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<?php
/**
* @package dompdf
* @link http://dompdf.github.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
/**
* Caching canvas implementation
*
* Each rendered page is serialized and stored in the {@link Page_Cache}.
* This is useful for static forms/pages that do not need to be re-rendered
* all the time.
*
* This class decorates normal CPDF_Adapters. It is currently completely
* experimental.
*
* @access private
* @package dompdf
*/
class Cached_PDF_Decorator extends CPDF_Adapter implements Canvas {
/**
* @var CPDF_Adapter
*/
protected $_pdf;
protected $_cache_id;
protected $_current_page_id;
protected $_fonts; // fonts used in this document
function __construct($paper = "letter", $orientation = "portrait", DOMPDF $dompdf) {
$this->_fonts = array();
}
/**
* Must be called after constructor
*
* @param int $cache_id
* @param CPDF_Adapter $pdf
*/
function init($cache_id, CPDF_Adapter $pdf) {
$this->_cache_id = $cache_id;
$this->_pdf = $pdf;
$this->_current_page_id = $this->_pdf->open_object();
}
//........................................................................
function get_cpdf() { return $this->_pdf->get_cpdf(); }
function open_object() { $this->_pdf->open_object(); }
function reopen_object($object) { $this->_pdf->reopen_object($object); }
function close_object() { $this->_pdf->close_object(); }
function add_object($object, $where = 'all') { $this->_pdf->add_object($object, $where); }
function serialize_object($id) { $this->_pdf->serialize_object($id); }
function reopen_serialized_object($obj) { $this->_pdf->reopen_serialized_object($obj); }
//........................................................................
function get_width() { return $this->_pdf->get_width(); }
function get_height() { return $this->_pdf->get_height(); }
function get_page_number() { return $this->_pdf->get_page_number(); }
function get_page_count() { return $this->_pdf->get_page_count(); }
function set_page_number($num) { $this->_pdf->set_page_number($num); }
function set_page_count($count) { $this->_pdf->set_page_count($count); }
function line($x1, $y1, $x2, $y2, $color, $width, $style = array()) {
$this->_pdf->line($x1, $y1, $x2, $y2, $color, $width, $style);
}
function rectangle($x1, $y1, $w, $h, $color, $width, $style = array()) {
$this->_pdf->rectangle($x1, $y1, $w, $h, $color, $width, $style);
}
function filled_rectangle($x1, $y1, $w, $h, $color) {
$this->_pdf->filled_rectangle($x1, $y1, $w, $h, $color);
}
function polygon($points, $color, $width = null, $style = array(), $fill = false) {
$this->_pdf->polygon($points, $color, $width, $style, $fill);
}
function circle($x, $y, $r1, $color, $width = null, $style = null, $fill = false) {
$this->_pdf->circle($x, $y, $r1, $color, $width, $style, $fill);
}
function image($img_url, $x, $y, $w, $h, $resolution = "normal") {
$this->_pdf->image($img_url, $x, $y, $w, $h, $resolution);
}
function text($x, $y, $text, $font, $size, $color = array(0,0,0), $word_space = 0.0, $char_space = 0.0, $angle = 0.0) {
$this->_fonts[$font] = true;
$this->_pdf->text($x, $y, $text, $font, $size, $color, $word_space, $char_space, $angle);
}
function page_text($x, $y, $text, $font, $size, $color = array(0,0,0), $word_space = 0.0, $char_space = 0.0, $angle = 0.0) {
// We want to remove this from cached pages since it may not be correct
$this->_pdf->close_object();
$this->_pdf->page_text($x, $y, $text, $font, $size, $color, $word_space, $char_space, $angle);
$this->_pdf->reopen_object($this->_current_page_id);
}
function page_script($script, $type = 'text/php') {
// We want to remove this from cached pages since it may not be correct
$this->_pdf->close_object();
$this->_pdf->page_script($script, $type);
$this->_pdf->reopen_object($this->_current_page_id);
}
function new_page() {
$this->_pdf->close_object();
// Add the object to the current page
$this->_pdf->add_object($this->_current_page_id, "add");
$this->_pdf->new_page();
Page_Cache::store_page($this->_cache_id,
$this->_pdf->get_page_number() - 1,
$this->_pdf->serialize_object($this->_current_page_id));
$this->_current_page_id = $this->_pdf->open_object();
return $this->_current_page_id;
}
function stream($filename, $options = null) {
// Store the last page in the page cache
if ( !is_null($this->_current_page_id) ) {
$this->_pdf->close_object();
$this->_pdf->add_object($this->_current_page_id, "add");
Page_Cache::store_page($this->_cache_id,
$this->_pdf->get_page_number(),
$this->_pdf->serialize_object($this->_current_page_id));
Page_Cache::store_fonts($this->_cache_id, $this->_fonts);
$this->_current_page_id = null;
}
$this->_pdf->stream($filename);
}
function output($options = null) {
// Store the last page in the page cache
if ( !is_null($this->_current_page_id) ) {
$this->_pdf->close_object();
$this->_pdf->add_object($this->_current_page_id, "add");
Page_Cache::store_page($this->_cache_id,
$this->_pdf->get_page_number(),
$this->_pdf->serialize_object($this->_current_page_id));
$this->_current_page_id = null;
}
return $this->_pdf->output();
}
function get_messages() { return $this->_pdf->get_messages(); }
}
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