fix conversation avatars for NC26

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.kt

@@ -184,7 +184,7 @@ class ConversationItem(
                 ConversationType.ROOM_GROUP_CALL,
                 ConversationType.FORMER_ONE_TO_ONE,
                 ConversationType.ROOM_PUBLIC_CALL ->
-                    holder.binding.dialogAvatar.loadConversationAvatar(user, model, false)
+                    holder.binding.dialogAvatar.loadConversationAvatar(user, model, false, viewThemeUtils)
 
                 else -> holder.binding.dialogAvatar.visibility = View.GONE
             }

app/src/main/java/com/nextcloud/talk/conversationinfo/ConversationInfoActivity.kt

@@ -807,7 +807,7 @@ class ConversationInfoActivity :
             }
 
             Conversation.ConversationType.ROOM_GROUP_CALL, Conversation.ConversationType.ROOM_PUBLIC_CALL -> {
-                binding.avatarImage.loadConversationAvatar(conversationUser, conversation!!, false)
+                binding.avatarImage.loadConversationAvatar(conversationUser, conversation!!, false, viewThemeUtils)
             }
 
             Conversation.ConversationType.ROOM_SYSTEM -> {

app/src/main/java/com/nextcloud/talk/conversationinfoedit/ConversationInfoEditActivity.kt

@@ -370,7 +370,7 @@ class ConversationInfoEditActivity :
             }
 
             Conversation.ConversationType.ROOM_GROUP_CALL, Conversation.ConversationType.ROOM_PUBLIC_CALL -> {
-                binding.avatarImage.loadConversationAvatar(conversationUser, conversation!!, false)
+                binding.avatarImage.loadConversationAvatar(conversationUser, conversation!!, false, viewThemeUtils)
             }
 
             Conversation.ConversationType.ROOM_SYSTEM -> {

app/src/main/java/com/nextcloud/talk/extensions/ImageViewExtensions.kt

@@ -55,7 +55,8 @@ private const val TAG = "ImageViewExtensions"
 fun ImageView.loadConversationAvatar(
     user: User,
     conversation: Conversation,
-    ignoreCache: Boolean
+    ignoreCache: Boolean,
+    viewThemeUtils: ViewThemeUtils?
 ): io.reactivex.disposables
 .Disposable {
     val imageRequestUri = ApiUtils.getUrlForConversationAvatarWithVersion(
@@ -66,6 +67,18 @@ fun ImageView.loadConversationAvatar(
         conversation.avatarVersion
     )
 
+    if (conversation.avatarVersion.isNullOrEmpty() && viewThemeUtils != null) {
+        when (conversation.type) {
+            Conversation.ConversationType.ROOM_GROUP_CALL ->
+                return loadDefaultGroupCallAvatar(viewThemeUtils)
+
+            Conversation.ConversationType.ROOM_PUBLIC_CALL ->
+                return loadDefaultPublicCallAvatar(viewThemeUtils)
+
+            else -> {}
+        }
+    }
+
     // these placeholders are only used when the request fails completely. The server also return default avatars
     // when no own images are set. (although these default avatars can not be themed for the android app..)
     val errorPlaceholder =
@@ -263,6 +276,15 @@ fun ImageView.loadDefaultGroupCallAvatar(viewThemeUtils: ViewThemeUtils): io.rea
     return loadUserAvatar(data)
 }
 
+fun ImageView.loadDefaultPublicCallAvatar(viewThemeUtils: ViewThemeUtils): io.reactivex.disposables.Disposable {
+    val data: Any = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        viewThemeUtils.talk.themePlaceholderAvatar(this, R.drawable.ic_avatar_link) as Any
+    } else {
+        R.drawable.ic_circular_link
+    }
+    return loadUserAvatar(data)
+}
+
 fun ImageView.loadMailAvatar(viewThemeUtils: ViewThemeUtils): io.reactivex.disposables.Disposable {
     val data: Any = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
         viewThemeUtils.talk.themePlaceholderAvatar(this, R.drawable.ic_avatar_mail) as Any

app/src/main/res/drawable/ic_avatar_link.xml

@@ -0,0 +1,31 @@
+<!--
+  ~ Nextcloud Talk application
+  ~
+  ~ @author Andy Scherzinger
+  ~ Copyright (C) 2022 Andy Scherzinger <info@andy-scherzinger.de>
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, either version 3 of the License, or
+  ~ at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#ffffff"
+        android:fillType="nonZero"
+        android:pathData="M13,5.921L9.818,9.105C9.111,9.812 8.781,10.723 8.83,11.562C8.88,12.401 9.263,13.146 9.818,13.701L11.23,12.285C10.663,11.717 10.686,11.065 11.232,10.519L14.414,7.337C14.939,6.812 15.664,6.814 16.186,7.335C16.668,7.891 16.713,8.574 16.182,9.105L15.362,9.925C15.917,10.71 16.007,11.291 15.955,12.16L17.596,10.519C18.833,9.282 18.833,7.154 17.596,5.917C16.36,4.681 14.254,4.706 13,5.921ZM13.707,9.806L12.293,11.224L12.297,11.224C12.847,11.774 12.804,12.482 12.293,12.994L9.111,16.175C8.415,16.767 7.813,16.646 7.342,16.175C6.715,15.549 6.842,14.907 7.342,14.407L8.192,13.56C7.636,12.777 7.543,12.195 7.594,11.328L5.928,12.994C4.689,14.233 4.692,16.354 5.928,17.589C7.163,18.825 9.29,18.825 10.526,17.589L13.707,14.407C14.416,13.699 14.747,12.789 14.698,11.949C14.65,11.109 14.266,10.362 13.709,9.808L13.707,9.806Z" />
+</vector>