//@version=5

//======================================================
// Adapted ADX DI Histogram indicator with Filters
// Version 5.2.B
// Created by GreenDragon
//======================================================
// Tip jar - any help gratefully accepted
//     ETH 0x3D07FD9253479f76bC19bfDba594ed76C2F9E973
//     BTC 3GDbgSvKiHkAeKuS1CMWASSgmSmK6R6Cgs
//======================================================
//
// Description
// -----------
// This is a lower indicator that does not shows below main coin graph
//     to see ADX and DI as a Histogram.
// If you use the Dark theme set it in settings.
//  1. ADX Filter allows for the setting of DI Length (default 14) and ADX Threshold (Default 25)
//     NQ prefers 21, 31 - now using NQ preference as default
//=====================================================================

indicator('GD-ADX/DI Histogram V5.2.B', shorttitle='GD-ADXDI-Hist V5.2.B', overlay=false)

// set main inputs
//    *************************** General Settings ******************************* ")
dark  = input.bool(false, title='       Using Dark Theme', group='General Settings')
//    ******************************** ADX Settings ******************************** ")
diLen = input.int(21, title='              DI Length', group='ADX Settings')
th    = input.int(31, title='              Trend Threshold', group='ADX Settings')

src = close
noCandles = 2

// ADX and DI - function
[diplus, diminus, ADX] = ta.dmi(diLen, diLen)
di = th + diplus - diminus

// set adx colours
cr = color.gray
cg = color.gray
cr := ADX <= 22 ? color.new(color.green, 80) : ADX <= 34 ? color.new(color.green, 60) : ADX <= 46 ? color.new(color.green, 35) : ADX <= 58 ? color.new(color.green, 5) : ADX <= 70 ? color.new(color.green, 0) : color.new(color.green, 0)
cg := ADX <= 22 ? color.new(color.red, 80) : ADX <= 34 ? color.new(color.red, 60) : ADX <= 46 ? color.new(color.red, 35) : ADX <= 58 ? color.new(color.red, 5) : ADX <= 70 ? color.new(color.red, 0) : color.new(color.red, 0)

/////////////////////////////////////////////////////
// plot the Threshold horizontal based on dark choice
// ADX based on Red/Green
darkColour    = dark == false ? color.gray : color.white
adxRising     = ta.rising(ADX, noCandles)
adxFalling    = ta.falling(ADX, noCandles)
diRising      = ta.rising(di, noCandles)
diFalling     = ta.falling(di, noCandles)
plotAdxColour = adxRising ? color.green : adxFalling ? color.red : color.gray
plotDiColour  = diRising ? color.green : diFalling ? color.red : color.gray

plot(th, color=darkColour, linewidth=2, title='Threshold')
plot(di, style=plot.style_columns, linewidth=6, color=di >= th ? cr : cg, histbase=th, title='DI-Hist')
plot(di, style=plot.style_line, linewidth=1, color=plotDiColour, histbase=th, title='DI-Line')
plot(ADX, color=plotAdxColour, linewidth=2, title='ADX')