Method paintEvent

src/openms_gui/source/VISUAL/HistogramWidget.cpp:170–217

  }

  void HistogramWidget::paintEvent(QPaintEvent * /*e*/)
  {
    //histogram from buffer
    QPainter painter2(this);
    painter2.drawPixmap(margin_, 0, buffer_);

    //y-axis label
    painter2.rotate(270);
    painter2.setPen(Qt::black);
    QString label = "count";
    if (log_mode_)
    {
      label = "log ( count )";
    }
    painter2.drawText(0, 0, -height(), margin_, Qt::AlignHCenter | Qt::AlignVCenter, label);
    painter2.end();

    //draw splitters
    if (show_splitters_)
    {
      QPainter painter(this);
      painter.setPen(Qt::black);
      QFont label_font;
      label_font.setPointSize(8);

      //cout << "Left splitter: " << left_splitter_<< " dist: " << dist_.minBound() << endl;
      //cout << "Right splitter: " << right_splitter_<< " dist: " << dist_.maxBound() << endl;

      //left
      UInt p =  UInt(((left_splitter_ - dist_.minBound()) / (dist_.maxBound() - dist_.minBound())) * (width() - 2 * margin_)) + margin_;
      //cout << "Left splitter position: " << p << endl;
      painter.drawLine(p, margin_ - 8, p, height() - bottom_axis_->height());
      painter.drawLine(p, margin_ - 8, p + 5, margin_ - 8);
      painter.drawLine(p + 5, margin_ - 8, p, margin_ - 3);
      painter.setFont(label_font);
      painter.drawText(p, margin_ - 8, "lower boundary");
      painter.setFont(QFont());

      //right
      p = UInt(((right_splitter_ - dist_.minBound()) / (dist_.maxBound() - dist_.minBound())) * (width() - 2 * margin_)) + margin_;
      painter.drawLine(p, margin_ - 8, p, height() - bottom_axis_->height());
      painter.drawLine(p, margin_ - 8, p - 5, margin_ - 8);
      painter.drawLine(p - 5, margin_ - 8, p, margin_ - 3);
      painter.setFont(label_font);
      painter.drawText(p, margin_ - 8, "upper boundary");
      painter.setFont(QFont());
    }
  }

  void HistogramWidget::resizeEvent(QResizeEvent * /*e*/)
  {