vtkGraphItem.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkGraphItem.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 vtkGraphItem_h
#define vtkGraphItem_h
 
#include "vtkContextItem.h"
#include "vtkViewsInfovisModule.h" // For export macro
 
#include "vtkColor.h"  // For color types in API
#include "vtkNew.h"    // For vtkNew ivars
#include "vtkVector.h" // For vector types in API
 
class vtkGraph;
class vtkImageData;
class vtkIncrementalForceLayout;
class vtkRenderWindowInteractor;
class vtkTooltipItem;
 
class VTKVIEWSINFOVIS_EXPORT vtkGraphItem : public vtkContextItem
{
public:
  static vtkGraphItem* New();
  vtkTypeMacro(vtkGraphItem, vtkContextItem);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  virtual void SetGraph(vtkGraph* graph);
  vtkGetObjectMacro(Graph, vtkGraph);
 
  virtual vtkIncrementalForceLayout* GetLayout();
 
 
  virtual void StartLayoutAnimation(vtkRenderWindowInteractor* interactor);
  virtual void StopLayoutAnimation();
 
  virtual void UpdateLayout();
 
protected:
  vtkGraphItem();
  ~vtkGraphItem() override;
 
  bool Paint(vtkContext2D* painter) override;
 
  virtual void RebuildBuffers();
 
  virtual void PaintBuffers(vtkContext2D* painter);
 
  virtual bool IsDirty();
 
  virtual vtkIdType NumberOfVertices();
 
  virtual vtkIdType NumberOfEdges();
 
  virtual vtkIdType NumberOfEdgePoints(vtkIdType edge);
 
  virtual float EdgeWidth(vtkIdType edge, vtkIdType point);
 
  virtual vtkColor4ub EdgeColor(vtkIdType edge, vtkIdType point);
 
  virtual vtkVector2f EdgePosition(vtkIdType edge, vtkIdType point);
 
  virtual float VertexSize(vtkIdType vertex);
 
  virtual vtkColor4ub VertexColor(vtkIdType vertex);
 
  virtual int VertexMarker(vtkIdType vertex);
 
  virtual vtkVector2f VertexPosition(vtkIdType vertex);
 
  virtual vtkStdString VertexTooltip(vtkIdType vertex);
 
  static void ProcessEvents(
    vtkObject* caller, unsigned long event, void* clientData, void* callerData);
 
  virtual vtkIdType HitVertex(const vtkVector2f& pos);
 
 
  bool MouseMoveEvent(const vtkContextMouseEvent& event) override;
  bool MouseLeaveEvent(const vtkContextMouseEvent& event) override;
  bool MouseEnterEvent(const vtkContextMouseEvent& event) override;
  bool MouseButtonPressEvent(const vtkContextMouseEvent& event) override;
  bool MouseButtonReleaseEvent(const vtkContextMouseEvent& event) override;
  bool MouseWheelEvent(const vtkContextMouseEvent& event, int delta) override;
 
  bool Hit(const vtkContextMouseEvent& event) override;
 
  virtual void PlaceTooltip(vtkIdType v);
 
private:
  vtkGraphItem(const vtkGraphItem&) = delete;
  void operator=(const vtkGraphItem&) = delete;
 
  struct Internals;
  Internals* Internal;
 
  vtkGraph* Graph;
  vtkMTimeType GraphBuildTime;
  vtkNew<vtkImageData> Sprite;
  vtkNew<vtkIncrementalForceLayout> Layout;
  vtkNew<vtkTooltipItem> Tooltip;
};
 
#endif