spinbox-delegate.cpp

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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QStyledItemDelegate>
#include <QSpinBox>
 
//! [declaration]
class SpinBoxDelegate : public QStyledItemDelegate
{
    Q_OBJECT
 
public:
    SpinBoxDelegate(QObject *parent = nullptr);
 
    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                          const QModelIndex &index) const override;
 
    void setEditorData(QWidget *editor, const QModelIndex &index) const override;
    void setModelData(QWidget *editor, QAbstractItemModel *model,
                      const QModelIndex &index) const override;
 
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const override;
};
//! [declaration]
 
//! [constructor]
SpinBoxDelegate::SpinBoxDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{
}
//! [constructor]
 
//! [createEditor]
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;
}
//! [createEditor]
 
//! [setEditorData]
void SpinBoxDelegate::setEditorData(QWidget *editor,
                                    const QModelIndex &index) const
{
    int value = index.data(Qt::EditRole).toInt();
 
    QSpinBox *spinBox = static_cast<QSpinBox*>(editor);
    spinBox->setValue(value);
}
//! [setEditorData]
 
//! [setModelData]
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);
}
//! [setModelData]
 
//! [updateEditorGeometry]
void SpinBoxDelegate::updateEditorGeometry(QWidget *editor,
                                           const QStyleOptionViewItem &option,
                                           const QModelIndex &/* index */) const
{
    editor->setGeometry(option.rect);
}
//! [updateEditorGeometry]