GT2/Ejectable/screens/SettingsScreen.tsx

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import * as React from 'react';
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import { Alert, Button, StyleSheet, Switch, TextInput } from 'react-native';
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import { Text, View } from '../components/Themed';
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import { useState } from 'react';
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import ScreenInfo from '../components/ScreenInfo';
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import { Trips } from '../GT2';
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import { RootTabScreenProps } from '../types';
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export default function SettingsScreen( { navigation }: RootTabScreenProps<'Settings'>) {
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const [number, onChangeNumber] = React.useState("");
const [isKM, setMiles] = useState(false);
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const toggleUnits = () => { setMiles(previousState => !previousState)
Trips.units = isKM ? "km" : "mi";
};
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return (
<View style={styles.container}>
<Text style={styles.title}>Model Settings</Text>
<View style={styles.separator} lightColor="#eee" darkColor="rgba(255,255,255,0.1)" />
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<ScreenInfo />
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<Switch
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style={styles.switch}
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trackColor={{ false: "#767577", true: "#81b0ff" }}
thumbColor={true ? "#f5dd4b" : "#f4f3f4"}
ios_backgroundColor="#3e3e3e"
onValueChange={toggleUnits}
value={isKM}
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/>
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<View style={styles.controls} >
<Button
title="Jet"
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onPress={() => {
Trips.co2Rate = 285.0;
Trips.CO2Effect = "carbon burden";
Alert.alert('Jet Fuel Selected \n 285 g / passenger / km')}
}
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/>
<Button
title="Gasoline"
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onPress={() => {
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Trips.co2Rate = 255.0;
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Trips.CO2Effect = "carbon burden";
Alert.alert('Gasoline Selected \n 255 g for driver \n only passenger / km')}
}
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/>
<Button
title="Food"
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onPress={() => {
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Trips.co2Rate = -255.0;
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Trips.CO2Effect = "carbon relief";
Alert.alert('Savings vs Gasoline Selected')}
}
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/>
</View>
<TextInput
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style={styles.input}
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returnKeyType={'done'}
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onChangeText={onChangeNumber}
value={number}
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placeholder={Trips.co2Rate.toString()}
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keyboardType="numeric"
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/>
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</View>
);
}
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const styles = StyleSheet.create({
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switch: {
marginVertical: 20,
},
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container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
},
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controls: {
marginVertical: 20,
width: "80%",
flexDirection: 'row',
justifyContent: "space-between",
},
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title: {
fontSize: 20,
fontWeight: 'bold',
},
separator: {
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marginVertical: 10,
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height: 1,
width: '80%',
},
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input: {
height: 40,
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margin: 30,
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borderWidth: 1,
padding: 10,
},
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});