guoju0808/ry-h5/pages/signin/index.uvue

<template>
	<view class="camera-page">
		<!-- 顶部导航 -->
		<view class="topbar">
			<view class="back-btn" @click="goBack">
				<text class="back-icon">‹</text>
			</view>
			<text class="topbar-title">签到表取景 (A4)</text>
			<view class="placeholder" />
		</view>

		<!-- 视频 + overlay -->
		<view class="viewport">
			<video
				id="signin-video"
				class="video"
				autoplay
				muted
				playsinline
			/>
			<image
				class="frame signin-frame"
				src="/static/overlay/signin.svg"
				mode="widthFix"
			/>

			<view v-if="errorMsg" class="error-layer">
				<text class="error-text">{{ errorMsg }}</text>
				<button class="retry-btn" @click="startCamera">重试</button>
			</view>
		</view>

		<!-- 底部控制条 -->
		<view class="controls">
			<button class="ctrl-btn" @click="flipCamera">
				<text class="ctrl-icon">⟲</text>
				<text class="ctrl-label">翻转</text>
			</button>

			<view class="shutter" @click="takePhoto">
				<view class="shutter-inner" />
			</view>

			<view class="ctrl-btn-placeholder" />
		</view>

		<!-- 拍照预览层 -->
		<view v-if="captured" class="preview">
			<image
				class="preview-img"
				:src="captured"
				mode="aspectFit"
			/>
			<view class="preview-actions">
				<button class="preview-btn preview-btn-cancel" @click="retake">
					<text>重拍</text>
				</button>
				<button class="preview-btn preview-btn-confirm" @click="confirm">
					<text>使用</text>
				</button>
			</view>
		</view>
	</view>
</template>

<script setup lang="uts">
import { useCamera } from '@/composables/useCamera'

const videoId = 'signin-video'
// A4 纸 20%~50% 区间 (签到人手机号/身份证号所在的姓名栏) 做高斯模糊脱敏
const { captured, errorMsg, startCamera, flipCamera, takePhoto, retake, confirm } =
	useCamera(videoId, { start: 0.2, end: 0.5, radius: 20 })

function goBack() {
	uni.navigateBack()
}
</script>

<style>
	.camera-page {
		position: fixed;
		top: 0;
		left: 0;
		right: 0;
		bottom: 0;
		background: transparent;
		display: flex;
		flex-direction: column;
		overflow: hidden;
		z-index: 3;
	}

	/* ========== 顶部导航 ========== */
	.topbar {
		display: flex;
		flex-direction: row;
		justify-content: space-between;
		align-items: center;
		padding: 20rpx 30rpx;
		padding-top: calc(20rpx + env(safe-area-inset-top));
		background: rgba(0, 0, 0, 0.7);
	}

	.back-btn {
		width: 80rpx;
		height: 80rpx;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.back-icon {
		color: #fff;
		font-size: 60rpx;
		font-weight: bold;
	}

	.topbar-title {
		color: #fff;
		font-size: 32rpx;
		font-weight: bold;
	}

	.placeholder {
		width: 80rpx;
	}

	/* ========== 视频取景区 ========== */
	.viewport {
		position: relative;
		flex: 1;
		overflow: hidden;
		background: transparent;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	.video {
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		object-fit: cover;
		z-index: 0;
	}

	.frame {
		position: relative;
		z-index: 1;
		pointer-events: none;
	}

	/* A4 框: 宽度 90% 视口,SVG 内置 1:√2 比例 */
	.signin-frame {
		width: 90%;
		height: auto;
	}

	/* ========== 错误层 ========== */
	.error-layer {
		position: absolute;
		top: 50%;
		left: 50%;
		transform: translate(-50%, -50%);
		display: flex;
		flex-direction: column;
		align-items: center;
		padding: 40rpx;
		background: rgba(0, 0, 0, 0.75);
		border-radius: 16rpx;
		max-width: 80%;
		z-index: 2;
	}

	.error-text {
		color: #fff;
		font-size: 28rpx;
		text-align: center;
		margin-bottom: 24rpx;
		line-height: 1.5;
	}

	.retry-btn {
		padding: 12rpx 48rpx;
		background: #FFD600;
		color: #000;
		border-radius: 32rpx;
		font-size: 26rpx;
		font-weight: bold;
	}

	/* ========== 底部控制 ========== */
	.controls {
		display: flex;
		flex-direction: row;
		justify-content: space-around;
		align-items: center;
		padding: 40rpx 60rpx;
		padding-bottom: calc(40rpx + env(safe-area-inset-bottom));
		background: rgba(0, 0, 0, 0.7);
	}

	.ctrl-btn {
		display: flex;
		flex-direction: column;
		align-items: center;
		background: transparent;
		min-width: 120rpx;
	}

	.ctrl-icon {
		color: #fff;
		font-size: 40rpx;
		line-height: 1;
		margin-bottom: 8rpx;
	}

	.ctrl-label {
		color: #ccc;
		font-size: 22rpx;
	}

	.ctrl-btn-placeholder {
		min-width: 120rpx;
	}

	.shutter {
		width: 144rpx;
		height: 144rpx;
		border-radius: 50%;
		background: rgba(255, 255, 255, 0.25);
		border: 6rpx solid #fff;
		display: flex;
		justify-content: center;
		align-items: center;
		box-shadow: 0 0 0 4rpx rgba(0, 0, 0, 0.3);
	}

	.shutter:active {
		background: rgba(255, 255, 255, 0.4);
		transform: scale(0.95);
	}

	.shutter-inner {
		width: 110rpx;
		height: 110rpx;
		border-radius: 50%;
		background: #fff;
	}

	/* ========== 预览层 ========== */
	.preview {
		position: absolute;
		top: 0;
		left: 0;
		right: 0;
		bottom: 0;
		background: #000;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		z-index: 100;
	}

	.preview-img {
		width: 100%;
		flex: 1;
	}

	.preview-actions {
		display: flex;
		flex-direction: row;
		justify-content: space-around;
		width: 100%;
		padding: 40rpx 60rpx;
		padding-bottom: calc(40rpx + env(safe-area-inset-bottom));
	}

	.preview-btn {
		flex: 1;
		margin: 0 20rpx;
		padding: 24rpx 0;
		border-radius: 48rpx;
		font-size: 30rpx;
		font-weight: bold;
	}

	.preview-btn-cancel {
		background: rgba(255, 255, 255, 0.2);
		color: #fff;
	}

	.preview-btn-confirm {
		background: #FFD600;
		color: #000;
	}
</style>