398 lines
16 KiB
MQL5
398 lines
16 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| ChartObjectSubChart.mqh |
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//| Copyright 2000-2025, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#include "ChartObject.mqh"
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//+------------------------------------------------------------------+
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//| Class CChartObjectSubChart. |
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//| Purpose: Class of the "SubChart" object of chart. |
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//| Derives from class CChartObject. |
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//+------------------------------------------------------------------+
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class CChartObjectSubChart : public CChartObject
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{
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public:
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CChartObjectSubChart(void);
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~CChartObjectSubChart(void);
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//--- method of creating object
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bool Create(long chart_id,const string name,const int window,const int X,const int Y,const int sizeX,const int sizeY);
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//--- method of identifying the object
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virtual int Type(void) const { return(OBJ_CHART); }
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//--- methods of access to properties of the object
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int X_Distance(void) const;
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bool X_Distance(const int X) const;
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int Y_Distance(void) const;
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bool Y_Distance(const int Y) const;
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ENUM_BASE_CORNER Corner(void) const;
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bool Corner(const ENUM_BASE_CORNER corner) const;
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int X_Size(void) const;
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bool X_Size(const int size) const;
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int Y_Size(void) const;
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bool Y_Size(const int size) const;
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string Symbol(void) const;
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bool Symbol(const string symbol) const;
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int Period(void) const;
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bool Period(const int period) const;
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int Scale(void) const;
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bool Scale(const int scale) const;
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bool DateScale(void) const;
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bool DateScale(const bool scale) const;
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bool PriceScale(void) const;
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bool PriceScale(const bool scale) const;
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//--- change of time/price coordinates is blocked
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datetime Time(const int point) const { return(CChartObject::Time(point)); }
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bool Time(const int point,const datetime time) const { return(false); }
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double Price(const int point) const { return(CChartObject::Price(point)); }
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bool Price(const int point,const double price) const { return(false); }
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//--- methods for working with files
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virtual bool Save(const int file_handle);
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virtual bool Load(const int file_handle);
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};
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//+------------------------------------------------------------------+
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//| Constructor |
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//+------------------------------------------------------------------+
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CChartObjectSubChart::CChartObjectSubChart(void)
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{
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}
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//+------------------------------------------------------------------+
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//| Destructor |
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//+------------------------------------------------------------------+
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CChartObjectSubChart::~CChartObjectSubChart(void)
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{
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}
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//+------------------------------------------------------------------+
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//| Create object "SubChart" |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Create(long chart_id,const string name,const int window,
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const int X,const int Y,const int sizeX,const int sizeY)
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{
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if(!ObjectCreate(chart_id,name,OBJ_CHART,window,0,0,0))
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return(false);
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if(!Attach(chart_id,name,window,1))
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return(false);
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if(!X_Distance(X) || !Y_Distance(Y))
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return(false);
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if(!X_Size(sizeX) || !Y_Size(sizeY))
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return(false);
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//--- successful
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Get the X-distance |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::X_Distance(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(0);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_XDISTANCE));
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}
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//+------------------------------------------------------------------+
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//| Set the X-distance |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::X_Distance(const int X) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_XDISTANCE,X));
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}
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//+------------------------------------------------------------------+
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//| Get the Y-distance |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::Y_Distance(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(0);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_YDISTANCE));
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}
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//+------------------------------------------------------------------+
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//| Set the Y-distance |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Y_Distance(const int Y) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_YDISTANCE,Y));
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}
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//+------------------------------------------------------------------+
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//| Get base corner |
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//+------------------------------------------------------------------+
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ENUM_BASE_CORNER CChartObjectSubChart::Corner(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(WRONG_VALUE);
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//--- result
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return((ENUM_BASE_CORNER)ObjectGetInteger(m_chart_id,m_name,OBJPROP_CORNER));
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}
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//+------------------------------------------------------------------+
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//| Set base corner |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Corner(const ENUM_BASE_CORNER corner) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_CORNER,corner));
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}
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//+------------------------------------------------------------------+
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//| Get the X-size |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::X_Size(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(0);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_XSIZE));
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}
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//+------------------------------------------------------------------+
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//| Set X-size |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::X_Size(const int size) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_XSIZE,size));
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}
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//+------------------------------------------------------------------+
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//| Get the Y-size |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::Y_Size(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(0);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_YSIZE));
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}
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//+------------------------------------------------------------------+
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//| Set the Y-size |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Y_Size(const int size) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_YSIZE,size));
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}
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//+------------------------------------------------------------------+
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//| Get chart symbol |
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//+------------------------------------------------------------------+
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string CChartObjectSubChart::Symbol(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return("");
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//--- result
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return(ObjectGetString(m_chart_id,m_name,OBJPROP_SYMBOL));
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}
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//+------------------------------------------------------------------+
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//| Set chart symbol |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Symbol(const string symbol) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetString(m_chart_id,m_name,OBJPROP_SYMBOL,symbol));
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}
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//+------------------------------------------------------------------+
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//| Get chart period |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::Period(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(0);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_PERIOD));
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}
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//+------------------------------------------------------------------+
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//| Set chart period |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Period(const int period) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_PERIOD,period));
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}
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//+------------------------------------------------------------------+
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//| Get chart scale |
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//+------------------------------------------------------------------+
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int CChartObjectSubChart::Scale(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(-1);
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//--- result
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return((int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_CHART_SCALE));
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}
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//+------------------------------------------------------------------+
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//| Set chart scale |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Scale(const int scale) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_CHART_SCALE,scale));
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}
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//+------------------------------------------------------------------+
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//| Get the "time scale" flag |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::DateScale(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return((bool)ObjectGetInteger(m_chart_id,m_name,OBJPROP_DATE_SCALE));
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}
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//+------------------------------------------------------------------+
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//| Set the "time scale" flag |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::DateScale(const bool scale) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_DATE_SCALE,scale));
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}
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//+------------------------------------------------------------------+
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//| Get the "price scale" flag |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::PriceScale(void) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return((bool)ObjectGetInteger(m_chart_id,m_name,OBJPROP_PRICE_SCALE));
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}
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//+------------------------------------------------------------------+
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//| Set the "price scale" flag |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::PriceScale(const bool scale) const
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{
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//--- check
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if(m_chart_id==-1)
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return(false);
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//--- result
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return(ObjectSetInteger(m_chart_id,m_name,OBJPROP_PRICE_SCALE,scale));
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}
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//+------------------------------------------------------------------+
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//| Writing parameters of object to file |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Save(const int file_handle)
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{
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int len;
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string str;
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//--- check
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if(file_handle==INVALID_HANDLE || m_chart_id==-1)
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return(false);
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//--- write
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if(!CChartObject::Save(file_handle))
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return(false);
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//--- write value of the "X-distance" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_XDISTANCE),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "Y-distance" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_YDISTANCE),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "corner" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_CORNER),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "X-size" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_XSIZE),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "Y-size" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_YSIZE),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "symbol" property
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str=ObjectGetString(m_chart_id,m_name,OBJPROP_SYMBOL);
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len=StringLen(str);
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if(FileWriteInteger(file_handle,len,INT_VALUE)!=INT_VALUE)
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return(false);
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if(len!=0 && FileWriteString(file_handle,str,len)!=len)
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return(false);
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//--- write value of the "period" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_PERIOD),INT_VALUE)!=sizeof(int))
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return(false);
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//--- write value of the "scale" property
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if(FileWriteDouble(file_handle,ObjectGetDouble(m_chart_id,m_name,OBJPROP_SCALE))!=sizeof(double))
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return(false);
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//--- write value of the "time scale" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_DATE_SCALE),CHAR_VALUE)!=sizeof(char))
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return(false);
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//--- write value of the "price scale" property
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if(FileWriteInteger(file_handle,(int)ObjectGetInteger(m_chart_id,m_name,OBJPROP_PRICE_SCALE),CHAR_VALUE)!=sizeof(char))
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return(false);
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//--- successful
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Reading parameters of object from file |
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//+------------------------------------------------------------------+
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bool CChartObjectSubChart::Load(const int file_handle)
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{
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int len;
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string str;
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//--- check
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if(file_handle==INVALID_HANDLE || m_chart_id==-1)
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return(false);
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//--- read
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if(!CChartObject::Load(file_handle))
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return(false);
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//--- read value of the "X-distance" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_XDISTANCE,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "Y-distance" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_YDISTANCE,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "corner" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_CORNER,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "X-size" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_XSIZE,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "Y-size" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_YSIZE,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "symbol" property
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len=FileReadInteger(file_handle,INT_VALUE);
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str=(len!=0) ? FileReadString(file_handle,len) : "";
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if(!ObjectSetString(m_chart_id,m_name,OBJPROP_SYMBOL,str))
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return(false);
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//--- read value of the "period" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_PERIOD,FileReadInteger(file_handle,INT_VALUE)))
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return(false);
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//--- read value of the "scale" property
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if(!ObjectSetDouble(m_chart_id,m_name,OBJPROP_SCALE,FileReadDatetime(file_handle)))
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return(false);
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//--- read value of the "time scale" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_DATE_SCALE,FileReadInteger(file_handle,CHAR_VALUE)))
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return(false);
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//--- read value of the "price scale" property
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if(!ObjectSetInteger(m_chart_id,m_name,OBJPROP_PRICE_SCALE,FileReadInteger(file_handle,CHAR_VALUE)))
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return(false);
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//--- successful
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return(true);
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}
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//+------------------------------------------------------------------+
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