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July 4, 2019 15:13
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| import React from 'react'; | |
| import { Animated, Easing } from 'react-native'; | |
| import { LinearGradient as SvgLinearGradient, Stop } from 'react-native-svg'; | |
| const AnimatedStop = Animated.createAnimatedComponent(Stop); | |
| export class AnimatedLinearGradient extends React.Component<LinearGradientProps> { | |
| constructor(props) { | |
| super(props); | |
| this.state = { | |
| offsetOne: new Animated.Value(0), | |
| offsetTwo: new Animated.Value(0.1), | |
| offsetThree: new Animated.Value(0.3), | |
| }; | |
| this._mounted = false; | |
| } | |
| componentDidMount() { | |
| this._mounted = true; | |
| this.startAnimation(); | |
| } | |
| componentWillUnmount() { | |
| this._mounted = false; | |
| } | |
| startAnimation() { | |
| if (!this._mounted) return; | |
| Animated.loop( | |
| Animated.parallel([ | |
| Animated.timing(this.state.offsetOne, { | |
| toValue: 1, | |
| duration: 1000, | |
| // easing: Easing.out(Easing.exp), | |
| delay: 400, | |
| // useNativeDriver: true, | |
| }), | |
| Animated.timing(this.state.offsetTwo, { | |
| toValue: 1, | |
| duration: 700, | |
| //easing: Easing.out(Easing.exp), | |
| delay: 400, | |
| // useNativeDriver: true, | |
| }), | |
| Animated.timing(this.state.offsetThree, { | |
| toValue: 1, | |
| duration: 400, | |
| //easing: Easing.out(Easing.exp), | |
| delay: 400, | |
| // useNativeDriver: true, | |
| }), | |
| ]), | |
| ).start(); | |
| } | |
| render() { | |
| const { primaryColor, secondaryColor, ...restProps } = this.props; | |
| return ( | |
| <SvgLinearGradient {...restProps}> | |
| <AnimatedStop offset={this.state.offsetOne} stopColor={primaryColor} opacity={1} /> | |
| <AnimatedStop offset={this.state.offsetTwo} stopColor={secondaryColor} opacity={1} /> | |
| <AnimatedStop offset={this.state.offsetThree} stopColor={primaryColor} opacity={1} /> | |
| </SvgLinearGradient> | |
| ); | |
| } | |
| } | |
| // Usage | |
| // <AnimatedLinearGradient | |
| // x1="0%" | |
| // y1="0%" | |
| // x2="0%" | |
| // y2="100%" | |
| // id="areaFill" | |
| // primaryColor={'#F2DEB1'} | |
| // secondaryColor={'#D68D1C'} | |
| // /> |
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