private void MeasureChildren(out double height, out double width) { height = 0; width = 0; Point pt = new Point(0, 0); bool isOutmostPanel = this.IsOutmostPanel(); foreach (UIElement child in Children) { Connector connectorChild = child as Connector; if (connectorChild != null && isOutmostPanel) { pt = new Point(0, 0); if (measureConnectors) { Point srcPoint = FreeFormPanel.GetLocationRelativeToOutmostPanel(FreeFormPanel.GetSourceConnectionPoint(connectorChild)); Point destPoint = FreeFormPanel.GetLocationRelativeToOutmostPanel(FreeFormPanel.GetDestinationConnectionPoint(connectorChild)); if (connectorChild.Points.Count == 0 || !this.Disabled && ((DesignerGeometryHelper.ManhattanDistanceBetweenPoints(connectorChild.Points[0], srcPoint) > ConnectorRouter.EndPointTolerance) || (DesignerGeometryHelper.ManhattanDistanceBetweenPoints(connectorChild.Points[connectorChild.Points.Count - 1], destPoint) > ConnectorRouter.EndPointTolerance))) { connectorChild.Points = new PointCollection(); RoutePolyLine(connectorChild); } connectorChild.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity)); } else { continue; } } else //Measure non-connector elements. { child.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity)); if (!child.DesiredSize.Equals(((Size)FreeFormPanel.GetChildSize(child)))) { FreeFormPanel.SetChildSize(child, child.DesiredSize); } pt = FreeFormPanel.GetLocation(child); if (!IsLocationValid(pt)) { pt = new Point(LeftStackingMargin, lastYPosition); OnLocationChanged(child, new LocationChangedEventArgs(pt)); FreeFormPanel.SetLocation(child, pt); lastYPosition += child.DesiredSize.Height + VerticalStackingDistance; } } if (height < child.DesiredSize.Height + pt.Y) { height = child.DesiredSize.Height + pt.Y; } if (width < child.DesiredSize.Width + pt.X) { width = child.DesiredSize.Width + pt.X; } } width = (width < this.MinWidth) ? this.MinWidth : width; height = (height < this.MinHeight) ? this.MinHeight : height; }