1 /*
2 * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
3 * Copyright (C) 2005 Nokia. 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 FloatRect_h
28 #define FloatRect_h
29
30 #include "FloatPoint.h"
31
32 #if USE(CG) || USE(SKIA_ON_MAC_CHROME)
33 typedef struct CGRect CGRect;
34 #endif
35
36 #if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN))
37 #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
38 typedef struct CGRect NSRect;
39 #else
40 typedef struct _NSRect NSRect;
41 #endif
42 #endif
43
44 #if PLATFORM(QT)
45 QT_BEGIN_NAMESPACE
46 class QRectF;
47 QT_END_NAMESPACE
48 #endif
49
50 #if PLATFORM(WX) && USE(WXGC)
51 class wxRect2DDouble;
52 #endif
53
54 #if PLATFORM(HAIKU)
55 class BRect;
56 #endif
57
58 #if USE(SKIA)
59 struct SkRect;
60 #endif
61
62 #if USE(CAIRO)
63 typedef struct _cairo_rectangle cairo_rectangle_t;
64 #endif
65
66 namespace WebCore {
67
68 #if PLATFORM(OPENVG)
69 class VGRect;
70 #endif
71
72 class IntRect;
73
74 class FloatRect {
75 public:
FloatRect()76 FloatRect() { }
FloatRect(const FloatPoint & location,const FloatSize & size)77 FloatRect(const FloatPoint& location, const FloatSize& size)
78 : m_location(location), m_size(size) { }
FloatRect(float x,float y,float width,float height)79 FloatRect(float x, float y, float width, float height)
80 : m_location(FloatPoint(x, y)), m_size(FloatSize(width, height)) { }
81 FloatRect(const IntRect&);
82
83 static FloatRect narrowPrecision(double x, double y, double width, double height);
84
location()85 FloatPoint location() const { return m_location; }
size()86 FloatSize size() const { return m_size; }
87
setLocation(const FloatPoint & location)88 void setLocation(const FloatPoint& location) { m_location = location; }
setSize(const FloatSize & size)89 void setSize(const FloatSize& size) { m_size = size; }
90
x()91 float x() const { return m_location.x(); }
y()92 float y() const { return m_location.y(); }
maxX()93 float maxX() const { return x() + width(); }
maxY()94 float maxY() const { return y() + height(); }
width()95 float width() const { return m_size.width(); }
height()96 float height() const { return m_size.height(); }
97
setX(float x)98 void setX(float x) { m_location.setX(x); }
setY(float y)99 void setY(float y) { m_location.setY(y); }
setWidth(float width)100 void setWidth(float width) { m_size.setWidth(width); }
setHeight(float height)101 void setHeight(float height) { m_size.setHeight(height); }
102
isEmpty()103 bool isEmpty() const { return m_size.isEmpty(); }
104
center()105 FloatPoint center() const { return FloatPoint(x() + width() / 2, y() + height() / 2); }
106
move(const FloatSize & delta)107 void move(const FloatSize& delta) { m_location += delta; }
move(float dx,float dy)108 void move(float dx, float dy) { m_location.move(dx, dy); }
109
110 bool intersects(const FloatRect&) const;
111 bool contains(const FloatRect&) const;
112
113 void intersect(const FloatRect&);
114 void unite(const FloatRect&);
115 void uniteIfNonZero(const FloatRect&);
116
117 // Note, this doesn't match what IntRect::contains(IntPoint&) does; the int version
118 // is really checking for containment of 1x1 rect, but that doesn't make sense with floats.
contains(float px,float py)119 bool contains(float px, float py) const
120 { return px >= x() && px <= maxX() && py >= y() && py <= maxY(); }
contains(const FloatPoint & point)121 bool contains(const FloatPoint& point) const { return contains(point.x(), point.y()); }
122
inflateX(float dx)123 void inflateX(float dx) {
124 m_location.setX(m_location.x() - dx);
125 m_size.setWidth(m_size.width() + dx + dx);
126 }
inflateY(float dy)127 void inflateY(float dy) {
128 m_location.setY(m_location.y() - dy);
129 m_size.setHeight(m_size.height() + dy + dy);
130 }
inflate(float d)131 void inflate(float d) { inflateX(d); inflateY(d); }
scale(float s)132 void scale(float s) { scale(s, s); }
133 void scale(float sx, float sy);
134
135 // Re-initializes this rectangle to fit the sets of passed points.
136 void fitToPoints(const FloatPoint& p0, const FloatPoint& p1);
137 void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2);
138 void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& p3);
139
140 #if USE(CG) || USE(SKIA_ON_MAC_CHROME)
141 FloatRect(const CGRect&);
142 operator CGRect() const;
143 #endif
144
145 #if (PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)) \
146 || (PLATFORM(CHROMIUM) && OS(DARWIN))
147 FloatRect(const NSRect&);
148 operator NSRect() const;
149 #endif
150
151 #if PLATFORM(QT)
152 FloatRect(const QRectF&);
153 operator QRectF() const;
154 FloatRect normalized() const;
155 #endif
156
157 #if PLATFORM(WX) && USE(WXGC)
158 FloatRect(const wxRect2DDouble&);
159 operator wxRect2DDouble() const;
160 #endif
161
162 #if PLATFORM(HAIKU)
163 FloatRect(const BRect&);
164 operator BRect() const;
165 #endif
166
167 #if USE(SKIA)
168 FloatRect(const SkRect&);
169 operator SkRect() const;
170 #endif
171
172 #if PLATFORM(OPENVG)
173 operator VGRect() const;
174 #endif
175
176 #if USE(CAIRO)
177 FloatRect(const cairo_rectangle_t&);
178 operator cairo_rectangle_t() const;
179 #endif
180
181 private:
182 FloatPoint m_location;
183 FloatSize m_size;
184
setLocationAndSizeFromEdges(float left,float top,float right,float bottom)185 void setLocationAndSizeFromEdges(float left, float top, float right, float bottom)
186 {
187 m_location.set(left, top);
188 m_size.setWidth(right - left);
189 m_size.setHeight(bottom - top);
190 }
191 };
192
intersection(const FloatRect & a,const FloatRect & b)193 inline FloatRect intersection(const FloatRect& a, const FloatRect& b)
194 {
195 FloatRect c = a;
196 c.intersect(b);
197 return c;
198 }
199
unionRect(const FloatRect & a,const FloatRect & b)200 inline FloatRect unionRect(const FloatRect& a, const FloatRect& b)
201 {
202 FloatRect c = a;
203 c.unite(b);
204 return c;
205 }
206
207
208 inline bool operator==(const FloatRect& a, const FloatRect& b)
209 {
210 return a.location() == b.location() && a.size() == b.size();
211 }
212
213 inline bool operator!=(const FloatRect& a, const FloatRect& b)
214 {
215 return a.location() != b.location() || a.size() != b.size();
216 }
217
218 IntRect enclosingIntRect(const FloatRect&);
219
220 // Map rect r from srcRect to an equivalent rect in destRect.
221 FloatRect mapRect(const FloatRect& r, const FloatRect& srcRect, const FloatRect& destRect);
222
223 }
224
225 #endif
226