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, 10 insertions, 7 deletions

diff --git a/platform/windows/display_server_windows.cpp b/platform/windows/display_server_windows.cpp
index 6ee9b6d698..da2fc1c2c1 100644
--- a/platform/windows/display_server_windows.cpp
+++ b/platform/windows/display_server_windows.cpp
@@ -495,13 +495,17 @@ DisplayServer::WindowID DisplayServerWindows::create_sub_window(WindowMode p_mod
 
 	_update_window_style(window_id);
 
-	ShowWindow(wd.hWnd, (p_flags & WINDOW_FLAG_NO_FOCUS_BIT) ? SW_SHOWNOACTIVATE : SW_SHOW); // Show The Window
-	if (!(p_flags & WINDOW_FLAG_NO_FOCUS_BIT)) {
+	return window_id;
+}
+
+void DisplayServerWindows::show_window(WindowID p_id) {
+	WindowData &wd = windows[p_id];
+
+	ShowWindow(wd.hWnd, wd.no_focus ? SW_SHOWNOACTIVATE : SW_SHOW); // Show The Window
+	if (!wd.no_focus) {
 		SetForegroundWindow(wd.hWnd); // Slightly Higher Priority
 		SetFocus(wd.hWnd); // Sets Keyboard Focus To
 	}
-
-	return window_id;
 }
 
 void DisplayServerWindows::delete_sub_window(WindowID p_window) {
@@ -3121,9 +3125,7 @@ DisplayServerWindows::DisplayServerWindows(const String &p_rendering_driver, Win
 		}
 	}
 
-	ShowWindow(windows[MAIN_WINDOW_ID].hWnd, SW_SHOW); // Show The Window
-	SetForegroundWindow(windows[MAIN_WINDOW_ID].hWnd); // Slightly Higher Priority
-	SetFocus(windows[MAIN_WINDOW_ID].hWnd); // Sets Keyboard Focus To
+	show_window(MAIN_WINDOW_ID);
 
 #if defined(VULKAN_ENABLED)
 
diff --git a/platform/windows/display_server_windows.h b/platform/windows/display_server_windows.h
index 725f9697c5..7bd93a7086 100644
--- a/platform/windows/display_server_windows.h
+++ b/platform/windows/display_server_windows.h
@@ -460,6 +460,7 @@ 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_window);
 	virtual void delete_sub_window(WindowID p_window);
 
 	virtual WindowID get_window_at_screen_position(const Point2i &p_position) const;