static ConnectionPoint ConnectionPointHitTest(UIElement element, Point hitPoint)
{
ConnectionPoint hitConnectionPoint = null;
List <ConnectionPoint> connectionPoints = StateContainerEditor.GetConnectionPoints(element);
foreach (ConnectionPoint connPoint in connectionPoints)
{
if (connPoint != null)
{
// We need to transform the connection point location to be relative to the outmost panel
FreeFormPanel panel = GetVisualAncestor <FreeFormPanel>(element);
if (new Rect(panel.GetLocationRelativeToOutmostPanel(connPoint.Location) + connPoint.HitTestOffset, connPoint.HitTestSize).Contains(hitPoint))
{
hitConnectionPoint = connPoint;
break;
}
}
}
return(hitConnectionPoint);
}
static internal ConnectionPoint GetClosestConnectionPoint(ConnectionPoint srcConnPoint, List <ConnectionPoint> destConnPoints, out double minDist)
{
minDist = double.PositiveInfinity;
double dist = 0;
ConnectionPoint closestPoint = null;
Point srcPoint = FreeFormPanel.GetLocationRelativeToOutmostPanel(srcConnPoint);
foreach (ConnectionPoint destConnPoint in destConnPoints)
{
if (srcConnPoint != destConnPoint)
{
dist = DesignerGeometryHelper.ManhattanDistanceBetweenPoints(srcPoint, FreeFormPanel.GetLocationRelativeToOutmostPanel(destConnPoint));
if (dist < minDist)
{
minDist = dist;
closestPoint = destConnPoint;
}
}
}
return(closestPoint);
}