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/* -*- 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;
d_data->autoDelete = true;
}
/*!
Destructor
If autoDelete() is on, all attached items will be deleted
\sa setAutoDelete(), autoDelete(), QwtPlotItem::attach()
*/
QwtPlotDict::~QwtPlotDict()
{
detachItems( QwtPlotItem::Rtti_PlotItem, d_data->autoDelete );
delete d_data;
}
/*!
En/Disable Auto deletion
If Auto deletion is on all attached plot items will be deleted
in the destructor of QwtPlotDict. The default value is on.
\sa autoDelete(), insertItem()
*/
void QwtPlotDict::setAutoDelete( bool autoDelete )
{
d_data->autoDelete = autoDelete;
}
/*!
\return true if auto deletion is enabled
\sa setAutoDelete(), insertItem()
*/
bool QwtPlotDict::autoDelete() const
{
return d_data->autoDelete;
}
/*!
Insert a plot item
\param item PlotItem
\sa removeItem()
*/
void QwtPlotDict::insertItem( QwtPlotItem *item )
{
d_data->itemList.insertItem( item );
}
/*!
Remove a plot item
\param item PlotItem
\sa insertItem()
*/
void QwtPlotDict::removeItem( QwtPlotItem *item )
{
d_data->itemList.removeItem( item );
}
/*!
Detach items from the dictionary
\param rtti In case of QwtPlotItem::Rtti_PlotItem detach all items
otherwise only those items of the type rtti.
\param autoDelete If true, delete all detached items
*/
void QwtPlotDict::detachItems( int rtti, bool autoDelete )
{
PrivateData::ItemList list = d_data->itemList;
QwtPlotItemIterator it = list.begin();
while ( it != list.end() )
{
QwtPlotItem *item = *it;
++it; // increment before removing item from the list
if ( rtti == QwtPlotItem::Rtti_PlotItem || item->rtti() == rtti )
{
item->attach( NULL );
if ( autoDelete )
delete item;
}
}
}
/*!
\brief A QwtPlotItemList of all attached plot items.
Use caution when iterating these lists, as removing/detaching an item will
invalidate the iterator. Instead you can place pointers to objects to be
removed in a removal list, and traverse that list later.
\return List of all attached plot items.
*/
const QwtPlotItemList &QwtPlotDict::itemList() const
{
return d_data->itemList;
}
/*!
\return List of all attached plot items of a specific type.
\param rtti See QwtPlotItem::RttiValues
\sa QwtPlotItem::rtti()
*/
QwtPlotItemList QwtPlotDict::itemList( int rtti ) const
{
if ( rtti == QwtPlotItem::Rtti_PlotItem )
return d_data->itemList;
QwtPlotItemList items;
PrivateData::ItemList list = d_data->itemList;
for ( QwtPlotItemIterator it = list.begin(); it != list.end(); ++it )
{
QwtPlotItem *item = *it;
if ( item->rtti() == rtti )
items += item;
}
return items;
}
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