public override void UpdateEdge(bool updateLabel = true)
{
if (!ShowArrows)
{
if (EdgePointerForTarget != null)
{
EdgePointerForTarget?.Hide();
EdgePointerForTarget = null;
}
if (EdgePointerForSource != null)
{
EdgePointerForSource?.Hide();
EdgePointerForSource = null;
}
}
base.UpdateEdge(updateLabel);
if (((VisualEdge)Edge).Edge.Weight == null)
{
EdgeLabelControl?.Hide();
}
else
{
EdgeLabelControl?.Show();
}
}
public override void Clean()
{
Source = null;
Target = null;
Edge = null;
RootArea = null;
HighlightBehaviour.SetIsHighlightEnabled(this, false);
DragBehaviour.SetIsDragEnabled(this, false);
Linegeometry = null;
LinePathObject = null;
SelfLoopIndicator = null;
EdgeLabelControls.ForEach(l => l.Dispose());
EdgeLabelControls.Clear();
if (EdgePointerForSource != null)
{
EdgePointerForSource.Dispose();
EdgePointerForSource = null;
}
if (EdgePointerForTarget != null)
{
EdgePointerForTarget.Dispose();
EdgePointerForTarget = null;
}
EventOptions?.Clean();
}
public override void Clean()
{
//TODO rename to _sourceWatcher _targetWatcher
if (_sourceWatcher != null)
{
_sourceWatcher.Dispose();
}
if (_targetWatcher != null)
{
_targetWatcher.Dispose();
}
if (Source != null)
{
Source.PositionChanged -= source_PositionChanged;
}
if (Target != null)
{
Target.PositionChanged -= source_PositionChanged;
}
_oldSource = _oldTarget = null;
Source = null;
Target = null;
Edge = null;
RootArea = null;
HighlightBehaviour.SetIsHighlightEnabled(this, false);
DragBehaviour.SetIsDragEnabled(this, false);
_linegeometry = null;
LinePathObject = null;
SelfLoopIndicator = null;
if (EdgeLabelControl != null)
{
EdgeLabelControl.Dispose();
EdgeLabelControl = null;
}
if (EdgePointerForSource != null)
{
EdgePointerForSource.Dispose();
EdgePointerForSource = null;
}
if (EdgePointerForTarget != null)
{
EdgePointerForTarget.Dispose();
EdgePointerForTarget = null;
}
if (EventOptions != null)
{
EventOptions.Clean();
}
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
if (!ShowArrows)
{
// Hide arrow
EdgePointerForSource?.Hide();
EdgePointerForTarget?.Hide();
// Force line length to connect source/target
_linegeometry = new PathGeometry(new[]
{
new PathFigure(Source.GetCenterPosition(), new [] {
new LineSegment(Target.GetCenterPosition(), isStroked: true)
}, closed: false)
});
LinePathObject.Data = _linegeometry;
}
}
/// <summary>
///
/// </summary>
/// <param name="updateLabel"></param>
public override void UpdateEdge(bool updateLabel = true)
{
// TODO Need to let the styling come through for the paths!
base.UpdateEdge(updateLabel);
// Template not loaded yet?
if (path == null)
{
return;
}
var bezier = new BezierSegment();
var geometry = new PathGeometry();
var figure = new PathFigure();
figure.Segments.Add(bezier);
geometry.Figures.Add(figure);
// Find the output slot
DependencyObject slot = null;
if (SourceSlot != null)
{
if (((NodeVertexControl)Source).Connectors.TryGetValue(SourceSlot, out slot))
{
var container = (UIElement)VisualTreeHelper.GetChild(Source, 0);
var offset = ((UIElement)slot).TransformToAncestor(container).Transform(new Point(0, 0));
var location = Source.GetPosition() + (Vector)offset;
var halfsize = new Vector((double)slot.GetValue(FrameworkElement.WidthProperty) * 0.8,
(double)slot.GetValue(FrameworkElement.HeightProperty) / 2.0);
figure.SetCurrentValue(PathFigure.StartPointProperty, location + halfsize);
//figure.StartPoint = location + halfsize;
}
else
{
// Somehow the slot is not loaded yet
// Let's wait for a change in the Connectors collection and trigger UpdateEdge() again
((NodeVertexControl)Source).Connectors.CollectionChanged -= UpdateSourceConnectors;
((NodeVertexControl)Source).Connectors.CollectionChanged += UpdateSourceConnectors;
Visibility = Visibility.Collapsed;
return;
}
}
// Find input slot
if (TargetSlot != null)
{
if (((NodeVertexControl)Target).Connectors.TryGetValue(TargetSlot, out slot))
{
var container = (UIElement)VisualTreeHelper.GetChild(Target, 0);
var offset = ((UIElement)slot).TransformToAncestor(container).Transform(new Point(0, 0));
var location = Target.GetPosition() + (Vector)offset;
//
var halfsize = new Vector((double)slot.GetValue(FrameworkElement.WidthProperty) * 0.2,
(double)slot.GetValue(FrameworkElement.HeightProperty) / 2.0);
bezier.SetCurrentValue(BezierSegment.Point3Property, location + halfsize);
//bezier.Point3 = location + halfsize;
}
else
{
((NodeVertexControl)Target).Connectors.CollectionChanged -= UpdateTargetConnectors;
((NodeVertexControl)Target).Connectors.CollectionChanged += UpdateTargetConnectors;
Visibility = Visibility.Collapsed;
return;
}
}
// Make sure that even if link is going backward, it still goes out of the block in the proper direction
var length = Math.Max(Math.Abs(bezier.Point3.X - figure.StartPoint.X), 120.0f);
var curvature = length * 0.4;
bezier.SetCurrentValue(BezierSegment.Point1Property, new Point(figure.StartPoint.X + curvature, figure.StartPoint.Y));
//bezier.Point1 = new Point(figure.StartPoint.X + curvature, figure.StartPoint.Y);
bezier.SetCurrentValue(BezierSegment.Point2Property, new Point(bezier.Point3.X - curvature, bezier.Point3.Y));
//bezier.Point2 = new Point(bezier.Point3.X - curvature, bezier.Point3.Y);
//
path.Data = geometry;
var direction = bezier.Point3 - bezier.Point2;
if (direction.Length > MathUtil.ZeroToleranceDouble)
{
direction.Normalize();
}
else
{
direction = new Vector(0, 0);
}
EdgePointerForTarget?.Update(bezier.Point3, direction, EdgePointerForTarget.NeedRotation ? (-MathHelper.GetAngleBetweenPoints(bezier.Point3, bezier.Point2).ToDegrees()) : 0);
//arrow.Data = new PathGeometry { Figures = { GeometryHelper.GenerateOldArrow(bezier.Point2, bezier.Point3) } };
// TODO Should I be doing this here??? should I be uing setcurrentvalue??
Visibility = Visibility.Visible;
}