| <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>
 |