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vue使用SVG实现圆形进度条音乐播放

时间：2022-04-06 14:33 来源：未知作者：沧海一声笑收藏

这篇文章主要为大家详细介绍了vue使用SVG实现圆形进度条音乐播放，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

最近在使用vue做仿网易云音乐的项目，遇到了圆形进度条实现音乐播放的功能，所以我在这里总结一下，分享给大家我的实现方法。我这里主要是通过SVG的方式实现的。

效果图：

vue使用SVG实现圆形进度条音乐播放

实现过程

一、实现步骤

圆形进度条的实现
音乐播放/暂停的控制

二、步骤分解

这里先放一下 audio标签引入音频文件的代码：

<audio src="/static/audios/周兴哲 - 你，好不好？.mp3" @timeupdate="timeupdate" id="audio" @ended="ended"></audio>

/*
 timeupdate() 方法  实时获取 音频当前播放时长
 ended() 方法  播放结束的时候触发
*/

// 实时获取音频当前播放时长
  timeupdate(e) {
   // console.log("e===>", e.target.currentTime);
   this.current = e.target.currentTime;
   let duration = document.getElementsByTagName("audio")[0].duration;

   let percent = Math.min(1, this.current / duration);
   this.dashOffset = (1 - percent) * this.dashArray;
  },
  ended() {
   console.log("播放结束~~~");
   this.isStatus = false;
   // 初始化 圆形进度条的周长
   let circleWidth = document.getElementById("progressCircle").offsetWidth;
   this.dashArray = Math.PI * circleWidth;
   this.dashOffset = Math.PI * circleWidth;
  },

1. 圆形进度条的实现

这里通过SVG画两个一模一样的圆，设置一定的宽度，然后第二个圆使用stroke-dasharray和stroke-dashoffset来动态控制进度变化情况。stroke-dashoffset的变化情况要结合音乐的时长来设置。

<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" id="mySvg">
      <circle class="progress-background" cx="50%" cy="50%" r="50%" fill="transparent" />
      <circle
       class="progress-bar"
       cx="50%"
       cy="50%"
       r="50%"
       fill="transparent"
       :stroke-dasharray="dashArray"
       :stroke-dashoffset="dashOffset"
      />
   </svg>

  computed: {
    // 实时监听播放进度
    getDashOffset() {
     let percent = 0;
     if (document.getElementsByTagName("audio")[0]) {
      // 计算播放进度比例
      let duration = document.getElementsByTagName("audio")[0].duration;
      percent = Math.min(1, this.current / duration);
      this.dashOffset = (1 - percent) * this.dashArray;
     } else {
      this.dashOffset = (1 - 0) * this.dashArray;
     }
    }
   },
   mounted() {
    this.$nextTick(() => {
     // 初始化圆角周长
     let circleWidth = document.getElementById("progressCircle").offsetWidth;
     this.dashArray = Math.PI * circleWidth;
     this.dashOffset = Math.PI * circleWidth;
    });
   }

2. 音乐播放/暂停的控制

音乐的暂停和播放状态可以通过document.getElementById("audio").paused来判断，如果返回false则说明当前是播放状态，我们需要触发 document.getElementById("audio").pause()方法实现暂停操作，反之，触发document.getElementById("audio").play()方法实现播放操作。

// 操作音乐播放/暂停
 let audio = document.getElementById("audio");
 console.log("this.audio.paused===>", audio.paused);

 if (audio.paused) {
  audio.play();
 } else {
  audio.pause();
 }

下面方法全部的代码，大家可直接复制到自己的编辑器中运行（记得修改音频路径）

<template>
 <div class="playmusic">
  <div class="bottom-music">
   <div class="music-lt">
    <div class="lt-avator">
     <img src="/static/img/avator.jpg" alt />
    </div>
    <div class="lt-title">
     <span class="title">你，好不好？</span>
     <span class="name">周兴哲</span>
    </div>
   </div>
   <div class="music-rt">
    <div class="progress-circle" id="progressCircle" @click="operation">
     <svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" id="mySvg">
      <circle class="progress-background" cx="50%" cy="50%" r="50%" fill="transparent" />
      <circle
       class="progress-bar"
       cx="50%"
       cy="50%"
       r="50%"
       fill="transparent"
       :stroke-dasharray="dashArray"
       :stroke-dashoffset="dashOffset"
      />
     </svg>
     <span
      :class="isStatus'iconfont icon-bofang3 icons':'iconfont icon-bofang2 icons icons1'"
     ></span>
    </div>
    <span class="iconfont icon-yinleliebiao menu"></span>
    <audio src="/static/audios/周兴哲 - 你，好不好？.mp3" @timeupdate="timeupdate" id="audio" @ended="ended"></audio>
   </div>
  </div>
 </div>
</template>
<script>
export default {
 data() {
  return {
   dashArray: 0,
   current: 0,
   dashOffset: 0,
   isStatus: false // 播放状态 false 暂停 true 播放
  };
 },
 computed: {
  // 实时监听播放进度条
  getDashOffset() {
   let percent = 0;
   if (document.getElementsByTagName("audio")[0]) {
    // 计算播放进度比例
    let duration = document.getElementsByTagName("audio")[0].duration;
    percent = Math.min(1, this.current / duration);
    this.dashOffset = (1 - percent) * this.dashArray;
   } else {
    this.dashOffset = (1 - 0) * this.dashArray;
   }
  }
 },
 methods: {
  // 实时获取音频当前播放时长
  timeupdate(e) {
   // console.log("e===>", e.target.currentTime);
   this.current = e.target.currentTime;
   let duration = document.getElementsByTagName("audio")[0].duration;

   let percent = Math.min(1, this.current / duration);
   this.dashOffset = (1 - percent) * this.dashArray;
  },
  ended() {
   console.log("播放结束~~~");
   this.isStatus = false;
   // 初始化 圆形进度条的周长
   let circleWidth = document.getElementById("progressCircle").offsetWidth;
   this.dashArray = Math.PI * circleWidth;
   this.dashOffset = Math.PI * circleWidth;
  },
  // 操作音乐播放/暂停
  operation() {
   console.log("播放/暂停音乐");
   let audio = document.getElementById("audio");
   console.log("this.audio.paused===>", audio.paused);

   if (audio.paused) {
    audio.play();
    this.isStatus = true;
   } else {
    audio.pause();
    this.isStatus = false;
   }
  }
 },
 mounted() {
  this.$nextTick(() => {
   // 初始化圆的周长
   let circleWidth = document.getElementById("progressCircle").offsetWidth;
   this.dashArray = Math.PI * circleWidth;
   this.dashOffset = Math.PI * circleWidth;
  });
 }
};
</script>
<style lang="css" scoped>
.font {
 font-family: PingFangSC-Regular, PingFang SC;
 font-weight: 400;
}
.playmusic {
 position: relative;
 height: 100vh;
 width: 100%;
}
.playmusic .bottom-music {
 box-sizing: border-box;
 padding: 0 0.64rem;
 z-index: 999;
 box-shadow: 5px 5px 5px 5px #efefef, -5px 5px 5px 5px rgba(255, 255, 255, 0.5);
}
.playmusic .bottom-music {
 height: 3.41333333rem;
 width: 100%;
 position: fixed;
 left: 0;
 bottom: 0;
 display: flex;
 justify-content: space-around;
 align-items: center;
 background-color: #ffffff;
}
.playmusic .bottom-music .music-lt {
 flex: 1;
 display: flex;
 align-items: center;
 justify-content: start;
 width: 70%;
 overflow: hidden;
}
.playmusic .bottom-music .music-lt .lt-avator {
 width: 2.13333333rem;
 height: 2.13333333rem;
 border-radius: 50%;
 overflow: hidden;
}
.playmusic .bottom-music .music-lt .lt-avator img {
 width: 100%;
 height: 100%;
 display: block;
}
.playmusic .bottom-music .music-lt .lt-title {
 padding: 0 0.42666667rem;
 width: 80%;
}
.playmusic .bottom-music .music-lt .lt-title span {
 display: block;
 overflow: hidden;
 white-space: nowrap;
 text-overflow: ellipsis;
 font-family: PingFangSC-Regular, PingFang SC;
 font-weight: 400;
}
.playmusic .bottom-music .music-lt .lt-title .title {
 font-size: 0.59733333rem;
 font-weight: 600;
 color: #333;
}
.playmusic .bottom-music .music-lt .lt-title .name {
 font-size: 0.46933333rem;
 color: #666;
}
.playmusic .bottom-music .music-rt {
 display: flex;
 justify-content: end;
 align-items: center;
}
.playmusic .bottom-music .music-rt .progress-circle {
 width: 1.92rem;
 height: 1.92rem;
 position: relative;
}
.playmusic .bottom-music .music-rt .progress-circle circle {
 stroke-width: 0.14933333rem;
 transform-origin: center;
}
.playmusic .bottom-music .music-rt .progress-circle .progress-background {
 transform: scale(0.9);
 stroke: rgba(212, 68, 57, 0.5);
}
.playmusic .bottom-music .music-rt .progress-circle .progress-bar {
 transform: scale(0.9) rotate(-90deg);
 stroke: #d44439;
}
.playmusic .bottom-music .music-rt .progress-circle .icons {
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%, -50%);
 color: #d44439;
}
.playmusic .bottom-music .music-rt .progress-circle .icons {
 font-size: 1.17333333rem;
}
.playmusic .bottom-music .music-rt .progress-circle .icons1 {
 font-size: 0.96rem;
}
.playmusic .bottom-music .music-rt .menu {
 font-size: 1.70666667rem;
 color: #d44439;
 font-weight: 500;
}
.playmusic .bottom-music .music-rt .menu {
 padding-left: 0.85333333rem;
}

</style>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持源码搜藏网。