Examples of org.jfree.chart.title.LegendTitle

org.jfree.chart.title.LegendTitle
A chart title that displays a legend for the data in the chart.
The title can be populated with legend items manually, or you can assign a reference to the plot, in which case the legend items will be automatically created to match the dataset(s).

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        XYPlot plot1 = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot1);
        LegendTitle t2 = new LegendTitle(plot1);
        assertEquals(t1, t2);
        
        t1.setBackgroundPaint(
            new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow)
        );
        assertFalse(t1.equals(t2));
        t2.setBackgroundPaint(
            new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow)
        );
        assertTrue(t1.equals(t2));
        
        t1.setLegendItemGraphicEdge(RectangleEdge.BOTTOM);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicEdge(RectangleEdge.BOTTOM);
        assertTrue(t1.equals(t2));
        
        t1.setLegendItemGraphicAnchor(RectangleAnchor.BOTTOM_LEFT);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicAnchor(RectangleAnchor.BOTTOM_LEFT);
        assertTrue(t1.equals(t2));
        
        t1.setLegendItemGraphicLocation(RectangleAnchor.TOP_LEFT);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicLocation(RectangleAnchor.TOP_LEFT);
        assertTrue(t1.equals(t2));
        
        t1.setItemFont(new Font("Dialog", Font.PLAIN, 19));
        assertFalse(t1.equals(t2));
        t2.setItemFont(new Font("Dialog", Font.PLAIN, 19));
        assertTrue(t1.equals(t2));
    }

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    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testHashcode() {
        XYPlot plot1 = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot1);
        LegendTitle t2 = new LegendTitle(plot1);
        assertTrue(t1.equals(t2));
        int h1 = t1.hashCode();
        int h2 = t2.hashCode();
        assertEquals(h1, h2);
    }

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     * Confirm that cloning works.
     */
    public void testCloning() {
        XYPlot plot = new XYPlot();
        Rectangle2D bounds1 = new Rectangle2D.Double(10.0, 20.0, 30.0, 40.0);
        LegendTitle t1 = new LegendTitle(plot);
        t1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 
                4.0f, Color.yellow));
        t1.setBounds(bounds1);
        LegendTitle t2 = null;
        try {
            t2 = (LegendTitle) t1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(t1 != t2);
        assertTrue(t1.getClass() == t2.getClass());
        assertTrue(t1.equals(t2));
        
        // check independence
        bounds1.setFrame(40.0, 30.0, 20.0, 10.0);
        assertFalse(t1.equals(t2));
        t2.setBounds(new Rectangle2D.Double(40.0, 30.0, 20.0, 10.0));
        assertTrue(t1.equals(t2));
    }

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


        XYPlot plot = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot);
        LegendTitle t2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(t1);
            out.close();


            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            t2 = (LegendTitle) in.readObject();
            in.close();
        }
        catch (Exception e) {
            fail(e.toString());
        }
        assertTrue(t1.equals(t2));
        assertTrue(t2.getSources()[0].equals(plot));
    }

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                false // urls
                );


        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...


        final LegendTitle legend = chart.getLegend();
        legend.setPosition(RectangleEdge.RIGHT);


        chart.setBackgroundPaint(Color.white);


        final CategoryPlot plot = chart.getCategoryPlot();

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        false // urls
        );


    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...


    final LegendTitle legend = chart.getLegend();
    legend.setPosition( RectangleEdge.BOTTOM );


    chart.setBackgroundPaint( Color.white );


    final CategoryPlot plot = chart.getCategoryPlot();

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            TextTitle tt = (TextTitle) title;
            tt.setFont(this.largeFont);
            tt.setPaint(this.subtitlePaint);
        }
        else if (title instanceof LegendTitle) {
            LegendTitle lt = (LegendTitle) title;
            if (lt.getBackgroundPaint() != null) {
                lt.setBackgroundPaint(this.legendBackgroundPaint);
            }
            lt.setItemFont(this.regularFont);
            lt.setItemPaint(this.legendItemPaint);
            if (lt.getWrapper() != null) {
                applyToBlockContainer(lt.getWrapper());
            }
        }
        else if (title instanceof PaintScaleLegend) {
            PaintScaleLegend psl = (PaintScaleLegend) title;
            psl.setBackgroundPaint(this.legendBackgroundPaint);

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        this.subtitles = new ArrayList<Title>();


        // create a legend, if requested...
        if (createLegend) {
            LegendTitle legend = new LegendTitle(this.plot);
            legend.setMargin(new RectangleInsets(1.0, 1.0, 1.0, 1.0));
            legend.setHorizontalAlignment(HorizontalAlignment.RIGHT);
            legend.setBackgroundPaint(Color.WHITE);
            legend.setPosition(RectangleEdge.BOTTOM);
            this.subtitles.add(legend);
            legend.addChangeListener(this);
        }


        // add the chart title, if one has been specified...
        if (title != null) {
            if (titleFont == null) {

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        data.setValue("Type 2", 23.9);
        data.setValue("Type 3", 45.8);
        JFreeChart c1 = ChartFactory.createPieChart("Test", data);
        JFreeChart c2 = (JFreeChart) TestUtils.serialised(c1);
        assertEquals(c1, c2);
        LegendTitle lt2 = c2.getLegend();
        assertSame(lt2.getSources()[0], c2.getPlot());
    }

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    public void testLegendEvents() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        JFreeChart chart = ChartFactory.createPieChart("title", dataset);
        chart.addChangeListener(this);
        this.lastChartChangeEvent = null;
        LegendTitle legend = chart.getLegend();
        legend.setPosition(RectangleEdge.TOP);
        assertNotNull(this.lastChartChangeEvent);
    }

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