Method drawOhlcPlot

qcustomplot.cpp:26754–26803

! \internal Draws the data from \a begin to \a end-1 as OHLC bars with the provided \a painter. This method is a helper function for \ref draw. It is used when the chart style is \ref csOhlc. */

  This method is a helper function for \ref draw. It is used when the chart style is \ref csOhlc.
*/
void QCPFinancial::drawOhlcPlot(QCPPainter *painter, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, bool isSelected)
{
  QCPAxis *keyAxis = mKeyAxis.data();
  QCPAxis *valueAxis = mValueAxis.data();
  if (!keyAxis || !valueAxis) { qDebug() << Q_FUNC_INFO << "invalid key or value axis"; return; }
  
  if (keyAxis->orientation() == Qt::Horizontal)
  {
    for (QCPFinancialDataContainer::const_iterator it = begin; it != end; ++it)
    {
      if (isSelected && mSelectionDecorator)
        mSelectionDecorator->applyPen(painter);
      else if (mTwoColored)
        painter->setPen(it->close >= it->open ? mPenPositive : mPenNegative);
      else
        painter->setPen(mPen);
      double keyPixel = keyAxis->coordToPixel(it->key);
      double openPixel = valueAxis->coordToPixel(it->open);
      double closePixel = valueAxis->coordToPixel(it->close);
      // draw backbone:
      painter->drawLine(QPointF(keyPixel, valueAxis->coordToPixel(it->high)), QPointF(keyPixel, valueAxis->coordToPixel(it->low)));
      // draw open:
      double pixelWidth = getPixelWidth(it->key, keyPixel); // sign of this makes sure open/close are on correct sides
      painter->drawLine(QPointF(keyPixel-pixelWidth, openPixel), QPointF(keyPixel, openPixel));
      // draw close:
      painter->drawLine(QPointF(keyPixel, closePixel), QPointF(keyPixel+pixelWidth, closePixel));
    }
  } else
  {
    for (QCPFinancialDataContainer::const_iterator it = begin; it != end; ++it)
    {
      if (isSelected && mSelectionDecorator)
        mSelectionDecorator->applyPen(painter);
      else if (mTwoColored)
        painter->setPen(it->close >= it->open ? mPenPositive : mPenNegative);
      else
        painter->setPen(mPen);
      double keyPixel = keyAxis->coordToPixel(it->key);
      double openPixel = valueAxis->coordToPixel(it->open);
      double closePixel = valueAxis->coordToPixel(it->close);
      // draw backbone:
      painter->drawLine(QPointF(valueAxis->coordToPixel(it->high), keyPixel), QPointF(valueAxis->coordToPixel(it->low), keyPixel));
      // draw open:
      double pixelWidth = getPixelWidth(it->key, keyPixel); // sign of this makes sure open/close are on correct sides
      painter->drawLine(QPointF(openPixel, keyPixel-pixelWidth), QPointF(openPixel, keyPixel));
      // draw close:
      painter->drawLine(QPointF(closePixel, keyPixel), QPointF(closePixel, keyPixel+pixelWidth));
    }
  }
}

/*! \internal