/******************************************************************************

  * GetPicController.java - The Spring controller that returns a Pic

  * 

  * PicMan - The BuckoSoft Picture Manager in Java

  * Copyright(c) 2008 - Dick Balaska

  * 

  */

 package com.buckosoft.PicMan.web;

 import java.awt.Color;

 import java.awt.Font;

 import java.awt.Graphics2D;

 import java.awt.image.BufferedImage;

 import java.io.IOException;

 import java.io.PrintWriter;

 import java.util.Iterator;

 import javax.imageio.ImageIO;

 import javax.imageio.ImageWriter;

 import javax.imageio.stream.ImageOutputStream;

 import javax.servlet.ServletException;

 import javax.servlet.ServletOutputStream;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.springframework.web.servlet.ModelAndView;

 import com.buckosoft.BSAccount.web.BSAccountPageController;

 import com.buckosoft.BSAccount.web.BSAccountUserWebSession;

 import com.buckosoft.PicMan.business.PicManFacade;

 import com.buckosoft.PicMan.db.DatabaseFacade;

 import com.buckosoft.PicMan.domain.Pic;

 /** The Spring controller that returns a Pic.

  * @author Dick Balaska

  * @since 2008/09/06

  * @see <a href="http://cvs.buckosoft.com/Projects/java/PicMan/PicMan/src/com/buckosoft/PicMan/web/GetPicController.java">GetPicController.java</a>

  */

 public class GetPicController extends BSAccountPageController {

         protected final Log logger = LogFactory.getLog(getClass());

         private DatabaseFacade dbf;

         private PicManFacade pmf;

         /** Set the reference to the PicMan Database

          * @param dbf The DatabaseFacade

          */

         public void setDatabase(DatabaseFacade dbf) { this.dbf = dbf; }

         /** Set the reference to the PicMan API.

          * @param pmf The PicManFacade

          */

         public void setPicMan(PicManFacade pmf) { this.pmf = pmf; }

         /** Spring standard http request handler, returns an image/jpeg

          * @param request The http request

          * @param response The http response

          * @return null

          */ 

         public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)

                         throws ServletException, IOException {

                 BSAccountUserWebSession userWebSession = this.bsAccountMan.getUserWebSession(request);

                 String s;

                 Pic                pic = null;

                 int                width = 1000;

                 int                height = 1000;

                 boolean        slideShow = false;

                 if (!userWebSession.getUser().isRegisteredUser()) {

                         response.setContentType("text/plain");

                         response.sendError(401, "Not logged in");

                         return(null);

                 }

                 s = request.getParameter("w");

                 if (s != null)

                         width = Integer.parseInt(s);

                 s = request.getParameter("h");

                 if (s != null)

                         height = Integer.parseInt(s);

                 s = request.getParameter("ss");

                 if (s != null)

                         slideShow = true;

                 s = request.getParameter("importPic");

                 if (s != null) {

                         pic = new Pic(true, s);

                 }

                 if (pic == null) {

                         s = request.getParameter("pic");

                         if (s == null) {

                                 PrintWriter out = response.getWriter();

                                 out.print("No pic in request");

                                 return(null);

                         }

                         pic = dbf.getPic(s);

                         if (pic == null) {

                                 PrintWriter out = response.getWriter();

                                 out.print("Unknown pic \"" + s + "\"");

                                 return(null);

                         }

                 }

                 BufferedImage bi;

                 bi = pmf.getPicReader().readPic(pic);

                 if (slideShow) {

                         double scale = 2.0;

                         String label = "Hi Marlene";

                         label = pmf.getFilterAsString(pic.getName());

                         logger.info("label:" + label);

                         double scalew = 1.0;

                         if (width != 0)

                                 scalew = (double)width / (double)bi.getWidth();

                         double scaleh = 1.0;

                         if (height != 0)

                                 scaleh = (double)height / (double)bi.getHeight();

                         logger.info("scaleh = " + scaleh + " scalew = " + scalew);

                         if (label != null) {

                                 if (scaleh < 1.0 && scaleh < scalew)

                                         scale /= scaleh;

                                 if (scalew < 1.0 && scalew < scaleh)

                                         scale /= scalew;

                                 logger.info("scale = " + scale);

                                 int xp = 0;

                                 int yp = 0+bi.getHeight() - 3;

                                 Graphics2D g = bi.createGraphics();

                                 Font font = new Font("SansSerif", Font.PLAIN, (int)(12.0*scale));

                                 g.setFont(font);

                                 g.setColor(Color.BLACK);

 //                                g.drawString(label, (int)(xp-1*scale), (int)(yp-1*scale));

 //                                g.drawString(label, (int)(xp-1*scale), (int)(yp+1*scale));

 //                                g.drawString(label, (int)(xp+1*scale), (int)(yp-1*scale));

                                 g.drawString(label, (int)(xp+1*scale), (int)(yp+1*scale));

                                 g.setColor(Color.WHITE);

                                 g.drawString(label, xp,   yp);

                         }

                 }

                 response.setContentType("image/jpeg");

                 ServletOutputStream sos = response.getOutputStream();

                 ImageOutputStream ios = ImageIO.createImageOutputStream(sos);

                 Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("jpg");

                 ImageWriter writer = (ImageWriter)writers.next();

                 writer.setOutput(ios);

                 writer.write(bi);

                 return(null);

         }

 }