private PdfPCell createKPGSPieChartCell(KeyValue[] values, String title)
throws IOException, BadElementException {
DefaultPieDataset dataset = new DefaultPieDataset();
for (int n = 0; n < values.length; n++) {
dataset.setValue(values[n].getKey(), new Double(values[n].getValue()).doubleValue());
}
// create chart
final JFreeChart chart =
ChartFactory.createPieChart(
title, // chart title
dataset, // data
true, // legend
false, // tooltips
false // urls
);
// customize chart
PiePlot plot = (PiePlot) chart.getPlot();
plot.setBackgroundPaint(java.awt.Color.WHITE);
if (values.length > 0) {
if (values[0].getKey().equalsIgnoreCase("?") && values.length > 1) {
plot.setExplodePercent(values[1].getKey(), 0.2);
} else {
plot.setExplodePercent(values[0].getKey(), 0.2);
}
}
plot.setLegendLabelGenerator(new KPGSLegendGenerator());
plot.setLabelGenerator(new KPGSLabelGenerator(values));
plot.setOutlineVisible(false);
chart.setAntiAlias(true);
LegendTitle legendTitle = (LegendTitle) chart.getSubtitle(0);
legendTitle.setFrame(BlockBorder.NONE);
legendTitle.setBackgroundPaint(null);
ByteArrayOutputStream os = new ByteArrayOutputStream();
ChartUtilities.writeChartAsPNG(
os,
chart,
MedwanQuery.getInstance().getConfigInt("stats.piechartwidth", 640),
MedwanQuery.getInstance().getConfigInt("stats.piechartheight", 480));
cell = new PdfPCell();
cell.setColspan(50);
cell.setImage(Image.getInstance(os.toByteArray()));
cell.setBorder(PdfPCell.NO_BORDER);
cell.setPaddingLeft(5);
cell.setPaddingRight(5);
return cell;
}
/**
* Creates a chart.
*
* @param dataset the dataset.
* @return a chart.
*/
private static JFreeChart createChart(PieDataset dataset) {
JFreeChart chart =
ChartFactory.createPieChart(
"Pie Chart Demo 4", // chart title
dataset, // data
true, // include legend
true,
false);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setNoDataMessage("No data available");
plot.setCircular(false);
plot.setLabelGap(0.02);
plot.setExplodePercent("Section D", 0.50);
plot.setLabelLinkStyle(PieLabelLinkStyle.CUBIC_CURVE);
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);
}
public JFreeChart getChart() {
JFreeChart chart = null;
try {
Font font = new Font("宋体", 0, 20); // 字体
QuestionStatisticsModel qsm = ss.statistics(qid);
DefaultPieDataset pieds = null; // 饼图的数据集
DefaultCategoryDataset cateds = null; // 种类数据集
if (chartType < 2) {
pieds = new DefaultPieDataset();
for (OptionStatisticsModel os : qsm.getOsms()) {
pieds.setValue(os.getOptionLabel(), os.getCount());
}
} else {
cateds = new DefaultCategoryDataset();
for (OptionStatisticsModel os : qsm.getOsms()) {
cateds.setValue(os.getCount(), os.getOptionLabel(), "");
}
}
switch (chartType) {
case CHARTTYPE_PIE_2D:
chart =
ChartFactory.createPieChart(qsm.getQuestion().getTitle(), pieds, true, false, false);
break;
case CHARTTYPE_PIE_3D:
chart =
ChartFactory.createPieChart3D(qsm.getQuestion().getTitle(), pieds, true, true, true);
// 设置前景色透明度
chart.getPlot().setForegroundAlpha(0.6f);
break;
case CHARTTYPE_BAR_2D_H: // 平面条形图
chart =
ChartFactory.createBarChart(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.HORIZONTAL,
true,
true,
true);
break;
case CHARTTYPE_BAR_2D_V: // 平面条形图
chart =
ChartFactory.createBarChart(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.VERTICAL,
true,
true,
true);
case CHARTTYPE_BAR_3D_H: // 平面条形图
chart =
ChartFactory.createBarChart3D(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.HORIZONTAL,
true,
true,
true);
case CHARTTYPE_BAR_3D_V: // 平面条形图
chart =
ChartFactory.createBarChart3D(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.VERTICAL,
true,
true,
true);
break;
//
case CHARTTYPE_LINE_2D: // 平面条形图
chart =
ChartFactory.createLineChart(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.VERTICAL,
true,
true,
true);
break;
case CHARTTYPE_LINE_3D: // 平面条形图
chart =
ChartFactory.createLineChart3D(
qsm.getQuestion().getTitle(),
"",
"",
cateds,
PlotOrientation.HORIZONTAL,
true,
true,
true);
break;
}
chart.getTitle().setFont(font);
chart.getLegend().setItemFont(font);
// 设置饼图特效
if (chart.getPlot() instanceof PiePlot) {
PiePlot pieplot = (PiePlot) chart.getPlot();
pieplot.setLabelFont(font);
pieplot.setExplodePercent(0, 0.1);
pieplot.setStartAngle(-15);
pieplot.setDirection(Rotation.CLOCKWISE);
pieplot.setNoDataMessage("No data to display");
// pieplot.setForegroundAlpha(0.5f);
// pieplot.setBackgroundImageAlpha(0.3f);
}
// 设置非饼图效果
else {
chart.getCategoryPlot().getRangeAxis().setLabelFont(font);
chart.getCategoryPlot().getRangeAxis().setTickLabelFont(font);
chart.getCategoryPlot().getDomainAxis().setLabelFont(font);
chart.getCategoryPlot().getDomainAxis().setTickLabelFont(font);
}
} catch (Exception e) {
e.printStackTrace();
}
return chart;
}
