pdf_signature/lib/ui/features/pdf/widgets/pdf_pages_overview.dart

96 lines
3.1 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pdfrx/pdfrx.dart';
import '../../../../data/services/export_providers.dart';
import '../view_model/view_model.dart';
class PdfPagesOverview extends ConsumerWidget {
const PdfPagesOverview({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final pdf = ref.watch(pdfProvider);
final useMock = ref.watch(useMockViewerProvider);
final theme = Theme.of(context);
if (!pdf.loaded) return const SizedBox.shrink();
Widget buildList(int pageCount, {Widget Function(int i)? item}) {
return ListView.separated(
padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 8),
itemCount: pageCount,
separatorBuilder: (_, _) => const SizedBox(height: 8),
itemBuilder: (context, index) {
final pageNumber = index + 1;
final isSelected = pdf.currentPage == pageNumber;
return InkWell(
onTap: () => ref.read(pdfProvider.notifier).jumpTo(pageNumber),
child: DecoratedBox(
decoration: BoxDecoration(
color:
isSelected
? theme.colorScheme.primaryContainer
: theme.cardColor,
borderRadius: BorderRadius.circular(8),
border: Border.all(
color:
isSelected
? theme.colorScheme.primary
: theme.dividerColor,
),
),
child: Padding(
padding: const EdgeInsets.all(6),
child: AspectRatio(
aspectRatio: 1 / 1.4142, // A4 portrait approx
child: ClipRRect(
borderRadius: BorderRadius.circular(4),
child:
item != null
? item(index)
: Center(child: Text('$pageNumber')),
),
),
),
),
);
},
);
}
if (useMock) {
final count = pdf.pageCount == 0 ? 1 : pdf.pageCount;
return buildList(count);
}
if (pdf.pickedPdfPath != null) {
return PdfDocumentViewBuilder.file(
pdf.pickedPdfPath!,
builder: (context, document) {
if (document == null) {
return const Center(child: CircularProgressIndicator());
}
final pages = document.pages;
if (pdf.pageCount != pages.length) {
WidgetsBinding.instance.addPostFrameCallback((_) {
ref.read(pdfProvider.notifier).setPageCount(pages.length);
});
}
return buildList(
pages.length,
item:
(i) => PdfPageView(
document: document,
pageNumber: i + 1,
alignment: Alignment.center,
),
);
},
);
}
return const SizedBox.shrink();
}
}