+ void set_layout_v_offset(int v_offset);
+
+ /**
+ * Gets the vertical visual offset of this signal.
+ */
+ int visual_v_offset() const;
+
+ /**
+ * Sets the vertical visual offset of this signal.
+ */
+ void set_visual_v_offset(int v_offset);
+
+ /**
+ * Sets the visual and layout offset of this signal.
+ */
+ void force_to_v_offset(int v_offset);