LineViewer.cpp

  MantidQwtIMDWorkspaceData curveData(m_ws, isLogScaledY(),
      m_start, m_end, m_lineOptions->getNormalization());
  curveData.setPreviewMode(true);
  curveData.setPlotAxisChoice(m_lineOptions->getPlotAxis());
  m_previewCurve->setData(curveData);

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

  setupScaleEngine(curveData);

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

  m_plot->setAxisTitle( QwtPlot::xBottom, QString::fromStdString( curveData.getXAxisLabel() ));;
  m_plot->setAxisTitle( QwtPlot::yLeft, QString::fromStdString( 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)
  {
    MantidQwtMatrixWorkspaceData curveData(sliceMatrix, 0, isLogScaledY());
    m_fullCurve->setData(curveData);
    setupScaleEngine(curveData);
    Unit_const_sptr unit = sliceMatrix->getAxis(0)->unit();
    std::string title = unit->caption() + " (" + unit->label() + ")";
    m_plot->setAxisTitle( QwtPlot::xBottom, QString::fromStdString(title));;
    title = sliceMatrix->YUnit() + " (" + sliceMatrix->YUnitLabel() + ")";
    m_plot->setAxisTitle( QwtPlot::yLeft, QString::fromStdString(title));;
  }
  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, QString::fromStdString( curveData.getXAxisLabel() ));;
    m_plot->setAxisTitle( QwtPlot::yLeft, QString::fromStdString( 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
}