265 lines
9.8 KiB
MQL5
265 lines
9.8 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| SpinEdit.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 "WndContainer.mqh"
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#include "Edit.mqh"
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#include "BmpButton.mqh"
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//+------------------------------------------------------------------+
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//| Resources |
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//+------------------------------------------------------------------+
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#resource "res\\SpinInc.bmp"
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#resource "res\\SpinDec.bmp"
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//+------------------------------------------------------------------+
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//| Class CSpinEdit |
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//| Usage: class that implements the "Up-Down" control |
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//+------------------------------------------------------------------+
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class CSpinEdit : public CWndContainer
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{
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private:
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//--- dependent controls
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CEdit m_edit; // the entry field object
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CBmpButton m_inc; // the "Increment button" object
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CBmpButton m_dec; // the "Decrement button" object
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//--- adjusted parameters
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int m_min_value; // minimum value
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int m_max_value; // maximum value
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//--- state
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int m_value; // current value
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public:
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CSpinEdit(void);
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~CSpinEdit(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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//--- chart event handler
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virtual bool OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam);
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//--- set up
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int MinValue(void) const { return(m_min_value); }
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void MinValue(const int value);
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int MaxValue(void) const { return(m_max_value); }
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void MaxValue(const int value);
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//--- state
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int Value(void) const { return(m_value); }
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bool Value(int value);
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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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protected:
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//--- create dependent controls
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virtual bool CreateEdit(void);
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virtual bool CreateInc(void);
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virtual bool CreateDec(void);
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//--- handlers of the dependent controls events
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virtual bool OnClickInc(void);
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virtual bool OnClickDec(void);
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//--- internal event handlers
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virtual bool OnChangeValue(void);
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};
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//+------------------------------------------------------------------+
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//| Common handler of chart events |
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//+------------------------------------------------------------------+
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EVENT_MAP_BEGIN(CSpinEdit)
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ON_EVENT(ON_CLICK,m_inc,OnClickInc)
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ON_EVENT(ON_CLICK,m_dec,OnClickDec)
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EVENT_MAP_END(CWndContainer)
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//+------------------------------------------------------------------+
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//| Constructor |
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//+------------------------------------------------------------------+
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CSpinEdit::CSpinEdit(void) : m_min_value(0),
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m_max_value(0),
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m_value(0)
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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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CSpinEdit::~CSpinEdit(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 CSpinEdit::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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//--- check height
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if(y2-y1<CONTROLS_SPIN_MIN_HEIGHT)
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return(false);
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//--- call method of the parent class
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if(!CWndContainer::Create(chart,name,subwin,x1,y1,x2,y2))
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return(false);
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//--- create dependent controls
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if(!CreateEdit())
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return(false);
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if(!CreateInc())
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return(false);
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if(!CreateDec())
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return(false);
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Set current value |
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//+------------------------------------------------------------------+
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bool CSpinEdit::Value(int value)
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{
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//--- check value
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if(value<m_min_value)
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value=m_min_value;
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if(value>m_max_value)
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value=m_max_value;
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//--- if value was changed
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if(m_value!=value)
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{
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m_value=value;
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//--- call virtual handler
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return(OnChangeValue());
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}
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//--- value has not been changed
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return(false);
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}
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//+------------------------------------------------------------------+
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//| |
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//+------------------------------------------------------------------+
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bool CSpinEdit::Save(const int file_handle)
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{
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//--- check
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if(file_handle==INVALID_HANDLE)
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return(false);
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//---
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FileWriteInteger(file_handle,m_value);
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| |
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//+------------------------------------------------------------------+
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bool CSpinEdit::Load(const int file_handle)
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{
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//--- check
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if(file_handle==INVALID_HANDLE)
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return(false);
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//---
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if(!FileIsEnding(file_handle))
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Value(FileReadInteger(file_handle));
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Set minimum value |
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//+------------------------------------------------------------------+
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void CSpinEdit::MinValue(const int value)
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{
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//--- if value was changed
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if(m_min_value!=value)
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{
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m_min_value=value;
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//--- adjust the edit value
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Value(m_value);
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}
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}
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//+------------------------------------------------------------------+
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//| Set maximum value |
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//+------------------------------------------------------------------+
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void CSpinEdit::MaxValue(const int value)
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{
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//--- if value was changed
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if(m_max_value!=value)
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{
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m_max_value=value;
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//--- adjust the edit value
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Value(m_value);
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}
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}
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//+------------------------------------------------------------------+
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//| Create the edit field |
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//+------------------------------------------------------------------+
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bool CSpinEdit::CreateEdit(void)
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{
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//--- create
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if(!m_edit.Create(m_chart_id,m_name+"Edit",m_subwin,0,0,Width(),Height()))
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return(false);
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if(!m_edit.Text(""))
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return(false);
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if(!m_edit.ReadOnly(true))
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return(false);
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if(!Add(m_edit))
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return(false);
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Create the "Increment" button |
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//+------------------------------------------------------------------+
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bool CSpinEdit::CreateInc(void)
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{
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//--- right align button (try to make equal offsets from top and bottom)
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int x1=Width()-(CONTROLS_BUTTON_SIZE+CONTROLS_SPIN_BUTTON_X_OFF);
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int y1=(Height()-2*CONTROLS_SPIN_BUTTON_SIZE)/2;
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int x2=x1+CONTROLS_BUTTON_SIZE;
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int y2=y1+CONTROLS_SPIN_BUTTON_SIZE;
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//--- create
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if(!m_inc.Create(m_chart_id,m_name+"Inc",m_subwin,x1,y1,x2,y2))
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return(false);
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if(!m_inc.BmpNames("::res\\SpinInc.bmp"))
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return(false);
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if(!Add(m_inc))
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return(false);
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//--- property
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m_inc.PropFlags(WND_PROP_FLAG_CLICKS_BY_PRESS);
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Create the "Decrement" button |
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//+------------------------------------------------------------------+
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bool CSpinEdit::CreateDec(void)
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{
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//--- right align button (try to make equal offsets from top and bottom)
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int x1=Width()-(CONTROLS_BUTTON_SIZE+CONTROLS_SPIN_BUTTON_X_OFF);
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int y1=(Height()-2*CONTROLS_SPIN_BUTTON_SIZE)/2+CONTROLS_SPIN_BUTTON_SIZE;
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int x2=x1+CONTROLS_BUTTON_SIZE;
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int y2=y1+CONTROLS_SPIN_BUTTON_SIZE;
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//--- create
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if(!m_dec.Create(m_chart_id,m_name+"Dec",m_subwin,x1,y1,x2,y2))
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return(false);
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if(!m_dec.BmpNames("::res\\SpinDec.bmp"))
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return(false);
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if(!Add(m_dec))
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return(false);
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//--- property
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m_dec.PropFlags(WND_PROP_FLAG_CLICKS_BY_PRESS);
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//--- succeed
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Handler of click on the "increment" button |
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//+------------------------------------------------------------------+
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bool CSpinEdit::OnClickInc(void)
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{
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//--- try to increment current value
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return(Value(m_value+1));
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}
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//+------------------------------------------------------------------+
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//| Handler of click on the "decrement" button |
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//+------------------------------------------------------------------+
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bool CSpinEdit::OnClickDec(void)
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{
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//--- try to decrement current value
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return(Value(m_value-1));
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}
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//+------------------------------------------------------------------+
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//| Handler of changing current state |
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//+------------------------------------------------------------------+
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bool CSpinEdit::OnChangeValue(void)
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{
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//--- copy text to the edit field edit
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m_edit.Text(IntegerToString(m_value));
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//--- send notification
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EventChartCustom(CONTROLS_SELF_MESSAGE,ON_CHANGE,m_id,0.0,m_name);
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//--- handled
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return(true);
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}
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//+------------------------------------------------------------------+
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