282 lines
6.6 KiB
Vue
282 lines
6.6 KiB
Vue
<template>
|
||
<view class="cc-page">
|
||
<!-- 摄像头预览区（WebRTC） -->
|
||
<view class="cc-camera-wrap">
|
||
<video id="ccVideo" class="cc-video" autoplay playsinline muted></video>
|
||
<canvas id="ccCanvas" class="cc-canvas" style="display:none;"></canvas>
|
||
<view class="cc-camera-hint" v-if="!ctxReady">
|
||
<text class="cc-hint-text">{{ hintText }}</text>
|
||
</view>
|
||
</view>
|
||
|
||
<!-- 已拍照九宫格 -->
|
||
<view class="cc-thumb-bar">
|
||
<view class="cc-thumb-count" v-if="capturedList.length > 0">已拍 {{ capturedList.length }} 张</view>
|
||
<view class="cc-thumb-list">
|
||
<view class="cc-thumb-item" v-for="(img, idx) in capturedList" :key="idx">
|
||
<image class="cc-thumb-img" :src="img" mode="aspectFill"></image>
|
||
<view class="cc-thumb-del" @click.stop="deletePhoto(idx)">
|
||
<text class="cc-del-icon">✕</text>
|
||
</view>
|
||
</view>
|
||
<view class="cc-thumb-item cc-thumb-placeholder" v-for="n in (9 - capturedList.length)" :key="'p'+n">
|
||
</view>
|
||
</view>
|
||
</view>
|
||
|
||
<!-- 底部操作区 -->
|
||
<view class="cc-footer">
|
||
<view class="cc-capture-btn" @click="capturePhoto" :class="{ disabled: capturedList.length >= 9 }">
|
||
<view class="cc-capture-inner"></view>
|
||
</view>
|
||
<view class="cc-confirm-btn" @click="confirmCapture" :class="{ disabled: capturedList.length === 0 }">
|
||
<text class="cc-confirm-text">确认 ({{ capturedList.length }})</text>
|
||
</view>
|
||
</view>
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
export default {
|
||
data() {
|
||
return {
|
||
capturedList: [],
|
||
mediaStream: null,
|
||
ctxReady: false,
|
||
hintText: '摄像头启动中...'
|
||
}
|
||
},
|
||
onReady() {
|
||
this.startCamera()
|
||
},
|
||
onUnload() {
|
||
this.stopCamera()
|
||
},
|
||
methods: {
|
||
startCamera() {
|
||
var that = this
|
||
this.hintText = '摄像头启动中...'
|
||
try {
|
||
setTimeout(function() {
|
||
var video = document.getElementById('ccVideo')
|
||
if (!video) {
|
||
that.hintText = '视频组件加载失败'
|
||
return
|
||
}
|
||
navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment', width: 1280, height: 720 } })
|
||
.then(function(stream) {
|
||
that.mediaStream = stream
|
||
video.srcObject = stream
|
||
video.play()
|
||
that.ctxReady = true
|
||
that.hintText = ''
|
||
console.log('摄像头已就绪(WebRTC)')
|
||
})
|
||
.catch(function(err) {
|
||
console.error('getUserMedia失败:', err)
|
||
that.hintText = '摄像头访问被拒绝: ' + (err.message || '')
|
||
})
|
||
}, 500)
|
||
} catch (e) {
|
||
console.error('摄像头启动异常:', e)
|
||
this.hintText = '摄像头启动异常'
|
||
}
|
||
},
|
||
stopCamera() {
|
||
if (this.mediaStream) {
|
||
var tracks = this.mediaStream.getTracks()
|
||
for (var i = 0; i < tracks.length; i++) {
|
||
tracks[i].stop()
|
||
}
|
||
this.mediaStream = null
|
||
}
|
||
},
|
||
capturePhoto() {
|
||
if (this.capturedList.length >= 9) {
|
||
uni.showToast({ title: '最多拍9张', icon: 'none' })
|
||
return
|
||
}
|
||
// 用 canvas 截取 video 帧
|
||
var video = document.getElementById('ccVideo')
|
||
var canvas = document.getElementById('ccCanvas')
|
||
if (!video || !canvas) {
|
||
uni.showToast({ title: '拍照失败', icon: 'none' })
|
||
return
|
||
}
|
||
canvas.width = video.videoWidth || 1280
|
||
canvas.height = video.videoHeight || 720
|
||
var ctx = canvas.getContext('2d')
|
||
ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
|
||
// 转 blob 后生成本地临时文件路径
|
||
var that = this
|
||
canvas.toBlob(function(blob) {
|
||
if (!blob) {
|
||
// fallback: data url
|
||
var dataUrl = canvas.toDataURL('image/jpeg', 0.85)
|
||
that.capturedList.push(dataUrl)
|
||
return
|
||
}
|
||
// 用 FileReader 读 blob 为 dataUrl，走 uni.saveFile
|
||
var reader = new FileReader()
|
||
reader.onloadend = function() {
|
||
var base64 = reader.result
|
||
if (base64) {
|
||
// 直接存 base64 data url
|
||
that.capturedList.push(base64)
|
||
}
|
||
}
|
||
reader.readAsDataURL(blob)
|
||
}, 'image/jpeg', 0.85)
|
||
},
|
||
deletePhoto(idx) {
|
||
this.capturedList.splice(idx, 1)
|
||
},
|
||
confirmCapture() {
|
||
if (this.capturedList.length === 0) {
|
||
uni.showToast({ title: '请先拍照', icon: 'none' })
|
||
return
|
||
}
|
||
// 停止摄像头
|
||
this.stopCamera()
|
||
var pages = getCurrentPages()
|
||
var prevPage = pages[pages.length - 2]
|
||
if (prevPage) {
|
||
prevPage.$vm.capturedPhotoList = this.capturedList
|
||
}
|
||
uni.navigateBack()
|
||
}
|
||
}
|
||
}
|
||
</script>
|
||
|
||
<style>
|
||
.cc-page {
|
||
display: flex;
|
||
flex-direction: column;
|
||
height: 100vh;
|
||
background: #000;
|
||
overflow: hidden;
|
||
}
|
||
.cc-camera-wrap {
|
||
flex: 1;
|
||
position: relative;
|
||
overflow: hidden;
|
||
background: #111;
|
||
}
|
||
.cc-video {
|
||
width: 100%;
|
||
height: 100%;
|
||
object-fit: cover;
|
||
}
|
||
.cc-canvas {
|
||
display: none;
|
||
}
|
||
.cc-camera-hint {
|
||
position: absolute;
|
||
top: 0;
|
||
left: 0;
|
||
right: 0;
|
||
bottom: 0;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
background: #111;
|
||
padding: 40rpx;
|
||
}
|
||
.cc-hint-text {
|
||
color: #999;
|
||
font-size: 28rpx;
|
||
text-align: center;
|
||
}
|
||
.cc-thumb-bar {
|
||
background: #1a1a1a;
|
||
padding: 16rpx 20rpx;
|
||
}
|
||
.cc-thumb-count {
|
||
color: #999;
|
||
font-size: 22rpx;
|
||
margin-bottom: 12rpx;
|
||
}
|
||
.cc-thumb-list {
|
||
display: flex;
|
||
flex-wrap: wrap;
|
||
gap: 10rpx;
|
||
}
|
||
.cc-thumb-item {
|
||
width: 100rpx;
|
||
height: 100rpx;
|
||
border-radius: 10rpx;
|
||
overflow: hidden;
|
||
position: relative;
|
||
background: #333;
|
||
}
|
||
.cc-thumb-img {
|
||
width: 100%;
|
||
height: 100%;
|
||
}
|
||
.cc-thumb-del {
|
||
position: absolute;
|
||
top: -6rpx;
|
||
right: -6rpx;
|
||
width: 32rpx;
|
||
height: 32rpx;
|
||
border-radius: 50%;
|
||
background: rgba(0,0,0,0.6);
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
}
|
||
.cc-del-icon {
|
||
color: #fff;
|
||
font-size: 18rpx;
|
||
}
|
||
.cc-thumb-placeholder {
|
||
border: 2rpx dashed #444;
|
||
box-sizing: border-box;
|
||
}
|
||
.cc-footer {
|
||
display: flex;
|
||
justify-content: center;
|
||
align-items: center;
|
||
padding: 30rpx 40rpx;
|
||
padding-bottom: calc(30rpx + constant(safe-area-inset-bottom));
|
||
padding-bottom: calc(30rpx + env(safe-area-inset-bottom));
|
||
background: #1a1a1a;
|
||
gap: 60rpx;
|
||
}
|
||
.cc-capture-btn {
|
||
width: 80rpx;
|
||
height: 80rpx;
|
||
border-radius: 50%;
|
||
border: 6rpx solid #fff;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
}
|
||
.cc-capture-inner {
|
||
width: 64rpx;
|
||
height: 64rpx;
|
||
border-radius: 50%;
|
||
background: #fff;
|
||
}
|
||
.cc-capture-btn:active .cc-capture-inner {
|
||
background: #ccc;
|
||
}
|
||
.cc-capture-btn.disabled {
|
||
opacity: 0.4;
|
||
}
|
||
.cc-confirm-btn {
|
||
padding: 18rpx 40rpx;
|
||
border-radius: 40rpx;
|
||
background: #409eff;
|
||
}
|
||
.cc-confirm-btn.disabled {
|
||
background: #555;
|
||
}
|
||
.cc-confirm-text {
|
||
color: #fff;
|
||
font-size: 28rpx;
|
||
font-weight: bold;
|
||
}
|
||
</style>
|