vue3实现旋转图片验证
本文实例为大家分享了vue3实现旋转图片验证的具体代码,供大家参考,具体内容如下
一、前言
一个突发奇想的创作。
二、代码
<template> <el-dialog v-model="dialogVisible" width="15%" :before-close="handleClose"> <el-image :src="imageUrl" :style="xuanzhuan" class="w-full flex justify-center rounded-full overflow-hidden"> <template #error> <div class="image-slot"> <i class="el-icon-picture-outline text-3xl"></i> </div> </template> </el-image> <template #footer> <div class="w-full mx-1 my-1 h-8 bg-gray-300 relative"> <i @mousedown="rangeMove" :style="leftnum" class="el-icon-d-arrow-right h-8 w-8 bg-white border absolute top-0 bottom-0 flex justify-center items-center cursor-pointer select-none"></i> </div> <div class="w-full flex justify-evenly"> <el-button @click="chongzhi()">重置</el-button> <el-button type="primary" @click="tijiao()">确定</el-button> </div> </template> </el-dialog> </template> <script lang="ts"> import {computed, defineComponent, ref} from "vue"; export default defineComponent({ name:"xuanzhuan", setup(prop,content) { // 左侧距离和移动距离 const disX = ref(0) const leftnum = computed(()=>{ return `left: ${disX.value}px` }) // 角度和 旋转角度 const jiaodu = ref(0) const xuanzhuan = computed(()=>{ return `transform:rotate(${jiaodu.value}deg);` }) const dialogVisible = ref(false) const imageUrl = ref("http://1812.img.pp.sohu.com.cn/images/blog/2009/11/18/18/8/125b6560a6ag214.jpg") function getimage(){ console.log("向后台获取图片") } function init(){ dialogVisible.value = true getimage() } function handleClose(){ jiaodu.value = 0 disX.value = 0 imageUrl.value = "" dialogVisible.value = false } function rangeMove(e:any){ let ele = e.target; let startX = e.clientX - disX.value; let eleWidth = ele.offsetWidth; let parentWidth = ele.parentElement.offsetWidth; let MaxX = parentWidth - eleWidth; document.onmousemove = (e)=>{ let endX = e.clientX; disX.value = endX - startX; if(disX.value<=0){ disX.value = 0; }else if(disX.value>=MaxX){ //减去滑块的宽度,体验效果更好 disX.value = MaxX; } // 计算滑动距离与全长的比例 const bili = disX.value / (MaxX-eleWidth) // 用比例乘以360度,就是旋转角度 jiaodu.value = bili * 360 } document.onmouseup=()=>{ document.onmousemove = null; document.onmouseup = null; } } // 逐步减少,看上去好看点 function jianshao(disbuchang:number,jiaobubuchang:number){ jiaodu.value = jiaodu.value - jiaobubuchang disX.value = disX.value - disbuchang if(disX.value <=0 ){ jiaodu.value = 0 disX.value = 0 } } // 点击重置,使用异步方法,逐步回到原点 function chongzhi(){ const disbuchang = 50 const jiaobubuchang = disbuchang/disX.value * jiaodu.value const mandian = setInterval(()=>{ if(disX.value == 0){ clearInterval(mandian) }else{ jianshao(disbuchang,jiaobubuchang) } },10) } // 点击确定 function tijiao(){ if(disX.value == 0){ return } console.log("后端验证成功") // 成功后,触发父组件方法。 content.emit("get") } return { handleClose, imageUrl, dialogVisible, init, rangeMove, leftnum, xuanzhuan, chongzhi, tijiao, } }, components:{}, }) </script> <style scoped> </style>
css用的是tailwindcss,
三.使用方法
<xuanzhuan ref="myxuanzhuan" @get="chenggong"></xuanzhuan> setup(prop,content) { const myxuanzhuan:any = ref(null) function ceshi(){ myxuanzhuan.value.init() } function chenggong(){ console.log("成功的回调") } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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