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react-native-touch-tracker

v1.2.3

Published

tracks all touches in react native and has utilities to create outside click functionality

Downloads

698

Readme

About The Project

For when you need to make "click away" or "click outside" interactions in react native.

This package contains a provider that publishes all touch events to consuming hooks and has utilities to figure out if a user clicked inside a node. And is written in Typescript.

Getting Started

Installation

npm i react-native-touch-tracker

or

yarn add react-native-touch-tracker

Add the provider

Place the provider as high as possible in your tree probably in <App />

import { TouchTrackerProvider } from "react-native-touch-tracker"; 

export default function App(): JSX.Element {
  return (
    <TouchTrackerProvider style={{ flex: 1 }}>
    ...
    </TouchTrackerProvider>
  );
}

Since <TouchTrackerProvider /> renders a view you probably need to add some style like flex: 1 to keep it from messing up your style.

Usage

Place the hook in a component that needs to be aware of all touches:

import { useTouchTracker } from "react-native-touch-tracker"; 
import { Button, GestureResponderEvent } from "react-native";

function TouchAwareComponent() {
  useTouchTracker((evt: GestureResponderEvent) => {
    console.log(evt.target); // gives all nodes user touches
  });

  return <Button onPress={() => 0} title="Press it" />;
}

Utilities

You can make use of the utilities to detect if a click was inside or outside

import { useTouchTracker, isReactFiberComponentType, isNodeDescendantOf } from "react-native-touch-tracker"; 

function TouchAwareComponent() {
  const ref = useRef<Button>(null);

  useTouchTracker((evt: GestureResponderEvent) => {
    console.log(evt.target); // gives all nodes user touches

    if (
      !isReactFiberComponentType(ref.current) ||
      !isReactFiberComponentType(evt.target)
    ) {
      return; // components should have the correct properties and be casted to ReactNativeFiberHostComponentƒ
    }

    if (isNodeDescendantOf(ref.current, evt.target)) {
      console.log("inside");
    } else {
      console.log("outside");
    }
  });

  return <Button ref={ref} onPress={() => 0} title="Press it" />;
}

License

Distributed under the unlicense License. See LICENSE for more information.