package com.test;

import java.io.*;
import com.sun.image.codec.jpeg.*;
import java.awt.image.*;
import java.awt.*;

public class ChartGraphics {
	 BufferedImage image;
	 public void createImage(String fileLocation) {
		 try {
			 FileOutputStream fos = new FileOutputStream(fileLocation);
			 BufferedOutputStream bos = new BufferedOutputStream(fos);
			 JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
			 encoder.encode(image);
			 bos.close();
		}catch(Exception e) {
			System.out.println(e);
		}
	 }

	 public void graphicsGeneration(int h1,int h2,int h3,int h4,int h5) {

		final int X=10;
		int imageWidth = 300;//图片的宽度
		int imageHeight = 300;//图片的高度
		int columnWidth=30;//柱的宽度
		int columnHeight=200;//柱的最大高度
		
		ChartGraphics chartGraphics = new ChartGraphics();
		chartGraphics.image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
		Graphics graphics = chartGraphics.image.getGraphics();
		graphics.setColor(Color.white);
		graphics.fillRect(0,0,imageWidth,imageHeight);
		graphics.setColor(Color.red);
		graphics.drawRect(X+1*columnWidth, columnHeight-h1, columnWidth, h1);
		graphics.drawRect(X+2*columnWidth, columnHeight-h2, columnWidth, h2);
		graphics.drawRect(X+3*columnWidth, columnHeight-h3, columnWidth, h3);
		graphics.drawRect(X+4*columnWidth, columnHeight-h4, columnWidth, h4);
		graphics.drawRect(X+5*columnWidth, columnHeight-h5, columnWidth, h5);
		chartGraphics.createImage("D:\\temp\\chart.jpg");
	}
}