64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
import PropTypes from 'prop-types';
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import React from 'react';
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import { Animated, Text } from 'react-native';
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export default class Fade extends React.Component {
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static propTypes = {
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visible: PropTypes.bool.isRequired,
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style: Animated.View.propTypes.style,
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children: PropTypes.oneOfType([
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PropTypes.arrayOf(PropTypes.node),
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PropTypes.node
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])
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}
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constructor(props) {
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super(props);
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const { visible } = this.props;
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this.state = {
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visible
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};
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this._visibility = new Animated.Value(visible ? 1 : 0);
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}
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componentWillReceiveProps(nextProps) {
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if (nextProps.visible) {
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this.setState({ visible: true });
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}
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Animated.timing(this._visibility, {
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toValue: nextProps.visible ? 1 : 0,
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duration: 300,
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useNativeDriver: true
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}).start(() => {
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this.setState({ visible: nextProps.visible });
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});
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}
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render() {
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const { visible } = this.state;
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const { style, children, ...rest } = this.props;
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const containerStyle = {
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opacity: this._visibility.interpolate({
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inputRange: [0, 1],
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outputRange: [0, 1]
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}),
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transform: [
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{
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scale: this._visibility.interpolate({
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inputRange: [0, 1],
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outputRange: [1.1, 1]
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})
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}
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]
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};
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const combinedStyle = [containerStyle, style];
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return (
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<Animated.View style={visible ? combinedStyle : containerStyle} {...rest}>
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<Text>{visible ? children : null}</Text>
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</Animated.View>
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);
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}
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}
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