feat: Emoji related fixes

- adds Emoji autocomplete following popular `:` hotkey
- adds Famedly's famous smart Emojis (tm)
- syncs recent Emojis with SDK

Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

lib/pages/chat/chat_emoji_picker.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
 
+import 'package:fluffychat/utils/fluffy_emoji_picker.dart';
 import 'chat.dart';
 
 class ChatEmojiPicker extends StatelessWidget {
@@ -19,6 +20,7 @@ class ChatEmojiPicker extends StatelessWidget {
           ? EmojiPicker(
               onEmojiSelected: controller.onEmojiSelected,
               onBackspacePressed: controller.emojiPickerBackspace,
+              customWidget: (c, s) => FluffyEmojiPickerView(c, s),
             )
           : null,
     );

lib/pages/chat/input_bar.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 import 'package:cached_network_image/cached_network_image.dart';
+import 'package:emojis/emoji.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:flutter_typeahead/flutter_typeahead.dart';
 import 'package:matrix/matrix.dart';
@@ -54,7 +55,7 @@ class InputBar extends StatelessWidget {
     final List<Map<String, String?>> ret = <Map<String, String?>>[];
     const maxResults = 30;
 
-    final commandMatch = RegExp(r'^\/([\w]*)$').firstMatch(searchText);
+    final commandMatch = RegExp(r'^/(\w*)$').firstMatch(searchText);
     if (commandMatch != null) {
       final commandSearch = commandMatch[1]!.toLowerCase();
       for (final command in room.client.commands.keys) {
@@ -114,6 +115,39 @@ class InputBar extends StatelessWidget {
           }
         }
       }
+      // aside of emote packs, also propose normal (tm) unicode emojis
+      final matchingUnicodeEmojis = Emoji.all()
+          .where((element) => [element.name, ...element.keywords]
+              .any((element) => element.toLowerCase().contains(emoteSearch)))
+          .toList();
+      // sort by the index of the search term in the name in order to have
+      // best matches first
+      // (thanks for the hint by github.com/nextcloud/circles devs)
+      matchingUnicodeEmojis.sort((a, b) {
+        final indexA = a.name.indexOf(emoteSearch);
+        final indexB = b.name.indexOf(emoteSearch);
+        if (indexA == -1 || indexB == -1) {
+          if (indexA == indexB) return 0;
+          if (indexA == -1) {
+            return 1;
+          } else {
+            return 0;
+          }
+        }
+        return indexA.compareTo(indexB);
+      });
+      for (final emoji in matchingUnicodeEmojis) {
+        ret.add({
+          'type': 'emoji',
+          'emoji': emoji.char,
+          // don't include sub-group names, splitting at `:` hence
+          'label': '${emoji.char} - ${emoji.name.split(':').first}',
+          'current_word': ':$emoteSearch',
+        });
+        if (ret.length > maxResults) {
+          break;
+        }
+      }
     }
     final userMatch = RegExp(r'(?:\s|^)@([-\w]+)$').firstMatch(searchText);
     if (userMatch != null) {
@@ -205,6 +239,17 @@ class InputBar extends StatelessWidget {
         ),
       );
     }
+    if (suggestion['type'] == 'emoji') {
+      final label = suggestion['label']!;
+      return Tooltip(
+        message: label,
+        waitDuration: const Duration(days: 1), // don't show on hover
+        child: Container(
+          padding: padding,
+          child: Text(label, style: const TextStyle(fontFamily: 'monospace')),
+        ),
+      );
+    }
     if (suggestion['type'] == 'emote') {
       final ratio = MediaQuery.of(context).devicePixelRatio;
       final url = Uri.parse(suggestion['mxc'] ?? '').getThumbnail(
@@ -282,10 +327,17 @@ class InputBar extends StatelessWidget {
     if (suggestion['type'] == 'command') {
       insertText = suggestion['name']! + ' ';
       startText = replaceText.replaceAllMapped(
-        RegExp(r'^(\/[\w]*)$'),
+        RegExp(r'^(/\w*)$'),
         (Match m) => '/' + insertText,
       );
     }
+    if (suggestion['type'] == 'emoji') {
+      insertText = suggestion['emoji']! + ' ';
+      startText = replaceText.replaceAllMapped(
+        suggestion['current_word']!,
+        (Match m) => insertText,
+      );
+    }
     if (suggestion['type'] == 'emote') {
       var isUnique = true;
       final insertEmote = suggestion['name'];
@@ -376,10 +428,8 @@ class InputBar extends StatelessWidget {
           hideOnEmpty: true,
           hideOnLoading: true,
           keepSuggestionsOnSuggestionSelected: true,
-
-          debounceDuration: const Duration(
-              milliseconds:
-                  50), // show suggestions after 50ms idle time (default is 300)
+          debounceDuration: const Duration(milliseconds: 50),
+          // show suggestions after 50ms idle time (default is 300)
           textFieldConfiguration: TextFieldConfiguration(
             minLines: minLines,
             maxLines: maxLines,
@@ -407,8 +457,8 @@ class InputBar extends StatelessWidget {
           onSuggestionSelected: (Map<String, String?> suggestion) =>
               insertSuggestion(context, suggestion),
           errorBuilder: (BuildContext context, Object? error) => Container(),
-          loadingBuilder: (BuildContext context) =>
-              Container(), // fix loading briefly flickering a dark box
+          loadingBuilder: (BuildContext context) => Container(),
+          // fix loading briefly flickering a dark box
           noItemsFoundBuilder: (BuildContext context) =>
               Container(), // fix loading briefly showing no suggestions
         ),

lib/pages/chat/reactions_picker.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import 'package:emoji_proposal/emoji_proposal.dart';
 import 'package:matrix/matrix.dart';
 
 import 'package:fluffychat/config/app_config.dart';
@@ -8,6 +9,7 @@ import 'package:fluffychat/pages/chat/chat.dart';
 
 class ReactionsPicker extends StatelessWidget {
   final ChatController controller;
+
   const ReactionsPicker(this.controller, {Key? key}) : super(key: key);
 
   @override
@@ -26,7 +28,13 @@ class ReactionsPicker extends StatelessWidget {
           if (!display) {
             return Container();
           }
-          final emojis = List<String>.from(AppEmojis.emojis);
+          final proposals = proposeEmojis(
+              controller.selectedEvents.first.plaintextBody,
+              number: 25,
+              languageCodes: EmojiProposalLanguageCodes.values.toSet());
+          final emojis = proposals.isNotEmpty
+              ? proposals.map((e) => e.char).toList()
+              : List<String>.from(AppEmojis.emojis);
           final allReactionEvents = controller.selectedEvents.first
               .aggregatedEvents(
                   controller.timeline!, RelationshipTypes.reaction)

lib/utils/fluffy_emoji_picker.dart

@@ -0,0 +1,398 @@
+// ignore_for_file: prefer_function_declarations_over_variables, implementation_imports
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
+import 'package:emoji_picker_flutter/src/category_emoji.dart';
+import 'package:emoji_picker_flutter/src/emoji_picker_internal_utils.dart';
+import 'package:emoji_picker_flutter/src/emoji_skin_tones.dart';
+import 'package:emoji_picker_flutter/src/emoji_view_state.dart';
+import 'package:emoji_picker_flutter/src/triangle_shape.dart';
+import 'package:emojis/emoji.dart' as emoji;
+import 'package:matrix/matrix.dart';
+
+import 'package:fluffychat/widgets/matrix.dart';
+
+/// Default EmojiPicker Implementation - adjusted for FluffyChat
+///
+/// Copied and adjusted from: [DefaultEmojiPickerView]
+class FluffyEmojiPickerView extends EmojiPickerBuilder {
+  /// Constructor
+  FluffyEmojiPickerView(Config config, EmojiViewState state)
+      : super(config, state);
+
+  @override
+  _DefaultEmojiPickerViewState createState() => _DefaultEmojiPickerViewState();
+}
+
+class _DefaultEmojiPickerViewState extends State<FluffyEmojiPickerView>
+    with SingleTickerProviderStateMixin {
+  PageController? _pageController;
+  TabController? _tabController;
+  OverlayEntry? _overlay;
+  late final _scrollController = ScrollController();
+  late final _utils = EmojiPickerInternalUtils();
+  final int _skinToneCount = 6;
+  final double tabBarHeight = 46;
+
+  @override
+  void initState() {
+    var initCategory = widget.state.categoryEmoji.indexWhere(
+        (element) => element.category == widget.config.initCategory);
+    if (initCategory == -1) {
+      initCategory = 0;
+    }
+    _tabController = TabController(
+        initialIndex: initCategory,
+        length: widget.state.categoryEmoji.length,
+        vsync: this);
+    _pageController = PageController(initialPage: initCategory)
+      ..addListener(_closeSkinToneDialog);
+    _scrollController.addListener(_closeSkinToneDialog);
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    _closeSkinToneDialog();
+    super.dispose();
+  }
+
+  void _closeSkinToneDialog() {
+    _overlay?.remove();
+    _overlay = null;
+  }
+
+  void _openSkinToneDialog(
+    Emoji emoji,
+    double emojiSize,
+    CategoryEmoji categoryEmoji,
+    int index,
+  ) {
+    _overlay = _buildSkinToneOverlay(
+      emoji,
+      emojiSize,
+      categoryEmoji,
+      index,
+    );
+    Overlay.of(context)?.insert(_overlay!);
+  }
+
+  Widget _buildBackspaceButton() {
+    if (widget.state.onBackspacePressed != null) {
+      return Material(
+        type: MaterialType.transparency,
+        child: IconButton(
+            padding: const EdgeInsets.only(bottom: 2),
+            icon: Icon(
+              Icons.backspace,
+              color: widget.config.backspaceColor,
+            ),
+            onPressed: () {
+              widget.state.onBackspacePressed!();
+            }),
+      );
+    }
+    return Container();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        final emojiSize = widget.config.getEmojiSize(constraints.maxWidth);
+
+        return Container(
+          color: widget.config.bgColor,
+          child: Column(
+            children: [
+              Row(
+                children: [
+                  Expanded(
+                    child: SizedBox(
+                      height: tabBarHeight,
+                      child: TabBar(
+                        labelColor: widget.config.iconColorSelected,
+                        indicatorColor: widget.config.indicatorColor,
+                        unselectedLabelColor: widget.config.iconColor,
+                        controller: _tabController,
+                        labelPadding: EdgeInsets.zero,
+                        onTap: (index) {
+                          _closeSkinToneDialog();
+                          _pageController!.jumpToPage(index);
+                        },
+                        tabs: widget.state.categoryEmoji
+                            .asMap()
+                            .entries
+                            .map<Widget>((item) =>
+                                _buildCategory(item.key, item.value.category))
+                            .toList(),
+                      ),
+                    ),
+                  ),
+                  _buildBackspaceButton(),
+                ],
+              ),
+              Flexible(
+                child: PageView.builder(
+                  itemCount: widget.state.categoryEmoji.length,
+                  controller: _pageController,
+                  onPageChanged: (index) {
+                    _tabController!.animateTo(
+                      index,
+                      duration: widget.config.tabIndicatorAnimDuration,
+                    );
+                  },
+                  itemBuilder: (context, index) =>
+                      _buildPage(emojiSize, widget.state.categoryEmoji[index]),
+                ),
+              ),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  Widget _buildCategory(int index, Category category) {
+    return Tab(
+      icon: Icon(
+        widget.config.getIconForCategory(category),
+      ),
+    );
+  }
+
+  Widget _buildPage(double emojiSize, CategoryEmoji categoryEmoji) {
+    final matrix = Matrix.of(context);
+
+    // Display notice if recent has no entries yet
+    if (categoryEmoji.category == Category.RECENT) {
+      final recent = matrix.client.recentEmojis;
+      final sorted = recent.keys.toList()
+        ..sort((a, b) => recent[b]!.compareTo(recent[a]!));
+      categoryEmoji.emoji = sorted
+          .map((char) => Emoji(emoji.Emoji.byChar(char)?.name ?? '', char))
+          .toList();
+      if (categoryEmoji.emoji.isEmpty) {
+        return _buildNoRecent();
+      }
+    }
+    // Build page normally
+    return GestureDetector(
+      onTap: _closeSkinToneDialog,
+      child: GridView.count(
+        scrollDirection: Axis.vertical,
+        physics: const ScrollPhysics(),
+        controller: _scrollController,
+        shrinkWrap: true,
+        primary: false,
+        padding: const EdgeInsets.all(0),
+        crossAxisCount: widget.config.columns,
+        mainAxisSpacing: widget.config.verticalSpacing,
+        crossAxisSpacing: widget.config.horizontalSpacing,
+        children: categoryEmoji.emoji.asMap().entries.map((item) {
+          final index = item.key;
+          final emoji = item.value;
+          final onPressed = () {
+            _closeSkinToneDialog();
+            matrix.client.addRecentEmoji(emoji.emoji);
+            widget.state.onEmojiSelected(categoryEmoji.category, emoji);
+          };
+
+          final onLongPressed = () {
+            if (!emoji.hasSkinTone || !widget.config.enableSkinTones) {
+              _closeSkinToneDialog();
+              return;
+            }
+            _closeSkinToneDialog();
+            _openSkinToneDialog(emoji, emojiSize, categoryEmoji, index);
+          };
+
+          return _buildButtonWidget(
+            onPressed: onPressed,
+            onLongPressed: onLongPressed,
+            child: _buildEmoji(
+              emojiSize,
+              categoryEmoji,
+              emoji,
+              widget.config.enableSkinTones,
+            ),
+          );
+        }).toList(),
+      ),
+    );
+  }
+
+  /// Build and display Emoji centered of its parent
+  Widget _buildEmoji(
+    double emojiSize,
+    CategoryEmoji categoryEmoji,
+    Emoji emoji,
+    bool showSkinToneIndicator,
+  ) {
+    // FittedBox needed for display, font scale settings
+    return FittedBox(
+      fit: BoxFit.fill,
+      child: Stack(children: [
+        emoji.hasSkinTone && showSkinToneIndicator
+            ? Positioned(
+                bottom: 0,
+                right: 0,
+                child: CustomPaint(
+                  size: const Size(8, 8),
+                  painter: TriangleShape(widget.config.skinToneIndicatorColor),
+                ),
+              )
+            : Container(),
+        Text(
+          emoji.emoji,
+          textScaleFactor: 1.0,
+          style: TextStyle(
+            fontSize: emojiSize,
+            backgroundColor: Colors.transparent,
+          ),
+        ),
+      ]),
+    );
+  }
+
+  /// Build different Button based on ButtonMode
+  Widget _buildButtonWidget({
+    required VoidCallback onPressed,
+    required VoidCallback onLongPressed,
+    required Widget child,
+  }) {
+    if (widget.config.buttonMode == ButtonMode.MATERIAL) {
+      return TextButton(
+        onPressed: onPressed,
+        onLongPress: onLongPressed,
+        child: child,
+        style: ButtonStyle(
+          padding: MaterialStateProperty.all(EdgeInsets.zero),
+          minimumSize: MaterialStateProperty.all(Size.zero),
+          tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+        ),
+      );
+    }
+    return GestureDetector(
+      onLongPress: onLongPressed,
+      child: CupertinoButton(
+        padding: EdgeInsets.zero,
+        onPressed: onPressed,
+        child: child,
+      ),
+    );
+  }
+
+  /// Build Widget for when no recent emoji are available
+  Widget _buildNoRecent() {
+    return Center(
+        child: Text(
+      widget.config.noRecentsText,
+      style: widget.config.noRecentsStyle,
+      textAlign: TextAlign.center,
+    ));
+  }
+
+  /// Overlay for SkinTone
+  OverlayEntry _buildSkinToneOverlay(
+    Emoji emoji,
+    double emojiSize,
+    CategoryEmoji categoryEmoji,
+    int index,
+  ) {
+    // Calculate position of emoji in the grid
+    final row = index ~/ widget.config.columns;
+    final column = index % widget.config.columns;
+    // Calculate position for skin tone dialog
+    final renderBox = context.findRenderObject() as RenderBox;
+    final offset = renderBox.localToGlobal(Offset.zero);
+    final emojiSpace = renderBox.size.width / widget.config.columns;
+    final topOffset = emojiSpace;
+    final leftOffset = _getLeftOffset(emojiSpace, column);
+    final left = offset.dx + column * emojiSpace + leftOffset;
+    final top = tabBarHeight +
+        offset.dy +
+        row * emojiSpace -
+        _scrollController.offset -
+        topOffset;
+
+    // Generate other skintone options
+    final skinTonesEmoji = SkinTone.values
+        .map((skinTone) => _utils.applySkinTone(emoji, skinTone))
+        .toList();
+
+    return OverlayEntry(
+      builder: (context) => Positioned(
+        left: left,
+        top: top,
+        child: Material(
+          elevation: 4.0,
+          child: Container(
+            padding: const EdgeInsets.symmetric(vertical: 4.0),
+            color: widget.config.skinToneDialogBgColor,
+            child: Row(
+              children: [
+                _buildSkinToneEmoji(
+                    categoryEmoji, emoji, emojiSpace, emojiSize),
+                _buildSkinToneEmoji(
+                    categoryEmoji, skinTonesEmoji[0], emojiSpace, emojiSize),
+                _buildSkinToneEmoji(
+                    categoryEmoji, skinTonesEmoji[1], emojiSpace, emojiSize),
+                _buildSkinToneEmoji(
+                    categoryEmoji, skinTonesEmoji[2], emojiSpace, emojiSize),
+                _buildSkinToneEmoji(
+                    categoryEmoji, skinTonesEmoji[3], emojiSpace, emojiSize),
+                _buildSkinToneEmoji(
+                    categoryEmoji, skinTonesEmoji[4], emojiSpace, emojiSize),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  // Build Emoji inside skin tone dialog
+  Widget _buildSkinToneEmoji(
+    CategoryEmoji categoryEmoji,
+    Emoji emoji,
+    double width,
+    double emojiSize,
+  ) {
+    return SizedBox(
+      width: width,
+      height: width,
+      child: _buildButtonWidget(
+        onPressed: () {
+          widget.state.onEmojiSelected(categoryEmoji.category, emoji);
+          _closeSkinToneDialog();
+        },
+        onLongPressed: () {},
+        child: _buildEmoji(emojiSize, categoryEmoji, emoji, false),
+      ),
+    );
+  }
+
+  // Calucates the offset from the middle of selected emoji to the left side
+  // of the skin tone dialog
+  // Case 1: Selected Emoji is close to left border and offset needs to be
+  // reduced
+  // Case 2: Selected Emoji is close to right border and offset needs to be
+  // larger than half of the whole width
+  // Case 3: Enough space to left and right border and offset can be half
+  // of whole width
+  double _getLeftOffset(double emojiWidth, int column) {
+    final remainingColumns =
+        widget.config.columns - (column + 1 + (_skinToneCount ~/ 2));
+    if (column >= 0 && column < 3) {
+      return -1 * column * emojiWidth;
+    } else if (remainingColumns < 0) {
+      return -1 *
+          ((_skinToneCount ~/ 2 - 1) + -1 * remainingColumns) *
+          emojiWidth;
+    }
+    return -1 * ((_skinToneCount ~/ 2) * emojiWidth) + emojiWidth / 2;
+  }
+}

pubspec.lock

@@ -388,6 +388,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.2"
+  emoji_proposal:
+    dependency: "direct main"
+    description:
+      name: emoji_proposal
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.1"
+  emojis:
+    dependency: "direct main"
+    description:
+      name: emojis
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.9.9"
   encrypt:
     dependency: "direct main"
     description:
@@ -1416,6 +1430,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.3"
+  remove_emoji:
+    dependency: transitive
+    description:
+      name: remove_emoji
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.7"
   rxdart:
     dependency: transitive
     description:
@@ -1437,6 +1458,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.2"
+  sentiment_dart:
+    dependency: transitive
+    description:
+      name: sentiment_dart
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.5"
   sentry:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -24,6 +24,8 @@ dependencies:
   dynamic_color: ^1.2.2
   email_validator: ^2.0.1
   emoji_picker_flutter: ^1.1.2
+  emoji_proposal: ^0.0.1
+  emojis: ^0.9.0
   encrypt: ^5.0.1
   #fcm_shared_isolate: ^0.1.0
   file_picker_cross: ^4.6.0

scripts/enable-android-google-services.patch

@@ -157,9 +157,9 @@ diff --git a/pubspec.yaml b/pubspec.yaml
 index 6999d0b8..b2c9144f 100644
 --- a/pubspec.yaml
 +++ b/pubspec.yaml
-@@ -25,7 +25,7 @@ dependencies:
-   email_validator: ^2.0.1
-   emoji_picker_flutter: ^1.1.2
+@@ -27,7 +27,7 @@ dependencies:
+   emoji_proposal: ^0.0.1
+   emojis: ^0.9.0
    encrypt: ^5.0.1
 -  #fcm_shared_isolate: ^0.1.0
 +  fcm_shared_isolate: ^0.1.0