ws.moor.bt.grapher.ChartBuilder.java Source code

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Here is the source code for ws.moor.bt.grapher.ChartBuilder.java

Source

/*
 * BitThief - A Free Riding BitTorrent Client
 * Copyright (C) 2006 Patrick Moor <patrick@moor.ws>
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

package ws.moor.bt.grapher;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.FixedMillisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;

import java.awt.BasicStroke;
import java.awt.Color;
import java.text.SimpleDateFormat;

/**
 * TODO(pmoor): Javadoc
 */
public class ChartBuilder {

    private final String chartName;
    private final TimeSeriesCollection timeSeries;

    private String valueAxisLabel = "Value";
    private String timeAxisLabel = "Time";
    private boolean showLegend = true;

    public ChartBuilder(String chartName) {
        this.chartName = chartName;
        timeSeries = new TimeSeriesCollection();
    }

    public void addDataset(String name, CSVStream stream) {
        TimeSeries series = constructSeries(name, stream);
        timeSeries.addSeries(series);
    }

    public void addDerivedDataset(String name, CSVStream stream) {
        TimeSeries series = constructSeries(name, stream);
        timeSeries.addSeries(MovingDerivative.createDerivative(series, 300 * 1000));
    }

    public void showLegend(boolean show) {
        showLegend = show;
    }

    private TimeSeries constructSeries(String name, CSVStream stream) {
        TimeSeries series = new TimeSeries(name, FixedMillisecond.class);
        while (stream.hasMoreEntries()) {
            CSVEntry entry = stream.nextEntry();
            series.addOrUpdate(new FixedMillisecond(entry.getDate()), entry.getValue());
        }
        return series;
    }

    public JFreeChart getChart() {
        JFreeChart chart = ChartFactory.createTimeSeriesChart(chartName, timeAxisLabel, valueAxisLabel, timeSeries,
                showLegend && (timeSeries.getSeriesCount() > 1), false, false);
        chart.setBackgroundPaint(Color.white);

        XYPlot plot = chart.getXYPlot();
        plot.setBackgroundPaint(Color.white);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
        plot.setDomainCrosshairVisible(true);
        plot.setRangeCrosshairVisible(true);

        plot.getRenderer().setSeriesPaint(0, Color.black);
        plot.getRenderer().setSeriesStroke(0, new BasicStroke(1.0f));
        plot.getRenderer().setSeriesPaint(1, Color.black);
        plot.getRenderer().setSeriesStroke(1, new BasicStroke(2.0f));
        plot.getRenderer().setSeriesPaint(2, Color.black);
        plot.getRenderer().setSeriesStroke(2, new BasicStroke(0.1f));

        DateAxis axis = (DateAxis) plot.getDomainAxis();
        axis.setDateFormatOverride(new SimpleDateFormat("HH:mm:ss"));

        return chart;
    }

    public void setValueAxisLabel(String valueAxisLabel) {
        this.valueAxisLabel = valueAxisLabel;
    }

    public void setTimeAxisLabel(String timeAxisLabel) {
        this.timeAxisLabel = timeAxisLabel;
    }
}