vtkWidgetCallbackMapper.h

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

  Program:   Visualization Toolkit
  Module:    vtkWidgetCallbackMapper.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 vtkWidgetCallbackMapper_h
#define vtkWidgetCallbackMapper_h

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

class vtkWidgetEvent;
class vtkAbstractWidget;
class vtkWidgetEventTranslator;
class vtkCallbackMap; // PIMPL encapsulation of STL map
class vtkEventData;

class VTKINTERACTIONWIDGETS_EXPORT vtkWidgetCallbackMapper : public vtkObject
{
public:
  static vtkWidgetCallbackMapper *New();


  vtkTypeMacro(vtkWidgetCallbackMapper,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  void SetEventTranslator(vtkWidgetEventTranslator *t);
  vtkGetObjectMacro(EventTranslator,vtkWidgetEventTranslator);

  typedef void (*CallbackType)(vtkAbstractWidget*);


  void SetCallbackMethod(unsigned long VTKEvent, unsigned long widgetEvent,
                         vtkAbstractWidget *w, CallbackType f);
  void SetCallbackMethod(unsigned long VTKEvent, int modifiers, char keyCode,
                         int repeatCount, const char* keySym,
                         unsigned long widgetEvent,
                         vtkAbstractWidget *w, CallbackType f);
  void SetCallbackMethod(unsigned long VTKEvent, vtkEventData *ed,
                         unsigned long widgetEvent,
                         vtkAbstractWidget *w, CallbackType f);
  //void SetCallbackMethod(vtkWidgetEvent *vtkEvent, unsigned long widgetEvent,
  //                       vtkAbstractWidget *w, CallbackType f);

  void InvokeCallback(unsigned long widgetEvent);

protected:
  vtkWidgetCallbackMapper();
  ~vtkWidgetCallbackMapper() override;

  // Translates VTK events into widget events
  vtkWidgetEventTranslator *EventTranslator;

  // Invoke the method associated with a particular widget event
  vtkCallbackMap *CallbackMap;

  void SetCallbackMethod(unsigned long widgetEvent,
                         vtkAbstractWidget *w, CallbackType f);


private:
  vtkWidgetCallbackMapper(const vtkWidgetCallbackMapper&) = delete;
  void operator=(const vtkWidgetCallbackMapper&) = delete;

};


#endif /* vtkWidgetCallbackMapper_h */