public WaveViewerOverlay(CustomWaveViewer p)
{
DoubleBuffered = true;
parent = p;
this.Parent = parent;
ticks = new List <Rectangle>();
posIndicator = new Rectangle(parent.GetWaveformPadding(), 0, 1, (parent.Height * 2) - 25);
selectMarker = new Rectangle(parent.GetWaveformPadding(), 0, 2, (parent.Height * 2) - 25);
loopEndMarker = new Rectangle(-100, 0, 2, (parent.Height * 2) - 25);
loopSection = new Rectangle(-100, 0, 0, (parent.Height * 2) - 25);
}
public void DrawTimestamps()
{
this.Controls.Clear();
ticks.Clear();
int waveformWidth = this.Width - 2 * parent.GetWaveformPadding();
int sampleRate = parent.GetSampleRate();
long startSample = parent.LeftSample;
long endSample = parent.RightSample;
long timespan = endSample - startSample;
double duration = (double)timespan / sampleRate;
List <long> timeStampSamples = new List <long>();
float timeStampSize;
if (duration <= 0.1)
{
timeStampSize = 0.01f;
}
else if (duration > 0.1 && duration <= 0.5)
{
timeStampSize = 0.05f;
}
else if (duration > 0.5 && duration <= 1)
{
timeStampSize = 0.1f;
}
else if (duration > 1 && duration <= 2)
{
timeStampSize = 0.25f;
}
else if (duration > 2 && duration <= 5)
{
timeStampSize = 0.5f;
}
else if (duration > 5 && duration <= 10)
{
timeStampSize = 1;
}
else if (duration > 10 && duration <= 30)
{
timeStampSize = 2;
}
else if (duration > 30 && duration <= 80)
{
timeStampSize = 5;
}
else if (duration > 80 && duration <= 180)
{
timeStampSize = 15;
}
else if (duration > 180 && duration <= 360)
{
timeStampSize = 30;
}
else
{
timeStampSize = 60;
}
int numTimeStamps = (int)Math.Floor(timespan / (sampleRate * timeStampSize));
long endRemainder = endSample % (int)(sampleRate * timeStampSize);
long currentSample = endSample - endRemainder;
timeStampSamples.Add(currentSample);
for (int i = 0; i < numTimeStamps; i++)
{
currentSample -= (int)(sampleRate * timeStampSize);
timeStampSamples.Add(currentSample);
}
for (int i = 0; i < timeStampSamples.Count; i++)
{
double timeStampPos = ((double)timeStampSamples[i] - startSample) / timespan;
double seconds = (double)timeStampSamples[i] / sampleRate;
TimeSpan t = TimeSpan.FromSeconds(seconds);
Label timeStamp = new Label();
timeStamp.TextAlign = ContentAlignment.MiddleCenter;
timeStamp.Top = this.Height - 20;
timeStamp.Left = parent.GetWaveformPadding() + (int)(waveformWidth * 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);
Rectangle primaryTick = new Rectangle(timeStamp.Left + timeStamp.Width / 2, this.Height - 25, 1, 10);
if (ticks.Count > 0)
{
Rectangle secondaryTick = new Rectangle((ticks[i * 2 - 2].X + primaryTick.X) / 2, this.Height - 25, 1, 5);
ticks.Add(secondaryTick);
}
ticks.Add(primaryTick);
}
if (timeStampSamples.Count > 1)
{
if (timeStampSamples[0] - startSample >= (timeStampSamples[1] - timeStampSamples[0]) / 2)
{
Rectangle secondaryTick = new Rectangle(ticks[0].X - (ticks[1].X - ticks[0].X), this.Height - 25, 1, 5);
ticks.Add(secondaryTick);
}
if (endSample - timeStampSamples[timeStampSamples.Count - 1] >= (timeStampSamples[timeStampSamples.Count - 1] - timeStampSamples[timeStampSamples.Count - 2]) / 2)
{
Rectangle secondaryTick = new Rectangle(ticks[ticks.Count - 1].X + (ticks[1].X - ticks[0].X), this.Height - 25, 1, 5);
ticks.Add(secondaryTick);
}
}
}
