JobItemUtils.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/Model/Data/JobItemUtils.cpp
//! @brief     Implements class JobItemUtils
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "GUI/Model/Data/JobItemUtils.h"
#include "Device/Histo/SimulationResult.h"
#include "GUI/Model/Data/DataItem.h"
#include "GUI/Model/Device/InstrumentItems.h"
#include "GUI/Util/CoordName.h"
 
namespace {
 
//! Updates axes' titles
void updateAxesTitle(DataItem* intensityItem, const ICoordSystem& converter, Coords units)
{
    intensityItem->setXaxisTitle(QString::fromStdString(converter.axisName(0, units)));
    if (converter.rank() > 1)
        intensityItem->setYaxisTitle(QString::fromStdString(converter.axisName(1, units)));
}
 
} // namespace
 
 
//! Updates axes of Datafield in IntensityData item to correspond with ::P_AXES_UNITS selection.
//! InstrumentItem is used to get domain's detector map for given units.
 
void GUI::Model::JobItemUtils::updateDataAxes(DataItem* intensityItem,
                                              const InstrumentItem* instrumentItem)
{
    ASSERT(intensityItem);
 
    if (!instrumentItem) {
        // special case when reading old project files: project failed on load instrument
        // but we want to try to recover the rest.
        return;
    }
 
    if (!intensityItem->getDatafield())
        return;
 
    Coords requested_units = GUI::Util::CoordName::coordFromName(intensityItem->selectedCoords());
 
    auto* const converter = instrumentItem->createCoordSystem();
 
    auto newData = std::make_unique<Datafield>(converter->convertedAxes(requested_units));
 
    newData->setVector(intensityItem->getDatafield()->flatVector());
 
    intensityItem->setDatafield(newData.release());
    intensityItem->setAxesRangeToData();
    updateAxesTitle(intensityItem, *converter, requested_units);
}
 
//! Sets axes units suitable for given instrument.
 
void GUI::Model::JobItemUtils::setIntensityItemCoords(DataItem* intensityItem,
                                                      const InstrumentItem* instrumentItem)
{
    auto* const converter = instrumentItem->createCoordSystem();
    if (!converter)
        return;
    setIntensityItemCoords(intensityItem, *converter);
}
 
void GUI::Model::JobItemUtils::setIntensityItemCoords(DataItem* intensityItem,
                                                      const ICoordSystem& converter)
{
    ComboProperty combo = availableUnits(converter);
    intensityItem->setAxesUnits(combo);
}
 
void GUI::Model::JobItemUtils::createDefaultDetectorMap(DataItem* intensityItem,
                                                        const Instrument2DItem* instrumentItem)
{
    auto* const converter = instrumentItem->createCoordSystem();
    auto output_data = std::make_unique<Datafield>(converter->defaultAxes());
    intensityItem->setDatafield(output_data.release());
    setIntensityItemCoords(intensityItem, *converter);
    updateAxesTitle(intensityItem, *converter, converter->defaultUnits());
}
 
void GUI::Model::JobItemUtils::setResults(DataItem* intensityItem, const SimulationResult& result)
{
    if (intensityItem->getDatafield() == nullptr) {
        const auto& converter = result.converter();
        GUI::Model::JobItemUtils::setIntensityItemCoords(intensityItem, converter);
        updateAxesTitle(intensityItem, converter, converter.defaultUnits());
    }
    auto selected_units = GUI::Util::CoordName::coordFromName(intensityItem->selectedCoords());
    intensityItem->setDatafield(result.datafield(selected_units));
}
 
ComboProperty GUI::Model::JobItemUtils::availableUnits(const ICoordSystem& converter)
{
    ComboProperty result;
    for (auto units : converter.availableUnits()) {
        auto unit_name = GUI::Util::CoordName::nameFromCoord(units);
        if (!unit_name.isEmpty())
            result << unit_name;
    }
 
    result.setValue(GUI::Util::CoordName::nameFromCoord(converter.defaultUnits()));
    return result;
}