protected override Size ArrangeOverride(Size finalSize)
{
double height = 0;
double width = 0;
for (int i = 0; i < Children.Count; i++)
{
Point pt = new Point(0, 0);
Size size = Children[i].DesiredSize;
if (Children[i].GetType() == typeof(Connector))
{
((UIElement)Children[i]).Arrange(new Rect(pt, size));
}
else
{
pt = FreeFormPanel.GetLocation(Children[i]);
((UIElement)Children[i]).Arrange(new Rect(pt, size));
}
if (width < (size.Width + pt.X))
{
width = size.Width + pt.X;
}
if (height < (size.Height + pt.Y))
{
height = size.Height + pt.Y;
}
}
width = (width < this.MinWidth) ? this.MinWidth : width;
width = (width < this.Width) ? (this.Width < Double.MaxValue ? this.Width : width) : width;
height = (height < this.MinHeight) ? this.MinHeight : height;
height = (height < this.Height) ? (this.Height < Double.MaxValue ? this.Height : height) : height;
return(new Size(width, height));
}
//The Connector editor is to be destroyed. Remove the adorners on the editor. activeEditPoint=null sets BeingEdited property to false.
public void Remove()
{
this.activeEditPoint = null;
RemoveAdorners();
this.EditPoints.Clear();
this.Connector.IsSelected = false;
// Restore the IsHitTestVisible property
this.SetIsHitTestVisibleForOverlappingStartDots(true);
this.Connector = null;
this.parentPanel = null;
}
public static Point CalculateDropLocation(Point mousePosition, Point originalDropLocation, Connector connector, Size droppedSize, HashSet <Point> shapeLocations)
{
UIElement srcShape = FreeFormPanel.GetSourceConnectionPoint(connector).ParentDesigner;
UIElement destShape = FreeFormPanel.GetDestinationConnectionPoint(connector).ParentDesigner;
Point srcLocation = FreeFormPanel.GetLocation(srcShape);
Point destLocation = FreeFormPanel.GetLocation(destShape);
Size srcSize = FreeFormPanel.GetChildSize(srcShape);
Size destSize = FreeFormPanel.GetChildSize(destShape);
return(CalculateDropLocation(mousePosition, originalDropLocation, droppedSize, srcLocation, destLocation, srcSize, destSize, shapeLocations));
}
void SetIsHitTestVisibleForOverlappingStartDots(bool hitTestVisible)
{
ConnectionPoint srcConnectionPoint = FreeFormPanel.GetSourceConnectionPoint(this.Connector);
foreach (Connector overlappingConnector in srcConnectionPoint.AttachedConnectors)
{
if (overlappingConnector.StartDot != null)
{
overlappingConnector.StartDot.IsHitTestVisible = hitTestVisible;
}
}
}
internal static ConnectionPoint ConnectionPointHitTest(Point hitPoint, List <ConnectionPoint> connectionPoints, FreeFormPanel panel)
{
ConnectionPoint hitConnectionPoint = null;
FreeFormPanel outmost = panel.GetOutmostPanel();
foreach (ConnectionPoint connPoint in connectionPoints)
{
if (connPoint != null && connPoint.IsEnabled)
{
if (new Rect(panel.TranslatePoint(connPoint.Location, outmost) + connPoint.HitTestOffset, connPoint.HitTestSize).Contains(hitPoint))
{
hitConnectionPoint = connPoint;
break;
}
}
}
return(hitConnectionPoint);
}
public ConnectorEditor(FreeFormPanel panel, Connector connector)
{
if (panel == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException("panel"));
}
if (connector == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException("connector"));
}
this.editPoints = new List<EditPoint>();
this.parentPanel = panel;
this.editedConnector = connector;
this.activeEditPoint = null;
connector.IsSelected = true;
// When the ConnectorEditor is active, we allow reconnecting the start point of the Connector instead
// of creating a new transition that shares the same trigger. So we need to disable tooltips and
// highlighting effects for all overlapping start dots.
this.SetIsHitTestVisibleForOverlappingStartDots(false);
DisplayEditPoints();
}
public ConnectorEditor(FreeFormPanel panel, Connector connector)
{
if (panel == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException("panel"));
}
if (connector == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException("connector"));
}
this.editPoints = new List <EditPoint>();
this.parentPanel = panel;
this.editedConnector = connector;
this.activeEditPoint = null;
connector.IsSelected = true;
// When the ConnectorEditor is active, we allow reconnecting the start point of the Connector instead
// of creating a new transition that shares the same trigger. So we need to disable tooltips and
// highlighting effects for all overlapping start dots.
this.SetIsHitTestVisibleForOverlappingStartDots(false);
DisplayEditPoints();
}
public static void CalculateEntryExitEdges(Point mousePosition, Connector connector, out EdgeLocation entryEdge, out EdgeLocation exitEdge)
{
UIElement srcShape = FreeFormPanel.GetSourceConnectionPoint(connector).ParentDesigner;
UIElement destShape = FreeFormPanel.GetDestinationConnectionPoint(connector).ParentDesigner;
Point srcLocation = FreeFormPanel.GetLocation(srcShape);
Point destLocation = FreeFormPanel.GetLocation(destShape);
Size srcSize = FreeFormPanel.GetChildSize(srcShape);
Size destSize = FreeFormPanel.GetChildSize(destShape);
Point srcCenter = new Point(srcLocation.X + (srcSize.Width / 2), srcLocation.Y + (srcSize.Height / 2));
Point destCenter = new Point(destLocation.X + (destSize.Width / 2), destLocation.Y + (destSize.Height / 2));
entryEdge = CalculateEdgeLocation(mousePosition, srcCenter);
exitEdge = CalculateEdgeLocation(mousePosition, destCenter);
if (exitEdge == entryEdge)
{
switch (entryEdge)
{
case EdgeLocation.Top:
exitEdge = EdgeLocation.Bottom;
break;
case EdgeLocation.Bottom:
exitEdge = EdgeLocation.Top;
break;
case EdgeLocation.Left:
exitEdge = EdgeLocation.Right;
break;
case EdgeLocation.Right:
exitEdge = EdgeLocation.Left;
break;
}
}
}
void OnFreeFormPanelLoaded(object sender, RoutedEventArgs eventArgs)
{
//Adding the following check because of 137896: Inside tab control multiple Loaded events happen without an Unloaded event.
if (this.panel != null)
{
CleanupFlowchart();
}
this.panel = (FreeFormPanel)sender;
if (this.ShowExpanded)
{
PopulateFlowchartChildren();
}
}
//Unregister all events. Reset startNodeAdded to enable reuse of the designer.
void CleanupFlowchart()
{
this.startNodeAdded = false;
this.panel.Children.Clear();
this.flowNodeToUIElement.Clear();
// Cleaning up the designers as they might be re-used.
foreach (UIElement element in this.modelElement.Values)
{
element.MouseEnter -= new MouseEventHandler(ChildElement_MouseEnter);
element.MouseLeave -= new MouseEventHandler(ChildElement_MouseLeave);
}
this.panel.LocationChanged -= new LocationChangedEventHandler(OnFreeFormPanelLocationChanged);
this.panel.ConnectorMoved -= new ConnectorMovedEventHandler(OnFreeFormPanelConnectorMoved);
this.panel.LayoutUpdated -= new EventHandler(OnFreeFormPanelLayoutUpdated);
this.panel.RequiredSizeChanged -= new RequiredSizeChangedEventHandler(OnFreeFormPanelRequiredSizeChanged);
this.panel = null;
ModelTreeManager modelTreeManager = (this.ModelItem as IModelTreeItem).ModelTreeManager;
modelTreeManager.EditingScopeCompleted -= new EventHandler<EditingScopeEventArgs>(ModelTreeManager_EditingScopeCompleted);
this.ViewStateService.ViewStateChanged -= new ViewStateChangedEventHandler(OnViewStateChanged);
}
public AutoConnectHelper(FreeFormPanel panel)
{
this.panel = panel;
}
//The Connector editor is to be destroyed. Remove the adorners on the editor. activeEditPoint=null sets BeingEdited property to false.
public void Remove()
{
this.activeEditPoint = null;
RemoveAdorners();
this.EditPoints.Clear();
this.Connector.IsSelected = false;
// Restore the IsHitTestVisible property
this.SetIsHitTestVisibleForOverlappingStartDots(true);
this.Connector = null;
this.parentPanel = null;
}
internal static ConnectionPoint ConnectionPointHitTest(Point hitPoint, List<ConnectionPoint> connectionPoints, FreeFormPanel panel)
{
ConnectionPoint hitConnectionPoint = null;
FreeFormPanel outmost = panel.GetOutmostPanel();
foreach (ConnectionPoint connPoint in connectionPoints)
{
if (connPoint != null && connPoint.IsEnabled)
{
if (new Rect(panel.TranslatePoint(connPoint.Location, outmost) + connPoint.HitTestOffset, connPoint.HitTestSize).Contains(hitPoint))
{
hitConnectionPoint = connPoint;
break;
}
}
}
return hitConnectionPoint;
}
public AutoConnectAdorner(UIElement adornedElement, FreeFormPanel panel, AutoConnectDirections directions)
: base(adornedElement)
{
this.panel = panel;
this.directions = directions;
Size size = FreeFormPanel.GetChildSize(this.AdornedElement);
this.adornedElementRect = new Rect(new Point(0, 0), size);
this.hitTestRects = new Rect[]
{
new Rect(-HitTestHeight, (size.Height / 2) - (HitTestWidth / 2), HitTestHeight, HitTestWidth),
new Rect(size.Width, (size.Height / 2) - (HitTestWidth / 2), HitTestHeight, HitTestWidth),
new Rect((size.Width / 2) - (HitTestWidth / 2), -HitTestHeight, HitTestWidth, HitTestHeight),
new Rect((size.Width / 2) - (HitTestWidth / 2), size.Height, HitTestWidth, HitTestHeight)
};
this.renderGeometries = new PathGeometry[]
{
new PathGeometry()
{
Figures =
{
new PathFigure()
{
StartPoint = new Point(-DropTargetOffset - TriangleHeight, size.Height / 2), Segments =
{
new LineSegment() { Point = new Point(-DropTargetOffset, (size.Height / 2) - (TriangleBaseLength / 2)) },
new LineSegment() { Point = new Point(-DropTargetOffset, (size.Height / 2) + (TriangleBaseLength / 2)) },
new LineSegment() { Point = new Point(-DropTargetOffset - TriangleHeight, size.Height / 2) }
}
}
}
},
new PathGeometry()
{
Figures =
{
new PathFigure()
{
StartPoint = new Point(size.Width + DropTargetOffset, (size.Height / 2) - (TriangleBaseLength / 2)), Segments =
{
new LineSegment() { Point = new Point(size.Width + DropTargetOffset + TriangleHeight, size.Height / 2) },
new LineSegment() { Point = new Point(size.Width + DropTargetOffset, (size.Height / 2) + (TriangleBaseLength / 2)) },
new LineSegment() { Point = new Point(size.Width + DropTargetOffset, (size.Height / 2) - (TriangleBaseLength / 2)) }
}
}
}
},
new PathGeometry()
{
Figures =
{
new PathFigure()
{
StartPoint = new Point((size.Width / 2) - (TriangleBaseLength / 2), -DropTargetOffset), Segments =
{
new LineSegment() { Point = new Point((size.Width / 2), -DropTargetOffset - TriangleHeight) },
new LineSegment() { Point = new Point((size.Width / 2) + (TriangleBaseLength / 2), -DropTargetOffset) },
new LineSegment() { Point = new Point((size.Width / 2) - (TriangleBaseLength / 2), -DropTargetOffset) }
}
}
}
},
new PathGeometry()
{
Figures =
{
new PathFigure()
{
StartPoint = new Point((size.Width / 2) - (TriangleBaseLength / 2), size.Height + DropTargetOffset), Segments =
{
new LineSegment() { Point = new Point((size.Width / 2) + (TriangleBaseLength / 2), size.Height + DropTargetOffset) },
new LineSegment() { Point = new Point((size.Width / 2), size.Height + TriangleHeight + DropTargetOffset) },
new LineSegment() { Point = new Point((size.Width / 2) - (TriangleBaseLength / 2), size.Height + DropTargetOffset) }
}
}
}
}
};
}
internal static ConnectionPoint ConnectionPointHitTest(Point hitPoint, ConnectionPointsAdorner adorner)
{
FreeFormPanel panel = VisualTreeUtils.FindVisualAncestor <FreeFormPanel>(adorner.AdornedElement);
return(ConnectionPointHitTest(hitPoint, adorner.ConnectionPoints, panel));
}
void UpdateEditPoints(Point newPoint)
{
if (this.editPoints.Count < 2 ||
this.editPoints[0].Type != EditPoint.EditPointTypes.ConnectionEditPoint ||
this.editPoints[this.editPoints.Count - 1].Type != EditPoint.EditPointTypes.ConnectionEditPoint)
{
Fx.Assert(false, "EditPoints are invalid");
return;
}
if (this.activeEditPoint != null)
{
int activeEditPointIndex = this.editPoints.IndexOf(this.activeEditPoint);
EditPoint previous = (activeEditPointIndex > 0) ? this.editPoints[activeEditPointIndex - 1] : null;
EditPoint next = (activeEditPointIndex < this.editPoints.Count - 1) ? this.editPoints[activeEditPointIndex + 1] : null;
//Note that extra edit points are only added if we are connected to connection point
if (previous != null && previous.Type == EditPoint.EditPointTypes.ConnectionEditPoint)
{
double slopeOfLine = DesignerGeometryHelper.SlopeOfLineSegment(previous.Location, this.activeEditPoint.Location);
Orientation orientation = (Math.Abs(slopeOfLine) < 1) ? Orientation.Horizontal : Orientation.Vertical;
int editPointOffset = Convert.ToInt32(DesignerGeometryHelper.DistanceBetweenPoints(previous.Location, (next != null) ? next.Location : this.activeEditPoint.Location)) / 4;
if (orientation == Orientation.Horizontal)
{
editPointOffset *= (previous.Location.X < this.activeEditPoint.Location.X) ? 1 : -1;
}
else
{
editPointOffset *= (previous.Location.Y < this.activeEditPoint.Location.Y) ? 1 : -1;
}
activeEditPointIndex = this.editPoints.IndexOf(this.activeEditPoint);
Point editPointLocation = (orientation == Orientation.Horizontal) ? new Point(previous.Location.X + editPointOffset, previous.Location.Y) : new Point(previous.Location.X, previous.Location.Y + editPointOffset);
previous = new EditPoint(EditPoint.EditPointTypes.MultiSegmentEditPoint, editPointLocation);
this.editPoints.InsertRange(activeEditPointIndex, new EditPoint[] { new EditPoint(EditPoint.EditPointTypes.MultiSegmentEditPoint, editPointLocation), previous });
}
if (next != null && next.Type == EditPoint.EditPointTypes.ConnectionEditPoint)
{
double slopeOfLine = DesignerGeometryHelper.SlopeOfLineSegment(this.activeEditPoint.Location, next.Location);
Orientation orientation = (Math.Abs(slopeOfLine) < 1) ? Orientation.Horizontal : Orientation.Vertical;
int editPointOffset = Convert.ToInt32(DesignerGeometryHelper.DistanceBetweenPoints((previous != null) ? previous.Location : this.activeEditPoint.Location, next.Location)) / 4;
if (orientation == Orientation.Horizontal)
{
editPointOffset *= (this.activeEditPoint.Location.X < next.Location.X) ? -1 : 1;
}
else
{
editPointOffset *= (this.activeEditPoint.Location.Y < next.Location.Y) ? -1 : 1;
}
activeEditPointIndex = this.editPoints.IndexOf(this.activeEditPoint);
Point editPointLocation = (orientation == Orientation.Horizontal) ? new Point(next.Location.X + editPointOffset, next.Location.Y) : new Point(next.Location.X, next.Location.Y + editPointOffset);
next = new EditPoint(EditPoint.EditPointTypes.MultiSegmentEditPoint, editPointLocation);
this.editPoints.InsertRange(activeEditPointIndex + 1, new EditPoint[] { next, new EditPoint(EditPoint.EditPointTypes.MultiSegmentEditPoint, editPointLocation) });
}
if (this.activeEditPoint.Type == EditPoint.EditPointTypes.ConnectionEditPoint)
{
Fx.Assert(this.editPoints[0].Type == EditPoint.EditPointTypes.ConnectionEditPoint, "EditPoint type is wrong.");
Fx.Assert(this.editPoints[editPoints.Count - 1].Type == EditPoint.EditPointTypes.ConnectionEditPoint, "EditPoint type is wrong.");
this.activeEditPoint.Location = newPoint;
Fx.Assert(this.editPoints.Count > 0, "Some edit point should exist");
ConnectionPoint targetConnPt = null;
Point[] points = null;
Point begin = this.editPoints[0].Location;
Point end = this.editPoints[this.editPoints.Count - 1].Location;
if (typeof(ConnectionPointsAdorner).IsAssignableFrom(Mouse.DirectlyOver.GetType()))
{
ConnectionPointsAdorner connPtsAdorner = Mouse.DirectlyOver as ConnectionPointsAdorner;
targetConnPt = FreeFormPanel.ConnectionPointHitTest(newPoint, connPtsAdorner);
}
if (activeEditPointIndex == 0)
{
// We are dragging the source point of a connector.
ConnectionPoint destConnPt = FreeFormPanel.GetDestinationConnectionPoint(this.editedConnector);
if (targetConnPt != null)
{
points = ConnectorRouter.Route(parentPanel, targetConnPt, destConnPt);
this.activeEditPoint.Location = targetConnPt.Location;
}
else
{
points = ConnectorRouter.Route(parentPanel, begin, destConnPt);
}
}
else
{
// We are dragging the destination point of a connector.
ConnectionPoint srcConnPt = FreeFormPanel.GetSourceConnectionPoint(this.editedConnector);
if (targetConnPt != null)
{
points = ConnectorRouter.Route(parentPanel, srcConnPt, targetConnPt);
this.activeEditPoint.Location = targetConnPt.Location;
}
else
{
points = ConnectorRouter.Route(parentPanel, srcConnPt, end);
}
}
//When we start editing the end point we need to clear the slate and start over
List <EditPoint> newEditPoints = new List <EditPoint>();
if (points != null && points.Length > 1)
{
RemoveEditPoints(EditPoint.EditPointTypes.MultiSegmentEditPoint);
for (int i = 1; i < points.Length - 1; ++i)
{
newEditPoints.Add(new EditPoint(EditPoint.EditPointTypes.MultiSegmentEditPoint, points[i]));
}
this.editPoints.InsertRange(1, newEditPoints.ToArray());
}
}
else if (this.activeEditPoint.Type == EditPoint.EditPointTypes.MultiSegmentEditPoint)
{
if (previous != null && previous.Type != EditPoint.EditPointTypes.ConnectionEditPoint && next != null && next.Type != EditPoint.EditPointTypes.ConnectionEditPoint)
{
//Update the previous point
double slopeOfLine = DesignerGeometryHelper.SlopeOfLineSegment(previous.Location, this.activeEditPoint.Location);
Orientation orientation = (Math.Abs(slopeOfLine) < 1) ? Orientation.Horizontal : Orientation.Vertical;
previous.Location = (orientation == Orientation.Horizontal) ? new Point(previous.Location.X, newPoint.Y) : new Point(newPoint.X, previous.Location.Y);
//Update the next point
slopeOfLine = DesignerGeometryHelper.SlopeOfLineSegment(this.activeEditPoint.Location, next.Location);
orientation = (Math.Abs(slopeOfLine) < 1) ? Orientation.Horizontal : Orientation.Vertical;
next.Location = (orientation == Orientation.Horizontal) ? new Point(next.Location.X, newPoint.Y) : new Point(newPoint.X, next.Location.Y);
//Update the current point
this.activeEditPoint.Location = newPoint;
}
else
{
Fx.Assert(false, "Should not be here. UpdateEditPoints failed.");
}
}
}
// Remove all the redundant edit points
RemoveCoincidingEditPoints();
bool validEditPoints = ValidateEditPoints();
Fx.Assert(validEditPoints, "Validating EditPoints failed.");
}
