Working with Graphics View Framework and QSvgItem

[claud84 0]

Can someone please help me figure this one out.
I am working with the Graphics View Framework and
the end goal is to load an svg drawing re-scale it to fit the view port and rotate it around the center of the view port while also maintaining it's center aligned with the view port's center.

I have this setup:

MyQWidget::MyQWidget(QWidget *parent)
    : QWidget{parent}
{
	//... 	

	QObject::connect(action1, &QAction::triggered, [&]() {
		svgItem->setTransformOriginPoint(svgItem->boundingRect().center());
		svgItem->setRotation(rotation+=45);
		centerSVGItem();
		scene->update();
	});
	
	//...
}


void MyQWidget::resizeEvent(QResizeEvent *event)
{
	scene->setSceneRect(view->viewport()->rect());
	
	qreal scaleX =  qBound(0.1,  static_cast<qreal>(view->viewport()->rect().width()) / svgItem->boundingRect().width(),  0.9);
	qreal scaleY =  qBound(0.1,  static_cast<qreal>(view->viewport()->rect().height()) / svgItem->boundingRect().height(),  0.9);
	
	centerPoint = scene->sceneRect().center();
	svgItem->setScale(qMin(scaleX,scaleY));
	centerSVGItem();	
}

void MyQWidget::centerSVGItem()
{
	svgItem->setTransformOriginPoint(svgItem->boundingRect().topLeft());
	QPointF svgCenter = svgItem->boundingRect().center() * svgItem->scale();
	QPointF sceneCenter = scene->sceneRect().center();
	QPointF offset = sceneCenter - svgCenter;
	svgItem->setPos(offset);
}

[claud84 0]

So I asked chat GPT and it gave some suggestion that seem to work:

void centerSVGItem()
{
	QRectF transformedBoundingRect = svgItem->sceneTransform().mapRect(svgItem->boundingRect());
	QPointF svgCenter = transformedBoundingRect.center();
	QPointF sceneCenter = scene->sceneRect().center();
	QPointF offset = sceneCenter - svgCenter;
	svgItem->setPos(svgItem->pos() + offset);
};

//...

QObject::connect(action1, &QAction::triggered, [&]() {
        QRectF transformedBoundingRect = svgItem->sceneTransform().mapRect(svgItem->boundingRect());
        svgItem->setTransformOriginPoint(transformedBoundingRect.center());
        svgItem->setRotation(rotation += 45);
        centerSVGItem();
        scene->update();
    });

If you have any other suggestions or ideas please feel free to comment.