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/*
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IntPoint_h
#define IntPoint_h
#include "platform/geometry/IntSize.h"
#include "wtf/MathExtras.h"
#include "wtf/VectorTraits.h"
#if OS(MACOSX)
typedef struct CGPoint CGPoint;
#ifdef __OBJC__
#import <Foundation/Foundation.h>
#endif
#endif
namespace blink {
class PLATFORM_EXPORT IntPoint {
public:
IntPoint() : m_x(0), m_y(0) { }
IntPoint(int x, int y) : m_x(x), m_y(y) { }
explicit IntPoint(const IntSize& size) : m_x(size.width()), m_y(size.height()) { }
static IntPoint zero() { return IntPoint(); }
int x() const { return m_x; }
int y() const { return m_y; }
void setX(int x) { m_x = x; }
void setY(int y) { m_y = y; }
void move(const IntSize& s) { move(s.width(), s.height()); }
void moveBy(const IntPoint& offset) { move(offset.x(), offset.y()); }
void move(int dx, int dy) { m_x += dx; m_y += dy; }
void scale(float sx, float sy)
{
m_x = lroundf(static_cast<float>(m_x * sx));
m_y = lroundf(static_cast<float>(m_y * sy));
}
IntPoint expandedTo(const IntPoint& other) const
{
return IntPoint(m_x > other.m_x ? m_x : other.m_x,
m_y > other.m_y ? m_y : other.m_y);
}
IntPoint shrunkTo(const IntPoint& other) const
{
return IntPoint(m_x < other.m_x ? m_x : other.m_x,
m_y < other.m_y ? m_y : other.m_y);
}
int distanceSquaredToPoint(const IntPoint&) const;
void clampNegativeToZero()
{
*this = expandedTo(zero());
}
IntPoint transposedPoint() const
{
return IntPoint(m_y, m_x);
}
#if OS(MACOSX)
explicit IntPoint(const CGPoint&); // don't do this implicitly since it's lossy
operator CGPoint() const;
#if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
explicit IntPoint(const NSPoint&); // don't do this implicitly since it's lossy
operator NSPoint() const;
#endif
#endif
private:
int m_x, m_y;
};
inline IntPoint& operator+=(IntPoint& a, const IntSize& b)
{
a.move(b.width(), b.height());
return a;
}
inline IntPoint& operator-=(IntPoint& a, const IntSize& b)
{
a.move(-b.width(), -b.height());
return a;
}
inline IntPoint operator+(const IntPoint& a, const IntSize& b)
{
return IntPoint(a.x() + b.width(), a.y() + b.height());
}
inline IntPoint operator+(const IntPoint& a, const IntPoint& b)
{
return IntPoint(a.x() + b.x(), a.y() + b.y());
}
inline IntSize operator-(const IntPoint& a, const IntPoint& b)
{
return IntSize(a.x() - b.x(), a.y() - b.y());
}
inline IntPoint operator-(const IntPoint& a, const IntSize& b)
{
return IntPoint(a.x() - b.width(), a.y() - b.height());
}
inline IntPoint operator-(const IntPoint& point)
{
return IntPoint(-point.x(), -point.y());
}
inline bool operator==(const IntPoint& a, const IntPoint& b)
{
return a.x() == b.x() && a.y() == b.y();
}
inline bool operator!=(const IntPoint& a, const IntPoint& b)
{
return a.x() != b.x() || a.y() != b.y();
}
inline IntSize toIntSize(const IntPoint& a)
{
return IntSize(a.x(), a.y());
}
inline int IntPoint::distanceSquaredToPoint(const IntPoint& point) const
{
return ((*this) - point).diagonalLengthSquared();
}
} // namespace blink
WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::IntPoint);
#endif // IntPoint_h
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