Example usage for org.jfree.chart.renderer.category LineAndShapeRenderer getLegendItems

Introduction

In this page you can find the example usage for org.jfree.chart.renderer.category LineAndShapeRenderer getLegendItems.

Prototype

@Override
public LegendItemCollection getLegendItems() 

Source Link

Document

Returns a (possibly empty) collection of legend items for the series that this renderer is responsible for drawing.

Usage

From source file:gavisualizer.LineChart.java

@Override
public void generate() {
    // Creates Line Chart from variables
    JFreeChart chart = ChartFactory.createLineChart(_title, // chart title
            _axisLabelDomain, // domain axis label
            _axisLabelRange, // range axis label
            _dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            false, // tooltips
            false // urls
    );/*  ww w  . jav  a2s  .  c  o  m*/

    // Set the Plot to certain colors
    final CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.white);
    plot.setRangeGridlinePaint(Color.lightGray);
    plot.setOutlinePaint(Color.white);

    // Set Legend to the right of the chart
    final LegendTitle lt = (LegendTitle) chart.getLegend();
    lt.setPosition(RectangleEdge.RIGHT);

    // Set paints for lines in the chart
    LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    DefaultDrawingSupplier dw = new DefaultDrawingSupplier(PAINTS,
            DefaultDrawingSupplier.DEFAULT_OUTLINE_PAINT_SEQUENCE,
            DefaultDrawingSupplier.DEFAULT_STROKE_SEQUENCE,
            DefaultDrawingSupplier.DEFAULT_OUTLINE_STROKE_SEQUENCE,
            DefaultDrawingSupplier.DEFAULT_SHAPE_SEQUENCE);
    plot.setDrawingSupplier(dw);

    // Customize stroke width of the series
    ((AbstractRenderer) renderer).setAutoPopulateSeriesStroke(false);
    renderer.setBaseStroke(STROKE_WIDTH);
    renderer.setBaseShapesVisible(false);

    // Include dashed lines if necessary
    List<String> rows = _dataset.getRowKeys();

    // See if the title includes Downloads (Dashed lines are for Download lines)
    if (rows.get(rows.size() - 1).endsWith("Downloads")) {
        // Set the start to half the rows
        int start = _dataset.getRowCount() / 2;

        // Create an initial value
        int init = 0;

        // Iterate through the Download lines
        while (start < _dataset.getRowCount()) {
            // Make sure series and legend have dashes
            renderer.setSeriesStroke(start, DASHED_STROKE);
            LegendItemCollection legend = renderer.getLegendItems();
            LegendItem li = legend.get(start - 1);
            li.setLineStroke(DASHED_STROKE);

            // Make sure the color matches the undashed year
            renderer.setSeriesPaint(start, renderer.getItemPaint(init, 0));
            init++;
            start++;
        }
    }

    // Customise the range axis...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setAutoRangeIncludesZero(true);

    _chart = chart;
}

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