Файл: library/Zend/Pdf/Element/Object.php
Строк: 301
<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Object.php 22844 2010-08-16 15:38:53Z alexander $
*/
/** Zend_Pdf_Element */
require_once 'Zend/Pdf/Element.php';
/**
* PDF file 'indirect object' element implementation
*
* @category Zend
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_Element_Object extends Zend_Pdf_Element
{
/**
* Object value
*
* @var Zend_Pdf_Element
*/
protected $_value;
/**
* Object number within PDF file
*
* @var integer
*/
protected $_objNum;
/**
* Generation number
*
* @var integer
*/
protected $_genNum;
/**
* Reference to the factory.
*
* @var Zend_Pdf_ElementFactory
*/
protected $_factory;
/**
* Object constructor
*
* @param Zend_Pdf_Element $val
* @param integer $objNum
* @param integer $genNum
* @param Zend_Pdf_ElementFactory $factory
* @throws Zend_Pdf_Exception
*/
public function __construct(Zend_Pdf_Element $val, $objNum, $genNum, Zend_Pdf_ElementFactory $factory)
{
if ($val instanceof self) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Object number must not be an instance of Zend_Pdf_Element_Object.');
}
if ( !(is_integer($objNum) && $objNum > 0) ) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Object number must be positive integer.');
}
if ( !(is_integer($genNum) && $genNum >= 0) ) {
require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('Generation number must be non-negative integer.');
}
$this->_value = $val;
$this->_objNum = $objNum;
$this->_genNum = $genNum;
$this->_factory = $factory;
$this->setParentObject($this);
$factory->registerObject($this, $objNum . ' ' . $genNum);
}
/**
* Check, that object is generated by specified factory
*
* @return Zend_Pdf_ElementFactory
*/
public function getFactory()
{
return $this->_factory;
}
/**
* Return type of the element.
*
* @return integer
*/
public function getType()
{
return $this->_value->getType();
}
/**
* Get object number
*
* @return integer
*/
public function getObjNum()
{
return $this->_objNum;
}
/**
* Get generation number
*
* @return integer
*/
public function getGenNum()
{
return $this->_genNum;
}
/**
* Return reference to the object
*
* @param Zend_Pdf_Factory $factory
* @return string
*/
public function toString($factory = null)
{
if ($factory === null) {
$shift = 0;
} else {
$shift = $factory->getEnumerationShift($this->_factory);
}
return $this->_objNum + $shift . ' ' . $this->_genNum . ' R';
}
/**
* Dump object to a string to save within PDF file.
*
* $factory parameter defines operation context.
*
* @param Zend_Pdf_ElementFactory $factory
* @return string
*/
public function dump(Zend_Pdf_ElementFactory $factory)
{
$shift = $factory->getEnumerationShift($this->_factory);
return $this->_objNum + $shift . " " . $this->_genNum . " obj n"
. $this->_value->toString($factory) . "n"
. "endobjn";
}
/**
* Get handler
*
* @param string $property
* @return mixed
*/
public function __get($property)
{
return $this->_value->$property;
}
/**
* Set handler
*
* @param string $property
* @param mixed $value
*/
public function __set($property, $value)
{
$this->_value->$property = $value;
}
/**
* Call handler
*
* @param string $method
* @param array $args
* @return mixed
*/
public function __call($method, $args)
{
return call_user_func_array(array($this->_value, $method), $args);
}
/**
* Detach PDF object from the factory (if applicable), clone it and attach to new factory.
*
* @param Zend_Pdf_ElementFactory $factory The factory to attach
* @param array &$processed List of already processed indirect objects, used to avoid objects duplication
* @param integer $mode Cloning mode (defines filter for objects cloning)
* @returns Zend_Pdf_Element
*/
public function makeClone(Zend_Pdf_ElementFactory $factory, array &$processed, $mode)
{
$id = spl_object_hash($this);
if (isset($processed[$id])) {
// Do nothing if object is already processed
// return it
return $processed[$id];
}
// Create obect with null value and register it in $processed container
$processed[$id] = $clonedObject = $factory->newObject(new Zend_Pdf_Element_Null());
// Pecursively process actual data
$clonedObject->_value = $this->_value->makeClone($factory, $processed, $mode);
if ($clonedObject->_value instanceof Zend_Pdf_Element_Null) {
// Do not store null objects within $processed container since it may be filtered
// by $mode parameter but used in some future pass
unset($processed[$id]);
// Return direct null object
return $clonedObject->_value;
}
return $clonedObject;
}
/**
* Mark object as modified, to include it into new PDF file segment
*/
public function touch()
{
$this->_factory->markAsModified($this);
}
/**
* Return object, which can be used to identify object and its references identity
*
* @return Zend_Pdf_Element_Object
*/
public function getObject()
{
return $this;
}
/**
* Clean up resources, used by object
*/
public function cleanUp()
{
$this->_value = null;
}
/**
* Convert PDF element to PHP type.
*
* @return mixed
*/
public function toPhp()
{
return $this->_value->toPhp();
}
}