public override bool DrawPlot(Layer layer, ChartProperty property, bool onlyUpdateLastBar)
{
AxisX cAxisX = layer.AxisX;
Rectangle cRectY = this.AxisY.AxisRectangle;
Rectangle4 cLayerRect = new Rectangle4(layer.LayerRectangleWithoutAxisY);
__cGDI.SaveDC();
__cGDI.ClipRectangle(layer.LayerRectangleWithoutAxisY);
int iOldMode = __cGDI.SelectTransparent();
IntPtr iOldFont = __cGDI.SelectFont(__cSymbolFont);
IntPtr iOldPen = __cGDI.SelectPen(new PowerLanguage.PenStyle(property.TradeLineColor, 1, (int)__uPattern));
IntPtr iNameFont = __cLegendFont.ToHfont();
if (onlyUpdateLastBar)
{
if (__cPrevTrade != null)
{
DrawTradeInfo(__cPrevTrade, cAxisX, property, iNameFont, cLayerRect, cRectY.Top);
}
}
else
{
this.RefreshAxisY(property);
int iStartIndex = cAxisX.BarNumber;
int iEndIndex = iStartIndex + cAxisX.BarCount - 1;
HashSet <ITrade> cTrades = __cTrades.GetTradeObjects(iStartIndex, iEndIndex);
foreach (ITrade cTrade in cTrades)
{
DrawTradeInfo(cTrade, cAxisX, property, iNameFont, cLayerRect, cRectY.Top);
__cPrevTrade = cTrade;
}
}
__cGDI.RemoveObject(iNameFont);
__cGDI.RemoveObject(__cGDI.SelectPen(iOldPen));
__cGDI.RemoveObject(__cGDI.SelectFont(iOldFont));
if (layer.Drawable)
{
this.DrawLegend(layer.LegendIndex, property);
}
__cGDI.ClearTransparent(iOldMode);
__cGDI.RestoreDC();
return(true);
}
private void DrawTextObject(Layer layer, TextObject textObject, ChartProperty property, bool useROP)
{
AxisX cAxisX = layer.AxisX;
AxisY cAxisY = layer.AxisY;
Rectangle cRectY = cAxisY.AxisRectangle;
int iOldBackground = 0;
IntPtr iOldFont = IntPtr.Zero;
bool bUseBG = textObject.BGColor != property.BackgroundColor;
bool bUseFont = textObject.FontName != property.TextFont.Name || textObject.Size != property.TextFont.Size;
if (bUseBG)
{
iOldBackground = __cGDI.SelectBackground(textObject.BGColor);
}
else
{
iOldBackground = __cGDI.SelectTransparent();
}
if (bUseFont)
{
iOldFont = __cGDI.SelectFont(new Font(textObject.FontName, textObject.Size, textObject.Style));
}
int iX = 0, iY = 0;
ChartPoint cPoint = textObject.Location;
bool bAbsolute = textObject.AbsolutePosition;
if (bAbsolute)
{
iY = cRectY.Y + (int)cPoint.Price;
iX = cPoint.BarNumber.Value;
}
else
{
iY = cRectY.Y + cAxisY.ConvertValueToHeight(cPoint.Price) + 1;
AxisXUnit cUnit = cAxisX.ConvertBarNumberToWidth(cPoint.BarNumber.Value);
Size cSize = __cGDI.MeasureString(textObject.Text);
iY = CalculateYFromStyle(iY, cSize, textObject.VStyle);
iX = CalculateXFromStyle(cUnit.CenterPoint, cSize, textObject.HStyle);
}
Rectangle cLayerRect = layer.LayerRectangleWithoutAxisY;
if (useROP || bAbsolute)
{
__cGDI.BeginRopDraw();
__cGDI.DrawRopString(textObject.Text, textObject.Color, iX, iY);
__cGDI.EndRopDraw();
}
else
{
__cGDI.DrawString(textObject.Text, textObject.Color, iX, iY);
}
if (bUseFont)
{
__cGDI.RemoveObject(__cGDI.SelectFont(iOldFont));
}
if (bUseBG)
{
__cGDI.SelectBackground(iOldBackground);
}
else
{
__cGDI.ClearTransparent(iOldBackground);
}
}
