useMouse

分类

传感器

导出大小

1.08 kB

上次更改

8 个月前

响应式鼠标位置

演示

源代码演练场 (beta)

基本用法

x: 0
y: 0
sourceType: null

提取器用法

x: 0
y: 0
sourceType: null

基本用法

import { useMouse
 } from '@vueuse/core'

const { x
, y
, sourceType
 } = useMouse
()

默认启用触控。要只检测鼠标变化，请将 touch 设置为 false。dragover 事件用于在拖动时跟踪鼠标位置。

const { x
, y
 } = useMouse
({ touch
: false })

自定义提取器

也可以提供一个自定义提取器函数来从事件中获取位置。

TypeScript

import type { UseMouseEventExtractor
 } from '@vueuse/core'
import { useMouse
, useParentElement
 } from '@vueuse/core'

const parentEl
 = useParentElement
()

const extractor
: UseMouseEventExtractor
 = event
 => (
  event
 instanceof MouseEvent

    ? [event
.offsetX
, event
.offsetY
]
    : null
)

const { x
, y
, sourceType
 } = useMouse
({ target
: parentEl
, type
: extractor
 })

import { useMouse, useParentElement } from '@vueuse/core'
const parentEl = useParentElement()
const extractor = (event) =>
  event instanceof MouseEvent ? [event.offsetX, event.offsetY] : null
const { x, y, sourceType } = useMouse({ target: parentEl, type: extractor })

组件用法

此函数还通过 @vueuse/components 包提供了一个无渲染组件版本。了解更多用法。

vue

<template>
  <UseMouse v-slot="{ x
, y
 }">
    x: {{ x
 }}
    y: {{ y
 }}
  </UseMouse>
</template>

类型声明

显示类型声明

export type UseMouseCoordType
 = "page" | "client" | "screen" | "movement"
export type UseMouseSourceType
 = "mouse" | "touch" | null
export type UseMouseEventExtractor
 = (
  event
: MouseEvent | Touch,
) => [x
: number, y
: number] | null | undefined
export interface UseMouseOptions
  extends ConfigurableWindow,
    ConfigurableEventFilter {
  /**
   * Mouse position based by page, client, screen, or relative to previous position
   *
   * @default 'page'
   */
  type
?: UseMouseCoordType
 | UseMouseEventExtractor

  /**
   * Listen events on `target` element
   *
   * @default 'Window'
   */
  target
?: MaybeRefOrGetter
<Window | EventTarget | null | undefined>
  /**
   * Listen to `touchmove` events
   *
   * @default true
   */
  touch
?: boolean
  /**
   * Listen to `scroll` events on window, only effective on type `page`
   *
   * @default true
   */
  scroll
?: boolean
  /**
   * Reset to initial value when `touchend` event fired
   *
   * @default false
   */
  resetOnTouchEnds
?: boolean
  /**
   * Initial values
   */
  initialValue
?: Position

}
/**
 * Reactive mouse position.
 *
 * @see https://vueuse.org.cn/useMouse
 * @param options
 */
export declare function useMouse
(options
?: UseMouseOptions): {
  x
: ShallowRef
<number, number>
  y
: ShallowRef
<number, number>
  sourceType
: ShallowRef
<UseMouseSourceType
, UseMouseSourceType
>
}
export type UseMouseReturn
 = ReturnType
<typeof useMouse
>