-
Notifications
You must be signed in to change notification settings - Fork 1.9k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Header blurred banner on overscroll (take 2) (#5474)
* grow banner when overscrolling * add blurview * make backdrop blur as it scrolls * add activity indicator * use rotated spinner instead of arrow * persist position of back button * make back button prettier * make blur less jarring * Unify effects * Tweak impl * determine if should animate based on scroll amount * sign comment --------- Co-authored-by: Dan Abramov <[email protected]>
- Loading branch information
Showing
11 changed files
with
341 additions
and
63 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,212 @@ | ||
| import React, {useEffect, useState} from 'react' | ||
| import {View} from 'react-native' | ||
| import {ActivityIndicator} from 'react-native' | ||
| import Animated, { | ||
| Extrapolation, | ||
| interpolate, | ||
| runOnJS, | ||
| SharedValue, | ||
| useAnimatedProps, | ||
| useAnimatedReaction, | ||
| useAnimatedStyle, | ||
| } from 'react-native-reanimated' | ||
| import {BlurView} from 'expo-blur' | ||
| import {useIsFetching} from '@tanstack/react-query' | ||
|
|
||
| import {isIOS} from '#/platform/detection' | ||
| import {RQKEY_ROOT as STARTERPACK_RQKEY_ROOT} from '#/state/queries/actor-starter-packs' | ||
| import {RQKEY_ROOT as FEED_RQKEY_ROOT} from '#/state/queries/post-feed' | ||
| import {RQKEY_ROOT as FEEDGEN_RQKEY_ROOT} from '#/state/queries/profile-feedgens' | ||
| import {RQKEY_ROOT as LIST_RQKEY_ROOT} from '#/state/queries/profile-lists' | ||
| import {usePagerHeaderContext} from '#/view/com/pager/PagerHeaderContext' | ||
| import {atoms as a} from '#/alf' | ||
|
|
||
| const AnimatedBlurView = Animated.createAnimatedComponent(BlurView) | ||
|
|
||
| export function GrowableBanner({ | ||
| backButton, | ||
| children, | ||
| }: { | ||
| backButton?: React.ReactNode | ||
| children: React.ReactNode | ||
| }) { | ||
| const pagerContext = usePagerHeaderContext() | ||
|
|
||
| // pagerContext should only be present on iOS, but better safe than sorry | ||
| if (!pagerContext || !isIOS) { | ||
| return ( | ||
| <View style={[a.w_full, a.h_full]}> | ||
| {backButton} | ||
| {children} | ||
| </View> | ||
| ) | ||
| } | ||
|
|
||
| const {scrollY} = pagerContext | ||
|
|
||
| return ( | ||
| <GrowableBannerInner scrollY={scrollY} backButton={backButton}> | ||
| {children} | ||
| </GrowableBannerInner> | ||
| ) | ||
| } | ||
|
|
||
| function GrowableBannerInner({ | ||
| scrollY, | ||
| backButton, | ||
| children, | ||
| }: { | ||
| scrollY: SharedValue<number> | ||
| backButton?: React.ReactNode | ||
| children: React.ReactNode | ||
| }) { | ||
| const isFetching = useIsProfileFetching() | ||
| const animateSpinner = useShouldAnimateSpinner({isFetching, scrollY}) | ||
|
|
||
| const animatedStyle = useAnimatedStyle(() => ({ | ||
| transform: [ | ||
| { | ||
| scale: interpolate(scrollY.value, [-150, 0], [2, 1], { | ||
| extrapolateRight: Extrapolation.CLAMP, | ||
| }), | ||
| }, | ||
| ], | ||
| })) | ||
|
|
||
| const animatedBlurViewProps = useAnimatedProps(() => { | ||
| return { | ||
| intensity: interpolate( | ||
| scrollY.value, | ||
| [-400, -100, -15], | ||
| [70, 60, 0], | ||
| Extrapolation.CLAMP, | ||
| ), | ||
| } | ||
| }) | ||
|
|
||
| const animatedSpinnerStyle = useAnimatedStyle(() => { | ||
| return { | ||
| display: scrollY.value < 0 ? 'flex' : 'none', | ||
| opacity: interpolate( | ||
| scrollY.value, | ||
| [-60, -15], | ||
| [1, 0], | ||
| Extrapolation.CLAMP, | ||
| ), | ||
| transform: [ | ||
| {translateY: interpolate(scrollY.value, [-150, 0], [-75, 0])}, | ||
| {rotate: '90deg'}, | ||
| ], | ||
| } | ||
| }) | ||
|
|
||
| const animatedBackButtonStyle = useAnimatedStyle(() => ({ | ||
| transform: [ | ||
| { | ||
| translateY: interpolate(scrollY.value, [-150, 60], [-150, 60], { | ||
| extrapolateRight: Extrapolation.CLAMP, | ||
| }), | ||
| }, | ||
| ], | ||
| })) | ||
|
|
||
| return ( | ||
| <> | ||
| <Animated.View | ||
| style={[ | ||
| a.absolute, | ||
| {left: 0, right: 0, bottom: 0}, | ||
| {height: 150}, | ||
| {transformOrigin: 'bottom'}, | ||
| animatedStyle, | ||
| ]}> | ||
| {children} | ||
| <AnimatedBlurView | ||
| style={[a.absolute, a.inset_0]} | ||
| tint="dark" | ||
| animatedProps={animatedBlurViewProps} | ||
| /> | ||
| </Animated.View> | ||
| <View style={[a.absolute, a.inset_0, a.justify_center, a.align_center]}> | ||
| <Animated.View style={[animatedSpinnerStyle]}> | ||
| <ActivityIndicator | ||
| key={animateSpinner ? 'spin' : 'stop'} | ||
| size="large" | ||
| color="white" | ||
| animating={animateSpinner} | ||
| hidesWhenStopped={false} | ||
| /> | ||
| </Animated.View> | ||
| </View> | ||
| <Animated.View style={[animatedBackButtonStyle]}> | ||
| {backButton} | ||
| </Animated.View> | ||
| </> | ||
| ) | ||
| } | ||
|
|
||
| function useIsProfileFetching() { | ||
| // are any of the profile-related queries fetching? | ||
| return [ | ||
| useIsFetching({queryKey: [FEED_RQKEY_ROOT]}), | ||
| useIsFetching({queryKey: [FEEDGEN_RQKEY_ROOT]}), | ||
| useIsFetching({queryKey: [LIST_RQKEY_ROOT]}), | ||
| useIsFetching({queryKey: [STARTERPACK_RQKEY_ROOT]}), | ||
| ].some(isFetching => isFetching) | ||
| } | ||
|
|
||
| function useShouldAnimateSpinner({ | ||
| isFetching, | ||
| scrollY, | ||
| }: { | ||
| isFetching: boolean | ||
| scrollY: SharedValue<number> | ||
| }) { | ||
| const [isOverscrolled, setIsOverscrolled] = useState(false) | ||
| // HACK: it reports a scroll pos of 0 for a tick when fetching finishes | ||
| // so paper over that by keeping it true for a bit -sfn | ||
| const stickyIsOverscrolled = useStickyToggle(isOverscrolled, 10) | ||
|
|
||
| useAnimatedReaction( | ||
| () => scrollY.value < -5, | ||
| (value, prevValue) => { | ||
| if (value !== prevValue) { | ||
| runOnJS(setIsOverscrolled)(value) | ||
| } | ||
| }, | ||
| [scrollY], | ||
| ) | ||
|
|
||
| const [isAnimating, setIsAnimating] = useState(isFetching) | ||
|
|
||
| if (isFetching && !isAnimating) { | ||
| setIsAnimating(true) | ||
| } | ||
|
|
||
| if (!isFetching && isAnimating && !stickyIsOverscrolled) { | ||
| setIsAnimating(false) | ||
| } | ||
|
|
||
| return isAnimating | ||
| } | ||
|
|
||
| // stayed true for at least `delay` ms before returning to false | ||
| function useStickyToggle(value: boolean, delay: number) { | ||
| const [prevValue, setPrevValue] = useState(value) | ||
| const [isSticking, setIsSticking] = useState(false) | ||
|
|
||
| useEffect(() => { | ||
| if (isSticking) { | ||
| const timeout = setTimeout(() => setIsSticking(false), delay) | ||
| return () => clearTimeout(timeout) | ||
| } | ||
| }, [isSticking, delay]) | ||
|
|
||
| if (value !== prevValue) { | ||
| setIsSticking(prevValue) // Going true -> false should stick. | ||
| setPrevValue(value) | ||
| return prevValue ? true : value | ||
| } | ||
|
|
||
| return isSticking ? true : value | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.