936 lines
26 KiB
PHP
936 lines
26 KiB
PHP
<?php
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/**
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* @package dompdf
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* @link http://www.dompdf.com/
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* @author Benj Carson <benjcarson@digitaljunkies.ca>
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* @author Fabien Ménager <fabien.menager@gmail.com>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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* @version $Id: dompdf.cls.php 468 2012-02-05 10:51:40Z fabien.menager $
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*/
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/**
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* DOMPDF - PHP5 HTML to PDF renderer
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*
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* DOMPDF loads HTML and does its best to render it as a PDF. It gets its
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* name from the new DomDocument PHP5 extension. Source HTML is first
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* parsed by a DomDocument object. DOMPDF takes the resulting DOM tree and
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* attaches a {@link Frame} object to each node. {@link Frame} objects store
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* positioning and layout information and each has a reference to a {@link
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* Style} object.
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*
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* Style information is loaded and parsed (see {@link Stylesheet}) and is
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* applied to the frames in the tree by using XPath. CSS selectors are
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* converted into XPath queries, and the computed {@link Style} objects are
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* applied to the {@link Frame}s.
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*
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* {@link Frame}s are then decorated (in the design pattern sense of the
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* word) based on their CSS display property ({@link
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* http://www.w3.org/TR/CSS21/visuren.html#propdef-display}).
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* Frame_Decorators augment the basic {@link Frame} class by adding
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* additional properties and methods specific to the particular type of
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* {@link Frame}. For example, in the CSS layout model, block frames
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* (display: block;) contain line boxes that are usually filled with text or
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* other inline frames. The Block_Frame_Decorator therefore adds a $lines
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* property as well as methods to add {@link Frame}s to lines and to add
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* additional lines. {@link Frame}s also are attached to specific
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* Positioner and {@link Frame_Reflower} objects that contain the
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* positioining and layout algorithm for a specific type of frame,
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* respectively. This is an application of the Strategy pattern.
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*
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* Layout, or reflow, proceeds recursively (post-order) starting at the root
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* of the document. Space constraints (containing block width & height) are
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* pushed down, and resolved positions and sizes bubble up. Thus, every
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* {@link Frame} in the document tree is traversed once (except for tables
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* which use a two-pass layout algorithm). If you are interested in the
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* details, see the reflow() method of the Reflower classes.
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*
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* Rendering is relatively straightforward once layout is complete. {@link
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* Frame}s are rendered using an adapted {@link Cpdf} class, originally
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* written by Wayne Munro, http://www.ros.co.nz/pdf/. (Some performance
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* related changes have been made to the original {@link Cpdf} class, and
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* the {@link CPDF_Adapter} class provides a simple, stateless interface to
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* PDF generation.) PDFLib support has now also been added, via the {@link
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* PDFLib_Adapter}.
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*
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*
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* @package dompdf
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*/
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class DOMPDF {
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/**
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* DomDocument representing the HTML document
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*
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* @var DomDocument
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*/
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protected $_xml;
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/**
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* Frame_Tree derived from the DOM tree
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*
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* @var Frame_Tree
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*/
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protected $_tree;
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/**
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* Stylesheet for the document
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*
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* @var Stylesheet
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*/
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protected $_css;
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/**
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* Actual PDF renderer
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*
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* @var Canvas
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*/
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protected $_pdf;
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/**
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* Desired paper size ('letter', 'legal', 'A4', etc.)
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*
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* @var string
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*/
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protected $_paper_size;
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/**
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* Paper orientation ('portrait' or 'landscape')
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*
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* @var string
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*/
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protected $_paper_orientation;
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/**
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* Callbacks on new page and new element
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*
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* @var array
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*/
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protected $_callbacks;
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/**
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* Experimental caching capability
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*
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* @var string
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*/
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private $_cache_id;
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/**
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* Base hostname
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*
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* Used for relative paths/urls
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* @var string
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*/
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protected $_base_host;
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/**
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* Absolute base path
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*
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* Used for relative paths/urls
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* @var string
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*/
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protected $_base_path;
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/**
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* Protcol used to request file (file://, http://, etc)
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*
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* @var string
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*/
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protected $_protocol;
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/**
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* HTTP context created with stream_context_create()
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* Will be used for file_get_contents
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*
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* @var resource
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*/
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protected $_http_context;
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/**
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* Timestamp of the script start time
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*
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* @var int
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*/
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private $_start_time = null;
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/**
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* @var string The system's locale
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*/
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private $_system_locale = null;
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/**
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* @var bool Tells if the system's locale is the C standard one
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*/
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private $_locale_standard = false;
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/**
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* @var string The default view of the PDF in the viewer
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*/
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private $_default_view = "Fit";
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/**
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* @var array The default view options of the PDF in the viewer
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*/
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private $_default_view_options = array();
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/**
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* @var bool Tells wether the DOM document is in quirksmode (experimental)
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*/
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private $_quirksmode = false;
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public static $native_fonts = array("courier", "courier-bold", "courier-oblique", "courier-boldoblique",
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"helvetica", "helvetica-bold", "helvetica-oblique", "helvetica-boldoblique",
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"times-roman", "times-bold", "times-italic", "times-bolditalic",
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"symbol", "zapfdinbats");
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/**
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* Class constructor
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*/
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function __construct() {
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$this->_locale_standard = sprintf('%.1f', 1.0) == '1.0';
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$this->save_locale();
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$this->_messages = array();
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$this->_css = new Stylesheet($this);
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$this->_pdf = null;
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$this->_paper_size = "letter";
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$this->_paper_orientation = "portrait";
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$this->_base_protocol = "";
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$this->_base_host = "";
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$this->_base_path = "";
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$this->_http_context = null;
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$this->_callbacks = array();
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$this->_cache_id = null;
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$this->restore_locale();
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}
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/**
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* Class destructor
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*/
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function __destruct() {
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clear_object($this);
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}
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/**
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* Save the system's locale configuration and
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* set the right value for numeric formatting
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*/
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private function save_locale() {
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if ( $this->_locale_standard ) return;
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$this->_system_locale = setlocale(LC_NUMERIC, "C");
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}
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/**
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* Restore the system's locale configuration
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*/
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private function restore_locale() {
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if ( $this->_locale_standard ) return;
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setlocale(LC_NUMERIC, $this->_system_locale);
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}
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/**
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* Returns the underlying {@link Frame_Tree} object
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*
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* @return Frame_Tree
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*/
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function get_tree() { return $this->_tree; }
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/**
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* Sets the protocol to use
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* FIXME validate these
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*
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* @param string $proto
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*/
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function set_protocol($proto) { $this->_protocol = $proto; }
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/**
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* Sets the base hostname
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*
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* @param string $host
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*/
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function set_host($host) { $this->_base_host = $host; }
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/**
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* Sets the base path
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*
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* @param string $path
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*/
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function set_base_path($path) { $this->_base_path = $path; }
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/**
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* Sets the HTTP context
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*
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* @param resource $http_context
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*/
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function set_http_context($http_context) { $this->_http_context = $http_context; }
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/**
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* Sets the default view
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*
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* @param string $default_view
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*/
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function set_default_view($default_view, $options) {
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$this->_default_view = $default_view;
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$this->_default_view_options = $options;
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}
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/**
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* Returns the protocol in use
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*
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* @return string
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*/
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function get_protocol() { return $this->_protocol; }
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/**
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* Returns the base hostname
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*
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* @return string
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*/
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function get_host() { return $this->_base_host; }
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/**
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* Returns the base path
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*
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* @return string
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*/
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function get_base_path() { return $this->_base_path; }
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/**
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* Returns the HTTP context
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*
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* @return resource
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*/
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function get_http_context() { return $this->_http_context; }
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/**
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* Return the underlying Canvas instance (e.g. CPDF_Adapter, GD_Adapter)
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*
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* @return Canvas
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*/
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function get_canvas() { return $this->_pdf; }
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/**
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* Returns the callbacks array
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*
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* @return array
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*/
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function get_callbacks() { return $this->_callbacks; }
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/**
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* Returns the stylesheet
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*
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* @return Stylesheet
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*/
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function get_css() { return $this->_css; }
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/**
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* Loads an HTML file
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*
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* Parse errors are stored in the global array _dompdf_warnings.
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*
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* @param string $file a filename or url to load
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*/
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function load_html_file($file) {
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$this->save_locale();
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// Store parsing warnings as messages (this is to prevent output to the
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// browser if the html is ugly and the dom extension complains,
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// preventing the pdf from being streamed.)
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if ( !$this->_protocol && !$this->_base_host && !$this->_base_path )
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list($this->_protocol, $this->_base_host, $this->_base_path) = explode_url($file);
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if ( !DOMPDF_ENABLE_REMOTE &&
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($this->_protocol != "" && $this->_protocol !== "file://" ) )
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throw new DOMPDF_Exception("Remote file requested, but DOMPDF_ENABLE_REMOTE is false.");
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if ($this->_protocol == "" || $this->_protocol === "file://") {
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$realfile = realpath($file);
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if ( !$file )
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throw new DOMPDF_Exception("File '$file' not found.");
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if ( strpos($realfile, DOMPDF_CHROOT) !== 0 )
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throw new DOMPDF_Exception("Permission denied on $file.");
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// Exclude dot files (e.g. .htaccess)
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if ( substr(basename($realfile),0,1) === "." )
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throw new DOMPDF_Exception("Permission denied on $file.");
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$file = $realfile;
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}
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$contents = file_get_contents($file, null, $this->_http_context);
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$encoding = null;
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// See http://the-stickman.com/web-development/php/getting-http-response-headers-when-using-file_get_contents/
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if ( isset($http_response_header) ) {
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foreach($http_response_header as $_header) {
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if ( preg_match("@Content-Type:\s*[\w/]+;\s*?charset=([^\s]+)@i", $_header, $matches) ) {
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$encoding = strtoupper($matches[1]);
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break;
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}
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}
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}
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$this->restore_locale();
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$this->load_html($contents, $encoding);
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}
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/**
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* Loads an HTML string
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*
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* Parse errors are stored in the global array _dompdf_warnings.
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*
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* @todo use the $encoding variable
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* @param string $str HTML text to load
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*/
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function load_html($str, $encoding = null) {
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$this->save_locale();
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// FIXME: Determine character encoding, switch to UTF8, update meta tag. Need better http/file stream encoding detection, currently relies on text or meta tag.
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mb_detect_order('auto');
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if (mb_detect_encoding($str) !== 'UTF-8') {
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$metatags = array(
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'@<meta\s+http-equiv="Content-Type"\s+content="(?:[\w/]+)(?:;\s*?charset=([^\s"]+))?@i',
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'@<meta\s+content="(?:[\w/]+)(?:;\s*?charset=([^\s"]+))"?\s+http-equiv="Content-Type"@i',
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'@<meta [^>]*charset\s*=\s*["\']?\s*([^"\' ]+)@i',
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);
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foreach($metatags as $metatag) {
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if (preg_match($metatag, $str, $matches)) break;
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}
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if (mb_detect_encoding($str) == '') {
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if (isset($matches[1])) {
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$encoding = strtoupper($matches[1]);
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} else {
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$encoding = 'UTF-8';
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}
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} else {
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if (isset($matches[1])) {
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$encoding = strtoupper($matches[1]);
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} else {
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$encoding = 'auto';
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}
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}
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if ($encoding !== 'UTF-8') {
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$str = mb_convert_encoding($str, 'UTF-8', $encoding);
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}
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if (isset($matches[1])) {
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$str = preg_replace('/charset=([^\s"]+)/i', 'charset=UTF-8', $str);
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} else {
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$str = str_replace('<head>', '<head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">', $str);
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}
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} else {
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$encoding = 'UTF-8';
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}
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// remove BOM mark from UTF-8, it's treated as document text by DOMDocument
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// FIXME: roll this into the encoding detection using UTF-8/16/32 BOM (http://us2.php.net/manual/en/function.mb-detect-encoding.php#91051)?
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if (substr($str, 0, 3) == chr(0xEF).chr(0xBB).chr(0xBF)) {
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$str = substr($str, 3);
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}
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// Parse embedded php, first-pass
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if ( DOMPDF_ENABLE_PHP ) {
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ob_start();
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eval("?" . ">$str");
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$str = ob_get_clean();
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}
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// if the document contains non utf-8 with a utf-8 meta tag chars and was
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// detected as utf-8 by mbstring, problems could happen.
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// http://devzone.zend.com/article/8855
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if ( $encoding !== 'UTF-8' ) {
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$re = '/<meta ([^>]*)((?:charset=[^"\' ]+)([^>]*)|(?:charset=["\'][^"\' ]+["\']))([^>]*)>/i';
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$str = preg_replace($re, '<meta $1$3>', $str);
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}
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// Store parsing warnings as messages
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set_error_handler("record_warnings");
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// @todo Take the quirksmode into account
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// http://hsivonen.iki.fi/doctype/
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// https://developer.mozilla.org/en/mozilla's_quirks_mode
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$quirksmode = false;
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if ( DOMPDF_ENABLE_HTML5PARSER ) {
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$tokenizer = new HTML5_Tokenizer($str);
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$tokenizer->parse();
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$doc = $tokenizer->save();
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// Remove #text children nodes in nodes that shouldn't have
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$tag_names = array("html", "table", "tbody", "thead", "tfoot", "tr");
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foreach($tag_names as $tag_name) {
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$nodes = $doc->getElementsByTagName($tag_name);
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foreach($nodes as $node) {
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self::remove_text_nodes($node);
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}
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}
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$quirksmode = ($tokenizer->getTree()->getQuirksMode() > HTML5_TreeBuilder::NO_QUIRKS);
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}
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else {
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$doc = new DOMDocument();
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$doc->preserveWhiteSpace = true;
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$doc->loadHTML($str);
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// If some text is before the doctype of before the <html> tag, we are in quirksmode
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if ( preg_match("/^(.+)<(!doctype|html)/i", ltrim($str), $matches) ) {
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$quirksmode = true;
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}
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else {
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// HTML5 <!DOCTYPE html>
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if ( !$doc->doctype->publicId && !$doc->doctype->systemId ) {
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$quirksmode = false;
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}
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// not XHTML
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if ( !preg_match("/xhtml/i", $doc->doctype->publicId) ) {
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$quirksmode = true;
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}
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}
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}
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$this->_xml = $doc;
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$this->_quirksmode = $quirksmode;
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$this->_tree = new Frame_Tree($this->_xml);
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restore_error_handler();
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$this->restore_locale();
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}
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static function remove_text_nodes(DOMNode $node) {
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$children = array();
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for ($i = 0; $i < $node->childNodes->length; $i++) {
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$child = $node->childNodes->item($i);
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if ( $child->nodeName === "#text" ) {
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$children[] = $child;
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}
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}
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foreach($children as $child) {
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$node->removeChild($child);
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}
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}
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|
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/**
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* Builds the {@link Frame_Tree}, loads any CSS and applies the styles to
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* the {@link Frame_Tree}
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*/
|
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protected function _process_html() {
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$this->save_locale();
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$this->_tree->build_tree();
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$this->_css->load_css_file(Stylesheet::DEFAULT_STYLESHEET, Stylesheet::ORIG_UA);
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$acceptedmedia = Stylesheet::$ACCEPTED_GENERIC_MEDIA_TYPES;
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if ( defined("DOMPDF_DEFAULT_MEDIA_TYPE") ) {
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$acceptedmedia[] = DOMPDF_DEFAULT_MEDIA_TYPE;
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} else {
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$acceptedmedia[] = Stylesheet::$ACCEPTED_DEFAULT_MEDIA_TYPE;
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}
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// load <link rel="STYLESHEET" ... /> tags
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$links = $this->_xml->getElementsByTagName("link");
|
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foreach ($links as $link) {
|
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if ( mb_strtolower($link->getAttribute("rel")) === "stylesheet" ||
|
|
mb_strtolower($link->getAttribute("type")) === "text/css" ) {
|
|
//Check if the css file is for an accepted media type
|
|
//media not given then always valid
|
|
$formedialist = preg_split("/[\s\n,]/", $link->getAttribute("media"),-1, PREG_SPLIT_NO_EMPTY);
|
|
if ( count($formedialist) > 0 ) {
|
|
$accept = false;
|
|
foreach ( $formedialist as $type ) {
|
|
if ( in_array(mb_strtolower(trim($type)), $acceptedmedia) ) {
|
|
$accept = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!$accept) {
|
|
//found at least one mediatype, but none of the accepted ones
|
|
//Skip this css file.
|
|
continue;
|
|
}
|
|
}
|
|
|
|
$url = $link->getAttribute("href");
|
|
$url = build_url($this->_protocol, $this->_base_host, $this->_base_path, $url);
|
|
|
|
$this->_css->load_css_file($url, Stylesheet::ORIG_AUTHOR);
|
|
}
|
|
|
|
}
|
|
|
|
// Set the base path of the Stylesheet to that of the file being processed
|
|
$this->_css->set_protocol($this->_protocol);
|
|
$this->_css->set_host($this->_base_host);
|
|
$this->_css->set_base_path($this->_base_path);
|
|
|
|
// load <style> tags
|
|
$styles = $this->_xml->getElementsByTagName("style");
|
|
foreach ($styles as $style) {
|
|
|
|
// Accept all <style> tags by default (note this is contrary to W3C
|
|
// HTML 4.0 spec:
|
|
// http://www.w3.org/TR/REC-html40/present/styles.html#adef-media
|
|
// which states that the default media type is 'screen'
|
|
if ( $style->hasAttributes() &&
|
|
($media = $style->getAttribute("media")) &&
|
|
!in_array($media, $acceptedmedia) )
|
|
continue;
|
|
|
|
$css = "";
|
|
if ( $style->hasChildNodes() ) {
|
|
|
|
$child = $style->firstChild;
|
|
while ( $child ) {
|
|
$css .= $child->nodeValue; // Handle <style><!-- blah --></style>
|
|
$child = $child->nextSibling;
|
|
}
|
|
|
|
} else
|
|
$css = $style->nodeValue;
|
|
|
|
$this->_css->load_css($css);
|
|
}
|
|
|
|
$this->restore_locale();
|
|
}
|
|
|
|
/**
|
|
* Sets the paper size & orientation
|
|
*
|
|
* @param string $size 'letter', 'legal', 'A4', etc. {@link CPDF_Adapter::$PAPER_SIZES}
|
|
* @param string $orientation 'portrait' or 'landscape'
|
|
*/
|
|
function set_paper($size, $orientation = "portrait") {
|
|
$this->_paper_size = $size;
|
|
$this->_paper_orientation = $orientation;
|
|
}
|
|
|
|
/**
|
|
* Enable experimental caching capability
|
|
* @access private
|
|
*/
|
|
function enable_caching($cache_id) {
|
|
$this->_cache_id = $cache_id;
|
|
}
|
|
|
|
/**
|
|
* Sets callbacks for events like rendering of pages and elements.
|
|
* The callbacks array contains arrays with 'event' set to 'begin_page',
|
|
* 'end_page', 'begin_frame', or 'end_frame' and 'f' set to a function or
|
|
* object plus method to be called.
|
|
*
|
|
* The function 'f' must take an array as argument, which contains info
|
|
* about the event.
|
|
*
|
|
* @param array $callbacks the set of callbacks to set
|
|
*/
|
|
function set_callbacks($callbacks) {
|
|
if (is_array($callbacks)) {
|
|
$this->_callbacks = array();
|
|
foreach ($callbacks as $c) {
|
|
if (is_array($c) && isset($c['event']) && isset($c['f'])) {
|
|
$event = $c['event'];
|
|
$f = $c['f'];
|
|
if (is_callable($f) && is_string($event)) {
|
|
$this->_callbacks[$event][] = $f;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the quirks mode
|
|
*
|
|
* @return boolean true if quirks mode is active
|
|
*/
|
|
function get_quirksmode(){
|
|
return $this->_quirksmode;
|
|
}
|
|
|
|
function parse_default_view($value) {
|
|
$valid = array("XYZ", "Fit", "FitH", "FitV", "FitR", "FitB", "FitBH", "FitBV");
|
|
|
|
$options = preg_split("/\s*,\s*/", trim($value));
|
|
$default_view = array_shift($options);
|
|
|
|
if ( !in_array($default_view, $valid) ) {
|
|
return false;
|
|
}
|
|
|
|
$this->set_default_view($default_view, $options);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Renders the HTML to PDF
|
|
*/
|
|
function render() {
|
|
$this->save_locale();
|
|
|
|
if ( DOMPDF_LOG_OUTPUT_FILE ) {
|
|
if ( !file_exists(DOMPDF_LOG_OUTPUT_FILE) && is_writable(dirname(DOMPDF_LOG_OUTPUT_FILE)) ) {
|
|
touch(DOMPDF_LOG_OUTPUT_FILE);
|
|
}
|
|
|
|
$this->_start_time = microtime(true);
|
|
ob_start();
|
|
}
|
|
|
|
//enable_mem_profile();
|
|
|
|
$this->_process_html();
|
|
|
|
$this->_css->apply_styles($this->_tree);
|
|
|
|
// @page style rules : size, margins
|
|
$page_styles = $this->_css->get_page_styles();
|
|
|
|
$base_page_style = $page_styles["base"];
|
|
unset($page_styles["base"]);
|
|
|
|
foreach($page_styles as $_page_style) {
|
|
$_page_style->inherit($base_page_style);
|
|
}
|
|
|
|
if ( is_array($base_page_style->size) ) {
|
|
$this->set_paper(array(0, 0, $base_page_style->size[0], $base_page_style->size[1]));
|
|
}
|
|
|
|
$this->_pdf = Canvas_Factory::get_instance($this->_paper_size, $this->_paper_orientation);
|
|
Font_Metrics::init($this->_pdf);
|
|
|
|
if (DOMPDF_ENABLE_FONTSUBSETTING && $this->_pdf instanceof CPDF_Adapter) {
|
|
foreach ($this->_tree->get_frames() as $frame) {
|
|
$style = $frame->get_style();
|
|
$node = $frame->get_node();
|
|
|
|
// Handle text nodes
|
|
if ( $node->nodeName === "#text" ) {
|
|
$this->_pdf->register_string_subset($style->font_family, $node->nodeValue);
|
|
continue;
|
|
}
|
|
|
|
// Handle generated content (list items)
|
|
if ( $style->display === "list-item" ) {
|
|
$chars = List_Bullet_Renderer::get_counter_chars($style->list_style_type);
|
|
$this->_pdf->register_string_subset($style->font_family, $chars);
|
|
continue;
|
|
}
|
|
|
|
// TODO Handle other generated content (pseudo elements)
|
|
}
|
|
}
|
|
|
|
$root = null;
|
|
|
|
foreach ($this->_tree->get_frames() as $frame) {
|
|
// Set up the root frame
|
|
if ( is_null($root) ) {
|
|
$root = Frame_Factory::decorate_root( $this->_tree->get_root(), $this );
|
|
continue;
|
|
}
|
|
|
|
// Create the appropriate decorators, reflowers & positioners.
|
|
$deco = Frame_Factory::decorate_frame($frame, $this);
|
|
$deco->set_root($root);
|
|
|
|
// FIXME: handle generated content
|
|
if ( $frame->get_style()->display === "list-item" ) {
|
|
// Insert a list-bullet frame
|
|
$node = $this->_xml->createElement("bullet"); // arbitrary choice
|
|
$b_f = new Frame($node);
|
|
|
|
$parent_node = $frame->get_parent()->get_node();
|
|
|
|
if ( !$parent_node->hasAttribute("dompdf-children-count") ) {
|
|
$xpath = new DOMXPath($this->_xml);
|
|
$count = $xpath->query("li", $parent_node)->length;
|
|
$parent_node->setAttribute("dompdf-children-count", $count);
|
|
}
|
|
|
|
if ( !$parent_node->hasAttribute("dompdf-counter") ) {
|
|
$index = ($parent_node->hasAttribute("start") ? $parent_node->getAttribute("start")-1 : 0);
|
|
}
|
|
else {
|
|
$index = $parent_node->getAttribute("dompdf-counter");
|
|
}
|
|
|
|
$index++;
|
|
$parent_node->setAttribute("dompdf-counter", $index);
|
|
|
|
$node->setAttribute("dompdf-counter", $index);
|
|
$style = $this->_css->create_style();
|
|
$style->display = "-dompdf-list-bullet";
|
|
$style->inherit($frame->get_style());
|
|
$b_f->set_style($style);
|
|
|
|
$deco->prepend_child( Frame_Factory::decorate_frame($b_f, $this) );
|
|
}
|
|
|
|
}
|
|
|
|
// Add meta information
|
|
$title = $this->_xml->getElementsByTagName("title");
|
|
if ( $title->length ) {
|
|
$this->_pdf->add_info("Title", trim($title->item(0)->nodeValue));
|
|
}
|
|
|
|
$metas = $this->_xml->getElementsByTagName("meta");
|
|
$labels = array(
|
|
"author" => "Author",
|
|
"keywords" => "Keywords",
|
|
"description" => "Subject",
|
|
);
|
|
foreach($metas as $meta) {
|
|
$name = mb_strtolower($meta->getAttribute("name"));
|
|
$value = trim($meta->getAttribute("content"));
|
|
|
|
if ( isset($labels[$name]) ) {
|
|
$this->_pdf->add_info($labels[$name], $value);
|
|
continue;
|
|
}
|
|
|
|
if ( $name === "dompdf.view" && $this->parse_default_view($value) ) {
|
|
$this->_pdf->set_default_view($this->_default_view, $this->_default_view_options);
|
|
}
|
|
}
|
|
|
|
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
|
|
$root->set_renderer(new Renderer($this));
|
|
|
|
// This is where the magic happens:
|
|
$root->reflow();
|
|
|
|
// Clean up cached images
|
|
Image_Cache::clear();
|
|
|
|
global $_dompdf_warnings, $_dompdf_show_warnings;
|
|
if ( $_dompdf_show_warnings ) {
|
|
echo '<b>DOMPDF Warnings</b><br><pre>';
|
|
foreach ($_dompdf_warnings as $msg)
|
|
echo $msg . "\n";
|
|
echo $this->get_canvas()->get_cpdf()->messages;
|
|
echo '</pre>';
|
|
flush();
|
|
}
|
|
|
|
$this->restore_locale();
|
|
}
|
|
|
|
/**
|
|
* Add meta information to the PDF after rendering
|
|
*/
|
|
function add_info($label, $value) {
|
|
if (!is_null($this->_pdf))
|
|
$this->_pdf->add_info($label, $value);
|
|
}
|
|
|
|
/**
|
|
* Writes the output buffer in the log file
|
|
* @return void
|
|
*/
|
|
private function write_log() {
|
|
if ( !DOMPDF_LOG_OUTPUT_FILE || !is_writable(DOMPDF_LOG_OUTPUT_FILE) ) return;
|
|
|
|
$frames = Frame::$ID_COUNTER;
|
|
$memory = DOMPDF_memory_usage();
|
|
$memory = number_format($memory/1024);
|
|
$time = number_format((microtime(true) - $this->_start_time) * 1000, 2);
|
|
|
|
$out =
|
|
"<span style='color: #000'>{$frames} frames</span>\t".
|
|
"<span style='color: #900'>{$memory} KB</span>\t".
|
|
"<span style='color: #090'>{$time} ms</span>\t".
|
|
"<span style='color: #009' title='Quirksmode'>".
|
|
($this->_quirksmode ? "<span style='color: #c00'>ON</span>" : "<span style='color: #0c0'>OFF</span>").
|
|
"</span><br />";
|
|
|
|
$out .= ob_get_clean();
|
|
file_put_contents(DOMPDF_LOG_OUTPUT_FILE, $out);
|
|
}
|
|
|
|
/**
|
|
* Streams the PDF to the client
|
|
*
|
|
* The file will open a download dialog by default. The options
|
|
* parameter controls the output. Accepted options are:
|
|
*
|
|
* 'Accept-Ranges' => 1 or 0 - if this is not set to 1, then this
|
|
* header is not included, off by default this header seems to
|
|
* have caused some problems despite the fact that it is supposed
|
|
* to solve them, so I am leaving it off by default.
|
|
*
|
|
* 'compress' = > 1 or 0 - apply content stream compression, this is
|
|
* on (1) by default
|
|
*
|
|
* 'Attachment' => 1 or 0 - if 1, force the browser to open a
|
|
* download dialog, on (1) by default
|
|
*
|
|
* @param string $filename the name of the streamed file
|
|
* @param array $options header options (see above)
|
|
*/
|
|
function stream($filename, $options = null) {
|
|
$this->save_locale();
|
|
|
|
$this->write_log();
|
|
|
|
if (!is_null($this->_pdf))
|
|
$this->_pdf->stream($filename, $options);
|
|
|
|
$this->restore_locale();
|
|
}
|
|
|
|
/**
|
|
* Returns the PDF as a string
|
|
*
|
|
* The file will open a download dialog by default. The options
|
|
* parameter controls the output. Accepted options are:
|
|
*
|
|
*
|
|
* 'compress' = > 1 or 0 - apply content stream compression, this is
|
|
* on (1) by default
|
|
*
|
|
*
|
|
* @param array $options options (see above)
|
|
* @return string
|
|
*/
|
|
function output($options = null) {
|
|
$this->save_locale();
|
|
|
|
$this->write_log();
|
|
|
|
if ( is_null($this->_pdf) )
|
|
return null;
|
|
|
|
$output = $this->_pdf->output( $options );
|
|
|
|
$this->restore_locale();
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Returns the underlying HTML document as a string
|
|
*
|
|
* @return string
|
|
*/
|
|
function output_html() {
|
|
return $this->_xml->saveHTML();
|
|
}
|
|
}
|