[gtk/wip/chergert/for-4-6: 49/56] macos: request layout with server-side decoration

[Christian Hergert <chergert src gnome org>]

commit d62313e75ce528cadbea00b148e35d7e62dfef61
Author: Christian Hergert <christian hergert me>
Date:   Thu Mar 10 23:16:38 2022 -0800

    macos: request layout with server-side decoration
    
    If we have server-side decorations we might need to request a layout in
    response to the resize notification. We don't need to do this in other
    cases because we already handle that in the process of doing the resize
    (and that code is that way because of delayed delivery of NSNotification).

 gdk/macos/GdkMacosWindow.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index 7aee71f630..c93be7f49e 100644
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -379,8 +379,15 @@ typedef NSString *CALayerContentsGravity;
 
 -(void)windowDidResize:(NSNotification *)notification
 {
-  _gdk_macos_surface_configure ([self gdkSurface]);
-  gdk_surface_request_layout (GDK_SURFACE (gdk_surface));
+  _gdk_macos_surface_configure (gdk_surface);
+
+  /* If we're using server-side decorations, this notification is coming
+   * in from a display-side change. We need to request a layout in
+   * addition to the configure event.
+   */
+  if (GDK_IS_MACOS_TOPLEVEL_SURFACE (gdk_surface) &&
+      GDK_MACOS_TOPLEVEL_SURFACE (gdk_surface)->decorated)
+    gdk_surface_request_layout (GDK_SURFACE (gdk_surface));
 }
 
 /* Used by gdkmacosdisplay-translate.c to decide if our sendEvent() handler