vtkLineWidget2.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkLineWidget2_h
#define vtkLineWidget2_h
 
#include "vtkAbstractWidget.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWrappingHints.h"            // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkLineRepresentation;
class vtkHandleWidget;
 
class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO 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 WidgetStateType
  {
    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;
};
 
VTK_ABI_NAMESPACE_END
#endif