outsource filename and doc name in struct

lib/app.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
+import 'canvas/document_types.dart';
 import 'canvas/drawing_page.dart';
 import 'context/file_change_notifier.dart';
 import 'pages/all_notes_page.dart';
@@ -58,8 +59,7 @@ class _AppState extends State<App> {
                 ctx,
                 MaterialPageRoute(
                   builder: (ctx) => DrawingPage(
-                    filePath: filename,
-                    name: name,
+                    meta: NoteMetaData(filename, name),
                   ),
                 ),
               ).then((v) => notifier.loadAllNotes());

lib/canvas/document_types.dart

@@ -45,3 +45,10 @@ class Point {
 
   Point(this.point, this.thickness);
 }
+
+class NoteMetaData {
+  final String name;
+  final String filePath;
+
+  NoteMetaData(this.name, this.filePath);
+}

lib/canvas/drawing_page.dart

@@ -6,6 +6,7 @@ import 'package:flutter/material.dart';
 import '../savesystem/note_file.dart';
 import '../widgets/drawing_page_top_actions.dart';
 import '../widgets/tool_bar.dart';
+import 'document_types.dart';
 import 'my_painter.dart';
 import 'paint_controller.dart';
 import 'screen_document_mapping.dart';
@@ -13,11 +14,9 @@ import 'screen_document_mapping.dart';
 /// Handles input events and draws canvas element
 class DrawingPage extends StatefulWidget {
   // path to the .dbnote file
-  final String filePath;
-  final String name;
+  final NoteMetaData meta;
 
-  const DrawingPage({Key? key, required this.filePath, required this.name})
-      : super(key: key);
+  const DrawingPage({Key? key, required this.meta}) : super(key: key);
 
   @override
   State<DrawingPage> createState() => _DrawingPageState();
@@ -29,7 +28,7 @@ class _DrawingPageState extends State<DrawingPage> {
   Offset offset = const Offset(.0, .0);
 
   late PaintController controller;
-  late NoteFile noteFile = NoteFile(widget.filePath);
+  late NoteFile noteFile = NoteFile(widget.meta.filePath);
 
   @override
   void initState() {
@@ -57,9 +56,10 @@ class _DrawingPageState extends State<DrawingPage> {
     return Scaffold(
       appBar: AppBar(
           backgroundColor: Colors.blueGrey,
-          title: Text(widget.name),
+          title: Text(widget.meta.name),
           actions: [
-            DrawingPageTopActions(controller: controller, noteName: widget.name)
+            DrawingPageTopActions(
+                controller: controller, noteMetaData: widget.meta)
           ]),
       body: Row(
         children: [

lib/widgets/drawing_page_top_actions.dart

@@ -4,16 +4,17 @@ import 'package:fluentui_system_icons/fluentui_system_icons.dart';
 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
 
+import '../canvas/document_types.dart';
 import '../canvas/paint_controller.dart';
 import '../export/export_pdf.dart';
 import 'icon_material_button.dart';
 
 class DrawingPageTopActions extends StatefulWidget {
   const DrawingPageTopActions(
-      {Key? key, required this.controller, required this.noteName})
+      {Key? key, required this.controller, required this.noteMetaData})
       : super(key: key);
   final PaintController controller;
-  final String noteName;
+  final NoteMetaData noteMetaData;
 
   @override
   State<DrawingPageTopActions> createState() => _DrawingPageTopActionsState();
@@ -81,8 +82,8 @@ class _DrawingPageTopActionsState extends State<DrawingPageTopActions> {
                   ),
                   onTap: () async {
                     // todo move in correct submenu
-                    await exportPDF(
-                        widget.controller.strokes, '${widget.noteName}.pdf');
+                    await exportPDF(widget.controller.strokes,
+                        '${widget.noteMetaData.name}.pdf');
 
                     Widget toast = Container(
                       padding: const EdgeInsets.symmetric(

lib/widgets/note_tile.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
+import '../canvas/document_types.dart';
 import '../canvas/drawing_page.dart';
 import '../context/file_change_notifier.dart';
 
@@ -25,7 +26,7 @@ class NoteTile extends StatelessWidget {
           context,
           MaterialPageRoute(
             builder: (context) =>
-                DrawingPage(filePath: data.relativePath, name: data.name),
+                DrawingPage(meta: NoteMetaData(data.relativePath, data.name)),
           ),
         ).then((value) =>
             Provider.of<FileChangeNotifier>(context, listen: false)