1<?php 2/** 3 * DokuWiki Plugin mediathumbnails (Syntax Component) 4 * 5 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html 6 * @author Thomas Schäfer <thomas.schaefer@itschert.net> 7 */ 8 9// must be run within Dokuwiki 10if (!defined('DOKU_INC')) { 11 die(); 12} 13 14class syntax_plugin_mediathumbnails extends DokuWiki_Syntax_Plugin { 15 16 /** 17 * @return string Syntax mode type 18 */ 19 public function getType() 20 { 21 return 'substition'; 22 } 23 24 /** 25 * @return string Paragraph type 26 */ 27 public function getPType() 28 { 29 return 'normal'; 30 } 31 32 /** 33 * @return int Sort order - Low numbers go before high numbers 34 */ 35 public function getSort() 36 { 37 return 1; 38 } 39 40 /** 41 * Connect lookup pattern to lexer. 42 * 43 * @param string $mode Parser mode 44 */ 45 public function connectTo($mode) 46 { 47 $this->Lexer->addSpecialPattern("{{thumbnail>.+?}}", $mode, substr(get_class($this), 7)); 48 } 49 50 /** 51 * Handle matches of the mediathumbnails syntax 52 * 53 * @param string $match The match of the syntax 54 * @param int $state The state of the handler 55 * @param int $pos The position in the document 56 * @param Doku_Handler $handler The handler 57 * 58 * @return array Data for the renderer 59 */ 60 public function handle($match, $state, $pos, Doku_Handler $handler) 61 { 62 // Locate the given media file and check if it can be opened as zip 63 $mediapath_file = substr($match, 12, -2); //strip markup 64 $filepath_local_file = mediaFN($mediapath_file); 65 $timestamp_local_file = file_exists($filepath_local_file) ? filemtime($filepath_local_file) : false; 66 67 //TODO: check for extension "fileinfo", then check for MIME type: if (mime_content_type($filepath_local_file) == "application/pdf") { 68 if (substr($mediapath_file,-4) == ".pdf") { 69 //$extended_filename = basename($filepath_local_file) . ".".$this->getConf('thumb_width').".jpg"; 70 $extended_filename = basename($filepath_local_file) . ".thumb.jpg"; 71 $filepath_thumbnail = dirname($filepath_local_file) . DIRECTORY_SEPARATOR . $extended_filename; 72 $mediapath_thumbnail = substr($mediapath_file,0,strrpos($mediapath_file,':')) . ":" . $extended_filename; 73 74 $im = new imagick( $filepath_local_file."[0]" ); 75 $im->setImageColorspace(255); 76 $im->setResolution(300, 300); 77 $im->setCompressionQuality(95); 78 $im->setImageFormat('jpeg'); 79 //$im->resizeImage($this->getConf('thumb_width')*3,0,imagick::FILTER_LANCZOS ,1); 80 $im->writeImage($filepath_thumbnail); 81 $im->clear(); 82 $im->destroy(); 83 return array($mediapath_file,$mediapath_thumbnail); 84 } 85 86 $zip = new ZipArchive; 87 if ($zip->open($filepath_local_file) !== TRUE) { 88 // media file does not exist 89 return array($mediapath_file); 90 } 91 92 // The media file exists and acts as a zip file! 93 94 // Check all possible paths (configured in configuration key 'thumb_paths') if there is a file available 95 $thumb_paths_to_investigate = $this->getConf('thumb_paths'); 96 97 foreach($thumb_paths_to_investigate as $thumbnail_path) { 98 $thumbnail_ending = strrchr($thumbnail_path,'.'); 99 100 if ($zip->locateName($thumbnail_path) !== false) { 101 102 // The thumbnail file exists, so prepare more information, now! 103 $extended_filename = basename($filepath_local_file) . ".thumb" . $thumbnail_ending; 104 $filepath_thumbnail = dirname($filepath_local_file) . DIRECTORY_SEPARATOR . $extended_filename; 105 $mediapath_thumbnail = substr($mediapath_file,0,strrpos($mediapath_file,':')) . ":" . $extended_filename; 106 107 if (file_exists($filepath_thumbnail) && filemtime($filepath_thumbnail) == $timestamp_local_file) { 108 // A thumbnail file for the current file version has already been created, don't extract it again, but give the renderer all needed information! 109 return array($mediapath_file, $mediapath_thumbnail); 110 } 111 112 // Get the thumbnail file! 113 $fp = $zip->getStream($thumbnail_path); 114 if(!$fp) { 115 return array(); 116 } 117 118 $thumbnaildata = ''; 119 while (!feof($fp)) { 120 $thumbnaildata .= fread($fp, 8192); 121 } 122 123 fclose($fp); 124 125 // Write thumbnail file to media folder 126 file_put_contents($filepath_thumbnail, $thumbnaildata); 127 128 // Set timestamp to the media file's timestamp (this is used to check in later passes if the file already exists in the correct version). 129 touch($filepath_thumbnail, $timestamp_local_file); 130 131 // Give media path to renderer 132 return array($mediapath_file, $mediapath_thumbnail); 133 } 134 } 135 136 return array($mediapath_file); 137 } 138 139 /** 140 * Render xhtml output or metadata 141 * 142 * @param string $mode Renderer mode (supported modes: xhtml) 143 * @param Doku_Renderer $renderer The renderer 144 * @param array $data The data from the handler() function 145 * 146 * @return bool If rendering was successful. 147 */ 148 public function render($mode, Doku_Renderer $renderer, $data) 149 { 150 list ($mediapath_file, $mediapath_thumbnail) = $data; 151 152 if ($mode == 'xhtml') { 153 154 // check if a thumbnail file was found 155 if (!$mediapath_thumbnail) { 156 if ($this->getConf('show_missing_thumb_error')) { 157 $renderer->doc .= trim($this->getConf('no_thumb_error_message')) . " " . $mediapath_file; 158 return true; 159 } else { 160 return false; 161 } 162 } 163 164 $src = ml($mediapath_thumbnail,array()); 165 166 $i = array(); 167 $i['width'] = $this->getConf('thumb_width'); 168 //$i['height'] = ''; 169 $i['title'] = $mediapath_file; 170 $i['class'] = 'tn'; 171 $iatt = buildAttributes($i); 172 173 $renderer->doc .= ($this->getConf('link_to_media_file') ? '<a href="/lib/exe/fetch.php?media=' . $mediapath_file . '">' : '') . 174 '<img src="'.$src.'" '.$iatt.' />' . 175 ($this->getConf('link_to_media_file') ? '</a>' : ''); 176 return true; 177 178 } elseif ($mode == 'odt') { 179 180 // TODO: yet to implement 181 $renderer->cdata(""); 182 return true; 183 184 } 185 186 return false; 187 } 188} 189 190