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91 changes: 9 additions & 82 deletions
91
packages/framer-motion/src/value/scroll/use-element-scroll.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,84 +1,11 @@ | ||
| import { RefObject } from "react" | ||
| import { useConstant } from "../../utils/use-constant" | ||
| import { | ||
| createScrollMotionValues, | ||
| ScrollMotionValues, | ||
| createScrollUpdater, | ||
| } from "./utils" | ||
| import { addDomEvent } from "../../events/use-dom-event" | ||
| import { useIsomorphicLayoutEffect } from "../../utils/use-isomorphic-effect" | ||
| import { invariant } from "hey-listen" | ||
|
|
||
| const getElementScrollOffsets = (element: HTMLElement) => () => { | ||
| return { | ||
| xOffset: element.scrollLeft, | ||
| yOffset: element.scrollTop, | ||
| xMaxOffset: element.scrollWidth - element.offsetWidth, | ||
| yMaxOffset: element.scrollHeight - element.offsetHeight, | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Returns MotionValues that update when the provided element scrolls: | ||
| * | ||
| * - `scrollX` — Horizontal scroll distance in pixels. | ||
| * - `scrollY` — Vertical scroll distance in pixels. | ||
| * - `scrollXProgress` — Horizontal scroll progress between `0` and `1`. | ||
| * - `scrollYProgress` — Vertical scroll progress between `0` and `1`. | ||
| * | ||
| * This element must be set to `overflow: scroll` on either or both axes to report scroll offset. | ||
| * | ||
| * ```jsx | ||
| * export const MyComponent = () => { | ||
| * const ref = useRef() | ||
| * const { scrollYProgress } = useElementScroll(ref) | ||
| * | ||
| * return ( | ||
| * <div ref={ref}> | ||
| * <motion.div style={{ scaleX: scrollYProgress }} /> | ||
| * </div> | ||
| * ) | ||
| * } | ||
| * ``` | ||
| * | ||
| * @public | ||
| */ | ||
| export function useElementScroll( | ||
| ref: RefObject<HTMLElement> | ||
| ): ScrollMotionValues { | ||
| const values = useConstant(createScrollMotionValues) | ||
|
|
||
| useIsomorphicLayoutEffect(() => { | ||
| const element = ref.current | ||
|
|
||
| invariant( | ||
| !!element, | ||
| "ref provided to useScroll must be passed into a HTML element." | ||
| ) | ||
| if (!element) return | ||
|
|
||
| const updateScrollValues = createScrollUpdater( | ||
| values, | ||
| getElementScrollOffsets(element) | ||
| ) | ||
|
|
||
| const scrollListener = addDomEvent( | ||
| element, | ||
| "scroll", | ||
| updateScrollValues | ||
| ) | ||
|
|
||
| const resizeListener = addDomEvent( | ||
| element, | ||
| "resize", | ||
| updateScrollValues | ||
| ) | ||
|
|
||
| return () => { | ||
| scrollListener && scrollListener() | ||
| resizeListener && resizeListener() | ||
| } | ||
| }, []) | ||
|
|
||
| return values | ||
| import { warnOnce } from "../../utils/warn-once" | ||
| import { useScroll } from "../use-scroll" | ||
|
|
||
| export function useElementScroll(ref: RefObject<HTMLElement>) { | ||
| warnOnce( | ||
| false, | ||
| "useElementScroll is deprecated. Convert to useScroll({ container: ref })." | ||
| ) | ||
| return useScroll({ container: ref }) | ||
| } |
70 changes: 5 additions & 65 deletions
70
packages/framer-motion/src/value/scroll/use-viewport-scroll.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,67 +1,7 @@ | ||
| import { | ||
| createScrollMotionValues, | ||
| createScrollUpdater, | ||
| ScrollMotionValues, | ||
| } from "./utils" | ||
| import { addDomEvent } from "../../events/use-dom-event" | ||
| import { useIsomorphicLayoutEffect } from "../../utils/use-isomorphic-effect" | ||
| import { warnOnce } from "../../utils/warn-once" | ||
| import { useScroll } from "../use-scroll" | ||
|
|
||
| let viewportScrollValues: ScrollMotionValues | ||
|
|
||
| function getViewportScrollOffsets() { | ||
| return { | ||
| xOffset: window.pageXOffset, | ||
| yOffset: window.pageYOffset, | ||
| xMaxOffset: document.body.clientWidth - window.innerWidth, | ||
| yMaxOffset: document.body.clientHeight - window.innerHeight, | ||
| } | ||
| } | ||
|
|
||
| let hasListeners = false | ||
|
|
||
| function addEventListeners() { | ||
| hasListeners = true | ||
|
|
||
| const updateScrollValues = createScrollUpdater( | ||
| viewportScrollValues, | ||
| getViewportScrollOffsets | ||
| ) | ||
|
|
||
| addDomEvent(window, "scroll", updateScrollValues) | ||
| addDomEvent(window, "resize", updateScrollValues) | ||
| } | ||
|
|
||
| /** | ||
| * Returns MotionValues that update when the viewport scrolls: | ||
| * | ||
| * - `scrollX` — Horizontal scroll distance in pixels. | ||
| * - `scrollY` — Vertical scroll distance in pixels. | ||
| * - `scrollXProgress` — Horizontal scroll progress between `0` and `1`. | ||
| * - `scrollYProgress` — Vertical scroll progress between `0` and `1`. | ||
| * | ||
| * **Warning:** Setting `body` or `html` to `height: 100%` or similar will break the `Progress` | ||
| * values as this breaks the browser's capability to accurately measure the page length. | ||
| * | ||
| * ```jsx | ||
| * export const MyComponent = () => { | ||
| * const { scrollYProgress } = useViewportScroll() | ||
| * return <motion.div style={{ scaleX: scrollYProgress }} /> | ||
| * } | ||
| * ``` | ||
| * | ||
| * @public | ||
| */ | ||
| export function useViewportScroll(): ScrollMotionValues { | ||
| /** | ||
| * Lazy-initialise the viewport scroll values | ||
| */ | ||
| if (!viewportScrollValues) { | ||
| viewportScrollValues = createScrollMotionValues() | ||
| } | ||
|
|
||
| useIsomorphicLayoutEffect(() => { | ||
| !hasListeners && addEventListeners() | ||
| }, []) | ||
|
|
||
| return viewportScrollValues | ||
| export function useViewportScroll() { | ||
| warnOnce(false, "useViewportScroll is deprecated. Convert to useScroll().") | ||
| return useScroll() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| import { scroll, ScrollOptions } from "@motionone/dom" | ||
| import { RefObject } from "react" | ||
| import { motionValue } from "." | ||
| import { useIsomorphicLayoutEffect } from "../three-entry" | ||
| import { useConstant } from "../utils/use-constant" | ||
|
|
||
| interface UseScrollOptions extends Omit<ScrollOptions, "container" | "target"> { | ||
| container?: RefObject<HTMLElement> | ||
| target?: RefObject<HTMLElement> | ||
| } | ||
|
|
||
| const createScrollMotionValues = () => ({ | ||
| scrollX: motionValue(0), | ||
| scrollY: motionValue(0), | ||
| scrollXProgress: motionValue(0), | ||
| scrollYProgress: motionValue(0), | ||
| }) | ||
|
|
||
| export function useScroll({ | ||
| container, | ||
| target, | ||
| ...options | ||
| }: UseScrollOptions = {}) { | ||
| const values = useConstant(createScrollMotionValues) | ||
|
|
||
| useIsomorphicLayoutEffect(() => { | ||
| return scroll( | ||
| ({ x, y }) => { | ||
| values.scrollX.set(x.current) | ||
| values.scrollXProgress.set(x.progress) | ||
| values.scrollY.set(y.current) | ||
| values.scrollYProgress.set(y.progress) | ||
| }, | ||
| { | ||
| ...options, | ||
| container: container?.current || undefined, | ||
| target: target?.current || undefined, | ||
| } | ||
| ) | ||
| }, []) | ||
|
|
||
| return values | ||
| } |
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