public void Constructor()
{
var font = new GraphvizFont("TestFont", 12.5f);
Assert.AreEqual("TestFont", font.Name);
Assert.AreEqual(12.5f, font.SizeInPoints);
font = new GraphvizFont("OtherFont", 22.0f);
Assert.AreEqual("OtherFont", font.Name);
Assert.AreEqual(22.0f, font.SizeInPoints);
}
private static void AssertEqual(Font font, GraphvizFont qFont)
{
if (font is null)
{
Assert.IsNull(qFont);
}
else
{
Assert.AreEqual(qFont.Name, font.Name);
Assert.AreEqual(qFont.SizeInPoints, font.SizeInPoints);
}
}
// ReSharper restore UnusedAutoPropertyAccessor.Local
/// <summary>
/// Renders the change details as SVG directed graph.
/// </summary>
/// <param name="renderer">SVG renderer to use.</param>
/// <returns><see cref="XElement"/> containing SVG fragment for adding to browser view.</returns>
public async Task <XElement> RenderSvg(ISvgRenderer renderer)
{
var graph = this.GenerateChangeGraph();
var dotGraph = graph.ToGraphviz(
algorithm =>
{
var font = new GraphvizFont("Arial", 9);
algorithm.CommonVertexFormat.Font = font;
algorithm.CommonEdgeFormat.Font = font;
algorithm.GraphFormat.RankDirection = GraphvizRankDirection.LR;
algorithm.FormatVertex += (sender, args) =>
{
args.VertexFormat.Label = args.Vertex.ToString();
args.VertexFormat.Shape = args.Vertex.Shape;
if (args.Vertex is ResourceVertex rv)
{
args.VertexFormat.Label = rv.Label;
args.VertexFormat.IsHtmlLabel = true;
args.VertexFormat.Style = rv.Style;
args.VertexFormat.FillColor = rv.FillColor;
args.VertexFormat.FontColor = rv.FontColor;
}
};
algorithm.FormatEdge += (sender, args) => { args.EdgeFormat.Label.Value = args.Edge.Tag; };
});
var svg = await renderer.RenderSvg(dotGraph);
if (svg != null)
{
// Now change the width and height attributes of the SVG to 100% so it becomes responsive in bootstrap
if (svg.Attribute("width") != null)
{
svg.Attribute("width").Value = "100%";
}
if (svg.Attribute("height") != null)
{
svg.Attribute("height").Value = "100%";
}
}
return(svg);
}
public void ToGraphvizFont()
{
var font = new Font("Microsoft Sans Serif", 12.5f);
GraphvizFont qFont = font.ToGraphvizFont();
AssertEqual(font, qFont);
font = new Font("Comic Sans MS", 25.0f);
qFont = font.ToGraphvizFont();
AssertEqual(font, qFont);
// ReSharper disable ExpressionIsAlwaysNull
font = null;
qFont = font.ToGraphvizFont();
AssertEqual(font, qFont);
// ReSharper restore ExpressionIsAlwaysNull
}
public static Font ToFont([CanBeNull] this GraphvizFont font)
{
return(font is null ? null : new Font(font.Name, font.SizeInPoints));
}
