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Toh4iem9
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//+------------------------------------------------------------------+
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//| Bollinger_Band_Width_Pro.mq5 |
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//| Copyright 2025, xxxxxxxx|
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//| |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2025, xxxxxxxx"
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#property version "2.10"
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#property description "Professional Bollinger Band Width oscillator with selectable analysis modes."
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#property indicator_separate_window
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#property indicator_buffers 4 // Main Width, Upper Channel, Lower Channel, Centerline
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#property indicator_plots 4
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#include <MyIncludes\Bollinger_Bands_Calculator.mqh>
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//--- Plot 1: Band Width Line
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#property indicator_label1 "BandWidth"
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrSlateBlue
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 2
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//--- Plot 2: Upper Channel Line
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#property indicator_label2 "Upper Channel"
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#property indicator_type2 DRAW_LINE
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#property indicator_color2 clrGray
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#property indicator_style2 STYLE_DOT
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#property indicator_width2 1
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//--- Plot 3: Lower Channel Line
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#property indicator_label3 "Lower Channel"
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#property indicator_type3 DRAW_LINE
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#property indicator_color3 clrGray
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#property indicator_style3 STYLE_DOT
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#property indicator_width3 1
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//--- Plot 4: Centerline for Bands on Width
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#property indicator_label4 "Centerline"
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#property indicator_type4 DRAW_LINE
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#property indicator_color4 clrGray
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#property indicator_style4 STYLE_DOT
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#property indicator_width4 1
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//--- Custom Enum for Display Mode
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enum ENUM_BBW_MODE
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{
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MODE_WIDTH_ONLY,
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MODE_BANDS_ON_WIDTH,
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MODE_EXTREMES_CHANNEL
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};
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//--- Custom Enum for Price Source, including Heikin Ashi
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enum ENUM_APPLIED_PRICE_HA_ALL
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{
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//--- Heikin Ashi Prices
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PRICE_HA_CLOSE = -1,
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PRICE_HA_OPEN = -2,
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PRICE_HA_HIGH = -3,
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PRICE_HA_LOW = -4,
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PRICE_HA_MEDIAN = -5,
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PRICE_HA_TYPICAL = -6,
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PRICE_HA_WEIGHTED = -7,
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//--- Standard Prices
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PRICE_CLOSE_STD = PRICE_CLOSE,
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PRICE_OPEN_STD = PRICE_OPEN,
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PRICE_HIGH_STD = PRICE_HIGH,
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PRICE_LOW_STD = PRICE_LOW,
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PRICE_MEDIAN_STD = PRICE_MEDIAN,
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PRICE_TYPICAL_STD = PRICE_TYPICAL,
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PRICE_WEIGHTED_STD = PRICE_WEIGHTED
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};
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//--- Input Parameters ---
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input group "Base Bollinger Bands Settings"
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input int InpPeriod = 20;
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input double InpDeviation = 2.0;
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input ENUM_MA_METHOD InpMethodMA = MODE_SMA;
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input ENUM_APPLIED_PRICE_HA_ALL InpSourcePrice = PRICE_CLOSE_STD;
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input group "Analysis Mode"
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input ENUM_BBW_MODE InpDisplayMode = MODE_WIDTH_ONLY;
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input group "Bands on BandWidth Settings"
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input int InpBandsOnWidth_Period = 20;
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input double InpBandsOnWidth_Deviation = 2.0;
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input group "Extremes Channel Settings"
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input int InpExtremesLength = 125;
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//--- Indicator Buffers ---
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double BufferBandWidth[];
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double BufferUpperChannel[];
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double BufferLowerChannel[];
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double BufferCenterline[];
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//--- Global calculator object ---
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CBollingerBandsCalculator *g_calculator;
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function. |
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//+------------------------------------------------------------------+
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int OnInit()
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{
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SetIndexBuffer(0, BufferBandWidth, INDICATOR_DATA);
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SetIndexBuffer(1, BufferUpperChannel, INDICATOR_DATA);
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SetIndexBuffer(2, BufferLowerChannel, INDICATOR_DATA);
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SetIndexBuffer(3, BufferCenterline, INDICATOR_DATA);
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ArraySetAsSeries(BufferBandWidth, false);
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ArraySetAsSeries(BufferUpperChannel, false);
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ArraySetAsSeries(BufferLowerChannel, false);
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ArraySetAsSeries(BufferCenterline, false);
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if(InpSourcePrice <= PRICE_HA_CLOSE)
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{
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g_calculator = new CBollingerBandsCalculator_HA();
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("BBW Pro HA(%d)", InpPeriod));
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}
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else
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{
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g_calculator = new CBollingerBandsCalculator();
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("BBW Pro(%d)", InpPeriod));
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}
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if(CheckPointer(g_calculator) == POINTER_INVALID ||
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!g_calculator.Init(InpPeriod, InpDeviation, InpMethodMA))
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{
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Print("Failed to initialize Bollinger Bands Calculator.");
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return(INIT_FAILED);
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}
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int draw_begin = InpPeriod - 1;
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, draw_begin);
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PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, draw_begin);
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PlotIndexSetInteger(2, PLOT_DRAW_BEGIN, draw_begin);
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PlotIndexSetInteger(3, PLOT_DRAW_BEGIN, draw_begin + InpBandsOnWidth_Period);
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IndicatorSetInteger(INDICATOR_DIGITS, 5);
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Custom indicator deinitialization function. |
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//+------------------------------------------------------------------+
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void OnDeinit(const int reason)
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{
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if(CheckPointer(g_calculator) != POINTER_INVALID)
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delete g_calculator;
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}
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//+------------------------------------------------------------------+
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//| Custom indicator iteration function. |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total, const int, const datetime&[], const double &open[], const double &high[], const double &low[], const double &close[], const long&[], const long&[], const int&[])
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{
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if(CheckPointer(g_calculator) == POINTER_INVALID)
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return 0;
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double upper_band[], lower_band[], ma_line[];
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ArrayResize(upper_band, rates_total);
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ArrayResize(lower_band, rates_total);
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ArrayResize(ma_line, rates_total);
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ENUM_APPLIED_PRICE price_type;
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if(InpSourcePrice <= PRICE_HA_CLOSE)
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price_type = (ENUM_APPLIED_PRICE)(-(int)InpSourcePrice);
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else
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price_type = (ENUM_APPLIED_PRICE)InpSourcePrice;
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g_calculator.Calculate(rates_total, price_type, open, high, low, close,
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ma_line, upper_band, lower_band);
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int start_pos = InpPeriod - 1;
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for(int i = start_pos; i < rates_total; i++)
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{
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if(ma_line[i] != 0)
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BufferBandWidth[i] = ((upper_band[i] - lower_band[i]) / ma_line[i]) * 100.0;
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else
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BufferBandWidth[i] = 0;
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}
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//--- Initialize all overlay buffers to empty
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ArrayInitialize(BufferUpperChannel, EMPTY_VALUE);
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ArrayInitialize(BufferLowerChannel, EMPTY_VALUE);
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ArrayInitialize(BufferCenterline, EMPTY_VALUE);
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switch(InpDisplayMode)
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{
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case MODE_BANDS_ON_WIDTH:
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{
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int bands_start_pos = start_pos + InpBandsOnWidth_Period - 1;
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for(int i = bands_start_pos; i < rates_total; i++)
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{
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double sum = 0;
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for(int j = 0; j < InpBandsOnWidth_Period; j++)
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sum += BufferBandWidth[i-j];
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BufferCenterline[i] = sum / InpBandsOnWidth_Period;
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}
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for(int i = bands_start_pos; i < rates_total; i++)
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{
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double std_dev_val = 0, sum_sq = 0;
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for(int j = 0; j < InpBandsOnWidth_Period; j++)
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sum_sq += pow(BufferBandWidth[i-j] - BufferCenterline[i], 2);
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std_dev_val = sqrt(sum_sq / InpBandsOnWidth_Period);
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BufferUpperChannel[i] = BufferCenterline[i] + InpBandsOnWidth_Deviation * std_dev_val;
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BufferLowerChannel[i] = BufferCenterline[i] - InpBandsOnWidth_Deviation * std_dev_val;
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}
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break;
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}
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case MODE_EXTREMES_CHANNEL:
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{
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int extremes_start_pos = start_pos + InpExtremesLength - 1;
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for(int i = extremes_start_pos; i < rates_total; i++)
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{
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int start = i - InpExtremesLength + 1;
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int highest_idx = ArrayMaximum(BufferBandWidth, start, InpExtremesLength);
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BufferUpperChannel[i] = BufferBandWidth[highest_idx];
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int lowest_idx = ArrayMinimum(BufferBandWidth, start, InpExtremesLength);
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BufferLowerChannel[i] = BufferBandWidth[lowest_idx];
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}
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break;
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}
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}
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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