+#define TOOL_VERTICAL_MUTE_GAP \
+ ((TOOL_DEFAULT_BAR_HEIGHT - TOOL_DEFAULT_TBUTTON_HEIGHT) / 2)
+
+static HildonVolumebarClass* parent_class;
+
+static void
+hildon_hvolumebar_class_init (HildonHVolumebarClass *klass);
+
+static void
+hildon_hvolumebar_init (HildonHVolumebar *hvolumebar);
+
+static gboolean
+hildon_hvolumebar_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static void
+hildon_hvolumebar_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void
+hildon_hvolumebar_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void
+hildon_hvolumebar_map (GtkWidget *widget);
+
+/**
+ * hildon_hvolumebar_get_type:
+ *
+ * Returns GType for HildonHVolumebar.
+ *
+ * Returns: HildonHVolumebar type
+ */
+GType G_GNUC_CONST
+hildon_hvolumebar_get_type (void)