#

whycq

2023-10-13 c64064285bc6df2d5b82f3995bb9e56398cacd73

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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>