vtkCenteredSliderRepresentation.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkCenteredSliderRepresentation.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.
 
=========================================================================*/
 
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
 
#ifndef vtkCenteredSliderRepresentation_h
#define vtkCenteredSliderRepresentation_h
 
#include "vtkCoordinate.h"               // For vtkViewportCoordinateMacro
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkSliderRepresentation.h"
 
class vtkPoints;
class vtkCellArray;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkActor2D;
class vtkCoordinate;
class vtkProperty2D;
class vtkPropCollection;
class vtkWindow;
class vtkViewport;
class vtkTransform;
class vtkTransformPolyDataFilter;
class vtkTextProperty;
class vtkTextMapper;
class vtkTextActor;
 
class VTKINTERACTIONWIDGETS_EXPORT 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*) override;
  void ReleaseGraphicsResources(vtkWindow*) 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;
  vtkTransformPolyDataFilter* SliderXForm;
  vtkPolyDataMapper2D* SliderMapper;
  vtkActor2D* SliderActor;
  vtkProperty2D* SliderProperty;
 
  vtkCellArray* TubeCells;
  vtkPolyData* Tube;
  vtkTransformPolyDataFilter* 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;
};
 
#endif