Method drawText

3rdparty/qcustomplot/qcustomplot.cpp:5788–5830

! \internal This is a \ref placeTickLabel helper function. Draws the tick label specified in \a labelData with \a painter at the pixel positions \a x and \a y. This function is used by \ref placeTickLabel to create new tick labels for the cache, or to directly draw the labels on the QCustomPlot surface when label caching is disabled, i.e. when QCP::phCacheLabels plotting hint is no

  QCP::phCacheLabels plotting hint is not set.
*/
void QCPLabelPainterPrivate::drawText(QCPPainter *painter, const QPointF &pos, const LabelData &labelData) const
{
  // backup painter settings that we're about to change:
  QTransform oldTransform = painter->transform();
  QFont oldFont = painter->font();
  QPen oldPen = painter->pen();
  
  // transform painter to position/rotation:
  painter->translate(pos);
  painter->setTransform(labelData.transform, true);
  
  // draw text:
  painter->setFont(labelData.baseFont);
  painter->setPen(QPen(labelData.color));
  if (!labelData.expPart.isEmpty()) // use superscripted exponent typesetting
  {
    painter->drawText(0, 0, 0, 0, Qt::TextDontClip, labelData.basePart);
    if (!labelData.suffixPart.isEmpty())
      painter->drawText(labelData.baseBounds.width()+1+labelData.expBounds.width(), 0, 0, 0, Qt::TextDontClip, labelData.suffixPart);
    painter->setFont(labelData.expFont);
    painter->drawText(labelData.baseBounds.width()+1, 0, labelData.expBounds.width(), labelData.expBounds.height(), Qt::TextDontClip,  labelData.expPart);
  } else
  {
    painter->drawText(0, 0, labelData.totalBounds.width(), labelData.totalBounds.height(), Qt::TextDontClip | Qt::AlignHCenter, labelData.basePart);
  }
  
  /* Debug code to draw label bounding boxes, baseline, and capheight
  painter->save();
  painter->setPen(QPen(QColor(0, 0, 0, 150)));
  painter->drawRect(labelData.totalBounds);
  const int baseline = labelData.totalBounds.height()-mLetterDescent;
  painter->setPen(QPen(QColor(255, 0, 0, 150)));
  painter->drawLine(QLineF(0, baseline, labelData.totalBounds.width(), baseline));
  painter->setPen(QPen(QColor(0, 0, 255, 150)));
  painter->drawLine(QLineF(0, baseline-mLetterCapHeight, labelData.totalBounds.width(), baseline-mLetterCapHeight));
  painter->restore();
  */
  
  // reset painter settings to what it was before:
  painter->setTransform(oldTransform);
  painter->setFont(oldFont);
  painter->setPen(oldPen);
}

/*! \internal