display filename on top bar

rearrange some imports
add linter rules

analysis_options.yaml

@@ -22,8 +22,17 @@ linter:
   # `// ignore_for_file: name_of_lint` syntax on the line or in the file
   # producing the lint.
   rules:
-    avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    avoid_print: true  # Uncomment to disable the `avoid_print` rule
     prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+    prefer_relative_imports: true
+    avoid_empty_else: true
+    avoid_returning_null_for_future: true
+    avoid_web_libraries_in_flutter: true
+    collection_methods_unrelated_type: true
+    comment_references: true
+    control_flow_in_finally: true
+    empty_statements: true
+    unnecessary_null_checks: true
 
 # Additional information about this file can be found at
 # https://dart.dev/guides/language/analysis-options

lib/app.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
-import 'package:notes/context/file_change_notifier.dart';
 import 'package:provider/provider.dart';
 
 import 'canvas/drawing_page.dart';
+import 'context/file_change_notifier.dart';
 import 'pages/all_notes_page.dart';
 import 'widgets/collapse_drawer.dart';
 
@@ -51,13 +51,17 @@ class _AppState extends State<App> {
         return FloatingActionButton(
           onPressed: () async {
             final now = DateTime.now();
-            String filename =
+            final name =
-                'note-${now.year}_${now.month}_${now.day}-${now.hour}_${now.minute}.dbnote';
+                'note-${now.year}_${now.month}_${now.day}-${now.hour}_${now.minute}';
+            final filename = '$name.dbnote';
 
             Navigator.push(
               context,
               MaterialPageRoute(
-                builder: (ctx) => DrawingPage(filePath: filename),
+                builder: (ctx) => DrawingPage(
+                  filePath: filename,
+                  name: name,
+                ),
               ),
             ).then((value) =>
                 Provider.of<FileChangeNotifier>(context, listen: false)

lib/canvas/document_types.dart

@@ -35,6 +35,7 @@ class Stroke {
   }
 
   Stroke.fromPoints(this.points, this.id, this.color);
+
   Stroke(this.id, this.color);
 }
 

lib/canvas/drawing_page.dart

@@ -1,22 +1,25 @@
 import 'dart:math';
 import 'dart:ui';
+
 import 'package:fluentui_system_icons/fluentui_system_icons.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
-import 'package:notes/savesystem/note_file.dart';
+
+import '../savesystem/note_file.dart';
+import '../widgets/icon_material_button.dart';
+import '../widgets/tool_bar.dart';
 import 'my_painter.dart';
 import 'paint_controller.dart';
 import 'screen_document_mapping.dart';
 
-import '../widgets/icon_material_button.dart';
-import '../widgets/tool_bar.dart';
-
 /// Handles input events and draws canvas element
 class DrawingPage extends StatefulWidget {
   // path to the .dbnote file
   final String filePath;
+  final String name;
 
-  const DrawingPage({Key? key, required this.filePath}) : super(key: key);
+  const DrawingPage({Key? key, required this.filePath, required this.name})
+      : super(key: key);
 
   @override
   State<DrawingPage> createState() => _DrawingPageState();
@@ -53,7 +56,10 @@ class _DrawingPageState extends State<DrawingPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(backgroundColor: Colors.blueGrey, actions: [
+      appBar: AppBar(
+          backgroundColor: Colors.blueGrey,
+          title: Text(widget.name),
+          actions: [
             IconMaterialButton(
               icon: const Icon(FluentIcons.book_open_48_filled),
               color: const Color.fromRGBO(255, 255, 255, .85),
@@ -110,7 +116,7 @@ class _DrawingPageState extends State<DrawingPage> {
         setState(() {
           offset = Offset((-canvasWidth * zoom) + canvasWidth, newOffset.dy);
         });
-        print(offset);
+        debugPrint(offset.toString());
       } else {
         setState(() {
           offset = offset + delta;

lib/canvas/my_painter.dart

@@ -1,8 +1,9 @@
 import 'dart:math';
 
 import 'package:flutter/material.dart';
-import 'package:notes/canvas/paint_controller.dart';
+
-import 'package:notes/canvas/screen_document_mapping.dart';
+import 'paint_controller.dart';
+import 'screen_document_mapping.dart';
 
 final Rect a4Page =
     Rect.fromPoints(const Offset(.0, .0), const Offset(210, 210 * sqrt2));

lib/canvas/paint_controller.dart

@@ -1,5 +1,6 @@
 import 'dart:math';
 import 'dart:ui';
+
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 

lib/pages/all_notes_page.dart

@@ -1,9 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:notes/context/file_change_notifier.dart';
-import 'package:notes/widgets/icon_material_button.dart';
-import 'package:notes/widgets/note_tile.dart';
 import 'package:provider/provider.dart';
 
+import '../context/file_change_notifier.dart';
+import '../widgets/icon_material_button.dart';
+import '../widgets/note_tile.dart';
+
 class AllNotesPage extends StatefulWidget {
   const AllNotesPage({Key? key}) : super(key: key);
 

lib/savesystem/line_loader.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
-import 'note_file.dart';
 import '../canvas/document_types.dart';
+import 'note_file.dart';
 
 extension LineLoading on NoteFile {
   Future<List<Stroke>> loadStrokes() async {

lib/savesystem/note_file.dart

@@ -1,8 +1,9 @@
 import 'dart:io';
 
-import 'package:notes/savesystem/path.dart';
 import 'package:sqflite/sqflite.dart';
 
+import 'path.dart';
+
 class NoteFile {
   late Database _db;
   String filepath;

lib/widgets/collapse_drawer.dart

@@ -1,9 +1,10 @@
 import 'package:fluentui_system_icons/fluentui_system_icons.dart';
 import 'package:flutter/material.dart';
-import 'package:notes/context/file_change_notifier.dart';
-import 'package:notes/widgets/drawer_item.dart';
 import 'package:provider/provider.dart';
 
+import '../context/file_change_notifier.dart';
+import 'drawer_item.dart';
+
 enum View { all, shared, recycle, folders }
 
 class CollapseDrawer extends StatefulWidget {

lib/widgets/note_tile.dart

@@ -24,7 +24,8 @@ class NoteTile extends StatelessWidget {
         Navigator.push(
           context,
           MaterialPageRoute(
-            builder: (context) => DrawingPage(filePath: data.relativePath),
+            builder: (context) =>
+                DrawingPage(filePath: data.relativePath, name: data.name),
           ),
         ).then((value) =>
             Provider.of<FileChangeNotifier>(context, listen: false)