1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#ifndef QBARDATAPROXY_H
#define QBARDATAPROXY_H
#include <QtDataVisualization/qabstractdataproxy.h>
#include <QtDataVisualization/qbardataitem.h>
#include <QVector>
QT_DATAVISUALIZATION_BEGIN_NAMESPACE
typedef QVector<QBarDataItem> QBarDataRow;
typedef QList<QBarDataRow *> QBarDataArray;
class QBarDataProxyPrivate;
class QT_DATAVISUALIZATION_EXPORT QBarDataProxy : public QAbstractDataProxy
{
Q_OBJECT
Q_PROPERTY(int rowCount READ rowCount)
public:
explicit QBarDataProxy(QObject *parent = 0);
virtual ~QBarDataProxy();
// TODO: Replace first part of class description in docs with this once all TODOs are done:
/*
* QBarDataProxy is optimized for adding, inserting, and removing rows of data.
* Adding a column essentially means modifying every row, which is comparatively very inefficient.
* Proxy is also optimized to use cases where the only defining characteristic of an individual
* bar is its value. Modifying other data that might be added in the future such as color of
* individual bar requires allocating additional data object for the bar.
*/
int rowCount() const;
const QBarDataArray *array() const;
const QBarDataRow *rowAt(int rowIndex) const;
const QBarDataItem *itemAt(int rowIndex, int columnIndex) const;
void resetArray(QBarDataArray *newArray);
void setRow(int rowIndex, QBarDataRow *row);
void setRows(int rowIndex, const QBarDataArray &rows);
// Setting a column is comparatively inefficient as it changes all rows.
// Can resize rows that are shorter than columnIndex.
// TODO void setColumn(int columnIndex, const QBarDataRow &column);
// TODO void setColumns(int columnIndex, const QBarDataArray &columns);
void setItem(int rowIndex, int columnIndex, const QBarDataItem &item);
// Change block of items
// TODO setItems(int rowIndex, int columnIndex, QBarDataArray *items);
int addRow(QBarDataRow *row);
int addRows(const QBarDataArray &rows);
// TODO int addColumn(const QBarDataRow &column); // returns the index of the added column
// TODO int addColumns(const QBarDataArray &columns); // returns the index of the first added column
void insertRow(int rowIndex, QBarDataRow *row);
void insertRows(int rowIndex, const QBarDataArray &rows);
// TODO void insertColumn(int columnIndex, const QBarDataRow &column);
// TODO void insertColumns(int columnIndex, const QBarDataArray &columns);
void removeRows(int rowIndex, int removeCount);
// TODO void removeColumns(int columnIndex, int removeCount);
signals:
void arrayReset();
void rowsAdded(int startIndex, int count);
void rowsChanged(int startIndex, int count);
void rowsRemoved(int startIndex, int count);
void rowsInserted(int startIndex, int count);
// TODO void columnsChanged(int startIndex, int count);
// TODO void columnsAdded(int startIndex, int count);
// TODO void columnsRemoved(int startIndex, int count);
// TODO void columnsInserted(int startIndex, int count);
void itemChanged(int rowIndex, int columnIndex); // TODO remove once itemsChanged is added?
// TODO void itemsChanged(int rowIndex, int columnIndex, int rowCount, int columnCount);
protected:
explicit QBarDataProxy(QBarDataProxyPrivate *d, QObject *parent = 0);
QBarDataProxyPrivate *dptr();
const QBarDataProxyPrivate *dptrc() const;
private:
Q_DISABLE_COPY(QBarDataProxy)
friend class Bars3DController;
};
QT_DATAVISUALIZATION_END_NAMESPACE
#endif // QBARDATAPROXY_H
|
