starry.java

JSP中文介绍,对于菜鸟有用

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.font.*;

public class Starry extends Canvas {
	private Image img;

    public Starry() {
	setBackground(Color.white);

        img = getToolkit().getImage("starry.gif");
        try {
            MediaTracker tracker = new MediaTracker(this);
            tracker.addImage(img, 0);
            tracker.waitForID(0);
        } catch (Exception e) {}
    }

    public void paint(Graphics g) {
        Graphics2D g2;
        g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);

        g2.setRenderingHint(RenderingHints.KEY_RENDERING,
                            RenderingHints.VALUE_RENDER_QUALITY);

        int w = getSize().width;
        int h = getSize().height;

        FontRenderContext frc = g2.getFontRenderContext();
        Font f = new Font("Times",Font.BOLD,w/10);
        String s = new String("The Starry Night");
        TextLayout tl = new TextLayout(s, f, frc);
        float sw = (float) tl.getBounds().getWidth();
        AffineTransform transform = new AffineTransform();
        transform.setToTranslation(w/2-sw/2,h/4);
        Shape shape = tl.getOutline(transform);
        Rectangle r = shape.getBounds();
        g2.setColor(Color.blue);
        g2.draw(shape);
        g2.setClip(shape);
        g2.drawImage(img, r.x, r.y, r.width, r.height, this);

    }

    public static void main(String s[]) {
        WindowListener l = new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
            public void windowClosed(WindowEvent e) {System.exit(0);}
        };

        Frame f = new Frame("2D Text");
        f.addWindowListener(l);
        f.add("Center", new Starry());
        f.pack();
        f.setSize(new Dimension(400, 300));
        f.show();
    }
}