建站资讯

小程序免费制作_使用vue制造探探滑动堆叠组件的

作者:admin 发布时间:2021-01-08
使用vue制作探探滑动堆叠组件的实例代码       探探的堆叠滑动组件起到了关键的作用,下面就来看看如何用vue写一个探探的堆叠组件,感兴趣的朋友一起看看吧

效果图如下所示:

 

前言

嗨,说起探探想必各位程序汪都不陌生(毕竟妹子很多),能在上面丝滑的翻牌子,探探的的堆叠滑动组件起到了关键的作用,下面就来看看如何用vue写一个探探的堆叠组件

一. 功能分析

简单使用下探探会发现,堆叠滑动的功能很简单,用一张图概括就是:

 

简单归纳下里面包含的基本功能点:

图片的堆叠 图片第一张的滑动 条件成功后的滑出,条件失败后的回弹 滑出后下一张图片堆叠到顶部 体验优化 根据触摸点的不同,滑动时首图有不同角度偏移 偏移面积判定是否成功滑出

1. 堆叠效果

堆叠图片效果在网上有大量的实例,实现的方法大同小异,主要通过在父层设定及,来实现子层的透视,子层设定好translate3d Z轴数值即可模拟出堆叠效果,具体代码如下

// 图片堆叠dom
 !--opacity: 0 隐藏我们不想看到的stack-item层级-- 
 !--z-index: -1 调整stack-item层级"-- 
 li img src="1.png" alt="01" /li 
 li img src="2.png" alt="02" /li 
 li img src="3.png" alt="03" /li 
 li img src="4.png" alt="04" /li 
 li img src="5.png" alt="05" /li 
 /ul 
 style 
.stack {
 width: 100%;
 height: 100%;
 position: relative;
 perspective: 1000px; //子元素视距
 perspective-origin: 50% 150%; //子元素透视位置
 -webkit-perspective: 1000px;
 -webkit-perspective-origin: 50% 150%;
 margin: 0;
 padding: 0;
 .stack-item{
 background: #fff;
 height: 100%;
 width: 100%;
 border-radius: 4px;
 text-align: center;
 overflow: hidden;
 .stack-item img {
 width: 100%;
 display: block;
 pointer-events: none;
 /style 

上面只是一组静态代码,我们希望得到的是vue组件,所以需要先建立一个组件模板stack.vue,在模板中我们可以使用v-for,遍历出stack节点,使用:style 来修改各个item的style,代码如下

 template 
 li v-for="(item, index) in pages" : 
 img :src="item.src" 
 /li 
 /ul 
 /template 
 script 
export default {
 pro凡科抠图: {
 // pages数据包含基础的图片数据
 pages: {
 type: Array,
 default: []
 data () {
 return {
 // basicdata数据包含组件基本数据
 basicdata: {
 currentPage: 0 // 默认首图的序列
 // temporaryData数据包含组件临时数据
 temporaryData: {
 opacity: 1, // 记录opacity
 zIndex: 10, // 记录zIndex
 visible: 3 // 记录默认显示堆叠数visible
 methods: {
 // 遍历样式
 transform (index) {
 if (index = this.basicdata.currentPage) {
 let style = {}
 let visible = this.temporaryData.visible
 let perIndex = index - this.basicdata.currentPage
 // visible可见数量前滑块的样式
 if (index = this.basicdata.currentPage + visible - 1) {
 style['opacity'] = '1'
 style['transform'] = 'translate3D(0,0,' + -1 * perIndex * 60 + 'px' + ')'
 style['zIndex'] = visible - index + this.basicdata.currentPage
 style['transitionTimingFunction'] = 'ease'
 style['transitionDuration'] = 300 + 'ms'
 } else {
 style['zIndex'] = '-1'
 style['transform'] = 'translate3D(0,0,' + -1 * visible * 60 + 'px' + ')'
 return style
 /script 

关键点

:可以绑定对象的同时,也可以绑定数组和函数,这在遍历的时候很有用
最基本的dom结构已经构建完毕,下一步是让首张图片“动”起来

2. 图片滑动

图片滑动效果,在很多场景中都有出现,其原理无非是监听touchs事件,得到位移,再通过translate3D改变目标位移,因此我们要实现的步骤如下

对stack进行touchs事件的绑定 监听并储存手势位置变化的数值 改变首图css属性中translate3D的x,y值

#### 具体实现

在vue框架中,不建议直接操作节点,而是通过指令v-on对元素进行绑定,因此我们将绑定都写在v-for遍历里,通过index进行判断其是否是首图,再使用:style修改首页的样式,具体代码如下:

 template 
 li v-for="(item, index) in pages"
 : @touchstart.stop.capture="touchstart"
 @touchmove.stop.capture="touchmove"
 @touchend.stop.capture="touchend"
 @mousedown.stop.capture="touchstart"
 @mouseup.stop.capture="touchend"
 @mousemove.stop.capture="touchmove" 
 img :src="item.src" 
 /li 
 /ul 
 /template 
 script 
export default {
 pro凡科抠图: {
 // pages数据包含基础的图片数据
 pages: {
 type: Array,
 default: []
 data () {
 return {
 // basicdata数据包含组件基本数据
 basicdata: {
 start: {}, // 记录起始位置
 end: {}, // 记录终点位置
 currentPage: 0 // 默认首图的序列
 // temporaryData数据包含组件临时数据
 temporaryData: {
 poswidth: '', // 记录位移
 posheight: '', // 记录位移
 tracking: false // 是否在滑动,防止多次操作,影响体验
 methods: {
 touchstart (e) {
 if (this.temporaryData.tracking) {
 return
 // 是否为touch
 if (e.type === 'touchstart') {
 if (e.touches.length 1) {
 this.temporaryData.tracking = false
 return
 } else {
 // 记录起始位置
 this.basicdata.start.t = new Date().getTime()
 this.basicdata.start.x = e.targetTouches[0].clientX
 this.basicdata.start.y = e.targetTouches[0].clientY
 this.basicdata.end.x = e.targetTouches[0].clientX
 this.basicdata.end.y = e.targetTouches[0].clientY
 // pc操作
 } else {
 this.basicdata.start.t = new Date().getTime()
 this.basicdata.start.x = e.clientX
 this.basicdata.start.y = e.clientY
 this.basicdata.end.x = e.clientX
 this.basicdata.end.y = e.clientY
 this.temporaryData.tracking = true
 touchmove (e) {
 // 记录滑动位置
 if (this.temporaryData.tracking !this.temporaryData.animation) {
 if (e.type === 'touchmove') {
 this.basicdata.end.x = e.targetTouches[0].clientX
 this.basicdata.end.y = e.targetTouches[0].clientY
 } else {
 this.basicdata.end.x = e.clientX
 this.basicdata.end.y = e.clientY
 // 计算滑动值
 this.temporaryData.poswidth = this.basicdata.end.x - this.basicdata.start.x
 this.temporaryData.posheight = this.basicdata.end.y - this.basicdata.start.y
 touchend (e) {
 this.temporaryData.tracking = false
 // 滑动结束,触发判断
 // 非首页样式切换
 transform (index) {
 if (index this.basicdata.currentPage) {
 let style = {}
 let visible = 3
 let perIndex = index - this.basicdata.currentPage
 // visible可见数量前滑块的样式
 if (index = this.basicdata.currentPage + visible - 1) {
 style['opacity'] = '1'
 style['transform'] = 'translate3D(0,0,' + -1 * perIndex * 60 + 'px' + ')'
 style['zIndex'] = visible - index + this.basicdata.currentPage
 style['transitionTimingFunction'] = 'ease'
 style['transitionDuration'] = 300 + 'ms'
 } else {
 style['zIndex'] = '-1'
 style['transform'] = 'translate3D(0,0,' + -1 * visible * 60 + 'px' + ')'
 return style
 // 首页样式切换
 transformIndex (index) {
 // 处理3D效果
 if (index === this.basicdata.currentPage) {
 let style = {}
 style['transform'] = 'translate3D(' + this.temporaryData.poswidth + 'px' + ',' + this.temporaryData.posheight + 'px' + ',0px)'
 style['opacity'] = 1
 style['zIndex'] = 10
 return style
 /script 

3. 条件成功后的滑出,条件失败后的回弹

条件的触发判断是在touchend/mouseup后进行,在这里我们先用简单的条件进行判定,同时给予首图弹出及回弹的效果,代码如下

 template 
 li v-for="(item, index) in pages"
 : @touchmove.stop.capture="touchmove"
 @touchstart.stop.capture="touchstart"
 @touchend.stop.capture="touchend"
 @mousedown.stop.capture="touchstart"
 @mouseup.stop.capture="touchend"
 @mousemove.stop.capture="touchmove" 
 img :src="item.src" 
 /li 
 /ul 
 /template 
 script 
export default {
 pro凡科抠图: {
 // pages数据包含基础的图片数据
 pages: {
 type: Array,
 default: []
 data () {
 return {
 // basicdata数据包含组件基本数据
 basicdata: {
 start: {}, // 记录起始位置
 end: {}, // 记录终点位置
 currentPage: 0 // 默认首图的序列
 // temporaryData数据包含组件临时数据
 temporaryData: {
 poswidth: '', // 记录位移
 posheight: '', // 记录位移
 tracking: false, // 是否在滑动,防止多次操作,影响体验
 animation: false, // 首图是否启用动画效果,默认为否
 opacity: 1 // 记录首图透明度
 methods: {
 touchstart (e) {
 if (this.temporaryData.tracking) {
 return
 // 是否为touch
 if (e.type === 'touchstart') {
 if (e.touches.length 1) {
 this.temporaryData.tracking = false
 return
 } else {
 // 记录起始位置
 this.basicdata.start.t = new Date().getTime()
 this.basicdata.start.x = e.targetTouches[0].clientX
 this.basicdata.start.y = e.targetTouches[0].clientY
 this.basicdata.end.x = e.targetTouches[0].clientX
 this.basicdata.end.y = e.targetTouches[0].clientY
 // pc操作
 } else {
 this.basicdata.start.t = new Date().getTime()
 this.basicdata.start.x = e.clientX
 this.basicdata.start.y = e.clientY
 this.basicdata.end.x = e.clientX
 this.basicdata.end.y = e.clientY
 this.temporaryData.tracking = true
 this.temporaryData.animation = false
 touchmove (e) {
 // 记录滑动位置
 if (this.temporaryData.tracking !this.temporaryData.animation) {
 if (e.type === 'touchmove') {
 this.basicdata.end.x = e.targetTouches[0].clientX
 this.basicdata.end.y = e.targetTouches[0].clientY
 } else {
 this.basicdata.end.x = e.clientX
 this.basicdata.end.y = e.clientY
 // 计算滑动值
 this.temporaryData.poswidth = this.basicdata.end.x - this.basicdata.start.x
 this.temporaryData.posheight = this.basicdata.end.y - this.basicdata.start.y
 touchend (e) {
 this.temporaryData.tracking = false
 this.temporaryData.animation = true
 // 滑动结束,触发判断
 // 简单判断滑动宽度超出100像素时触发滑出
 if (Math.abs(this.temporaryData.poswidth) = 100) {
 // 最终位移简单设定为x轴200像素的偏移
 let ratio = Math.abs(this.temporaryData.posheight / this.temporaryData.poswidth)
 this.temporaryData.poswidth = this.temporaryData.poswidth = 0 this.temporaryData.poswidth + 200 : this.temporaryData.poswidth - 200
 this.temporaryData.posheight = this.temporaryData.posheight = 0 Math.abs(this.temporaryData.poswidth * ratio) : -Math.abs(this.temporaryData.poswidth * ratio)
 this.temporaryData.opacity = 0
 // 不满足条件则滑入
 } else {
 this.temporaryData.poswidth = 0
 this.temporaryData.posheight = 0
 // 非首页样式切换
 transform (index) {
 if (index this.basicdata.currentPage) {
 let style = {}
 let visible = 3
 let perIndex = index - this.basicdata.currentPage
 // visible可见数量前滑块的样式
 if (index = this.basicdata.currentPage + visible - 1) {
 style['opacity'] = '1'
 style['transform'] = 'translate3D(0,0,' + -1 * perIndex * 60 + 'px' + ')'
 style['zIndex'] = visible - index + this.basicdata.currentPage
 style['transitionTimingFunction'] = 'ease'
 style['transitionDuration'] = 300 + 'ms'
 } else {
 style['zIndex'] = '-1'
 style['transform'] = 'translate3D(0,0,' + -1 * visible * 60 + 'px' + ')'
 return style
 // 首页样式切换
 transformIndex (index) {
 // 处理3D效果
 if (index === this.basicdata.currentPage) {
 let style = {}
 style['transform'] = 'translate3D(' + this.temporaryData.poswidth + 'px' + ',' + this.temporaryData.posheight + 'px' + ',0px)'
 style['opacity'] = this.temporaryData.opacity
 style['zIndex'] = 10
 if (this.temporaryData.animation) {
 style['transitionTimingFunction'] = 'ease'
 style['transitionDuration'] = 300 + 'ms'
 return style
 /script 

4. 滑出后下一张图片堆叠到顶部

重新堆叠是组件最后一个功能,同时也是最重要和复杂的功能。在我们的代码里,stack-item的排序依赖绑定:style的transformIndex和transform函数,函数里判定的条件是currentPage,那是不是改变currentPage,让其+1,即可完成重新堆叠呢?

答案没有那么简单,因为我们滑出是动画效果,会进行300ms的时间,而currentPage变化引起的重排,会立即变化,打断动画的进行。因此我们需要先修改transform函数的排序条件,后改变currentPage。

#### 具体实现

修改transform函数排序条件 让currentPage+1 添加onTransitionEnd事件,在滑出结束后,重新放置stack列表中

lastPosHeight: '', // 记录上次最终位移 tracking: false, // 是否在滑动,防止多次操作,影响体验 animation: false, // 首图是否启用动画效果,默认为否 opacity: 1, // 记录首图透明度 swipe: false // onTransition判定条件 methods: { touchstart (e) { if (this.temporaryData.tracking) { return // 是否为touch if (e.type === 'touchstart') { if (e.touches.length 1) { this.temporaryData.tracking = false return } else { // 记录起始位置 this.basicdata.start.t = new Date().getTime() this.basicdata.start.x = e.targetTouches[0].clientX this.basicdata.start.y = e.targetTouches[0].clientY this.basicdata.end.x = e.targetTouches[0].clientX this.basicdata.end.y = e.targetTouches[0].clientY // pc操作 } else { this.basicdata.start.t = new Date().getTime() this.basicdata.start.x = e.clientX this.basicdata.start.y = e.clientY this.basicdata.end.x = e.clientX this.basicdata.end.y = e.clientY this.temporaryData.tracking = true this.temporaryData.animation = false touchmove (e) { // 记录滑动位置 if (this.temporaryData.tracking !this.temporaryData.animation) { if (e.type === 'touchmove') { this.basicdata.end.x = e.targetTouches[0].clientX this.basicdata.end.y = e.targetTouches[0].clientY } else { this.basicdata.end.x = e.clientX this.basicdata.end.y = e.clientY // 计算滑动值 this.temporaryData.poswidth = this.basicdata.end.x - this.basicdata.start.x this.temporaryData.posheight = this.basicdata.end.y - this.basicdata.start.y touchend (e) { this.temporaryData.tracking = false this.temporaryData.animation = true // 滑动结束,触发判断 // 简单判断滑动宽度超出100像素时触发滑出 if (Math.abs(this.temporaryData.poswidth) = 100) { // 最终位移简单设定为x轴200像素的偏移 let ratio = Math.abs(this.temporaryData.posheight / this.temporaryData.poswidth) this.temporaryData.poswidth = this.temporaryData.poswidth = 0 this.temporaryData.poswidth + 200 : this.temporaryData.poswidth - 200 this.temporaryData.posheight = this.temporaryData.posheight = 0 Math.abs(this.temporaryData.poswidth * ratio) : -Math.abs(this.temporaryData.poswidth * ratio) this.temporaryData.opacity = 0 this.temporaryData.swipe = true // 记录最终滑动距离 this.temporaryData.lastPosWidth = this.temporaryData.poswidth this.temporaryData.lastPosHeight = this.temporaryData.posheight // currentPage+1 引发排序变化 this.basicdata.currentPage += 1 // currentPage切换,整体dom进行变化,把第一层滑动置零 this.$nextTick(() = { this.temporaryData.poswidth = 0 this.temporaryData.posheight = 0 this.temporaryData.opacity = 1 // 不满足条件则滑入 } else { this.temporaryData.poswidth = 0 this.temporaryData.posheight = 0 this.temporaryData.swipe = false onTransitionEnd (index) { // dom发生变化后,正在执行的动画滑动序列已经变为上一层 if (this.temporaryData.swipe index === this.basicdata.currentPage - 1) { this.temporaryData.animation = true this.temporaryData.lastPosWidth = 0 this.temporaryData.lastPosHeight = 0 this.temporaryData.swipe = false // 非首页样式切换 transform (index) { if (index this.basicdata.currentPage) { let style = {} let visible = 3 let perIndex = index - this.basicdata.currentPage // visible可见数量前滑块的样式 if (index = this.basicdata.currentPage + visible - 1) { style['opacity'] = '1' style['transform'] = 'translate3D(0,0,' + -1 * perIndex * 60 + 'px' + ')' style['zIndex'] = visible - index + this.basicdata.currentPage style['transitionTimingFunction'] = 'ease' style['transitionDuration'] = 300 + 'ms' } else { style['zIndex'] = '-1' style['transform'] = 'translate3D(0,0,' + -1 * visible * 60 + 'px' + ')' return style // 已滑动模块释放后 } else if (index === this.basicdata.currentPage - 1) { let style = {} // 继续执行动画 style['transform'] = 'translate3D(' + this.temporaryData.lastPosWidth + 'px' + ',' + this.temporaryData.lastPosHeight + 'px' + ',0px)' style['opacity'] = '0' style['zIndex'] = '-1' style['transitionTimingFunction'] = 'ease' style['transitionDuration'] = 300 + 'ms' return style // 首页样式切换 transformIndex (index) { // 处理3D效果 if (index === this.basicdata.currentPage) { let style = {} style['transform'] = 'translate3D(' + this.temporaryData.poswidth + 'px' + ',' + this.temporaryData.posheight + 'px' + ',0px)' style['opacity'] = this.temporaryData.opacity style['zIndex'] = 10 if (this.temporaryData.animation) { style['transitionTimingFunction'] = 'ease' style['transitionDuration'] = 300 + 'ms' return style /script

ok~ 完成了上面的四步,堆叠组件的基本功能就已经实现,快来看看效果吧

 

堆叠滑动效果已经出来了,但是探探在体验上,还增加了触碰角度偏移,以及判定滑出面积比例

角度偏移的原理,是在用户每次进行touch时,记录用户触碰位置,计算出最大的偏移角度,在滑动出现位移时,线性增加角度以至最大的偏移角度。

使用在stack中具体要做的是:

touchmove中计算出所需角度和方向 touchend及onTransitionEnd中将角度至零

判定滑出面积比例,主要通过偏移量计算出偏移面积,从而得到面积比例,完成判断

完整的代码和demo可以在 上查看源码,这里就不贴出来了

谢谢大家看完这篇文章,喜欢可以在github上给个:star: ,最后祝大家在探探上都能找到前女友:green_heart:

总结

以上所述是小编给大家介绍的使用vue制作探探滑动组件的实例代码,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对凡科网站的支持!



收缩