You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
409 lines
10 KiB
Vue
409 lines
10 KiB
Vue
<template>
|
|
<view class="canvasBox">
|
|
<view class="box">
|
|
<view class="line"></view>
|
|
<view class="angle"></view>
|
|
</view>
|
|
<view class="box2" v-if="isUseTorch">
|
|
<view class="track" @click="openTrack">
|
|
<svg t="1653920715959" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg"
|
|
p-id="1351" width="32" height="32">
|
|
<path
|
|
d="M651.353043 550.479503H378.752795L240.862609 364.315031c-3.688944-4.897391-5.660621-10.876025-5.660621-17.045466v-60.040745c0-15.773416 12.847702-28.621118 28.621118-28.621118h502.459627c15.773416 0 28.621118 12.847702 28.621118 28.621118v59.977143c0 6.105839-1.971677 12.084472-5.660621 17.045466l-137.890187 186.228074zM378.752795 598.308571v398.024348c0 15.328199 12.402484 27.667081 27.667081 27.667081h217.266087c15.328199 0 27.667081-12.402484 27.66708-27.667081V598.308571H378.752795z m136.300124 176.942112c-14.564969 0-26.331429-11.76646-26.331428-26.331428v-81.283975c0-14.564969 11.76646-26.331429 26.331428-26.331429 14.564969 0 26.331429 11.76646 26.331429 26.331429v81.283975c0 14.564969-11.76646 26.331429-26.331429 26.331428zM512 222.608696c-17.554286 0-31.801242-14.246957-31.801242-31.801243V31.801242c0-17.554286 14.246957-31.801242 31.801242-31.801242s31.801242 14.246957 31.801242 31.801242v159.006211c0 17.554286-14.246957 31.801242-31.801242 31.801243zM280.932174 205.881242c-9.47677 0-18.889938-4.197764-25.122981-12.275279L158.242981 67.991056a31.864845 31.864845 0 0 1 5.597019-44.648944 31.864845 31.864845 0 0 1 44.648944 5.597018l97.502609 125.551305a31.864845 31.864845 0 0 1-5.597019 44.648944c-5.787826 4.579379-12.656894 6.741863-19.46236 6.741863zM723.987081 205.881242c-6.805466 0-13.674534-2.162484-19.462361-6.678261a31.794882 31.794882 0 0 1-5.597018-44.648944l97.566211-125.551304a31.794882 31.794882 0 0 1 44.648944-5.597019 31.794882 31.794882 0 0 1 5.597019 44.648944l-97.566211 125.551305c-6.360248 8.077516-15.709814 12.27528-25.186584 12.275279z"
|
|
fill="#ffffff" p-id="1352"></path>
|
|
</svg>
|
|
{{ trackStatus ? '关闭闪光灯' : '打开闪光灯' }}
|
|
</view>
|
|
</view>
|
|
<view class="mask1 mask" :style="'height:' + maskHeight + 'px;'"></view>
|
|
<view class="mask2 mask" :style="'width:' + maskWidth + 'px;top:' + maskHeight + 'px'"></view>
|
|
<view class="mask3 mask" :style="'height:' + maskHeight + 'px;'"></view>
|
|
<view class="mask4 mask" :style="'width:' + maskWidth + 'px;top:' + maskHeight + 'px'"></view>
|
|
</view>
|
|
</template>
|
|
<script>
|
|
import * as Quagga from './quagga.min.js'
|
|
export default {
|
|
props: {
|
|
continue: {
|
|
type: Boolean,
|
|
default: false // false 监听一次 true 持续监听
|
|
},
|
|
exact: {
|
|
type: String,
|
|
default: 'environment' // environment 后摄像头 user 前摄像头
|
|
},
|
|
definition: {
|
|
type: Boolean,
|
|
default: false // fasle 正常 true 高清
|
|
},
|
|
readers: {
|
|
// 一维码类型
|
|
type: Array,
|
|
default: () => ['code_128_reader']
|
|
}
|
|
},
|
|
data() {
|
|
return {
|
|
windowWidth: 0,
|
|
windowHeight: 0,
|
|
video: null,
|
|
canvas2d: null,
|
|
canvasDom: null,
|
|
canvasDom2: null, // 用于画框
|
|
canvas2d2: null,
|
|
canvasWidth: 300,
|
|
canvasHeight: 200,
|
|
maskWidth: 0,
|
|
maskHeight: 0,
|
|
cpu: 1,
|
|
inter: 0,
|
|
|
|
track: null,
|
|
isUseTorch: false,
|
|
trackStatus: false,
|
|
|
|
isParse: false,
|
|
|
|
data1: '',
|
|
data2: ''
|
|
}
|
|
},
|
|
mounted() {
|
|
if (origin.indexOf('https') === -1) throw '请在 https 环境中使用摄像头组件。'
|
|
|
|
this.windowWidth = document.documentElement.clientWidth || document.body.clientWidth
|
|
this.windowHeight = document.documentElement.clientHeight || document.body.clientHeight
|
|
this.isParse = true
|
|
this.$nextTick(() => {
|
|
this.video = document.createElement('video')
|
|
this.video.width = this.windowWidth
|
|
this.video.height = this.windowHeight
|
|
|
|
const canvas = document.createElement('canvas')
|
|
this.canvas = canvas
|
|
canvas.id = 'canvas'
|
|
canvas.width = this.canvasWidth
|
|
canvas.height = this.canvasHeight
|
|
canvas.style = 'display:none;'
|
|
|
|
// 设置当前宽高 满屏
|
|
const canvasBox = document.querySelector('.canvasBox')
|
|
canvasBox.append(this.video)
|
|
canvasBox.append(canvas)
|
|
canvasBox.style = `width:${this.windowWidth}px;height:${this.windowHeight}px;`
|
|
|
|
this.canvas2d = canvas.getContext('2d')
|
|
|
|
// 创建第二个canvas
|
|
const canvas2 = document.createElement('canvas')
|
|
this.canvas2 = canvas2
|
|
canvas2.id = 'canvas2'
|
|
canvas2.width = this.canvasWidth
|
|
canvas2.height = this.canvasHeight
|
|
canvas2.style =
|
|
'position: absolute;top: 50%;left: 50%;z-index: 20;transform: translate(-50%, -50%);'
|
|
this.canvas2d2 = canvas2.getContext('2d')
|
|
canvasBox.append(canvas2)
|
|
|
|
this.cpu = 1 // navigator.hardwareConcurrency || 1
|
|
// console.log(navigator.hardwareConcurrency )
|
|
|
|
this.createMsk()
|
|
setTimeout(() => {
|
|
this.openScan()
|
|
}, 500)
|
|
})
|
|
},
|
|
methods: {
|
|
openScan() {
|
|
let width = this.transtion(this.windowHeight)
|
|
let height = this.transtion(this.windowWidth)
|
|
|
|
const videoParam = {
|
|
audio: false,
|
|
video: {
|
|
facingMode: {
|
|
exact: this.exact
|
|
},
|
|
width,
|
|
height
|
|
}
|
|
}
|
|
|
|
navigator.mediaDevices
|
|
.getUserMedia(videoParam)
|
|
.then(stream => {
|
|
this.video.srcObject = stream
|
|
this.video.setAttribute('playsinline', true)
|
|
this.video.play()
|
|
this.tick()
|
|
|
|
this.track = stream.getVideoTracks()[0]
|
|
setTimeout(() => {
|
|
this.isUseTorch = this.track.getCapabilities().torch || null
|
|
}, 500)
|
|
})
|
|
.catch(err => {
|
|
console.log('设备不支持', err)
|
|
})
|
|
},
|
|
tick() {
|
|
if (!this.isParse) return
|
|
try {
|
|
if (this.video.readyState === this.video.HAVE_ENOUGH_DATA) {
|
|
this.canvas2d.drawImage(
|
|
this.video,
|
|
this.transtion(this.maskWidth),
|
|
this.transtion(this.maskHeight),
|
|
this.transtion(300),
|
|
this.transtion(200),
|
|
0,
|
|
0,
|
|
this.canvasWidth,
|
|
this.canvasHeight
|
|
)
|
|
const img = this.canvas.toDataURL('image/jpg')
|
|
|
|
Quagga.decodeSingle({
|
|
inputStream: {
|
|
size: 300 * 2
|
|
},
|
|
locator: {
|
|
patchSize: 'large',
|
|
halfSample: true
|
|
},
|
|
numOfWorkers: this.cpu,
|
|
decoder: {
|
|
readers: this.readers
|
|
},
|
|
locate: true,
|
|
src: img
|
|
},
|
|
result => {
|
|
this.canvas2d2.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
|
|
requestAnimationFrame(this.tick)
|
|
if (!result || !result.codeResult) return
|
|
|
|
if (!this.data1) return (this.data1 = result.codeResult.code)
|
|
this.data2 = result.codeResult.code
|
|
console.log(this.data1, '-', this.data2)
|
|
if (this.data2 !== this.data1) return (this.data1 = '')
|
|
this.drawLine(result.box, result.line)
|
|
if (!this.continue) {
|
|
this.closeCamera()
|
|
}
|
|
this.$emit('success', result.codeResult.code)
|
|
}
|
|
)
|
|
} else {
|
|
requestAnimationFrame(this.tick)
|
|
}
|
|
} catch (e) {
|
|
console.log('出错了');
|
|
requestAnimationFrame(this.tick)
|
|
}
|
|
},
|
|
|
|
drawLine(box, line) {
|
|
if (!line[0] || !line[0]['x']) return
|
|
this.canvas2d2.beginPath()
|
|
this.canvas2d2.moveTo(line[0]['x'] / 2, line[0]['y'] / 2)
|
|
this.canvas2d2.lineTo(line[1]['x'] / 2, line[1]['y'] / 2)
|
|
this.canvas2d2.lineWidth = 2
|
|
this.canvas2d2.strokeStyle = '#FF3B58'
|
|
this.canvas2d2.stroke()
|
|
},
|
|
|
|
createMsk() {
|
|
this.maskWidth = this.windowWidth / 2 - 150
|
|
this.maskHeight = this.windowHeight / 2 - 100
|
|
},
|
|
closeCamera() {
|
|
this.isParse = false
|
|
if (this.video.srcObject) {
|
|
this.video.srcObject.getTracks().forEach(track => {
|
|
track.stop()
|
|
})
|
|
}
|
|
},
|
|
|
|
transtion(number) {
|
|
return this.definition ? number * 2.6 : number * 1.6
|
|
},
|
|
|
|
openTrack() {
|
|
this.trackStatus = !this.trackStatus
|
|
this.track.applyConstraints({
|
|
advanced: [{
|
|
torch: this.trackStatus
|
|
}]
|
|
})
|
|
}
|
|
},
|
|
beforeDestroy() {
|
|
this.closeCamera()
|
|
}
|
|
}
|
|
</script>
|
|
<style scoped>
|
|
/* page {
|
|
background-color: #333333;
|
|
}*/
|
|
|
|
.canvasBox {
|
|
width: 100vw;
|
|
position: relative;
|
|
|
|
background-image: linear-gradient(0deg,
|
|
transparent 24%,
|
|
rgba(32, 255, 77, 0.1) 25%,
|
|
rgba(32, 255, 77, 0.1) 26%,
|
|
transparent 27%,
|
|
transparent 74%,
|
|
rgba(32, 255, 77, 0.1) 75%,
|
|
rgba(32, 255, 77, 0.1) 76%,
|
|
transparent 77%,
|
|
transparent),
|
|
linear-gradient(90deg,
|
|
transparent 24%,
|
|
rgba(32, 255, 77, 0.1) 25%,
|
|
rgba(32, 255, 77, 0.1) 26%,
|
|
transparent 27%,
|
|
transparent 74%,
|
|
rgba(32, 255, 77, 0.1) 75%,
|
|
rgba(32, 255, 77, 0.1) 76%,
|
|
transparent 77%,
|
|
transparent);
|
|
background-size: 3rem 3rem;
|
|
background-position: -1rem -1rem;
|
|
z-index: 10;
|
|
background-color: #1110;
|
|
}
|
|
|
|
.box {
|
|
width: 300px;
|
|
height: 200px;
|
|
position: absolute;
|
|
left: 50%;
|
|
top: 50%;
|
|
transform: translate(-50%, -50%);
|
|
overflow: hidden;
|
|
border: 0.1rem solid rgba(0, 255, 51, 0.2);
|
|
z-index: 11;
|
|
}
|
|
|
|
.line {
|
|
height: calc(100% - 2px);
|
|
width: 100%;
|
|
background: linear-gradient(180deg, rgba(0, 255, 51, 0) 43%, #00ff33 211%);
|
|
border-bottom: 3px solid #00ff33;
|
|
transform: translateY(-100%);
|
|
animation: radar-beam 2s infinite alternate;
|
|
animation-timing-function: cubic-bezier(0.53, 0, 0.43, 0.99);
|
|
animation-delay: 1.4s;
|
|
}
|
|
|
|
.box2 {
|
|
width: 300px;
|
|
height: 200px;
|
|
position: absolute;
|
|
left: 50%;
|
|
top: 50%;
|
|
transform: translate(-50%, -50%);
|
|
z-index: 20;
|
|
}
|
|
|
|
.track {
|
|
position: absolute;
|
|
bottom: -100px;
|
|
left: 50%;
|
|
transform: translateX(-50%);
|
|
z-index: 20;
|
|
color: #fff;
|
|
display: flex;
|
|
flex-direction: column;
|
|
align-items: center;
|
|
}
|
|
|
|
.box:after,
|
|
.box:before,
|
|
.angle:after,
|
|
.angle:before {
|
|
content: '';
|
|
display: block;
|
|
position: absolute;
|
|
width: 3vw;
|
|
height: 3vw;
|
|
z-index: 12;
|
|
border: 0.2rem solid transparent;
|
|
}
|
|
|
|
.box:after,
|
|
.box:before {
|
|
top: 0;
|
|
border-top-color: #00ff33;
|
|
}
|
|
|
|
.angle:after,
|
|
.angle:before {
|
|
bottom: 0;
|
|
border-bottom-color: #00ff33;
|
|
}
|
|
|
|
.box:before,
|
|
.angle:before {
|
|
left: 0;
|
|
border-left-color: #00ff33;
|
|
}
|
|
|
|
.box:after,
|
|
.angle:after {
|
|
right: 0;
|
|
border-right-color: #00ff33;
|
|
}
|
|
|
|
@keyframes radar-beam {
|
|
0% {
|
|
transform: translateY(-100%);
|
|
}
|
|
|
|
100% {
|
|
transform: translateY(0);
|
|
}
|
|
}
|
|
|
|
.msg {
|
|
text-align: center;
|
|
padding: 20rpx 0;
|
|
}
|
|
|
|
.mask {
|
|
position: absolute;
|
|
z-index: 10;
|
|
background-color: rgba(0, 0, 0, 0.55);
|
|
}
|
|
|
|
.mask1 {
|
|
top: 0;
|
|
left: 0;
|
|
right: 0;
|
|
}
|
|
|
|
.mask2 {
|
|
right: 0;
|
|
height: 200px;
|
|
}
|
|
|
|
.mask3 {
|
|
right: 0;
|
|
left: 0;
|
|
bottom: 0;
|
|
}
|
|
|
|
.mask4 {
|
|
left: 0;
|
|
height: 200px;
|
|
}
|
|
</style>
|