BxDolImageResize::_applyWatermark PHP Method

    function _applyWatermark($sSrcImage, $sDstImage, $sWtrImage, $iTransparency, $sPosition = 'bottom-right', $sPositionOffsetX = 0, $sPositionOffsetY = 0, $sScaleFactor = 0.2)
    {
        $this->_sError = '';
        try {
            $oImageOrig = $this->_oManager->make($sSrcImage);
            $oImageOrig->insert($this->_oManager->make($sWtrImage)->resize(round($oImageOrig->width() * $sScaleFactor), round($oImageOrig->height() * $sScaleFactor), function ($constraint) {
                $constraint->aspectRatio();
                $constraint->upsize();
            })->opacity($iTransparency), $sPosition, $sPositionOffsetX, $sPositionOffsetY)->save($sDstImage ? $sDstImage : $sSrcImage, $this->_iJpegQuality);
            chmod($sDstImage ? $sDstImage : $sSrcImage, BX_DOL_FILE_RIGHTS);
        } catch (Exception $e) {
            $this->_sError = $e->getMessage();
            return IMAGE_ERROR_WRONG_TYPE;
        }
        return IMAGE_ERROR_SUCCESS;
    }