protected virtual void OnLoaded(object src, EventArgs args)
{
InitializeInputModes();
// Decorate the lookup of the nodes to change the default behavior
// for moving, selection paint, resizing, etc.
IGraph graph = graphControl.Graph;
ILookupDecorator decorator = graph.Lookup <ILookupDecorator>();
if (decorator != null && decorator.CanDecorate(typeof(INode)))
{
decorator.AddLookup(typeof(INode), new UMLNodeLookupChainLink());
}
// register a node grid with the canvas' input mode context lookup
GridConstraintProvider <INode> nodeGrid = new GridConstraintProvider <INode>(20);
IContextLookupChainLink gridLink =
Lookups.AddingLookupChainLink(typeof(IGridConstraintProvider <INode>), nodeGrid);
graphControl.InputModeContextLookupChain.Add(gridLink);
// remove the highlight indicator manager from the input context - disables highlight hints
IContextLookupChainLink hidingLink = Lookups.HidingLookupChainLink(typeof(HighlightIndicatorManager <IModelItem>));
graphControl.InputModeContextLookupChain.Add(hidingLink);
// Create a style
var umlStyle = new NodeControlNodeStyle("ClassInfoNodeStyle");
graph.NodeDefaults.Style = umlStyle;
// Add a sample node
INode node = CreateNode(null, graphControl.Graph, new PointD(100, 100), null);
node.Tag = CreateDefaultClassInfo();
// Enable clipboard
graphControl.Clipboard = new GraphClipboard
{
ToClipboardCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
},
FromClipboardCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
},
DuplicateCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
}
};
}
/// <summary>
/// Sets, removes and updates the custom selection decoration for nodes,
/// edges, and labels according to the current settings.
/// </summary>
public void UpdateDecoration()
{
var selectedZoomMode = (StyleDecorationZoomPolicy)zoomModeComboBox.SelectedItem;
nodeDecorationInstaller.ZoomPolicy = selectedZoomMode;
edgeDecorationInstaller.ZoomPolicy = selectedZoomMode;
labelDecorationInstaller.ZoomPolicy = selectedZoomMode;
var graphDecorator = graphControl.Graph.GetDecorator();
var nodeDecorator = graphDecorator.NodeDecorator;
var edgeDecorator = graphDecorator.EdgeDecorator;
var labelDecorator = graphDecorator.LabelDecorator;
if (!IsChecked(CustomNodeDecoratorButton) && nodeDecorationLookupChainLink != null)
{
nodeDecorator.Remove(nodeDecorationLookupChainLink);
nodeDecorationLookupChainLink = null;
}
else if (IsChecked(CustomNodeDecoratorButton) && nodeDecorationLookupChainLink == null)
{
nodeDecorationLookupChainLink = nodeDecorator.SelectionDecorator.SetFactory(node => nodeDecorationInstaller);
}
if (!IsChecked(CustomEdgeDecoratorButton) && edgeDecorationLookupChainLink != null)
{
edgeDecorator.Remove(edgeDecorationLookupChainLink);
edgeDecorationLookupChainLink = null;
}
else if (IsChecked(CustomEdgeDecoratorButton) && edgeDecorationLookupChainLink == null)
{
edgeDecorationLookupChainLink = edgeDecorator.SelectionDecorator.SetFactory(edge => edgeDecorationInstaller);
}
if (!IsChecked(CustomLabelDecoratorButton) && labelDecorationLookupChainLink != null)
{
labelDecorator.Remove(labelDecorationLookupChainLink);
labelDecorationLookupChainLink = null;
}
else if (IsChecked(CustomLabelDecoratorButton) && labelDecorationLookupChainLink == null)
{
labelDecorationLookupChainLink = labelDecorator.SelectionDecorator.SetFactory(label => labelDecorationInstaller);
}
}
public UMLClassStyleDemo()
{
InitializeComponent();
InitializeInputModes();
openButton.SetCommand(Commands.Open, graphControl);
saveButton.SetCommand(Commands.SaveAs, graphControl);
graphControl.FileOperationsEnabled = true;
description.LoadFile(new MemoryStream(Resources.description), RichTextBoxStreamType.RichText);
// Decorate the lookup of the nodes to change the default behavior
// for moving, selection paint, resizing, etc.
IGraph graph = graphControl.Graph;
graph.SetUndoEngineEnabled(true);
var nodeDecorator = graph.GetDecorator().NodeDecorator;
// set a custom IPositionHandler for nodes with UMLClassStyle
nodeDecorator.PositionHandlerDecorator.SetImplementationWrapper(
node => node.Style is UMLClassStyle,
(node, handler) => new UMLPositionHandler(handler, node));
// for resizing the item using a shadow and grid
nodeDecorator.ReshapeHandleProviderDecorator.SetImplementationWrapper(
node => node.Style is UMLClassStyle,
(node, provider) => {
if (provider is ReshapeHandleProviderBase)
{
((ReshapeHandleProviderBase)provider).HandlePositions = HandlePositions.East | HandlePositions.West;
}
return(provider);
});
nodeDecorator.NodeSnapResultProviderDecorator.SetImplementation(node => node.Style is UMLClassStyle, new MyNodeSnapResultProvider());
// constrain the size
nodeDecorator.SizeConstraintProviderDecorator.SetImplementation(
node => node.Style is UMLClassStyle,
new NodeSizeConstraintProvider(new SizeD(100, 0), new SizeD(800, double.MaxValue)));
// to decorate the node's lookup for types which are not provided with the GraphDecorator
// we need to decorate the "low level" lookup decorator:
var lookupDecorator = graph.SafeLookup <ILookupDecorator>();
// set a custom IReshapeHandler
// for dragging the item using a shadow and grid
lookupDecorator.Add <INode, IReshapeHandler>((node, handler) => new UMLReshapeHandler(handler));
// get the class info from the tag:
lookupDecorator.Add <INode, ClassInfo>(node => node.Tag as ClassInfo);
// register a node grid with the canvas' input mode context lookup
GridConstraintProvider <INode> nodeGrid = new GridConstraintProvider <INode>(20);
IContextLookupChainLink gridLink =
Lookups.AddingLookupChainLink(typeof(IGridConstraintProvider <INode>), nodeGrid);
graphControl.InputModeContextLookupChain.Add(gridLink);
// remove the highlight indicator manager from the input context - disables highlight hints
IContextLookupChainLink hidingLink = Lookups.HidingLookupChainLink(typeof(HighlightIndicatorManager <IModelItem>));
graphControl.InputModeContextLookupChain.Add(hidingLink);
// Create a style
UMLClassStyle umlStyle = new UMLClassStyle();
graph.NodeDefaults.Style = umlStyle;
graph.NodeDefaults.Size = new SizeD(100, 100);
// Add a sample node
INode sampleNode = graph.CreateNode(new PointD(100, 100));
sampleNode.Tag = CreateDefaultClassInfo();
SizeF preferredSize = umlStyle.GetPreferredSize(sampleNode);
graph.SetNodeLayout(sampleNode, new RectD(new PointD(100, 100), preferredSize));
// Enable clipboard
graphControl.Clipboard = new GraphClipboard {
ToClipboardCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
},
FromClipboardCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
},
DuplicateCopier =
{
Clone = GraphCopier.CloneTypes.Tags,
ReferentialIdentityTypes = GraphCopier.CloneTypes.All
}
};
}