Example usage for org.jfree.chart.renderer.xy AbstractXYItemRenderer setItemLabelsVisible

Introduction

In this page you can find the example usage for org.jfree.chart.renderer.xy AbstractXYItemRenderer setItemLabelsVisible.

Prototype

public void setItemLabelsVisible(boolean visible) 

Source Link

Document

Sets the visibility of the item labels for ALL series.

Usage

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

private byte[] generateTimeSeriesChart(String siteId, IntervalXYDataset dataset, int width, int height,
        boolean renderBar, float transparency, boolean itemLabelsVisible, boolean smallFontInDomainAxis,
        String timePeriod, Date firstDate, Date lastDate) {
    JFreeChart chart = null;//from   w w w .j  a va  2  s  .c o m
    if (!renderBar) {
        chart = ChartFactory.createTimeSeriesChart(null, null, null, dataset, true, false, false);
    } else {
        chart = ChartFactory.createXYBarChart(null, null, true, null, dataset, PlotOrientation.VERTICAL, true,
                false, false);
    }
    XYPlot plot = (XYPlot) 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));
    }

    // configure date display (localized) in domain axis
    Locale locale = msgs.getLocale();
    PeriodAxis periodaxis = new PeriodAxis(null);
    Class timePeriodClass = null;
    if (dataset instanceof TimeSeriesCollection) {
        TimeSeriesCollection tsc = (TimeSeriesCollection) dataset;
        if (tsc.getSeriesCount() > 0) {
            timePeriodClass = tsc.getSeries(0).getTimePeriodClass();
        } else {
            timePeriodClass = org.jfree.data.time.Day.class;
        }
        periodaxis.setAutoRangeTimePeriodClass(timePeriodClass);
    }
    PeriodAxisLabelInfo aperiodaxislabelinfo[] = null;
    if (StatsManager.CHARTTIMESERIES_WEEKDAY.equals(timePeriod)) {
        aperiodaxislabelinfo = new PeriodAxisLabelInfo[2];
        aperiodaxislabelinfo[0] = new PeriodAxisLabelInfo(org.jfree.data.time.Day.class,
                new SimpleDateFormat("E", locale));
        aperiodaxislabelinfo[1] = new PeriodAxisLabelInfo(org.jfree.data.time.Day.class,
                new SimpleDateFormat("d", locale));
    } else if (StatsManager.CHARTTIMESERIES_DAY.equals(timePeriod)) {
        aperiodaxislabelinfo = new PeriodAxisLabelInfo[3];
        aperiodaxislabelinfo[0] = new PeriodAxisLabelInfo(org.jfree.data.time.Day.class,
                new SimpleDateFormat("d", locale));
        aperiodaxislabelinfo[1] = new PeriodAxisLabelInfo(org.jfree.data.time.Month.class,
                new SimpleDateFormat("MMM", locale));
        aperiodaxislabelinfo[2] = new PeriodAxisLabelInfo(org.jfree.data.time.Year.class,
                new SimpleDateFormat("yyyy", locale));
    } else if (StatsManager.CHARTTIMESERIES_MONTH.equals(timePeriod)) {
        aperiodaxislabelinfo = new PeriodAxisLabelInfo[2];
        aperiodaxislabelinfo[0] = new PeriodAxisLabelInfo(org.jfree.data.time.Month.class,
                new SimpleDateFormat("MMM", locale));
        aperiodaxislabelinfo[1] = new PeriodAxisLabelInfo(org.jfree.data.time.Year.class,
                new SimpleDateFormat("yyyy", locale));
    } else if (StatsManager.CHARTTIMESERIES_YEAR.equals(timePeriod)) {
        aperiodaxislabelinfo = new PeriodAxisLabelInfo[1];
        aperiodaxislabelinfo[0] = new PeriodAxisLabelInfo(org.jfree.data.time.Year.class,
                new SimpleDateFormat("yyyy", locale));
    }
    periodaxis.setLabelInfo(aperiodaxislabelinfo);
    // date range
    if (firstDate != null || lastDate != null) {
        periodaxis.setAutoRange(false);
        if (firstDate != null) {
            if (StatsManager.CHARTTIMESERIES_MONTH.equals(timePeriod)
                    || StatsManager.CHARTTIMESERIES_YEAR.equals(timePeriod)) {
                periodaxis.setFirst(new org.jfree.data.time.Month(firstDate));
            } else {
                periodaxis.setFirst(new org.jfree.data.time.Day(firstDate));
            }
        }
        if (lastDate != null) {
            if (StatsManager.CHARTTIMESERIES_MONTH.equals(timePeriod)
                    || StatsManager.CHARTTIMESERIES_YEAR.equals(timePeriod)) {
                periodaxis.setLast(new org.jfree.data.time.Month(lastDate));
            } else {
                periodaxis.setLast(new org.jfree.data.time.Day(lastDate));
            }
        }
    }
    periodaxis.setTickMarkOutsideLength(0.0F);
    plot.setDomainAxis(periodaxis);

    // set outline
    AbstractXYItemRenderer renderer = (AbstractXYItemRenderer) plot.getRenderer();
    if (renderer instanceof XYLineAndShapeRenderer) {
        XYLineAndShapeRenderer r = (XYLineAndShapeRenderer) renderer;
        r.setDrawSeriesLineAsPath(true);
        r.setShapesVisible(true);
        r.setShapesFilled(true);
    } else if (renderer instanceof XYBarRenderer) {
        //XYBarRenderer r = (XYBarRenderer) renderer;
        ClusteredXYBarRenderer r = new ClusteredXYBarRenderer();
        r.setDrawBarOutline(true);
        if (smallFontInDomainAxis && !canUseNormalFontSize(width))
            r.setMargin(0.05);
        else
            r.setMargin(0.10);
        plot.setRenderer(r);
        renderer = r;
    }

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

            public String generateLabel(XYDataset dataset, int series, int item) {
                Number n = dataset.getY(series, item);
                if (n.doubleValue() != 0)
                    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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