dox/Rendering/vtkScalarBarActor.h

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

  Program:   Visualization Toolkit
  Module:    vtkScalarBarActor.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 __vtkScalarBarActor_h
#define __vtkScalarBarActor_h

#include "vtkActor2D.h"

class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkScalarsToColors;
class vtkTextMapper;
class vtkTextProperty;
class vtkTexture;

#define VTK_ORIENT_HORIZONTAL 0
#define VTK_ORIENT_VERTICAL 1

class VTK_RENDERING_EXPORT vtkScalarBarActor : public vtkActor2D
{
public:
  vtkTypeMacro(vtkScalarBarActor,vtkActor2D);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkScalarBarActor *New();


  int RenderOpaqueGeometry(vtkViewport* viewport);
  virtual int RenderTranslucentPolygonalGeometry(vtkViewport*) { return 0; };
  int RenderOverlay(vtkViewport* viewport);

  virtual int HasTranslucentPolygonalGeometry();
  
  virtual void ReleaseGraphicsResources(vtkWindow *);


  virtual void SetLookupTable(vtkScalarsToColors*);
  vtkGetObjectMacro(LookupTable,vtkScalarsToColors);


  vtkSetMacro( UseOpacity, int );
  vtkGetMacro( UseOpacity, int );
  vtkBooleanMacro( UseOpacity, int );


  vtkSetClampMacro(MaximumNumberOfColors, int, 2, VTK_LARGE_INTEGER);
  vtkGetMacro(MaximumNumberOfColors, int);
  

  vtkSetClampMacro(NumberOfLabels, int, 0, 64);
  vtkGetMacro(NumberOfLabels, int);
  

  vtkSetClampMacro(Orientation,int,VTK_ORIENT_HORIZONTAL, VTK_ORIENT_VERTICAL);
  vtkGetMacro(Orientation, int);
  void SetOrientationToHorizontal()
       {this->SetOrientation(VTK_ORIENT_HORIZONTAL);};
  void SetOrientationToVertical() {this->SetOrientation(VTK_ORIENT_VERTICAL);};


  virtual void SetTitleTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(TitleTextProperty,vtkTextProperty);
  

  virtual void SetLabelTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(LabelTextProperty,vtkTextProperty);
    

  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);


  vtkSetStringMacro(Title);
  vtkGetStringMacro(Title);

  void ShallowCopy(vtkProp *prop);


  vtkSetMacro( TextureGridWidth, double );
  vtkGetMacro( TextureGridWidth, double );


  vtkGetObjectMacro( TextureActor, vtkActor2D );

//BTX
  enum { PrecedeScalarBar = 0, SucceedScalarBar };
//ETX


  vtkSetClampMacro( TextPosition, int, PrecedeScalarBar, SucceedScalarBar);
  vtkGetMacro( TextPosition, int );
  virtual void SetTextPositionToPrecedeScalarBar()
    { this->SetTextPosition( vtkScalarBarActor::PrecedeScalarBar ); }
  virtual void SetTextPositionToSucceedScalarBar()
    { this->SetTextPosition( vtkScalarBarActor::SucceedScalarBar ); }


  vtkSetMacro( MaximumWidthInPixels, int );
  vtkGetMacro( MaximumWidthInPixels, int );
  vtkSetMacro( MaximumHeightInPixels, int );
  vtkGetMacro( MaximumHeightInPixels, int );

protected:
  vtkScalarBarActor();
  ~vtkScalarBarActor();

  vtkScalarsToColors *LookupTable;
  vtkTextProperty *TitleTextProperty;
  vtkTextProperty *LabelTextProperty;

  int   MaximumNumberOfColors;
  int   NumberOfLabels;
  int   NumberOfLabelsBuilt;
  int   Orientation;
  char  *Title;
  char  *LabelFormat;
  int   UseOpacity; // off by default
  double TextureGridWidth;
  int TextPosition;

  vtkTextMapper **TextMappers;
  vtkActor2D    **TextActors;
  virtual void AllocateAndSizeLabels(int *labelSize, int *size,
                                     vtkViewport *viewport, double *range);

  vtkTextMapper *TitleMapper;
  vtkActor2D    *TitleActor;
  virtual void SizeTitle(int *titleSize, int *size, vtkViewport *viewport);

  vtkPolyData         *ScalarBar;
  vtkPolyDataMapper2D *ScalarBarMapper;
  vtkActor2D          *ScalarBarActor;

  vtkPolyData         *TexturePolyData;
  vtkTexture          *Texture;
  vtkActor2D          *TextureActor;

  vtkTimeStamp  BuildTime;
  int LastSize[2];
  int LastOrigin[2];

  int MaximumWidthInPixels;
  int MaximumHeightInPixels;

private:
  vtkScalarBarActor(const vtkScalarBarActor&);  // Not implemented.
  void operator=(const vtkScalarBarActor&);  // Not implemented.
};


#endif

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