Add class ForumTopicIcon.

CMakeLists.txt

@@ -352,6 +352,7 @@ set(TDLIB_SOURCE
   td/telegram/files/FileUploader.cpp
   td/telegram/files/PartsManager.cpp
   td/telegram/files/ResourceManager.cpp
+  td/telegram/ForumTopicIcon.cpp
   td/telegram/ForumTopicInfo.cpp
   td/telegram/Game.cpp
   td/telegram/GameManager.cpp
@@ -580,6 +581,7 @@ set(TDLIB_SOURCE
   td/telegram/files/ResourceManager.h
   td/telegram/files/ResourceState.h
   td/telegram/FolderId.h
+  td/telegram/ForumTopicIcon.h
   td/telegram/ForumTopicInfo.h
   td/telegram/FullMessageId.h
   td/telegram/Game.h

td/generate/scheme/td_api.tl

@@ -1298,16 +1298,18 @@ webAppInfo launch_id:int64 url:string = WebAppInfo;
 messageThreadInfo chat_id:int53 message_thread_id:int53 reply_info:messageReplyInfo unread_message_count:int32 messages:vector<message> draft_message:draftMessage = MessageThreadInfo;
 
 
+//@description Describes a forum topic icon @color Color of the topic icon in RGB format @custom_emoji_id Unique identifier of the custom emoji shown on the topic icon; 0 if none
+forumTopicIcon color:int32 custom_emoji_id:int64 = ForumTopicIcon;
+
 //@description Contains basic information about a forum topic
 //@message_thread_id Thread identifier of the topic
 //@title Title of the topic
-//@icon_color Color of the topic icon
-//@icon_custom_emoji_id Unique identifier of the custom emoji shown on the topic icon; 0 if none
+//@icon Icon of the topic
 //@creation_date Date the topic was created
 //@creator_id Identifier of the creator of the topic
 //@is_outgoing True, if the topic was created by the current user
 //@is_closed True, if the topic is closed
-forumTopicInfo message_thread_id:int53 title:string icon_color:int32 icon_custom_emoji_id:int64 creation_date:int32 creator_id:MessageSender is_outgoing:Bool is_closed:Bool = ForumTopicInfo;
+forumTopicInfo message_thread_id:int53 title:string icon:forumTopicIcon creation_date:int32 creator_id:MessageSender is_outgoing:Bool is_closed:Bool = ForumTopicInfo;
 
 
 //@class RichText @description Describes a text object inside an instant-view web page

td/telegram/ForumTopicIcon.cpp

@@ -0,0 +1,27 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/telegram/ForumTopicIcon.h"
+
+namespace td {
+
+ForumTopicIcon::ForumTopicIcon(int32 color, int64 custom_emoji_id)
+    : color_(color & 0xFFFFFF), custom_emoji_id_(custom_emoji_id) {
+}
+
+td_api::object_ptr<td_api::forumTopicIcon> ForumTopicIcon::get_forum_topic_icon_object() const {
+  return td_api::make_object<td_api::forumTopicIcon>(color_, custom_emoji_id_.get());
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const ForumTopicIcon &topic_icon) {
+  string_builder << "icon color " << topic_icon.color_;
+  if (topic_icon.custom_emoji_id_.is_valid()) {
+    string_builder << " and " << topic_icon.custom_emoji_id_;
+  }
+  return string_builder;
+}
+
+}  // namespace td

td/telegram/ForumTopicIcon.h

@@ -0,0 +1,32 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/telegram/CustomEmojiId.h"
+#include "td/telegram/td_api.h"
+
+#include "td/utils/common.h"
+#include "td/utils/StringBuilder.h"
+
+namespace td {
+
+class ForumTopicIcon {
+  int32 color_ = 0x6FB9F0;
+  CustomEmojiId custom_emoji_id_;
+
+  friend StringBuilder &operator<<(StringBuilder &string_builder, const ForumTopicIcon &topic_icon);
+
+ public:
+  ForumTopicIcon() = default;
+  ForumTopicIcon(int32 color, int64 custom_emoji_id);
+
+  td_api::object_ptr<td_api::forumTopicIcon> get_forum_topic_icon_object() const;
+};
+
+StringBuilder &operator<<(StringBuilder &string_builder, const ForumTopicIcon &topic_icon);
+
+}  // namespace td

td/telegram/ForumTopicInfo.cpp

@@ -24,18 +24,15 @@ ForumTopicInfo::ForumTopicInfo(Td *td, const tl_object_ptr<telegram_api::ForumTo
 
   top_thread_message_id_ = MessageId(ServerMessageId(forum_topic->id_));
   title_ = forum_topic->title_;
-  icon_color_ = (forum_topic->icon_color_ & 0xFFFFFF);
-  if ((forum_topic->flags_ & telegram_api::forumTopic::ICON_EMOJI_ID_MASK) != 0) {
-    icon_custom_emoji_id_ = CustomEmojiId(forum_topic->icon_emoji_id_);
-  }
+  icon_ = ForumTopicIcon(forum_topic->icon_color_, forum_topic->icon_emoji_id_);
   creation_date_ = forum_topic->date_;
   creator_dialog_id_ = DialogId(forum_topic->from_id_);
   is_outgoing_ = forum_topic->my_;
   is_closed_ = forum_topic->closed_;
+
   if (creation_date_ <= 0 || !top_thread_message_id_.is_valid() || !creator_dialog_id_.is_valid()) {
     LOG(ERROR) << "Receive " << to_string(forum_topic_ptr);
-    top_thread_message_id_ = MessageId();
-    return;
+    *this = ForumTopicInfo();
   }
 }
 
@@ -45,14 +42,14 @@ td_api::object_ptr<td_api::forumTopicInfo> ForumTopicInfo::get_forum_topic_info_
   }
 
   auto creator_id = get_message_sender_object_const(td, creator_dialog_id_, "get_forum_topic_info_object");
-  return td_api::make_object<td_api::forumTopicInfo>(top_thread_message_id_.get(), title_, icon_color_,
-                                                     icon_custom_emoji_id_.get(), creation_date_, std::move(creator_id),
-                                                     is_outgoing_, is_closed_);
+  return td_api::make_object<td_api::forumTopicInfo>(top_thread_message_id_.get(), title_,
+                                                     icon_.get_forum_topic_icon_object(), creation_date_,
+                                                     std::move(creator_id), is_outgoing_, is_closed_);
 }
 
 StringBuilder &operator<<(StringBuilder &string_builder, const ForumTopicInfo &topic_info) {
   return string_builder << "Forum topic " << topic_info.top_thread_message_id_.get() << '/' << topic_info.title_
-                        << " by " << topic_info.creator_dialog_id_;
+                        << " by " << topic_info.creator_dialog_id_ << " with " << topic_info.icon_;
 }
 
 }  // namespace td

td/telegram/ForumTopicInfo.h

@@ -6,8 +6,8 @@
 //
 #pragma once
 
-#include "td/telegram/CustomEmojiId.h"
 #include "td/telegram/DialogId.h"
+#include "td/telegram/ForumTopicIcon.h"
 #include "td/telegram/MessageId.h"
 #include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.h"
@@ -22,8 +22,7 @@ class Td;
 class ForumTopicInfo {
   MessageId top_thread_message_id_;
   string title_;
-  int32 icon_color_ = 0x6FB9F0;
-  CustomEmojiId icon_custom_emoji_id_;
+  ForumTopicIcon icon_;
   int32 creation_date_ = 0;
   DialogId creator_dialog_id_;
   bool is_outgoing_ = false;