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#include <QtGui>

class RotationWidget : public QWidget
{
    Q_OBJECT

public:
    RotationWidget()
    {
        QVBoxLayout *layout = new QVBoxLayout(this);

        label = new QLabel;

        QHBoxLayout *blayout = new QHBoxLayout;
        blayout->setSpacing(0);

        QRadioButton *button1 = new QRadioButton("Portrait");
        QRadioButton *button2 = new QRadioButton("Auto");
        QRadioButton *button3 = new QRadioButton("Landscape");

        button2->toggle();

        connect(button1, SIGNAL(clicked()), this, SLOT(setPortrait()));
        connect(button2, SIGNAL(clicked()), this, SLOT(setAutoRotation()));
        connect(button3, SIGNAL(clicked()), this, SLOT(setLandscape()));

        blayout->addWidget(button1);
        blayout->addWidget(button2);
        blayout->addWidget(button3);

        layout->addWidget(label);
        layout->addLayout(blayout);

// ![3]
        connect(QApplication::desktop(), SIGNAL(resized(int)), this, SLOT(orientationChanged()));
// ![3]

        setAutoRotation();

        // initialize the label according to the current rotation
        orientationChanged();
    }

public slots:
    void setLandscape()
    {
// ![0]
        setAttribute(Qt::WA_Maemo5LandscapeOrientation, true);
// ![0]
    }

    void setPortrait()
    {
// ![1]
        setAttribute(Qt::WA_Maemo5PortraitOrientation, true);
// ![1]
    }

    void setAutoRotation()
    {
// ![2]
        setAttribute(Qt::WA_Maemo5AutoOrientation, true);
// ![2]
    }

// ![4]
    void orientationChanged()
    {
        QRect screenGeometry = QApplication::desktop()->screenGeometry();
        if (screenGeometry.width() > screenGeometry.height())
            label->setText("<p align=\"center\">In Landscape Mode</p>");
        else
            label->setText("<p align=\"center\">In Portrait Mode</p>");
    }
// ![4]

private:
    QLabel *label;
};

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

    RotationWidget w;
    w.show();

    return app.exec();
}

#include "main.moc"