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// Copyright (c) 2012 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_F_H_
#define UI_GFX_POINT_F_H_
#pragma once
#include <string>
#include "build/build_config.h"
#include "ui/base/ui_export.h"
#if !defined(ENABLE_DIP)
#error "This class should be used only when DIP feature is enabled"
#endif
namespace gfx {
class Point;
// A floating versino of gfx::Point. This is copied, instead of using
// template, to avoid conflict with m19 branch.
// TODO(oshima): Merge this to ui/gfx/point.h using template.
class UI_EXPORT PointF {
public:
PointF();
PointF(float x, float y);
PointF(Point& point);
~PointF() {}
float x() const { return x_; }
float y() const { return y_; }
void SetPoint(float x, float y) {
x_ = x;
y_ = y;
}
void set_x(float x) { x_ = x; }
void set_y(float y) { y_ = y; }
void Offset(float delta_x, float delta_y) {
x_ += delta_x;
y_ += delta_y;
}
PointF Add(const PointF& other) const{
PointF copy = *this;
copy.Offset(other.x_, other.y_);
return copy;
}
PointF Subtract(const PointF& other) const {
PointF copy = *this;
copy.Offset(-other.x_, -other.y_);
return copy;
}
PointF Middle(const PointF& other) const {
return PointF((x_ + other.x_) / 2, (y_ + other.y_) / 2);
}
bool operator==(const PointF& rhs) const {
return x_ == rhs.x_ && y_ == rhs.y_;
}
bool operator!=(const PointF& 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 PointF& rhs) const {
return (y_ == rhs.y_) ? (x_ < rhs.x_) : (y_ < rhs.y_);
}
Point ToPoint() const;
// Returns a string representation of point.
std::string ToString() const;
private:
float x_;
float y_;
};
} // namespace gfx
#endif // UI_GFX_POINT_F_H_
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