org.yccheok.jstock.gui.charting.DynamicChart.java Source code

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Here is the source code for org.yccheok.jstock.gui.charting.DynamicChart.java

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/*
 * JStock - Free Stock Market Software
 * Copyright (C) 2010 Yan Cheng CHEOK <yccheok@yahoo.com>
 *
 * 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 org.yccheok.jstock.gui.charting;

import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.JDialog;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.labels.StandardXYToolTipGenerator;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.general.SeriesException;
import org.jfree.data.time.Second;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.yccheok.jstock.internationalization.GUIBundle;

/**
 *
 * @author yccheok
 */
public class DynamicChart {
    /** Creates new form DynamicChart */
    public DynamicChart() {
        this.price = new TimeSeries("Price");
        // Sets the maximumItemAge attribute, which specifies the maximum age of data items in the series
        // (in terms of the RegularTimePeriod type used by this series). Whenever a new data value is
        // added, any data items that are older than the limit specified by maximumItemAge are automatically
        // discarded
        // Maximum 2 hours.
        this.price.setMaximumItemAge(2 * 60 * 60);

        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(this.price);

        JFreeChart freeChart = ChartFactory.createTimeSeriesChart(null, null, null, dataset, false, true, false);

        freeChart.setAntiAlias(true);
        while (freeChart.getSubtitleCount() > 0) {
            freeChart.removeSubtitle(freeChart.getSubtitle(0));
        }

        // Due to limited spacing, we remove all information regarding x and y axis
        // as well.
        XYPlot plot = freeChart.getXYPlot();
        plot.getRangeAxis().setVisible(false);
        plot.getDomainAxis().setVisible(false);

        XYItemRenderer renderer1 = plot.getRenderer();
        renderer1.setBaseToolTipGenerator(
                new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
                        new SimpleDateFormat("h:mm:ss a"), new DecimalFormat("0.00#")));

        org.yccheok.jstock.charting.Utils.applyChartTheme(freeChart);

        // Disable zoom.
        chartPanel = new ChartPanel(freeChart, true, true, true, false, true);
        chartPanel.setMouseZoomable(false);
    }

    public ChartPanel getChartPanel() {
        return chartPanel;
    }

    public void showNewJDialog(java.awt.Frame parent, String title) {
        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(this.price);

        JFreeChart freeChart = ChartFactory.createTimeSeriesChart(title, GUIBundle.getString("DynamicChart_Date"),
                GUIBundle.getString("DynamicChart_Price"), dataset, true, true, false);

        freeChart.setAntiAlias(true);

        XYPlot plot = freeChart.getXYPlot();
        NumberAxis rangeAxis1 = (NumberAxis) plot.getRangeAxis();
        DecimalFormat format = new DecimalFormat("00.00");
        rangeAxis1.setNumberFormatOverride(format);

        XYItemRenderer renderer1 = plot.getRenderer();
        renderer1.setBaseToolTipGenerator(
                new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
                        new SimpleDateFormat("h:mm:ss a"), new DecimalFormat("0.00#")));

        org.yccheok.jstock.charting.Utils.applyChartTheme(freeChart);

        ChartPanel _chartPanel = new ChartPanel(freeChart, true, true, true, true, true);
        JDialog dialog = new JDialog(parent, title, false);
        dialog.getContentPane().add(_chartPanel, java.awt.BorderLayout.CENTER);
        dialog.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        final java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        dialog.setBounds((screenSize.width - 750) >> 1, (screenSize.height - 600) >> 1, 750, 600);
        dialog.setVisible(true);
    }

    public void addPriceObservation(long timestamp, double y) {
        // There must be at least an item in price. If not, ArrayIndexOutOfBoundsException
        // will be thrown, when getNextTimePeriod is being called.
        final int count = this.price.getItemCount();

        if (count > 0) {
            final Date nextStartDate = this.price.getTimePeriod(count - 1).getStart();
            // 10 seconds interval for every point.
            if ((timestamp - nextStartDate.getTime()) < 10000) {
                return;
            }
        }

        Second second = new Second(new Date(timestamp));

        try {
            this.price.add(second, y);
        } catch (SeriesException exp) {
            log.error(null, exp);
        }
    }

    private final TimeSeries price;
    private final ChartPanel chartPanel;
    private static final Log log = LogFactory.getLog(DynamicChart.class);
}