/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License") + you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.openmeetings.servlet.outputhandler;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.io.Writer;
import java.util.Date;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.batik.dom.GenericDOMImplementation;
import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.apache.batik.svggen.SVGGraphics2D;
import org.openmeetings.app.OpenmeetingsVariables;
import org.openmeetings.app.batik.beans.PrintBean;
import org.openmeetings.app.data.basic.Sessionmanagement;
import org.openmeetings.app.data.record.WhiteboardMapToSVG;
import org.openmeetings.app.data.user.Usermanagement;
import org.openmeetings.app.documents.GenerateImage;
import org.openmeetings.app.remote.PrintService;
import org.openmeetings.app.remote.red5.ScopeApplicationAdapter;
import org.openmeetings.utils.math.CalendarPatterns;
import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class ExportToImage extends HttpServlet {
private static final long serialVersionUID = -3535998254746084297L;
private static final Logger log = Red5LoggerFactory.getLogger(
ExportToImage.class, OpenmeetingsVariables.webAppRootKey);
public Sessionmanagement getSessionManagement() {
try {
if (ScopeApplicationAdapter.initComplete) {
ApplicationContext context = WebApplicationContextUtils
.getWebApplicationContext(getServletContext());
return (Sessionmanagement) context.getBean("sessionManagement");
}
} catch (Exception err) {
log.error("[getSessionManagement]", err);
}
return null;
}
public Usermanagement getUserManagement() {
try {
if (ScopeApplicationAdapter.initComplete) {
ApplicationContext context = WebApplicationContextUtils
.getWebApplicationContext(getServletContext());
return (Usermanagement) context.getBean("userManagement");
}
} catch (Exception err) {
log.error("[getUserManagement]", err);
}
return null;
}
public GenerateImage getGenerateImage() {
try {
if (ScopeApplicationAdapter.initComplete) {
ApplicationContext context = WebApplicationContextUtils
.getWebApplicationContext(getServletContext());
return (GenerateImage) context.getBean("generateImage");
}
} catch (Exception err) {
log.error("[getGenerateImage]", err);
}
return null;
}
/*
* (non-Javadoc)
*
* @see
* javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest
* , javax.servlet.http.HttpServletResponse)
*/
@Override
protected void service(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) throws ServletException,
IOException {
try {
if (getUserManagement() == null || getSessionManagement() == null
|| getGenerateImage() == null) {
return;
}
String sid = httpServletRequest.getParameter("sid");
if (sid == null) {
sid = "default";
}
log.debug("sid: " + sid);
String hash = httpServletRequest.getParameter("hash");
if (hash == null) {
hash = "";
}
log.debug("hash: " + hash);
String fileName = httpServletRequest.getParameter("fileName");
if (fileName == null) {
fileName = "file_xyz";
}
String exportType = httpServletRequest.getParameter("exportType");
if (exportType == null) {
exportType = "svg";
}
Long users_id = getSessionManagement().checkSession(sid);
Long user_level = getUserManagement().getUserLevelByID(users_id);
log.debug("users_id: " + users_id);
log.debug("user_level: " + user_level);
if (user_level != null && user_level > 0 && hash != "") {
PrintBean pBean = PrintService.getPrintItemByHash(hash);
// Whiteboard Objects
@SuppressWarnings("rawtypes")
List whiteBoardMap = pBean.getMap();
// Get a DOMImplementation.
DOMImplementation domImpl = GenericDOMImplementation
.getDOMImplementation();
// Create an instance of org.w3c.dom.Document.
// String svgNS = "http://www.w3.org/2000/svg";
String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI;
Document document = domImpl.createDocument(svgNS, "svg", null);
// Get the root element (the 'svg' element).
Element svgRoot = document.getDocumentElement();
// Set the width and height attributes on the root 'svg'
// element.
svgRoot.setAttributeNS(null, "width", "" + pBean.getWidth());
svgRoot.setAttributeNS(null, "height", "" + pBean.getHeight());
log.debug("pBean.getWidth(),pBean.getHeight()"
+ pBean.getWidth() + "," + pBean.getHeight());
// Create an instance of the SVG Generator.
SVGGraphics2D svgGenerator = new SVGGraphics2D(document);
svgGenerator = WhiteboardMapToSVG.getInstance()
.convertMapToSVG(svgGenerator, whiteBoardMap);
// Finally, stream out SVG to the standard output using
// UTF-8 encoding.
boolean useCSS = true; // we want to use CSS style attributes
// Writer out = new OutputStreamWriter(System.out, "UTF-8");
if (exportType.equals("svg")) {
// OutputStream out = httpServletResponse.getOutputStream();
// httpServletResponse.setContentType("APPLICATION/OCTET-STREAM");
// httpServletResponse.setHeader("Content-Disposition","attachment; filename=\""
// + requestedFile + "\"");
Writer out = httpServletResponse.getWriter();
svgGenerator.stream(out, useCSS);
} else if (exportType.equals("png") || exportType.equals("jpg")
|| exportType.equals("gif") || exportType.equals("tif")
|| exportType.equals("pdf")) {
String current_dir = getServletContext().getRealPath("/");
String working_dir = current_dir + OpenmeetingsVariables.UPLOAD_TEMP_DIR
+ File.separatorChar;
String requestedFileSVG = fileName + "_"
+ CalendarPatterns.getTimeForStreamId(new Date())
+ ".svg";
String resultFileName = fileName + "_"
+ CalendarPatterns.getTimeForStreamId(new Date())
+ "." + exportType;
log.debug("current_dir: " + current_dir);
log.debug("working_dir: " + working_dir);
log.debug("requestedFileSVG: " + requestedFileSVG);
log.debug("resultFileName: " + resultFileName);
File svgFile = new File(working_dir + requestedFileSVG);
File resultFile = new File(working_dir + resultFileName);
log.debug("svgFile: " + svgFile.getAbsolutePath());
log.debug("resultFile: " + resultFile.getAbsolutePath());
log.debug("svgFile P: " + svgFile.getPath());
log.debug("resultFile P: " + resultFile.getPath());
FileWriter out = new FileWriter(svgFile);
svgGenerator.stream(out, useCSS);
// Get file and handle download
RandomAccessFile rf = new RandomAccessFile(
resultFile.getAbsoluteFile(), "r");
httpServletResponse.reset();
httpServletResponse.resetBuffer();
OutputStream outStream = httpServletResponse
.getOutputStream();
httpServletResponse
.setContentType("APPLICATION/OCTET-STREAM");
httpServletResponse.setHeader("Content-Disposition",
"attachment; filename=\"" + resultFileName + "\"");
httpServletResponse.setHeader("Content-Length",
"" + rf.length());
byte[] buffer = new byte[1024];
int readed = -1;
while ((readed = rf.read(buffer, 0, buffer.length)) > -1) {
outStream.write(buffer, 0, readed);
}
outStream.close();
rf.close();
out.flush();
out.close();
}
}
} catch (Exception er) {
log.error("ERROR ", er);
System.out.println("Error exporting: " + er);
er.printStackTrace();
}
}
}