Qt 5.9 | Qt Charts | Candlestick Chart Example | candlestickdatareader.cpp Example File

Qt 5.9.3 Reference Documentation

# candlestickdatareader.cpp Example File

candlestickchart/candlestickdatareader.cpp

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      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the Qt Charts module of the Qt Toolkit.
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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;
      }