1 /* 2 * Copyright (C) 2003, 2006, 2009 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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef IntRect_h 27 #define IntRect_h 28 29 #include "platform/geometry/IntPoint.h" 30 #include "wtf/FastAllocBase.h" 31 #include "wtf/Vector.h" 32 #include "wtf/VectorTraits.h" 33 34 #if OS(MACOSX) 35 typedef struct CGRect CGRect; 36 37 #ifdef __OBJC__ 38 #import <Foundation/Foundation.h> 39 #endif 40 #endif 41 42 struct SkRect; 43 struct SkIRect; 44 45 namespace WebCore { 46 47 class FloatRect; 48 class LayoutRect; 49 50 class PLATFORM_EXPORT IntRect { 51 WTF_MAKE_FAST_ALLOCATED; 52 public: 53 IntRect() { } 54 IntRect(const IntPoint& location, const IntSize& size) 55 : m_location(location), m_size(size) { } 56 IntRect(int x, int y, int width, int height) 57 : m_location(IntPoint(x, y)), m_size(IntSize(width, height)) { } 58 59 explicit IntRect(const FloatRect&); // don't do this implicitly since it's lossy 60 explicit IntRect(const LayoutRect&); // don't do this implicitly since it's lossy 61 62 IntPoint location() const { return m_location; } 63 IntSize size() const { return m_size; } 64 65 void setLocation(const IntPoint& location) { m_location = location; } 66 void setSize(const IntSize& size) { m_size = size; } 67 68 int x() const { return m_location.x(); } 69 int y() const { return m_location.y(); } 70 int maxX() const { return x() + width(); } 71 int maxY() const { return y() + height(); } 72 int width() const { return m_size.width(); } 73 int height() const { return m_size.height(); } 74 75 void setX(int x) { m_location.setX(x); } 76 void setY(int y) { m_location.setY(y); } 77 void setWidth(int width) { m_size.setWidth(width); } 78 void setHeight(int height) { m_size.setHeight(height); } 79 80 bool isEmpty() const { return m_size.isEmpty(); } 81 82 // NOTE: The result is rounded to integer values, and thus may be not the exact 83 // center point. 84 IntPoint center() const { return IntPoint(x() + width() / 2, y() + height() / 2); } 85 86 void move(const IntSize& size) { m_location += size; } 87 void moveBy(const IntPoint& offset) { m_location.move(offset.x(), offset.y()); } 88 void move(int dx, int dy) { m_location.move(dx, dy); } 89 90 void expand(const IntSize& size) { m_size += size; } 91 void expand(int dw, int dh) { m_size.expand(dw, dh); } 92 void contract(const IntSize& size) { m_size -= size; } 93 void contract(int dw, int dh) { m_size.expand(-dw, -dh); } 94 95 void shiftXEdgeTo(int edge) 96 { 97 int delta = edge - x(); 98 setX(edge); 99 setWidth(std::max(0, width() - delta)); 100 } 101 void shiftMaxXEdgeTo(int edge) 102 { 103 int delta = edge - maxX(); 104 setWidth(std::max(0, width() + delta)); 105 } 106 void shiftYEdgeTo(int edge) 107 { 108 int delta = edge - y(); 109 setY(edge); 110 setHeight(std::max(0, height() - delta)); 111 } 112 void shiftMaxYEdgeTo(int edge) 113 { 114 int delta = edge - maxY(); 115 setHeight(std::max(0, height() + delta)); 116 } 117 118 IntPoint minXMinYCorner() const { return m_location; } // typically topLeft 119 IntPoint maxXMinYCorner() const { return IntPoint(m_location.x() + m_size.width(), m_location.y()); } // typically topRight 120 IntPoint minXMaxYCorner() const { return IntPoint(m_location.x(), m_location.y() + m_size.height()); } // typically bottomLeft 121 IntPoint maxXMaxYCorner() const { return IntPoint(m_location.x() + m_size.width(), m_location.y() + m_size.height()); } // typically bottomRight 122 123 bool intersects(const IntRect&) const; 124 bool contains(const IntRect&) const; 125 126 // This checks to see if the rect contains x,y in the traditional sense. 127 // Equivalent to checking if the rect contains a 1x1 rect below and to the right of (px,py). 128 bool contains(int px, int py) const 129 { return px >= x() && px < maxX() && py >= y() && py < maxY(); } 130 bool contains(const IntPoint& point) const { return contains(point.x(), point.y()); } 131 132 void intersect(const IntRect&); 133 void unite(const IntRect&); 134 void uniteIfNonZero(const IntRect&); 135 136 void inflateX(int dx) 137 { 138 m_location.setX(m_location.x() - dx); 139 m_size.setWidth(m_size.width() + dx + dx); 140 } 141 void inflateY(int dy) 142 { 143 m_location.setY(m_location.y() - dy); 144 m_size.setHeight(m_size.height() + dy + dy); 145 } 146 void inflate(int d) { inflateX(d); inflateY(d); } 147 void scale(float s); 148 149 IntSize differenceToPoint(const IntPoint&) const; 150 int distanceSquaredToPoint(const IntPoint& p) const { return differenceToPoint(p).diagonalLengthSquared(); } 151 152 IntRect transposedRect() const { return IntRect(m_location.transposedPoint(), m_size.transposedSize()); } 153 154 #if OS(MACOSX) 155 operator CGRect() const; 156 #if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) 157 operator NSRect() const; 158 #endif 159 #endif 160 161 operator SkRect() const; 162 operator SkIRect() const; 163 164 #ifndef NDEBUG 165 // Prints the rect to the screen. 166 void show() const; 167 #endif 168 169 private: 170 IntPoint m_location; 171 IntSize m_size; 172 }; 173 174 inline IntRect intersection(const IntRect& a, const IntRect& b) 175 { 176 IntRect c = a; 177 c.intersect(b); 178 return c; 179 } 180 181 inline IntRect unionRect(const IntRect& a, const IntRect& b) 182 { 183 IntRect c = a; 184 c.unite(b); 185 return c; 186 } 187 188 PLATFORM_EXPORT IntRect unionRect(const Vector<IntRect>&); 189 190 inline bool operator==(const IntRect& a, const IntRect& b) 191 { 192 return a.location() == b.location() && a.size() == b.size(); 193 } 194 195 inline bool operator!=(const IntRect& a, const IntRect& b) 196 { 197 return a.location() != b.location() || a.size() != b.size(); 198 } 199 200 #if OS(MACOSX) 201 PLATFORM_EXPORT IntRect enclosingIntRect(const CGRect&); 202 #if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) 203 PLATFORM_EXPORT IntRect enclosingIntRect(const NSRect&); 204 #endif 205 #endif 206 207 } // namespace WebCore 208 209 namespace WTF { 210 211 template<> 212 struct VectorTraits<WebCore::IntRect> : SimpleClassVectorTraits<WebCore::IntRect> { }; 213 214 } // namespace WTF 215 216 #endif // IntRect_h 217
