protected void update() {
// We have to rebuild the dataset from scratch (deleting and replacing it) because JFreeChart's
// piechart facility doesn't have a way to move series. Just like the histogram system: stupid
// stupid stupid.
SeriesAttributes[] sa = getSeriesAttributes();
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
for (int i = 0; i < sa.length; i++)
if (sa[i].isPlotVisible()) {
PieChartSeriesAttributes attributes = (PieChartSeriesAttributes) (sa[i]);
Object[] elements = attributes.getElements();
double[] values = null;
String[] labels = null;
if (elements != null) {
HashMap map = convertIntoAmountsAndLabels(elements);
labels = revisedLabels(map);
values = amounts(map, labels);
} else {
values = attributes.getValues();
labels = attributes.getLabels();
}
UniqueString seriesName = new UniqueString(attributes.getSeriesName());
for (int j = 0; j < values.length; j++)
dataset.addValue(values[j], labels[j], seriesName); // ugh
}
setSeriesDataset(dataset);
}
protected void buildChart() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
chart =
ChartFactory.createMultiplePieChart(
"Untitled Chart", dataset, org.jfree.util.TableOrder.BY_COLUMN, false, true, false);
chart.setAntiAlias(true);
// chartPanel = new ScrollableChartPanel(chart, true);
chartPanel = buildChartPanel(chart);
// chartHolder.getViewport().setView(chartPanel);
setChartPanel(chartPanel);
JFreeChart baseChart = (JFreeChart) ((MultiplePiePlot) (chart.getPlot())).getPieChart();
PiePlot base = (PiePlot) (baseChart.getPlot());
base.setIgnoreZeroValues(true);
base.setLabelOutlinePaint(java.awt.Color.WHITE);
base.setLabelShadowPaint(java.awt.Color.WHITE);
base.setMaximumLabelWidth(
0.25); // allow bigger labels by a bit (this will make the chart smaller)
base.setInteriorGap(0.000); // allow stretch to compensate for the bigger label width
base.setLabelBackgroundPaint(java.awt.Color.WHITE);
base.setOutlinePaint(null);
base.setBackgroundPaint(null);
base.setShadowPaint(null);
base.setSimpleLabels(false); // I think they're false anyway
// change the look of the series title to be smaller
StandardChartTheme theme = new StandardChartTheme("Hi");
TextTitle title = new TextTitle("Whatever", theme.getLargeFont());
title.setPaint(theme.getAxisLabelPaint());
title.setPosition(RectangleEdge.BOTTOM);
baseChart.setTitle(title);
// this must come last because the chart must exist for us to set its dataset
setSeriesDataset(dataset);
}