[nautilus] canvas-container: listen to scale factor to invalidate icons

[Lionel Landwerlin <llandwerlin src gnome org>]

commit b257699e6f9b753486e464444e9fa446afe2fa2b
Author: Lionel Landwerlin <lionel g landwerlin intel com>
Date:   Fri Jan 6 15:51:08 2017 +0000

    canvas-container: listen to scale factor to invalidate icons
    
    This is one of the condition that needs to trigger an invalidation to
    recompute layout at the correct size.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776896

 src/nautilus-canvas-container.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-canvas-container.c b/src/nautilus-canvas-container.c
index e15630e..7f95ba1 100644
--- a/src/nautilus-canvas-container.c
+++ b/src/nautilus-canvas-container.c
@@ -5749,6 +5749,16 @@ handle_focus_out_event (GtkWidget     *widget,
     return FALSE;
 }
 
+static void
+handle_scale_factor_changed (GObject    *object,
+                             GParamSpec *pspec,
+                             gpointer    user_data)
+{
+    nautilus_canvas_container_request_update_all_internal (NAUTILUS_CANVAS_CONTAINER (object),
+                                                           TRUE);
+}
+
+
 
 static int text_ellipsis_limits[NAUTILUS_CANVAS_ZOOM_LEVEL_N_ENTRIES];
 static int desktop_text_ellipsis_limit;
@@ -5861,6 +5871,9 @@ nautilus_canvas_container_init (NautilusCanvasContainer *container)
     g_signal_connect (container, "focus-out-event",
                       G_CALLBACK (handle_focus_out_event), NULL);
 
+    g_signal_connect (container, "notify::scale-factor",
+                      G_CALLBACK (handle_scale_factor_changed), NULL);
+
     if (!setup_prefs)
     {
         g_signal_connect_swapped (nautilus_icon_view_preferences,