private void InitDocument()
{
NDrawingDocument document = NDrawingView1.Document;
// remove the standard frame
document.BackgroundStyle.FrameStyle.Visible = false;
// set up visual formatting
document.Style.FillStyle = new NGradientFillStyle(GradientStyle.Horizontal, GradientVariant.Variant3, Color.FromArgb(192, 194, 194), Color.FromArgb(129, 133, 133));
document.Style.StrokeStyle = new NStrokeStyle(1, Color.FromArgb(68, 90, 108));
// create a stylesheet for the edges
NStyleSheet sheet = new NStyleSheet("edges");
sheet.Style.StartArrowheadStyle = new NArrowheadStyle(ArrowheadShape.None, "", NSizeL.Empty, document.Style.FillStyle, document.Style.StrokeStyle);
sheet.Style.EndArrowheadStyle = new NArrowheadStyle(ArrowheadShape.None, "", NSizeL.Empty, document.Style.FillStyle, document.Style.StrokeStyle);
document.StyleSheets.AddChild(sheet);
// generate a simple tree
NGenericTreeTemplate tree = new NGenericTreeTemplate();
tree.VerticesSize = new NSizeF(80, 80);
tree.EdgesStyleSheetName = "edges";
tree.Create(document);
// create a show/hide decorator for all shapes that have children
NNodeList shapes = document.ActiveLayer.Descendants(NFilters.Shape2D, -1);
int i, count = shapes.Count;
for (i = 0; i < count; i++)
{
NShape shape = (NShape)shapes[i];
if (shape.GetOutgoingShapes().Count == 0)
{
continue;
}
shape.CreateShapeElements(ShapeElementsMask.Decorators);
NShowHideSubtreeDecorator decorator = new NShowHideSubtreeDecorator();
decorator.Name = "ShowHideSubtree";
shape.Decorators.AddChild(new NShowHideSubtreeDecorator());
}
// size the document to the content
document.SizeToContent();
}
