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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | 3x 3x 3x 3x 3x 3x 3x 3x 2x 1x 1x 3x 2x 1x 1x 3x 1x 1x 1x 1x 3x 1x 1x 1x 1x 3x 1x 1x 3x | import { useCallback, useRef, useState } from 'react'
import { useLatest, useUnmount } from 'react-use'
export interface UseHoverOptions {
/**
* 悬停开始后多久开启悬停态，单位为毫秒。
*
* @default 50
*/
hoverStartDelay?: number
/**
* 悬停结束后多久关闭悬停态，单位为毫秒。
*
* @default 400
*/
hoverEndDelay?: number
}
export interface UseHoverResult {
/**
* 当前的悬停态。
*/
hovering: boolean
/**
* 开始悬停。
*/
startHover: () => any
/**
* 结束悬停。
*/
endHover: () => any
}
export function useHover(options: UseHoverOptions = {}): UseHoverResult {
const { hoverStartDelay = 50, hoverEndDelay = 400 } = options
const [hovering, setHovering] = useState(false)
const latestHoverStartDelay = useLatest(hoverStartDelay)
const latestHoverEndDelay = useLatest(hoverEndDelay)
const latestHovering = useLatest(hovering)
const hoverStartTimer = useRef<any>()
const hoverEndTimer = useRef<any>()
const clearHoverStartTimer = useCallback(() => {
if (hoverStartTimer.current) {
clearTimeout(hoverStartTimer.current)
hoverStartTimer.current = undefined
}
}, [])
const clearHoverEndTimer = useCallback(() => {
if (hoverEndTimer.current) {
clearTimeout(hoverEndTimer.current)
hoverEndTimer.current = undefined
}
}, [])
const startHover = useCallback(() => {
if (!latestHovering.current) {
clearHoverStartTimer()
hoverStartTimer.current = setTimeout(() => {
setHovering(true)
}, latestHoverStartDelay.current)
}
}, [])
const endHover = useCallback(() => {
if (latestHovering.current) {
clearHoverEndTimer()
hoverEndTimer.current = setTimeout(() => {
setHovering(false)
}, latestHoverEndDelay.current)
} else E{
clearHoverStartTimer()
}
}, [])
useUnmount(() => {
clearHoverStartTimer()
clearHoverEndTimer()
})
return {
hovering,
startHover,
endHover,
}
}
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