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 MoveGroup(MouseEventArgs e)
{
if (ActionObject.Point != null)
{
var delta_x = e.RelativeXTo(ActionObject.Point) / NavigationSettings.Zoom;
var delta_y = e.RelativeYTo(ActionObject.Point) / NavigationSettings.Zoom;
foreach (var node in Group.Nodes)
{
node.MoveTo(node.X + delta_x, node.Y + delta_y);
}
(ActionObject.Point.X, ActionObject.Point.Y) = (e.ClientX, e.ClientY);
}
else
{
ActionObject.SetPoint(new Point(e.ClientX, e.ClientY));
ActionObject.RememberOrigin(new Point(ActionObject.Node.X, ActionObject.Node.Y));
}
Overview?.TriggerUpdate();
}
private void MoveControlPoint(MouseEventArgs e)
{
if (ActionObject.Point != null)
{
var point = ActionObject.ControlPoint;
var delta_x = e.RelativeXTo(ActionObject.Point) / NavigationSettings.Zoom;
var delta_y = e.RelativeYTo(ActionObject.Point) / NavigationSettings.Zoom;
point.X += delta_x;
point.Y += delta_y;
(ActionObject.Point.X, ActionObject.Point.Y) = (e.ClientX, e.ClientY);
Overview?.TriggerUpdate();
ActionObject.Link.TriggerStateHasChanged();
}
else
{
ActionObject.SetPoint(new Point(e.ClientX, e.ClientY));
ActionObject.RememberOrigin(new Point(ActionObject.ControlPoint.X, ActionObject.ControlPoint.Y));
}
}
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 RelativeXToOrigin(this MouseEventArgs e, Diagram diagram) => e.RelativeXTo(diagram) + diagram.NavigationSettings.Origin.X;