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October 10, 2019 09:35
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Smooth scroll example GSAP+Vue
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| <template> | |
| <div class="page" :style="{height: `${pageHeight}px`" }> | |
| <div ref="page" class="page-inner"> | |
| </div> | |
| </template> | |
| <script> | |
| import { TimelineMax, TweenMax, Linear } from 'gsap' | |
| export default { | |
| data() { | |
| return { | |
| tl: new TimelineMax({ paused: true }), | |
| proxyTween: TweenMax.to({}, 1, { paused: true }), | |
| scrollPosition: 0, | |
| pageHeight: 0 | |
| } | |
| }, | |
| methods: { | |
| onLoadComplete() { | |
| TweenMax.defaultEase = Linear.easeNone | |
| TweenMax.set(document.body, { | |
| height: this.$refs.page.getBoundingClientRect().height | |
| }) | |
| this.createTimeline() | |
| window.addEventListener('scroll', this.onScroll, false) | |
| this.onScroll() | |
| TweenMax.ticker.addEventListener('tick', this.onTick) | |
| this.isLoaded = true | |
| }, | |
| createTimeline() { | |
| const { page } = this.$refs | |
| const { height } = page.getBoundingClientRect().height | |
| this.pageHeight = height | |
| this.tl.fromTo( | |
| page, | |
| 1, | |
| { | |
| y: 0 | |
| }, | |
| { | |
| y: -height | |
| }, | |
| 0 | |
| ) | |
| }, | |
| onScroll() { | |
| const totalHeight = this.$refs.page.getBoundingClientRect().height | |
| const windowHeight = window.innerHeight | |
| const scrollTop = window.pageYOffset | |
| TweenMax.set(document.body, { | |
| height: totalHeight | |
| }) | |
| const scrollPercent = Math.max( | |
| scrollTop / (totalHeight - windowHeight), | |
| 0 | |
| ) | |
| this.proxyTween.progress(scrollPercent).pause() | |
| }, | |
| onTick() { | |
| let progress = this.tl.progress() | |
| progress += (this.proxyTween.progress() - progress) * 0.05 | |
| // console.log(progress) | |
| this.tl.progress(progress) | |
| } | |
| } | |
| } | |
| </script> | |
| <style scoped> | |
| .page { | |
| position: fixed; | |
| left: 0; | |
| top: 0; | |
| width: 100%; | |
| min-height: 100vh; | |
| } | |
| .page-inner { | |
| position: fixed; | |
| left: 0; | |
| top: 0; | |
| width: 100%; | |
| } | |
| </style> |
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