public ConnectionPoint AddAnotherConnectionPointAt(SideOfShape side, double position)
{
var item = new ConnectionPoint(this, side, position);
_ConnectionPoints.Add(item);
item.AddToSurface(Surface);
return(item);
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
double left = System.Convert.ToDouble(values[0]);
double top = System.Convert.ToDouble(values[1]);
double width = System.Convert.ToDouble(values[2]);
double height = System.Convert.ToDouble(values[3]);
SideOfShape side = (SideOfShape)values[4];
double position = System.Convert.ToDouble(values[5]);
//return bindingStrategy.Convert(left, top, actualWidth, actualHeight);
return(Convert(left, top, width, height, side, position));
}
public Point Convert(double left, double top, double width, double height, SideOfShape side, double position)
{
switch (side)
{
case SideOfShape.Top:
var convert = new Point(left + width * position, top);
return convert;
case SideOfShape.Bottom:
return new Point(left + width * position, top + height);
case SideOfShape.Left:
return new Point(left, top + height * position);
case SideOfShape.Right:
return new Point(left + width, top + height * position);
default:
throw new ArgumentOutOfRangeException();
}
}
public ConnectionPoint(DiagramShape parent, SideOfShape side, double position)
{
UID = Guid.NewGuid().ToString();
Side = side;
Position = position;
ParentShape = parent;
SetBinding(LocationProperty,
CreateLeftTopWidthHeightBinding(parent));
// The Fill property must be set to a Brush in order for the shape to be considered solid.
// Otherwise only the edges are considered part of it.
Fill = Brushes.Transparent;
MouseEnter += ConnectionPoint_MouseEnter;
MouseLeave += ConnectionPoint_MouseLeave;
}
public ConnectionPoint(DiagramShape parent, SideOfShape side, double position)
{
UID = Guid.NewGuid().ToString();
Side = side;
Position = position;
ParentShape = parent;
SetBinding(LocationProperty,
CreateLeftTopWidthHeightBinding(parent));
// The Fill property must be set to a Brush in order for the shape to be considered solid.
// Otherwise only the edges are considered part of it.
Fill = Brushes.Transparent;
MouseEnter += ConnectionPoint_MouseEnter;
MouseLeave += ConnectionPoint_MouseLeave;
}
private static Dictionary <SideOfShape, List <Connection> > GetConnectionsBySide(DiagramShape shape)
{
Dictionary <SideOfShape, List <Connection> > connectionsBySide = new Dictionary <SideOfShape, List <Connection> >();
foreach (SideOfShape side in Enum.GetValues(typeof(SideOfShape)))
{
connectionsBySide[side] = new List <Connection>();
}
// Split connections into groups based on the side they are closest to.
foreach (var connection in shape.Connections)
{
DiagramShape otherShape = connection.Source == shape ? connection.Target : connection.Source;
SideOfShape closestSide = GetClosestSideTo(shape, otherShape);
connectionsBySide[closestSide].Add(connection);
}
return(connectionsBySide);
}
/// <summary>
/// Returns a normalized Vector representing a line parallel to
/// an imaginary wall.
/// _____
/// | . |
/// |_____|
/// The vectors for each side are determined by the line that points
/// clockwise in this diagram.
/// </summary>
/// <param name="side"></param>
/// <returns></returns>
public static Vector LineParallelTo(this SideOfShape side)
{
switch (side)
{
case SideOfShape.Top:
return(new Vector(1, 0));
case SideOfShape.Bottom:
return(new Vector(-1, 0));
case SideOfShape.Left:
return(new Vector(0, -1));
case SideOfShape.Right:
return(new Vector(0, 1));
default:
throw new ArgumentOutOfRangeException();
}
}
public Point Convert(double left, double top, double width, double height, SideOfShape side, double position)
{
switch (side)
{
case SideOfShape.Top:
var convert = new Point(left + width * position, top);
return(convert);
case SideOfShape.Bottom:
return(new Point(left + width * position, top + height));
case SideOfShape.Left:
return(new Point(left, top + height * position));
case SideOfShape.Right:
return(new Point(left + width, top + height * position));
default:
throw new ArgumentOutOfRangeException();
}
}
public Point Convert(DiagramShape shape, SideOfShape side, double position)
{
return(Convert(Canvas.GetLeft(shape), Canvas.GetTop(shape), shape.ActualWidth, shape.ActualHeight,
side, position));
}
public Point Convert(DiagramShape shape, SideOfShape side, double position)
{
return Convert(Canvas.GetLeft(shape), Canvas.GetTop(shape), shape.ActualWidth, shape.ActualHeight,
side, position);
}
private static List <ConnectionPoint> CreateNewConnectionPointsOn(DiagramShape shape, SideOfShape side, int numConnections)
{
var list = new List <ConnectionPoint>();
double spacing = 1.0 / (numConnections + 1);
for (int i = 1; i <= numConnections; i++)
{
var cp = shape.AddAnotherConnectionPointAt(side, spacing * i);
list.Add(cp);
}
return(list);
}
private static Point GetCenterOfSide(DiagramShape shape, SideOfShape side)
{
return(converter.Convert(shape, side, 0.5));
}
public ConnectionPoint AddAnotherConnectionPointAt(SideOfShape side, double position)
{
var item = new ConnectionPoint(this, side, position);
_ConnectionPoints.Add(item);
item.AddToSurface(Surface);
return item;
}
