Examples of org.jfree.chart.renderer.category.BarRenderer

Package org.jfree.chart.renderer.category

Examples of org.jfree.chart.renderer.category.BarRenderer

org.jfree.chart.renderer.category.BarRenderer
A {@link CategoryItemRenderer} that draws individual data items as bars.The example shown here is generated by the BarChartDemo1.java program included in the JFreeChart Demo Collection:


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

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        BarRenderer r1 = new BarRenderer();
        r1.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
        r1.setBarPainter(new GradientBarPainter(0.11, 0.22, 0.33));
        BarRenderer r2 = null;
        try {
            r2 = (BarRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
    }

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

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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {


        BarRenderer r1 = new BarRenderer();
        BarRenderer r2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(r1);

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     * Tests each setter method to ensure that it sends an event notification.
     */
    public void testEventNotification() {


        RendererChangeDetector detector = new RendererChangeDetector();
        BarRenderer r1 = new BarRenderer();
        r1.addChangeListener(detector);


        detector.setNotified(false);
        r1.setBasePaint(Color.red);
        assertTrue(detector.getNotified());


    }

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     * Some checks for the getLegendItem() method.
     */
    public void testGetLegendItem() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(21.0, "R1", "C1");
        BarRenderer r = new BarRenderer();
        CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(0, 0);
        assertNotNull(li);
        r.setSeriesVisibleInLegend(0, Boolean.FALSE);
        li = r.getLegendItem(0, 0);
        assertNull(li);
    }

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        dataset0.addValue(22.0, "R2", "C1");
        DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
        dataset1.addValue(23.0, "R3", "C1");
        dataset1.addValue(24.0, "R4", "C1");
        dataset1.addValue(25.0, "R5", "C1");
        BarRenderer r = new BarRenderer();
        CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        plot.setDataset(1, dataset1);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(1, 2);
        assertEquals("R5", li.getLabel());
        assertEquals(1, li.getDatasetIndex());
        assertEquals(2, li.getSeriesIndex());
    }

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    /**
     * Some checks for the findRangeBounds() method.
     */
    public void testFindRangeBounds() {
        BarRenderer r = new BarRenderer();
        assertNull(r.findRangeBounds(null));


        // an empty dataset should return a null range
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        assertNull(r.findRangeBounds(dataset));


        dataset.addValue(1.0, "R1", "C1");
        assertEquals(new Range(0.0, 1.0), r.findRangeBounds(dataset));
        r.setIncludeBaseInRange(false);
        assertEquals(new Range(1.0, 1.0), r.findRangeBounds(dataset));
        r.setIncludeBaseInRange(true);


        dataset.addValue(-2.0, "R1", "C2");
        assertEquals(new Range(-2.0, 1.0), r.findRangeBounds(dataset));


        dataset.addValue(null, "R1", "C3");
        assertEquals(new Range(-2.0, 1.0), r.findRangeBounds(dataset));


        dataset.addValue(-6.0, "R2", "C1");
        assertEquals(new Range(-6.0, 1.0), r.findRangeBounds(dataset));


        r.setSeriesVisible(1, Boolean.FALSE);
        assertEquals(new Range(-2.0, 1.0), r.findRangeBounds(dataset));
    }

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     */
    public void testSerialization() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        CategoryAxis domainAxis = new CategoryAxis("Domain");
        NumberAxis rangeAxis = new NumberAxis("Range");
        BarRenderer renderer = new BarRenderer();
        CategoryPlot p1 = new CategoryPlot(dataset, domainAxis, rangeAxis,
                renderer);
        p1.setOrientation(PlotOrientation.HORIZONTAL);
        CategoryPlot p2 = null;
        try {

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     */
    public void testSerialization2() {
        DefaultCategoryDataset data = new DefaultCategoryDataset();
        CategoryAxis domainAxis = new CategoryAxis("Domain");
        NumberAxis rangeAxis = new NumberAxis("Range");
        BarRenderer renderer = new BarRenderer();
        CategoryPlot p1 = new CategoryPlot(data, domainAxis, rangeAxis,
                renderer);
        p1.setOrientation(PlotOrientation.VERTICAL);
        CategoryPlot p2 = null;

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