public static Bitmap Visualize(EvaluationContext context, TreeStyle style)
{
ComputedNode root = CreateNodes(context);
Bitmap bitmap = new Bitmap(1, 1);
Graphics g = Graphics.FromImage(bitmap);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
root.Measure(g, style);
int titleWidth = (int)(context.Plan.Title == null ? 0 : g.MeasureString(context.Plan.Title, style.TitleFont).Width);
int titleHeight = (int)(context.Plan.Title == null ? 0 : g.MeasureString(context.Plan.Title, style.TitleFont).Height + style.TitleTopMargin + style.TitleBottomMargin);
int imageWidth = (int)(Math.Max(titleWidth, root.Width) + style.LeftMargin + style.RightMargin);
int imageHeight = (int)(root.Height + style.TopMargin + style.BottomMargin + titleHeight);
root.Layout(style, style.LeftMargin + (imageWidth - style.LeftMargin - style.RightMargin - root.Width) / 2, style.TopMargin + titleHeight);
root.PostLayout(style);
g.Dispose();
Bitmap renderedBitmap = new Bitmap(imageWidth, imageHeight);
g = Graphics.FromImage(renderedBitmap);
root.Draw(g, style);
DrawTitle(g, style, context.Plan.Title, imageWidth);
g.Dispose();
return(renderedBitmap);
}
private static ComputedNode CreateNodes(EvaluationContext context)
{
ComputedNode root = null;
List <ComputedNode> computedNodes = new List <ComputedNode>();
foreach (Step step in context.Steps)
{
ComputedNode cn = new ComputedNode()
{
Results = step.OutVariables.Select(i => context.GetValue(i)).ToArray(),
ExpressionImage = step.Image,
Description = step.SourceExpression.Title,
ResultVariableNames = step.OutVariables.ToList(),
Step = step
};
List <Branch> branches = new List <Branch>();
foreach (SourceVariable variable in step.InSourceVariables)
{
branches.Add(new Branch()
{
Node = new VariableNode()
{
Description = variable.Description,
Text = DecoratedText.Create(variable.Name),
Name = variable.Name,
Value = context.GetValue(variable.Name)
}
});
}
/*
* foreach (string variable in step.InTempVariables)
* {
* branches.Add(new Branch() { Node = computedNodes.First(j => j.ResultVariableNames.Contains(variable)) });
* }
*/
foreach (Step fromStep in step.Froms)
{
branches.Add(new Branch()
{
Node = computedNodes.First(j => j.Step == fromStep)
});
}
List <Branch> distinctBranches = new List <Branch>();
foreach (Branch branch in branches)
{
if (!distinctBranches.Any(i => i.Node == branch.Node))
{
distinctBranches.Add(branch);
cn.InheritVariables(branch.Node);
}
}
cn.Branches = distinctBranches.ToList();
computedNodes.Insert(0, cn);
root = cn;
}
return(root);
}
