parser logic added

2026-08-30 12:24:29 +02:00
parent 35d5c90d81
commit 3b698a3667
28 changed files with 3018 additions and 346 deletions
@@ -0,0 +1,181 @@
+/// Drag a crop box over the receipt photo before OCR runs.
+library;
+
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:crop_your_image/crop_your_image.dart';
+import 'package:flutter/material.dart';
+
+class CropReceiptScreen extends StatefulWidget {
+  const CropReceiptScreen({super.key, required this.imagePath});
+
+  final String imagePath;
+
+  @override
+  State<CropReceiptScreen> createState() => _CropReceiptScreenState();
+}
+
+class _CropReceiptScreenState extends State<CropReceiptScreen> {
+  final CropController _controller = CropController();
+
+  Uint8List? _image;
+  String? _error;
+  bool _ready = false;
+  bool _cropping = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _load();
+  }
+
+  Future<void> _load() async {
+    try {
+      final bytes = await File(widget.imagePath).readAsBytes();
+      if (!mounted) return;
+      setState(() => _image = bytes);
+    } catch (_) {
+      if (!mounted) return;
+      setState(() => _error = 'Could not open this photo.');
+    }
+  }
+
+  void _onCropped(CropResult result) {
+    switch (result) {
+      case CropSuccess(:final croppedImage):
+        _saveAndPop(croppedImage);
+      case CropFailure():
+        if (!mounted) return;
+        setState(() => _cropping = false);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(content: Text('Could not crop this photo.')),
+        );
+    }
+  }
+
+  Future<void> _saveAndPop(Uint8List bytes) async {
+    try {
+      final file = File(
+        '${Directory.systemTemp.path}/receipity_crop_${DateTime.now().millisecondsSinceEpoch}.jpg',
+      );
+      await file.writeAsBytes(bytes, flush: true);
+      if (!mounted) return;
+      Navigator.of(context).pop(file.path);
+    } catch (_) {
+      if (!mounted) return;
+      setState(() => _cropping = false);
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Could not save the cropped photo.')),
+      );
+    }
+  }
+
+  void _confirm() {
+    if (!_ready || _cropping) return;
+    setState(() => _cropping = true);
+    _controller.crop();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return PopScope(
+      canPop: !_cropping,
+      child: Scaffold(
+        appBar: AppBar(title: const Text('Crop receipt')),
+        body: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Expanded(child: _editor(theme)),
+            SafeArea(
+              top: false,
+              child: Padding(
+                padding: const EdgeInsets.fromLTRB(16, 8, 16, 16),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    Text(
+                      'Drag the corners over the text you want to read. Pinch to zoom.',
+                      style: theme.textTheme.bodyMedium,
+                      textAlign: TextAlign.center,
+                    ),
+                    const SizedBox(height: 12),
+                    FilledButton.icon(
+                      onPressed: _ready && !_cropping ? _confirm : null,
+                      icon: const Icon(Icons.check),
+                      label: Text(_cropping ? 'Cropping…' : 'Use this area'),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _editor(ThemeData theme) {
+    if (_error != null) {
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(24),
+          child: Text(
+            _error!,
+            textAlign: TextAlign.center,
+            style: theme.textTheme.bodyLarge,
+          ),
+        ),
+      );
+    }
+
+    final image = _image;
+    if (image == null) {
+      return const Center(child: CircularProgressIndicator());
+    }
+
+    return Stack(
+      fit: StackFit.expand,
+      children: [
+        Crop(
+          image: image,
+          controller: _controller,
+          onCropped: _onCropped,
+          interactive: true,
+          filterQuality: FilterQuality.medium,
+          baseColor: theme.colorScheme.surface,
+          maskColor: Colors.black.withValues(alpha: 0.55),
+          radius: 8,
+          progressIndicator: const Center(child: CircularProgressIndicator()),
+          initialRectBuilder: InitialRectBuilder.withBuilder((
+            viewportRect,
+            imageRect,
+          ) {
+            final dx = imageRect.width * 0.06;
+            final dy = imageRect.height * 0.06;
+            return Rect.fromLTRB(
+              imageRect.left + dx,
+              imageRect.top + dy,
+              imageRect.right - dx,
+              imageRect.bottom - dy,
+            );
+          }),
+          cornerDotBuilder: (size, _) =>
+              DotControl(color: theme.colorScheme.primary),
+          onStatusChanged: (status) {
+            final ready = status == CropStatus.ready;
+            if (ready == _ready) return;
+            setState(() => _ready = ready);
+          },
+        ),
+        if (_cropping)
+          const ColoredBox(
+            color: Color(0x66000000),
+            child: Center(child: CircularProgressIndicator()),
+          ),
+      ],
+    );
+  }
+}