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439 lines
14 KiB
439 lines
14 KiB
<template> |
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<div id="base-slide-wrapper" ref="slideWrapper"> |
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<div class="toolbar-ctn" v-if="showIndicator"> |
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<div class="notice" :style="noticeStyle"><span>下拉刷新内容</span></div> |
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<div class="toolbar" ref="toolbar" :style="toolbarStyle"> |
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<div class="left">直播</div> |
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<div class="tab-ctn"> |
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<div class="tabs" ref="tabs"> |
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<div class="tab" |
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:class="currentSlideItemIndex === 0?'active':''" |
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@click="changeIndex(false,0)"> |
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<span>关注</span></div> |
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<div class="tab" |
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:class="currentSlideItemIndex === 1?'active':''" |
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@click="changeIndex(false,1)"><span>推荐</span></div> |
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</div> |
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<div class="indicator" ref="indicator"></div> |
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</div> |
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<div class="right" :style="{opacity:loading ? 0 : 1}">搜索</div> |
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</div> |
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<div class="loading" :style="loadingStyle">AA</div> |
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</div> |
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<div id="base-slide-list" ref="slideList" |
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:style="{'flex-direction':direction}" |
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@touchstart="touchStart($event)" |
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@touchmove="touchMove($event)" |
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@touchend="touchEnd($event)"> |
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<slot></slot> |
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</div> |
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</div> |
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</template> |
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<script> |
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export default { |
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name: "BaseSlideList", |
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props: { |
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direction: { |
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type: String, |
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default: () => 'row' |
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}, |
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showIndicator: { |
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type: Boolean, |
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default: () => false |
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}, |
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useHomeLoading: { |
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type: Boolean, |
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default: () => false |
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}, |
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virtual: { |
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type: Boolean, |
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default: () => false |
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}, |
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total: { |
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type: Number, |
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default: () => 20 |
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}, |
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activeIndex: { |
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type: Number, |
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default: () => 0 |
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}, |
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}, |
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computed: { |
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toolbarStyle() { |
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if (!this.useHomeLoading) return |
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return { |
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opacity: 1 - this.homeLoadingMoveYDistance / 20, |
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'transition-duration': this.toolbarStyleTransitionDuration + 'ms', |
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transform: `translate3d(0, ${this.homeLoadingMoveYDistance > 60 ? 60 : this.homeLoadingMoveYDistance}px, 0)`, |
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} |
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}, |
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noticeStyle() { |
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if (!this.useHomeLoading) return |
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return { |
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opacity: this.homeLoadingMoveYDistance / 60, |
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'transition-duration': this.toolbarStyleTransitionDuration + 'ms', |
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transform: `translate3d(0, ${this.homeLoadingMoveYDistance > 60 ? 60 : this.homeLoadingMoveYDistance}px, 0)`, |
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} |
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}, |
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loadingStyle() { |
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if (!this.useHomeLoading) return |
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if (this.loading) { |
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return { |
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opacity: 1, |
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'transition-duration': '300ms', |
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} |
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} |
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if (this.homeLoadingMoveYDistance !== 0) { |
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return { |
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opacity: this.homeLoadingMoveYDistance / 60, |
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'transition-duration': this.toolbarStyleTransitionDuration + 'ms', |
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transform: `translate3d(0, ${this.homeLoadingMoveYDistance > 60 ? 60 : this.homeLoadingMoveYDistance}px, 0)`, |
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} |
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} |
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} |
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}, |
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data() { |
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return { |
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loading: false, |
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wrapperWidth: 0, |
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wrapperHeight: 0, |
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startLocationX: 0, |
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startLocationY: 0, |
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moveXDistance: 0, |
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moveYDistance: 0, |
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judgeValue: 10, |
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startTime: 0, |
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currentSlideItemIndex: 0, |
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isDrawRight: true, |
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isDrawDown: true, |
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isCanRightWiping: false, |
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isCanDownWiping: false, |
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isNeedCheck: true, |
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slideList: null, |
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slideItems: null, |
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indicatorRef: null, |
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slideItemsWidths: [], |
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slideItemsHeights: [], |
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tabIndicatorRelationActiveIndexLefts: [],//指标和slideItem的index的对应left, |
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indicatorSpace: 0,//indicator之间的间距 |
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toolbarStyleTransitionDuration: 0, |
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homeLoadingMoveYDistance: 0,//homeLoading专用的MoveYDistance,因为MoveYDistance是一直更新的,左右划的时候也在更新,会造成 |
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//在往左划,但上面的toolbar开始往下移了,所以需要用一个专用的值来有条件的保存MoveYDistance,即只direction = row的时候 |
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} |
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}, |
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watch: { |
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activeIndex() { |
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this.changeIndex() |
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}, |
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}, |
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mounted() { |
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this.checkChildren(true) |
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this.showIndicator && this.initTabs() |
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this.changeIndex(true) |
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}, |
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methods: { |
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changeIndex(init = false, index = null) { |
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this.currentSlideItemIndex = index !== null ? index : this.activeIndex |
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!init && this.$setCss(this.slideList, 'transition-duration', `300ms`) |
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if (this.direction === 'row') { |
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this.$setCss(this.slideList, 'transform', `translate3d(${-this.getWidth(this.currentSlideItemIndex) + this.moveXDistance}px, 0px, 0px)`) |
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if (this.showIndicator) { |
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this.$setCss(this.indicatorRef, 'left', this.tabIndicatorRelationActiveIndexLefts[this.currentSlideItemIndex] + 'px') |
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} |
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} else { |
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this.$setCss(this.slideList, 'transform', `translate3d(0px, ${-this.getHeight(this.currentSlideItemIndex) + this.moveYDistance}px, 0px)`) |
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} |
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}, |
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initTabs() { |
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let tabs = this.$refs.tabs |
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this.indicatorRef = this.$refs.indicator |
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for (let i = 0; i < tabs.children.length; i++) { |
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let item = tabs.children[i] |
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this.tabWidth = this.$getCss(item, 'width') |
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this.tabIndicatorRelationActiveIndexLefts.push( |
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item.getBoundingClientRect().x - tabs.children[0].getBoundingClientRect().x + this.tabWidth * 0.15) |
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} |
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this.indicatorSpace = this.tabIndicatorRelationActiveIndexLefts[1] - this.tabIndicatorRelationActiveIndexLefts[0] |
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if (this.showIndicator) { |
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this.$setCss(this.indicatorRef, 'transition-duration', `300ms`) |
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this.$setCss(this.indicatorRef, 'left', this.tabIndicatorRelationActiveIndexLefts[this.currentSlideItemIndex] + 'px') |
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} |
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}, |
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checkChildren(init) { |
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this.slideList = this.$refs.slideList |
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this.slideItems = this.slideList.children |
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this.wrapperWidth = this.$getCss(this.slideList, 'width') |
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this.wrapperHeight = this.$getCss(this.slideList, 'height') |
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for (let i = 0; i < this.slideItems.length; i++) { |
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let el = this.slideItems[i] |
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this.slideItemsWidths.push(this.$getCss(el, 'width')) |
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this.slideItemsHeights.push(this.$getCss(el, 'height')) |
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} |
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}, |
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touchStart(e) { |
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this.$setCss(this.slideList, 'transition-duration', `0ms`) |
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this.showIndicator && this.$setCss(this.indicatorRef, 'transition-duration', `0ms`) |
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this.toolbarStyleTransitionDuration = 0 |
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this.startLocationX = e.touches[0].pageX |
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this.startLocationY = e.touches[0].pageY |
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this.startTime = Date.now() |
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}, |
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touchMove(e) { |
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this.moveXDistance = e.touches[0].pageX - this.startLocationX |
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this.moveYDistance = e.touches[0].pageY - this.startLocationY |
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this.isDrawRight = this.moveXDistance < 0 |
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this.isDrawDown = this.moveYDistance < 0 |
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this.checkDirection() |
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//多重判断,this.isCanDownWiping 这个判断是为了,只能在一个方向上,进行页面更新,比如说,我斜着画,就会出现toolbar又在下移, |
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//slideitem同时在左右移的情况,所以不能直接使用moveYDistance |
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if (this.useHomeLoading && this.isCanDownWiping && !this.loading) { |
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this.homeLoadingMoveYDistance = this.moveYDistance |
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} |
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if (this.direction === 'row') { |
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if (this.isCanRightWiping) { |
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// //禁止在index=0页面的时候,向左划 |
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if (this.currentSlideItemIndex === 0 && !this.isDrawRight) return |
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//禁止在最后页面的时候,向右划 |
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if (this.currentSlideItemIndex === this.slideItems.length - 1 && this.isDrawRight) return |
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this.$stopPropagation(e) |
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this.$setCss(this.slideList, 'transform', `translate3d(${-this.getWidth(this.currentSlideItemIndex) + this.moveXDistance}px, 0px, 0px)`) |
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this.showIndicator && this.$setCss(this.indicatorRef, 'left', |
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this.tabIndicatorRelationActiveIndexLefts[this.currentSlideItemIndex] - |
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this.moveXDistance / (this.$store.state.bodyWidth / this.indicatorSpace) + 'px') |
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} |
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} else { |
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if (this.isCanDownWiping) { |
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if (this.currentSlideItemIndex === 0 && !this.isDrawDown) {//在第一个item,并且想往下划。 |
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this.$attrs['onFirst'] && this.$emit('first', this.moveYDistance) |
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return |
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} |
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if (this.virtual) { |
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if (this.currentSlideItemIndex === this.total - 1 && this.isDrawDown) return |
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} else { |
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if (this.currentSlideItemIndex === this.slideItems.length - 1 && this.isDrawDown) return |
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} |
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// this.$attrs.moveYDistance && this.$emit('moveYDistance', this.moveYDistance) |
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this.$stopPropagation(e) |
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this.$setCss(this.slideList, 'transform', `translate3d(0px, ${-this.getHeight(this.currentSlideItemIndex) + this.moveYDistance}px, 0px)`) |
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} |
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} |
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}, |
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getData() { |
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this.loading = true |
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setTimeout(() => { |
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this.loading = false |
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}, 1500) |
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}, |
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touchEnd(e) { |
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this.$attrs['onEnd'] && this.$emit('end') |
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if (this.useHomeLoading) { |
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if (this.homeLoadingMoveYDistance > 60) { |
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this.getData() |
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} |
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this.toolbarStyleTransitionDuration = 300 |
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this.homeLoadingMoveYDistance = 0 |
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} |
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this.$setCss(this.slideList, 'transition-duration', `300ms`) |
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this.showIndicator && this.$setCss(this.indicatorRef, 'transition-duration', `300ms`) |
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let endTime = Date.now() |
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let gapTime = endTime - this.startTime |
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// console.log(gapTime) |
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// if (gapTime) |
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if (this.direction === 'row') { |
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if (this.currentSlideItemIndex === 0 && !this.isDrawRight) return |
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if (this.currentSlideItemIndex === this.slideItems.length - 1 && this.isDrawRight) return |
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if (Math.abs(this.moveXDistance) < 20) gapTime = 1000 |
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if (Math.abs(this.moveXDistance) > (this.wrapperWidth / 3)) gapTime = 100 |
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if (gapTime < 150) { |
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if (this.isDrawRight) { |
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this.currentSlideItemIndex += 1 |
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} else { |
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this.currentSlideItemIndex -= 1 |
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} |
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} |
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this.$setCss(this.slideList, 'transform', `translate3d(${-this.getWidth(this.currentSlideItemIndex)}px, 0px, 0px)`) |
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if (this.showIndicator) { |
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this.$setCss(this.indicatorRef, 'left', this.tabIndicatorRelationActiveIndexLefts[this.currentSlideItemIndex] + 'px') |
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} |
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} else { |
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if (this.currentSlideItemIndex === 0 && !this.isDrawDown) return |
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//禁止在最后页面的时候,向右划 |
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if (this.virtual) { |
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if (this.currentSlideItemIndex === this.total - 1 && this.isDrawDown) return |
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} else { |
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if (this.currentSlideItemIndex === this.slideItems.length - 1 && this.isDrawDown) return |
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} |
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if (Math.abs(this.moveYDistance) < 20) gapTime = 1000 |
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if (Math.abs(this.moveYDistance) > (this.wrapperHeight / 3)) gapTime = 100 |
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if (gapTime < 150) { |
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if (this.isDrawDown) { |
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this.currentSlideItemIndex += 1 |
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} else { |
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this.currentSlideItemIndex -= 1 |
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} |
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this.$emit('slide', { |
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currentSlideItemIndex: this.currentSlideItemIndex, |
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isDrawDown: this.isDrawDown, |
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isDrawRight: this.isDrawRight |
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}) |
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} |
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this.$setCss(this.slideList, 'transform', `translate3d(0px, ${-this.getHeight(this.currentSlideItemIndex)}px, 0px)`) |
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} |
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this.resetConfig() |
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this.$attrs['onUpdate:active-index'] && this.$emit('update:active-index', this.currentSlideItemIndex) |
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}, |
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resetConfig() { |
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this.isCanDownWiping = false |
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this.isCanRightWiping = false |
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this.isNeedCheck = true |
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this.moveXDistance = 0 |
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this.moveYDistance = 0 |
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}, |
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getWidth(index) { |
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return this.slideItemsWidths.reduce((p, c, i) => { |
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if (i < index) { |
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//最后一页,如果宽度不够屏幕宽度,那不能拉完 |
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if (this.slideItemsWidths.length - 1 === i + 1) { |
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p = p + c - (this.wrapperWidth - this.slideItemsWidths[index]) |
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} else { |
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p += c |
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} |
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} |
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return p |
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}, 0) |
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}, |
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getHeight(index) { |
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return this.slideItemsHeights.reduce((p, c, i) => { |
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if (i < index) { |
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//最后一页,如果宽度不够屏幕宽度,那不能拉完 |
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if (this.slideItemsHeights.length - 1 === i + 1) { |
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p = p + c - (this.wrapperHeight - this.slideItemsHeights[index]) |
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} else { |
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p += c |
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} |
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} |
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return p |
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}, 0) |
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}, |
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checkDirection() { |
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if (!this.isNeedCheck) return |
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let angle = (Math.abs(this.moveXDistance) * 10) / (Math.abs(this.moveYDistance) * 10) |
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if (angle < 0.6) { |
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//上下划 |
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this.isCanDownWiping = true |
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this.isCanRightWiping = false |
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this.isNeedCheck = false |
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return |
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} |
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if (angle > 5) { |
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//左右划 |
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this.isCanDownWiping = false |
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this.isCanRightWiping = true |
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this.isNeedCheck = false |
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} |
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} |
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} |
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} |
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</script> |
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<style scoped lang="scss"> |
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#base-slide-wrapper { |
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width: 100%; |
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height: 100%; |
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overflow: hidden; |
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#base-slide-list { |
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display: flex; |
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height: 100%; |
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width: 100%; |
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position: relative; |
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} |
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.toolbar-ctn { |
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position: fixed; |
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font-size: 1.6rem; |
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top: 0; |
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left: 0; |
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height: 60px; |
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z-index: 2; |
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width: 100%; |
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color: white; |
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.notice { |
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opacity: 0; |
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top: 0; |
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position: absolute; |
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width: 100vw; |
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height: 100%; |
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display: flex; |
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justify-content: center; |
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align-items: center; |
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} |
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.loading { |
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opacity: 0; |
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top: 20px; |
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right: 15px; |
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position: absolute; |
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} |
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.toolbar { |
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position: relative; |
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color: white; |
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width: 100%; |
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height: 100%; |
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box-sizing: border-box; |
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padding: 0 15px; |
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display: flex; |
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justify-content: space-between; |
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align-items: center; |
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.tab-ctn { |
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width: 30%; |
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position: relative; |
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.tabs { |
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display: flex; |
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justify-content: space-between; |
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font-weight: bold; |
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.tab { |
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transition: color .3s; |
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color: gray; |
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&.active { |
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color: white; |
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} |
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} |
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} |
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.indicator { |
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//transition: left .3s; |
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position: absolute; |
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bottom: -8px; |
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height: 3px; |
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width: 20px; |
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background: #fff; |
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border-radius: 5px; |
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} |
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} |
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} |
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} |
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} |
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</style> |