vtkVRMenuWidget.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkVRMenuWidget_h
#define vtkVRMenuWidget_h
 
#include "vtkAbstractWidget.h"
#include "vtkRenderingVRModule.h" // For export macro
#include <deque>                  // for ivar
 
VTK_ABI_NAMESPACE_BEGIN
class vtkEventData;
class vtkVRMenuRepresentation;
 
class VTKRENDERINGVR_EXPORT vtkVRMenuWidget : public vtkAbstractWidget
{
public:
  static vtkVRMenuWidget* New();


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

  void SetRepresentation(vtkVRMenuRepresentation* rep);

  void CreateDefaultRepresentation() override;


  vtkGetMacro(WidgetState, int);
 
  // Manage the state of the widget
  enum WidgetStateType
  {
    Start = 0,
    Active
  };


  void PushFrontMenuItem(const char* name, const char* text, vtkCommand* cmd);
  void RenameMenuItem(const char* name, const char* text);
  void RemoveMenuItem(const char* name);
  void RemoveAllMenuItems();
 
  void Show(vtkEventData* ed);
  void ShowSubMenu(vtkVRMenuWidget*);
 
protected:
  vtkVRMenuWidget();
  ~vtkVRMenuWidget() override;
 
  int WidgetState;
 
  class InternalElement;
  std::deque<InternalElement*> Menus;
 
  // These are the callbacks for this widget
  static void StartMenuAction(vtkAbstractWidget*);
  static void SelectMenuAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
 
  vtkCallbackCommand* EventCommand;
  static void EventCallback(
    vtkObject* object, unsigned long event, void* clientdata, void* calldata);

  static void Update(vtkAbstractWidget*);
 
private:
  vtkVRMenuWidget(const vtkVRMenuWidget&) = delete;
  void operator=(const vtkVRMenuWidget&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif