@SuppressWarnings("unused")
private void toggle() {
QWidget current = panels.currentWidget();
QWidget next = panels.widget((panels.currentIndex() + 1) % 2);
// make sure the layout is up to date...
next.setGeometry(current.geometry());
QPixmap startpm = QPixmap.grabWidget(current);
QPixmap endpm = QPixmap.grabWidget(next);
Overlay overlay = new Overlay(startpm, endpm);
overlay.setTransition(transition);
overlay.setParent(this);
overlay.setGeometry(panels.geometry());
overlay.show();
panels.setCurrentIndex((panels.currentIndex() + 1) % 2);
}
