src/PhpPresentation/Writer/PowerPoint2007/Relationships.php
<?php
/**
* This file is part of PHPPresentation - A pure PHP library for reading and writing
* presentations documents.
*
* PHPPresentation is free software distributed under the terms of the GNU Lesser
* General Public License version 3 as published by the Free Software Foundation.
*
* For the full copyright and license information, please read the LICENSE
* file that was distributed with this source code. For the full list of
* contributors, visit https://github.com/PHPOffice/PHPPresentation/contributors.
*
* @see https://github.com/PHPOffice/PHPPresentation
*
* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
*/
declare(strict_types=1);
namespace PhpOffice\PhpPresentation\Writer\PowerPoint2007;
use PhpOffice\Common\Adapter\Zip\ZipInterface;
use PhpOffice\Common\XMLWriter;
use PhpOffice\PhpPresentation\Shape\Comment;
use PhpOffice\PhpPresentation\Shape\Comment\Author;
class Relationships extends AbstractDecoratorWriter
{
/**
* Add relationships to ZIP file.
*/
public function render(): ZipInterface
{
$this->getZip()->addFromString('_rels/.rels', $this->writeRelationships());
$this->getZip()->addFromString('ppt/_rels/presentation.xml.rels', $this->writePresentationRelationships());
return $this->getZip();
}
/**
* Write relationships to XML format.
*
* @return string XML Output
*/
protected function writeRelationships(): string
{
// Create XML writer
$objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);
// XML header
$objWriter->startDocument('1.0', 'UTF-8', 'yes');
// Relationships
$objWriter->startElement('Relationships');
$objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/package/2006/relationships');
// Relationship ppt/presentation.xml
$this->writeRelationship($objWriter, 1, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument', 'ppt/presentation.xml');
// Relationship docProps/core.xml
$this->writeRelationship($objWriter, 2, 'http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties', 'docProps/core.xml');
// Relationship docProps/app.xml
$this->writeRelationship($objWriter, 3, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties', 'docProps/app.xml');
// Relationship docProps/custom.xml
$this->writeRelationship($objWriter, 4, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/custom-properties', 'docProps/custom.xml');
$idxRelation = 5;
// Relationship docProps/thumbnail.jpeg
$thumnbail = $this->getPresentation()->getPresentationProperties()->getThumbnail();
if ($thumnbail) {
$gdImage = imagecreatefromstring($thumnbail);
if ($gdImage) {
imagedestroy($gdImage);
// Relationship docProps/thumbnail.jpeg
$this->writeRelationship($objWriter, $idxRelation, 'http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail', 'docProps/thumbnail.jpeg');
// $idxRelation++;
}
}
$objWriter->endElement();
// Return
return $objWriter->getData();
}
/**
* Write presentation relationships to XML format.
*
* @return string XML Output
*/
protected function writePresentationRelationships(): string
{
// Create XML writer
$objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);
// XML header
$objWriter->startDocument('1.0', 'UTF-8', 'yes');
// Relationships
$objWriter->startElement('Relationships');
$objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/package/2006/relationships');
// Relation id
$relationId = 1;
foreach ($this->getPresentation()->getAllMasterSlides() as $oMasterSlide) {
// Relationship slideMasters/slideMasterX.xml
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideMaster', 'slideMasters/slideMaster' . $oMasterSlide->getRelsIndex() . '.xml');
}
// Add slide theme (only one!)
// Relationship theme/theme1.xml
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme', 'theme/theme1.xml');
// Relationships with slides
$slideCount = $this->getPresentation()->getSlideCount();
for ($i = 0; $i < $slideCount; ++$i) {
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide', 'slides/slide' . ($i + 1) . '.xml');
}
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/presProps', 'presProps.xml');
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/viewProps', 'viewProps.xml');
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/tableStyles', 'tableStyles.xml');
// Comments Authors
foreach ($this->getPresentation()->getAllSlides() as $oSlide) {
foreach ($oSlide->getShapeCollection() as $oShape) {
if (!($oShape instanceof Comment)) {
continue;
}
$oAuthor = $oShape->getAuthor();
if (!($oAuthor instanceof Author)) {
continue;
}
$this->writeRelationship($objWriter, $relationId++, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/commentAuthors', 'commentAuthors.xml');
break 2;
}
}
$objWriter->endElement();
// Return
return $objWriter->getData();
}
}