/// <summary>
/// </summary>
/// <param name="graphics"></param>
/// <param name="bounds"></param>
/// <param name="min"></param>
/// <param name="max"></param>
public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
{
if (Bars == null || ChartControl == null)
{
return;
}
// plot error if data not complete
if (textBrush.Color != ChartControl.AxisColor || textFont != ChartControl.Font)
{
textBrush.Color = ChartControl.AxisColor;
textFont = ChartControl.Font;
SizeF errorSize = graphics.MeasureString(errorData, textFont);
errorTextWidth = errorSize.Width + 5;
errorTextHeight = errorSize.Height + 5;
}
if (priorDayHLC == HLCCalculationMode.CalcFromIntradayData)
{
DateTime lastBarDate = (Bars.Count == 0) ? Cbi.Globals.MaxDate : ChartControl.EquidistantBars ?
Bars.GetTime(Math.Min(Bars.Count - 1, ChartControl.LastBarPainted)).Date
: Bars.GetTime(Math.Min(Bars.Count - 1, Bars.GetBar(ChartControl.LastBarTimePainted))).Date;
if ((lastBarDate == Cbi.Globals.MaxDate) ||
(Bars.BarsType.BuiltFrom == PeriodType.Minute &&
((pivotRangeType == PivotRange.Monthly && Bars.Count > 0 && Bars.GetTime(0).AddSeconds(-1).Date >= new DateTime(lastBarDate.Year, lastBarDate.Month, 1).AddMonths(-1)) ||
(pivotRangeType == PivotRange.Weekly && Bars.Count > 0 && Bars.GetTime(0).AddSeconds(-1).Date >= lastBarDate.AddDays(-(((int)lastBarDate.DayOfWeek) + 1) % 7).AddDays(-7)) ||
(pivotRangeType == PivotRange.Daily && Bars.Count > 0 && Bars.GetTime(0).AddSeconds(-1).Date >= lastBarDate.AddDays(-1)))) ||
(Bars.BarsType.BuiltFrom != PeriodType.Minute &&
((pivotRangeType == PivotRange.Monthly && Bars.Count > 0 && Bars.GetTime(0).Date >= new DateTime(lastBarDate.Year, lastBarDate.Month, 1).AddMonths(-1)) ||
(pivotRangeType == PivotRange.Weekly && Bars.Count > 0 && Bars.GetTime(0).Date >= lastBarDate.AddDays(-(((int)lastBarDate.DayOfWeek) + 1) % 7).AddDays(-7)) ||
(pivotRangeType == PivotRange.Daily && Bars.Count > 0 && Bars.GetTime(0).Date >= lastBarDate.AddDays(-1)))))
{
graphics.DrawString(errorData, ChartControl.Font, textBrush, bounds.X + bounds.Width - errorTextWidth, bounds.Y + bounds.Height - errorTextHeight, stringFormatNear);
}
}
else if (priorDayHLC == HLCCalculationMode.DailyBars && existsHistDailyData)
{
DateTime lastBarDate = (dailyBars.Count == 0) ? Cbi.Globals.MaxDate : ChartControl.EquidistantBars ?
dailyBars.GetTime(Math.Min(dailyBars.Count - 1, ChartControl.LastBarPainted)).Date
: dailyBars.GetTime(Math.Min(dailyBars.Count - 1, dailyBars.GetBar(ChartControl.LastBarTimePainted))).Date;
if ((lastBarDate == Cbi.Globals.MaxDate) ||
(pivotRangeType == PivotRange.Monthly && dailyBars.GetTime(0).Date >= new DateTime(lastBarDate.Year, lastBarDate.Month, 1).AddMonths(-1)) ||
(pivotRangeType == PivotRange.Weekly && dailyBars.GetTime(0).Date >= lastBarDate.AddDays(-(((int)lastBarDate.DayOfWeek) + 1) % 7).AddDays(-7)) ||
(pivotRangeType == PivotRange.Daily && dailyBars.GetTime(0).Date >= lastBarDate.AddDays(-1)))
{
graphics.DrawString(errorData, ChartControl.Font, textBrush, bounds.X + bounds.Width - errorTextWidth, bounds.Y + bounds.Height - errorTextHeight, stringFormatNear);
}
}
float textHeight = ChartControl.Font.GetHeight();
for (int seriesCount = 0; seriesCount < Values.Length; seriesCount++)
{
SolidBrush brush = brushes[seriesCount];
int firstBarIdxToPaint = -1;
int lastX = -1;
int lastY = -1;
SmoothingMode oldSmoothingMode = graphics.SmoothingMode;
Gui.Chart.Plot plot = Plots[seriesCount];
DataSeries series = (DataSeries)Values[seriesCount];
for (int i = newSessionBarIdxArr.Count - 1; i >= 0; i--)
{
int prevSessionBreakIdx = (int)newSessionBarIdxArr[i];
if (prevSessionBreakIdx <= this.LastBarIndexPainted)
{
firstBarIdxToPaint = prevSessionBreakIdx;
break;
}
}
using (GraphicsPath path = new GraphicsPath())
{
if (brush.Color != plot.Pen.Color)
{
brush = new SolidBrush(plot.Pen.Color);
}
for (int idx = this.LastBarIndexPainted; idx >= Math.Max(this.FirstBarIndexPainted, this.LastBarIndexPainted - Width); idx--)
{
if (idx - Displacement < 0 || idx - Displacement >= Bars.Count || (!ChartControl.ShowBarsRequired && idx - Displacement < BarsRequired))
{
continue;
}
else if (!series.IsValidPlot(idx))
{
continue;
}
if (idx < firstBarIdxToPaint)
{
break;
}
double val = series.Get(idx);
int x = ChartControl.GetXByBarIdx(BarsArray[0], idx);
int y = ChartControl.GetYByValue(this, val);
if (lastX >= 0)
{
if (y != lastY) // Problem here is, that last bar of old day has date of new day
{
y = lastY;
}
path.AddLine(lastX - plot.Pen.Width / 2, lastY, x - plot.Pen.Width / 2, y);
}
lastX = x;
lastY = y;
}
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.DrawPath(plot.Pen, path);
graphics.SmoothingMode = oldSmoothingMode;
graphics.DrawString(plot.Name, ChartControl.Font, brush, lastX, lastY - textHeight / 2, stringFormatFar);
}
}
}
//
// This Plot() method has been tweaked so it will color in two different colors
// in-between the two plots of Values[3] and Values[4].
//
public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
{
base.Plot(graphics, bounds, min, max);
if (Bars == null || ChartControl == null)
{
return;
}
SolidBrush brush; // Set current brush color here.
SolidBrush brushUP = new SolidBrush(Color.FromArgb(bandAreaColorOpacity * 20, bandAreaColorUp));
SolidBrush brushDOWN = new SolidBrush(Color.FromArgb(bandAreaColorOpacity * 20, bandAreaColorDown));
int barWidth = ChartControl.ChartStyle.GetBarPaintWidth(ChartControl.BarWidth);
SmoothingMode oldSmoothingMode = graphics.SmoothingMode;
GraphicsPath path = new GraphicsPath();
DataSeries series0 = (DataSeries)Values[0]; // Color in between these two plots.
DataSeries series1 = (DataSeries)Values[1];
brush = brushUP; // Start with the upwards color.
int barcount = 0; // Start with leftmost bar.
bool firstbar = true; // Plotting the first bar.
while (barcount < ChartControl.BarsPainted) // Continue until all bars have been painted.
{
int count = 0; // Counter for innner loop.
for (int seriesCount = 0; seriesCount < 2; seriesCount++)
{
int lastX = -1;
int lastY = -1;
DataSeries series = (DataSeries)Values[seriesCount];
Gui.Chart.Plot plot = Plots[seriesCount];
for (count = barcount; count < ChartControl.BarsPainted; count++)
{
int idx = ChartControl.LastBarPainted - ChartControl.BarsPainted + 1 + count;
if (idx < 0 || idx >= Input.Count || (!ChartControl.ShowBarsRequired && idx < BarsRequired))
{
continue;
}
double val = series.Get(idx); // Get next y-value to be plotted.
if (val == 0) // If nothing to plot...
{
continue; // ...ignore the enrtry.
}
int x = (int)(ChartControl.CanvasRight - ChartControl.BarMarginRight - barWidth / 2
+ (count - ChartControl.BarsPainted + 1) * ChartControl.BarSpace) + 1;
int y = (int)((bounds.Y + bounds.Height) - ((val - min) / Gui.Chart.ChartControl.MaxMinusMin(max, min)) * bounds.Height);
double val0 = series0.Get(idx);
double val1 = series1.Get(idx);
if (((val0 > val1) && (brush != brushUP)) || // Now going in wrong direction?
((val0 < val1) && (brush != brushDOWN)))
{ // Yes. Done with this loop.
if (lastX >= 0) // Was there a last point?
{ // Yes. Connect it to the position half-way to this one.
path.AddLine(lastX - plot.Pen.Width / 2, lastY, (x + lastX - plot.Pen.Width) / 2, (lastY + y) / 2);
// Plot vertex of cross-over of the lines (1/2 way point).
}
break; // Done, exit inner loop to change color.
}
if (firstbar == false) // Is this the first plotted bar of the chart?
{ // No. Plot all bars after the first one.
if (count == barcount) // First bar after direction change (and color swap)?
{ // Yes. Add line segment for cross-over, 1/2 bar back.
double valm1 = series.Get(idx - 1); // Get prior y-value to be plotted.
lastX = x - ChartControl.BarSpace / 2; // Back up 1/2 a bar for x-value.
lastY = (y + (int)((bounds.Y + bounds.Height) - ((valm1 - min) / Gui.Chart.ChartControl.MaxMinusMin(max, min)) * bounds.Height)) / 2;
}
path.AddLine(lastX - plot.Pen.Width / 2, lastY, x - plot.Pen.Width / 2, y); // Connect last point to this one.
}
firstbar = false; // No longer the first bar.
lastX = x; // Save current position for next time, so we can connect the dots.
lastY = y;
}
path.Reverse(); // Go back the other direction.
}
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.FillPath(brush, path);
path.Reset(); // Eliminate points already colored.
barcount = count; // Get ready to process next segment.
brush = (brush == brushUP) ? brushDOWN : brushUP; // Switch colors for next segment.
}
graphics.SmoothingMode = oldSmoothingMode; // Restore smoothing mode before exiting.
}
