dox/GUISupport/Qt/Chart/vtkQtChartBarLocator.h

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

  Program:   Visualization Toolkit
  Module:    vtkQtChartBarLocator.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 _vtkQtChartBarLocator_h
#define _vtkQtChartBarLocator_h

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

class vtkQtChartBar;
class QPointF;
class QRectF;


class VTKQTCHART_EXPORT vtkQtChartBarLocatorNode
{
public:
  vtkQtChartBarLocatorNode(vtkQtChartBar *element=0);
  ~vtkQtChartBarLocatorNode();

  bool contains(const QPointF &point) const;

  bool intersects(const QRectF &area) const;

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

  void setBounds(const QRectF &bounds);

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

  void setElement(vtkQtChartBar *element);

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

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

  bool hasChildren() const {return this->First || this->Second;}

  vtkQtChartBarLocatorNode *getFirst() const {return this->First;}

  void setFirst(vtkQtChartBarLocatorNode *first) {this->First = first;}

  vtkQtChartBarLocatorNode *getSecond() const {return this->Second;}

  void setSecond(vtkQtChartBarLocatorNode *second) {this->Second = second;}

  void updateBounds();

private:
  QRectF *Bounds;                   
  vtkQtChartBar *Element;           
  vtkQtChartBarLocatorNode *Parent; 
  vtkQtChartBarLocatorNode *First;  
  vtkQtChartBarLocatorNode *Second; 

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


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

  void clear();

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

  void update();

  vtkQtChartBar *getItemAt(const QPointF &point) const;

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

  vtkQtChartBarLocatorNode *getLast();

  vtkQtChartBarLocatorNode *getPrevious(vtkQtChartBarLocatorNode *node);

private:
  void buildTree(QLinkedList<vtkQtChartBarLocatorNode *> &list) const;

private:
  vtkQtChartBarLocatorNode *Root;          
  QList<vtkQtChartBarLocatorNode *> Items; 

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

#endif