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@poeticode/scroll-swipe

v0.1.2

Published

a lightweight Events API for detecting scroll and touch events based on custom sensitivity

Downloads

11

Readme

scroll-swipe :mouse2:

NPM

npm install scroll-swipe

2-step API for providing scroll and touch event direction handlers

UMD-wrapped for use with node/browser and with or without bundlers

Example setup can be found here

You can run the example locally:
npm install
npm start => localhost:3333

Instantiate

var ss = new ScrollSwipe({
	target: document, // Element must be a single dom-node per ScrollSwipe Instance
	scrollSensitivity: 0, // The lower the number, the more sensitive
	touchSensitivity: 0, // The lower the number, the more senitive
	scrollPreventDefault: true, // prevent default option for scroll events
	touchPreventDefault: true, // prevent default option for touch events
	scrollCb: scrollCb,  // The action you wish to perform when a scroll reacts (details below)
	touchCb: touchCb, // The action you wish to perform when a touch reacts (details below)
	dragCb: dragCb // gives you the delta x/y of touch events. You'll also need touchCb to be set.
});

Scroll API && Touch API

//Example callbacks for the ScrollSwipe instance above ^^

/**
 * @param  {Object} data - returns the following
 * startEvent - Event that triggered this action
 * lastEvent - Last Event at the end of action
 * scrollPending - state of instance's scrollPending property (will always come back true after a successful event)
 * direction - 'VERTICAL' || 'HORIZONTAL' for mapping vertical/horizontal actions from the event;
 * intent - 0 || 1  for mapping up/down && left/right actions from the event
 */

function scrollCb(data) {
    //do animations, state changes/eval or something async, then open the listener back up.
	ss.listen();
}

function touchCb(data) {
    //the exact same behavior as scrollCb ^^ applies
    ss.listen();
}

/**
 * @param  {Object} data - returns the following
 * x - delta X
 * y - delta Y
 */
function dragCb(data) {
	// same behavior, except different data
	// and you shouldn't call ss.listen(), else touchCb won't fire.
}

// kill scroll event listeners for an instance with ss.killScroll();
// kill touch event listeners for an instance with ss.killTouch();
// kill all event listeners for an instance with ss.killAll();