Vue学习笔记-项目开发4.7动画效果

渐隐渐现的动画效果可能在多个地方都会用的到，所以将其编写成一个公共类
1、建公共类

2、编写动画效果的vue组件
实现动画效果，其实是将组件包裹在transition标签中，然后将需要用到的动画通过插槽的进行插入

<template>
  <transition>
    <slot></slot>
  </transition>
</template>

<script>
export default {
  name: 'Fade'
}
</script>

<style lang="stylus" scoped>
  .v-enter, .v-leave-to
    opacity 0
  .v-enter-active, .v-leave-active
    transition opacity .5s
</style>

3、编写使用组件
使用组件只需要将公共动画组件引入，然后用动画组件包裹需要用到动画的组件，这样便可以实现动画效果了

<fade-animation>
  <common-gallary :imgs="bannerImgs" v-show="showGallary" @close="handleGallyClose"></common-gallary>
</fade-animation>

<template>
  <div>
    <div class="banner" @click="handleBannerClick">
      <img class="banner-img" :src="bannerImg">
      <div class="banner-info">
        <div class="banner-title">{{this.sightName}}</div>
        <div class="banner-number">
          <span class="iconfont banner-icon">&#xe63a;</span>
          {{this.bannerImgs.length}}
        </div>
      </div>
    </div>
    <fade-animation>
      <common-gallary :imgs="bannerImgs" v-show="showGallary" @close="handleGallyClose"></common-gallary>
    </fade-animation>
  </div>
</template>

<script>
import CommonGallary from 'common/gallary/Gallary'
import FadeAnimation from 'common/fade/FadeAnimation'
export default {
  name: 'Detail',
  props: {
    sightName: String,
    bannerImg: String,
    bannerImgs: Array
  },
  data () {
    return {
      showGallary: false
    }
  },
  methods: {
    handleBannerClick () {
      this.showGallary = true
    },
    handleGallyClose () {
      this.showGallary = false
    }
  },
  components: {
    CommonGallary,
    FadeAnimation
  }
}
</script>

<style lang="stylus" scoped>
  .banner
    position relative
    overflow hidden
    height 0
    padding-bottom 55%
    .banner-img
      width 100%
    .banner-info
      display flex
      position absolute
      left 0
      right 0
      bottom 0
      line-height .6rem
      color #fff
      // 渐变色
      background-image linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.8))
      .banner-title
        flex 1
        font-size .32rem
        padding 0 .2rem
      .banner-number
        margin-top .14rem
        padding 0 .4rem
        line-height .32rem
        height .32rem
        border-radius .2rem
        background rgba(0, 0, 0, .8)
        font-size .24rem
        .banner-icon
          font-size .24rem
</style>