candlestickdatareader.cpp Example File | Qt Charts 5.12.10

- Qt 5.12
- Qt Charts
- Candlestick Chart Example
- candlestickdatareader.cpp Example File
- Qt Charts | Commercial or GPLv3

# 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.
     **
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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;
     }