dykj-outsource-12123/uni_modules/uview-plus/components/u-scroll-list/u-scroll-list.vue
2024-06-28 14:18:30 +08:00

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<template>
<view
class="u-scroll-list"
ref="u-scroll-list"
>
<!-- #ifdef APP-NVUE -->
<!-- nvue使用bindingX实现以得到更好的性能 -->
<scroller
class="u-scroll-list__scroll-view"
ref="u-scroll-list__scroll-view"
scroll-direction="horizontal"
:show-scrollbar="false"
:offset-accuracy="1"
@scroll="nvueScrollHandler"
>
<view class="u-scroll-list__scroll-view__content">
<slot />
</view>
</scroller>
<!-- #endif -->
<!-- #ifndef APP-NVUE -->
<!-- #ifdef MP-WEIXIN || APP-VUE || H5 || MP-QQ -->
<!-- 以上平台支持wxs -->
<scroll-view
class="u-scroll-list__scroll-view"
scroll-x
@scroll="wxs.scroll"
@scrolltoupper="wxs.scrolltoupper"
@scrolltolower="wxs.scrolltolower"
:data-scrollWidth="scrollWidth"
:data-barWidth="getPx(indicatorBarWidth)"
:data-indicatorWidth="getPx(indicatorWidth)"
:show-scrollbar="false"
:upper-threshold="0"
:lower-threshold="0"
>
<!-- #endif -->
<!-- #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ -->
<!-- 非以上平台只能使用普通js实现 -->
<scroll-view
class="u-scroll-list__scroll-view"
scroll-x
@scroll="scrollHandler"
@scrolltoupper="scrolltoupperHandler"
@scrolltolower="scrolltolowerHandler"
:show-scrollbar="false"
:upper-threshold="0"
:lower-threshold="0"
>
<!-- #endif -->
<view class="u-scroll-list__scroll-view__content">
<slot />
</view>
</scroll-view>
<!-- #endif -->
<view
class="u-scroll-list__indicator"
v-if="indicator"
:style="[addStyle(indicatorStyle)]"
>
<view
class="u-scroll-list__indicator__line"
:style="[lineStyle]"
>
<view
class="u-scroll-list__indicator__line__bar"
:style="[barStyle]"
ref="u-scroll-list__indicator__line__bar"
></view>
</view>
</view>
</view>
</template>
<script
src="./scrollWxs.wxs"
module="wxs"
lang="wxs"
></script>
<script>
/**
* scrollList 横向滚动列表
* @description 该组件一般用于同时展示多个商品、分类的场景,也可以完成左右滑动的列表。
* @tutorial https://ijry.github.io/uview-plus/components/scrollList.html
* @property {String | Number} indicatorWidth 指示器的整体宽度 (默认 50 )
* @property {String | Number} indicatorBarWidth 滑块的宽度 (默认 20 )
* @property {Boolean} indicator 是否显示面板指示器 (默认 true )
* @property {String} indicatorColor 指示器非激活颜色 (默认 '#f2f2f2' )
* @property {String} indicatorActiveColor 指示器的激活颜色 (默认 '#3c9cff' )
* @property {String | Object} indicatorStyle 指示器样式可通过bottomleftright进行定位
* @event {Function} left 滑动到左边时触发
* @event {Function} right 滑动到右边时触发
* @example
*/
// #ifdef APP-NVUE
const dom = uni.requireNativePlugin('dom')
import nvueMixin from "./nvue.js"
// #endif
import props from './props';
import mpMixin from '../../libs/mixin/mpMixin';
import mixin from '../../libs/mixin/mixin';
import { addStyle, addUnit, getPx, sleep } from '../../libs/function/index';
export default {
name: 'u-scroll-list',
// #ifndef APP-NVUE
mixins: [mpMixin, mixin, props],
// #endif
// #ifdef APP-NVUE
mixins: [mpMixin, mixin, nvueMixin, props],
// #endif
data() {
return {
scrollInfo: {
scrollLeft: 0,
scrollWidth: 0
},
scrollWidth: 0
}
},
computed: {
// 指示器为线型的样式
barStyle() {
const style = {}
// #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ
// 此为普通js方案只有在非nvue和不支持wxs方案的端才使用、
// 此处的计算理由为scroll-view的滚动距离与目标滚动距离(scroll-view的实际宽度减去包裹元素的宽度)之比,等于滑块当前移动距离与总需
// 滑动距离(指示器的总宽度减去滑块宽度)的比值
const scrollLeft = this.scrollInfo.scrollLeft,
scrollWidth = this.scrollInfo.scrollWidth,
barAllMoveWidth = this.indicatorWidth - this.indicatorBarWidth
const x = scrollLeft / (scrollWidth - this.scrollWidth) * barAllMoveWidth
style.transform = `translateX(${ x }px)`
// #endif
// 设置滑块的宽度和背景色,是每个平台都需要的
style.width = addUnit(this.indicatorBarWidth)
style.backgroundColor = this.indicatorActiveColor
return style
},
lineStyle() {
const style = {}
// 指示器整体的样式,需要设置其宽度和背景色
style.width = addUnit(this.indicatorWidth)
style.backgroundColor = this.indicatorColor
return style
}
},
mounted() {
this.init()
},
emits: ["left", "right"],
methods: {
addStyle,
getPx,
init() {
this.getComponentWidth()
},
// #ifndef APP-NVUE || MP-WEIXIN || H5 || APP-VUE || MP-QQ
// scroll-view触发滚动事件
scrollHandler(e) {
this.scrollInfo = e.detail
},
scrolltoupperHandler() {
this.scrollEvent('left')
this.scrollInfo.scrollLeft = 0
},
scrolltolowerHandler() {
this.scrollEvent('right')
// 在普通js方案中滚动到右边时通过设置this.scrollInfo模拟出滚动到右边的情况
// 因为上方是用过computed计算的设置后会自动调整滑块的位置
this.scrollInfo.scrollLeft = getPx(this.indicatorWidth) - getPx(this.indicatorBarWidth)
},
// #endif
//
scrollEvent(status) {
this.$emit(status)
},
// 获取组件的宽度
async getComponentWidth() {
// 延时一定时间以获取dom尺寸
await sleep(30)
// #ifndef APP-NVUE
this.$uGetRect('.u-scroll-list').then(size => {
this.scrollWidth = size.width
})
// #endif
// #ifdef APP-NVUE
const ref = this.$refs['u-scroll-list']
ref && dom.getComponentRect(ref, (res) => {
this.scrollWidth = res.size.width
})
// #endif
},
}
}
</script>
<style lang="scss" scoped>
@import "../../libs/css/components.scss";
.u-scroll-list {
padding-bottom: 10px;
&__scroll-view {
@include flex;
&__content {
@include flex;
}
}
&__indicator {
@include flex;
justify-content: center;
margin-top: 15px;
&__line {
width: 60px;
height: 4px;
border-radius: 100px;
overflow: hidden;
&__bar {
width: 20px;
height: 4px;
border-radius: 100px;
}
}
}
}
</style>