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

Introduction

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

Prototype

public void setItemLabelFont(Font font) 

Source Link

Document

Sets the item label font for ALL series and sends a RendererChangeEvent to all registered listeners.

Usage

From source file:org.sakaiproject.sitestats.impl.chart.ChartServiceImpl.java

private byte[] generateLineChart(String siteId, CategoryDataset dataset, int width, int height,
        boolean render3d, float transparency, boolean itemLabelsVisible, boolean smallFontInDomainAxis) {
    JFreeChart chart = null;/*from  w w w .j  a v  a  2  s  . c  o  m*/
    if (render3d)
        chart = ChartFactory.createLineChart3D(null, null, null, dataset, PlotOrientation.VERTICAL, true, false,
                false);
    else
        chart = ChartFactory.createLineChart(null, null, null, dataset, PlotOrientation.VERTICAL, true, false,
                false);
    CategoryPlot plot = (CategoryPlot) chart.getPlot();

    // set transparency
    plot.setForegroundAlpha(transparency);

    // set background
    chart.setBackgroundPaint(parseColor(M_sm.getChartBackgroundColor()));

    // set chart border
    chart.setPadding(new RectangleInsets(10, 5, 5, 5));
    chart.setBorderVisible(true);
    chart.setBorderPaint(parseColor("#cccccc"));

    // set antialias
    chart.setAntiAlias(true);

    // set domain axis font size
    if (smallFontInDomainAxis && !canUseNormalFontSize(width)) {
        plot.getDomainAxis().setTickLabelFont(new Font("SansSerif", Font.PLAIN, 8));
        plot.getDomainAxis().setCategoryMargin(0.05);
    }

    // set outline
    LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setDrawOutlines(true);

    // item labels
    if (itemLabelsVisible) {
        plot.getRangeAxis().setUpperMargin(0.2);
        renderer.setItemLabelGenerator(new StandardCategoryItemLabelGenerator() {
            private static final long serialVersionUID = 1L;

            @Override
            public String generateLabel(CategoryDataset dataset, int row, int column) {
                Number n = dataset.getValue(row, column);
                if (n.intValue() != 0)
                    //return n.intValue()+"";
                    return n.toString();
                return "";
            }
        });
        renderer.setItemLabelFont(new Font("SansSerif", Font.PLAIN, 8));
        renderer.setItemLabelsVisible(true);
    }

    BufferedImage img = chart.createBufferedImage(width, height);
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    try {
        ImageIO.write(img, "png", out);
    } catch (IOException e) {
        LOG.warn("Error occurred while generating SiteStats chart image data", e);
    }
    return out.toByteArray();
}

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