internal VNode(Node node, FrameworkElement frameworkElementOfNodeForLabelOfLabel,
Func <Edge, VEdge> funcFromDrawingEdgeToVEdge, Func <double> pathStrokeThicknessFunc)
{
PathStrokeThicknessFunc = pathStrokeThicknessFunc;
Node = node;
FrameworkElementOfNodeForLabel = frameworkElementOfNodeForLabelOfLabel;
_funcFromDrawingEdgeToVEdge = funcFromDrawingEdgeToVEdge;
CreateNodeBoundaryPath();
if (FrameworkElementOfNodeForLabel != null)
{
FrameworkElementOfNodeForLabel.Tag = this; //get a backpointer to the VNode
Common.PositionFrameworkElement(FrameworkElementOfNodeForLabel, node.GeometryNode.Center, 1);
Panel.SetZIndex(FrameworkElementOfNodeForLabel, Panel.GetZIndex(BoundaryPath) + 1);
}
SetupSubgraphDrawing();
Node.Attr.VisualsChanged += (a, b) => Invalidate();
Node.IsVisibleChanged += obj => {
foreach (var frameworkElement in FrameworkElements)
{
frameworkElement.Opacity = Node.IsVisible ? 1 : 0;
}
};
}
void SetupCollapseSymbol()
{
var collapseBorderSize = GetCollapseBorderSymbolSize();
Debug.Assert(collapseBorderSize > 0);
_collapseButtonBorder = new Border {
Background = Common.BrushFromMsaglColor(_subgraph.CollapseButtonColorInactive),
Width = collapseBorderSize,
Height = collapseBorderSize,
CornerRadius = new CornerRadius(collapseBorderSize / 2)
};
Panel.SetZIndex(_collapseButtonBorder, Panel.GetZIndex(BoundaryPath) + 1);
var collapseButtonCenter = GetCollapseButtonCenter(collapseBorderSize);
Common.PositionFrameworkElement(_collapseButtonBorder, collapseButtonCenter, 1);
double w = collapseBorderSize * 0.4;
_collapseSymbolPath = new Path {
Data = CreateCollapseSymbolPath(collapseButtonCenter + new Point(0, -w / 2), w),
Stroke = _collapseSymbolPathInactive,
StrokeThickness = 1
};
Panel.SetZIndex(_collapseSymbolPath, Panel.GetZIndex(_collapseButtonBorder) + 1);
_topMarginRect.PointerPressed += (s, e) =>
TopMarginRectMouseLeftButtonDown(e);
}
internal void CreateNodeBoundaryPath()
{
if (FrameworkElementOfNodeForLabel != null)
{
var center = Node.GeometryNode.Center;
var margin = 2 * Node.Attr.LabelMargin;
var bc = NodeBoundaryCurves.GetNodeBoundaryCurve(Node,
FrameworkElementOfNodeForLabel
.Width + margin,
FrameworkElementOfNodeForLabel
.Height + margin);
bc.Translate(center);
}
BoundaryPath = new Path {
Data = CreatePathFromNodeBoundary(), Tag = this
};
Panel.SetZIndex(BoundaryPath, ZIndex);
SetFillAndStroke();
if (Node.Label != null)
{
ToolTipService.SetToolTip(BoundaryPath, Node.LabelText);
if (FrameworkElementOfNodeForLabel != null)
{
ToolTipService.SetToolTip(FrameworkElementOfNodeForLabel, Node.LabelText);
}
}
}
void SetZIndexAndMouseInteractionsForTopMarginRect()
{
_topMarginRect.PointerEntered +=
(a, b) => {
_collapseButtonBorder.Background =
Common.BrushFromMsaglColor(_subgraph.CollapseButtonColorActive);
_collapseSymbolPath.Stroke = new SolidColorBrush(Colors.Black);
};
_topMarginRect.PointerReleased +=
(a, b) => {
_collapseButtonBorder.Background = Common.BrushFromMsaglColor(_subgraph.CollapseButtonColorInactive);
_collapseSymbolPath.Stroke = new SolidColorBrush(Colors.Silver);
};
Panel.SetZIndex(_topMarginRect, int.MaxValue);
}
