[feat] use tab bar to manage stream windows

src/single_window/control_bar.cpp

@@ -163,15 +163,6 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
       props->reset_control_bar_pos_ = true;
     }
 
-    ImGui::SameLine();
-    // close button
-    std::string close_button = ICON_FA_XMARK;
-    if (ImGui::Button(close_button.c_str(), ImVec2(25, 25))) {
-      SDL_Event event;
-      event.type = SDL_QUIT;
-      SDL_PushEvent(&event);
-    }
-
     ImGui::SameLine();
 
     if (!props->is_control_bar_in_left_) {

src/single_window/render.cpp

@@ -36,7 +36,8 @@ SDL_HitTestResult Render::HitTestCallback(SDL_Window* window,
   SDL_GetWindowSize(window, &window_width, &window_height);
 
   if (area->y < 30 && area->y > MOUSE_GRAB_PADDING &&
-      area->x < window_width - 120 && area->x > MOUSE_GRAB_PADDING) {
+      area->x < window_width - 120 && area->x > MOUSE_GRAB_PADDING &&
+      !render->is_tab_bar_hovered_) {
     return SDL_HITTEST_DRAGGABLE;
   }
 
@@ -706,6 +707,8 @@ int Render::DrawStreamWindow() {
   ImGui_ImplSDL2_NewFrame();
   ImGui::NewFrame();
 
+  StreamWindow();
+
   if (!fullscreen_button_pressed_) {
     ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
     ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
@@ -715,23 +718,25 @@ int Render::DrawStreamWindow() {
         ImGuiCond_Always);
     ImGui::Begin("StreamWindowTitleBar", nullptr,
                  ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration |
-                     ImGuiWindowFlags_NoBringToFrontOnFocus);
+                     ImGuiWindowFlags_NoBringToFrontOnFocus |
+                     ImGuiWindowFlags_NoDocking);
+
     ImGui::PopStyleColor();
 
     TitleBar(false);
     ImGui::End();
   }
 
-  StreamWindow();
-
   // Rendering
   ImGui::Render();
   SDL_RenderClear(stream_renderer_);
 
   for (auto& it : client_properties_) {
     auto props = it.second;
-    SDL_RenderCopy(stream_renderer_, props->stream_texture_, NULL,
-                   &(props->stream_render_rect_));
+    if (props->tab_selected_) {
+      SDL_RenderCopy(stream_renderer_, props->stream_texture_, NULL,
+                     &(props->stream_render_rect_));
+    }
   }
   ImGui_ImplSDLRenderer2_RenderDrawData(ImGui::GetDrawData(), stream_renderer_);
   SDL_RenderPresent(stream_renderer_);
@@ -955,14 +960,6 @@ void Render::CleanupPeer(std::string host_name,
     LOG_INFO("Destroy peer [{}]", client_id);
     DestroyPeer(&peer_client);
   }
-
-  client_properties_.erase(host_name);
-
-  if (client_properties_.empty()) {
-    SDL_Event event;
-    event.type = SDL_QUIT;
-    SDL_PushEvent(&event);
-  }
 }
 
 void Render::CleanupPeers() {

src/single_window/render.h

@@ -12,6 +12,7 @@
 #include <atomic>
 #include <chrono>
 #include <fstream>
+#include <optional>
 #include <string>
 
 #include "../../thirdparty/projectx/src/interface/x.h"
@@ -21,6 +22,7 @@
 #include "imgui.h"
 #include "imgui_impl_sdl2.h"
 #include "imgui_impl_sdlrenderer2.h"
+#include "imgui_internal.h"
 #include "screen_capturer_factory.h"
 #include "speaker_capturer_factory.h"
 #include "thumbnail.h"
@@ -55,10 +57,10 @@ class Render {
     float sub_stream_window_width_ = 1280;
     float sub_stream_window_height_ = 720;
     float control_window_min_width_ = 20;
-    float control_window_max_width_ = 200;
+    float control_window_max_width_ = 170;
     float control_window_min_height_ = 40;
     float control_window_max_height_ = 150;
-    float control_window_width_ = 200;
+    float control_window_width_ = 170;
     float control_window_height_ = 40;
     float control_bar_pos_x_ = 0;
     float control_bar_pos_y_ = 30;
@@ -79,6 +81,8 @@ class Render {
     size_t video_size_ = 0;
     bool tab_selected_ = false;
     bool tab_opened_ = true;
+    std::optional<float> pos_x_before_docked_;
+    std::optional<float> pos_y_before_docked_;
     float render_window_x_ = 0;
     float render_window_y_ = 0;
     float render_window_width_ = 0;
@@ -357,6 +361,7 @@ class Render {
   bool reload_recent_connections_ = true;
   bool show_confirm_delete_connection_ = false;
   bool delete_connection_ = false;
+  bool is_tab_bar_hovered_ = false;
   std::string delete_connection_name_ = "";
   bool re_enter_remote_id_ = false;
   double copy_start_time_ = 0;

src/single_window/stream_window.cpp

@@ -11,49 +11,90 @@ int Render::StreamWindow() {
   ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
   ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0));
   ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0, 0, 0, 0));
-  ImGui::PushStyleColor(ImGuiCol_DockingEmptyBg, ImVec4(0, 0, 0, 0));
   ImGui::Begin("VideoBg", nullptr,
                ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration |
-                   ImGuiWindowFlags_NoBringToFrontOnFocus);
+                   ImGuiWindowFlags_NoBringToFrontOnFocus |
+                   ImGuiWindowFlags_NoDocking);
 
-  ImGuiID dockspace_id = ImGui::GetID("MyDockSpace");
-  ImGui::DockSpace(
-      dockspace_id, ImVec2(stream_window_width_, stream_window_height_),
-      ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_KeepAliveOnly);
-
-  ImGui::PopStyleColor(3);
+  ImGui::PopStyleColor(2);
   ImGui::PopStyleVar();
 
-  for (auto& it : client_properties_) {
-    auto& props = it.second;
+  ImGuiTabBarFlags tab_bar_flags =
+      ImGuiTabBarFlags_Reorderable | ImGuiTabBarFlags_AutoSelectNewTabs;
+  ImGuiWindowFlags stream_window_flag =
+      ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoDecoration |
+      ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoMove;
 
-    // ImGui::SetNextWindowPos(
-    //     ImVec2(0, fullscreen_button_pressed_ ? 0 : title_bar_height_),
-    //     ImGuiCond_Once);
-    ImGui::SetNextWindowSize(
-        ImVec2(stream_window_width_, stream_window_height_), ImGuiCond_Once);
-    ImGui::SetWindowFontScale(0.5f);
-    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
-    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0));
-    ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0, 0, 0, 0));
-    ImGui::Begin(props->remote_id_.c_str(), nullptr,
-                 ImGuiWindowFlags_NoTitleBar);
-    ImGui::PopStyleColor(2);
-    ImGui::PopStyleVar();
-    ImGui::SetWindowFontScale(1.0f);
+  ImGui::SetNextWindowPos(ImVec2(20, 0), ImGuiCond_Always);
+  ImGui::SetNextWindowSize(ImVec2(0, 20), ImGuiCond_Always);
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 8.0f));
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+  ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0.0f));
+  ImGui::Begin("TabBar", nullptr,
+               ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration |
+                   ImGuiWindowFlags_NoBringToFrontOnFocus |
+                   ImGuiWindowFlags_NoDocking);
+  ImGui::PopStyleColor();
+  ImGui::PopStyleVar(2);
+  if (ImGui::BeginTabBar("StreamTabBar", tab_bar_flags)) {
+    if (ImGui::IsWindowHovered()) {
+      is_tab_bar_hovered_ = true;
+    } else {
+      is_tab_bar_hovered_ = false;
+    }
 
-    ImVec2 stream_window_pos = ImGui::GetWindowPos();
-    ImGuiViewport* viewport = ImGui::GetWindowViewport();
-    ImVec2 stream_window_size = ImGui::GetWindowSize();
-    props->render_window_x_ = stream_window_pos.x;
-    props->render_window_y_ = stream_window_pos.y;
-    props->render_window_width_ = stream_window_size.x;
-    props->render_window_height_ = stream_window_size.y;
+    for (auto it = client_properties_.begin(); it != client_properties_.end();
+         ++it) {
+      auto& props = it->second;
 
-    ControlWindow(props);
+      ImGui::SetWindowFontScale(0.6f);
+      if (props->tab_opened_) {
+        if (ImGui::BeginTabItem(props->remote_id_.c_str(), &props->tab_opened_,
+                                ImGuiTabItemFlags_None)) {
+          props->tab_selected_ = true;
+          ImGui::SetWindowFontScale(1.0f);
+          ImGui::SetNextWindowSize(
+              ImVec2(stream_window_width_, stream_window_height_),
+              ImGuiCond_Once);
+          ImGui::SetNextWindowPos(
+              ImVec2(0, fullscreen_button_pressed_ ? 0 : title_bar_height_),
+              ImGuiCond_Appearing);
+          ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
+          ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+          ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0, 0, 0, 0.0f));
+          ImGui::Begin(props->remote_id_.c_str(), nullptr, stream_window_flag);
+          ImGui::PopStyleColor();
+          ImGui::PopStyleVar(2);
 
-    ImGui::End();
+          ImVec2 stream_window_pos = ImGui::GetWindowPos();
+          ImGuiViewport* viewport = ImGui::GetWindowViewport();
+          ImVec2 stream_window_size = ImGui::GetWindowSize();
+          props->render_window_x_ = stream_window_pos.x;
+          props->render_window_y_ = stream_window_pos.y;
+          props->render_window_width_ = stream_window_size.x;
+          props->render_window_height_ = stream_window_size.y;
+
+          ControlWindow(props);
+
+          ImGui::End();
+          ImGui::EndTabItem();
+        } else {
+          props->tab_selected_ = false;
+        }
+      } else {
+        CleanupPeer(it->first, props);
+        it = client_properties_.erase(it);
+        if (client_properties_.empty()) {
+          SDL_Event event;
+          event.type = SDL_QUIT;
+          SDL_PushEvent(&event);
+        }
+      }
+    }
+
+    ImGui::EndTabBar();
   }
+  ImGui::End();
 
   UpdateRenderRect();
 

src/single_window/title_bar.cpp

@@ -1,4 +1,5 @@
 #include "localization.h"
+#include "rd_log.h"
 #include "render.h"
 
 #define BUTTON_PADDING 36.0f