public StackTree(IEnumerable <SampledProfileTraceData> profileEvents)
{
Root = new StackTreeNode("ROOT");
foreach (var profileEvent in profileEvents)
{
var frames = Program.StackFramesForProfileEvent(profileEvent);
MaxDepth = Math.Max(MaxDepth, frames.Length);
Root.AddStack(frames);
}
}
private string DisplayTextForNode(StackTreeNode node)
{
string weightPct = String.Format("{0:N2}", node.Weight * 100.0 / _totalTreeWeight);
string displayText = $"{node.Frame} ({node.Weight} samples, {weightPct}%)";
displayText = displayText.Replace("<", "<");
displayText = displayText.Replace(">", ">");
displayText = displayText.Replace("&", "&");
displayText = displayText.Replace("\"", """);
return(displayText);
}
private StackTreeNode GetOrCreateChild(string frame)
{
StackTreeNode child;
if (!Children.TryGetValue(frame, out child))
{
child = new StackTreeNode(frame);
Children.Add(frame, child);
}
return(child);
}
private void WriteStackTreeNode(StackTreeNode node, float startX, float startY)
{
float rectWidth = WidthOfRect(node), rectHeight = 20; // TODO
float textX = startX, textY = startY + (rectHeight - _textPadHeight);
float rectX = startX, rectY = startY;
if (rectWidth < _minRectWidth)
{
return;
}
textX += _textPadWidth;
float textWidth = rectWidth - 2 * _textPadWidth;
string displayText = DisplayTextForNode(node);
string rectColor = NameColor(node.Frame);
// Figure out what can fit depending on the fonts
string shownText;
int numChars = (int)(textWidth / _letterWidth);
if (numChars <= 3)
{
shownText = "";
}
else
{
if (numChars < displayText.Length)
{
shownText = displayText.Substring(0, numChars - 3) + "...";
}
else
{
shownText = displayText;
}
}
_output.WriteLine($"<g onmouseover=\"s('{displayText}')\"> onmouseout=\"c()\" onclick=\"zoom(this)\"");
_output.WriteLine($"<title>{displayText}</title>");
_output.WriteLine($"<rect x=\"{rectX}\" y=\"{rectY}\" width=\"{rectWidth}\" height=\"{rectHeight}\" fill=\"{rectColor}\" rx=\"2\" ry=\"2\" />");
_output.WriteLine($"<text text-anchor=\"\" x=\"{textX}\" y=\"{textY}\" font-size=\"{_fontSize}\" font-family=\"{_fontFamily}\" fill=\"rgb(0,0,0)\">{shownText}</text>");
_output.WriteLine("</g>");
var children = node.Children.Values.ToArray();
float currentChildX = startX;
for (int i = 0; i < children.Length; ++i)
{
WriteStackTreeNode(children[i], currentChildX, startY + rectHeight);
currentChildX += WidthOfRect(children[i]); // TODO Add some padding probably
}
}
private float WidthOfRect(StackTreeNode node)
{
return(node.Weight * _width / (1.0f * _totalTreeWeight));
}