import java.awt.*;
import javax.swing.*;
import java.awt.geom.Rectangle2D;
import java.awt.geom.Line2D;
import java.awt.geom.Ellipse2D;
import javax.swing.JFrame;
import java.awt.Toolkit;
import java.awt.Image;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.Graphics;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.event.*;

public class ShowEmotion extends JFrame
{
private JPanel p1;
private DrawPanel p2;
String choice="angry";

   public static void main(String[] args)
{
   ShowEmotion frame=new ShowEmotion();
   frame.setTitle("the front view of a microwave oven");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(400,400);
   frame.setVisible(true);
}

public ShowEmotion()
{

   setLayout(new BorderLayout());//set border Layout for the frame
       p1=new JPanel();
   p1.setLayout(new GridLayout(1,4,5,5));

        JButton Bt=new JButton("流淚");
        JButton Bs=new JButton("微笑");
        JButton Ba=new JButton("生氣");
        JButton Bc=new JButton("退出");
        Ba.addActionListener(new ButtonAction("angry"));
        Bt.addActionListener(new ButtonAction("tears"));
        Bs.addActionListener(new ButtonAction("smile"));
        Bc.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent event)
            {
             System.exit(0);
           }});
   p1.add(Bt);
   p1.add(Bs);
   p1.add(Ba);
   p1.add(Bc);
   add(p1,BorderLayout.SOUTH);

   p2=new DrawPanel();
   add(p2,BorderLayout.CENTER);
}

   class ButtonAction implements ActionListener
{
   private String str;
   public ButtonAction(String str){this.str=str;}
   public void actionPerformed(ActionEvent e)
   {
        choice=str;
        repaint( );
   }
}

class DrawPanel extends JPanel
{
    public void paintComponent(Graphics g)
    {
       super.paintComponent(g);
       Graphics2D g2 = (Graphics2D)g;
    if(choice.equals("angry"))
       new Angry().draw(g);
    else if(choice.equals("tears"))
       new Tears().draw(g,getWidth(),getHeight()); //增加,getWidth(),getHeight() Angry是默認(rèn)的表情
    else if(choice.equals("smile"))
       new Smile().draw(g,getWidth(),getHeight());
    }
    }

}


class Angry
{
public void draw(Graphics g)
{
   Graphics2D g2 = (Graphics2D)g;

        g2.drawLine(200,150,160,120);
        g2.drawLine(200,150,240,120);
        g2.fillArc(110,80,200,160,0,360);
        g2.setColor(Color.white);
        g2.fillArc(150,110,50,60,150,180);
        g2.fillArc(200,110,50,60,210,180);
        g2.drawArc(160,200,100,60,20,150);
        g2.setColor(Color.black);
        g2.fillArc(185,150,10,10,0,360);
        g2.fillArc(205,150,10,10,0,360);
}
}
class Tears
{
   public void draw(Graphics g,int width,int height)
   {
    Graphics2D g2 = (Graphics2D)g;
    int xc=width/2;
    int yc=height/2;
   // int radius=(int)(Math.min(getWidth(),getHeight())*0.4);
   //draw mouth
      int rmouth=10;
    int x=xc-rmouth;
    int y=yc-rmouth;
    g2.drawArc(x,y-8,5*rmouth,3*rmouth,-5,190);

    //draw eyes
    int reye=20;
    int xe1=xc-40-reye;
    int ye1=yc-70-reye;
    g2.drawArc(xe1,ye1,3*reye,2*reye,30,120);//draw left eye
    g2.drawArc(xe1+10,ye1+10,2*reye,1*reye,190,160);
    g2.drawArc(xe1+80,ye1,3*reye,2*reye,30,120);//draw right eye
    g2.drawArc(xe1+90,ye1+10,2*reye,1*reye,190,160);

    g2.drawArc(xc-90,yc-120,200,160,0,360);//draw head

    g2.fillArc(xe1+110,ye1+50,3,6,0,360);//draw tears
    g2.fillArc(xe1+30,ye1+70,4,8,0,360);
    g2.drawArc(xe1+112,ye1+60,3,4,0,360);
    g2.drawArc(xe1+25,ye1+30,5,9,0,360);

   }
}
class Smile
{
public void draw(Graphics g,int width,int height)
{
   Graphics2D g2 = (Graphics2D)g;
   int xc=width/2;
   int yc=height/2;
//draw mouth
     int rmouth=20;
   int x=xc-rmouth;
   int y=yc-rmouth;
   g2.drawArc(x,y-8,3*rmouth,2*rmouth,200,140);
   g2.drawArc(x,y,3*rmouth,2*rmouth,170,200);
   //draw eyes
   int reye=20;
   int xe1=xc-40-reye;
   int ye1=yc-70-reye;
   g2.drawArc(xe1,ye1,3*reye,2*reye,30,120);//draw left eye
   g2.drawArc(xe1+10,ye1+15,2*reye,1*reye,10,160);
   g2.drawArc(xe1+10,ye1+10,2*reye,1*reye,190,160);
   g2.drawArc(xe1+80,ye1,3*reye,2*reye,30,120);//draw right eye
   g2.drawArc(xe1+90,ye1+15,2*reye,1*reye,10,160);
   g2.drawArc(xe1+90,ye1+10,2*reye,1*reye,190,160);
   g2.fillArc(xe1+102,ye1+15,17,15,0,360);//draw left eyeball
   g2.fillArc(xe1+22,ye1+15,17,15,0,360);//draw right eyeball
   g2.drawArc(xc-90,yc-120,200,160,0,360);//draw head

}
}