Support Board

#include "sierrachart.h"

SCSFExport scsf_BG_ColorAndTrailingStop(SCStudyInterfaceRef sc)
{
  SCSubgraphRef BullishLine = sc.Subgraph[0];
  SCSubgraphRef BearishLine = sc.Subgraph[1];
  SCSubgraphRef Trend = sc.Subgraph[2];
  SCSubgraphRef BackgroundColor = sc.Subgraph[3];
  SCSubgraphRef BarColor = sc.Subgraph[4];
  SCSubgraphRef ATR = sc.Subgraph[5];

  SCInputRef TrendLength = sc.Input[0];
  SCInputRef Factor = sc.Input[1];
  SCInputRef ColorType = sc.Input[2];

  if (sc.SetDefaults)
  {
    sc.AutoLoop = 1;
    sc.FreeDLL = 0;
    sc.GraphName = "Color Background";
    sc.GraphRegion = 0;

    // Graphs

    BullishLine.Name = "Bullish Line";
    BullishLine.DrawStyle = DRAWSTYLE_LINE_SKIP_ZEROS;
    BullishLine.PrimaryColor = COLOR_DODGERBLUE;
    BullishLine.LineWidth = 3;

    BearishLine.Name = "Bearish Line";
    BearishLine.DrawStyle = DRAWSTYLE_LINE_SKIP_ZEROS;
    BearishLine.PrimaryColor = COLOR_MAGENTA;
    BearishLine.LineWidth = 3;

    Trend.Name = "Trend";
    Trend.DrawStyle = DRAWSTYLE_IGNORE;
    Trend.SecondaryColorUsed = true;
    Trend.PrimaryColor = COLOR_GREEN;
    Trend.SecondaryColor = COLOR_RED;
    Trend.DrawZeros = false;

    BackgroundColor.Name = "Background Color";
    BackgroundColor.SecondaryColorUsed = true;
    BackgroundColor.PrimaryColor = COLOR_GREEN;
    BackgroundColor.SecondaryColor = COLOR_RED;
    BackgroundColor.DrawZeros = false;

    BarColor.Name = "Bar Color";
    BarColor.DrawStyle = DRAWSTYLE_COLOR_BAR;
    BarColor.PrimaryColor = COLOR_DODGERBLUE;
    BarColor.SecondaryColor = COLOR_RED;
    BarColor.SecondaryColorUsed = true;

    // Inputs

    TrendLength.Name = "Trend Length";
    TrendLength.SetInt(20);

    Factor.Name = "Factor";
    Factor.SetDouble(1.5);

    ColorType.Name = "Color Background or Color Bars?";
    ColorType.SetCustomInputStrings("No;Color Background;Color Bars");
    ColorType.SetCustomInputIndex(0);

    return;
  }

  double& carryForward = sc.GetPersistentDouble(0);
  double& result = sc.GetPersistentDouble(1);
  int& swing = sc.GetPersistentInt(0);

  if (sc.Index < TrendLength.GetInt())
  {
    swing = 1;

    if (ColorType.GetIndex() == 1)
      BackgroundColor.DrawStyle = DRAWSTYLE_BACKGROUND_TRANSPARENT;
    else if (ColorType.GetIndex() == 2)
      BackgroundColor.DrawStyle = DRAWSTYLE_IGNORE;

    return;
  }

  sc.ATR(sc.BaseDataIn, ATR, TrendLength.GetInt(), MOVAVGTYPE_SIMPLE);

  double num = Factor.GetDouble() * ATR[sc.Index];

  if (swing == 1 && sc.Close[sc.Index] <= result)
  {
    swing = -1;
    result = DBL_MAX;
  }
  else if (swing == -1 && sc.Close[sc.Index] >= result)
  {
    swing = 1;
    result = DBL_MIN;
  }
  if (swing == 1)
  {
    if (sc.Low[sc.Index] - carryForward > result)
      result = sc.Low[sc.Index] - carryForward;

    BullishLine[sc.Index] = result;
    Trend[sc.Index] = swing;

    // Color Bullish
    Trend.DataColor[sc.Index] = Trend.PrimaryColor;

    if (ColorType.GetIndex() == 1)
    {
      BackgroundColor[sc.Index] = swing;
      BackgroundColor.DataColor[sc.Index] = BackgroundColor.PrimaryColor;
    }

    else if (ColorType.GetIndex() == 2)
    {
      BarColor[sc.Index] = swing;
      BarColor.DataColor[sc.Index] = BarColor.PrimaryColor;
    }
  }
  else if (swing == -1)
  {
    if (sc.High[sc.Index] + carryForward < result)
      result = sc.High[sc.Index] + carryForward;

    BearishLine[sc.Index] = result;
    Trend[sc.Index] = swing;

    // Color Bearish
    Trend.DataColor[sc.Index] = Trend.SecondaryColor;

    if (ColorType.GetIndex() == 1)
    {
      BackgroundColor[sc.Index] = swing;
      BackgroundColor.DataColor[sc.Index] = BackgroundColor.SecondaryColor;
    }
    else if (ColorType.GetIndex() == 2)
    {
      BarColor[sc.Index] = swing;
      BarColor.DataColor[sc.Index] = BarColor.SecondaryColor;
    }
  }

  carryForward = num;
}