| <template> | 
|     <view class="u-swiper-wrap" :style="{ | 
|         borderRadius: `${borderRadius}rpx` | 
|     }"> | 
|         <swiper :current="elCurrent" @change="change" @animationfinish="animationfinish" :interval="interval" :circular="circular" :duration="duration" :autoplay="autoplay" | 
|          :previous-margin="effect3d ? effect3dPreviousMargin + 'rpx' : '0'" :next-margin="effect3d ? effect3dPreviousMargin + 'rpx' : '0'" | 
|          :style="{ | 
|                 height: height + 'rpx', | 
|                 backgroundColor: bgColor | 
|             }"> | 
|             <swiper-item class="u-swiper-item" v-for="(item, index) in list" :key="index"> | 
|                 <view class="u-list-image-wrap" @tap.stop.prevent="listClick(index)" :class="[uCurrent != index ? 'u-list-scale' : '']" :style="{ | 
|                         borderRadius: `${borderRadius}rpx`, | 
|                         transform: effect3d && uCurrent != index ? 'scaleY(0.9)' : 'scaleY(1)', | 
|                         margin: effect3d && uCurrent != index ? '0 20rpx' : 0, | 
|                     }"> | 
|                     <image class="u-swiper-image" :src="item[name] || item" :mode="imgMode"></image> | 
|                     <view v-if="title && item.title" class="u-swiper-title u-line-1" :style="[{ | 
|                             'padding-bottom': titlePaddingBottom | 
|                         }, titleStyle]"> | 
|                         {{ item.title }} | 
|                     </view> | 
|                 </view> | 
|             </swiper-item> | 
|         </swiper> | 
|         <view class="u-swiper-indicator" :style="{ | 
|                 top: indicatorPos == 'topLeft' || indicatorPos == 'topCenter' || indicatorPos == 'topRight' ? '12rpx' : 'auto', | 
|                 bottom: indicatorPos == 'bottomLeft' || indicatorPos == 'bottomCenter' || indicatorPos == 'bottomRight' ? '12rpx' : 'auto', | 
|                 justifyContent: justifyContent, | 
|                 padding: `0 ${effect3d ? '74rpx' : '24rpx'}` | 
|             }"> | 
|             <block v-if="mode == 'rect'"> | 
|                 <view class="u-indicator-item-rect" :class="{ 'u-indicator-item-rect-active': index == uCurrent }" v-for="(item, index) in list" | 
|                  :key="index"></view> | 
|             </block> | 
|             <block v-if="mode == 'dot'"> | 
|                 <view class="u-indicator-item-dot" :class="{ 'u-indicator-item-dot-active': index == uCurrent }" v-for="(item, index) in list" | 
|                  :key="index"></view> | 
|             </block> | 
|             <block v-if="mode == 'round'"> | 
|                 <view class="u-indicator-item-round" :class="{ 'u-indicator-item-round-active': index == uCurrent }" v-for="(item, index) in list" | 
|                  :key="index"></view> | 
|             </block> | 
|             <block v-if="mode == 'number'"> | 
|                 <view class="u-indicator-item-number">{{ uCurrent + 1 }}/{{ list.length }}</view> | 
|             </block> | 
|         </view> | 
|     </view> | 
| </template> | 
|   | 
| <script> | 
|     /** | 
|      * swiper 轮播图 | 
|      * @description 该组件一般用于导航轮播,广告展示等场景,可开箱即用 | 
|      * @tutorial https://www.uviewui.com/components/swiper.html | 
|      * @property {Array} list 轮播图数据,见官网"基本使用"说明 | 
|      * @property {Boolean} title 是否显示标题文字,需要配合list参数,见官网说明(默认false) | 
|      * @property {String} mode 指示器模式,见官网说明(默认round) | 
|      * @property {String Number} height 轮播图组件高度,单位rpx(默认250) | 
|      * @property {String} indicator-pos 指示器的位置(默认bottomCenter) | 
|      * @property {Boolean} effect3d 是否开启3D效果(默认false) | 
|      * @property {Boolean} autoplay 是否自动播放(默认true) | 
|      * @property {String Number} interval 自动轮播时间间隔,单位ms(默认2500) | 
|      * @property {Boolean} circular 是否衔接播放,见官网说明(默认true) | 
|      * @property {String} bg-color 背景颜色(默认#f3f4f6) | 
|      * @property {String Number} border-radius 轮播图圆角值,单位rpx(默认8) | 
|      * @property {Object} title-style 自定义标题样式 | 
|      * @property {String Number} effect3d-previous-margin mode = true模式的情况下,激活项与前后项之间的距离,单位rpx(默认50) | 
|      * @property {String} img-mode 图片的裁剪模式,详见image组件裁剪模式(默认aspectFill) | 
|      * @event {Function} click 点击轮播图时触发 | 
|      * @example <u-swiper :list="list" mode="dot" indicator-pos="bottomRight"></u-swiper> | 
|      */ | 
|     export default { | 
|         name: "u-swiper", | 
|         props: { | 
|             // 轮播图的数据,格式如:[{image: 'xxxx', title: 'xxxx'},{image: 'yyyy', title: 'yyyy'}],其中title字段可选 | 
|             list: { | 
|                 type: Array, | 
|                 default () { | 
|                     return []; | 
|                 } | 
|             }, | 
|             // 是否显示title标题 | 
|             title: { | 
|                 type: Boolean, | 
|                 default: false | 
|             }, | 
|             // 用户自定义的指示器的样式 | 
|             indicator: { | 
|                 type: Object, | 
|                 default () { | 
|                     return {}; | 
|                 } | 
|             }, | 
|             // 圆角值 | 
|             borderRadius: { | 
|                 type: [Number, String], | 
|                 default: 8 | 
|             }, | 
|             // 隔多久自动切换 | 
|             interval: { | 
|                 type: [String, Number], | 
|                 default: 3000 | 
|             }, | 
|             // 指示器的模式,rect|dot|number|round | 
|             mode: { | 
|                 type: String, | 
|                 default: 'round' | 
|             }, | 
|             // list的高度,单位rpx | 
|             height: { | 
|                 type: [Number, String], | 
|                 default: 250 | 
|             }, | 
|             // 指示器的位置,topLeft|topCenter|topRight|bottomLeft|bottomCenter|bottomRight | 
|             indicatorPos: { | 
|                 type: String, | 
|                 default: 'bottomCenter' | 
|             }, | 
|             // 是否开启缩放效果 | 
|             effect3d: { | 
|                 type: Boolean, | 
|                 default: false | 
|             }, | 
|             // 3D模式的情况下,激活item与前后item之间的距离,单位rpx | 
|             effect3dPreviousMargin: { | 
|                 type: [Number, String], | 
|                 default: 50 | 
|             }, | 
|             // 是否自动播放 | 
|             autoplay: { | 
|                 type: Boolean, | 
|                 default: true | 
|             }, | 
|             // 自动轮播时间间隔,单位ms | 
|             duration: { | 
|                 type: [Number, String], | 
|                 default: 500 | 
|             }, | 
|             // 是否衔接滑动,即到最后一张时接着滑动,是否自动切换到第一张 | 
|             circular: { | 
|                 type: Boolean, | 
|                 default: true | 
|             }, | 
|             // 图片的裁剪模式  | 
|             imgMode: { | 
|                 type: String, | 
|                 default: 'aspectFill' | 
|             }, | 
|             // 从list数组中读取的图片的属性名 | 
|             name: { | 
|                 type: String, | 
|                 default: 'image' | 
|             }, | 
|             // 背景颜色 | 
|             bgColor: { | 
|                 type: String, | 
|                 default: '#f3f4f6' | 
|             }, | 
|             // 初始化时,默认显示第几项 | 
|             current: { | 
|                 type: [Number, String], | 
|                 default: 0 | 
|             }, | 
|             // 标题的样式,对象形式 | 
|             titleStyle: { | 
|                 type: Object, | 
|                 default() { | 
|                     return {} | 
|                 } | 
|             } | 
|         }, | 
|         watch: { | 
|             // 如果外部的list发生变化,判断长度是否被修改,如果前后长度不一致,重置uCurrent值,避免溢出 | 
|             list(nVal, oVal) { | 
|                 if(nVal.length !== oVal.length) this.uCurrent = 0; | 
|             }, | 
|             // 监听外部current的变化,实时修改内部依赖于此测uCurrent值,如果更新了current,而不是更新uCurrent, | 
|             // 就会错乱,因为指示器是依赖于uCurrent的 | 
|             current(n) { | 
|                 this.uCurrent = n; | 
|             } | 
|         }, | 
|         data() { | 
|             return { | 
|                 uCurrent: this.current // 当前活跃的swiper-item的index | 
|             }; | 
|         }, | 
|         computed: { | 
|             justifyContent() { | 
|                 if (this.indicatorPos == 'topLeft' || this.indicatorPos == 'bottomLeft') return 'flex-start'; | 
|                 if (this.indicatorPos == 'topCenter' || this.indicatorPos == 'bottomCenter') return 'center'; | 
|                 if (this.indicatorPos == 'topRight' || this.indicatorPos == 'bottomRight') return 'flex-end'; | 
|             }, | 
|             titlePaddingBottom() { | 
|                 let tmp = 0; | 
|                 if (this.mode == 'none') return '12rpx'; | 
|                 if (['bottomLeft', 'bottomCenter', 'bottomRight'].indexOf(this.indicatorPos) >= 0 && this.mode == 'number') { | 
|                     tmp = '60rpx'; | 
|                 } else if (['bottomLeft', 'bottomCenter', 'bottomRight'].indexOf(this.indicatorPos) >= 0 && this.mode != 'number') { | 
|                     tmp = '40rpx'; | 
|                 } else { | 
|                     tmp = '12rpx'; | 
|                 } | 
|                 return tmp; | 
|             }, | 
|             // 因为uni的swiper组件的current参数只接受Number类型,这里做一个转换 | 
|             elCurrent() { | 
|                 return Number(this.current); | 
|             } | 
|         }, | 
|         methods: { | 
|             listClick(index) { | 
|                 this.$emit('click', index); | 
|             }, | 
|             change(e) { | 
|                 let current = e.detail.current; | 
|                 this.uCurrent = current; | 
|                 // 发出change事件,表示当前自动切换的index,从0开始 | 
|                 this.$emit('change', current); | 
|             }, | 
|             // 头条小程序不支持animationfinish事件,改由change事件 | 
|             // 暂不监听此事件,因为不再给swiper绑定uCurrent属性 | 
|             animationfinish(e) { | 
|                 // #ifndef MP-TOUTIAO | 
|                 // this.uCurrent = e.detail.current; | 
|                 // #endif | 
|             } | 
|         } | 
|     }; | 
| </script> | 
|   | 
| <style lang="scss" scoped> | 
|     @import "../../libs/css/style.components.scss"; | 
|      | 
|     .u-swiper-wrap { | 
|         position: relative; | 
|         overflow: hidden; | 
|         transform: translateY(0); | 
|     } | 
|   | 
|     .u-swiper-image { | 
|         width: 100%; | 
|         will-change: transform; | 
|         height: 100%; | 
|         /* #ifndef APP-NVUE */ | 
|         display: block; | 
|         /* #endif */ | 
|         /* #ifdef H5 */ | 
|         pointer-events: none; | 
|         /* #endif */ | 
|     } | 
|   | 
|     .u-swiper-indicator { | 
|         padding: 0 24rpx; | 
|         position: absolute; | 
|         @include vue-flex; | 
|         width: 100%; | 
|         z-index: 1; | 
|     } | 
|   | 
|     .u-indicator-item-rect { | 
|         width: 26rpx; | 
|         height: 8rpx; | 
|         margin: 0 6rpx; | 
|         transition: all 0.5s; | 
|         background-color: rgba(0, 0, 0, 0.3); | 
|     } | 
|   | 
|     .u-indicator-item-rect-active { | 
|         background-color: rgba(255, 255, 255, 0.8); | 
|     } | 
|   | 
|     .u-indicator-item-dot { | 
|         width: 14rpx; | 
|         height: 14rpx; | 
|         margin: 0 6rpx; | 
|         border-radius: 20rpx; | 
|         transition: all 0.5s; | 
|         background-color: rgba(0, 0, 0, 0.3); | 
|     } | 
|   | 
|     .u-indicator-item-dot-active { | 
|         background-color: rgba(255, 255, 255, 0.8); | 
|     } | 
|   | 
|     .u-indicator-item-round { | 
|         width: 14rpx; | 
|         height: 14rpx; | 
|         margin: 0 6rpx; | 
|         border-radius: 20rpx; | 
|         transition: all 0.5s; | 
|         background-color: rgba(0, 0, 0, 0.3); | 
|     } | 
|   | 
|     .u-indicator-item-round-active { | 
|         width: 34rpx; | 
|         background-color: rgba(255, 255, 255, 0.8); | 
|     } | 
|   | 
|     .u-indicator-item-number { | 
|         padding: 6rpx 16rpx; | 
|         line-height: 1; | 
|         background-color: rgba(0, 0, 0, 0.3); | 
|         border-radius: 100rpx; | 
|         font-size: 26rpx; | 
|         color: rgba(255, 255, 255, 0.8); | 
|     } | 
|   | 
|     .u-list-scale { | 
|         transform-origin: center center; | 
|     } | 
|   | 
|     .u-list-image-wrap { | 
|         width: 100%; | 
|         height: 100%; | 
|         flex: 1; | 
|         transition: all 0.5s; | 
|         overflow: hidden; | 
|         box-sizing: content-box; | 
|         position: relative; | 
|     } | 
|   | 
|     .u-swiper-title { | 
|         position: absolute; | 
|         background-color: rgba(0, 0, 0, 0.3); | 
|         bottom: 0; | 
|         left: 0; | 
|         width: 100%; | 
|         font-size: 28rpx; | 
|         padding: 12rpx 24rpx; | 
|         color: rgba(255, 255, 255, 0.9); | 
|     } | 
|   | 
|     .u-swiper-item { | 
|         @include vue-flex; | 
|         overflow: hidden; | 
|         align-items: center; | 
|     } | 
| </style> |