Qwt Polar User's Guide  1.1.1
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QwtPolarItemDict Class Reference

A dictionary for polar plot items. More...

#include <qwt_polar_itemdict.h>

Inheritance diagram for QwtPolarItemDict:
Inheritance graph
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Public Member Functions

 QwtPolarItemDict ()
 
 ~QwtPolarItemDict ()
 
void setAutoDelete (bool)
 
bool autoDelete () const
 
const QwtPolarItemList & itemList () const
 A QwtPolarItemList of all attached plot items. More...
 
void detachItems (int rtti=QwtPolarItem::Rtti_PolarItem, bool autoDelete=true)
 

Protected Member Functions

void insertItem (QwtPolarItem *)
 
void removeItem (QwtPolarItem *)
 

Detailed Description

A dictionary for polar plot items.

QwtPolarItemDict organizes polar plot items in increasing z-order. If autoDelete() is enabled, all attached items will be deleted in the destructor of the dictionary.

See Also
QwtPolarItem::attach(), QwtPolarItem::detach(), QwtPolarItem::z()

Constructor & Destructor Documentation

QwtPolarItemDict::QwtPolarItemDict ( )
explicit

Constructor

Auto deletion is enabled.

See Also
setAutoDelete, attachItem
QwtPolarItemDict::~QwtPolarItemDict ( )

Destructor

If autoDelete is on, all attached items will be deleted

See Also
setAutoDelete, autoDelete, attachItem

Member Function Documentation

bool QwtPolarItemDict::autoDelete ( ) const
Returns
true if auto deletion is enabled
See Also
setAutoDelete, attachItem
void QwtPolarItemDict::detachItems ( int  rtti = QwtPolarItem::Rtti_PolarItem,
bool  autoDelete = true 
)

Detach items from the dictionary

Parameters
rttiIn case of QwtPolarItem::Rtti_PlotItem detach all items otherwise only those items of the type rtti.
autoDeleteIf true, delete all detached items
void QwtPolarItemDict::insertItem ( QwtPolarItem item)
protected

Insert a plot item

Parameters
itemPlotItem
See Also
removeItem()
const QwtPolarItemList & QwtPolarItemDict::itemList ( ) const

A QwtPolarItemList of all attached plot items.

Returns
List of all attached plot items.
Note
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.
void QwtPolarItemDict::removeItem ( QwtPolarItem item)
protected

Remove a plot item

Parameters
itemPlotItem
See Also
insertItem()
void QwtPolarItemDict::setAutoDelete ( bool  autoDelete)

En/Disable Auto deletion

If Auto deletion is on all attached plot items will be deleted in the destructor of QwtPolarItemDict. The default value is on.

See Also
autoDelete, attachItem