炫酷代码雨

谁践踏了优雅 2023-06-23 10:56 47阅读 0赞

package com.chinada.dms.test.ysp;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.awt.*;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyAdapter;
    import java.awt.event.KeyEvent;
    import java.awt.image.MemoryImageSource;
    import java.util.Random;
    import javax.swing.JDialog;
    import javax.swing.JPanel;
    import javax.swing.Timer;
    /**
     * 测试类
     */
    
        public class TextMain extends JDialog implements ActionListener {
            private static final long serialVersionUID = 1L;
            private Random random = new Random();
            private Dimension screenSize;
            private JPanel graphicsPanel;
            private final static int gap = 20;
            private int[] posArr;
            private int lines;
            private int columns;
            public static void main(String[] args) {
                new TextMain();
            }
            public TextMain() {
                initComponents();
            }
            private void initComponents() {
                setLayout(new BorderLayout());
                graphicsPanel = new GraphicsPanel();
                add(graphicsPanel, BorderLayout.CENTER);
                Toolkit defaultToolkit = Toolkit.getDefaultToolkit();
                Image image = defaultToolkit.createImage(new MemoryImageSource(0, 0,
                        null, 0, 0));
                Cursor invisibleCursor = defaultToolkit.createCustomCursor(image,
                        new Point(0, 0), "cursor");
                setCursor(invisibleCursor);
                KeyPressListener keyPressListener = new KeyPressListener();
                this.addKeyListener(keyPressListener);
                this.setAlwaysOnTop(true);
                this.setUndecorated(true);
                this.getGraphicsConfiguration().getDevice().setFullScreenWindow(this);
                this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
                setVisible(true);
                screenSize = Toolkit.getDefaultToolkit().getScreenSize();
                lines = screenSize.height / gap;
                columns = screenSize.width / gap;
                posArr = new int[columns + 1];
                random = new Random();
                for (int i = 0; i < posArr.length; i++) {
                    posArr[i] = random.nextInt(lines);
                    new Timer(100, this).start();
                }
            }
            private char getChr() {
                return (char)  (random.nextInt(94) + 33);
            }
            public void actionPerformed(ActionEvent e) {
                graphicsPanel. repaint();
            }
            @SuppressWarnings("serial")
            private class GraphicsPanel extends JPanel {
                public void paint(Graphics g) {
                    Graphics2D g2d = (Graphics2D) g;
                    g2d. setFont (getFont (). deriveFont (Font. BOLD));
                    g2d. setColor(Color. BLACK);
                    g2d. fillRect (0, 0, screenSize. width, screenSize. height);
                    int currentColumn = 0;
                    for (int x = 0; x < screenSize.width; x += gap) {
                        int endPos = posArr[currentColumn];
                        g2d. setColor(Color. GREEN);
                        g2d.drawString(String.valueOf(getChr()), x, endPos * gap);
                        int cg = 0;
                        int length = 25;
                        for (int j = endPos -length; j < endPos; j++) {
                            cg += 255/(length + 1);
                            if (cg > 255) {
                                cg = 255;
                            }
                            g2d.setColor(new Color(0, cg, 0));
                            g2d.drawString(String.valueOf(getChr()), x, j * gap);
                        }
                        posArr[currentColumn] += random.nextInt(5);
                        if ((posArr[currentColumn] -5)* gap > getHeight()) {
                            posArr[currentColumn] = random.nextInt(lines);
                        }
                        currentColumn++;
                    }
                }
            }
            private class KeyPressListener extends KeyAdapter {
                public void keyPressed(KeyEvent e) {
                    if (e.getKeyCode() ==KeyEvent.VK_ESCAPE) {
                        System.exit(0);
                    }
                }
            }
        }