david
bce2a10d83
(Sacado del foro -> http://forums.knowledgetree.org/viewtopic.php?f=8&t=19932) git-svn-id: https://192.168.0.254/svn/Proyectos.Incam_SGD/trunk@4 eb19766c-00d9-a042-a3a0-45cb8ec72764
293 lines
11 KiB
PHP
293 lines
11 KiB
PHP
<?php
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/**
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* $Id: $
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*
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* KnowledgeTree Community Edition
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* Document Management Made Simple
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* Copyright (C) 2008, 2009 KnowledgeTree Inc.
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*
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 3 as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco,
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* California 94120-7775, or email info@knowledgetree.com.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "Powered by
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* KnowledgeTree" logo and retain the original copyright notice. If the display of the
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* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
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* must display the words "Powered by KnowledgeTree" and retain the original
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* copyright notice.
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* Contributor( s): ______________________________________
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*/
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require_once(KT_LIB_DIR . "/actions/documentviewlet.inc.php");
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require_once(KT_DIR . '/search2/documentProcessor/documentProcessor.inc.php');
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/**
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* Generates thumbnails of documents using the pdf converter output
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* Dependent on the pdfConverter
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*/
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class thumbnailGenerator extends BaseProcessor
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{
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public $order = 3;
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protected $namespace = 'thumbnails.generator.processor';
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/**
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* Constructor
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*
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* @return thumbnailGenerator
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*/
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public function thumbnailGenerator()
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{
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}
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/**
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* Gets the document path and calls the generator function
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*
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* @return boolean
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*/
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public function processDocument()
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{
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// do the generation
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$res = $this->generateThumbnail();
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return $res;
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}
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/**
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* The supported mime types for the converter.
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*
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* @return array
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*/
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public function getSupportedMimeTypes()
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{
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// $aAcceptedMimeTypes = array('doc', 'ods', 'odt', 'ott', 'txt', 'rtf', 'sxw', 'stw',
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// // 'html', 'htm',
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// 'xml' , 'pdb', 'psw', 'ods', 'ots', 'sxc',
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// 'stc', 'dif', 'dbf', 'xls', 'xlt', 'slk', 'csv', 'pxl',
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// 'odp', 'otp', 'sxi', 'sti', 'ppt', 'pot', 'sxd', 'odg',
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// 'otg', 'std', 'asc');
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// work around for ms office xp and 2003 templates - the mime type is identical but the templates aren't supported
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if(!empty($fileType)){
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$types = array('dot', 'xlt', 'pot');
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if(in_array($fileType, $types)){
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return false;
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}
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}
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// taken from the original list of accepted types in the pdf generator action
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$mime_types = array();
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$mime_types[] = 'text/plain';
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$mime_types[] = 'text/html';
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$mime_types[] = 'text/csv';
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$mime_types[] = 'text/rtf';
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// Office OLE2 - 2003, XP, etc
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$mime_types[] = 'application/msword';
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$mime_types[] = 'application/vnd.ms-powerpoint';
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$mime_types[] = 'application/vnd.ms-excel';
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// Star Office
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$mime_types[] = 'application/vnd.sun.xml.writer';
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//$mime_types[] = 'application/vnd.sun.xml.writer.template';
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$mime_types[] = 'application/vnd.sun.xml.calc';
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//$mime_types[] = 'application/vnd.sun.xml.calc.template';
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$mime_types[] = 'application/vnd.sun.xml.draw';
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//$mime_types[] = 'application/vnd.sun.xml.draw.template';
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$mime_types[] = 'application/vnd.sun.xml.impress';
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//$mime_types[] = 'application/vnd.sun.xml.impress.template';
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// Open Office
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$mime_types[] = 'application/vnd.oasis.opendocument.text';
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//$mime_types[] = 'application/vnd.oasis.opendocument.text-template';
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$mime_types[] = 'application/vnd.oasis.opendocument.graphics';
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//$mime_types[] = 'application/vnd.oasis.opendocument.graphics-template';
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$mime_types[] = 'application/vnd.oasis.opendocument.presentation';
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//$mime_types[] = 'application/vnd.oasis.opendocument.presentation-template';
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$mime_types[] = 'application/vnd.oasis.opendocument.spreadsheet';
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//$mime_types[] = 'application/vnd.oasis.opendocument.spreadsheet-template';
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// OO3
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// Office 2007
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$mime_types[] = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
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//$mime_types[] = 'application/vnd.openxmlformats-officedocument.wordprocessingml.template';
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//$mime_types[] = 'application/vnd.openxmlformats-officedocument.presentationml.template';
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//$mime_types[] = 'application/vnd.openxmlformats-officedocument.presentationml.slideshow';
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$mime_types[] = 'application/vnd.openxmlformats-officedocument.presentationml.presentation';
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$mime_types[] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
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//$mime_types[] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.template';
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// In addition PDF files are also supported
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$mime_types[] = 'application/pdf';
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return $mime_types;
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}
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/**
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* Generates the thumbnail from the pdf
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*
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* @return boolean
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*/
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private function generateThumbnail()
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{
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/*
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The thumbnail is displayed in the info panel and the document view
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The info panel is in the plugin ktcore/documentpreview/
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- add a hook in there but build the functionality in this plugin ie keep the plugins separate and don't create dependencies
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- if the thumbnail plugin is disabled then maybe display a normal sized info panel
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The document view will display the thumbnail on the right in a document viewlet similar to the workflow viewlet
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- check out ktcore/KTDocumentViewlets.php
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- viewlet class is below
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*/
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global $default;
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$mimeTypeId = $this->document->getMimeTypeID();
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$mimeType = KTMime::getMimeTypeName($mimeTypeId);
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// Get the pdf source file - if the document is a pdf then use the document as the source
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if($mimeType == 'application/pdf' || $mimeType == 'image/png' || $mimeType == 'image/jpeg' ) {
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$pdfDir = $default->documentRoot;
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$pdfFile = $pdfDir . DIRECTORY_SEPARATOR . $this->document->getStoragePath();
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} else {
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$pdfDir = $default->pdfDirectory;
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$pdfFile = $pdfDir .DIRECTORY_SEPARATOR. $this->document->iId.'.pdf';
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}
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$thumbnaildir = $default->varDirectory.DIRECTORY_SEPARATOR.'thumbnails';
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if (stristr(PHP_OS,'WIN')) {
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$thumbnaildir = str_replace('/', '\\', $thumbnaildir);
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$pdfFile = str_replace('/', '\\', $pdfFile);
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}
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$thumbnailfile = $thumbnaildir.DIRECTORY_SEPARATOR.$this->document->iId.'.jpg';
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//if thumbail dir does not exist, generate one and add an index file to block access
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if (!file_exists($thumbnaildir)) {
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mkdir($thumbnaildir, 0755);
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touch($thumbnaildir.DIRECTORY_SEPARATOR.'index.html');
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file_put_contents($thumbnaildir.DIRECTORY_SEPARATOR.'index.html', 'You do not have permission to access this directory.');
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}
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// if there is no pdf that exists - hop out
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if(!file_exists($pdfFile)){
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$default->log->debug('Thumbnail Generator Plugin: PDF file does not exist, cannot generate a thumbnail');
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return false;
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}
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// if a previous version of the thumbnail exists - delete it
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if (file_exists($thumbnailfile)) {
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@unlink($thumbnailfile);
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}
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// do generation
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$pathConvert = (!empty($default->convertPath)) ? $default->convertPath : 'convert';
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// windows path may contain spaces
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if (stristr(PHP_OS,'WIN')) {
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$cmd = "\"{$pathConvert}\" \"{$pdfFile}[0]\" -resize 200x200 \"$thumbnailfile\"";
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}
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else {
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$cmd = "{$pathConvert} {$pdfFile}[0] -resize 200x200 $thumbnailfile";
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}
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$result = KTUtil::pexec($cmd);
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return true;
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}
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}
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class ThumbnailViewlet extends KTDocumentViewlet {
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var $sName = 'thumbnail.viewlets';
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public function display_viewlet() {
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// Get the document id
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$documentId = $this->oDocument->getId();
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if(!is_numeric($documentId)){
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return '';
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}
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return $this->renderThumbnail($documentId);
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}
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public function renderThumbnail($documentId) {
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// Set up the template
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$oKTTemplating =& KTTemplating::getSingleton();
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$oTemplate =& $oKTTemplating->loadTemplate('thumbnail_viewlet');
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if (is_null($oTemplate)){
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return '';
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}
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// Check that the thumbnail exists on disk
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global $default;
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$varDir = $default->varDirectory;
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$thumbnailCheck = $varDir . '/thumbnails/'.$documentId.'.jpg';
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// Use correct slashes for windows
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if (strpos(PHP_OS, 'WIN') !== false) {
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$thumbnailCheck = str_replace('/', '\\', $thumbnailCheck);
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}
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// if the thumbnail doesn't exist try to create it
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if (!file_exists($thumbnailCheck)){
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$thumbnailer = new thumbnailGenerator();
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$thumbnailer->setDocument($this->oDocument);
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$thumbnailer->processDocument();
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// if it still doesn't exist, return an empty string
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if (!file_exists($thumbnailCheck)) {
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return '';
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}
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}
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// check for existence and status of the instant view plugin
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$url = '';
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if (KTPluginUtil::pluginIsActive('instaview.processor.plugin'))
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{
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require_once KTPluginUtil::getPluginPath('instaview.processor.plugin') . 'instaViewLinkAction.php';
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$ivLinkAction = new instaViewLinkAction();
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$url = $ivLinkAction->getViewLink($documentId, 'document');
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}
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// Get the url to the thumbnail and render it
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// Ensure url has correct slashes
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$sHostPath = KTUtil::kt_url();
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$plugin_path = KTPluginUtil::getPluginPath('thumbnails.generator.processor.plugin');
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$thumbnailUrl = $plugin_path . 'thumbnail_view.php?documentId='.$documentId;
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$thumbnailUrl = str_replace('\\', '/', $thumbnailUrl);
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$thumbnailUrl = str_replace(KT_DIR, $sHostPath, $thumbnailUrl);
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$oTemplate->setData(array(
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'thumbnail' => $thumbnailUrl,
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'url' => $url
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));
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return $oTemplate->render();
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}
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public function get_width($documentId){
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global $default;
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$varDir = $default->varDirectory;
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$thumbnailfile = $varDir . '/thumbnails/'.$documentId.'.jpg';
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if(file_exists($thumbnailfile)){
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return 200;
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}
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return 0;
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//$size = getimagesize($thumbnailfile);
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//return $size[0];
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}
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}
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?>
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