| //+------------------------------------------------------------------+
|
| //| Custom.mqh |
|
| //| Copyright 2000-2025, MetaQuotes Ltd. |
|
| //| https://www.mql5.com |
|
| //+------------------------------------------------------------------+
|
| #include "Indicator.mqh"
|
| //+------------------------------------------------------------------+
|
| //| Class CiCustom. |
|
| //| Purpose: Class of custom indicators. |
|
| //| Derives from class CIndicator. |
|
| //+------------------------------------------------------------------+
|
| class CiCustom : public CIndicator
|
| {
|
| protected:
|
| int m_num_params; // number of creation parameters
|
| MqlParam m_params[]; // creation parameters
|
|
|
| public:
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| CiCustom(void);
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| ~CiCustom(void);
|
| //--- methods of access to protected data
|
| bool NumBuffers(const int buffers);
|
| int NumParams(void) const { return(m_num_params); }
|
| ENUM_DATATYPE ParamType(const int ind) const;
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| long ParamLong(const int ind) const;
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| double ParamDouble(const int ind) const;
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| string ParamString(const int ind) const;
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| //--- method of identifying
|
| virtual int Type(void) const { return(IND_CUSTOM); }
|
|
|
| protected:
|
| //--- methods of tuning
|
| virtual bool Initialize(const string symbol,const ENUM_TIMEFRAMES period,const int num_params,const MqlParam ¶ms[]);
|
| };
|
| //+------------------------------------------------------------------+
|
| //| Constructor |
|
| //+------------------------------------------------------------------+
|
| CiCustom::CiCustom(void) : m_num_params(0)
|
| {
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Destructor |
|
| //+------------------------------------------------------------------+
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| CiCustom::~CiCustom(void)
|
| {
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Set number of buffers of indicator |
|
| //+------------------------------------------------------------------+
|
| bool CiCustom::NumBuffers(const int buffers)
|
| {
|
| bool result=true;
|
| //---
|
| if(m_buffers_total==0)
|
| {
|
| m_buffers_total=buffers;
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| return(true);
|
| }
|
| if(m_buffers_total!=buffers)
|
| {
|
| Shutdown();
|
| result=CreateBuffers(m_symbol,m_period,buffers);
|
| if(result)
|
| {
|
| //--- create buffers
|
| for(int i=0;i<m_buffers_total;i++)
|
| ((CIndicatorBuffer*)At(i)).Name("LINE "+IntegerToString(i));
|
| }
|
| }
|
| //---
|
| return(result);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Get type of specified parameter of creation |
|
| //+------------------------------------------------------------------+
|
| ENUM_DATATYPE CiCustom::ParamType(const int ind) const
|
| {
|
| if(ind>=m_num_params)
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| return(WRONG_VALUE);
|
| //---
|
| return(m_params[ind].type);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Get specified parameter of creatiob as a long value |
|
| //+------------------------------------------------------------------+
|
| long CiCustom::ParamLong(const int ind) const
|
| {
|
| if(ind<m_num_params)
|
| {
|
| switch(m_params[ind].type)
|
| {
|
| case TYPE_BOOL:
|
| case TYPE_CHAR:
|
| case TYPE_UCHAR:
|
| case TYPE_SHORT:
|
| case TYPE_USHORT:
|
| case TYPE_INT:
|
| case TYPE_UINT:
|
| case TYPE_COLOR:
|
| case TYPE_LONG:
|
| case TYPE_ULONG:
|
| case TYPE_DATETIME:
|
| return(m_params[ind].integer_value);
|
| case TYPE_STRING:
|
| case TYPE_DOUBLE:
|
| case TYPE_FLOAT:
|
| case TYPE_VECTOR:
|
| case TYPE_VECTORF:
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| case TYPE_VECTORC:
|
| case TYPE_VECTORCF:
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| case TYPE_MATRIX:
|
| case TYPE_MATRIXF:
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| case TYPE_MATRIXC:
|
| case TYPE_MATRIXCF:
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| break;
|
| }
|
| }
|
| //---
|
| return(0);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Get specified parameter of creation as a double value |
|
| //+------------------------------------------------------------------+
|
| double CiCustom::ParamDouble(const int ind) const
|
| {
|
| if(ind>=m_num_params)
|
| return(EMPTY_VALUE);
|
| switch(m_params[ind].type)
|
| {
|
| case TYPE_DOUBLE:
|
| case TYPE_FLOAT:
|
| break;
|
| default:
|
| return(EMPTY_VALUE);
|
| }
|
| //---
|
| return(m_params[ind].double_value);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Get specified parameter of creation as a string value |
|
| //+------------------------------------------------------------------+
|
| string CiCustom::ParamString(const int ind) const
|
| {
|
| if(ind>=m_num_params || m_params[ind].type!=TYPE_STRING)
|
| return("");
|
| //---
|
| return(m_params[ind].string_value);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Initialize the indicator with universal parameters |
|
| //+------------------------------------------------------------------+
|
| bool CiCustom::Initialize(const string symbol,const ENUM_TIMEFRAMES period,const int num_params,const MqlParam ¶ms[])
|
| {
|
| int i;
|
| //--- tune
|
| if(m_buffers_total==0)
|
| m_buffers_total=256;
|
| if(CreateBuffers(symbol,period,m_buffers_total))
|
| {
|
| //--- string of status of drawing
|
| m_name ="Custom "+params[0].string_value;
|
| m_status="("+symbol+","+PeriodDescription();
|
| for(i=1;i<num_params;i++)
|
| {
|
| switch(params[i].type)
|
| {
|
| case TYPE_BOOL:
|
| m_status=m_status+","+((params[i].integer_value)?"true":"false");
|
| break;
|
| case TYPE_CHAR:
|
| case TYPE_UCHAR:
|
| case TYPE_SHORT:
|
| case TYPE_USHORT:
|
| case TYPE_INT:
|
| case TYPE_UINT:
|
| case TYPE_LONG:
|
| case TYPE_ULONG:
|
| m_status=m_status+","+IntegerToString(params[i].integer_value);
|
| break;
|
| case TYPE_COLOR:
|
| m_status=m_status+","+ColorToString((color)params[i].integer_value);
|
| break;
|
| case TYPE_DATETIME:
|
| m_status=m_status+","+TimeToString(params[i].integer_value);
|
| break;
|
| case TYPE_FLOAT:
|
| case TYPE_DOUBLE:
|
| m_status=m_status+","+DoubleToString(params[i].double_value);
|
| break;
|
| case TYPE_STRING:
|
| m_status=m_status+",'"+params[i].string_value+"'";
|
| break;
|
| case TYPE_VECTOR:
|
| case TYPE_VECTORF:
|
| case TYPE_VECTORC:
|
| case TYPE_VECTORCF:
|
| case TYPE_MATRIX:
|
| case TYPE_MATRIXF:
|
| case TYPE_MATRIXC:
|
| case TYPE_MATRIXCF:
|
| m_status=m_status+",<NA>";
|
| break;
|
| }
|
| }
|
| m_status=m_status+") H="+IntegerToString(m_handle);
|
| //--- save settings
|
| ArrayResize(m_params,num_params);
|
| for(i=0;i<num_params;i++)
|
| {
|
| m_params[i].type =params[i].type;
|
| m_params[i].integer_value=params[i].integer_value;
|
| m_params[i].double_value =params[i].double_value;
|
| m_params[i].string_value =params[i].string_value;
|
| }
|
| m_num_params=num_params;
|
| //--- create buffers
|
| for(i=0;i<m_buffers_total;i++)
|
| ((CIndicatorBuffer*)At(i)).Name("LINE "+IntegerToString(i));
|
| //--- ok
|
| return(true);
|
| }
|
| //--- error
|
| return(false);
|
| }
|
| //+------------------------------------------------------------------+
|
