Fix updating for ellipses when viewbox is not defined

diff --git a/src/sp-ellipse.cpp b/src/sp-ellipse.cpp
index 88fc59f17d12543bcb1fbe8b73d7df16aadd4b7d..dbc5b140799ce709860cbc851105b0a46b199c66 100644 (file)
--- a/src/sp-ellipse.cpp
+++ b/src/sp-ellipse.cpp
@@ -144,16 +144,18 @@ sp_genericellipse_update(SPObject *object, SPCtx *ctx, guint flags)
         SPGenericEllipse *ellipse = (SPGenericEllipse *) object;
         SPStyle const *style = object->style;
         Geom::OptRect viewbox = ((SPItemCtx const *) ctx)->vp;
-        double const dx = viewbox->width();
-        double const dy = viewbox->height();
-        double const dr = sqrt(dx*dx + dy*dy)/sqrt(2);
-        double const em = style->font_size.computed;
-        double const ex = em * 0.5; // fixme: get from pango or libnrtype
-        ellipse->cx.update(em, ex, dx);
-        ellipse->cy.update(em, ex, dy);
-        ellipse->rx.update(em, ex, dr);
-        ellipse->ry.update(em, ex, dr);
-        sp_shape_set_shape((SPShape *) object);
+        if (viewbox) {
+            double const dx = viewbox->width();
+            double const dy = viewbox->height();
+            double const dr = sqrt(dx*dx + dy*dy)/sqrt(2);
+            double const em = style->font_size.computed;
+            double const ex = em * 0.5; // fixme: get from pango or libnrtype
+            ellipse->cx.update(em, ex, dx);
+            ellipse->cy.update(em, ex, dy);
+            ellipse->rx.update(em, ex, dr);
+            ellipse->ry.update(em, ex, dr);
+            sp_shape_set_shape((SPShape *) object);
+        }
     }
 
     if (((SPObjectClass *) ge_parent_class)->update)