include.picture.MyPieChart.java Source code

Introduction

Here is the source code for include.picture.MyPieChart.java

Source

/*
 *this file is part of nseer erp
 *Copyright (C)2006-2010 Nseer(Beijing) Technology co.LTD/http://www.nseer.com 
 *
 *This program is free software; you can redistribute it and/or
 *modify it under the terms of the GNU General Public License
 *as published by the Free Software Foundation; either
 *version 2 of the License, or (at your option) any later version.
 */
package include.picture;

import java.io.*;
import java.awt.Color;
import org.jfree.data.*;
import org.jfree.chart.*;
//import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.*;

/**
 * ?
 * @author Winter Lau
 */
public class MyPieChart {

    private String title;// 
    private String fileName;
    private int width = 400;//
    private int height = 300;//
    private String[] item;//???
    private double[] quantity;//?

    public String getFileName() {
        return fileName;
    }

    public void setFileName(String newFileName) {
        this.fileName = newFileName;
    }

    public int getWidth() {
        return width;
    }

    public void setWidth(int newWidth) {
        this.width = newWidth;
    }

    public int getHeight() {
        return height;
    }

    public void setHeight(int newHeight) {
        this.height = newHeight;
    }

    public String getTitle() {
        return this.title;
    }

    public void setTitle(String argTitle) {
        this.title = argTitle;
    }

    public String[] getItem() {
        return this.item;
    }

    public void setItem(String[] argItem) {
        this.item = argItem;
    }

    public double[] getQuantity() {
        return this.quantity;
    }

    public void setQuantity(double[] argQuantity) {
        this.quantity = argQuantity;
    }

    public void setbarwidth(double percent) {

    }

    /**
    *
    */
    public MyPieChart() {
    }

    public void paint() {
        try {
            check();
            DefaultPieDataset dataset = getDataSet(item, quantity);
            JFreeChart chart = ChartFactory.createPie3DChart(title, dataset, true, // ?
                    false, false);
            chart.setBackgroundPaint(Color.WHITE);
            Pie3DPlot plot = (Pie3DPlot) chart.getPlot();
            plot.setSectionLabelType(PiePlot.PERCENT_LABELS);
            plot.setPercentFormatString("#,###0.00%");
            //Pie3DPlotsetDepthFactor ?
            plot.setDepthFactor(0.05);
            FileOutputStream fos_jpg = null;
            try {
                fos_jpg = new FileOutputStream(fileName);
                ChartUtilities.writeChartAsJPEG(fos_jpg, 1000, chart, width, height, null);
            } finally {
                try {
                    fos_jpg.close();
                } catch (Exception e) {
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void check() throws Exception {
        if (title == null || fileName == null || item == null || quantity == null) {
            throw new Exception("some message should be designed!");
        } else if (item.length != quantity.length) {
            throw new Exception("length of item not equals length of quantity");
        } // end of else

    }

    private DefaultPieDataset getDataSet(String[] name, double[] quantiy) {
        DefaultPieDataset dataset = new DefaultPieDataset();
        for (int i = 0; i < name.length; i++) {
            dataset.setValue(name[i], quantiy[i]);
        }
        return dataset;
    }

    /**
    *
    */
    public static void main(String[] args) {
        MyPieChart pie = new MyPieChart();
        pie.setTitle("");
        pie.setFileName("fly.jpg");
        pie.setWidth(600);
        pie.setHeight(400);
        String[] item = new String[] { "1", "2", "3" };
        double[] quantity = new double[] { 100, 200, 300 };
        pie.setItem(item);
        pie.setQuantity(quantity);
        pie.paint();
    } // end of main()
}