299 lines
6.9 KiB
Vue
299 lines
6.9 KiB
Vue
<template>
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<view class="cc-page">
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<!-- 摄像头预览区 -->
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<view class="cc-camera-wrap">
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<video id="ccVideo" ref="ccVideo" class="cc-video" autoplay playsinline muted v-if="useWebRTC"></video>
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<view class="cc-camera-hint" v-if="!useWebRTC">
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<text class="cc-hint-text">点击拍照按钮调用系统相机</text>
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</view>
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<canvas id="ccCanvas" ref="ccCanvas" class="cc-canvas" style="display:none;"></canvas>
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</view>
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<!-- 已拍照九宫格 -->
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<view class="cc-thumb-bar">
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<view class="cc-thumb-count" v-if="capturedList.length > 0">已拍 {{ capturedList.length }} 张</view>
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<view class="cc-thumb-list">
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<view class="cc-thumb-item" v-for="(img, idx) in capturedList" :key="idx">
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<image class="cc-thumb-img" :src="img" mode="aspectFill"></image>
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<view class="cc-thumb-del" @click.stop="deletePhoto(idx)">
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<text class="cc-del-icon">✕</text>
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</view>
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</view>
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<view class="cc-thumb-item cc-thumb-placeholder" v-for="n in (9 - capturedList.length)" :key="'p'+n">
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</view>
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</view>
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</view>
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<!-- 底部操作区 -->
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<view class="cc-footer">
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<view class="cc-capture-btn" @click="capturePhoto" :class="{ disabled: capturedList.length >= 9 }">
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<view class="cc-capture-inner"></view>
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</view>
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<view class="cc-confirm-btn" @click="confirmCapture" :class="{ disabled: capturedList.length === 0 }">
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<text class="cc-confirm-text">确认 ({{ capturedList.length }})</text>
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</view>
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</view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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capturedList: [],
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mediaStream: null,
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ctxReady: false,
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useWebRTC: false
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}
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},
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onReady() {
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this.checkEnvironment()
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},
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onUnload() {
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this.stopCamera()
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},
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methods: {
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// 检测运行环境
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checkEnvironment() {
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// H5 环境：document 存在且 getUserMedia 可用
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try {
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if (typeof document !== 'undefined' && typeof navigator !== 'undefined' && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
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this.useWebRTC = true
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this.startWebRTC()
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} else {
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this.useWebRTC = false
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this.ctxReady = true
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}
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} catch (e) {
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this.useWebRTC = false
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this.ctxReady = true
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}
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},
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// WebRTC 启动摄像头（H5 环境）
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startWebRTC() {
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var that = this
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try {
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if (typeof document === 'undefined') {
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this.ctxReady = true
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return
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}
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var video = document.getElementById('ccVideo')
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if (!video) {
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this.ctxReady = true
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return
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}
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navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment', width: 1280, height: 720 } })
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.then(function(stream) {
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that.mediaStream = stream
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video.srcObject = stream
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video.play()
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that.ctxReady = true
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console.log('WebRTC摄像头已就绪')
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})
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.catch(function(err) {
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console.error('getUserMedia失败:', err)
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that.ctxReady = true
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})
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} catch (e) {
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console.error('摄像头启动异常:', e)
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this.ctxReady = true
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}
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},
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stopCamera() {
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if (this.mediaStream) {
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var tracks = this.mediaStream.getTracks()
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for (var i = 0; i < tracks.length; i++) {
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tracks[i].stop()
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}
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this.mediaStream = null
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}
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},
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capturePhoto() {
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if (this.capturedList.length >= 9) {
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uni.showToast({ title: '最多拍9张', icon: 'none' })
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return
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}
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if (this.useWebRTC && this.mediaStream && this.ctxReady) {
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this.webRTCCapture()
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} else {
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this.systemCapture()
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}
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},
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// WebRTC 截图
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webRTCCapture() {
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if (typeof document === 'undefined') {
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this.systemCapture()
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return
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}
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var canvas = document.getElementById('ccCanvas')
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var video = document.getElementById('ccVideo')
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if (!canvas || !video) {
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this.systemCapture()
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return
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}
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canvas.width = video.videoWidth || 1280
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canvas.height = video.videoHeight || 720
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var ctx = canvas.getContext('2d')
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ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
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var dataUrl = canvas.toDataURL('image/jpeg', 0.85)
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this.capturedList.push(dataUrl)
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},
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// 系统相机拍照
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systemCapture() {
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var that = this
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uni.chooseImage({
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count: 1,
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sourceType: ['camera'],
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sizeType: ['original'],
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success: function(res) {
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if (res.tempFilePaths && res.tempFilePaths.length > 0) {
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that.capturedList.push(res.tempFilePaths[0])
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}
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}
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})
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},
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deletePhoto(idx) {
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this.capturedList.splice(idx, 1)
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},
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confirmCapture() {
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if (this.capturedList.length === 0) {
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uni.showToast({ title: '请先拍照', icon: 'none' })
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return
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}
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this.stopCamera()
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var pages = getCurrentPages()
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var prevPage = pages[pages.length - 2]
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if (prevPage) {
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prevPage.$vm.capturedPhotoList = this.capturedList
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}
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uni.navigateBack()
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}
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}
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}
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</script>
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<style>
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.cc-page {
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display: flex;
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flex-direction: column;
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height: 100vh;
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background: #000;
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overflow: hidden;
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}
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.cc-camera-wrap {
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flex: 1;
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position: relative;
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overflow: hidden;
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background: #111;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.cc-video {
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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.cc-canvas {
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display: none;
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}
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.cc-camera-hint {
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text-align: center;
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padding: 40rpx;
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}
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.cc-hint-text {
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color: #999;
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font-size: 28rpx;
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}
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.cc-thumb-bar {
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background: #1a1a1a;
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padding: 16rpx 20rpx;
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}
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.cc-thumb-count {
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color: #999;
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font-size: 22rpx;
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margin-bottom: 12rpx;
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}
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.cc-thumb-list {
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display: flex;
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flex-wrap: wrap;
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gap: 10rpx;
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}
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.cc-thumb-item {
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width: 100rpx;
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height: 100rpx;
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border-radius: 10rpx;
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overflow: hidden;
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position: relative;
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background: #333;
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}
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.cc-thumb-img {
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width: 100%;
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height: 100%;
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}
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.cc-thumb-del {
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position: absolute;
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top: -6rpx;
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right: -6rpx;
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width: 32rpx;
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height: 32rpx;
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border-radius: 50%;
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background: rgba(0,0,0,0.6);
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.cc-del-icon {
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color: #fff;
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font-size: 18rpx;
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}
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.cc-thumb-placeholder {
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border: 2rpx dashed #444;
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box-sizing: border-box;
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}
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.cc-footer {
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display: flex;
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justify-content: center;
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align-items: center;
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padding: 30rpx 40rpx;
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padding-bottom: calc(30rpx + constant(safe-area-inset-bottom));
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padding-bottom: calc(30rpx + env(safe-area-inset-bottom));
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background: #1a1a1a;
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gap: 60rpx;
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}
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.cc-capture-btn {
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width: 80rpx;
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height: 80rpx;
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border-radius: 50%;
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border: 6rpx solid #fff;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.cc-capture-inner {
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width: 64rpx;
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height: 64rpx;
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border-radius: 50%;
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background: #fff;
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}
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.cc-capture-btn:active .cc-capture-inner {
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background: #ccc;
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}
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.cc-capture-btn.disabled {
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opacity: 0.4;
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}
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.cc-confirm-btn {
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padding: 18rpx 40rpx;
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border-radius: 40rpx;
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background: #409eff;
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}
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.cc-confirm-btn.disabled {
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background: #555;
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}
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.cc-confirm-text {
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color: #fff;
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font-size: 28rpx;
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font-weight: bold;
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}
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</style>
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