/// <summary>
/// Adds new internal point to the junction.
/// </summary>
/// <param name="position">position where new point is added</param>
/// <param name="index">index where new point is inserted in <see cref="Points"/> collection</param>
public void BreakLine(Point position, int index)
{
if (AutoPosModeOnly)
{
return;
}
JunctionPoint newPoint = new JunctionPoint(XCaseCanvas)
{
Junction = this,
OrderInJunction = index
};
XCaseCanvas.Children.Add(newPoint);
if (SourceElement == TargetElement)
{
newPoint.SnapTo(SourceElement as DragThumb, true);
}
//newPoint.SetPreferedPosition(position.X - (newPoint.ReferentialElement != null ? newPoint.ReferentialElement.CanvasPosition.X : 0), position.Y - (newPoint.ReferentialElement != null ? newPoint.ReferentialElement.CanvasPosition.Y : 0));
newPoint.SetPreferedPosition(position.X, position.Y);
Canvas.SetZIndex(newPoint, Canvas.GetZIndex(this) + 1);
for (int i = index; i < Points.Count; i++)
{
Points[i].OrderInJunction++;
}
Points.Insert(newPoint.OrderInJunction, newPoint);
//only re-rendering is not enough, whole geometry must be invalidated...
InvalidateGeometry();
UpdateLayout();
}
/// <summary>
/// Changes the <see cref="TargetElement"/> from current target element to
/// <paramref name="targetElement"/>
/// </summary>
/// <param name="targetElement">new target element.</param>
internal void ReconnectTargetElement(IConnectable targetElement)
{
if (targetElement == TargetElement)
{
return;
}
if (Points.Count < 2 /*|| EndPoint.Parent == null*/)
{
return;
}
if (TargetElement != null)
{
TargetElement.SizeChanged -= TargetElement_SizeChanged;
((IConnectable)TargetElement).UnHighlight();
TargetElement = null;
}
Points.RemoveAt(Points.Count - 1);
TargetElement = (Control)targetElement;
((IConnectable)TargetElement).Highlight();
JunctionPoint endPoint = targetElement.CreateJunctionEnd();
endPoint.Junction = this;
endPoint.OrderInJunction = 1;
endPoint.ContextMenu = null;
Points.Add(endPoint);
//TargetElement.SizeChanged += TargetElement_SizeChanged;
Cursor = Cursors.Hand;
InvalidateGeometry();
}
/// <summary>
/// Creates <see cref="JunctionPoint"/> on a specific position.
/// </summary>
/// <param name="preferedPosition">The prefered position for a new JunctionPoint</param>
/// <returns>new <see cref="JunctionPoint"/></returns>
public virtual JunctionPoint CreateJunctionEnd(Point preferedPosition)
{
JunctionPoint junctionEnd = CreateJunctionEnd();
junctionEnd.SetPreferedPosition(preferedPosition);
createdJunctionEnds.Add(junctionEnd);
return(junctionEnd);
}
/// <summary>
/// Creates <see cref="JunctionPoint"/>.
/// </summary>
/// <returns>new <see cref="JunctionPoint"/></returns>
public virtual JunctionPoint CreateJunctionEnd()
{
JunctionPoint junctionEnd = new JunctionPoint(XCaseCanvas)
{
OwnerControl = this, Placement = EPlacementKind.ParentAutoPos, ParentControl = this
};
((Canvas)connectorDecorator.Template.FindName("ConnectorDecoratorGrid", connectorDecorator)).Children.Add(junctionEnd);
Canvas.SetZIndex(junctionEnd, System.Windows.Controls.Canvas.GetZIndex(connectorDecorator) + 10);
junctionEnd.Visibility = Visibility.Visible;
createdJunctionEnds.Add(junctionEnd);
return(junctionEnd);
}
/// <summary>
/// Draws junction between <paramref name="c1"/> and <paramref name="endPoint"/>. This method is supposed
/// to be used when connection is dragged between two elements (one of them is <paramref name="c1"/>)
/// and <paramref name="endPoint"/> is being dragged "on the way" to the second element.
/// </summary>
/// <param name="c1">connected element</param>
/// <param name="endPoint">dragged point</param>
/// <param name="canvas">canvas where the junction is created</param>
internal void DragConnection(IConnectable c1, JunctionPoint endPoint, XCaseCanvas canvas)
{
SourceElement = c1 as Control;
JunctionPoint startPoint = c1.CreateJunctionEnd();
startPoint.Junction = this;
startPoint.OrderInJunction = 0;
endPoint.Junction = this;
endPoint.OrderInJunction = 1;
Points.Add(startPoint);
Points.Add(endPoint);
TargetElement = null;
}
/// <summary>
/// Finalizes dragging of a line segment.
/// </summary>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs"/> that contains the event data. The event data reports that the mouse button was released.</param>
/// <seealso cref="AutoPosModeOnly"/>
protected override void OnMouseUp(MouseButtonEventArgs e)
{
if (segmentDragging)
{
segmentDragging = false;
JunctionPointCommand.PointMoveDataDictionary pointMoveDataCollection =
new JunctionPointCommand.PointMoveDataDictionary();
foreach (KeyValuePair <DragThumb, rPoint> pair in startPositions)
{
JunctionPoint junctionPoint = (JunctionPoint)pair.Key;
if (junctionPoint.Position == pair.Value)
{
continue;
}
JunctionPointCommand.PointMoveData data = new JunctionPointCommand.PointMoveData
{
Index = junctionPoint.OrderInJunction,
OldPosition = pair.Value,
NewPosition =
new rPoint(junctionPoint.Position)
{
tag = junctionPoint.Placement
},
};
if (!pointMoveDataCollection.ContainsKey(viewHelperPointsCollection))
{
pointMoveDataCollection[viewHelperPointsCollection] = new List <JunctionPointCommand.PointMoveData>();
}
pointMoveDataCollection[viewHelperPointsCollection].Add(data);
}
if (pointMoveDataCollection.Count > 0)
{
JunctionPointCommand junctionPointCommand =
(JunctionPointCommand)JunctionPointCommandFactory.Factory().Create(XCaseCanvas.Controller);
junctionPointCommand.Action = JunctionPointCommand.EJunctionPointAction.MovePoints;
junctionPointCommand.PointMoveDataCollection = pointMoveDataCollection;
junctionPointCommand.Description = CommandDescription.MOVE_JUNCTION_SEGMENT;
junctionPointCommand.Execute();
}
}
this.ReleaseMouseCapture();
base.OnMouseUp(e);
}
/// <summary>
/// Override of <see cref="DragThumb.AdjustDrag" /> aligns dragged point to the borders of its <see cref="OwnerControl"/>
/// </summary>
/// <param name="deltaEventArgs"></param>
protected override void AdjustDrag(ref DragDeltaEventArgs deltaEventArgs)
{
base.AdjustDrag(ref deltaEventArgs);
if (OwnerControl != null)
{
Rect bounds = OwnerControl.GetBounds();
Point p = new Point(CanvasPosition.X + deltaEventArgs.HorizontalChange, CanvasPosition.Y + deltaEventArgs.VerticalChange);
Point snapped = bounds.SnapPointToRectangle(p);
deltaEventArgs = new DragDeltaEventArgs(snapped.X - CanvasPosition.X, snapped.Y - CanvasPosition.Y);
}
else
{
JunctionPoint rightNeighbour = Junction.Points.ElementAtOrDefault(OrderInJunction + 1);
JunctionPoint leftNeighbour = Junction.Points.ElementAtOrDefault(OrderInJunction - 1);
const double SNAP_RATIO = 14;
foreach (JunctionPoint neighbour in new[] { leftNeighbour, rightNeighbour })
{
bool isEndPoint = neighbour == Junction.StartPoint || neighbour == Junction.EndPoint;
if (neighbour != null && (!isEndPoint || neighbour.Placement == EPlacementKind.AbsoluteSubCanvas))
{
double nx = neighbour.CanvasPosition.X;
double ny = neighbour.CanvasPosition.Y;
double deltax = deltaEventArgs.HorizontalChange;
double deltay = deltaEventArgs.VerticalChange;
double diff;
if (ShouldSnap(MousePoint.Y, ny, SNAP_RATIO, out diff))
{
ShouldSnap(CanvasPosition.Y + deltaEventArgs.VerticalChange, ny, SNAP_RATIO, out diff);
deltay += diff;
deltaEventArgs = new DragDeltaEventArgs(deltax, deltay);
}
else if (ShouldSnap(MousePoint.X, nx, SNAP_RATIO, out diff))
{
ShouldSnap(CanvasPosition.X + deltaEventArgs.HorizontalChange, nx, SNAP_RATIO, out diff);
deltax += diff;
deltaEventArgs = new DragDeltaEventArgs(deltax, deltay);
}
}
}
}
}
/// <summary>
/// Changes the <see cref="TargetElement"/> from current target element to
/// <paramref name="newEndPoint"/>
/// </summary>
/// <param name="newEndPoint">new end point</param>
internal void ReconnectTargetElement(JunctionPoint newEndPoint)
{
if (TargetElement != null)
{
TargetElement.SizeChanged -= TargetElement_SizeChanged;
((IConnectable)TargetElement).UnHighlight();
TargetElement = null;
}
if (EndPoint.Parent != null)
{
((Canvas)EndPoint.Parent).Children.Remove(EndPoint);
}
Points.RemoveAt(Points.Count - 1);
newEndPoint.Junction = this;
newEndPoint.OrderInJunction = Points.Count;
Points.Add(newEndPoint);
Cursor = Cursors.Arrow;
InvalidateGeometry();
}
/// <summary>
/// Dragging beggins, the <paramref name="item"/> will be the source of the connection.
/// </summary>
/// <param name="item">item clicked</param>
/// <param name="e">event arguments</param>
public override void SelectableItemPreviewMouseDown(ISelectable item, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Right)
{
Canvas.State = ECanvasState.Normal;
e.Handled = true;
return;
}
base.SelectableItemPreviewMouseDown(item, e);
if (item is IConnectable && e.ChangedButton == MouseButton.Left)
{
Canvas.CaptureMouse();
foreach (ISelectable i in Canvas.SelectedItems)
{
i.IsSelected = false;
}
Canvas.SelectedItems.Clear();
draggedPoint = new JunctionPoint(Canvas)
{
Width = 0, Height = 0
};
Canvas.Children.Add(draggedPoint);
draggedPoint.SetPreferedPosition(e.GetPosition(Canvas));
SetZIndex(draggedPoint, -5);
draggedPoint.Visibility = Visibility.Visible;
//throw new NotImplementedException("Method or operation is not implemented.");
draggedConnection = new XCaseJunction(Canvas);
draggedPoint.Junction = draggedConnection;
(item as IConnectable).Highlight();
InConnectionDrag = true;
draggedConnection.DragConnection(item as IConnectable, draggedPoint, Canvas);
Canvas.Children.Add(draggedConnection);
draggedConnection.EndCapStyle = JunctionGeometryHelper.GetCap(DraggedConnectionType);
e.Handled = true;
draggedConnection.InvalidateGeometry();
ConnectableItemMouseEnter((IConnectable)item);
}
}
/// <summary>
/// Drags the completed.
/// </summary>
/// <param name="finalPoint">The final point.</param>
/// <param name="totalShift">The total shift.</param>
protected virtual void DragCompleted(Point finalPoint, Vector totalShift)
{
if (visualAidsAdorner != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(XCaseCanvas);
adornerLayer.Remove(visualAidsAdorner);
visualAidsAdorner = null;
}
if (DragStartPoint != finalPoint)
{
DiagramController controller = XCaseCanvas.Controller;
MacroCommand <DiagramController> moveMacroCommand =
MacroCommandFactory <DiagramController> .Factory().Create(controller);
moveMacroCommand.Description = CommandDescription.MOVE_MACRO;
JunctionPointCommand.PointMoveDataDictionary pointMoveDataCollection = null;
foreach (KeyValuePair <DragThumb, rPoint> pair in startPositions)
{
if (pair.Key is IAlignable)
{
IAlignable element = (IAlignable)pair.Key;
DragThumb dragThumb = element as DragThumb;
double _x;
double _y;
if (dragThumb != null && dragThumb.Placement == EPlacementKind.RelativeCanvas)
{
_x = dragThumb.Left - dragThumb.ReferentialElement.CanvasPosition.X;
_y = dragThumb.Top - dragThumb.ReferentialElement.CanvasPosition.Y;
}
else
{
_x = element.Left;
_y = element.Top;
}
CommandBase command = ViewController.CreateMoveCommand(
_x,
_y,
element.ViewHelper,
controller);
moveMacroCommand.Commands.Add(command);
}
else if (pair.Key is JunctionPoint)
{
JunctionPoint junctionPoint = (JunctionPoint)pair.Key;
JunctionPointCommand.PointMoveData data = new JunctionPointCommand.PointMoveData
{
Index = junctionPoint.OrderInJunction,
OldPosition = pair.Value,
NewPosition = new rPoint(junctionPoint.Position)
{
tag = junctionPoint.Placement
},
};
if (pointMoveDataCollection == null)
{
pointMoveDataCollection = new JunctionPointCommand.PointMoveDataDictionary();
}
if (!pointMoveDataCollection.ContainsKey(junctionPoint.Junction.viewHelperPointsCollection))
{
pointMoveDataCollection[junctionPoint.Junction.viewHelperPointsCollection] = new List <JunctionPointCommand.PointMoveData>();
}
pointMoveDataCollection[junctionPoint.Junction.viewHelperPointsCollection].Add(data);
}
}
// add one command for each affected junction
if (pointMoveDataCollection != null)
{
JunctionPointCommand junctionPointCommand = (JunctionPointCommand)JunctionPointCommandFactory.Factory().Create(controller);
junctionPointCommand.Action = JunctionPointCommand.EJunctionPointAction.MovePoints;
junctionPointCommand.PointMoveDataCollection = pointMoveDataCollection;
junctionPointCommand.Description = CommandDescription.MOVE_JUNCTION_POINTS;
moveMacroCommand.Commands.Add(junctionPointCommand);
}
moveMacroCommand.Execute();
if (Dropped != null)
{
Dropped();
}
}
}
/// <summary>
/// If mouse is over a connectable item, <see cref="DraggedConnectionProcessor"/>'s
/// <see cref="IDraggedConnectionProcessor.DragConnectionCompleted"/> handler is called
/// to finilize the operation. Otherwise nothing happens.
/// </summary>
/// <param name="e"></param>
public override void OnMouseUp(MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Right)
{
Canvas.State = ECanvasState.Normal;
e.Handled = true;
return;
}
base.OnMouseUp(e);
Canvas.ReleaseMouseCapture();
InConnectionDrag = false;
Mouse.SetCursor(Cursors.Arrow);
if (draggedConnection != null)
{
if (draggedConnection.SourceElement != null)
{
((IConnectable)draggedConnection.SourceElement).UnHighlight();
}
if (draggedConnection.TargetElement != null)
{
((IConnectable)draggedConnection.TargetElement).UnHighlight();
}
draggedConnection.DeleteFromCanvas();
if (DraggedConnectionProcessor != null)
{
Element sourceElement = null;
Element targetElement = null;
if (draggedConnection.SourceElement is XCaseViewBase)
{
sourceElement = ((XCaseViewBase)draggedConnection.SourceElement).ModelElement;
}
if (draggedConnection.TargetElement is XCaseViewBase)
{
targetElement = ((XCaseViewBase)draggedConnection.TargetElement).ModelElement;
}
if (draggedConnection.SourceElement != null && ItemDraggedOver == draggedConnection.SourceElement)
{
targetElement = sourceElement;
}
if (draggedConnection.SourceElement is PIM_Class && draggedConnection.TargetElement is AssociationDiamond)
{
targetElement = ((PIM_Class)draggedConnection.SourceElement).ModelElement;
sourceElement = ((AssociationDiamond)draggedConnection.TargetElement).Association.Association;
}
if (draggedConnection.SourceElement is AssociationDiamond && draggedConnection.TargetElement is PIM_Class)
{
targetElement = ((PIM_Class)draggedConnection.TargetElement).ModelElement;
sourceElement = ((AssociationDiamond)draggedConnection.SourceElement).Association.Association;
}
DraggedConnectionProcessor.DragConnectionCompleted(sourceElement, targetElement);
ItemDraggedOver = (IConnectable)draggedConnection.TargetElement;
}
}
draggedConnection = null;
Canvas.Children.Remove(draggedPoint);
draggedPoint = null;
}
