package com.tydic.common;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.io.File;

import javax.imageio.ImageIO;

public class ImgCut {
	/**
	 * 
	 * @param srcImageFile 原图片地址
	 * @param x截取时的x坐标
	 * @param y截取时的y坐标
	 * @param desWidth 截取的宽度
	 * @param desHeight 截取的高度
	 */
	public static void imgCut(String srcImageFile, int x, int y, int desWidth,
            int desHeight,int imgWidth,int imgHeight) {
			try {
			Image img;
			ImageFilter cropFilter;
			BufferedImage bi = ImageIO.read(new File(srcImageFile+"_src.jpg"));
			int srcWidth = bi.getWidth();
			int srcHeight = bi.getHeight();
			if(imgWidth == 0)
				imgWidth = srcWidth;
			if(imgHeight==0)
				imgHeight = srcHeight;
			System.out.println("srcWidth:"+srcWidth+"----"+imgWidth);
			System.out.println("srcHeight:"+srcHeight+"----"+imgHeight);
			if (imgWidth >= desWidth && imgHeight >= desHeight) {
			Image image = bi.getScaledInstance(imgWidth, imgHeight,Image.SCALE_DEFAULT);
//			int x1 = x*srcWidth/400;
//			int y1 = y*srcHeight/270;
//			int w1 = 
			cropFilter = new CropImageFilter(x, y, desWidth, desHeight);
			img = Toolkit.getDefaultToolkit().createImage(
			      new FilteredImageSource(image.getSource(), cropFilter));
			BufferedImage tag = new BufferedImage(desWidth, desHeight,
			      BufferedImage.TYPE_INT_RGB);
			Graphics g = tag.getGraphics();
			g.drawImage(img, 0, 0, null);
			g.dispose();
			//输出文件
			ImageIO.write(tag, "JPEG", new File(srcImageFile+"_cut.jpg"));
			}
		} catch (Exception e) {
			e.printStackTrace();
			}
			}

	

}