syntax.php

   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
  18 if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
  19 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
  20 require_once(DOKU_PLUGIN.'syntax.php');
  21
  22 class 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 }