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<?php
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* File: $RCSfile: block_frame_decorator.cls.php,v $
* Created on: 2004-06-02
*
* 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: block_frame_decorator.cls.php,v 1.8 2006/07/07 21:31:02 benjcarson Exp $ */
/**
* Decorates frames for block layout
*
* @access private
* @package dompdf
*/
class Block_Frame_Decorator extends Frame_Decorator {
const DEFAULT_COUNTER = "-dompdf-default-counter";
protected $_lines; // array( [num] => array([frames] => array(<frame list>),
// y, w, h) )
protected $_counters; // array([id] => counter_value) (for generated content)
protected $_cl; // current line index
//........................................................................
function __construct(Frame $frame, DOMPDF $dompdf) {
parent::__construct($frame, $dompdf);
$this->_lines = array(array("frames" => array(),
"wc" => 0,
"y" => null,
"w" => 0,
"h" => 0));
$this->_counters = array(self::DEFAULT_COUNTER => 0);
$this->_cl = 0;
}
//........................................................................
function reset() {
parent::reset();
$this->_lines = array(array("frames" => array(),
"wc" => 0,
"y" => null,
"w" => 0,
"h" => 0));
$this->_counters = array(self::DEFAULT_COUNTER => 0);
$this->_cl = 0;
}
//........................................................................
// Accessor methods
function get_current_line($i = null) {
$cl = $this->_lines[$this->_cl];
if ( isset($i) )
return $cl[$i];
return $cl;
}
function get_lines() { return $this->_lines; }
//........................................................................
// Set methods
function set_current_line($y = null, $w = null, $h = null) {
$this->set_line($this->_cl, $y, $w, $h);
}
function clear_line($i) {
if ( isset($this->_lines[$i]) )
unset($this->_lines[$i]);
}
function set_line($lineno, $y = null, $w = null, $h = null) {
if ( is_array($y) )
extract($y);
if (is_numeric($y))
$this->_lines[$lineno]["y"] = $y;
if (is_numeric($w))
$this->_lines[$lineno]["w"] = $w;
if (is_numeric($h))
$this->_lines[$lineno]["h"] = $h;
}
function add_frame_to_line(Frame $frame) {
// Handle inline frames (which are effectively wrappers)
if ( $frame instanceof Inline_Frame_Decorator ) {
// Handle line breaks
if ( $frame->get_node()->nodeName == "br" ) {
$this->maximize_line_height( $frame->get_style()->length_in_pt($frame->get_style()->line_height) );
$this->add_line();
return;
}
// Add each child of the inline frame to the line individually
foreach ($frame->get_children() as $child)
$this->add_frame_to_line( $child );
return;
}
$w = $frame->get_margin_width();
if ( $w == 0 )
return;
// Debugging code:
// pre_r("\nAdding frame to line:");
// pre_r("Me: " . $this->get_node()->nodeName . " (" . (string)$this->get_node() . ")");
// pre_r("Node: " . $frame->get_node()->nodeName . " (" . (string)$frame->get_node() . ")");
// if ( $frame->get_node()->nodeName == "#text" )
// pre_r($frame->get_node()->nodeValue);
// pre_r("Line width: " . $this->_lines[$this->_cl]["w"]);
// pre_r("Frame width: " . $w);
// pre_r("Frame height: " . $frame->get_margin_height());
// pre_r("Containing block width: " . $this->get_containing_block("w"));
// End debugging
if ($this->_lines[$this->_cl]["w"] + $w > $this->get_containing_block("w"))
$this->add_line();
$frame->position();
$this->_lines[$this->_cl]["frames"][] = $frame;
if ( $frame->get_node()->nodeName == "#text")
$this->_lines[$this->_cl]["wc"] += count(preg_split("/\s+/", $frame->get_text()));
$this->_lines[$this->_cl]["w"] += $w;
$this->_lines[$this->_cl]["h"] = max($this->_lines[$this->_cl]["h"], $frame->get_margin_height());
}
function remove_frames_from_line(Frame $frame) {
// Search backwards through the lines for $frame
$i = $this->_cl;
while ($i >= 0) {
if ( ($j = in_array($frame, $this->_lines[$i]["frames"], true)) !== false )
break;
$i--;
}
if ( $j === false )
return;
// Remove $frame and all frames that follow
while ($j < count($this->_lines[$i]["frames"])) {
$f = $this->_lines[$i]["frames"][$j];
unset($this->_lines[$i]["frames"][$j++]);
$this->_lines[$i]["w"] -= $f->get_margin_width();
}
// Recalculate the height of the line
$h = 0;
foreach ($this->_lines[$i]["frames"] as $f)
$h = max( $h, $f->get_margin_height() );
$this->_lines[$i]["h"] = $h;
// Remove all lines that follow
while ($this->_cl > $i)
unset($this->_lines[ $this->_cl-- ]);
}
function increase_line_width($w) {
$this->_lines[ $this->_cl ]["w"] += $w;
}
function maximize_line_height($val) {
$this->_lines[ $this->_cl ]["h"] = max($this->_lines[ $this->_cl ]["h"], $val);
}
function add_line() {
// if ( $this->_lines[$this->_cl]["h"] == 0 ) //count($this->_lines[$i]["frames"]) == 0 ||
// return;
$y = $this->_lines[$this->_cl]["y"] + $this->_lines[$this->_cl]["h"];
$this->_lines[ ++$this->_cl ] = array("frames" => array(),
"wc" => 0,
"y" => $y, "w" => 0, "h" => 0);
}
//........................................................................
function reset_counter($id = self::DEFAULT_COUNTER, $value = 0) {
$this->_counters[$id] = $value;
}
function increment_counter($id = self::DEFAULT_COUNTER, $increment = 1) {
if ( !isset($this->_counters[$id]) )
$this->_counters[$id] = $increment;
else
$this->_counters[$id] += $increment;
}
function counter_value($id = self::DEFAULT_COUNTER, $type = "decimal") {
$type = mb_strtolower($type);
if ( !isset($this->_counters[$id]) )
$this->_counters[$id] = 0;
switch ($type) {
default:
case "decimal":
return $this->_counters[$id];
case "decimal-leading-zero":
return str_pad($this->_counters[$id], 2, "0");
case "lower-roman":
return dec2roman($this->_counters[$id]);
case "upper-roman":
return mb_strtoupper(dec2roman($this->_counters[$id]));
case "lower-latin":
case "lower-alpha":
return chr( ($this->_counters[$id] % 26) + ord('a') - 1);
case "upper-latin":
case "upper-alpha":
return chr( ($this->_counters[$id] % 26) + ord('A') - 1);
case "lower-greek":
return chr($this->_counters[$id] + 944);
case "upper-greek":
return chr($this->_counters[$id] + 912);
}
}
}
?>
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