Method showProjections_

src/openms_gui/source/VISUAL/Plot2DWidget.cpp:136–164

projections

  //  projections
  void Plot2DWidget::showProjections_(const LayerDataBase* source_layer)
  {
    auto [projection_ontoX, projection_ontoY, stats] =
      source_layer->getProjection(canvas_->getMapper().getDim(DIM::X).getUnit(), canvas_->getMapper().getDim(DIM::Y).getUnit(), canvas_->getVisibleArea().getAreaUnit());

    projectionInfo_(stats.number_of_datapoints, stats.sum_intensity, stats.max_intensity);

    auto va = canvas()->getVisibleArea().getAreaXY();

    projection_onto_Y_->showLegend(false);
    projection_onto_Y_->setMapper({{DIM_UNIT::INT, canvas_->getMapper().getDim(DIM::Y).getUnit()}}); // must be done before addLayer()
    projection_onto_Y_->canvas()->removeLayers();
    projection_onto_Y_->canvas()->addLayer(std::move(projection_ontoY));
    // manually set projected unit, since 'addPeakLayer' will guess a visible area, but we want the exact same scaling
    projection_onto_Y_->canvas()->setVisibleAreaY(va.minY(), va.maxY());
    grid_->setColumnStretch(3, 2);

    projection_onto_X_->showLegend(false);
    projection_onto_X_->setMapper({{canvas_->getMapper().getDim(DIM::X).getUnit(), DIM_UNIT::INT}}); // must be done before addLayer()
    projection_onto_X_->canvas()->removeLayers();
    projection_onto_X_->canvas()->addLayer(std::move(projection_ontoX));
    // manually set projected unit, since 'addPeakLayer' will guess a visible area, but we want the exact same scaling
    projection_onto_X_->canvas()->setVisibleAreaX(va.minX(), va.maxX());
    grid_->setRowStretch(0, 2);
    
    projection_box_->show();
    projection_onto_X_->show();
    projection_onto_Y_->show();
  }

  const Plot1DWidget* Plot2DWidget::getProjectionOntoX() const
  {