1 files changed, 11 insertions, 4 deletions
diff --git a/src/display/display-forward.h b/src/display/display-forward.h
index d7e7d72ab..7dccb76ef 100644
--- a/src/display/display-forward.h
+++ b/src/display/display-forward.h
@@ -10,23 +10,30 @@ typedef struct _SPCanvasItemClass SPCanvasItemClass;
 struct SPCanvasGroup;
 struct SPCanvasGroupClass;
 class SPCurve;
-
-class NRArena;
+typedef struct _SPCanvasArena SPCanvasArena;
 
 namespace Inkscape {
-class DrawingContext;
-class DrawingSurface;
+class Drawing;
 class DrawingItem;
 class DrawingGroup;
 class DrawingImage;
 class DrawingShape;
 class DrawingGlyphs;
 class DrawingText;
+class UpdateContext;
+
+class DrawingContext;
+class DrawingSurface;
+class DrawingCache;
 
 namespace Display {
     class TemporaryItem;
     class TemporaryItemList;
 }
+
+namespace Filters {
+    class Filter;
+}
 }
 
 #endif /* !SEEN_DISPLAY_DISPLAY_FORWARD_H */