Example usage for org.jfree.data.datasetextension DatasetSelectionExtension isSelected

Introduction

In this page you can find the example usage for org.jfree.data.datasetextension DatasetSelectionExtension isSelected.

Prototype

public boolean isSelected(DatasetCursor cursor);

Source Link

Usage

From source file:org.jfree.expdemo.SelectionDemo7ScatterRenderer.java

/**
 * Creates a chart./*www. j av a2s.co  m*/
 * 
 * @param dataset
 *            the dataset.
 * 
 * @return A chart.
 */
private static JFreeChart createChart(final MultiValueCategoryDataset dataset,
        final DatasetSelectionExtension ext) {

    ScatterRenderer r = new ScatterRenderer();
    CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("Category"), new NumberAxis("Value"), r);
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));
    JFreeChart chart = new JFreeChart("ScatterRendererDemo1", plot);
    ChartUtilities.applyCurrentTheme(chart);

    //register the plot
    ext.addSelectionChangeListener(plot);

    //illustrates the usage of a shape item rendering strategy
    final CategoryCursor cursor = new CategoryCursor();
    r.setShapeIRS(new DefaultShapeIRS(r) {
        public Shape getItemShape(int row, int column) {
            cursor.setPosition(dataset.getRowKey(row), dataset.getColumnKey(column));
            if (ext.isSelected(cursor)) {
                return new Rectangle2D.Double(-10.0, -10.0, 20.0, 20.0);
            } else {
                return super.getItemShape(row, column);
            }
        }
    });

    return chart;

}

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