vtkCenteredSliderRepresentation.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov

#ifndef vtkCenteredSliderRepresentation_h
#define vtkCenteredSliderRepresentation_h

#include "vtkCoordinate.h"               // For vtkViewportCoordinateMacro
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkSliderRepresentation.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkPoints;
class vtkCellArray;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkActor2D;
class vtkCoordinate;
class vtkProperty2D;
class vtkPropCollection;
class vtkWindow;
class vtkViewport;
class vtkTransform;
class vtkTransformFilter;
class vtkTextProperty;
class vtkTextMapper;
class vtkTextActor;

class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkCenteredSliderRepresentation
  : public vtkSliderRepresentation
{
public:
  static vtkCenteredSliderRepresentation* New();


  vtkTypeMacro(vtkCenteredSliderRepresentation, vtkSliderRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  vtkCoordinate* GetPoint1Coordinate();

  vtkCoordinate* GetPoint2Coordinate();


  void SetTitleText(const char*) override;
  const char* GetTitleText() override;


  vtkGetObjectMacro(TubeProperty, vtkProperty2D);
  vtkGetObjectMacro(SliderProperty, vtkProperty2D);


  vtkGetObjectMacro(SelectedProperty, vtkProperty2D);


  vtkGetObjectMacro(LabelProperty, vtkTextProperty);


  void PlaceWidget(double bounds[6]) override;
  void BuildRepresentation() override;
  void StartWidgetInteraction(double eventPos[2]) override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
  void WidgetInteraction(double eventPos[2]) override;
  void Highlight(int) override;


  void GetActors(vtkPropCollection* propCollections) override;
  void ReleaseGraphicsResources(vtkWindow* window) override;
  int RenderOverlay(vtkViewport*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;

protected:
  vtkCenteredSliderRepresentation();
  ~vtkCenteredSliderRepresentation() override;

  // Positioning the widget
  vtkCoordinate* Point1Coordinate;
  vtkCoordinate* Point2Coordinate;

  // Determine the parameter t along the slider
  virtual double ComputePickPosition(double x, double y);

  // Define the geometry. It is constructed in canaonical position
  // along the x-axis and then rotated into position.
  vtkTransform* XForm;
  vtkPoints* Points;

  vtkCellArray* SliderCells;
  vtkPolyData* Slider;
  vtkTransformFilter* SliderXForm;
  vtkPolyDataMapper2D* SliderMapper;
  vtkActor2D* SliderActor;
  vtkProperty2D* SliderProperty;

  vtkCellArray* TubeCells;
  vtkPolyData* Tube;
  vtkTransformFilter* TubeXForm;
  vtkPolyDataMapper2D* TubeMapper;
  vtkActor2D* TubeActor;
  vtkProperty2D* TubeProperty;

  vtkTextProperty* LabelProperty;
  vtkTextActor* LabelActor;

  vtkProperty2D* SelectedProperty;
  int HighlightState;

  // build the tube geometry
  void BuildTube();

private:
  // how many points along the tube
  int ArcCount;
  double ArcStart;
  double ArcEnd;
  double ButtonSize;
  double TubeSize;

  vtkCenteredSliderRepresentation(const vtkCenteredSliderRepresentation&) = delete;
  void operator=(const vtkCenteredSliderRepresentation&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif