protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
if (Bars == null || ChartControl == null)
{
return;
}
int barPaintWidth = Math.Max(3, 1 + 2 * ((int)ChartControl.BarWidth - 1) + 2 * shadowWidth);
for (int idx = ChartBars.FromIndex; idx <= ChartBars.ToIndex; idx++)
{
if (idx - Displacement < 0 || idx - Displacement >= BarsArray[0].Count || (idx - Displacement < BarsRequiredToPlot))
{
continue;
}
double valH = HAHigh.GetValueAt(idx);
double valL = HALow.GetValueAt(idx);
double valC = HAClose.GetValueAt(idx);
double valO = HAOpen.GetValueAt(idx);
int x = chartControl.GetXByBarIndex(chartControl.BarsArray[0], idx);
int y1 = chartScale.GetYByValue(valO);
int y2 = chartScale.GetYByValue(valH);
int y3 = chartScale.GetYByValue(valL);
int y4 = chartScale.GetYByValue(valC);
SharpDX.Direct2D1.Brush shadowColordx = shadowColor.ToDxBrush(RenderTarget); // prepare for the color to use
var xy2 = new Vector2(x, y2);
var xy3 = new Vector2(x, y3);
RenderTarget.DrawLine(xy2, xy3, shadowColordx, shadowWidth);
if (y4 == y1)
{
RenderTarget.DrawLine(new Vector2(x - barPaintWidth / 2, y1), new Vector2(x + barPaintWidth / 2, y1), shadowColordx, shadowWidth);
}
else
{
if (y4 > y1)
{
SharpDX.Direct2D1.Brush barColorDowndx = barColorDown.ToDxBrush(RenderTarget); // prepare for the color to use
RenderTarget.FillRectangle(new RectangleF(x - barPaintWidth / 2, y1, barPaintWidth, y4 - y1), barColorDowndx);
barColorDowndx.Dispose();
}
else
{
SharpDX.Direct2D1.Brush barColorUpdx = barColorUp.ToDxBrush(RenderTarget); // prepare for the color to use
RenderTarget.FillRectangle(new RectangleF(x - barPaintWidth / 2, y4, barPaintWidth, y1 - y4), barColorUpdx);
barColorUpdx.Dispose();
}
RenderTarget.DrawRectangle(new RectangleF(x - barPaintWidth / 2 + (float)shadowWidth / 2,
Math.Min(y4, y1), barPaintWidth - (float)shadowWidth, Math.Abs(y4 - y1)), shadowColordx, shadowWidth);
}
shadowColordx.Dispose();
}
}
public override void OnCalculateMinMax()
{
base.OnCalculateMinMax();
if (Bars == null || ChartControl == null)
{
return;
}
for (int idx = ChartBars.FromIndex; idx <= ChartBars.ToIndex; idx++)
{
double tmpHigh = HAHigh.GetValueAt(idx);
double tmpLow = HALow.GetValueAt(idx);
if (tmpHigh != 0 && tmpHigh > MaxValue)
{
MaxValue = tmpHigh;
}
if (tmpLow != 0 && tmpLow < MinValue)
{
MinValue = tmpLow;
}
}
}
protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
base.OnRender(chartControl, chartScale);
BodyWidth = (int)ChartControl.BarWidth + Math.Min(ShadowWidth * 2, 4);
if (ChartBars != null)
{
// loop through all of the viewable range of the chart
for (int barIndex = ChartBars.FromIndex; barIndex <= ChartBars.ToIndex; barIndex++)
{
if (ShadowColor == Brushes.Transparent)
{
if (Close.GetValueAt(barIndex) > Open.GetValueAt(barIndex))
{
DrawLineNT("BarBrushUp",
barIndex,
HAHigh.GetValueAt(barIndex),
barIndex,
Math.Max(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(barIndex)),
ShadowWidth,
chartScale);
DrawLineNT("BarBrushUp",
barIndex,
HALow.GetValueAt(barIndex),
barIndex,
Math.Min(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(barIndex)),
ShadowWidth,
chartScale);
}
else
{
DrawLineNT("BarBrushDown",
barIndex,
HAHigh.GetValueAt(barIndex),
barIndex,
Math.Max(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(barIndex)),
ShadowWidth,
chartScale);
DrawLineNT("BarBrushDown",
barIndex,
HALow.GetValueAt(barIndex),
barIndex,
Math.Min(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(barIndex)),
ShadowWidth,
chartScale);
}
}
else
{
DrawLineNT("ShadowBrush",
barIndex,
HAHigh.GetValueAt(barIndex),
barIndex,
Math.Max(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(ShadowWidth)),
ShadowWidth,
chartScale);
DrawLineNT("ShadowBrush",
barIndex,
HALow.GetValueAt(barIndex),
barIndex,
Math.Min(HAClose.GetValueAt(barIndex), HAOpen.GetValueAt(ShadowWidth)),
ShadowWidth,
chartScale);
}
if (HAClose.GetValueAt(barIndex) > HAOpen.GetValueAt(barIndex))
{
DrawLineNT("BarBrushUp",
barIndex,
HAOpen.GetValueAt(barIndex),
barIndex,
HAClose.GetValueAt(barIndex),
BodyWidth,
chartScale);
}
else
{
DrawLineNT("BarBrushDown",
barIndex,
HAOpen.GetValueAt(barIndex),
barIndex,
HAClose.GetValueAt(barIndex),
BodyWidth,
chartScale);
}
}
// Draw price line if wanted
if (ShowPriceLine)
{
DrawLineNT("PriceLineBrush",
Math.Max(PriceLineLength, CurrentBar - 15),
Close.GetValueAt(CurrentBar),
CurrentBar,
Close.GetValueAt(CurrentBar),
PriceLineWidth,
PriceLineStyle,
chartScale);
DrawStringNT(" -- " + Close.GetValueAt(CurrentBar).ToString() + " = Last Price",
Font,
"PriceTextBrush",
CurrentBar,
Close.GetValueAt(CurrentBar),
"PriceAreaBrush",
chartScale);
}
}
}