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121 lines
3.9 KiB
121 lines
3.9 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkTextMapper.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkTextMapper - 2D text annotation
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// .SECTION Description
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// vtkTextMapper provides 2D text annotation support for vtk. It is a
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// vtkMapper2D that can be associated with a vtkActor2D and placed into a
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// vtkRenderer.
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//
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// To use vtkTextMapper, specify an input text string.
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// .SECTION See Also
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// vtkMapper2D vtkActor2D vtkLegendBoxActor vtkCaptionActor2D vtkVectorText vtkTextProperty
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#ifndef __vtkTextMapper_h
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#define __vtkTextMapper_h
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#include "vtkMapper2D.h"
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class vtkActor2D;
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class vtkTextProperty;
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class vtkViewport;
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class VTK_RENDERING_EXPORT vtkTextMapper : public vtkMapper2D
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{
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public:
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vtkTypeRevisionMacro(vtkTextMapper,vtkMapper2D);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Creates a new text mapper.
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static vtkTextMapper *New();
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// Description:
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// Return the size[2]/width/height of the rectangle required to draw this
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// mapper (in pixels).
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virtual void GetSize(vtkViewport*, int size[2]) {size[0]=size[0];};
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virtual int GetWidth(vtkViewport*v);
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virtual int GetHeight(vtkViewport*v);
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// Description:
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// Set the input text string to the mapper. The mapper recognizes "\n"
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// as a carriage return/linefeed (line separator).
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virtual void SetInput(const char *inputString);
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vtkGetStringMacro(Input);
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// Description:
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// Set/Get the text property.
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virtual void SetTextProperty(vtkTextProperty *p);
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vtkGetObjectMacro(TextProperty,vtkTextProperty);
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vtkGetMacro(NumberOfLines,int);
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// Description:
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// Shallow copy of an actor.
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void ShallowCopy(vtkTextMapper *tm);
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// Description:
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// Determine the number of lines in the Input string (delimited by "\n").
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int GetNumberOfLines(const char *input);
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// Description:
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// Set and return the font size required to make this mapper fit in a given
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// target rectangle (width * height, in pixels).
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virtual int SetConstrainedFontSize(vtkViewport*,
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int targetWidth, int targetHeight);
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// Description:
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// Set and return the font size required to make each element of an array of
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// mappers fit in a given rectangle (width * height, in pixels).
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// This font size is the smallest size that was required to fit the largest
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// mapper in this constraint.
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// The resulting maximum area of the mappers is also returned.
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static int SetMultipleConstrainedFontSize(vtkViewport*,
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int targetWidth, int targetHeight,
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vtkTextMapper** mappers,
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int nbOfMappers,
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int* maxResultingSize);
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// Description:
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// Get the available system font size matching a font size.
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virtual int GetSystemFontSize(int size)
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{ return size; };
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protected:
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vtkTextMapper();
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~vtkTextMapper();
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char* Input;
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vtkTextProperty *TextProperty;
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int LineSize;
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int NumberOfLines;
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int NumberOfLinesAllocated;
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vtkTextMapper **TextLines;
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// These functions are used to parse, process, and render multiple lines
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char *NextLine(const char *input, int lineNum);
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void GetMultiLineSize(vtkViewport* viewport, int size[2]);
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void RenderOverlayMultipleLines(vtkViewport *viewport, vtkActor2D *actor);
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private:
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vtkTextMapper(const vtkTextMapper&); // Not implemented.
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void operator=(const vtkTextMapper&); // Not implemented.
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};
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#endif
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