/*!
* Name : Just Another Parallax [Jarallax]
* Version : 1.12.3
* Author : nK <https://nkdev.info>
* GitHub : https://github.com/nk-o/jarallax
*/
/******/ (function(modules) { // webpackBootstrap
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/******/ return installedModules[moduleId].exports;
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/******/ i: moduleId,
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/******/ __webpack_require__.c = installedModules;
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/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
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/******/ ([
/* 0 */,
/* 1 */,
/* 2 */
/***/ (function(module, exports) {
module.exports = function (callback) {
if (document.readyState === 'complete' || document.readyState === 'interactive') {
// Already ready or interactive, execute callback
callback.call();
} else if (document.attachEvent) {
// Old browsers
document.attachEvent('onreadystatechange', function () {
if (document.readyState === 'interactive') callback.call();
});
} else if (document.addEventListener) {
// Modern browsers
document.addEventListener('DOMContentLoaded', callback);
}
};
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
/* WEBPACK VAR INJECTION */(function(global) {var win;
if (typeof window !== "undefined") {
win = window;
} else if (typeof global !== "undefined") {
win = global;
} else if (typeof self !== "undefined") {
win = self;
} else {
win = {};
}
module.exports = win;
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(4)))
/***/ }),
/* 4 */
/***/ (function(module, exports) {
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
var g; // This works in non-strict mode
g = function () {
return this;
}();
try {
// This works if eval is allowed (see CSP)
g = g || new Function("return this")();
} catch (e) {
// This works if the window reference is available
if ((typeof window === "undefined" ? "undefined" : _typeof(window)) === "object") g = window;
} // g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/* 5 */,
/* 6 */,
/* 7 */,
/* 8 */,
/* 9 */,
/* 10 */
/***/ (function(module, exports, __webpack_require__) {
module.exports = __webpack_require__(11);
/***/ }),
/* 11 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var lite_ready__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(2);
/* harmony import */ var lite_ready__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(lite_ready__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var global__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(3);
/* harmony import */ var global__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global__WEBPACK_IMPORTED_MODULE_1__);
/* harmony import */ var _jarallax_esm__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(12);
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
// no conflict
var oldPlugin = global__WEBPACK_IMPORTED_MODULE_1__["window"].jarallax;
global__WEBPACK_IMPORTED_MODULE_1__["window"].jarallax = _jarallax_esm__WEBPACK_IMPORTED_MODULE_2__["default"];
global__WEBPACK_IMPORTED_MODULE_1__["window"].jarallax.noConflict = function () {
global__WEBPACK_IMPORTED_MODULE_1__["window"].jarallax = oldPlugin;
return this;
}; // jQuery support
if ('undefined' !== typeof global__WEBPACK_IMPORTED_MODULE_1__["jQuery"]) {
var jQueryPlugin = function jQueryPlugin() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
Array.prototype.unshift.call(args, this);
var res = _jarallax_esm__WEBPACK_IMPORTED_MODULE_2__["default"].apply(global__WEBPACK_IMPORTED_MODULE_1__["window"], args);
return 'object' !== _typeof(res) ? res : this;
};
jQueryPlugin.constructor = _jarallax_esm__WEBPACK_IMPORTED_MODULE_2__["default"].constructor; // no conflict
var oldJqPlugin = global__WEBPACK_IMPORTED_MODULE_1__["jQuery"].fn.jarallax;
global__WEBPACK_IMPORTED_MODULE_1__["jQuery"].fn.jarallax = jQueryPlugin;
global__WEBPACK_IMPORTED_MODULE_1__["jQuery"].fn.jarallax.noConflict = function () {
global__WEBPACK_IMPORTED_MODULE_1__["jQuery"].fn.jarallax = oldJqPlugin;
return this;
};
} // data-jarallax initialization
lite_ready__WEBPACK_IMPORTED_MODULE_0___default()(function () {
Object(_jarallax_esm__WEBPACK_IMPORTED_MODULE_2__["default"])(document.querySelectorAll('[data-jarallax]'));
});
/***/ }),
/* 12 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var lite_ready__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(2);
/* harmony import */ var lite_ready__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(lite_ready__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var global__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(3);
/* harmony import */ var global__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global__WEBPACK_IMPORTED_MODULE_1__);
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var navigator = global__WEBPACK_IMPORTED_MODULE_1__["window"].navigator;
var isIE = -1 < navigator.userAgent.indexOf('MSIE ') || -1 < navigator.userAgent.indexOf('Trident/') || -1 < navigator.userAgent.indexOf('Edge/');
var isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
var supportTransform = function () {
var prefixes = 'transform WebkitTransform MozTransform'.split(' ');
var div = document.createElement('div');
for (var i = 0; i < prefixes.length; i += 1) {
if (div && div.style[prefixes[i]] !== undefined) {
return prefixes[i];
}
}
return false;
}();
var $deviceHelper;
/**
* The most popular mobile browsers changes height after page scroll and this generates image jumping.
* We can fix it using this workaround with vh units.
*/
function getDeviceHeight() {
if (!$deviceHelper && document.body) {
$deviceHelper = document.createElement('div');
$deviceHelper.style.cssText = 'position: fixed; top: -9999px; left: 0; height: 100vh; width: 0;';
document.body.appendChild($deviceHelper);
}
return ($deviceHelper ? $deviceHelper.clientHeight : 0) || global__WEBPACK_IMPORTED_MODULE_1__["window"].innerHeight || document.documentElement.clientHeight;
} // Window height data
var wndH;
function updateWndVars() {
if (isMobile) {
wndH = getDeviceHeight();
} else {
wndH = global__WEBPACK_IMPORTED_MODULE_1__["window"].innerHeight || document.documentElement.clientHeight;
}
}
updateWndVars();
global__WEBPACK_IMPORTED_MODULE_1__["window"].addEventListener('resize', updateWndVars);
global__WEBPACK_IMPORTED_MODULE_1__["window"].addEventListener('orientationchange', updateWndVars);
global__WEBPACK_IMPORTED_MODULE_1__["window"].addEventListener('load', updateWndVars);
lite_ready__WEBPACK_IMPORTED_MODULE_0___default()(function () {
updateWndVars({
type: 'dom-loaded'
});
}); // list with all jarallax instances
// need to render all in one scroll/resize event
var jarallaxList = []; // get all parents of the element.
function getParents(elem) {
var parents = [];
while (null !== elem.parentElement) {
elem = elem.parentElement;
if (1 === elem.nodeType) {
parents.push(elem);
}
}
return parents;
}
function updateParallax() {
if (!jarallaxList.length) {
return;
}
jarallaxList.forEach(function (data, k) {
var instance = data.instance,
oldData = data.oldData;
var clientRect = instance.$item.getBoundingClientRect();
var newData = {
width: clientRect.width,
height: clientRect.height,
top: clientRect.top,
bottom: clientRect.bottom,
wndW: global__WEBPACK_IMPORTED_MODULE_1__["window"].innerWidth,
wndH: wndH
};
var isResized = !oldData || oldData.wndW !== newData.wndW || oldData.wndH !== newData.wndH || oldData.width !== newData.width || oldData.height !== newData.height;
var isScrolled = isResized || !oldData || oldData.top !== newData.top || oldData.bottom !== newData.bottom;
jarallaxList[k].oldData = newData;
if (isResized) {
instance.onResize();
}
if (isScrolled) {
instance.onScroll();
}
});
global__WEBPACK_IMPORTED_MODULE_1__["window"].requestAnimationFrame(updateParallax);
}
var instanceID = 0; // Jarallax class
var Jarallax = /*#__PURE__*/function () {
function Jarallax(item, userOptions) {
_classCallCheck(this, Jarallax);
var self = this;
self.instanceID = instanceID;
instanceID += 1;
self.$item = item;
self.defaults = {
type: 'scroll',
// type of parallax: scroll, scale, opacity, scale-opacity, scroll-opacity
speed: 0.5,
// supported value from -1 to 2
imgSrc: null,
imgElement: '.jarallax-img',
imgSize: 'cover',
imgPosition: '50% 50%',
imgRepeat: 'no-repeat',
// supported only for background, not for <img> tag
keepImg: false,
// keep <img> tag in it's default place
elementInViewport: null,
zIndex: -100,
disableParallax: false,
disableVideo: false,
// video
videoSrc: null,
videoStartTime: 0,
videoEndTime: 0,
videoVolume: 0,
videoLoop: true,
videoPlayOnlyVisible: true,
videoLazyLoading: true,
// events
onScroll: null,
// function(calculations) {}
onInit: null,
// function() {}
onDestroy: null,
// function() {}
onCoverImage: null // function() {}
}; // prepare data-options
var dataOptions = self.$item.dataset || {};
var pureDataOptions = {};
Object.keys(dataOptions).forEach(function (key) {
var loweCaseOption = key.substr(0, 1).toLowerCase() + key.substr(1);
if (loweCaseOption && 'undefined' !== typeof self.defaults[loweCaseOption]) {
pureDataOptions[loweCaseOption] = dataOptions[key];
}
});
self.options = self.extend({}, self.defaults, pureDataOptions, userOptions);
self.pureOptions = self.extend({}, self.options); // prepare 'true' and 'false' strings to boolean
Object.keys(self.options).forEach(function (key) {
if ('true' === self.options[key]) {
self.options[key] = true;
} else if ('false' === self.options[key]) {
self.options[key] = false;
}
}); // fix speed option [-1.0, 2.0]
self.options.speed = Math.min(2, Math.max(-1, parseFloat(self.options.speed))); // prepare disableParallax callback
if ('string' === typeof self.options.disableParallax) {
self.options.disableParallax = new RegExp(self.options.disableParallax);
}
if (self.options.disableParallax instanceof RegExp) {
var disableParallaxRegexp = self.options.disableParallax;
self.options.disableParallax = function () {
return disableParallaxRegexp.test(navigator.userAgent);
};
}
if ('function' !== typeof self.options.disableParallax) {
self.options.disableParallax = function () {
return false;
};
} // prepare disableVideo callback
if ('string' === typeof self.options.disableVideo) {
self.options.disableVideo = new RegExp(self.options.disableVideo);
}
if (self.options.disableVideo instanceof RegExp) {
var disableVideoRegexp = self.options.disableVideo;
self.options.disableVideo = function () {
return disableVideoRegexp.test(navigator.userAgent);
};
}
if ('function' !== typeof self.options.disableVideo) {
self.options.disableVideo = function () {
return false;
};
} // custom element to check if parallax in viewport
var elementInVP = self.options.elementInViewport; // get first item from array
if (elementInVP && 'object' === _typeof(elementInVP) && 'undefined' !== typeof elementInVP.length) {
var _elementInVP = elementInVP;
var _elementInVP2 = _slicedToArray(_elementInVP, 1);
elementInVP = _elementInVP2[0];
} // check if dom element
if (!(elementInVP instanceof Element)) {
elementInVP = null;
}
self.options.elementInViewport = elementInVP;
self.image = {
src: self.options.imgSrc || null,
$container: null,
useImgTag: false,
// position fixed is needed for the most of browsers because absolute position have glitches
// on MacOS with smooth scroll there is a huge lags with absolute position - https://github.com/nk-o/jarallax/issues/75
// on mobile devices better scrolled with absolute position
position: /iPad|iPhone|iPod|Android/.test(navigator.userAgent) ? 'absolute' : 'fixed'
};
if (self.initImg() && self.canInitParallax()) {
self.init();
}
} // add styles to element
// eslint-disable-next-line class-methods-use-this
_createClass(Jarallax, [{
key: "css",
value: function css(el, styles) {
if ('string' === typeof styles) {
return global__WEBPACK_IMPORTED_MODULE_1__["window"].getComputedStyle(el).getPropertyValue(styles);
} // add transform property with vendor prefix
if (styles.transform && supportTransform) {
styles[supportTransform] = styles.transform;
}
Object.keys(styles).forEach(function (key) {
el.style[key] = styles[key];
});
return el;
} // Extend like jQuery.extend
// eslint-disable-next-line class-methods-use-this
}, {
key: "extend",
value: function extend(out) {
for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
out = out || {};
Object.keys(args).forEach(function (i) {
if (!args[i]) {
return;
}
Object.keys(args[i]).forEach(function (key) {
out[key] = args[i][key];
});
});
return out;
} // get window size and scroll position. Useful for extensions
// eslint-disable-next-line class-methods-use-this
}, {
key: "getWindowData",
value: function getWindowData() {
return {
width: global__WEBPACK_IMPORTED_MODULE_1__["window"].innerWidth || document.documentElement.clientWidth,
height: wndH,
y: document.documentElement.scrollTop
};
} // Jarallax functions
}, {
key: "initImg",
value: function initImg() {
var self = this; // find image element
var $imgElement = self.options.imgElement;
if ($imgElement && 'string' === typeof $imgElement) {
$imgElement = self.$item.querySelector($imgElement);
} // check if dom element
if (!($imgElement instanceof Element)) {
if (self.options.imgSrc) {
$imgElement = new Image();
$imgElement.src = self.options.imgSrc;
} else {
$imgElement = null;
}
}
if ($imgElement) {
if (self.options.keepImg) {
self.image.$item = $imgElement.cloneNode(true);
} else {
self.image.$item = $imgElement;
self.image.$itemParent = $imgElement.parentNode;
}
self.image.useImgTag = true;
} // true if there is img tag
if (self.image.$item) {
return true;
} // get image src
if (null === self.image.src) {
self.image.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7';
self.image.bgImage = self.css(self.$item, 'background-image');
}
return !(!self.image.bgImage || 'none' === self.image.bgImage);
}
}, {
key: "canInitParallax",
value: function canInitParallax() {
return supportTransform && !this.options.disableParallax();
}
}, {
key: "init",
value: function init() {
var self = this;
var containerStyles = {
position: 'absolute',
top: 0,
left: 0,
width: '100%',
height: '100%',
overflow: 'hidden'
};
var imageStyles = {
pointerEvents: 'none',
transformStyle: 'preserve-3d',
backfaceVisibility: 'hidden',
willChange: 'transform,opacity'
};
if (!self.options.keepImg) {
// save default user styles
var curStyle = self.$item.getAttribute('style');
if (curStyle) {
self.$item.setAttribute('data-jarallax-original-styles', curStyle);
}
if (self.image.useImgTag) {
var curImgStyle = self.image.$item.getAttribute('style');
if (curImgStyle) {
self.image.$item.setAttribute('data-jarallax-original-styles', curImgStyle);
}
}
} // set relative position and z-index to the parent
if ('static' === self.css(self.$item, 'position')) {
self.css(self.$item, {
position: 'relative'
});
}
if ('auto' === self.css(self.$item, 'z-index')) {
self.css(self.$item, {
zIndex: 0
});
} // container for parallax image
self.image.$container = document.createElement('div');
self.css(self.image.$container, containerStyles);
self.css(self.image.$container, {
'z-index': self.options.zIndex
}); // fix for IE https://github.com/nk-o/jarallax/issues/110
if (isIE) {
self.css(self.image.$container, {
opacity: 0.9999
});
}
self.image.$container.setAttribute('id', "jarallax-container-".concat(self.instanceID));
self.$item.appendChild(self.image.$container); // use img tag
if (self.image.useImgTag) {
imageStyles = self.extend({
'object-fit': self.options.imgSize,
'object-position': self.options.imgPosition,
// support for plugin https://github.com/bfred-it/object-fit-images
'font-family': "object-fit: ".concat(self.options.imgSize, "; object-position: ").concat(self.options.imgPosition, ";"),
'max-width': 'none'
}, containerStyles, imageStyles); // use div with background image
} else {
self.image.$item = document.createElement('div');
if (self.image.src) {
imageStyles = self.extend({
'background-position': self.options.imgPosition,
'background-size': self.options.imgSize,
'background-repeat': self.options.imgRepeat,
'background-image': self.image.bgImage || "url(\"".concat(self.image.src, "\")")
}, containerStyles, imageStyles);
}
}
if ('opacity' === self.options.type || 'scale' === self.options.type || 'scale-opacity' === self.options.type || 1 === self.options.speed) {
self.image.position = 'absolute';
} // 1. Check if one of parents have transform style (without this check, scroll transform will be inverted if used parallax with position fixed)
// discussion - https://github.com/nk-o/jarallax/issues/9
// 2. Check if parents have overflow scroll
if ('fixed' === self.image.position) {
var $parents = getParents(self.$item).filter(function (el) {
var styles = global__WEBPACK_IMPORTED_MODULE_1__["window"].getComputedStyle(el);
var parentTransform = styles['-webkit-transform'] || styles['-moz-transform'] || styles.transform;
var overflowRegex = /(auto|scroll)/;
return parentTransform && 'none' !== parentTransform || overflowRegex.test(styles.overflow + styles['overflow-y'] + styles['overflow-x']);
});
self.image.position = $parents.length ? 'absolute' : 'fixed';
} // add position to parallax block
imageStyles.position = self.image.position; // insert parallax image
self.css(self.image.$item, imageStyles);
self.image.$container.appendChild(self.image.$item); // set initial position and size
self.onResize();
self.onScroll(true); // call onInit event
if (self.options.onInit) {
self.options.onInit.call(self);
} // remove default user background
if ('none' !== self.css(self.$item, 'background-image')) {
self.css(self.$item, {
'background-image': 'none'
});
}
self.addToParallaxList();
} // add to parallax instances list
}, {
key: "addToParallaxList",
value: function addToParallaxList() {
jarallaxList.push({
instance: this
});
if (1 === jarallaxList.length) {
global__WEBPACK_IMPORTED_MODULE_1__["window"].requestAnimationFrame(updateParallax);
}
} // remove from parallax instances list
}, {
key: "removeFromParallaxList",
value: function removeFromParallaxList() {
var self = this;
jarallaxList.forEach(function (data, key) {
if (data.instance.instanceID === self.instanceID) {
jarallaxList.splice(key, 1);
}
});
}
}, {
key: "destroy",
value: function destroy() {
var self = this;
self.removeFromParallaxList(); // return styles on container as before jarallax init
var originalStylesTag = self.$item.getAttribute('data-jarallax-original-styles');
self.$item.removeAttribute('data-jarallax-original-styles'); // null occurs if there is no style tag before jarallax init
if (!originalStylesTag) {
self.$item.removeAttribute('style');
} else {
self.$item.setAttribute('style', originalStylesTag);
}
if (self.image.useImgTag) {
// return styles on img tag as before jarallax init
var originalStylesImgTag = self.image.$item.getAttribute('data-jarallax-original-styles');
self.image.$item.removeAttribute('data-jarallax-original-styles'); // null occurs if there is no style tag before jarallax init
if (!originalStylesImgTag) {
self.image.$item.removeAttribute('style');
} else {
self.image.$item.setAttribute('style', originalStylesTag);
} // move img tag to its default position
if (self.image.$itemParent) {
self.image.$itemParent.appendChild(self.image.$item);
}
} // remove additional dom elements
if (self.$clipStyles) {
self.$clipStyles.parentNode.removeChild(self.$clipStyles);
}
if (self.image.$container) {
self.image.$container.parentNode.removeChild(self.image.$container);
} // call onDestroy event
if (self.options.onDestroy) {
self.options.onDestroy.call(self);
} // delete jarallax from item
delete self.$item.jarallax;
} // it will remove some image overlapping
// overlapping occur due to an image position fixed inside absolute position element
}, {
key: "clipContainer",
value: function clipContainer() {
// needed only when background in fixed position
if ('fixed' !== this.image.position) {
return;
}
var self = this;
var rect = self.image.$container.getBoundingClientRect();
var width = rect.width,
height = rect.height;
if (!self.$clipStyles) {
self.$clipStyles = document.createElement('style');
self.$clipStyles.setAttribute('type', 'text/css');
self.$clipStyles.setAttribute('id', "jarallax-clip-".concat(self.instanceID));
var head = document.head || document.getElementsByTagName('head')[0];
head.appendChild(self.$clipStyles);
} // clip is used for old browsers.
// clip-path for modern browsers (also fixes Safari v14 bug https://github.com/nk-o/jarallax/issues/181 ).
var styles = "#jarallax-container-".concat(self.instanceID, " {\n clip: rect(0 ").concat(width, "px ").concat(height, "px 0);\n clip: rect(0, ").concat(width, "px, ").concat(height, "px, 0);\n -webkit-clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);\n clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);\n }"); // add clip styles inline (this method need for support IE8 and less browsers)
if (self.$clipStyles.styleSheet) {
self.$clipStyles.styleSheet.cssText = styles;
} else {
self.$clipStyles.innerHTML = styles;
}
}
}, {
key: "coverImage",
value: function coverImage() {
var self = this;
var rect = self.image.$container.getBoundingClientRect();
var contH = rect.height;
var speed = self.options.speed;
var isScroll = 'scroll' === self.options.type || 'scroll-opacity' === self.options.type;
var scrollDist = 0;
var resultH = contH;
var resultMT = 0; // scroll parallax
if (isScroll) {
// scroll distance and height for image
if (0 > speed) {
scrollDist = speed * Math.max(contH, wndH);
if (wndH < contH) {
scrollDist -= speed * (contH - wndH);
}
} else {
scrollDist = speed * (contH + wndH);
} // size for scroll parallax
if (1 < speed) {
resultH = Math.abs(scrollDist - wndH);
} else if (0 > speed) {
resultH = scrollDist / speed + Math.abs(scrollDist);
} else {
resultH += (wndH - contH) * (1 - speed);
}
scrollDist /= 2;
} // store scroll distance
self.parallaxScrollDistance = scrollDist; // vertical center
if (isScroll) {
resultMT = (wndH - resultH) / 2;
} else {
resultMT = (contH - resultH) / 2;
} // apply result to item
self.css(self.image.$item, {
height: "".concat(resultH, "px"),
marginTop: "".concat(resultMT, "px"),
left: 'fixed' === self.image.position ? "".concat(rect.left, "px") : '0',
width: "".concat(rect.width, "px")
}); // call onCoverImage event
if (self.options.onCoverImage) {
self.options.onCoverImage.call(self);
} // return some useful data. Used in the video cover function
return {
image: {
height: resultH,
marginTop: resultMT
},
container: rect
};
}
}, {
key: "isVisible",
value: function isVisible() {
return this.isElementInViewport || false;
}
}, {
key: "onScroll",
value: function onScroll(force) {
var self = this;
var rect = self.$item.getBoundingClientRect();
var contT = rect.top;
var contH = rect.height;
var styles = {}; // check if in viewport
var viewportRect = rect;
if (self.options.elementInViewport) {
viewportRect = self.options.elementInViewport.getBoundingClientRect();
}
self.isElementInViewport = 0 <= viewportRect.bottom && 0 <= viewportRect.right && viewportRect.top <= wndH && viewportRect.left <= global__WEBPACK_IMPORTED_MODULE_1__["window"].innerWidth; // stop calculations if item is not in viewport
if (force ? false : !self.isElementInViewport) {
return;
} // calculate parallax helping variables
var beforeTop = Math.max(0, contT);
var beforeTopEnd = Math.max(0, contH + contT);
var afterTop = Math.max(0, -contT);
var beforeBottom = Math.max(0, contT + contH - wndH);
var beforeBottomEnd = Math.max(0, contH - (contT + contH - wndH));
var afterBottom = Math.max(0, -contT + wndH - contH);
var fromViewportCenter = 1 - 2 * ((wndH - contT) / (wndH + contH)); // calculate on how percent of section is visible
var visiblePercent = 1;
if (contH < wndH) {
visiblePercent = 1 - (afterTop || beforeBottom) / contH;
} else if (beforeTopEnd <= wndH) {
visiblePercent = beforeTopEnd / wndH;
} else if (beforeBottomEnd <= wndH) {
visiblePercent = beforeBottomEnd / wndH;
} // opacity
if ('opacity' === self.options.type || 'scale-opacity' === self.options.type || 'scroll-opacity' === self.options.type) {
styles.transform = 'translate3d(0,0,0)';
styles.opacity = visiblePercent;
} // scale
if ('scale' === self.options.type || 'scale-opacity' === self.options.type) {
var scale = 1;
if (0 > self.options.speed) {
scale -= self.options.speed * visiblePercent;
} else {
scale += self.options.speed * (1 - visiblePercent);
}
styles.transform = "scale(".concat(scale, ") translate3d(0,0,0)");
} // scroll
if ('scroll' === self.options.type || 'scroll-opacity' === self.options.type) {
var positionY = self.parallaxScrollDistance * fromViewportCenter; // fix if parallax block in absolute position
if ('absolute' === self.image.position) {
positionY -= contT;
}
styles.transform = "translate3d(0,".concat(positionY, "px,0)");
}
self.css(self.image.$item, styles); // call onScroll event
if (self.options.onScroll) {
self.options.onScroll.call(self, {
section: rect,
beforeTop: beforeTop,
beforeTopEnd: beforeTopEnd,
afterTop: afterTop,
beforeBottom: beforeBottom,
beforeBottomEnd: beforeBottomEnd,
afterBottom: afterBottom,
visiblePercent: visiblePercent,
fromViewportCenter: fromViewportCenter
});
}
}
}, {
key: "onResize",
value: function onResize() {
this.coverImage();
this.clipContainer();
}
}]);
return Jarallax;
}(); // global definition
var plugin = function plugin(items, options) {
// check for dom element
// thanks: http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object
if ('object' === (typeof HTMLElement === "undefined" ? "undefined" : _typeof(HTMLElement)) ? items instanceof HTMLElement : items && 'object' === _typeof(items) && null !== items && 1 === items.nodeType && 'string' === typeof items.nodeName) {
items = [items];
}
var len = items.length;
var k = 0;
var ret;
for (var _len2 = arguments.length, args = new Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
args[_key2 - 2] = arguments[_key2];
}
for (k; k < len; k += 1) {
if ('object' === _typeof(options) || 'undefined' === typeof options) {
if (!items[k].jarallax) {
items[k].jarallax = new Jarallax(items[k], options);
}
} else if (items[k].jarallax) {
// eslint-disable-next-line prefer-spread
ret = items[k].jarallax[options].apply(items[k].jarallax, args);
}
if ('undefined' !== typeof ret) {
return ret;
}
}
return items;
};
plugin.constructor = Jarallax;
/* harmony default export */ __webpack_exports__["default"] = (plugin);
/***/ })
/******/ ]);