// This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
#ifndef WPOINT_H_
#define WPOINT_H_

#include "Wt/WDllDefs.h"

namespace Wt {

/*! \class WPoint Wt/WPoint Wt/WPoint
 *  \brief Utility class that defines a 2D point.
 *
 * \sa WImagePolygonArea
 */
class WT_API WPoint
{
public:
  /*! \brief Default constructor.
   *
   * Constructs a <i>null</i> point.
   *
   * \sa isNull()
   */
  WPoint();

  /*! \brief Construct a point.
   *
   * Constructs a point (<i>x</i>, <i>y</i>).
   */
  WPoint(int x, int y)
    : x_(x), y_(y) { }

  /*! \brief Check for a <i>null</i> point.
   *
   * \sa WPoint()
   */
  bool isNull() const;

  /*! \brief Changes the X coordinate.
   */
  void setX(int x) { x_ = x; }

  /*! \brief Changes the Y coordinate.
   */
  void setY(int y) { y_ = y; }

  /*! \brief Returns the X coordinate.
   */
  int x() const { return x_; }

  /*! \brief Returns the Y coordinate.
   */
  int y() const { return y_; }

  /*! \brief Comparison operator.
   */
  bool operator== (const WPoint& other) const;

  /*! \brief Comparison operator.
   */
  bool operator!= (const WPoint& other) const;

  WPoint& operator+= (const WPoint& other);

private:
  int x_, y_;
};

};

#endif // WPOINTF_H_
