Implement a transient_to_focused mode

This intends to be the correct way to handle non-child windows becoming covered by the current window when becoming focused.
Enabling this property on select windows, they will become transient to the currently focused one when becoming visible.

This deprecates the "unparent_when_invisible" function introduced by #76025.

2 files changed, 7 insertions, 0 deletions

diff --git a/platform/linuxbsd/x11/display_server_x11.cpp b/platform/linuxbsd/x11/display_server_x11.cpp
index 1434342bbc..c72a203c4a 100644
--- a/platform/linuxbsd/x11/display_server_x11.cpp
+++ b/platform/linuxbsd/x11/display_server_x11.cpp
@@ -2891,10 +2891,15 @@ void DisplayServerX11::window_move_to_foreground(WindowID p_window) {
 	XFlush(x11_display);
 }
 
+DisplayServerX11::WindowID DisplayServerX11::get_focused_window() const {
+	return last_focused_window;
+}
+
 bool DisplayServerX11::window_is_focused(WindowID p_window) const {
 	_THREAD_SAFE_METHOD_
 
 	ERR_FAIL_COND_V(!windows.has(p_window), false);
+
 	const WindowData &wd = windows[p_window];
 
 	return wd.focused;
diff --git a/platform/linuxbsd/x11/display_server_x11.h b/platform/linuxbsd/x11/display_server_x11.h
index ac2c7843f6..378d8bb407 100644
--- a/platform/linuxbsd/x11/display_server_x11.h
+++ b/platform/linuxbsd/x11/display_server_x11.h
@@ -491,6 +491,8 @@ public:
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
+	virtual WindowID get_focused_window() const override;
+
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool can_any_window_draw() const override;