protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
var hit = false;
foreach (var node in _nodeLocations)
{
if (OriginToClient(node.Value).Contains(e.Location))
{
if (Selected != null)
{
Invalidate(Selected);
}
Selected = node.Key;
Invalidate(Selected);
OnNodeSelected(EventArgs.Empty);
hit = true;
break;
}
}
if (!hit && Selected != null)
{
Invalidate(Selected);
Selected = null;
OnNodeSelected(EventArgs.Empty);
}
}
private void Invalidate(IExecutionPlanNode node)
{
// Inflate the node rectangle by 1 pixel to allow for antialiasing
var rect = OriginToClient(_nodeLocations[node]);
rect.Inflate(1, 1);
Invalidate(rect);
}
private void SortFetchXmlElements(IExecutionPlanNode node)
{
if (node is FetchXmlScan fetchXml)
{
SortFetchXmlElements(fetchXml.FetchXml.Items);
}
foreach (var source in node.GetSources())
{
SortFetchXmlElements(source);
}
}
private IEnumerable <IExecutionPlanNode> GetAllNodes(IExecutionPlanNode node)
{
foreach (var source in node.GetSources())
{
yield return(source);
foreach (var subSource in GetAllNodes(source))
{
yield return(subSource);
}
}
}
private Size MeasureNode(IExecutionPlanNode node)
{
var label = GetLabel(node);
using (var bitmap = new Bitmap(100, 100))
using (var g = Graphics.FromImage(bitmap))
{
var labelSize = g.MeasureString(label, Font);
const int iconLabelGap = 10;
var width = Math.Max(_iconSize.Width, labelSize.Width);
return(new Size((int)Math.Ceiling(width), _iconSize.Height + iconLabelGap + (int)Math.Ceiling(labelSize.Height)));
}
}
private void LayoutChildren(IExecutionPlanNode parent)
{
var i = 0;
var sourceCount = parent.GetSources().Count();
var parentRect = _nodeLocations[parent];
var parentIconRect = GetIconRect(parentRect);
var lineYSpacing = _iconSize.Height / (sourceCount + 1);
foreach (var child in parent.GetSources())
{
var size = MeasureNode(child);
Point pt;
if (i == 0)
{
// First source stays on the same level as the parent, one step to the right
pt = new Point(parentRect.Right + _offset, parentRect.Top);
}
else
{
// Subsequent nodes move down
pt = new Point(parentRect.Right + _offset, _maxBottom + _offset);
_maxY = pt.Y;
_maxBottom = _maxY + size.Height;
}
var fullRect = new Rectangle(pt, size);
var iconRect = GetIconRect(fullRect);
_nodeLocations[child] = fullRect;
var rows = child is IDataExecutionPlanNode dataChild ? Executed ? dataChild.RowsOut : dataChild.EstimateRowsOut(DataSources.Values.Cast <Engine.DataSource>().ToDictionary(ds => ds.Name, StringComparer.OrdinalIgnoreCase), Options, null) : 1;
var width = rows == 0 ? 1 : (int)Math.Log10(rows);
_lines.Add(new Line {
Source = child, Start = new Point(iconRect.Left, parentIconRect.Top == iconRect.Top ? (parentIconRect.Top + (i + 1) * lineYSpacing) : (iconRect.Top + iconRect.Height / 2)), End = new Point(parentIconRect.Right, parentIconRect.Top + (i + 1) * lineYSpacing), Width = width
});
LayoutChildren(child);
i++;
}
}
private string GetLabel(IExecutionPlanNode node)
{
var text = node.ToString();
if (Executed)
{
var nodeTime = node.Duration.TotalMilliseconds - node.GetSources().Sum(source => source.Duration.TotalMilliseconds);
var totalTime = Plan.Duration.TotalMilliseconds;
var cost = Math.Min(1, Math.Max(0, nodeTime / totalTime));
if (Double.IsNaN(cost))
{
cost = 1;
}
text += "\r\nCost: " + cost.ToString("P0");
}
return(text);
}