improve parsing 2

2026-09-02 12:35:41 +02:00
parent e98fb0e7f4
commit 98574af903
9 changed files with 1721 additions and 0 deletions
@@ -0,0 +1,91 @@
+/// Overlays a highlight on the receipt photo for a parsed line item.
+library;
+
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+
+import '../models/receipt_bounds.dart';
+
+class ReceiptHighlightOverlay extends StatelessWidget {
+  const ReceiptHighlightOverlay({
+    super.key,
+    required this.imagePath,
+    required this.bounds,
+    this.maxHeight = 280,
+  });
+
+  final String imagePath;
+  final ReceiptBounds bounds;
+  final double maxHeight;
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(12),
+      child: LayoutBuilder(
+        builder: (context, constraints) {
+          return Stack(
+            fit: StackFit.passthrough,
+            children: [
+              Image.file(
+                File(imagePath),
+                fit: BoxFit.contain,
+                height: maxHeight,
+                width: constraints.maxWidth,
+              ),
+              Positioned.fill(
+                child: CustomPaint(
+                  painter: _BoundsPainter(
+                    bounds: bounds,
+                    color: scheme.primary.withValues(alpha: 0.35),
+                    stroke: scheme.primary,
+                  ),
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+    );
+  }
+}
+
+class _BoundsPainter extends CustomPainter {
+  _BoundsPainter({
+    required this.bounds,
+    required this.color,
+    required this.stroke,
+  });
+
+  final ReceiptBounds bounds;
+  final Color color;
+  final Color stroke;
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    if (bounds.isEmpty) return;
+    final rect = Rect.fromLTRB(
+      bounds.left * size.width,
+      bounds.top * size.height,
+      bounds.right * size.width,
+      bounds.bottom * size.height,
+    );
+    canvas.drawRect(rect, Paint()..color = color);
+    canvas.drawRect(
+      rect,
+      Paint()
+        ..color = stroke
+        ..style = PaintingStyle.stroke
+        ..strokeWidth = 2,
+    );
+  }
+
+  @override
+  bool shouldRepaint(covariant _BoundsPainter oldDelegate) {
+    return oldDelegate.bounds != bounds ||
+        oldDelegate.color != color ||
+        oldDelegate.stroke != stroke;
+  }
+}