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

  Program:   Visualization Toolkit
  Module:    vtkBiDimensionalWidget.h,v

  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.

=========================================================================*/
#ifndef vtkBiDimensionalWidget_h
#define vtkBiDimensionalWidget_h

#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkAbstractWidget.h"

class vtkBiDimensionalRepresentation;
class vtkHandleWidget;
class vtkBiDimensionalWidgetCallback;


class VTKINTERACTIONWIDGETS_EXPORT vtkBiDimensionalWidget : public vtkAbstractWidget
{
public:
  static vtkBiDimensionalWidget *New();


  vtkTypeMacro(vtkBiDimensionalWidget,vtkAbstractWidget);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void SetEnabled(int);


  void SetRepresentation(vtkBiDimensionalRepresentation *r)
    {this->Superclass::SetWidgetRepresentation(reinterpret_cast<vtkWidgetRepresentation*>(r));}


  vtkBiDimensionalRepresentation *GetBiDimensionalRepresentation()
    {return reinterpret_cast<vtkBiDimensionalRepresentation*>(this->WidgetRep);}

  void CreateDefaultRepresentation();

  int IsMeasureValid();

  //BTX

  enum
  {
  EndWidgetSelectEvent = 10050
  };
  //ETX

  virtual void SetProcessEvents(int);


  enum {Start=0,Define,Manipulate};
  //ETX


  virtual void SetWidgetStateToStart();
  virtual void SetWidgetStateToManipulate();


  virtual int GetWidgetState()
    {return this->WidgetState;}

protected:
  vtkBiDimensionalWidget();
  ~vtkBiDimensionalWidget();

  // The state of the widget
  int WidgetState;
  int CurrentHandle;
  int HandleLine1Selected;
  int HandleLine2Selected;
  int Line1InnerSelected;
  int Line1OuterSelected;
  int Line2InnerSelected;
  int Line2OuterSelected;
  int CenterSelected;

  // Callback interface to capture events when
  // placing the widget.
  static void AddPointAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);

  // The positioning handle widgets
  vtkHandleWidget *Point1Widget;
  vtkHandleWidget *Point2Widget;
  vtkHandleWidget *Point3Widget;
  vtkHandleWidget *Point4Widget;
  vtkBiDimensionalWidgetCallback *BiDimensionalWidgetCallback1;
  vtkBiDimensionalWidgetCallback *BiDimensionalWidgetCallback2;
  vtkBiDimensionalWidgetCallback *BiDimensionalWidgetCallback3;
  vtkBiDimensionalWidgetCallback *BiDimensionalWidgetCallback4;

  // Methods invoked when the handles at the
  // end points of the widget are manipulated
  void StartBiDimensionalInteraction();
  virtual void EndBiDimensionalInteraction();

//BTX
  friend class vtkBiDimensionalWidgetCallback;
//ETX

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

#endif