JFreeData.java

package org.jboss.seam.example.pdf;

import org.jboss.seam.annotations.*;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.awt.geom.Rectangle2D;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.LegendItemCollection;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.HorizontalAlignment;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;

@Name("jfree")
public class JFreeData {

    public JFreeChart getChart() {
        return createChart(getDataset());
    }

    public CategoryDataset getDataset() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        dataset.addValue(81.0, "Against all torture", "Italy");
        dataset.addValue(72.0, "Against all torture", "Great Britain");
        dataset.addValue(58.0, "Against all torture", "USA");
        dataset.addValue(48.0, "Against all torture", "Israel");
        dataset.addValue(43.0, "Against all torture", "Russia");
        dataset.addValue(23.0, "Against all torture", "India");
        dataset.addValue(59.0, "Against all torture", "Average (*)");


	dataset.addValue(5.0, "-", "Italy");
	dataset.addValue(4.0, "-", "Great Britain");
	dataset.addValue(6.0, "-", "USA");
	dataset.addValue(9.0, "-", "Israel");
	dataset.addValue(20.0, "-", "Russia");
	dataset.addValue(45.0, "-", "India");
	dataset.addValue(12.0, "-", "Average (*)");
	
	dataset.addValue(14.0, "Some degree permissible", "Italy");
	dataset.addValue(24.0, "Some degree permissible", "Great Britain");
	dataset.addValue(36.0, "Some degree permissible", "USA");
	dataset.addValue(43.0, "Some degree permissible", "Israel");
	dataset.addValue(37.0, "Some degree permissible", "Russia");
	dataset.addValue(32.0, "Some degree permissible", "India");
	dataset.addValue(29.0, "Some degree permissible", "Average (*)");
        
        return dataset;
    }
    
    /**
     * Creates a sample chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The chart.
     */
    private JFreeChart createChart(CategoryDataset dataset) {
        
        // create the chart...
        JFreeChart chart = ChartFactory.createStackedBarChart(
            "Public Opinion : Torture of Prisoners", 
            "Country",                    // domain axis label
            "%",                 // range axis label
            dataset,                      // data
            PlotOrientation.HORIZONTAL,   // orientation
            false,                        // include legend
            true,                         // tooltips?
            false                         // URLs?
        );

        // set the background color for the chart...
        chart.setBackgroundPaint(Color.white);
        chart.getTitle().setMargin(2.0, 0.0, 0.0, 0.0);

        TextTitle tt = new TextTitle(
                "Source: http://news.bbc.co.uk/1/hi/world/6063386.stm",
                new Font("Dialog", Font.PLAIN, 11));
        tt.setPosition(RectangleEdge.BOTTOM);
        tt.setHorizontalAlignment(HorizontalAlignment.RIGHT);
        tt.setMargin(0.0, 0.0, 4.0, 4.0);
        chart.addSubtitle(tt);

        TextTitle t = new TextTitle(
                "(*) Across 27,000 respondents in 25 countries",
                new Font("Dialog", Font.PLAIN, 11));
        t.setPosition(RectangleEdge.BOTTOM);
        t.setHorizontalAlignment(HorizontalAlignment.RIGHT);
        t.setMargin(4.0, 0.0, 2.0, 4.0);
        chart.addSubtitle(t);

        // get a reference to the plot for further customisation...
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        LegendItemCollection items = new LegendItemCollection();
        items.add(new LegendItem("Against all torture", null, null, null, 
                new Rectangle2D.Double(-6.0, -3.0, 12.0, 6.0), Color.green));
        items.add(new LegendItem("Some degree permissible", null, null, null, 
                new Rectangle2D.Double(-6.0, -3.0, 12.0, 6.0), Color.red));
        plot.setFixedLegendItems(items);
        plot.setInsets(new RectangleInsets(5, 5, 5, 20));
        LegendTitle legend = new LegendTitle(plot);
        legend.setPosition(RectangleEdge.BOTTOM);
        chart.addSubtitle(legend);
        
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setDomainGridlinesVisible(true);
        plot.setRangeGridlinePaint(Color.white);
        
        // set the range axis to display integers only...
        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        rangeAxis.setUpperMargin(0.0);
        
        // disable bar outlines...
        BarRenderer renderer = (BarRenderer) plot.getRenderer();
        renderer.setDrawBarOutline(false);
        
        // set up gradient paints for series...
        GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
        Paint gp1 = new Color(0, 0, 0, 0);
        GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
        //renderer.setSeriesPaint(0, gp0);
	renderer.setSeriesPaint(0, Color.green);
        renderer.setSeriesPaint(1, gp1);
        //renderer.setSeriesPaint(2, gp2);
	renderer.setSeriesPaint(2, Color.red);
        
        return chart;        
    }
}