def METHOD_NAME(self):
    line_style_combo_width = self._layout.itemAt(0).sizeHint().width()
    thickness_spinner_width = self._layout.itemAt(1).sizeHint().width()
    marker_combo_width = self._layout.itemAt(2).sizeHint().width()
    size_spinner_width = self._layout.itemAt(3).sizeHint().width()
    return (
        line_style_combo_width,
        thickness_spinner_width,
        marker_combo_width,
        size_spinner_width,
    )