vtkWidgetCallbackMapper.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkWidgetCallbackMapper_h
#define vtkWidgetCallbackMapper_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkObject.h"
 
VTK_ABI_NAMESPACE_BEGIN
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;
};
 
VTK_ABI_NAMESPACE_END
#endif /* vtkWidgetCallbackMapper_h */