Created
June 10, 2024 13:57
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Modern reanimated react-native horizontal marquee marquee
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import { StyleSheet, View } from "react-native"; | |
import React, { useEffect, useState } from "react"; | |
import Animated, { | |
useAnimatedRef, | |
useAnimatedStyle, | |
useSharedValue, | |
withRepeat, | |
withTiming, | |
} from "react-native-reanimated"; | |
const Marquee = ({ children, style }) => { | |
const scrollRef = useAnimatedRef(); | |
const offset = useSharedValue(0); | |
const [scrollViewWidth, setScrollViewWidth] = useState(0); | |
const [childWidth, setChildWidth] = useState(0); | |
useEffect(() => { | |
if (scrollViewWidth < childWidth) { | |
offset.value = withRepeat( | |
withTiming(scrollViewWidth - childWidth, { duration: 5000 }), | |
-1, | |
true | |
); | |
} | |
}, [childWidth, scrollViewWidth]); | |
const animatedStyle = useAnimatedStyle(() => ({ | |
transform: [{ translateX: offset.value }], | |
})); | |
return ( | |
<View | |
style={style} | |
onLayout={(event) => setScrollViewWidth(event.nativeEvent.layout?.width)} | |
> | |
<Animated.ScrollView | |
ref={scrollRef} | |
horizontal | |
scrollEnabled={false} | |
contentContainerStyle={styles.flexGrow} | |
onContentSizeChange={(width, height) => setChildWidth(width)} | |
> | |
<Animated.View style={animatedStyle}>{children}</Animated.View> | |
</Animated.ScrollView> | |
</View> | |
); | |
}; | |
export default Marquee; | |
const styles = StyleSheet.create({ | |
flexGrow: { | |
flexGrow: 1, | |
}, | |
}); |
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