize operator+(const IntSize& a, const IntSize& b) 146 { 147 return IntSize(a.width() + b.width(), a.height() + b.height()); 148 } 149 150 inline IntSize operator-(const IntSize& a, const IntSize& b) 151 { 152 return IntSize(a.width() - b.width(), a.height() - b.height()); 153 } 154 155 inline IntSize operator-(const IntSize& size) 156 { 157 return IntSize(-size.width(), -size.height()); 158 } 159 160 inline bool operator==(const IntSize& a, const IntSize& b) 161 { 162 return a.width() == b.width() && a.height() == b.height(); 163 } 164 165 inline bool operator!=(const IntSize& a, const IntSize& b) 166 { 167 return a.width() != b.width() || a.height() != b.height(); 168 } 169 170 } // namespace WebCore 171 172 #endif // IntSize_h 173
