dox/GUISupport/Qt/Chart/vtkQtChartShapeLocator.h

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

  Program:   Visualization Toolkit
  Module:    vtkQtChartShapeLocator.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 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/


#ifndef _vtkQtChartShapeLocator_h
#define _vtkQtChartShapeLocator_h

#include "vtkQtChartExport.h"
#include <QLinkedList> // Needed for parameter.
#include <QList> // Needed for parameter.

class vtkQtChartShape;
class QPointF;
class QRectF;


class VTKQTCHART_EXPORT vtkQtChartShapeLocatorNode
{
public:
  vtkQtChartShapeLocatorNode(vtkQtChartShape *element=0);
  ~vtkQtChartShapeLocatorNode();

  bool contains(const QPointF &point) const;

  bool intersects(const QRectF &area) const;

  const QRectF &getBounds() const {return *this->Bounds;}

  void setBounds(const QRectF &bounds);

  vtkQtChartShape *getElement() const {return this->Element;}

  void setElement(vtkQtChartShape *element);

  vtkQtChartShapeLocatorNode *getParent() const {return this->Parent;}

  void setParent(vtkQtChartShapeLocatorNode *parent) {this->Parent = parent;}

  bool hasChildren() const {return this->Nodes.size() > 0;}

  const QList<vtkQtChartShapeLocatorNode *> &getNodes() const {return this->Nodes;}

  QList<vtkQtChartShapeLocatorNode *> &getNodes() {return this->Nodes;}

  void updateBounds();

private:
  QRectF *Bounds;                            
  vtkQtChartShape *Element;                  
  vtkQtChartShapeLocatorNode *Parent;        
  QList<vtkQtChartShapeLocatorNode *> Nodes; 

private:
  vtkQtChartShapeLocatorNode(const vtkQtChartShapeLocatorNode &);
  vtkQtChartShapeLocatorNode &operator=(const vtkQtChartShapeLocatorNode &);
};


class VTKQTCHART_EXPORT vtkQtChartShapeLocator
{
public:
  vtkQtChartShapeLocator();
  ~vtkQtChartShapeLocator();

  void clear();

  void build(const QList<QList<vtkQtChartShape *> > &table);

  void build(const QList<vtkQtChartShape *> &list);

  void update();

  QList<vtkQtChartShape *> getItemsAt(const QPointF &point) const;

  QList<vtkQtChartShape *> getItemsIn(const QRectF &area) const;

  vtkQtChartShapeLocatorNode *getLast();

  vtkQtChartShapeLocatorNode *getPrevious(vtkQtChartShapeLocatorNode *node);

public:
  static void sort(QList<vtkQtChartShape *> &list);

private:
  void build(QLinkedList<QLinkedList<vtkQtChartShapeLocatorNode *> > &table);

private:
  vtkQtChartShapeLocatorNode *Root; 

private:
  vtkQtChartShapeLocator(const vtkQtChartShapeLocator &);
  vtkQtChartShapeLocator &operator=(const vtkQtChartShapeLocator &);
};

#endif