[gtk/wip/chergert/for-main] macos: make transient-for key window when hiding surface

[Christian Hergert <chergert src gnome org>]

commit 84014e3414b5eb35e16a2a993472bfd391fe7ee1
Author: Christian Hergert <christian hergert me>
Date:   Thu Mar 10 08:04:14 2022 -0800

    macos: make transient-for key window when hiding surface
    
    This only handled the popover case before and not the transient-for case.

 gdk/macos/gdkmacossurface.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/gdk/macos/gdkmacossurface.c b/gdk/macos/gdkmacossurface.c
index f6140deafa..168cdc4e67 100644
--- a/gdk/macos/gdkmacossurface.c
+++ b/gdk/macos/gdkmacossurface.c
@@ -219,10 +219,17 @@ gdk_macos_surface_hide (GdkSurface *surface)
 
   if (was_key)
     {
+      GdkSurface *parent;
+
+      if (GDK_IS_TOPLEVEL (surface))
+        parent = surface->transient_for;
+      else
+        parent = surface->parent;
+
       /* Return key input to the parent window if necessary */
-      if (surface->parent != NULL && GDK_SURFACE_IS_MAPPED (surface->parent))
+      if (parent != NULL && GDK_SURFACE_IS_MAPPED (parent))
         {
-          GdkMacosWindow *parentWindow = GDK_MACOS_SURFACE (surface->parent)->window;
+          GdkMacosWindow *parentWindow = GDK_MACOS_SURFACE (parent)->window;
 
           [parentWindow showAndMakeKey:YES];
         }