/**
* Object constructor.
*
* If resource is not a \Zend\PDF\InternalType\AbstractTypeObject object,
* then stream object with specified value is generated.
*
* @param \Zend\PDF\InternalType\AbstractTypeObject|string $resource
*/
public function __construct($resource)
{
$this->_objectFactory = ObjectFactory\ObjectFactory::createFactory(1);
if ($resource instanceof InternalType\AbstractTypeObject) {
$this->_resource = $this->_objectFactory->newObject($resource);
} else {
$this->_resource = $this->_objectFactory->newStreamObject($resource);
}
}
/**
* Sets the document-level Metadata (mast be valid XMP document)
*
* @param string $metadata
*/
public function setMetadata($metadata)
{
$metadataObject = $this->_objFactory->newStreamObject($metadata);
$metadataObject->dictionary->Type = new InternalType\NameObject('Metadata');
$metadataObject->dictionary->Subtype = new InternalType\NameObject('XML');
$this->_trailer->Root->Metadata = $metadataObject;
$this->_trailer->Root->touch();
}
/**
* Generate new \Zend\PDF\InternalType\StreamObject
*
* @todo Reusage of the freed object. It's not a support of new feature, but only improvement.
*
* @param mixed $objectValue
* @return \Zend\PDF\InternalType\StreamObject
*/
public function newStreamObject($streamValue)
{
return $this->_factory->newStreamObject($streamValue);
}
/**
* Dump current drawing instructions into the content stream.
*
* @todo Don't forget to close all current graphics operations (like path drawing)
*
* @throws \Zend\PDF\Exception
*/
public function flush()
{
if ($this->_saveCount != 0) {
throw new Exception('Saved graphics state is not restored');
}
if ($this->_contents == '') {
return;
}
if ($this->_pageDictionary->Contents->getType() != InternalType\AbstractTypeObject::TYPE_ARRAY) {
/**
* It's a stream object.
* Prepare Contents page attribute for update.
*/
$this->_pageDictionary->touch();
$currentPageContents = $this->_pageDictionary->Contents;
$this->_pageDictionary->Contents = new InternalType\ArrayObject();
$this->_pageDictionary->Contents->items[] = $currentPageContents;
} else {
$this->_pageDictionary->Contents->touch();
}
if (!$this->_safeGS && count($this->_pageDictionary->Contents->items) != 0) {
/**
* Page already has some content which is not treated as safe.
*
* Add save/restore GS operators
*/
$this->_addProcSet('PDF');
$newContentsArray = new InternalType\ArrayObject();
$newContentsArray->items[] = $this->_objFactory->newStreamObject(" q\n");
foreach ($this->_pageDictionary->Contents->items as $contentStream) {
$newContentsArray->items[] = $contentStream;
}
$newContentsArray->items[] = $this->_objFactory->newStreamObject(" Q\n");
$this->_pageDictionary->touch();
$this->_pageDictionary->Contents = $newContentsArray;
$this->_safeGS = true;
}
$this->_pageDictionary->Contents->items[] = $this->_objFactory->newStreamObject($this->_contents);
$this->_contents = '';
}
