1 | /* |
2 | * Copyright (C) 2004-2016 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 | #pragma once |
27 | |
28 | #include "IntSize.h" |
29 | #include <cmath> |
30 | |
31 | #if PLATFORM(MAC) && defined __OBJC__ |
32 | #import <Foundation/NSGeometry.h> |
33 | #endif |
34 | |
35 | #if USE(CG) |
36 | typedef struct CGPoint CGPoint; |
37 | #endif |
38 | |
39 | |
40 | #if !PLATFORM(IOS_FAMILY) |
41 | #if OS(DARWIN) |
42 | #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES |
43 | typedef struct CGPoint NSPoint; |
44 | #else |
45 | typedef struct _NSPoint NSPoint; |
46 | #endif |
47 | #endif |
48 | #endif // !PLATFORM(IOS_FAMILY) |
49 | |
50 | #if PLATFORM(WIN) |
51 | typedef struct tagPOINT POINT; |
52 | typedef struct tagPOINTS POINTS; |
53 | |
54 | struct D2D_POINT_2U; |
55 | typedef D2D_POINT_2U D2D1_POINT_2U; |
56 | |
57 | struct D2D_POINT_2F; |
58 | typedef D2D_POINT_2F D2D1_POINT_2F; |
59 | #endif |
60 | |
61 | namespace WTF { |
62 | class TextStream; |
63 | } |
64 | |
65 | namespace WebCore { |
66 | |
67 | class FloatPoint; |
68 | |
69 | class IntPoint { |
70 | public: |
71 | IntPoint() : m_x(0), m_y(0) { } |
72 | IntPoint(int x, int y) : m_x(x), m_y(y) { } |
73 | explicit IntPoint(const IntSize& size) : m_x(size.width()), m_y(size.height()) { } |
74 | WEBCORE_EXPORT explicit IntPoint(const FloatPoint&); // don't do this implicitly since it's lossy |
75 | |
76 | static IntPoint zero() { return IntPoint(); } |
77 | bool isZero() const { return !m_x && !m_y; } |
78 | |
79 | int x() const { return m_x; } |
80 | int y() const { return m_y; } |
81 | |
82 | void setX(int x) { m_x = x; } |
83 | void setY(int y) { m_y = y; } |
84 | |
85 | void move(const IntSize& s) { move(s.width(), s.height()); } |
86 | void moveBy(const IntPoint& offset) { move(offset.x(), offset.y()); } |
87 | void move(int dx, int dy) { m_x += dx; m_y += dy; } |
88 | void scale(float sx, float sy) |
89 | { |
90 | m_x = lroundf(static_cast<float>(m_x * sx)); |
91 | m_y = lroundf(static_cast<float>(m_y * sy)); |
92 | } |
93 | |
94 | void scale(float scale) |
95 | { |
96 | this->scale(scale, scale); |
97 | } |
98 | |
99 | IntPoint expandedTo(const IntPoint& other) const |
100 | { |
101 | return { |
102 | m_x > other.m_x ? m_x : other.m_x, |
103 | m_y > other.m_y ? m_y : other.m_y |
104 | }; |
105 | } |
106 | |
107 | IntPoint shrunkTo(const IntPoint& other) const |
108 | { |
109 | return { |
110 | m_x < other.m_x ? m_x : other.m_x, |
111 | m_y < other.m_y ? m_y : other.m_y |
112 | }; |
113 | } |
114 | |
115 | WEBCORE_EXPORT IntPoint constrainedBetween(const IntPoint& min, const IntPoint& max) const; |
116 | |
117 | int distanceSquaredToPoint(const IntPoint&) const; |
118 | |
119 | void clampNegativeToZero() |
120 | { |
121 | *this = expandedTo(zero()); |
122 | } |
123 | |
124 | IntPoint transposedPoint() const |
125 | { |
126 | return IntPoint(m_y, m_x); |
127 | } |
128 | |
129 | #if USE(CG) |
130 | WEBCORE_EXPORT explicit IntPoint(const CGPoint&); // don't do this implicitly since it's lossy |
131 | WEBCORE_EXPORT operator CGPoint() const; |
132 | #endif |
133 | |
134 | #if !PLATFORM(IOS_FAMILY) |
135 | #if OS(DARWIN) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) |
136 | WEBCORE_EXPORT explicit IntPoint(const NSPoint&); // don't do this implicitly since it's lossy |
137 | WEBCORE_EXPORT operator NSPoint() const; |
138 | #endif |
139 | #endif // !PLATFORM(IOS_FAMILY) |
140 | |
141 | #if PLATFORM(WIN) |
142 | IntPoint(const POINT&); |
143 | operator POINT() const; |
144 | IntPoint(const POINTS&); |
145 | operator POINTS() const; |
146 | |
147 | IntPoint(const D2D1_POINT_2U&); |
148 | explicit IntPoint(const D2D1_POINT_2F&); // Don't do this implicitly, since it's lossy. |
149 | operator D2D1_POINT_2F() const; |
150 | operator D2D1_POINT_2U() const; |
151 | #endif |
152 | |
153 | private: |
154 | int m_x, m_y; |
155 | }; |
156 | |
157 | inline IntPoint& operator+=(IntPoint& a, const IntSize& b) |
158 | { |
159 | a.move(b.width(), b.height()); |
160 | return a; |
161 | } |
162 | |
163 | inline IntPoint& operator-=(IntPoint& a, const IntSize& b) |
164 | { |
165 | a.move(-b.width(), -b.height()); |
166 | return a; |
167 | } |
168 | |
169 | inline IntPoint operator+(const IntPoint& a, const IntSize& b) |
170 | { |
171 | return IntPoint(a.x() + b.width(), a.y() + b.height()); |
172 | } |
173 | |
174 | inline IntPoint operator+(const IntPoint& a, const IntPoint& b) |
175 | { |
176 | return IntPoint(a.x() + b.x(), a.y() + b.y()); |
177 | } |
178 | |
179 | inline IntSize operator-(const IntPoint& a, const IntPoint& b) |
180 | { |
181 | return IntSize(a.x() - b.x(), a.y() - b.y()); |
182 | } |
183 | |
184 | inline IntPoint operator-(const IntPoint& a, const IntSize& b) |
185 | { |
186 | return IntPoint(a.x() - b.width(), a.y() - b.height()); |
187 | } |
188 | |
189 | inline IntPoint operator-(const IntPoint& point) |
190 | { |
191 | return IntPoint(-point.x(), -point.y()); |
192 | } |
193 | |
194 | inline bool operator==(const IntPoint& a, const IntPoint& b) |
195 | { |
196 | return a.x() == b.x() && a.y() == b.y(); |
197 | } |
198 | |
199 | inline bool operator!=(const IntPoint& a, const IntPoint& b) |
200 | { |
201 | return a.x() != b.x() || a.y() != b.y(); |
202 | } |
203 | |
204 | inline IntSize toIntSize(const IntPoint& a) |
205 | { |
206 | return IntSize(a.x(), a.y()); |
207 | } |
208 | |
209 | inline int IntPoint::distanceSquaredToPoint(const IntPoint& point) const |
210 | { |
211 | return ((*this) - point).diagonalLengthSquared(); |
212 | } |
213 | |
214 | WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const IntPoint&); |
215 | |
216 | } // namespace WebCore |
217 | |
218 | namespace WTF { |
219 | template<> struct DefaultHash<WebCore::IntPoint>; |
220 | template<> struct HashTraits<WebCore::IntPoint>; |
221 | } |
222 | |