protected override void OnPaint(PaintEventArgs e)
{
try
{
SpectrumData spec = this.spectrum;
if (spec != null)
{
float h;
spec.Translate();
if (ShowGrid)
{
for (int i = baseline; i > TOP_MARGIN; i -= 12)
{
if (i > greenZone)
{
e.Graphics.DrawLine(Styles.SpectrumGreenPen, leftMargin, i, rightMargin, i);
}
else if (i > yellowZone)
{
e.Graphics.DrawLine(Styles.SpectrumYellowPen, leftMargin, i, rightMargin, i);
}
else
{
e.Graphics.DrawLine(Styles.SpectrumRedPen, leftMargin, i, rightMargin, i);
}
}
}
h = Math.Min(scale, spec.LeftVUTranslated * gainTimesScale);
e.Graphics.FillRectangle(leftBrush, leftMargin, baseline - h, vuPixels, h);
h = Math.Min(scale, spec.RightVUTranslated * gainTimesScale);
e.Graphics.FillRectangle(rightBrush, leftMargin + vuPixels + CHANNEL_MARGIN, baseline - h, vuPixels, h);
for (int i = 0; i < spec.NumBandsTranslated; i++)
{
h = Math.Min(scale, spec.LeftSpectrumTranslated[i] * gainTimesScale);
e.Graphics.FillRectangle(leftBrush, bandPosn[i], baseline - h, bandPixels, h);
h = Math.Min(scale, spec.RightSpectrumTranslated[i] * gainTimesScale);
e.Graphics.FillRectangle(rightBrush, bandPosn[i] + rightChannelOffset, baseline - h, bandPixels, h);
}
// PEAK LINES
h = baseline - Math.Min(scale, spec.LeftVUPeak * gainTimesScale);
e.Graphics.DrawLine(Styles.SpectrumPeakPen, leftMargin, h, leftMargin + vuPixels - 1, h);
h = baseline - Math.Min(scale, spec.RightVUPeak * gainTimesScale);
e.Graphics.DrawLine(Styles.SpectrumPeakPen, leftMargin + vuPixels + CHANNEL_MARGIN, h, leftMargin + vuPixels + vuPixels + CHANNEL_MARGIN - 1, h);
for (int i = 0; i < spec.NumBandsTranslated; i++)
{
h = baseline - Math.Min(scale, spec.LeftSpectrumPeak[i] * gainTimesScale);
e.Graphics.DrawLine(Styles.SpectrumPeakPen, bandPosn[i], h, bandPosn[i] + bandPixels - 1, h);
h = baseline - Math.Min(scale, spec.RightSpectrumPeak[i] * gainTimesScale);
e.Graphics.DrawLine(Styles.SpectrumPeakPen, bandPosn[i] + bandPixels + 1, h, bandPosn[i] + rightChannelOffsetPeak, h);
}
if (!spectrumRectangle.Contains(e.ClipRectangle))
{
// FREQUENCY MARKERS
for (int i = 0; i < freqMarkers.Length; i++)
{
TextRenderer.DrawText(e.Graphics,
freqMarkers[i],
Styles.FontSmall,
freqMarkerPositions[i],
Color.White,
tff);
}
// DB MARKERS
for (int i = 0; i < dbMarkers.Length; i++)
{
TextRenderer.DrawText(e.Graphics,
dbMarkers[i],
Styles.FontSmall,
dbMarkerPositions[i],
Color.White,
tffr);
}
}
}
}
catch { }
}
private void createSpectrumData()
{
spectrum = new SpectrumData(spectrumSampleSize / 2, (float)(output.Frequency / 2), spectrumMode);
}