/**
* Attach resource to the page
*
* @param string $type
* @param \ZendPdf\Resource\AbstractResource $resource
* @return string
*/
protected function _attachResource($type, Resource\AbstractResource $resource)
{
// Check that Resources dictionary contains appropriate resource set
if ($this->_pageDictionary->Resources->{$type} === null) {
$this->_pageDictionary->Resources->touch();
$this->_pageDictionary->Resources->{$type} = new InternalType\DictionaryObject();
} else {
$this->_pageDictionary->Resources->{$type}->touch();
}
// Check, that resource is already attached to resource set.
$resObject = $resource->getResource();
foreach ($this->_pageDictionary->Resources->{$type}->getKeys() as $ResID) {
if ($this->_pageDictionary->Resources->{$type}->{$ResID} === $resObject) {
return $ResID;
}
}
$idCounter = 1;
do {
$newResName = $type[0] . $idCounter++;
} while ($this->_pageDictionary->Resources->{$type}->{$newResName} !== null);
$this->_pageDictionary->Resources->{$type}->{$newResName} = $resObject;
$this->_objFactory->attach($resource->getFactory());
return $newResName;
}
/**
* Prepare page to be rendered into PDF.
*
* @todo Don't forget to close all current graphics operations (like path drawing)
*
* @param \ZendPdf\ObjectFactory $objFactory
* @throws \ZendPdf\Exception\ExceptionInterface
*/
public function render(ObjectFactory $objFactory)
{
$this->flush();
if ($objFactory === $this->_objFactory) {
// Page is already attached to the document.
return;
}
if ($this->_attached) {
throw new Exception\LogicException('Page is attached to other document. Use clone $page to get it context free.');
} else {
$objFactory->attach($this->_objFactory);
}
}
