chnages has been made for the interactive face camera
This commit is contained in:
Daniah Ayad Al-sultani
824
lib/presentation/screens/face_screen2.dart
Normal file
824
lib/presentation/screens/face_screen2.dart
Normal file
@@ -0,0 +1,824 @@
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import 'dart:async';
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import 'dart:io';
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import 'dart:math' as math;
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import 'dart:typed_data';
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import 'package:flutter/foundation.dart';
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import 'package:camera/camera.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:google_mlkit_face_detection/google_mlkit_face_detection.dart';
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import '../../core/error/exceptions.dart';
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import '../face/face_feedback.dart';
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class OvalCameraCapturePage extends StatefulWidget {
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final bool isLogin;
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final Future<void> Function(File image) onCapture;
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const OvalCameraCapturePage({
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super.key,
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this.isLogin = true,
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required this.onCapture,
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});
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@override
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State<OvalCameraCapturePage> createState() => _OvalCameraCapturePageState();
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}
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class _OvalCameraCapturePageState extends State<OvalCameraCapturePage> {
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CameraController? _cameraController;
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bool _isCameraInitialized = false;
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String? _errorMessage;
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bool _isSuccess = false;
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bool _isSubmitting = false;
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bool _isStreaming = false;
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// Smart feedback
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FaceFeedback _feedback = FaceFeedback(
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type: FaceHintType.noFace,
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message: "ضع وجهك داخل الإطار",
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quality: 0,
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borderColor: Colors.white70,
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);
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double _progress = 0;
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bool _isDetecting = false;
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int _frameCount = 0;
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// Stability tracking
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Rect? _lastFaceRect;
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int _stableFrames = 0;
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bool _showManualCapture = false;
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Timer? _manualCaptureTimer;
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String _debugInfo = "Initializing...";
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late final FaceDetector _faceDetector = FaceDetector(
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options: FaceDetectorOptions(
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performanceMode: FaceDetectorMode.fast,
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enableTracking: true,
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enableClassification: true,
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enableLandmarks: false,
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enableContours: false,
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),
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);
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static const int _throttleEveryNFrames = 5;
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static const int _stableFramesNeeded = 3;
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@override
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void initState() {
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super.initState();
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// Go straight to camera — no network calls here
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_initializeCamera();
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}
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@override
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void dispose() {
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_manualCaptureTimer?.cancel();
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_stopImageStream();
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_cameraController?.dispose();
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_faceDetector.close();
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super.dispose();
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}
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Future<void> _initializeCamera() async {
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try {
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setState(() {
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_errorMessage = null;
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_isCameraInitialized = false;
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_isSuccess = false;
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_isSubmitting = false;
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_progress = 0;
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_stableFrames = 0;
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_lastFaceRect = null;
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});
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await _cameraController?.dispose();
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_cameraController = null;
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final cameras = await availableCameras();
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if (cameras.isEmpty) {
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if (!mounted) return;
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setState(() {
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_errorMessage = "لا توجد كاميرات متاحة على هذا الجهاز";
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_isCameraInitialized = false;
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});
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return;
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}
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final front = cameras.where(
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(c) => c.lensDirection == CameraLensDirection.front,
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);
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final selectedCamera = front.isNotEmpty ? front.first : cameras.first;
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_cameraController = CameraController(
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selectedCamera,
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ResolutionPreset.medium,
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enableAudio: false,
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imageFormatGroup:
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Platform.isAndroid
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? ImageFormatGroup.yuv420
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: ImageFormatGroup.bgra8888,
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);
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await _cameraController!.initialize();
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if (!mounted) return;
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setState(() {
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_isCameraInitialized = true;
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_isStreaming = false;
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_showManualCapture = false;
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_debugInfo = "Ready. Cam: ${selectedCamera.lensDirection}";
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});
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_manualCaptureTimer?.cancel();
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_manualCaptureTimer = Timer(const Duration(seconds: 10), () {
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if (mounted && _isCameraInitialized && !_isSuccess && !_isSubmitting) {
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setState(() {
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_showManualCapture = true;
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});
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}
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});
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_startSmartStream();
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} catch (e) {
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if (!mounted) return;
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setState(() {
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_errorMessage = "خطأ في تهيئة الكاميرا: $e";
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_isCameraInitialized = false;
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});
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}
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}
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void _startSmartStream() {
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if (_cameraController == null || !_cameraController!.value.isInitialized) {
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return;
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}
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if (_isStreaming) return;
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_isStreaming = true;
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try {
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_cameraController!.startImageStream((CameraImage image) async {
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if (!mounted) return;
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if (_isSubmitting || _isSuccess) return;
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_frameCount++;
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if (_frameCount % _throttleEveryNFrames != 0) return;
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if (_isDetecting) return;
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_isDetecting = true;
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try {
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final inputImage = _toInputImage(
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image,
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_cameraController!.description,
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);
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if (inputImage == null) {
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_isDetecting = false;
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return;
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}
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final faces = await _faceDetector.processImage(inputImage);
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if (faces.isEmpty) {
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_stableFrames = 0;
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_applyFeedback(
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FaceFeedback(
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type: FaceHintType.noFace,
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message: "ضع وجهك داخل الإطار",
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quality: 0,
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borderColor: Colors.white70,
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),
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);
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_isDetecting = false;
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return;
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}
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final face = faces.first;
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final brightness = _estimateBrightness(image);
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final rotation =
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inputImage.metadata?.rotation ?? InputImageRotation.rotation0deg;
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final feedback = _evaluate(
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face: face,
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brightness: brightness,
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image: image,
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rotation: rotation,
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);
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_applyFeedback(feedback);
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if (feedback.isGood) {
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_stableFrames++;
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_progress = (_stableFrames / _stableFramesNeeded).clamp(0.0, 1.0);
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if (_stableFrames >= _stableFramesNeeded) {
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if (mounted) {
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setState(() {
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_debugInfo = "جاري التحقق من الصورة...";
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});
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}
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_isDetecting = false;
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await _captureAndSubmit();
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return;
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}
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} else {
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if (_stableFrames > 0) _stableFrames--;
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_progress = (_stableFrames / _stableFramesNeeded).clamp(0.0, 1.0);
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}
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if (mounted && !_isSubmitting && !_isSuccess) {
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setState(() {
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_debugInfo =
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"Faces: ${faces.length} | Bright: ${brightness.toStringAsFixed(1)}\n"
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"Msg: ${feedback.message} | Stable: $_stableFrames";
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});
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}
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} catch (e) {
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debugPrint("Face detection error: $e");
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} finally {
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_isDetecting = false;
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}
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});
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} catch (e) {
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debugPrint("Error starting image stream: $e");
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_isStreaming = false;
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}
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}
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Future<void> _stopImageStream() async {
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if (!_isStreaming || _cameraController == null) return;
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try {
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await _cameraController!.stopImageStream();
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_isStreaming = false;
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} catch (e) {
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debugPrint("Error stopping image stream: $e");
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}
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}
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void _stopCameraCompletely() {
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_manualCaptureTimer?.cancel();
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try {
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if (_isStreaming && _cameraController != null) {
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_cameraController!.stopImageStream();
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_isStreaming = false;
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}
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_cameraController?.dispose();
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_cameraController = null;
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} catch (e) {
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debugPrint("Error stopping camera: $e");
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}
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}
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FaceFeedback _evaluate({
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required Face face,
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required double brightness,
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required CameraImage image,
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required InputImageRotation rotation,
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}) {
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// 1) lighting
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if (brightness < 40) {
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return FaceFeedback(
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type: FaceHintType.tooDark,
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message: "المكان مظلم — انتقل لمكان أكثر إضاءة",
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quality: 0.1,
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borderColor: Colors.orangeAccent,
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);
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}
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// 2) head pose
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final yaw = (face.headEulerAngleY ?? 0).abs();
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final pitch = (face.headEulerAngleX ?? 0).abs();
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if (yaw > 20 || pitch > 20) {
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return FaceFeedback(
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type: FaceHintType.lookStraight,
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message: "انظر مباشرةً للكاميرا",
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quality: 0.2,
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borderColor: Colors.orangeAccent,
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);
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}
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// 3) distance estimate
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double frameWidth = image.width.toDouble();
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double frameHeight = image.height.toDouble();
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if (rotation == InputImageRotation.rotation90deg ||
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rotation == InputImageRotation.rotation270deg) {
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final temp = frameWidth;
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frameWidth = frameHeight;
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frameHeight = temp;
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}
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final box = face.boundingBox;
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final frameArea = frameWidth * frameHeight;
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final faceArea = box.width * box.height;
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final ratio = faceArea / frameArea;
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if (ratio < 0.05) {
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return FaceFeedback(
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type: FaceHintType.tooFar,
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message: "اقترب قليلاً",
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quality: 0.3,
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borderColor: Colors.orangeAccent,
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);
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}
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if (ratio > 0.8) {
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return FaceFeedback(
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type: FaceHintType.tooClose,
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message: "ابتعد قليلاً",
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quality: 0.3,
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borderColor: Colors.orangeAccent,
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);
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}
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// 4) centered
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final faceCenter = Offset(box.center.dx, box.center.dy);
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final frameCenter = Offset(frameWidth / 2, frameHeight / 2);
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final dist = (faceCenter - frameCenter).distance;
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final maxAllowed = math.min(frameWidth, frameHeight) * 0.4;
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if (dist > maxAllowed) {
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return FaceFeedback(
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type: FaceHintType.notCentered,
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message: "وسط وجهك داخل الإطار",
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quality: 0.4,
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borderColor: Colors.orangeAccent,
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);
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}
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// 5) stability
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if (_lastFaceRect != null) {
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final moved = (box.center - _lastFaceRect!.center).distance;
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if (moved > 40) {
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_lastFaceRect = box;
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return FaceFeedback(
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type: FaceHintType.holdStill,
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message: "ثبت الهاتف وابقَ ثابتاً",
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quality: 0.5,
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borderColor: Colors.orangeAccent,
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);
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}
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}
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_lastFaceRect = box;
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return FaceFeedback(
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type: FaceHintType.good,
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message: "ممتاز — ثبت قليلاً",
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quality: 1.0,
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borderColor: Colors.greenAccent,
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);
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}
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void _applyFeedback(FaceFeedback f) {
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if (!mounted) return;
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if (_feedback.type != f.type || _feedback.message != f.message) {
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setState(() {
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_feedback = f;
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});
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}
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}
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Future<void> _captureAndSubmit() async {
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if (_cameraController == null) return;
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if (_isSubmitting || _isSuccess) return;
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setState(() {
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_isSubmitting = true;
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_errorMessage = null;
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});
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try {
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await _stopImageStream();
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// Small delay to let camera settle after stopping stream
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await Future.delayed(const Duration(milliseconds: 200));
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if (_cameraController == null ||
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!_cameraController!.value.isInitialized) {
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_handleScanError("الكاميرا غير جاهزة، حاول مرة أخرى");
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return;
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}
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final xFile = await _cameraController!.takePicture();
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final file = File(xFile.path);
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await widget.onCapture(file);
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if (mounted) {
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setState(() {
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_isSuccess = true;
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_isSubmitting = false;
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});
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Future.delayed(const Duration(seconds: 1), () {
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if (mounted) {
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Navigator.of(context).pop(true);
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}
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});
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}
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} on ServerException catch (e) {
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// Check if this is an "already logged in" error from the API
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final msg = e.message.toLowerCase();
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if (msg.contains('already logged in') ||
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msg.contains('مسجل دخول بالفعل')) {
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// Stop camera and go back with a dialog
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_stopCameraCompletely();
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if (mounted) {
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showDialog(
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context: context,
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barrierDismissible: false,
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builder:
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(_) => AlertDialog(
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title: const Text('تنبيه', textAlign: TextAlign.center),
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content: const Text(
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'أنت مسجل دخول بالفعل، لا يمكنك تسجيل الدخول مرة أخرى.',
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textAlign: TextAlign.center,
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),
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actions: [
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TextButton(
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onPressed: () {
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Navigator.of(context).pop(); // Close dialog
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Navigator.of(context).pop(); // Go back from camera
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},
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child: const Text('حسناً'),
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),
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],
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),
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);
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}
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return;
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}
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_handleScanError(e.message);
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} on NetworkException catch (e) {
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_handleScanError(e.message);
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} on CameraException catch (e) {
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_handleScanError("فشل التقاط الصورة: ${e.description ?? e.code}");
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} catch (e) {
|
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_handleScanError("حدث خطأ غير متوقع: $e");
|
||||
}
|
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}
|
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void _handleScanError(String msg) {
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if (!mounted) return;
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setState(() {
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||||
_isSubmitting = false;
|
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_errorMessage = msg;
|
||||
_progress = 0;
|
||||
_stableFrames = 0;
|
||||
});
|
||||
|
||||
if (_cameraController != null &&
|
||||
_cameraController!.value.isInitialized &&
|
||||
!_isStreaming) {
|
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_startSmartStream();
|
||||
}
|
||||
}
|
||||
|
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double _estimateBrightness(CameraImage image) {
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if (image.planes.isEmpty) return 0;
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final bytes = image.planes[0].bytes;
|
||||
if (bytes.isEmpty) return 0;
|
||||
|
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const step = 100;
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int sum = 0;
|
||||
int count = 0;
|
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for (int i = 0; i < bytes.length; i += step) {
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||||
sum += bytes[i];
|
||||
count++;
|
||||
}
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return count == 0 ? 0 : (sum / count);
|
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}
|
||||
|
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InputImage? _toInputImage(CameraImage image, CameraDescription camera) {
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final sensorOrientation = camera.sensorOrientation;
|
||||
InputImageRotation? rotation;
|
||||
|
||||
if (Platform.isIOS) {
|
||||
rotation = _rotationIntToImageRotation(sensorOrientation);
|
||||
} else if (Platform.isAndroid) {
|
||||
var rotationCompensation =
|
||||
_orientations[_cameraController!.value.deviceOrientation];
|
||||
if (rotationCompensation == null) return null;
|
||||
if (camera.lensDirection == CameraLensDirection.front) {
|
||||
rotationCompensation = (sensorOrientation + rotationCompensation) % 360;
|
||||
} else {
|
||||
rotationCompensation =
|
||||
(sensorOrientation - rotationCompensation + 360) % 360;
|
||||
}
|
||||
rotation = _rotationIntToImageRotation(rotationCompensation);
|
||||
}
|
||||
if (rotation == null) return null;
|
||||
|
||||
if (Platform.isAndroid) {
|
||||
final nv21 = _convertYUV420ToNV21(image);
|
||||
|
||||
return InputImage.fromBytes(
|
||||
bytes: nv21,
|
||||
metadata: InputImageMetadata(
|
||||
size: Size(image.width.toDouble(), image.height.toDouble()),
|
||||
rotation: rotation,
|
||||
format: InputImageFormat.nv21,
|
||||
bytesPerRow: image.width,
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
// iOS BGRA8888
|
||||
if (image.planes.length == 1) {
|
||||
return InputImage.fromBytes(
|
||||
bytes: image.planes.first.bytes,
|
||||
metadata: InputImageMetadata(
|
||||
size: Size(image.width.toDouble(), image.height.toDouble()),
|
||||
rotation: rotation,
|
||||
format: InputImageFormat.bgra8888,
|
||||
bytesPerRow: image.planes.first.bytesPerRow,
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
Uint8List _convertYUV420ToNV21(CameraImage image) {
|
||||
final int width = image.width;
|
||||
final int height = image.height;
|
||||
|
||||
final yPlane = image.planes[0];
|
||||
final uPlane = image.planes[1];
|
||||
final vPlane = image.planes[2];
|
||||
|
||||
final int ySize = width * height;
|
||||
final int uvSize = ySize ~/ 2;
|
||||
|
||||
final Uint8List nv21 = Uint8List(ySize + uvSize);
|
||||
|
||||
// Y Channel
|
||||
if (yPlane.bytesPerRow == width) {
|
||||
nv21.setAll(0, yPlane.bytes);
|
||||
} else {
|
||||
int offset = 0;
|
||||
for (int i = 0; i < height; i++) {
|
||||
nv21.setRange(
|
||||
offset,
|
||||
offset + width,
|
||||
yPlane.bytes,
|
||||
i * yPlane.bytesPerRow,
|
||||
);
|
||||
offset += width;
|
||||
}
|
||||
}
|
||||
|
||||
// UV Channel (NV21 is VU interleaved)
|
||||
final int uvWidth = width ~/ 2;
|
||||
final int uvHeight = height ~/ 2;
|
||||
final int uvPixelStride = uPlane.bytesPerPixel ?? 1;
|
||||
|
||||
int uvIndex = ySize;
|
||||
|
||||
for (int row = 0; row < uvHeight; row++) {
|
||||
final int srcIndex = row * uPlane.bytesPerRow;
|
||||
for (int col = 0; col < uvWidth; col++) {
|
||||
final int pixelIndex = srcIndex + (col * uvPixelStride);
|
||||
nv21[uvIndex++] = vPlane.bytes[pixelIndex];
|
||||
nv21[uvIndex++] = uPlane.bytes[pixelIndex];
|
||||
}
|
||||
}
|
||||
|
||||
return nv21;
|
||||
}
|
||||
|
||||
InputImageRotation _rotationIntToImageRotation(int rotation) {
|
||||
switch (rotation) {
|
||||
case 90:
|
||||
return InputImageRotation.rotation90deg;
|
||||
case 180:
|
||||
return InputImageRotation.rotation180deg;
|
||||
case 270:
|
||||
return InputImageRotation.rotation270deg;
|
||||
default:
|
||||
return InputImageRotation.rotation0deg;
|
||||
}
|
||||
}
|
||||
|
||||
static final _orientations = {
|
||||
DeviceOrientation.portraitUp: 0,
|
||||
DeviceOrientation.landscapeLeft: 90,
|
||||
DeviceOrientation.portraitDown: 180,
|
||||
DeviceOrientation.landscapeRight: 270,
|
||||
};
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
if (_errorMessage != null && !_isCameraInitialized) {
|
||||
return Scaffold(
|
||||
backgroundColor: Colors.black,
|
||||
body: Center(
|
||||
child: Column(
|
||||
mainAxisSize: MainAxisSize.min,
|
||||
children: [
|
||||
const Icon(Icons.error, color: Colors.red, size: 48),
|
||||
const SizedBox(height: 16),
|
||||
Text(_errorMessage!, style: const TextStyle(color: Colors.white)),
|
||||
const SizedBox(height: 16),
|
||||
ElevatedButton(
|
||||
onPressed: _initializeCamera,
|
||||
child: const Text("إعادة المحاولة"),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
if (!_isCameraInitialized || _cameraController == null) {
|
||||
return const Scaffold(
|
||||
backgroundColor: Colors.black,
|
||||
body: Center(child: CircularProgressIndicator(color: Colors.red)),
|
||||
);
|
||||
}
|
||||
|
||||
return Scaffold(
|
||||
backgroundColor: Colors.black,
|
||||
body: Stack(
|
||||
fit: StackFit.expand,
|
||||
children: [
|
||||
Center(child: CameraPreview(_cameraController!)),
|
||||
CustomPaint(
|
||||
painter: _OvalOverlayPainter(
|
||||
borderColor: _feedback.borderColor,
|
||||
progress: _progress,
|
||||
),
|
||||
),
|
||||
Positioned(
|
||||
top: 60,
|
||||
left: 0,
|
||||
right: 0,
|
||||
child: Column(
|
||||
children: [
|
||||
Text(
|
||||
widget.isLogin ? "تسجيل الدخول" : "تسجيل خروج",
|
||||
style: const TextStyle(
|
||||
color: Colors.white,
|
||||
fontSize: 24,
|
||||
fontWeight: FontWeight.bold,
|
||||
fontFamily: 'Cairo',
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 10),
|
||||
Container(
|
||||
padding: const EdgeInsets.symmetric(
|
||||
horizontal: 16,
|
||||
vertical: 8,
|
||||
),
|
||||
decoration: BoxDecoration(
|
||||
color: Colors.black54,
|
||||
borderRadius: BorderRadius.circular(20),
|
||||
),
|
||||
child: Text(
|
||||
_feedback.message,
|
||||
style: TextStyle(
|
||||
color: _feedback.borderColor,
|
||||
fontSize: 16,
|
||||
fontWeight: FontWeight.w600,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
if (_isSubmitting)
|
||||
const Center(child: CircularProgressIndicator(color: Colors.white)),
|
||||
if (_isSuccess)
|
||||
const Center(
|
||||
child: Icon(Icons.check_circle, color: Colors.green, size: 80),
|
||||
),
|
||||
if (_errorMessage != null && _isCameraInitialized)
|
||||
Positioned(
|
||||
bottom: 20,
|
||||
left: 0,
|
||||
right: 0,
|
||||
child: Container(
|
||||
color: Colors.black54,
|
||||
padding: const EdgeInsets.all(8),
|
||||
child: Text(
|
||||
_errorMessage!,
|
||||
style: const TextStyle(color: Colors.red),
|
||||
textAlign: TextAlign.center,
|
||||
),
|
||||
),
|
||||
),
|
||||
Positioned(
|
||||
bottom: 50,
|
||||
left: 10,
|
||||
right: 10,
|
||||
child: Text(
|
||||
_debugInfo,
|
||||
style: const TextStyle(
|
||||
color: Colors.yellow,
|
||||
fontSize: 12,
|
||||
backgroundColor: Colors.black54,
|
||||
),
|
||||
textAlign: TextAlign.center,
|
||||
),
|
||||
),
|
||||
if (_showManualCapture && !_isSubmitting && !_isSuccess)
|
||||
Positioned(
|
||||
bottom: 110,
|
||||
left: 0,
|
||||
right: 0,
|
||||
child: Center(
|
||||
child: ElevatedButton.icon(
|
||||
onPressed: _captureAndSubmit,
|
||||
icon: const Icon(Icons.camera_alt),
|
||||
label: const Text("التقاط يدوياً"),
|
||||
style: ElevatedButton.styleFrom(
|
||||
backgroundColor: Colors.redAccent,
|
||||
foregroundColor: Colors.white,
|
||||
padding: const EdgeInsets.symmetric(
|
||||
horizontal: 24,
|
||||
vertical: 12,
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class _OvalOverlayPainter extends CustomPainter {
|
||||
final Color borderColor;
|
||||
final double progress;
|
||||
|
||||
_OvalOverlayPainter({required this.borderColor, required this.progress});
|
||||
|
||||
@override
|
||||
void paint(Canvas canvas, Size size) {
|
||||
final width = size.width * 0.75;
|
||||
final height = size.height * 0.55;
|
||||
final center = Offset(size.width / 2, size.height / 2);
|
||||
final ovalRect = Rect.fromCenter(
|
||||
center: center,
|
||||
width: width,
|
||||
height: height,
|
||||
);
|
||||
|
||||
final screenPath =
|
||||
Path()..addRect(Rect.fromLTWH(0, 0, size.width, size.height));
|
||||
final ovalPath = Path()..addOval(ovalRect);
|
||||
final overlayPath = Path.combine(
|
||||
PathOperation.difference,
|
||||
screenPath,
|
||||
ovalPath,
|
||||
);
|
||||
|
||||
final bgPaint =
|
||||
Paint()
|
||||
..color = Colors.black.withOpacity(0.6)
|
||||
..style = PaintingStyle.fill;
|
||||
|
||||
canvas.drawPath(overlayPath, bgPaint);
|
||||
|
||||
final borderPaint =
|
||||
Paint()
|
||||
..color = borderColor
|
||||
..style = PaintingStyle.stroke
|
||||
..strokeWidth = 4.0;
|
||||
|
||||
canvas.drawOval(ovalRect, borderPaint);
|
||||
|
||||
if (progress > 0) {
|
||||
final progressPaint =
|
||||
Paint()
|
||||
..color = Colors.greenAccent
|
||||
..style = PaintingStyle.stroke
|
||||
..strokeWidth = 6.0
|
||||
..strokeCap = StrokeCap.round;
|
||||
|
||||
final startAngle = -math.pi / 2;
|
||||
final sweepAngle = 2 * math.pi * progress;
|
||||
|
||||
canvas.drawArc(
|
||||
ovalRect.inflate(10),
|
||||
startAngle,
|
||||
sweepAngle,
|
||||
false,
|
||||
progressPaint,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
@override
|
||||
bool shouldRepaint(covariant _OvalOverlayPainter oldDelegate) {
|
||||
return oldDelegate.borderColor != borderColor ||
|
||||
oldDelegate.progress != progress;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user