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import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class Main extends JComponent {
private Image image;
private int theta;
public Main() {
image = Toolkit.getDefaultToolkit().getImage("A.jpg");
theta = 0;
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent me) {
theta = (theta + 15) % 360;
repaint();
}
});
}
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int cx = getSize().width / 2;
int cy = getSize().height / 2;
g2.translate(cx, cy);
g2.rotate(theta * Math.PI / 180);
Shape oldClip = g2.getClip();
Shape e = new Ellipse2D.Float(-cx, -cy, cx * 2, cy * 2);
g2.clip(e);
Shape c = new Ellipse2D.Float(-cx, -cy, cx * 3 / 4, cy * 2);
g2.setPaint(new GradientPaint(40, 40, Color.blue, 60, 50, Color.white, true));
g2.fill(c);
g2.setPaint(Color.yellow);
g2.fillOval(cx / 4, 0, cx, cy);
g2.setClip(oldClip);
g2.setFont(new Font("Times New Roman", Font.PLAIN, 64));
g2.setPaint(new GradientPaint(-cx, 0, Color.red, cx, 0, Color.black, false));
g2.drawString("Hello, 2D!", -cx * 3 / 4, cy / 4);
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) .75);
g2.setComposite(ac);
Shape r = new RoundRectangle2D.Float(0, -cy * 3 / 4, cx * 3 / 4, cy * 3 / 4, 20, 20);
g2.setStroke(new BasicStroke(4));
g2.setPaint(Color.magenta);
g2.fill(r);
g2.setPaint(Color.green);
g2.draw(r);
g2.drawImage(image, -cx / 2, -cy / 2, this);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new Main(), BorderLayout.CENTER);
frame.setSize(300, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
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