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	uni-app引入使用uView
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		| @@ -0,0 +1,28 @@ | ||||
| // 引入bindingx,此库类似于微信小程序wxs,目的是让js运行在视图层,减少视图层和逻辑层的通信折损 | ||||
| const BindingX = uni.requireNativePlugin('bindingx') | ||||
|  | ||||
| export default { | ||||
|     methods: { | ||||
|         // 此处不写注释,请自行体会 | ||||
|         nvueScrollHandler(e) { | ||||
|             const anchor = this.$refs['u-scroll-list__scroll-view'].ref | ||||
|             const element = this.$refs['u-scroll-list__indicator__line__bar'].ref | ||||
|             const scrollLeft = e.contentOffset.x | ||||
|             const contentSize = e.contentSize.width | ||||
|             const { scrollWidth } = this | ||||
|             const barAllMoveWidth = this.indicatorWidth - this.indicatorBarWidth | ||||
|             // 在安卓和iOS上,需要除的倍数不一样,iOS需要除以2 | ||||
|             const actionNum = uni.$u.os() === 'ios' ? 2 : 1 | ||||
|             const expression = `(x / ${actionNum}) / ${contentSize - scrollWidth} * ${barAllMoveWidth}` | ||||
|             BindingX.bind({ | ||||
|                 anchor, | ||||
|                 eventType: 'scroll', | ||||
|                 props: [{ | ||||
|                     element, | ||||
|                     property: 'transform.translateX', | ||||
|                     expression | ||||
|                 }] | ||||
|             }) | ||||
|         } | ||||
|     } | ||||
| } | ||||
| @@ -0,0 +1,34 @@ | ||||
| export default { | ||||
|     props: { | ||||
|         // 指示器的整体宽度 | ||||
|         indicatorWidth: { | ||||
|             type: [String, Number], | ||||
|             default: uni.$u.props.scrollList.indicatorWidth | ||||
|         }, | ||||
|         // 滑块的宽度 | ||||
|         indicatorBarWidth: { | ||||
|             type: [String, Number], | ||||
|             default: uni.$u.props.scrollList.indicatorBarWidth | ||||
|         }, | ||||
|         // 是否显示面板指示器 | ||||
|         indicator: { | ||||
|             type: Boolean, | ||||
|             default: uni.$u.props.scrollList.indicator | ||||
|         }, | ||||
|         // 指示器非激活颜色 | ||||
|         indicatorColor: { | ||||
|             type: String, | ||||
|             default: uni.$u.props.scrollList.indicatorColor | ||||
|         }, | ||||
|         // 指示器的激活颜色 | ||||
|         indicatorActiveColor: { | ||||
|             type: String, | ||||
|             default: uni.$u.props.scrollList.indicatorActiveColor | ||||
|         }, | ||||
|         // 指示器样式,可通过bottom,left,right进行定位 | ||||
|         indicatorStyle: { | ||||
|             type: [String, Object], | ||||
|             default: uni.$u.props.scrollList.indicatorStyle | ||||
|         } | ||||
|     } | ||||
| } | ||||
| @@ -0,0 +1,50 @@ | ||||
| function scroll(event, ownerInstance) { | ||||
| 	// detail中含有scroll-view的信息,比如scroll-view的实际宽度,当前时间点scroll-view的移动距离等 | ||||
| 	var detail = event.detail | ||||
| 	var scrollWidth = detail.scrollWidth | ||||
| 	var scrollLeft = detail.scrollLeft | ||||
| 	// 获取当前组件的dataset,说白了就是祸国殃民的腾xun搞出来的垃ji | ||||
| 	var dataset = event.currentTarget.dataset | ||||
| 	// 此为scroll-view外部包裹元素的宽度 | ||||
| 	// 某些HX版本(3.1.18),发现view元素中大写的data-scrollWidth,在wxs中,变成了全部小写,所以这里需要特别处理 | ||||
| 	var scrollComponentWidth = dataset.scrollWidth || dataset.scrollwidth || 0 | ||||
| 	// 指示器和滑块的宽度 | ||||
| 	var indicatorWidth = dataset.indicatorWidth || dataset.indicatorwidth || 0 | ||||
| 	var barWidth = dataset.barWidth || dataset.barwidth || 0 | ||||
| 	// 此处的计算理由为:scroll-view的滚动距离与目标滚动距离(scroll-view的实际宽度减去包裹元素的宽度)之比,等于滑块当前移动距离与总需 | ||||
| 	// 滑动距离(指示器的总宽度减去滑块宽度)的比值 | ||||
| 	var x = scrollLeft / (scrollWidth - scrollComponentWidth) * (indicatorWidth - barWidth) | ||||
| 	setBarStyle(ownerInstance, x) | ||||
| } | ||||
|  | ||||
| // 由于webview的无能,无法保证scroll-view在滑动过程中,一直触发scroll事件,会导致 | ||||
| // 无法监听到某些滚动值,当在首尾临界值无法监听到时,这是致命的,因为错失这些值会导致滑块无法回到起点和终点 | ||||
| // 所以这里需要对临界值做监听并处理 | ||||
| function scrolltolower(event, ownerInstance) { | ||||
| 	ownerInstance.callMethod('scrollEvent', 'right') | ||||
| 	// 获取当前组件的dataset | ||||
| 	var dataset = event.currentTarget.dataset | ||||
| 	// 指示器和滑块的宽度 | ||||
| 	var indicatorWidth = dataset.indicatorWidth || dataset.indicatorwidth || 0 | ||||
| 	var barWidth = dataset.barWidth || dataset.barwidth || 0 | ||||
| 	// scroll-view滚动到右边终点时,将滑块也设置为到右边的终点,它所需移动的距离为:指示器宽度 - 滑块宽度 | ||||
| 	setBarStyle(ownerInstance, indicatorWidth - barWidth) | ||||
| } | ||||
|  | ||||
| function scrolltoupper(event, ownerInstance) { | ||||
| 	ownerInstance.callMethod('scrollEvent', 'left') | ||||
| 	// 滚动到左边时,将滑块设置为0的偏移距离,回到起点 | ||||
| 	setBarStyle(ownerInstance, 0) | ||||
| } | ||||
|  | ||||
| function setBarStyle(ownerInstance, x) { | ||||
| 	ownerInstance.selectComponent('.u-scroll-list__indicator__line__bar') && ownerInstance.selectComponent('.u-scroll-list__indicator__line__bar').setStyle({ | ||||
| 		transform: 'translateX(' + x + 'px)' | ||||
| 	}) | ||||
| } | ||||
|  | ||||
| module.exports = { | ||||
| 	scroll: scroll, | ||||
| 	scrolltolower: scrolltolower, | ||||
| 	scrolltoupper: scrolltoupper | ||||
| } | ||||
| @@ -0,0 +1,226 @@ | ||||
| <template> | ||||
| 	<view | ||||
| 		class="u-scroll-list" | ||||
| 		ref="u-scroll-list" | ||||
| 	> | ||||
| 		<!-- #ifdef APP-NVUE --> | ||||
| 		<!-- nvue使用bindingX实现,以得到更好的性能 --> | ||||
| 		<scroller | ||||
| 			class="u-scroll-list__scroll-view" | ||||
| 			ref="u-scroll-list__scroll-view" | ||||
| 			scroll-direction="horizontal" | ||||
| 			:show-scrollbar="false" | ||||
| 			:offset-accuracy="1" | ||||
| 			@scroll="nvueScrollHandler" | ||||
| 		> | ||||
| 			<view class="u-scroll-list__scroll-view__content"> | ||||
| 				<slot /> | ||||
| 			</view> | ||||
| 		</scroller> | ||||
| 		<!-- #endif --> | ||||
| 		<!-- #ifndef APP-NVUE --> | ||||
| 		<!-- #ifdef MP-WEIXIN || APP-VUE || H5 || MP-QQ --> | ||||
| 		<!-- 以上平台,支持wxs --> | ||||
| 		<scroll-view | ||||
| 			class="u-scroll-list__scroll-view" | ||||
| 			scroll-x | ||||
| 			@scroll="wxs.scroll" | ||||
| 			@scrolltoupper="wxs.scrolltoupper" | ||||
| 			@scrolltolower="wxs.scrolltolower" | ||||
| 			:data-scrollWidth="scrollWidth" | ||||
| 			:data-barWidth="$u.getPx(indicatorBarWidth)" | ||||
| 			:data-indicatorWidth="$u.getPx(indicatorWidth)" | ||||
| 			:show-scrollbar="false" | ||||
| 			:upper-threshold="0" | ||||
| 			:lower-threshold="0" | ||||
| 		> | ||||
| 			<!-- #endif --> | ||||
| 			<!-- #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ --> | ||||
| 			<!-- 非以上平台,只能使用普通js实现 --> | ||||
| 			<scroll-view | ||||
| 				class="u-scroll-list__scroll-view" | ||||
| 				scroll-x | ||||
| 				@scroll="scrollHandler" | ||||
| 				@scrolltoupper="scrolltoupperHandler" | ||||
| 				@scrolltolower="scrolltolowerHandler" | ||||
| 				:show-scrollbar="false" | ||||
| 				:upper-threshold="0" | ||||
| 				:lower-threshold="0" | ||||
| 			> | ||||
| 				<!-- #endif --> | ||||
| 				<view class="u-scroll-list__scroll-view__content"> | ||||
| 					<slot /> | ||||
| 				</view> | ||||
| 			</scroll-view> | ||||
| 			<!-- #endif --> | ||||
| 			<view | ||||
| 				class="u-scroll-list__indicator" | ||||
| 				v-if="indicator" | ||||
| 				:style="[$u.addStyle(indicatorStyle)]" | ||||
| 			> | ||||
| 				<view | ||||
| 					class="u-scroll-list__indicator__line" | ||||
| 					:style="[lineStyle]" | ||||
| 				> | ||||
| 					<view | ||||
| 						class="u-scroll-list__indicator__line__bar" | ||||
| 						:style="[barStyle]" | ||||
| 						ref="u-scroll-list__indicator__line__bar" | ||||
| 					></view> | ||||
| 				</view> | ||||
| 			</view> | ||||
| 	</view> | ||||
| </template> | ||||
|  | ||||
| <!-- #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ --> | ||||
| <script | ||||
| 	src="./scrollWxs.wxs" | ||||
| 	module="wxs" | ||||
| 	lang="wxs" | ||||
| ></script> | ||||
| <!-- #endif --> | ||||
|  | ||||
| <script> | ||||
| /** | ||||
|  * scrollList 横向滚动列表 | ||||
|  * @description 该组件一般用于同时展示多个商品、分类的场景,也可以完成左右滑动的列表。 | ||||
|  * @tutorial https://www.uviewui.com/components/scrollList.html | ||||
|  * @property {String | Number}	indicatorWidth			指示器的整体宽度 (默认 50 ) | ||||
|  * @property {String | Number}	indicatorBarWidth		滑块的宽度 (默认 20 ) | ||||
|  * @property {Boolean}			indicator				是否显示面板指示器 (默认 true ) | ||||
|  * @property {String}			indicatorColor			指示器非激活颜色 (默认 '#f2f2f2' ) | ||||
|  * @property {String}			indicatorActiveColor	指示器的激活颜色 (默认 '#3c9cff' ) | ||||
|  * @property {String | Object}	indicatorStyle			指示器样式,可通过bottom,left,right进行定位 | ||||
|  * @event {Function} left	滑动到左边时触发 | ||||
|  * @event {Function} right	滑动到右边时触发 | ||||
|  * @example | ||||
|  */ | ||||
| // #ifdef APP-NVUE | ||||
| const dom = uni.requireNativePlugin('dom') | ||||
| import nvueMixin from "./nvue.js" | ||||
| // #endif | ||||
| import props from './props.js'; | ||||
| export default { | ||||
| 	name: 'u-scroll-list', | ||||
| 	mixins: [uni.$u.mpMixin, uni.$u.mixin, props], | ||||
| 	// #ifdef APP-NVUE | ||||
| 	mixins: [uni.$u.mpMixin, uni.$u.mixin, nvueMixin, props], | ||||
| 	// #endif | ||||
| 	data() { | ||||
| 		return { | ||||
| 			scrollInfo: { | ||||
| 				scrollLeft: 0, | ||||
| 				scrollWidth: 0 | ||||
| 			}, | ||||
| 			scrollWidth: 0 | ||||
| 		} | ||||
| 	}, | ||||
| 	computed: { | ||||
| 		// 指示器为线型的样式 | ||||
| 		barStyle() { | ||||
| 			const style = {} | ||||
| 			// #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ | ||||
| 			// 此为普通js方案,只有在非nvue和不支持wxs方案的端才使用、 | ||||
| 			// 此处的计算理由为:scroll-view的滚动距离与目标滚动距离(scroll-view的实际宽度减去包裹元素的宽度)之比,等于滑块当前移动距离与总需 | ||||
| 			// 滑动距离(指示器的总宽度减去滑块宽度)的比值 | ||||
| 			const scrollLeft = this.scrollInfo.scrollLeft, | ||||
| 				scrollWidth = this.scrollInfo.scrollWidth, | ||||
| 				barAllMoveWidth = this.indicatorWidth - this.indicatorBarWidth | ||||
| 			const x = scrollLeft / (scrollWidth - this.scrollWidth) * barAllMoveWidth | ||||
| 			style.transform = `translateX(${ x }px)` | ||||
| 			// #endif | ||||
| 			// 设置滑块的宽度和背景色,是每个平台都需要的 | ||||
| 			style.width = uni.$u.addUnit(this.indicatorBarWidth) | ||||
| 			style.backgroundColor = this.indicatorActiveColor | ||||
| 			return style | ||||
| 		}, | ||||
| 		lineStyle() { | ||||
| 			const style = {} | ||||
| 			// 指示器整体的样式,需要设置其宽度和背景色 | ||||
| 			style.width = uni.$u.addUnit(this.indicatorWidth) | ||||
| 			style.backgroundColor = this.indicatorColor | ||||
| 			return style | ||||
| 		} | ||||
| 	}, | ||||
| 	mounted() { | ||||
| 		this.init() | ||||
| 	}, | ||||
| 	methods: { | ||||
| 		init() { | ||||
| 			this.getComponentWidth() | ||||
| 		}, | ||||
| 		// #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ | ||||
| 		// scroll-view触发滚动事件 | ||||
| 		scrollHandler(e) { | ||||
| 			this.scrollInfo = e.detail | ||||
| 		}, | ||||
| 		scrolltoupperHandler() { | ||||
| 			this.scrollEvent('left') | ||||
| 			this.scrollInfo.scrollLeft = 0 | ||||
| 		}, | ||||
| 		scrolltolowerHandler() { | ||||
| 			this.scrollEvent('right') | ||||
| 			// 在普通js方案中,滚动到右边时,通过设置this.scrollInfo,模拟出滚动到右边的情况 | ||||
| 			// 因为上方是用过computed计算的,设置后,会自动调整滑块的位置 | ||||
| 			this.scrollInfo.scrollLeft = uni.$u.getPx(this.indicatorWidth) - uni.$u.getPx(this.indicatorBarWidth) | ||||
| 		}, | ||||
| 		// #endif | ||||
| 		// | ||||
| 		scrollEvent(status) { | ||||
| 			this.$emit(status) | ||||
| 		}, | ||||
| 		// 获取组件的宽度 | ||||
| 		async getComponentWidth() { | ||||
| 			// 延时一定时间,以获取dom尺寸 | ||||
| 			await uni.$u.sleep(30) | ||||
| 			// #ifndef APP-NVUE | ||||
| 			this.$uGetRect('.u-scroll-list').then(size => { | ||||
| 				this.scrollWidth = size.width | ||||
| 			}) | ||||
| 			// #endif | ||||
|  | ||||
| 			// #ifdef APP-NVUE | ||||
| 			const ref = this.$refs['u-scroll-list'] | ||||
| 			ref && dom.getComponentRect(ref, (res) => { | ||||
| 				this.scrollWidth = res.size.width | ||||
| 			}) | ||||
| 			// #endif | ||||
| 		}, | ||||
| 	} | ||||
| } | ||||
| </script> | ||||
|  | ||||
| <style lang="scss" scoped> | ||||
| @import "../../libs/css/components.scss"; | ||||
|  | ||||
| .u-scroll-list { | ||||
| 	padding-bottom: 10px; | ||||
|  | ||||
| 	&__scroll-view { | ||||
| 		@include flex; | ||||
|  | ||||
| 		&__content { | ||||
| 			@include flex; | ||||
| 		} | ||||
| 	} | ||||
|  | ||||
| 	&__indicator { | ||||
| 		@include flex; | ||||
| 		justify-content: center; | ||||
| 		margin-top: 15px; | ||||
|  | ||||
| 		&__line { | ||||
| 			width: 60px; | ||||
| 			height: 4px; | ||||
| 			border-radius: 100px; | ||||
| 			overflow: hidden; | ||||
|  | ||||
| 			&__bar { | ||||
| 				width: 20px; | ||||
| 				height: 4px; | ||||
| 				border-radius: 100px; | ||||
| 			} | ||||
| 		} | ||||
| 	} | ||||
| } | ||||
| </style> | ||||
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