Horizon UI

--[[  HorizonUI
  Design or GUI api
 Made by RodrickLord ]]

local termX,termY = term.getSize()
local centerX,centerY = termX/2+1,termY/2

-- Simple Functions

function centerWrite(text,y,tColor)
  if tColor then term.setTextColor(tColor) end
  local _,cy = term.getCursorPos()
  term.setCursorPos(centerX-#text/2,y or cy)
  write(text)
end

function clearLine(y,bColor)
  local _,cy = term.getCursorPos()
  if bColor then term.setBackgroundColor(bColor) end
  term.setCursorPos(1,y or cy)
  term.clearLine()
end

function clear(bColor)
  if bColor then term.setBackgroundColor(bColor) end
  term.clear()
end

-- Buttons

buttons = {
  _default = {tColor = colors.white, bColor = colors.lightBlue, enabled = true}
}

function createButton(id,text,x,y,x2,y2,action,tColor,bColor,enabled)
  if not buttons[id] then
    local default = buttons._default
    buttons[id] = default
    buttons[id] = {
      text = text, x = x, y = y, x2 = x2 or x+#text+1, y2 = y2 or y+2, tColor = tColor or colors.white, bColor = bColor or colors.lightBlue, enabled = enabled or true
    }
    if enabled then drawButton(id) end
    return true
  else
    return false
  end
end

function deleteButton(id)
  if buttons[id] then
    buttons[id] = nil
    return true
  else
    return false
  end
end

function drawButton(id)
  if buttons[id] then
    paintutils.drawFilledBox(buttons[id].x,buttons[id].y,buttons[id].x2,buttons[id].y2,buttons[id].bColor)
    term.setCursorPos(buttons[id].x+1,buttons[id].y+1)
    term.setTextColor(buttons[id].tColor)
    write(buttons[id].text)
  else
    return false
  end
end

function enableButton(...)
  local args = {...}
  for _,v in pairs(args) do
    if button[v] then button[v].enabled = true end
  end
end

function disableButton(...)
  local args = {...}
  for _,v in pairs(args) do
    if button[v] then button[v].enabled = false end
  end
end

function setButtonOption(id,key,value)
  if buttons[id][key] then
    buttons[id][key] = value
  else
    return false
  end
end

function handleClick()
  buttons._running = true
  while buttons._running do
    local _,_,cx,cy = os.pullEvent("mouse_click")
    for k,v in pairs(buttons) do
      if v.x and v.y and v.x2 and v.y2 then
        if (cx>=v.x and cx<=v.x2) and (cy>=v.y and cy<=v.y2) then v.action() end
      end
    end
  end
end