vtkCenteredSliderWidget.h

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

  Program:   Visualization Toolkit
  Module:    vtkCenteredSliderWidget.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 vtkCenteredSliderWidget_h
#define vtkCenteredSliderWidget_h

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

class vtkSliderRepresentation;


class VTKINTERACTIONWIDGETS_EXPORT vtkCenteredSliderWidget : public vtkAbstractWidget
{
public:
  static vtkCenteredSliderWidget *New();


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

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

  vtkSliderRepresentation *GetSliderRepresentation()
    {return reinterpret_cast<vtkSliderRepresentation*>(this->WidgetRep);}

  void CreateDefaultRepresentation() override;

  double GetValue() { return this->Value; };

protected:
  vtkCenteredSliderWidget();
  ~vtkCenteredSliderWidget() override {}

  // These are the events that are handled
  static void SelectAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
  static void TimerAction(vtkAbstractWidget*);

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

  int TimerId;
  int TimerDuration;
  double StartTime;
  double Value;

private:
  vtkCenteredSliderWidget(const vtkCenteredSliderWidget&) = delete;
  void operator=(const vtkCenteredSliderWidget&) = delete;
};

#endif