#include <QApplication>
#include <QFontDatabase>
#include <QFontMetrics>
#include <QRect>
#include <QStringList>
#include <QDebug>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    int index = 0;

    QTime time;

    QFontDatabase database;
    foreach (QString family, database.families())
    {
        foreach (QString style, database.styles(family))
        {
            foreach (int points, database.smoothSizes(family, style))
            {
                index++;
                QFontMetrics fontMetrics(database.font(family, style, points));
                QRect requiredSpace = fontMetrics.boundingRect("Test Test");
            }
        }
    }

    qDebug() << "nb iterartion: " << index;

    return a.exec();
}