package com.lyf.iaqms;
import java.awt.Color;
import java.awt.Font;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.IntervalMarker;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.RingPlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.Layer;
import org.jfree.ui.LengthAdjustmentType;
import org.jfree.ui.TextAnchor;
public class RingChart {
public RingChart(){
this.createChart();
}
public void createChart() {
StandardChartTheme mChartTheme = new StandardChartTheme("CN");
mChartTheme.setLargeFont(new Font("黑体", Font.BOLD, 14)); // Y柱标签字体(浓度(单位:ppm))
mChartTheme.setExtraLargeFont(new Font("宋体", Font.PLAIN, 20)); //标题 (二氧化碳浓度趋势分析图)
//应用主题样式
ChartFactory.setChartTheme(mChartTheme);
//定义图标对象
JFreeChart chart = ChartFactory.createRingChart
("环形图",// 报表题目,字符串类型
this.createDataset(), // 获得数据集
true, // 显示图例
false, // 不用生成工具
false // 不用生成URL地址
);
//图表
RingPlot ringplot=(RingPlot) chart.getPlot();
ringplot.setLabelFont(new Font("宋体", Font.BOLD, 14));
//用来显示标注的注解,{0}:{1}用来设置显示的格式
ringplot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}:{1}"));
ringplot.setBackgroundPaint(Color.gray);//设置背景色
//设置简单标签
ringplot.setSimpleLabels(true);
//标题
TextTitle texttitle=chart.getTitle();
texttitle.setFont(new Font("宋体", Font.BOLD, 30));
//图示
LegendTitle legendtitle =chart.getLegend();
legendtitle.setItemFont(new Font("宋体", Font.BOLD, 14));
ChartFrame mChartFrame = new ChartFrame("环形图", chart);
mChartFrame.pack();
mChartFrame.setVisible(true);
}
// 获得数据集 (这里的数据是为了测试我随便写的一个自动生成数据的例子)
public PieDataset createDataset() {
DefaultPieDataset dataSet = new DefaultPieDataset();
//使用循环向数据集合中添加数据
int i,j;
String []a={"Java","VC","C++","数据结构","计算机网络"};
int []b={1964,820,825,960,1000};
for(i=0,j=0;i<a.length&&j<b.length;i++,j++){
dataSet.setValue(a[i],b[j]);
}
return dataSet;
}
public static void main(String[] args) {
RingChart RC=new RingChart();
}
}