/*****************************************
UI程式設計範本
*************************************************/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.image.*;
//想想還有沒有其他的東西要import
public class ui48 extends JFrame implements MouseListener//名稱改一改
{
    Container c;
    //設定UI元件
    int x1,y1,x2,y2;
    int speed1,speed2;
    BufferedImage bi;
    //設定共用的變數與類別
    public ui48()   //建構元，名稱改一改
    {
        super("UI多執行緒範例設計範本"); 
        //初始化共用變數
        x1=0;x2=639;
        y1=200;y2=300;
        speed1=100;
        speed2=250;
        bi=new BufferedImage(640,480,BufferedImage.TYPE_INT_RGB);
        addMouseListener(this);
        c=getContentPane();//取得ContentPane
        setSize(640,480);//設定size，顯示出去
        setVisible(true);
        new Thread(){
            public void run(){
                try{
                    while (true)
                    {
                        Thread.sleep(speed1);
                        x1=x1+5;
                        if(x1>639) x1=0;
                        repaint();
                    }
                }
                catch (Exception ee){System.out.println(ee);}
            }       
        }.start();
        new Thread(){
            public void run(){
                try{
                    while (true)
                    {
                        Thread.sleep(speed2);
                        x2=x2-5;
                        if(x2<0) x2=639;
                        repaint();
                    }
                }
                catch (Exception ee){System.out.println(ee);}
            }       
        }.start();
    }
    public void paint(Graphics gg)  
    {
        Graphics g=bi.createGraphics();
	    super.paint(g);//畫出元件
	    //額外的畫圖程式寫在這裡
	    g.setColor(Color.red);
	    g.fillRect(x1,y1,80,30);
	    g.setColor(Color.green);
	    g.fillRect(x2,y2,80,30);
	    gg.drawImage(bi,0,0,null);
    }
    //UI元件事件處理類別寫在這裡
    //滑鼠事件處理類別寫在這裡
  /***主程式***/
  public void mouseEntered(MouseEvent e){}
  public void mouseExited(MouseEvent e){}
  public void mouseClicked(MouseEvent e){}
  public void mouseReleased(MouseEvent e){}
  public void mousePressed(MouseEvent e)
  {
      int color,R,G,B;
      color=bi.getRGB(e.getX(),e.getY());
      R=(color>>16) &0xff;
      G=(color>>8) &0xff;
      B=(color) &0xff;
      if (R>0) speed1=speed1/2;
      if (G>0) speed2=speed2/2;
  }
    public static void main(String args[]) //程式起點
    {
        ui48 app=new ui48(); //名稱改一改，啟動UI元件
        app.addWindowListener(new WindowAdapter(){ 
            public void windowClosing(WindowEvent e)
            {
                System.exit(0);
            }
        }); //處理視窗關閉要求
    }
}