--- a/tk/geometry.d	Mon Jul 13 16:16:17 2009 +0930
+++ b/tk/geometry.d	Mon Jul 13 16:46:21 2009 +0930
@@ -198,6 +198,15 @@
         return Rectangle(new_position, _size);
     }
 
+    void get_quantised(out int x, out int y, out int w, out int h) const {
+        x = cast(int)floor(_position.x);
+        y = cast(int)floor(_position.y);
+        w = cast(int)ceil(_position.x + _size.x) - x;
+        h = cast(int)ceil(_position.y + _size.y) - y;
+    }
+
+    //
+
     Point centre() const {
         return _position + _size / 2.0;
     }