Resource.php

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<?php
abstract class Zend_Pdf_Resource
{
    protected $_objectFactory;

    protected $_resource;

    public function __construct($resource)
    {
        if ($resource instanceof Zend_Pdf_Element_Object) {
            $this->_objectFactory = $resource->getFactory();
            $this->_resource      = $resource;

            return;
        }

        #require_once 'Zend/Pdf/ElementFactory.php';

        $this->_objectFactory = Zend_Pdf_ElementFactory::createFactory(1);
        if ($resource instanceof Zend_Pdf_Element) {
            $this->_resource  = $this->_objectFactory->newObject($resource);
        } else {
            $this->_resource  = $this->_objectFactory->newStreamObject($resource);
        }
    }

    public function __clone()
    {
//        $factory = Zend_Pdf_ElementFactory::createFactory(1);
//        $processed = array();
//
//        // Clone dictionary object.
//        // Do it explicitly to prevent sharing resource attributes between different
//        // results of clone operation (other resources are still shared)
//        $dictionary = new Zend_Pdf_Element_Dictionary();
//        foreach ($this->_pageDictionary->getKeys() as $key) {
//         $dictionary->$key = $this->_pageDictionary->$key->makeClone($factory->getFactory(),
//                                                                     $processed,
//                                                                     Zend_Pdf_Element::CLONE_MODE_SKIP_PAGES);
//        }
//
//        $this->_pageDictionary = $factory->newObject($dictionary);
//        $this->_objectFactory  = $factory;
//        $this->_attached       = false;
//        $this->_style          = null;
//        $this->_font           = null;
    }

    public function cloneResource($factory, &$processed)
    {
//        // Clone dictionary object.
//        // Do it explicitly to prevent sharing page attributes between different
//        // results of clonePage() operation (other resources are still shared)
//        $dictionary = new Zend_Pdf_Element_Dictionary();
//        foreach ($this->_pageDictionary->getKeys() as $key) {
//            $dictionary->$key = $this->_pageDictionary->$key->makeClone($factory->getFactory(),
//                                                                        $processed,
//                                                                        Zend_Pdf_Element::CLONE_MODE_SKIP_PAGES);
//        }
//
//        $clonedPage = new Zend_Pdf_Page($factory->newObject($dictionary), $factory);
//        $clonedPage->_attached = false;
//
//        return $clonedPage;
    }

    public function getResource()
    {
        return $this->_resource;
    }

    public function getFactory()
    {
        return $this->_objectFactory;
    }
}