vtkLineWidget2.h

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

  Program:   Visualization Toolkit
  Module:    vtkLineWidget2.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 vtkLineWidget2_h
#define vtkLineWidget2_h

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

class vtkLineRepresentation;
class vtkHandleWidget;

class VTKINTERACTIONWIDGETS_EXPORT vtkLineWidget2 : public vtkAbstractWidget
{
public:
  static vtkLineWidget2* New();


  vtkTypeMacro(vtkLineWidget2, vtkAbstractWidget);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void SetEnabled(int enabling) override;

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

  vtkLineRepresentation* GetLineRepresentation()
  {
    return reinterpret_cast<vtkLineRepresentation*>(this->WidgetRep);
  }

  void CreateDefaultRepresentation() override;

  void SetProcessEvents(vtkTypeBool) override;

protected:
  vtkLineWidget2();
  ~vtkLineWidget2() override;

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

  // These methods handle events
  static void SelectAction(vtkAbstractWidget*);
  static void TranslateAction(vtkAbstractWidget*);
  static void ScaleAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);

  // The positioning handle widgets
  vtkHandleWidget* Point1Widget; // first end point
  vtkHandleWidget* Point2Widget; // second end point
  vtkHandleWidget* LineHandle;   // used when selecting the line

  vtkCallbackCommand* KeyEventCallbackCommand;
  static void ProcessKeyEvents(vtkObject*, unsigned long, void*, void*);

private:
  vtkLineWidget2(const vtkLineWidget2&) = delete;
  void operator=(const vtkLineWidget2&) = delete;
};

#endif