You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
210 lines
6.2 KiB
210 lines
6.2 KiB
2 years ago
|
<template>
|
||
|
|
<!-- #ifndef APP-NVUE -->
|
||
|
|
<view
|
||
|
|
class="u-grid-item"
|
||
|
|
hover-class="u-grid-item--hover-class"
|
||
|
|
:hover-stay-time="200"
|
||
|
|
@tap="clickHandler"
|
||
|
|
:class="classes"
|
||
|
|
:style="[itemStyle]"
|
||
|
|
>
|
||
|
|
<slot />
|
||
|
|
</view>
|
||
|
|
<!-- #endif -->
|
||
|
|
<!-- #ifdef APP-NVUE -->
|
||
|
|
<view
|
||
|
|
class="u-grid-item"
|
||
|
|
:hover-stay-time="200"
|
||
|
|
@tap="clickHandler"
|
||
|
|
:class="classes"
|
||
|
|
:style="[itemStyle]"
|
||
|
|
>
|
||
|
|
<slot />
|
||
|
|
</view>
|
||
|
|
<!-- #endif -->
|
||
|
|
</template>
|
||
|
|
|
||
|
|
<script>
|
||
|
|
import props from './props.js';
|
||
|
|
/**
|
||
|
|
* gridItem 提示
|
||
|
|
* @description 宫格组件一般用于同时展示多个同类项目的场景，可以给宫格的项目设置徽标组件(badge)，或者图标等，也可以扩展为左右滑动的轮播形式。搭配u-grid使用
|
||
|
|
* @tutorial https://www.uviewui.com/components/grid.html
|
||
|
|
* @property {String | Number} name 宫格的name ( 默认 null )
|
||
|
|
* @property {String} bgColor 宫格的背景颜色 （默认 'transparent' ）
|
||
|
|
* @property {Object} customStyle 自定义样式，对象形式
|
||
|
|
* @event {Function} click 点击宫格触发
|
||
|
|
* @example <u-grid-item></u-grid-item>
|
||
|
|
*/
|
||
|
|
export default {
|
||
|
|
name: "u-grid-item",
|
||
|
|
mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
|
||
|
|
data() {
|
||
|
|
return {
|
||
|
|
parentData: {
|
||
|
|
col: 3, // 父组件划分的宫格数
|
||
|
|
border: true, // 是否显示边框，根据父组件决定
|
||
|
|
},
|
||
|
|
// #ifdef APP-NVUE
|
||
|
|
width: 0, // nvue下才这么计算，vue下放到computed中，否则会因为延时造成闪烁
|
||
|
|
// #endif
|
||
|
|
classes: [], // 类名集合，用于判断是否显示右边和下边框
|
||
|
|
};
|
||
|
|
},
|
||
|
|
mounted() {
|
||
|
|
this.init()
|
||
|
|
},
|
||
|
|
computed: {
|
||
|
|
// #ifndef APP-NVUE
|
||
|
|
// vue下放到computed中，否则会因为延时造成闪烁
|
||
|
|
width() {
|
||
|
|
return 100 / Number(this.parentData.col) + '%'
|
||
|
|
},
|
||
|
|
// #endif
|
||
|
|
itemStyle() {
|
||
|
|
const style = {
|
||
|
|
background: this.bgColor,
|
||
|
|
width: this.width
|
||
|
|
}
|
||
|
|
return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
|
||
|
|
}
|
||
|
|
},
|
||
|
|
methods: {
|
||
|
|
init() {
|
||
|
|
// 用于在父组件u-grid的children中被添加入子组件时，
|
||
|
|
// 重新计算item的边框
|
||
|
|
uni.$on('$uGridItem', () => {
|
||
|
|
this.gridItemClasses()
|
||
|
|
})
|
||
|
|
// 父组件的实例
|
||
|
|
this.updateParentData()
|
||
|
|
// #ifdef APP-NVUE
|
||
|
|
// 获取元素该有的长度，nvue下要延时才准确
|
||
|
|
this.$nextTick(function(){
|
||
|
|
this.getItemWidth()
|
||
|
|
})
|
||
|
|
// #endif
|
||
|
|
// 发出事件，通知所有的grid-item都重新计算自己的边框
|
||
|
|
uni.$emit('$uGridItem')
|
||
|
|
this.gridItemClasses()
|
||
|
|
},
|
||
|
|
// 获取父组件的参数
|
||
|
|
updateParentData() {
|
||
|
|
// 此方法写在mixin中
|
||
|
|
this.getParentData('u-grid');
|
||
|
|
},
|
||
|
|
clickHandler() {
|
||
|
|
let name = this.name
|
||
|
|
// 如果没有设置name属性，历遍父组件的children数组，判断当前的元素是否和本实例this相等，找出当前组件的索引
|
||
|
|
const children = this.parent?.children
|
||
|
|
if(children && this.name === null) {
|
||
|
|
name = children.findIndex(child => child === this)
|
||
|
|
}
|
||
|
|
// 调用父组件方法，发出事件
|
||
|
|
this.parent && this.parent.childClick(name)
|
||
|
|
this.$emit('click', name)
|
||
|
|
},
|
||
|
|
async getItemWidth() {
|
||
|
|
// 如果是nvue，不能使用百分比，只能使用固定宽度
|
||
|
|
let width = 0
|
||
|
|
if(this.parent) {
|
||
|
|
// 获取父组件宽度后，除以栅格数，得出每个item的宽度
|
||
|
|
const parentWidth = await this.getParentWidth()
|
||
|
|
width = parentWidth / Number(this.parentData.col) + 'px'
|
||
|
|
}
|
||
|
|
this.width = width
|
||
|
|
},
|
||
|
|
// 获取父元素的尺寸
|
||
|
|
getParentWidth() {
|
||
|
|
// #ifdef APP-NVUE
|
||
|
|
// 返回一个promise，让调用者可以用await同步获取
|
||
|
|
const dom = uni.requireNativePlugin('dom')
|
||
|
|
return new Promise(resolve => {
|
||
|
|
// 调用父组件的ref
|
||
|
|
dom.getComponentRect(this.parent.$refs['u-grid'], res => {
|
||
|
|
resolve(res.size.width)
|
||
|
|
})
|
||
|
|
})
|
||
|
|
// #endif
|
||
|
|
},
|
||
|
|
gridItemClasses() {
|
||
|
|
if(this.parentData.border) {
|
||
|
|
const classes = []
|
||
|
|
this.parent.children.map((child, index) =>{
|
||
|
|
if(this === child) {
|
||
|
|
const len = this.parent.children.length
|
||
|
|
// 贴近右边屏幕边沿的child，并且最后一个（比如只有横向2个的时候），无需右边框
|
||
|
|
if((index + 1) % this.parentData.col !== 0 && index + 1 !== len) {
|
||
|
|
classes.push('u-border-right')
|
||
|
|
}
|
||
|
|
// 总的宫格数量对列数取余的值
|
||
|
|
// 如果取余后，值为0，则意味着要将最后一排的宫格，都不需要下边框
|
||
|
|
const lessNum = len % this.parentData.col === 0 ? this.parentData.col : len % this.parentData.col
|
||
|
|
// 最下面的一排child，无需下边框
|
||
|
|
if(index < len - lessNum) {
|
||
|
|
classes.push('u-border-bottom')
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
// 支付宝，头条小程序无法动态绑定一个数组类名，否则解析出来的结果会带有","，而导致失效
|
||
|
|
// #ifdef MP-ALIPAY || MP-TOUTIAO
|
||
|
|
classes = classes.join(' ')
|
||
|
|
// #endif
|
||
|
|
this.classes = classes
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
beforeDestroy() {
|
||
|
|
// 移除事件监听，释放性能
|
||
|
|
uni.$off('$uGridItem')
|
||
|
|
}
|
||
|
|
};
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<style lang="scss" scoped>
|
||
|
|
@import "../../libs/css/components.scss";
|
||
|
|
$u-grid-item-hover-class-opcatiy:.5 !default;
|
||
|
|
$u-grid-item-margin-top:1rpx !default;
|
||
|
|
$u-grid-item-border-right-width:0.5px !default;
|
||
|
|
$u-grid-item-border-bottom-width:0.5px !default;
|
||
|
|
$u-grid-item-border-right-color:$u-border-color !default;
|
||
|
|
$u-grid-item-border-bottom-color:$u-border-color !default;
|
||
|
|
.u-grid-item {
|
||
|
|
align-items: center;
|
||
|
|
justify-content: center;
|
||
|
|
position: relative;
|
||
|
|
flex-direction: column;
|
||
|
|
/* #ifndef APP-NVUE */
|
||
|
|
box-sizing: border-box;
|
||
|
|
display: flex;
|
||
|
|
/* #endif */
|
||
|
|
|
||
|
|
/* #ifdef MP */
|
||
|
|
position: relative;
|
||
|
|
float: left;
|
||
|
|
/* #endif */
|
||
|
|
|
||
|
|
/* #ifdef MP-WEIXIN */
|
||
|
|
margin-top:$u-grid-item-margin-top;
|
||
|
|
/* #endif */
|
||
|
|
|
||
|
|
&--hover-class {
|
||
|
|
opacity:$u-grid-item-hover-class-opcatiy;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* #ifdef APP-NVUE */
|
||
|
|
// 由于nvue不支持组件内引入app.vue中再引入的样式，所以需要写在这里
|
||
|
|
.u-border-right {
|
||
|
|
border-right-width:$u-grid-item-border-right-width;
|
||
|
|
border-color: $u-grid-item-border-right-color;
|
||
|
|
}
|
||
|
|
|
||
|
|
.u-border-bottom {
|
||
|
|
border-bottom-width:$u-grid-item-border-bottom-width;
|
||
|
|
border-color:$u-grid-item-border-bottom-color;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* #endif */
|
||
|
|
</style>
|