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dox/Rendering/vtkTextMapper.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkTextMapper.h,v $
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 =========================================================================*/
00031 #ifndef __vtkTextMapper_h
00032 #define __vtkTextMapper_h
00033 
00034 #include "vtkMapper2D.h"
00035 
00036 class vtkActor2D;
00037 class vtkTextProperty;
00038 class vtkViewport;
00039 
00040 class VTK_RENDERING_EXPORT vtkTextMapper : public vtkMapper2D
00041 {
00042 public:
00043   vtkTypeRevisionMacro(vtkTextMapper,vtkMapper2D);
00044   void PrintSelf(ostream& os, vtkIndent indent);
00045 
00047   static vtkTextMapper *New();
00048 
00050 
00052   virtual void GetSize(vtkViewport*, int size[2]) {size[0]=size[0];}
00053   virtual int GetWidth(vtkViewport*v);
00054   virtual int GetHeight(vtkViewport*v);
00056   
00058 
00060   virtual void SetInput(const char *inputString);
00061   vtkGetStringMacro(Input);
00063 
00065 
00066   virtual void SetTextProperty(vtkTextProperty *p);
00067   vtkGetObjectMacro(TextProperty,vtkTextProperty);
00069   
00071   void ShallowCopy(vtkTextMapper *tm);
00072   
00075   int  GetNumberOfLines(const char *input);
00076 
00078 
00081   vtkGetMacro(NumberOfLines,int);
00083   
00085 
00089   virtual int SetConstrainedFontSize(vtkViewport*, int targetWidth, int targetHeight);
00090   static int SetConstrainedFontSize(vtkTextMapper*, vtkViewport*, int targetWidth, int targetHeight);
00092 
00094 
00098   static int SetMultipleConstrainedFontSize(vtkViewport*, 
00099                                             int targetWidth, int targetHeight,
00100                                             vtkTextMapper** mappers, 
00101                                             int nbOfMappers, 
00102                                             int* maxResultingSize);
00104 
00106 
00109   static int SetRelativeFontSize(vtkTextMapper*, vtkViewport*, int *winSize, 
00110                                  int *stringSize, float sizeFactor=0.0);
00111   static int SetMultipleRelativeFontSize(vtkViewport *viewport, 
00112                                          vtkTextMapper **textMappers, 
00113                                          int nbOfMappers, int *winSize, 
00114                                          int *stringSize, float sizeFactor);
00116 
00118 
00119   virtual int GetSystemFontSize(int size) 
00120     { return size; }
00122 
00123 protected:
00124   vtkTextMapper();
00125   ~vtkTextMapper();
00126 
00127   char* Input;
00128   vtkTextProperty *TextProperty;
00129 
00130   int  LineSize;
00131   int  NumberOfLines;
00132   int  NumberOfLinesAllocated;
00133 
00134   vtkTextMapper **TextLines;
00135 
00136   // These functions are used to parse, process, and render multiple lines 
00137   char *NextLine(const char *input, int lineNum);
00138   void GetMultiLineSize(vtkViewport* viewport, int size[2]);
00139   void RenderOverlayMultipleLines(vtkViewport *viewport, vtkActor2D *actor);
00140   
00141 private:
00142   vtkTextMapper(const vtkTextMapper&);  // Not implemented.
00143   void operator=(const vtkTextMapper&);  // Not implemented.
00144 };
00145 
00146 #endif
00147 

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