1<?php
2/**
3 * SVGEdit Plugin: Nice way, to create, store, edit and embed SVG images into DokuWiki
4 * Usage:
5 * embed svg using do=export_svg
6 *   {{svg>page.svg}}
7 *   {{svg>namespace:page.svg}}
8 * base64 encode svg directly (requires ~~NOCACHE~~)
9 *   {{SVG>page.svg}}
10 *   {{SVG>namespace:page.svg}}
11 * base64 encode inline svg directly
12 *   <svg args...>...code...</svg>
13 *
14 * @license    Copylefted
15 * @author     Thomas Mudrunka <harvie--email-cz>
16 */
17
18if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
19if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
20require_once(DOKU_PLUGIN.'syntax.php');
21
22class syntax_plugin_svgedit extends DokuWiki_Syntax_Plugin {
23
24    var $helper = null;
25
26    function getInfo() {
27            return array('author' => 'Thomas Mudrunka',
28                         'email'  => 'harvie--email-cz',
29                         'date'   => '2010-06-20',
30                         'name'   => 'SVG-Edit Plugin',
31                         'desc'   => 'Nice way, to create, store, edit and embed SVG images into DokuWiki',
32                         'url'    => 'http://www.dokuwiki.org/plugin:svgedit'
33                 );
34    }
35
36    function getType() { return 'substition'; }
37    function getSort() { return 303; }
38    function getPType() { return 'block'; }
39
40    function connectTo($mode) {
41        $this->Lexer->addSpecialPattern("{{ ?svg>.+?}}", $mode, 'plugin_svgedit');
42        $this->Lexer->addSpecialPattern("{{ ?SVG>.+?}}", $mode, 'plugin_svgedit');
43				$this->Lexer->addSpecialPattern("<svg.+?</svg>", $mode, 'plugin_svgedit');
44    }
45
46    function handle($match, $state, $pos, Doku_Handler $handler) {
47				$type = substr($match,0,4);
48        return array($type, $match);
49    }
50
51		function svg_base64_encode($svg) { //create base64 encoded svg for use as svglink in svg_format_embed
52			return 'data:image/svg+xml;base64,'.base64_encode($svg).'" type="image/svg+xml';
53		}
54
55		function svg_format_embed($svglink, $title, $svg_parameters, $align='') { //create xhtml code for svg embeding
56				global $ID;
57
58				//use object tag for stupid browsers (like firefox) - ugly (relies on browser identification)
59				$is_webkit= preg_match('/webkit/', strtolower($_SERVER['HTTP_USER_AGENT']));
60				if ($is_webkit) $svgtag='img src';
61				else $svgtag='object '.$svg_parameters.' data';
62				$svgtag_close = array_shift(preg_split('/ /', $svgtag, 2));
63
64				return '<a href="'.$svglink.'" type="image/svg+xml" /><'.$svgtag.'="'.$svglink.'" class="media'.$align.'" alt="'.$title.'" title="'.$title.'" type="image/svg+xml">'."</$svgtag_close></a>";
65		}
66
67    function render($format, Doku_Renderer $renderer, $data) {
68				if ($format!='xhtml') return;
69				global $ID;
70
71				$svg_wiki_page = trim(substr($data[1], 6, -2)); //name of wiki page containing SVG image
72				resolve_pageid(getNS($ID),$svg_wiki_page,$exists); //resolve relative IDs
73
74				//detect image size for stupid browsers (like firefox) - ugly (fails if svg does not contain information about it's size)
75				$svg_dimensions = '';
76				preg_match('/width="[0-9]+" height="[0-9]+"/', $data[1].rawWiki($svg_wiki_page), $_);
77				if(isset($_[0])) $svg_dimensions = $_[0];
78
79				// Check alignment
80				$ralign = (bool)preg_match('/^\{\{ /',$data[1]);
81				$lalign = (bool)preg_match('/ \}\}$/',$data[1]);
82
83				switch(true) {
84					case $lalign & $ralign: $align='center'; break;
85					case $ralign: $align='right'; break;
86					case $lalign: $align='left'; break;
87					default: $align='';
88				}
89
90				if($data[0]==='<svg') {
91					$svgenc = $this->svg_base64_encode($data[1]);
92					$renderer->doc .= $this->svg_format_embed($svgenc, 'inline-svg@'.$ID, $svg_dimensions);
93					return true;
94				}
95				if($data[0]==='{{sv' || $data[0]==='{{ s') {
96					$svglink = exportlink($svg_wiki_page,'svg');
97					$renderer->doc .= $this->svg_format_embed($svglink, 'image:'.htmlspecialchars($svg_wiki_page), $svg_dimensions, $align);
98					$renderer->doc .= '<br /><small>'.html_wikilink($svg_wiki_page,'svg@'.$svg_wiki_page).'</small>';
99        	return true;
100				}
101				if($data[0]==='{{SV' || $data[0]==='{{ S') {
102					$svgenc = $this->svg_base64_encode(rawWiki($svg_wiki_page));
103					$renderer->doc .= $this->svg_format_embed($svgenc, 'image:'.htmlspecialchars($svg_wiki_page), $svg_dimensions, $align);
104					$renderer->doc .= '<br /><small>'.html_wikilink($svg_wiki_page,'SVG@'.$svg_wiki_page).'</small>';
105        	return true;
106				}
107    }
108}
109