Method mouseMoveEvent

src/openms_gui/source/VISUAL/Plot2DCanvas.cpp:674–818

  }

  void Plot2DCanvas::mouseMoveEvent(QMouseEvent* e)
  {
    grabKeyboard();     // (re-)grab keyboard after it has been released by unhandled key
    QPoint pos = e->pos();
    PointXYType data_pos = widgetToData_(pos);
    emit sendCursorStatus(unit_mapper_.getDim(DIM::X).formattedValue(data_pos[0]),
                          unit_mapper_.getDim(DIM::Y).formattedValue(data_pos[1]));

    PeakIndex near_peak = findNearestPeak_(pos);

    //highlight current peak and display peak coordinates
    if (action_mode_ == AM_MEASURE || (action_mode_ == AM_TRANSLATE && !(e->buttons() & Qt::LeftButton)))
    {
      //highlight peak
      selected_peak_ = near_peak;
      update_(OPENMS_PRETTY_FUNCTION);

      //show meta data in status bar (if available)
      if (selected_peak_.isValid())
      {
        String status;
        auto* lf = dynamic_cast<LayerDataFeature*>(&getCurrentLayer());
        auto* lc = dynamic_cast<LayerDataConsensus*>(&getCurrentLayer());
        if (lf || lc)
        {
          //add meta info
          const BaseFeature* f;
          if (lf)
          {
            f = &selected_peak_.getFeature(*lf->getFeatureMap());
          }
          else
          {
            f = &selected_peak_.getFeature(*lc->getConsensusMap());
          }
          std::vector<String> keys;
          f->getKeys(keys);
          for (Size m = 0; m < keys.size(); ++m)
          {
            status += " " + keys[m] + ": ";
            const DataValue& dv = f->getMetaValue(keys[m]);
            if (dv.valueType() == DataValue::DOUBLE_VALUE)
            { // use less precision for large numbers, for better readability
              int precision(2);
              if ((double)dv < 10) precision = 5;
              // ... and add 1k separators, e.g. '540,321.99'
              status += QLocale::c().toString((double)dv, 'f', precision);
            }
            else
            {
              status += (String)dv;
            }
          }
        }
        else if (auto* lp = dynamic_cast<LayerDataPeak*>(&getCurrentLayer()))
        {
          //meta info
          const ExperimentType::SpectrumType & s = selected_peak_.getSpectrum(*lp->getPeakData());