From f46c40535170397750940d8352e2bf20143e91d4 Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Tue, 5 Nov 2019 00:40:17 +0100
Subject: [PATCH] widget: Add a hook for resizes

It's private, no APIs, we don't talk about it. But we will start using
it very soon, so we can do size request caching in columns and avoid
sizegroups...
---
 gtk/gtkwidget.c        | 3 +++
 gtk/gtkwidgetprivate.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 21587a511d..39d2e60e50 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -4110,6 +4110,9 @@ gtk_widget_queue_resize_internal (GtkWidget *widget)
   priv->resize_needed = TRUE;
   gtk_widget_set_alloc_needed (widget);
 
+  if (priv->resize_func)
+    priv->resize_func (widget);
+
   groups = _gtk_widget_get_sizegroups (widget);
 
   for (l = groups; l; l = l->next)
diff --git a/gtk/gtkwidgetprivate.h b/gtk/gtkwidgetprivate.h
index 68595f7aa9..ff602ee5e9 100644
--- a/gtk/gtkwidgetprivate.h
+++ b/gtk/gtkwidgetprivate.h
@@ -122,6 +122,7 @@ struct _GtkWidgetPrivate
 
   int width_request;
   int height_request;
+  void (* resize_func) (GtkWidget *);
   GtkBorder margin;
 
   /* Animations and other things to update on clock ticks */