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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file GUI/View/ParEdit/CustomEditors.cpp
//! @brief Implements classes CustomEditor, ComboPropertyEditor, ParSpinBoxEditor.
//!
//! @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/View/ParEdit/CustomEditors.h"
#include "Base/Util/Assert.h"
#include "Fit/Param/RealLimits.h"
#include "GUI/Model/Descriptor/ComboProperty.h"
#include "GUI/View/Base/CustomEventFilters.h"
#include "GUI/View/ParEdit/ParSpinBox.h"
#include <QBoxLayout>
#include <cmath>
namespace {
//! Single step for ParSpinBoxEditor.
double singleStep(int decimals)
{
// For item with decimals=3 (i.e. 0.001) single step will be 0.1
return 1. / std::pow(10., decimals - 1);
}
} // namespace
// ************************************************************************************************
// class CustomEditor
// ************************************************************************************************
//! Sets the data from the model to editor.
void CustomEditor::setData(const QVariant& data)
{
m_data = data;
initEditor();
}
//! Inits editor widgets from m_data.
void CustomEditor::initEditor() {}
//! Saves the data from the editor and informs external delegates.
void CustomEditor::setDataIntern(const QVariant& data)
{
m_data = data;
dataChanged(m_data);
}
// ************************************************************************************************
// class ComboPropertyEditor
// ************************************************************************************************
ComboPropertyEditor::ComboPropertyEditor(QWidget* parent)
: CustomEditor(parent)
, m_box(new QComboBox)
{
setAutoFillBackground(true);
setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
auto* layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0);
layout->addWidget(m_box);
setConnected(true);
}
QSize ComboPropertyEditor::sizeHint() const
{
return m_box->sizeHint();
}
QSize ComboPropertyEditor::minimumSizeHint() const
{
return m_box->minimumSizeHint();
}
void ComboPropertyEditor::onIndexChanged(int index)
{
auto comboProperty = m_data.value<ComboProperty>();
if (comboProperty.currentIndex() != index) {
comboProperty.setCurrentIndex(index);
setDataIntern(QVariant::fromValue<ComboProperty>(comboProperty));
}
}
void ComboPropertyEditor::initEditor()
{
setConnected(false);
m_box->clear();
m_box->insertItems(0, internLabels());
m_box->setCurrentIndex(internIndex());
setConnected(true);
}
//! Returns list of labels for QComboBox
QStringList ComboPropertyEditor::internLabels()
{
if (!m_data.canConvert<ComboProperty>())
return {};
auto comboProperty = m_data.value<ComboProperty>();
return comboProperty.values();
}
//! Returns index for QComboBox.
int ComboPropertyEditor::internIndex()
{
if (!m_data.canConvert<ComboProperty>())
return 0;
auto comboProperty = m_data.value<ComboProperty>();
return comboProperty.currentIndex();
}
void ComboPropertyEditor::setConnected(bool isConnected)
{
if (isConnected)
connect(m_box, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
&ComboPropertyEditor::onIndexChanged, Qt::UniqueConnection);
else
disconnect(m_box, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
this, &ComboPropertyEditor::onIndexChanged);
}
// ************************************************************************************************
// class ParSpinBoxEditor
// ************************************************************************************************
ParSpinBoxEditor::ParSpinBoxEditor(QWidget* parent)
: CustomEditor(parent)
, m_double_editor(new ParSpinBox)
{
setAutoFillBackground(true);
setFocusPolicy(Qt::StrongFocus);
m_double_editor->setFocusPolicy(Qt::StrongFocus);
m_double_editor->setKeyboardTracking(false);
auto* layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0);
layout->addWidget(m_double_editor);
connect(m_double_editor, &ParSpinBox::valueChanged, [this] { onEditingFinished(); });
setFocusProxy(m_double_editor);
}
void ParSpinBoxEditor::setLimits(const RealLimits& limits)
{
m_double_editor->setMinimum(limits.hasLowerLimit() ? limits.min()
: std::numeric_limits<double>::lowest());
m_double_editor->setMaximum(limits.hasUpperLimit() ? limits.max()
: std::numeric_limits<double>::max());
}
void ParSpinBoxEditor::setDecimals(int decimals)
{
m_double_editor->setDecimals(decimals);
m_double_editor->setSingleStep(singleStep(decimals));
}
void ParSpinBoxEditor::setSingleStep(double step)
{
m_double_editor->setSingleStep(step);
}
void ParSpinBoxEditor::onEditingFinished()
{
double new_value = m_double_editor->value();
if (new_value != m_data.toDouble())
setDataIntern(QVariant::fromValue(new_value));
}
void ParSpinBoxEditor::initEditor()
{
ASSERT(m_data.type() == QVariant::Double);
QSignalBlocker b(m_double_editor); // just show value, not signal about its change
m_double_editor->setValue(m_data.toDouble());
}
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