org.jfree.chart.renderer.category.LayeredBarRenderer Java Examples

/**
 * Draws the chart with a <code>null</code> info object to make sure that
 * no exceptions are thrown (particularly by code in the renderer).
 */
public void testDrawWithNullInfo() {
    boolean success = false;
    try {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(1.0, "S1", "C1");
        CategoryPlot plot = new CategoryPlot(dataset,
                new CategoryAxis("Category"), new NumberAxis("Value"),
                new LayeredBarRenderer());
        JFreeChart chart = new JFreeChart(plot);
        /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                null);
        success = true;
    }
    catch (NullPointerException e) {
        e.printStackTrace();
        success = false;
    }
    assertTrue(success);
}
 

/**
 * Draws the chart with a <code>null</code> info object to make sure that 
 * no exceptions are thrown (particularly by code in the renderer).
 */
public void testDrawWithNullInfo() {
    boolean success = false;
    try {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(1.0, "S1", "C1");
        CategoryPlot plot = new CategoryPlot(dataset, 
                new CategoryAxis("Category"), new NumberAxis("Value"), 
                new LayeredBarRenderer());
        JFreeChart chart = new JFreeChart(plot);
        /* BufferedImage image = */ chart.createBufferedImage(300, 200, 
                null);
        success = true;
    }
    catch (NullPointerException e) {
        e.printStackTrace();
        success = false;
    }
    assertTrue(success);
}
 

/**
 * Two objects that are equal are required to return the same hashCode.
 */
public void testHashcode() {
    LayeredBarRenderer r1 = new LayeredBarRenderer();
    LayeredBarRenderer r2 = new LayeredBarRenderer();
    assertTrue(r1.equals(r2));
    int h1 = r1.hashCode();
    int h2 = r2.hashCode();
    assertEquals(h1, h2);
}
 

/**
 * Two objects that are equal are required to return the same hashCode. 
 */
public void testHashcode() {
    LayeredBarRenderer r1 = new LayeredBarRenderer();
    LayeredBarRenderer r2 = new LayeredBarRenderer();
    assertTrue(r1.equals(r2));
    int h1 = r1.hashCode();
    int h2 = r2.hashCode();
    assertEquals(h1, h2);
}
 

public JFreeChart getHistogramChart()
{

    double[] hits = this.counter.histogramDataset.getHistogramArray();
    double[] intervals = this.counter.histogramDataset.histogramParameters.histogramIntervals;
    double hitsCount = this.counter.histogramDataset.hits;
    DefaultCategoryDataset datasetNormal = new DefaultCategoryDataset();

    datasetNormal.addValue(0, "a", "          -INF");
    datasetNormal.addValue(0, "b", "          -INF");

    double cumul = 0;
    for (int i = 0; i < intervals.length - 1; i++)
    {
        String intervalName;

        if (i == intervals.length - 2)
        {
            intervalName = "          +INF";
        }
        else
        {
            intervalName = "          " + Double.toString(intervals[i + 1]);
        }

        cumul += hits[i];
        datasetNormal.addValue((100 * hits[i]) / hitsCount, "a", intervalName);
        datasetNormal.addValue((100 * cumul) / hitsCount, "b", intervalName);
    }


    JFreeChart jFreeChart = ChartFactory.createBarChart("", "", "%", datasetNormal, PlotOrientation.VERTICAL, false, false, false);

    CategoryPlot plot = jFreeChart.getCategoryPlot();
    CategoryAxis axis = plot.getDomainAxis();
    LayeredBarRenderer layeredBarRenderer = new LayeredBarRenderer();
    layeredBarRenderer.setSeriesPaint(0, new Color(0, 0, 255, 85));
    layeredBarRenderer.setSeriesPaint(1, new Color(255, 0, 0, 85));
    plot.setRenderer(layeredBarRenderer);

    plot.setRowRenderingOrder(SortOrder.DESCENDING);
    axis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
    axis.setMaximumCategoryLabelWidthRatio(1);

    jFreeChart.setBackgroundPaint(Color.WHITE);
    return jFreeChart;

}
 

private byte[] generateLayeredBarChart (CategoryDataset dataset, int width, int height)
{
	JFreeChart chart = ChartFactory.createBarChart (null, // chart title
			null, // domain axis label
			null, // range axis label
			dataset, // data
			PlotOrientation.VERTICAL, // the plot orientation
			true, // legend
			true, // tooltips
			false // urls
			);

	// set background
	chart.setBackgroundPaint (parseColor (statsManager.getChartBackgroundColor ()));

	// set chart border
	chart.setPadding (new RectangleInsets (10, 5, 5, 5));
	chart.setBorderVisible (true);
	chart.setBorderPaint (parseColor ("#cccccc"));

	// set anti alias
	chart.setAntiAlias (true);

	CategoryPlot plot = (CategoryPlot) chart.getPlot ();

	// disable bar outlines...
	LayeredBarRenderer renderer = new LayeredBarRenderer ();
	renderer.setDrawBarOutline (false);
	renderer.setSeriesBarWidth (0, .6);
	renderer.setSeriesBarWidth (1, .8);
	renderer.setSeriesBarWidth (2, 1.0);
	plot.setRenderer (renderer);

	// for this renderer, we need to draw the first series last...
	plot.setRowRenderingOrder (SortOrder.DESCENDING);

	// set up gradient paints for series...
	GradientPaint gp0 = new GradientPaint (0.0f, 0.0f, Color.blue, 0.0f,
			0.0f, new Color (0, 0, 64));
	GradientPaint gp1 = new GradientPaint (0.0f, 0.0f, Color.green, 0.0f,
			0.0f, new Color (0, 64, 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 (1, gp1);
	renderer.setSeriesPaint (2, gp2);

	CategoryAxis domainAxis = (CategoryAxis) plot.getDomainAxis ();
	domainAxis.setCategoryLabelPositions (CategoryLabelPositions.DOWN_45);
	domainAxis.setLowerMargin (0.0);
	domainAxis.setUpperMargin (0.0);

	BufferedImage img = chart.createBufferedImage (width, height);
	final ByteArrayOutputStream out = new ByteArrayOutputStream();
	try{
		ImageIO.write(img, "png", out);
	}catch(IOException e){
		log.warn("Error occurred while generating SiteStats chart image data", e);
	}
	return out.toByteArray();
}
 

/**
 * Check that the equals() method distinguishes all fields.
 */
public void testEquals() {
    LayeredBarRenderer r1 = new LayeredBarRenderer();
    LayeredBarRenderer r2 = new LayeredBarRenderer();
    assertEquals(r1, r2);
}
 

/**
 * Check that this class implements PublicCloneable.
 */
public void testPublicCloneable() {
    LayeredBarRenderer r1 = new LayeredBarRenderer();
    assertTrue(r1 instanceof PublicCloneable);
}
 

/**
 * Check that the equals() method distinguishes all fields.
 */
public void testEquals() {
    LayeredBarRenderer r1 = new LayeredBarRenderer();
    LayeredBarRenderer r2 = new LayeredBarRenderer();
    assertEquals(r1, r2);
}
 

private byte[] generateLayeredBarChart (CategoryDataset dataset, int width, int height)
{
	JFreeChart chart = ChartFactory.createBarChart (null, // chart title
			null, // domain axis label
			null, // range axis label
			dataset, // data
			PlotOrientation.VERTICAL, // the plot orientation
			true, // legend
			true, // tooltips
			false // urls
			);

	// set background
	chart.setBackgroundPaint (parseColor (statsManager.getChartBackgroundColor ()));

	// set chart border
	chart.setPadding (new RectangleInsets (10, 5, 5, 5));
	chart.setBorderVisible (true);
	chart.setBorderPaint (parseColor ("#cccccc"));

	// set anti alias
	chart.setAntiAlias (true);

	CategoryPlot plot = (CategoryPlot) chart.getPlot ();

	// disable bar outlines...
	LayeredBarRenderer renderer = new LayeredBarRenderer ();
	renderer.setDrawBarOutline (false);
	renderer.setSeriesBarWidth (0, .6);
	renderer.setSeriesBarWidth (1, .8);
	renderer.setSeriesBarWidth (2, 1.0);
	plot.setRenderer (renderer);

	// for this renderer, we need to draw the first series last...
	plot.setRowRenderingOrder (SortOrder.DESCENDING);

	// set up gradient paints for series...
	GradientPaint gp0 = new GradientPaint (0.0f, 0.0f, Color.blue, 0.0f,
			0.0f, new Color (0, 0, 64));
	GradientPaint gp1 = new GradientPaint (0.0f, 0.0f, Color.green, 0.0f,
			0.0f, new Color (0, 64, 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 (1, gp1);
	renderer.setSeriesPaint (2, gp2);

	CategoryAxis domainAxis = (CategoryAxis) plot.getDomainAxis ();
	domainAxis.setCategoryLabelPositions (CategoryLabelPositions.DOWN_45);
	domainAxis.setLowerMargin (0.0);
	domainAxis.setUpperMargin (0.0);

	BufferedImage img = chart.createBufferedImage (width, height);
	final ByteArrayOutputStream out = new ByteArrayOutputStream();
	try{
		ImageIO.write(img, "png", out);
	}catch(IOException e){
		log.warn("Error occurred while generating SiteStats chart image data", e);
	}
	return out.toByteArray();
}