react-native-reanimated#Node TypeScript Examples

The following examples show how to use react-native-reanimated#Node. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: Bar.tsx    From expo-progress with MIT License 4 votes vote down vote up 
function ProgressBar({
  isIndeterminate = false,
  duration = isIndeterminate ? 1000 : 500,
  isAnimated = false,
  progress = isIndeterminate ? 0.5 : 0,
  height = 7,
  borderRadius = height * 0.5,
  // Default iOS blue
  color = '#007aff',
  trackColor = 'transparent',
  style,
  trackImage,
  progressImage,
}: ProgressBarProps) {
  const [width, setWidth] = React.useState(0);
  const progressValue = useValue(isAnimated ? 0 : progress);
  const indeterminateValue = useValue(0);
  const animatedWidth = interpolate(
    clamp(progressValue, minProgress, maxProgress),
    {
      inputRange: [minProgress, maxProgress],
      outputRange: [0, width],
      extrapolate: Extrapolate.CLAMP,
    }
  );

  useCode(() => {
    if (isAnimated) {
      return set(
        progressValue,
        timing({
          from: progressValue,
          to: progress,
          duration,
        })
      );
    } else {
      return set(progressValue, progress);
    }
  }, [progress]);

  useCode(() => {
    if (isIndeterminate) {
      const loopingIndeterminateValue = loop({
        autoStart: true,
        boomerang: false,
        duration,
      });
      return set(indeterminateValue, loopingIndeterminateValue);
    }
    const animatedIndeterminateValue = timing({
      from: indeterminateValue,
      to: 0,
    });
    return set(indeterminateValue, animatedIndeterminateValue);
  }, [isIndeterminate]);

  // todo: web has a bug where the reanimated Animated.View style is not updating unless this is an animated value.
  let translateX: Node<number> | number = useValue(0);

  if (isIndeterminate) {
    translateX = interpolate(indeterminateValue, {
      inputRange: [0, 1],
      outputRange: [multiply(-1, animatedWidth), width],
    });
  }

  return (
    <ImageBackground
      onLayout={(e: LayoutChangeEvent) => {
        setWidth(e.nativeEvent.layout.width);
      }}
      resizeMode={'stretch'}
      style={[
        styles.container,
        {
          height,
          borderRadius,
          backgroundColor: trackColor,
        },
        style,
      ]}
      // @ts-ignore
      source={trackImage}
    >
      <Animated.Image
        style={[
          styles.bar,
          {
            width: animatedWidth,
            transform: [
              {
                translateX,
              },
            ],
            backgroundColor: color,
            borderRadius,
          },
        ]}
        // @ts-ignore
        source={progressImage}
      />
    </ImageBackground>
  );
}