VTK
dox/Widgets/vtkCenteredSliderRepresentation.h
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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    vtkCenteredSliderRepresentation.h
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00015 
00016 /*-------------------------------------------------------------------------
00017   Copyright 2008 Sandia Corporation.
00018   Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00019   the U.S. Government retains certain rights in this software.
00020 -------------------------------------------------------------------------*/
00021 
00035 #ifndef __vtkCenteredSliderRepresentation_h
00036 #define __vtkCenteredSliderRepresentation_h
00037 
00038 #include "vtkSliderRepresentation.h"
00039 #include "vtkCoordinate.h" // For vtkViewportCoordinateMacro
00040 
00041 class vtkPoints;
00042 class vtkCellArray;
00043 class vtkPolyData;
00044 class vtkPolyDataMapper2D;
00045 class vtkActor2D;
00046 class vtkCoordinate;
00047 class vtkProperty2D;
00048 class vtkPropCollection;
00049 class vtkWindow;
00050 class vtkViewport;
00051 class vtkTransform;
00052 class vtkTransformPolyDataFilter;
00053 class vtkTextProperty;
00054 class vtkTextMapper;
00055 class vtkTextActor;
00056 
00057 
00058 class VTK_WIDGETS_EXPORT vtkCenteredSliderRepresentation : public vtkSliderRepresentation
00059 {
00060 public:
00062   static vtkCenteredSliderRepresentation *New();
00063 
00065 
00066   vtkTypeMacro(vtkCenteredSliderRepresentation,
00067                        vtkSliderRepresentation);
00068   void PrintSelf(ostream& os, vtkIndent indent);
00070 
00077   vtkCoordinate *GetPoint1Coordinate();
00078 
00085   vtkCoordinate *GetPoint2Coordinate();
00086 
00088 
00090   virtual void SetTitleText(const char*);
00091   virtual const char* GetTitleText();
00093 
00095 
00096   vtkGetObjectMacro(TubeProperty,vtkProperty2D);
00097   vtkGetObjectMacro(SliderProperty,vtkProperty2D);
00099   
00101 
00103   vtkGetObjectMacro(SelectedProperty,vtkProperty2D);
00105   
00107 
00108   vtkGetObjectMacro(LabelProperty,vtkTextProperty);
00110 
00112 
00115   virtual void PlaceWidget(double bounds[6]);
00116   virtual void BuildRepresentation();
00117   virtual void StartWidgetInteraction(double eventPos[2]);
00118   virtual int ComputeInteractionState(int X, int Y, int modify=0);
00119   virtual void WidgetInteraction(double eventPos[2]);
00120   virtual void Highlight(int);
00122 
00124 
00125   virtual void GetActors(vtkPropCollection*);
00126   virtual void ReleaseGraphicsResources(vtkWindow*);
00127   virtual int RenderOverlay(vtkViewport*);
00128   virtual int RenderOpaqueGeometry(vtkViewport*);
00130 
00131 protected:
00132   vtkCenteredSliderRepresentation();
00133   ~vtkCenteredSliderRepresentation();
00134 
00135   // Positioning the widget
00136   vtkCoordinate *Point1Coordinate;
00137   vtkCoordinate *Point2Coordinate;
00138 
00139   // Determine the parameter t along the slider
00140   virtual double ComputePickPosition(double x, double y);
00141 
00142   // Define the geometry. It is constructed in canaonical position
00143   // along the x-axis and then rotated into position.
00144   vtkTransform        *XForm;
00145   vtkPoints           *Points;
00146 
00147   vtkCellArray        *SliderCells;
00148   vtkPolyData         *Slider;
00149   vtkTransformPolyDataFilter *SliderXForm;
00150   vtkPolyDataMapper2D *SliderMapper;
00151   vtkActor2D          *SliderActor;
00152   vtkProperty2D       *SliderProperty;
00153   
00154   vtkCellArray        *TubeCells;
00155   vtkPolyData         *Tube;
00156   vtkTransformPolyDataFilter *TubeXForm;
00157   vtkPolyDataMapper2D *TubeMapper;
00158   vtkActor2D          *TubeActor;
00159   vtkProperty2D       *TubeProperty;
00160   
00161   vtkTextProperty     *LabelProperty;
00162   vtkTextActor        *LabelActor;
00163 
00164   vtkProperty2D       *SelectedProperty;
00165   int HighlightState;
00166 
00167   // build the tube geometry
00168   void BuildTube();
00169 
00170 private:
00171 
00172   // how many points along the tube
00173   int ArcCount;
00174   double ArcStart;
00175   double ArcEnd;
00176   double ButtonSize;
00177   double TubeSize;
00178 
00179   vtkCenteredSliderRepresentation
00180     (const vtkCenteredSliderRepresentation&); // Not implemented
00181   void operator=(const vtkCenteredSliderRepresentation&);  //Not implemented
00182 };
00183 
00184 #endif