93 lines
4.1 KiB
MQL5
93 lines
4.1 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| Label.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 "WndObj.mqh"
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#include <ChartObjects\ChartObjectsTxtControls.mqh>
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//+------------------------------------------------------------------+
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//| Class CLabel |
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//| Usage: control that is displayed by |
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//| the CChartObjectLabel object |
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//+------------------------------------------------------------------+
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class CLabel : public CWndObj
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{
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private:
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CChartObjectLabel m_label; // chart object
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public:
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CLabel(void);
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~CLabel(void);
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//--- create
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virtual bool Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2);
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protected:
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//--- handlers of object settings
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virtual bool OnSetText(void) { return(m_label.Description(m_text)); }
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virtual bool OnSetColor(void) { return(m_label.Color(m_color)); }
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virtual bool OnSetFont(void) { return(m_label.Font(m_font)); }
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virtual bool OnSetFontSize(void) { return(m_label.FontSize(m_font_size)); }
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//--- internal event handlers
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virtual bool OnCreate(void);
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virtual bool OnShow(void);
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virtual bool OnHide(void);
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virtual bool OnMove(void);
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};
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//+------------------------------------------------------------------+
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//| Constructor |
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//+------------------------------------------------------------------+
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CLabel::CLabel(void)
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{
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m_color=CONTROLS_LABEL_COLOR;
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}
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//+------------------------------------------------------------------+
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//| Destructor |
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//+------------------------------------------------------------------+
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CLabel::~CLabel(void)
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{
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}
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//+------------------------------------------------------------------+
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//| Create a control |
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//+------------------------------------------------------------------+
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bool CLabel::Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2)
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{
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//--- call method of the parent class
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if(!CWndObj::Create(chart,name,subwin,x1,y1,x2,y2))
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return(false);
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//--- create the chart object
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if(!m_label.Create(chart,name,subwin,x1,y1))
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return(false);
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//--- call the settings handler
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return(OnChange());
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}
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//+------------------------------------------------------------------+
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//| Create object on chart |
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//+------------------------------------------------------------------+
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bool CLabel::OnCreate(void)
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{
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//--- create the chart object by previously set parameters
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return(m_label.Create(m_chart_id,m_name,m_subwin,m_rect.left,m_rect.top));
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}
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//+------------------------------------------------------------------+
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//| Display object on chart |
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//+------------------------------------------------------------------+
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bool CLabel::OnShow(void)
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{
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return(m_label.Timeframes(OBJ_ALL_PERIODS));
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}
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//+------------------------------------------------------------------+
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//| Hide object from chart |
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//+------------------------------------------------------------------+
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bool CLabel::OnHide(void)
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{
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return(m_label.Timeframes(OBJ_NO_PERIODS));
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}
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//+------------------------------------------------------------------+
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//| Absolute movement of the chart object |
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//+------------------------------------------------------------------+
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bool CLabel::OnMove(void)
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{
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//--- position the chart object
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return(m_label.X_Distance(m_rect.left) && m_label.Y_Distance(m_rect.top));
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}
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//+------------------------------------------------------------------+
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