/**
* Object constructor.
*
* If resource is not a \ZendPdf\InternalType\AbstractTypeObject object,
* then stream object with specified value is generated.
*
* @param \ZendPdf\InternalType\AbstractTypeObject|string $resource
*/
public function __construct($resource)
{
$this->_objectFactory = ObjectFactory::createFactory(1);
if ($resource instanceof InternalType\AbstractTypeObject) {
$this->_resource = $this->_objectFactory->newObject($resource);
} else {
$this->_resource = $this->_objectFactory->newStreamObject($resource);
}
}
/**
* Dump current drawing instructions into the content stream.
*
* @todo Don't forget to close all current graphics operations (like path drawing)
*
* @throws \ZendPdf\Exception\ExceptionInterface
*/
public function flush()
{
if ($this->_saveCount != 0) {
throw new Exception\LogicException('Saved graphics state is not restored');
}
if ($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 = '';
}
