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
|
"use client";
import type { PropsWithChildren, ReactElement } from "react";
import { StyleSheet } from "react-native";
import Animated, {
interpolate,
useAnimatedRef,
useAnimatedStyle,
useScrollViewOffset,
} from "react-native-reanimated";
import { ThemedView } from "@/components/ThemedView";
import { useBottomTabOverflow } from "@/components/ui/TabBarBackground";
import { useColorScheme } from "@/hooks/useColorScheme";
const HEADER_HEIGHT = 250;
type Props = PropsWithChildren<{
headerImage: ReactElement;
headerBackgroundColor: { dark: string; light: string };
}>;
export default function ParallaxScrollView({
children,
headerImage,
headerBackgroundColor,
}: Props) {
const colorScheme = useColorScheme() ?? "light";
const scrollRef = useAnimatedRef<Animated.ScrollView>();
const scrollOffset = useScrollViewOffset(scrollRef);
const bottom = useBottomTabOverflow();
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 (
<ThemedView style={styles.container}>
<Animated.ScrollView
ref={scrollRef}
scrollEventThrottle={16}
scrollIndicatorInsets={{ bottom }}
contentContainerStyle={{ paddingBottom: bottom }}
>
<Animated.View
style={[
styles.header,
{ backgroundColor: headerBackgroundColor[colorScheme] },
headerAnimatedStyle,
]}
>
{headerImage}
</Animated.View>
<ThemedView style={styles.content}>{children}</ThemedView>
</Animated.ScrollView>
</ThemedView>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
header: {
height: HEADER_HEIGHT,
overflow: "hidden",
},
content: {
flex: 1,
padding: 32,
gap: 16,
overflow: "hidden",
},
});
|
