447 lines
18 KiB
MQL5
447 lines
18 KiB
MQL5
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//+------------------------------------------------------------------+
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//| Market Profile Canvas.mq5 |
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//| Copyright 2009-2024, MetaQuotes Ltd |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2022, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property version "1.00"
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#property indicator_chart_window
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#include<Canvas\Canvas.mqh>
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#include <Generic\ArrayList.mqh>
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//--- input parameters
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input uint InpStartDate = 0; // day number to start calculation
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input uint InpShowDays = 7; // number of days to show
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input int InpMultiplier = 1; // histogram length multiplier
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input color InpAsiaSession = clrGold; // Asian session
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input color InpEuropeSession = clrBlue; // European session
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input color InpAmericaSession = clrViolet; // American session
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input uchar InpTransparency=150; // transparency, 0 = invisible
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input uint InpEuropeStartHour = 8; // European session opening hour
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input uint InpAmericaStartHour = 14; // American session opening hour
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//--- unique prefix to identify indicator objects
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string ExtPrefixUniq;
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//--- forward class declaration
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class CMarketProfile;
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//--- collection of pointers of CMarketProfile type
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CArrayList<CMarketProfile*> mp_list;
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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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//--- prepare prefix for objects
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string number=StringFormat("%I64d", GetTickCount64());
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ExtPrefixUniq=StringSubstr(number, StringLen(number)-4);
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Print("Indicator \"Market Profile Canvas\" started, prefix=", ExtPrefixUniq);
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return(INIT_SUCCEEDED);
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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,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[])
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{
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//--- opening time of the current daily bar
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datetime static open_time=0;
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//--- number of the last day for calculations
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uint lastday=InpStartDate+InpShowDays;
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//--- if the calculation has already been done
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if(prev_calculated!=0)
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{
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datetime current_open=iTime(Symbol(), PERIOD_D1, 0);
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//--- and we don't need to calculate Market Profile for the first day
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if(InpStartDate!=0)
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{
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//--- if the opening time has not been updated
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if(open_time==current_open)
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return(rates_total); // no calculation needed, exit
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}
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//--- otherwise, updated the opening time
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open_time=current_open;
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//--- further in the code, we will calculate Market Profile for only one day
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lastday=InpStartDate+1;
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}
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//--- make calculations for the specified days range
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for(uint day=InpStartDate; day<lastday; day++)
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{
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//--- get the day with the 'day' index
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MqlRates day_rate[];
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//--- if getting the current day failed
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//--- if you're running the indicator on weekend or holiday when there are no ticks
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//--- first open D1 chart for the symbol
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if(CopyRates(Symbol(), PERIOD_D1, day, 1, day_rate)==-1)
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return(prev_calculated); // exit and try the next call
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//--- get the beginning and end of the day
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datetime start_time=day_rate[0].time;
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datetime stop_time=start_time+PeriodSeconds(PERIOD_D1)-1;
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//--- get current day bars
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MqlRates bars_in_day[];
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if(CopyRates(Symbol(), PERIOD_CURRENT, start_time, stop_time, bars_in_day)==-1)
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return(prev_calculated); // exit and try the next call
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CMarketProfile *market_profile;
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//--- if Market Profile calculations and drawing have already been done earlier
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if(prev_calculated>0) // then update the profile of the current day having the index of 0
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{
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//--- search for the required CMarketProfile profile in the mp_list collection: it must be there
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market_profile=GetMarketProfileByDate(ExtPrefixUniq, start_time);
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//--- check
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if(market_profile==NULL)
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{
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PrintFormat("Market Profile not found for %s. Indicator will be recalculated for all specified days",
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TimeToString(start_time, TIME_DATE));
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return(0); // exit with zero value to ensure all calculations are done again
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}
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//--- the CMarketProfile object not found; pass valid High/Low values and a set of current-timeframe bars to it
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market_profile.SetHiLoBars(day_rate[0].high, day_rate[0].low, bars_in_day);
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}
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else
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{
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//--- create a new object to store the profile
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market_profile = new CMarketProfile(ExtPrefixUniq, start_time, stop_time, day_rate[0].high, day_rate[0].low, bars_in_day);
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//--- add the created CMarketProfile to the collection
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mp_list.Add(market_profile);
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}
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//--- set drawing parameters
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market_profile.UpdateSizes();
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//--- calculate profiles for each session
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market_profile.CalculateSessions();
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//--- draw the profile
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market_profile.Draw(InpMultiplier);
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}
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//--- redraw all objects
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ChartRedraw(0);
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//--- return value of prev_calculated for the next call
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return(rates_total);
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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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//--- delete all our Market Profile graphical objects after use
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Print("Indicator \"Market Profile Canvas\" stopped, delete all objects CMarketProfile with prefix=", ExtPrefixUniq);
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int size=mp_list.Count();
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for(int i=0; i<size; i++)
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{
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CMarketProfile *market_profile;
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mp_list.TryGetValue(i, market_profile);
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if(market_profile!=NULL)
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if(CheckPointer(market_profile)!=POINTER_INVALID)
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delete market_profile;
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}
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ChartRedraw(0);
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//---
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}
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//+------------------------------------------------------------------+
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//| Custom indicator chart's event handler |
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//+------------------------------------------------------------------+
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void OnChartEvent(const int id, const long& lparam, const double& dparam, const string& sparam)
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{
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//--- do not handle user events
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if(id>=CHARTEVENT_CUSTOM)
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return;
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//--- there have been changes on the chart
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if(CHARTEVENT_CHART_CHANGE==id)
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{
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int size=mp_list.Count();
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for(int i=0; i<size; i++)
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{
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CMarketProfile *market_profile;
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mp_list.TryGetValue(i, market_profile);
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if(market_profile)
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if(market_profile.isVisibleOnChart())
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{
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market_profile.UpdateSizes();
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market_profile.Draw(InpMultiplier);
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}
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}
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//--- update the chart after calculating all Market Profiles
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ChartRedraw();
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}
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}
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//+------------------------------------------------------------------+
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//| Returns CMarketProfile or NULL by the date |
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//+------------------------------------------------------------------+
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CMarketProfile* GetMarketProfileByDate(string prefix, datetime time)
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{
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int size=mp_list.Count();
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for(int i=0; i<size; i++)
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{
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CMarketProfile *market_profile;
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mp_list.TryGetValue(i, market_profile);
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if(market_profile!=NULL)
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if(CheckPointer(market_profile)!=POINTER_INVALID)
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{
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//--- check that the received market_profile pointer was created for the specified 'time' date
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if(market_profile.Check(prefix, time))
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return(market_profile); // CMarketProfile object found by date
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}
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}
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//--- not found
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return(NULL);
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}
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//+------------------------------------------------------------------+
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//| Class to store and draw Market Profile for the daily bar |
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//+------------------------------------------------------------------+
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class CMarketProfile
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{
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public:
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CMarketProfile() {};
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CMarketProfile(string prefix, datetime time1, datetime time2, double high, double low, MqlRates &bars[]);
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~CMarketProfile(void);
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//--- checks if the object is created for the specified 'time' date
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bool Check(string prefix, datetime time);
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//--- sets High/Low and a set of current-timeframe bars
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void SetHiLoBars(double high, double low, MqlRates &bars[]);
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//--- sets drawing parameters
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void UpdateSizes(void);
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//--- is the profile in the visible part of the chart?
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bool isVisibleOnChart(void);
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//--- has the chart scale changed?
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bool isChartScaleChanged(void);
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//--- calculate the profile by sessions
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bool CalculateSessions(void);
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//--- draw the profile
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void Draw(double multiplier=1.0);
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//---
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protected:
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CCanvas m_canvas; // canvas object to draw the profile
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uchar m_alpha; // alpha channel value that sets transparency
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string m_prefix; // unique prefix of OBJ_BITMAP object
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string m_name; // name of the OBJ_BITMAP object used in m_canvas
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double m_high; // day High
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double m_low; // day Low
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datetime m_time1; // day beginning
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datetime m_time2; // day end
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int m_day_size_pt; // daily bar height in points
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int m_height; // daily bar height in pixels on the chart
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int m_width; // daily bar width in pixels on the chart
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MqlRates m_bars[]; // current-timeframe bars between m_time1 and m_time2
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vector m_asia; // Asian session counters
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vector m_europe; // European session counters
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vector m_america; // American session counters
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double m_vert_scale; // factor conversion box -> y
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double m_hor_scale; // factor conversion count -> x
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};
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//+------------------------------------------------------------------+
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//| Constructor |
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//+------------------------------------------------------------------+
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void CMarketProfile::CMarketProfile(string prefix, datetime time1, datetime time2, double high, double low, MqlRates &bars[]):
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m_prefix(prefix),
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m_time1(time1),
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m_time2(time2),
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m_high(high),
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m_low(low),
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m_vert_scale(NULL),
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m_hor_scale(NULL)
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{
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ArrayCopy(m_bars, bars);
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m_name=ExtPrefixUniq+"_MP_"+TimeToString(time1, TIME_DATE);
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m_day_size_pt=(int)((m_high-m_low)/SymbolInfoDouble(Symbol(), SYMBOL_POINT));
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//--- set the sizes of vectors for trading sessions
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m_asia=vector::Zeros(m_day_size_pt);
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m_europe=vector::Zeros(m_day_size_pt);
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m_america=vector::Zeros(m_day_size_pt);
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//--- create an object
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UpdateSizes();
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//--- if it is the first tick at the day opening, the canvas sizes will be equal to zero - set 1 px for both coordinates
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m_height=m_height?m_height:1;
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m_width=m_width?m_width:1;
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if(m_canvas.CreateBitmap(m_name, m_time1, m_high, m_width, m_height, COLOR_FORMAT_ARGB_NORMALIZE))
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ObjectSetInteger(0, m_name, OBJPROP_BACK, true);
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else
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{
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Print("Error creating canvas: ", GetLastError());
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Print("time1=", m_time1, " high=", m_high, " width=", m_width, " height=", m_height);
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}
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}
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//+------------------------------------------------------------------+
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//| Checks if CMarketProfile object is for the specified 'time' date |
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//+------------------------------------------------------------------+
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bool CMarketProfile::Check(string prefix, datetime time)
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{
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string calculated= prefix+"_MP_"+TimeToString(time, TIME_DATE);
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return (m_name==(calculated));
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};
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//+------------------------------------------------------------------+
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//| Sets High/Low and a set of current-timeframe bars |
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//+------------------------------------------------------------------+
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void CMarketProfile::SetHiLoBars(double high, double low, MqlRates &bars[])
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{
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//--- if the day's High changed, move the OBJ_BITMAP object linked by m_name
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if(high>m_high)
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{
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m_high=high;
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if(!ObjectSetDouble(0, m_name, OBJPROP_PRICE, m_high))
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PrintFormat("Failed to update canvas for %s, error %d", TimeToString(m_time1, TIME_DATE), GetLastError());
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}
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ArrayCopy(m_bars, bars);
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m_high=high;
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m_low=low;
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//--- day range in points
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m_day_size_pt=(int)((m_high-m_low)/SymbolInfoDouble(Symbol(), SYMBOL_POINT));
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//--- re-set the sizes of vectors for trading sessions
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m_asia=vector::Zeros(m_day_size_pt);
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m_europe=vector::Zeros(m_day_size_pt);
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m_america=vector::Zeros(m_day_size_pt);
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}
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//+------------------------------------------------------------------+
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//| Sets drawing parameters |
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//+------------------------------------------------------------------+
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void CMarketProfile::UpdateSizes(void)
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{
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//--- convert time/price to x/y coordinates
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int x1, y1, x2, y2;
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ChartTimePriceToXY(0, 0, m_time1, m_high, x1, y1);
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ChartTimePriceToXY(0, 0, m_time2, m_low, x2, y2);
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//--- calculate window size
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m_height=y2-y1;
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m_width =x2-x1;
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//--- calculate coefficients for converting boxes and counters into chart pixels
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m_vert_scale=double(m_height)/(m_day_size_pt);
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m_hor_scale =double(m_width*PeriodSeconds(PERIOD_CURRENT))/PeriodSeconds(PERIOD_D1);
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m_canvas.Resize(m_width, m_height);
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}
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//+------------------------------------------------------------------+
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//| Destructor |
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//+------------------------------------------------------------------+
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void CMarketProfile::~CMarketProfile(void)
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{
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//--- delete all our graphical objects after use
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ObjectsDeleteAll(0, m_prefix, 0, OBJ_BITMAP);
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ChartRedraw();
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}
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//+------------------------------------------------------------------+
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//| Checks that the profile is in the visible part of the chart |
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//+------------------------------------------------------------------+
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bool CMarketProfile::isVisibleOnChart(void)
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{
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long last_bar=ChartGetInteger(0, CHART_FIRST_VISIBLE_BAR);
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long first_bar=last_bar+-ChartGetInteger(0, CHART_VISIBLE_BARS);
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first_bar=first_bar>0?first_bar:0;
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datetime left =iTime(Symbol(), Period(), (int)last_bar);
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datetime right=iTime(Symbol(), Period(), (int)first_bar);
|
||
|
|
//--- return check result
|
||
|
|
return((m_time1>= left && m_time1 <=right) || (m_time2>= left && m_time2 <=right));
|
||
|
|
}
|
||
|
|
//+------------------------------------------------------------------+
|
||
|
|
//| Prepares profile arrays by sessions |
|
||
|
|
//+------------------------------------------------------------------+
|
||
|
|
bool CMarketProfile::CalculateSessions(void)
|
||
|
|
{
|
||
|
|
double point=SymbolInfoDouble(Symbol(), SYMBOL_POINT);
|
||
|
|
if(ArraySize(m_bars)==0)
|
||
|
|
return(false);
|
||
|
|
//---- iterate through all bars of the current day and mark the boxes they fall into
|
||
|
|
int size=ArraySize(m_bars);
|
||
|
|
for(int i=0; i<size; i++)
|
||
|
|
{
|
||
|
|
MqlDateTime bar_time;
|
||
|
|
TimeToStruct(m_bars[i].time, bar_time);
|
||
|
|
uint hour =bar_time.hour;
|
||
|
|
int start_box=(int)((m_bars[i].low-m_low)/point);
|
||
|
|
int stop_box =(int)((m_bars[i].high-m_low)/point);
|
||
|
|
|
||
|
|
//--- American session
|
||
|
|
if(hour>=InpAmericaStartHour)
|
||
|
|
{
|
||
|
|
for(int ind=start_box; ind<stop_box; ind++)
|
||
|
|
m_america[ind]++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
//--- European session
|
||
|
|
if(hour>=InpEuropeStartHour && hour<InpAmericaStartHour)
|
||
|
|
for(int ind=start_box; ind<stop_box; ind++)
|
||
|
|
m_europe[ind]++;
|
||
|
|
else
|
||
|
|
//--- Asian session
|
||
|
|
for(int ind=start_box; ind<stop_box; ind++)
|
||
|
|
m_asia[ind]++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//--- session vectors are ready
|
||
|
|
return(true);
|
||
|
|
}
|
||
|
|
//+------------------------------------------------------------------+
|
||
|
|
//| Draw Market Profile on the canvas |
|
||
|
|
//+------------------------------------------------------------------+
|
||
|
|
void CMarketProfile::Draw(double multiplier=1.0)
|
||
|
|
{
|
||
|
|
//--- sum the sessions for drawing
|
||
|
|
vector total_profile=m_asia+m_europe+m_america; // profile including all sessions
|
||
|
|
vector europe_asia=m_asia+m_europe; // profile as the sum of the European and Asian sessions
|
||
|
|
|
||
|
|
//--- set a transparent background, any color
|
||
|
|
m_canvas.Erase(ColorToARGB(clrBlack, 0));
|
||
|
|
|
||
|
|
//--- draw the American session with rectangles
|
||
|
|
int x1=0; // to draw a rectangle, the left corner always starts at zero
|
||
|
|
int y1, x2, y2;
|
||
|
|
int size=(int)total_profile.Size();
|
||
|
|
for(int i=0; i<size; i++)
|
||
|
|
{
|
||
|
|
//--- skip zero values, do not draw
|
||
|
|
if(total_profile[i]==0)
|
||
|
|
continue;
|
||
|
|
//--- calculate the bottom point to draw the rectangle
|
||
|
|
y1=m_height-int(i*m_vert_scale); // x1=0 always
|
||
|
|
y2=(int)(y1+m_vert_scale); // top point of the rectangle
|
||
|
|
x2=(int)(total_profile[i]*m_hor_scale*multiplier); // right corner of the rectangle
|
||
|
|
m_canvas.FillRectangle(x1, y1, x2, y2, ColorToARGB(InpAmericaSession, InpTransparency));
|
||
|
|
}
|
||
|
|
|
||
|
|
//--- draw the European session with rectangles
|
||
|
|
for(int i=0; i<size; i++)
|
||
|
|
{
|
||
|
|
//--- skip zero values, do not draw
|
||
|
|
if(total_profile[i]==0)
|
||
|
|
continue;
|
||
|
|
//--- calculate 2 points to draw the rectangle
|
||
|
|
y1=m_height-int(i*m_vert_scale);
|
||
|
|
y2=(int)(y1+m_vert_scale);
|
||
|
|
x2=(int)(europe_asia[i]*m_hor_scale*multiplier);
|
||
|
|
m_canvas.FillRectangle(x1, y1, x2, y2, ColorToARGB(InpEuropeSession, InpTransparency));
|
||
|
|
}
|
||
|
|
|
||
|
|
//--- draw the Asian session with rectangles
|
||
|
|
for(int i=0; i<size; i++)
|
||
|
|
{
|
||
|
|
//--- skip zero values, do not draw
|
||
|
|
if(total_profile[i]==0)
|
||
|
|
continue;
|
||
|
|
//--- calculate 2 points to draw the rectangle
|
||
|
|
y1=m_height-int(i*m_vert_scale);
|
||
|
|
y2=(int)(y1+m_vert_scale);
|
||
|
|
x2=(int)(m_asia[i]*m_hor_scale*multiplier);
|
||
|
|
m_canvas.FillRectangle(x1, y1, x2, y2, ColorToARGB(InpAsiaSession, InpTransparency));
|
||
|
|
}
|
||
|
|
//--- update the OBJ_BITMAP object without refreshing the chart
|
||
|
|
m_canvas.Update(false);
|
||
|
|
}
|
||
|
|
//+------------------------------------------------------------------+
|