feat: Add print feature, refine gradient on details page

lib/features/document_details/cubit/document_details_cubit.dart

@@ -11,6 +11,7 @@ import 'package:paperless_mobile/core/repository/label_repository.dart';
 import 'package:paperless_mobile/core/service/file_description.dart';
 import 'package:paperless_mobile/core/service/file_service.dart';
 import 'package:paperless_mobile/features/notifications/services/local_notification_service.dart';
+import 'package:printing/printing.dart';
 import 'package:share_plus/share_plus.dart';
 import 'package:cross_file/cross_file.dart';
 
@@ -98,6 +99,7 @@ class DocumentDetailsCubit extends Cubit<DocumentDetailsState> {
 
   Future<ResultType> openDocumentInSystemViewer() async {
     final cacheDir = await FileService.temporaryDirectory;
+    //TODO: Why is this cleared here?
     await FileService.clearDirectoryContent(PaperlessDirectoryType.temporary);
     if (state.metaData == null) {
       await loadMetaData();
@@ -199,6 +201,26 @@ class DocumentDetailsCubit extends Cubit<DocumentDetailsState> {
     );
   }
 
+  Future<void> printDocument() async {
+    if (state.metaData == null) {
+      await loadMetaData();
+    }
+    final filePath = _buildDownloadFilePath(false, await FileService.temporaryDirectory);
+    await _api.downloadToFile(
+      state.document,
+      filePath,
+      original: false,
+    );
+    final file = File(filePath);
+    if (!file.existsSync()) {
+      throw Exception("An error occurred while downloading the document.");
+    }
+    Printing.layoutPdf(
+      name: state.document.title,
+      onLayout: (format) => file.readAsBytesSync(),
+    );
+  }
+
   String _buildDownloadFilePath(bool original, Directory dir) {
     final description = FileDescription.fromPath(
       state.metaData!.mediaFilename.replaceAll("/", " "), // Flatten directory structure

lib/features/document_details/view/pages/document_details_page.dart

@@ -1,5 +1,7 @@
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:open_filex/open_filex.dart';
 import 'package:paperless_api/paperless_api.dart';
 import 'package:paperless_mobile/core/bloc/connectivity_cubit.dart';
@@ -44,11 +46,6 @@ class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
 
   final _pagingScrollController = ScrollController();
 
-  @override
-  void didChangeDependencies() {
-    super.didChangeDependencies();
-  }
-
   @override
   Widget build(BuildContext context) {
     final apiVersion = context.watch<ApiVersion>();
@@ -87,22 +84,24 @@ class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
                         alignment: Alignment.topCenter,
                         children: [
                           BlocBuilder<DocumentDetailsCubit, DocumentDetailsState>(
-                            builder: (context, state) => Positioned.fill(
+                            builder: (context, state) {
-                              child: DocumentPreview(
+                              return Positioned.fill(
-                                document: state.document,
+                                child: DocumentPreview(
-                                fit: BoxFit.cover,
+                                  document: state.document,
-                              ),
+                                  fit: BoxFit.cover,
-                            ),
+                                ),
+                              );
+                            },
                           ),
                           Positioned.fill(
                             top: 0,
-                            child: Container(
+                            child: DecoratedBox(
-                              height: 100,
                               decoration: BoxDecoration(
                                 gradient: LinearGradient(
                                   colors: [
-                                    Colors.black.withOpacity(0.7),
+                                    Theme.of(context).colorScheme.background.withOpacity(0.8),
-                                    Colors.black.withOpacity(0.2),
+                                    Theme.of(context).colorScheme.background.withOpacity(0.5),
+                                    Colors.transparent,
                                     Colors.transparent,
                                     Colors.transparent,
                                   ],
@@ -310,7 +309,7 @@ class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
                   IconButton(
                     tooltip: S.of(context)!.previewTooltip,
                     icon: const Icon(Icons.visibility),
-                    onPressed: (isConnected && false) ? () => _onOpen(state.document) : null,
+                    onPressed: (isConnected) ? () => _onOpen(state.document) : null,
                   ).paddedOnly(right: 4.0),
                   IconButton(
                     tooltip: S.of(context)!.openInSystemViewer,
@@ -318,6 +317,11 @@ class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
                     onPressed: isConnected ? _onOpenFileInSystemViewer : null,
                   ).paddedOnly(right: 4.0),
                   DocumentShareButton(document: state.document),
+                  IconButton(
+                    tooltip: "Print", //TODO: INTL
+                    onPressed: () => context.read<DocumentDetailsCubit>().printDocument(),
+                    icon: const Icon(Icons.print),
+                  ),
                 ],
               );
             },
@@ -404,7 +408,8 @@ class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
     Navigator.of(context).push(
       MaterialPageRoute(
         builder: (_) => DocumentView(
-          documentBytes: context.read<PaperlessDocumentsApi>().getPreview(document.id),
+          documentBytes: context.read<PaperlessDocumentsApi>().download(document),
+          title: document.title,
         ),
       ),
     );

lib/features/document_scan/view/scanner_page.dart

@@ -120,6 +120,7 @@ class _ScannerPageState extends State<ScannerPage> with SingleTickerProviderStat
                       ? () => Navigator.of(context).push(
                             MaterialPageRoute(
                               builder: (context) => DocumentView(
+
                                 documentBytes: _assembleFileBytes(
                                   state,
                                   forcePdf: true,

lib/features/documents/view/pages/document_view.dart

@@ -1,12 +1,14 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_pdfview/flutter_pdfview.dart';
 
 class DocumentView extends StatefulWidget {
   final Future<Uint8List> documentBytes;
-
+  final String? title;
   const DocumentView({
     Key? key,
     required this.documentBytes,
+    this.title,
   }) : super(key: key);
 
   @override
@@ -14,37 +16,90 @@ class DocumentView extends StatefulWidget {
 }
 
 class _DocumentViewState extends State<DocumentView> {
-  // late PdfController _pdfController;
+  int? _currentPage;
-
+  int? _totalPages;
-  @override
+  PDFViewController? _controller;
-  void initState() {
-    super.initState();
-    // _pdfController = PdfController(
-    //   document: PdfDocument.openData(
-    //     widget.documentBytes,
-    //   ),
-    // );
-  }
 
   @override
   Widget build(BuildContext context) {
-    return Container();
+    final isInitialized = _controller != null && _currentPage != null && _totalPages != null;
-    // return Scaffold(
+    final canGoToNextPage = isInitialized && _currentPage! + 1 < _totalPages!;
-    //   appBar: AppBar(
+    final canGoToPreviousPage = isInitialized && _currentPage! > 0;
-    //     title: Text(S.of(context)!.preview),
+    return Scaffold(
-    //   ),
+      appBar: AppBar(
-    //   body: PdfView(
+        title: widget.title != null ? Text(widget.title!) : null,
-    //     builders: PdfViewBuilders<DefaultBuilderOptions>(
+      ),
-    //       options: const DefaultBuilderOptions(
+      bottomNavigationBar: BottomAppBar(
-    //         loaderSwitchDuration: Duration(milliseconds: 500),
+        child: Row(
-    //       ),
+          children: [
-    //       pageLoaderBuilder: (context) => const Center(
+            Flexible(
-    //         child: CircularProgressIndicator(),
+              child: Row(
-    //       ),
+                children: [
-    //     ),
+                  IconButton.filled(
-    //     scrollDirection: Axis.vertical,
+                    onPressed: canGoToPreviousPage
-    //     controller: _pdfController,
+                        ? () {
-    //   ),
+                            _controller?.setPage(_currentPage! - 1);
-    // );
+                          }
+                        : null,
+                    icon: const Icon(Icons.arrow_left),
+                  ),
+                  const SizedBox(width: 16),
+                  IconButton.filled(
+                    onPressed: canGoToNextPage
+                        ? () {
+                            _controller?.setPage(_currentPage! + 1);
+                          }
+                        : null,
+                    icon: const Icon(Icons.arrow_right),
+                  ),
+                ],
+              ),
+            ),
+            if (_currentPage != null && _totalPages != null)
+              Text(
+                "${_currentPage! + 1}/$_totalPages",
+                style: Theme.of(context).textTheme.labelLarge,
+              ),
+          ],
+        ),
+      ),
+      body: FutureBuilder(
+          future: widget.documentBytes,
+          builder: (context, snapshot) {
+            if (!snapshot.hasData) {
+              return const Center(
+                child: CircularProgressIndicator(),
+              );
+            }
+            return PDFView(
+              pdfData: snapshot.data,
+              defaultPage: 0,
+              enableSwipe: true,
+              fitPolicy: FitPolicy.BOTH,
+              swipeHorizontal: true,
+              onRender: (pages) {
+                setState(() {
+                  _currentPage = 0;
+                  _totalPages = pages ?? -1;
+                });
+              },
+              onPageChanged: (page, total) {
+                setState(() {
+                  _currentPage = page;
+                  _totalPages = total;
+                });
+              },
+              onViewCreated: (controller) {
+                _controller = controller;
+              },
+              onError: (error) {
+                print(error.toString());
+              },
+              onPageError: (page, error) {
+                print('$page: ${error.toString()}');
+              },
+            );
+          }),
+    );
   }
 }

lib/main.dart

@@ -74,6 +74,7 @@ Future<void> _initHive() async {
 }
 
 void main() async {
+  Paint.enableDithering = true;
   if (kDebugMode) {
     // URL: http://localhost:3131
     // Login: admin:test

pubspec.lock

@@ -617,6 +617,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.18"
+  flutter_pdfview:
+    dependency: "direct main"
+    description:
+      name: flutter_pdfview
+      sha256: d9735fd8991609910742a25c63a5f87060849e57e60112c677b802ddb64bed72
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.1"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -1267,6 +1275,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.1"
+  printing:
+    dependency: "direct main"
+    description:
+      name: printing
+      sha256: e7c383dca95ee7b88c02dc1c66638628d3dcdc2fb2cc47e7a595facd47e46b56
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.11.0"
   process:
     dependency: transitive
     description:
@@ -1802,4 +1818,4 @@ packages:
     version: "3.1.1"
 sdks:
   dart: ">=3.0.0 <4.0.0"
-  flutter: ">=3.7.0"
+  flutter: ">=3.10.0"

pubspec.yaml

@@ -94,6 +94,8 @@ dependencies:
   flutter_secure_storage: ^8.0.0
   sliver_tools: ^0.2.10
   webview_flutter: ^4.2.1
+  printing: ^5.11.0
+  flutter_pdfview: ^1.3.1
 
 dependency_overrides:
   intl: ^0.18.0