vtkAffineWidget.h

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

  Program:   Visualization Toolkit
  Module:    vtkAffineWidget.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.

=========================================================================*/
#ifndef vtkAffineWidget_h
#define vtkAffineWidget_h

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

class vtkAffineRepresentation;

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


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

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

  vtkAffineRepresentation* GetAffineRepresentation()
  {
    return reinterpret_cast<vtkAffineRepresentation*>(this->WidgetRep);
  }

  void CreateDefaultRepresentation() override;

  void SetEnabled(int) override;

protected:
  vtkAffineWidget();
  ~vtkAffineWidget() override;

  // These are the callbacks for this widget
  static void SelectAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
  static void ModifyEventAction(vtkAbstractWidget*);

  // helper methods for cursor management
  void SetCursor(int state) override;

  // Manage the state of the widget
  int WidgetState;
  enum _WidgetState
  {
    Start = 0,
    Active
  };

  // Keep track whether key modifier key is pressed
  int ModifierActive;

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

#endif