| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255 | <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';	/**	 * 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	 * @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: [uni.$u.mpMixin, uni.$u.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			}		},		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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