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845天前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.util.Random; |
import javax.swing.JFrame; |
import javax.swing.JPanel; |
import javax.swing.Timer; |
public class daimayu extends JFrame implements ActionListener { |
private Random random = new Random(); |
private Dimension screenSize; |
private JPanel graphicsPanel; |
//行高,列宽 |
private final static int gap = 20; |
//存放雨点顶部的位置信息(marginTop) |
private int[] posArr; |
//行数 |
private int lines; |
//列数 |
private int columns; |
public daimayu() { |
initComponents(); |
} |
private void initComponents() { |
screenSize = Toolkit.getDefaultToolkit().getScreenSize(); |
// System.out.println(screenSize.getWidth()); |
// System.out.println(screenSize.getHeight()); |
lines = screenSize.height / gap; |
columns = screenSize.width / gap; |
// System.out.println(lines); |
// System.out.println(columns); |
posArr = new int[columns + 1]; |
random = new Random(); |
for (int i = 0; i < posArr.length; i++) { |
posArr[i] = random.nextInt(lines); |
} |
//每秒10帧 |
new Timer(100, this).start(); |
setLayout(new BorderLayout()); |
graphicsPanel = new GraphicsPanel(); |
add(graphicsPanel, BorderLayout.CENTER); |
// //设置光标不可见 |
// 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); |
//ESC键退出 |
KeyPressListener keyPressListener = new KeyPressListener(); |
this.addKeyListener(keyPressListener); |
//this.setAlwaysOnTop(true); |
// //去标题栏 |
// this.setUndecorated(true); |
// //全屏 |
// this.getGraphicsConfiguration().getDevice().setFullScreenWindow(this); |
int width,hight; |
width = (int)(screenSize.width-800)/2; |
hight = (int)(screenSize.height-500)/2; |
this.setSize(800, 500); |
this.setLocation(width, hight); |
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); |
setVisible(true); |
} |
/** |
* @return 随机字符 |
*/ |
private char getChr() { |
return (char) (random.nextInt(94) + 33); |
} |
@Override |
public void actionPerformed(ActionEvent e) { |
graphicsPanel.repaint(); |
System.out.println("11111"); |
} |
private class GraphicsPanel extends JPanel { |
@Override |
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); |
//当前列 |
int currentColumn = 0; |
for (int x = 0; x < screenSize.width; x += gap) { |
int endPos = posArr[currentColumn]; |
g2d.setColor(Color.CYAN); |
g2d.drawString(String.valueOf(getChr()), x, endPos * gap); |
int cg = 0; |
for (int j = endPos - 15; j < endPos; j++) { |
//颜色渐变 |
cg += 20; |
if (cg > 255) { |
cg = 255; |
} |
g2d.setColor(new Color(0, cg, 0)); |
g2d.drawString(String.valueOf(getChr()), x, j * gap); |
} |
//每放完一帧，当前列上雨点的位置随机下移1~5行 |
posArr[currentColumn] += random.nextInt(5); |
//当雨点位置超过屏幕高度时，重新产生一个随机位置 |
if (posArr[currentColumn] * gap > getHeight()) { |
posArr[currentColumn] = random.nextInt(lines); |
} |
currentColumn++; |
System.out.println(currentColumn); |
} |
} |
} |
private class KeyPressListener extends KeyAdapter { |
@Override |
public void keyPressed(KeyEvent e) { |
if (e.getKeyCode() == KeyEvent.VK_ESCAPE) { |
System.exit(0); |
} |
} |
} |
public static void main(String[] args) { |
new daimayu(); |
} |
} |
