/*=========================================================================

   Program: ParaView
   Module:    $RCSfile: pqChartCoordinate.h,v $

   Copyright (c) 2005-2008 Sandia Corporation, Kitware Inc.
   All rights reserved.

   ParaView is a free software; you can redistribute it and/or modify it
   under the terms of the ParaView license version 1.2. 

   See License_v1.2.txt for the full ParaView license.
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=========================================================================*/

/*!
 * \file pqChartCoordinate.h
 *
 * \brief
 *   The pqChartCoordinate class stores an x, y coordinate for a chart.
 *
 * \author Mark Richardson
 * \date   August 19, 2005
 */

#ifndef _pqChartCoordinate_h
#define _pqChartCoordinate_h

#include "QtChartExport.h"
#include "pqChartValue.h" // Needed for x and y members.


/// \class pqChartCoordinate
/// \brief
///   The pqChartCoordinate class is used to store a pair of values.
///
/// The x and y coordinates are stored as pqChartValue objects, which
/// allows any combination of int, float, or double. This is useful
/// when the chart axes use different types. If the axis uses a list
/// of string labels, the coordinate should use an int for the index.
class QTCHART_EXPORT pqChartCoordinate
{
public:
  pqChartCoordinate();

  /// \brief
  ///   Creates a coordinate from two pqChartValue objects.
  /// \param px The x coordinate of the point.
  /// \param py The y coordinate of the point.
  pqChartCoordinate(const pqChartValue &px, const pqChartValue &py);

  /// \brief
  ///   Makes a copy of an existing coordinate.
  /// \param other The coordinate to copy.
  pqChartCoordinate(const pqChartCoordinate &other);
  ~pqChartCoordinate() {}

  /// \name Operators
  //@{
  bool operator==(const pqChartCoordinate &other) const;
  bool operator!=(const pqChartCoordinate &other) const;
  pqChartCoordinate &operator=(const pqChartCoordinate &other);
  //@}

public:
  pqChartValue X; ///< Stores the x coordinate.
  pqChartValue Y; ///< Stores the y coordinate.
};

#endif
