[gnome-klotski/arnaudb/wip/gtk4: 38/42] The size-allocate signal is gone.

[Arnaud B. <arnaudb src gnome org>]

commit 2a0d556349e19e237ac12f82c5ea254e5759915b
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Jun 1 22:39:39 2020 +0200

    The size-allocate signal is gone.

 data/ui/klotski.ui      | 1 -
 src/klotski-window.vala | 9 ++-------
 2 files changed, 2 insertions(+), 8 deletions(-)
---
diff --git a/data/ui/klotski.ui b/data/ui/klotski.ui
index 37ec405..96a696e 100644
--- a/data/ui/klotski.ui
+++ b/data/ui/klotski.ui
@@ -314,7 +314,6 @@
     <!-- <initial-focus name=""/> -->
     <property name="width-request">600</property>
     <property name="height-request">400</property>
-    <signal name="size-allocate" handler="on_size_allocate"/>
     <signal name="map" handler="init_state_watcher"/>
     <signal name="destroy" handler="on_destroy"/>
     <child type="titlebar">
diff --git a/src/klotski-window.vala b/src/klotski-window.vala
index a9200f2..23a357c 100644
--- a/src/klotski-window.vala
+++ b/src/klotski-window.vala
@@ -633,12 +633,6 @@ private class KlotskiWindow : ApplicationWindow
     * * Window management callbacks
     \*/
 
-    [GtkCallback]
-    private void on_size_allocate (int width, int height)
-    {
-        update_window_state ();
-    }
-
     [GtkCallback]
     private inline void init_state_watcher ()
     {
@@ -647,6 +641,7 @@ private class KlotskiWindow : ApplicationWindow
             assert_not_reached ();
         surface = (Gdk.Toplevel) (!) nullable_surface;
         surface.notify ["state"].connect (on_window_state_event);
+        surface.size_changed.connect (update_window_state);
     }
 
     private Gdk.Toplevel surface;
@@ -694,7 +689,7 @@ private class KlotskiWindow : ApplicationWindow
     * * manage window state
     \*/
 
-    private void update_window_state () // called on size-allocate
+    private void update_window_state (int width, int height)
     {
         if (window_is_maximized || window_is_tiled || window_is_fullscreen)
             return;