001/*
002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id$
018 *
019 */
020package org.nuxeo.ecm.platform.pictures.tiles.api.adapter;
021
022import java.util.Map;
023import java.util.concurrent.ConcurrentHashMap;
024
025import org.apache.commons.logging.Log;
026import org.apache.commons.logging.LogFactory;
027import org.nuxeo.ecm.core.api.DocumentModel;
028import org.nuxeo.ecm.platform.pictures.tiles.api.PictureTiles;
029import org.nuxeo.ecm.platform.pictures.tiles.api.PictureTilingService;
030import org.nuxeo.ecm.platform.pictures.tiles.api.imageresource.DocumentImageResource;
031import org.nuxeo.ecm.platform.pictures.tiles.api.imageresource.ImageResource;
032import org.nuxeo.runtime.api.Framework;
033
034/**
035 * Default implementation for the PictureTilesAdapter. This implementation simply uses a xPath to get the target blob.
036 *
037 * @author tiry
038 */
039public class PictureTilesAdapterImpl implements PictureTilesAdapter {
040
041    protected String xPath;
042
043    protected DocumentModel doc;
044
045    protected String fileName;
046
047    protected Map<String, PictureTiles> tiles = new ConcurrentHashMap<String, PictureTiles>();
048
049    protected static PictureTilingService pts;
050
051    protected static final Log log = LogFactory.getLog(PictureTilesAdapterImpl.class);
052
053    public PictureTilesAdapterImpl(DocumentModel doc, String xPath) {
054        this.xPath = xPath;
055        this.doc = doc;
056    }
057
058    public PictureTilesAdapterImpl(DocumentModel doc) {
059        this(doc, null);
060    }
061
062    protected ImageResource getResource() {
063        DocumentImageResource res = new DocumentImageResource(doc, xPath);
064        if (fileName != null) {
065            res.setFileName(fileName);
066        }
067        return res;
068    }
069
070    protected PictureTilingService getService() {
071        if (pts == null) {
072            pts = Framework.getLocalService(PictureTilingService.class);
073        }
074        return pts;
075    }
076
077    public PictureTiles getTiles(int tileWidth, int tileHeight, int maxTiles) {
078
079        String key = tileWidth + "-" + tileHeight + "-" + maxTiles;
080
081        if (!tiles.containsKey(key)) {
082            PictureTiles tile = getService().getTiles(getResource(), tileWidth, tileHeight, maxTiles, 0, 0, false);
083            tiles.put(key, tile);
084        }
085        return tiles.get(key);
086    }
087
088    public void cleanup() {
089        if (tiles == null) {
090            return;
091        }
092        for (String k : tiles.keySet()) {
093            tiles.get(k).release();
094        }
095        tiles = new ConcurrentHashMap<String, PictureTiles>();
096    }
097
098    public String getXPath() {
099        return xPath;
100    }
101
102    public void setXPath(String path) {
103        xPath = path;
104    }
105
106    public DocumentModel getDoc() {
107        return doc;
108    }
109
110    public void setDoc(DocumentModel doc) {
111        this.doc = doc;
112    }
113
114    public void setFileName(String fileName) {
115        this.fileName = fileName;
116    }
117
118}