[gtk/wip/matthiasc/popup5: 139/145] broadway: Disconnect from the frame clock

[Matthias Clasen <matthiasc src gnome org>]

commit 6b7f183edf720d86a00e3e8da9d83bb3762ce4a0
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 24 01:55:23 2019 +0000

    broadway: Disconnect from the frame clock
    
    The frame clock can no survive its surface,
    so we need to disconnect signal handlers.

 gdk/broadway/gdksurface-broadway.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
---
diff --git a/gdk/broadway/gdksurface-broadway.c b/gdk/broadway/gdksurface-broadway.c
index d8a0ffb44c..a0dbc3036b 100644
--- a/gdk/broadway/gdksurface-broadway.c
+++ b/gdk/broadway/gdksurface-broadway.c
@@ -184,6 +184,17 @@ connect_frame_clock (GdkSurface *surface)
                     G_CALLBACK (on_frame_clock_after_paint), surface);
 }
 
+static void
+disconnect_frame_clock (GdkSurface *surface)
+{
+  GdkFrameClock *frame_clock = gdk_surface_get_frame_clock (surface);
+
+  g_signal_handlers_disconnect_by_func (frame_clock,
+                                        on_frame_clock_before_paint, surface);
+  g_signal_handlers_disconnect_by_func (frame_clock,
+                                        on_frame_clock_after_paint, surface);
+}
+
 GdkSurface *
 _gdk_broadway_display_create_surface (GdkDisplay     *display,
                                       GdkSurfaceType  surface_type,
@@ -254,6 +265,8 @@ _gdk_broadway_surface_destroy (GdkSurface *surface,
 
   impl = GDK_BROADWAY_SURFACE (surface);
 
+  disconnect_frame_clock (surface);
+
   if (impl->node_data)
     g_array_unref (impl->node_data);
   if (impl->node_data_textures)