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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.
=========================================================================*/
/**
* @class vtkGraphItem
* @brief a vtkContextItem that draws a block (optional label).
*
*
* This is a vtkContextItem that can be placed into a vtkContextScene. It draws
* a block of the given dimensions, and reacts to mouse events.
*/
#ifndef vtkGraphItem_h
#define vtkGraphItem_h
#include "vtkContextItem.h"
class vtkContext2D;
class vtkGraph;
class vtkGraphItem : public vtkContextItem
{
public:
vtkTypeMacro(vtkGraphItem, vtkContextItem);
virtual void PrintSelf(ostream &os, vtkIndent indent);
static vtkGraphItem *New();
vtkGetObjectMacro(Graph, vtkGraph);
virtual void SetGraph(vtkGraph* g);
/**
* Paint event for the item.
*/
virtual bool Paint(vtkContext2D *painter);
/**
* Returns true if the supplied x, y coordinate is inside the item.
*/
virtual bool Hit(const vtkContextMouseEvent &mouse);
/**
* Mouse enter event.
*/
virtual bool MouseEnterEvent(const vtkContextMouseEvent &mouse);
/**
* Mouse move event.
*/
virtual bool MouseMoveEvent(const vtkContextMouseEvent &mouse);
/**
* Mouse leave event.
*/
virtual bool MouseLeaveEvent(const vtkContextMouseEvent &mouse);
/**
* Mouse button down event.
*/
virtual bool MouseButtonPressEvent(const vtkContextMouseEvent &mouse);
/**
* Mouse button release event.
*/
virtual bool MouseButtonReleaseEvent(const vtkContextMouseEvent &mouse);
void UpdatePositions();
protected:
vtkGraphItem();
~vtkGraphItem();
float LastPosition[2];
bool MouseOver;
int MouseButtonPressed;
vtkGraph* Graph;
vtkIdType HitVertex;
class Implementation;
Implementation* Impl;
private:
vtkGraphItem(const vtkGraphItem &) VTK_DELETE_FUNCTION;
void operator=(const vtkGraphItem &) VTK_DELETE_FUNCTION;
};
#endif //vtkGraphItem_h
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