[gtk+/gtk-3-22] GtkHeaderBar: Reconsider buttons if any tiling state changes

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8ad40a49ee28928effcbc57cff463e2867564427
Author: Simon McVittie <smcv debian org>
Date:   Thu Oct 26 15:57:29 2017 +0100

    GtkHeaderBar: Reconsider buttons if any tiling state changes
    
    Looking at the 1-bit "tiled or not?" state is not necessarily
    enough.
    
    Signed-off-by: Simon McVittie <smcv debian org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=789357

 gtk/gtkheaderbar.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index 6211f0e..ae85993 100644
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -1931,7 +1931,13 @@ window_state_changed (GtkWidget           *window,
 {
   GtkHeaderBar *bar = GTK_HEADER_BAR (data);
 
-  if (event->changed_mask & (GDK_WINDOW_STATE_FULLSCREEN | GDK_WINDOW_STATE_MAXIMIZED | 
GDK_WINDOW_STATE_TILED))
+  if (event->changed_mask & (GDK_WINDOW_STATE_FULLSCREEN |
+                             GDK_WINDOW_STATE_MAXIMIZED |
+                             GDK_WINDOW_STATE_TILED |
+                             GDK_WINDOW_STATE_TOP_TILED |
+                             GDK_WINDOW_STATE_RIGHT_TILED |
+                             GDK_WINDOW_STATE_BOTTOM_TILED |
+                             GDK_WINDOW_STATE_LEFT_TILED))
     _gtk_header_bar_update_window_buttons (bar);
 
   return FALSE;