273 lines
8.2 KiB
Dart
273 lines
8.2 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import 'package:mobile_scanner/mobile_scanner.dart';
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import 'package:qhd_prevention/customWidget/toast_util.dart';
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import 'package:qhd_prevention/pages/home/study/face_ecognition_page.dart';
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import 'package:qhd_prevention/pages/home/work/risk_list_page.dart';
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import 'package:qhd_prevention/pages/my_appbar.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:qhd_prevention/tools/tools.dart';
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class ScanPage extends StatefulWidget {
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// const ScanPage({Key? key}) : super(key: key,);
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const ScanPage({super.key, required this.totalList});
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final List totalList;
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@override
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State<ScanPage> createState() => _ScanPageState();
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}
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class _ScanPageState extends State<ScanPage> {
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final MobileScannerController _controller = MobileScannerController();
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bool _torchOn = false;
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@override
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void initState() {
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super.initState();
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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Future<void> _scanFromGallery() async {
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final picker = ImagePicker();
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final XFile? image = await picker.pickImage(source: ImageSource.gallery);
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if (image == null) return;
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try {
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// ★ 新版：返回 BarcodeCapture?
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final capture = await _controller.analyzeImage(image.path);
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if (capture != null && capture.barcodes.isNotEmpty) {
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final code = capture.barcodes.first.rawValue ?? '';
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_showResult(code);
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} else {
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_showResult('未识别到二维码/条码');
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}
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} catch (e) {
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_showResult('扫描失败：$e');
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}
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}
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void _showResult(String result) {
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try {
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if (result.contains('STUDENT_ID')) {
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final Map<String, dynamic> stuInfo = jsonDecode(result);
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print('stuInfo: $stuInfo');
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// 兼容性提取：res.result.split("@")[1]
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String? stuId;
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final parts = result.split('@');
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if (parts.length > 1) stuId = parts[1];
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// userId = res.result.substring(0, res.result.indexOf('%_face'))
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String? userId;
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final idx = result.indexOf('%_face');
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if (idx >= 0) {
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userId = result.substring(0, idx);
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}
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print('stuId: $stuId, userId: $userId');
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// 比较登录用户 id 与解析到的 stuInfo.USER_ID
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if (SessionService.instance.loginUserId == stuInfo['USER_ID']) {
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goToFace(stuInfo);
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} else {
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ToastUtil.showNormal(context, '当前登录账号不匹配，无法扫码学习，请切换至正确的账号后再尝试人脸识别！');
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return;
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}
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} else {
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// 不是 STUDENT_ID 的情况：按列表 id 匹配
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bool found = false;
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final listId = result;
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for (final item in widget.totalList) {
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if (item['LISTMANAGER_ID'] == listId) {
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found = true;
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goToList(listId: item['LISTMANAGER_ID'], listName: item['NAME']);
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break;
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}
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}
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if (!found) {
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ToastUtil.showError(context, '无法检查该清单');
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}
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}
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} catch (e, st) {
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// 捕获解析或运行时错误
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print('handleScanResult error: $e\n$st');
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('扫码处理失败: ${e.toString()}')),
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);
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}
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}
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// 人脸识别跳转
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void goToFace(Map<String, dynamic> stuInfo) async {
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print('navigate to face with $stuInfo');
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final passed = await pushPage<bool>(
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FaceRecognitionPage(studentId: stuInfo['STUDENT_ID'], mode: FaceMode.auto),
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context,
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);
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if (passed == true) {
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ToastUtil.showSuccess(context, '验证成功');
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} else {
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ToastUtil.showError(context, '验证失败');
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}
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}
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// 跳转到清单页面
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void goToList({required String listId, required String listName}) {
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print('navigate to list: $listId, name: $listName');
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Navigator.pop(context,Animation);
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pushPage(RiskListPage(1, listId), context);
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}
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@override
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Widget build(BuildContext context) {
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// 中心扫描框大小
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const double scanSize = 250;
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final Size screen = MediaQuery.of(context).size;
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final double left = (screen.width - scanSize) / 2;
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final double top = (screen.height - scanSize) / 3 - kToolbarHeight;
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// 因为 SafeArea + AppBar 占了高度，所以减去 toolbar 高度
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const double cornerSize = 20.0; // 角标正方形区域大小
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const double strokeWidth = 4.0; // 边线宽度
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return Scaffold(
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appBar: MyAppbar(
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title: "二维码/条码扫描",
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actions: [
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TextButton(
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onPressed: _scanFromGallery,
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child: const Text(
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"相册",
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style: TextStyle(color: Colors.white, fontSize: 16),
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),
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),
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],
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),
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body: Stack(
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children: [
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// 1. 摄像头预览
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MobileScanner(
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controller: _controller,
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onDetect: (capture) {
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for (final barcode in capture.barcodes) {
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final code = barcode.rawValue;
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if (code != null && mounted) {
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_controller.stop();
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_showResult(code);
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break;
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}
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}
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},
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),
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// 2. 半透明遮罩
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// 顶部
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// 1. 顶部遮罩
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Positioned(
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left: 0, right: 0, top: 0,
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height: top, // 从顶到底部到扫描框上边缘
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child: Container(color: Colors.black54),
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),
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// 2. 底部遮罩
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Positioned(
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left: 0, right: 0,
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top: top + scanSize, // 从扫描框下边缘开始
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bottom: 0,
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child: Container(color: Colors.black54),
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),
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// 3. 左侧遮罩
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Positioned(
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left: 0,
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top: top,
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width: left, // 从屏幕左侧到扫描框左边缘
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height: scanSize, // 和扫描框一样高
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child: Container(color: Colors.black54),
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),
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// 4. 右侧遮罩
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Positioned(
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left: left + scanSize,
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top: top,
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right: 0,
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height: scanSize, // 和扫描框一样高
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child: Container(color: Colors.black54),
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),
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// 3. 扫描框四个角
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// 左上
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Positioned(
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left: left,
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top: top,
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child: _corner(size: cornerSize, stroke: strokeWidth),
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),
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// 右上
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Positioned(
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left: left + scanSize - cornerSize,
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top: top,
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child: _corner(size: cornerSize, stroke: strokeWidth, rotation: 1),
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),
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// 左下
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Positioned(
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left: left,
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top: top + scanSize - cornerSize,
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child: _corner(size: cornerSize, stroke: strokeWidth, rotation: 3),
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),
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// 右下
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Positioned(
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left: left + scanSize - cornerSize,
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top: top + scanSize - cornerSize,
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child: _corner(size: cornerSize, stroke: strokeWidth, rotation: 2),
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),
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// 闪光灯按钮
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Positioned(
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left: (screen.width - 40) / 2,
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top: top + scanSize - 60,
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child: IconButton(
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iconSize: 32,
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color: Colors.white,
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icon: Icon(_torchOn ? Icons.flashlight_off_outlined : Icons.flashlight_on_outlined),
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onPressed: () {
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_controller.toggleTorch();
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setState(() {
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_torchOn = !_torchOn;
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});
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},
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),
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),
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],
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),
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);
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}
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/// 角装饰：一个 L 形的蓝色粗边
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Widget _corner({
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double size = 20,
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double stroke = 4,
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int rotation = 0, // 0=左上, 1=右上, 2=右下, 3=左下
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}) {
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return Transform.rotate(
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angle: rotation * math.pi / 2,
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child: Container(
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width: size,
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height: size,
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decoration: BoxDecoration(
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border: Border(
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top: BorderSide(color: Colors.blue, width: stroke),
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left: BorderSide(color: Colors.blue, width: stroke),
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),
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),
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),
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);
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}
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}
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