How not inherit class QGraphicsTextItem and implement class UTextItem? - qt

Question

How not inherit class QGraphicsTextItem and implement class UTextItem ,in Qt.
I don't need code similar to below
#include <QGraphicsTextItem>
class UTextItem: public QGraphicsTextItem
{
public:
UTextItem(QGraphicsItem *parent = nullptr);
}
I need code similar to below，I need code similar to below, and not the text drawn by the drawText function, because the drawn string will lose detail when scaled.
#include <QGraphicsItem>
class UTextItem: public QGraphicsItem
{
public:
UTextItem(QGraphicsItem *parent = nullptr);
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
}
Because my current requirement is to have a TextItem that can be deformed, flipped horizontally and vertically, and the scaling of drawText will be distorted, so I can't use this method.

Answer 1

By reading the source code, I found the scaling problem solution myself.
void UTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
QFont font;
font.setPixelSize(0.75 * qMin(boundingRect().width(), boundingRect().height()));
painter->save();
painter->setFont(font);
painter->drawText(boundingRect(), Qt::AlignCenter, "hello world");
painter->restore();
}