static void FillStreamGeometryContext(StreamGeometryContext context, ICurve curve)
{
if (curve == null)
{
return;
}
VEdge.FillContextForICurve(context, curve);
}
void HandleClickForEdge(VEdge vEdge) {
//todo : add a hook
var lgSettings = Graph.LayoutAlgorithmSettings as LgLayoutSettings;
if (lgSettings != null) {
var lgEi = lgSettings.GeometryEdgesToLgEdgeInfos[vEdge.Edge.GeometryEdge];
lgEi.SlidingZoomLevel = lgEi.SlidingZoomLevel != 0 ? 0 : double.PositiveInfinity;
ViewChangeEvent(null, null);
}
}
void SetVEdgeArrowheads(VEdge vEdge, int zIndex) {
if (vEdge.SourceArrowHeadPath != null) {
Panel.SetZIndex(vEdge.SourceArrowHeadPath, zIndex);
_graphCanvas.Children.Add(vEdge.SourceArrowHeadPath);
}
if (vEdge.TargetArrowHeadPath != null) {
Panel.SetZIndex(vEdge.TargetArrowHeadPath, zIndex);
_graphCanvas.Children.Add(vEdge.TargetArrowHeadPath);
}
}
void SetVEdgeLabel(DrawingEdge edge, VEdge vEdge, int zIndex) {
FrameworkElement frameworkElementForEdgeLabel;
if (!drawingObjectsToFrameworkElements.TryGetValue(edge, out frameworkElementForEdgeLabel)) {
drawingObjectsToFrameworkElements[edge] =
frameworkElementForEdgeLabel = CreateTextBlockForDrawingObj(edge);
frameworkElementForEdgeLabel.Tag = new VLabel(edge, frameworkElementForEdgeLabel);
}
vEdge.VLabel = (VLabel) frameworkElementForEdgeLabel.Tag;
if (frameworkElementForEdgeLabel.Parent == null) {
_graphCanvas.Children.Add(frameworkElementForEdgeLabel);
Panel.SetZIndex(frameworkElementForEdgeLabel, zIndex);
}
}
VEdge CreateEdgeForLgCase(LgLayoutSettings lgSettings, DrawingEdge edge) {
return (VEdge) (drawingObjectsToIViewerObjects[edge] = new VEdge(edge, lgSettings) {
PathStrokeThicknessFunc = () => GetBorderPathThickness()*edge.Attr.LineWidth
});
}
VEdge CreateEdge(DrawingEdge edge, LgLayoutSettings lgSettings) {
lock (this) {
if (drawingObjectsToIViewerObjects.ContainsKey(edge))
return (VEdge) drawingObjectsToIViewerObjects[edge];
if (lgSettings != null)
return CreateEdgeForLgCase(lgSettings, edge);
FrameworkElement labelTextBox;
drawingObjectsToFrameworkElements.TryGetValue(edge, out labelTextBox);
var vEdge = new VEdge(edge, labelTextBox);
var zIndex = ZIndexOfEdge(edge);
drawingObjectsToIViewerObjects[edge] = vEdge;
if (edge.Label != null)
SetVEdgeLabel(edge, vEdge, zIndex);
Panel.SetZIndex(vEdge.CurvePath, zIndex);
_graphCanvas.Children.Add(vEdge.CurvePath);
SetVEdgeArrowheads(vEdge, zIndex);
return vEdge;
}
}
