Example usage for org.jfree.chart LegendItemSource getLegendItems

Introduction

In this page you can find the example usage for org.jfree.chart LegendItemSource getLegendItems.

Prototype

public LegendItemCollection getLegendItems();

Source Link

Document

Returns a (possibly empty) collection of legend items.

Usage

From source file:com.hmsinc.epicenter.webapp.chart.ChartService.java

/**
 * @param chart//  w  w w. j av a  2  s  . c  om
 * @return
 */
private static void configureTitleAndLegend(final JFreeChart chart, final AbstractChart adapter) {

    final TextTitle title = chart.getTitle();
    if (title != null) {
        title.setFont(new Font("Arial", Font.BOLD, 12));
        // title.setBackgroundPaint(Color.CYAN);
        title.setTextAlignment(HorizontalAlignment.LEFT);
        title.setHorizontalAlignment(HorizontalAlignment.CENTER);
        title.setMargin(0, 4, 5, 6);
    }

    if (chart.getLegend() != null) {
        chart.removeLegend();

        final LegendTitle legend = new LegendTitle(chart.getPlot(), new SNColumnArrangement(0, 0),
                new ColumnArrangement(HorizontalAlignment.CENTER, VerticalAlignment.CENTER, 0, 0));

        legend.setItemFont(LEGEND_FONT);
        legend.setPosition(RectangleEdge.BOTTOM);
        legend.setHorizontalAlignment(HorizontalAlignment.CENTER);
        legend.setBackgroundPaint(Color.WHITE);
        legend.setFrame(new LineBorder());
        legend.setMargin(0, 4, 5, 6);

        chart.addLegend(legend);

        // Now we'll try to remove any duplicate items from the legend..
        final Map<String, Integer> keys = new HashMap<String, Integer>();
        final LegendItemCollection items = new LegendItemCollection();

        for (LegendItemSource source : legend.getSources()) {

            for (int i = 0; i < source.getLegendItems().getItemCount(); i++) {

                final LegendItem item = source.getLegendItems().get(i);
                if (!keys.containsKey(item.getLabel())) {
                    keys.put(item.getLabel(), i);
                    items.add(item);
                }
            }
        }

        legend.setSources(new LegendItemSource[] { new LegendItemSource() {

            /*
             * (non-Javadoc)
             * 
             * @see org.jfree.chart.LegendItemSource#getLegendItems()
             */
            public LegendItemCollection getLegendItems() {
                return items;
            }

        } });
    }
}

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From source file:org.talend.dataprofiler.chart.ChartDecorator.java

/**
 * //from  w w  w  . ja v a 2 s. c o  m
 * if it contians CJK, set Font to "Arial Unicode MS".Or else, the Font is "Tahoma".
 * 
 * @param chart
 */
private static void setLegendFont(JFreeChart chart) {
    Font font;
    LegendTitle legend = chart.getLegend();
    if (legend != null) {
        font = new Font("Tahoma", Font.PLAIN, BASE_LEGEND_LABEL_SIZE);//$NON-NLS-1$
        // get legend label to judge if it contains CJK.
        LegendItemSource[] sources = legend.getSources();
        Set<String> itemLabels = new HashSet<String>();
        for (LegendItemSource source : sources) {
            LegendItemCollection legendItems = source.getLegendItems();
            for (int i = 0; i < legendItems.getItemCount(); i++) {
                String label = legendItems.get(i).getLabel();
                if (label != null) {
                    itemLabels.add(label);
                }
            }
        }
        if (isContainCJKCharacter(itemLabels.toArray())) {
            font = getCJKFont(Font.PLAIN, BASE_LEGEND_LABEL_SIZE);
        }
        legend.setItemFont(font);
    }
}

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