public void Finished(object sender, InputModeEventArgs e)
{
if (editingContext != null)
{
editingContext.DragFinished();
editingContext = null;
}
}
public void Canceled(object sender, InputModeEventArgs e)
{
if (editingContext != null)
{
editingContext.CancelDrag();
editingContext = null;
}
}
public void Starting(object sender, InputModeEventArgs e)
{
IInputModeContext context = e.Context;
var edgeEditingContext = context.Lookup <OrthogonalEdgeEditingContext>();
if (edgeEditingContext != null && !edgeEditingContext.IsInitializing && !edgeEditingContext.IsInitialized)
{
editingContext = edgeEditingContext;
editingContext.InitializeDrag(context);
}
else
{
editingContext = null;
}
}
public virtual void InitializeReshape(IInputModeContext context)
{
this.OriginalBounds = rectangle.TightRectangle;
// register our CollectSnapResults callback
var snapContext = context.Lookup <GraphSnapContext>();
if (snapContext != null)
{
snapContext.CollectSnapResults += CollectSnapResults;
}
// store original node layouts, reshape handlers and reshape snap result providers
foreach (var node in ReshapeNodes)
{
originalNodeLayouts.Add(node, node.Layout.ToRectD());
// store reshape handler to change the shape of node
var reshapeHandler = node.Lookup <IReshapeHandler>();
if (reshapeHandler != null)
{
reshapeHandler.InitializeReshape(context);
reshapeHandlers.Add(node, reshapeHandler);
}
// store reshape snap result provider to collect snap results where node would snap to snaplines etc.
var snapResultProvider = node.Lookup <INodeReshapeSnapResultProvider>();
if (snapContext != null && snapResultProvider != null)
{
reshapeSnapResultProviders.Add(node, snapResultProvider);
}
// store orthogonal edge drag handler that keeps edges at node orthogonal
var orthogonalEdgeDragHandler = OrthogonalEdgeEditingContext.CreateOrthogonalEdgeDragHandler(context, node, false);
if (orthogonalEdgeDragHandler != null)
{
orthogonalEdgeDragHandlers[node] = orthogonalEdgeDragHandler;
}
}
// update the minimum/maximum size of the handle considering all initial node layouts
Handle.MinimumSize = CalculateMinimumSize();
Handle.MaximumSize = CalculateMaximumSize();
// start a compound undo unit
this.compoundEdit = context.GetGraph().BeginEdit("Undo Group Resize", "Redo Group Resize");
}
