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- <template>
- <view
- class="u-swiper"
- :style="{
- backgroundColor: bgColor,
- height: $u.addUnit(height),
- borderRadius: $u.addUnit(radius)
- }"
- >
- <view
- class="u-swiper__loading"
- v-if="loading"
- >
- <u-loading-icon mode="circle"></u-loading-icon>
- </view>
- <swiper
- v-else
- class="u-swiper__wrapper"
- :style="{
- height: $u.addUnit(height),
- }"
- @change="change"
- :circular="circular"
- :interval="interval"
- :duration="duration"
- :autoplay="autoplay"
- :current="current"
- :currentItemId="currentItemId"
- :previousMargin="$u.addUnit(previousMargin)"
- :nextMargin="$u.addUnit(nextMargin)"
- :acceleration="acceleration"
- :displayMultipleItems="displayMultipleItems"
- :easingFunction="easingFunction"
- >
- <swiper-item
- class="u-swiper__wrapper__item"
- v-for="(item, index) in list"
- :key="index"
- >
- <view
- class="u-swiper__wrapper__item__wrapper"
- :style="[itemStyle(index)]"
- >
- <!-- 在nvue中,image图片的宽度默认为屏幕宽度,需要通过flex:1撑开,另外必须设置高度才能显示图片 -->
- <image
- class="u-swiper__wrapper__item__wrapper__image"
- v-if="getItemType(item) === 'image'"
- :src="getSource(item)"
- :mode="imgMode"
- @tap="clickHandler(index)"
- :style="{
- height: $u.addUnit(height),
- borderRadius: $u.addUnit(radius)
- }"
- ></image>
- <video
- class="u-swiper__wrapper__item__wrapper__video"
- v-if="getItemType(item) === 'video'"
- :id="`video-${index}`"
- :enable-progress-gesture="false"
- :src="getSource(item)"
- :poster="getPoster(item)"
- :title="showTitle && $u.test.object(item) && item.title ? item.title : ''"
- :style="{
- height: $u.addUnit(height)
- }"
- controls
- @tap="clickHandler(index)"
- ></video>
- <text
- v-if="showTitle && $u.test.object(item) && item.title && $u.test.image(getSource(item))"
- class="u-swiper__wrapper__item__wrapper__title u-line-1"
- >{{ item.title }}</text>
- </view>
- </swiper-item>
- </swiper>
- <view class="u-swiper__indicator" :style="[$u.addStyle(indicatorStyle)]">
- <slot name="indicator">
- <u-swiper-indicator
- v-if="!loading && indicator && !showTitle"
- :indicatorActiveColor="indicatorActiveColor"
- :indicatorInactiveColor="indicatorInactiveColor"
- :length="list.length"
- :current="currentIndex"
- :indicatorMode="indicatorMode"
- ></u-swiper-indicator>
- </slot>
- </view>
- </view>
- </template>
- <script>
- import props from './props.js';
- import mpMixin from '../../libs/mixin/mpMixin.js';
- import mixin from '../../libs/mixin/mixin.js';
- /**
- * 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://ijry.github.io/uview-plus/components/swiper.html
- * @property {Array} list 轮播图数据
- * @property {Boolean} indicator 是否显示面板指示器(默认 false )
- * @property {String} indicatorActiveColor 指示器非激活颜色(默认 '#FFFFFF' )
- * @property {String} indicatorInactiveColor 指示器的激活颜色(默认 'rgba(255, 255, 255, 0.35)' )
- * @property {String | Object} indicatorStyle 指示器样式,可通过bottom,left,right进行定位
- * @property {String} indicatorMode 指示器模式(默认 'line' )
- * @property {Boolean} autoplay 是否自动切换(默认 true )
- * @property {String | Number} current 当前所在滑块的 index(默认 0 )
- * @property {String} currentItemId 当前所在滑块的 item-id ,不能与 current 被同时指定
- * @property {String | Number} interval 滑块自动切换时间间隔(ms)(默认 3000 )
- * @property {String | Number} duration 滑块切换过程所需时间(ms)(默认 300 )
- * @property {Boolean} circular 播放到末尾后是否重新回到开头(默认 false )
- * @property {String | Number} previousMargin 前边距,可用于露出前一项的一小部分,nvue和支付宝不支持(默认 0 )
- * @property {String | Number} nextMargin 后边距,可用于露出后一项的一小部分,nvue和支付宝不支持(默认 0 )
- * @property {Boolean} acceleration 当开启时,会根据滑动速度,连续滑动多屏,支付宝不支持(默认 false )
- * @property {Number} displayMultipleItems 同时显示的滑块数量,nvue、支付宝小程序不支持(默认 1 )
- * @property {String} easingFunction 指定swiper切换缓动动画类型, 只对微信小程序有效(默认 'default' )
- * @property {String} keyName list数组中指定对象的目标属性名(默认 'url' )
- * @property {String} imgMode 图片的裁剪模式(默认 'aspectFill' )
- * @property {String | Number} height 组件高度(默认 130 )
- * @property {String} bgColor 背景颜色(默认 '#f3f4f6' )
- * @property {String | Number} radius 组件圆角,数值或带单位的字符串(默认 4 )
- * @property {Boolean} loading 是否加载中(默认 false )
- * @property {Boolean} showTitle 是否显示标题,要求数组对象中有title属性(默认 false )
- * @event {Function(index)} click 点击轮播图时触发 index:点击了第几张图片,从0开始
- * @event {Function(index)} change 轮播图切换时触发(自动或者手动切换) index:切换到了第几张图片,从0开始
- * @example <u-swiper :list="list4" keyName="url" :autoplay="false"></u-swiper>
- */
- export default {
- name: 'u-swiper',
- mixins: [mpMixin, mixin, props],
- data() {
- return {
- currentIndex: 0
- }
- },
- watch: {
- current(val, preVal) {
- if(val === preVal) return;
- this.currentIndex = val; // 和上游数据关联上
- }
- },
- emits: ["click", "change"],
- computed: {
- itemStyle() {
- return index => {
- const style = {}
- // #ifndef APP-NVUE || MP-TOUTIAO
- // 左右流出空间的写法不支持nvue和头条
- // 只有配置了此二值,才加上对应的圆角,以及缩放
- if (this.nextMargin && this.previousMargin) {
- style.borderRadius = uni.$u.addUnit(this.radius)
- if (index !== this.currentIndex) style.transform = 'scale(0.92)'
- }
- // #endif
- return style
- }
- }
- },
- methods: {
- getItemType(item) {
- if (typeof item === 'string') return uni.$u.test.video(this.getSource(item)) ? 'video' : 'image'
- if (typeof item === 'object' && this.keyName) {
- if (!item.type) return uni.$u.test.video(this.getSource(item)) ? 'video' : 'image'
- if (item.type === 'image') return 'image'
- if (item.type === 'video') return 'video'
- return 'image'
- }
- },
- // 获取目标路径,可能数组中为字符串,对象的形式,额外可指定对象的目标属性名keyName
- getSource(item) {
- if (typeof item === 'string') return item
- if (typeof item === 'object' && this.keyName) return item[this.keyName]
- else uni.$u.error('请按格式传递列表参数')
- return ''
- },
- // 轮播切换事件
- change(e) {
- // 当前的激活索引
- const {
- current
- } = e.detail
- this.pauseVideo(this.currentIndex)
- this.currentIndex = current
- this.$emit('change', e.detail)
- },
- // 切换轮播时,暂停视频播放
- pauseVideo(index) {
- const lastItem = this.getSource(this.list[index])
- if (uni.$u.test.video(lastItem)) {
- // 当视频隐藏时,暂停播放
- const video = uni.createVideoContext(`video-${index}`, this)
- video.pause()
- }
- },
- // 当一个轮播item为视频时,获取它的视频海报
- getPoster(item) {
- return typeof item === 'object' && item.poster ? item.poster : ''
- },
- // 点击某个item
- clickHandler(index) {
- this.$emit('click', index)
- }
- },
- }
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/components.scss";
- .u-swiper {
- @include flex;
- justify-content: center;
- align-items: center;
- position: relative;
- overflow: hidden;
- &__wrapper {
- flex: 1;
- &__item {
- flex: 1;
- &__wrapper {
- @include flex;
- position: relative;
- overflow: hidden;
- transition: transform 0.3s;
- flex: 1;
- &__image {
- flex: 1;
- }
- &__video {
- flex: 1;
- }
- &__title {
- position: absolute;
- background-color: rgba(0, 0, 0, 0.3);
- bottom: 0;
- left: 0;
- right: 0;
- font-size: 28rpx;
- padding: 12rpx 24rpx;
- color: #FFFFFF;
- flex: 1;
- }
- }
- }
- }
- &__indicator {
- position: absolute;
- bottom: 10px;
- }
- }
- </style>
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