uni-ui 流式布局组件

src/components/uni-col/uni-col.vue

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+<template>
+	<!-- #ifndef APP-NVUE -->
+	<view :class="['uni-col', sizeClass, pointClassList]" :style="{
+		paddingLeft:`${Number(gutter)}rpx`,
+		paddingRight:`${Number(gutter)}rpx`,
+	}">
+		<slot></slot>
+	</view>
+	<!-- #endif -->
+	<!-- #ifdef APP-NVUE -->
+	<!-- 在nvue上，类名样式不生效，换为style -->
+	<!-- 设置right正值失效，设置 left 负值 -->
+	<view :class="['uni-col']" :style="{
+		paddingLeft:`${Number(gutter)}rpx`,
+		paddingRight:`${Number(gutter)}rpx`,
+		width:`${nvueWidth}rpx`,
+		position:'relative',
+		marginLeft:`${marginLeft}rpx`,
+		left:`${right === 0 ? left : -right}rpx`
+	}">
+		<slot></slot>
+	</view>
+	<!-- #endif -->
+</template>
+
+<script>
+	/**
+	 * Col	布局-列
+	 * @description	搭配uni-row使用，构建布局。
+	 * @tutorial	https://ext.dcloud.net.cn/plugin?id=3958
+	 *
+	 * @property	{span} type = Number 栅格占据的列数
+	 * 						默认 24
+	 * @property	{offset} type = Number 栅格左侧的间隔格数
+	 * @property	{push} type = Number 栅格向右移动格数
+	 * @property	{pull} type = Number 栅格向左移动格数
+	 * @property	{xs} type = [Number, Object] <768px 响应式栅格数或者栅格属性对象
+	 * 						@description	Number时表示在此屏幕宽度下，栅格占据的列数。Object时可配置多个描述{span: 4, offset: 4}
+	 * @property	{sm} type = [Number, Object] ≥768px 响应式栅格数或者栅格属性对象
+	 * 						@description	Number时表示在此屏幕宽度下，栅格占据的列数。Object时可配置多个描述{span: 4, offset: 4}
+	 * @property	{md} type = [Number, Object] ≥992px 响应式栅格数或者栅格属性对象
+	 * 						@description	Number时表示在此屏幕宽度下，栅格占据的列数。Object时可配置多个描述{span: 4, offset: 4}
+	 * @property	{lg} type = [Number, Object] ≥1200px 响应式栅格数或者栅格属性对象
+	 * 						@description	Number时表示在此屏幕宽度下，栅格占据的列数。Object时可配置多个描述{span: 4, offset: 4}
+	 * @property	{xl} type = [Number, Object] ≥1920px 响应式栅格数或者栅格属性对象
+	 * 						@description	Number时表示在此屏幕宽度下，栅格占据的列数。Object时可配置多个描述{span: 4, offset: 4}
+	 */
+	const ComponentClass = 'uni-col';
+
+	// -1 默认值，因为在微信小程序端只给Number会有默认值0
+	export default {
+		name: 'uniCol',
+		// #ifdef MP-WEIXIN
+		options: {
+			virtualHost: true // 在微信小程序中将组件节点渲染为虚拟节点，更加接近Vue组件的表现
+		},
+		// #endif
+		props: {
+			span: {
+				type: Number,
+				default: 24
+			},
+			offset: {
+				type: Number,
+				default: -1
+			},
+			pull: {
+				type: Number,
+				default: -1
+			},
+			push: {
+				type: Number,
+				default: -1
+			},
+			xs: [Number, Object],
+			sm: [Number, Object],
+			md: [Number, Object],
+			lg: [Number, Object],
+			xl: [Number, Object]
+		},
+		data() {
+			return {
+				gutter: 0,
+				sizeClass: '',
+				parentWidth: 0,
+				nvueWidth: 0,
+				marginLeft: 0,
+				right: 0,
+				left: 0
+			}
+		},
+		created() {
+			// 字节小程序中，在computed中读取$parent为undefined
+			let parent = this.$parent;
+
+			while (parent && parent.$options.componentName !== 'uniRow') {
+				parent = parent.$parent;
+			}
+
+			this.updateGutter(parent.gutter)
+			parent.$watch('gutter', (gutter) => {
+				this.updateGutter(gutter)
+			})
+
+			// #ifdef APP-NVUE
+			this.updateNvueWidth(parent.width)
+			parent.$watch('width', (width) => {
+				this.updateNvueWidth(width)
+			})
+			// #endif
+		},
+		computed: {
+			sizeList() {
+				let {
+					span,
+					offset,
+					pull,
+					push
+				} = this;
+
+				return {
+					span,
+					offset,
+					pull,
+					push
+				}
+			},
+			// #ifndef APP-NVUE
+			pointClassList() {
+				let classList = [];
+
+				['xs', 'sm', 'md', 'lg', 'xl'].forEach(point => {
+					const props = this[point];
+					if (typeof props === 'number') {
+						classList.push(`${ComponentClass}-${point}-${props}`)
+					} else if (typeof props === 'object' && props) {
+						Object.keys(props).forEach(pointProp => {
+							classList.push(
+								pointProp === 'span' ?
+								`${ComponentClass}-${point}-${props[pointProp]}` :
+								`${ComponentClass}-${point}-${pointProp}-${props[pointProp]}`
+							)
+						})
+					}
+				});
+
+				// 支付宝小程序使用 :class=[ ['a','b'] ]，渲染错误
+				return classList.join(' ');
+			}
+			// #endif
+		},
+		methods: {
+			updateGutter(parentGutter) {
+				parentGutter = Number(parentGutter);
+				if (!isNaN(parentGutter)) {
+					this.gutter = parentGutter / 2
+				}
+			},
+			// #ifdef APP-NVUE
+			updateNvueWidth(width) {
+				// 用于在nvue端，span，offset，pull，push的计算
+				this.parentWidth = width;
+				['span', 'offset', 'pull', 'push'].forEach(size => {
+					const curSize = this[size];
+					if ((curSize || curSize === 0) && curSize !== -1) {
+						let RPX = 1 / 24 * curSize * width
+						RPX = Number(RPX);
+						switch (size) {
+							case 'span':
+								this.nvueWidth = RPX
+								break;
+							case 'offset':
+								this.marginLeft = RPX
+								break;
+							case 'pull':
+								this.right = RPX
+								break;
+							case 'push':
+								this.left = RPX
+								break;
+						}
+					}
+				});
+			}
+			// #endif
+		},
+		watch: {
+			sizeList: {
+				immediate: true,
+				handler(newVal) {
+					// #ifndef APP-NVUE
+					let classList = [];
+					for (let size in newVal) {
+						const curSize = newVal[size];
+						if ((curSize || curSize === 0) && curSize !== -1) {
+							classList.push(
+								size === 'span' ?
+								`${ComponentClass}-${curSize}` :
+								`${ComponentClass}-${size}-${curSize}`
+							)
+						}
+					}
+					// 支付宝小程序使用 :class=[ ['a','b'] ]，渲染错误
+					this.sizeClass = classList.join(' ');
+					// #endif
+					// #ifdef APP-NVUE
+					this.updateNvueWidth(this.parentWidth);
+					// #endif
+				}
+			}
+		}
+	}
+</script>
+
+<style lang='scss' scoped>
+	/* breakpoints */
+	$--sm: 768px !default;
+	$--md: 992px !default;
+	$--lg: 1200px !default;
+	$--xl: 1920px !default;
+
+	$breakpoints: ('xs' : (max-width: $--sm - 1),
+	'sm' : (min-width: $--sm),
+	'md' : (min-width: $--md),
+	'lg' : (min-width: $--lg),
+	'xl' : (min-width: $--xl));
+
+	$layout-namespace: ".uni-";
+	$col: $layout-namespace+"col";
+
+	@function getSize($size) {
+		/* TODO 1/24 * $size * 100 * 1%; 使用计算后的值，为了解决 vue3 控制台报错 */
+		@return 0.04166666666 * $size * 100 * 1%;
+	}
+
+	@mixin res($key, $map:$breakpoints) {
+		@if map-has-key($map, $key) {
+			@media screen and #{inspect(map-get($map,$key))} {
+				@content;
+			}
+		}
+
+		@else {
+			@warn "Undeinfed point: `#{$key}`";
+		}
+	}
+
+	/* #ifndef APP-NVUE */
+	#{$col} {
+		float: left;
+		box-sizing: border-box;
+	}
+
+	#{$col}-0 {
+		/* #ifdef APP-NVUE */
+		width: 0;
+		height: 0;
+		margin-top: 0;
+		margin-right: 0;
+		margin-bottom: 0;
+		margin-left: 0;
+		/* #endif */
+		/* #ifndef APP-NVUE */
+		display: none;
+		/* #endif */
+	}
+
+	@for $i from 0 through 24 {
+		#{$col}-#{$i} {
+			width: getSize($i);
+		}
+
+		#{$col}-offset-#{$i} {
+			margin-left: getSize($i);
+		}
+
+		#{$col}-pull-#{$i} {
+			position: relative;
+			right: getSize($i);
+		}
+
+		#{$col}-push-#{$i} {
+			position: relative;
+			left: getSize($i);
+		}
+	}
+
+	@each $point in map-keys($breakpoints) {
+		@include res($point) {
+			#{$col}-#{$point}-0 {
+				display: none;
+			}
+
+			@for $i from 0 through 24 {
+				#{$col}-#{$point}-#{$i} {
+					width: getSize($i);
+				}
+
+				#{$col}-#{$point}-offset-#{$i} {
+					margin-left: getSize($i);
+				}
+
+				#{$col}-#{$point}-pull-#{$i} {
+					position: relative;
+					right: getSize($i);
+				}
+
+				#{$col}-#{$point}-push-#{$i} {
+					position: relative;
+					left: getSize($i);
+				}
+			}
+		}
+	}
+
+	/* #endif */
+</style>

src/components/uni-row/uni-row.vue

@@ -0,0 +1,190 @@
+<template>
+	<view :class="[ 'uni-row', typeClass , justifyClass, alignClass, ]" :style="{
+		marginLeft:`${Number(marginValue)}rpx`,
+		marginRight:`${Number(marginValue)}rpx`,
+	}">
+		<slot></slot>
+	</view>
+</template>
+
+<script>
+	const ComponentClass = 'uni-row';
+	const modifierSeparator = '--';
+	/**
+	 * Row	布局-行
+	 * @description	流式栅格系统，随着屏幕或视口分为 24 份，可以迅速简便地创建布局。
+	 * @tutorial	https://ext.dcloud.net.cn/plugin?id=3958
+	 *
+	 * @property	{gutter} type = Number 栅格间隔
+	 * @property	{justify} type = String flex 布局下的水平排列方式
+	 * 						可选	start/end/center/space-around/space-between	start
+	 * 						默认值	start
+	 * @property	{align} type = String flex 布局下的垂直排列方式
+	 * 						可选	top/middle/bottom
+	 * 						默认值	top
+	 * @property	{width} type = String|Number nvue下需要自行配置宽度用于计算
+	 * 						默认值 750
+	 */
+
+
+	export default {
+		name: 'uniRow',
+		componentName: 'uniRow',
+		// #ifdef MP-WEIXIN
+		options: {
+			virtualHost: true // 在微信小程序中将组件节点渲染为虚拟节点，更加接近Vue组件的表现，可使用flex布局
+		},
+		// #endif
+		props: {
+			type: String,
+			gutter: Number,
+			justify: {
+				type: String,
+				default: 'start'
+			},
+			align: {
+				type: String,
+				default: 'top'
+			},
+			// nvue如果使用span等属性，需要配置宽度
+			width: {
+				type: [String, Number],
+				default: 750
+			}
+		},
+		created() {
+			// #ifdef APP-NVUE
+			this.type = 'flex';
+			// #endif
+		},
+		computed: {
+			marginValue() {
+				// #ifndef APP-NVUE
+				if (this.gutter) {
+					return -(this.gutter / 2);
+				}
+				// #endif
+				return 0;
+			},
+			typeClass() {
+				return this.type === 'flex' ? `${ComponentClass + modifierSeparator}flex` : '';
+			},
+			justifyClass() {
+				return this.justify !== 'start' ? `${ComponentClass + modifierSeparator}flex-justify-${this.justify}` : ''
+			},
+			alignClass() {
+				return this.align !== 'top' ? `${ComponentClass + modifierSeparator}flex-align-${this.align}` : ''
+			}
+		}
+	};
+</script>
+
+<style lang="scss">
+	$layout-namespace: ".uni-";
+	$row:$layout-namespace+"row";
+	$modifier-separator: "--";
+
+	@mixin utils-clearfix {
+		$selector: &;
+
+		@at-root {
+
+			/* #ifndef APP-NVUE */
+			#{$selector}::before,
+			#{$selector}::after {
+				display: table;
+				content: "";
+			}
+
+			#{$selector}::after {
+				clear: both;
+			}
+
+			/* #endif */
+		}
+
+	}
+
+	@mixin utils-flex ($direction: row) {
+		/* #ifndef APP-NVUE */
+		display: flex;
+		/* #endif */
+		flex-direction: $direction;
+	}
+
+	@mixin set-flex($state) {
+		@at-root &-#{$state} {
+			@content
+		}
+	}
+
+	#{$row} {
+		position: relative;
+		flex-direction: row;
+
+		/* #ifdef APP-NVUE */
+		flex: 1;
+		/* #endif */
+
+		/* #ifndef APP-NVUE */
+		box-sizing: border-box;
+		/* #endif */
+
+		// 非nvue使用float布局
+		@include utils-clearfix;
+
+		// 在QQ、字节、百度小程序平台，编译后使用shadow dom，不可使用flex布局，使用float
+		@at-root {
+
+			/* #ifndef MP-QQ || MP-TOUTIAO || MP-BAIDU */
+			&#{$modifier-separator}flex {
+				@include utils-flex;
+				flex-wrap: wrap;
+				flex: 1;
+
+				&:before,
+				&:after {
+					/* #ifndef APP-NVUE */
+					display: none;
+					/* #endif */
+				}
+
+				@include set-flex(justify-center) {
+					justify-content: center;
+				}
+
+				@include set-flex(justify-end) {
+					justify-content: flex-end;
+				}
+
+				@include set-flex(justify-space-between) {
+					justify-content: space-between;
+				}
+
+				@include set-flex(justify-space-around) {
+					justify-content: space-around;
+				}
+
+				@include set-flex(align-middle) {
+					align-items: center;
+				}
+
+				@include set-flex(align-bottom) {
+					align-items: flex-end;
+				}
+			}
+
+			/* #endif */
+		}
+
+	}
+
+	// 字节、QQ配置后不生效
+	// 此处用法无法使用scoped
+	/* #ifdef MP-WEIXIN || MP-TOUTIAO || MP-QQ */
+	:host {
+		display: block;
+	}
+
+	/* #endif */
+</style>