[gnome-flashback] libdesktop-background: don't use custom signal

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 11e4909f8f06cf9742f4230decdddc1698fc5d02
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Sep 27 02:16:19 2014 +0300

    libdesktop-background: don't use custom signal

 .../libdesktop-background/desktop-background.c     |   23 +++++++-------
 .../libdesktop-background/desktop-window.c         |   31 --------------------
 2 files changed, 12 insertions(+), 42 deletions(-)
---
diff --git a/gnome-flashback/libdesktop-background/desktop-background.c 
b/gnome-flashback/libdesktop-background/desktop-background.c
index 9583f2b..6bdd94d 100644
--- a/gnome-flashback/libdesktop-background/desktop-background.c
+++ b/gnome-flashback/libdesktop-background/desktop-background.c
@@ -386,6 +386,16 @@ desktop_background_change_event (GSettings *settings,
 }
 
 static void
+size_allocate (GtkWidget     *widget,
+               GtkAllocation *allocation,
+               gpointer       user_data)
+{
+       DesktopBackground *background = DESKTOP_BACKGROUND (user_data);
+
+       queue_background_change (user_data);
+}
+
+static void
 desktop_background_finalize (GObject *object)
 {
        DesktopBackground        *background;
@@ -413,15 +423,6 @@ desktop_background_finalize (GObject *object)
 }
 
 static void
-desktop_background_update (DesktopWindow *window,
-                           gpointer       user_data)
-{
-       DesktopBackground *background = DESKTOP_BACKGROUND (user_data);
-
-       queue_background_change (user_data);
-}
-
-static void
 desktop_background_init (DesktopBackground *background)
 {
        DesktopBackgroundPrivate *priv;
@@ -443,8 +444,8 @@ desktop_background_init (DesktopBackground *background)
                          G_CALLBACK (desktop_background_change_event), background);
 
        priv->background = desktop_window_new ();
-       g_signal_connect (priv->background, "update",
-                         G_CALLBACK (desktop_background_update), background);
+       g_signal_connect (priv->background, "size-allocate",
+                         G_CALLBACK (size_allocate), background);
 
        queue_background_change (background);
 
diff --git a/gnome-flashback/libdesktop-background/desktop-window.c 
b/gnome-flashback/libdesktop-background/desktop-window.c
index 41a01a5..b9fe495 100644
--- a/gnome-flashback/libdesktop-background/desktop-window.c
+++ b/gnome-flashback/libdesktop-background/desktop-window.c
@@ -26,13 +26,6 @@ struct _DesktopWindowPrivate {
 
 G_DEFINE_TYPE_WITH_PRIVATE (DesktopWindow, desktop_window, GTK_TYPE_WINDOW);
 
-enum {
-       UPDATE_SIGNAL,
-       LAST_SIGNAL
-};
-
-static guint signals [LAST_SIGNAL] = { 0 };
-
 static void
 desktop_window_screen_changed (GdkScreen *screen,
                                gpointer   user_data)
@@ -49,8 +42,6 @@ desktop_window_screen_changed (GdkScreen *screen,
                      "width-request", width,
                      "height-request", height,
                      NULL);
-
-       g_signal_emit (window, signals [UPDATE_SIGNAL], 0);
 }
 
 static void
@@ -129,16 +120,6 @@ desktop_window_init (DesktopWindow *window)
 }
 
 static void
-desktop_window_style_updated (GtkWidget *widget)
-{
-       DesktopWindow *window = DESKTOP_WINDOW (widget);
-
-       GTK_WIDGET_CLASS (desktop_window_parent_class)->style_updated (widget);
-
-       g_signal_emit (window, signals [UPDATE_SIGNAL], 0);
-}
-
-static void
 desktop_window_class_init (DesktopWindowClass *class)
 {
        GObjectClass   *object_class;
@@ -152,18 +133,6 @@ desktop_window_class_init (DesktopWindowClass *class)
        widget_class->realize = desktop_window_relaize;
        widget_class->unrealize = desktop_window_unrelaize;
        widget_class->map = desktop_window_map;
-       widget_class->style_updated = desktop_window_style_updated;
-
-       signals [UPDATE_SIGNAL] =
-               g_signal_new ("update",
-                             G_TYPE_FROM_CLASS (object_class),
-                             G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
-                             0,
-                             NULL,
-                             NULL,
-                             g_cclosure_marshal_VOID__VOID,
-                             G_TYPE_NONE,
-                             0);
 }
 
 GtkWidget *