vtkLegendBoxActor.h

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

  Program:   Visualization Toolkit
  Module:    vtkLegendBoxActor.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 vtkLegendBoxActor_h
#define vtkLegendBoxActor_h

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

class vtkActor;
class vtkDoubleArray;
class vtkImageData;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkPolyDataMapper;
class vtkPlaneSource;
class vtkTextMapper;
class vtkTextProperty;
class vtkTexturedActor2D;
class vtkTransform;
class vtkTransformPolyDataFilter;
class vtkProperty2D;

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

  static vtkLegendBoxActor *New();

  void SetNumberOfEntries(int num);
  int GetNumberOfEntries()
    {return this->NumberOfEntries;}


  void SetEntry(int i, vtkPolyData *symbol, const char* string, double color[3]);
  void SetEntry(int i, vtkImageData *symbol, const char* string, double color[3]);
  void SetEntry(int i, vtkPolyData *symbol, vtkImageData *icon,
                const char* string, double color[3]);

  void SetEntrySymbol (int i, vtkPolyData *symbol);
  void SetEntryIcon   (int i, vtkImageData *icon);
  void SetEntryString (int i, const char* string);
  void SetEntryColor  (int i, double color[3]);
  void SetEntryColor  (int i, double r, double g, double b);

  vtkPolyData*  GetEntrySymbol(int i);
  vtkImageData* GetEntryIcon(int i);
  const char*   GetEntryString(int i);
  double*       GetEntryColor(int i);


  virtual void SetEntryTextProperty(vtkTextProperty *p);
  vtkGetObjectMacro(EntryTextProperty,vtkTextProperty);


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


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


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

  vtkProperty2D* GetBoxProperty() { return this->BoxActor->GetProperty(); };


  vtkSetClampMacro(Padding, int, 0, 50);
  vtkGetMacro(Padding, int);


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


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


  vtkSetVector3Macro(BackgroundColor, double);
  vtkGetVector3Macro(BackgroundColor, double);


  vtkSetClampMacro(BackgroundOpacity, double, 0.0, 1.0);
  vtkGetMacro(BackgroundOpacity, double);

  void ShallowCopy(vtkProp *prop);

  virtual void ReleaseGraphicsResources(vtkWindow *);


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

  virtual int HasTranslucentPolygonalGeometry();

protected:
  vtkLegendBoxActor();
  ~vtkLegendBoxActor();

  void InitializeEntries();

  vtkPolyData createTexturedPlane();

  int   Border;
  int   Box;
  int   Padding;
  int   LockBorder;
  int   ScalarVisibility;
  double BoxOpacity;

  // Internal actors, mappers, data to represent the legend
  int                        NumberOfEntries;
  int                        Size; //allocation size
  vtkDoubleArray              *Colors;
  vtkTextMapper              **TextMapper;
  vtkActor2D                 **TextActor;

  vtkPolyData                **Symbol;
  vtkTransform               **Transform;
  vtkTransformPolyDataFilter **SymbolTransform;
  vtkPolyDataMapper2D        **SymbolMapper;
  vtkActor2D                 **SymbolActor;

  vtkPlaneSource             **Icon;
  vtkTransform               **IconTransform;
  vtkTransformPolyDataFilter **IconTransformFilter;
  vtkPolyDataMapper2D        **IconMapper;
  vtkTexturedActor2D         **IconActor;
  vtkImageData               **IconImage;

  vtkPolyData                *BorderPolyData;
  vtkPolyDataMapper2D        *BorderMapper;
  vtkActor2D                 *BorderActor;
  vtkPolyData                *BoxPolyData;
  vtkPolyDataMapper2D        *BoxMapper;
  vtkActor2D                 *BoxActor;
  vtkTextProperty            *EntryTextProperty;

  // Background plane.
  int                         UseBackground;
  double                      BackgroundOpacity;
  double                      BackgroundColor[3];
  vtkPlaneSource             *Background;

  // May use texture.
  vtkTexturedActor2D         *BackgroundActor;
  vtkPolyDataMapper2D        *BackgroundMapper;

  // Used to control whether the stuff is recomputed
  int           LegendEntriesVisible;
  int           CachedSize[2];
  vtkTimeStamp  BuildTime;

private:
  vtkLegendBoxActor(const vtkLegendBoxActor&) VTK_DELETE_FUNCTION;
  void operator=(const vtkLegendBoxActor&) VTK_DELETE_FUNCTION;
};


#endif