117 lines
3.2 KiB
JavaScript
117 lines
3.2 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule AnExScroll
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* @flow
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*/
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'use strict';
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var React = require('react');
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var ReactNative = require('react-native');
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var {
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Animated,
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Image,
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ScrollView,
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StyleSheet,
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Text,
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View,
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} = ReactNative;
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class AnExScroll extends React.Component<$FlowFixMeProps, any> {
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state: any = { scrollX: new Animated.Value(0) };
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render() {
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var width = this.props.panelWidth;
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return (
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<View style={styles.container}>
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<ScrollView
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automaticallyAdjustContentInsets={false}
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scrollEventThrottle={16 /* get all events */ }
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onScroll={Animated.event(
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[{nativeEvent: {contentOffset: {x: this.state.scrollX}}}] // nested event mapping
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)}
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contentContainerStyle={{flex: 1, padding: 10}}
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pagingEnabled={true}
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horizontal={true}>
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<View style={[styles.page, {width}]}>
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<Image
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style={{width: 180, height: 180}}
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source={HAWK_PIC}
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/>
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<Text style={styles.text}>
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{'I\'ll find something to put here.'}
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</Text>
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</View>
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<View style={[styles.page, {width}]}>
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<Text style={styles.text}>{'And here.'}</Text>
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</View>
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<View style={[styles.page, {width}]}>
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<Text>{'But not here.'}</Text>
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</View>
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</ScrollView>
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<Animated.Image
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pointerEvents="none"
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style={[styles.bunny, {transform: [
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{
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translateX: this.state.scrollX.interpolate({
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inputRange: [0, width, 2 * width],
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outputRange: [0, 0, width / 3],
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extrapolate: 'clamp',
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}),
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},
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{
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translateY: this.state.scrollX.interpolate({
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inputRange: [0, width, 2 * width],
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outputRange: [0, -200, -260],
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extrapolate: 'clamp',
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}),
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},
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{
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scale: this.state.scrollX.interpolate({
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inputRange: [0, width, 2 * width],
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outputRange: [0.5, 0.5, 2],
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extrapolate: 'clamp',
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}),
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},
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]}]}
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source={BUNNY_PIC}
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/>
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</View>
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);
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}
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}
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var styles = StyleSheet.create({
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container: {
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backgroundColor: 'transparent',
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flex: 1,
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},
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text: {
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padding: 4,
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paddingBottom: 10,
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fontWeight: 'bold',
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fontSize: 18,
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backgroundColor: 'transparent',
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},
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bunny: {
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backgroundColor: 'transparent',
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position: 'absolute',
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height: 160,
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width: 160,
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},
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page: {
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alignItems: 'center',
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justifyContent: 'flex-end',
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},
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});
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var HAWK_PIC = {uri: 'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/t39.1997-6/10734304_1562225620659674_837511701_n.png'};
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var BUNNY_PIC = {uri: 'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/t39.1997-6/851564_531111380292237_1898871086_n.png'};
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module.exports = AnExScroll;
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