Selection mode

android/app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
     package="eu.heili.notes">
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.VIBRATE"/>
    <application
            android:requestLegacyExternalStorage="true"
         android:label="notes"

lib/helpers/vibrate.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/foundation.dart';
+import 'package:vibration/vibration.dart';
+
+Future<void> shortVibrate() async {
+  if (defaultTargetPlatform == TargetPlatform.android ||
+      defaultTargetPlatform == TargetPlatform.iOS) {
+    if (await Vibration.hasVibrator() ?? false) {
+      Vibration.vibrate(duration: 50);
+    }
+  }
+}

lib/pages/all_notes_page.dart

@@ -1,9 +1,12 @@
+import 'package:fluentui_system_icons/fluentui_system_icons.dart';
 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
 import 'package:provider/provider.dart';
 
 import '../context/file_change_notifier.dart';
+import '../savesystem/note_file.dart';
 import '../widgets/icon_material_button.dart';
+import '../widgets/icon_text_button.dart';
 import '../widgets/note_tile.dart';
 import '../widgets/wip_toast.dart';
 
@@ -16,6 +19,8 @@ class AllNotesPage extends StatefulWidget {
 
 class _AllNotesPageState extends State<AllNotesPage> {
   FToast fToast = FToast();
+  bool selectionMode = false;
+  List<int> selectionIdx = [];
 
   @override
   void initState() {
@@ -23,6 +28,78 @@ class _AllNotesPageState extends State<AllNotesPage> {
     fToast.init(context);
   }
 
+  Widget _buildTopBar() {
+    if (selectionMode) {
+      return Row(
+        children: [
+          const SizedBox(
+            width: 20,
+            height: 40,
+          ),
+          Text(
+            '${selectionIdx.length} selected',
+            style: const TextStyle(
+                color: Color.fromRGBO(255, 255, 255, .85), fontSize: 21),
+          )
+        ],
+      );
+    } else {
+      return Row(
+        children: [
+          const SizedBox(
+            width: 20,
+          ),
+          const Text(
+            'All notes',
+            style: TextStyle(
+                color: Color.fromRGBO(255, 255, 255, .85), fontSize: 21),
+          ),
+          Expanded(child: Container()),
+          IconMaterialButton(
+            icon: const Icon(Icons.picture_as_pdf_outlined),
+            color: const Color.fromRGBO(255, 255, 255, .85),
+            onPressed: () async {
+              // todo implement pdf import
+              fToast.showToast(
+                child: const WIPToast(),
+                gravity: ToastGravity.BOTTOM,
+                toastDuration: const Duration(seconds: 2),
+              );
+            },
+            iconSize: 22,
+          ),
+          IconMaterialButton(
+            icon: const Icon(Icons.search),
+            color: const Color.fromRGBO(255, 255, 255, .85),
+            onPressed: () {
+              fToast.showToast(
+                child: const WIPToast(),
+                gravity: ToastGravity.BOTTOM,
+                toastDuration: const Duration(seconds: 2),
+              );
+            },
+            iconSize: 22,
+          ),
+          IconMaterialButton(
+            icon: const Icon(Icons.more_vert),
+            color: const Color.fromRGBO(255, 255, 255, .85),
+            onPressed: () {
+              fToast.showToast(
+                child: const WIPToast(),
+                gravity: ToastGravity.BOTTOM,
+                toastDuration: const Duration(seconds: 2),
+              );
+            },
+            iconSize: 22,
+          ),
+          const SizedBox(
+            width: 15,
+          )
+        ],
+      );
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
@@ -30,59 +107,7 @@ class _AllNotesPageState extends State<AllNotesPage> {
         SizedBox(
           height: 25 + MediaQuery.of(context).viewPadding.top,
         ),
-        Row(
+        _buildTopBar(),
-          children: [
-            const SizedBox(
-              width: 20,
-            ),
-            const Text(
-              'All notes',
-              style: TextStyle(
-                  color: Color.fromRGBO(255, 255, 255, .85), fontSize: 21),
-            ),
-            Expanded(child: Container()),
-            IconMaterialButton(
-              icon: const Icon(Icons.picture_as_pdf_outlined),
-              color: const Color.fromRGBO(255, 255, 255, .85),
-              onPressed: () async {
-                // todo implement pdf import
-                fToast.showToast(
-                  child: const WIPToast(),
-                  gravity: ToastGravity.BOTTOM,
-                  toastDuration: const Duration(seconds: 2),
-                );
-              },
-              iconSize: 22,
-            ),
-            IconMaterialButton(
-              icon: const Icon(Icons.search),
-              color: const Color.fromRGBO(255, 255, 255, .85),
-              onPressed: () {
-                fToast.showToast(
-                  child: const WIPToast(),
-                  gravity: ToastGravity.BOTTOM,
-                  toastDuration: const Duration(seconds: 2),
-                );
-              },
-              iconSize: 22,
-            ),
-            IconMaterialButton(
-              icon: const Icon(Icons.more_vert),
-              color: const Color.fromRGBO(255, 255, 255, .85),
-              onPressed: () {
-                fToast.showToast(
-                  child: const WIPToast(),
-                  gravity: ToastGravity.BOTTOM,
-                  toastDuration: const Duration(seconds: 2),
-                );
-              },
-              iconSize: 22,
-            ),
-            const SizedBox(
-              width: 15,
-            )
-          ],
-        ),
         Row(
           children: const [
             SizedBox(
@@ -90,26 +115,142 @@ class _AllNotesPageState extends State<AllNotesPage> {
             )
           ],
         ),
-        _buildNoteTiles()
+        _buildNoteTiles(),
+        if (selectionMode)
+          SizedBox(
+            height: 70,
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+              mainAxisSize: MainAxisSize.max,
+              children: [
+                IconTextButton(
+                  icon: const Icon(Icons.drive_file_move_outline),
+                  color: const Color.fromRGBO(255, 255, 255, .85),
+                  onPressed: () {
+                    fToast.showToast(
+                      child: const WIPToast(),
+                      gravity: ToastGravity.BOTTOM,
+                      toastDuration: const Duration(seconds: 2),
+                    );
+                  },
+                  iconSize: 24,
+                  text: 'Move',
+                ),
+                IconTextButton(
+                  icon: const Icon(Icons.lock_outline),
+                  color: const Color.fromRGBO(255, 255, 255, .85),
+                  onPressed: () {
+                    fToast.showToast(
+                      child: const WIPToast(),
+                      gravity: ToastGravity.BOTTOM,
+                      toastDuration: const Duration(seconds: 2),
+                    );
+                  },
+                  iconSize: 24,
+                  text: 'Lock',
+                ),
+                IconTextButton(
+                  icon: const Icon(Icons.share),
+                  color: const Color.fromRGBO(255, 255, 255, .85),
+                  onPressed: () {
+                    fToast.showToast(
+                      child: const WIPToast(),
+                      gravity: ToastGravity.BOTTOM,
+                      toastDuration: const Duration(seconds: 2),
+                    );
+                  },
+                  iconSize: 24,
+                  text: 'Share',
+                ),
+                IconTextButton(
+                  icon: const Icon(FluentIcons.delete_20_filled),
+                  color: const Color.fromRGBO(255, 255, 255, .85),
+                  onPressed: () async {
+                    // todo add popup to ask if really delete
+
+                    final filechangenotfier =
+                        Provider.of<FileChangeNotifier>(context, listen: false);
+                    for (final s in selectionIdx) {
+                      final dta = filechangenotfier.tiledata[s];
+                      // todo maybe optimize a bit and create not always new notefile instance
+                      await NoteFile(dta.relativePath).delete();
+                    }
+
+                    await filechangenotfier.loadAllNotes();
+
+                    setState(() {
+                      selectionIdx = [];
+                      selectionMode = false;
+                    });
+                  },
+                  iconSize: 24,
+                  text: 'Delete',
+                ),
+                IconTextButton(
+                  icon: const Icon(Icons.more_vert),
+                  color: const Color.fromRGBO(255, 255, 255, .85),
+                  onPressed: () {
+                    fToast.showToast(
+                      child: const WIPToast(),
+                      gravity: ToastGravity.BOTTOM,
+                      toastDuration: const Duration(seconds: 2),
+                    );
+                  },
+                  iconSize: 24,
+                  text: 'More',
+                ),
+              ],
+            ),
+          )
       ],
     );
   }
 
   Widget _buildNoteTiles() {
-    return Expanded(
+    return Consumer<FileChangeNotifier>(
-      child: Consumer<FileChangeNotifier>(
+      builder: (BuildContext context, value, Widget? child) {
-        builder: (BuildContext context, value, Widget? child) {
+        return Expanded(
-          return GridView.builder(
+          child: GridView.builder(
             gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-              crossAxisCount: 5,
+                crossAxisCount: 6, childAspectRatio: 0.7),
-            ),
+            physics: const ScrollPhysics(),
             padding: const EdgeInsets.all(2),
-            itemBuilder: (BuildContext context, int idx) =>
+            itemBuilder: (BuildContext context, int idx) => NoteTile(
-                NoteTile(data: value.tiledata[idx]),
+              data: value.tiledata[idx],
+              selectionMode: selectionMode,
+              selected: selectionIdx.contains(idx),
+              onSelectionChange: (selection) {
+                if (selection) {
+                  if (!selectionMode) {
+                    setState(() {
+                      selectionMode = true;
+                    });
+                  }
+                  if (!selectionIdx.contains(idx)) {
+                    final sel = selectionIdx;
+                    sel.add(idx);
+                    setState(() {
+                      selectionIdx = sel;
+                    });
+                  }
+                } else {
+                  final sel = selectionIdx;
+                  sel.remove(idx);
+                  if (sel.isEmpty) {
+                    setState(() {
+                      selectionMode = false;
+                    });
+                  }
+                  setState(() {
+                    selectionIdx = sel;
+                  });
+                }
+              },
+            ),
             itemCount: value.tiledata.length,
-          );
+          ),
-        },
+        );
-      ),
+      },
     );
   }
 }

lib/savesystem/note_file.dart

@@ -6,21 +6,25 @@ import 'package:sqflite/sqflite.dart';
 import 'path.dart';
 
 class NoteFile {
-  late Database _db;
+  Database? _db;
   String filename;
-  late String _basePath;
+  String? _basePath;
 
   String? _newFileName;
 
   Database db() {
-    return _db;
+    assert(_db != null);
+    return _db!;
   }
 
   NoteFile(this.filename);
 
   Future<void> init() async {
-    _basePath = (await getSavePath()).path;
+    if (_basePath == null) {
-    final path = _basePath + Platform.pathSeparator + filename;
+      await _initBasePath();
+    }
+
+    final path = _basePath! + Platform.pathSeparator + filename;
     _db = await openDatabase(
       path,
       onCreate: (db, version) async {
@@ -44,7 +48,11 @@ class NoteFile {
 
   Future<void> delete() async {
     await close();
-    await File(_basePath + Platform.pathSeparator + filename).delete();
+
+    if (_basePath == null) {
+      await _initBasePath();
+    }
+    await File(_basePath! + Platform.pathSeparator + filename).delete();
   }
 
   void rename(String newname) {
@@ -53,19 +61,27 @@ class NoteFile {
 
   Future<void> close() async {
     // shrink the db file size
-    if (_db.isOpen) {
+    if (_db != null && _db!.isOpen) {
-      await _db.execute('VACUUM');
+      await _db!.execute('VACUUM');
-      await _db.close();
+      await _db!.close();
     } else {
       debugPrint('db file unexpectedly closed before shrinking');
     }
 
+    if (_basePath == null) {
+      await _initBasePath();
+    }
+
     // perform qued file renaming operations
     if (_newFileName != null) {
-      File(_basePath + Platform.pathSeparator + filename)
+      File(_basePath! + Platform.pathSeparator + filename)
-          .rename(_basePath + Platform.pathSeparator + _newFileName!);
+          .rename(_basePath! + Platform.pathSeparator + _newFileName!);
       filename = _newFileName!;
       _newFileName = null;
     }
   }
+
+  Future<void> _initBasePath() async {
+    _basePath = (await getSavePath()).path;
+  }
 }

lib/widgets/icon_text_button.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+
+import 'icon_material_button.dart';
+
+class IconTextButton extends StatelessWidget {
+  const IconTextButton(
+      {Key? key,
+      required this.icon,
+      required this.color,
+      required this.onPressed,
+      required this.text,
+      this.iconSize})
+      : super(key: key);
+  final Widget icon;
+  final Color color;
+  final void Function() onPressed;
+  final String text;
+  final double? iconSize;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        IconMaterialButton(
+            icon: icon, color: color, onPressed: onPressed, iconSize: iconSize),
+        Text(
+          text,
+          style: TextStyle(color: color),
+        )
+      ],
+    );
+  }
+}

lib/widgets/note_tile.dart

@@ -1,35 +1,74 @@
+import 'dart:math';
+
 import 'package:flutter/material.dart';
 
 import '../canvas/document_types.dart';
 import '../canvas/drawing_page.dart';
+import '../helpers/vibrate.dart';
 
 class NoteTile extends StatelessWidget {
-  const NoteTile({Key? key, required this.data}) : super(key: key);
+  const NoteTile(
+      {Key? key,
+      required this.data,
+      required this.selectionMode,
+      required this.selected,
+      required this.onSelectionChange})
+      : super(key: key);
 
   final NoteMetaData data;
+  final bool selectionMode;
+  final bool selected;
+  final void Function(bool) onSelectionChange;
 
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
       onTap: () {
-        Navigator.push(
+        if (selectionMode) {
-          context,
+          onSelectionChange(!selected);
-          MaterialPageRoute(
+        } else {
-            builder: (context) => DrawingPage(meta: data),
+          Navigator.push(
-          ),
+            context,
-        );
+            MaterialPageRoute(
+              builder: (context) => DrawingPage(meta: data),
+            ),
+          );
+        }
       },
-      child: SizedBox(
+      onLongPress: () async {
-        width: 100,
+        shortVibrate();
+        onSelectionChange(!selected);
+      },
+      child: Padding(
+        padding: const EdgeInsets.all(20),
         child: Column(
           children: [
-            SizedBox(
+            Expanded(
-              height: 150,
+              child: Stack(
-              width: 100,
+                children: [
-              child: Container(
+                  ClipRRect(
-                color: Colors.white,
+                    borderRadius: BorderRadius.circular(10),
+                    child: AspectRatio(
+                      aspectRatio: 1 / sqrt2,
+                      child: Container(
+                        color: Colors.white,
+                      ),
+                    ),
+                  ),
+                  if (selectionMode)
+                    Padding(
+                      padding: const EdgeInsets.only(left: 10, top: 10),
+                      child: CustomPaint(
+                        size: const Size(25, 25),
+                        painter: _CirclePainter(selected),
+                      ),
+                    )
+                ],
               ),
             ),
+            const SizedBox(
+              height: 5,
+            ),
             Text(
               data.name,
               style: const TextStyle(color: Colors.white),
@@ -43,3 +82,31 @@ class NoteTile extends StatelessWidget {
     );
   }
 }
+
+class _CirclePainter extends CustomPainter {
+  final bool selected;
+
+  final _paint = Paint()..strokeWidth = .7;
+
+  _CirclePainter(this.selected) {
+    if (selected) {
+      _paint.color = Colors.orange;
+      _paint.style = PaintingStyle.fill;
+    } else {
+      _paint.color = Colors.black;
+      _paint.style = PaintingStyle.stroke;
+    }
+  }
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    canvas.drawOval(
+      Rect.fromLTWH(0, 0, size.width, size.height),
+      _paint,
+    );
+  }
+
+  @override
+  bool shouldRepaint(_CirclePainter oldDelegate) =>
+      oldDelegate.selected != selected;
+}

pubspec.lock

@@ -441,6 +441,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.2"
+  vibration:
+    dependency: "direct main"
+    description:
+      name: vibration
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.7.6"
   win32:
     dependency: transitive
     description:

pubspec.yaml

@@ -39,6 +39,7 @@ dependencies:
   pdf: ^3.8.4
   permission_handler: ^10.2.0
   fluttertoast: ^8.1.1
+  vibration: ^1.7.6
 
 dev_dependencies:
   flutter_test: