C++ DateRange::interval方法代码示例

本文整理汇总了C++中DateRange::interval方法的典型用法代码示例。如果您正苦于以下问题：C++ DateRange::interval方法的具体用法？C++ DateRange::interval怎么用？C++ DateRange::interval使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DateRange的用法示例。

在下文中一共展示了DateRange::interval方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: function

void
GUIWidget::downloadHistory ()
{
  _log->clear();
  setEnabled(FALSE);
  _okButton->setEnabled(FALSE);
  _cancelButton->setEnabled(TRUE);
  
  DateRange dr;
  QDateTime ed = QDateTime::currentDateTime();
  QDateTime sd = dr.interval(ed, _range->currentIndex());
  
  _timer->start(100);
  
  YahooHistoryDownload function(this);
  connect(&function, SIGNAL(signalMessage(QString)), _log, SLOT(append(const QString &)));
  connect(_cancelButton, SIGNAL(clicked()), &function, SLOT(stop()));
  function.download(_symbolButton->files(), sd, ed);
  
  _timer->stop();

  setEnabled(TRUE);
  _okButton->setEnabled(TRUE);
  _cancelButton->setEnabled(FALSE);
}

开发者ID:abhikalitra，项目名称:qtstalker，代码行数:25，代码来源:GUIWidget.cpp

示例2: downloadHistory

void GUIWidget::downloadHistory ()
{
  _log->clear();
  setEnabled(FALSE);
  _okButton->setEnabled(FALSE);

  DateRange dr;
  QDateTime ed = QDateTime::currentDateTime();
  QDateTime sd = dr.interval(ed, DateRange::_YEAR5);

  _timer->start(100);

  NetfondsHistoryDownload function(this);
  connect(&function, SIGNAL(signalMessage(QString)), _log, SLOT(append(const QString &)));
  function.download(getTickers()); //, sd, ed);
  _timer->stop();

  setEnabled(TRUE);
  _okButton->setEnabled(TRUE);
}

开发者ID:WeizhongDai，项目名称:qttrader，代码行数:20，代码来源:GUIWidget.cpp

示例3: getBars

int Database::getBars (Bars *bd)
{
    if (! bd)
        return 0;

    int length = bd->barLength();
    if (length == -1)
    {
        qDebug() << "Database::getBars: invalid length";
        return 0;
    }

    if (! getSymbol(bd))
        return 0;

    if (! init())
        return 0;

    // get last date in db
    QDateTime endDate = getMaxDate(bd);
    if (! endDate.isValid())
        return 0;

    DateRange dr;
    //Don't bother to load less the all values into memory
    //All computers are bound to be able handle this in year 2012
    //If ever porting to a mobile device, change at that point
    //bd->plotRange()
    QDateTime startDate = dr.interval(endDate, DateRange::_ALL);
    if (! startDate.isValid())
    {
        qDebug() << "Database::getBars: invalid range";
        return 0;
    }

    QSqlQuery q(_db);
    QString s = "SELECT date,open,high,low,close,volume";
    s.append(" FROM " + bd->table());
    s.append(" WHERE date >=" + startDate.toString("yyyyMMddHHmmss"));
    s.append(" AND date <=" + endDate.toString("yyyyMMddHHmmss"));
    s.append(" ORDER BY date ASC");
    q.exec(s);
    if (q.lastError().isValid())
    {
        qDebug() << "Database::getBars:" + q.lastError().text();
        qDebug() << s;
        return 0;
    }

    BarType bt;
    BarLength bl;
    QDateTime isDate, ieDate;
    CBar *bar = 0;
    while (q.next())
    {
        QDateTime lastDate = QDateTime::fromString(q.value(0).toString(), "yyyyMMddHHmmss");

        // is date greater than current bar range?
        if (lastDate >= ieDate || ! bar)
        {
            // save old bar
            if (bar)
                bd->setBar(bd->bars(), bar);

            // create new bar
            bl.interval(lastDate, bd->barLength(), isDate, ieDate);

            bar = new CBar;
            bar->setDate(lastDate);
            bar->set(bt.indexToString(BarType::_OPEN), q.value(1).toDouble());
            bar->set(bt.indexToString(BarType::_HIGH), q.value(2).toDouble());
            bar->set(bt.indexToString(BarType::_LOW), q.value(3).toDouble());
            bar->set(bt.indexToString(BarType::_CLOSE), q.value(4).toDouble());
            bar->set(bt.indexToString(BarType::_VOLUME), q.value(5).toDouble());
        }
        else
        {
            double v = q.value(2).toDouble();
            double v2;
            bar->get(bt.indexToString(BarType::_HIGH), v2);
            if (v > v2)
                bar->set(bt.indexToString(BarType::_HIGH), v);

            v = q.value(3).toDouble();
            bar->get(bt.indexToString(BarType::_LOW), v2);
            if (v < v2)
                bar->set(bt.indexToString(BarType::_LOW), v);

            bar->set(bt.indexToString(BarType::_CLOSE), q.value(4).toDouble());

            v = q.value(5).toDouble();
            bar->get(bt.indexToString(BarType::_VOLUME), v2);
            v += v2;
            bar->set(bt.indexToString(BarType::_VOLUME), v);
        }
    }

    // save any left over bar
    if (bar)
        bd->setBar(bd->bars(), bar);
//.........这里部分代码省略.........

开发者ID:harryhk，项目名称:qttrader，代码行数:101，代码来源:Database.cpp

示例4: q

int
DBStock::getBars (PluginData *pd)
{
  if (! init())
    return 0;
  
  if (! pd->bars)
    return 0;
  
  Bars *bd = pd->bars;
  
  // get last date in db
  QDateTime endDate = getMaxDate(bd);
  if (! endDate.isValid())
    return 0;
  
  DateRange dr;
  QDateTime startDate = dr.interval(endDate, bd->range());
  if (! startDate.isValid())
  {
    qDebug() << "DBStock::getBars: invalid range";
    return 0;
  }

  QSqlQuery q(_db);
  QString s = "SELECT date,open,high,low,close,volume";
  s.append(" FROM " + bd->table());
  s.append(" WHERE date >=" + startDate.toString("yyyyMMddHHmmss"));
  s.append(" AND date <=" + endDate.toString("yyyyMMddHHmmss"));
  s.append(" ORDER BY date ASC");
  q.exec(s);
  if (q.lastError().isValid())
  {
    qDebug() << "DBStock::getBars:" + q.lastError().text();
    qDebug() << s;
    return 0;
  }

  BarType bt;
  BarLength bl;
  QDateTime isDate, ieDate;
  CBar *bar = 0;
  while (q.next())
  {
    QDateTime lastDate = QDateTime::fromString(q.value(0).toString(), "yyyyMMddHHmmss");
    
    // is date greater than current bar range?
    if (lastDate >= ieDate || ! bar)
    {
      // save old bar
      if (bar)
        bd->setBar(bd->bars(), bar);
      
      // create new bar
      bl.interval(lastDate, bd->length(), isDate, ieDate);
      
      bar = new CBar;
      bar->setDate(lastDate);
      bar->set(bt.indexToString(BarType::_OPEN), q.value(1).toDouble());
      bar->set(bt.indexToString(BarType::_HIGH), q.value(2).toDouble());
      bar->set(bt.indexToString(BarType::_LOW), q.value(3).toDouble());
      bar->set(bt.indexToString(BarType::_CLOSE), q.value(4).toDouble());
      bar->set(bt.indexToString(BarType::_VOLUME), q.value(5).toDouble());
    }
    else
    {
      double v = q.value(2).toDouble();
      double v2;
      bar->get(bt.indexToString(BarType::_HIGH), v2);
      if (v > v2)
        bar->set(bt.indexToString(BarType::_HIGH), v);

      v = q.value(3).toDouble();
      bar->get(bt.indexToString(BarType::_LOW), v2);
      if (v < v2)
        bar->set(bt.indexToString(BarType::_LOW), v);

      bar->set(bt.indexToString(BarType::_CLOSE), q.value(4).toDouble());
      
      v = q.value(5).toDouble();
      bar->get(bt.indexToString(BarType::_VOLUME), v2);
      v += v2;
      bar->set(bt.indexToString(BarType::_VOLUME), v);
    }
  }

  // save any left over bar
  if (bar)
    bd->setBar(bd->bars(), bar);
  
  return 1;
}

开发者ID:abhikalitra，项目名称:qtstalker，代码行数:92，代码来源:DBStock.cpp

注：本文中的DateRange::interval方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。