public void DrawTimeAxis()
{
this.Controls.Clear();
this.Controls.Add(lblTimeFreqPoint);
timeTicks.Clear();
timeLabels.Clear();
float projectionWidth = this.Width - SpectrogramViewer.PADDING_LEFT;
double[] timeEnds = parent.GetTimeEndsInView();
if (timeEnds == null)
{
return;
}
long startMilliseconds = (long)timeEnds[0];
long endMilliseconds = (long)timeEnds[1];
if (startMilliseconds == endMilliseconds)
{
return;
}
long timespan = endMilliseconds - startMilliseconds;
List <long> timeStampSamples = new List <long>();
int timeStampSize;
if (timespan <= 100)
{
timeStampSize = 10;
}
else if (timespan > 100 && timespan <= 500)
{
timeStampSize = 50;
}
else if (timespan > 500 && timespan <= 1000)
{
timeStampSize = 100;
}
else if (timespan > 1000 && timespan <= 2000)
{
timeStampSize = 250;
}
else if (timespan > 2000 && timespan <= 5000)
{
timeStampSize = 500;
}
else if (timespan > 5000 && timespan <= 10000)
{
timeStampSize = 1000;
}
else if (timespan > 10000 && timespan <= 30000)
{
timeStampSize = 2000;
}
else if (timespan > 30000 && timespan <= 80000)
{
timeStampSize = 5000;
}
else if (timespan > 80000 && timespan <= 180000)
{
timeStampSize = 15000;
}
else if (timespan > 180000 && timespan <= 360000)
{
timeStampSize = 30000;
}
else
{
timeStampSize = 60000;
}
int numTimeStamps = (int)(timespan / timeStampSize);
long endRemainder = endMilliseconds % timeStampSize;
long currentMilliseconds = endMilliseconds - endRemainder;
timeStampSamples.Add(currentMilliseconds);
for (int i = 0; i < numTimeStamps; i++)
{
currentMilliseconds -= timeStampSize;
timeStampSamples.Add(currentMilliseconds);
}
for (int i = 0; i < timeStampSamples.Count; i++)
{
double timeStampPos = (double)(timeStampSamples[i] - startMilliseconds) / timespan;
double seconds = (double)timeStampSamples[i] / 1000;
TimeSpan t = TimeSpan.FromSeconds(seconds);
Label timeStamp = new Label();
timeStamp.TextAlign = ContentAlignment.MiddleCenter;
timeStamp.Top = this.Height - 20;
timeStamp.Left = SpectrogramViewer.PADDING_LEFT + (int)(projectionWidth * timeStampPos) - timeStamp.Width / 2;
timeStamp.Text = t.ToString(@"m\:ss\:fff");
timeStamp.Font = new Font(Form1.fonts.Families[0], 7.8F, FontStyle.Regular, GraphicsUnit.Point);
this.Controls.Add(timeStamp);
timeLabels.Add(timeStamp);
Rectangle primaryTick = new Rectangle(timeStamp.Left + timeStamp.Width / 2, this.Height - 25, 1, 10);
if (timeTicks.Count > 0)
{
Rectangle secondaryTick = new Rectangle((timeTicks[i * 2 - 2].X + primaryTick.X) / 2, this.Height - 25, 1, 5);
timeTicks.Add(secondaryTick);
}
timeTicks.Add(primaryTick);
}
if (timeStampSamples.Count > 1)
{
if (timeStampSamples[0] - startMilliseconds >= (timeStampSamples[1] - timeStampSamples[0]) / 2)
{
Rectangle secondaryTick = new Rectangle(timeTicks[0].X - (timeTicks[1].X - timeTicks[0].X), this.Height - 25, 1, 5);
timeTicks.Add(secondaryTick);
}
if (endMilliseconds - timeStampSamples[timeStampSamples.Count - 1] >= (timeStampSamples[timeStampSamples.Count - 1] - timeStampSamples[timeStampSamples.Count - 2]) / 2)
{
Rectangle secondaryTick = new Rectangle(timeTicks[timeTicks.Count - 1].X + (timeTicks[1].X - timeTicks[0].X), this.Height - 25, 1, 5);
timeTicks.Add(secondaryTick);
}
}
}
