/**
* This function either shows or hides the given QCheckBox, based on the named property
* inside the instrument param file. When hidden, the default state will be used to
* reset to the "unused" state of the checkbox.
*
* @param parameterName :: The name of the property to look for inside the current inst param file.
* @param checkBox :: The checkbox to set the state of, and to either hide or show based on the current inst.
* @param defaultState :: The state to which the checkbox will be set upon hiding it.
*/
void IndirectDataReduction::setInstSpecificWidget(const std::string & parameterName, QCheckBox * checkBox, QCheckBox::ToggleState defaultState)
{
// Get access to instrument specific parameters via the loaded empty workspace.
std::string instName = m_uiForm.cbInst->currentText().toStdString();
Mantid::API::MatrixWorkspace_sptr input = boost::dynamic_pointer_cast<Mantid::API::MatrixWorkspace>(Mantid::API::AnalysisDataService::Instance().retrieve("__empty_" + instName));
if(input == NULL)
return;
Mantid::Geometry::Instrument_const_sptr instr = input->getInstrument();
// See if the instrument params file requests that the checkbox be shown to the user.
std::vector<std::string> showParams = instr->getStringParameter(parameterName);
std::string show = "";
if(!showParams.empty())
show = showParams[0];
if(show == "Show")
checkBox->setHidden(false);
else
{
checkBox->setHidden(true);
checkBox->setState(defaultState);
}
}
/**
* Attempt to extract an instrument double parameter from a specified
* instrument.
*
* @param instrument The instrument to extract the parameter from.
* @param parameterName The name of the parameter to extract.
*
* @return The extracted parameter if it is found, else
* boost::none.
*/
boost::optional<double> CalculatePaalmanPings::getInstrumentParameter(
Mantid::Geometry::Instrument_const_sptr instrument,
const std::string ¶meterName) {
if (instrument->hasParameter(parameterName)) {
const auto parameterValue = QString::fromStdString(
instrument->getStringParameter(parameterName)[0]);
return parameterValue.toDouble();
}
return boost::none;
}
/**
* Gets the eFixed value from the workspace using the instrument parameters.
*
* @param ws Pointer to the workspace
* @return eFixed value
*/
double IndirectTab::getEFixed(Mantid::API::MatrixWorkspace_sptr ws) {
Mantid::Geometry::Instrument_const_sptr inst = ws->getInstrument();
if (!inst)
throw std::runtime_error("No instrument on workspace");
// Try to get the parameter form the base instrument
if (inst->hasParameter("Efixed"))
return inst->getNumberParameter("Efixed")[0];
// Try to get it form the analyser component
if (inst->hasParameter("analyser")) {
std::string analyserName = inst->getStringParameter("analyser")[0];
auto analyserComp = inst->getComponentByName(analyserName);
if (analyserComp && analyserComp->hasParameter("Efixed"))
return analyserComp->getNumberParameter("Efixed")[0];
}
throw std::runtime_error("Instrument has no efixed parameter");
}
