577 lines
19 KiB
JavaScript
577 lines
19 KiB
JavaScript
// Pressure v2.1.2 | Created By Stuart Yamartino | MIT License | 2015 - 2017
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;(function(root, factory) {
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if (typeof define === 'function' && define.amd) {
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define([], factory);
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} else if (typeof exports === 'object') {
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module.exports = factory();
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} else {
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root.Pressure = factory();
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}
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}(this, function() {
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'use strict';
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
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function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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//--------------------- Public API Section ---------------------//
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// this is the Pressure Object, this is the only object that is accessible to the end user
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// only the methods in this object can be called, making it the "public api"
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var Pressure = {
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// targets any device with Force or 3D Touch
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set: function set(selector, closure, options) {
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loopPressureElements(selector, closure, options);
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},
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// set configuration options for global config
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config: function config(options) {
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Config.set(options);
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},
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// the map method allows for interpolating a value from one range of values to another
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// example from the Arduino documentation: https://www.arduino.cc/en/Reference/Map
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map: function map(x, in_min, in_max, out_min, out_max) {
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return _map.apply(null, arguments);
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}
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};
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var Element = function () {
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function Element(el, block, options) {
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_classCallCheck(this, Element);
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this.routeEvents(el, block, options);
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this.preventSelect(el, options);
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}
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_createClass(Element, [{
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key: 'routeEvents',
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value: function routeEvents(el, block, options) {
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var type = Config.get('only', options);
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// for devices that support pointer events
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if (supportsPointer && (type === 'pointer' || type === null)) {
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this.adapter = new AdapterPointer(el, block, options).bindEvents();
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}
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// for devices that support 3D Touch
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else if (supportsTouch && (type === 'touch' || type === null)) {
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this.adapter = new Adapter3DTouch(el, block, options).bindEvents();
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}
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// for devices that support Force Touch
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else if (supportsMouse && (type === 'mouse' || type === null)) {
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this.adapter = new AdapterForceTouch(el, block, options).bindEvents();
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}
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// unsupported if it is requesting a type and your browser is of other type
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else {
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this.adapter = new Adapter(el, block).bindUnsupportedEvent();
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}
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}
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// prevent the default action of text selection, "peak & pop", and force touch special feature
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}, {
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key: 'preventSelect',
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value: function preventSelect(el, options) {
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if (Config.get('preventSelect', options)) {
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el.style.webkitTouchCallout = "none";
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el.style.webkitUserSelect = "none";
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el.style.khtmlUserSelect = "none";
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el.style.MozUserSelect = "none";
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el.style.msUserSelect = "none";
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el.style.userSelect = "none";
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}
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}
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}]);
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return Element;
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}();
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/*
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This is the base adapter from which all the other adapters extend.
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*/
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var Adapter = function () {
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function Adapter(el, block, options) {
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_classCallCheck(this, Adapter);
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this.el = el;
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this.block = block;
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this.options = options;
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this.pressed = false;
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this.deepPressed = false;
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this.nativeSupport = false;
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this.runningPolyfill = false;
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this.runKey = Math.random();
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}
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_createClass(Adapter, [{
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key: 'setPressed',
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value: function setPressed(boolean) {
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this.pressed = boolean;
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}
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}, {
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key: 'setDeepPressed',
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value: function setDeepPressed(boolean) {
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this.deepPressed = boolean;
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}
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}, {
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key: 'isPressed',
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value: function isPressed() {
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return this.pressed;
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}
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}, {
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key: 'isDeepPressed',
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value: function isDeepPressed() {
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return this.deepPressed;
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}
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}, {
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key: 'add',
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value: function add(event, set) {
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this.el.addEventListener(event, set, false);
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}
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}, {
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key: 'runClosure',
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value: function runClosure(method) {
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if (method in this.block) {
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// call the closure method and apply nth arguments if they exist
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this.block[method].apply(this.el, Array.prototype.slice.call(arguments, 1));
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}
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}
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}, {
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key: 'fail',
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value: function fail(event, runKey) {
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if (Config.get('polyfill', this.options)) {
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if (this.runKey === runKey) {
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this.runPolyfill(event);
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}
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} else {
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this.runClosure('unsupported', event);
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}
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}
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}, {
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key: 'bindUnsupportedEvent',
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value: function bindUnsupportedEvent() {
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var _this = this;
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this.add(supportsTouch ? 'touchstart' : 'mousedown', function (event) {
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return _this.runClosure('unsupported', event);
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});
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}
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}, {
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key: '_startPress',
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value: function _startPress(event) {
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if (this.isPressed() === false) {
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this.runningPolyfill = false;
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this.setPressed(true);
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this.runClosure('start', event);
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}
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}
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}, {
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key: '_startDeepPress',
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value: function _startDeepPress(event) {
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if (this.isPressed() && this.isDeepPressed() === false) {
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this.setDeepPressed(true);
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this.runClosure('startDeepPress', event);
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}
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}
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}, {
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key: '_changePress',
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value: function _changePress(force, event) {
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this.nativeSupport = true;
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this.runClosure('change', force, event);
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}
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}, {
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key: '_endDeepPress',
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value: function _endDeepPress() {
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if (this.isPressed() && this.isDeepPressed()) {
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this.setDeepPressed(false);
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this.runClosure('endDeepPress');
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}
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}
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}, {
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key: '_endPress',
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value: function _endPress() {
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if (this.runningPolyfill === false) {
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if (this.isPressed()) {
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this._endDeepPress();
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this.setPressed(false);
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this.runClosure('end');
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}
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this.runKey = Math.random();
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this.nativeSupport = false;
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} else {
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this.setPressed(false);
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}
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}
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}, {
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key: 'deepPress',
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value: function deepPress(force, event) {
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force >= 0.5 ? this._startDeepPress(event) : this._endDeepPress();
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}
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}, {
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key: 'runPolyfill',
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value: function runPolyfill(event) {
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this.increment = Config.get('polyfillSpeedUp', this.options) === 0 ? 1 : 10 / Config.get('polyfillSpeedUp', this.options);
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this.decrement = Config.get('polyfillSpeedDown', this.options) === 0 ? 1 : 10 / Config.get('polyfillSpeedDown', this.options);
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this.setPressed(true);
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this.runClosure('start', event);
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if (this.runningPolyfill === false) {
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this.loopPolyfillForce(0, event);
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}
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}
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}, {
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key: 'loopPolyfillForce',
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value: function loopPolyfillForce(force, event) {
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if (this.nativeSupport === false) {
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if (this.isPressed()) {
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this.runningPolyfill = true;
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force = force + this.increment > 1 ? 1 : force + this.increment;
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this.runClosure('change', force, event);
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this.deepPress(force, event);
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setTimeout(this.loopPolyfillForce.bind(this, force, event), 10);
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} else {
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force = force - this.decrement < 0 ? 0 : force - this.decrement;
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if (force < 0.5 && this.isDeepPressed()) {
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this.setDeepPressed(false);
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this.runClosure('endDeepPress');
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}
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if (force === 0) {
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this.runningPolyfill = false;
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this.setPressed(true);
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this._endPress();
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} else {
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this.runClosure('change', force, event);
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this.deepPress(force, event);
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setTimeout(this.loopPolyfillForce.bind(this, force, event), 10);
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}
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}
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}
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}
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}]);
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return Adapter;
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}();
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/*
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This adapter is for Macs with Force Touch trackpads.
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*/
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var AdapterForceTouch = function (_Adapter) {
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_inherits(AdapterForceTouch, _Adapter);
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function AdapterForceTouch(el, block, options) {
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_classCallCheck(this, AdapterForceTouch);
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return _possibleConstructorReturn(this, (AdapterForceTouch.__proto__ || Object.getPrototypeOf(AdapterForceTouch)).call(this, el, block, options));
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}
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_createClass(AdapterForceTouch, [{
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key: 'bindEvents',
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value: function bindEvents() {
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this.add('webkitmouseforcewillbegin', this._startPress.bind(this));
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this.add('mousedown', this.support.bind(this));
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this.add('webkitmouseforcechanged', this.change.bind(this));
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this.add('webkitmouseforcedown', this._startDeepPress.bind(this));
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this.add('webkitmouseforceup', this._endDeepPress.bind(this));
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this.add('mouseleave', this._endPress.bind(this));
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this.add('mouseup', this._endPress.bind(this));
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}
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}, {
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key: 'support',
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value: function support(event) {
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if (this.isPressed() === false) {
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this.fail(event, this.runKey);
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}
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}
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}, {
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key: 'change',
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value: function change(event) {
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if (this.isPressed() && event.webkitForce > 0) {
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this._changePress(this.normalizeForce(event.webkitForce), event);
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}
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}
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// make the force the standard 0 to 1 scale and not the 1 to 3 scale
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}, {
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key: 'normalizeForce',
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value: function normalizeForce(force) {
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return this.reachOne(_map(force, 1, 3, 0, 1));
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}
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// if the force value is above 0.995 set the force to 1
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}, {
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key: 'reachOne',
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value: function reachOne(force) {
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return force > 0.995 ? 1 : force;
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}
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}]);
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return AdapterForceTouch;
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}(Adapter);
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/*
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This adapter is more mobile devices that support 3D Touch.
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*/
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var Adapter3DTouch = function (_Adapter2) {
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_inherits(Adapter3DTouch, _Adapter2);
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function Adapter3DTouch(el, block, options) {
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_classCallCheck(this, Adapter3DTouch);
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return _possibleConstructorReturn(this, (Adapter3DTouch.__proto__ || Object.getPrototypeOf(Adapter3DTouch)).call(this, el, block, options));
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}
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_createClass(Adapter3DTouch, [{
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key: 'bindEvents',
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value: function bindEvents() {
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if (supportsTouchForceChange) {
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this.add('touchforcechange', this.start.bind(this));
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this.add('touchstart', this.support.bind(this, 0));
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this.add('touchend', this._endPress.bind(this));
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} else {
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this.add('touchstart', this.startLegacy.bind(this));
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this.add('touchend', this._endPress.bind(this));
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}
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}
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}, {
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key: 'start',
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value: function start(event) {
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if (event.touches.length > 0) {
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this._startPress(event);
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this.touch = this.selectTouch(event);
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if (this.touch) {
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this._changePress(this.touch.force, event);
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}
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}
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}
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}, {
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key: 'support',
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value: function support(iter, event) {
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var runKey = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this.runKey;
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if (this.isPressed() === false) {
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if (iter <= 6) {
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iter++;
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setTimeout(this.support.bind(this, iter, event, runKey), 10);
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} else {
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this.fail(event, runKey);
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}
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}
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}
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}, {
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key: 'startLegacy',
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value: function startLegacy(event) {
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this.initialForce = event.touches[0].force;
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this.supportLegacy(0, event, this.runKey, this.initialForce);
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}
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// this checks up to 6 times on a touch to see if the touch can read a force value
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// if the force value has changed it means the device supports pressure
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// more info from this issue https://github.com/yamartino/pressure/issues/15
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}, {
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key: 'supportLegacy',
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value: function supportLegacy(iter, event, runKey, force) {
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if (force !== this.initialForce) {
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this._startPress(event);
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this.loopForce(event);
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} else if (iter <= 6) {
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iter++;
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setTimeout(this.supportLegacy.bind(this, iter, event, runKey, force), 10);
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} else {
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this.fail(event, runKey);
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}
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}
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}, {
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key: 'loopForce',
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value: function loopForce(event) {
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if (this.isPressed()) {
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this.touch = this.selectTouch(event);
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setTimeout(this.loopForce.bind(this, event), 10);
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this._changePress(this.touch.force, event);
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}
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}
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// link up the touch point to the correct element, this is to support multitouch
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}, {
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key: 'selectTouch',
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value: function selectTouch(event) {
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if (event.touches.length === 1) {
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return this.returnTouch(event.touches[0], event);
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} else {
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for (var i = 0; i < event.touches.length; i++) {
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// if the target press is on this element
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if (event.touches[i].target === this.el || this.el.contains(event.touches[i].target)) {
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return this.returnTouch(event.touches[i], event);
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}
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}
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}
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}
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// return the touch and run a start or end for deep press
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}, {
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key: 'returnTouch',
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value: function returnTouch(touch, event) {
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this.deepPress(touch.force, event);
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return touch;
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}
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}]);
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return Adapter3DTouch;
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}(Adapter);
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/*
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This adapter is for devices that support pointer events.
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*/
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var AdapterPointer = function (_Adapter3) {
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_inherits(AdapterPointer, _Adapter3);
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function AdapterPointer(el, block, options) {
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_classCallCheck(this, AdapterPointer);
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return _possibleConstructorReturn(this, (AdapterPointer.__proto__ || Object.getPrototypeOf(AdapterPointer)).call(this, el, block, options));
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}
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_createClass(AdapterPointer, [{
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key: 'bindEvents',
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value: function bindEvents() {
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this.add('pointerdown', this.support.bind(this));
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this.add('pointermove', this.change.bind(this));
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this.add('pointerup', this._endPress.bind(this));
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this.add('pointerleave', this._endPress.bind(this));
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}
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}, {
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key: 'support',
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value: function support(event) {
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if (this.isPressed() === false) {
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if (event.pressure === 0 || event.pressure === 0.5 || event.pressure > 1) {
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this.fail(event, this.runKey);
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} else {
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this._startPress(event);
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this._changePress(event.pressure, event);
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}
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}
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}
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}, {
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key: 'change',
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value: function change(event) {
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if (this.isPressed() && event.pressure > 0 && event.pressure !== 0.5) {
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this._changePress(event.pressure, event);
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this.deepPress(event.pressure, event);
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}
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}
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}]);
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return AdapterPointer;
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}(Adapter);
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// This class holds the states of the the Pressure config
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var Config = {
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// 'false' will make polyfill not run when pressure is not supported and the 'unsupported' method will be called
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polyfill: true,
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// milliseconds it takes to go from 0 to 1 for the polyfill
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polyfillSpeedUp: 1000,
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// milliseconds it takes to go from 1 to 0 for the polyfill
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polyfillSpeedDown: 0,
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// 'true' prevents the selecting of text and images via css properties
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preventSelect: true,
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// 'touch', 'mouse', or 'pointer' will make it run only on that type of device
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only: null,
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// this will get the correct config / option settings for the current pressure check
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get: function get(option, options) {
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return options.hasOwnProperty(option) ? options[option] : this[option];
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},
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// this will set the global configs
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set: function set(options) {
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for (var k in options) {
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if (options.hasOwnProperty(k) && this.hasOwnProperty(k) && k != 'get' && k != 'set') {
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this[k] = options[k];
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}
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}
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}
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};
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//------------------- Helpers -------------------//
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// accepts jQuery object, node list, string selector, then called a setup for each element
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var loopPressureElements = function loopPressureElements(selector, closure) {
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var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
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// if a string is passed in as an element
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if (typeof selector === 'string' || selector instanceof String) {
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var elements = document.querySelectorAll(selector);
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for (var i = 0; i < elements.length; i++) {
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new Element(elements[i], closure, options);
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}
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// if a single element object is passed in
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} else if (isElement(selector)) {
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new Element(selector, closure, options);
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// if a node list is passed in ex. jQuery $() object
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} else {
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for (var i = 0; i < selector.length; i++) {
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new Element(selector[i], closure, options);
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}
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}
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};
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//Returns true if it is a DOM element
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var isElement = function isElement(o) {
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return (typeof HTMLElement === 'undefined' ? 'undefined' : _typeof(HTMLElement)) === "object" ? o instanceof HTMLElement : //DOM2
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o && (typeof o === 'undefined' ? 'undefined' : _typeof(o)) === "object" && o !== null && o.nodeType === 1 && typeof o.nodeName === "string";
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};
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// the map method allows for interpolating a value from one range of values to another
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// example from the Arduino documentation: https://www.arduino.cc/en/Reference/Map
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var _map = function _map(x, in_min, in_max, out_min, out_max) {
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return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
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};
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var supportsMouse = false;
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var supportsTouch = false;
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var supportsPointer = false;
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var supportsTouchForce = false;
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var supportsTouchForceChange = false;
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if (typeof window !== 'undefined') {
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// only attempt to assign these in a browser environment.
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// on the server, this is a no-op, like the rest of the library
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if (typeof Touch !== 'undefined') {
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// In Android, new Touch requires arguments.
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try {
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if (Touch.prototype.hasOwnProperty('force') || 'force' in new Touch()) {
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supportsTouchForce = true;
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}
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} catch (e) {}
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}
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supportsTouch = 'ontouchstart' in window.document && supportsTouchForce;
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supportsMouse = 'onmousemove' in window.document && !supportsTouch;
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supportsPointer = 'onpointermove' in window.document;
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supportsTouchForceChange = 'ontouchforcechange' in window.document;
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}
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return Pressure;
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}));
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