--- a/doodle/dia/grid_layer.d	Sun Aug 08 21:56:54 2010 +0930
+++ b/doodle/dia/grid_layer.d	Sun Aug 08 22:01:54 2010 +0930
@@ -17,7 +17,7 @@
     }
 }
 
-class GridLayer : Layer, Grid {
+class GridLayer : Layer, IGrid {
     static const double MIN_SPACING = 5.0;      // pixels
 
     this(in string name) {
@@ -32,7 +32,7 @@
         return Rectangle();
     }
 
-    override void draw(in Viewport viewport,
+    override void draw(in IViewport viewport,
                        in Rectangle pixelDamage, scope Context pixelCr,
                        in Rectangle modelDamage, scope Context modelCr) const {
         assert(_zoomValid);
@@ -89,7 +89,7 @@
         } modelCr.restore();
     }
 
-    // Grid overrides:
+    // IGrid overrides:
 
     override void zoomChanged(double zoom) {
         _zoom = zoom;