| // 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_GEOMETRY_POINT_H_ |
| #define UI_GFX_GEOMETRY_POINT_H_ |
| |
| #include <iosfwd> |
| #include <string> |
| |
| #include "ui/gfx/geometry/point_f.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| #include "ui/gfx/gfx_export.h" |
| |
| namespace gfx { |
| |
| // A point has an x and y coordinate. |
| class GFX_EXPORT Point { |
| public: |
| Point() : x_(0), y_(0) {} |
| Point(int x, int y) : x_(x), y_(y) {} |
| |
| ~Point() {} |
| |
| int x() const { return x_; } |
| int y() const { return y_; } |
| void set_x(int x) { x_ = x; } |
| void set_y(int y) { y_ = y; } |
| |
| void SetPoint(int x, int y) { |
| x_ = x; |
| y_ = y; |
| } |
| |
| void Offset(int delta_x, int delta_y) { |
| x_ += delta_x; |
| y_ += delta_y; |
| } |
| |
| void operator+=(const Vector2d& vector) { |
| x_ += vector.x(); |
| y_ += vector.y(); |
| } |
| |
| void operator-=(const Vector2d& vector) { |
| x_ -= vector.x(); |
| y_ -= vector.y(); |
| } |
| |
| void SetToMin(const Point& other); |
| void SetToMax(const Point& other); |
| |
| bool IsOrigin() const { return x_ == 0 && y_ == 0; } |
| |
| Vector2d OffsetFromOrigin() const { return Vector2d(x_, y_); } |
| |
| // 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 Point in sets, or sorted |
| // vectors. |
| bool operator<(const Point& rhs) const { |
| return (y_ == rhs.y_) ? (x_ < rhs.x_) : (y_ < rhs.y_); |
| } |
| |
| operator PointF() const { |
| return PointF(x(), y()); |
| } |
| |
| // Returns a string representation of point. |
| std::string ToString() const; |
| |
| private: |
| int x_; |
| int y_; |
| }; |
| |
| inline bool operator==(const Point& lhs, const Point& rhs) { |
| return lhs.x() == rhs.x() && lhs.y() == rhs.y(); |
| } |
| |
| inline bool operator!=(const Point& lhs, const Point& rhs) { |
| return !(lhs == rhs); |
| } |
| |
| inline Point operator+(const Point& lhs, const Vector2d& rhs) { |
| Point result(lhs); |
| result += rhs; |
| return result; |
| } |
| |
| inline Point operator-(const Point& lhs, const Vector2d& rhs) { |
| Point result(lhs); |
| result -= rhs; |
| return result; |
| } |
| |
| inline Vector2d operator-(const Point& lhs, const Point& rhs) { |
| return Vector2d(lhs.x() - rhs.x(), lhs.y() - rhs.y()); |
| } |
| |
| inline Point PointAtOffsetFromOrigin(const Vector2d& offset_from_origin) { |
| return Point(offset_from_origin.x(), offset_from_origin.y()); |
| } |
| |
| // This is declared here for use in gtest-based unit tests but is defined in |
| // the gfx_test_support target. Depend on that to use this in your unit test. |
| // This should not be used in production code - call ToString() instead. |
| void PrintTo(const Point& point, ::std::ostream* os); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GEOMETRY_POINT_H_ |