Renko Candles Overlay

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © LonesomeTheBlue
// ------------------------------------------------------------------------------------------------
// Original author:  LonesomeTheBlue
// Original title:   Renko Candles Overlay
// Licence:          MPL-2.0 (the header above is the original notice, kept verbatim)
// Pine version:     5
// Fetched:          2026-10-12
// Ported to FloScript by FloSignals; modifications under MPL-2.0.
// Converter:        @flosignals/floscript 0.1.0, strict mode, score 100/100
// ------------------------------------------------------------------------------------------------
//@floscript=1
//@version=5

indicator("Renko Candles Overlay", overlay=true, max_bars_back=2001, max_boxes_count=500)
mode = input.string(title="Method", defval='ATR/2', options=['Traditional', 'ATR', 'ATR/2', 'ATR/4', 'Percentage'], group='SETUP')
modevalue = input.int(title=" Atr Period", defval=14, minval=1, group='SETUP')
tboxsize = input.float(title=" Brick Size", defval=10.0, minval=0.000000000000001, group='SETUP')
percentagebs = input.float(title=" Percentage %", defval=0.1, minval=0.00001, step=0.1, group='SETUP')
period = input.int(defval=140, title=" Number of Bricks", minval=10, maxval=280, group='SETUP')
putlabels = input.bool(defval=true, title="Levels & Lines for new Bricks", inline="labels")
linestyle = input.string(defval='dashed', title="", options=['dashed', 'dotted', 'solid'], inline="labels")

colup = input.color(defval=#5b9cf6, title=" Color Up", group='BRICKS')
coldn = input.color(defval=#0c3299, title=" Color Down", group='BRICKS')
coluc = input.color(defval=color.gray, title=" Unconfirmed", group='BRICKS')
bwidth = input.int(defval=2, title=" Width", minval=1, maxval=10, group='BRICKS')
bcolup = input.color(defval=color.lime, title=" Color Up", group='BORDERS')
bcoldn = input.color(defval=color.red, title=" Color Down", group='BORDERS')
borderwidth = input.int(defval=1, title=" Width", minval=0, maxval=2, group='BORDERS')
changebrol = input.bool(defval=false, title="Change Bar Color", group="CANDLES")
barcolup = input.color(defval=color.lime, title=" Color Up", group="CANDLES")
barcoldn = input.color(defval=color.red, title=" Color Down", group="CANDLES")

get_b_size(value) =>
    var num = math.pow(10, str.length(str.tostring(syminfo.mintick)) - 2)
    float ret = value
    if na(ret)
        ret := ta.tr(true)

    if ret < 1
        ret := math.round(ret * num) / num
    else
        pw = ret >= 10 ? math.pow(10, math.max(str.length(array.get(str.split(str.tostring(ret), '.'), 0)) - 2, 1)) : 1
        ret := math.round(ret / pw) * pw
    math.max(ret, syminfo.mintick)

// calculate brick size
float boxsize = mode == 'ATR' ? get_b_size(ta.atr(modevalue)) : mode == 'ATR/2' ? math.max(get_b_size(ta.atr(modevalue)) / 2, syminfo.mintick) : mode == 'ATR/4' ? math.max(get_b_size(ta.atr(modevalue)) / 4, syminfo.mintick) : mode == 'Percentage' ? get_b_size(percentagebs * close / 100) : tboxsize

addbricks(rclose, numbrick, start, bsize) =>
    for x = 1 to numbrick
        array.unshift(rclose, start + x * bsize)

var float boxs = boxsize
var int trend = 0
var rclose = array.new_float(1, math.floor(open / boxs) * boxs)

float currentprice = close
float lastclose = array.get(rclose, 0)
int numcell = math.floor(math.abs(lastclose - currentprice) / boxs)
int unconfirmed = -1

if numcell > 0
    if trend == 0
        if numcell >= 2
            trend := lastclose < currentprice ? 1 : -1
            addbricks(rclose, numcell, lastclose, trend * boxs)
    else if lastclose * trend < currentprice * trend
        addbricks(rclose, numcell, lastclose, trend * boxs)
    else if numcell >= 2
        trend *= -1
        addbricks(rclose, numcell - 1, lastclose + trend * boxs, trend * boxs) // trend changed

    // change boxsize when trend changed
    if lastclose != array.get(rclose, 0)
        boxs := boxsize
        if not barstate.ishistory and barstate.isrealtime
            unconfirmed := numcell - (trend != trend[1] ? 1 : 0)

// delete old elements
while array.size(rclose) > period + 3
    array.pop(rclose)

if putlabels and trend != 0
    var hlstyle = linestyle == 'dashed' ? line.style_dashed : linestyle == 'dotted' ? line.style_dotted : line.style_solid
    up = trend == 1 ? array.get(rclose, 0) + boxs : array.get(rclose, 0) + boxs * 2
    dn = trend == 1 ? array.get(rclose, 0) - boxs * 2 : array.get(rclose, 0) - boxs
    var line upline = na
    line.delete(upline)
    var label uplabel = na
    label.delete(uplabel)
    var line dnline = na
    line.delete(dnline)
    var label dnlabel = na
    label.delete(dnlabel)
    upline := line.new(x1=bar_index, y1=up, x2=bar_index - 1, y2=up, color=color.gray, style=hlstyle, extend=extend.both)
    dnline := line.new(x1=bar_index, y1=dn, x2=bar_index - 1, y2=dn, color=color.gray, style=hlstyle, extend=extend.both)
    uplabel := label.new(x=bar_index + 10, y=up, text=str.tostring(up), color=colup, textcolor=color.black, style=label.style_label_down)
    dnlabel := label.new(x=bar_index + 10, y=dn, text=str.tostring(dn), color=coldn, textcolor=color.white, style=label.style_label_up)

if barstate.islast
    if array.size(rclose) >= 2
        var bricks = array.new_box(0)
        for x = 0 to array.size(bricks) > 0 ? array.size(bricks) - 1 : na
            box.delete(array.pop(bricks))

        int start = array.size(rclose) - 3
        for x = array.size(rclose) - 3 to 0
            if array.get(rclose, x) > array.get(rclose, x + 1) and array.get(rclose, x + 1) > array.get(rclose, x + 2) or array.get(rclose, x) < array.get(rclose, x + 1) and array.get(rclose, x + 1) < array.get(rclose, x + 2)
                start := x
                break
        int colnum = (start + 1) * bwidth
        int trnd = array.get(rclose, start) > array.get(rclose, start + 1) ? 1 : -1
        float lasttb = array.get(rclose, start)
        for x = start + 1 to 0
            oldtrnd = trnd
            trnd := array.get(rclose, x) > array.get(rclose, x + 1) ? 1 : -1
            col = x < unconfirmed ? coluc : trnd == 1 ? colup : coldn
            bcol = trnd == 1 ? bcolup : bcoldn
            topbottom = oldtrnd == trnd ? array.get(rclose, x + 1) : lasttb
            if bar_index - colnum - bwidth > 1 and colnum < 285
                array.push(bricks, box.new(left=bar_index - colnum, top=array.get(rclose, x), right=bar_index - colnum - bwidth, bottom=topbottom, border_width=borderwidth, border_color=bcol, bgcolor=col))
            colnum -= bwidth
            lasttb := topbottom

barcolor(changebrol ? (trend == 1 ? barcolup : barcoldn) : na)

alertcondition(trend[1] == -1 and trend == 1, title="Trend is UP", message="Trend is UP")
alertcondition(trend[1] == 1 and trend == -1, title="Trend is DOWN", message="Trend is DOWN")

This file is under the Mozilla Public License 2.0; it is a port of the original by LonesomeTheBlue, with the original licence header kept and the changes made for FloScript noted in the file.

• v22026-10-14

  Library refresh 2026-10-14

• v12026-10-12

  Library refresh 2026-10-12