Меню уровней на QML и C++

#ifndef MODULEPARTMENUELEMENT_H
#define MODULEPARTMENUELEMENT_H

#include <QQuickItem>
#include <QSGGeometryNode>
#include <QSGFlatColorMaterial>

class ModulePartMenuElement : public QQuickItem
{
    Q_OBJECT
    Q_PROPERTY(bool isActive READ isActive WRITE setIsActive NOTIFY isActiveChanged)
    Q_PROPERTY(QColor activeColor READ activeColor WRITE setActiveColor NOTIFY activeColorChanged)
    Q_PROPERTY(QColor nonActiveColor READ nonActiveColor WRITE setNonActiveColor NOTIFY nonActiveColorChanged)
public:
    ModulePartMenuElement(QQuickItem *parent = 0);


    bool isActive() const;
    QColor activeColor() const;
    QColor nonActiveColor() const;

protected:
    virtual QSGNode * updatePaintNode(QSGNode *node, UpdatePaintNodeData *updatePaintNodeData) override;

signals:
    void isActiveChanged(bool isActive);
    void activeColorChanged(QColor activeColor);
    void nonActiveColorChanged(QColor nonActiveColor);

public slots:
    void setIsActive(const bool isActive);
    void setActiveColor(const QColor activeColor);
    void setNonActiveColor(const QColor nonActiveColor);

private:
    //состояние элемента
    bool _isActive;
    //фон если активен
    QColor _activeColor;
    //фон если не активен
    QColor _nonActiveColor;
    
};

#endif // MODULEPARTMENUELEMENT_H

#include "modulepartmenuelement.h"

ModulePartMenuElement::ModulePartMenuElement(QQuickItem *parent) : QQuickItem(parent)
{
    

    setFlag(QQuickItem::ItemHasContents, true);
}

bool ModulePartMenuElement::isActive() const
{
    return _isActive;
}

QColor ModulePartMenuElement::activeColor() const
{
    return _activeColor;
}

QColor ModulePartMenuElement::nonActiveColor() const
{
    return _nonActiveColor;
}

QSGNode *ModulePartMenuElement::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *updatePaintNodeData)
{
    Q_UNUSED(updatePaintNodeData)
    QSGGeometryNode *node = static_cast<QSGGeometryNode*>(oldNode);
    
    if (!node)
    {
        node = new QSGGeometryNode();
        node->setFlag(QSGNode::OwnsMaterial, true);
        node->setFlag(QSGNode::OwnsGeometry, true);
    }
        const QRectF rect = boundingRect();
        //геометрия
        QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 3);

        QSGGeometry::Point2D *points = geometry->vertexDataAsPoint2D();
        points[0].x = rect.left();
        points[0].y = rect.top();
        points[1].x = rect.left() + rect.width() / 2.0;
        points[1].y = rect.bottom();
        points[2].x = rect.right();
        points[2].y = rect.top();

        node->setGeometry(geometry);
        QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
        if (_isActive)
        {
            material->setColor(_activeColor);

        }
        else
        {
            material->setColor(_nonActiveColor);
        }
        node->setMaterial(material);

        return node;

    
}

void ModulePartMenuElement::setIsActive(const bool isActive)
{
    if (_isActive == isActive)
        return;
    _isActive = isActive;
    emit isActiveChanged(isActive);
}

void ModulePartMenuElement::setActiveColor(const QColor activeColor)
{
    if (_activeColor == activeColor)
        return;
    _activeColor = activeColor;
    emit activeColorChanged(activeColor);
}

void ModulePartMenuElement::setNonActiveColor(const QColor nonActiveColor)
{
    if (_nonActiveColor == nonActiveColor)
        return;
    _nonActiveColor = nonActiveColor;
    emit nonActiveColorChanged(nonActiveColor);
}