77 lines
2.0 KiB
TypeScript
77 lines
2.0 KiB
TypeScript
|
import type { PermissiveMotionProperties } from '@vueuse/motion'
|
||
|
|
import type { Handlers } from '@vueuse/gesture'
|
||
|
|
import { useMotionProperties, useSpring } from '@vueuse/motion'
|
||
|
|
import { useGesture } from '@vueuse/gesture'
|
||
|
|
import type { MaybeRef } from '@vueuse/core'
|
||
|
|
|
||
|
|
export interface CarouselOptions {
|
||
|
|
hasNext: MaybeRef<boolean>
|
||
|
|
hasPrev: MaybeRef<boolean>
|
||
|
|
onPrev: () => void
|
||
|
|
onNext: () => void
|
||
|
|
}
|
||
|
|
|
||
|
|
export const useImageGesture = (
|
||
|
|
domTarget: MaybeRef<HTMLElement>,
|
||
|
|
carouselOptions?: CarouselOptions,
|
||
|
|
) => {
|
||
|
|
const { motionProperties } = useMotionProperties(domTarget, {
|
||
|
|
cursor: 'grab',
|
||
|
|
scale: 1,
|
||
|
|
x: 0,
|
||
|
|
y: 0,
|
||
|
|
})
|
||
|
|
|
||
|
|
const { set } = useSpring(motionProperties as Partial<PermissiveMotionProperties>)
|
||
|
|
|
||
|
|
const handlers: Handlers = {
|
||
|
|
onPinch({ offset: [d] }) {
|
||
|
|
set({ scale: 1 + d / 200 })
|
||
|
|
},
|
||
|
|
onDragStart() {
|
||
|
|
set({ cursor: 'grabbing' })
|
||
|
|
},
|
||
|
|
onDrag({ movement: [x, y], pinching }) {
|
||
|
|
if (!pinching)
|
||
|
|
set({ x, y, cursor: 'grabbing' })
|
||
|
|
},
|
||
|
|
onDragEnd({ vxvy: [vx], pinching }) {
|
||
|
|
if (pinching)
|
||
|
|
return
|
||
|
|
|
||
|
|
set({ cursor: 'grab' })
|
||
|
|
if (carouselOptions) {
|
||
|
|
const isSwipe = Math.abs(vx) > 0.25
|
||
|
|
if (isSwipe) {
|
||
|
|
if (vx > 0 && unref(carouselOptions.hasPrev))
|
||
|
|
carouselOptions.onPrev()
|
||
|
|
|
||
|
|
else if (vx < 0 && unref(carouselOptions.hasNext))
|
||
|
|
carouselOptions.onNext()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set({ x: 0, y: 0 })
|
||
|
|
},
|
||
|
|
onMove({ movement: [x, y], dragging, pinching }) {
|
||
|
|
if (dragging && !pinching)
|
||
|
|
set({ x, y })
|
||
|
|
},
|
||
|
|
onWheel({ event, dragging, pinching }) {
|
||
|
|
if (!dragging && !pinching && event.altKey) {
|
||
|
|
event.preventDefault()
|
||
|
|
// @ts-expect-error why is ts complaining here (motionProperties.scale)?
|
||
|
|
set({ scale: motionProperties.scale + event.deltaY * 0.001 })
|
||
|
|
}
|
||
|
|
},
|
||
|
|
onDblclick() {
|
||
|
|
set({ scale: 1 })
|
||
|
|
},
|
||
|
|
onTouchstart(event) {
|
||
|
|
if (event.touches === 2)
|
||
|
|
set({ scale: 1 })
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
useGesture(handlers, { domTarget })
|
||
|
|
}
|