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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkTextMapper.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.
=========================================================================*/
// .NAME vtkTextMapper - 2D text annotation
// .SECTION Description
// vtkTextMapper provides 2D text annotation support for vtk. It is a
// vtkMapper2D that can be associated with a vtkActor2D and placed into a
// vtkRenderer.
//
// To use vtkTextMapper, specify an input text string.
// .SECTION See Also
// vtkMapper2D vtkActor2D vtkLegendBoxActor vtkCaptionActor2D vtkVectorText vtkTextProperty
#ifndef __vtkTextMapper_h
#define __vtkTextMapper_h
#include "vtkMapper2D.h"
class vtkActor2D;
class vtkTextProperty;
class vtkViewport;
class VTK_RENDERING_EXPORT vtkTextMapper : public vtkMapper2D
{
public:
vtkTypeRevisionMacro(vtkTextMapper,vtkMapper2D);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Creates a new text mapper.
static vtkTextMapper *New();
// Description:
// Return the size[2]/width/height of the rectangle required to draw this
// mapper (in pixels).
virtual void GetSize(vtkViewport*, int size[2]) {size[0]=size[0];};
virtual int GetWidth(vtkViewport*v);
virtual int GetHeight(vtkViewport*v);
// Description:
// Set the input text string to the mapper. The mapper recognizes "\n"
// as a carriage return/linefeed (line separator).
virtual void SetInput(const char *inputString);
vtkGetStringMacro(Input);
// Description:
// Set/Get the text property.
virtual void SetTextProperty(vtkTextProperty *p);
vtkGetObjectMacro(TextProperty,vtkTextProperty);
vtkGetMacro(NumberOfLines,int);
// Description:
// Shallow copy of an actor.
void ShallowCopy(vtkTextMapper *tm);
// Description:
// Determine the number of lines in the Input string (delimited by "\n").
int GetNumberOfLines(const char *input);
// Description:
// Set and return the font size required to make this mapper fit in a given
// target rectangle (width * height, in pixels).
virtual int SetConstrainedFontSize(vtkViewport*,
int targetWidth, int targetHeight);
// Description:
// Set and return the font size required to make each element of an array of
// mappers fit in a given rectangle (width * height, in pixels).
// This font size is the smallest size that was required to fit the largest
// mapper in this constraint.
// The resulting maximum area of the mappers is also returned.
static int SetMultipleConstrainedFontSize(vtkViewport*,
int targetWidth, int targetHeight,
vtkTextMapper** mappers,
int nbOfMappers,
int* maxResultingSize);
// Description:
// Get the available system font size matching a font size.
virtual int GetSystemFontSize(int size)
{ return size; };
protected:
vtkTextMapper();
~vtkTextMapper();
char* Input;
vtkTextProperty *TextProperty;
int LineSize;
int NumberOfLines;
int NumberOfLinesAllocated;
vtkTextMapper **TextLines;
// These functions are used to parse, process, and render multiple lines
char *NextLine(const char *input, int lineNum);
void GetMultiLineSize(vtkViewport* viewport, int size[2]);
void RenderOverlayMultipleLines(vtkViewport *viewport, vtkActor2D *actor);
private:
vtkTextMapper(const vtkTextMapper&); // Not implemented.
void operator=(const vtkTextMapper&); // Not implemented.
};
#endif
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