application-amicale/src/components/Animations/AnimatedFAB.tsx
2020-09-22 17:43:40 +02:00

92 wiersze
2,3 KiB
TypeScript

/*
* Copyright (c) 2019 - 2020 Arnaud Vergnet.
*
* This file is part of Campus INSAT.
*
* Campus INSAT is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Campus INSAT is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Campus INSAT. If not, see <https://www.gnu.org/licenses/>.
*/
import * as React from 'react';
import {
NativeScrollEvent,
NativeSyntheticEvent,
StyleSheet,
View,
} from 'react-native';
import {FAB} from 'react-native-paper';
import * as Animatable from 'react-native-animatable';
import AutoHideHandler from '../../utils/AutoHideHandler';
import CustomTabBar from '../Tabbar/CustomTabBar';
type PropsType = {
icon: string;
onPress: () => void;
};
const styles = StyleSheet.create({
fab: {
position: 'absolute',
margin: 16,
right: 0,
},
});
export default class AnimatedFAB extends React.Component<PropsType> {
ref: {current: null | (Animatable.View & View)};
hideHandler: AutoHideHandler;
constructor(props: PropsType) {
super(props);
this.ref = React.createRef();
this.hideHandler = new AutoHideHandler(false);
this.hideHandler.addListener(this.onHideChange);
}
onScroll = (event: NativeSyntheticEvent<NativeScrollEvent>) => {
this.hideHandler.onScroll(event);
};
onHideChange = (shouldHide: boolean) => {
const ref = this.ref;
if (
ref &&
ref.current &&
ref.current.bounceOutDown &&
ref.current.bounceInUp
) {
if (shouldHide) {
ref.current.bounceOutDown(1000);
} else {
ref.current.bounceInUp(1000);
}
}
};
render() {
const {props} = this;
return (
<Animatable.View ref={this.ref} useNativeDriver={true}>
<FAB
icon={props.icon}
onPress={props.onPress}
style={{
...styles.fab,
bottom: CustomTabBar.TAB_BAR_HEIGHT,
}}
/>
</Animatable.View>
);
}
}