vtkCenteredSliderWidget.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkCenteredSliderWidget_h
#define vtkCenteredSliderWidget_h
 
#include "vtkAbstractWidget.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWrappingHints.h"            // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkSliderRepresentation;
 
class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO 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 = default;
 
  // 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 WidgetStateType
  {
    Start = 0,
    Sliding
  };
 
  int TimerId;
  int TimerDuration;
  double StartTime;
  double Value;
 
private:
  vtkCenteredSliderWidget(const vtkCenteredSliderWidget&) = delete;
  void operator=(const vtkCenteredSliderWidget&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif