在phpExcel的页眉或页脚中，是否可以将文本置于图像下方?

基于phpexcel_library/1.7.4/manual.html我可以在图像下面插入文本，但是有办法把文本放在图片下面吗?

$workbook = new PHPExcel();
$objDrawing = new PHPExcel_Worksheet_HeaderFooterDrawing();
$objDrawing->setName('Footer Logo');
$objDrawing->setPath("footer_logo.png");
$objDrawing->setHeight(100);
$workbook->getActiveSheet()
    ->getHeaderFooter()
    ->addImage($objDrawing, PHPExcel_Worksheet_HeaderFooter::IMAGE_FOOTER_CENTER);
$workbook->getActiveSheet()
    ->getHeaderFooter()
    ->setOddFooter('&G&CVisible text behind the transparent image.');
$workbook->getActiveSheet()
    ->getHeaderFooter()
    ->setEvenFooter('&G&CVisible text behind the transparent image.');