X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=blobdiff_plain;f=source%2Fwidget.h;h=dfef4ba7128be3b1a3e099addc5b7720a943ad8e;hp=5c81b8056e6f409641095b2303513a95eff4d3ae;hb=e6a6b3fbd760e487c5df1a6d70ed0700d151710b;hpb=ec879cd7dba36a3f40a9faed27782de1495a00ed

diff --git a/source/widget.h b/source/widget.h
index 5c81b80..dfef4ba 100644
--- a/source/widget.h
+++ b/source/widget.h
@@ -68,6 +68,8 @@ public:
 	void set_geometry(const Geometry &);
 	const Geometry &get_geometry() const { return geom; }
 
+	void map_coords_to_ancestor(int &, int &, const Widget &) const;
+
 protected:
 	/** Sets the widget's parent Container.  The widget must be unparented when
 	calling this function with a non-null parameter. */
@@ -75,6 +77,16 @@ protected:
 public:
 	Container *get_parent() const { return parent; }
 
+	/** Finds the closest ancestor of a specific type. */
+	template<typename T>
+	T *find_ancestor() const
+	{
+		for(Widget *w=parent; w; w=w->get_parent())
+			if(T *tw = dynamic_cast<T *>(w))
+				return tw;
+		return 0;
+	}
+
 	/** Sets the widget style.  The name of the resource to be looked up is
 	constructed by concatenating the widget class and the style name with a
 	dash. */