/**
* Handles actions.
*
* @param e the action event.
*/
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
if ("BY_KEY".equals(cmd)) {
if (!this.ascendingByKey) {
this.dataset.sortByKeys(SortOrder.ASCENDING);
this.ascendingByKey = true;
} else {
this.dataset.sortByKeys(SortOrder.DESCENDING);
this.ascendingByKey = false;
}
} else if ("BY_VALUE".equals(cmd)) {
if (!this.ascendingByValue) {
this.dataset.sortByValues(SortOrder.ASCENDING);
this.ascendingByValue = true;
} else {
this.dataset.sortByValues(SortOrder.DESCENDING);
this.ascendingByValue = false;
}
} else if ("RANDOM".equals(cmd)) {
// we create a new dataset here - that's a bit wasteful,
// but the DefaultPieDataset will need new methods before we
// can shuffle it 'in place'...
List keys = new ArrayList(this.dataset.getKeys());
Collections.shuffle(keys);
DefaultPieDataset pd = new DefaultPieDataset();
Iterator iterator = keys.iterator();
while (iterator.hasNext()) {
Comparable key = (Comparable) iterator.next();
pd.setValue(key, this.dataset.getValue(key));
}
PiePlot plot = (PiePlot) this.chart.getPlot();
plot.setDataset(pd);
this.dataset = pd;
} else if ("LABELS".equals(cmd)) {
PiePlot plot = (PiePlot) this.chart.getPlot();
boolean simple = plot.getSimpleLabels();
if (simple) {
plot.setInteriorGap(0.05);
plot.setSimpleLabels(false);
} else {
plot.setInteriorGap(0.01);
plot.setSimpleLabels(true);
}
}
}
/**
* Creates a sample chart with the given dataset.
*
* @param dataset the dataset.
* @return A sample chart.
*/
private JFreeChart createChart(final CategoryDataset dataset) {
final JFreeChart chart =
ChartFactory.createMultiplePieChart(
"Multiple Pie Chart", // chart title
dataset, // dataset
TableOrder.BY_ROW,
true, // include legend
true,
true);
final MultiplePiePlot plot = (MultiplePiePlot) chart.getPlot();
final JFreeChart subchart = plot.getPieChart();
final PiePlot p = (PiePlot) subchart.getPlot();
p.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}"));
p.setLabelFont(new Font("SansSerif", Font.PLAIN, 8));
p.setInteriorGap(0.30);
return chart;
}
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);
}
