private void EndLink(MouseEventArgs e)
{
var link = ActionObject.Link;
var node = ActiveElement.Node;
if (node == null && !link.Links.AllowFreeFloatingLinks)
{
// free-floating links are not allowed and this action would not attach the link to a node
return;
}
if (node != null)
{
link.Target.Node = node;
link.Target.RelativeX = e.RelativeXTo(node);
link.Target.RelativeY = e.RelativeYTo(node);
}
else
{
link.Target.RelativeX = e.RelativeXToOrigin(this);
link.Target.RelativeY = e.RelativeYToOrigin(this);
}
link.Deselect();
link.Links.OnModified?.Invoke(link);
Overview?.TriggerUpdate();
Changes.New(new ChangeAction(() => { Links.Add(link); }, () => { Links.Remove(link); }));
ActionObject.Clear();
ActionType = ActionType.None;
}
private void FollowCursorForLinkTarget(MouseEventArgs e)
{
var link = ActionObject.Link;
link.Target.RelativeX = e.RelativeXToOrigin(this);
link.Target.RelativeY = e.RelativeYToOrigin(this);
Overview?.TriggerUpdate();
}
private void MoveNodeAnchor(MouseEventArgs e)
{
if (ActionObject.Point != null)
{
var anchor = ActionObject.Anchor;
anchor.RelativeX = e.RelativeXToOrigin(this);
anchor.RelativeY = e.RelativeYToOrigin(this);
}
else
{
ActionObject.SetPoint(new Point(e.ClientX, e.ClientY));
var anchor = ActionObject.Anchor;
ActionObject.Remember(anchor.Node, anchor.RelativeX, anchor.RelativeY);
anchor.Node = null;
anchor.NodeId = null;
anchor.RelativeX = e.RelativeXToOrigin(this);
anchor.RelativeY = e.RelativeYToOrigin(this);
}
Overview?.TriggerUpdate();
}
internal void AddNewLink(NodeBase node, MouseEventArgs e, Action <LinkBase> on_link_create)
{
var source_point = new NodeAnchor
{
Node = node,
RelativeX = e.RelativeXTo(node),
RelativeY = e.RelativeYTo(node)
};
var target_point = new NodeAnchor
{
RelativeX = e.RelativeXToOrigin(Diagram),
RelativeY = e.RelativeYToOrigin(Diagram)
};
internally_generated_links.Add(new LinkData {
Source = source_point, Target = target_point, LinkType = DefaultType, Arrow = DefaultArrow, OnCreate = on_link_create
});
generated_links_ref.TriggerStateHasChanged();
}
public static double RelativeXTo(this MouseEventArgs e, NodeBase node) => e.RelativeXToOrigin(node.Diagram) - node.X;