gsn.charts.GsnChartJfreechart.java Source code

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Here is the source code for gsn.charts.GsnChartJfreechart.java

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/**
* Global Sensor Networks (GSN) Source Code
* Copyright (c) 2006-2014, Ecole Polytechnique Federale de Lausanne (EPFL)
* 
* This file is part of GSN.
* 
* GSN 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 3 of the License, or
* (at your option) any later version.
* 
* GSN 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 GSN.  If not, see <http://www.gnu.org/licenses/>.
* 
* File: src/gsn/charts/GsnChartJfreechart.java
*
* @author Timotee Maret
* @author Ali Salehi
*
*/

package gsn.charts;

import gsn.reports.beans.Data;

import java.awt.Color;
import java.awt.Font;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.TimeZone;

import org.slf4j.LoggerFactory;
import org.slf4j.Logger;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.RectangleInsets;

public class GsnChartJfreechart implements GsnChartIF {

    private static SimpleDateFormat ssdf = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");

    public static transient Logger logger = LoggerFactory.getLogger(GsnChartJfreechart.class);

    private static final Font TICK_FONT = new Font("Helvetica", Font.PLAIN, 7);

    public GsnChartJfreechart() {
    }

    public JFreeChart createChart(Collection<Data> datas) {
        TimeSeries t1 = new TimeSeries("S1");
        Iterator<Data> iter = datas.iterator();
        Data data;
        while (iter.hasNext()) {
            data = iter.next();
            t1.addOrUpdate(RegularTimePeriod.createInstance(Millisecond.class, new Date((Long) data.getP2()),
                    TimeZone.getDefault()), data.getValue());
        }
        XYDataset dataset = new TimeSeriesCollection(t1);
        JFreeChart chart = ChartFactory.createTimeSeriesChart(null, null, null, dataset, false, false, false);
        chart.setAntiAlias(true);
        chart.setTextAntiAlias(true);
        chart.setBackgroundPaint(Color.WHITE);
        //
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setNoDataMessage("No Data to Display");
        plot.setDomainGridlinesVisible(true);
        plot.setBackgroundPaint(Color.WHITE);
        plot.setInsets(new RectangleInsets(5, 14, 0, 5));
        //
        DateAxis axis = (DateAxis) plot.getDomainAxis();
        axis.setDateFormatOverride(ssdf);
        axis.setTickLabelFont(TICK_FONT);
        ValueAxis rangeAxis = plot.getRangeAxis();
        rangeAxis.setTickLabelFont(TICK_FONT);
        //
        return chart;
    }
}