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 "platform/PlatformExport.h" 31#include "public/platform/WebCommon.h" 32 33#if OS(MACOSX) 34typedef struct CGSize CGSize; 35 36#ifdef __OBJC__ 37#import <Foundation/Foundation.h> 38#endif 39#endif 40 41namespace blink { 42 43class PLATFORM_EXPORT IntSize { 44public: 45 IntSize() : m_width(0), m_height(0) { } 46 IntSize(int width, int height) : m_width(width), m_height(height) { } 47 48 int width() const { return m_width; } 49 int height() const { return m_height; } 50 51 void setWidth(int width) { m_width = width; } 52 void setHeight(int height) { m_height = height; } 53 54 bool isEmpty() const { return m_width <= 0 || m_height <= 0; } 55 bool isZero() const { return !m_width && !m_height; } 56 57 float aspectRatio() const { return static_cast<float>(m_width) / static_cast<float>(m_height); } 58 59 void expand(int width, int height) 60 { 61 m_width += width; 62 m_height += height; 63 } 64 65 void scale(float widthScale, float heightScale) 66 { 67 m_width = static_cast<int>(static_cast<float>(m_width) * widthScale); 68 m_height = static_cast<int>(static_cast<float>(m_height) * heightScale); 69 } 70 71 void scale(float scale) 72 { 73 this->scale(scale, scale); 74 } 75 76 IntSize expandedTo(const IntSize& other) const 77 { 78 return IntSize(m_width > other.m_width ? m_width : other.m_width, 79 m_height > other.m_height ? m_height : other.m_height); 80 } 81 82 IntSize shrunkTo(const IntSize& other) const 83 { 84 return IntSize(m_width < other.m_width ? m_width : other.m_width, 85 m_height < other.m_height ? m_height : other.m_height); 86 } 87 88 void clampNegativeToZero() 89 { 90 *this = expandedTo(IntSize()); 91 } 92 93 void clampToMinimumSize(const IntSize& minimumSize) 94 { 95 if (m_width < minimumSize.width()) 96 m_width = minimumSize.width(); 97 if (m_height < minimumSize.height()) 98 m_height = minimumSize.height(); 99 } 100 101 // Return area in a uint64_t to avoid overflow. 102 uint64_t area() const 103 { 104 return static_cast<uint64_t>(width()) * 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(MACOSX) 118 explicit IntSize(const CGSize&); // don't do this implicitly since it's lossy 119 operator CGSize() const; 120 121#if defined(__OBJC__) && !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 127private: 128 int m_width, m_height; 129}; 130 131inline 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 138inline 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 145inline IntSize operator+(const IntSize& a, const IntSize& b) 146{ 147 return IntSize(a.width() + b.width(), a.height() + b.height()); 148} 149 150inline IntSize operator-(const IntSize& a, const IntSize& b) 151{ 152 return IntSize(a.width() - b.width(), a.height() - b.height()); 153} 154 155inline IntSize operator-(const IntSize& size) 156{ 157 return IntSize(-size.width(), -size.height()); 158} 159 160inline bool operator==(const IntSize& a, const IntSize& b) 161{ 162 return a.width() == b.width() && a.height() == b.height(); 163} 164 165inline bool operator!=(const IntSize& a, const IntSize& b) 166{ 167 return a.width() != b.width() || a.height() != b.height(); 168} 169 170} // namespace blink 171 172#endif // IntSize_h 173