/**
* 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 chart.
*
* @param dataset the dataset.
* @return A chart.
*/
private static JFreeChart createChart(PieDataset dataset) {
JFreeChart chart =
ChartFactory.createPieChart(
"Pie Chart Demo 1", // chart title
dataset, // data
true, // include legend
true,
false);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setSectionOutlinesVisible(false);
plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 10));
plot.setNoDataMessage("No data available");
plot.setSimpleLabels(true);
return chart;
}
private BufferedImage generarGraficoTorta(
String titulo, double[] valores, String[] funciones, int anchoImagen, int altoImagen) {
if (valores.length != funciones.length) {
return null;
}
DefaultPieDataset pieDataset = new DefaultPieDataset();
for (int i = 0; i < valores.length; i++) {
pieDataset.setValue(funciones[i], valores[i]);
}
JFreeChart chart = ChartFactory.createPieChart(titulo, pieDataset, true, true, false);
chart.setBackgroundPaint(null);
chart.getTitle().setPaint(LookAndFeelEntropy.COLOR_FUENTE_TITULO_PANEL);
chart.getTitle().setFont(LookAndFeelEntropy.FUENTE_TITULO_GRANDE);
chart.setBorderVisible(false);
chart.getLegend().setItemFont(LookAndFeelEntropy.FUENTE_REGULAR);
chart.getLegend().setBackgroundPaint(LookAndFeelEntropy.COLOR_TABLA_PRIMARIO);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setBackgroundPaint(null);
plot.setBackgroundImageAlpha(0.0f);
plot.setSimpleLabels(true);
plot.setOutlineVisible(false);
for (int i = 0; i < valores.length; i++) {
plot.setSectionPaint(
funciones[i],
generarColorAleatorio(Color.ORANGE)); // LookAndFeelEntropy.COLOR_FUENTE_TITULO_PANEL));
plot.setExplodePercent(funciones[i], 0.10);
}
PieSectionLabelGenerator gen =
new StandardPieSectionLabelGenerator(
"{0}: {1} ({2})", new DecimalFormat("0"), new DecimalFormat("0%"));
plot.setLabelGenerator(gen);
this.lastChart = chart;
// Generamos una imagen
return chart.createBufferedImage(anchoImagen, altoImagen);
}
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);
}
