static List <ConnectionPoint> GetAllConnectionPoints(UIElement shape)
{
List <ConnectionPoint> allConnectionPoints = new List <ConnectionPoint>(6);
allConnectionPoints.AddRange(FlowchartDesigner.GetConnectionPoints(shape));
allConnectionPoints.Add(FlowchartDesigner.GetTrueConnectionPoint(shape));
allConnectionPoints.Add(FlowchartDesigner.GetFalseConnectionPoint(shape));
return(allConnectionPoints);
}
ConnectionPoint ConnectionPointHitTest(UIElement element, Point hitPoint)
{
List <ConnectionPoint> connectionPoints = new List <ConnectionPoint>();
List <ConnectionPoint> defaultConnectionPoints = FlowchartDesigner.GetConnectionPoints(element);
connectionPoints.InsertRange(0, defaultConnectionPoints);
connectionPoints.Add(FlowchartDesigner.GetTrueConnectionPoint(element));
connectionPoints.Add(FlowchartDesigner.GetFalseConnectionPoint(element));
return(FreeFormPanel.ConnectionPointHitTest(hitPoint, connectionPoints, this.panel));
}
/// <summary>
/// for connection:
/// 1. return all free connection points are available on the object
/// 2. return any existing points that are already connected on the object, excluding the unmatched type.
/// Fallback: return all connection points of the given object
/// </summary>
/// <param name="sourceConnectionPoint"></param>
/// <param name="dest"></param>
/// <param name="errorMessage"></param>
/// <returns></returns>
ConnectionPoint FindBestMatchDestConnectionPoint(ConnectionPoint sourceConnectionPoint, UIElement dest, out string errorMessage)
{
List <ConnectionPoint> destConnPoints = FlowchartDesigner.GetConnectionPoints(dest);
Fx.Assert(null != destConnPoints && destConnPoints.Any(), "A flownode designer object should have one connection point.");
errorMessage = string.Empty;
if (sourceConnectionPoint.PointType == ConnectionPointKind.Incoming)
{
errorMessage = SR.FCInvalidLink;
return(null);
}
ConnectionPoint destConnectionPoint;
double minDist;
List <ConnectionPoint> candidateDestConnPoints = FindCandidatePointsForLink(destConnPoints, ConnectionPointKind.Outgoing);
destConnectionPoint = FindClosestConnectionPoint(sourceConnectionPoint, candidateDestConnPoints, out minDist);
return(destConnectionPoint);
}
internal bool CreateLinkGesture(UIElement source, ConnectionPoint destConnectionPoint, Point mouseLocation, out string errorMessage, bool isLinkValidDueToLinkMove, IFlowSwitchLink caseKey)
{
bool linkCreated = false;
double minDist;
errorMessage = string.Empty;
ConnectionPoint sourceConnectionPoint = FindClosestConnectionPoint(
mouseLocation,
FlowchartDesigner.GetConnectionPoints(source).Where(p => p.PointType != ConnectionPointKind.Incoming).ToList(),
out minDist);
if (sourceConnectionPoint != null)
{
linkCreated = CreateLinkGesture(sourceConnectionPoint, destConnectionPoint, out errorMessage, isLinkValidDueToLinkMove, caseKey);
}
else
{
errorMessage = SR.FCInvalidLink;
}
return(linkCreated);
}
