001/* 002 * (C) Copyright 2011 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 * rlegall 018 */ 019package org.nuxeo.ecm.user.center.profile.listeners; 020 021import static org.nuxeo.ecm.core.api.event.DocumentEventTypes.BEFORE_DOC_UPDATE; 022import static org.nuxeo.ecm.user.center.profile.UserProfileConstants.USER_PROFILE_AVATAR_FIELD; 023import static org.nuxeo.ecm.user.center.profile.UserProfileConstants.USER_PROFILE_FACET; 024 025import java.io.Serializable; 026 027import org.nuxeo.ecm.core.api.Blob; 028import org.nuxeo.ecm.core.api.DocumentModel; 029import org.nuxeo.ecm.core.api.PropertyException; 030import org.nuxeo.ecm.core.event.Event; 031import org.nuxeo.ecm.core.event.EventListener; 032import org.nuxeo.ecm.core.event.impl.DocumentEventContext; 033import org.nuxeo.ecm.platform.picture.api.ImageInfo; 034import org.nuxeo.ecm.platform.picture.api.ImagingService; 035import org.nuxeo.runtime.api.Framework; 036 037/** 038 * @author rlegall Listener to handle the maximum dimensions of the avatar picture. This listener is triggered on 039 * DocumentEventTypes.BEFORE_DOC_UPDATE events. It verifies if the picture width is above 300 pixels and its 040 * height above 200. In that case, the picture saved in the rich profile is a resized version of it which fits 041 * those constrains. 042 */ 043public class ResizeAvatarPictureListener implements EventListener { 044 045 protected static final int RESIZED_IMAGE_WIDTH = 300; 046 047 protected static final int RESIZED_IMAGE_HEIGHT = 200; 048 049 @Override 050 public void handleEvent(Event event) { 051 052 if (isBeforeUpdate(event)) { 053 054 DocumentEventContext ctx = (DocumentEventContext) event.getContext(); 055 DocumentModel doc = ctx.getSourceDocument(); 056 057 if (doc.hasFacet(USER_PROFILE_FACET)) { 058 Blob image = (Blob) doc.getPropertyValue(USER_PROFILE_AVATAR_FIELD); 059 if (image != null) { 060 resizeAvatar(doc, image); 061 } 062 } 063 } 064 } 065 066 protected boolean isBeforeUpdate(Event event) { 067 return BEFORE_DOC_UPDATE.equals(event.getName()) && (event.getContext() instanceof DocumentEventContext); 068 } 069 070 protected void resizeAvatar(DocumentModel doc, Blob avatarImage) throws PropertyException { 071 ImagingService service = Framework.getService(ImagingService.class); 072 ImageInfo info = service.getImageInfo(avatarImage); 073 int width = info.getWidth(); 074 int height = info.getHeight(); 075 float wScale = (float) RESIZED_IMAGE_WIDTH / width; 076 float hscale = (float) RESIZED_IMAGE_HEIGHT / height; 077 float scale = Math.min(wScale, hscale); 078 079 if (scale < 1) { 080 avatarImage = service.resize(avatarImage, "jpg", (int) (width * scale), (int) (height * scale), 081 info.getDepth()); 082 avatarImage.setMimeType("image/jpeg");// XXX : Should be automatic 083 doc.setPropertyValue(USER_PROFILE_AVATAR_FIELD, (Serializable) avatarImage); 084 } 085 } 086 087}