Qwt Polar User's Guide: QwtPolarItemDict Class Reference

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:
[legend]

## 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

  rtti | In case of QwtPolarItem::Rtti_PlotItem detach all items otherwise only those items of the type rtti.
  autoDelete | If true, delete all detached items

void QwtPolarItemDict::insertItem | ( | QwtPolarItem * | item | ) |
| protected

Insert a plot item

Parameters

  item | PlotItem

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

  item | PlotItem

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