com.itemanalysis.jmetrik.graph.histogram.HistogramPanel.java Source code

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Here is the source code for com.itemanalysis.jmetrik.graph.histogram.HistogramPanel.java

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/*
 * Copyright (c) 2012 Patrick Meyer
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package com.itemanalysis.jmetrik.graph.histogram;

import com.itemanalysis.jmetrik.swing.GraphPanel;

import java.awt.*;

import org.apache.log4j.Logger;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYBarPainter;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.ui.RectangleInsets;

public class HistogramPanel extends GraphPanel {

    private HistogramCommand command = null;
    private JFreeChart chart = null;
    private String chartTitle = "";
    private String chartSubtitle = "";
    private String xlabel = "";
    private String ylabel = "";
    private boolean hasGroupingVariable = false;

    static Logger logger = Logger.getLogger("jmetrik-logger");

    public HistogramPanel(HistogramCommand command) {
        this.command = command;
        processCommand();
    }

    public void updateDataset(HistogramChartDataset data) {
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setDataset(data);
    }

    private void processCommand() {
        try {
            chartTitle = command.getFreeOption("title").getString();
            chartSubtitle = command.getFreeOption("subtitle").getString();

            if (command.getFreeOption("groupvar").hasValue()) {
                hasGroupingVariable = true;
            }

            xlabel = command.getFreeOption("variable").getString();
            ylabel = "";
            if (command.getSelectOneOption("yaxis").isValueSelected("freq")) {
                ylabel = "Frequency";
            } else {
                ylabel = "Density";
            }

        } catch (IllegalArgumentException ex) {
            logger.fatal(ex.getMessage(), ex);
            this.firePropertyChange("error", "", "Error - Check log for details.");
        }
    }

    public void setGraph() {
        HistogramChartDataset dataset = null;
        dataset = new HistogramChartDataset();

        chart = HistogramChart.createHistogram(chartTitle, xlabel, //x-axis label
                ylabel, //y-axis label
                dataset, chartOrientation, hasGroupingVariable, //legend
                true, //tooltips
                false //urls
        );

        if (chartSubtitle != null && !"".equals(chartSubtitle)) {
            TextTitle subtitle1 = new TextTitle();
            chart.addSubtitle(subtitle1);
        }

        XYPlot plot = (XYPlot) chart.getPlot();
        if (hasGroupingVariable)
            plot.setForegroundAlpha(0.80f);
        plot.setBackgroundPaint(Color.WHITE);
        plot.setRangeGridlinePaint(Color.LIGHT_GRAY);
        plot.setDomainGridlinePaint(Color.LIGHT_GRAY);
        XYBarRenderer renderer = (XYBarRenderer) plot.getRenderer();
        renderer.setDrawBarOutline(true);
        renderer.setShadowVisible(false);

        //next two lines are temp setting for book
        //these two lines will create a histogram with white bars so it appears as just the bar outline
        //        renderer.setBarPainter(new StandardXYBarPainter());
        //        renderer.setSeriesPaint(0, Color.white);

        ChartPanel panel = new ChartPanel(chart);
        panel.getPopupMenu().addSeparator();
        this.addJpgMenuItem(this, panel.getPopupMenu());
        panel.setPreferredSize(new Dimension(width, height));

        //        //temp setting for book
        //        this.addLocalEPSMenuItem(this, panel.getPopupMenu(), chart);//remove this line for public release versions

        chart.setPadding(new RectangleInsets(20.0, 5.0, 20.0, 5.0));
        this.setBackground(Color.WHITE);
        this.add(panel);

    }

    //    /**
    //     * This method uses the proprietary library EpsGraphics. It is only here
    //     * for producing files for the jMetrik book. It will be disabled in
    //     * public versions of the software.
    //     *
    //     * @param parent
    //     * @param popMenu
    //     * @param chart
    //     */
    //    private void addLocalEPSMenuItem(final Component parent, JPopupMenu popMenu, final JFreeChart chart){
    //        JMenuItem mItem = new JMenuItem("Save as EPS...");
    //        mItem.addActionListener(new ActionListener() {
    //            @Override
    //            public void actionPerformed(ActionEvent e) {
    //                JFileChooser chooser = new JFileChooser();
    //                FileFilter filter1 = new SimpleFilter("eps", "EPS File (*.eps)");
    //                chooser.addChoosableFileFilter(filter1);
    //                int status = chooser.showSaveDialog(parent);
    //                if(status == JFileChooser.APPROVE_OPTION){
    //                    File f = chooser.getSelectedFile();
    //                    String fileName = f.getAbsolutePath().toLowerCase();
    //                    if(!fileName.endsWith("eps")) fileName += ".eps";
    //
    //                    try{
    //                        EpsGraphics2D g = new EpsGraphics2D();
    //                        g.scale(1.0, 1.0);//72dpi
    //                        g.setColorDepth(EpsGraphics2D.GRAYSCALE);
    //                        chart.draw(g,new Rectangle(450, 400));
    //                        Writer out=new FileWriter(new File(fileName));
    //                        out.write(g.toString());
    //                        out.close();
    //                    }catch(IOException ex){
    //                        ex.printStackTrace();
    //                    }
    //                }
    //
    //            }
    //        });
    //        popMenu.addArgument(mItem);
    //    }

}