📄 cewolfgantt.jsp
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<!--
Fig. 8.4_06: CewolfGantt.jsp
功能: Cewolf 编程实例20: 甘特图
-->
<%@ page contentType="text/html;charset=GB2312"%>
<%@ taglib uri='/WEB-INF/cewolf.tld' prefix='cewolf' %>
<%@ page import="java.util.*"%>
<%@ page import="de.laures.cewolf.*"%>
<%@ page import="de.laures.cewolf.tooltips.*"%>
<%@ page import="de.laures.cewolf.links.*"%>
<%@ page import="org.jfree.data.*"%>
<%@ page import="org.jfree.data.time.*"%>
<%@ page import="org.jfree.data.gantt.*"%>
<%@ page import="org.jfree.chart.*"%>
<%@ page import="org.jfree.chart.plot.*"%>
<%@ page import="org.jfree.chart.renderer.*"%>
<%@ page import="org.jfree.data.category.*"%>
<%@ page import="org.jfree.data.general.*"%>
<%@ page import="org.jfree.data.xy.*"%>
<%!
String chartTitle = "Cewolf 编程实例20: 甘特图";
%>
<%
// 创建数据集
DatasetProducer ganttData = new DatasetProducer()
{
final private long now = System.currentTimeMillis();
final private long day = 1000 * 60 * 60 * 24;
final private String[] workflows =
{
"Analysis", "Design", "Implementation", "Test", "Rollout", "Operations"
};
final private String[] person =
{
"Frank", "Paul", "Daisy", "Chris"
};
public Object produceDataset(Map params)
{
TaskSeriesCollection ds = new TaskSeriesCollection();
for (int j = 0; j < 4; j++)
{
TaskSeries ser = new TaskSeries(person[j]);
long lastEnd = now + getRandomTime();
for (int i = 0; i < workflows.length; i++)
{
long myEnd = lastEnd + getRandomTime();
Task t = new Task(workflows[i], new SimpleTimePeriod(
new Date(lastEnd), new Date(myEnd)));
ser.add(t);
lastEnd = myEnd;
}
ds.add(ser);
}
return ds;
}
private long getRandomTime()
{
return day * (long)(Math.random() * 31+15);
}
public String getProducerId()
{
return "GanttDataProducer";
}
public boolean hasExpired(Map params, Date since)
{
return true;
}
};
pageContext.setAttribute("ganttData", ganttData);
%>
<HTML>
<HEAD>
<TITLE><%=chartTitle%></TITLE>
</HEAD>
<BODY>
<cewolf:chart
id="gantt"
title="<%=chartTitle%>"
type="gantt"
xaxislabel="Workflow">
<cewolf:colorpaint color="#FFEEEE"/>
<cewolf:data>
<cewolf:producer id="ganttData" />
</cewolf:data>
</cewolf:chart>
<cewolf:img
chartid="gantt"
renderer="/cewolf"
width="500"
height="375">
</cewolf:img>
</BODY>
</HTML>
<!--
/**************************************************************************
* (C) Copyright 2004-2005 by Jingkui Zhong(钟京馗) and Huan Tang(唐桓). *
* All Rights Reserved. *
* *
* DISCLAIMER: The authors of this code have used their *
* best efforts in preparing the code. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these codes. The authors *
* shall not be liable in any event for incidental or consequential *
* damages in connection with, or arising out of, the furnishing, *
* performance, or use of these programs. *
**************************************************************************/
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