GrapichsByLeo/Histogram/Eje/Ejes.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                                         Grid.mqh |
//|                                  Copyright 2025, Niquel Mendoza. |
//|                     https://www.mql5.com/es/users/nique_372/news |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, Niquel Mendoza."
#property link      "https://www.mql5.com/es/users/nique_372/news"
#property strict

#ifndef GRAPHICS_HISTOGRAM_EJE_EJES_MQH_BY_LEO
#define GRAPHICS_HISTOGRAM_EJE_EJES_MQH_BY_LEO


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
#include "..\\..\\PartInf\\ParteInf.mqh"
#include "..\\..\\General\\TextoCanvas.mqh"

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
const string DoubleToStrPrefixArrFormats[5] = {"%.*f", "%.*f K", "%.*f M", "%.*f B", "%.*f T"};
//+------------------------------------------------------------------+
string DoubleToStrPrefix(double value, int8_t decimals)
 {
  const double abs_val = MathAbs(value);
  int idx = 0;
  double v = value;

  if(abs_val >= 1000000000000.0)
   {
    v /= 1000000000000.0;
    idx = 4;
   }
  else
    if(abs_val >= 1000000000.0)
     {
      v /= 1000000000.0;
      idx = 3;
     }
    else
      if(abs_val >= 1000000.0)
       {
        v /= 1000000.0;
        idx = 2;
       }
      else
        if(abs_val >= 1000.0)
         {
          v /= 1000.0;
          idx = 1;
         }
  return StringFormat(DoubleToStrPrefixArrFormats[idx], decimals, v);
 }


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
struct HistogramEjeLineSection
 {
  double             value;
  string             str_val;
  int                init;  // X - Y
  int                c1; // Y1 -X1
  int                c2; // Y2  - X2

  int                c_text;
 };

//--- EJe de X
struct HistogramEjeLineBasic
 {
  int                init;
  int                c1;
  int                c2;
  uint               clr;
 };

//---


//--- Eje Y con multiples secciones
// Obligtorios
#define HIST_EJE_FLAG_INIT_GENERAL 1
#define HIST_EJE_FLAG_INIT_LINE 2


// General
#define HIST_EJE_FLAG_INIT_TITULO 4

/*
    X1
 Y1 
*/
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
typedef string(*HistFunctionFormatDouble)(double value, int8_t decimals);
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class CHistogramEjeLine
 {
protected:
  uint               m_init_flags;
  CCanvasCustom*     m_canvas;

  uint               m_clr_clean;

  //---
  CTextCanvas*       m_titulo; // Titulo del eje
  int                m_titulo_gap_px; // Gap respecto al titulok

  //--- Linea general
  int                m_x;
  int                m_y;
  int                m_c2; // Cordanada 2
  int                m_size_line_sections;
  uint               m_clr;

  //--- Secciones
  int                m_secciones_size;
  HistogramEjeLineSection m_secciones[];
  int                m_section_size_px; // Tama<EFBFBD>o en picxlex
  int                m_section_size_gap_value; // Gap entre la linea y el texto
  int                m_sections_font_size;
  string             m_sections_font;

  uint               m_sections_alingment;
  int8_t             m_sections_decimals;
  HistFunctionFormatDouble m_function_val_to_str;

  //--- Valores
  double             m_max_value;
  double             m_min_value;
  double             m_change_value;

  // 0 se ubica a la izquierda lineas a oiuiqer, 1 se ubica a la derecha lineas a la derecha
  int                m_mode_line;
  bool               m_use_change_value;


  //---
  virtual void       TituloActulize() = 0;
  virtual void       RecalculeAndDrawSections() = 0;
  virtual void       RedrawSections() = 0;
  virtual void       OnNewFunctionFormat() = 0;
  virtual void       OnInitialize() = 0;

public:
                     CHistogramEjeLine();
                    ~CHistogramEjeLine();

  //--- Inicializa la clase (clr = linevertial tamibne las lines de las sessionces y texto de cada seccion)
  void               Init(CCanvasCustom* c, int x, int y, int size_line, uint clr_line_and_text_line, int mode);
  void               CreateSections(int inital_sections, double max_value, double min_value, bool use_change_val, double change_value,
                                    int section_gap_value, int sections_size_px, int8_t decimals, int fontsize = 0, string font = NULL);
  virtual void       CreateTitulo(const string &txt, uint clr, int gap_titulo, int fontsize = 0, string font = NULL, uint flagtext = UINT_MAX) = 0;

  //--- Limpa los pixles ocupados por la linea dejee, secciones y texto de cada sesion (menos el titulo), solo linmepa pxieles, no cambia el valores
  virtual void       CleanPixelsSections() = 0;

  //--- Secciones
  //- Funcion de formateo
  void               SectionsFormatStrFunction(HistFunctionFormatDouble new_function, bool redraw = false);
  __forceinline HistFunctionFormatDouble SectionsFormatStrFunction() const { return m_function_val_to_str; }

  //- Tama<EFBFBD>o de cada "line" de valor
  void               SectionsUniqueSizeInPixels(int new_value, bool redraw = false);
  __forceinline int  SectionsUniqueSizeInPixels() const { return m_section_size_px; }

  //- Fontsize de los textos de la linea del eje
  void               SectionsFontSize(int new_value, bool redraw = false);
  __forceinline int  SectionsFontSize() const { return m_sections_font_size;}

  //- Font de los textos de la linea de eje
  void               SectionsFont(const string& new_value, bool redraw = false);
  __forceinline string SectionsFont() const  { return m_sections_font;}

  //- Numero de seccions de la linea del eje
  void               SectionsSize(int new_value, bool redraw = false);
  __forceinline int  SectionsSize() const { return m_secciones_size; }

  //- COlor de (lineas de sccion + texto de linea de seccion + line general)
  void               SectionsColor(uint new_clr, bool redraw = false);
  __forceinline uint SectionsColor() const { return m_clr; }

  //- Maximo de la linea del eje
  void                 Max(double max, bool redraw = false);
  __forceinline double Max() const { return m_max_value; }

  //- Minimo de la linea del eje
  void                 Min(double min, bool redraw = false);
  __forceinline double Min() const { return m_min_value; }

  //- Valor de cambio
  void                 ChangeValue(double new_value, bool redraw = false);
  __forceinline double ChangeValue() const { return m_change_value; }
  __forceinline bool ChangeValueEnable() const { return m_use_change_value; }

  //- Setear max, min, y chanbge_value opcional
  void               SetNewValues(double max, double min, double change_value, bool redraw = false);


  //--- Cordenadas y tama<EFBFBD>o
  //- X
  virtual void       X(int new_value, bool redraw = false) = 0;
  __forceinline int  X() const { return m_x; }

  //- Y
  virtual void       Y(int new_value, bool redraw = false) = 0;
  __forceinline int  Y() const { return m_y; }

  //- LineSize
  virtual void       LineSize(int new_value, bool redraw = false) = 0;
  __forceinline int  LineSize() const { return m_size_line_sections; }

  //- Set cordenadas
  virtual void       SetCordinates(int x, int y, int line_size, bool redraw = false) = 0;

  //---
  __forceinline int  ModeLine() const { return m_mode_line; }

  //---
  void               CleanColor(uint new_value) { m_clr_clean = new_value;}
  __forceinline uint CleanColor() const { return m_clr_clean; }


  //---
  CTextCanvas*       TituloGetPointer() { return m_titulo;}
 };


//+------------------------------------------------------------------+
//| Macros                                                           |
//+------------------------------------------------------------------+
#define HIST_EJE_IS_INIT_GENERAL  ((m_init_flags&HIST_EJE_FLAG_INIT_GENERAL) != 0)
#define HIST_EJE_IS_INIT_SECTIONS ((m_init_flags&HIST_EJE_FLAG_INIT_LINE) != 0)
#define HIST_EJE_IS_INIT_TITULO   ((m_init_flags&HIST_EJE_FLAG_INIT_TITULO) != 0)

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
CHistogramEjeLine::CHistogramEjeLine()
  : m_init_flags(0), m_titulo(NULL), m_canvas(NULL), m_use_change_value(false)
 {
  ArrayResize(m_secciones, 0);
  m_function_val_to_str = DoubleToStrPrefix; // Funcion por defecto
 }

//+------------------------------------------------------------------+
CHistogramEjeLine::~CHistogramEjeLine()
 {
  if(CheckPointer(m_titulo) == POINTER_DYNAMIC)
   {
    delete m_titulo;
   }
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::Init(CCanvasCustom* c, int x, int y, int size_line, uint clr_line_and_text_line, int mode)
 {
  if(HIST_EJE_IS_INIT_GENERAL)
    return;

//---
  m_canvas = c;
  m_init_flags |= HIST_EJE_FLAG_INIT_GENERAL;
  m_size_line_sections = size_line;
  m_x = x;
  m_y = y;

  m_clr = clr_line_and_text_line;
  m_mode_line = mode;

//--- Seteamos alingement
  OnInitialize();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::CreateSections(int inital_sections, double max_value, double min_value, bool use_change_val, double change_value,
                                       int section_gap_value, int sections_size_px, int8_t decimals, int fontsize = 0, string font = NULL)
 {
  if(HIST_EJE_IS_INIT_SECTIONS)
    return;
/*
 Como siempre si el fontsize es 0 o font es null, se usa el de canvas, asi que si el usuario ya tiene en fontseteado en canvas (usa el de la clase CHistogram)
 , peude dejar los parametros como esta, pero si quiere un font o fontsize cusotm para los ejes le da un valor
*/
//---
  int is = inital_sections;
  is += 1; // Agregamos el maximo
  is += 1; // Agregamos al minimo
  is += int(use_change_val); // Si use es true=1, se le sumara 1

//---
  m_init_flags |= HIST_EJE_FLAG_INIT_LINE;
  m_max_value = max_value;
  m_min_value = min_value;
  m_change_value = change_value;
  m_sections_font = font != NULL ? font : m_canvas.FontNameGet();
  m_sections_font_size = fontsize > 0 ? fontsize : m_canvas.FontSizeGet();
  m_section_size_gap_value = section_gap_value;

  m_sections_decimals = decimals;
  m_use_change_value = use_change_val;
  m_section_size_px = sections_size_px;
  m_secciones_size = is;
  ArrayResize(m_secciones, m_secciones_size);

//---
  if(!use_change_val)
    m_change_value = DBL_MAX; // Lo ponemos a un valor invalido

//---
  RecalculeAndDrawSections();

//---
// int xmin =   m_section_size_gap_value + m_sections_font_size;
 }


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::ChangeValue(double new_value, bool redraw = false)
 {
//---
  if(!m_use_change_value)
    return;

//---
  CleanPixelsSections();

//---
  m_change_value = new_value;


//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::Min(double min, bool redraw = false)
 {
//---
  CleanPixelsSections();

//---
  m_min_value = min;

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::Max(double max, bool redraw = false)
 {
//---
  CleanPixelsSections();

//---
  m_max_value = max;

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SetNewValues(double max, double min, double change_value, bool redraw = false)
 {
//---
  CleanPixelsSections();

//---
  m_min_value = min;
  m_max_value = max;
  m_change_value = change_value;

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsColor(uint new_clr, bool redraw = false)
 {
//---
  m_clr = new_clr;

//---
  RedrawSections();

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsSize(int new_value, bool redraw = false)
 {
//---
  if(new_value < 0)
    return;

//---
  int nv = new_value + 2 + int(m_use_change_value); // se le suma 2 del minimo y el maximo, ademas de 1 si es que se usa change_value

//---
  CleanPixelsSections();

//---
  m_secciones_size = nv;
  ArrayResize(m_secciones, m_secciones_size);

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsFont(const string &new_value, bool redraw = false)
 {
//---
  CleanPixelsSections(); // Limpieza previa

//---
  m_sections_font = new_value;

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsFontSize(int new_value, bool redraw = false)
 {
//---
  CleanPixelsSections(); // Limpieza previa

//---
  m_sections_font_size = new_value;

//--- Dibujamos las secciones
  RecalculeAndDrawSections(); // Secciones-Line
// Cuidado un fontsize mas grande haria que el titulo se dezplaze myucho, hacinedo que posibledmne desapareza
  TituloActulize();

//---
  if(redraw)
    m_canvas.Update();
 }


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsUniqueSizeInPixels(int new_value, bool redraw = false)
 {
//---
  CleanPixelsSections(); // Limpieza previa

//---
  m_section_size_px = new_value;

//--- Dibujamos las secciones
// Cuidado un ancho mas grande haria que el titulo se dezplaze myucho, hacinedo que posibledmne desapareza
  RecalculeAndDrawSections(); // Secciones-Line
  TituloActulize();

//---
  if(redraw)
    m_canvas.Update();
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramEjeLine::SectionsFormatStrFunction(HistFunctionFormatDouble new_function, bool redraw = false)
 {
//---
  CleanPixelsSections();

//---
  m_function_val_to_str = new_function;

//---
// Cuidado con el titulo un texto mas gradne podira hacer colisiones, esto se podria ajustar auto auqnue es mas responsabidliad del usuario
  OnNewFunctionFormat();

//---
  if(redraw)
    m_canvas.Update();
 }



#endif
//+------------------------------------------------------------------+