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							- <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>
 
 
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