gtk4: implement GtkPaintable::get_flags

Change-Id: Iaa8071a37d583c4a16632e3f8e98a7bf50709991
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124877
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/vcl/unx/gtk4/surfacepaintable.cxx b/vcl/unx/gtk4/surfacepaintable.cxx
index 052b2fbacdef..2e8aa98b26a0 100644
--- a/vcl/unx/gtk4/surfacepaintable.cxx
+++ b/vcl/unx/gtk4/surfacepaintable.cxx
@@ -36,6 +36,12 @@ static void surface_paintable_snapshot(GdkPaintable* paintable, GdkSnapshot* sna
     cairo_destroy(cr);
 }
 
+static GdkPaintableFlags surface_paintable_get_flags(GdkPaintable* /*paintable*/)
+{
+    return static_cast<GdkPaintableFlags>(GDK_PAINTABLE_STATIC_SIZE
+                                          | GDK_PAINTABLE_STATIC_CONTENTS);
+}
+
 static int surface_paintable_get_intrinsic_width(GdkPaintable* paintable)
 {
     SurfacePaintable* self = SURFACE_PAINTABLE(paintable);
@@ -51,6 +57,7 @@ static int surface_paintable_get_intrinsic_height(GdkPaintable* paintable)
 static void surface_paintable_init_interface(GdkPaintableInterface* iface)
 {
     iface->snapshot = surface_paintable_snapshot;
+    iface->get_flags = surface_paintable_get_flags;
     iface->get_intrinsic_width = surface_paintable_get_intrinsic_width;
     iface->get_intrinsic_height = surface_paintable_get_intrinsic_height;
 }