播放器项目 用泛型集合实现 歌词显示功能

Posted 2020-08-15 影落明湖

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace 播放器项目B
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            musicPlayer.Ctlcontrols.play();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            musicPlayer.Ctlcontrols.pause();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            musicPlayer.Ctlcontrols.stop();
        }

        private void Form1_Load(object sender, EventArgs e)
        {            
            //在程序加载的时候，取消播放器的自动播放功能
            musicPlayer.settings.autoStart = false;
            musicPlayer.URL = @"";//自定义歌曲的路径
            label1.Image = Image.FromFile(@"");
        }
        bool b = true;//这个布尔值，用于控制记忆播放位置
        private void btnPlayorPause_Click(object sender, EventArgs e)
        {
            if(btnPlayorPause.Text =="播放")
            {
                if (b) //布尔值判断
                { 
                //获得选中的歌曲 让音乐从头播放
                musicPlayer.URL = listPath[listBox1.SelectedIndex];
                }
                musicPlayer.Ctlcontrols.play();
                btnPlayorPause.Text = "暂停";

                IsExistLrc(listPath[listBox1.SelectedIndex]);//歌词显示判断,调用歌词方法
            }
            else if(btnPlayorPause.Text=="暂停")
            {
                musicPlayer.Ctlcontrols.pause();
                btnPlayorPause.Text = "播放";
                b = false;
            }
        }
        //声明一个泛型集合，用来存储音乐文件的全路径
        List<string> listPath = new List<string>();
        private void button4_Click(object sender, EventArgs e)
        {
            //打开对话框，选择音乐
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.InitialDirectory = @"D:\";
            ofd.Filter = "音乐文件|*.wav|MP3文件|*.mp3|所有文件|*.*";
            ofd.Title = "请选择音乐文件哦亲(づ￣3￣)づ╭?～";
            ofd.Multiselect = true;
            ofd.ShowDialog();

            //获得在文本框中选择文件的全路径
            string[] path = ofd.FileNames;
            for (int i = 0; i < path.Length; i++)
            {
                //将音乐文件的全路径存储到泛型集合中
                listPath.Add(path[i]);
                //将音乐文件的文件名存储到ListBox中
                listBox1.Items.Add( Path.GetFileName(path[i]));
            }
        }

        private void listBox1_DoubleClick(object sender, EventArgs e)
        {
            if(listBox1.Items.Count == 0)
            {
                MessageBox.Show("请首先选择音乐文件");
                return;
            }
            try { 
            //双击播放对应的音乐
            musicPlayer.URL = listPath[listBox1.SelectedIndex];//集合里面一一对应
            musicPlayer.Ctlcontrols.play();
            btnPlayorPause.Text = "暂停";
                //歌词显示判断,调用歌词方法
            IsExistLrc(listPath[listBox1.SelectedIndex]);
                }
            catch { }
        }

        private void button6_Click(object sender, EventArgs e)
        {
            
            //获得当前选中项的索引
            int index = listBox1.SelectedIndex;
            //清空所有选中项的索引
            listBox1.SelectedIndices.Clear();

            index++;
            if(index==listBox1.Items.Count)
            {
                index=0;
            }
            //将改变后的索引重新赋值给当前选中项的索引
            listBox1.SelectedIndex = index;
            musicPlayer.URL=listPath[index];
            musicPlayer.Ctlcontrols.play();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            //获得当前选中项的索引
            int index = listBox1.SelectedIndex;
            //清空所有选中项的索引
            listBox1.SelectedIndices.Clear();

            index--;
            if (index < 0)
            {
                index = listBox1.Items.Count-1;
            }
            //将改变后的索引重新赋值给当前选中项的索引
            listBox1.SelectedIndex = index;
            musicPlayer.URL = listPath[index];
            musicPlayer.Ctlcontrols.play();
        }

        private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //点击删除选中项目,listPath中也要删除,listBox1.Item也要删
            //先删除集合
            int count = listBox1.SelectedItems.Count;
            for (int i = 0; i < count; i++)
            {
                listPath.RemoveAt(listBox1.SelectedIndex);
                listBox1.Items.RemoveAt(listBox1.SelectedIndex);
            }
        }

        private void label1_Click(object sender, EventArgs e)
        {
            //点击放音或静音
            if(label1.Tag.ToString()=="1")
            {
                //目的：让你静音
                musicPlayer.settings.mute = true;
                //显示静音的图片
                label1.Image = Image.FromFile(@"静音.jpg");
                label1.Tag = 2;
            }
            else if(label1.Tag.ToString()=="2")
            {
                musicPlayer.settings.mute = false;//放音
                //显示放音的图片
                label1.Image = Image.FromFile(@"放音.jpg");
                label1.Tag = 1;
            }
        }

        
        //歌词显示功能
        void IsExistLrc(string songPath)
        {
            //每次新播放歌词之前必须，清空两个集合的内容
            listLrcText.Clear();
            listTime.Clear();

           songPath += ".lrc";//歌词文件名
           if( File.Exists(songPath))
           {
               //读取歌词文件
               string[] lrcText = File.ReadAllLines(songPath,Encoding.Default);
               //格式化歌词
               FormatLrc(lrcText);
           }
           else
           {
               label2.Text = "歌词未找到";
           }
        }
        //声明集合存储时间
        List<double> listTime = new List<double>();
        //存储歌词
        List<string> listLrcText = new List<string>();
        void FormatLrc(string[] lrcText)//格式化歌词
        {
            for (int i = 0; i < lrcText.Length; i++)
            {
                //File.ReadAllLines(songPath)
                //[00:15.57]当我和世界不一样
                string[] lrcTemp = lrcText[i].Split(new char[] { ‘[‘, ‘]‘ }, StringSplitOptions.RemoveEmptyEntries);
                //00:15.57   lrcTemp[0]
                //当我和世界不一样 lrcTemp[1]
                string[] lrcNewTemp = lrcTemp[0].Split(new char[] { ‘:‘ }, StringSplitOptions.RemoveEmptyEntries);
                //00 lrcNewTemp[0]
                //15.57 lrcNewTemp[1]
                double time = double.Parse(lrcNewTemp[0]) * 60 + double.Parse(lrcNewTemp[1]);
                //截取出来的歌词时间加入泛型集合中
                listTime.Add(time);
                //截取出来的歌词加入泛型集合中
                listLrcText.Add(lrcTemp[1]);
            }
        }

        private void timer1_Tick(object sender, EventArgs e)//判断自动下一曲
        {
            //如果播放器的状态==正在播放中
            if(musicPlayer.playState==WMPLib.WMPPlayState.wmppsPlaying)
            {
                lblInformation.Text = musicPlayer.currentMedia.duration.ToString() + "\r\n" + musicPlayer.currentMedia.durationString + "\r\n" + musicPlayer.Ctlcontrols.currentPosition.ToString() + "\r\n" + musicPlayer.Ctlcontrols.currentPositionString;
               // lblInformation.Text = musicPlayer.currentMedia.duration.ToString() + "\r\n" + musicPlayer.currentMedia.durationString + "\r\n" + musicPlayer.Ctlcontrols.currentPosition.ToString() + "\r\n" + musicPlayer.Ctlcontrols.currentPositionString;
                double d1 = double.Parse(musicPlayer.currentMedia.duration.ToString());//总时间
                double d2 = double.Parse(musicPlayer.Ctlcontrols.currentPosition.ToString())+1;//当前时间
                
                //if (musicPlayer.currentMedia.durationString == musicPlayer.Ctlcontrols.currentPositionString)
                if(d1<= d2)
                {
                    //获得当前选中项的索引
                    int index = listBox1.SelectedIndex;

                    //清空所有选中项的索引
                    listBox1.SelectedIndices.Clear();
                    index++;
                    if (index == listBox1.Items.Count)
                    {
                        index = 0;
                    }
                    //将改变后的索引重新的赋值给当前选中项的索引
                    listBox1.SelectedIndex = index;
                    musicPlayer.URL = listPath[index];
                    musicPlayer.Ctlcontrols.play();
                }
            }           
        }
        private void timer2_Tick(object sender, EventArgs e)//歌词显示
        {
            for (int i = 0; i < listTime.Count; i++)
            {
                if (musicPlayer.Ctlcontrols.currentPosition >= listTime[i] && musicPlayer.Ctlcontrols.currentPosition < listTime[i+1])
                {
                    label2.Text = listLrcText[i];
                }
            }            
        }

        private void button7_Click(object sender, EventArgs e)
        {
            musicPlayer.settings.volume += 5;//音量+
        }

        private void button8_Click(object sender, EventArgs e)
        {
            musicPlayer.settings.volume -= 5;//音量-
        }


        
    }
}