344 lines
12 KiB
Vue
344 lines
12 KiB
Vue
<template>
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<div id="base-slide-wrapper">
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<div id="base-slide-list" ref="slideList"
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:style="{'flex-direction':'column'}"
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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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import * as Vue from 'vue'
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export default {
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name: "BaseSlideList",
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props: {
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renderSlide: {
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type: Function,
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default: () => {
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return null
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}
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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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list: {
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type: Array,
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default: () => {
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return []
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}
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},
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defaultVirtualItemTotal: {
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type: Number,
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default: () => 5
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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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data() {
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return {
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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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isDrawDown: true,
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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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slideItemsHeights: [],
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appInsMap: new Map()
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}
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},
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watch: {
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watchList: {
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handler(newVal, oldVal) {
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if (!this.virtual) return
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if (oldVal.length === 0) {
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let startIndex = 0
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if (this.currentSlideItemIndex >= this.defaultVirtualItemTotal) {
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startIndex = this.currentSlideItemIndex - (this.defaultVirtualItemTotal - 1) / 2
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}
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this.list.slice(startIndex, startIndex + 5).map(
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(item, index) => {
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let el = null
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//自动播放，当前条（可能是0，可能是其他），试了下用jq来找元素，然后trigger play事件，要慢点样
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if (startIndex + index === this.currentSlideItemIndex) {
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el = this.getInsEl(item, startIndex + index, true)
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} else {
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el = this.getInsEl(item, startIndex + index)
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}
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this.slideList.appendChild(el)
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})
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let that = this
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if (that.currentSlideItemIndex > 2) {
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this.$setCss(this.slideList, 'transform', `translate3d(0px,
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${-this.currentSlideItemIndex * this.wrapperHeight}px, 0px)`)
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$(".video-slide-item").each(function () {
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$(this).css('top', (that.currentSlideItemIndex - 2) * that.wrapperHeight)
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})
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}
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setTimeout(this.checkChildren, 100)
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} else {
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let endLength = oldVal.length + 3
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newVal.slice(oldVal.length, endLength).map((item, index) => {
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this.slideList.appendChild(this.getInsEl(item, oldVal.length + index))
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})
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this.checkChildren()
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}
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},
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deep: true
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}
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},
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computed: {
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//包装下，不然后watch里面监听到的新值和旧值是一样的，麻了
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watchList() {
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return [...this.list]
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}
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},
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mounted: async function () {
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await this.checkChildren()
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if (this.virtual) {
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this.currentSlideItemIndex = this.activeIndex
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this.list.slice(this.currentSlideItemIndex, (this.defaultVirtualItemTotal + 1) / 2).map((item, index) => {
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this.slideList.appendChild(this.getInsEl(item, index))
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})
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}
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await this.checkChildren()
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},
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methods: {
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getInsEl(item, index, play = false) {
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let slideVNode = this.renderSlide(item, index, play)
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const app = Vue.createApp({
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render() {
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return slideVNode
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}
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})
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const parent = document.createElement('div')
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const ins = app.mount(parent)
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this.appInsMap.set(index, app)
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// this.appInsMap.set(index, ins)
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return ins.$el
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},
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checkChildren() {
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this.slideList = this.$refs.slideList
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this.slideItems = this.slideList.children
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this.wrapperHeight = this.$getCss(this.slideList, 'height')
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if (!this.virtual){
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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.slideItemsHeights.push(this.$getCss(el, 'height'))
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}
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}
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},
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touchStart(e) {
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// console.log('this.slideItemsHeights',this.slideItemsHeights)
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this.$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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if (this.virtual) {
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let that = this
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let items = $(".video-slide-item")
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if (items.length > this.defaultVirtualItemTotal) {
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let middle = (this.defaultVirtualItemTotal - 1) / 2
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let removeNum = 0
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items.each(function (index) {
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if ($(this).data('index') === that.currentSlideItemIndex) {
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console.log('start-index', index)
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if (index !== middle) {
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removeNum = index - middle
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}
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}
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})
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items.each(function (index) {
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$(this).css('top', (that.currentSlideItemIndex - 2) * that.wrapperHeight)
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})
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for (let i = 0; i < removeNum; i++) {
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$(items[i]).remove()
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}
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}
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}
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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.isDrawDown = this.moveYDistance < 0
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this.checkDirection()
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//me页面，需要获取向下滑动的时候
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if (!this.isDrawDown) {
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this.$attrs['onFirst'] && this.$emit('first', this.moveYDistance)
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}
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//todo 太卡了，后面考虑用原生js来写
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// this.$attrs['onMove'] && this.$emit('move', {
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// x: {distance: this.moveXDistance, isDrawRight: this.isDrawRight},
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// y: {distance: this.lastMoveYDistance, isDrawDown: this.isDrawDown},
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// })
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if (this.isCanDownWiping) {
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if (this.currentSlideItemIndex === 0 && !this.isDrawDown) return; //在第一个item，并且想往下划。
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if (this.virtual) {
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if (this.currentSlideItemIndex === this.list.length - 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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// console.log('this.isCanDownWiping')
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this.$stopPropagation(e)
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this.$setCss(this.slideList, 'transform', `translate3d(0px, ${-this.getHeight(this.currentSlideItemIndex) +
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this.moveYDistance +
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(this.isDrawDown ? this.judgeValue : -this.judgeValue)
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}px, 0px)`)
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}
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},
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touchEnd(e) {
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if (this.isCanDownWiping) {
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if (this.currentSlideItemIndex === 0 && !this.isDrawDown) return
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if (this.virtual) {
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if (this.currentSlideItemIndex === this.list.length - 1 && this.isDrawDown) return this.$attrs['onEnd'] && this.$emit('end')
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} else {
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if (this.currentSlideItemIndex === this.slideItems.length - 1 && this.isDrawDown) return this.$attrs['onEnd'] && this.$emit('end')
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}
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this.$stopPropagation(e)
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this.$setCss(this.slideList, 'transition-duration', `300ms`)
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let endTime = Date.now()
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let gapTime = endTime - this.startTime
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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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// console.log(this.slideItems.length)
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let that = this
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if (this.virtual) {
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if (this.isDrawDown) {
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let addItemIndex = this.currentSlideItemIndex + 2
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if (this.slideItems.length < this.defaultVirtualItemTotal) {
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let res = $(`#base-slide-list .video-slide-item[data-index=${addItemIndex}]`)
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if (res.length === 0) {
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this.slideList.appendChild(this.getInsEl(this.list[addItemIndex], addItemIndex))
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}
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}
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if (this.slideItems.length === this.defaultVirtualItemTotal
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&& this.currentSlideItemIndex >= (this.defaultVirtualItemTotal + 1) / 2
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&& this.currentSlideItemIndex <= this.list.length - 3
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) {
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let res = $(`#base-slide-list .video-slide-item[data-index=${addItemIndex}]`)
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// console.log(videos)
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if (res.length === 0) {
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this.slideList.appendChild(this.getInsEl(this.list[addItemIndex], addItemIndex))
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this.appInsMap.get($("#base-slide-list .video-slide-item:first").data('index')).unmount()
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// $("#base-slide-list .base-slide-item:first").remove()
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$(".video-slide-item").each(function () {
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$(this).css('top', (that.currentSlideItemIndex - 2) * that.wrapperHeight)
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})
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}
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}
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if (this.slideItems.length > this.defaultVirtualItemTotal) {
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this.appInsMap.get($("#base-slide-list .video-slide-item:first").data('index')).unmount()
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$(".video-slide-item").each(function () {
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$(this).css('top', (that.currentSlideItemIndex - 2) * that.wrapperHeight)
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})
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}
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} else {
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if (this.currentSlideItemIndex > 1 && this.currentSlideItemIndex <= this.list.length - 4) {
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let addItemIndex = this.currentSlideItemIndex - 2
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this.slideList.prepend(this.getInsEl(this.list[addItemIndex], addItemIndex))
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this.appInsMap.get($("#base-slide-list .video-slide-item:last").data('index')).unmount()
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// $("#base-slide-list .base-slide-item:last").remove()
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$(".video-slide-item").each(function () {
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$(this).css('top', (that.currentSlideItemIndex - 2) * that.wrapperHeight)
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})
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}
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}
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this.checkChildren()
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}
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}
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this.$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.isNeedCheck = true
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this.moveXDistance = 0
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this.moveYDistance = 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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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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if (Math.abs(this.moveXDistance) > this.judgeValue || Math.abs(this.moveYDistance) > this.judgeValue) {
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let angle = (Math.abs(this.moveXDistance) * 10) / (Math.abs(this.moveYDistance) * 10)
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if (angle > 1) {
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this.isCanDownWiping = false
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this.isCanRightWiping = true
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// console.log('横划')
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} else {
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this.isCanDownWiping = true
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this.isCanRightWiping = false
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// console.log('竖划')
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}
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// console.log(angle)
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return this.isNeedCheck = false
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}
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return this.isNeedCheck = true
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}
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}
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}
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</script>
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<style scoped lang="less">
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@import "../../assets/scss/index";
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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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}
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</style> |