Replace identicon with jdenticon

lib/ui/routes/settings/account_image_settings.dart

@@ -8,13 +8,12 @@ import 'package:comunic/ui/widgets/settings/header_spacer_section.dart';
 import 'package:comunic/ui/widgets/settings/multi_choices_settings_tile.dart';
 import 'package:comunic/utils/account_utils.dart';
 import 'package:comunic/utils/files_utils.dart';
+import 'package:comunic/utils/identicon_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_settings_ui/flutter_settings_ui.dart';
-import 'package:identicon/identicon.dart';
 import 'package:image_cropper/image_cropper.dart';
-import 'package:random_string/random_string.dart';
 
 import '../../../utils/log_utils.dart';
 import '../../../utils/ui_utils.dart';
@@ -167,7 +166,7 @@ class _AccountImageSettingsScreenState
   /// Generate a random account image
   void _generateRandomAccountImage() async {
     // Generate emoticon
-    final bytes = Identicon().generate(randomString(10));
+    final bytes = await genIdenticon(context);
 
     if (!await SettingsHelper.uploadAccountImageFromMemory(bytes)) {
       showSimpleSnack(

lib/ui/screens/group_settings_screen.dart

@@ -19,14 +19,13 @@ import 'package:comunic/ui/widgets/settings/header_spacer_section.dart';
 import 'package:comunic/ui/widgets/settings/multi_choices_settings_tile.dart';
 import 'package:comunic/ui/widgets/settings/text_settings_edit_tile.dart';
 import 'package:comunic/utils/files_utils.dart';
+import 'package:comunic/utils/identicon_utils.dart';
 import 'package:comunic/utils/input_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/log_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_settings_ui/flutter_settings_ui.dart';
-import 'package:identicon/identicon.dart';
-import 'package:random_string/random_string.dart';
 
 /// Groups settings screen
 ///
@@ -432,8 +431,7 @@ class _GroupSettingsScreenState extends SafeState<GroupSettingsScreen> {
   /// Generate a new random logo for the group
   void _generateRandomLogo() async {
     try {
-      final newLogo =
+      final newLogo = await genIdenticon(context);
-          Identicon(rows: 10, cols: 10).generate(randomString(20), size: 100);
       await _doUploadLogo(newLogo);
     } catch (e, stack) {
       print("Could not generate new logo! $e\n$stack");

lib/utils/identicon_utils.dart

@@ -0,0 +1,52 @@
+import 'dart:typed_data';
+import 'dart:ui';
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:jdenticon_dart/jdenticon_dart.dart';
+import 'package:random_string/random_string.dart';
+
+/// Identicon utilities
+///
+/// @author Pierre Hubert
+
+
+// Based on https://stackoverflow.com/a/63215502/3781411
+Future<Uint8List> svgToPng(BuildContext context, String svgString,
+    {int svgWidth, int svgHeight}) async {
+  DrawableRoot svgDrawableRoot = await svg.fromSvgString(svgString, null);
+
+  // to have a nice rendering it is important to have the exact original height and width,
+  // the easier way to retrieve it is directly from the svg string
+  // but be careful, this is an ugly fix for a flutter_svg problem that works
+  // with my images
+  String temp = svgString.substring(svgString.indexOf('height="') + 8);
+  int originalHeight =
+      svgHeight ?? int.parse(temp.substring(0, temp.indexOf('p')));
+  temp = svgString.substring(svgString.indexOf('width="') + 7);
+  int originalWidth =
+      svgWidth ?? int.parse(temp.substring(0, temp.indexOf('p')));
+
+  // toPicture() and toImage() don't seem to be pixel ratio aware, so we calculate the actual sizes here
+  double devicePixelRatio = MediaQuery.of(context).devicePixelRatio;
+
+  double width = originalHeight *
+      devicePixelRatio; // where 32 is your SVG's original width
+  double height = originalWidth * devicePixelRatio; // same thing
+
+  // Convert to ui.Picture
+  final picture = svgDrawableRoot.toPicture(size: Size(width, height));
+
+  // Convert to ui.Image. toImage() takes width and height as parameters
+  // you need to find the best size to suit your needs and take into account the screen DPI
+  final image = await picture.toImage(width.toInt(), height.toInt());
+  ByteData bytes = await image.toByteData(format: ImageByteFormat.png);
+
+  return bytes.buffer.asUint8List();
+}
+
+Future<Uint8List> genIdenticon(BuildContext context, {int size: 100}) async {
+  final identicon = Jdenticon.toSvg(randomString(25), size: size);
+
+  return svgToPng(context, identicon, svgHeight: size, svgWidth: size);
+}

pubspec.lock

@@ -7,14 +7,14 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.13"
+    version: "3.1.6"
   args:
     dependency: transitive
     description:
       name: args
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.0"
+    version: "2.3.0"
   async:
     dependency: transitive
     description:
@@ -113,13 +113,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
-  convert:
-    dependency: transitive
-    description:
-      name: convert
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.1"
   cross_file:
     dependency: transitive
     description:
@@ -133,7 +126,7 @@ packages:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.1"
   csslib:
     dependency: transitive
     description:
@@ -285,7 +278,7 @@ packages:
       name: flutter_launcher_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.1"
+    version: "0.9.2"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -300,6 +293,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  flutter_svg:
+    dependency: "direct main"
+    description:
+      name: flutter_svg
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -338,20 +338,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.0"
-  identicon:
-    dependency: "direct main"
-    description:
-      name: identicon
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.1.1"
   image:
     dependency: transitive
     description:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.19"
+    version: "3.1.0"
   image_cropper:
     dependency: "direct main"
     description:
@@ -387,6 +380,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.17.0"
+  jdenticon_dart:
+    dependency: "direct main"
+    description:
+      name: jdenticon_dart
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   js:
     dependency: transitive
     description:
@@ -443,6 +443,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0"
+  path_drawing:
+    dependency: transitive
+    description:
+      name: path_drawing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -519,7 +533,7 @@ packages:
       name: petitparser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.0"
+    version: "4.4.0"
   photo_view:
     dependency: "direct main"
     description:
@@ -762,7 +776,7 @@ packages:
       name: uuid
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.2"
+    version: "3.0.5"
   vector_math:
     dependency: transitive
     description:
@@ -867,14 +881,14 @@ packages:
       name: xml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.5.1"
+    version: "5.3.1"
   yaml:
     dependency: transitive
     description:
       name: yaml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.1"
+    version: "3.1.0"
 sdks:
   dart: ">=2.15.0 <3.0.0"
   flutter: ">=2.5.0"

pubspec.yaml

@@ -59,7 +59,10 @@ dependencies:
   flutter_settings_ui: ^2.0.1
 
   # Generate identicons
-  identicon: ^0.1.1
+  jdenticon_dart: ^2.0.0
+
+  # Render SVG images
+  flutter_svg: ^1.0.0
 
   # Generate random strings
   random_string: ^2.0.1
@@ -138,7 +141,7 @@ dev_dependencies:
     sdk: flutter
 
   # Generate iOS application icons
-  flutter_launcher_icons: ^0.8.1
+  flutter_launcher_icons: ^0.9.2
 
 flutter_icons:
   android: false