xref: /plugin/dw2pdf/renderer.php (revision 7fa1550027bdd1632060aab30a577ffd8ce609ff) 
1<?php
2/**
3 * DokuWiki Plugin dw2pdf (Renderer Component)
4 *
5 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
6 * @author  Andreas Gohr <gohr@cosmocode.de>
7 */
8
9// must be run within Dokuwiki
10if (!defined('DOKU_INC')) die();
11
12if (!defined('DOKU_LF')) define('DOKU_LF', "\n");
13if (!defined('DOKU_TAB')) define('DOKU_TAB', "\t");
14require_once DOKU_INC.'inc/parser/xhtml.php';
15
16class renderer_plugin_dw2pdf extends Doku_Renderer_xhtml {
17
18    private $lastheadlevel = -1;
19    private $current_bookmark_level = 0;
20
21    /**
22     * Make available as XHTML replacement renderer
23     */
24    public function canRender($format){
25        if($format == 'xhtml') return true;
26        return false;
27    }
28
29    /**
30     * Simplified header printing with PDF bookmarks
31     */
32    function header($text, $level, $pos) {
33        if(!$text) return; //skip empty headlines
34
35        $hid = $this->_headerToLink($text,true);
36
37        // add PDF bookmark
38        $bookmark = '';
39        $bmlevel = $this->getConf('maxbookmarks');
40        if($bmlevel && $bmlevel >= $level){
41            // PDF readers choke on invalid nested levels
42
43            if ($this->lastheadlevel == -1)
44            	$this->lastheadlevel = $level;
45
46            $step = $level - $this->lastheadlevel;
47
48            if ($step > 0)
49            	$this->current_bookmark_level += 1;
50            else if ($step <0)  {
51            	$this->current_bookmark_level -= 1;
52                if ($this->current_bookmark_level < 0)
53                    $this->current_bookmark_level = 0;
54            }
55
56            $this->lastheadlevel = $level;
57
58            $bookmark = '<bookmark content="'.$this->_xmlEntities($text).'" level="'.($this->current_bookmark_level).'" />';
59        }
60
61        // print header
62        $this->doc .= DOKU_LF."<h$level>$bookmark";
63        $this->doc .= "<a name=\"$hid\">";
64        $this->doc .= $this->_xmlEntities($text);
65        $this->doc .= "</a>";
66        $this->doc .= "</h$level>".DOKU_LF;
67    }
68
69    /**
70     * Wrap centered media in a div to center it
71     */
72    function _media ($src, $title=NULL, $align=NULL, $width=NULL,
73                      $height=NULL, $cache=NULL, $render = true) {
74
75        $out = '';
76        if($align == 'center'){
77            $out .= '<div align="center" style="text-align: center">';
78        }
79
80        $out .= parent::_media ($src, $title, $align, $width, $height, $cache, $render);
81
82        if($align == 'center'){
83            $out .= '</div>';
84        }
85
86        return $out;
87    }
88
89    /**
90     * hover info makes no sense in PDFs, so drop acronyms
91     */
92    function acronym($acronym) {
93        $this->doc .= $this->_xmlEntities($acronym);
94    }
95
96
97    /**
98     * reformat links if needed
99     */
100
101    function _formatLink($link){
102        // prefix interwiki links with interwiki icon
103        if($link['name'][0] != '<' && preg_match('/\binterwiki iw_(.\w+)\b/',$link['class'],$m)){
104            if(file_exists(DOKU_INC.'lib/images/interwiki/'.$m[1].'.png')){
105                $img = DOKU_BASE.'lib/images/interwiki/'.$m[1].'.png';
106            }elseif(file_exists(DOKU_INC.'lib/images/interwiki/'.$m[1].'.gif')){
107                $img = DOKU_BASE.'lib/images/interwiki/'.$m[1].'.gif';
108            }else{
109                $img = DOKU_BASE.'lib/images/interwiki.png';
110            }
111
112            $link['name'] = '<img src="'.$img.'" width="16" height="16" style="vertical-align: center" class="'.$link['class'].'" />'.$link['name'];
113        }
114        return parent::_formatLink($link);
115    }
116
117    /**
118     * no obfuscation for email addresses
119     */
120    function emaillink($address, $name = NULL) {
121        global $conf;
122        $old = $conf['mailguard'];
123        $conf['mailguard'] = 'none';
124        parent::emaillink($address, $name);
125        $conf['mailguard'] = $old;
126    }
127
128}
129
130