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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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_INT_POINT_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_INT_POINT_H_
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"
#include "third_party/blink/renderer/platform/wtf/saturated_arithmetic.h"
#include "third_party/blink/renderer/platform/wtf/vector_traits.h"
#if defined(OS_MACOSX)
typedef struct CGPoint CGPoint;
#ifdef __OBJC__
#import <Foundation/Foundation.h>
#endif
#endif
namespace gfx {
class Point;
class Vector2d;
}
namespace blink {
class PLATFORM_EXPORT IntPoint {
USING_FAST_MALLOC(IntPoint);
public:
constexpr IntPoint() : x_(0), y_(0) {}
constexpr IntPoint(int x, int y) : x_(x), y_(y) {}
explicit IntPoint(const IntSize& size)
: x_(size.Width()), y_(size.Height()) {}
static IntPoint Zero() { return IntPoint(); }
constexpr int X() const { return x_; }
constexpr int Y() const { return y_; }
void SetX(int x) { x_ = x; }
void SetY(int y) { 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) {
x_ += dx;
y_ += dy;
}
void SaturatedMove(int dx, int dy) {
x_ = ClampAdd(x_, dx);
y_ = ClampAdd(y_, dy);
}
void Scale(float sx, float sy) {
x_ = lroundf(static_cast<float>(x_ * sx));
y_ = lroundf(static_cast<float>(y_ * sy));
}
IntPoint ExpandedTo(const IntPoint& other) const {
return IntPoint(x_ > other.x_ ? x_ : other.x_,
y_ > other.y_ ? y_ : other.y_);
}
IntPoint ShrunkTo(const IntPoint& other) const {
return IntPoint(x_ < other.x_ ? x_ : other.x_,
y_ < other.y_ ? y_ : other.y_);
}
int DistanceSquaredToPoint(const IntPoint&) const;
void ClampNegativeToZero() { *this = ExpandedTo(Zero()); }
IntPoint TransposedPoint() const { return IntPoint(y_, x_); }
#if defined(OS_MACOSX)
explicit IntPoint(
const CGPoint&); // don't do this implicitly since it's lossy
operator CGPoint() const;
#endif
operator gfx::Point() const;
// IntPoint is used as an offset, but outside blink, the Vector2d type is used
// for offsets instead. Addition of Point+Vector2d gives an offseted Point.
explicit operator gfx::Vector2d() const;
String ToString() const;
private:
int x_, 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;
}
constexpr IntPoint operator+(const IntPoint& a, const IntSize& b) {
return IntPoint(a.X() + b.Width(), a.Y() + b.Height());
}
constexpr IntPoint operator+(const IntPoint& a, const IntPoint& b) {
return IntPoint(a.X() + b.X(), a.Y() + b.Y());
}
constexpr IntSize operator-(const IntPoint& a, const IntPoint& b) {
return IntSize(a.X() - b.X(), a.Y() - b.Y());
}
constexpr IntPoint operator-(const IntPoint& a, const IntSize& b) {
return IntPoint(a.X() - b.Width(), a.Y() - b.Height());
}
constexpr IntPoint operator-(const IntPoint& point) {
return IntPoint(-point.X(), -point.Y());
}
constexpr bool operator==(const IntPoint& a, const IntPoint& b) {
return a.X() == b.X() && a.Y() == b.Y();
}
constexpr bool operator!=(const IntPoint& a, const IntPoint& b) {
return !(a == b);
}
inline IntSize ToIntSize(const IntPoint& a) {
return IntSize(a.X(), a.Y());
}
inline int IntPoint::DistanceSquaredToPoint(const IntPoint& point) const {
return ((*this) - point).DiagonalLengthSquared();
}
PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const IntPoint&);
PLATFORM_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const IntPoint&);
} // namespace blink
WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::IntPoint);
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_INT_POINT_H_
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