imagecanvas.java

用java写的jt-jpeg。jt表示java time package

package jpeg;
import jcp.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;

public class ImageCanvas extends Canvas {

    private Image image;

    public void showImage(ImageProducer ip) {
        image = this.createImage(ip);
        int width = image.getWidth(this);
        int height = image.getHeight(this);
        setSize(width,height);
        repaint();
    }

    public void showImage(Image img) {
        image = img;
        int width = image.getWidth(this);
        int height = image.getHeight(this);
        setSize(width,height);
        repaint();
    }

    public void paint(Graphics g) {
        if (image != null) {
            g.drawImage(image,0,0,null);
        }
    }

    public boolean imageUpdate(Image img, int infoflags, int x, int y,
                           int width, int height) {
        setSize(width,height);
        return false;
    }

}