smartButtons.lua

local API = {}
local button={}
--local l1 = h-3
--local l2 = h-4
--local l3 = h-5
--local l4 = h-6
--local l5 = h-7
--local l6 = h-8
--local l7 = h-9
local component = require("component")
local colors = require("colors")
local term = require("term")
local gpu = component.gpu
local w, h = gpu.getResolution()
local mlib = require "mathlib"
buttonStatus = nil

function API.write(num, color, text)
  num=tonumber(num)
  color=tonumber(color)
  if num > 0 and num < 8 then
    local val = num + 1
    gpu.setBackground(mlib["black"])
    gpu.setForeground(color)
--    x,y=term.getCursor()
    term.setCursor(3,h-val)
    term.write(text)
    gpu.setForeground(mlib["white"])
--    term.setCursor(x,y)
  end
end

function API.clearLine(line)
  local val
  local num = line
  if num and num > 0 and num < 8 then
    val = num + 2
    term.setCursor(3, h-val)
    gpu.setBackground(mlib["black"])
    for i=3,w-4 do gpu.set(i,h-val," ") end
  end
end

function API.clearTerm()
--  term.setCursor(3, h-8)
  gpu.setBackground(0x000000)
  gpu.fill(3, h-8, w-4, 7, " ")
  term.setCursor(3,h-2)
end

function API.clearButtons()
  button = {}
  gpu.setBackground(mlib["black"])
  gpu.fill(2, 2, w-4, h-11, " ")
end

function API.setTable(name, func, xmin, xmax, ymin, ymax, draw, displayName, drawColor)
  if displayName == "" then displayName = name end
  drawColor = drawColor or mlib["green"]
  button[name] = {}
  button[name]["func"] = func
  button[name]["active"] = false
  button[name]["xmin"] = xmin
  button[name]["ymin"] = ymin
  button[name]["xmax"] = xmax
  button[name]["ymax"] = ymax
  button[name]["draw"] = draw
  button[name]["displayName"] = displayName
  button[name]["color"] = drawColor
end

function API.fill(text, color, bData)
  local yspot = math.floor((bData["ymin"] + bData["ymax"]) /2)
  local xspot = math.floor((bData["xmax"] + bData["xmin"] - string.len(text)) /2)+1
  local oldColor = gpu.setBackground(tonumber(bData["color"]))
  gpu.fill(bData["xmin"], bData["ymin"], (bData["xmax"]-bData["xmin"]+1), (bData["ymax"]-bData["ymin"]+1), " ")
  gpu.set(xspot, yspot, text)
  gpu.setBackground(oldColor)
end

function API.screen()
  local currColor = black
  for name,data in pairs(button) do
    local on = data["active"]
    if on == true then currColor = mlib["green"] else currColor = mlib["red"] end
    if data["draw"] == true then
    API.fill(data["displayName"], 0x00ff000, data)
--    API.fill(name, currColor, data)
    end
  end
end

function API.hideButtons(index)
  index = index or "all"
  if index == "all" then
    for name,data in pairs(button) do
        data[name]["draw"] = false
        API.clearButtons()
        API.screen()
      end
  else
    indices = parse(index)
      for i in #ndices do
        button[i]["draw"] = false
      end
    API.clearButtons()
    API.screen()
  end
end

function parse(str)
  local words = {}
  for c in string.gmatch(str, "%w+") do
    table.insert(words, c)
  end
  return words
end

function API.toggleButton(name)
  button[name]["active"] = not button[name]["active"]
  buttonStatus = button[name]["active"]
  API.screen()
end

function API.flash(name,length)
  API.toggleButton(name)
  API.screen()
  os.sleep(length)
  API.toggleButton(name)
  API.screen()
end

function API.checkxy(x, y)
  for name, data in pairs(button) do
    if y>=data["ymin"] and  y <= data["ymax"] then
      if x>=data["xmin"] and x<= data["xmax"] and data["draw"] == true then
        data["func"]()
          return true
      end
    end
  end
  return false
end

function API.heading(text)
  w, h = gpu.getResolution()
  term.setCursor((w-string.len(text))/2+1, 1)
  term.write(text)
end

function API.label(text)
  term.setCursor((w-string.len(text))/2+3, h)
  term.write(text)
end

function API.cursor(x,y)
  local oldX, oldY = term.getCursor()
  term.setCursor(x,y)
  return oldX, oldY
end


return API