Method mouseMoveEvent

src/openms_gui/source/VISUAL/Plot1DCanvas.cpp:396–470

  }

  void Plot1DCanvas::mouseMoveEvent(QMouseEvent* e)
  {
    // mouse position relative to the diagram widget
    QPoint p = e->pos();
    PointXYType data_pos = widgetToData(p);
    emit sendCursorStatus(unit_mapper_.getDim(DIM::X).formattedValue(data_pos[0]),
                          unit_mapper_.getDim(DIM::Y).formattedValue(data_pos[1]));

    PeakIndex near_peak = findPeakAtPosition_(p);

    if (e->buttons() & Qt::LeftButton)
    {
      bool move = moving_annotations_;
      if (mirror_mode_ && (getCurrentLayer().flipped ^ (p.y() > height() / 2)))
      {
        move = false;
      }
      if (move)
      {
        recalculatePercentageFactor_(getCurrentLayerIndex());
        PointXYType delta = widgetToData(p) - widgetToData(last_mouse_pos_);

        Annotations1DContainer& ann_1d = getCurrentLayer().getCurrentAnnotations();
        for (Annotations1DContainer::Iterator it = ann_1d.begin(); it != ann_1d.end(); ++it)
        {
          if ((*it)->isSelected())
          {
            (*it)->move(delta, gr_, unit_mapper_);         
          }
        }
        update_(OPENMS_PRETTY_FUNCTION);
        last_mouse_pos_ = p;
      }
      else if (action_mode_ == AM_TRANSLATE)
      {
        // translation in data metric
        const double shift = widgetToData(last_mouse_pos_).getX() - widgetToData(p).getX();
        auto new_va = visible_area_.cloneWith(visible_area_.getAreaXY() + PointXYType(shift, 0)).getAreaUnit();

        // change data area
        changeVisibleArea_(new_va);
        last_mouse_pos_ = p;
      }
      else if (action_mode_ == AM_MEASURE)
      {
        if (near_peak.peak != measurement_start_.peak)
        {
          selected_peak_ = near_peak;
          last_mouse_pos_ = p;
          update_(OPENMS_PRETTY_FUNCTION);
        }
      }
      else if (action_mode_ == AM_ZOOM)
      {
        const auto pixel_area = canvasPixelArea();
        auto r_start = gr_.gravitateMin(last_mouse_pos_, pixel_area);
        auto r_end = gr_.gravitateMax(p, pixel_area);
        rubber_band_.setGeometry(QRect(r_start, r_end).normalized());