Function addFeatures

src/openms_gui/source/VISUAL/TVDIATreeTabController.cpp:83–135

  }

  void addFeatures(Plot1DWidget* w, std::vector<OSWPeakGroup>& features)
  {
    // nothing to do...
    if (features.empty())
    {
      return;
    }
    // sort features by left RT
    std::sort(features.begin(), features.end(), [](const OSWPeakGroup& a, const OSWPeakGroup& b)
    {
      return a.getRTLeftWidth() < b.getRTLeftWidth();
    });
    const OSWPeakGroup* best_feature = &features[0];
    auto findBestFeature = [&best_feature](const OSWPeakGroup& f)
    {
      if (best_feature->getQValue() > f.getQValue())
      {
        best_feature = &f;
      }
    };
    std::for_each(features.begin(), features.end(), findBestFeature);
    if (best_feature->getQValue() == -1)
    { // no q-values are annotated. make them all grey.
      best_feature = nullptr;
    }
    GUIHelpers::OverlapDetector od(3); // three y-levels for showing annotation


    // show feature boundaries
    for (const auto& feature : features)
    {
      auto width = feature.getRTRightWidth() - feature.getRTLeftWidth();
      auto center = feature.getRTLeftWidth() + width / 2;
      String ann = String("RT:\n ") + String(feature.getRTExperimental(), false) + "\ndRT:\n " + String(feature.getRTDelta(), false) + "\nQ:\n " + String(feature.getQValue(), false);
      QColor col = GUIHelpers::ColorBrewer::Distinct().values[(best_feature == &feature) 
                          ? GUIHelpers::ColorBrewer::Distinct::LightGreen
                          : GUIHelpers::ColorBrewer::Distinct::LightGrey];
      Annotation1DVerticalLineItem* item = new Annotation1DVerticalLineItem(center, width, 150, false, col, ann.toQString());
      item->setSelected(false);
      auto text_size = item->getTextRect(); // this is in px units (Qt widget coordinates)
      // translate to axis units (our native 'data'):
      auto p_text = w->canvas()->widgetToDataDistance(text_size.width(), 0);
      auto chunk = od.placeItem(feature.getRTLeftWidth(), feature.getRTLeftWidth() + p_text.getX());
      item->setTextOffset(chunk * text_size.height());

      w->canvas()->getCurrentLayer().getCurrentAnnotations().push_back(item);
    }
    // paint the expected RT once
    auto expected_RT = features[0].getRTExperimental() - features[0].getRTDelta();
    Annotation1DItem* item = new Annotation1DVerticalLineItem(expected_RT, 3, 200, true, Qt::darkGreen, "");
    item->setSelected(false);
    w->canvas()->getCurrentLayer().getCurrentAnnotations().push_back(item);
  }