Element editor: changed the way scaling operations get rounded.

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2058 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/editor/partpolygon.cpp

@@ -190,6 +190,17 @@ void PartPolygon::handleUserTransformation(const QRectF &initial_selection_rect,
 	setPolygon(mapFromScene(QPolygonF(mapped_points.toVector())));
 }
 
+/**
+	@reimp CustomElementPart::preferredScalingMethod
+	This method is called by the decorator when it needs to determine the best
+	way to interactively scale a primitive. It is typically called when only a
+	single primitive is being scaled.
+	This reimplementation systematically returns QET::RoundScaleRatios.
+*/
+QET::ScalingMethod PartPolygon::preferredScalingMethod() const {
+	return(QET::RoundScaleRatios);
+}
+
 /**
 	@return le rectangle delimitant cette partie.
 */