checker

local mon = peripheral.wrap("top")
local disp = peripheral.wrap("left")
local button = {}

--forward declarations
setTable = function() end
fill = function() end
fillTable = function() end
checkxy = function() end
screen = function() end

function main()
  mon.setTextColor(colors.white)
  mon.setBackgroundColor(colors.black)
  fillTable()
  while true do
    mon.clear()
    screen()
    local e,side,x,y = os.pullEvent("monitor_touch")
    print(x..":"..y)
    disp.clear()
    disp.setCursorPos(1,1)
    disp.write(x..":"..y)
    checkxy(x,y)
    sleep(.1)
  end
end

fillTable = function()
  setTable("1",1,1,1,1)
  setTable("2",3,3,1,1)
  setTable("3",5,5,1,1)
  setTable("4",7,7,1,1)
  setTable("5",2,2,2,2)
  setTable("6",4,4,2,2)
  setTable("7",6,6,2,2)
end

setTable = function(name, xmin, xmax, ymin, ymax)
  button[name] = {}
  button[name]["active"] = false
  button[name]["xmin"] = xmin
  button[name]["xmax"] = xmax
  button[name]["ymin"] = ymin
  button[name]["ymax"] = ymax

end

fill = function(text,color,bData)
  mon.setBackgroundColor(color)
  local yspot = math.floor((bData["ymin"] + bData["ymax"]) / 2)
  local xspot = math.floor((bData["xmax"] - bData["xmin"] - string.len(text)) / 2) + 1
  for j = bData["ymin"],bData["ymax"] do
    mon.setCursorPos(bData["xmin"],j)
    if j == yspot  then
      for  k = 0, bData["xmax"] - bData["xmin"] - string.len(text) + 1 do
        if  k == xspot then
          mon.write(text)
        else
          mon.write(" ")
        end
      end
    else
      for i = bData["xmin"], bData["xmax"] do
        mon.write(" ")
      end
    end
  end
  mon.setBackgroundColor(colors.black)
end

screen = function()
  local currColor
  for name, data in pairs(button) do
    local on = data["active"]
    if on == true then currColor = colors.lime else currColor = colors.red end
    fill(name, currColor, data)
  end
end

checkxy = function(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"] then
        data["active"] = not data["active"]
      end
    end
  end
end



main()