[gnome-panel] update background when PanelAppletFrame size changes

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 144f249402f8b18430ddbc2e6b51d329fab18d48
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Nov 21 05:20:24 2014 +0200

    update background when PanelAppletFrame size changes
    
    When PanelAppletFrame changes size update applets background. This
    is possible fix for bug:
    https://bugzilla.gnome.org/show_bug.cgi?id=500999

 gnome-panel/panel-applet-frame.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/gnome-panel/panel-applet-frame.c b/gnome-panel/panel-applet-frame.c
index cc76e8a..948d77c 100644
--- a/gnome-panel/panel-applet-frame.c
+++ b/gnome-panel/panel-applet-frame.c
@@ -221,6 +221,25 @@ panel_applet_frame_get_preferred_height(GtkWidget *widget, gint *minimal_height,
 }
 
 static void
+change_background (PanelAppletFrame *frame,
+                   GtkAllocation    *old,
+                   GtkAllocation    *new)
+{
+       PanelBackgroundType type;
+
+       if (old->x == new->x &&
+           old->y == new->y &&
+           old->width == new->width &&
+           old->height == new->height)
+               return;
+
+       type = frame->priv->panel->background.type;
+
+       PANEL_APPLET_FRAME_GET_CLASS (frame)->change_background (frame,
+                                                                type);
+}
+
+static void
 panel_applet_frame_size_allocate (GtkWidget     *widget,
                                  GtkAllocation *allocation)
 {
@@ -239,10 +258,12 @@ panel_applet_frame_size_allocate (GtkWidget     *widget,
        if (!frame->priv->has_handle) {
                GTK_WIDGET_CLASS (panel_applet_frame_parent_class)->size_allocate (widget,
                                                                                   allocation);
+               change_background (frame, &widget_allocation, allocation);
                return;
        }
 
        gtk_widget_set_allocation (widget, allocation);
+       change_background (frame, &widget_allocation, allocation);
 
        frame->priv->handle_rect.x = 0;
        frame->priv->handle_rect.y = 0;