Candlestick Chart Example▲
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/**
**************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
***************************************************************************
*/
#include
"candlestickdatareader.h"
CandlestickDataReader::
CandlestickDataReader(QIODevice *
device)
:
QTextStream(device)
{
}
CandlestickDataReader::
~
CandlestickDataReader()
{
}
void
CandlestickDataReader::
readFile(QIODevice *
device)
{
QTextStream::
setDevice(device);
}
QCandlestickSet *
CandlestickDataReader::
readCandlestickSet()
{
QString line =
readLine();
if
(line.startsWith("#"
) ||
line.isEmpty())
return
0
;
QStringList strList =
line.split(" "
, QString::
SkipEmptyParts);
if
(strList.count() !=
5
)
return
0
;
const
qreal timestamp =
strList.at(0
).toDouble();
const
qreal open =
strList.at(1
).toDouble();
const
qreal high =
strList.at(2
).toDouble();
const
qreal low =
strList.at(3
).toDouble();
const
qreal close =
strList.at(4
).toDouble();
QCandlestickSet *
candlestickSet =
new
QCandlestickSet(timestamp);
candlestickSet-&
gt;setOpen(open);
candlestickSet-&
gt;setHigh(high);
candlestickSet-&
gt;setLow(low);
candlestickSet-&
gt;setClose(close);
return
candlestickSet;
}