Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | import type { PropsWithChildren, ReactElement } from 'react';
import { StyleSheet } from 'react-native';
import Animated, {
interpolate,
useAnimatedRef,
useAnimatedStyle,
useScrollOffset,
} from 'react-native-reanimated';
import { ThemedView } from '@/components/themed-view';
import { useColorScheme } from '@/hooks/use-color-scheme';
import { useThemeColor } from '@/hooks/use-theme-color';
const HEADER_HEIGHT = 250;
type Props = PropsWithChildren<{
headerImage: ReactElement;
headerBackgroundColor: { dark: string; light: string };
}>;
export default function ParallaxScrollView({
children,
headerImage,
headerBackgroundColor,
}: Props) {
const backgroundColor = useThemeColor({}, 'background');
const colorScheme = useColorScheme() ?? 'light';
const scrollRef = useAnimatedRef<Animated.ScrollView>();
const scrollOffset = useScrollOffset(scrollRef);
const headerAnimatedStyle = useAnimatedStyle(() => {
return {
transform: [
{
translateY: interpolate(
scrollOffset.value,
[-HEADER_HEIGHT, 0, HEADER_HEIGHT],
[-HEADER_HEIGHT / 2, 0, HEADER_HEIGHT * 0.75]
),
},
{
scale: interpolate(scrollOffset.value, [-HEADER_HEIGHT, 0, HEADER_HEIGHT], [2, 1, 1]),
},
],
};
});
return (
<Animated.ScrollView
ref={scrollRef}
style={{ backgroundColor, flex: 1 }}
scrollEventThrottle={16}>
<Animated.View
style={[
styles.header,
{ backgroundColor: headerBackgroundColor[colorScheme] },
headerAnimatedStyle,
]}>
{headerImage}
</Animated.View>
<ThemedView style={styles.content}>{children}</ThemedView>
</Animated.ScrollView>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
header: {
height: HEADER_HEIGHT,
overflow: 'hidden',
},
content: {
flex: 1,
padding: 32,
gap: 16,
overflow: 'hidden',
},
});
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