vtkCornerAnnotation.h

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

  Program:   Visualization Toolkit
  Module:    vtkCornerAnnotation.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 vtkCornerAnnotation_h
#define vtkCornerAnnotation_h

#include "vtkRenderingAnnotationModule.h" // For export macro
#include "vtkActor2D.h"

class vtkTextMapper;
class vtkImageMapToWindowLevelColors;
class vtkImageActor;
class vtkTextProperty;

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

  static vtkCornerAnnotation *New();


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

  virtual int HasTranslucentPolygonalGeometry();


  vtkSetMacro(MaximumLineHeight,double);
  vtkGetMacro(MaximumLineHeight,double);


  vtkSetMacro(MinimumFontSize,int);
  vtkGetMacro(MinimumFontSize,int);
  vtkSetMacro(MaximumFontSize,int);
  vtkGetMacro(MaximumFontSize,int);


  vtkSetMacro( LinearFontScaleFactor, double );
  vtkGetMacro( LinearFontScaleFactor, double );
  vtkSetMacro( NonlinearFontScaleFactor, double );
  vtkGetMacro( NonlinearFontScaleFactor, double );

  virtual void ReleaseGraphicsResources(vtkWindow *);


  enum TextPosition
    {
    LowerLeft = 0, 
    LowerRight,    
    UpperLeft,     
    UpperRight,    
    LowerEdge,     
    RightEdge,     
    LeftEdge,      
    UpperEdge      
    };
  static const int NumTextPositions = 8;


  void SetText(int i, const char *text);
  const char* GetText(int i);
  void ClearAllTexts();
  void CopyAllTextsFrom(vtkCornerAnnotation *ca);


  void SetImageActor(vtkImageActor*);
  vtkGetObjectMacro(ImageActor,vtkImageActor);


  void SetWindowLevel(vtkImageMapToWindowLevelColors*);
  vtkGetObjectMacro(WindowLevel,vtkImageMapToWindowLevelColors);


  vtkSetMacro(LevelShift, double);
  vtkGetMacro(LevelShift, double);


  vtkSetMacro(LevelScale, double);
  vtkGetMacro(LevelScale, double);


  virtual void SetTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(TextProperty,vtkTextProperty);


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

protected:
  vtkCornerAnnotation();
  ~vtkCornerAnnotation();

  double MaximumLineHeight;

  vtkTextProperty *TextProperty;

  vtkImageMapToWindowLevelColors *WindowLevel;
  double LevelShift;
  double LevelScale;
  vtkImageActor *ImageActor;
  vtkImageActor *LastImageActor;

  char *CornerText[NumTextPositions];

  int FontSize;
  vtkActor2D    *TextActor[NumTextPositions];
  vtkTimeStamp   BuildTime;
  int            LastSize[2];
  vtkTextMapper *TextMapper[NumTextPositions];

  int MinimumFontSize;
  int MaximumFontSize;

  double LinearFontScaleFactor;
  double NonlinearFontScaleFactor;

  int ShowSliceAndImage;


  virtual void TextReplace(
    vtkImageActor *ia, vtkImageMapToWindowLevelColors *wl);


  virtual void SetTextActorsPosition(int vsize[2]);
  virtual void SetTextActorsJustification();

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


#endif