95 lines
3.4 KiB
Dart
95 lines
3.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_box_transform/flutter_box_transform.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../../../../domain/models/model.dart';
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import '../../signature/widgets/rotated_signature_image.dart';
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import '../../signature/view_model/signature_view_model.dart';
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import '../view_model/pdf_view_model.dart';
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/// Minimal overlay widget for rendering a placed signature.
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class SignatureOverlay extends ConsumerWidget {
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const SignatureOverlay({
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super.key,
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required this.pageSize,
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required this.rect,
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required this.placement,
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required this.placedIndex,
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required this.pageNumber,
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});
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final Size pageSize; // not used directly, kept for API symmetry
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final Rect rect; // normalized 0..1 values (left, top, width, height)
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final SignaturePlacement placement;
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final int placedIndex;
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final int pageNumber;
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final processedBytes = ref
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.watch(signatureViewModelProvider)
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.getProcessedBytes(placement.asset, placement.graphicAdjust);
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return LayoutBuilder(
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builder: (context, constraints) {
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final pageW = constraints.maxWidth;
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final pageH = constraints.maxHeight;
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final rectPx = Rect.fromLTWH(
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rect.left * pageW,
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rect.top * pageH,
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rect.width * pageW,
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rect.height * pageH,
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);
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return Stack(
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children: [
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TransformableBox(
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key: Key('placed_signature_$placedIndex'),
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rect: rectPx,
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flip: Flip.none,
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// Keep the box within page bounds
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clampingRect: Rect.fromLTWH(0, 0, pageW, pageH),
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// Disable flips for signatures to avoid mirrored signatures
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allowFlippingWhileResizing: false,
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allowContentFlipping: false,
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onChanged: (result, details) {
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final r = result.rect;
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// Persist as normalized rect (0..1)
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final newRect = Rect.fromLTWH(
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(r.left / pageW).clamp(0.0, 1.0),
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(r.top / pageH).clamp(0.0, 1.0),
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(r.width / pageW).clamp(0.0, 1.0),
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(r.height / pageH).clamp(0.0, 1.0),
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);
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ref
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.read(pdfViewModelProvider.notifier)
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.updatePlacementRect(
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page: pageNumber,
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index: placedIndex,
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rect: newRect,
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);
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},
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// Keep default handles; you can customize later if needed
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contentBuilder:
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(context, boxRect, flip) => DecoratedBox(
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decoration: BoxDecoration(
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border: Border.all(color: Colors.red, width: 2),
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),
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child: SizedBox(
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width: boxRect.width,
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height: boxRect.height,
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child: FittedBox(
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fit: BoxFit.contain,
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child: RotatedSignatureImage(
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bytes: processedBytes,
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rotationDeg: placement.rotationDeg,
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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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);
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}
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}
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