get("#451") -- getIcons (grid size=3)
get("#388") -- rect functions

fw, fh = 7, 15 -- font size

function findLeftBorder()
  for x = 0, w-1 do
    local nwhite = 0
    for y = 0, fh*2-1 do
      if img.getInt(x, y) == 0xFFFFFF then
        nwhite = nwhite+1
      end
    end
    if nwhite >= fh-1 then -- one row might not be white
      leftBorder = x
      return
    end
    print("x", x, "nwhite", nwhite)
  end
  error("left border not found")
end

w, h = img.width, img.height

function findGrid()
  findLeftBorder()
  getIcons()
  
  r = icons["00f8a328"] or icons["00919df2"] or icons["002afe9a"] -- the latter is in black
  if r == nil then error "package statement not found" end
  
  r = stringtorect(r)
  
  --return r.x..", "..r.y
  
  sx, sy = r.x, r.y-2
  sx, sy = (sx-leftBorder) % fw + leftBorder, sy%fh
end