numericdelegate.h

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#ifndef NUMERICDELEGATE_H
#define NUMERICDELEGATE_H
 
#include <QItemDelegate>
#include <QDoubleSpinBox>
 
class NumericDelegate : public QItemDelegate {
    Q_OBJECT
 
private:
    double maxValue;
    double minValue;
    int decimals;
    double stepSize;
    double value;
 
public:
    NumericDelegate(QWidget *parent = nullptr, double maxValue = 1000000000.0, double minValue = -1000000000.0,
                    int decimals = 3, double stepSize = 0.1, double value = 0)
        : QItemDelegate(parent), maxValue(maxValue), minValue(minValue), decimals(decimals), stepSize(stepSize), value(value) {}
 
    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override {
        QDoubleSpinBox *editor = new QDoubleSpinBox(parent);
        editor->setMaximum(maxValue);
        editor->setMinimum(minValue);
        editor->setDecimals(decimals);
        editor->setSingleStep(stepSize);
        editor->setValue(value);
        return editor;
    }
 
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override {
        QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox *>(editor);
        spinBox->interpretText();
        double value = spinBox->value();
        model->setData(index, value, Qt::EditRole);
    }
};
 
#endif // NUMERICDELEGATE_H