structure.java

自己制作的简单的歌词编辑器

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package lyric;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
/**
 *
 * @author 徐新坤
 */
public class Structure extends JPanel implements MouseListener,ActionListener{

    public void actionPerformed(ActionEvent e) {
        System.out.println("action");
        Time t  = new Time();
        if(e.getActionCommand().equals("START")){           
            t.start();
            System.out.println("start");
        }
        if(e.getActionCommand().equals("END")){
            try{
                t.stop();
                time=0;
            }
            catch(Exception ex){
                System.err.print(ex);
            }
            System.gc();
            System.out.println("end");
        }
            
        
//        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void mouseClicked(MouseEvent e) {
        int minute = time / 6000;
        int second = time / 100 - minute * 60;
        int min = time - second * 100 - minute * 6000;
        String temp = "["+minute+":"+second+":"+min+"]";
        int pos = GetPostion(e.getY());
        InsertTime(temp,pos);
        System.out.println(temp);
//        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void mouseEntered(MouseEvent e) {
//        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void mouseExited(MouseEvent e) {
//        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void mousePressed(MouseEvent e) {
//                int minute = time / 6000;
//        int second = time / 100 - minute * 60;
//        int min = time - second * 100 - minute * 6000;
//        String temp = "["+minute+":"+second+":"+min+"]";
//        System.out.println(temp);
//        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void mouseReleased(MouseEvent e) {
//        throw new UnsupportedOperationException("Not supported yet.");
    }
    
    JTextArea jta;
    JButton jbs,jbe;
    ScrollPane sp;
    int time=0;
    public Structure(){
        jta=new JTextArea();
        jbs =new JButton("START");
        jbe = new JButton("END");
        sp = new ScrollPane();
        setLayout(new BorderLayout());
        add("Center",sp);
        sp.add(jta);
        add("East",jbe);
        add("West",jbs);
        jbs.addActionListener(this);
        jbe.addActionListener(this);
        jta.addMouseListener(this);
    }
    
	class Time
	{
		java.util.Timer ti=new java.util.Timer();
		java.util.Date da=new java.util.Date();
		public void start()
		{
			ti.scheduleAtFixedRate(new Task(),da,10);
		}
		public void stop()
		{
			ti.cancel();
		}
	}

        class Task extends TimerTask
	{
		public void run(){
			time++;
		}
	}
        
    private void InsertTime(String time,int position){
        jta.insert(time, position);
    }
    
    private int GetPostion (int y){
        int height =18;
//                jta.getRowHeight();
        int line = y / height;
        int pos =0;
        try{
            pos =jta.getLineStartOffset(line);
            System.out.println("y="+y+"h="+height);
        }
        catch(Exception ex){
            System.err.println(ex);
        }
        return pos;
    }

}