public override object Clone()
{
PipeInfo d = (PipeInfo)base.Clone();
d.Level = this.Level;
d.Max = this.Max;
d.Current = this.Current;
return(d);
}
// test explicit layout, insertion of new PipeInfo, modifying existing PipeInfo
private void Grid_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.L) // layout the diagram again
{
myDiagram.LayoutDiagram();
}
else if (e.Key == Key.I) // insert a pipe
{
int id = 21;
while (myDiagram.Model.FindNodeByKey(id.ToString()) != null)
{
id++;
}
PipeInfo pi = new PipeInfo()
{
Key = id.ToString(), ParentKey = "2", Level = "New", Current = id
};
var pipes = myDiagram.Model.NodesSource as ObservableCollection <PipeInfo>;
if (pipes != null)
{
// need StartTransaction/CommitTransaction if supporting undo/redo
myDiagram.StartTransaction("add node");
pipes.Add(pi);
myDiagram.CommitTransaction("add node");
}
}
else if (e.Key == Key.M) // modify a particular pipe
{
PipeInfo pi = myDiagram.Model.FindNodeByKey("11") as PipeInfo;
if (pi != null)
{
// need StartTransaction/CommitTransaction if supporting undo/redo
myDiagram.StartTransaction("incrementing Current");
pi.Current++;
myDiagram.CommitTransaction("incrementing Current");
}
}
}
protected override void AssignTreeVertexValues(TreeVertex v)
{
base.AssignTreeVertexValues(v);
// Manually rotate the TextBlock and resize the background Rectangle
// based on the level/depth in the tree so that the node/vertex is approximately
// the correct (minimum) size, including the TextBlock and some space around it.
// This is kludgy but will work both in WPF and in Silverlight
// (there's no FrameworkElement.LayoutTransform in Silverlight).
Node node = v.Node;
FrameworkElement back = node.FindNamedDescendant("Background");
FrameworkElement tb = node.FindNamedDescendant("TextBlock");
// find how big the TextBlock is
Size tsize = new Size(tb.ActualWidth, tb.ActualHeight);
// length includes some space at both ends
double textlen = tsize.Width + 20;
PipeInfo pi = node.Data as PipeInfo;
// the thickness of the "pipe" Rectangle
double boxthickness = Math.Max(pi.Current, 20);
if (v.Angle == 0 || v.Angle == 180) // if tree is growing sideways
// the Background Rectangle is sized according to PipeInfo.Current
// and is long enough to hold the text
{
back.Width = boxthickness;
back.Height = textlen;
node.SetAngle(tb, 90); // and the text is turned to 90 degrees
}
else
{
back.Width = textlen;
back.Height = boxthickness;
node.SetAngle(tb, 0); // normal upright text
}
// update the vertex with the new size
v.Bounds = new Rect(0, 0, back.Width, back.Height);
}