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

  Program:   Visualization Toolkit
  Module:    vtkContinuousValueWidgetRepresentation.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

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

/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/

// .NAME vtkContinuousValueWidgetRepresentation - provide the representation for a continuous value
// .SECTION Description
// This class is used mainly as a superclass for continuous value widgets
//


#ifndef __vtkContinuousValueWidgetRepresentation_h
#define __vtkContinuousValueWidgetRepresentation_h

#include "vtkWidgetRepresentation.h"

class VTK_WIDGETS_EXPORT vtkContinuousValueWidgetRepresentation : 
  public vtkWidgetRepresentation
{
public:
  // Description:
  // Standard methods for the class.
  vtkTypeMacro(vtkContinuousValueWidgetRepresentation,
                       vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);
  
  // Description:
  // Methods to interface with the vtkSliderWidget. The PlaceWidget() method
  // assumes that the parameter bounds[6] specifies the location in display
  // space where the widget should be placed.
  virtual void PlaceWidget(double bounds[6]);
  virtual void BuildRepresentation() {};
  virtual void StartWidgetInteraction(double eventPos[2]) = 0;
  virtual void WidgetInteraction(double eventPos[2]) = 0;
//  virtual void Highlight(int);

//BTX
  // Enums are used to describe what is selected
  enum _InteractionState
  {
    Outside=0,
    Inside,
    Adjusting
  };
//ETX

  // Set/Get the value
  virtual void SetValue(double value);
  virtual double GetValue() {return this->Value;};

protected:
  vtkContinuousValueWidgetRepresentation();
  ~vtkContinuousValueWidgetRepresentation();

  double Value;

private:
  vtkContinuousValueWidgetRepresentation
  (const vtkContinuousValueWidgetRepresentation&);  //Not implemented
  void operator=(const vtkContinuousValueWidgetRepresentation&); // Not implemented
};

#endif