LineViewer.cpp

    m_previewCurve->attach(m_plot);
  }

  setupScaleEngine(curveData);

  m_previewCurve->setVisible(true);
  m_plot->replot();
  m_plot->setTitle("Preview Plot");

  m_plot->setAxisTitle(QwtPlot::xBottom, curveData.getXAxisLabel());
  m_plot->setAxisTitle(QwtPlot::yLeft, curveData.getYAxisLabel());
}

/**
Gets the dimension index corresponding to the lineviewers preview plot x axis.
@return the index.
*/
int LineViewer::getXAxisDimensionIndex() const {
  MantidQwtIMDWorkspaceData curveData(m_ws, isLogScaledY(), m_start, m_end,
                                      m_lineOptions->getNormalization());
  curveData.setPreviewMode(true);
  curveData.setPlotAxisChoice(m_lineOptions->getPlotAxis());
  return curveData.currentPlotXAxis();
}

/**
 * Getter for the log scaled status.
 * @return True if and only if the y-axis is log scaled.
 */
bool LineViewer::isLogScaledY() const { return m_lineOptions->isLogScaledY(); }

//-----------------------------------------------------------------------------
/** Calculate and show the full (integrated) line, using the latest
 * integrated workspace. The apply() method must have been called
 * before calling this. */
void LineViewer::showFull() {
  if (!m_sliceWS)
    return;
  MatrixWorkspace_sptr sliceMatrix =
      boost::dynamic_pointer_cast<MatrixWorkspace>(m_sliceWS);
  if (sliceMatrix) {
    const bool distribution(false);
    QwtWorkspaceSpectrumData curveData(*sliceMatrix, 0, isLogScaledY(),
                                       distribution);
    m_fullCurve->setData(curveData);
    setupScaleEngine(curveData);
    m_plot->setAxisTitle(QwtPlot::xBottom, curveData.getXAxisLabel());
    m_plot->setAxisTitle(QwtPlot::yLeft, curveData.getYAxisLabel());
  } else {
    MantidQwtIMDWorkspaceData curveData(m_sliceWS, isLogScaledY(), VMD(), VMD(),
                                        m_lineOptions->getNormalization());
    curveData.setPreviewMode(false);
    curveData.setPlotAxisChoice(m_lineOptions->getPlotAxis());
    m_fullCurve->setData(curveData);
    setupScaleEngine(curveData);
    m_plot->setAxisTitle(QwtPlot::xBottom, curveData.getXAxisLabel());
    m_plot->setAxisTitle(QwtPlot::yLeft, curveData.getYAxisLabel());
  }

  if (m_previewCurve->isVisible()) {
    m_previewCurve->setVisible(false);
    m_previewCurve->detach();
    m_fullCurve->attach(m_plot);
  }

  m_fullCurve->setVisible(true);
  m_plot->replot();
  m_plot->setTitle("Integrated Line Plot");
}

//-----------------------------------------------------------------------------
/** Slot called when the options of the plot display change (normalization
 * or plot axis.
 * Refreshes the preview or full plot, whichever is visible.
 */
void LineViewer::refreshPlot() {
  if (m_previewCurve->isVisible())
    showPreview();
  else
    showFull();
}

/**
 * Handler for the log10 toggle axis event.
 */
void LineViewer::onToggleLogYAxis() { refreshPlot(); }

} // namespace
}