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

Introduction

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

Prototype

public Paint getItemPaint(int row, int column) 

Source Link

Document

Returns the paint used to color data items as they are drawn.

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
    );//from  www.  j a  v  a  2 s  .  com

    // 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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