[feat] remote host names will be shown below thumbnails

src/single_window/main_window.cpp

@@ -55,6 +55,7 @@ int Render::MainWindow() {
   ImGui::TextColored(
       ImVec4(0.0f, 0.0f, 0.0f, 0.5f), "%s",
       localization::recent_connections[localization_language_index_].c_str());
+  ImGui::SetWindowFontScale(1.0f);
 
   draw_list->AddLine(
       ImVec2(25.0f, title_bar_height_ + local_window_height_ + 35.0f),
@@ -75,11 +76,35 @@ int Render::MainWindow() {
 }
 
 int Render::ShowRecentConnections() {
-  for (int i = 0; i < recent_connection_textures_.size(); i++) {
-    ImGui::Image((ImTextureID)(intptr_t)recent_connection_textures_[i],
+  for (auto it = recent_connection_textures_.begin();
+       it != recent_connection_textures_.end(); ++it) {
+    std::string recent_connection_sub_window_name =
+        "RecentConnectionsSubWindow" + it->first;
+    ImGui::BeginChild(recent_connection_sub_window_name.c_str(),
+                      ImVec2(recent_connection_image_width_ + 16.0f,
+                             recent_connection_image_height_ + 32.0f),
+                      ImGuiChildFlags_Border,
+                      ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse |
+                          ImGuiWindowFlags_NoMove |
+                          ImGuiWindowFlags_NoTitleBar |
+                          ImGuiWindowFlags_NoBringToFrontOnFocus |
+                          ImGuiWindowFlags_NoScrollbar);
+    ImGui::Image((ImTextureID)(intptr_t)it->second,
                  ImVec2((float)recent_connection_image_width_,
                         (float)recent_connection_image_height_));
+    ImGui::SetWindowFontScale(0.4f);
+
+    ImVec2 window_size = ImGui::GetWindowSize();
+    ImVec2 text_size = ImGui::CalcTextSize(it->first.c_str());
+    ImVec2 pos = ImGui::GetCursorPos();
+    pos.x = (window_size.x - text_size.x) / 2.0f;
+    ImGui::SetCursorPos(pos);
+
+    ImGui::Text("%s", it->first.c_str());
+    ImGui::SetWindowFontScale(1.0f);
+    ImGui::EndChild();
     ImGui::SameLine();
   }
+
   return 0;
 }

src/single_window/render.h

@@ -225,7 +225,7 @@ class Render {
   bool stream_window_inited_ = false;
 
   // recent connections
-  std::vector<SDL_Texture *> recent_connection_textures_;
+  std::map<std::string, SDL_Texture *> recent_connection_textures_;
   int recent_connection_image_width_ = 128;
   int recent_connection_image_height_ = 72;
   uint32_t recent_connection_image_save_time_ = 0;

src/single_window/thumbnail.cpp

@@ -173,8 +173,8 @@ std::vector<std::filesystem::path> Thumbnail::FindThumbnailPath(
 }
 
 int Thumbnail::LoadThumbnail(SDL_Renderer* renderer,
-                             std::vector<SDL_Texture*>& textures, int* width,
-                             int* height) {
+                             std::map<std::string, SDL_Texture*>& textures,
+                             int* width, int* height) {
   std::vector<std::filesystem::path> image_path =
       FindThumbnailPath(image_path_);
 
@@ -182,10 +182,14 @@ int Thumbnail::LoadThumbnail(SDL_Renderer* renderer,
     return -1;
   } else {
     for (int i = 0; i < image_path.size(); i++) {
-      textures.push_back(nullptr);
+      size_t pos1 = image_path[i].string().find('\\') + 1;
+      size_t pos2 = image_path[i].string().rfind('@');
+      std::string host_name = image_path[i].string().substr(pos1, pos2 - pos1);
+      textures[host_name] = nullptr;
       LoadTextureFromFile(image_path[i].string().c_str(), renderer,
-                          &(textures[i]), width, height);
+                          &(textures[host_name]), width, height);
     }
     return 0;
   }
+  return 0;
 }

src/single_window/thumbnail.h

@@ -22,8 +22,9 @@ class Thumbnail {
                       const std::string& host_name,
                       const std::string& remote_id);
 
-  int LoadThumbnail(SDL_Renderer* renderer, std::vector<SDL_Texture*>& textures,
-                    int* width, int* height);
+  int LoadThumbnail(SDL_Renderer* renderer,
+                    std::map<std::string, SDL_Texture*>& textures, int* width,
+                    int* height);
 
  private:
   std::vector<std::filesystem::path> FindThumbnailPath(