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refactor: split `pdf_screen.dart` to smaller files

This commit is contained in:
insleker 2025-08-30 00:25:00 +08:00
parent 98798123ae
commit 7c44af8f7c
4 changed files with 621 additions and 538 deletions
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75
lib/ui/features/pdf/widgets/adjustments_panel.dart Normal file
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@ -0,0 +1,75 @@
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pdf_signature/l10n/app_localizations.dart';
import '../../../../data/model/model.dart';
import '../view_model/view_model.dart';
class AdjustmentsPanel extends ConsumerWidget {
const AdjustmentsPanel({super.key, required this.sig});
final SignatureState sig;
@override
Widget build(BuildContext context, WidgetRef ref) {
return Column(
key: const Key('adjustments_panel'),
children: [
Row(
children: [
Checkbox(
key: const Key('chk_aspect_lock'),
value: sig.aspectLocked,
onChanged:
(v) => ref
.read(signatureProvider.notifier)
.toggleAspect(v ?? false),
),
Text(AppLocalizations.of(context).lockAspectRatio),
const SizedBox(width: 16),
Switch(
key: const Key('swt_bg_removal'),
value: sig.bgRemoval,
onChanged:
(v) => ref.read(signatureProvider.notifier).setBgRemoval(v),
),
Text(AppLocalizations.of(context).backgroundRemoval),
],
),
Row(
children: [
Text(AppLocalizations.of(context).contrast),
Expanded(
child: Slider(
key: const Key('sld_contrast'),
min: 0.0,
max: 2.0,
value: sig.contrast,
onChanged:
(v) => ref.read(signatureProvider.notifier).setContrast(v),
),
),
Text(sig.contrast.toStringAsFixed(2)),
],
),
Row(
children: [
Text(AppLocalizations.of(context).brightness),
Expanded(
child: Slider(
key: const Key('sld_brightness'),
min: -1.0,
max: 1.0,
value: sig.brightness,
onChanged:
(v) =>
ref.read(signatureProvider.notifier).setBrightness(v),
),
),
Text(sig.brightness.toStringAsFixed(2)),
],
),
],
);
}
}

373
lib/ui/features/pdf/widgets/pdf_page_area.dart Normal file
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@ -0,0 +1,373 @@
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pdf_signature/l10n/app_localizations.dart';
import 'package:pdfrx/pdfrx.dart';
import '../../../../data/services/providers.dart';
import '../../../../data/model/model.dart';
import '../view_model/view_model.dart';
class PdfPageArea extends ConsumerWidget {
const PdfPageArea({
super.key,
required this.pageSize,
required this.onDragSignature,
required this.onResizeSignature,
required this.onConfirmSignature,
required this.onClearActiveOverlay,
required this.onSelectPlaced,
});
final Size pageSize;
final ValueChanged<Offset> onDragSignature;
final ValueChanged<Offset> onResizeSignature;
final VoidCallback onConfirmSignature;
final VoidCallback onClearActiveOverlay;
final ValueChanged<int?> onSelectPlaced;
Future<void> _showContextMenuForPlaced({
required BuildContext context,
required WidgetRef ref,
required Offset globalPos,
required int index,
}) async {
onSelectPlaced(index);
final choice = await showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
globalPos.dx,
globalPos.dy,
globalPos.dx,
globalPos.dy,
),
items: const [
PopupMenuItem<String>(
key: Key('ctx_delete_signature'),
value: 'delete',
child: Text('Delete'),
),
],
);
if (choice == 'delete') {
final currentPage = ref.read(pdfProvider).currentPage;
ref
.read(pdfProvider.notifier)
.removePlacement(page: currentPage, index: index);
}
}
@override
Widget build(BuildContext context, WidgetRef ref) {
final pdf = ref.watch(pdfProvider);
if (!pdf.loaded) {
return Center(child: Text(AppLocalizations.of(context).noPdfLoaded));
}
final useMock = ref.watch(useMockViewerProvider);
if (useMock) {
return Center(
child: AspectRatio(
aspectRatio: pageSize.width / pageSize.height,
child: Stack(
key: const Key('page_stack'),
children: [
Container(
key: ValueKey('pdf_page_view_${pdf.currentPage}'),
color: Colors.grey.shade200,
child: Center(
child: Text(
AppLocalizations.of(
context,
).pageInfo(pdf.currentPage, pdf.pageCount),
style: const TextStyle(fontSize: 24, color: Colors.black54),
),
),
),
Consumer(
builder: (context, ref, _) {
final sig = ref.watch(signatureProvider);
final visible = ref.watch(signatureVisibilityProvider);
return visible
? _buildPageOverlays(context, ref, sig)
: const SizedBox.shrink();
},
),
],
),
),
);
}
if (pdf.pickedPdfPath != null) {
return PdfDocumentViewBuilder.file(
pdf.pickedPdfPath!,
builder: (context, document) {
if (document == null) {
return const Center(child: CircularProgressIndicator());
}
final pages = document.pages;
final pageNum = pdf.currentPage.clamp(1, pages.length);
final page = pages[pageNum - 1];
final aspect = page.width / page.height;
if (pdf.pageCount != pages.length) {
WidgetsBinding.instance.addPostFrameCallback((_) {
ref.read(pdfProvider.notifier).setPageCount(pages.length);
});
}
return Center(
child: AspectRatio(
aspectRatio: aspect,
child: Stack(
key: const Key('page_stack'),
children: [
PdfPageView(
key: ValueKey('pdf_page_view_$pageNum'),
document: document,
pageNumber: pageNum,
alignment: Alignment.center,
),
Consumer(
builder: (context, ref, _) {
final sig = ref.watch(signatureProvider);
final visible = ref.watch(signatureVisibilityProvider);
return visible
? _buildPageOverlays(context, ref, sig)
: const SizedBox.shrink();
},
),
],
),
),
);
},
);
}
return const SizedBox.shrink();
}
Widget _buildPageOverlays(
BuildContext context,
WidgetRef ref,
SignatureState sig,
) {
final pdf = ref.watch(pdfProvider);
final current = pdf.currentPage;
final placed = pdf.placementsByPage[current] ?? const <Rect>[];
final widgets = <Widget>[];
for (int i = 0; i < placed.length; i++) {
final r = placed[i];
widgets.add(
_buildSignatureOverlay(
context,
ref,
sig,
r,
interactive: false,
placedIndex: i,
),
);
}
if (sig.rect != null &&
sig.editingEnabled &&
(pdf.signedPage == null || pdf.signedPage == current)) {
widgets.add(
_buildSignatureOverlay(context, ref, sig, sig.rect!, interactive: true),
);
}
return Stack(children: widgets);
}
Widget _buildSignatureOverlay(
BuildContext context,
WidgetRef ref,
SignatureState sig,
Rect r, {
bool interactive = true,
int? placedIndex,
}) {
return LayoutBuilder(
builder: (context, constraints) {
final scaleX = constraints.maxWidth / pageSize.width;
final scaleY = constraints.maxHeight / pageSize.height;
final left = r.left * scaleX;
final top = r.top * scaleY;
final width = r.width * scaleX;
final height = r.height * scaleY;
return Stack(
children: [
Positioned(
left: left,
top: top,
width: width,
height: height,
child: Builder(
builder: (context) {
final selectedIdx =
ref.read(pdfProvider).selectedPlacementIndex;
final bool isPlaced = placedIndex != null;
final bool isSelected =
isPlaced && selectedIdx == placedIndex;
final Color borderColor =
isPlaced ? Colors.red : Colors.indigo;
final double borderWidth =
isPlaced ? (isSelected ? 3.0 : 2.0) : 2.0;
Widget content = DecoratedBox(
decoration: BoxDecoration(
color: Color.fromRGBO(
0,
0,
0,
0.05 + math.min(0.25, (sig.contrast - 1.0).abs()),
),
border: Border.all(
color: borderColor,
width: borderWidth,
),
),
child: Stack(
children: [
Consumer(
builder: (context, ref, _) {
final processed = ref.watch(
processedSignatureImageProvider,
);
final bytes = processed ?? sig.imageBytes;
if (bytes == null) {
return Center(
child: Text(
AppLocalizations.of(context).signature,
),
);
}
return Image.memory(bytes, fit: BoxFit.contain);
},
),
if (interactive)
Positioned(
right: 0,
bottom: 0,
child: GestureDetector(
key: const Key('signature_handle'),
behavior: HitTestBehavior.opaque,
onPanUpdate:
(d) => onResizeSignature(
Offset(
d.delta.dx / scaleX,
d.delta.dy / scaleY,
),
),
child: const Icon(Icons.open_in_full, size: 20),
),
),
],
),
);
if (interactive && sig.editingEnabled) {
content = GestureDetector(
key: const Key('signature_overlay'),
behavior: HitTestBehavior.opaque,
onPanStart: (_) {},
onPanUpdate:
(d) => onDragSignature(
Offset(d.delta.dx / scaleX, d.delta.dy / scaleY),
),
onSecondaryTapDown: (d) {
final pos = d.globalPosition;
showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
pos.dx,
pos.dy,
pos.dx,
pos.dy,
),
items: const [
PopupMenuItem<String>(
key: Key('ctx_active_confirm'),
value: 'confirm',
child: Text('Confirm'),
),
PopupMenuItem<String>(
key: Key('ctx_active_delete'),
value: 'delete',
child: Text('Delete'),
),
],
).then((choice) {
if (choice == 'confirm') {
onConfirmSignature();
} else if (choice == 'delete') {
onClearActiveOverlay();
}
});
},
onLongPressStart: (d) {
final pos = d.globalPosition;
showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
pos.dx,
pos.dy,
pos.dx,
pos.dy,
),
items: const [
PopupMenuItem<String>(
key: Key('ctx_active_confirm_lp'),
value: 'confirm',
child: Text('Confirm'),
),
PopupMenuItem<String>(
key: Key('ctx_active_delete_lp'),
value: 'delete',
child: Text('Delete'),
),
],
).then((choice) {
if (choice == 'confirm') {
onConfirmSignature();
} else if (choice == 'delete') {
onClearActiveOverlay();
}
});
},
child: content,
);
} else {
content = GestureDetector(
key: Key('placed_signature_${placedIndex ?? 'x'}'),
behavior: HitTestBehavior.opaque,
onTap: () => onSelectPlaced(placedIndex),
onSecondaryTapDown: (d) {
if (placedIndex != null) {
_showContextMenuForPlaced(
context: context,
ref: ref,
globalPos: d.globalPosition,
index: placedIndex,
);
}
},
onLongPressStart: (d) {
if (placedIndex != null) {
_showContextMenuForPlaced(
context: context,
ref: ref,
globalPos: d.globalPosition,
index: placedIndex,
);
}
},
child: content,
);
}
return content;
},
),
),
],
);
},
);
}
}

568
lib/ui/features/pdf/widgets/pdf_screen.dart
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@ -1,17 +1,17 @@
import 'dart:math' as math;
import 'dart:typed_data';
import 'package:file_selector/file_selector.dart' as fs;
import 'package:flutter/foundation.dart' show kIsWeb;
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pdf_signature/l10n/app_localizations.dart';
import 'package:pdfrx/pdfrx.dart';
import 'package:printing/printing.dart' as printing;
import '../../../../data/model/model.dart';
import '../../../../data/services/providers.dart';
import '../view_model/view_model.dart';
import 'draw_canvas.dart';
import 'pdf_toolbar.dart';
import 'pdf_page_area.dart';
import 'adjustments_panel.dart';
import '../../preferences/widgets/settings_screen.dart';
class PdfSignatureHomePage extends ConsumerStatefulWidget {
@ -24,7 +24,6 @@ class PdfSignatureHomePage extends ConsumerStatefulWidget {
class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
static const Size _pageSize = SignatureController.pageSize;
final GlobalKey _captureKey = GlobalKey();
// Exposed for tests to trigger the invalid-file SnackBar without UI.
@visibleForTesting
@ -107,37 +106,6 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
ref.read(pdfProvider.notifier).selectPlacement(index);
}
Future<void> _showContextMenuForPlaced({
required Offset globalPos,
required int index,
}) async {
// Opening the menu implicitly selects the item
_onSelectPlaced(index);
final choice = await showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
globalPos.dx,
globalPos.dy,
globalPos.dx,
globalPos.dy,
),
items: [
const PopupMenuItem<String>(
key: Key('ctx_delete_signature'),
value: 'delete',
child: Text('Delete'),
),
],
);
if (choice == null) return;
if (choice == 'delete') {
final currentPage = ref.read(pdfProvider).currentPage;
ref
.read(pdfProvider.notifier)
.removePlacement(page: currentPage, index: index);
}
}
Future<void> _openDrawCanvas() async {
final result = await showModalBottomSheet<Uint8List>(
context: context,
@ -303,7 +271,6 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
@override
Widget build(BuildContext context) {
final pdf = ref.watch(pdfProvider);
final isExporting = ref.watch(exportingProvider);
final l = AppLocalizations.of(context);
return Scaffold(
@ -314,12 +281,36 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
children: [
Column(
children: [
_buildToolbar(pdf, disabled: isExporting),
PdfToolbar(
disabled: isExporting,
onOpenSettings: () {
Navigator.of(context).push(
MaterialPageRoute(builder: (_) => const SettingsScreen()),
);
},
onPickPdf: _pickPdf,
onJumpToPage: _jumpToPage,
onSave: _saveSignedPdf,
onLoadSignatureFromFile: _loadSignatureFromFile,
onCreateSignature: _createNewSignature,
onOpenDrawCanvas: _openDrawCanvas,
),
const SizedBox(height: 8),
Expanded(
child: AbsorbPointer(
absorbing: isExporting,
child: _buildPageArea(pdf),
child: PdfPageArea(
pageSize: _pageSize,
onDragSignature: _onDragSignature,
onResizeSignature: _onResizeSignature,
onConfirmSignature: _confirmSignature,
onClearActiveOverlay:
() =>
ref
.read(signatureProvider.notifier)
.clearActiveOverlay(),
onSelectPlaced: _onSelectPlaced,
),
),
),
Consumer(
@ -328,7 +319,7 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
return sig.rect != null
? AbsorbPointer(
absorbing: isExporting,
child: _buildAdjustmentsPanel(sig),
child: AdjustmentsPanel(sig: sig),
)
: const SizedBox.shrink();
},
@ -359,503 +350,4 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
),
);
}
Widget _buildToolbar(PdfState pdf, {bool disabled = false}) {
final dpi = ref.watch(exportDpiProvider);
final l = AppLocalizations.of(context);
final pageInfo = l.pageInfo(pdf.currentPage, pdf.pageCount);
return Wrap(
spacing: 8,
runSpacing: 8,
crossAxisAlignment: WrapCrossAlignment.center,
children: [
OutlinedButton(
key: const Key('btn_open_settings'),
onPressed:
disabled
? null
: () {
Navigator.of(context).push(
MaterialPageRoute(builder: (_) => const SettingsScreen()),
);
},
child: Text(l.settings),
),
OutlinedButton(
key: const Key('btn_open_pdf_picker'),
onPressed: disabled ? null : _pickPdf,
child: Text(l.openPdf),
),
if (pdf.loaded) ...[
Row(
mainAxisSize: MainAxisSize.min,
children: [
IconButton(
key: const Key('btn_prev'),
onPressed:
disabled ? null : () => _jumpToPage(pdf.currentPage - 1),
icon: const Icon(Icons.chevron_left),
tooltip: l.prev,
),
Text(pageInfo, key: const Key('lbl_page_info')),
IconButton(
key: const Key('btn_next'),
onPressed:
disabled ? null : () => _jumpToPage(pdf.currentPage + 1),
icon: const Icon(Icons.chevron_right),
tooltip: l.next,
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(l.goTo),
SizedBox(
width: 60,
child: TextField(
key: const Key('txt_goto'),
keyboardType: TextInputType.number,
enabled: !disabled,
onSubmitted: (v) {
final n = int.tryParse(v);
if (n != null) _jumpToPage(n);
},
),
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(l.dpi),
const SizedBox(width: 8),
DropdownButton<double>(
key: const Key('ddl_export_dpi'),
value: dpi,
items:
const [96.0, 144.0, 200.0, 300.0]
.map(
(v) => DropdownMenuItem(
value: v,
child: Text(v.toStringAsFixed(0)),
),
)
.toList(),
onChanged:
disabled
? null
: (v) {
if (v != null) {
ref.read(exportDpiProvider.notifier).state = v;
}
},
),
],
),
// Removed: Mark for signing button
if (pdf.loaded)
ElevatedButton(
key: const Key('btn_save_pdf'),
onPressed: disabled ? null : _saveSignedPdf,
child: Text(l.saveSignedPdf),
),
// Signature tools are available when a PDF is loaded
OutlinedButton(
key: const Key('btn_load_signature_picker'),
onPressed: disabled || !pdf.loaded ? null : _loadSignatureFromFile,
child: Text(l.loadSignatureFromFile),
),
OutlinedButton(
key: const Key('btn_create_signature'),
onPressed: disabled || !pdf.loaded ? null : _createNewSignature,
child: const Text('Create new signature'),
),
ElevatedButton(
key: const Key('btn_draw_signature'),
onPressed: disabled || !pdf.loaded ? null : _openDrawCanvas,
child: Text(l.drawSignature),
),
// Confirm and Delete are available via context menus
],
],
);
}
Widget _buildPageArea(PdfState pdf) {
if (!pdf.loaded) {
return Center(child: Text(AppLocalizations.of(context).noPdfLoaded));
}
final useMock = ref.watch(useMockViewerProvider);
if (useMock) {
return Center(
child: AspectRatio(
aspectRatio: _pageSize.width / _pageSize.height,
child: RepaintBoundary(
key: _captureKey,
child: Stack(
key: const Key('page_stack'),
children: [
Container(
key: ValueKey('pdf_page_view_${pdf.currentPage}'),
color: Colors.grey.shade200,
child: Center(
child: Text(
AppLocalizations.of(
context,
).pageInfo(pdf.currentPage, pdf.pageCount),
style: const TextStyle(
fontSize: 24,
color: Colors.black54,
),
),
),
),
Consumer(
builder: (context, ref, _) {
final sig = ref.watch(signatureProvider);
final visible = ref.watch(signatureVisibilityProvider);
return visible
? _buildPageOverlays(sig)
: const SizedBox.shrink();
},
),
],
),
),
),
);
}
// If a real PDF path is selected, show actual viewer. Otherwise, keep mock sample.
if (pdf.pickedPdfPath != null) {
return PdfDocumentViewBuilder.file(
pdf.pickedPdfPath!,
builder: (context, document) {
if (document == null) {
return const Center(child: CircularProgressIndicator());
}
final pages = document.pages;
final pageNum = pdf.currentPage.clamp(1, pages.length);
final page = pages[pageNum - 1];
final aspect = page.width / page.height;
// Update page count in state if needed (post-frame to avoid build loop)
if (pdf.pageCount != pages.length) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (mounted) {
ref.read(pdfProvider.notifier).setPageCount(pages.length);
}
});
}
return Center(
child: AspectRatio(
aspectRatio: aspect,
child: RepaintBoundary(
key: _captureKey,
child: Stack(
key: const Key('page_stack'),
children: [
PdfPageView(
key: ValueKey('pdf_page_view_$pageNum'),
document: document,
pageNumber: pageNum,
alignment: Alignment.center,
),
Consumer(
builder: (context, ref, _) {
final sig = ref.watch(signatureProvider);
final visible = ref.watch(signatureVisibilityProvider);
return visible
? _buildPageOverlays(sig)
: const SizedBox.shrink();
},
),
],
),
),
),
);
},
);
}
// Fallback should not occur when not using mock; still return empty view
return const SizedBox.shrink();
}
Widget _buildSignatureOverlay(
SignatureState sig,
Rect r, {
bool interactive = true,
int? placedIndex,
}) {
return LayoutBuilder(
builder: (context, constraints) {
final scaleX = constraints.maxWidth / _pageSize.width;
final scaleY = constraints.maxHeight / _pageSize.height;
final left = r.left * scaleX;
final top = r.top * scaleY;
final width = r.width * scaleX;
final height = r.height * scaleY;
return Stack(
children: [
Positioned(
left: left,
top: top,
width: width,
height: height,
child: Builder(
builder: (context) {
final selectedIdx =
ref.read(pdfProvider).selectedPlacementIndex;
final bool isPlaced = placedIndex != null;
final bool isSelected =
isPlaced && selectedIdx == placedIndex;
final Color borderColor =
isPlaced ? Colors.red : Colors.indigo;
final double borderWidth =
isPlaced ? (isSelected ? 3.0 : 2.0) : 2.0;
Widget content = DecoratedBox(
decoration: BoxDecoration(
color: Color.fromRGBO(
0,
0,
0,
0.05 + math.min(0.25, (sig.contrast - 1.0).abs()),
),
border: Border.all(
color: borderColor,
width: borderWidth,
),
),
child: Stack(
children: [
Consumer(
builder: (context, ref, _) {
final processed = ref.watch(
processedSignatureImageProvider,
);
final bytes = processed ?? sig.imageBytes;
if (bytes == null) {
return Center(
child: Text(
AppLocalizations.of(context).signature,
),
);
}
return Image.memory(bytes, fit: BoxFit.contain);
},
),
if (interactive)
Positioned(
right: 0,
bottom: 0,
child: GestureDetector(
key: const Key('signature_handle'),
behavior: HitTestBehavior.opaque,
onPanUpdate:
(d) => _onResizeSignature(
Offset(
d.delta.dx / scaleX,
d.delta.dy / scaleY,
),
),
child: const Icon(Icons.open_in_full, size: 20),
),
),
// No inline buttons for placed overlays; use context menu instead
],
),
);
if (interactive && sig.editingEnabled) {
content = GestureDetector(
key: const Key('signature_overlay'),
behavior: HitTestBehavior.opaque,
onPanStart: (_) {},
onPanUpdate:
(d) => _onDragSignature(
Offset(d.delta.dx / scaleX, d.delta.dy / scaleY),
),
onSecondaryTapDown: (d) {
// Context menu for active signature: confirm or delete draft (clear)
final pos = d.globalPosition;
showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
pos.dx,
pos.dy,
pos.dx,
pos.dy,
),
items: [
const PopupMenuItem<String>(
key: Key('ctx_active_confirm'),
value: 'confirm',
child: Text('Confirm'),
),
const PopupMenuItem<String>(
key: Key('ctx_active_delete'),
value: 'delete',
child: Text('Delete'),
),
],
).then((choice) {
if (choice == 'confirm') {
_confirmSignature();
} else if (choice == 'delete') {
ref
.read(signatureProvider.notifier)
.clearActiveOverlay();
}
});
},
onLongPressStart: (d) {
final pos = d.globalPosition;
showMenu<String>(
context: context,
position: RelativeRect.fromLTRB(
pos.dx,
pos.dy,
pos.dx,
pos.dy,
),
items: [
const PopupMenuItem<String>(
key: Key('ctx_active_confirm_lp'),
value: 'confirm',
child: Text('Confirm'),
),
const PopupMenuItem<String>(
key: Key('ctx_active_delete_lp'),
value: 'delete',
child: Text('Delete'),
),
],
).then((choice) {
if (choice == 'confirm') {
_confirmSignature();
} else if (choice == 'delete') {
ref
.read(signatureProvider.notifier)
.clearActiveOverlay();
}
});
},
child: content,
);
} else {
// For placed items: tap to select; long-press/right-click for context menu
content = GestureDetector(
key: Key('placed_signature_${placedIndex ?? 'x'}'),
behavior: HitTestBehavior.opaque,
onTap: () => _onSelectPlaced(placedIndex),
onSecondaryTapDown: (d) {
if (placedIndex != null) {
_showContextMenuForPlaced(
globalPos: d.globalPosition,
index: placedIndex,
);
}
},
onLongPressStart: (d) {
if (placedIndex != null) {
_showContextMenuForPlaced(
globalPos: d.globalPosition,
index: placedIndex,
);
}
},
child: content,
);
}
return content;
},
),
),
],
);
},
);
}
Widget _buildPageOverlays(SignatureState sig) {
final pdf = ref.watch(pdfProvider);
final current = pdf.currentPage;
final placed = pdf.placementsByPage[current] ?? const <Rect>[];
final widgets = <Widget>[];
for (int i = 0; i < placed.length; i++) {
final r = placed[i];
widgets.add(
_buildSignatureOverlay(sig, r, interactive: false, placedIndex: i),
);
}
// Show the active editing rect only on the selected (signed) page
if (sig.rect != null &&
sig.editingEnabled &&
(pdf.signedPage == null || pdf.signedPage == current)) {
widgets.add(_buildSignatureOverlay(sig, sig.rect!, interactive: true));
}
return Stack(children: widgets);
}
Widget _buildAdjustmentsPanel(SignatureState sig) {
return Column(
key: const Key('adjustments_panel'),
children: [
Row(
children: [
Checkbox(
key: const Key('chk_aspect_lock'),
value: sig.aspectLocked,
onChanged:
(v) => ref
.read(signatureProvider.notifier)
.toggleAspect(v ?? false),
),
Text(AppLocalizations.of(context).lockAspectRatio),
const SizedBox(width: 16),
Switch(
key: const Key('swt_bg_removal'),
value: sig.bgRemoval,
onChanged:
(v) => ref.read(signatureProvider.notifier).setBgRemoval(v),
),
Text(AppLocalizations.of(context).backgroundRemoval),
],
),
Row(
children: [
Text(AppLocalizations.of(context).contrast),
Expanded(
child: Slider(
key: const Key('sld_contrast'),
min: 0.0,
max: 2.0,
value: sig.contrast,
onChanged:
(v) => ref.read(signatureProvider.notifier).setContrast(v),
),
),
Text(sig.contrast.toStringAsFixed(2)),
],
),
Row(
children: [
Text(AppLocalizations.of(context).brightness),
Expanded(
child: Slider(
key: const Key('sld_brightness'),
min: -1.0,
max: 1.0,
value: sig.brightness,
onChanged:
(v) =>
ref.read(signatureProvider.notifier).setBrightness(v),
),
),
Text(sig.brightness.toStringAsFixed(2)),
],
),
],
);
}
}

143
lib/ui/features/pdf/widgets/pdf_toolbar.dart Normal file
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@ -0,0 +1,143 @@
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pdf_signature/l10n/app_localizations.dart';
import '../../../../data/services/providers.dart';
import '../view_model/view_model.dart';
class PdfToolbar extends ConsumerWidget {
const PdfToolbar({
super.key,
required this.disabled,
required this.onOpenSettings,
required this.onPickPdf,
required this.onJumpToPage,
required this.onSave,
required this.onLoadSignatureFromFile,
required this.onCreateSignature,
required this.onOpenDrawCanvas,
});
final bool disabled;
final VoidCallback onOpenSettings;
final VoidCallback onPickPdf;
final ValueChanged<int> onJumpToPage;
final VoidCallback onSave;
final VoidCallback onLoadSignatureFromFile;
final VoidCallback onCreateSignature;
final VoidCallback onOpenDrawCanvas;
@override
Widget build(BuildContext context, WidgetRef ref) {
final pdf = ref.watch(pdfProvider);
final dpi = ref.watch(exportDpiProvider);
final l = AppLocalizations.of(context);
final pageInfo = l.pageInfo(pdf.currentPage, pdf.pageCount);
return Wrap(
spacing: 8,
runSpacing: 8,
crossAxisAlignment: WrapCrossAlignment.center,
children: [
OutlinedButton(
key: const Key('btn_open_settings'),
onPressed: disabled ? null : onOpenSettings,
child: Text(l.settings),
),
OutlinedButton(
key: const Key('btn_open_pdf_picker'),
onPressed: disabled ? null : onPickPdf,
child: Text(l.openPdf),
),
if (pdf.loaded) ...[
Row(
mainAxisSize: MainAxisSize.min,
children: [
IconButton(
key: const Key('btn_prev'),
onPressed:
disabled ? null : () => onJumpToPage(pdf.currentPage - 1),
icon: const Icon(Icons.chevron_left),
tooltip: l.prev,
),
Text(pageInfo, key: const Key('lbl_page_info')),
IconButton(
key: const Key('btn_next'),
onPressed:
disabled ? null : () => onJumpToPage(pdf.currentPage + 1),
icon: const Icon(Icons.chevron_right),
tooltip: l.next,
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(l.goTo),
SizedBox(
width: 60,
child: TextField(
key: const Key('txt_goto'),
keyboardType: TextInputType.number,
enabled: !disabled,
onSubmitted: (v) {
final n = int.tryParse(v);
if (n != null) onJumpToPage(n);
},
),
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(l.dpi),
const SizedBox(width: 8),
DropdownButton<double>(
key: const Key('ddl_export_dpi'),
value: dpi,
items:
const [96.0, 144.0, 200.0, 300.0]
.map(
(v) => DropdownMenuItem(
value: v,
child: Text(v.toStringAsFixed(0)),
),
)
.toList(),
onChanged:
disabled
? null
: (v) {
if (v != null) {
ref.read(exportDpiProvider.notifier).state = v;
}
},
),
],
),
ElevatedButton(
key: const Key('btn_save_pdf'),
onPressed: disabled ? null : onSave,
child: Text(l.saveSignedPdf),
),
OutlinedButton(
key: const Key('btn_load_signature_picker'),
onPressed: disabled || !pdf.loaded ? null : onLoadSignatureFromFile,
child: Text(l.loadSignatureFromFile),
),
OutlinedButton(
key: const Key('btn_create_signature'),
onPressed: disabled || !pdf.loaded ? null : onCreateSignature,
child: const Text('Create new signature'),
),
ElevatedButton(
key: const Key('btn_draw_signature'),
onPressed: disabled || !pdf.loaded ? null : onOpenDrawCanvas,
child: Text(l.drawSignature),
),
],
],
);
}
}