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June 29, 2020 12:55
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| import {anime} from 'anime.js'; | |
| class Parallaxer { | |
| constructor(args = { | |
| selector: '[data-parallax]' | |
| }) { | |
| this.argSelector = args.selector | |
| this.easeFunction = 'easeOutSine' | |
| this.interactiveElements = [] | |
| this.refreshGlobals() | |
| this.setupAll() | |
| window.addEventListener('scroll', ev => this.updateAll(ev)) | |
| window.addEventListener('resize', ev => this.refreshGlobals(ev)) | |
| } | |
| refreshGlobals() { | |
| this.windowHeight = document.documentElement.clientHeight | |
| } | |
| setupAll() { | |
| this.interactiveElements = document.querySelectorAll(this.argSelector) | |
| this.interactiveElements.forEach(interactiveEl => { | |
| this.setupElement(interactiveEl) | |
| this.updateElement(interactiveEl) | |
| }) | |
| } | |
| setupElement(el) { | |
| el.timeLine = anime.timeline({ | |
| autoplay: false | |
| }) | |
| el.dataParallax = el.getAttribute('data-parallax').split(/[,\s]+(?={)/) | |
| const setEasing = this.easeFunction | |
| el.modoOut = el.getAttribute('data-parallax-out') | |
| if (window.innerWidth > 768) { | |
| el.dataParallax.forEach(parallaxAttr => { | |
| let v = eval(`(${parallaxAttr})`) | |
| v.targets = el | |
| v.easing = setEasing | |
| el.timeLine.add(v) | |
| }); | |
| } | |
| } | |
| updateAll() { | |
| this.interactiveElements.forEach(interactiveEl => { | |
| this.updateElement(interactiveEl) | |
| }) | |
| } | |
| updateElement(el) { | |
| const bound = el.getBoundingClientRect() | |
| if (el.modoOut) { | |
| if (bound.top <= 0 && bound.bottom > 0) el.timeLine.seek(el.timeLine.duration * ((0 - bound.top) / (0 + bound.height)).toFixed(3)) | |
| else if (bound.top >= 0) el.timeLine.seek(0) | |
| else if (bound.bottom <= 0) el.timeLine.seek(el.timeLine.duration) | |
| } else { | |
| if (bound.top < this.windowHeight && bound.bottom > 0) el.timeLine.seek(el.timeLine.duration * ((this.windowHeight - bound.top) / (this.windowHeight + bound.height)).toFixed(3)) | |
| else if (bound.top >= this.windowHeight) el.timeLine.seek(0) | |
| else if (bound.bottom <= 0) el.timeLine.seek(el.timeLine.duration) | |
| } | |
| } | |
| } | |
| if (navigator.userAgent.indexOf('MSIE') !== -1 || | |
| navigator.appVersion.indexOf('Trident/') > -1) { | |
| /* Microsoft Internet Explorer detected in. */ | |
| } else { | |
| let parallaxer = new Parallaxer() | |
| } |
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