DisplayServer: separate window showing into another function

When creating a window, Godot would first register it to the WM(show it) and then set its flags.
This works fine on a floating WM, but on tiling WMs as soon as a window gets registered
the WM immediately acts on the window by scaling it up and treating it as a generic window,
being registered without any special flags.

This commit separates the showing of the window into another function and calls it after the most important flags are set,
making windows with special flags(eg. all popups) work again on tiling WMs.

Fixes #37930

2 files changed, 11 insertions, 2 deletions

diff --git a/platform/linuxbsd/display_server_x11.cpp b/platform/linuxbsd/display_server_x11.cpp
index 874a3a6392..4aec6d256c 100644
--- a/platform/linuxbsd/display_server_x11.cpp
+++ b/platform/linuxbsd/display_server_x11.cpp
@@ -685,6 +685,14 @@ DisplayServer::WindowID DisplayServerX11::create_sub_window(WindowMode p_mode, u
 	return id;
 }
 
+void DisplayServerX11::show_window(WindowID p_id) {
+	_THREAD_SAFE_METHOD_
+
+	WindowData &wd = windows[p_id];
+
+	XMapWindow(x11_display, wd.x11_window);
+}
+
 void DisplayServerX11::delete_sub_window(WindowID p_id) {
 	_THREAD_SAFE_METHOD_
 
@@ -3218,8 +3226,6 @@ DisplayServerX11::WindowID DisplayServerX11::_create_window(WindowMode p_mode, u
 		WindowData wd;
 		wd.x11_window = XCreateWindow(x11_display, RootWindow(x11_display, visualInfo->screen), p_rect.position.x, p_rect.position.y, p_rect.size.width > 0 ? p_rect.size.width : 1, p_rect.size.height > 0 ? p_rect.size.height : 1, 0, visualInfo->depth, InputOutput, visualInfo->visual, valuemask, &windowAttributes);
 
-		XMapWindow(x11_display, wd.x11_window);
-
 		//associate PID
 		// make PID known to X11
 		{
@@ -3414,6 +3420,7 @@ DisplayServerX11::WindowID DisplayServerX11::_create_window(WindowMode p_mode, u
 	if (cursors[current_cursor] != None) {
 		XDefineCursor(x11_display, wd.x11_window, cursors[current_cursor]);
 	}
+
 	return id;
 }
 
@@ -3653,6 +3660,7 @@ DisplayServerX11::DisplayServerX11(const String &p_rendering_driver, WindowMode
 			window_set_flag(WindowFlags(i), true, main_window);
 		}
 	}
+	show_window(main_window);
 
 //create RenderingDevice if used
 #if defined(VULKAN_ENABLED)
diff --git a/platform/linuxbsd/display_server_x11.h b/platform/linuxbsd/display_server_x11.h
index b5d2ea1c63..0ba1359145 100644
--- a/platform/linuxbsd/display_server_x11.h
+++ b/platform/linuxbsd/display_server_x11.h
@@ -276,6 +276,7 @@ public:
 	virtual Vector<DisplayServer::WindowID> get_window_list() const;
 
 	virtual WindowID create_sub_window(WindowMode p_mode, uint32_t p_flags, const Rect2i &p_rect = Rect2i());
+	virtual void show_window(WindowID p_id);
 	virtual void delete_sub_window(WindowID p_id);
 
 	virtual WindowID get_window_at_screen_position(const Point2i &p_position) const;