vtkBiDimensionalWidget.h

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

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) override;

  void SetEnabled(int) override;

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

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

  void CreateDefaultRepresentation() override;

  int IsMeasureValid();

  enum
  {
    EndWidgetSelectEvent = 10050
  };

  void SetProcessEvents(vtkTypeBool) override;

  enum
  {
    Start = 0,
    Define,
    Manipulate
  };


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

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

protected:
  vtkBiDimensionalWidget();
  ~vtkBiDimensionalWidget() override;

  // 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();

  friend class vtkBiDimensionalWidgetCallback;

private:
  vtkBiDimensionalWidget(const vtkBiDimensionalWidget&) = delete;
  void operator=(const vtkBiDimensionalWidget&) = delete;
};

#endif