added about page with OSS licenses

lib/utils/constants.dart

@@ -27,4 +27,189 @@ class Constants {
 
   static const svgBackground = Colors.white;
   static const svgColorFilter = ColorFilter.mode(svgBackground, BlendMode.dstOver);
+
+  static const List<Dependency> packages = [
+    Dependency(
+      name: 'Flutter',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/flutter/flutter/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/flutter/flutter',
+    ),
+    Dependency(
+      name: 'Charts',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/google/charts/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/google/charts',
+    ),
+    Dependency(
+      name: 'Collection',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/dart-lang/collection/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/dart-lang/collection',
+    ),
+    Dependency(
+      name: 'Draggable Scrollbar',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/fluttercommunity/flutter-draggable-scrollbar/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/fluttercommunity/flutter-draggable-scrollbar',
+    ),
+    Dependency(
+      name: 'Event Bus',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/marcojakob/dart-event-bus/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/marcojakob/dart-event-bus',
+    ),
+    Dependency(
+      name: 'Expansion Tile Card',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/Skylled/expansion_tile_card/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/Skylled/expansion_tile_card',
+    ),
+    Dependency(
+      name: 'Flushbar',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/AndreHaueisen/flushbar/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/AndreHaueisen/flushbar',
+    ),
+    Dependency(
+      name: 'Flutter ijkplayer',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/CaiJingLong/flutter_ijkplayer/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/CaiJingLong/flutter_ijkplayer',
+    ),
+    Dependency(
+      name: 'Flutter Native Timezone',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/pinkfish/flutter_native_timezone/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/pinkfish/flutter_native_timezone',
+    ),
+    Dependency(
+      name: 'Flutter SVG',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/dnfield/flutter_svg/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/dnfield/flutter_svg',
+    ),
+    Dependency(
+      name: 'Geocoder',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/aloisdeniel/flutter_geocoder/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/aloisdeniel/flutter_geocoder',
+    ),
+    Dependency(
+      name: 'Google Maps for Flutter',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter/LICENSE',
+      sourceUrl: 'https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter',
+    ),
+    Dependency(
+      name: 'Intl',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/dart-lang/intl/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/dart-lang/intl',
+    ),
+    Dependency(
+      name: 'Outline Material Icons',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/lucaslcode/outline_material_icons/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/lucaslcode/outline_material_icons',
+    ),
+    Dependency(
+      name: 'Palette Generator',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/flutter/packages/blob/master/packages/palette_generator/LICENSE',
+      sourceUrl: 'https://github.com/flutter/packages/tree/master/packages/palette_generator',
+    ),
+    Dependency(
+      name: 'PDF for Dart and Flutter',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/DavBfr/dart_pdf/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/DavBfr/dart_pdf',
+    ),
+    Dependency(
+      name: 'Pedantic',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/dart-lang/pedantic/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/dart-lang/pedantic',
+    ),
+    Dependency(
+      name: 'Percent Indicator',
+      license: 'BSD 2-Clause',
+      licenseUrl: 'https://github.com/diegoveloper/flutter_percent_indicator/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/diegoveloper/flutter_percent_indicator/',
+    ),
+    Dependency(
+      name: 'Permission Handler',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/Baseflow/flutter-permission-handler/blob/develop/permission_handler/LICENSE',
+      sourceUrl: 'https://github.com/Baseflow/flutter-permission-handler',
+    ),
+    Dependency(
+      name: 'Photo View',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/renancaraujo/photo_view/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/renancaraujo/photo_view',
+    ),
+    Dependency(
+      name: 'Printing',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/DavBfr/dart_pdf/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/DavBfr/dart_pdf',
+    ),
+    Dependency(
+      name: 'Provider',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/rrousselGit/provider/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/rrousselGit/provider',
+    ),
+    Dependency(
+      name: 'Screen',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/clovisnicolas/flutter_screen/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/clovisnicolas/flutter_screen',
+    ),
+    Dependency(
+      name: 'Shared Preferences',
+      license: 'BSD 3-Clause',
+      licenseUrl: 'https://github.com/flutter/plugins/blob/master/packages/shared_preferences/shared_preferences/LICENSE',
+      sourceUrl: 'https://github.com/flutter/plugins/tree/master/packages/shared_preferences/shared_preferences',
+    ),
+    Dependency(
+      name: 'sqflite',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/tekartik/sqflite/blob/master/sqflite/LICENSE',
+      sourceUrl: 'https://github.com/tekartik/sqflite',
+    ),
+    Dependency(
+      name: 'Streams Channel',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/loup-v/streams_channel/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/loup-v/streams_channel',
+    ),
+    Dependency(
+      name: 'Tuple',
+      license: 'BSD 2-Clause',
+      licenseUrl: 'https://github.com/dart-lang/tuple/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/dart-lang/tuple',
+    ),
+    Dependency(
+      name: 'UUID',
+      license: 'MIT',
+      licenseUrl: 'https://github.com/Daegalus/dart-uuid/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/Daegalus/dart-uuid',
+    ),
+  ];
+}
+
+class Dependency {
+  final String name;
+  final String license;
+  final String sourceUrl;
+  final String licenseUrl;
+
+  const Dependency({
+    @required this.name,
+    @required this.license,
+    @required this.licenseUrl,
+    @required this.sourceUrl,
+  });
 }

lib/widgets/about/about_page.dart

@@ -0,0 +1,45 @@
+import 'package:aves/widgets/about/licenses.dart';
+import 'package:flutter/material.dart';
+
+class AboutPage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('About'),
+      ),
+      body: SafeArea(
+        child: CustomScrollView(
+          slivers: [
+            SliverPadding(
+              padding: const EdgeInsets.only(top: 16),
+              sliver: SliverList(
+                delegate: SliverChildListDelegate(
+                  [
+                    Center(
+                      child: RichText(
+                        text: TextSpan(
+                          children: [
+                            const TextSpan(text: 'Made with ❤️ and '),
+                            WidgetSpan(
+                              child: FlutterLogo(
+                                size: Theme.of(context).textTheme.bodyText2.fontSize * 1.25,
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                    const SizedBox(height: 8),
+                    const Divider(),
+                  ],
+                ),
+              ),
+            ),
+            Licenses(),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/widgets/about/licenses.dart

@@ -0,0 +1,169 @@
+import 'package:aves/utils/constants.dart';
+import 'package:aves/widgets/common/icons.dart';
+import 'package:aves/widgets/common/menu_row.dart';
+import 'package:collection/collection.dart';
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class Licenses extends StatefulWidget {
+  @override
+  _LicensesState createState() => _LicensesState();
+}
+
+class _LicensesState extends State<Licenses> {
+  LicenseSort _sort = LicenseSort.name;
+  List<Dependency> _packages;
+
+  @override
+  void initState() {
+    super.initState();
+    _packages = List.of(Constants.packages);
+    _sortPackages();
+  }
+
+  void _sortPackages() {
+    _packages.sort((a, b) {
+      switch (_sort) {
+        case LicenseSort.license:
+          final c = compareAsciiUpperCase(a.license, b.license);
+          return c != 0 ? c : compareAsciiUpperCase(a.name, b.name);
+        case LicenseSort.name:
+        default:
+          return compareAsciiUpperCase(a.name, b.name);
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SliverPadding(
+      padding: const EdgeInsets.symmetric(horizontal: 8),
+      sliver: SliverList(
+        delegate: SliverChildBuilderDelegate(
+          (context, index) {
+            if (index-- == 0) {
+              return _buildHeader();
+            }
+            return LicenseRow(_packages[index]);
+          },
+          childCount: _packages.length + 1,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildHeader() {
+    return Column(
+      children: [
+        Padding(
+          padding: const EdgeInsetsDirectional.only(start: 8),
+          child: Row(
+            children: [
+              Text(
+                'Open-source licenses',
+                style: Theme.of(context).textTheme.headline6.copyWith(fontFamily: 'Concourse Caps'),
+              ),
+              const Spacer(),
+              PopupMenuButton<LicenseSort>(
+                itemBuilder: (context) => [
+                  PopupMenuItem(
+                    value: LicenseSort.name,
+                    child: MenuRow(text: 'Sort by name', checked: _sort == LicenseSort.name),
+                  ),
+                  PopupMenuItem(
+                    value: LicenseSort.license,
+                    child: MenuRow(text: 'Sort by license', checked: _sort == LicenseSort.license),
+                  ),
+                ],
+                onSelected: (newSort) {
+                  _sort = newSort;
+                  _sortPackages();
+                  setState(() {});
+                },
+                tooltip: 'Sort',
+                icon: Icon(AIcons.sort),
+              ),
+            ],
+          ),
+        ),
+        const SizedBox(height: 8),
+        const Padding(
+          padding: EdgeInsets.symmetric(horizontal: 8),
+          child: Text('The following sets forth attribution notices for third party software that may be contained in this application.'),
+        ),
+      ],
+    );
+  }
+}
+
+class LicenseRow extends StatelessWidget {
+  final Dependency package;
+
+  const LicenseRow(this.package);
+
+  static const borderRadius = BorderRadius.all(Radius.circular(8));
+
+  @override
+  Widget build(BuildContext context) {
+    final textTheme = Theme.of(context).textTheme;
+    final bodyTextStyle = textTheme.bodyText2;
+    final subColor = bodyTextStyle.color.withOpacity(.6);
+
+    return Padding(
+      padding: const EdgeInsets.only(top: 16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          InkWell(
+            borderRadius: borderRadius,
+            onTap: () => launch(package.sourceUrl),
+            child: Padding(
+              padding: const EdgeInsets.all(8),
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Text(
+                    package.name,
+                    style: TextStyle(fontWeight: FontWeight.bold),
+                  ),
+                  const SizedBox(width: 8),
+                  Icon(
+                    AIcons.openInNew,
+                    size: bodyTextStyle.fontSize,
+                  )
+                ],
+              ),
+            ),
+          ),
+          Padding(
+            padding: const EdgeInsetsDirectional.only(start: 16),
+            child: InkWell(
+              borderRadius: borderRadius,
+              onTap: () => launch(package.licenseUrl),
+              child: Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Text(
+                      package.license,
+                      style: TextStyle(color: subColor),
+                    ),
+                    const SizedBox(width: 8),
+                    Icon(
+                      AIcons.openInNew,
+                      size: bodyTextStyle.fontSize,
+                      color: subColor,
+                    )
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+enum LicenseSort { license, name }

lib/widgets/app_drawer.dart

@@ -11,7 +11,7 @@ import 'package:aves/model/filters/tag.dart';
 import 'package:aves/model/mime_types.dart';
 import 'package:aves/model/settings.dart';
 import 'package:aves/utils/android_file_utils.dart';
-import 'package:aves/utils/color_utils.dart';
+import 'package:aves/widgets/about/about_page.dart';
 import 'package:aves/widgets/album/collection_page.dart';
 import 'package:aves/widgets/common/aves_logo.dart';
 import 'package:aves/widgets/common/icons.dart';
@@ -87,6 +87,15 @@ class _AppDrawerState extends State<AppDrawer> {
       title: 'Favourites',
       filter: FavouriteFilter(),
     );
+    final aboutEntry = SafeArea(
+      top: false,
+      bottom: false,
+      child: ListTile(
+        leading: const Icon(AIcons.info),
+        title: const Text('About'),
+        onTap: () => _goToAbout(context),
+      ),
+    );
 
     final drawerItems = <Widget>[
       header,
@@ -97,6 +106,7 @@ class _AppDrawerState extends State<AppDrawer> {
       _buildRegularAlbumSection(),
       _buildCountrySection(),
       _buildTagSection(),
+      aboutEntry,
       if (kDebugMode) ...[
         const Divider(),
         SafeArea(
@@ -150,35 +160,6 @@ class _AppDrawerState extends State<AppDrawer> {
     );
   }
 
-  Widget _buildLocationEntry(LocationLevel level, String location) {
-    String title;
-    String flag;
-    if (level == LocationLevel.country) {
-      final split = location.split(';');
-      String countryCode;
-      if (split.isNotEmpty) title = split[0];
-      if (split.length > 1) countryCode = split[1];
-      flag = LocationFilter.countryCodeToFlag(countryCode);
-    } else {
-      title = location;
-    }
-    return _FilteredCollectionNavTile(
-      source: source,
-      leading: flag != null
-          ? Text(
-              flag,
-              style: TextStyle(fontSize: IconTheme.of(context).size),
-            )
-          : Icon(
-              AIcons.location,
-              color: stringToColor(title),
-            ),
-      title: title,
-      dense: true,
-      filter: LocationFilter(level, location),
-    );
-  }
-
   Widget _buildSpecialAlbumSection() {
     return StreamBuilder(
         stream: source.eventBus.on<AlbumsChangedEvent>(),
@@ -320,6 +301,16 @@ class _AppDrawerState extends State<AppDrawer> {
     );
   }
 
+  void _goToAbout(BuildContext context) {
+    Navigator.pop(context);
+    Navigator.push(
+      context,
+      MaterialPageRoute(
+        builder: (context) => AboutPage(),
+      ),
+    );
+  }
+
   void _goToDebug(BuildContext context) {
     Navigator.pop(context);
     Navigator.push(

lib/widgets/common/icons.dart

@@ -40,6 +40,7 @@ class AIcons {
   static const IconData search = OMIcons.search;
   static const IconData select = OMIcons.selectAll;
   static const IconData share = OMIcons.share;
+  static const IconData sort = OMIcons.sort;
   static const IconData stats = OMIcons.pieChart;
   static const IconData zoomIn = OMIcons.add;
   static const IconData zoomOut = OMIcons.remove;

pubspec.lock

@@ -303,6 +303,13 @@ packages:
       relative: true
     source: path
     version: "0.9.2"
+  platform_detect:
+    dependency: transitive
+    description:
+      name: platform_detect
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.0"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -324,6 +331,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.1.1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.4"
   qr:
     dependency: transitive
     description:
@@ -469,6 +483,34 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.6"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.4.10"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.1+7"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.7"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.1+6"
   utf:
     dependency: transitive
     description:

pubspec.yaml

@@ -47,19 +47,19 @@ dependencies:
     path: ../expansion_tile_card
 #    git:
 #      url: git://github.com/deckerst/expansion_tile_card.git
+  flushbar:
   flutter_ijkplayer:
     path: ../flutter_ijkplayer
   #    git:
   #      url: git://github.com/deckerst/flutter_ijkplayer.git
-  flushbar:
   flutter_native_timezone:
   flutter_svg:
   geocoder:
   google_maps_flutter:
   intl:
   outline_material_icons:
-  pdf:
   palette_generator:
+  pdf:
   pedantic:
   percent_indicator:
   permission_handler:
@@ -76,6 +76,7 @@ dependencies:
   sqflite:
   streams_channel:
   tuple:
+  url_launcher:
   uuid:
 
 dev_dependencies: