Method copyLayer

src/openms_gui/source/VISUAL/APPLICATIONS/TOPPViewBase.cpp:2351–2438

  }

  void TOPPViewBase::copyLayer(const QMimeData* data, QWidget* source, int id)
  {
    SpectraTreeTab* spec_view = (source ? qobject_cast<SpectraTreeTab*>(source->parentWidget()) : nullptr);
    try
    {
      // NOT USED RIGHT NOW, BUT KEEP THIS CODE (it was hard to find out how this is done)
      // decode data to get the row
      // QByteArray encoded_data = data->data(data->formats()[0]);
      // QDataStream stream(&encoded_data, QIODevice::ReadOnly);
      // int row, col;
      // stream >> row >> col;

      // set wait cursor
      setCursor(Qt::WaitCursor);
      RAIICleanup cl([&]() { setCursor(Qt::ArrowCursor); });

      // determine where to copy the data
      UInt new_id = (id == -1) ? 0 : id;

      if (source == layers_view_)
      {
        // only the selected row can be dragged => the source layer is the selected layer
        LayerDataBase& layer = getActiveCanvas()->getCurrentLayer();

        // attach feature, consensus and peak data          (new OnDiscMSExperiment());
        FeatureMapSharedPtrType features(new FeatureMapType());
        if (auto* lp = dynamic_cast<LayerDataFeature*>(&layer)) features = lp->getFeatureMap();

        ConsensusMapSharedPtrType consensus(new ConsensusMapType());
        if (auto* lp = dynamic_cast<LayerDataConsensus*>(&layer)) consensus = lp->getConsensusMap();

        ExperimentSharedPtrType peaks(new ExperimentType());
        ODExperimentSharedPtrType on_disc_peaks(new OnDiscMSExperiment());
        if (auto* lp = dynamic_cast<LayerDataPeak*>(&layer))
        {
          peaks = lp->getPeakDataMuteable();
          on_disc_peaks = lp->getOnDiscPeakData();
        }
        if (auto* lp = dynamic_cast<LayerDataChrom*>(&layer))
        {
          peaks = lp->getChromatogramData();
          on_disc_peaks = lp->getOnDiscPeakData();
        }
        // if the layer provides identification data -> retrieve it
        vector<PeptideIdentification> peptides;
        if (auto p = dynamic_cast<IPeptideIds*>(&layer); p != nullptr)
        {
          peptides = p->getPeptideIds();
        }

        // add the data
        addData(features, consensus, peptides, peaks, on_disc_peaks, layer.type, false, false, true, layer.filename, layer.getName(), new_id);
      }
      else if (spec_view != nullptr)
      {
        ExperimentSharedPtrType new_exp_sptr(new ExperimentType());
        if (LayerDataBase::DataType current_type; spec_view->getSelectedScan(*new_exp_sptr, current_type))
        {