drawframe.java

模拟股票交易市场设计的股票交易系统。采用软件工程思想设计

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
public class drawFrame extends JApplet
{
    private JFrame frame=new JFrame("股票行情");
    
    stock s;
    public drawFrame(stock i)
    {
        JApplet applet=new drawFrame(i);
        
        s=new stock(i);
        Container content =frame.getContentPane();
        content.add(applet);
        frame.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                //让行情窗口隐藏起来
                setVisible(false);
            }
        });
        applet.init();
        frame.setSize(new Dimension(550, 250));
        //frame.setVisible(true);
    }
    public void init()
    {
        setBackground(Color.lightGray);
    }
    public void paint(Graphics g)
    {
        Graphics2D g2d=(Graphics2D) g;
        Dimension dim=getSize();
        //draw market
        //double girdWidth=dim.width/(s.getNum());
        //double girdHeight=dim.height/(s.maxValue());
        //g2d.setPaint(Color.blue);
        /*
        *g2d.draw(new Line2D.Double(0, girdHeight, girdWidth/3.0, girdHeight/2.0));
        *g2d.draw(new Line2D.Double(girdWidth/3.0,girdHeight/2.0, girdWidth*2/3.0, girdHeight/2.0));
        *g2d.draw(new Line2D.Double(girdWidth*2/3.0, girdHeight/2.0, girdWidth, girdHeight));
        *按以上三句的样子画曲线...
         */
        //for(int i=0;i<s.getNum()-1;i++)
        //{
            //g2d.draw(new Line2D.Double((girdWidth*i), (dim.height-girdHeight*(s.getValue(i))), (girdWidth*(i+1)), (dim.height-girdHeight*(s.getValue(i)+1))));
        //}
        //test draw
        double girdWidth=dim.width;
        double girdHeight=dim.height;
        g2d.draw(new Line2D.Double(0, girdHeight, girdWidth/3.0, girdHeight/2.0));
        g2d.draw(new Line2D.Double(girdWidth/3.0,girdHeight/2.0, girdWidth*2/3.0, girdHeight/2.0));
        g2d.draw(new Line2D.Double(girdWidth*2/3.0, girdHeight/2.0, girdWidth, girdHeight));
    }
    public void setVisible(boolean b)
    {
        frame.setVisible(b);
    }
}