第一次上机作业.zip

package HomeWork; import javax.swing.*; import java.awt.*; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.util.Random; public class ShowPatternWindow { private JFrame frame = new JFrame("在这里绘图"); private MyCanvas drawArea = new MyCanvas(); private Random random = new Random(); private Boat boat = new Boat("船：潮平两岸阔，风正一帆悬"); private Plane plane = new Plane("飞机：芜湖~起飞~"); public static void main(String[] args) { new ShowPatternWindow().init(); } public void init() { drawArea.addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { boat.setX1(e.getX()); boat.setY1(e.getY()); plane.setX1(e.getX()); plane.setY1(e.getY()); drawArea.repaint(); } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }); drawArea.setPreferredSize(new Dimension(800, 800)); frame.add(drawArea); frame.pack(); frame.setVisible(true); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } private class MyCanvas extends Canvas { @Override public void paint(Graphics g) { int number = random.nextInt(10); if (number > 5) { g.drawString(plane.description, plane.x1 - 50, plane.y1-150); g.drawOval(plane.x1 -25, plane.y1 - 138, 50, 300); g.drawRect(plane.x1 -162, plane.y1-25 , 325, 25); g.drawRect(plane.x1 -62, plane.y1+75 , 125, 25); } else { g.setColor(Color.BLACK); g.drawString(boat.description, boat.x1 - 75, boat.y1 - 200); g.drawPolygon(boat.x, boat.y, 4); g.drawLine(boat.x1, boat.y1, boat.x1, boat.y1 - 200); g.drawLine(boat.x1, boat.y1 - 200, boat.x1 + 75, boat.y1 - 100); g.drawLine(boat.x1, boat.y1 - 50, boat.x1 + 75, boat.y1 - 100); } } } }