From b37544df17adda5767bba02f7545ebd888e29c29 Mon Sep 17 00:00:00 2001
From: Ignacio Sanchez Gines <863613+drhelius@users.noreply.github.com>
Date: Tue, 30 Jul 2024 20:10:08 +0200
Subject: [PATCH] Menu item to enable multi-viewport

---
 platforms/desktop-shared/config.cpp |  2 ++
 platforms/desktop-shared/config.h   |  1 +
 platforms/desktop-shared/gui.cpp    | 16 ++++++++++++----
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/platforms/desktop-shared/config.cpp b/platforms/desktop-shared/config.cpp
index a4319e6..02724ca 100644
--- a/platforms/desktop-shared/config.cpp
+++ b/platforms/desktop-shared/config.cpp
@@ -160,6 +160,7 @@ void config_read(void)
     config_debug.show_video = read_bool("Debug", "Video", false);
     config_debug.show_video_registers = read_bool("Debug", "VideoRegisters", false);
     config_debug.font_size = read_int("Debug", "FontSize", 0);
+    config_debug.multi_viewport = read_bool("Debug", "MultiViewport", false);
 
     config_emulator.fullscreen = read_bool("Emulator", "FullScreen", false);
     config_emulator.show_menu = read_bool("Emulator", "ShowMenu", true);
@@ -327,6 +328,7 @@ void config_write(void)
     write_bool("Debug", "Video", config_debug.show_video);
     write_bool("Debug", "VideoRegisters", config_debug.show_video_registers);
     write_int("Debug", "FontSize", config_debug.font_size);
+    write_bool("Debug", "MultiViewport", config_debug.multi_viewport);
 
     write_bool("Emulator", "FullScreen", config_emulator.fullscreen);
     write_bool("Emulator", "ShowMenu", config_emulator.show_menu);
diff --git a/platforms/desktop-shared/config.h b/platforms/desktop-shared/config.h
index 44a6d37..7debf35 100644
--- a/platforms/desktop-shared/config.h
+++ b/platforms/desktop-shared/config.h
@@ -144,6 +144,7 @@ struct config_Debug
     bool show_video = false;
     bool show_video_registers = true;
     int font_size = 0;
+    bool multi_viewport = false;
 };
 
 EXTERN mINI::INIFile* config_ini_file;
diff --git a/platforms/desktop-shared/gui.cpp b/platforms/desktop-shared/gui.cpp
index 4a514ed..505d247 100644
--- a/platforms/desktop-shared/gui.cpp
+++ b/platforms/desktop-shared/gui.cpp
@@ -97,10 +97,6 @@ void gui_init(void)
     io.IniFilename = config_imgui_file_path;
     io.FontGlobalScale /= application_display_scale;
 
-#if defined(__APPLE__) || defined(_WIN32)
-    io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
-#endif
-
     gui_roboto_font = io.Fonts->AddFontFromMemoryCompressedTTF(RobotoMedium_compressed_data, RobotoMedium_compressed_size, 17.0f * application_display_scale, NULL, io.Fonts->GetGlyphRangesCyrillic());
 
     ImFontConfig font_cfg;
@@ -899,6 +895,18 @@ static void main_menu(void)
 
             ImGui::Separator();
 
+#if defined(__APPLE__) || defined(_WIN32)
+            if (ImGui::MenuItem("Multi-Viewport", "", &config_debug.multi_viewport, config_debug.debug))
+            {
+                if (config_debug.multi_viewport)
+                    ImGui::GetIO().ConfigFlags &= ~ImGuiConfigFlags_ViewportsEnable;
+                else
+                    ImGui::GetIO().ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
+            }
+
+            ImGui::Separator();
+#endif
+
             if (ImGui::MenuItem("Load Symbols...", "", (void*)0, config_debug.debug))
             {
                 open_symbols = true;