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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_POINT_H_
#define UI_GFX_POINT_H_
#pragma once
#include <string>
#include "build/build_config.h"
#include "ui/base/ui_export.h"
#if defined(OS_WIN)
typedef unsigned long DWORD;
typedef struct tagPOINT POINT;
#elif defined(OS_MACOSX)
#include <ApplicationServices/ApplicationServices.h>
#endif
namespace gfx {
// A point has an x and y coordinate.
class UI_EXPORT Point {
public:
Point();
Point(int x, int y);
#if defined(OS_WIN)
// |point| is a DWORD value that contains a coordinate. The x-coordinate is
// the low-order short and the y-coordinate is the high-order short. This
// value is commonly acquired from GetMessagePos/GetCursorPos.
explicit Point(DWORD point);
explicit Point(const POINT& point);
Point& operator=(const POINT& point);
#elif defined(OS_MACOSX)
explicit Point(const CGPoint& point);
#endif
~Point() {}
int x() const { return x_; }
int y() const { return y_; }
void SetPoint(int x, int y) {
x_ = x;
y_ = y;
}
void set_x(int x) { x_ = x; }
void set_y(int y) { y_ = y; }
void Offset(int delta_x, int delta_y) {
x_ += delta_x;
y_ += delta_y;
}
Point Add(const Point& other) const{
Point copy = *this;
copy.Offset(other.x_, other.y_);
return copy;
}
Point Subtract(const Point& other) const {
Point copy = *this;
copy.Offset(-other.x_, -other.y_);
return copy;
}
Point Middle(const Point& other) const {
return Point((x_ + other.x_) / 2, (y_ + other.y_) / 2);
}
bool operator==(const Point& rhs) const {
return x_ == rhs.x_ && y_ == rhs.y_;
}
bool operator!=(const Point& rhs) const {
return !(*this == rhs);
}
// A point is less than another point if its y-value is closer
// to the origin. If the y-values are the same, then point with
// the x-value closer to the origin is considered less than the
// other.
// This comparison is required to use Points in sets, or sorted
// vectors.
bool operator<(const Point& rhs) const {
return (y_ == rhs.y_) ? (x_ < rhs.x_) : (y_ < rhs.y_);
}
#if defined(OS_WIN)
POINT ToPOINT() const;
#elif defined(OS_MACOSX)
CGPoint ToCGPoint() const;
#endif
// Returns a string representation of point.
std::string ToString() const;
private:
int x_;
int y_;
};
} // namespace gfx
#endif // UI_GFX_POINT_H_
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