#include <QtGui/QApplication>
#include <QtGui/QPlainTextEdit>
#include <QtGui/QLabel>
#include <QtGui/QPainter>

class TestLabel : public QLabel
{
public:
    TestLabel(QWidget* parent)
        : QLabel(parent) {}

protected:
    virtual void paintEvent(QPaintEvent* event)
    {
        QLabel::paintEvent(event);

        QPainter painter(this);
        painter.setPen(QPen(Qt::red));
        painter.drawRect(rect().adjusted(0,0,-1,-1));
    }
};

///////////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    ///////////////////////////////////////////////////////////
    QWidget* ref = new QWidget(NULL, Qt::Window | Qt::FramelessWindowHint);

    QString japan;
    for (uint32 ch = 0; ch < 6; ++ch) japan += QChar(0x30F0 + ch);

    QFont font;
    font.setStyleHint(QFont::System);

    // bug is also reproduced with Arial font 
    //QFont font("Arial", 12, 72, false);

    QLabel *label = new TestLabel(ref);
    label->setText( "Reference");
    label->move(10,10);
    label->setFont(font);

    label = new TestLabel(ref);
    label->setText("Refer " + japan); // bug isn't reproduced
    label->move(100,10);
    label->setFont(font);
    label->resize(140, 16);

    label = new TestLabel(ref);
    label->setText("Refer " + japan + "<span />"); // the bug is reproduced
    label->move(250,10);
    label->setFont(font);
    label->resize(140, 16);

    ///////////////////////////////////////////////////////////
    QPlainTextEdit* edit = new QPlainTextEdit("Edit Line 1\nEdit Line 2\nEdit Line 3", ref);
    edit->setGeometry(QRect(10,30,80,140));
    edit->setReadOnly(true);
    edit->setFont(font);

    edit = new QPlainTextEdit("Line " + japan + "\nLine "+ japan + "\nLine "+ japan, ref);
    edit->setGeometry(QRect(100,30,140,140));
    edit->setReadOnly(true);
    edit->setFont(font);

    ref->setAutoFillBackground(true);
    ref->setGeometry(QRect(300,200,400,340));
    ref->show();

    return app.exec();
}