qwt_plot_dict.cpp

/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#include "qwt_plot_dict.h"

class QwtPlotDict::PrivateData
{
public:

    class ItemList: public QList<QwtPlotItem *>
    {
    public:
        void insertItem( QwtPlotItem *item )
        {
            if ( item == NULL )
                return;

            QList<QwtPlotItem *>::iterator it =
                qUpperBound( begin(), end(), item, LessZThan() );
            insert( it, item );
        }

        void removeItem( QwtPlotItem *item )
        {
            if ( item == NULL )
                return;

            QList<QwtPlotItem *>::iterator it =
                qLowerBound( begin(), end(), item, LessZThan() );

            for ( ; it != end(); ++it )
            {
                if ( item == *it )
                {
                    erase( it );
                    break;
                }
            }
        }
    private:
        class LessZThan
        {
        public:
            inline bool operator()( const QwtPlotItem *item1,
                const QwtPlotItem *item2 ) const
            {
                return item1->z() < item2->z();
            }
        };
    };

    ItemList itemList;
    bool autoDelete;
};

/*!
   Constructor

   Auto deletion is enabled.
   \sa setAutoDelete(), QwtPlotItem::attach()
*/
QwtPlotDict::QwtPlotDict()
{
    d_data = new QwtPlotDict::PrivateData;