vtkDistanceWidget.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkDistanceWidget.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 vtkDistanceWidget_h
#define vtkDistanceWidget_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkAbstractWidget.h"
 
class vtkDistanceRepresentation;
class vtkHandleWidget;
class vtkDistanceWidgetCallback;
 
 
class VTKINTERACTIONWIDGETS_EXPORT vtkDistanceWidget : public vtkAbstractWidget
{
public:
  static vtkDistanceWidget *New();
 
 
  vtkTypeMacro(vtkDistanceWidget,vtkAbstractWidget);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  virtual void SetEnabled(int);
 
 
  void SetRepresentation(vtkDistanceRepresentation *r)
    {this->Superclass::SetWidgetRepresentation(
      reinterpret_cast<vtkWidgetRepresentation*>(r));}
 
 
  vtkDistanceRepresentation *GetDistanceRepresentation()
    {return reinterpret_cast<vtkDistanceRepresentation*>(this->WidgetRep);}
 
  void CreateDefaultRepresentation();
 
  virtual void SetProcessEvents(int);
 
 
  enum {Start=0,Define,Manipulate};
  //ETX
 
 
  virtual void SetWidgetStateToStart();
  virtual void SetWidgetStateToManipulate();
 
 
  virtual int GetWidgetState()
    {return this->WidgetState;}
 
protected:
  vtkDistanceWidget();
  ~vtkDistanceWidget();
 
  // The state of the widget
  int WidgetState;
  int CurrentHandle;
 
  // 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;
  vtkDistanceWidgetCallback *DistanceWidgetCallback1;
  vtkDistanceWidgetCallback *DistanceWidgetCallback2;
 
  // Methods invoked when the handles at the
  // end points of the widget are manipulated
  void StartDistanceInteraction(int handleNum);
  void DistanceInteraction(int handleNum);
  void EndDistanceInteraction(int handleNum);
 
//BTX
  friend class vtkDistanceWidgetCallback;
//ETX
 
private:
  vtkDistanceWidget(const vtkDistanceWidget&);  //Not implemented
  void operator=(const vtkDistanceWidget&);  //Not implemented
};
 
#endif