PHPOffice / PhpSpreadsheet

    /**

     * Read DggContainer record (Drawing Group Container).

     */

    private function readDggContainer()

    {

        $length = Xls::getInt4d($this->data, $this->pos + 4);

        $recordData = substr($this->data, $this->pos + 8, $length);

        // move stream pointer to next record

        $this->pos += 8 + $length;

        // record is a container, read contents

        $dggContainer = new DggContainer();

        $this->object->setDggContainer($dggContainer);

        $reader = new self($dggContainer);

        $reader->load($recordData);

    }

    /**

     * Read Dgg record (Drawing Group).

    /**

     * Read BstoreContainer record (Blip Store Container).

     */

    private function readBstoreContainer()

    {

        $length = Xls::getInt4d($this->data, $this->pos + 4);

        $recordData = substr($this->data, $this->pos + 8, $length);

        // move stream pointer to next record

        $this->pos += 8 + $length;

        // record is a container, read contents

        $bstoreContainer = new BstoreContainer();

        $this->object->setBstoreContainer($bstoreContainer);

        $reader = new self($bstoreContainer);

        $reader->load($recordData);

    }

    /**

     * Read BSE record.

    /**

     * Read DgContainer record (Drawing Container).

     */

    private function readDgContainer()

    {

        $length = Xls::getInt4d($this->data, $this->pos + 4);

        $recordData = substr($this->data, $this->pos + 8, $length);

        // move stream pointer to next record

        $this->pos += 8 + $length;

        // record is a container, read contents

        $dgContainer = new DgContainer();

        $this->object->setDgContainer($dgContainer);

        $reader = new self($dgContainer);

        $escher = $reader->load($recordData);

    }

    /**

     * Read Dg record (Drawing).

    /**

     * Read SpContainer record (Shape Container).

     */

    private function readSpContainer()

    {

        $length = Xls::getInt4d($this->data, $this->pos + 4);

        $recordData = substr($this->data, $this->pos + 8, $length);

        // add spContainer to spgrContainer

        $spContainer = new SpContainer();

        $this->object->addChild($spContainer);

        // move stream pointer to next record

        $this->pos += 8 + $length;

        // record is a container, read contents

        $reader = new self($spContainer);

        $escher = $reader->load($recordData);

    }

    /**

     * Read Spgr record (Shape Group).