diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Pdf/Canvas.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Pdf/Canvas.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,182 @@
+<?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: Style.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+require_once 'Zend/Pdf/Canvas/Abstract.php';
+
+/**
+ * Canvas is an abstract rectangle drawing area which can be dropped into
+ * page object at specified place.
+ *
+ * @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_Canvas extends Zend_Pdf_Canvas_Abstract
+{
+    /**
+     * Canvas procedure sets.
+     *
+     * Allowed values: 'PDF', 'Text', 'ImageB', 'ImageC', 'ImageI'.
+     *
+     * @var array
+     */
+    protected $_procSet = array();
+
+    /**
+     * Canvas width expressed in default user space units (1/72 inch)
+     *
+     * @var float
+     */
+    protected $_width;
+
+    /**
+     * Canvas height expressed in default user space units (1/72 inch)
+     *
+     * @var float
+     */
+    protected $_height;
+
+    protected $_resources = array('Font'      => array(),
+                                  'XObject'   => array(),
+                                  'ExtGState' => array());
+
+    /**
+     * Object constructor
+     *
+     * @param float $width
+     * @param float $height
+     */
+    public function __construct($width, $height)
+    {
+        $this->_width  = $width;
+        $this->_height = $height;
+    }
+
+    /**
+     * Add procedure set to the canvas description
+     *
+     * @param string $procSetName
+     */
+    protected function _addProcSet($procSetName)
+    {
+        $this->_procset[$procSetName] = 1;
+    }
+
+    /**
+     * Attach resource to the canvas
+     *
+     * Method returns a name of the resource which can be used
+     * as a resource reference within drawing instructions stream
+     * Allowed types: 'ExtGState', 'ColorSpace', 'Pattern', 'Shading',
+     * 'XObject', 'Font', 'Properties'
+     *
+     * @param string $type
+     * @param Zend_Pdf_Resource $resource
+     * @return string
+     */
+    protected function _attachResource($type, Zend_Pdf_Resource $resource)
+    {
+        // Check, that resource is already attached to resource set.
+        $resObject = $resource->getResource();
+        foreach ($this->_resources[$type] as $resName => $collectedResObject) {
+            if ($collectedResObject === $resObject) {
+                return $resName;
+            }
+        }
+
+        $idCounter = 1;
+        do {
+            $newResName = $type[0] . $idCounter++;
+        } while (isset($this->_resources[$type][$newResName]));
+
+        $this->_resources[$type][$newResName] = $resObject;
+
+        return $newResName;
+    }
+
+    /**
+     * Returns dictionaries of used resources.
+     *
+     * Used for canvas implementations interoperability
+     *
+     * Structure of the returned array:
+     * array(
+     *   <resTypeName> => array(
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      ...
+     *                    ),
+     *   <resTypeName> => array(
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      <resName> => <Zend_Pdf_Resource object>,
+     *                      ...
+     *                    ),
+     *   ...
+     *   'ProcSet' => array()
+     * )
+     *
+     * where ProcSet array is a list of used procedure sets names (strings).
+     * Allowed procedure set names: 'PDF', 'Text', 'ImageB', 'ImageC', 'ImageI'
+     *
+     * @internal
+     * @return array
+     */
+    public function getResources()
+    {
+        $this->_resources['ProcSet'] = array_keys($this->_procSet);
+        return $this->_resources;
+    }
+
+    /**
+     * Get drawing instructions stream
+     *
+     * It has to be returned as a PDF stream object to make it reusable.
+     *
+     * @internal
+     * @returns Zend_Pdf_Resource_ContentStream
+     */
+    public function getContents()
+    {
+        /** @todo implementation */
+    }
+
+    /**
+     * Return the height of this page in points.
+     *
+     * @return float
+     */
+    public function getHeight()
+    {
+        return $this->_height;
+    }
+
+    /**
+     * Return the width of this page in points.
+     *
+     * @return float
+     */
+    public function getWidth()
+    {
+        return $this->_width;
+    }
+}