【发布时间】：2013-03-05 14:52:03
【问题描述】：
我正在使用Jfreechart编写一个分析日志文件的项目，我有一个overvide generateToolTip的问题，我想要做的是当用户将鼠标移动到一个点时，然后 “tip”会显示这个block（一个子任务）的信息，我需要显示每个子任务的描述。
我把我的例子放在这里，我只是可以显示最后一个子任务的描述。
如果可以的话，请给我一些帮助。谢谢
蒋
公共类测试 {
class MyToolTipGenerator extends IntervalCategoryToolTipGenerator {
DateFormat format;
private MyToolTipGenerator(String value, DateFormat format) {
super(value, format);
this.format = format;
}
@Override
public String generateToolTip(CategoryDataset cds, int row, int col) {
final String s = super.generateToolTip(cds, row, col);
TaskSeriesCollection tsc = (TaskSeriesCollection) cds;
StringBuilder sb = new StringBuilder(s);
String subTaskDes = null;
// ArrayList<TaskSeries> ats=new ArrayList<>();
// TaskSeries ts = new TaskSeries(s);
int a = tsc.getSeriesCount();
System.out.println(a + "________________");
for (int i = 1; i < tsc.getSeriesCount(); i++) {
TaskSeries ts = tsc.getSeries(i);
Task task = ts.get(0);
int count = task.getSubtaskCount();
for (int j = 0; j < task.getSubtaskCount(); j++) {
while (count-- != 0) {
subTaskDes = task.getSubtask(j).getDescription()
.toString();
}
}
// for (int j = 0; j < tsc.getSubIntervalCount(row, col); j++) {
// tsc.getSeries(0).getTasks().get(0).toString();
// tsc.getSeries(key)
// System.out.println(tsc.getSubIntervalCount(row, col));
// tsc.getColumnKey(i).toString();
// }
}
// System.out.println(ats.get(0).getDescription());
for (int i = 0; i < tsc.getSubIntervalCount(row, col); i++) {
sb.append(format.format(tsc.getStartValue(row, col, i)));
sb.append("-");
sb.append(format.format(tsc.getEndValue(row, col, i)));
sb.append(",");
}
sb.deleteCharAt(sb.length() - 1);
// return sb.toString();
return subTaskDes;
}
}
private JFreeChart createChart() {
IntervalCategoryDataset xyDataset = createDataset();
JFreeChart jFreeChart = ChartFactory.createGanttChart("Gantt", "time",
"value", xyDataset, true, true, true);
CategoryPlot plot = jFreeChart.getCategoryPlot();
plot.getRenderer().setBaseToolTipGenerator(
new MyToolTipGenerator("{0}, {1}: ", DateFormat
.getTimeInstance(DateFormat.SHORT)));
return jFreeChart;
}
private IntervalCategoryDataset createDataset() {
TaskSeriesCollection dataset = new TaskSeriesCollection();
TaskSeries unavailable1 = new TaskSeries("Unavailable 1");
TaskSeries unavailable2 = new TaskSeries("Unavailable 2");
TaskSeries unavailable3 = new TaskSeries("Unavailable 3");
Task t1 = new Task("Meeting Room 1", date(7), date(18));
t1.addSubtask(new Task("Meeting 1", date(9), date(16)));
unavailable1.add(t1);
Task t2 = new Task("Meeting Room 2", date(8), date(18));
t2.addSubtask(new Task("Meeting 4", date(10), date(11)));
t2.addSubtask(new Task("Meeting 5", date(13), date(15)));
t2.addSubtask(new Task("Meeting 6", date(16), date(18)));
unavailable2.add(t2);
Task t3 = new Task("Meeting Room 3", date(8), date(18));
t2.addSubtask(new Task("Meeting 7", date(11), date(11)));
t2.addSubtask(new Task("Meeting 8", date(13), date(15)));
t2.addSubtask(new Task("Meeting 9", date(18), date(18)));
unavailable3.add(t3);
dataset.add(unavailable1);
dataset.add(unavailable2);
dataset.add(unavailable3);
return dataset;
}
private Date date(int hour) {
final Calendar calendar = Calendar.getInstance();
calendar.set(2009, Calendar.DECEMBER, 1, hour, 0, 0);
return calendar.getTime();
}
private void display() {
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new ChartPanel(createChart()));
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new Test().display();
}
});
}
}enter code here
【问题讨论】：
标签： java jfreechart