vtkResliceCursorWidget.h

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

  Program:   Visualization Toolkit
  Module:    vtkResliceCursorWidget.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 vtkResliceCursorWidget_h
#define vtkResliceCursorWidget_h

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

class vtkResliceCursorRepresentation;

class VTKINTERACTIONWIDGETS_EXPORT vtkResliceCursorWidget : public vtkAbstractWidget
{
public:

  static vtkResliceCursorWidget *New();


  vtkTypeMacro(vtkResliceCursorWidget,vtkAbstractWidget);
  void PrintSelf(ostream& os, vtkIndent indent);

  void SetRepresentation(vtkResliceCursorRepresentation *r)
    {this->Superclass::SetWidgetRepresentation(
        reinterpret_cast<vtkWidgetRepresentation*>(r));}

  vtkResliceCursorRepresentation *GetResliceCursorRepresentation()
    {return reinterpret_cast<vtkResliceCursorRepresentation*>(this->WidgetRep);}

  void CreateDefaultRepresentation();

  virtual void SetEnabled(int);


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

  enum
  {
    WindowLevelEvent = 1055,
    ResliceAxesChangedEvent,
    ResliceThicknessChangedEvent,
    ResetCursorEvent
  };

  virtual void ResetResliceCursor();

protected:
  vtkResliceCursorWidget();
  ~vtkResliceCursorWidget();

  // These are the callbacks for this widget
  static void SelectAction(vtkAbstractWidget*);
  static void RotateAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);
  static void ResizeThicknessAction(vtkAbstractWidget*);
  static void EndResizeThicknessAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
  static void ResetResliceCursorAction(vtkAbstractWidget*);

  // helper methods for cursor management
  void SetCursor(int state);

  // Start Window Level
  void StartWindowLevel();

  // Invoke the appropriate event based on state
  void InvokeAnEvent();

  // Manage the state of the widget
  int WidgetState;
  enum _WidgetState
  {
    Start=0,
    Active
  };

  // Keep track whether key modifier key is pressed
  int ModifierActive;
  int ManageWindowLevel;

private:
  vtkResliceCursorWidget(const vtkResliceCursorWidget&) VTK_DELETE_FUNCTION;
  void operator=(const vtkResliceCursorWidget&) VTK_DELETE_FUNCTION;
};

#endif