//+------------------------------------------------------------------+
//|                                                     Vertical.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 HISTOGRAM_BARRA_VERTICAL_BY_LEO_MQH
#define HISTOGRAM_BARRA_VERTICAL_BY_LEO_MQH


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
#include "Base.mqh"

/*
Estructura de la barra:

 --------- X -------------
 |
 |    IY1
 | IX1
 |
 |    x1                   x2
 |    y1                   y1
 |
      ___________ ________
     |                   |
 Y   | FNeg     C  Fpos  |
     |___________ _______|

 |    x1                  x2
 |    y2                  y2
 |
 |
 |

//---
 IX1 = x1 inicial = m_barras_x1_init
 IY1 = y1 inicial = m_barras_y1_init
 FPos: valors positivos
 FNeg: valores negativos
 C: Corte
*/



//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class CHistogramConjuntoVertical : public CHistogramConjuntoNor
 {
private:
  // CHistogramConjuntoVertical(void);
  // ~CHistogramConjuntoVertical(void);
  void               OnNewValuesPosNegCorte(void) override;
  void               RecalculeBarCordinates() override;
  void               OnBarrasResize() override;
  void               ResizeBarra(HistogramBar& barra) override;
  void               CalculeTextCordinates() override final;
 };

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramConjuntoVertical::CalculeTextCordinates()
 {
  int x2 = m_barras_x1_init - m_label_gap_by_eje;
  int x1 = fmax(0, x2 - m_label.font_size + 1);
  m_label_function(x1, // X1 (fmax para prevenir bugs)
                   x2, // X2 (SE LE RESTA EL GAP )
                   m_barras_y1_init, // Y1
                   (m_barras_y1_init + m_barras_ancho_total), //Y2
                   m_label.x, m_label.y);
  ::TextSetFont(m_label.font, m_label.font_size);
  m_canvas.TextOuTF(m_label.x, m_label.y, m_label.value, m_label.clr, m_label.mode);
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramConjuntoVertical::ResizeBarra(HistogramBar &barra)
 {
  const int prev_h =  barra.x2 - barra.x1; // Si este valor es pos entonces la barra es positiva
  const int h = HISTOGRAM_CONJ_VALUE_TO_PIXEL(barra.value); // Calculaos el width de la barra
  if(h < 0 && prev_h >= 0) //nuevo neg, anteior pos
    barra.x1 -= 2; // Reduce las cordenas
  else
    if(h >= 0 && prev_h < 0) //nuevo pos, anteior neg
      barra.x1 += 2; // aumenta
  barra.x2 = barra.x1 + h;
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramConjuntoVertical::OnBarrasResize()
 {
  int y = m_barras_y1_init;
  for(int i = 0; i < m_barras_size; i++)
   {
    m_barras[i].y1 = y;
    y += m_barras_ancho_unico;
    m_barras[i].y2 = y;
    m_function_draw_rect(m_canvas, m_barras[i].x1, m_barras[i].y1, m_barras[i].x2, m_barras[i].y2, m_barras[i].clr);
    y += 1; // Siente inicio
   }
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CHistogramConjuntoVertical::RecalculeBarCordinates()
 {
//---
  int y = m_barras_y1_init;
  const int x = (m_barras_x1_init + m_barras_gap_eje) + 1; // caluloamso para positivo por defecto
  int new_x = 0;


  for(int i = 0; i < m_barras_size; i++)
   {
    const int h = HISTOGRAM_CONJ_VALUE_TO_PIXEL(m_barras[i].value); // Calculaos el width de la barra


    //---
    new_x = x;
    if(h < 0)
      new_x -= 2;// COnvertimos para negativo

    //---
    m_barras[i].y1 = y;
    y += m_barras_ancho_unico;
    m_barras[i].y2 = y;
    m_barras[i].x1 = new_x;
    m_barras[i].x2 = new_x + h;
    m_function_draw_rect(m_canvas, m_barras[i].x1, m_barras[i].y1, m_barras[i].x2, m_barras[i].y2, m_barras[i].clr);
    y += 1; // Siente inicio
   }
 }
//+------------------------------------------------------------------+
void CHistogramConjuntoVertical::OnNewValuesPosNegCorte(void)
 {
  int y = m_barras_y1_init;
  const int x = (m_barras_x1_init + m_barras_gap_eje) + 1; // caluloamso para positivo por defecto
  int new_x = 0;


  for(int i = 0; i < m_barras_size; i++)
   {
    const int prev_h =  m_barras[i].x2 - m_barras[i].x1; // Si este valor es pos entonces la barra es positiva
    const int h = HISTOGRAM_CONJ_VALUE_TO_PIXEL(m_barras[i].value); // Calculaos el width de la barra
   // const bool pos = prev_h >= 0 && h >= 0;

    //---
    new_x = x;
    if(h < 0)
      new_x -= 2; // COnvertimos para negativo

    // Caso1: Cambio de posicion limpiamos; pos a neg
    // Caso2: Cambio de posicion limpiamos: neg a pos
    // Caso3: Valor positivo, pero width menor
    // Caso4: Valor negativo, pero width menor

    //--- Clean
    //PrintFormat("[%d] prev h = %d | h = %d", i, prev_h, h);
   // if((prev_h > 0 && h < 0) || (prev_h < 0 && h > 0) || (pos && prev_h > h) || (!pos && h > prev_h)) // Limpiamos
     // m_function_draw_rect(m_canvas, m_barras[i].x1, m_barras[i].y1, m_barras[i].x2, m_barras[i].y2, m_clean_color);

    m_barras[i].y1 = y;
    y += m_barras_ancho_unico;
    m_barras[i].y2 = y;
    m_barras[i].x1 = new_x;
    m_barras[i].x2 = new_x + h;
    m_function_draw_rect(m_canvas, m_barras[i].x1, m_barras[i].y1, m_barras[i].x2, m_barras[i].y2, m_barras[i].clr);
    y += 1; // Siente inicio
   }
 }
//+------------------------------------------------------------------+
#endif
//+------------------------------------------------------------------+