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candlestickdatareader.cpp Example File

candlestickchart/candlestickdatareader.cpp
/****************************************************************************
**
** 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
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** 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
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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#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->setOpen(open);
    candlestickSet->setHigh(high);
    candlestickSet->setLow(low);
    candlestickSet->setClose(close);

    return candlestickSet;
}
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