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Add useNativeDriver to shine animations #134

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Add useNativeDriver to shine animations #134

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17 changes: 10 additions & 7 deletions src/animations/Shine.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -26,13 +26,16 @@ export class Shine extends React.Component<IShine> {
public render() {
const { children, style } = this.props;

const left = this.animation.interpolate({
const translateX = this.animation.interpolate({
inputRange: [START_VALUE, END_VALUE],
outputRange: ["0%", "100%"],
outputRange: ["0%", "250%"],
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May I ask why 250%? 😊

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Sure. The width of the animated view is 40% of the parent. In order to Translate over the whole surface of the parent, we need to Translate with 2.5 of itself meaning 100% of the parent

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@mfrachet mfrachet Sep 18, 2020 •
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I'm seeing the following error: https://github.com/facebook/react-native/blob/aee88b6843cea63d6aa0b5879ad6ef9da4701846/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeMap.java#L132

Screenshot_20200918-082052

Looks like % are not valid as a transform value. See the API here: https://reactnative.dev/docs/transforms#transform and I think this is the reason why I didn't rely on this when implementing, hard times 😅 !

Thank you for the effort on this pull requests 😊 🙏

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I see, this is on Android, right? Hmmm... To be fair, I only tested IOS, which was working. I will look into it, when I have some more time 👍

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Yep that's on android :)

extrapolateRight: "extend"
});

return (
<Provider value={[styles.shine, { left }, style]}>{children}</Provider>
<Provider value={[styles.shine, { transform: [{ translateX }] }, style]}>
{children}
</Provider>
);
}

Expand All @@ -43,8 +46,8 @@ export class Shine extends React.Component<IShine> {
duration: this.props.duration || 750,
isInteraction,
toValue: END_VALUE,
useNativeDriver: false,
}).start((e) => {
useNativeDriver: true
}).start(e => {
if (e.finished) {
this.start();
}
Expand All @@ -57,6 +60,6 @@ const styles = StyleSheet.create({
backgroundColor: "white",
height: "100%",
opacity: 0.5,
width: "40%",
},
width: "40%"
}
});
26 changes: 17 additions & 9 deletions src/animations/ShineOverlay.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,15 @@ export interface IShine {
duration?: number;
}

export class ShineOverlay extends React.Component<IShine> {
export class ShineOverlay extends React.Component<IShine, { width: number }> {
private animation: Animated.Value;
constructor(props: IShine) {
super(props);

this.state = {
width: 0
};

this.animation = new Animated.Value(0);
}

Expand All @@ -25,15 +29,19 @@ export class ShineOverlay extends React.Component<IShine> {
public render() {
const { children } = this.props;

const left = this.animation.interpolate({
const translateX = this.animation.interpolate({
inputRange: [START_VALUE, END_VALUE],
outputRange: ["0%", "100%"],
outputRange: [0, this.state.width]
});

return (
<View>
<View
onLayout={e => this.setState({ width: e.nativeEvent.layout.width })}
>
{children}
<Animated.View style={[styles.shine, { left }]} />
<Animated.View
style={[styles.shine, { transform: [{ translateX }] }]}
/>
</View>
);
}
Expand All @@ -45,8 +53,8 @@ export class ShineOverlay extends React.Component<IShine> {
duration: this.props.duration || 750,
isInteraction,
toValue: END_VALUE,
useNativeDriver: false,
}).start((e) => {
useNativeDriver: true
}).start(e => {
if (e.finished) {
this.start();
}
Expand All @@ -60,6 +68,6 @@ const styles = StyleSheet.create({
height: "100%",
opacity: 0.4,
position: "absolute",
width: 30,
},
width: 30
}
});