Vue中使用create-keyframe-animation与动画钩子完成复杂动画

<template>
 <div class="index">
 <transition>
  <div class="cd-box" ref="cdWrapper" v-show="fullScreen">
 // CD图片 (动画的时候图片初始位置)
  <img src="../assets/bj.png" alt="" class="bg">
  </div>
 </transition>
 <button @click="switchMode" style="position:absolute;top:0;left:10px;">start</button>
 <transition>
 // 下面播放状态框
  <div class="mini-player-box" v-show="!fullScreen">
 // 状态看里面的图片 （动画的时候图片结束位置）
  <div class="mini-img">
   <img src="../assets/bj.png" alt="" >
  </div>
  </div>
 </transition>
 </div>
</template>

.cd-box
 &.v-enter-active, &.v-leave-active
  transition: all 0.4s
 &.v-enter, &.v-leave-to
  opacity: 0
.mini-player-box
 &.v-enter-active, &.v-leave-active
  transition: all 0.4s 
 &.v-enter, &.v-leave-to
  transform: translate3d(0, 40px, 0)
  opacity: 0 

<transition 
  @enter="enter"
  @after-enter="afterEnter"
  @leave="leave"
  @after-leave="afterLeave"
 > 
  <div class="cd-box" ref="cdWrapper" v-show="fullScreen">
  <img src="../assets/bj.png" alt="" class="bg">
  </div>
 </transition>

// 获得偏移量，以及scale
_getPosAndScale() {
 // 左下角图片的宽度
  const targetWidth = 40
 // cd宽度
  const width = 300
  const scale = targetWidth / width
  // 这里的 x,y要算，过程省略，无非就是加加减减，这的x，y都是算出来了的
  const x = -167.5
  const y = 497
  return {x ,y , scale}
 },

 // enter是指当 cd从隐藏到显示的动画，
 enter(el, done) {
  const {x, y, scale} = this._getPosAndScale()

  let animation = {
  // 第0帧的时候，先让图片缩小，显示在右下角
  0: {
   transform: `translate3d(${x}px, ${y}px, 0) scale(${scale})`
  },
  // 60%的时候，让图片回到cd中心，变大
  60: {
   transform: `translate3d(0 ,0 , 0) scale(1.1)`
  },
  // 变回原来的尺寸，会有一个回弹的效果
  100: {
   transform: `translate3d(0 ,0 , 0) scale(1)`
  }
  }
  // 动画的一些配置
  animations.registerAnimation({
  name: 'move',
  animation,
  presets: {
   duration: 400,
   easing: 'linear'
  }
  })
//运行动画
 animations.runAnimation(this.$refs.cdWrapper, 'move', done)
 },
 afterEnter(){
 //运行完动画之后，注销掉动画
  animations.unregisterAnimation('move')
  this.$refs.cdWrapper.style.animation = ''
 },
 // leave是指 cd从显示到隐藏的动画
 leave(el, done) {
  this.$refs.cdWrapper.style.transition = 'all 0.4s'
  const {x, y, scale} = this._getPosAndScale()
  // 这里我们只要直接移动变小就可以了
  this.$refs.cdWrapper.style['transform'] = `translate3d(${x}px,${y}px,0) scale(${scale})`
   
 // 监听transitionend 事件在 CSS 完成过渡后触发done回调  
 this.$refs.cdWrapper.addEventListener('transitionend', () => {
  done()
  })
 },
 afterLeave() {
  this.$refs.cdWrapper.style.transition = ''
  this.$refs.cdWrapper.style['transform'] = ''
 }

let animation = {
  0: {
   transform: `translate3d(${x}px, ${y}px, 0) scale(${scale}) rotate(0deg)`
  },
  60: {
   transform: `translate3d(0 ,0 , 0) scale(1.1) rotate(365deg)`
  },
  100: {
   transform: `translate3d(0 ,0 , 0) scale(1) rotate(360deg)`
  }
  }

<template>
 <div class="index">
 <transition 
  @enter="enter"
  @after-enter="afterEnter"
  @leave="leave"
  @after-leave="afterLeave"
 > 
  <div class="cd-box" ref="cdWrapper" v-show="fullScreen">
  <img src="../assets/bj.png" alt="" class="bg">
  </div>
 </transition>
 <button @click="switchMode" style="position:absolute;top:0;left:10px;">start</button>
 <transition>
  <div class="mini-box" v-show="!fullScreen">
  <div class="mini-img">
   <img src="../assets/bj.png" alt="" >
  </div>
  </div>
 </transition>
 </div>
</template>

<script>
/* eslint-disable */
import animations from 'create-keyframe-animation'
export default {
 components: {},
 props: {},
 data() {
 return {
  fullScreen: true
 }
 },
 computed: {},
 watch: {},
 created() {},
 mounted() {
 // const {x, y, scale} = this._getPosAndScale()
 console.log(this._getPosAndScale())
 console.log(animations)
 },
 methods: {
 switchMode() {
  this.fullScreen = !this.fullScreen
 },
 _getPosAndScale() {
  const targetWidth = 40
  const paddingLeft = 20
  const paddingBottom = 20
  const paddingTop = 0
  const width = 300
  const scale = targetWidth / width
  const x = -(window.innerWidth / 2 - paddingLeft)
  const y = window.innerHeight - paddingTop - paddingBottom - width / 2
  return {x ,y , scale}
 },
 enter(el, done) {
  const {x, y, scale} = this._getPosAndScale()

  let animation = {
  0: {
   transform: `translate3d(${x}px, ${y}px, 0) scale(${scale}) rotate(0deg)`
  },
  60: {
   transform: `translate3d(0 ,0 , 0) scale(1.1) rotate(365deg)`
  },
  100: {
   transform: `translate3d(0 ,0 , 0) scale(1) rotate(360deg)`
  }
  }
  animations.registerAnimation({
  name: 'move',
  animation,
  presets: {
   duration: 400,
   easing: 'linear'
  }
  })
  animations.runAnimation(this.$refs.cdWrapper, 'move', done)
 },
 afterEnter(){
  animations.unregisterAnimation('move')
  this.$refs.cdWrapper.style.animation = ''
 },
 leave(el, done) {
  this.$refs.cdWrapper.style.transition = 'all 0.4s'
  const {x, y, scale} = this._getPosAndScale()
  this.$refs.cdWrapper.style['transform'] = `translate3d(${x}px,${y}px,0) scale(${scale})`
  // this.$refs.cdWrapper.style['transform'] = 'rotate(360deg)'
  // transitionend 事件在 CSS 完成过渡后触发
  this.$refs.cdWrapper.addEventListener('transitionend', () => {
  done()
  })
 },
 afterLeave() {
  this.$refs.cdWrapper.style.transition = ''
  this.$refs.cdWrapper.style['transform'] = ''
 }
 }
}
</script>
<style lang="stylus" scoped>
.index
 background: #eee
 width: 100%
 height: 100%
 display : flex
 flex-direction: column
 justify-content : space-between
 align-items: center
 .cd-box
 display : flex
 justify-content : center
 align-items : center
 width: 300px
 height: 300px
 background: #eee
 border-radius: 50%
 &.v-enter-active, &.v-leave-active
  transition: all 0.4s
 &.v-enter, &.v-leave-to
  opacity: 0
 .bg
  width: 300px
  height: 300px
  border-radius: 50%
 .mini-box
 position: absolute
 bottom: 0
 right: 0
 left: 0
 display : flex 
 align-items center 
 border: 1px solid #555
 width: 100%
 height: 40px
 box-sizing : border-box
 &.v-enter-active, &.v-leave-active
  transition: all 0.4s 
 &.v-enter, &.v-leave-to
  transform: translate3d(0, 40px, 0)
  opacity: 0
 .mini-img
  height: 40px
  width: 40px
  box-sizing : border-box
  img
  height: 100%
  width: 100%
</style>