Problems centering text

[jaspercayne 0]

I am having issues with a text API that I am writing and am looking for input from more experienced coders. The problem I am currently facing is with my centering method. If be used to center text to the full screen width it works great, if I am trying to center text in a smaller portion of the screen that is offset towards either edge, it fails miserably. API-in-progress below:

--[[
Text utilities API
by jaspercayne
A collection of functions to work with text
]]--
local textTools = {}

local component = require("component")
local term = require("term")
local text = require("text")
local gpu = component.gpu
local screenWidth, screenHeight = gpu.getResolution()



-- Calculates appropriate amount of padding to center a string
function textTools.centerText(target, fromx, tox)
    local calculatedPadding = ((fromx+tox)/2) + (string.len(target)/2)
    local centeredText = tostring(text.padLeft(target, calculatedPadding))
    term.write(centeredText)
end

-- Aligns a string to the right of the screen
function textTools.alignRight(target)
    local calculatedPadding = screenWidth -- string.len(target)
    local alignedText = tostring(text.padLeft(target, calculatedPadding))
    term.write(alignedText)
end

-- Wraps a given string to the width of the screen
function textTools.wrapToScreen(target)
    local wrappedText = tostring(text.wrap(target,string.len(target),screenWidth))
    term.write(wrappedText)
end

return textTools

I am certain that the main issue is from trying to pull the absolute x,y coords and derive a center point from that, but my brain just isn't putting together what the centerText function should look like... Help? Anyone?

[Molinko 43]

function textTools.centerText(_str, x1, x2)
    term.write( text.padLeft(_str, x1 + math.floor((x2 - x1) / 2) - math.floor(#_str / 2)) )
end

I think that'll do what you need bud.