抽离Vant weapp滑动单元格代码改造而成
带有拉动弹性回弹效果
demo展示：https://littaotao.github.io/me/index（切换为浏览器调试的手机模式并且再次刷新一次）
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<template> <div class="cell_container" @touchstart v-click-outside="handleClickOutside" @click="getClickHandler('cell')"> <div :style="{'transform': 'translateX('+(offset+(isElastic?elasticX:0))+'px)','transition-duration':dragging?'0s':'0.6s'}"> <!-- <div ref="cellLeft" class="cell_left" @click="getClickHandler('left', true)"> <div>收藏</div> <div>添加</div> </div> --> <div @touchend="onClick()" :class="offset?'cell_content':'cell_content_active'">SwipeCell</div> <div ref="cellRight" class="cell_right" @click="getClickHandler('right', true)"> <div :class="type?'divPostion':''" ref="remove" :style="{'background':'#ccc','padding-left':'10px','padding-right':10+(isElastic?Math.abs(elasticX/3):0)+'px','transition-duration':dragging?'0s':'0.6s'}">标记</div> <div :class="type?'divPostion':''" ref="tag" :style="{'transform': type?'translateX('+(-offset*removeWidth/cellRightWidth-(isElastic?elasticX/3:0))+'px)':'','padding-left':'10px','padding-right':10+(isElastic?Math.abs(elasticX/3):0)+'px','transition-duration':dragging?'0s':'0.6s','background':'#000'}">不再关注</div> <div :class="type?'divPostion':''" :style="{'transform': type?'translateX('+(-offset*(removeWidth+tagWidth)/cellRightWidth-(isElastic?elasticX/3*2:0))+'px)':'','padding-left':'10px','padding-right':10+(isElastic?Math.abs(elasticX/3):0)+'px','transition-duration':dragging?'0s':'0.6s'}">删除</div> </div> </div> </div></template><script>import ClickOutside from 'vue-click-outside';import { TouchMixin } from '@/components/mixins/touch';export default{ name:"SwipeCell", props: { // @deprecated // should be removed in next major version, use beforeClose instead onClose: Function, disabled: Boolean, leftWidth: [Number, String], rightWidth: [Number, String], beforeClose: Function, stopPropagation: Boolean, name: { type: [Number, String], default: '', }, // type:{ type:[Number,String], default:1 //0 常规 1 定位 }, isElastic:{ //弹性 type:Boolean, default:true } }, data(){ return { offset: 0, dragging: true, //-位移 elasticX:0, removeWidth:0, tagWidth:0, cellRightWidth:0, cellLeftWidth:0 } }, computed: { computedLeftWidth() { return +this.leftWidth || this.getWidthByRef('cellLeft'); }, computedRightWidth() { return +this.rightWidth || this.getWidthByRef('cellRight'); }, }, mounted() { //防止弹性效果影响宽度 this.cellRightWidth = this.getWidthByRef('cellRight'); this.cellLeftWidth = this.getWidthByRef('cellLeft'); this.removeWidth = this.getWidthByRef('remove'); this.tagWidth = this.getWidthByRef('tag'); this.bindTouchEvent(this.$el); }, mixins: [ TouchMixin ], directives: { ClickOutside }, methods: { getWidthByRef(ref) { if (this.$refs[ref]) { const rect = this.$refs[ref].getBoundingClientRect(); //type=1定位时获取宽度为0，为此采用获取子元素宽度之和 if(!rect.width){ let childWidth = 0; for(const item of this.$refs[ref].children){ childWidth += item.getBoundingClientRect().width } return childWidth; } return rect.width; } return 0; }, handleClickOutside(e){ if(this.opened) this.close() }, // @exposed-api open(position) { const offset = position === 'left' ? this.computedLeftWidth : -this.computedRightWidth; this.opened = true; this.offset = offset; this.$emit('open', { position, name: this.name, // @deprecated // should be removed in next major version detail: this.name, }); }, // @exposed-api close(position) { this.offset = 0; if (this.opened) { this.opened = false; this.$emit('close', { position, name: this.name, }); } }, onTouchStart(event) { if (this.disabled) { return; } this.startOffset = this.offset; this.touchStart(event); }, range(num, min, max) { return Math.min(Math.max(num, min), max); }, preventDefault(event, isStopPropagation) { /* istanbul ignore else */ if (typeof event.cancelable !== 'boolean' || event.cancelable) { event.preventDefault(); } if (this.isStopPropagations) { stopPropagation(event); } }, stopPropagations(event) { event.stopPropagation(); }, onTouchMove(event) { if (this.disabled) { return; } this.touchMove(event); if (this.direction === 'horizontal') { this.dragging = true; this.lockClick = true; const isPrevent = !this.opened || this.deltaX * this.startOffset < 0; if (isPrevent) { this.preventDefault(event, this.stopPropagation); } this.offset = this.range( this.deltaX + this.startOffset, -this.computedRightWidth, this.computedLeftWidth ); //增加弹性 if(this.computedRightWidth && this.offset === -this.computedRightWidth || this.computedLeftWidth && this.offset === this.computedLeftWidth){ // this.preventDefault(event, this.stopPropagation); //弹性系数 this.elasticX = (this.deltaX + this.startOffset - this.offset)/4; } }else{ //上下滑动后取消close this.dragging = true; this.lockClick = true; } }, onTouchEnd() { if (this.disabled) { return; } //回弹 this.elasticX = 0 if (this.dragging) { this.toggle(this.offset > 0 ? 'left' : 'right'); this.dragging = false; // compatible with desktop scenario setTimeout(() => { this.lockClick = false; }, 0); } }, toggle(direction) { const offset = Math.abs(this.offset); const THRESHOLD = 0.15; const threshold = this.opened ? 1 - THRESHOLD : THRESHOLD; const { computedLeftWidth, computedRightWidth } = this; if ( computedRightWidth && direction === 'right' && offset > computedRightWidth * threshold ) { this.open('right'); } else if ( computedLeftWidth && direction === 'left' && offset > computedLeftWidth * threshold ) { this.open('left'); } else { this.close(); } }, onClick(position = 'outside') { this.$emit('click', position); if (this.opened && !this.lockClick) { if (this.beforeClose) { this.beforeClose({ position, name: this.name, instance: this, }); } else if (this.onClose) { this.onClose(position, this, { name: this.name }); } else { this.close(position); } } }, getClickHandler(position, stop) { return (event) => { if (stop) { event.stopPropagation(); } this.onClick(position); }; }, }}</script><style lang="stylus" scoped>.cell_container{ position: relative; overflow: hidden; line-height: 68px; height:68px; div{ height: 100%; .cell_content{ height: 100%; width: 100%; text-align: center; } .cell_content_active{ height: 100%; width: 100%; text-align: center; &:active{ background: #e8e8e8; } } .cell_left,.cell_right{ position: absolute; top: 0; height: 100%; display: flex; color: #fff; .divPostion{ position: absolute; } div{ white-space:nowrap; display: flex; align-items: center; background: #ccc; } } .cell_left{ left: 0; transform:translateX(-100%); } .cell_right{ right: 0; transform:translateX(100%); } }}</style> |
touch.js
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import Vue from 'vue';export const isServer=false;const MIN_DISTANCE = 10;const TouchMixinData = { startX: Number, startY: Number, deltaX: Number, deltaY: Number, offsetX: Number, offsetY: Number, direction: String};function getDirection(x,y) { if (x > y && x > MIN_DISTANCE) { return 'horizontal'; } if (y > x && y > MIN_DISTANCE) { return 'vertical'; } return '';}export let supportsPassive = false;export function on( target, event, handler, passive = false) { if (!isServer) { target.addEventListener( event, handler, supportsPassive ? { capture: false, passive } : false ); }}export const TouchMixin = Vue.extend({ data() {TouchMixinData return { direction: '' } ; }, methods: { touchStart() { this.resetTouchStatus(); this.startX = event.touches[0].clientX; this.startY = event.touches[0].clientY; }, touchMove() { const touch = event.touches[0]; this.deltaX = touch.clientX - this.startX; this.deltaY = touch.clientY - this.startY; this.offsetX = Math.abs(this.deltaX); this.offsetY = Math.abs(this.deltaY); this.direction = this.direction || getDirection(this.offsetX, this.offsetY); }, resetTouchStatus() { this.direction = ''; this.deltaX = 0; this.deltaY = 0; this.offsetX = 0; this.offsetY = 0; }, // avoid Vue 2.6 event bubble issues by manually binding events // https://github.com/youzan/vant/issues/3015 bindTouchEvent( el ) { const { onTouchStart, onTouchMove, onTouchEnd } = this; on(el, 'touchstart', onTouchStart); on(el, 'touchmove', onTouchMove); if (onTouchEnd) { on(el, 'touchend', onTouchEnd); on(el, 'touchcancel', onTouchEnd); } }, },}); |
引入即可！！！
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原文链接：https://blog.csdn.net/qq_43476178/article/details/107083010
