---

Rendering/vtkInteractorStyle.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkInteractorStyle.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkInteractorStyle_h
#define __vtkInteractorStyle_h

#include "vtkInteractorObserver.h"

// Motion flags

#define VTKIS_START        0
#define VTKIS_NONE         0

#define VTKIS_ROTATE       1
#define VTKIS_PAN          2
#define VTKIS_SPIN         3
#define VTKIS_DOLLY        4
#define VTKIS_ZOOM         5
#define VTKIS_USCALE       6
#define VTKIS_TIMER        7
#define VTKIS_FORWARDFLY   8
#define VTKIS_REVERSEFLY   9

#define VTKIS_ANIM_OFF 0
#define VTKIS_ANIM_ON  1

class vtkActor2D;
class vtkActor;
class vtkCallbackCommand;
class vtkOutlineSource;
class vtkPolyDataMapper;
class vtkProp3D;
class vtkProp;

class VTK_RENDERING_EXPORT vtkInteractorStyle : public vtkInteractorObserver
{
public:
  static vtkInteractorStyle *New();

  vtkTypeRevisionMacro(vtkInteractorStyle,vtkInteractorObserver);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void SetInteractor(vtkRenderWindowInteractor *interactor);

  virtual void SetEnabled(int);


  vtkSetClampMacro(AutoAdjustCameraClippingRange, int, 0, 1 );
  vtkGetMacro(AutoAdjustCameraClippingRange, int );
  vtkBooleanMacro(AutoAdjustCameraClippingRange, int );
  
  void FindPokedRenderer(int,int);


  vtkGetMacro(State,int);


  vtkGetMacro(UseTimers,int);
  vtkSetMacro(UseTimers,int);
  vtkBooleanMacro(UseTimers,int);


  vtkSetMacro(HandleObservers,int);
  vtkGetMacro(HandleObservers,int);
  vtkBooleanMacro(HandleObservers,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();
  virtual void OnKeyDown() {};
  virtual void OnKeyUp() {};
  virtual void OnKeyPress() {};
  virtual void OnKeyRelease() {};


  virtual void OnExpose() {};
  virtual void OnConfigure() {};
  virtual void OnEnter() {};
  virtual void OnLeave() {};

  virtual void OnTimer();


  virtual void Rotate() {};
  virtual void Spin() {};
  virtual void Pan() {};
  virtual void Dolly() {};
  virtual void Zoom() {};
  virtual void UniformScale() {};


  virtual void StartState(int newstate);
  virtual void StopState();


  virtual void StartAnimate();  
  virtual void StopAnimate();  
  virtual void StartRotate();
  virtual void EndRotate();
  virtual void StartZoom();
  virtual void EndZoom();
  virtual void StartPan();
  virtual void EndPan();
  virtual void StartSpin();
  virtual void EndSpin();
  virtual void StartDolly();
  virtual void EndDolly();
  virtual void StartUniformScale();
  virtual void EndUniformScale();
  virtual void StartTimer();
  virtual void EndTimer();

#ifndef VTK_REMOVE_LEGACY_CODE


  void SetLeftButtonPressMethod(void (*f)(void *), void *arg);
  void SetLeftButtonPressMethodArgDelete(void (*f)(void *));
  void SetLeftButtonReleaseMethod(void (*f)(void *), void *arg);
  void SetLeftButtonReleaseMethodArgDelete(void (*f)(void *));
  void SetMiddleButtonPressMethod(void (*f)(void *), void *arg);
  void SetMiddleButtonPressMethodArgDelete(void (*f)(void *));
  void SetMiddleButtonReleaseMethod(void (*f)(void *), void *arg);
  void SetMiddleButtonReleaseMethodArgDelete(void (*f)(void *));
  void SetRightButtonPressMethod(void (*f)(void *), void *arg);
  void SetRightButtonPressMethodArgDelete(void (*f)(void *));
  void SetRightButtonReleaseMethod(void (*f)(void *), void *arg);
  void SetRightButtonReleaseMethodArgDelete(void (*f)(void *));
#endif


  virtual void HighlightProp(vtkProp *prop);
  virtual void HighlightActor2D(vtkActor2D *actor2D);
  virtual void HighlightProp3D(vtkProp3D *prop3D);


  vtkSetVector3Macro(PickColor,float);
  vtkGetVectorMacro(PickColor, float, 3);

protected:
  vtkInteractorStyle();
  ~vtkInteractorStyle();
  

  static void ProcessEvents(vtkObject* object, 
                            unsigned long event,
                            void* clientdata, 
                            void* calldata);
  
  // Keep track of current state

  int State;  
  int AnimState;  

  // Should observers be handled here, should we fire timers

  int HandleObservers; 
  int UseTimers;       

  int AutoAdjustCameraClippingRange;

  // For picking and highlighting props

  vtkOutlineSource   *Outline;
  vtkPolyDataMapper  *OutlineMapper;
  vtkActor           *OutlineActor;
  vtkRenderer        *PickedRenderer;
  vtkProp            *CurrentProp;
  vtkActor2D         *PickedActor2D;
  int                PropPicked;      // bool: prop picked?
  float              PickColor[3];    // support 2D picking

  // These should be removed when the Set*Method methods that are
  // deprecated above are removed.  We don't want these inside the
  // check for VTK_REMOVE_LEGACY_CODE because it will change the size
  // of the object.
  unsigned long LeftButtonPressTag;
  unsigned long LeftButtonReleaseTag;
  unsigned long MiddleButtonPressTag;
  unsigned long MiddleButtonReleaseTag;
  unsigned long RightButtonPressTag;
  unsigned long RightButtonReleaseTag;

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

#endif

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