internal IEnumerable <KeyValuePair <string, Color> > GetNodeColors()
{
var depths = new Dictionary <string, Color>();
foreach (var node in this.nodes)
{
var brush = GraphResources.NodeColor(node.NodeIndex);
depths.Add(node.Identifier, brush.Color);
}
return(depths);
}
private void RefreshGraphNodes(SynthesizedGraph graph)
{
var parentCanvas = this.ParentCanvas;
parentCanvas.Width = parentCanvas.Height = 0;
if (graph == null || (graph.Nodes.Any() == false))
{
return; // There is no graph or it's an empty graph.
}
var drawingContext = nodeVisuals.RenderOpen();
var textBrush = GraphResources.Brush(GraphResources.BrushIndex.NodeTextColor);
// Font for use on node text.
string fontResourceUri = "./Resources/Fonts/#Open Sans";
string pack = System.IO.Packaging.PackUriHelper.UriSchemePack;
var uri = new Uri(pack + "://application:,,,/Bloodstone.Net;component/");
var textFontFamily = new FontFamily(uri, fontResourceUri);
var typeface = new Typeface(textFontFamily, FontStyles.Normal,
FontWeights.Normal, FontStretches.Normal);
Rect boundingBox = graph.Nodes.ElementAt(0).Rect;
foreach (var node in graph.Nodes)
{
var rect = node.Rect;
boundingBox.Union(rect);
var bi = GraphResources.BrushIndex.NodeBorderColor;
var bp = new Pen(GraphResources.Brush(bi), 1.0);
rect.Offset(-0.5, -0.5);
var fi = GraphResources.NodeColor(node.NodeIndex);
drawingContext.DrawRectangle(fi, bp, rect);
FormattedText ft = new FormattedText(node.Name, CultureInfo.CurrentCulture,
FlowDirection.LeftToRight, typeface, 10.0, textBrush)
{
Trimming = TextTrimming.CharacterEllipsis,
TextAlignment = TextAlignment.Center
};
rect = DeflateRectForText(ft, rect);
drawingContext.DrawText(ft, rect.Location);
}
drawingContext.Close(); // Done drawing, commit changes.
boundingBox.Inflate(Config.HorzGap, Config.VertGap);
parentCanvas.Width = boundingBox.Width;
parentCanvas.Height = boundingBox.Height;
}
private void RenderSliderBackground(ScrollChangedEventArgs e)
{
var drawingContext = this.sliderBackground.RenderOpen();
var fillBrush = GraphResources.Brush(GraphResources.BrushIndex.SliderFill);
var edgeBrush = GraphResources.Brush(GraphResources.BrushIndex.SliderEdge);
var height = ParentCanvas.ActualHeight - 1.0;
var edgeWidth = (Config.HorzGap + (0.5 * Config.NodeWidth));
var sliderWidth = e.ExtentWidth - edgeWidth - edgeWidth;
// Fill the entire slider region with slider fill brush.
Rect sliderRegion = new Rect(0.5 + edgeWidth, 0.5, sliderWidth, height);
drawingContext.DrawRectangle(fillBrush, null, sliderRegion);
drawingContext.Close();
}
private void RefreshGraphEdges(SynthesizedGraph graph)
{
if (graph == null || (graph.Edges.Any() == false))
{
return; // There is no graph or it has no edges.
}
var nodes = graph.Nodes;
var edgeData = new List <Tuple <int, Point, Point> >();
foreach (var edge in graph.Edges)
{
var startNode = nodes.First(n => n.Identifier == edge.StartNodeId);
var endNode = nodes.First(n => n.Identifier == edge.EndNodeId);
edgeData.Add(new Tuple <int, Point, Point>(startNode.NodeIndex,
startNode.GetOutputPoint(edge.StartIndex),
endNode.GetInputPoint(edge.EndIndex)));
}
// Edge outline in darker color (before drawing the fill).
var eb = GraphResources.Brush(GraphResources.BrushIndex.EdgeOutlineColor);
var drawingContext = edgeVisuals.RenderOpen();
foreach (var data in edgeData)
{
PathGeometry pathGeometry = new PathGeometry();
PathFigure pathFigure = new PathFigure()
{
StartPoint = data.Item2
};
AddBezier(pathFigure, data.Item2, data.Item3);
pathGeometry.Figures.Add(pathFigure);
var pb = GraphResources.NodeColor(data.Item1);
drawingContext.DrawGeometry(null, new Pen(eb, 3.5), pathGeometry);
drawingContext.DrawGeometry(null, new Pen(pb, 1.5), pathGeometry);
var jointPen = new Pen(eb, 1.0);
drawingContext.DrawEllipse(pb, jointPen, data.Item2, 4.0, 4.0);
drawingContext.DrawEllipse(pb, jointPen, data.Item3, 4.0, 4.0);
}
drawingContext.Close();
}
