Russian Qt Forum

#include <QGraphicsWidget>
#include <QString>

class QGraphicsLabel : public QGraphicsWidget
{
    QString         ftext;
    Qt::Alignment   ftextAligment;
protected:
    void    changeEvent(QEvent *event);
    QRectF  boundingRect()    const;
    void    paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
public:
    QGraphicsLabel(QGraphicsItem * parent = 0, Qt::WindowFlags wFlags = 0);
    QString text() const;
    void    setText(QString Text);
    Qt::Alignment   textAligment() const;
    void    setTextAligment(Qt::Alignment TextAligment);
};

#include    <QPainter>
#include    "qgraphicslabel.h"

QGraphicsLabel::QGraphicsLabel(QGraphicsItem * parent, Qt::WindowFlags wFlags)
    :QGraphicsWidget(parent,wFlags)
{
    ftextAligment = Qt::AlignLeft|Qt::AlignVCenter;
}

QString QGraphicsLabel::text() const
{
    return  ftext;
}

void    QGraphicsLabel::setText(QString Text)
{
    if(ftext!=Text)
    {
        ftext = Text;
        QFontMetrics    metrics(font());
        QSize           _size = metrics.size(ftextAligment,ftext);
        resize(_size.width(),_size.height());
        update();
    }
}

Qt::Alignment   QGraphicsLabel::textAligment() const
{
    return  ftextAligment;
}

void    QGraphicsLabel::setTextAligment(Qt::Alignment TextAligment)
{
    if(ftextAligment!=TextAligment)
    {
        ftextAligment = TextAligment;
        update();
    }
}

void    QGraphicsLabel::changeEvent(QEvent *event)
{
    switch(event->type())
    {
    case    QEvent::Resize:
        break;
    case    QEvent::FontChange:
        update();
        break;
    default:
        return;
    }
}

QRectF  QGraphicsLabel::boundingRect()    const
{
    return  QRectF(0,0,size().width(),size().height());
}

void    QGraphicsLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    painter->setPen(Qt::white);
    painter->drawText(rect(),ftextAligment,ftext);
}