public void InitializeInputModes()
{
// Create a default editor input mode
GraphEditorInputMode editMode = new GraphEditorInputMode();
// then customize it to suit our needs
// orthogonal edges
editMode.OrthogonalEdgeEditingContext = new OrthogonalEdgeEditingContext();
// snapping
editMode.SnapContext = new GraphSnapContext {
CollectEdgeSnapLines = false,
CollectNodePairSegmentSnapLines = false,
CollectNodePairSnapLines = false,
CollectPortSnapLines = false,
SnapBendAdjacentSegments = false,
SnapPortAdjacentSegments = false,
SnapBendsToSnapLines = false,
SnapSegmentsToSnapLines = false,
GridSnapType = GridSnapTypes.All,
NodeGridConstraintProvider = new GridConstraintProvider <INode>(20),
GridSnapDistance = double.MaxValue,
VisualizeSnapResults = false,
};
// tweak the CreateEdgeInputMode
editMode.CreateEdgeInputMode.ShowPortCandidates = ShowPortCandidates.None;
editMode.CreateEdgeInputMode.SnapToTargetCandidate = false;
//Enable label editing only for edges and edge labels
editMode.LabelEditableItems = GraphItemTypes.Edge | GraphItemTypes.EdgeLabel;
// we add a command to the KeyboardInputMode, although this will not be triggered
// by a keyboard gesture, this has the advantage that the command is disabled
// if any of the input modes owns the mutex.
editMode.KeyboardInputMode.AddCommandBinding(UMLClassStyle.AdjustNodeBoundsCommand,
delegate(object sender, ExecutedCommandEventArgs args) {
INode node = args.Parameter as INode;
if (node != null && node.Style is UMLClassStyle)
{
UMLClassStyle style = (UMLClassStyle)node.Style;
var preferredSize = style.GetPreferredSize(node);
preferredSize = new SizeD(Math.Max(node.Layout.Width, preferredSize.Width), preferredSize.Height);
RectD newBounds = new RectD(node.Layout.GetTopLeft(), preferredSize);
editMode.SetNodeLayout(node, newBounds);
}
});
// customize the node creation
editMode.NodeCreator = CreateNode;
// and finally register our input mode with the control.
graphControl.InputMode = editMode;
}
private void ResizeNodeExecuted(object sender, ExecutedRoutedEventArgs e)
{
NodeControl nodeControl = e.OriginalSource as NodeControl;
if (nodeControl != null)
{
// parameter is desired size
var desiredSize = (Size?)e.Parameter;
if (desiredSize.HasValue)
{
INode node = nodeControl.Item;
GraphEditorInputMode mode = (GraphEditorInputMode)graphControl.InputMode;
IRectangle layout = node.Layout;
// adjust only height
mode.SetNodeLayout(node, new RectD(layout.X, layout.Y, layout.Width, desiredSize.Value.Height));
e.Handled = true;
}
}
}