Bug 205938 Cross Tab: 2.2.9 Measures from a cube can be dragged and dropped to left and not to right.
If user wants to show an existing measure on a cross tab that he has defined in a cube, he can only add it to the left and not to the right of an existing measure. Proposed solution User should be ale to add a measure both to the left and right of an existing measure.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editpolicies/ReportFlowLayoutEditPolicy.java
direction == PositionConstants.WEST )
		{
			size.height = -1;
		}
		else if ( direction == PositionConstants.SOUTH ||
				direction == PositionConstants.NORTH )
		{
			size.width = -1;
		}
		command.setSize( size );
		return command;
	}
	/**
	 * Generates a draw2d constraint object derived from the specified child
	 * EditPart using the provided Request. The returned constraint will be
	 * translated to the application's model later using
	 * {@link #translateToModelConstraint(Object)}.
	 * 
	 * @param request
	 *            the ChangeBoundsRequest
	 * @param child
	 *            the child EditPart for which the constraint should be
	 *            generated
	 * @return the draw2d constraint
	 */
	protected Object getConstraintFor( ChangeBoundsRequest request,
			GraphicalEditPart child )
	{
		Rectangle rect = child.getFigure( ).getBounds( );
		rect = request.getTransformedRectangle( rect );