doubleeditor.cpp

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//  ************************************************************************************************
//
//  qt-mvvm: Model-view-view-model framework for large GUI applications
//
//! @file      mvvm/viewmodel/mvvm/editors/doubleeditor.cpp
//! @brief     Implements class CLASS?
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2020
//! @authors   Gennady Pospelov et al, Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "mvvm/editors/doubleeditor.h"
#include "mvvm/utils/numericutils.h"
#include <QDoubleSpinBox>
#include <QVBoxLayout>
#include <stdexcept>
 
using namespace ModelView;
 
DoubleEditor::DoubleEditor(QWidget* parent)
    : CustomEditor(parent), m_doubleEditor(new QDoubleSpinBox)
{
    setFocusPolicy(Qt::StrongFocus);
    m_doubleEditor->setFocusPolicy(Qt::StrongFocus);
    m_doubleEditor->setKeyboardTracking(false);
 
    auto layout = new QVBoxLayout;
    layout->setMargin(0);
    layout->setSpacing(0);
 
    layout->addWidget(m_doubleEditor);
 
    connect(m_doubleEditor,
            static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged),
            [=] { this->onEditingFinished(); });
 
    setLayout(layout);
 
    setFocusProxy(m_doubleEditor);
}
 
void DoubleEditor::setRange(double minimum, double maximum)
{
    m_doubleEditor->setRange(minimum, maximum);
}
 
void DoubleEditor::setDecimals(int decimals)
{
    m_doubleEditor->setDecimals(decimals);
}
 
void DoubleEditor::setSingleStep(double value)
{
    m_doubleEditor->setSingleStep(value);
}
 
void DoubleEditor::onEditingFinished()
{
    double new_value = m_doubleEditor->value();
 
    if (!Utils::AreAlmostEqual(new_value, m_data.value<double>()))
        setDataIntern(QVariant::fromValue(new_value));
}
 
void DoubleEditor::update_components()
{
    if (m_data.type() != QVariant::Double)
        throw std::runtime_error("DoubleEditor::update_components() -> Error. Wrong variant type");
 
    m_doubleEditor->setValue(m_data.value<double>());
}