[Pfc-prolog-cvs] prolix/src/org/asturlinux/frade/prolix/web/servlets TreeServlet.java,1.4,1.5

[<iva...@us...>]

Update of /cvsroot/pfc-prolog/prolix/src/org/asturlinux/frade/prolix/web/servlets
In directory sc8-pr-cvs1:/tmp/cvs-serv17322/src/org/asturlinux/frade/prolix/web/servlets

Modified Files:
	TreeServlet.java 
Log Message:
Added batik to project. Modified servlet to transform SVG in JPEG and return image - and web page to this change

Index: TreeServlet.java
===================================================================
RCS file: /cvsroot/pfc-prolog/prolix/src/org/asturlinux/frade/prolix/web/servlets/TreeServlet.java,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** TreeServlet.java	14 Aug 2003 22:15:36 -0000	1.4
--- TreeServlet.java	18 Aug 2003 18:30:57 -0000	1.5
***************
*** 1,2 ****
--- 1,23 ----
+ /**
+  *
+  * Copyright 2003 Ivan Frade
+  * 
+  * This file is part of Prolix.
+  *
+  * Prolix is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License as published by
+  * the Free Software Foundation; either version 2 of the License, or
+  * (at your option) any later version.
+  *
+  * Prolix is distributed in the hope that it will be useful,
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  * GNU General Public License for more details.
+  *
+  * You should have received a copy of the GNU General Public License
+  * along with Prolix; if not, write to the Free Software
+  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+  *
+  **/
  package org.asturlinux.frade.prolix.web.servlets;
  
***************
*** 8,13 ****
  import java.io.IOException;
  import javax.servlet.http.HttpSession;
! import java.io.PrintWriter;
  import javax.servlet.http.HttpServlet;
  
  /**
--- 29,40 ----
  import java.io.IOException;
  import javax.servlet.http.HttpSession;
! //import java.io.PrintWriter;
  import javax.servlet.http.HttpServlet;
+ import java.io.OutputStream;
+ import org.apache.batik.transcoder.image.JPEGTranscoder;
+ import org.apache.batik.transcoder.TranscoderInput;
+ import org.apache.batik.transcoder.TranscoderOutput;
+ import org.apache.batik.transcoder.TranscoderException;
+ import java.io.StringReader;
  
  /**
***************
*** 26,37 ****
  	HttpSession session = request.getSession(true);
  	CurrentStateBean bean = (CurrentStateBean)session.getAttribute("prologData");
! 
! 	response.setContentType("image/svg+xml");
! 	PrintWriter out = response.getWriter();
  	SvgGenerator comeOn = new SvgGenerator();
! 	if (bean.getCurrentResult() == null)
! 	    out.println("You have only a query loaded. Try to do an step");
! 	else
! 	    out.println(comeOn.transform(bean.getCurrentResult()));
  
      }
--- 53,85 ----
  	HttpSession session = request.getSession(true);
  	CurrentStateBean bean = (CurrentStateBean)session.getAttribute("prologData");
! 	
! 	//response.setContentType("image/svg+xml");
! 	//PrintWriter out = response.getWriter();
! 	OutputStream out = response.getOutputStream();
! 	response.setContentType("image/jpeg");
  	SvgGenerator comeOn = new SvgGenerator();
! 	if (bean.getCurrentResult() == null) {
! 	    //FIXME send basic image
! 	    //out.println("You have only a query loaded. Try to do an step");
! 	    }
! 	else {
! 	    String svg = comeOn.transform(bean.getCurrentResult());
! 	    JPEGTranscoder transcoder = new JPEGTranscoder();
! 	    transcoder.addTranscodingHint(transcoder.KEY_QUALITY,
! 					  new Float(1));
! 	    transcoder.addTranscodingHint(transcoder.KEY_XML_PARSER_CLASSNAME,"org.apache.xerces.parsers.SAXParser");
! 	    transcoder.addTranscodingHint(transcoder.KEY_WIDTH,
! 					  new Float(400));
! 	    transcoder.addTranscodingHint(transcoder.KEY_HEIGHT,
! 					  new Float(400));
! 	    TranscoderInput input = new TranscoderInput(new StringReader(svg));
! 	    TranscoderOutput output = new TranscoderOutput(out);
! 	    try	{
! 		transcoder.transcode(input,output);
! 	    }catch (TranscoderException te) {
! 		//FIXME
! 		throw new IOException("Error in svg to jpeg transformation");
! 	    }
! 	}
  
      }