From 169e2d8d92f2c1b02e68eb215bba66e9ef0a4990 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Tue, 28 Feb 2017 17:07:55 -0500
Subject: [PATCH] quartz: Let CSD windows be fullscreen

I've found that I need this patch to make it possible for
windows with headerbar to be made fullscreen on OS X.

https://bugzilla.gnome.org/show_bug.cgi?id=779383
---
 gdk/quartz/gdkwindow-quartz.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 515a779aec..5f3efd8011 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -2272,7 +2272,10 @@ gdk_quartz_window_set_decorations (GdkWindow       *window,
         }
 
       if (new_mask == NSBorderlessWindowMask)
-        [impl->toplevel setContentSize:rect.size];
+        {
+          [impl->toplevel setContentSize:rect.size];
+          [impl->toplevel setCollectionBehavior:NSWindowCollectionBehaviorFullScreenPrimary];
+        }
       else
         [impl->toplevel setFrame:rect display:YES];