photoframe.java

本程序所需的jmf到sun官方网站下载,先要进行设备注册才能运行,详情请见readme.txt

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;

import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/*
 * 创建日期 2006-11-20
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */

public class PhotoFrame extends JFrame implements MouseMotionListener{
	private JPanel photoPanel;
	  /**
     * 选取框的x,y,width,height参数的默认值
     */
    private int rectX;
    private int rectY;
    private static int rectWidth = 100; //照片宽
    private static int rectHeight = 120; //照片高
    private static String photoURL = "Photo"; //照片保存路径
    private int imgWidth = 320;
    private int imgHeight = 240;
    private Image photo = null;
    
	public PhotoFrame(){
		super("照片预览");
		this.setSize(imgWidth,imgHeight);
		//photoPanel
		photoPanel = new JPanel();
		photoPanel.setSize(imgWidth, imgHeight);
		
		this.addMouseMotionListener(this);
		this.add(photoPanel,BorderLayout.NORTH);
		this.setVisible(true);
		this.setResizable(false);
	}
	public void setPhoto(Image img) {
		// TODO 自动生成方法存根
		photo = img;
	}
	public static void initPhoto(int width,int height,String url){
		rectWidth = width;
		rectHeight = height;
		photoURL = url;
	}
	
	public void update(Graphics g)
    {
        g.clearRect(0, 0, getWidth(), getHeight());
        if (photo != null)
        {
            g.drawImage(photo, 0, 0, this);
            g.setColor(Color.RED);
            g.drawRect(rectX, rectY, rectWidth, rectHeight);
        }
    }
    public void paint(Graphics g)
    {
        update(g);
    }

    public void mouseDragged(MouseEvent e)
    {
        rectX = e.getX() - 50;
        rectY = e.getY() - 50;
        repaint();
    }
	public void mouseMoved(MouseEvent arg0) {
		// TODO 自动生成方法存根	
	}

	 /**
     * 保存图像
     * @param img
     */
    public void savePhoto(Image img,String name)
    {
        BufferedImage bi = (BufferedImage) createImage(imgWidth, imgHeight);
        /*BufferedImage bi =
            new BufferedImage(
                img.getWidth(null),
                img.getHeight(null),
                BufferedImage.TYPE_INT_RGB);*/

        Graphics2D g2 = bi.createGraphics();
        g2.clipRect(rectX, rectY, rectWidth, rectHeight);
        g2.drawImage(img, null, null);
        int moveX = rectX > 0 ? rectX : 0;
        int moveY = rectY > 0 ? rectY : 0;
        int cutWidth =
            rectX + rectWidth > imgWidth
                ? rectWidth - ((rectX + rectWidth) - imgWidth)
                : rectWidth;
        int cutHeight =
            rectY + rectHeight > imgHeight
                ? rectHeight - ((rectY + rectHeight) - imgHeight)
                : rectHeight;
        bi = bi.getSubimage(moveX, moveY, cutWidth, cutHeight);

        FileOutputStream out = null;
        try
        {
            out = new FileOutputStream(photoURL+"/"+name+".jpg");
        }
        catch (java.io.FileNotFoundException io)
        {
        	JOptionPane.showMessageDialog(null, "   找不到指定文件加!", "提示",
					JOptionPane.INFORMATION_MESSAGE);
        }
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
        param.setQuality(1f, false);
        encoder.setJPEGEncodeParam(param);
        try
        {
            encoder.encode(bi);
            out.close();
        }
        catch (java.io.IOException io)
        {
            System.out.println("IOException");
        }
    }
}