vtkLabelSizeCalculator.h

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

  Program:   Visualization Toolkit
  Module:    vtkLabelSizeCalculator.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 vtkLabelSizeCalculator_h
#define vtkLabelSizeCalculator_h

#include "vtkRenderingLabelModule.h" // For export macro
#include "vtkPassInputTypeAlgorithm.h"

class vtkIntArray;
class vtkTextRenderer;
class vtkStringArray;
class vtkTextProperty;

class VTKRENDERINGLABEL_EXPORT vtkLabelSizeCalculator : public vtkPassInputTypeAlgorithm
{
public:
  static vtkLabelSizeCalculator* New();
  void PrintSelf( ostream& os, vtkIndent indent ) override;
  vtkTypeMacro(vtkLabelSizeCalculator,vtkPassInputTypeAlgorithm);


  virtual void SetFontProperty(vtkTextProperty* fontProp, int type = 0);
  virtual vtkTextProperty* GetFontProperty(int type = 0);


  vtkSetStringMacro(LabelSizeArrayName);
  vtkGetStringMacro(LabelSizeArrayName);


  vtkSetMacro(DPI, int)
  vtkGetMacro(DPI, int)

protected:
  vtkLabelSizeCalculator();
  ~vtkLabelSizeCalculator() override;

  int FillInputPortInformation( int port, vtkInformation* info ) override;
  int RequestData(
    vtkInformation* request,
    vtkInformationVector** inInfo,
    vtkInformationVector* outInfo ) override;

  virtual vtkIntArray* LabelSizesForArray( vtkAbstractArray* labels, vtkIntArray* types );

  virtual void SetFontUtil( vtkTextRenderer* fontProp );
  vtkGetObjectMacro(FontUtil,vtkTextRenderer);

  vtkTextRenderer* FontUtil;
  char* LabelSizeArrayName;

  int DPI;

  class Internals;
  Internals* Implementation;

private:
  vtkLabelSizeCalculator( const vtkLabelSizeCalculator& ) = delete;
  void operator = ( const vtkLabelSizeCalculator& ) = delete;
};

#endif // vtkLabelSizeCalculator_h