Forked from tanner-west/med-9797f5f7b9b4_gesture-demo.tsx
Created
November 13, 2023 13:29
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import React, { useState } from "react"; | |
import { SafeAreaView, Text } from "react-native"; | |
import { | |
Gesture, | |
GestureDetector, | |
GestureHandlerRootView, | |
} from "react-native-gesture-handler"; | |
export default function GestureDemo() { | |
const [tGestureStart, setTGestureStart] = useState<undefined | string>(); | |
const [tGestureMove, setTGestureMove] = useState<undefined | string>(); | |
const [tGestureUpdate, setTGestureUpdate] = useState<undefined | string>(); | |
const [tGestureEnd, setTGestureEnd] = useState<undefined | string>(); | |
const pan = Gesture.Pan() | |
.onStart((g) => { | |
// Start gesture looks like this | |
// { | |
// "absoluteX": 178, | |
// "absoluteY": 484, | |
// "handlerTag": 2, | |
// "numberOfPointers": 1, | |
// "oldState": 2, | |
// "state": 4, | |
// "target": 115, | |
// "translationX": -4.3333282470703125, | |
// "translationY": 0, | |
// "velocityX": -172.0102558333448, | |
// "velocityY": 0, | |
// "x": 178, | |
// "y": 484, | |
// } | |
setTGestureStart(`${Math.round(g.x)}, ${Math.round(g.y)}`); | |
}) | |
.onTouchesMove((g) => { | |
// Move gesture looks like this | |
// { | |
// "allTouches": Array [ | |
// { | |
// "absoluteX": 123.33332824707031, | |
// "absoluteY": 449, | |
// "id": 0, | |
// "x": 123.33332824707031, | |
// "y": 449, | |
// }, | |
// ], | |
// "changedTouches": Array [ | |
// { | |
// "absoluteX": 123.33332824707031, | |
// "absoluteY": 449, | |
// "id": 0, | |
// "x": 123.33332824707031, | |
// "y": 449, | |
// }, | |
// ], | |
// "eventType": 2, | |
// "handlerTag": 2, | |
// "numberOfTouches": 1, | |
// "state": 4, | |
// "target": 115, | |
// } | |
setTGestureMove( | |
`${Math.round(g.changedTouches[0].x)}, ${Math.round( | |
g.changedTouches[0].y | |
)}` | |
); | |
}) | |
.onUpdate((g) => { | |
// Update gesture looks like | |
// { | |
// "absoluteX": 229, | |
// "absoluteY": 400.3333282470703, | |
// "handlerTag": 2, | |
// "numberOfPointers": 1, | |
// "state": 4, | |
// "target": 115, | |
// "translationX": 0, | |
// "translationY": 1.6666717529296875, | |
// "velocityX": 0, | |
// "velocityY": 24.111687246989227, | |
// "x": 229, | |
// "y": 400.3333282470703, | |
// } | |
setTGestureUpdate(`${Math.round(g.x)}, ${Math.round(g.y)}`); | |
}) | |
.onEnd((g) => { | |
// End gesture looks like this | |
// { | |
// "absoluteX": 213.3333282470703, | |
// "absoluteY": 542.6666564941406, | |
// "handlerTag": 2, | |
// "numberOfPointers": 0, | |
// "oldState": 4, | |
// "state": 5, | |
// "target": 115, | |
// "translationX": -66, | |
// "translationY": 172, | |
// "velocityX": -71.28075141720757, | |
// "velocityY": 567.0058445795321, | |
// "x": 213.3333282470703, | |
// "y": 542.6666564941406, | |
// } | |
setTGestureEnd(`${Math.round(g.x)}, ${Math.round(g.y)}`); | |
}); | |
return ( | |
<GestureHandlerRootView style={{ flex: 1 }}> | |
<GestureDetector gesture={pan}> | |
<SafeAreaView style={{ flex: 1, backgroundColor: "black" }}> | |
<Text | |
style={{ color: "white", fontSize: 24 }} | |
>{`Gesture started at: ${tGestureStart}`}</Text> | |
<Text | |
style={{ color: "white", fontSize: 24 }} | |
>{`Gesture moved to: ${tGestureMove}`}</Text> | |
<Text | |
style={{ color: "white", fontSize: 24 }} | |
>{`Gesture updated to: ${tGestureUpdate}`}</Text> | |
<Text | |
style={{ color: "white", fontSize: 24 }} | |
>{`Gesture ended at: ${tGestureEnd}`}</Text> | |
</SafeAreaView> | |
</GestureDetector> | |
</GestureHandlerRootView> | |
); | |
} |
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