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

  Program:   Visualization Toolkit
  Module:    vtkInteractorStyleImage.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 vtkInteractorStyleImage_h
#define vtkInteractorStyleImage_h

#include "vtkInteractionStyleModule.h" // For export macro
#include "vtkInteractorStyleTrackballCamera.h"

// Motion flags

#define VTKIS_WINDOW_LEVEL 1024
#define VTKIS_PICK         1025
#define VTKIS_SLICE        1026

// Style flags

#define VTKIS_IMAGE2D 2
#define VTKIS_IMAGE3D 3
#define VTKIS_IMAGE_SLICING 4

class vtkImageProperty;

class VTKINTERACTIONSTYLE_EXPORT vtkInteractorStyleImage : public vtkInteractorStyleTrackballCamera
{
public:
  static vtkInteractorStyleImage *New();
  vtkTypeMacro(vtkInteractorStyleImage, vtkInteractorStyleTrackballCamera);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkGetVector2Macro(WindowLevelStartPosition,int);
  vtkGetVector2Macro(WindowLevelCurrentPosition,int);


  virtual void OnMouseMove();
  virtual void OnLeftButtonDown();
  virtual void OnLeftButtonUp();
  virtual void OnMiddleButtonDown();
  virtual void OnMiddleButtonUp();
  virtual void OnRightButtonDown();
  virtual void OnRightButtonUp();

  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 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();


  vtkSetClampMacro(InteractionMode, int, VTKIS_IMAGE2D, VTKIS_IMAGE_SLICING);
  vtkGetMacro(InteractionMode, int);
  void SetInteractionModeToImage2D() {
    this->SetInteractionMode(VTKIS_IMAGE2D); }
  void SetInteractionModeToImage3D() {
    this->SetInteractionMode(VTKIS_IMAGE3D); }
  void SetInteractionModeToImageSlicing() {
    this->SetInteractionMode(VTKIS_IMAGE_SLICING); }


  vtkSetVector3Macro(XViewRightVector, double);
  vtkGetVector3Macro(XViewRightVector, double);
  vtkSetVector3Macro(XViewUpVector, double);
  vtkGetVector3Macro(XViewUpVector, double);
  vtkSetVector3Macro(YViewRightVector, double);
  vtkGetVector3Macro(YViewRightVector, double);
  vtkSetVector3Macro(YViewUpVector, double);
  vtkGetVector3Macro(YViewUpVector, double);
  vtkSetVector3Macro(ZViewRightVector, double);
  vtkGetVector3Macro(ZViewRightVector, double);
  vtkSetVector3Macro(ZViewUpVector, double);
  vtkGetVector3Macro(ZViewUpVector, double);


  void SetImageOrientation(const double leftToRight[3],
                           const double bottomToTop[3]);


  vtkImageProperty *GetCurrentImageProperty() {
    return this->CurrentImageProperty; }

protected:
  vtkInteractorStyleImage();
  ~vtkInteractorStyleImage();

  void SetCurrentImageToNthImage(int i);

  int WindowLevelStartPosition[2];
  int WindowLevelCurrentPosition[2];
  double WindowLevelInitial[2];
  vtkImageProperty *CurrentImageProperty;

  int InteractionMode;
  double XViewRightVector[3];
  double XViewUpVector[3];
  double YViewRightVector[3];
  double YViewUpVector[3];
  double ZViewRightVector[3];
  double ZViewUpVector[3];

private:
  vtkInteractorStyleImage(const vtkInteractorStyleImage&);  // Not implemented.
  void operator=(const vtkInteractorStyleImage&);  // Not implemented.
};

#endif