protected double ParseT(double d, bool IncludeOffset)
{
ConvertEventArgsEx e = new ConvertEventArgsEx(d, typeof(double), IncludeOffset);
if (TempParser != null)
TempParser(this, e);
return (double)e.Value;
}
protected override void OnPaint(PaintEventArgs e)
{
Graphics gfx = e.Graphics;
Pen axisPen = new Pen(this.ForeColor);
Brush textBrush = new SolidBrush(this.ForeColor);
StringFormat sfmt = new StringFormat();
sfmt.Alignment = StringAlignment.Center;
sfmt.LineAlignment = StringAlignment.Near;
RectangleF plotRect = PlotRect(gfx);
gfx.SmoothingMode = SmoothingMode.None; //Axes look worse when AA'd.
//Then: Draw the axes:
//(For now, we will simply draw lines without arrows - to be upgraded in future.)
gfx.DrawLine(axisPen, new PointF(plotRect.Left, plotRect.Bottom), new PointF(plotRect.Right, plotRect.Bottom));
gfx.DrawLine(axisPen, new PointF(plotRect.Left, plotRect.Bottom), new PointF(plotRect.Left, plotRect.Top));
#region X-axis
{
FormatterParserProvider prov = null;
if (!string.IsNullOrEmpty(m_sXUnits) && m_Formatters != null && m_Formatters.ContainsKey(m_sXUnits))
prov = m_Formatters[m_sXUnits];
//Determine if we can fit (MaxChecks) into the graph:
ConvertEventArgs ceaMaxX = new ConvertEventArgs(m_dMaxXValue, typeof(double));
if (prov != null) prov.Formatter(this, ceaMaxX);
string s = ((double)ceaMaxX.Value).ToString("0");
float sWidth = gfx.MeasureString(s, this.Font).Width;
int maxPossibleChecks = (int)(plotRect.Width / sWidth) + 1;
int numChecks = maxPossibleChecks > m_nMaxChecks ? m_nMaxChecks : maxPossibleChecks;
bool labelChecks = numChecks > 1;
if (numChecks < 2) numChecks = 2;
float XFact = plotRect.Width / (numChecks - 1);
double XFact2 = Range / (numChecks - 1);
for (int i = 0; i < numChecks; i++)
{
PointF checkTop = new PointF(plotRect.Left + XFact * i, plotRect.Bottom);
PointF checkBottom = new PointF(checkTop.X, checkTop.Y + m_nCheckSize);
gfx.DrawLine(axisPen, checkTop, checkBottom);
if (labelChecks)
{
ConvertEventArgs val = new ConvertEventArgs(m_dMinXValue + XFact2 * i, typeof(double));
if (prov != null)
prov.Formatter(this, val);
string label = ((double)val.Value).ToString("0");
PointF textTop = new PointF(checkBottom.X, checkBottom.Y + m_nSpacer);
gfx.DrawString(label, Font, textBrush, textTop, sfmt);
}
}
if (m_sXLabel != null && !string.IsNullOrEmpty(m_sXLabel.Trim()))
{
PointF textTop = new PointF((plotRect.Left + plotRect.Right) / 2,
plotRect.Bottom + m_nCheckSize + 2 * m_nSpacer + gfx.MeasureString("fg", Font).Height);
string units = prov != null ? " (" + prov.CurrentCnv + ")" : "";
gfx.DrawString(m_sXLabel + units, Font, textBrush, textTop, sfmt);
}
}
#endregion X-Axis
#region Y-Axis
GraphSeries selectedSeries = null;
foreach (GraphSeries gs in m_Datasets)
if (gs.Selected)
{
selectedSeries = gs; break;
}
if (m_bDrawYLabel && selectedSeries != null && !float.IsNaN(selectedSeries.Min) && !float.IsNaN(selectedSeries.Max)
&&!float.IsInfinity(selectedSeries.Min) && !float.IsInfinity(selectedSeries.Max))
{
FormatterParserProvider prov = null;
if (!string.IsNullOrEmpty(selectedSeries.Units))
prov = m_Formatters[selectedSeries.Units];
Brush textBrush2 = new SolidBrush(selectedSeries.DefaultColour);
Pen yAxisPen = new Pen(textBrush2);
sfmt.Alignment = StringAlignment.Far;
sfmt.LineAlignment = StringAlignment.Center;
float maxTextWidth = 0;
if (selectedSeries.Logarithmic)
#region Logarithmic
{
if (selectedSeries.Min == selectedSeries.Max)
{
PointF checkRight = new PointF(plotRect.Left, (plotRect.Bottom + plotRect.Top) / 2);
PointF checkLeft = new PointF(checkRight.X - m_nCheckSize, checkRight.Y);
gfx.DrawLine(yAxisPen, checkRight, checkLeft);
ConvertEventArgsEx val = new ConvertEventArgsEx(selectedSeries.Min, typeof(float), false);
if (prov != null) prov.Formatter(this, val);
string label = ((float)val.Value).ToString("G2");
PointF textRight = new PointF(checkLeft.X - m_nSpacer, checkLeft.Y);
maxTextWidth = gfx.MeasureString(label, Font).Width;
gfx.DrawString(label, Font, textBrush2, textRight, sfmt);
} //Single Check
else
{
float graphMin = selectedSeries.Min * selectedSeries.Max > 0 ? selectedSeries.Min : selectedSeries.Max * 1E-6f;
ConvertEventArgsEx ceaGraphMin = new ConvertEventArgsEx(graphMin, typeof(double), false);
if (prov != null) prov.Formatter(this, ceaGraphMin);
bool seriesNegative = graphMin < 0;
ConvertEventArgs ceaMin = new ConvertEventArgsEx(seriesNegative ? -selectedSeries.Max : graphMin, typeof(double), false);
if (prov != null) prov.Formatter(this, ceaMin);
int min = (int)Math.Floor(Math.Log10((double)ceaMin.Value));
ConvertEventArgs ceaMax = new ConvertEventArgsEx(seriesNegative ? -graphMin : selectedSeries.Max, typeof(double), false);
if (prov != null) prov.Formatter(this, ceaMax);
int max = (int)Math.Floor(Math.Log10((double)ceaMax.Value));
for (int i = max; i > min; i--)
{
if (!seriesNegative && Math.Pow(10, i) < (double)ceaGraphMin.Value)
continue;
else if (seriesNegative && -Math.Pow(10, i) < (double)ceaGraphMin.Value)
continue;
float y = plotRect.Bottom - plotRect.Height * (float)((i - Math.Log10((seriesNegative ? -1 : 1) * (double)ceaGraphMin.Value)) / Math.Log10((double)ceaMax.Value / (double)ceaGraphMin.Value));
PointF checkRight = new PointF(plotRect.Left, y);
PointF checkLeft = new PointF(checkRight.X - m_nCheckSize, checkRight.Y);
gfx.DrawLine(yAxisPen, checkRight, checkLeft);
string label = (seriesNegative ? "-" : "") + "10^" + i;
PointF textRight = new PointF(checkLeft.X - m_nSpacer, checkLeft.Y);
gfx.DrawString(label, Font, textBrush2, textRight, sfmt);
float f = gfx.MeasureString(label, Font).Width;
if (f > maxTextWidth)
maxTextWidth = f;
}
}
}
#endregion Logarithmic
else
#region Linear
{
double SeriesRange = selectedSeries.Max - selectedSeries.Min;
float sHeight = gfx.MeasureString("0", this.Font).Height;
int maxPossibleChecks = (int)(plotRect.Height / sHeight) + 1;
int numChecks = maxPossibleChecks > m_nMaxChecks ? m_nMaxChecks : maxPossibleChecks;
bool labelChecks = numChecks > 1;
if (numChecks < 2) numChecks = 2;
float YFact = plotRect.Height / (numChecks - 1);
double YFact2 = SeriesRange / (numChecks - 1);
if (SeriesRange != 0)
{
for (int i = 0; i < numChecks; i++)
{
PointF checkRight = new PointF(plotRect.Left, plotRect.Bottom - YFact * i);
PointF checkLeft = new PointF(checkRight.X - m_nCheckSize, checkRight.Y);
gfx.DrawLine(yAxisPen, checkRight, checkLeft);
if (labelChecks)
{
//G2 seems to love to show 100 as 1E2...
ConvertEventArgs ceaVal = new ConvertEventArgs(selectedSeries.Min + YFact2 * i, typeof(double));
if (prov != null) prov.Formatter(this, ceaVal);
double val = (double)ceaVal.Value;
string label;
if (Math.Abs(val) < 10000 && Math.Abs(val) > 10)
label = val.ToString("F0");
else
label = val.ToString("G2");
PointF textRight = new PointF(checkLeft.X - m_nSpacer, checkLeft.Y);
gfx.DrawString(label, Font, textBrush2, textRight, sfmt);
float f = gfx.MeasureString(label, Font).Width;
if (f > maxTextWidth)
maxTextWidth = f;
}
}
}
else //Draw one check in the centre...
{
PointF checkRight = new PointF(plotRect.Left, (plotRect.Bottom + plotRect.Top) / 2);
PointF checkLeft = new PointF(checkRight.X - m_nCheckSize, checkRight.Y);
gfx.DrawLine(yAxisPen, checkRight, checkLeft);
ConvertEventArgs ceaVal = new ConvertEventArgs(selectedSeries.Min, typeof(double));
if (prov != null) prov.Formatter(this, ceaVal);
double val = (double)ceaVal.Value;
string label;
if (Math.Abs(val) < 10000 && Math.Abs(val) > 10)
label = val.ToString("F0");
else
label = val.ToString("G2");
PointF textRight = new PointF(checkLeft.X - m_nSpacer, checkLeft.Y);
gfx.DrawString(label, Font, textBrush2, textRight, sfmt);
maxTextWidth = gfx.MeasureString(label, Font).Width;
}
}
#endregion Linear
if (m_bDrawYLabel)
{
StringFormat ylblFmt = new StringFormat();
ylblFmt.Alignment = StringAlignment.Center;
ylblFmt.LineAlignment = StringAlignment.Far;
float left = plotRect.Left - m_nCheckSize - 2 * m_nSpacer - maxTextWidth;
if (left - gfx.MeasureString("0", Font).Height > 0)
{
gfx.TranslateTransform(left, (plotRect.Bottom + plotRect.Top) / 2);
gfx.RotateTransform(-90);
string units = prov != null ? " (" + prov.CurrentCnv + ")" : "";
gfx.DrawString(selectedSeries.Name + units, Font, textBrush2, 0, 0, ylblFmt);
gfx.ResetTransform();
}
}
}
#endregion Y-Axis
gfx.SmoothingMode = SmoothingMode.AntiAlias;
//First: Draw the unselected items:
foreach (GraphSeries d in m_Datasets)
if (!d.Selected)
DrawDataSet(d, gfx, plotRect, 2 * m_Datasets.IndexOf(d));
//Then, draw the selected items:
foreach (GraphSeries d in m_Datasets)
if (d.Selected)
DrawDataSet(d, gfx, plotRect, 2 * m_Datasets.IndexOf(d));
base.OnPaint(e);
}
