timecontrol.java

mp3的播放

/**************************************************************************
 *	(C) Copyright 2008 by  Tao Liuyuan and Zhang Shuitao.                       *
 *		All Rights Reserved.               								  *
 *     																      *
 *	Project					: KYPlayer     								  *
 *	File					: TimeControl.java 			    			  *	
 *	JDK version used        : jdk1.6.0_u4							      *
 * 	Version                 : 1.00				     					  *
 * 	Created				    : 2008.7.6 by we						  *
 *************************************************************************/
package MP3Player;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;

import javax.swing.Timer;

/**
 * 时间控制条类
 * @author we
 */
public class TimeControl extends ControlBar {

	/**
	 * 自动生成的序列化值
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * 负责的窗口
	 */
	private MainPlayer mainForm;
	
	/**
	 * 播放计时器
	 */
	private Timer processTimer;

	/**
	 * 构造函数
	 * @param mainFrame
	 */
	public TimeControl(MainPlayer mainFrame) {
		super();
		this.mainForm = mainFrame;

		//每秒更新一次状态
		processTimer = new Timer(1000, new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setCurrentPercent();
			}
		});
	}

	/**
	 * 启动计时器
	 */
	public void start() {
		processTimer.start();
		
		if(mainForm.getPlayerStates() == 0) {
			processTimer.stop();
		}
	}

	/**
	 * 暂停计时器
	 */
	public void stop() {
		processTimer.stop();
	}

	/**
	 * 设置当前进度比例
	 */
	public void setCurrentPercent() {
		setProcessPercent((double) this.mainForm.getCurrentNanoseconds()
				/ (double) this.mainForm.getTotaNanoseconds());
		repaint();
		mainForm.setTimeLabel("");
	}

	/**
	 * 设置完成后需要执行的函数
	 */
	@Override
	public void done() {
		super.done();

		mainForm.setTime();
		mainForm.setTimeLabel("");
	}

	/**
	 * 设置提示
	 */
	@Override
	public void setTip(MouseEvent e) {
		int percent = getPointerPostion(e);
		setToolTipText("时间：" + Integer.toString(percent) + "%");
	}

	/**
	 * 重载的点击响应函数
	 */
	@Override
	public void mousePressed(MouseEvent e) {
		super.mousePressed(e);
		stop();
	}
	
	/**
	 * 重载的拖放完毕后响应函数
	 */
	@Override
	public void mouseReleased(MouseEvent e) {
		super.mouseReleased(e);
		start();
	}
}