vtkTextActor.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkTextActor.h,v $

  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 __vtkTextActor_h
#define __vtkTextActor_h

#include "vtkActor2D.h"

// We need to include vtkTextMapper here otherwise we have an ambiguous
// case of vtkMapper2D or vtkTextMapper in SetMapper(vtkTextMapper *mapper);
// - two members with identical prototypes!
class vtkTextProperty;
class vtkTextMapper;

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

  static vtkTextActor *New();

  void ShallowCopy(vtkProp *prop);

  void SetMapper(vtkTextMapper *mapper);


  void SetInput(const char *inputString);
  char *GetInput();


  vtkSetVector2Macro(MinimumSize,int);
  vtkGetVector2Macro(MinimumSize,int);


  vtkSetMacro(MaximumLineHeight,float);
  vtkGetMacro(MaximumLineHeight,float);


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


  vtkSetClampMacro(AlignmentPoint,int,0,8)
  vtkGetMacro(AlignmentPoint,int);


  vtkCoordinate *GetActualPositionCoordinate(void)
    { return this->AdjustedPositionCoordinate; }


  virtual void SetTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(TextProperty,vtkTextProperty);
  
  virtual void SetNonLinearFontScale(double exponent, int target);

//BTX
  virtual void ReleaseGraphicsResources(vtkWindow *);


  int RenderOpaqueGeometry(vtkViewport* viewport);
  int RenderTranslucentGeometry(vtkViewport* ) {return 0;};
  int RenderOverlay(vtkViewport* viewport);
//ETX

protected:
  void SetMapper(vtkMapper2D *mapper);

   vtkTextActor();
  ~vtkTextActor();

  int   MinimumSize[2];
  float MaximumLineHeight;
  double FontScaleExponent;
  double FontScaleTarget;
  int   ScaledText;
  int   AlignmentPoint;

  vtkCoordinate *AdjustedPositionCoordinate;
  vtkTextProperty *TextProperty;

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

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


#endif

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