u-row.vue
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<template>
<view
class="u-row"
ref="u-row"
:style="[rowStyle]"
@tap="clickHandler"
>
<slot />
</view>
</template>
<script>
// #ifdef APP-NVUE
const dom = uni.requireNativePlugin('dom')
// #endif
import props from './props.js';
/**
* Row 栅格系统中的行
* @description 通过基础的 12 分栏，迅速简便地创建布局
* @tutorial https://www.uviewui.com/components/layout.html
* @property {String | Number} gutter 栅格间隔，左右各为此值的一半，单位px (默认 0 )
* @property {String} justify 水平排列方式(微信小程序暂不支持) 可选值为`start`(或`flex-start`)、`end`(或`flex-end`)、`center`、`around`(或`space-around`)、`between`(或`space-between`) (默认 'start' )
* @property {String} align 垂直排列方式 (默认 'center' )
* @property {Object} customStyle 定义需要用到的外部样式
*
* @event {Function} click row被点击
* @example <u-row justify="space-between" customStyle="margin-bottom: 10px"></u-row>
*/
export default {
name: "u-row",
mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
data() {
return {
}
},
computed: {
uJustify() {
if (this.justify == 'end' || this.justify == 'start') return 'flex-' + this.justify
else if (this.justify == 'around' || this.justify == 'between') return 'space-' + this.justify
else return this.justify
},
uAlignItem() {
if (this.align == 'top') return 'flex-start'
if (this.align == 'bottom') return 'flex-end'
else return this.align
},
rowStyle() {
const style = {
alignItems: this.uAlignItem,
justifyContent: this.uJustify
}
// 通过给u-row左右两边的负外边距，消除u-col在有gutter时，第一个和最后一个元素的左内边距和右内边距造成的影响
if(this.gutter) {
style.marginLeft = uni.$u.addUnit(-Number(this.gutter)/2)
style.marginRight = uni.$u.addUnit(-Number(this.gutter)/2)
}
return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
}
},
methods: {
clickHandler(e) {
this.$emit('click')
},
async getComponentWidth() {
// 延时一定时间，以确保节点渲染完成
await uni.$u.sleep()
return new Promise(resolve => {
// uView封装的获取节点的方法，详见文档
// #ifndef APP-NVUE
this.$uGetRect('.u-row').then(res => {
resolve(res.width)
})
// #endif
// #ifdef APP-NVUE
// nvue的dom模块用于获取节点
dom.getComponentRect(this.$refs['u-row'], (res) => {
resolve(res.size.width)
})
// #endif
})
},
}
}
</script>
<style lang="scss" scoped>
@import "../../libs/css/components.scss";
.u-row {
@include flex;
}
</style>