package org.quickbundle.third.jfreechart;
/*
* Created on 2003-9-9
* http://www.sentom.net
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
import java.awt.Color;
import java.awt.Font;
import java.io.PrintWriter;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import javax.servlet.http.HttpSession;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.labels.StandardPieToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.title.TextTitle;
import org.jfree.chart.urls.CategoryURLGenerator;
import org.jfree.chart.urls.PieURLGenerator;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.ui.RectangleInsets;
import org.quickbundle.tools.support.font.RmFont;
/**
* @author sentom
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class WebChart {
private DefaultPieDataset data = new DefaultPieDataset();
private DefaultCategoryDataset dataCategory = new DefaultCategoryDataset();
public void setValue(String key, double value) {
if(key == null) {
key = "";
}
data.setValue(key, value);
dataCategory.setValue(value, key, key);
}
static Font fontLarge = new Font(RmFont.getDefaultFontName(), Font.PLAIN, 20);
static Font fontSmall = new Font(RmFont.getDefaultFontName(), Font.PLAIN, 12);
/**
* 简单饼图，无链接+2D
*
* @param title
* @param session
* @param pw
* @return
*/
public String generatePieChart(String title, HttpSession session, PrintWriter pw) {
return generatePieChart(title, session, pw, null, false);
}
/**
* 生成饼图
*
* @param title 标题
* @param session session
* @param pw
* @param pug
* @param is3d
* @return
*/
public String generatePieChart(String title, HttpSession session, PrintWriter pw, PieURLGenerator pug, boolean is3d) {
String filename = null;
try {
// 创建chart对象
PiePlot plot = null;
if(is3d) {
plot = new PiePlot3D(data);
} else {
plot = new PiePlot(data);
}
plot.setInsets(new RectangleInsets(0, 5, 5, 5));
// 图片中显示百分比:自定义方式，{0} 表示选项， {1} 表示数值， {2} 表示所占比例 ,小数点后两位
plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}={1}({2})", NumberFormat.getNumberInstance(), new DecimalFormat("0.00%")));
// 图例显示百分比:自定义方式， {0} 表示选项， {1} 表示数值， {2} 表示所占比例
plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}={1}({2})"));
// 在统计图片上建链接
plot.setURLGenerator(pug);
plot.setToolTipGenerator(new StandardPieToolTipGenerator());
JFreeChart chart = new JFreeChart("", fontLarge, plot, true);
chart.setBackgroundPaint(Color.white);// 设置图片的背景色
TextTitle _title = new TextTitle(title);
_title.setFont(fontLarge); // 设置图片标题的字体
chart.setTitle(_title);
chart.getTitle().setFont(fontLarge);
plot.setLabelFont(fontSmall);
chart.getLegend().setItemFont(fontSmall);
// 把生成的图片放到临时目录
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
// 500是图片长度，300是图片高度
filename = ServletUtilities.saveChartAsPNG(chart, 600, 400, info, session);
ChartUtilities.writeImageMap(pw, filename, info, false);
pw.flush();
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
/**
* 简单饼图，无链接+3D
*
* @param title
* @param session
* @param pw
* @return
*/
public String generateBarChart(String title, HttpSession session, PrintWriter pw) {
return generateBarChart(title, session, pw, null, true);
}
/**
* 生成柱图
* @param title
* @param session
* @param pw
* @param cug
* @param is3d
* @return
*/
public String generateBarChart(String title, HttpSession session, PrintWriter pw, CategoryURLGenerator cug, boolean is3d) {
String filename = null;
try {
JFreeChart chart = ChartFactory.createBarChart3D(title, "数值", "数据量", dataCategory, PlotOrientation.VERTICAL, false, false, false);
chart.setBackgroundPaint(Color.white);
chart.getTitle().setFont(fontLarge);
CategoryPlot plot = chart.getCategoryPlot();
plot.setBackgroundPaint(Color.white);
plot.setRangeGridlinePaint(Color.blue);
CategoryAxis domainAxis=plot.getDomainAxis();
/*------设置X轴坐标上的文字-----------*/
domainAxis.setTickLabelFont(fontSmall);
/*------设置X轴的标题文字------------*/
domainAxis.setLabelFont(fontSmall);
//设置距离图片左端距离
domainAxis.setLowerMargin(0.05);
// 设置Y轴显示整数
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
ValueAxis rAxis = plot.getRangeAxis();
/*------设置Y轴坐标上的文字-----------*/
rAxis.setTickLabelFont(fontSmall);
/*------设置Y轴的标题文字------------*/
rAxis.setLabelFont(fontSmall);
BarRenderer renderer = null;
if(is3d) {
renderer = new BarRenderer3D();
} else {
renderer = new BarRenderer();
}
//设置柱的颜色
renderer.setSeriesPaint(0, new Color(0xff00));
//显示数值
renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
renderer.setBaseItemLabelsVisible(true);
//在统计图片上建链接
renderer.setBaseItemURLGenerator(cug);
plot.setRenderer(renderer);
// 把生成的图片放到临时目录
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 600, 400, info, session);
ChartUtilities.writeImageMap(pw, filename, info, false);
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
}