Файл: billing/_rootinc/dompdf/include/page_frame_reflower.cls.php
Строк: 151
<?php
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* File: $RCSfile: page_frame_reflower.cls.php,v $
* Created on: 2004-06-16
*
* Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library in the file LICENSE.LGPL; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* Alternatively, you may distribute this software under the terms of the
* PHP License, version 3.0 or later. A copy of this license should have
* been distributed with this file in the file LICENSE.PHP . If this is not
* the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
*
* The latest version of DOMPDF might be available at:
* http://www.digitaljunkies.ca/dompdf
*
* @link http://www.digitaljunkies.ca/dompdf
* @copyright 2004 Benj Carson
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @package dompdf
* @version 0.5.1
*/
/* $Id: page_frame_reflower.cls.php 186 2009-10-19 22:42:06Z eclecticgeek@gmail.com $ */
/**
* Reflows pages
*
* @access private
* @package dompdf
*/
class Page_Frame_Reflower extends Frame_Reflower {
/**
* Cache of the callbacks array
*
* @var array
*/
private $_callbacks;
/**
* Cache of the canvas
*
* @var Canvas
*/
private $_canvas;
function __construct(Page_Frame_Decorator $frame) { parent::__construct($frame); }
//........................................................................
function reflow() {
$style = $this->_frame->get_style();
// Paged layout:
// http://www.w3.org/TR/CSS21/page.html
// Pages are only concerned with margins
$cb = $this->_frame->get_containing_block();
$left = $style->length_in_pt($style->margin_left, $cb["w"]);
$right = $style->length_in_pt($style->margin_right, $cb["w"]);
$top = $style->length_in_pt($style->margin_top, $cb["w"]);
$bottom = $style->length_in_pt($style->margin_bottom, $cb["w"]);
$content_x = $cb["x"] + $left;
$content_y = $cb["y"] + $top;
$content_width = $cb["w"] - $left - $right;
$content_height = $cb["h"] - $top - $bottom;
$prev_child = null;
$child = $this->_frame->get_first_child();
while ($child) {
$child->set_containing_block($content_x, $content_y, $content_width, $content_height);
// Check for begin reflow callback
$this->_check_callbacks("begin_page_reflow", $child);
$child->reflow();
$next_child = $child->get_next_sibling();
// Check for begin render callback
$this->_check_callbacks("begin_page_render", $child);
// Render the page
$this->_frame->get_renderer()->render($child);
// Check for end render callback
$this->_check_callbacks("end_page_render", $child);
if ( $next_child )
{
$this->_frame->next_page();
}
// Wait to dispose of all frames on the previous page
// so callback will have access to them
if ( $prev_child )
{
$prev_child->dispose(true);
}
$prev_child = $child;
$child = $next_child;
}
// Dispose of previous page if it still exists
if ( $prev_child )
{
$prev_child->dispose(true);
}
}
//........................................................................
/**
* Check for callbacks that need to be performed when a given event
* gets triggered on a page
*
* @param string $event the type of event
* @param Frame $frame the frame that event is triggered on
*/
protected function _check_callbacks($event, $frame) {
if (!isset($this->_callbacks)) {
$dompdf = $this->_frame->get_dompdf();
$this->_callbacks = $dompdf->get_callbacks();
$this->_canvas = $dompdf->get_canvas();
}
if (is_array($this->_callbacks) && isset($this->_callbacks[$event])) {
$info = array(0 => $this->_canvas, "canvas" => $this->_canvas,
1 => $frame, "frame" => $frame);
$fs = $this->_callbacks[$event];
foreach ($fs as $f) {
if (is_callable($f)) {
if (is_array($f)) {
$f[0]->$f[1]($info);
} else {
$f($info);
}
}
}
}
}
}
?>