react-native-reanimated/Example/interactablePlayground/examples/AlertAreas.js

import React, { Component } from 'react';
import { StyleSheet, View, Dimensions, Text } from 'react-native';
import Interactable from '../../Interactable';

const Screen = {
  width: Dimensions.get('window').width,
  height: Dimensions.get('window').height - 75,
};

export default class AlertAreas extends Component {
  constructor(props) {
    super(props);
    this.state = {
      dragEnabled: true,
    };
  }
  render() {
    return (
      <View style={styles.container}>
        <View style={styles.markerContainer}>
          <View
            style={{
              backgroundColor: '#00ff0030',
              position: 'absolute',
              left: Screen.width / 2 + 100,
              right: 0,
              top: 0,
              bottom: 0,
            }}
          />
        </View>
        <View style={styles.markerContainer}>
          <View
            style={{
              backgroundColor: '#ffff0060',
              position: 'absolute',
              left: Screen.width / 2 - 150,
              right: Screen.width / 2 + 50,
              top: Screen.height / 2 + 100,
              bottom: Screen.height / 2 - 200,
            }}
          />
        </View>
        <View style={styles.markerContainer}>
          <View
            style={{
              backgroundColor: '#add8e6',
              position: 'absolute',
              left: 0,
              right: Screen.width / 2 + 50,
              top: Screen.height / 2 - 150,
              bottom: Screen.height / 2,
            }}>
            <Text style={{ fontSize: 28 }}>Non Draggable Area</Text>
          </View>
        </View>
        <Interactable.View
          snapPoints={[
            { x: -140, y: -250 },
            { x: 140, y: -250 },
            { x: -140, y: 250 },
            { x: 140, y: 250 },
          ]}
          dragEnabled={this.state.dragEnabled}
          alertAreas={[
            { id: 'green', influenceArea: { left: 100 } },
            {
              id: 'yellow',
              influenceArea: { top: 100, bottom: 200, left: -150, right: -50 },
            },
            {
              id: 'blue',
              influenceArea: {
                top: -150,
                bottom: 0,
                left: -Screen.width / 2,
                right: -50,
              },
            },
          ]}
          onAlert={this.onAlert.bind(this)}
          onDrag={this.onDrag.bind(this)}
          initialPosition={{ x: -140, y: -250 }}>
          <View
            style={{
              width: 70,
              height: 70,
              backgroundColor: 'red',
              borderRadius: 35,
            }}
          />
        </Interactable.View>
      </View>
    );
  }
  onAlert(event) {
    console.log('alert:', event.nativeEvent);
    if (JSON.stringify(event.nativeEvent).includes('"blue":"enter"')) {
      this.setState({ dragEnabled: false });
    }
    if (JSON.stringify(event.nativeEvent).includes('"blue":"leave"')) {
      this.setState({ dragEnabled: true });
    }
  }
  onDrag(event) {
    console.log('drag:', event.nativeEvent);
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: 'white',
  },
  markerContainer: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    position: 'absolute',
    left: 0,
    right: 0,
    top: 0,
    bottom: 0,
  },
});