<template>
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<div class="scan" style="height: 100%; width: 100%;">
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<qrcode-stream v-show="isShow" :camera="camera" @decode="onDecode" @init="onInit"
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style="height: 100%;">
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<div>
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<div class="qr-scanner">
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<div style="display: flex;justify-content: end;">
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<el-button plain @click="switchCamera">反转相机</el-button>
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<el-button plain @click="cancelCode">退出扫码</el-button>
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</div>
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<div class="box">
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<div class="line"></div>
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<div class="angle"></div>
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</div>
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</div>
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</div>
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</qrcode-stream>
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</div>
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</template>
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<script>
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// 引入
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import { QrcodeStream } from "vue-qrcode-reader";
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export default {
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name: "codeCompont",
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// 注册
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components: { QrcodeStream },
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data() {
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return {
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isShow: true,
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camera: "front",
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result: "", // 扫码结果信息
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error: "" // 错误信息
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};
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},
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created() { },
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methods: {
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openCamera(){
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this.camera="rear"
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},
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//回调扫描结果
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onDecode(result) {
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if (result !== "") {
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this.result=result
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this.$emit("ok",this.result)
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this.cancelCode()
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}
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},
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// 相机反转
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switchCamera() {
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switch (this.camera) {
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//前置
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case 'front':
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//转后置
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this.camera = 'rear'
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break
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//反之
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case 'rear':
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this.camera = 'front'
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break
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default:
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this.$toast('错误')
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}
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},
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// 关闭相机
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turnCameraOff() {
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this.camera = 'off'
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},
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cancelCode() {
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this.turnCameraOff()
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this.$emit("cancelCodeDialog")
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},
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// 检查是否调用摄像头
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async onInit(promise) {
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try {
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const { capabilities } = await promise;
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} catch (error) {
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this.$toast(error.name);
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if (error.name === "NotAllowedError") {
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this.error = "ERROR: 您需要授予相机访问权限";
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} else if (error.name === "NotFoundError") {
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this.error = "ERROR: 这个设备上没有摄像头";
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} else if (error.name === "NotSupportedError") {
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this.error = "ERROR: 所需的安全上下文(HTTPS、本地主机)";
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} else if (error.name === "NotReadableError") {
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this.error = "ERROR: 相机被占用";
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} else if (error.name === "OverconstrainedError") {
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this.error = "ERROR: 安装摄像头不合适";
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} else if (error.name === "StreamApiNotSupportedError") {
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this.error = "ERROR: 此浏览器不支持流API";
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} else if (error.name === "InsecureContextError") {
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this.error =
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"ERROR: 仅允许在安全上下文中访问摄像机。使用HTTPS或本地主机，而不是HTTP。";
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} else {
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this.error = "ERROR:摄像机错误";
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}
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this.$emit("err", this.error);
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}
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}
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},
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watch: {
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}
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};
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</script>
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<style scoped>
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.error {
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font-weight: bold;
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color: red;
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}
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</style>
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<style scoped>
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.scan {
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width: 100%;
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height: 100%;
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border-color: #585858;
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position: fixed;
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top: 0;
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left: 0;
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}
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.qrcode-stream-camera {
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width: 100%;
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height: 100%;
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display: block;
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-o-object-fit: cover;
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object-fit: cover;
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position: absolute;
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top: 0%;
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left: 0%;
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}
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.qr-scanner {
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background-image: linear-gradient(0deg,
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transparent 24%,
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rgba(32, 255, 77, 0.1) 25%,
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rgba(32, 255, 77, 0.1) 26%,
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transparent 27%,
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transparent 74%,
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rgba(32, 255, 77, 0.1) 75%,
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rgba(32, 255, 77, 0.1) 76%,
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transparent 77%,
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transparent),
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linear-gradient(90deg,
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transparent 24%,
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rgba(32, 255, 77, 0.1) 25%,
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rgba(32, 255, 77, 0.1) 26%,
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transparent 27%,
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transparent 74%,
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rgba(32, 255, 77, 0.1) 75%,
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rgba(32, 255, 77, 0.1) 76%,
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transparent 77%,
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transparent);
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background-size: 3rem 3rem;
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background-position: -1rem -1rem;
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width: 100%;
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/* height: 100%; */
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height: 100vh;
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position: relative;
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/* background-color: #1110;*/
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/* background-color: #111; */
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}
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.qr-scanner .box {
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width: 213px;
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height: 213px;
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position: absolute;
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left: 50%;
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top: 50%;
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transform: translate(-50%, -50%);
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overflow: hidden;
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border: 0.1rem solid rgba(0, 255, 51, 0.2);
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/* background: url('http://resource.beige.world/imgs/gongconghao.png') no-repeat center center; */
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}
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.qr-scanner .line {
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height: calc(100% - 2px);
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width: 100%;
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/* background: linear-gradient(180deg, rgba(0, 255, 51, 0) 43%, #00ff33 211%); */
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border-bottom: 3px solid #00ff33;
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transform: translateY(-100%);
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animation: radar-beam 2s infinite alternate;
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animation-timing-function: cubic-bezier(0.53, 0, 0.43, 0.99);
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animation-delay: 1.4s;
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}
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.qr-scanner .box:after,
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.qr-scanner .box:before,
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.qr-scanner .angle:after,
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.qr-scanner .angle:before {
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content: "";
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display: block;
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position: absolute;
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width: 3vw;
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height: 3vw;
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border: 0.2rem solid transparent;
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}
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.qr-scanner .box:after,
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.qr-scanner .box:before {
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top: 0;
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border-top-color: #00ff33;
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}
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.qr-scanner .angle:after,
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.qr-scanner .angle:before {
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bottom: 0;
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border-bottom-color: #00ff33;
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}
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.qr-scanner .box:before,
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.qr-scanner .angle:before {
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left: 0;
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border-left-color: #00ff33;
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}
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.qr-scanner .box:after,
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.qr-scanner .angle:after {
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right: 0;
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border-right-color: #00ff33;
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}
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@keyframes radar-beam {
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0% {
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transform: translateY(-100%);
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}
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100% {
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transform: translateY(0);
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}
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}
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</style>
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