EasyAndFastMod/Controls/TreeItem.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                                     TreeItem.mqh |
//|                        Copyright 2015, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#include "..\Element.mqh"
#include "Button.mqh"
//+------------------------------------------------------------------+
//| ;0AA 4;O A>740=8O ?C=:B0 4@52>284=>3> A?8A:0                    |
//+------------------------------------------------------------------+
class CTreeItem : public CButton
  {
private:
   //--- BABC? 4;O AB@5;:8 (?@87=0:0 =0;8G8O A?8A:0)
   int               m_arrow_x_gap;
   //--- "8? ?C=:B0
   ENUM_TYPE_TREE_ITEM m_item_type;
   //--- =45:A ?C=:B0 2 >1I5< A?8A:5
   int               m_list_index;
   //--- #@>25=L C7;0
   int               m_node_level;
   //--- B>1@0605<K9 B5:AB ?C=:B0
   string            m_item_text;
   //--- !>AB>O=85 A?8A:0 ?C=:B0 (>B:@KB/A2Q@=CB)
   bool              m_item_state;
   //---
public:
                     CTreeItem(void);
                    ~CTreeItem(void);
   //--- 5B>4K 4;O A>740=8O ?C=:B0 4@52>284=>3> A?8A:0
   bool              CreateTreeItem(const int x_gap,const int y_gap,const ENUM_TYPE_TREE_ITEM type,
                                    const int list_index,const int node_level,const string text,const bool item_state);
   //---
private:
   void              InitializeProperties(const int x_gap,const int y_gap,const ENUM_TYPE_TREE_ITEM type,
                                          const int list_index,const int node_level,const string text,const bool item_state);
   //---
public:
   //--- (1) !>AB>O=85 ?C=:B0 (A2Q@=CB/@072Q@=CB), (2) B8? ?C=:B0
   void              ItemState(const int state);
   bool              ItemState(void) const { return(m_item_state); }
   ENUM_TYPE_TREE_ITEM Type(void)    const { return(m_item_type);  }
   //--- BABC? 4;O AB@5;:8
   int               ArrowXGap(const int node_level);
   int               ArrowXGap(void) const { return(m_arrow_x_gap); }
   //--- 1=>2;5=85 :>>@48=0B 8 H8@8=K
   void              UpdateX(const int x);
   void              UpdateY(const int y);
   void              UpdateWidth(const int width);
   //---
public:
   //--- 1@01>BG8: A>1KB89 3@0D8:0
   virtual void      OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam);
   //---  8AC5B M;5<5=B
   virtual void      Draw(void);
   //---
private:
   //---  8AC5B :0@B8=:C
   virtual void      DrawImage(void);
  };
//+------------------------------------------------------------------+
//| Constructor                                                      |
//+------------------------------------------------------------------+
CTreeItem::CTreeItem(void) : m_node_level(0),
                             m_arrow_x_gap(5),
                             m_item_type(TI_SIMPLE)
  {
//--- !>E@0=8< 8<O :;0AA0 M;5<5=B0 2 107>2>< :;0AA5
   CElementBase::ClassName(CLASS_NAME);
//--- C=:B 1C45B 2K?0;0NI8< M;5<5=B><
   CElementBase::IsDropdown(true);
  }
//+------------------------------------------------------------------+
//| Destructor                                                       |
//+------------------------------------------------------------------+
CTreeItem::~CTreeItem(void)
  {
  }
//+------------------------------------------------------------------+
//| 1@01>BG8: A>1KB89                                               |
//+------------------------------------------------------------------+
void CTreeItem::OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam)
  {
//--- K9B8, 5A;8 3;02=K9 M;5<5=B =54>ABC?5=
   if(!m_main.CElementBase::IsAvailable())
      return;
//--- 1@01>B0BL A>1KB85 2 107>2>< :;0AA5
   CButton::OnEvent(id,lparam,dparam,sparam);
  }
//+------------------------------------------------------------------+
//| !>740QB ?C=:B 4@52>284=>3> A?8A:0                                |
//+------------------------------------------------------------------+
bool CTreeItem::CreateTreeItem(const int x_gap,const int y_gap,const ENUM_TYPE_TREE_ITEM type,
                               const int list_index,const int node_level,const string text,const bool item_state)
  {
//--- K9B8, 5A;8 =5B C:070B5;O =0 3;02=K9 M;5<5=B
   if(!CElement::CheckMainPointer())
      return(false);
//--- =8F80;870F8O A2>9AB2
   InitializeProperties(x_gap,y_gap,type,list_index,node_level,text,item_state);
//--- #AB0=>28BL :0@B8=:8, 5A;8 ?C=:B 8<55B 2K?040NI89 A?8A>:
   if(m_item_type==TI_HAS_ITEMS)
     {
      CElement::AddImagesGroup(m_arrow_x_gap,2);
      CElement::AddImage(1,RESOURCE_DOWN_THICK_BLACK);
      CElement::AddImage(1,RESOURCE_RIGHT_THICK_BLACK);
      //--- K1@0BL A>>B25BAB2CNI55 87>1@065=85
      CButton::ChangeImage(1,(m_item_state)? 1 : 0);
     }
//--- !2>9AB20
   CButton::TwoState(true);
//--- !>74048< M;5<5=B C?@02;5=8O
   if(!CButton::CreateButton(text,x_gap,y_gap))
      return(false);
//---
   return(true);
  }
//+------------------------------------------------------------------+
//| =8F80;870F8O A2>9AB2                                            |
//+------------------------------------------------------------------+
void CTreeItem::InitializeProperties(const int x_gap,const int y_gap,const ENUM_TYPE_TREE_ITEM type,
                                     const int list_index,const int node_level,const string text,const bool item_state)
  {
   m_x           =CElement::CalculateX(x_gap);
   m_y           =CElement::CalculateY(y_gap);
   m_item_type   =type;
   m_list_index  =list_index;
   m_node_level  =node_level;
   m_item_text   =text;
   m_item_state  =item_state;
   m_label_text  =text;
//--- !2>9AB20 ?> C<>;G0=8N
   m_back_color           =m_main.BackColor();
   m_back_color_hover     =C'229,243,255';
   m_back_color_pressed   =C'204,232,255';
   m_border_color         =m_main.BackColor();
   m_border_color_hover   =m_back_color_hover;
   m_border_color_pressed =C'153,209,255';
   m_label_color          =clrBlack;
   m_label_color_hover    =clrBlack;
   m_label_color_pressed  =clrBlack;
   m_label_x_gap          =(m_label_x_gap!=WRONG_VALUE)? m_icon_x_gap+m_label_x_gap : m_icon_x_gap+22;
   m_label_y_gap          =4;
//--- BABC?K >B :@09=59 B>G:8
   CElementBase::XGap(x_gap);
   CElementBase::YGap(y_gap);
  }
//+------------------------------------------------------------------+
//| #AB0=>2:0 A>AB>O=8O ?C=:B0 (A2Q@=CB/@072Q@=CB)                   |
//+------------------------------------------------------------------+
void CTreeItem::ItemState(const int state)
  {
   m_item_state=state;

  }
//+------------------------------------------------------------------+
//| BABC? 4;O AB@5;:8                                               |
//+------------------------------------------------------------------+
int CTreeItem::ArrowXGap(const int node_level)
  {
   return((m_arrow_x_gap=(node_level>0)? (12*node_level)+5 : 5));
  }
//+------------------------------------------------------------------+
//| 1=>2;5=85 :>>@48=0BK X                                          |
//+------------------------------------------------------------------+
void CTreeItem::UpdateX(const int x)
  {
//--- 1=>2;5=85 >1I8E :>>@48=0B 8 >BABC?0 >B :@09=59 B>G:8
   CElementBase::X(CElement::CalculateX(x));
   CElementBase::XGap(x);
//--- >>@48=0BK 8 >BABC?
   m_canvas.X(x);
   m_canvas.XGap(x);
  }
//+------------------------------------------------------------------+
//| 1=>2;5=85 :>>@48=0BK Y                                          |
//+------------------------------------------------------------------+
void CTreeItem::UpdateY(const int y)
  {
//--- 1=>2;5=85 >1I8E :>>@48=0B 8 >BABC?0 >B :@09=59 B>G:8
   CElementBase::Y(CElement::CalculateY(y));
   CElementBase::YGap(y);
//--- >>@48=0BK 8 >BABC?
   m_canvas.Y(y);
   m_canvas.YGap(y);
  }
//+------------------------------------------------------------------+
//| 1=>2;5=85 H8@8=K                                                |
//+------------------------------------------------------------------+
void CTreeItem::UpdateWidth(const int width)
  {
//--- (8@8=0 D>=0
   CElementBase::XSize(width);
   m_canvas.XSize(width);
   m_canvas.Resize(width,m_y_size);
  }
//+------------------------------------------------------------------+
//|  8AC5B M;5<5=B                                                   |
//+------------------------------------------------------------------+
void CTreeItem::Draw(void)
  {
//--- 0@8A>20BL D>=
   CButton::DrawBackground();
//--- 0@8A>20BL :0@B8=:C
   if(m_item_type==TI_HAS_ITEMS)
      CTreeItem::DrawImage();
   else
      CButton::DrawImage();
//--- 0@8A>20BL B5:AB
   CElement::DrawText();
  }
//+------------------------------------------------------------------+
//|  8AC5B :0@B8=:C                                                  |
//+------------------------------------------------------------------+
void CTreeItem::DrawImage(void)
  {
//--- ?@545;8< 8=45:A
   uint image_index=(m_item_state)? 0 : 1;
//--- !>E@0=8BL 8=45:A 2K1@0==>3> 87>1@065=8O
   CElement::ChangeImage(1,image_index);
//---  8AC5< :0@B8=:C
   CElement::DrawImage();
  }
//+------------------------------------------------------------------+