Qwt User's Guide 6.2.0

qwt_polar_itemdict.cpp
1 /******************************************************************************
2 * QwtPolar Widget Library
3 * Copyright (C) 2008 Uwe Rathmann
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the Qwt License, Version 1.0
7 *****************************************************************************/
8
9 #include "qwt_polar_itemdict.h"
10
11 class QwtPolarItemDict::PrivateData
12 {
13 public:
14 class ItemList : public QList< QwtPolarItem* >
15 {
16 public:
17 void insertItem( QwtPolarItem* item )
18 {
19 if ( item == NULL )
20 return;
21
22 // Unfortunately there is no inSort operation
23 // for lists in Qt4. The implementation below
24 // is slow, but there shouldn't be many plot items.
25
26 QList< QwtPolarItem* >::Iterator it;
27 for ( it = begin(); it != end(); ++it )
28 {
29 if ( *it == item )
30 return;
31
32 if ( ( *it )->z() > item->z() )
33 {
34 insert( it, item );
35 return;
36 }
37 }
38 append( item );
39 }
40
41 void removeItem( QwtPolarItem* item )
42 {
43 if ( item == NULL )
44 return;
45
46 int i = 0;
47
48 QList< QwtPolarItem* >::Iterator it;
49 for ( it = begin(); it != end(); ++it )
50 {
51 if ( item == *it )
52 {
53 removeAt( i );
54 return;
55 }
56 i++;
57 }
58 }
59 };
60
61 ItemList itemList;
62 bool autoDelete;
63 };
64
71 QwtPolarItemDict::QwtPolarItemDict()
72 {
73 m_data = new QwtPolarItemDict::PrivateData;
74 m_data->autoDelete = true;
75 }
76
83 QwtPolarItemDict::~QwtPolarItemDict()
84 {
85 detachItems( QwtPolarItem::Rtti_PolarItem, m_data->autoDelete );
86 delete m_data;
87 }
88
97 void QwtPolarItemDict::setAutoDelete( bool autoDelete )
98 {
99 m_data->autoDelete = autoDelete;
100 }
101
106 bool QwtPolarItemDict::autoDelete() const
107 {
108 return m_data->autoDelete;
109 }
110
117 void QwtPolarItemDict::insertItem( QwtPolarItem* item )
118 {
119 m_data->itemList.insertItem( item );
120 }
121
128 void QwtPolarItemDict::removeItem( QwtPolarItem* item )
129 {
130 m_data->itemList.removeItem( item );
131 }
132
140 void QwtPolarItemDict::detachItems( int rtti, bool autoDelete )
141 {
142 PrivateData::ItemList list = m_data->itemList;
143 QwtPolarItemIterator it = list.constBegin();
144 while ( it != list.constEnd() )
145 {
146 QwtPolarItem* item = *it;
147
148 ++it; // increment before removing item from the list
149
150 if ( rtti == QwtPolarItem::Rtti_PolarItem || item->rtti() == rtti )
151 {
152 item->attach( NULL );
153 if ( autoDelete )
154 delete item;
155 }
156 }
157 }
158
168 const QwtPolarItemList& QwtPolarItemDict::itemList() const
169 {
170 return m_data->itemList;
171 }
QList
Definition: qwt_abstract_legend.h:17
QwtPolarItemDict::autoDelete
bool autoDelete() const
Definition: qwt_polar_itemdict.cpp:106
QwtPolarItemDict::setAutoDelete
void setAutoDelete(bool)
Definition: qwt_polar_itemdict.cpp:97
QwtPolarItemDict::itemList
const QwtPolarItemList & itemList() const
A QwtPolarItemList of all attached plot items.
Definition: qwt_polar_itemdict.cpp:168
QwtPolarItemDict::QwtPolarItemDict
QwtPolarItemDict()
Definition: qwt_polar_itemdict.cpp:71
QwtPolarItemDict::insertItem
void insertItem(QwtPolarItem *)
Definition: qwt_polar_itemdict.cpp:117
QwtPolarItemDict::detachItems
void detachItems(int rtti=QwtPolarItem::Rtti_PolarItem, bool autoDelete=true)
Definition: qwt_polar_itemdict.cpp:140
QwtPolarItemDict::~QwtPolarItemDict
~QwtPolarItemDict()
Definition: qwt_polar_itemdict.cpp:83
QwtPolarItemDict::removeItem
void removeItem(QwtPolarItem *)
Definition: qwt_polar_itemdict.cpp:128
QwtPolarItem
Base class for items on a polar plot.
Definition: qwt_polar_item.h:38
QwtPolarItem::z
double z() const
Definition: qwt_polar_item.cpp:129
QwtPolarItem::Rtti_PolarItem
@ Rtti_PolarItem
Unspecific value, that can be used, when it doesn't matter.
Definition: qwt_polar_item.h:49
QwtPolarItem::attach
void attach(QwtPolarPlot *plot)
Attach the item to a plot.
Definition: qwt_polar_item.cpp:74
QwtPolarItem::rtti
virtual int rtti() const
Definition: qwt_polar_item.cpp:112