1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 or (at your option) any later version
20** approved by the KDE Free Qt Foundation. The licenses are as published by
21** the Free Software Foundation and appearing in the file LICENSE.GPL3
22** included in the packaging of this file. Please review the following
23** information to ensure the GNU General Public License requirements will
24** be met: https://www.gnu.org/licenses/gpl-3.0.html.
25**
26** $QT_END_LICENSE$
27**
28****************************************************************************/
29
30#include "candlestickdatareader.h"
31
32CandlestickDataReader::CandlestickDataReader(QIODevice *device)
33 : QTextStream(device)
34{
35}
36
37CandlestickDataReader::~CandlestickDataReader()
38{
39}
40
41void CandlestickDataReader::readFile(QIODevice *device)
42{
43 QTextStream::setDevice(device);
44}
45
46QCandlestickSet *CandlestickDataReader::readCandlestickSet()
47{
48 //! [1]
49 QString line = readLine();
50 if (line.startsWith(s: "#") || line.isEmpty())
51 return 0;
52 //! [1]
53
54 //! [2]
55 QStringList strList = line.split(sep: QLatin1Char(' '), behavior: Qt::SkipEmptyParts);
56 if (strList.count() != 5)
57 return 0;
58 //! [2]
59
60 //! [3]
61 const qreal timestamp = strList.at(i: 0).toDouble();
62 const qreal open = strList.at(i: 1).toDouble();
63 const qreal high = strList.at(i: 2).toDouble();
64 const qreal low = strList.at(i: 3).toDouble();
65 const qreal close = strList.at(i: 4).toDouble();
66 //! [3]
67
68 //! [4]
69 QCandlestickSet *candlestickSet = new QCandlestickSet(timestamp);
70 candlestickSet->setOpen(open);
71 candlestickSet->setHigh(high);
72 candlestickSet->setLow(low);
73 candlestickSet->setClose(close);
74 //! [4]
75
76 return candlestickSet;
77}
78

source code of qtcharts/examples/charts/candlestickchart/candlestickdatareader.cpp