ReactJS / HammerJS integration. Support touch events in your React app

React-HammerJS

ReactJS / HammerJS integration. Support touch events in your React app.

If you’re looking for native tap event handling in ReactJS, check out my react-tappable package.

Installation

The easiest way to use React-HammerJS is to install it from NPM and include it in your own React build process (using Browserify, etc).

You can also use the standalone build by including dist/hammer.js in your page. If you use this, make sure you have already included React, and it is available as a global variable.

npm install react-hammerjs --save

Usage

React-HammerJS wraps a React component, binding Hammer events to it so it can fire the handlers specified.

Properties

Event Listener properties

onTap
onDoubleTap
onPan
onPanCancel
onPanEnd
onPanStart
onPinch
onPinchCancel
onPinchEnd
onPinchIn
onPinchOut
onPinchStart
onPress
onPressUp
onRotate
onRotateCancel
onRotateEnd
onRotateMove
onRotateStart
onSwipe
action - like the onTap event handler but will also be fired onPress.

Behavior properties

direction - (string) 'DIRECTION_ALL' | 'DIRECTION_HORIZONTAL' | 'DIRECTION_VERTICAL'. Used to restrict the pan and swipe direction. These string values may also work: 'DIRECTION_NONE' |'DIRECTION_LEFT' | 'DIRECTION_RIGHT' | 'DIRECTION_UP' | 'DIRECTION_DOWN'.
options - can be used to configure the Hammer manager. These properties will be merged with the default ones.

Example

var Hammer = require('react-hammerjs');

// Default options
<Hammer onTap={handleTap} onSwipe={handleSwipe}><div>Tap Me</div></Hammer>

// Custom options
var options = {
    touchAction:'compute',
    recognizers: {
        tap: {
            time: 600,
            threshold: 100
        }
    }
};

<Hammer onTap={handleTap} options={options}><div>Tap Me</div></Hammer>

Disabled Events

As a default, the pinch and rotate events are disabled in hammer.js, as they would make actions on an element “blocking”. You may enable these events using the options object which is a attribute on the react <Hammer> element.

For example, to activate the pinch event on a canvas element:

<Hammer
    onPinch={handlePinch}
    options={{
       recognizers: {
          pinch: { enable: true }
       }
    }}>
    <canvas></canvas>
</Hammer>

Disabled events are detailed in the hammer.js api documentation:

Download Details:

Author: JedWatson

Source Code: https://github.com/JedWatson/react-hammerjs

#react #reactjs #javascript