DoubleSpinBox.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Common/DoubleSpinBox.cpp
//! @brief     Implements class DoubleSpinBox
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2021
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "GUI/View/Common/DoubleSpinBox.h"
#include "GUI/View/Tool/EditUtil.h"
#include <QWheelEvent>
 
DoubleSpinBox::DoubleSpinBox(QWidget* parent, const DoubleDescriptor& d)
    : QDoubleSpinBox(parent)
    , m_valueDescriptor(d)
{
    setFocusPolicy(Qt::StrongFocus);
    GUI::View::EditUtil::configSpinbox(this, d.decimals, d.limits);
    setToolTip(d.tooltip);
    setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
 
    if (std::holds_alternative<QString>(m_valueDescriptor.unit))
        setDisplayUnit(Unit::other);
    else
        setDisplayUnit(std::get<Unit>(m_valueDescriptor.unit));
 
    QObject::connect(this, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this,
                     &DoubleSpinBox::onDisplayValueChanged);
}
 
void DoubleSpinBox::setDisplayUnit(Unit displayUnit)
{
    m_displayUnit = displayUnit;
 
    if (m_showUnitAsSuffix) {
        const QString suffix = displayUnitAsString();
        if (suffix.isEmpty())
            setSuffix("");
        else
            setSuffix(" " + suffix);
    }
 
    QSignalBlocker b(this);
    setValue(toDisplayValue(m_valueDescriptor.get()));
}
 
double DoubleSpinBox::toDisplayValue(double baseValue) const
{
    return convert(baseValue, baseUnit(), m_displayUnit);
}
 
double DoubleSpinBox::toBaseValue(double displayValue) const
{
    return convert(displayValue, m_displayUnit, baseUnit());
}
 
QString DoubleSpinBox::displayUnitAsString() const
{
    if (std::holds_alternative<QString>(m_valueDescriptor.unit))
        return std::get<QString>(m_valueDescriptor.unit);
 
    return unitAsString(m_displayUnit);
}
 
const DoubleDescriptor& DoubleSpinBox::valueDescriptor() const
{
    return m_valueDescriptor;
}
 
void DoubleSpinBox::setBaseValue(double baseValue)
{
    setValue(toDisplayValue(baseValue));
}
 
void DoubleSpinBox::wheelEvent(QWheelEvent* event)
{
    if (!hasFocus())
        event->ignore();
    else
        QDoubleSpinBox::wheelEvent(event);
}
 
void DoubleSpinBox::onDisplayValueChanged(double newDisplayValue)
{
    emit baseValueChanged(toBaseValue(newDisplayValue));
}
 
Unit DoubleSpinBox::baseUnit() const
{
    if (std::holds_alternative<QString>(m_valueDescriptor.unit))
        return Unit::other;
 
    return std::get<Unit>(m_valueDescriptor.unit);
}
 
void DoubleSpinBox::updateValue()
{
    QSignalBlocker b(this);
    setBaseValue(m_valueDescriptor.get());
}