[gnome-control-center] CcPanel: derive from GtkBin, rather than GtkAlignment

[Thomas Wood <thos src gnome org>]

commit 3d9ada13f0e771ad8a4faf42b6c3f8779d94484f
Author: Thomas Wood <thomas wood intel com>
Date:   Tue Jul 6 14:13:26 2010 +0100

    CcPanel: derive from GtkBin, rather than GtkAlignment
    
    CcPanel does not require any features of GtkAlignment, so derive from
    GtkBin directly.

 libgnome-control-center/cc-panel.c |   47 +++++++++++++++++++++++++++++++++++-
 libgnome-control-center/cc-panel.h |    4 +-
 2 files changed, 48 insertions(+), 3 deletions(-)
---
diff --git a/libgnome-control-center/cc-panel.c b/libgnome-control-center/cc-panel.c
index c26a6f8..d93f18c 100644
--- a/libgnome-control-center/cc-panel.c
+++ b/libgnome-control-center/cc-panel.c
@@ -60,7 +60,7 @@ enum
     PROP_SHELL,
 };
 
-G_DEFINE_ABSTRACT_TYPE (CcPanel, cc_panel, GTK_TYPE_ALIGNMENT)
+G_DEFINE_ABSTRACT_TYPE (CcPanel, cc_panel, GTK_TYPE_BIN)
 
 static void
 cc_panel_set_property (GObject      *object,
@@ -123,17 +123,62 @@ cc_panel_finalize (GObject *object)
   G_OBJECT_CLASS (cc_panel_parent_class)->finalize (object);
 }
 
+static void
+cc_panel_size_request (GtkWidget      *widget,
+                       GtkRequisition *requisition)
+{
+  GtkBin *bin = GTK_BIN (widget);
+  GtkWidget *child;
+  guint border_width;
+
+  if ((child = gtk_bin_get_child (bin)))
+    {
+      GtkRequisition child_requisition;
+
+      gtk_widget_size_request (child, &child_requisition);
+
+      requisition->width = child_requisition.width;
+      requisition->height = child_requisition.height;
+    }
+
+  border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
+  requisition->width += 2 * border_width;
+  requisition->height += 2 * border_width;
+}
+
+static void
+cc_panel_size_allocate (GtkWidget     *widget,
+                             GtkAllocation *allocation)
+{
+  GtkAllocation child_allocation;
+  guint border_width;
+
+  child_allocation = *allocation;
+
+  border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
+
+
+  child_allocation.width -= 2 * border_width;
+  child_allocation.height -= 2 * border_width;
+
+  gtk_widget_size_allocate (gtk_bin_get_child (GTK_BIN (widget)),
+                            &child_allocation);
+}
 
 static void
 cc_panel_class_init (CcPanelClass *klass)
 {
   GParamSpec      *pspec;
   GObjectClass    *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass  *widget_class = GTK_WIDGET_CLASS (klass);
 
   object_class->get_property = cc_panel_get_property;
   object_class->set_property = cc_panel_set_property;
   object_class->finalize = cc_panel_finalize;
 
+  widget_class->size_request = cc_panel_size_request;
+  widget_class->size_allocate = cc_panel_size_allocate;
+
   g_type_class_add_private (klass, sizeof (CcPanelPrivate));
 
   pspec = g_param_spec_object ("shell",
diff --git a/libgnome-control-center/cc-panel.h b/libgnome-control-center/cc-panel.h
index 1451d3a..b2f9ca8 100644
--- a/libgnome-control-center/cc-panel.h
+++ b/libgnome-control-center/cc-panel.h
@@ -54,7 +54,7 @@ typedef struct _CcPanelClass  CcPanelClass;
 struct _CcPanel
 {
   /*< private >*/
-  GtkAlignment    parent;
+  GtkBin          parent;
   CcPanelPrivate *priv;
 };
 /**
@@ -65,7 +65,7 @@ struct _CcPanel
 struct _CcPanelClass
 {
   /*< private >*/
-  GtkAlignmentClass   parent_class;
+  GtkBinClass parent_class;
 };
 
 GType        cc_panel_get_type         (void);