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113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkLabelSizeCalculator.h
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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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/**
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* @class vtkLabelSizeCalculator
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*
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* This filter takes an input dataset, an array to process
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* (which must be a string array), and a text property.
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* It creates a new output array (named "LabelSize" by default) with
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* 4 components per tuple that contain the width, height, horizontal
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* offset, and descender height (in that order) of each string in
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* the array.
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*
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* Use the inherited SelectInputArrayToProcess to indicate a string array.
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* In no input array is specified, the first of the following that
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* is a string array is used: point scalars, cell scalars, field scalars.
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*
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* The second input array to process is an array specifying the type of
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* each label. Different label types may have different font properties.
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* This array must be a vtkIntArray.
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* Any type that does not map to a font property that was set will
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* be set to the type 0's type property.
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*/
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#ifndef vtkLabelSizeCalculator_h
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#define vtkLabelSizeCalculator_h
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#include "vtkRenderingLabelModule.h" // For export macro
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#include "vtkPassInputTypeAlgorithm.h"
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class vtkIntArray;
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class vtkTextRenderer;
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class vtkStringArray;
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class vtkTextProperty;
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class VTKRENDERINGLABEL_EXPORT vtkLabelSizeCalculator : public vtkPassInputTypeAlgorithm
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{
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public:
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static vtkLabelSizeCalculator* New();
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virtual void PrintSelf( ostream& os, vtkIndent indent );
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vtkTypeMacro(vtkLabelSizeCalculator,vtkPassInputTypeAlgorithm);
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//@{
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/**
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* Get/Set the font used compute label sizes.
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* This defaults to "Arial" at 12 points.
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* If type is provided, it refers to the type of the text label provided
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* in the optional label type array. The default type is type 0.
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*/
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virtual void SetFontProperty(vtkTextProperty* fontProp, int type = 0);
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virtual vtkTextProperty* GetFontProperty(int type = 0);
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//@}
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//@{
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/**
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* The name of the output array containing text label sizes
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* This defaults to "LabelSize"
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*/
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vtkSetStringMacro(LabelSizeArrayName);
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vtkGetStringMacro(LabelSizeArrayName);
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//@}
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//@{
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/**
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* Get/Set the DPI at which the labels are to be rendered. Defaults to 72.
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* @sa vtkWindow::GetDPI()
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*/
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vtkSetMacro(DPI, int)
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vtkGetMacro(DPI, int)
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//@}
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protected:
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vtkLabelSizeCalculator();
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virtual ~vtkLabelSizeCalculator();
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virtual int FillInputPortInformation( int port, vtkInformation* info );
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virtual int RequestData(
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vtkInformation* request,
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vtkInformationVector** inInfo,
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vtkInformationVector* outInfo );
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virtual vtkIntArray* LabelSizesForArray( vtkAbstractArray* labels, vtkIntArray* types );
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virtual void SetFontUtil( vtkTextRenderer* fontProp );
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vtkGetObjectMacro(FontUtil,vtkTextRenderer);
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vtkTextRenderer* FontUtil;
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char* LabelSizeArrayName;
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int DPI;
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class Internals;
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Internals* Implementation;
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private:
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vtkLabelSizeCalculator( const vtkLabelSizeCalculator& ) VTK_DELETE_FUNCTION;
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void operator = ( const vtkLabelSizeCalculator& ) VTK_DELETE_FUNCTION;
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};
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#endif // vtkLabelSizeCalculator_h
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