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<template>
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<view
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class="u-line"
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:style="[lineStyle]"
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>
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</view>
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</template>
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<script>
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import { props } from './props';
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import { mpMixin } from '../../libs/mixin/mpMixin';
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import { mixin } from '../../libs/mixin/mixin';
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import { addUnit, addStyle, deepMerge } from '../../libs/function/index';
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/**
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* line 线条
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* @description 此组件一般用于显示一根线条，用于分隔内容块，有横向和竖向两种模式，且能设置0.5px线条，使用也很简单
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* @tutorial https://ijry.github.io/uview-plus/components/line.html
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* @property {String} color 线条的颜色 ( 默认 '#d6d7d9' )
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* @property {String | Number} length 长度，竖向时表现为高度，横向时表现为长度，可以为百分比，带px单位的值等 ( 默认 '100%' )
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* @property {String} direction 线条的方向，row-横向，col-竖向 (默认 'row' )
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* @property {Boolean} hairline 是否显示细线条 (默认 true )
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* @property {String | Number} margin 线条与上下左右元素的间距，字符串形式，如"30px" (默认 0 )
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* @property {Boolean} dashed 是否虚线，true-虚线，false-实线 (默认 false )
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* @property {Object} customStyle 定义需要用到的外部样式
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* @example <u-line color="red"></u-line>
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*/
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export default {
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name: 'u-line',
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mixins: [mpMixin, mixin, props],
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computed: {
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lineStyle() {
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const style = {}
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style.margin = this.margin
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// 如果是水平线条，边框高度为1px，再通过transform缩小一半，就是0.5px了
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if (this.direction === 'row') {
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// 此处采用兼容分开写，兼容nvue的写法
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style.borderBottomWidth = '1px'
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style.borderBottomStyle = this.dashed ? 'dashed' : 'solid'
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style.width = addUnit(this.length)
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if (this.hairline) style.transform = 'scaleY(0.5)'
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} else {
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// 如果是竖向线条，边框宽度为1px，再通过transform缩小一半，就是0.5px了
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style.borderLeftWidth = '1px'
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style.borderLeftStyle = this.dashed ? 'dashed' : 'solid'
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style.height = addUnit(this.length)
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if (this.hairline) style.transform = 'scaleX(0.5)'
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}
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style.borderColor = this.color
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return deepMerge(style, addStyle(this.customStyle))
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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.u-line {
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/* #ifndef APP-NVUE */
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vertical-align: middle;
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/* #endif */
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}
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</style>
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