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code/app/app-rn/components/parallax-scroll-view.tsx

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+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',
+  },
+})