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/*=========================================================================
Program: Visualization Toolkit
Module: vtkEdgeLayout.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.
=========================================================================*/
/*----------------------------------------------------------------------------
Copyright (c) Sandia Corporation
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
----------------------------------------------------------------------------*/
/**
* @class vtkEdgeLayout
* @brief layout graph edges
*
*
* This class is a shell for many edge layout strategies which may be set
* using the SetLayoutStrategy() function. The layout strategies do the
* actual work.
*/
#ifndef vtkEdgeLayout_h
#define vtkEdgeLayout_h
#include "vtkGraphAlgorithm.h"
#include "vtkInfovisLayoutModule.h" // For export macro
class vtkEdgeLayoutStrategy;
class vtkEventForwarderCommand;
class VTKINFOVISLAYOUT_EXPORT vtkEdgeLayout : public vtkGraphAlgorithm
{
public:
static vtkEdgeLayout* New();
vtkTypeMacro(vtkEdgeLayout, vtkGraphAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@{
/**
* The layout strategy to use during graph layout.
*/
void SetLayoutStrategy(vtkEdgeLayoutStrategy* strategy);
vtkGetObjectMacro(LayoutStrategy, vtkEdgeLayoutStrategy);
//@}
/**
* Get the modification time of the layout algorithm.
*/
vtkMTimeType GetMTime() override;
protected:
vtkEdgeLayout();
~vtkEdgeLayout() override;
vtkEdgeLayoutStrategy* LayoutStrategy;
//@{
/**
* This intercepts events from the strategy object and re-emits them
* as if they came from the layout engine itself.
*/
vtkEventForwarderCommand* EventForwarder;
unsigned long ObserverTag;
//@}
int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
private:
vtkGraph* InternalGraph;
vtkEdgeLayout(const vtkEdgeLayout&) = delete;
void operator=(const vtkEdgeLayout&) = delete;
};
#endif