intnumericdelegate.h

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#ifndef INTNUMERICDELEGATE_H
#define INTNUMERICDELEGATE_H
 
#include <QItemDelegate>
#include <QSpinBox>
 
class IntNumericDelegate : public QItemDelegate {
    Q_OBJECT
 
private:
    int maxValue;
    int minValue;
    int stepSize;
    int value;
 
public:
    IntNumericDelegate(QWidget *parent = nullptr, int maxValue = 1000000000, int minValue = -1000000000, int stepSize = 1, int value = 0)
        : QItemDelegate(parent), maxValue(maxValue), minValue(minValue), stepSize(stepSize), value(value) {}
 
    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override {
        QSpinBox *editor = new QSpinBox(parent);
        editor->setMaximum(maxValue);
        editor->setMinimum(minValue);
        editor->setSingleStep(stepSize);
        editor->setValue(value);
        return editor;
    }
 
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override {
        QSpinBox *spinBox = qobject_cast<QSpinBox *>(editor);
        int value = spinBox->value();
        model->setData(index, value, Qt::EditRole);
    }
};
 
#endif // INTNUMERICDELEGATE_H