2 files changed, 25 insertions, 9 deletions
diff --git a/libs/gtkmm2ext/cairo_packer.cc b/libs/gtkmm2ext/cairo_packer.cc
index 71f35fcf36..2f7b46f47d 100644
--- a/libs/gtkmm2ext/cairo_packer.cc
+++ b/libs/gtkmm2ext/cairo_packer.cc
@@ -65,6 +65,13 @@ CairoHPacker::on_expose_event (GdkEventExpose* ev)
 	return HBox::on_expose_event (ev);
 }
 
+void
+CairoHPacker::on_size_allocate (Gtk::Allocation& alloc)
+{
+	get_parent()->queue_draw();
+	HBox::on_size_allocate (alloc);
+}
+
 CairoVPacker::CairoVPacker ()
 {
 }
@@ -83,6 +90,13 @@ CairoVPacker::on_realize ()
 	CairoWidget::provide_background_for_cairo_widget (*this, get_bg());
 }
 
+void
+CairoVPacker::on_size_allocate (Gtk::Allocation& alloc)
+{
+	get_parent()->queue_draw();
+	VBox::on_size_allocate (alloc);
+}
+
 Gdk::Color
 CairoVPacker::get_bg () const
 {
diff --git a/libs/gtkmm2ext/gtkmm2ext/cairo_packer.h b/libs/gtkmm2ext/gtkmm2ext/cairo_packer.h
index 74f61308a7..9a7cbcb700 100644
--- a/libs/gtkmm2ext/gtkmm2ext/cairo_packer.h
+++ b/libs/gtkmm2ext/gtkmm2ext/cairo_packer.h
@@ -7,38 +7,40 @@
 
 class LIBGTKMM2EXT_API CairoPacker
 {
-  public:
+public:
 	CairoPacker () {}
 	virtual ~CairoPacker () {}
 
-        virtual Gdk::Color get_bg () const = 0;
+	virtual Gdk::Color get_bg () const = 0;
 
-  protected:
+protected:
 	virtual void draw_background (Gtk::Widget&, GdkEventExpose*);
 };
 
 class LIBGTKMM2EXT_API CairoHPacker : public CairoPacker, public Gtk::HBox
 {
-  public:
+public:
 	CairoHPacker ();
 	~CairoHPacker() {}
 
-        Gdk::Color get_bg () const;
+	Gdk::Color get_bg () const;
 
 	bool on_expose_event (GdkEventExpose*);
-        void on_realize ();
+	void on_realize ();
+	void on_size_allocate (Gtk::Allocation& alloc);
 };
 
 class LIBGTKMM2EXT_API CairoVPacker : public CairoPacker, public Gtk::VBox
 {
-  public:
+public:
 	CairoVPacker ();
 	~CairoVPacker () {}
 
-        Gdk::Color get_bg () const;
+	Gdk::Color get_bg () const;
 
 	bool on_expose_event (GdkEventExpose*);
-        void on_realize ();
+	void on_realize ();
+	void on_size_allocate (Gtk::Allocation& alloc);
 };
 
 #endif /* __gtkmm2ext_cairo_packer_h__ */