Package org.jfree.chart.labels

Examples of org.jfree.chart.labels.StandardCategoryItemLabelGenerator

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    /**
     * Some checks for the generalLabel() method.
     */
    public void testGenerateLabel() {
        StandardCategoryItemLabelGenerator g
                = new StandardCategoryItemLabelGenerator("{2}",
                new DecimalFormat("0.000"));
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(1.0, "R0", "C0");
        dataset.addValue(2.0, "R0", "C1");
        dataset.addValue(3.0, "R1", "C0");
        dataset.addValue(null, "R1", "C1");
        String s = g.generateLabel(dataset, 0, 0);
        assertTrue(s.startsWith("1"));
        assertTrue(s.endsWith("000"));

        // try a null value
        s = g.generateLabel(dataset, 1, 1);
        assertEquals("-", s);
    }
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    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {

        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        StandardCategoryItemLabelGenerator g2
                = new StandardCategoryItemLabelGenerator();
        assertTrue(g1.equals(g2));
        assertTrue(g2.equals(g1));

        g1 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertTrue(g1.equals(g2));

    }
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    /**
     * Simple check that hashCode is implemented.
     */
    public void testHashCode() {
        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        StandardCategoryItemLabelGenerator g2
                = new StandardCategoryItemLabelGenerator();
        assertTrue(g1.equals(g2));
        assertTrue(g1.hashCode() == g2.hashCode());
    }
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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        StandardCategoryItemLabelGenerator g2 = null;
        try {
            g2 = (StandardCategoryItemLabelGenerator) g1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(g1 != g2);
        assertTrue(g1.getClass() == g2.getClass());
        assertTrue(g1.equals(g2));
    }
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    /**
     * Check to ensure that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        assertTrue(g1 instanceof PublicCloneable);
    }
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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator("{2}",
                DateFormat.getInstance());
        StandardCategoryItemLabelGenerator g2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(g1);
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    /**
     * A test for bug 1481087.
     */
    public void testEquals1481087() {
        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.00"));
        StandardCategoryToolTipGenerator g2
                = new StandardCategoryToolTipGenerator("{0}",
                new DecimalFormat("0.00"));
        assertFalse(g1.equals(g2));
    }
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                ItemLabelAnchor.OUTSIDE12, TextAnchor.BOTTOM_CENTER);
        renderer.setBasePositiveItemLabelPosition(positiveItemLabelPosition);
        ItemLabelPosition negativeItemLabelPosition = new ItemLabelPosition(
                ItemLabelAnchor.OUTSIDE6, TextAnchor.TOP_CENTER);
        renderer.setBaseNegativeItemLabelPosition(negativeItemLabelPosition);
        renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator(
                StandardCategoryItemLabelGenerator.DEFAULT_LABEL_FORMAT_STRING, numberFormat));
        renderer.setBaseItemLabelsVisible(true);
        return renderer;
    }
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    plot.setOutlineVisible(true);
    plot.setDomainGridlinesVisible(true);
    NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();
    numberaxis.setUpperMargin(0.25);
    CategoryItemRenderer renderer = plot.getRenderer();
    renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
    //注意：使用?ChartFactory创建的3D的，设置这个还不一定会出来，需要设置位置，如：
    ItemLabelPosition position1 = new ItemLabelPosition( ItemLabelAnchor.OUTSIDE12, TextAnchor.BOTTOM_CENTER);
        renderer.setBasePositiveItemLabelPosition(position1);
        ItemLabelPosition position2 = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE6, TextAnchor.TOP_CENTER);
        renderer.setBaseNegativeItemLabelPosition(position2);
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        p2.setLabelPaint(new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.blue));
        assertTrue(p1.equals(p2));

        // labelGenerator
        p1.setLabelGenerator(new StandardCategoryItemLabelGenerator("XYZ: {0}",
                new DecimalFormat("0.000")));
        assertFalse(p1.equals(p2));
        p2.setLabelGenerator(new StandardCategoryItemLabelGenerator("XYZ: {0}",
                new DecimalFormat("0.000")));
        assertTrue(p1.equals(p2));
       
        // toolTipGenerator
        p1.setToolTipGenerator(new StandardCategoryToolTipGenerator());
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