[1575] | 1 | <?php |
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| 2 | /** |
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| 3 | * DOMPDF - PHP5 HTML to PDF renderer |
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| 4 | * |
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| 5 | * File: $RCSfile: block_frame_decorator.cls.php,v $ |
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| 6 | * Created on: 2004-06-02 |
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| 7 | * |
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| 8 | * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> |
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| 9 | * |
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| 10 | * This library is free software; you can redistribute it and/or |
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| 11 | * modify it under the terms of the GNU Lesser General Public |
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| 12 | * License as published by the Free Software Foundation; either |
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| 13 | * version 2.1 of the License, or (at your option) any later version. |
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| 14 | * |
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| 15 | * This library is distributed in the hope that it will be useful, |
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 18 | * Lesser General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU Lesser General Public License |
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| 21 | * along with this library in the file LICENSE.LGPL; if not, write to the |
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| 22 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 23 | * 02111-1307 USA |
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| 24 | * |
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| 25 | * Alternatively, you may distribute this software under the terms of the |
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| 26 | * PHP License, version 3.0 or later. A copy of this license should have |
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| 27 | * been distributed with this file in the file LICENSE.PHP . If this is not |
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| 28 | * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. |
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| 29 | * |
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| 30 | * The latest version of DOMPDF might be available at: |
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| 31 | * http://www.digitaljunkies.ca/dompdf |
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| 32 | * |
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| 33 | * @link http://www.digitaljunkies.ca/dompdf |
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| 34 | * @copyright 2004 Benj Carson |
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| 35 | * @author Benj Carson <benjcarson@digitaljunkies.ca> |
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| 36 | * @package dompdf |
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| 37 | * @version 0.5.1 |
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| 38 | */ |
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| 39 | |
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| 40 | /* $Id: block_frame_decorator.cls.php,v 1.8 2006/07/07 21:31:02 benjcarson Exp $ */ |
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| 41 | |
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| 42 | /** |
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| 43 | * Decorates frames for block layout |
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| 44 | * |
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| 45 | * @access private |
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| 46 | * @package dompdf |
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| 47 | */ |
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| 48 | class Block_Frame_Decorator extends Frame_Decorator { |
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| 49 | |
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| 50 | const DEFAULT_COUNTER = "-dompdf-default-counter"; |
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| 51 | |
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| 52 | protected $_lines; // array( [num] => array([frames] => array(<frame list>), |
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| 53 | // y, w, h) ) |
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| 54 | protected $_counters; // array([id] => counter_value) (for generated content) |
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| 55 | protected $_cl; // current line index |
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| 56 | |
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| 57 | //........................................................................ |
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| 58 | |
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| 59 | function __construct(Frame $frame, DOMPDF $dompdf) { |
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| 60 | parent::__construct($frame, $dompdf); |
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| 61 | $this->_lines = array(array("frames" => array(), |
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| 62 | "wc" => 0, |
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| 63 | "y" => null, |
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| 64 | "w" => 0, |
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| 65 | "h" => 0)); |
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| 66 | $this->_counters = array(self::DEFAULT_COUNTER => 0); |
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| 67 | $this->_cl = 0; |
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| 68 | |
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| 69 | } |
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| 70 | |
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| 71 | //........................................................................ |
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| 72 | |
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| 73 | function reset() { |
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| 74 | parent::reset(); |
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| 75 | $this->_lines = array(array("frames" => array(), |
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| 76 | "wc" => 0, |
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| 77 | "y" => null, |
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| 78 | "w" => 0, |
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| 79 | "h" => 0)); |
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| 80 | $this->_counters = array(self::DEFAULT_COUNTER => 0); |
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| 81 | $this->_cl = 0; |
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| 82 | } |
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| 83 | |
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| 84 | //........................................................................ |
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| 85 | |
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| 86 | // Accessor methods |
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| 87 | |
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| 88 | function get_current_line($i = null) { |
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| 89 | $cl = $this->_lines[$this->_cl]; |
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| 90 | if ( isset($i) ) |
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| 91 | return $cl[$i]; |
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| 92 | return $cl; |
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| 93 | } |
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| 94 | |
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| 95 | function get_lines() { return $this->_lines; } |
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| 96 | |
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| 97 | //........................................................................ |
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| 98 | |
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| 99 | // Set methods |
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| 100 | function set_current_line($y = null, $w = null, $h = null) { |
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| 101 | $this->set_line($this->_cl, $y, $w, $h); |
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| 102 | } |
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| 103 | |
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| 104 | function clear_line($i) { |
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| 105 | if ( isset($this->_lines[$i]) ) |
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| 106 | unset($this->_lines[$i]); |
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| 107 | } |
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| 108 | |
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| 109 | function set_line($lineno, $y = null, $w = null, $h = null) { |
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| 110 | |
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| 111 | if ( is_array($y) ) |
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| 112 | extract($y); |
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| 113 | |
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| 114 | if (is_numeric($y)) |
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| 115 | $this->_lines[$lineno]["y"] = $y; |
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| 116 | |
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| 117 | if (is_numeric($w)) |
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| 118 | $this->_lines[$lineno]["w"] = $w; |
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| 119 | |
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| 120 | if (is_numeric($h)) |
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| 121 | $this->_lines[$lineno]["h"] = $h; |
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| 122 | } |
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| 123 | |
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| 124 | |
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| 125 | function add_frame_to_line(Frame $frame) { |
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| 126 | |
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| 127 | // Handle inline frames (which are effectively wrappers) |
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| 128 | if ( $frame instanceof Inline_Frame_Decorator ) { |
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| 129 | |
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| 130 | // Handle line breaks |
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| 131 | if ( $frame->get_node()->nodeName == "br" ) { |
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| 132 | $this->maximize_line_height( $frame->get_style()->length_in_pt($frame->get_style()->line_height) ); |
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| 133 | $this->add_line(); |
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| 134 | return; |
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| 135 | } |
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| 136 | |
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| 137 | // Add each child of the inline frame to the line individually |
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| 138 | foreach ($frame->get_children() as $child) |
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| 139 | $this->add_frame_to_line( $child ); |
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| 140 | |
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| 141 | return; |
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| 142 | } |
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| 143 | |
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| 144 | $w = $frame->get_margin_width(); |
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| 145 | |
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| 146 | if ( $w == 0 ) |
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| 147 | return; |
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| 148 | |
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| 149 | // Debugging code: |
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| 150 | |
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| 151 | // pre_r("\nAdding frame to line:"); |
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| 152 | |
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| 153 | // pre_r("Me: " . $this->get_node()->nodeName . " (" . (string)$this->get_node() . ")"); |
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| 154 | // pre_r("Node: " . $frame->get_node()->nodeName . " (" . (string)$frame->get_node() . ")"); |
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| 155 | // if ( $frame->get_node()->nodeName == "#text" ) |
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| 156 | // pre_r($frame->get_node()->nodeValue); |
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| 157 | |
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| 158 | // pre_r("Line width: " . $this->_lines[$this->_cl]["w"]); |
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| 159 | // pre_r("Frame width: " . $w); |
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| 160 | // pre_r("Frame height: " . $frame->get_margin_height()); |
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| 161 | // pre_r("Containing block width: " . $this->get_containing_block("w")); |
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| 162 | |
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| 163 | // End debugging |
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| 164 | |
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| 165 | if ($this->_lines[$this->_cl]["w"] + $w > $this->get_containing_block("w")) |
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| 166 | $this->add_line(); |
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| 167 | |
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| 168 | $frame->position(); |
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| 169 | |
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| 170 | |
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| 171 | $this->_lines[$this->_cl]["frames"][] = $frame; |
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| 172 | |
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| 173 | if ( $frame->get_node()->nodeName == "#text") |
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| 174 | $this->_lines[$this->_cl]["wc"] += count(preg_split("/\s+/", $frame->get_text())); |
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| 175 | |
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| 176 | $this->_lines[$this->_cl]["w"] += $w; |
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| 177 | $this->_lines[$this->_cl]["h"] = max($this->_lines[$this->_cl]["h"], $frame->get_margin_height()); |
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| 178 | |
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| 179 | } |
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| 180 | |
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| 181 | function remove_frames_from_line(Frame $frame) { |
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| 182 | // Search backwards through the lines for $frame |
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| 183 | $i = $this->_cl; |
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| 184 | |
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| 185 | while ($i >= 0) { |
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| 186 | if ( ($j = in_array($frame, $this->_lines[$i]["frames"], true)) !== false ) |
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| 187 | break; |
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| 188 | $i--; |
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| 189 | } |
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| 190 | |
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| 191 | if ( $j === false ) |
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| 192 | return; |
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| 193 | |
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| 194 | // Remove $frame and all frames that follow |
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| 195 | while ($j < count($this->_lines[$i]["frames"])) { |
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| 196 | $f = $this->_lines[$i]["frames"][$j]; |
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| 197 | unset($this->_lines[$i]["frames"][$j++]); |
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| 198 | $this->_lines[$i]["w"] -= $f->get_margin_width(); |
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| 199 | } |
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| 200 | |
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| 201 | // Recalculate the height of the line |
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| 202 | $h = 0; |
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| 203 | foreach ($this->_lines[$i]["frames"] as $f) |
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| 204 | $h = max( $h, $f->get_margin_height() ); |
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| 205 | |
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| 206 | $this->_lines[$i]["h"] = $h; |
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| 207 | |
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| 208 | // Remove all lines that follow |
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| 209 | while ($this->_cl > $i) |
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| 210 | unset($this->_lines[ $this->_cl-- ]); |
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| 211 | |
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| 212 | } |
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| 213 | |
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| 214 | function increase_line_width($w) { |
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| 215 | $this->_lines[ $this->_cl ]["w"] += $w; |
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| 216 | } |
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| 217 | |
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| 218 | function maximize_line_height($val) { |
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| 219 | $this->_lines[ $this->_cl ]["h"] = max($this->_lines[ $this->_cl ]["h"], $val); |
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| 220 | } |
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| 221 | |
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| 222 | function add_line() { |
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| 223 | |
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| 224 | // if ( $this->_lines[$this->_cl]["h"] == 0 ) //count($this->_lines[$i]["frames"]) == 0 || |
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| 225 | // return; |
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| 226 | |
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| 227 | $y = $this->_lines[$this->_cl]["y"] + $this->_lines[$this->_cl]["h"]; |
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| 228 | |
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| 229 | $this->_lines[ ++$this->_cl ] = array("frames" => array(), |
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| 230 | "wc" => 0, |
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| 231 | "y" => $y, "w" => 0, "h" => 0); |
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| 232 | } |
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| 233 | |
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| 234 | //........................................................................ |
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| 235 | |
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| 236 | function reset_counter($id = self::DEFAULT_COUNTER, $value = 0) { |
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| 237 | $this->_counters[$id] = $value; |
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| 238 | } |
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| 239 | |
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| 240 | function increment_counter($id = self::DEFAULT_COUNTER, $increment = 1) { |
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| 241 | if ( !isset($this->_counters[$id]) ) |
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| 242 | $this->_counters[$id] = $increment; |
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| 243 | else |
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| 244 | $this->_counters[$id] += $increment; |
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| 245 | |
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| 246 | } |
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| 247 | |
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| 248 | function counter_value($id = self::DEFAULT_COUNTER, $type = "decimal") { |
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| 249 | $type = mb_strtolower($type); |
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| 250 | if ( !isset($this->_counters[$id]) ) |
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| 251 | $this->_counters[$id] = 0; |
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| 252 | |
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| 253 | switch ($type) { |
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| 254 | |
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| 255 | default: |
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| 256 | case "decimal": |
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| 257 | return $this->_counters[$id]; |
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| 258 | |
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| 259 | case "decimal-leading-zero": |
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| 260 | return str_pad($this->_counters[$id], 2, "0"); |
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| 261 | |
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| 262 | case "lower-roman": |
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| 263 | return dec2roman($this->_counters[$id]); |
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| 264 | |
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| 265 | case "upper-roman": |
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| 266 | return mb_strtoupper(dec2roman($this->_counters[$id])); |
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| 267 | |
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| 268 | case "lower-latin": |
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| 269 | case "lower-alpha": |
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| 270 | return chr( ($this->_counters[$id] % 26) + ord('a') - 1); |
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| 271 | |
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| 272 | case "upper-latin": |
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| 273 | case "upper-alpha": |
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| 274 | return chr( ($this->_counters[$id] % 26) + ord('A') - 1); |
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| 275 | |
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| 276 | case "lower-greek": |
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| 277 | return chr($this->_counters[$id] + 944); |
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| 278 | |
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| 279 | case "upper-greek": |
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| 280 | return chr($this->_counters[$id] + 912); |
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| 281 | } |
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| 282 | } |
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| 283 | } |
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| 284 | |
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| 285 | ?> |
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