DoubleLineEdit.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Common/DoubleLineEdit.cpp
//! @brief     Implements class DoubleLineEdit
//!
//! @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/DoubleLineEdit.h"
#include <QDoubleValidator>
 
DoubleLineEdit::DoubleLineEdit(QWidget* parent, const DoubleDescriptor& d)
    : QLineEdit(parent)
    , m_valueDescriptor(d)
{
    m_validator = new QDoubleValidator(0.0, 1e+200, 1000, this);
    m_validator->setNotation(QDoubleValidator::ScientificNotation);
    const double minimum =
        d.limits.hasLowerLimit() ? std::max(d.limits.lowerLimit(), -1e+200) : -1e+200;
    const double maximum =
        d.limits.hasUpperLimit() ? std::min(d.limits.upperLimit(), +1e+200) : +1e+200;
    m_validator->setRange(minimum, maximum, 1000);
    setValidator(m_validator);
 
    setBaseValue(m_valueDescriptor.get());
 
    connect(this, &QLineEdit::editingFinished, this, &DoubleLineEdit::onEditingFinished);
}
 
void DoubleLineEdit::setBaseValue(double baseValue)
{
    setText(QString::number(baseValue, 'g'));
}
 
const DoubleDescriptor& DoubleLineEdit::valueDescriptor() const
{
    return m_valueDescriptor;
}
 
void DoubleLineEdit::onEditingFinished()
{
    const double new_value = text().toDouble();
    if (new_value != m_valueDescriptor.get())
        emit baseValueChanged(new_value);
}