[Xpg-xml-commits] CVS: edu/iicm/xpg/transitions/simple WriteChartTransition.java,NONE,1.1

[G?nther B. <br...@us...>]

Update of /cvsroot/xpg-xml/edu/iicm/xpg/transitions/simple
In directory usw-pr-cvs1:/tmp/cvs-serv20099/transitions/simple

Added Files:
	WriteChartTransition.java 
Log Message:
new staff for piechart-example


--- NEW FILE: WriteChartTransition.java ---
/***********************************************************************
 *
 * Copyright (c) 2001 IICM, Graz University of Technology
 * Schiesstattgasse 4a, A-8010 Graz, Austria.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License (LGPL)
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 * 
 * This program 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 ***********************************************************************/


package edu.iicm.xpg.transitions.simple;

import edu.iicm.xpg.statemachine.Transition;
import edu.iicm.xpg.statemachine.State;
import edu.iicm.xpg.statemachine.StateMachine;
import edu.iicm.xpg.statemachine.Input;
import edu.iicm.xpg.statemachine.XMLInput;
import edu.iicm.xpg.statemachine.XMLElement;
import edu.iicm.xpg.statemachine.DataObject;
import edu.iicm.xpg.statemachine.Const;

import edu.iicm.xpg.util.Debug;

import net.sourceforge.chart2d.Chart2DProperties;
import net.sourceforge.chart2d.GraphProperties;
import net.sourceforge.chart2d.GraphChart2DProperties;
import net.sourceforge.chart2d.Dataset;
import net.sourceforge.chart2d.PieChart2DProperties;
import net.sourceforge.chart2d.PieChart2D;
import net.sourceforge.chart2d.LBChart2D;

import java.util.Vector;
import java.util.Enumeration;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import java.awt.Dimension;
import java.awt.Toolkit;

//----------------------------------------------------------------------
/**
 * @author Guenther Brand
 * @version $Revision: 1.1 $
 */

public class WriteChartTransition implements Transition
{

//----------------------------------------------------------------------
/**
 * @param input the input that triggered this transition
 * @param from_state the start state for this transition
 * @param to_state the destination state for this transition
 * @param machine the state machine that this transition belongs to
 * @param data user defined data
 * @return 
 * @exception Exception whatever an implementation can throw
 */

  public String transitionTriggered(Input input,State from_state,State to_state,
                                    StateMachine machine,DataObject data)
    throws Exception
  {
    StringBuffer result = (StringBuffer)data.getObject(Const.RESULT_BUFFER);
    Vector list_items = (Vector)data.removeObject("list items");
    String list_title = ((XMLElement)data.removeObject("title")).getValue();
    String chart_type = data.getXMLElement().getAttributes().getValue("chart");
    String chart_filename = list_title.trim();

    result.append("\n<h2>" + list_title + "<h2>\n");

    //<-- Begin Chart2D configuration -->
    //Configure chart properties
    Chart2DProperties chart2DProps = new Chart2DProperties();
    chart2DProps.setChartTitleText(list_title);

    if (chart_type.equals("pie"))
    {
	//Configure graph properties
	Dataset dataset = new Dataset (list_items.size(), 1, 1);

	String[] legendLabels = new String[list_items.size()];

	for (int idx = 0; idx < list_items.size(); idx++)
	{
	    String[] item = (String[])list_items.get(idx);
	    legendLabels[idx] = item[0];
	    String value = item[1];
	    dataset.set(idx, 0, 0, new Float(value).floatValue());
	}

	PieChart2DProperties pieChart2DProps =
	  new PieChart2DProperties (chart2DProps, dataset);
	pieChart2DProps.setLegendLabelsTexts (legendLabels);
	PieChart2D chart2D = new PieChart2D (pieChart2DProps);
	//<-- End Chart2D configuration -->

	JFrame frame = new JFrame();
	frame.getContentPane().add (chart2D);  //Add Chart2D to GUI
	frame.setTitle (list_title);
	frame.pack();
	Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
	frame.setLocation ( (screenSize.width - frame.getSize().width) / 2,
			    (screenSize.height - frame.getSize().height) / 2 );

	ImageIO.write(chart2D.getImage(), "PNG", new File(chart_filename));
    }

    else if (chart_type.equals("line"))
    {
	//Configure graph properties
	Dataset dataset = new Dataset(1, list_items.size(), 1);

	String[] axisLabels = new String[list_items.size()];

	for (int idx = 0; idx < list_items.size(); idx++)
	{
	    String[] item = (String[])list_items.get(idx);
	    axisLabels[idx] = item[0];
	    String value = item[1];
	    dataset.set(0, idx, 0, new Float(value).floatValue());
	}

	GraphProperties graphProps = new GraphProperties (dataset);
	graphProps.setGraphBarsExistence (false);
	graphProps.setGraphLinesExistence (true);
	graphProps.setGraphLinesFillInterior (true);
	graphProps.setGraphAllowComponentAlignment (true);
	graphProps.setGraphBetweenComponentsGapExistence (false);

	//Configure graph chart properties
	GraphChart2DProperties graphChart2DProps =
	    new GraphChart2DProperties (chart2DProps, graphProps);
	graphChart2DProps.setLabelsAxisLabelsTexts (axisLabels);
	graphChart2DProps.setLabelsAxisTicksAlignment (graphChart2DProps.CENTERED);

	//Configure chart
	LBChart2D chart2D = new LBChart2D (graphChart2DProps);
	//<-- End Chart2D configuration -->

	JFrame frame = new JFrame();
	frame.getContentPane().add (chart2D);  //Add Chart2D to GUI
	frame.setTitle (list_title);
	frame.pack();
	Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
	frame.setLocation ( (screenSize.width - frame.getSize().width) / 2,
			    (screenSize.height - frame.getSize().height) / 2 );

	ImageIO.write(chart2D.getImage(), "PNG", new File(chart_filename));
    }

    result.append("\n<img href=\"" + chart_filename + "\">\n");

    return(null);
  }
}