import java.awt.*;
import java.applet.*;

class ImageComponent extends Component {
    protected Image image;
    protected int width;
    protected int height;
    protected MediaTracker tracker;

    public ImageComponent(Image image){
        this.image = image;
    }

    public ImageComponent(String filename){
        tracker = new MediaTracker(this);

        image = Toolkit.getDefaultToolkit().getImage(filename);
        loadImage(image);
    }

    public ImageComponent(Applet applet, String filename){
        tracker = new MediaTracker(this);
        image = applet.getImage(applet.getDocumentBase(), filename);
        loadImage(image);
    }

    protected void loadImage(Image image){
        // イメージの読み込み
        synchronized(tracker) {
            tracker.addImage(image, 0);
            try{
                // イメージがロードされるまで待つ
                tracker.waitForID(0);
            }catch(InterruptedException e){
                e.printStackTrace();
            }
        
            tracker.removeImage(image, 0);

            width = image.getWidth(this);
            height = image.getHeight(this);
            setSize(width, height);
        }
    }

    public Dimension getPreferredSize(){
        return getMinimumSize();
    }

    public Dimension getMinimumSize(){
        return new Dimension(width, height);
    }

    public int getWidth(){
        return width;
    }

    public int getHeight(){
        return height;
    }

    public void update(Graphics g){
        paint(g);
    }

    public void paint(Graphics g){
        g.drawImage(image, 0, 0, this);
    }
}