? ?? ?? vue-music? Player ????? ?? ?? ??? ???? ???? ????. ?? ?? ???? ??? ? ????.

? ?? ??? Player ????? ?? ????. ??? ???? ??? ??? ????

?? ????:

1. ? ????? ???? ?? ??? ????. ?? vuex state.js

import {playMode} from 'common/js/config.js';

const state = {
 singer:{}, 
 playing:false, //是否播放
 fullScreen:false, //是否全屏
 playList:[], //播放列表
 sequenceList:[], // 非順序播放列表
 mode:playMode.sequence, // 播放模式（順序0，循環(huán)1，隨機2）
 currentIndex:-1, //當前播放索引
}
export default state 


---------------------------------------------
// config.js

export const playMode = {
 sequence:0,
 loop:1,
 random:2
}

2?? ?? ???? ??? ?????. ???? ???? ??? ? ?? ?? ???? ???? ?? ??? ?????. ?? ?? ???? ??

?? ?? ?? ??? ?? ??? ???? ?????. ????, ?? ??? ??? ???? ?????

<li @click="selectItem(song,index)" v-for="(song,index) in songs" class="item">

------------------------------
selectItem(item,index){
 this.$emit(&#39;select&#39;,item,index)
},

?? ?? ?????? ?? ???? ????.

<song-list :rank="rank" :songs="songs" @select="selectItem"></song-list>

3. ?? ??? ???? ??

import {playMode} from 'common/js/config.js'

export const selectPlay = function({commit,state},{list,index}){
 commit(types.SET_SEQUENCE_LIST, list)
 commit(types.SET_PLAYLIST, list)
 commit(types.SET_CURRENT_INDEX, index)
 commit(types.SET_FULL_SCREEN, true)
 commit(types.SET_PLAYING_STATE, true)
}

4. mapActions? ???? ?? ?? ?? ??? ??? ?? ?????.

import {mapActions} from 'vuex'

methods:{
 selectItem(item,index){
  this.selectPlay({
  list:this.songs,
  index
  })
 },
 ...mapActions([
  'selectPlay'
 ])
 },

5. ?? ?? (?? ?? ??? ?? ??? ????? ??? ???? ? ????)

<p class="player" v-show="playList.length>0">　　　　// 如果有列表數(shù)據(jù)則顯示
  <p class="normal-player" v-show="fullScreen">　　//如果全屏
   <p class="background">
   <img :src="currentSong.image" alt="" width="100%" height="100%">　　　　//模糊背景圖
   </p>
   <p class="top">
    <p class="back" @click="back">
    <i class="icon-back"></i>
    </p>
    <h1 class="title" v-html="currentSong.name"></h1>　　　　//當前歌曲名稱
    <h2 class="subtitle" v-html="currentSong.singer"></h2>　　//當前歌手名
   </p>
   <p class="middle">
    <p class="middle-l">
    <p class="cd-wrapper">
     <p class="cd" :class="cdCls">
     <img :src="currentSong.image" alt="" class="image">　　　　//封面圖
     </p>
    </p>
    </p>
   </p>
   <p class="bottom">
   <p class="progress-wrapper">
   <span class="time time-l">{{ format(currentTime) }}</span>
   <p class="progress-bar-wrapper">
    <progress-bar :percent="percent" @percentChange="onProgressBarChange"></progress-bar>
   </p>
   <span class="time time-r">{{ format(currentSong.duration) }}</span>
   </p>
     <p class="operators">
    <p class="icon i-left">
     <i :class="iconMode" @click="changeMode"></i>
    </p>
     <p class="icon i-left" :class="disableCls">
      <i @click="prev" class="icon-prev"></i>
      </p>
      <p class="icon i-center" :class="disableCls">
      <i :class="playIcon" @click="togglePlaying"></i>
      </p>
      <p class="icon i-right" :class="disableCls">
      <i @click="next" class="icon-next"></i>
      </p>
      <p class="icon i-right">
      <i class="icon icon-not-favorite"></i>
      </p>
    </p>
    </p>
   </p>
   </transition>
   <transition name="mini">
    <p class="mini-player" v-show="!fullScreen" @click="open">
     <p class="icon">
      <img :src="currentSong.image" alt="" width="40" height="40" :class="cdCls">
     </p>
     <p class="text">
      <h2 class="name" v-html="currentSong.name"></h2>
      <p class="desc" v-html="currentSong.singer"></p>
     </p>
     <p class="control">
      <i :class="miniIcon" @click.stop="togglePlaying"></i>
     </p>
     <p class="control">
      <i class="icon-playlist"></i>
     </p>
    </p>
   </transition>
   <audio :src="currentSong.url" ref="audio" @canplay="ready" @error="error" @timeupdate="updateTime" @ended="end"></audio>
 </p>

???? ?? ??

import {mapGetters,mapMutations} from 'vuex';

...mapGetters([
 'fullScreen',
 'playList',
 'currentSong',
 'playing',
 'currentIndex',
])

??: vuex?? ??? ???? ?? ????? ?? ?? ??? ?? ????. This.fullScreen = false? ????? ?? ????? ???. ???? ?? ? ????? ??? ?? vuex? mapMutations ??? ???? ????

[types.SET_FULL_SCREEN](state, flag) {
 state.fullScreen = flag
 },

import {mapGetters,mapMutations} from 'vuex';
methods:{
 ...mapMutations({
 setFullScreen:"SET_FULL_SCREEN", 
 }),
 back(){
 this.setFullScreen(false)
 },
}

? ???? ?? ?? ?? ???

 <i :class="playIcon" @click="togglePlaying"></i>

togglePlaying(){
 this.setPlayingState(!this.playing); //改變全局變量playing 的屬性
},

// 然后watch 監(jiān)聽playing 操作實際的audio 標簽的播放暫停
watch:{
  playing(newPlaying){
   let audio = this.$refs.audio;
   this.$nextTick(() => {
    newPlaying ? audio.play():audio.pause();
   })
  }
 },

// 用計算屬性改變相應的播放暫停圖標
playIcon(){
 return this.playing? 'icon-pause':'icon-play'
},

? ?????. -?? ? ?? ?? ?? ??? ?????. mapGetters? ???? currentIndex ?(??? 1 ?? ?? 1)? ??? ?????? currentSong? ??? ???? ?? ??? ?????. ?? ?? ?? ???? ?????.

prev(){
　　　　if(!this.songReady){
　　　　　　return;
　　　　}

 let index = this.currentIndex - 1;
 if(index === -1){　　　　//判斷播放列表界限重置
  index = this.playList.length-1;
 }
 this.setCurrentIndex(index);
 if(!this.playing){　　//判斷是否播放改變播放暫停的icon
  this.togglePlaying();
 }
 this.songReady = false;
},
next(){
 if(!this.songReady){
　　　　return;
　　 }
 let index = this.currentIndex + 1;
 if(index === this.playList.length){　　　　//判斷播放列表界限重置
  index = 0;
 }
 this.setCurrentIndex(index);
 if(!this.playing){
  this.togglePlaying();
 }
 this.songReady = false;
},

?? ??? ? ??? ?? ??? canpaly ???? ??, ??? ??? ???? error ???? ?? ???? ??? ???? ??? ???? ?? ??? ? ?? ??? ??? ?????.

songReady ???? ?????. ??? ???? ?? ?? ?? ??? ??? ? false? ?? ?????.

data(){
 return {
  songReady:false,
 }
},

ready(){
 this.songReady = true;
},
error(){
 this.songReady = true;
},

?? ???

??? ??? ??? ??-?? ?? ?????? ?? ?? timeupdate ???? ?????. ?? ??. ?? ?? ??? ????? ??? ?????. (_pad? ?? ?? ?????.)

? ??? ?? ?? ???? currentSong.duration

<p class="progress-wrapper">
 <span class="time time-l">{{ format(currentTime) }}</span>
 <p class="progress-bar-wrapper">
 <progress-bar :percent="percent" @percentChange="onProgressBarChange"></progress-bar>
 </p>
 <span class="time time-r">{{ format(currentSong.duration) }}</span>
</p>

<audio :src="currentSong.url" ref="audio" @canplay="ready" @error="error" @timeupdate="updateTime" @ended="end"></audio>

updateTime(e){
 this.currentTime = e.target.currentTime; // 獲取當前播放時間段
},

format(interval){
 interval = interval | 0;
 const minute = interval/60 | 0;
 const second = this._pad(interval % 60);
 return `${minute}:${second}`;  
},

_pad(num,n=2){
 let len = num.toString().length;
 while(len<n){
 num = &#39;0&#39; + num;
 len ++;
 }
 return num;
},

?? ??? ?? ??? ???, ?? ?? ?? ??? ??, ?? ???? ??? ???? ?? ??. ???? ?? ??? ??? ?? ???? ?????

percent(){
 return this.currentTime / this.currentSong.duration 　// 當前時長除以總時長
},

progress-bar ?? ??

<p class="progress-bar" ref="progressBar" @click="progressClick">
 <p class="bar-inner">
  <p class="progress" ref="progress"></p>
  <p class="progress-btn-wrapper" ref="progressBtn"
   @touchstart.prevent="progressTouchStart"
   @touchmove.prevent="progressTouchMove"
   @touchend="progressTouchEnd"  
  >
  <p class="progress-btn"></p>
  </p>
 </p>
 </p>

const progressBtnWidth = 16 //小球寬度

props:{
 percent:{
 type:Number,
 default:0
 }
},


watch:{
 percent(newPercent){
 if(newPercent>=0 && !this.touch.initated){　　　　
  const barWidth = this.$refs.progressBar.clientWidth - progressBtnWidth;
  const offsetWidth = newPercent * barWidth;
  this.$refs.progress.style.width = `${offsetWidth}px`;
  this.$refs.progressBtn.style.transform=`translate3d(${offsetWidth}px,0,0)`
 }
 }
}

Set drag

?? ??? ?? ?? ProgressBtn? touchstart, touchmove, touchend ??? ?? ??? ???? ???? ??? ?????. ?? ?? ????? ???? ???? ???? ??? ?? ??? ??? ????

????? ?? ??? ???? ?? ?? ?? ?? ?? ? ?? ?? ??? ?????. touchstart ??? ????? ?? this.touch.initiated? true? ???? ???? ?????? ?????. ?? ?? ?? e.touches[0].pageX? ???? ?? ?? ??? ???? ?? ?? ?? ?????.

touchmove??? ?? ???? ??? ?????? ????, ??? ???? ?? ?? ??? ??? ??? ? ?? ?????. let deltax = e.touches[0].pageX - this.touch.startX

? ??? ???? ?? ??? ??? ??? ?? ??? ? ????. ?? ??? ?? ??? ???? ??? ??? ? ????

??? ???? ??? ????? this._offset(offsetWidth) ???? ?????.

??? ??? ????? ???? ??? ????? this.touch.initiated? false? ?????. ???? ???? ?? ??? ?????. ???? currentTime ?? ??? ??? ?????. ????? pencent

??? ???? ?? ???? ????, this._offset(e.offsetX)? ????, ???

 created(){
 this.touch = {};
 },

methods:{
 progressTouchStart(e){
 this.touch.initiated = true;
 this.touch.startX = e.touches[0].pageX;
 this.touch.left = this.$refs.progress.clientWidth;
 },
 progressTouchMove(e){
 if(!this.touch.initiated){
  return;
 }
 let deltaX = e.touches[0].pageX - this.touch.startX;
 let offsetWidth = Math.min(this.$refs.progressBar.clientWidth - progressBtnWidth,Math.max(0,this.touch.left + deltaX));
 this._offset(offsetWidth);
 },
 progressTouchEnd(e){
 this.touch.initiated = false;
 this._triggerPercent();
 },
 progressClick(e){
 const rect = this.$refs.progressBar.getBoundingClientRect();
 const offsetWidth = e.pageX - rect.left;
 this._offset(offsetWidth);
 // this._offset(e.offsetX);
 this._triggerPercent();
 },
 _offset(offsetWidth){
 this.$refs.progress.style.width = `${offsetWidth}px`;
 this.$refs.progressBtn.style[transform] = `translate3d(${offsetWidth}px,0,0)`;
 },
 _triggerPercent(){
 const barWidth = this.$refs.progressBar.clientWidth - progressBtnWidth;
 const percent = this.$refs.progress.clientWidth / barWidth;
 this.$emit("percentChange",percent)
 }
},

? ?????. ? ?? "Vue.js ????? ?? ?? ??" ????"? ???? ???, ??? ??? ?? ? ????.

vue.js ?? ??? ?? ????? ??? ??? vue.js ?? ?? ?? ????? ???? ?????.

? ?? Vue ?? ????? ??? ?? ?? "Vue Practical Tutorial"? ?????.

? ??? ?? ???? ?? ??? ?????. ??? ??? ?? ????.

?? ??:

vue.js? mint-ui? ??? ??? ???? ??

?? ??? ???? ????? ?? ??? ????? Jstree?? ???? ??

in Vue ?? ???? ???

Javascript? ??? ?? ??

? ??? vue-music?? Player ?? ??? ???? ??? ?? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!