protected DiagramSelectionBorder CalculateNodeBorder(DiagramNode node)
{
var border = new DiagramSelectionBorder();
var bounds = node.Bounds;
border.ResizeInfos.Add(new ResizeInfo(bounds.TopLeft, ResizeDirection.DescendingTopLeft));
border.ResizeInfos.Add(new ResizeInfo(new Point((bounds.Left + bounds.Right) / 2, bounds.Top), ResizeDirection.VerticalTop));
border.ResizeInfos.Add(new ResizeInfo(bounds.TopRight, ResizeDirection.AscendingTopRight));
border.ResizeInfos.Add(new ResizeInfo(new Point(bounds.Right, (bounds.Top + bounds.Bottom) / 2), ResizeDirection.HorizontalRight));
border.ResizeInfos.Add(new ResizeInfo(bounds.BottomRight, ResizeDirection.DescendingBottomRight));
border.ResizeInfos.Add(new ResizeInfo(new Point((bounds.Left + bounds.Right) / 2, bounds.Bottom), ResizeDirection.VerticalBottom));
border.ResizeInfos.Add(new ResizeInfo(bounds.BottomLeft, ResizeDirection.AscendingBottomLeft));
border.ResizeInfos.Add(new ResizeInfo(new Point(bounds.Left, (bounds.Top + bounds.Bottom) / 2), ResizeDirection.HorizontalLeft));
return border;
}
protected override DiagramSelectionBorder CalculateEdgeBorder(DiagramEdge edge)
{
var geometry = edge.Geometry as PathGeometry;
if (geometry == null)
return null;
if (geometry.Figures.Count != 2)
return null;
var border = new DiagramSelectionBorder(false);
var mainFigure = geometry.Figures[0];
var arrowFigure = geometry.Figures[1];
border.ResizeInfos.Add(new ResizeInfo(mainFigure.StartPoint, ResizeDirection.AllRoundSource));
border.ResizeInfos.Add(new ResizeInfo((arrowFigure.Segments[1] as LineSegment).Point, ResizeDirection.AllRoundDestination));
return border;
}
protected virtual DiagramSelectionBorder CalculateLabelBorder(DiagramLabel label)
{
var textGeometry = label.Geometry as Geometry;
if (textGeometry == null)
return null;
var rectGeometry = textGeometry as RectangleGeometry;
if (rectGeometry == null)
return null;
var border = new DiagramSelectionBorder();
border.ResizeInfos.Add(new ResizeInfo(rectGeometry.Bounds.TopLeft, ResizeDirection.None));
border.ResizeInfos.Add(new ResizeInfo(rectGeometry.Bounds.TopRight, ResizeDirection.None));
border.ResizeInfos.Add(new ResizeInfo(rectGeometry.Bounds.BottomRight, ResizeDirection.None));
border.ResizeInfos.Add(new ResizeInfo(rectGeometry.Bounds.BottomLeft, ResizeDirection.None));
return border;
}