001/* 002 * (C) Copyright 2006-2013 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Vladimir Pasquier <vpasquier@nuxeo.com> 018 * Antoine Taillefer <ataillefer@nuxeo.com> 019 * 020 */ 021package org.nuxeo.ecm.platform.thumbnail.factories; 022 023import static org.nuxeo.ecm.platform.thumbnail.ThumbnailConstants.ANY_TO_THUMBNAIL_CONVERTER_NAME; 024 025import java.io.File; 026import java.io.IOException; 027import java.io.Serializable; 028import java.util.HashMap; 029import java.util.Map; 030 031import javax.servlet.ServletContext; 032 033import org.apache.commons.logging.Log; 034import org.apache.commons.logging.LogFactory; 035import org.nuxeo.ecm.core.api.Blob; 036import org.nuxeo.ecm.core.api.Blobs; 037import org.nuxeo.ecm.core.api.CoreSession; 038import org.nuxeo.ecm.core.api.DocumentModel; 039import org.nuxeo.ecm.core.api.NuxeoException; 040import org.nuxeo.ecm.core.api.PropertyException; 041import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 042import org.nuxeo.ecm.core.api.thumbnail.ThumbnailFactory; 043import org.nuxeo.ecm.core.convert.api.ConversionService; 044import org.nuxeo.ecm.platform.mimetype.interfaces.MimetypeRegistry; 045import org.nuxeo.ecm.platform.thumbnail.ThumbnailConstants; 046import org.nuxeo.ecm.platform.types.adapter.TypeInfo; 047import org.nuxeo.ecm.platform.web.common.ServletHelper; 048import org.nuxeo.runtime.api.Framework; 049 050/** 051 * Default thumbnail factory for all non folderish documents Return the main blob converted in thumbnail or get the 052 * document big icon as a thumbnail 053 * 054 * @since 5.7 055 */ 056public class ThumbnailDocumentFactory implements ThumbnailFactory { 057 058 private static final Log log = LogFactory.getLog(ThumbnailDocumentFactory.class); 059 060 @Override 061 public Blob getThumbnail(DocumentModel doc, CoreSession session) { 062 Blob thumbnailBlob = null; 063 try { 064 if (doc.hasFacet(ThumbnailConstants.THUMBNAIL_FACET)) { 065 thumbnailBlob = (Blob) doc.getPropertyValue(ThumbnailConstants.THUMBNAIL_PROPERTY_NAME); 066 } 067 } catch (PropertyException e) { 068 log.warn("Could not fetch the thumbnail blob", e); 069 } 070 if (thumbnailBlob == null) { 071 thumbnailBlob = getDefaultThumbnail(doc); 072 } 073 return thumbnailBlob; 074 } 075 076 @Override 077 public Blob computeThumbnail(DocumentModel doc, CoreSession session) { 078 // TODO: convert non pix attachment 079 // Image converter before thumbnail converter 080 // params.put("targetFilePath", "readyToThumbnail.png"); 081 // BlobHolder bh = conversionService.convertToMimeType( 082 // ThumbnailConstants.THUMBNAIL_MIME_TYPE, blobHolder, 083 // params); 084 // params.clear(); 085 ConversionService conversionService; 086 Blob thumbnailBlob = null; 087 try { 088 conversionService = Framework.getService(ConversionService.class); 089 BlobHolder bh = doc.getAdapter(BlobHolder.class); 090 if (bh != null) { 091 Map<String, Serializable> params = new HashMap<String, Serializable>(); 092 // Thumbnail converter 093 params.put(ThumbnailConstants.THUMBNAIL_SIZE_PARAMETER_NAME, ThumbnailConstants.THUMBNAIL_DEFAULT_SIZE); 094 bh = conversionService.convert(ANY_TO_THUMBNAIL_CONVERTER_NAME, bh, params); 095 if (bh != null) { 096 thumbnailBlob = bh.getBlob(); 097 } 098 } 099 } catch (NuxeoException e) { 100 log.warn("Cannot compute document thumbnail", e); 101 } 102 return thumbnailBlob; 103 } 104 105 protected Blob getDefaultThumbnail(DocumentModel doc) { 106 if (doc == null) { 107 return null; 108 } 109 TypeInfo docType = doc.getAdapter(TypeInfo.class); 110 String iconPath = docType.getBigIcon(); 111 if (iconPath == null) { 112 iconPath = docType.getIcon(); 113 } 114 if (iconPath == null) { 115 return null; 116 } 117 118 ServletContext servletContext = ServletHelper.getServletContext(); 119 String path = servletContext.getRealPath(iconPath); 120 if (path == null) { 121 return null; 122 } 123 124 try { 125 File iconFile = new File(path); 126 if (iconFile.exists()) { 127 String mimeType = servletContext.getMimeType(path); 128 if (mimeType == null) { 129 MimetypeRegistry mimetypeRegistry = Framework.getService(MimetypeRegistry.class); 130 mimeType = mimetypeRegistry.getMimetypeFromFilename(iconPath); 131 } 132 return Blobs.createBlob(iconFile, mimeType); 133 } 134 } catch (IOException e) { 135 log.warn(String.format("Could not fetch the thumbnail blob from icon path '%s'", iconPath), e); 136 } 137 138 return null; 139 } 140 141}