/// <summary>
/// Add a new performance event
/// </summary>
/// <param name="name">The name of the performance event.</param>
/// <param name="start">Specifies whether or not to start the event immediately.</param>
/// <returns>The newly added event.</returns>
public PerformanceEvent AddEvent(string name, bool start)
{
if(name == null) {
throw new ArgumentNullException("name");
}
PerformanceEvent e = new PerformanceEvent();
e.Name = name;
e.Manager = this;
_events.Add(name, e);
if(start) {
e.Start();
}
return e;
}
private void UpdateEventInfoPanel(PerformanceEvent perfEvent)
{
if(perfEvent == null) {
return;
}
NameLabel.Text = (perfEvent.Name == null || perfEvent.Name == string.Empty) ?
"Untitled" : perfEvent.Name;
IterationLabel.Text = perfEvent.IterationCount.ToString();
// average duration
TimeSpan? avgDuration = perfEvent.AverageDuration;
if(avgDuration.HasValue) {
AvgDurationLabel.Text = FormatTimeSpan(avgDuration.Value);
}
else {
AvgDurationLabel.Text = "None";
}
// maximum duration
if(perfEvent.IterationCount > 0) {
TimeSpan maxDuration = TimeSpan.MinValue;
for(int i = 0; i < perfEvent.IterationCount; i++) {
if(perfEvent.Iterations[i].Duration > maxDuration) {
maxDuration = perfEvent.Iterations[i].Duration;
}
}
MaxDurationLabel.Text = FormatTimeSpan(maxDuration);
}
else {
MaxDurationLabel.Text = "None";
}
}
private bool IsMinDuration(int index, PerformanceEvent perfEvent)
{
if(perfEvent == null || index < 0) {
return false;
}
for(int i = 0; i < eventGraph.Count; i++) {
if(eventGraph[i].IterationCount > index) {
if(eventGraph[i].Iterations[index].Duration < perfEvent.Iterations[index].Duration) {
return false;
}
}
}
return true;
}
private Color GetDrawingColor(PerformanceEvent perfEvent)
{
Color drawingColor;
if(eventGraphColors.ContainsKey(perfEvent)) {
drawingColor = eventGraphColors[perfEvent];
}
else {
// set default
drawingColor = DefaultGraphColor;
}
return drawingColor;
}
private int DrawEventInfo(Graphics g, int maxHeight, int lastInfoDrawn, PerformanceEvent perfEvent,
int currentX, int currentY, int iterationIndex)
{
if(iterationIndex > lastInfoDrawn) {
string info = iterationIndex.ToString();
SizeF infoSize = g.MeasureString(info, this.Font);
float infoX = currentX - infoSize.Width / 2;
float infoY = maxHeight + InfoZoneHeight / 2 - infoSize.Height / 2 + 2;
// draw string
g.DrawString(info, this.Font, Brushes.Black, infoX, infoY);
// prevent redrawing the same info again4
lastInfoDrawn = iterationIndex;
}
if(IsMinDuration(iterationIndex, perfEvent)) {
Pen p = new Pen(Brushes.LightGray);
p.DashStyle = System.Drawing.Drawing2D.DashStyle.DashDot;
g.DrawLine(p, currentX, currentY, currentX, maxHeight);
}
return lastInfoDrawn;
}
private Color DrawAverageBar(Graphics g, int bulletSize, int maxHeight,
PerformanceEvent perfEvent, Color drawingColor)
{
// disable antialiasing while drawing the average line
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.Default;
Pen linePen = new Pen(drawingColor, 1.0f);
int lineY = maxHeight - (int)Math.Ceiling((perfEvent.AverageDuration.Value.TotalMilliseconds / graphMaxDuration) *
(double)(maxHeight - bulletSize / 2));
linePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
g.DrawLine(linePen, 0, lineY, GraphHost.Width, lineY);
// reenable antialiasing
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
return drawingColor;
}
