qt5base-lts/examples/widgets/itemviews/spinboxdelegate/delegate.cpp

// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

/*
    delegate.cpp

    A delegate that allows the user to change integer values from the model
    using a spin box widget.
*/

#include "delegate.h"

#include <QSpinBox>

//! [0]
SpinBoxDelegate::SpinBoxDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{
}
//! [0]

//! [1]
QWidget *SpinBoxDelegate::createEditor(QWidget *parent,
                                       const QStyleOptionViewItem &/* option */,
                                       const QModelIndex &/* index */) const
{
    QSpinBox *editor = new QSpinBox(parent);
    editor->setFrame(false);
    editor->setMinimum(0);
    editor->setMaximum(100);

    return editor;
}
//! [1]

//! [2]
void SpinBoxDelegate::setEditorData(QWidget *editor,
                                    const QModelIndex &index) const
{
    int value = index.model()->data(index, Qt::EditRole).toInt();

    QSpinBox *spinBox = static_cast<QSpinBox*>(editor);
    spinBox->setValue(value);
}
//! [2]

//! [3]
void SpinBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                   const QModelIndex &index) const
{
    QSpinBox *spinBox = static_cast<QSpinBox*>(editor);
    spinBox->interpretText();
    int value = spinBox->value();

    model->setData(index, value, Qt::EditRole);
}
//! [3]

//! [4]
void SpinBoxDelegate::updateEditorGeometry(QWidget *editor,
                                           const QStyleOptionViewItem &option,
                                           const QModelIndex &/* index */) const
{
    editor->setGeometry(option.rect);
}
//! [4]