chartfactory.java

java图形利器

     * @param subTitle displays a subtitle with colour scheme if true
     * @param showDifference  create a new dataset that will show the % 
     *                        difference between the two datasets. 
     *
     * @return A pie chart.
     */
    public static JFreeChart createPieChart(String title,
                                            PieDataset dataset,
                                            PieDataset previousDataset,
                                            int percentDiffForMaxScale,
                                            boolean greenForIncrease,
                                            boolean legend,
                                            boolean tooltips,
                                            boolean urls,
                                            boolean subTitle,
                                            boolean showDifference) {

        PiePlot plot = new PiePlot(dataset);
        plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
        plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));

        if (tooltips) {
            plot.setToolTipGenerator(new StandardPieToolTipGenerator(
                    StandardPieToolTipGenerator.DEFAULT_SECTION_LABEL_FORMAT));
        }
        if (urls) {
            plot.setURLGenerator(new StandardPieURLGenerator());
        }

        List keys = dataset.getKeys();
        DefaultPieDataset series = null;
        if (showDifference) {
            series = new DefaultPieDataset();
        }

        double colorPerPercent = 255.0 / percentDiffForMaxScale;
        for (Iterator it = keys.iterator(); it.hasNext();) {
            Comparable key = (Comparable) it.next();
            Number newValue = dataset.getValue(key);
            Number oldValue = previousDataset.getValue(key);

            if (oldValue == null) {
                if (greenForIncrease) {
                    plot.setSectionPaint(key, Color.green);
                } 
                else {
                    plot.setSectionPaint(key, Color.red);
                }
                if (showDifference) {
                    series.setValue(key + " (+100%)", newValue);
                }
            }
            else {
                double percentChange = (newValue.doubleValue() 
                        / oldValue.doubleValue() - 1.0) * 100.0;
                double shade
                    = (Math.abs(percentChange) >= percentDiffForMaxScale ? 255
                    : Math.abs(percentChange) * colorPerPercent);
                if (greenForIncrease 
                        && newValue.doubleValue() > oldValue.doubleValue()
                        || !greenForIncrease && newValue.doubleValue() 
                        < oldValue.doubleValue()) {
                    plot.setSectionPaint(key, new Color(0, (int) shade, 0));
                }
                else {
                    plot.setSectionPaint(key, new Color((int) shade, 0, 0));
                }
                if (showDifference) {
                    series.setValue(key + " (" + (percentChange >= 0 ? "+" : "") 
                            + NumberFormat.getPercentInstance().format(
                            percentChange / 100.0) + ")", newValue);
                }
            }
        }

        if (showDifference) {
            plot.setDataset(series);
        }

        JFreeChart chart =  new JFreeChart(
            title, JFreeChart.DEFAULT_TITLE_FONT, plot, legend
        );

        if (subTitle) {
            TextTitle subtitle = null;
            subtitle = new TextTitle("Bright " + (greenForIncrease ? "red" 
                    : "green") + "=change >=-" + percentDiffForMaxScale 
                    + "%, Bright " + (!greenForIncrease ? "red" : "green") 
                    + "=change >=+" + percentDiffForMaxScale + "%", 
                    new Font("SansSerif", Font.PLAIN, 10));
            chart.addSubtitle(subtitle);
        }

        return chart;
    }

    /**
     * Creates a ring chart with default settings.
     * <P>
     * The chart object returned by this method uses a {@link RingPlot} 
     * instance as the plot.
     *
     * @param title  the chart title (<code>null</code> permitted).
     * @param dataset  the dataset for the chart (<code>null</code> permitted).
     * @param legend  a flag specifying whether or not a legend is required.
     * @param tooltips  configure chart to generate tool tips?
     * @param urls  configure chart to generate URLs?
     *
     * @return A pie chart.
     */
    public static JFreeChart createRingChart(String title,
                                             PieDataset dataset,
                                             boolean legend,
                                             boolean tooltips,
                                             boolean urls) {

        RingPlot plot = new RingPlot(dataset);
        plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
        plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
        if (tooltips) {
            plot.setToolTipGenerator(new StandardPieToolTipGenerator(
                    StandardPieToolTipGenerator.DEFAULT_SECTION_LABEL_FORMAT));
        }
        if (urls) {
            plot.setURLGenerator(new StandardPieURLGenerator());
        }
        return new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, 
                legend);

    }

    /**
     * Creates a chart that displays multiple pie plots.  The chart object 
     * returned by this method uses a {@link MultiplePiePlot} instance as the
     * plot.
     *
     * @param title  the chart title (<code>null</code> permitted).
     * @param dataset  the dataset (<code>null</code> permitted).
     * @param order  the order that the data is extracted (by row or by column)
     *               (<code>null</code> not permitted).
     * @param legend  include a legend?
     * @param tooltips  generate tooltips?
     * @param urls  generate URLs?
     *
     * @return A chart.
     */
    public static JFreeChart createMultiplePieChart(String title,
                                                    CategoryDataset dataset,
                                                    TableOrder order,
                                                    boolean legend,
                                                    boolean tooltips,
                                                    boolean urls) {

        if (order == null) {
            throw new IllegalArgumentException("Null 'order' argument.");
        }
        MultiplePiePlot plot = new MultiplePiePlot(dataset);
        plot.setDataExtractOrder(order);
        plot.setBackgroundPaint(null);
        plot.setOutlineStroke(null);

        if (tooltips) {
            PieToolTipGenerator tooltipGenerator 
                = new StandardPieToolTipGenerator();
            PiePlot pp = (PiePlot) plot.getPieChart().getPlot();
            pp.setToolTipGenerator(tooltipGenerator);
        }

        if (urls) {
            PieURLGenerator urlGenerator = new StandardPieURLGenerator();
            PiePlot pp = (PiePlot) plot.getPieChart().getPlot();
            pp.setURLGenerator(urlGenerator);
        }

        JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
                plot, legend);

        return chart;

    }

    /**
     * Creates a 3D pie chart using the specified dataset.  The chart object 
     * returned by this method uses a {@link PiePlot3D} instance as the
     * plot.
     *
     * @param title  the chart title (<code>null</code> permitted).
     * @param dataset  the dataset for the chart (<code>null</code> permitted).
     * @param legend  a flag specifying whether or not a legend is required.
     * @param tooltips  configure chart to generate tool tips?
     * @param urls  configure chart to generate URLs?
     *
     * @return A pie chart.
     */
    public static JFreeChart createPieChart3D(String title,
                                              PieDataset dataset,
                                              boolean legend,
                                              boolean tooltips,
                                              boolean urls) {

        PiePlot3D plot = new PiePlot3D(dataset);
        plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
        if (tooltips) {
            plot.setToolTipGenerator(new StandardPieToolTipGenerator());
        }
        if (urls) {
            plot.setURLGenerator(new StandardPieURLGenerator());
        }
        return new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, 
                legend);

    }

    /**
     * Creates a chart that displays multiple pie plots.  The chart object 
     * returned by this method uses a {@link MultiplePiePlot} instance as the
     * plot.
     *
     * @param title  the chart title (<code>null</code> permitted).
     * @param dataset  the dataset (<code>null</code> permitted).
     * @param order  the order that the data is extracted (by row or by column) 
     *               (<code>null</code> not permitted).
     * @param legend  include a legend?
     * @param tooltips  generate tooltips?
     * @param urls  generate URLs?
     *
     * @return A chart.
     */
    public static JFreeChart createMultiplePieChart3D(String title,
                                                      CategoryDataset dataset,
                                                      TableOrder order,
                                                      boolean legend,
                                                      boolean tooltips,
                                                      boolean urls) {

        if (order == null) {
            throw new IllegalArgumentException("Null 'order' argument.");
        }
        MultiplePiePlot plot = new MultiplePiePlot(dataset);
        plot.setDataExtractOrder(order);
        plot.setBackgroundPaint(null);
        plot.setOutlineStroke(null);

        JFreeChart pieChart = new JFreeChart(new PiePlot3D(null));
        TextTitle seriesTitle = new TextTitle("Series Title", 
                new Font("SansSerif", Font.BOLD, 12));
        seriesTitle.setPosition(RectangleEdge.BOTTOM);
        pieChart.setTitle(seriesTitle);
        pieChart.removeLegend();
        pieChart.setBackgroundPaint(null);
        plot.setPieChart(pieChart);

        if (tooltips) {
            PieToolTipGenerator tooltipGenerator 
                = new StandardPieToolTipGenerator();
            PiePlot pp = (PiePlot) plot.getPieChart().getPlot();
            pp.setToolTipGenerator(tooltipGenerator);
        }

        if (urls) {
            PieURLGenerator urlGenerator = new StandardPieURLGenerator();
            PiePlot pp = (PiePlot) plot.getPieChart().getPlot();
            pp.setURLGenerator(urlGenerator);
        }

        JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
                plot, legend);

        return chart;

    }

    /**
     * Creates a bar chart.  The chart object returned by this method uses a 
     * {@link CategoryPlot} instance as the plot, with a {@link CategoryAxis} 
     * for the domain axis, a {@link NumberAxis} as the range axis, and a 
     * {@link BarRenderer} as the renderer.
     *
     * @param title  the chart title (<code>null</code> permitted).
     * @param categoryAxisLabel  the label for the category axis 
     *                           (<code>null</code> permitted).
     * @param valueAxisLabel  the label for the value axis 
     *                        (<code>null</code> permitted).
     * @param dataset  the dataset for the chart (<code>null</code> permitted).
     * @param orientation  the plot orientation (horizontal or vertical)