clipping.java

来自「JSP中文介绍,对于菜鸟有用」· Java 代码 · 共 59 行

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

public class Clipping extends Canvas {

    public Clipping() {
	setBackground(Color.white);
    }

    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("Helvetica",Font.BOLD,w/8);
        String s = new String("By");
        TextLayout tl = new TextLayout(s, f, frc);
        float sw = (float) tl.getBounds().getWidth();
	AffineTransform transform = new AffineTransform();
	transform.setToTranslation(w/2-sw/2,h/2);
        Shape shape = tl.getOutline(transform);
        g2.setClip(shape);
        g2.setColor(Color.blue);
        g2.fill(shape.getBounds());
        g2.setColor(Color.yellow);
        for (int j = shape.getBounds().y; j < shape.getBounds().y + shape.getBounds().height; j=j+3) {
            Line2D line = new Line2D.Float( 0.0f, (float) j,
                                        (float) w, (float) j);
            g2.draw(line);
        }
    }

    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 Clipping());
        f.pack();
        f.setSize(new Dimension(400, 300));
        f.show();
    }
}