使用ScrollShadow

一个可组合的应用滚动阴影效果的任何滚动元素。

用法

使用自动导入的useScrollShadow组合件在可滚动元素的边缘应用淡入淡出阴影,指示滚动方向上有更多内容可用。

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.

<script setup lang="ts">
const el = useTemplateRef('el')

const { style } = useScrollShadow(el)
</script>

<template>
  <div class="max-w-sm bg-elevated/50 rounded-lg">
    <div
      ref="el"
      :style="style"
      class="h-72 p-4 space-y-4 overflow-y-auto"
    >
      <p v-for="i in 6" :key="i">
        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.
      </p>
    </div>
  </div>
</template>
<script setup lang="ts">
import { useTemplateRef } from 'vue'

const el = useTemplateRef('el')

const { style } = useScrollShadow(el)
</script>

<template>
  <div class="max-w-sm bg-elevated/50 rounded-lg">
    <div
      ref="el"
      :style="style"
      class="h-72 p-4 space-y-4 overflow-y-auto"
    >
      <p v-for="i in 6" :key="i">
        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam pulvinar risus non risus hendrerit venenatis. Pellentesque sit amet hendrerit risus, sed porttitor quam. Morbi accumsan cursus enim, sed ultricies sapien.
      </p>
    </div>
  </div>
</template>
  • 使用CSS mask-image在边缘淡化内容而不是覆盖元素,因此它适用于任何背景。
  • 自动检测元素是否溢出,仅在需要时应用阴影。
  • 支持垂直和水平方向。

API

useScrollShadow(element, options?)

参数

element
MaybeRef<HTMLElement | null | undefined> required
对可滚动元素的模板引用或反应性引用。
options
UseScrollShadowOptions
滚动阴影的配置选项。

返回

style
ComputedRef<CSSProperties | undefined>
使用:style绑定到可滚动元素上的反应式对象。当阴影活动时包含maskImage,否则包含undefined。
isOverflowing
ComputedRef<boolean>
元素的内容是否溢出其可见区域。
arrivedState
{ top: boolean, bottom: boolean, left: boolean, right: boolean }
来自useScroll的被动滚动到达状态。

示例

水平

使用orientation选项用于水平滚动容器:

<script setup lang="ts">
const el = useTemplateRef('el')

const { style } = useScrollShadow(el, { orientation: 'horizontal' })
</script>

<template>
  <div ref="el" class="overflow-x-auto whitespace-nowrap" :style="style">
    <!-- Horizontally scrollable content -->
  </div>
</template>

自定义尺寸

使用size选项更改阴影大小(以像素为单位):

<script setup lang="ts">
const el = useTemplateRef('el')

const { style } = useScrollShadow(el, { size: 48 })
</script>

<template>
  <div ref="el" class="max-h-[300px] overflow-y-auto" :style="style">
    <!-- Scrollable content -->
  </div>
</template>