Axis Handling

 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #ifndef CUSTOMFORMATTER_H
 #define CUSTOMFORMATTER_H

 #include <QtCore/qdatetime.h>
 #include <QtGraphs/qvalue3daxisformatter.h>
 #include <QtQml/qqmlregistration.h>

 class CustomFormatter : public QValue3DAxisFormatter
 {
     Q_OBJECT
     QML_ELEMENT

     Q_PROPERTY(QDate originDate READ originDate WRITE setOriginDate NOTIFY originDateChanged)
     Q_PROPERTY(QString selectionFormat READ selectionFormat WRITE setSelectionFormat NOTIFY
                    selectionFormatChanged)
 public:
     explicit CustomFormatter(QObject *parent = 0);
     ~CustomFormatter() override;

     QValue3DAxisFormatter *createNewInstance() const override;
     void populateCopy(QValue3DAxisFormatter &copy) override;
     void recalculate() override;
     QString stringForValue(qreal value, const QString &format) override;

     QDate originDate() const;
     QString selectionFormat() const;

 public Q_SLOTS:
     void setOriginDate(const QDate &date);
     void setSelectionFormat(const QString &format);

 Q_SIGNALS:
     void originDateChanged(const QDate &date);
     void selectionFormatChanged(const QString &format);

 private:
     Q_DISABLE_COPY(CustomFormatter)

     QDateTime valueToDateTime(qreal value) const;

     QDate m_originDate;
     QString m_selectionFormat;
 };

 #endif