#ifndef __CPPLUGINS__EXTENSIONS__VISUALIZATION__IMAGEINTERACTORSTYLE__H__
#define __CPPLUGINS__EXTENSIONS__VISUALIZATION__IMAGEINTERACTORSTYLE__H__

#include <vtkInteractorStyleImage.h>
#include <vtkOrientationMarkerWidget.h>
#include <vtkPropPicker.h>
#include <vtkSmartPointer.h>

/* TODO
   #include <vtkInteractorStyleImage.h>
   #include <vtkLineWidget2.h>
   #include <vtkLineRepresentation.h>
   #include <vtkPlane.h>
   class vtkImageData;
*/

namespace cpPlugins
{
  namespace Extensions
  {
    namespace Visualization
    {
      class ImageSliceActors;
      class MPRActors;

      /**
       */
      class ImageInteractorStyle
        : public vtkInteractorStyleImage
      {
      public:
        typedef ImageInteractorStyle Self;

        enum InteractionMode
        {
          NavigationMode = 0,
          DeformationMode
        };

      public:
        vtkTypeMacro( ImageInteractorStyle, vtkInteractorStyleImage );

      public:
        static Self* New( );

        void Configure(
          ImageSliceActors* slice_actors,
          MPRActors* mpr_actors = NULL
          );

        void SetModeToNavigation( );
        void SetModeToDeformation( );
        virtual void SetInteractor(
          vtkRenderWindowInteractor* interactor, const int& axis
          );

        // Description:
        // Event bindings controlling the effects of pressing mouse buttons
        // or moving the mouse.
        virtual void OnMouseMove( );
        virtual void OnLeftButtonDown( );
        virtual void OnLeftButtonUp( );
        virtual void OnMiddleButtonDown( );
        virtual void OnMiddleButtonUp( );
        virtual void OnRightButtonDown( );
        virtual void OnRightButtonUp( );
        virtual void OnMouseWheelForward( );
        virtual void OnMouseWheelBackward( );

        // Description:
        // Override the "fly-to" (f keypress) for images.
        virtual void OnChar( );

        // These methods for the different interactions in different modes
        // are overridden in subclasses to perform the correct motion. Since
        // they might be called from OnTimer, they do not have mouse coord
        // parameters (use interactor's GetEventPosition and
        // GetLastEventPosition)
        virtual void Rotate( );
        virtual void Pan( );
        virtual void Spin( );
        virtual void Zoom( );
        virtual void WindowLevel( );
        virtual void Pick( );
        virtual void Slice( );

        // Interaction mode entry points used internally.
        virtual void StartWindowLevel( );
        virtual void EndWindowLevel( );
        virtual void StartPick( );
        virtual void EndPick( );
        virtual void StartSlice( );
        virtual void EndSlice( );

      protected:
        ImageInteractorStyle( );
        virtual ~ImageInteractorStyle( );

        bool _PickPosition( double pos[ 3 ] );
        void _UpdateCursor( );

      private:
        // Purposely not implemented
        ImageInteractorStyle( const Self& );
        Self& operator=( const Self& );

      protected:
        Self::InteractionMode Mode;

        ImageSliceActors* m_SliceActors;
        MPRActors*        m_MPRActors;

        vtkSmartPointer< vtkOrientationMarkerWidget > OrientationWidget;
        vtkSmartPointer< vtkPropPicker > PropPicker;

      public:
        static const int SliceEvent;
      };

    } // ecapseman

  } // ecapseman

} // ecapseman

#endif // __CPPLUGINS__EXTENSIONS__VISUALIZATION__IMAGEINTERACTORSTYLE__H__

// eof - $RCSfile$