react-native-page-flipper/lib/module/BookPage/PageShadow.js

Page Flipper

import React from 'react';
import Animated, { interpolate, useAnimatedStyle } from 'react-native-reanimated';
import { Gradient } from '../Components/Gradient';

const PageShadow = _ref => {
  let {
    degrees,
    viewHeight,
    right,
    containerSize
  } = _ref;
  const colors = right ? ['rgba(0,0,0,0.0)', 'rgba(0,0,0,0.0)', 'rgba(0,0,0,0.2)', 'rgba(0,0,0,0.6)'] : ['rgba(0,0,0,0.6)', 'rgba(0,0,0,0.2)', 'rgba(0,0,0,0.0)', 'rgba(0,0,0,0)'];
  const shadowWidth = containerSize.width * 0.02;
  const animatedStyle = useAnimatedStyle(() => {
    const opacity = interpolate(Math.abs(degrees.value), [0, 30, 55, 180], [0, 0, 1, 0]);
    return {
      opacity
    };
  });
  return /*#__PURE__*/React.createElement(Animated.View, {
    style: [{
      zIndex: 2,
      height: viewHeight,
      position: 'absolute',
      width: shadowWidth
    }, right ? {
      left: -shadowWidth
    } : {
      right: -shadowWidth
    }, animatedStyle]
  }, /*#__PURE__*/React.createElement(Gradient, {
    start: {
      x: 0,
      y: 0
    },
    end: {
      x: 1,
      y: 0
    },
    colors: colors,
    style: {
      flex: 1
    }
  }));
};

export default PageShadow;
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